High-stability heavy-current relay

Abstract

The invention relates to the technical field of relays, and discloses a high-stability large-current relay which comprises a shell, a base, an electromagnet and a contact mechanism, the base, the electromagnet and the contact mechanism are arranged in the shell, the electromagnet and the contact mechanism are both installed on the base, a fixing plate and a fixing table are installed on the base, and a first armature matched with the electromagnet is rotationally arranged on the fixing plate; a sliding plate is slidably arranged on the fixed table, an output rack plate is slidably arranged on the sliding plate, a cam is rotatably arranged on the base, the output rack plate is in transmission fit with the cam, and the cam is in intermittent contact with the contact mechanism. Through the arrangement of the cam, the rotation of the cam provides a more stable contact force through progressive extrusion, and a base circle tangent point is converted into an eccentric vertex which abuts against the first supporting elastic piece, so that the first supporting elastic piece is pressed against and bent, and the side space of the first supporting elastic piece is occupied by the cam; therefore, the first supporting elastic sheet is difficult to rebound, so that the bounce phenomenon of the contact due to instant impact is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of relays, in particular to a high-current relay with strong stability. Background Art

[0002] The working principle of high-current relays is based on electromagnetic induction. It is mainly composed of an iron core, a coil, an armature, and a contact spring. When a suitable voltage is applied to both ends of the coil, current will flow through the coil, thereby generating a magnetic field. The iron core is magnetized, attracting the armature to move, so that the contacts of the relay are closed or disconnected to control the high-current circuit connected to it. When the coil is powered off, the magnetic field disappears, and the armature returns to its initial position under the action of the spring, and the contacts also return to their original state. The electronic components of solid-state relays are sensitive to temperature. Too high or too low a temperature may affect its performance and life. Therefore, traditional relays need to be used in some environments with too high or too low temperatures. However, due to the mechanical movement of traditional relays, it takes a certain amount of time for the contacts to be attracted and released, and the response speed is relatively slow, and arcs may occur.

[0003] At present, the contact bounce effect of traditional relays refers to the phenomenon that when the relay contact switch is connected or disconnected, due to mechanical elasticity and slight vibration of the contact surface, the contacts will open and close quickly multiple times before actual contact or disconnection. The contact bounce may cause the circuit to be unable to be reliably connected and disconnected; therefore, it does not meet the existing needs. In this regard, we have proposed a high-current relay with strong stability. Summary of the invention

[0004] The present invention provides a high-current relay with strong stability, which has the beneficial effect of reducing the bouncing phenomenon of contacts caused by instantaneous impact, and solves the problem that the contact rebound effect of the traditional relay mentioned in the above background technology refers to the phenomenon that when the relay contact switch is connected or disconnected, due to mechanical elasticity and slight vibration of the contact surface, the contacts will open and close quickly multiple times before actual contact or disconnection, and the contact bounce may cause the circuit to be unable to be reliably connected and disconnected.

[0005] The present invention provides the following technical solution: a high-stability high-current relay, comprising a shell and an internal base, an electromagnet and a contact mechanism, wherein the electromagnet and the contact mechanism are both mounted on the base, a fixed plate and a fixed platform are mounted on the base, a first armature cooperating with the electromagnet is rotatably arranged on the fixed plate, a sliding plate is slidably arranged on the fixed platform, an output rack plate is slidably arranged on the sliding plate, a cam is rotatably arranged on the base, the output rack plate is transmission-cooperated with the cam, and the cam is in intermittent contact with the contact mechanism.

[0006] As an optional solution for a high-stability high-current relay described in the present invention, the first armature is provided with a first rotating shaft at one end away from the electromagnet, the first rotating shaft is rotatably connected to the fixed plate, a second rotating shaft is rotatably installed on the side of the fixed plate, a first gear is sleeved on the outer side of the second rotating shaft, a pulley set is sleeved on the outer side of the first rotating shaft and the second rotating shaft, a base is installed on the surface of the base, a mounting column is rotatably installed on the base, the cam is eccentrically installed with the mounting column, an input rack plate is slidably installed on the side of the sliding plate, and a second gear matching the output rack plate is provided on the mounting column.

[0007] As an optional solution for a high-stability high-current relay described in the present invention, wherein: a movable plate is arranged on the sliding plate, an extrusion bevel block is installed on the surface of the movable plate, an L-shaped support rod is connected to the side of the fixed platform, a ring is rotatably sleeved on the outer side of the L-shaped support rod, a resistance rod is integrally connected to the side of the ring, a resistance block is connected to the bottom of the resistance rod, the resistance block intermittently resists the side of the extrusion bevel block, the resistance rod intermittently resists the side of the fixed block, a fixed block is fixedly arranged on the sliding plate, a fixed column is slidably inserted into the side of the fixed block, the other end of the fixed column is connected to the side of the movable plate, and a force storage spring is sleeved on the outer side of the fixed column.

[0008] As an optional solution for a high-stability high-current relay described in the present invention, the fixed platform is provided with a first wedge-shaped groove, a first wedge block is installed at the bottom of the sliding plate, the first wedge block is slidably engaged with the surface of the first wedge groove, a third wedge groove is provided on the surface of the sliding plate, a third wedge block is connected to the bottom of the movable plate, and the third wedge block is slidably engaged with the third wedge groove.

[0009] As an optional solution for a high-stability high-current relay described in the present invention, the sliding plate is configured as a C-shaped plate, and the input rack plate is slidably inserted into the side of the sliding plate.

[0010] As an optional solution for a high-stability high-current relay described in the present invention, wherein: a mounting plate is installed on the base, a second armature is slidably installed on the side of the mounting plate, a driving rod is slidably provided on the top of the base, a safety rack plate is connected to the end of the driving rod, a compression spring is provided on the side of the driving rod, and a non-elastic pull rope is connected to the other end of the driving rod, a pulley is installed on the top of the mounting plate, and a fourth gear is coaxially installed on the top of the mounting column. When the second armature is attracted by the electromagnet, the safety rack plate is meshed with the fourth gear for transmission, and the cam rotates 180°.

[0011] As an optional solution for a high-stability high-current relay described in the present invention, the base surface is provided with a first slide groove, the bottom of the driving rod is connected to a first slider, the first slider is slidably engaged with the first slide groove, the compression spring is connected between the first slide groove and the first slider, the second armature side is connected to a second slider, the mounting plate side is provided with a second slide groove, the second slide groove has a limiting groove inside, the second slider is slidably engaged with the second slide groove, the second slider is connected to a limiting block on the side of the second slider, and the limiting block is slidably engaged with the limiting groove.

[0012] As an optional solution for a high-stability high-current relay described in the present invention, the contact mechanism includes a first supporting spring sheet and a second supporting spring sheet, the first supporting spring sheet and the second supporting spring sheet are respectively connected to the surface of the base, the first supporting spring sheet and the second supporting spring sheet are respectively provided with a first contact and a second contact, and the first contact and the second contact are intermittently fitted.

[0013] As an optional solution for a high-stability high-current relay described in the present invention, a first pull ring is installed on the second armature, a second pull ring is connected to the top of the safety rack plate, and the inelastic pull rope is connected between the first pull ring and the second pull ring.

[0014] As an optional solution for a high-stability high-current relay described in the present invention, the bottom of the base is connected to a first terminal, a second terminal and a third terminal, the bottom of the first terminal is respectively connected to a first circuit and a second circuit, the side of the second terminal is connected to the third circuit, and the side of the third terminal is connected to a fourth circuit.

[0015] The present invention has the following beneficial effects:

[0016] 1. The high-current relay with strong stability, through the setting of the cam, when the electromagnet is energized, the first rotating shaft on the side of the first armature rotates, and the second rotating shaft is driven to rotate through the pulley group, the first gear is meshed and rotated, and the first gear is meshed and transmitted with the input rack plate, so that the second gear drives the mounting column to rotate, and at the same time drives the cam to rotate and slide and squeeze the first supporting spring piece, the first contact on the first supporting spring piece contacts the second contact, the rotation of the cam provides a more stable contact force through progressive squeezing, and the base circle tangent point is turned from facing the first supporting spring piece to the eccentric vertex contacting the first supporting spring piece, so that the first supporting spring piece is not only bent by the contact, but also because the side space of the first supporting spring piece is occupied by the cam, it is difficult for the first supporting spring piece to rebound, thereby reducing the bouncing phenomenon of the contact due to instantaneous impact, and solving the problem that the contacts of the traditional relay will open and close quickly many times before actually contacting or disconnecting, and the contact bounce may cause the circuit to be unable to be reliably switched.

[0017] 2. This high-current relay with strong stability is equipped with a sliding plate. The sliding plate cooperates with the moving plate. When the input rack plate drives the sliding plate to move, the sliding plate and the moving plate move forward together, and the force storage spring begins to store force. When the contact rod contacts the fixed block and the fixed block pushes the contact rod upward, the force storage spring releases pressure and pushes the sliding plate forward quickly. The output rack plate and the second gear quickly mesh and drive, driving the installation column and the cam to rotate. During the process of the cam slowly rotating and contacting the first contact, the contact slowly opens and closes, which is easy to generate arcs and high temperatures, and may cause aging of surrounding insulating materials. Through the rapid contact between the cam and the first contact, the opening and closing time of the contact is shortened, and the duration and energy of the arc are significantly reduced, thereby improving the service life and reliability of the contact.

[0018] 3. This high-current relay with strong stability is equipped with a safety rack plate. The safety rack plate cooperates with the fourth gear. When a short circuit occurs in the circuit, the current at the location of the electromagnet becomes larger, the second armature is sucked down, and the elastic pull rope pulls the safety rack plate to engage with the fourth gear. The eccentric vertex contacts the first supporting spring piece and turns into a circular tangent point facing the first supporting spring piece, so that the first supporting spring piece rebounds and becomes straight, and the first contact is separated from the second contact. Cutting off the circuit in time can effectively reduce the risk of component damage, extend the service life of the equipment, reduce maintenance costs and downtime, and make the entire solution better. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention.

[0021] Figure 3 It is a schematic diagram of the mounting column and cam structure of the present invention.

[0022] Figure 4 It is a schematic diagram of the first contact structure of the present invention.

[0023] Figure 5 It is a schematic diagram of the second armature structure of the present invention.

[0024] Figure 6 For the present invention Figure 1 A is an enlarged structural diagram of FIG.

[0025] Figure 7 For the present invention Figure 1 Schematic diagram of the enlarged structure at B.

[0026] Figure 8 For the present invention Figure 2 Enlarged structural diagram at C.

[0027] Fig. 9 It is a front view structural schematic diagram of the contact mechanism of the present invention.

[0028] Fig.10 It is a schematic diagram of the structure of the first wedge block of the present invention.

[0029] In the figure: 110, base; 123, first armature; 124, second armature; 125, electromagnet; 130, fixed plate; 131, first rotating shaft; 134, first gear; 135, sliding plate; 136, first wedge groove; 137, first wedge block; 138, input rack plate; 145, base; 146, mounting column; 147, cam; 152, moving plate; 153, third wedge groove; 154, third wedge block; 155, fixed column; 156, storage spring; 157, extrusion inclined block; 160, L-shaped support rod; 161, collar; 162, contact rod; 163, output rack plate; 165, second gear; 170, fourth gear; 180, contact mechanism; 182, first supporting spring; 183, first Two supporting spring pieces; 185, first contact; 190, second contact; 191, mounting plate; 192, second slider; 193, second slide groove; 194, limit block; 195, limit groove; 213, first pull ring; 220, second pull ring; 221, non-elastic pull rope; 230, first wiring terminal; 231, second wiring terminal; 232, third wiring terminal; 233, first circuit; 234, second circuit; 235, third circuit; 236, fourth circuit; 300, fixed block; 301, first slide groove; 302, driving rod; 303, first slider; 305, insurance rack plate; 306, compression spring; 500, fixed platform; 307, pulley; 800, resistance block; 900, second rotating shaft; 901, pulley assembly. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1: This embodiment is intended to help solve the problem that the contacts of traditional relays will open and close quickly multiple times before actually contacting or disconnecting. Contact bounce may cause the circuit to be unable to be reliably connected and disconnected. Please refer to Figure 1-10 A high-current relay with strong stability includes a housing and an internal base 110, an electromagnet 125 and a contact mechanism 180, the electromagnet 125 and the contact mechanism 180 are both installed on the base 110, and a fixing plate 130 and a fixing platform 500 are installed on the base 110.

[0032] See Figure 1 The fixed plate 130 is rotatably provided with a first armature 123 cooperating with the electromagnet 125, the fixed platform 500 is slidably provided with a sliding plate 135, the sliding plate 135 is slidably provided with an output rack plate 163, the base 110 is rotatably provided with a cam 147, the output rack plate 163 is transmission-coordinated with the cam 147, the cam 147 is in intermittent contact with the contact mechanism 180, the end of the first armature 123 away from the electromagnet 125 is provided with a first rotating shaft 131, and the first rotating shaft 131 is rotatably connected with the fixed plate 130 A second rotating shaft 900 is rotatably installed on the side of the fixed plate 130, a first gear 134 is sleeved on the outer side of the second rotating shaft 900, a pulley set 901 is sleeved on the outer side of the first rotating shaft 131 and the second rotating shaft 900, a base 145 is installed on the surface of the base 110, a mounting column 146 is rotatably installed on the base 145, a cam 147 is eccentrically installed with the mounting column 146, an input rack plate 138 is slidably installed on the side of the sliding plate 135, and a second gear 165 that cooperates with the output rack plate 163 is provided on the mounting column 146.

[0033] The electromagnet 125 includes a magnet body and a coil, and the coil is sleeved on the outside of the magnet body. When current passes through the coil of the electromagnet 125, a magnetic field is generated around the coil according to Ampere's law. The strength of the magnetic field is proportional to the number of coil turns, the current size and the properties of the core material. The magnetic field attracts the armature, which is usually a ferromagnetic material, and moves it toward the core. Through the movement of the armature, the external mechanical components are driven to complete specific actions such as opening and closing of contacts, opening and closing of valves, etc. When the current disappears, the magnetic field disappears, and the armature is reset under the action of a spring or gravity. The use of the electromagnet 125 is currently a conventional prior art.

[0034] In this embodiment, when the electromagnet 125 is energized, the first armature 123 is attracted to the electromagnet 125, the first rotating shaft 131 on the side of the first armature 123 rotates, the second rotating shaft 900 rotates through the pulley group 901 on the side of the first rotating shaft 131, the first gear 134 is driven by the second rotating shaft 900, and at the same time the first gear 134 is engaged with the input rack plate 138, so that the input rack plate 138 drives the sliding plate 135 to move, and the output rack plate 163 on the side of the sliding plate 135 is engaged with the second gear 165 connected to the mounting column 146 for transmission, driving the mounting column 146 to rotate, so that the cam 147 at the top of the mounting column 146 rotates.

[0035] The contact mechanism 180 includes a first supporting spring piece 182 and a second supporting spring piece 183, the first supporting spring piece 182 and the second supporting spring piece 183 are respectively connected to the surface of the base 110, the first supporting spring piece 182 and the second supporting spring piece 183 are respectively provided with a first contact 185 and a second contact 190, the first contact 185 and the second contact 190 are intermittently fitted, and the second armature 124 is installed with a first pull ring 213.

[0036] The initial state of the cam 147 is that the eccentric apex is away from the first supporting spring piece 182. When the cam 147 rotates, the eccentric apex of the cam 147 gradually slides and squeezes with the first supporting spring piece 182, so that the first supporting spring piece 182 is pressed toward the second supporting spring piece 183, and the first contact 185 on the first supporting spring piece 182 contacts the second contact 190 to realize power supply.

[0037] In this embodiment, through the setting of the cam 147, when the electromagnet 125 is energized, the first rotating shaft 131 on the side of the first armature 123 rotates, the second rotating shaft 900 rotates through the pulley set 901 on the side of the first rotating shaft 131, and the first gear 134 is driven by the second rotating shaft 900. At the same time, the first gear 134 is meshed with the input rack plate 138 for transmission, so that the second gear 165 drives the mounting column 146 to rotate, and at the same time drives the cam 147 to rotate and slide and squeeze the first supporting spring sheet 182, and the first contact 185 on the first supporting spring sheet 182 contacts the second contact 190. The rotation of the cam 147 provides a smoother contact force through progressive extrusion, and changes from the base circle tangent point facing the first supporting spring piece 182 to the eccentric vertex contacting the first supporting spring piece 182, so that the first supporting spring piece 182 is not only bent by the contact, but also because the side space of the first supporting spring piece 182 is occupied by the cam 147, it is difficult for the first supporting spring piece 182 to rebound, thereby reducing the bouncing phenomenon of the contacts due to instantaneous impact, and solving the problem that the contacts of traditional relays will open and close quickly multiple times before actual contact or disconnection, and the contact bounce may cause the circuit to be unable to be reliably switched on and off.

[0038] Embodiment 2: This embodiment is intended to promote the solution of the problem that arcs and high temperatures are easily generated during the slow opening and closing of contacts. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1-10 A movable plate 152 is provided on the sliding plate 135, and an extrusion oblique block 157 is installed on the surface of the movable plate 152. An L-shaped support rod 160 is connected to the side of the fixed platform 500. A ring 161 is rotatably sleeved on the outer side of the L-shaped support rod 160. A resistance rod 162 is integrally connected to the side of the ring 161. A resistance block 800 is connected to the bottom of the resistance rod 162. The resistance block 800 intermittently resists the side of the extrusion oblique block 157, and the resistance rod 162 intermittently resists the side of the fixed block 300. A fixed block 300 is fixedly provided on the sliding plate 135, and a fixed column 155 is slidably inserted on the side of the fixed block 300. The other end of the fixed column 155 is connected to the side of the movable plate 152, and a storage spring 156 is sleeved on the outer side of the fixed column 155.

[0039] See Figure 3When the input rack plate 138 drives the sliding plate 135 to move, the sliding plate 135 moves the plate 152 forward together. When the extrusion inclined block 157 is blocked by the resistance block 800 on the side of the resistance rod 162 on the side of the ring 161, it will stay in place, and the storage spring 156 begins to store force, and the sliding plate 135 continues to move forward. When the resistance rod 162 contacts the fixed block 300, the fixed block 300 pushes the resistance rod 162 upward. At this time, the resistance block 800 is no longer blocked, and the storage spring 156 releases pressure to push the sliding plate 135 forward rapidly. The output rack plate 163 on the side of the sliding plate 135 quickly meshes with the second gear 165 connected to the mounting column 146 for transmission, driving the mounting column 146 to rotate, so that the cam 147 at the top of the mounting column 146 rotates.

[0040] A first wedge-shaped groove 136 is provided on the fixed table 500, and a first wedge block 137 is installed at the bottom of the sliding plate 135. The first wedge block 137 is slidably engaged with the surface of the first wedge groove 136. A third wedge groove 153 is provided on the surface of the sliding plate 135. A third wedge block 154 is connected to the bottom of the movable plate 152. The third wedge block 154 is slidably engaged with the third wedge groove 153. The sliding plate 135 is configured as a C-shaped plate, and the input rack plate 138 is slidably inserted into the side of the sliding plate 135.

[0041] When the sliding plate 135 is moved by the input rack plate 138, the sliding plate 135 moves forward with the moving plate 152. When the extruding inclined block 157 is blocked by the contact block 800 on the side of the contact rod 162 on the side of the collar 161, it will stay in place, and the storage spring 156 starts to store force, and the sliding plate 135 continues to move forward. When the contact rod 162 contacts the fixed block 300, the fixed block 300 pushes the contact rod 162 upward. At this time, the contact block 800 is not blocked, and the storage spring 156 releases pressure to push the sliding plate 135 forward quickly. The output rack plate 163 on the side of the sliding plate 135 is quickly meshed with the second gear 165 connected to the mounting column 146, driving the mounting column 146 to rotate rapidly, so that the cam 147 at the top of the mounting column 146 rotates rapidly, and the base circle tangent point is turned to the first support spring 182 to the eccentric vertex and the first support spring 182 quickly conflicts. Through the accumulation and release of the force storage spring 156, the cam 147 is stationary in the early stage of the action and rotates rapidly in the later stage of the action, so that the eccentric vertex quickly contacts the first supporting spring 182, the opening and closing time of the first contact 185 and the second contact 190 is shortened, and the duration and energy of the arc are significantly reduced, thereby reducing the generation of the arc and improving the service life and reliability of the first contact 185 and the second contact 190.

[0042] Embodiment 3: This embodiment is intended to help solve the problem that when a short circuit occurs in the circuit, the device may be overloaded, out of control, or even burn out the circuit or load. This embodiment is an improvement made on the basis of Embodiment 1. For details, please refer to Figure 1-10 A mounting plate 191 is mounted on the base 110, a second armature 124 is slidably mounted on the side of the mounting plate 191, a driving rod 302 is slidably mounted on the top of the base 110, a safety rack plate 305 is connected to the end of the driving rod 302, a compression spring 306 is arranged on the side of the driving rod 302, a non-elastic pull rope 221 is connected to the other end of the driving rod 302, a pulley 307 is mounted on the top of the mounting plate 191, a fourth gear 170 is coaxially mounted on the top of the mounting column 146, when the second armature 124 is attracted by the electromagnet 125, the safety rack plate 305 is meshed with the fourth gear 170 for transmission, and the cam 147 rotates 180°.

[0043] For specific settings, see Figure 1 A second pull ring 220 is connected to the top of the safety rack plate 305, and a non-elastic pull rope 221 is connected between the first pull ring 213 and the second pull ring 220. A first terminal 230, a second terminal 231 and a third terminal 232 are connected to the bottom of the base 110. The bottom of the first terminal 230 is respectively connected to a first circuit 233 and a second circuit 234, the side of the second terminal 231 is connected to a third circuit 235, and the side of the third terminal 232 is connected to a fourth circuit 236.

[0044] During normal use, the second armature 124 is located at a higher position and has a larger distance from the electromagnet 125, so the magnetic force of the electromagnet 125 cannot affect the second armature 124. When a short circuit occurs in the circuit, the current at the position where the electromagnet 125 is located becomes larger, so the magnetic force is enhanced, causing the second armature 124 to be sucked down, and the first pull ring 213 on the surface of the second armature 124 drives the non-elastic pull rope 221 to move on the pulley 307, so that the non-elastic pull rope 221 pulls the safety rack plate 305 to move on the base 110, and the safety rack plate 305 overcomes the elastic force of the compression spring 306 and meshes with the fourth gear 170, driving the mounting column 146 to rotate, causing the cam 147 to rotate, the storage spring 156 to compress, and the eccentric vertex of the cam 147 to stagger with the first supporting spring 182, and the first supporting spring 182 rebounds to disconnect the circuit.

[0045] A first slide groove 301 is provided on the surface of the base 110, and a first slider 303 is connected to the bottom of the driving rod 302. The first slider 303 is slidably engaged with the first slide groove 301. A compression spring 306 is connected between the first slide groove 301 and the first slider 303. A second slider 192 is connected to the side of the second armature 124. A second slide groove 193 is provided on the side of the mounting plate 191. A limiting groove 195 is provided inside the second slide groove 193. The second slider 192 is slidably engaged with the second slide groove 193. A limiting block 194 is connected to the side of the second slider 192. The limiting block 194 is slidably engaged with the limiting groove 195.

[0046] In this embodiment: through the setting of the safety rack plate 305, the cooperation between the safety rack plate 305 and the fourth gear 170, when a short circuit occurs in the circuit, the current at the position where the electromagnet 125 is located becomes larger, the second armature 124 is sucked down, and the elastic pull rope 221 pulls the safety rack plate 305 to engage with the fourth gear 170, and the cam 147 is transformed from the eccentric vertex contacting the first supporting spring piece 182 to the circular tangent point facing the first supporting spring piece 182, so that the first supporting spring piece 182 rebounds and becomes straight, and the first contact 185 is separated from the second contact 190. Timely cutting off of the circuit can effectively reduce the risk of component damage, extend the service life of the equipment, and reduce maintenance costs and downtime.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A high-current relay with strong stability, comprising a housing and an internal base (110), an electromagnet (125) and a contact mechanism (180), characterized in that: The electromagnet (125) and the contact mechanism (180) are both mounted on the base (110); a fixed plate (130) and a fixed platform (500) are mounted on the base (110); a first armature (123) cooperating with the electromagnet (125) is rotatably disposed on the fixed plate (130); a sliding plate (135) is slidably disposed on the fixed platform (500); an output rack plate (163) is slidably disposed on the sliding plate (135); a cam (147) is rotatably disposed on the base (110); the output rack plate (163) is in transmission cooperation with the cam (147); and the cam (147) is in intermittent contact with the contact mechanism (180).

2. A high-current relay with strong stability according to claim 1, characterized in that: A first rotating shaft (131) is installed at one end of the first armature (123) away from the electromagnet (125), the first rotating shaft (131) is rotatably connected to the fixed plate (130), a second rotating shaft (900) is rotatably installed on the side of the fixed plate (130), a first gear (134) is sleeved on the outer side of the second rotating shaft (900), a pulley group (901) is sleeved on the outer side of the first rotating shaft (131) and the second rotating shaft (900), a base (145) is installed on the surface of the base (110), a mounting column (146) is rotatably installed on the base (145), the cam (147) and the mounting column (146) are eccentrically installed, an input rack plate (138) is slidably installed on the side of the sliding plate (135), and a second gear (165) matching with the output rack plate (163) is provided on the mounting column (146).

3. A high-current relay with strong stability according to claim 1, characterized in that: The sliding plate (135) is provided with a movable plate (152), the surface of the movable plate (152) is installed with an extrusion inclined block (157), the side of the fixed platform (500) is connected with an L-shaped support rod (160), the outer side of the L-shaped support rod (160) is rotatably sleeved with a collar (161), the side of the collar (161) is integrally connected with a resistance rod (162), the bottom of the resistance rod (162) is connected with a resistance block (800), and the resistance block ( 800) intermittently abuts against the side of the extrusion bevel block (157), the abutment rod (162) intermittently abuts against the side of the fixed block (300), the fixed block (300) is fixedly arranged on the sliding plate (135), a fixed column (155) is slidably inserted into the side of the fixed block (300), the other end of the fixed column (155) is connected to the side of the movable plate (152), and a force storage spring (156) is sleeved on the outer side of the fixed column (155).

4. A high-current relay with strong stability according to claim 3, characterized in that: The fixed platform (500) is provided with a first wedge-shaped groove (136), the bottom of the sliding plate (135) is provided with a first wedge-shaped block (137), the first wedge-shaped block (137) is slidably engaged with the surface of the first wedge-shaped groove (136), the surface of the sliding plate (135) is provided with a third wedge-shaped groove (153), the bottom of the movable plate (152) is connected with a third wedge-shaped block (154), the third wedge-shaped block (154) is slidably engaged with the third wedge-shaped groove (153).

5. A high-current relay with strong stability according to claim 1, characterized in that: The sliding plate (135) is configured as a C-shaped plate, and the input rack plate (138) is slidably inserted into a side portion of the sliding plate (135).

6. A high-current relay with strong stability according to claim 4, characterized in that: A mounting plate (191) is mounted on the base (110), a second armature (124) is slidably mounted on the side of the mounting plate (191), a driving rod (302) is slidably mounted on the top of the base (110), an end of the driving rod (302) is connected to a safety rack plate (305), a compression spring (306) is mounted on the side of the driving rod (302), the other end of the driving rod (302) is connected to a non-elastic pull rope (221), a pulley (307) is mounted on the top of the mounting plate (191), a fourth gear (170) is coaxially mounted on the top of the mounting column (146), and when the second armature (124) is attracted by the electromagnet (125), the safety rack plate (305) meshes with the fourth gear (170) for transmission, and the cam (147) rotates 180 degrees.

7. A high-current relay with strong stability according to claim 6, characterized in that: A first slide groove (301) is provided on the surface of the base (110), a first slider (303) is connected to the bottom of the driving rod (302), the first slider (303) is slidably engaged with the first slide groove (301), the compression spring (306) is connected between the first slide groove (301) and the first slider (303), a second slider (192) is connected to the side of the second armature (124), a second slide groove (193) is provided on the side of the mounting plate (191), a limiting groove (195) is provided inside the second slide groove (193), the second slider (192) is slidably engaged with the second slide groove (193), a limiting block (194) is connected to the side of the second slider (192), and the limiting block (194) is slidably engaged with the limiting groove (195).

8. A high-current relay with strong stability according to claim 1, characterized in that: The contact mechanism (180) comprises a first supporting spring sheet (182) and a second supporting spring sheet (183); the first supporting spring sheet (182) and the second supporting spring sheet (183) are respectively connected to the surface of the base (110); a first contact (185) and a second contact (190) are respectively arranged on the first supporting spring sheet (182) and the second supporting spring sheet (183); the first contact (185) and the second contact (190) are intermittently fitted.

9. A high-current relay with strong stability according to claim 6, characterized in that: A first pull ring (213) is installed on the second armature (124), a second pull ring (220) is connected to the top of the safety rack plate (305), and the inelastic pull rope (221) is connected between the first pull ring (213) and the second pull ring (220).

10. A high-current relay with strong stability according to claim 1, characterized in that: The base (110) is connected to a first wiring terminal (230), a second wiring terminal (231) and a third wiring terminal (232) at the bottom, the first wiring terminal (230) is respectively connected to a first circuit (233) and a second circuit (234) at the bottom, the second wiring terminal (231) is connected to a third circuit (235) at the side, and the third wiring terminal (232) is connected to a fourth circuit (236) at the side.

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