High-efficiency arc extinguishing motor relay

Abstract

The motor relay comprises a housing assembly, a driving assembly, a transmission assembly, a contact assembly, an arc striking member and an arc extinguishing assembly. The contact assembly comprises a movable contact and a static contact which correspond to each other, the movable contact is located on the bow piece set provided with the elastic deformation part, and the driving assembly drives the transmission part so that the movable contact can abut against or be away from the static contact; one end of the arc striking piece is connected with the movable contact, and the other end abuts against the arc extinguishing assembly; the arc extinguishing assembly is located on the side of the movable contact and the static contact and comprises a magnetic piece and a plurality of arc extinguishing grid pieces, and the magnetic piece is connected with the arc extinguishing grid pieces. According to the utility model, the magnetic members magnetize the adjacent arc extinguishing grid sheets, so that a magnetic field is generated between the arc extinguishing grid sheets, and the magnetic field lengthens, cools and extinguishes the arc, thereby effectively improving the arc extinguishing effect; according to the utility model, the arc striking member is arranged to guide the arc to rapidly enter the arc extinguishing assembly, thereby further improving the arc extinguishing effect; according to the utility model, the elastic deformation part is arranged to provide pre-pressure for the movable contact to abut against the static contact, so that the performance stability is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to relay field especially relates to a high -efficient arc extinguishing motor relay. BACKGROUND

[0002] The motor relay is different from the traditional electromagnetic relay, and its main principle is that a small current control micro motor drives a transmission mechanism to quickly close or pull apart the contact point to achieve the purpose of circuit "switching", which has the advantages of fast action, small size, low power consumption and high stability.

[0003] When the two contact points open and close, the metal surface of the contact head causes the escape of electrons due to primary electron emission, and the gas atoms or molecules in the gap will ionize to produce electrons and ions. In addition, the electron or ion bombardment of the emission surface will cause secondary electron emission. When the ion concentration in the gap is large enough, the gap is electrically broken down and an arc occurs. The arc has a thermal effect that can easily ablate and adhere, and even cause a fire. Therefore, how to efficiently extinguish the arc has become an important problem for relays. However, the existing motor relay has the problems of poor arc extinguishing effect and unstable performance. SUMMARY

[0004] The utility model provides a kind of high -efficient arc extinguishing motor relay to more exactly solve the above-mentioned arc extinguishing effect and the problem of unstable performance.

[0005] The utility model is implemented by the following technical solutions:

[0006] The utility model provides a kind of high -efficient arc extinguishing motor relay, including shell assembly, drive assembly, transmission assembly, contact assembly, arc leading piece and arc extinguishing assembly;

[0007] The transmission assembly includes a push-pull rod, and the drive assembly is drivingly connected with the transmission assembly and drives the push-pull rod to move.

[0008] The contact assembly includes a moving piece and a static piece, the static piece is fixed with a static contact, the moving piece is fixed with a bow piece set, the bow piece set is fixed with a moving contact corresponding to the static contact, the push-pull rod is connected to the bow piece set and drives the moving contact to abut or move away from the static contact.

[0009] The arc leading piece includes a first end and a second end, the first end is fixed between the bow piece set and the moving contact, and the second end abuts the arc extinguishing assembly.

[0010] The arc extinguishing assembly is located on the side of the moving contact and the static contact, and includes a magnetic piece and a plurality of parallel arranged arc extinguishing fins, the magnetic piece is connected with the arc extinguishing fins, and the line direction of the two poles of the magnetic piece is perpendicular or parallel to the arc extinguishing fins.

[0011] Further, the shell assembly comprises a bottom shell, the bottom shell is internally provided with a first enclosing part, the first enclosing part and the bottom shell form a first mounting space, the arc extinguishing assembly is located in the first mounting space, and any arc extinguishing fin respectively abuts against the first enclosing part and the magnetic part.

[0012] Further, the first mounting space is internally provided with a first limiting block, and the first limiting block is used for limiting the movement of the magnetic part.

[0013] Further, the second end is curved towards the direction of the arc extinguishing assembly, and the second end always abuts against the arc extinguishing fin when the movable contact abuts against or is away from the fixed contact.

[0014] Further, the arc extinguishing assembly comprises a fixed end and a free end, the fixed end is fixed to the movable piece, the free end is fixedly provided with a movable contact, and a resilient deformation part is arranged between the fixed end and the free end, and the resilient deformation part is used for providing a pre-pressure for the movable contact when the movable contact abuts against the fixed contact.

[0015] Further, the transmission assembly further comprises a plurality of transmission gears and corresponding center shafts, the transmission gears comprise a primary gear, a secondary gear and a sector gear, the primary gear is in meshing transmission with the secondary gear, and the secondary gear is in meshing transmission with the sector gear; the driving assembly comprises an output gear, the output gear is in meshing transmission with the primary gear, and drives the sector gear to reciprocating rotate.

[0016] Further, the sector gear is fixedly provided with a connecting piece, the push-pull rod is provided with a first through hole, the connecting piece is embedded in the first through hole and forms a sliding connection, so that the sector gear drives the push-pull rod to move.

[0017] Further, the push-pull rod is provided with a second limiting block and a third limiting block, the free end is provided with a groove, the free end is clamped between the second limiting block and the third limiting block through the groove, the second limiting block pushes the free end downward to make the movable contact abut against the fixed contact, and the third limiting block pulls the free end upward to make the movable contact away from the fixed contact.

[0018] Further, the shell assembly further comprises an upper cover, the upper cover is provided with a clamping hole, the bottom shell is correspondingly provided with a clamping block, the clamping block abuts against the clamping hole, so that the bottom shell and the upper cover form a snap connection.

[0019] Further, the bottom shell is provided with a plurality of first fixing holes, the upper cover is provided with a plurality of second fixing holes, and the two ends of the center shaft are respectively embedded in the first fixing hole and the second fixing hole.

[0020] The utility model discloses beneficial effect:

[0021] The utility model proposes setting up arc extinguishing assembly on the side of the moving contact and the static contact, and the arc extinguishing assembly includes a plurality of parallelly arranged arc extinguishing grids and magnetic pieces, the magnetic pieces are connected with the arc extinguishing grid sheet, the magnetic pieces generate a magnetic field, and the adjacent arc extinguishing grid sheets are magnetized with different magnetism, so that the magnetic field is generated between the adjacent arc extinguishing grid sheets, the magnetic field lengthens and cools the arc to extinguish, and the arc extinguishing effect is effectively improved. DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the utility model will be further described below in combination with the drawings and the embodiments, and the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the premise of the drawings:

[0023] Figure 1 It is a stereogram of a high-efficiency arc extinguishing motor relay in an embodiment of the utility model;

[0024] Figure 2 It is an internal stereogram of a high-efficiency arc extinguishing motor relay when the connecting direction of the two poles of the magnetic piece is perpendicular to the arc extinguishing grid sheet in an embodiment of the utility model;

[0025] Figure 3 It is an internal plan view of a high-efficiency arc extinguishing motor relay when the connecting direction of the two poles of the magnetic piece is parallel to the arc extinguishing grid sheet in an embodiment of the utility model;

[0026] Figure 4 It is a plan view of the bottom shell in an embodiment of the utility model;

[0027] Figure 5 It is a stereogram of the upper cover in an embodiment of the utility model;

[0028] Figure 6 It is a stereogram of the driving assembly and the transmission assembly in an embodiment of the utility model;

[0029] Figure 7 It is a stereogram of the fan-shaped gear in an embodiment of the utility model;

[0030] Figure 8 It is a stereogram of the push-pull rod in an embodiment of the utility model.

[0031] Label description:

[0032] 1, housing assembly; 11, bottom shell; 12, upper cover; 111, clamping block; 112, first fixing hole; 113, first enclosing part; 114, first mounting space; 115, first limiting block; 116, second enclosing part; 117, second mounting space; 121, clamping hole; 122, second fixing hole;

[0033] 2, drive assembly; 21, drive part; 22, output gear;

[0034] 3, transmission assembly; 31, primary gear; 32, secondary gear; 33, sector gear; 34, center shaft; 35, push-pull rod; 331, connecting piece; 351, connecting end; 352, push-pull end; 3511, first through hole; 3521, second limiting block; 3522, third limiting block;

[0035] 4, contact assembly; 41, moving piece; 42, static piece; 43, bow piece group; 411, second through hole; 421, static contact; 431, fixed end; 432, free end; 433, elastic deformation part; 4321, moving contact; 4322, groove;

[0036] 5, arc striking piece; 51, first end; 52, second end;

[0037] 6, arc extinguishing assembly; 61, magnetic piece; 62, arc extinguishing grid piece. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the utility model more clear, the following will be further described in detail with the help of the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0039] Please refer to Figures 1-8The utility model provides a motor relay of high -efficient arc extinguishing, including casing assembly 1, drive assembly 2, transmission assembly 3, contact assembly 4, lead arc piece 5 and arc extinguishing subassembly 6, transmission assembly 3 includes push -and -pull rod 35, drive assembly 2 is connected with transmission assembly 3 transmission, and drive push -and -pull rod 35 movement, contact assembly 4 includes moving piece 41 and static sheet 42, and static sheet 42 is fixed with static contact point 421, and moving piece 41 is fixed with bow piece group 43, and bow piece group 43 is fixed with the dynamic contact point 4321 corresponding with static contact point 421, and push -and -pull rod 35 connects bow piece group 43, and drives dynamic contact point 4321 and abuts or away from static contact point 421, lead arc piece 5 includes first end 51 and second end 52, and first end 51 is fixed between bow piece group 43 and dynamic contact point 4321, and second end 52 abuts arc extinguishing subassembly 6, arc extinguishing subassembly 6 is located in the side of dynamic contact point 4321 and static contact point 421, and arc extinguishing subassembly 6 includes magnetic piece 61 and multiple parallelly arranged arc extinguishing lath 62, and magnetic piece 61 is connected with arc extinguishing lath 62, and the line direction of two poles of magnetic piece 61 is perpendicular or parallel with arc extinguishing lath 62.

[0040] The utility model discloses a high -efficient arc extinguishing motor relay, including casing assembly 1, drive assembly 2, transmission assembly 3, contact assembly 4, arc -starting piece 5 and arc extinguishing assembly 6, casing assembly 1 includes bottom shell 11 and upper cover 12, drive assembly 2 includes output gear 22, transmission assembly 3 includes primary gear 31, secondary gear 32, sector gear 33 and push -and -pull rod 35;Upper cover 12 is equipped with the engaging hole 121, and bottom shell 11 is equipped with the clamping block 111 correspondingly, and the clamping block 111 abuts the engaging hole 121 to make bottom shell 11 and upper cover 12 form the snap -fit connection;Output gear 22 and primary gear 31 are engaged transmission, and primary gear 31 and secondary gear 32 are engaged transmission, and secondary gear 32 and sector gear 33 are engaged transmission, realize drive assembly 2 drive sector gear 33 rotation;Sector gear 33 is solid with connecting piece 331, and push -and -pull rod 35 includes connecting end 351 and push -and -pull end 352, and connecting end 351 is equipped with the first through -hole 3511, and connecting piece 331 is embedded in the first through -hole 3511, and forms the sliding connection, to make sector gear 33 drive push -and -pull rod 35 movement;Contact assembly 4 includes moving blade 41 and static sheet 42, and static sheet 42 is solid with static contact point 421, and the bow piece group 43 includes fixed end 431 and free end 432, and fixed end 431 is fixed on moving blade 41, and free end 432 is solid with the dynamic contact point 4321 corresponding with static contact point 421, and the push -and -pull end 352 of push -and -pull rod 35 is connected the free end 432 of bow piece group 43, and drives dynamic contact point 4321 and abuts or is far from static contact point 421;Between fixed end 431 and free end 432 is equipped with the elastic deformation part 433, and the elastic deformation part 433 is used for providing pre -pressure when dynamic contact point 4321 and abuts static contact point 421, is favorable to dynamic contact point 4321 and abuts static contact point 421 more stable, and further improve the performance stability of motor relay;Arc -starting piece 5 includes first end 51 and second end 52, and first end 51 is fixed between bow piece group 43 and dynamic contact point 4321, and second end 52 is curved towards the direction of arc extinguishing assembly 6, when dynamic contact point 4321 and abuts or is far from static contact point 421, second end 52 always abuts arc extinguishing assembly 6, and arc -starting piece 5 guides electric arc to be more quickly entered arc extinguishing assembly 6, effectively improve the arc extinguishing effect;Arc extinguishing assembly 6 is located in the side of dynamic contact point 4321 and static contact point 421, and arc extinguishing assembly 6 includes magnetic piece 61 and a plurality of parallelly arranged arc extinguishing louver 62, and magnetic piece 61 is connected with arc extinguishing louver 62, and the line direction of the two poles of magnetic piece 61 is perpendicular or parallel with arc extinguishing louver 62, and magnetic piece 61 generates magnetic field, and with the adjacent arc extinguishing louver 62 magnetization on different magnetism, so that the magnetic field between adjacent arc extinguishing louver 62 is generated, and the magnetic field will electric arc lengthen and cool and extinguish, further effectively improve the arc extinguishing effect.

[0041] The utility model provides a set up arc extinguishing subassembly 6 in the side of moving contact 4321 and static contact 421, arc extinguishing subassembly 6 includes a plurality of parallelly arranged arc extinguishing grid and magnetic piece 61, magnetic piece 61 is connected with arc extinguishing grid piece 62, magnetic piece 61 generates magnetic field, and the adjacent arc extinguishing grid piece 62 magnetization zone is different magnetism, so that the magnetic field between adjacent arc extinguishing grid piece 62 generates, and the magnetic field will electric arc lengthen and cool down and extinguish, effectively improve the arc extinguishing effect, the utility model provides sets up arc guiding piece 5, and one end of arc guiding piece 5 is fixedly connected with moving contact 4321, and the other end is always in abutment with arc extinguishing subassembly 6, and arc guiding piece 5 guides electric arc to enter arc extinguishing subassembly 6 quickly, further improves arc extinguishing effect, the utility model provides that the bow piece group 43 sets up elastic deformation part 433, and elastic deformation part 433 is used for providing pre-pressure when moving contact 4321 is in abutment with static contact 421, is favorable to the more stable connection of moving contact 4321 and static contact 421, and further improves the performance stability of motor relay.

[0042] Please refer to Figures 2-4 Arc extinguishing subassembly 6 includes magnetic piece 61 and a plurality of parallelly arranged arc extinguishing grid piece 62, and arc extinguishing subassembly 6 is located in the side of moving contact 4321 and static contact 421, and first enclosing member 113 is arranged in the inside of bottom shell 11, and first enclosing member 113 forms first installation space 114 with bottom shell 11, and arc extinguishing subassembly 6 is located in first installation space 114, and first limiting block 115 is arranged in the inside of first installation space 114, and first limiting block 115 is used for limiting the movement of magnetic piece 61, and any arc extinguishing grid piece 62 is in abutment with first enclosing member 113 and magnetic piece 61 respectively, and the direction of the connecting line of the two poles of magnetic piece 61 is perpendicular to or parallel to arc extinguishing grid piece 62.

[0043] In specific implementation, first enclosing member 113 is arranged in the inside of bottom shell 11, and first enclosing member 113 forms first installation space 114 with bottom shell 11, and arc extinguishing subassembly 6 is located in first installation space 114 and in the side of moving contact 4321 and static contact 421, arc extinguishing subassembly 6 includes magnetic piece 61 and a plurality of parallelly arranged arc extinguishing grid piece 62, in a specific embodiment, magnetic piece 61 adopts permanent magnet, the number of arc extinguishing grid piece 62 can be two, arc extinguishing grid piece 62 adopts steel sheet, is a kind of ferromagnetic material, and has high-temperature resistance, first limiting block 115 is arranged in the inside of first installation space 114, magnetic piece 61 is fixed by one end in abutment with first enclosing member 113, and the other end is in abutment with first limiting block 115, any arc extinguishing grid piece 62 is in abutment with first enclosing member 113 and magnetic piece 61 respectively to realize fixation.

[0044] More specifically, as Figure 2As shown, when the connecting direction of the two poles of the magnetic piece 61 is perpendicular to the arc-extinguishing blades 62, the magnetic piece 61 is located in the middle of the two arc-extinguishing blades 62, the magnetic piece 61 includes a south pole (S pole) and a north pole (N pole), and the S pole and the N pole respectively face and abut against different arc-extinguishing blades 62, and in a specific embodiment, the directions of the N pole and the S pole can be reversed; the magnetic field generated by the magnetic piece 61 is perpendicular to the arc-extinguishing blades 62, the perpendicular magnetic field maximally magnetizes the arc-extinguishing blades 62, so that the two arc-extinguishing blades 62 have different polarities, and a magnetic field is formed between the two arc-extinguishing blades 62, no matter whether it is an alternating-current motor relay or a direct-current motor relay, the electric arc will be pulled into the arc-extinguishing blades 62 under the contraction force of the magnetic field magnetic induction line, the electric arc is lengthened and cooled to be extinguished, thereby effectively improving the arc-extinguishing effect of the motor relay.

[0045] Further, as shown in Figure 3 , when the connecting direction of the two poles of the magnetic piece 61 is parallel to the arc-extinguishing blades 62, the magnetic piece 61 is located in the first mounting space 114 away from the moving contact 4321 and the static contact 421, the arc-extinguishing blades 62 are located between the magnetic piece 61 and the moving and static contacts 421, and the arc-extinguishing blades 62 and the magnetic piece 61 form an arc-extinguishing chamber; the N pole and the S pole of the magnetic piece 61 respectively face the first enclosing piece 113 and the arc-extinguishing blades 62, and the directions of the N pole and the S pole can be reversed, the magnetic field direction of the magnetic piece 61 is perpendicular to the electric arc, based on the left-hand rule, the electric arc will be lengthened, at the same time, the arc-extinguishing chamber cools the electric arc to make the electric arc quickly extinguish, thereby effectively improving the arc-extinguishing effect of the motor relay.

[0046] Please refer to Figure 2 , the arc-inducing piece 5 includes a first end 51 and a second end 52, the first end 51 is fixed between the arc blade group 43 and the moving contact 4321, and the second end 52 is bent towards the direction of the arc-extinguishing assembly 6, when the moving contact 4321 abuts or is away from the static contact 421, the second end 52 always abuts the arc-extinguishing assembly 6.

[0047] In specific implementation: the arc-inducing piece 5 includes a first end 51 and a second end 52, the first end 51 is fixed between the arc blade group 43 and the moving contact 4321, and the second end 52 is bent towards the direction of the arc-extinguishing assembly 6, when the moving contact 4321 abuts or is away from the static contact 421, the second end 52 always abuts the arc-extinguishing assembly 6, the arc-inducing piece 5 guides the electric arc to quickly enter the arc-extinguishing assembly 6, improves the speed of arc-extinguishing, and further improves the arc-extinguishing effect.

[0048] Please refer to Figures 4-6 , the shell assembly 1 includes a bottom shell 11 and an upper cover 12, the driving assembly 2 includes an output gear 22, the transmission assembly 3 includes a plurality of transmission gears and corresponding center shafts 34, the bottom shell 11 is provided with a plurality of first fixing holes 112, the upper cover 12 is provided with a plurality of second fixing holes 122, and the two ends of the center shaft 34 are respectively embedded into the first fixing hole 112 and the second fixing hole 122.

[0049] In a specific implementation, the driving assembly 2 includes a driving member 21 and an output gear 22. The conductive wire of the driving member 21 passes through a reserved hole on the bottom shell 11 and is arranged outside the bottom shell 11. The output gear 22 is fixed on the output shaft of the driving member 21. In a specific embodiment, the driving member 21 adopts a direct current motor or an alternating current motor. A second enclosing member 116 is fixed inside the bottom shell 11. The second enclosing member 116 and the bottom shell 11 form a second mounting space 117. The driving assembly 2 is mounted in the second mounting space 117. The second enclosing member 116 can increase the creepage distance between the motor and the moving piece 41, avoid breakdown caused by too close high voltage and low voltage, and improve the safety of the relay operation.

[0050] Please refer to Figures 4-7 The transmission gear includes a primary gear 31, a secondary gear 32, and a sector gear 33. The output gear 22 is in meshing transmission with the primary gear 31. The primary gear 31 is in meshing transmission with the secondary gear 32. The secondary gear 32 is in meshing transmission with the sector gear 33, so as to realize the rotation of the sector gear 33 driven by the driving assembly 2.

[0051] In a specific implementation, the transmission gear includes a primary gear 31, a secondary gear 32, and a sector gear 33. In a specific embodiment, the primary gear 31 and the secondary gear 32 both adopt double gear. Each of them includes an upper large gear and a lower small gear. The output gear 22 is in meshing transmission with the upper large gear of the primary gear 31. The lower small gear of the primary gear 31 is in meshing transmission with the upper large gear of the secondary gear 32. The lower small gear of the secondary gear 32 is in meshing transmission with the sector gear 33. When the output gear 22 on the driving member 21 rotates clockwise, the primary gear 31 rotates counterclockwise. The primary gear 31 drives the secondary gear 32 to rotate clockwise. The secondary gear 32 drives the sector gear 33 to rotate counterclockwise. When the output gear 22 on the driving member 21 rotates counterclockwise, the rotation directions of the gears are opposite. Generally, the rotating speed of the driving member 21 is fast. The rotation of the large gear driven by the small gear can realize deceleration, improve the control accuracy, increase the output torque, and be beneficial to reducing the power loss.

[0052] Please refer to Figures 6-8 The sector gear 33 is fixed with a connecting member 331. The push-pull rod 35 includes a connecting end 351 and a push-pull end 352. The connecting end 351 is provided with a first through hole 3511. The connecting member 331 is embedded in the first through hole 3511, so that the sector gear 33 drives the push-pull rod 35 to move.

[0053] In a specific implementation, the sector gear 33 is fixed with a connecting piece 331, which in a specific embodiment is a column structure fixed below the sector gear 33; the push-pull rod 35 includes a connecting end 351 and a push-pull end 352, the connecting end 351 is provided with a first through hole 3511, the connecting piece 331 is embedded in the first through hole 3511, and the sector gear 33 drives the push-pull rod 35 to move up and down relative to the contact assembly.

[0054] Please refer to Figure 2 , the contact assembly 4 includes a moving piece 41 and a static piece 42, the static piece 42 is fixed with a static contact 421, the bow piece group 43 includes a fixed end 431 and a free end 432, the fixed end 431 is fixed on the moving piece 41, the free end 432 is fixed with a dynamic contact 4321 corresponding to the static contact 421, the push-pull end 352 of the push-pull rod 35 is connected to the free end 432 of the bow piece group 43, and drives the dynamic contact 4321 to abut or move away from the static contact 421; the fixed end 431 and the free end 432 are provided with an elastic deformation part 433, which is used to provide a pre-pressure when the dynamic contact 4321 abuts the static contact 421.

[0055] In specific implementation: the contact assembly 4 includes a moving piece 41 and a static piece 42, both of which are fixed at one end in the shell, wherein the bottom shell 11 is arranged in a reserved limiting space, the moving piece 41 is embedded in the reserved limiting space and is fixedly connected with the bottom shell 11, and the other end of the moving piece 41 and the static piece 42 is located outside the bottom shell 11 through the reserved space of the bottom shell 11; the static piece 42 is fixedly provided with a static contact 421, the arc piece group 43 is formed by stacking a plurality of arc pieces, the arc piece group 43 includes a fixed end 431 and a free end 432, the fixed end 431 is fixed on the moving piece 41, and the free end 432 is fixedly provided with a dynamic contact 4321 corresponding to the static contact 421; the moving piece 41 is provided with a second through hole 411, the pushing and pulling end 352 of the push-pull rod 35 passes through the second through hole 411 and extends to the free end 432 of the arc piece group 43; the push-pull rod 35 is provided with a second limiting block 3521 and a third limiting block 3522, the free end 432 is provided with a groove 4322, and the free end 432 is clamped between the second limiting block 3521 and the third limiting block 3522 through the groove 4322, so as to realize the connection between the free end 432 of the arc piece group 43 and the pushing and pulling end 352 of the push-pull rod 35; the second limiting block 3521 pushes the free end 432 downward, so that the dynamic contact 4321 abuts against the static contact 421; the third limiting block 3522 pulls the free end 432 upward, so that the dynamic contact 4321 is away from the static contact 421; the elastic deformation part 433 is arranged between the fixed end 431 and the free end 432, and is bent towards the static contact 421, so as to tilt the free end 432 towards the static contact 421, provide pre-pressure when the dynamic contact 4321 abuts against the static contact 421, and facilitate the connection between the dynamic contact 4321 and the static contact 421, thereby improving the performance stability of the motor relay.

[0056] The above description is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A high efficiency arc quenching motor relay characterized by, The arc striking device comprises a shell assembly, a driving assembly, a transmission assembly, a contact assembly, an arc striking component and an arc extinguishing assembly. The transmission assembly comprises a push-pull rod, the driving assembly is in transmission connection with the transmission assembly and drives the push-pull rod to move. The contact assembly comprises a moving sheet and a static sheet, the static sheet is fixedly provided with a static contact point, the moving sheet is fixedly provided with a bow piece group, the bow piece group is fixedly provided with a moving contact point corresponding to the static contact point, the push-pull rod is connected with the bow piece group and drives the moving contact point to abut against or move away from the static contact point. The arc striking component comprises a first end and a second end, the first end is fixed between the bow piece group and the moving contact point, and the second end abuts against the arc extinguishing assembly. The arc extinguishing assembly is located at the side of the moving contact point and the static contact point, the arc extinguishing assembly comprises a magnetic component and a plurality of parallel arranged arc extinguishing fins, the magnetic component is connected with the arc extinguishing fins, and the line direction of the two poles of the magnetic component is perpendicular or parallel to the arc extinguishing fins.

2. The high-efficiency arc quenching motor relay according to claim 1, characterized in that, The shell assembly comprises a bottom shell, the bottom shell is internally provided with a first enclosing component, the first enclosing component and the bottom shell form a first mounting space, the arc extinguishing assembly is located in the first mounting space, and any arc extinguishing fin abuts against the first enclosing component and the magnetic component respectively.

3. The high-efficiency arc quenching motor relay according to claim 2, characterized in that, The first mounting space is internally provided with a first limiting block, and the first limiting block is used for limiting the movement of the magnetic component.

4. The high-efficiency arc quenching motor relay of claim 1, wherein, The second end is curved towards the arc extinguishing assembly, and the second end always abuts against the arc extinguishing fin when the moving contact point abuts against or moves away from the static contact point.

5. The high-efficiency arc quenching motor relay according to claim 2, wherein, The bow piece group comprises a fixed end and a free end, the fixed end is fixed on the moving sheet, the free end is fixedly provided with a moving contact point, and an elastically deformed part is arranged between the fixed end and the free end, the elastically deformed part is used for providing a pre-pressure for the moving contact point when the moving contact point abuts against the static contact point.

6. The high-efficiency arc quenching motor relay according to claim 5, wherein, The transmission assembly further comprises a plurality of transmission gears and corresponding central shafts, the transmission gears comprise a primary gear, a secondary gear and a sector gear, the primary gear and the secondary gear are in mesh transmission, and the secondary gear and the sector gear are in mesh transmission; the driving assembly comprises an output gear, the output gear is in mesh transmission with the primary gear and drives the sector gear to reciprocating rotate.

7. The high-efficiency arc quenching motor relay according to claim 6, characterized in that, The sector gear is fixedly provided with a connecting component, the push-pull rod is provided with a first through hole, the connecting component is embedded in the first through hole, and the sector gear drives the push-pull rod to move.

8. The high-efficiency arc quenching motor relay according to claim 7, wherein, The push-pull rod is provided with a second limiting block and a third limiting block, the free end is provided with a groove, the free end is clamped between the second limiting block and the third limiting block through the groove, the second limiting block pushes the free end downward to make the moving contact point abut against the static contact point, and the third limiting block pulls the free end upward to make the moving contact point move away from the static contact point.

9. The high-efficiency arc quenching motor relay of claim 6, wherein, The shell assembly further comprises an upper cover, the upper cover is provided with a clamping hole, the bottom shell is correspondingly provided with a clamping block, the clamping block abuts against the clamping hole to make the bottom shell and the upper cover form a clamping connection.

10. The high-efficiency arc quenching motor relay of claim 9, wherein, The bottom shell is provided with a plurality of first fixing holes, the upper cover is provided with a plurality of second fixing holes, and the two ends of the central shaft are embedded in the first fixing holes and the second fixing holes respectively.

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