A new type of relay

Abstract

The present invention relates to the technical field of relays, and particularly relates to a novel relay, which comprises a relay body, two static contact bridges, a moving contact bridge, a driving shaft, a driving mechanism, and at least one auxiliary terminal assembly. The auxiliary terminal assembly includes two auxiliary terminals, an insulating seat, an auxiliary moving contact piece, an auxiliary static contact piece, and an insulating clamping member. The insulating seat is fixed inside the relay body, and the auxiliary moving contact piece and the auxiliary static contact piece are both detachably mounted on the insulating seat; the moving contact and the static contact are spaced apart in the height direction, and an insulating clamping member is sleeved on the driving shaft. The end of the auxiliary moving contact piece where the moving contact is installed extends towards the insulating clamping member and is clamped and matched with the insulating clamping member; compared with the prior art, it replaces the previous fixing method in which the auxiliary moving contact piece is fixed on the driving shaft, reduces the load on the driving shaft, and solves the problem that the auxiliary moving contact piece falls off the driving shaft.

Description

Technical Field

[0001] The present invention relates to the technical field of relays, and particularly to a new type of relay. Background Art

[0002] Existing relays generally include a ceramic shell, a connection platform, and a magnetic circuit shell. The magnetic circuit shell is used to load a coil, and a support plate is provided at the top of the magnetic circuit shell to separate the coil from the ceramic shell, so that the ceramic shell, the connection platform, and the support plate are hermetically connected to form an arc extinguishing chamber. Two static contact bridges, a moving contact bridge, a driving shaft, and a driving mechanism are provided in the arc extinguishing chamber. The two static contact bridges are fixedly installed on the ceramic shell. One end of the static contact bridge extends outside the ceramic shell, and the other end is inserted into the ceramic shell. The bottom end of the driving shaft passes through the support plate and then is inserted into the magnetic circuit shell, and its top end extends into the arc extinguishing chamber. The moving contact bridge is fixedly installed at the upper end of the driving shaft. The driving mechanism is arranged in the magnetic circuit shell and is used to drive the driving shaft to drive the moving contact bridge to move, so that the moving contact bridge is closed or disconnected from the two static contact bridges.

[0003] In order to monitor the problem of relay failure caused by the moving contact bridge not conducting when it should conduct or still being attracted to the static contact bridge when the moving contact bridge should separate in a relay, existing relays usually add a set of auxiliary terminal components, and an auxiliary detection circuit is externally connected through the auxiliary terminal components to quickly detect the above-mentioned faults.

[0004] Existing auxiliary terminal components include an auxiliary moving contact piece and an auxiliary static contact piece. The auxiliary static contact piece is generally fixed in the arc extinguishing chamber, while the auxiliary moving contact piece is fixedly installed on the driving shaft. The auxiliary static contact piece and the auxiliary moving contact piece are respectively connected with auxiliary terminals for connecting with an external detection circuit. In actual application, when the driving shaft drives the moving contact bridge to be attracted to the static contact bridge, the auxiliary moving contact piece on the driving shaft also moves towards the auxiliary static contact piece. When the auxiliary static contact piece contacts the auxiliary moving contact piece, the external auxiliary detection circuit forms a loop through the auxiliary terminals, the auxiliary static contact point, and the auxiliary moving contact point, so as to detect the relay. In order to avoid conduction between the auxiliary moving contact piece and the driving shaft, an insulating part is generally provided between the auxiliary moving contact piece and the driving shaft to insulate the two from each other. This way of fixing the auxiliary moving contact piece not only increases the load on the driving shaft and is not conducive to the control of the driving shaft, but also, under frequent opening and closing applications, the auxiliary moving contact piece will become loose relative to the driving shaft. Once the auxiliary moving contact piece becomes loose, the normal detection function cannot be carried out, the connection strength is poor, which affects the normal operation of the relay and is prone to safety accidents.

[0005] In addition, existing relays are only provided with one set of auxiliary terminal components. Once this set of auxiliary terminal components fails or reports an error, the relay needs to be immediately replaced or debugged. The error tolerance rate is low, the working stability is poor, and it is very inconvenient to use. Summary of the Invention

[0006] The object of the present invention is to provide a novel relay aiming at the deficiencies in the prior art. By using this relay, the problem of unstable operation of the auxiliary terminal assembly can be solved.

[0007] The object of the present invention is achieved by the following technical solutions:

[0008] Provide a novel relay, including a relay body, two static contact bridges, a moving contact bridge, a driving shaft and a driving mechanism; the two static contact bridges are fixedly installed on the relay body; the driving shaft is installed inside the relay body, the moving contact bridge is installed at the upper end of the driving shaft through an insulating member, and the novel relay further includes at least one auxiliary terminal assembly. The auxiliary terminal assembly includes two auxiliary terminals, an insulating seat, an auxiliary moving contact piece, an auxiliary static contact piece and an insulating clamping member. The insulating seat is fixed inside the relay body. The auxiliary moving contact piece and the auxiliary static contact piece are both detachably installed on the insulating seat. The two auxiliary terminals are inserted into the relay body and are respectively fixedly connected to one end of the auxiliary moving contact piece and one end of the auxiliary static contact piece. A moving contact and a static contact are respectively fixedly installed at the other end of the auxiliary moving contact piece and the other end of the auxiliary static contact piece; the moving contact and the static contact are arranged at intervals in the height direction. An insulating clamping member is sleeved on the driving shaft. The end of the auxiliary moving contact piece where the moving contact is installed extends towards the insulating clamping member and is clamped and matched with the insulating clamping member; there are two auxiliary terminal assemblies, and the two auxiliary terminal assemblies are symmetrically arranged with the axis of the moving contact bridge as the symmetry axis.

[0009] Wherein, the insulating clamping member is arranged in an I-shaped shape, and retaining rings extend outwards from both the upper end portion and the lower end portion of the insulating clamping member, and the end of the auxiliary moving contact piece is inserted between the two retaining rings.

[0010] Wherein, a clamping block extends out from the outer peripheral side of the insulating clamping member, and the end of the auxiliary moving contact piece extends towards the insulating clamping member and winds around the outer peripheral side of the clamping block.

[0011] Wherein, the relay body includes a ceramic shell, a connecting platform and a magnetic circuit shell. A coil is arranged inside the magnetic circuit shell, and a support plate is arranged at the top of the magnetic circuit shell to separate the coil from the ceramic shell.

[0012] Wherein, the ceramic shell is provided with a mounting hole for the auxiliary terminal to pass through. In the assembled state, the auxiliary terminal is inserted into the mounting hole, and a copper sleeve is arranged between the auxiliary terminal and the mounting hole, and the copper sleeve is sleeved on the outer peripheral side of the auxiliary terminal.

[0013] Wherein, the longitudinal section of the mounting hole is arranged in a conical shape.

[0014] It also includes a shell, a PCB board and a magnetic conductive frame. The PCB board is provided with a through hole for the static contact bridge to pass through. The PCB board is fixedly installed on the outer peripheral side of the static contact bridge. The magnetic conductive frame is fixedly installed between the PCB board and the relay body, and the magnetic conductive frame covers the top end of the relay body to separate the PCB board from the relay body. A pair of permanent magnets are arranged on the inner side of the magnetic conductive frame to form a magnetic field. The PCB board, the magnetic conductive frame and the relay body are all fixedly installed in the shell.

[0015] It also includes an external terminal and a conductive wire for external connection. The external terminal is welded on a PCB board. A voltage collection module is welded on the PCB board. At least one clamping ring with an opening is sleeved on the outer peripheral side of the static contact bridge. One end of the conductive wire is connected to the input end of the voltage collection module via the PCB board. The output end of the voltage collection module is connected to the external terminal via the PCB board. The clamping ring clamps the other end of the conductive wire on the static contact bridge.

[0016] Among them, each auxiliary terminal is connected to the PCB board through a wire, and the output end of the auxiliary terminal is connected to the external terminal through the PCB board. The external terminal is a connector with a DB15 pin interface.

[0017] It also includes a controller, which is arranged on the side of the shell. A connecting plate is provided between the controller and the shell. The connecting plate is provided with a first countersunk hole and a second countersunk hole. A first screw is provided in the first countersunk hole and is threadedly connected to the side of the shell. A second screw is provided in the second countersunk hole and is threadedly connected to the side of the controller. The controller is also provided with a connector with a DB15 pin interface.

[0018] Beneficial effects of the present invention:

[0019] The working process of the novel relay of the present application is as follows: when the relay is energized, the driving mechanism pushes the driving shaft to move upward, the moving contact bridge and the stationary contact bridge are attracted, and the relay is in a energized state. During the upward movement of the driving shaft, the insulating clamping piece sleeved on the driving shaft will move upward along with the driving shaft. When the insulating clamping piece moves upward, the end of the auxiliary moving contact piece will be moved, so that the moving contact of the auxiliary moving contact piece is connected with the stationary contact of the auxiliary stationary contact piece, forming an auxiliary detection circuit;

[0020] Compared with the prior art, the invention replaces the previous fixing method of the auxiliary moving contact piece on the driving shaft, reduces the load on the driving shaft, solves the problem of the auxiliary moving contact piece falling off from the driving shaft, strengthens the installation structure strength of the auxiliary moving contact piece and the auxiliary static contact piece, and further strengthens the working stability of the relay;

[0021] In addition, two auxiliary terminal assemblies are provided. When one of the auxiliary terminal assemblies fails, the other auxiliary terminal assembly can serve as a backup. Information fed back by the backup auxiliary terminal assembly is used to determine whether the relay needs to be replaced or repaired, thereby enhancing the fault tolerance of the relay. Brief Description of the Drawings

[0022] The present invention will be further described with reference to the accompanying drawings. However, the embodiments in the drawings do not constitute any limitation to the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the following drawings.

[0023] Figure 1 It is a schematic structural diagram of the relay in Embodiment 1.

[0024] Figure 2 It is an exploded view of the relay in Embodiment 1.

[0025] Figure 3 It is a cross-sectional view of the relay in Embodiment 1.

[0026] Figure 4 It is a schematic structural diagram of the static contact bridge in Embodiment 1.

[0027] Figure 5 It is an exploded view of the static contact bridge in Embodiment 1.

[0028] Figure 6 It is an exploded view of the relay body in Embodiment 1.

[0029] Figure 7 It is a top view of the relay body in Embodiment 1.

[0030] Figure 8 For Figure 7 the cross-sectional view at A-A in

[0031] Figure 9 It is a schematic structural diagram of the insulating base in Embodiment 1.

[0032] Figure 10 It is a schematic structural diagram of the auxiliary moving contact piece in Embodiment 1.

[0033] Figure 11 For Figure 7 the cross-sectional view at B-B in

[0034] Figure 12 For Figure 7 the cross-sectional view at C-C in

[0035] Figure 13 It is a schematic structural diagram of the relay and the controller in Embodiment 1.

[0036] Figure 14 It is an exploded view of the relay and the controller in Embodiment 1.

[0037] Figure 15 It is an exploded view of the relay body with the ceramic shell hidden in Embodiment 2.

[0038] Figure 16 It is a cross-sectional view after the ceramic shell of the relay body in Embodiment 2 is hidden.

[0039] Reference numerals: relay body 100, ceramic shell 11, connecting platform 12, magnetic circuit shell 13, coil 131, support plate 132, outer shell 1, static contact bridge 2, moving contact bridge 20, stainless steel column 21, copper base 22, static contact part 23, card slot 24, external terminal 3, PCB board 4, magnetic conduction frame 5, conducting wire 6, auxiliary terminal 7, mounting hole 71, copper sleeve 72, snap ring 8, insulating seat 81, convex column 811, auxiliary moving contact piece 82, moving contact point 821, auxiliary static contact piece 83, static contact point 831, clamping block 84, driving shaft 91, insulating clamping part 92, retaining ring 921, through hole 401, folding part 411, positioning hole 422, convex ring 421, first clamping piece 441, second clamping piece 442, first clamping part 451, second clamping part 452, controller 200, connecting plate 201, first countersunk hole 211, second countersunk hole 212. Specific embodiments

[0040] The present invention will be further described in conjunction with the following embodiments.

[0041] Embodiment 1

[0042] For the specific implementation of a new type of relay of the present invention, please refer to Figure 1 and Figure 2 , the relay includes an outer shell 1, a PCB board 4, a magnetic conduction frame 5 and a relay body 100. A pair of static contact bridges 2 extending to the top of the outer shell 1 are provided at the top end of the relay body 100. An external terminal 3 for external connection is welded on the PCB board 4, and the external terminal 3 also penetrates through the outer shell 1. The PCB board 4 is provided with a through hole for the static contact bridge 2 to pass through, and the PCB board 4 is fixedly installed on the outer peripheral side of the static contact bridge 2, which can effectively shorten the distance between the static contact bridge 2 and the PCB board 4 and between the relay body 100 and the PCB board 4, reduce the length of the wire required, and thus reduce the wire resistance.

[0043] Please refer to Figure 2 , a magnetic conduction frame 5 is arranged between the relay body 100 and the PCB board 4, and the magnetic conduction frame 5 covers the top end of the relay body 100, so that the PCB board 4 can be separated from the relay body 100. Permanent magnets are provided on both sides inside the magnetic conduction frame 5 to generate a magnetic field. When the static contact part 23 is cut off (separated from the moving contact assembly), an arc will be generated, and this magnetic field can effectively control the arc and effectively avoid interference caused by other factors to the signal transmission of the PCB board 4.

[0044] In this embodiment, a conventional analog voltage acquisition module (not shown) is also soldered on the PCB board 4. The input end of the voltage acquisition module is connected to the static contact bridge 2 via a conductive wire 6, and the output end of the voltage acquisition module is connected to the input end of the external terminal 3 via the PCB board 4. An external electronic component such as a controller 200 can be pluggably connected to the external terminal 3 through a data line to collect the relay voltage. By providing the PCB board 4 with a voltage acquisition module, the conductive wire 6 connects the static contact bridge 2 to the PCB board 4, so that the voltage acquisition module can collect the voltage of the static contact bridge 2. Then, an external electronic device is connected to the external terminal 3 and obtains data display from the voltage acquisition module via the PCB board 4, solving the problem of manual acquisition in the past, reducing the labor intensity of the staff, and improving the work efficiency.

[0045] Please refer to Figures 3 to 5 , for the convenience of connecting the static contact bridge 2 and the conductive wire 6, a clamping ring with an opening is sleeved on the outer peripheral side of the static contact bridge 2. One end of the conductive wire 6 is soldered to the PCB board 4, and the clamping ring clamps the other end of the conductive wire 6 on the static contact bridge 2. The conductive wire 6 is electrically connected to the static contact bridge 2 by means of the clamping of the clamping ring, replacing the previous welding connection method, further reducing the labor intensity of the staff and further improving the work efficiency. To further strengthen the connection strength between the conductive wire 6 and the static contact bridge 2, please refer to Figure 5 , a circle of card slots 24 is provided on the outer side surface of the static contact bridge 2. In the assembled state, the clamping ring is inserted into the card slots 24.

[0046] In this embodiment, please refer to Figures 3 to 5 , the static contact bridge 2 includes a copper base 22 and a stainless steel rod. The copper base 22 is used to contact the conductive wire 6, and its bottom surface extends downward to form a static contact portion 23. The copper base 22 is clamped in the relay body 100, and the stainless steel rod extends out of the relay as the working end of the static contact bridge 2 structure. The static contact portion 23, as the static contact component of the relay, cooperates with the moving contact component to realize the closing and opening of the relay.

[0047] As an improvement, please refer to Figures 3 to 5 , a threaded hole is provided on the top surface of the copper base 22. In the assembled state, the stainless steel rod is inserted and fixed in the threaded hole of the copper base 22. The copper base 22 is made of pure copper, and the stainless steel rod is made of stainless steel. The stainless steel rod, as the working end of the static contact bridge 2, is made of stainless steel. The yield strength of stainless steel is higher than that of copper, solving the problem that the working end of the static contact bridge 2 is deformed in a high-temperature environment in the past, enhancing the structural strength of the static contact bridge 2, and further improving the stability and safety of the relay operation.

[0048] In this embodiment, in order to ensure the connection strength and electrical conductivity between the stainless-steel rod and the copper base 22, internal threads are provided in the threaded holes, and external threads that are matched and screwed with the internal threads are provided on the outer peripheral side of one end of the stainless-steel rod. The fixed method of screw connection facilitates disassembly, assembly and maintenance, making the overall structure more firm and compact. As a preferred solution, the stainless-steel rod can be replaced by an internal hexagonal screw.

[0049] Please refer to Figures 6 to 8 , the relay body 100 includes a ceramic shell 11, a connection table 12 and a magnetic circuit shell 13. A coil 131 is provided inside the magnetic circuit shell 13, and a support plate 132 is provided at the top of the magnetic circuit shell 13 to separate the coil 131 from the ceramic shell 11. Two static contact bridges 2, a moving contact bridge 20, a driving shaft 91 and a driving mechanism are provided inside the relay body 100. The two static contact bridges 2 are fixedly installed on the relay body 100, the driving shaft 91 is installed inside the relay body 100, the moving contact bridge 20 is installed at the upper end of the driving shaft 91 through an insulating member, and the installation methods and principles of the static contact bridge 2, the driving shaft 91 and the moving contact bridge 20 are the same as those of existing relays. Those skilled in the art can easily know the working principle and movement process among the three.

[0050] Please refer to Figures 8 to 9 , the new relay further includes two auxiliary terminal assemblies. The auxiliary terminal assembly includes an insulating seat 81, an auxiliary moving contact piece 82, an auxiliary static contact piece 83, an insulating clamping member 92 and two auxiliary terminals (terminal posts). In this embodiment, the two auxiliary terminal assemblies share one insulating seat 81, and the insulating seat 81 is fixed inside the relay body 100. The two auxiliary terminals are inserted into the relay body 100 and are respectively fixedly connected to one end of the auxiliary moving contact piece 82 and one end of the auxiliary static contact piece 83. Moving contacts 821 and static contacts 831 are respectively fixedly installed at the other ends of the auxiliary moving contact piece 82 and the auxiliary static contact piece 83.

[0051] In this embodiment, two auxiliary terminal assemblies are provided. When one of the auxiliary terminal assemblies fails, the other auxiliary terminal assembly can play a backup role, and it is judged whether the relay needs to be replaced or repaired through the information fed back by the backup auxiliary terminal assembly, enhancing the fault tolerance rate of the relay. In addition, the two auxiliary terminal assemblies are symmetrically arranged with the axis of the moving contact bridge as the axis of symmetry, and can judge whether the driving shaft 91 deviates in two different directions, so as to provide more information for subsequent maintenance or the working state of the relay, facilitating the provision of more favorable information for the subsequent research and development of the relay.

[0052] The auxiliary moving contact piece 82 or the auxiliary static contact piece 83 is detachably installed on the insulating seat 81. Please refer to Figure 9, taking the structural schematic diagram of the auxiliary moving contact piece 82 as an example for illustration, the end of the auxiliary moving contact piece 82 or the auxiliary static contact piece 83 is folded back against its length direction to form a folded portion 411 that closely adheres to the auxiliary moving contact piece 82 or the auxiliary static contact piece 83. The formation of the specific folded portion 411 can be achieved by first bending, and then the folded portion 411 is flattened and processed to closely adhere to the auxiliary moving contact piece 82 or the auxiliary static contact piece 83, forming the folded portion 411 that closely adheres to the auxiliary moving contact piece 82 or the auxiliary static contact piece 83. By folding the end of the auxiliary moving contact piece 82 or the auxiliary static contact piece 83 back against its length direction to form the folded portion 411 that closely adheres to the auxiliary moving contact piece 82 or the auxiliary static contact piece 83, it is possible to avoid cutting or deburring the folded portion 411, thereby reducing the labor intensity of the grinding workers and improving work efficiency.

[0053] In this embodiment, please refer to Figure 10 , a chuck is formed at one end of the auxiliary moving contact piece 82 or the auxiliary static contact piece 83, and a through hole 401 passing through the folded portion 411 is provided at the other end of the auxiliary moving contact piece 82 or the auxiliary static contact piece 83. The through hole 401 is used to install the moving contact 821 or the static contact 831. Since the setting of the folded portion 411 increases the thickness at the location where the through hole 401 is opened, the moving contact 821 or the static contact 831 can be installed more firmly.

[0054] In addition, please refer to Figure 9 and Figure 10 , the auxiliary moving contact piece 82 or the auxiliary static contact piece 83 is provided with a plurality of positioning holes 422 for positioning, and a convex ring 421 is formed upward in the positioning holes 422. The positioning holes 422 are used to form a clamping fit with the convex posts 811 on the insulating seat 81, and their function is to fix and limit the movement of the auxiliary moving contact piece 82 or the auxiliary static contact piece 83. As an improvement, the convex ring 421 of the positioning hole 422 is formed on the auxiliary moving contact piece 82 or the auxiliary static contact piece 83 through flanging processing. Through the processing technology of flanging and punching, the remaining material punched out forms the convex ring 421, thereby avoiding the generation of burrs in the positioning holes 422, further reducing the labor intensity of the grinding workers and improving work efficiency.

[0055] In this embodiment, please refer to Figure 10 , the chuck includes a first clip 441 and a second clip 442 for clamping the signal end. Both the first clip 441 and the second clip 442 are arranged in a vertical V shape. One end of the first clip 441 is fixedly connected to the auxiliary moving contact piece 82 or the auxiliary static contact piece 83, one end of the first clip 441 is fixedly connected to one end of the second clip 442, the other end of the second clip 442 is bent obliquely upward to form a second clamping portion 452, and the connection between the first clip 441 and the auxiliary moving contact piece 82 or the auxiliary static contact piece 83 is bent obliquely downward to form a first clamping portion 451. The first clamping portion 451 and the second clamping portion 452 cooperate to form an elastic clamping mechanism, which can firmly clamp and conduct the signal terminal.

[0056] As an improvement, see Figures 8 to 11 The moving contact 821 and the static contact 831 are arranged at intervals in the height direction, that is, the installation plane of the auxiliary moving contact 821 and the installation plane of the auxiliary static contact 831 are staggered in the height direction. The driving shaft 91 is sleeved with an insulating clamp 92, and the end of the auxiliary moving contact piece 82 on which the moving contact 821 is installed extends toward the insulating clamp and is clamped and matched with the insulating clamp.

[0057] Please see Figure 11 , the insulating holder 92 is arranged in an I-shape, and the upper and lower ends of the insulating holder 92 both extend outwardly to form a retaining ring 921, and the end of the auxiliary moving contact piece 82 is inserted between the two retaining rings 921. When the relay is powered on, the driving mechanism pushes the driving shaft 91 upward, the moving contact bridge 20 and the static contact bridge 2 are attracted, and the relay is in a powered state; during the upward movement of the driving shaft 91, the insulating holder sleeved on the driving shaft 91 will move upward along with the driving shaft 91, and when the insulating holder moves upward, the retaining ring 921 located below will move the end of the auxiliary moving contact piece 82, so that the moving contact 821 of the auxiliary moving contact piece 82 is connected with the static contact 831 of the auxiliary static contact piece 83, forming an auxiliary detection circuit. When the power supply is disconnected, the magnetic force disappears, and the drive shaft 91 is reset under the drive of the spring. During the reset movement of the drive shaft 91, the insulating clamp 92 will be driven to move downward together. The retaining ring 921 located above the insulating clamp will press down the end of the auxiliary moving contact piece 82 to force the auxiliary moving contact piece 82 to separate from the auxiliary static contact piece 83 to avoid its up and down shaking, and achieve rapid stopping, ensuring that when the main contact assembly is disconnected, the auxiliary terminal assembly can also be disconnected at the same time, and the working stability of the relay is enhanced. In addition, the I-shaped structure realizes the use of a mechanical structure to separate the auxiliary moving contact piece from the auxiliary static contact piece, and even in a bumpy environment, the moving contact and the static contact will not fit. Compared with the prior art, it replaces the previous fixing method of the auxiliary moving contact piece 82 on the drive shaft 91, reduces the load of the drive shaft 91, solves the problem of the auxiliary moving contact piece 82 falling off the drive shaft 91, strengthens the installation structure strength of the auxiliary moving contact piece 82 and the auxiliary static contact piece 83, and further enhances the working stability of the relay.

[0058] Please see Figure 6 and Figure 12, the ceramic shell 11 is provided with an installation hole 71 for the auxiliary terminal to pass through. In the assembled state, the auxiliary terminal is inserted into the installation hole 71, and a copper sleeve 72 is provided between the auxiliary terminal and the installation hole 71. The copper sleeve 72 is sleeved on the outer peripheral side of the auxiliary terminal. Since the auxiliary terminal is inserted from the outside of the ceramic shell 11, therefore, in order to form the arc extinguishing chamber, a seal must be formed between the auxiliary terminal and the installation hole 71 of the ceramic shell 11. In actual processing, the aperture of the installation hole 71 is generally much larger than the radius of the terminal post. Therefore, if the auxiliary terminal and the ceramic shell 11 are directly sealed by welding, the welding difficulty is great, and it is very easy for a large amount of debris to fall into the relay, causing safety problems. Therefore, in this embodiment, by sleeving a copper sleeve 72 on the outer side of the auxiliary terminal, the auxiliary terminal is first fixed in the installation hole 71, and then welded and sealed. The welding labor intensity is significantly reduced, and moreover, debris can be effectively prevented from falling into the relay during welding. In order to further improve the simplicity of welding the copper sleeve 72, the installation hole 71 is arranged in a conical shape, that is, the longitudinal section of the installation hole 71 is arranged in a conical shape. Through the characteristics of the cone, the auxiliary terminal can be limited and fixed by the frictional force between the installation hole 71 and the copper sleeve 72 before welding, preventing the auxiliary terminal from loosening during the welding process and improving the welding quality.

[0059] In this embodiment, please refer to Figure 2 , each auxiliary terminal 7 is connected to the PCB board 4 through a wire. The output end of the auxiliary terminal 7 is connected to the input end of the external terminal 3 through the PCB board 4. The external terminal 3 is a connector with a DB15 pin interface, that is, the interface of the external terminal 3 is of the DB15 pin interface type. Similarly, the output end of the voltage acquisition module on the PCB board 4 is connected to the input end of the external terminal 3 through the PCB board 4. Using a connector with a DB15 pin interface as the output port replaces the previous setting method using a single terminal post. There is no need to set multiple terminal posts to correspond to the signal output ends of each electronic component, simplifying the output interface of the relay and making the connection more convenient and firm.

[0060] Please refer to Figure 13 and Figure 14, in this embodiment, the relay with a connector further includes a controller 200. The controller 200 is arranged on the side of the housing 1. There is a connecting plate 201 between the controller 200 and the housing 1. The connecting plate 201 is provided with a first countersunk hole 211 and a second countersunk hole 212. A first screw screwed to the side of the housing 1 is arranged in the first countersunk hole 211, and a second screw screwed to the side of the controller 200 is arranged in the second countersunk hole 212. The controller 200 is also provided with a D-SUB connector with a DB15 pin interface. Traditional controllers are generally integrated on the PCB board 4, which will result in a relatively high cost of traditional relays. For some situations where only the disconnection and closing functions of the relay are required and the working data of the relay does not need to be obtained, the relay of this embodiment can be used. The relay of this embodiment can save cost consumption by disassembling the controller 200. In addition, for the situation where the controller 200 is damaged, only the controller 200 needs to be disassembled and replaced, without disassembling and assembling the entire relay.

[0061] Embodiment 2

[0062] The second specific implementation manner of a novel relay of the present application is shown in Figure 15 or Figure 16 . The main technical solutions of this embodiment are the same as those of Embodiment 1. For the features not explained in this embodiment, the explanations in Embodiment 1 are adopted and will not be elaborated here. The difference between this embodiment and Embodiment 1 is that: a clamping block 84 extends out from the outer peripheral side of the insulating clamping member 92, and the end of the auxiliary moving contact piece 82 extends towards the insulating clamping member and is wound around the outer peripheral side of the clamping block 84. In this embodiment, the clamping block 84 is strip-shaped, so that the overall structure of the insulating clamping member 92 is similar to that of the moving contact bridge 20. Similarly, in this embodiment, both the auxiliary moving contact piece 82 and the auxiliary static contact piece 83 are fixedly installed on the insulating base 81, and the end of the auxiliary moving contact piece 82 is wound around the outer peripheral side of the clamping block 84.

[0063] When the relay is energized, the driving mechanism pushes the driving shaft 91 upward, the moving contact bridge 20 and the static contact bridge 2 are engaged, and the relay is in the energized state; during the upward movement of the driving shaft 91, the insulating holding member sleeved on the driving shaft 91 will move upward along with the driving shaft 91. When the insulating holding member moves upward, the top end of the holding block 84 will abut against the auxiliary moving contact piece 82, so that the moving contact point 821 of the auxiliary moving contact piece 82 is connected to the static contact point 831 of the auxiliary static contact piece 83, forming an auxiliary detection circuit. When the energizer is disconnected and the magnetic force disappears, the driving shaft 91 is reset under the drive of the spring. During the reset movement of the driving shaft 91, the holding block 84 will be driven to move downward together. The bottom end surface of the holding block 84 will press down the auxiliary moving contact piece 82 to force the auxiliary moving contact piece 82 to be separated from the auxiliary static contact piece 83, also achieving rapid stopping, ensuring that when the main contact assembly is disconnected, the auxiliary terminal assembly can also be disconnected at the same time, and enhancing the working stability of the relay. Compared with the prior art, it replaces the previous fixing method of fixing the auxiliary moving contact piece 82 on the driving shaft 91, reduces the load on the driving shaft 91, solves the problem of the auxiliary moving contact piece 82 falling off the driving shaft 91, enhances the installation structure strength of the auxiliary moving contact piece 82 and the auxiliary static contact piece 83, and further enhances the working stability of the relay.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A relay, comprising a relay body, a driving mechanism, a moving contact bridge, a driving shaft and two static contact bridges; the two static contact bridges are fixedly installed on the relay body; the driving shaft is installed inside the relay body, and the moving contact bridge is installed at the upper end of the driving shaft through an insulating component, Characterized in that: The relay further includes at least one auxiliary terminal assembly, the auxiliary terminal assembly includes an insulating clamping member, an insulating seat, an auxiliary moving contact piece, an auxiliary static contact piece and two auxiliary terminals, the insulating seat is fixed inside the relay body, the auxiliary moving contact piece and the auxiliary static contact piece are detachably installed on the insulating seat, the two auxiliary terminals are inserted into the relay body and are respectively fixedly connected to one end of the auxiliary moving contact piece and one end of the auxiliary static contact piece, and a moving contact and a static contact are respectively fixedly installed at the other ends of the auxiliary moving contact piece and the auxiliary static contact piece; The moving contact and the static contact are spaced apart in the height direction, an insulating clamping member is sleeved on the driving shaft, and the end of the auxiliary moving contact piece where the moving contact is installed extends towards the insulating clamping member and is clamped and matched with the insulating clamping member; There are two auxiliary terminal assemblies, and the two auxiliary terminal assemblies are symmetrically arranged with the axis of the moving contact bridge as the axis of symmetry; The insulating clamping member is arranged in an I shape, and retaining rings extend outwards from the upper end and the lower end of the insulating clamping member, and the end of the auxiliary moving contact piece is inserted between the two retaining rings.

2. A relay according to claim 1, Characterized in that: A clamping block extends out from the outer peripheral side of the insulating clamping member, and the end of the auxiliary moving contact piece extends towards the insulating clamping member and winds around the outer peripheral side of the clamping block.

3. A relay according to claim 1, Characterized in that: The relay body includes a ceramic shell, a connecting platform and a magnetic circuit shell, a coil is arranged inside the magnetic circuit shell, and a support plate is arranged at the top of the magnetic circuit shell to separate the coil from the ceramic shell.

4. A relay according to claim 3, Characterized in that: The ceramic shell is provided with an installation hole for the auxiliary terminal to pass through. In the assembled state, the auxiliary terminal is inserted into the installation hole, and a copper sleeve is arranged between the auxiliary terminal and the installation hole, and the copper sleeve is sleeved on the outer peripheral side of the auxiliary terminal.

5. A relay according to claim 4, Characterized in that: The longitudinal section of the installation hole is arranged in a conical shape.

6. A relay according to claim 1, Characterized in that: It further includes a housing, a PCB board and a magnetic guide frame. The PCB board is provided with a perforation for the static contact bridge to pass through. The PCB board is fixedly installed on the outer peripheral side of the static contact bridge. The magnetic guide frame is fixedly installed between the PCB board and the relay body, and the magnetic guide frame covers the top end of the relay body to separate the PCB board from the relay body. A pair of permanent magnets are arranged on the inner side surface of the magnetic guide frame to form a magnetic field; the PCB board, the magnetic guide frame and the relay body are all fixedly installed in the housing.

7. A relay according to claim 6, Characterized in that: It further includes an external terminal for external connection and a conductive wire. The external terminal is welded on the PCB board, and a voltage acquisition module is welded on the PCB board. At least one clamping ring with an opening is sleeved on the outer peripheral side of the static contact bridge. One end of the conductive wire is connected to the input end of the voltage acquisition module through the PCB board, and the output end of the voltage acquisition module is connected to the external terminal through the PCB board. The clamping ring clamps the other end of the conductive wire on the static contact bridge.

8. A relay according to claim 7, characterized in that: Each auxiliary terminal is connected to the PCB board through a wire, and the output end of the auxiliary terminal is connected to the external terminal through the PCB board. The external terminal is a connector with a DB15 pin interface.

9. A relay according to claim 8, characterized in that: It further includes a controller. The controller is arranged on the side of the housing. A connecting plate is provided between the controller and the housing. The connecting plate is provided with a first countersunk hole and a second countersunk hole. A first screw screwed to the side of the housing is arranged in the first countersunk hole, and a second screw screwed to the side of the controller is arranged in the second countersunk hole. The controller is also provided with a connector with a DB15 pin interface.

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