CN114334548B - Contact self-cleaning self-locking relay and contact cleaning method thereof - Google Patents
Contact self-cleaning self-locking relay and contact cleaning method thereof Download PDFInfo
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- CN114334548B CN114334548B CN202210228609.9A CN202210228609A CN114334548B CN 114334548 B CN114334548 B CN 114334548B CN 202210228609 A CN202210228609 A CN 202210228609A CN 114334548 B CN114334548 B CN 114334548B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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Abstract
The invention discloses a contact self-cleaning self-locking relay, which comprises a base, an outer cover, an upper end cover, a rotating frame, an electromagnet, two stationary contacts, a one-way transmission mechanism, an energy storage driving mechanism, a clutch type transmission mechanism, a gear ring and two cleaning discs, wherein the outer cover is arranged on the base; a rotary driving track is formed between the upper end cover and the base, a first tension spring is arranged between the rotary frame and the base, a first clamping pin is arranged on the rotary frame, and the first clamping pin is movably embedded into the rotary driving track; the rotating frame is connected with a movable contact in a floating manner and is provided with an iron block; the one-way transmission mechanism is used for transmitting the kinetic energy of the rotating frame to the energy storage driving mechanism; the energy storage driving mechanism is used for storing kinetic energy of the rotating frame and driving the clutch type transmission mechanism to drive the gear ring to rotate; the cleaning disc is in transmission connection with the gear ring; the invention does not need the electromagnet to be continuously electrified, saves electric energy, avoids generating a large amount of heat and has higher reliability; the contact is automatically polished and cleaned at regular intervals, the electrical performance of the contact is guaranteed, and manual follow-up cleaning is not needed.
Description
Technical Field
The invention relates to the technical field of relays, in particular to a contact self-cleaning self-locking relay.
Background
In the on-off process of the relay, an arc discharge phenomenon can be generated between a movable contact and a fixed contact, high temperature is generated around the contacts, and substances such as dust, oil stains and the like attached to the surfaces of the contacts are attached to the surfaces of the contacts after carbonization, so that the electrical performance of the contacts is reduced; however, at present, only when the electrical performance of the contact is reduced to a certain degree, the contact surface is cleaned manually, and the operation is complicated.
Meanwhile, the contact of the relay needs the electromagnet to be continuously electrified in the working process, electric energy is wasted, and the reliability is reduced while a large amount of heat is generated.
Disclosure of Invention
The invention aims to overcome the defects and provide a self-cleaning self-locking relay for a contact.
In order to achieve the purpose, the invention adopts the following specific scheme:
a contact self-cleaning self-locking relay comprises a base and an outer cover, wherein a convex ring table is convexly arranged in the middle of the base, and the opening end of the outer cover is fixed on the base and forms an accommodating space with the base;
the cleaning machine also comprises an upper end cover, a rotating frame, an electromagnet, two stationary contacts, a one-way transmission mechanism, an energy storage driving mechanism, a clutch type transmission mechanism, a gear ring and two cleaning discs which are arranged in the accommodating space;
the upper end cover is fixed on the top of the convex ring platform, a rotary driving track is formed between the upper end cover and the convex ring platform, the rotary driving track comprises a plurality of self-locking sections and a plurality of rotary sections, and the plurality of self-locking sections and the plurality of rotary sections are sequentially connected end to end alternately to form the rotary driving track;
a central rod is convexly arranged in the middle of the rotating frame, movably penetrates through the upper end cover and then extends into the convex ring table, a first tension spring is connected between the central rod and the inner bottom of the convex ring table, two first clamping pins are symmetrically and convexly arranged on the central rod, and the two first clamping pins are respectively correspondingly and movably embedded into the rotary driving track; four movable contacts are uniformly distributed on the rotating frame, the movable contacts are connected to the rotating frame in a floating mode, and two opposite movable contacts are electrically connected; an iron block is arranged in the center of the rotating frame;
the electromagnet is fixedly arranged at the inner top of the outer cover and is positioned right above the iron block; the two static contacts are symmetrically arranged and respectively penetrate through the base; the one-way transmission mechanism is used for transmitting the kinetic energy of the rotating frame to the energy storage driving mechanism; the energy storage driving mechanism is used for storing the kinetic energy of the rotating frame and driving the clutch type transmission mechanism to work by utilizing the stored kinetic energy; the clutch type transmission mechanism is used for driving the gear ring to rotate under the driving of the energy storage driving mechanism; the gear ring is rotatably arranged on the base and is in transmission connection with the clutch type transmission mechanism; the two cleaning discs are in one-to-one correspondence with the two stationary contacts and are rotatably connected to the base, and the two cleaning discs are in transmission connection with the gear ring.
The invention further discloses a one-way transmission mechanism which comprises a first gear, a ratchet wheel, an outer side gear, a spring plate and a pawl, wherein a first tooth structure is uniformly distributed on the outer peripheral wall of the central rod; the first gear is rotationally connected to the base and is in transmission connection with the first tooth structure of the central rod; the ratchet wheel is coaxially and fixedly connected with the first gear and is positioned above the first gear, the outer side gear is coaxially and rotatably connected to a shaft neck of the ratchet wheel, one end of the pawl is connected to the outer side gear in a shaft connection mode, the other end of the pawl is clamped with the ratchet wheel, one end of the elastic piece is fixed to the outer side gear, and the other end of the elastic piece is pressed against the pawl.
The energy storage driving mechanism further comprises a fixed rod, a second gear, a gland and an energy storage spring, wherein one end of the fixed rod is fixedly connected to the base, a one-way driving groove is formed in the outer wall of the fixed rod, the second gear is movably sleeved on the fixed rod and meshed with the outer gear, a second bayonet lock is convexly arranged on the inner wall of the second gear, the second bayonet lock is movably embedded into the one-way driving groove, the gland is fixed at the top end of the fixed rod, the energy storage spring is sleeved on the fixed rod, and two ends of the energy storage spring are respectively abutted to the end faces of the gland and the second gear.
The clutch type transmission mechanism further comprises a third gear, a fourth gear, a heavy bayonet lock and a second tension spring, wherein the third gear is rotatably connected to the base and meshed with the gear ring, an installation groove is concavely formed in the end face of the third gear, a second tooth structure matched with the heavy bayonet lock is arranged on the inner peripheral wall of the installation groove, the fourth gear is rotatably connected to the installation groove and meshed with the second gear, an installation blind hole is formed in the fourth gear in the radial direction, the second tension spring is arranged in the installation blind hole, the heavy bayonet lock is movably arranged in the installation blind hole and close to the opening position of the installation blind hole, the heavy bayonet lock is further connected with one end of the second tension spring, and the other end of the second tension spring is connected to the hole wall of the installation blind hole.
Furthermore, a fifth gear and a sixth gear are rotatably connected to the upper end cover, the fifth gear is meshed with the first tooth structure, one end of the sixth gear is meshed with the fifth gear, and the other end of the sixth gear is meshed with the first gear.
Furthermore, the inner bottom of the convex ring platform is uniformly distributed with a first convex platform with a spiral surface at the top along the circumferential direction, the bottom surface of the upper end cover is uniformly distributed with second bosses and third bosses along the circumferential direction, the second bosses and the third bosses are alternately arranged in sequence, and the two ends of the second boss are respectively connected with the adjacent third bosses in a seamless way, the bottom surfaces of the second boss and the third boss are both helicoids, the spiral direction of the spiral surface of the second boss is opposite to that of the spiral surface of the third boss, the spiral direction of the spiral surface of the second boss is the same as that of the spiral surface of the first boss, the bottom surface of the second boss is lower than that of the third boss, the second boss is positioned right above the first boss, one part of the third boss is positioned right above the space between two adjacent first bosses, and the other part of the third boss is positioned right above the first bosses; the first boss, the second boss and the third boss form a rotary driving track together.
The cleaning disc comprises a disc body and a shaft body which are integrally formed, the disc body is of a semicircular structure, a guide inclined plane is arranged on the side wall of the disc body in the radial direction, friction materials are coated on the upper surface and the lower surface of the disc body, the molded surface of the shaft body is sleeved on one end of a rotating shaft, the other end of the rotating shaft is rotatably connected to a base, the shaft body is connected to the circle center of the disc body, a third tooth structure is arranged on the outer peripheral wall of the shaft body, and the third tooth structure is meshed with a gear ring.
Furthermore, the rotating frame is convexly provided with four connecting lugs distributed in a cross shape, and the four movable contacts are respectively connected on the connecting lugs in a one-to-one corresponding floating mode through buffer springs.
The invention has the beneficial effects that: according to the invention, the tension spring, the rotary driving track and the first bayonet lock of the rotary frame are matched, so that the movable contact driven by the rotary frame can rotate to be jointed with the static contact or staggered with the static contact, and the position of the rotary frame is locked by utilizing the matching of the first bayonet lock and the self-locking section of the rotary driving track, so that the electromagnet is not required to be continuously electrified, the electric energy is saved, a large amount of heat is avoided, and the reliability is higher; meanwhile, the energy storage driving mechanism is used for storing the kinetic energy of the rotating frame and then driving the clutch type transmission mechanism to work, so that the cleaning disc can automatically polish and clean the movable contact and the fixed contact at regular intervals, the electrical performance of the movable contact and the fixed contact is guaranteed, manual follow-up cleaning and extra power are not needed, and the cost is lower.
Drawings
FIG. 1 is an exploded schematic view of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a perspective view of a portion of the structure of the present invention;
FIG. 4 is a schematic cross-sectional view of the one-way transmission of the present invention;
FIG. 5 is a cross-sectional schematic view of the stored energy drive mechanism of the present invention;
FIG. 6 is a schematic cross-sectional view of the clutch transmission of the present invention;
FIG. 7 is a perspective view of the swivel mount of the present invention;
FIG. 8 is a schematic view of the base and upper end cap of the present invention;
FIG. 9 is a perspective view of the base of the present invention;
FIG. 10 is a perspective view of the upper end cap of the present invention;
FIG. 11 is an exploded schematic view of the cleaning disk of the present invention;
description of reference numerals: 1. a base; 11. a cam ring platform; 12. a first boss; 2. a housing; 3. an upper end cover; 31. a second boss; 32. a third boss; 4. a rotating frame; 41. a center pole; 42. a first bayonet lock; 43. a first tooth structure; 5. an electromagnet; 6. a stationary contact; 7. a one-way transmission mechanism; 71. a first gear; 72. a ratchet wheel; 73. an outer gear; 74. a spring plate; 75. a pawl; 8. an energy storage drive mechanism; 81. fixing the rod; 82. a second gear; 83. a gland; 84. an energy storage spring; 85. a unidirectional drive slot; 9. a clutch type transmission mechanism; 91. a third gear; 92. a fourth gear; 93. heavy bayonet lock; 94. a second tension spring; 10. a ring gear; 20. cleaning the disc; 201. a tray body; 202. a shaft body; 203. a rotating shaft; 204. a third tooth structure; 30. a rotary drive rail; 40. a first tension spring; 50. a movable contact; 60. an iron block; 70. a fifth gear; 80. a sixth gear; 90. a buffer spring.
Detailed Description
The invention will be described in further detail with reference to the following figures and specific examples, without limiting the scope of the invention.
As shown in fig. 1 to 11, the contact self-cleaning self-locking relay of the present embodiment includes a base 1 and an outer cover 2, wherein a convex ring platform 11 is convexly disposed at the middle of the base 1, and an opening end of the outer cover 2 is fixed on the base 1 and forms an accommodating space with the base 1;
the cleaning machine also comprises an upper end cover 3, a rotating frame 4, an electromagnet 5, two stationary contacts 6, a one-way transmission mechanism 7, an energy storage driving mechanism 8, a clutch type transmission mechanism 9, a gear ring 10 and two cleaning discs 20 which are arranged in the accommodating space;
the upper end cover 3 is fixed on the top of the convex ring platform 11, a rotary driving track 30 is formed between the upper end cover and the convex ring platform 11, the rotary driving track 30 comprises a plurality of self-locking sections and a plurality of rotary sections, and the plurality of self-locking sections and the plurality of rotary sections are sequentially and alternately connected end to form the rotary driving track 30;
a central rod 41 is convexly arranged in the middle of the rotating frame 4, the central rod 41 movably penetrates through the upper end cover 3 and then extends into the convex ring table 11, a first tension spring 40 is connected between the central rod 41 and the inner bottom of the convex ring table 11, specifically, the first tension spring 40 is fixed on the inner bottom of the convex ring table 11 through a tension spring connector, two first clamping pins 42 are symmetrically and convexly arranged on the central rod 41, and the two first clamping pins 42 are respectively and movably embedded into the rotating driving track 30; four moving contacts 50 are uniformly distributed on the rotating frame 4, the moving contacts 50 are connected on the rotating frame 4 in a floating manner, and two opposite moving contacts 50 are electrically connected; an iron block 60 is arranged in the center of the rotating frame 4;
the electromagnet 5 is fixedly arranged at the inner top of the outer cover 2 and is positioned right above the iron block 60; the two stationary contacts 6 are symmetrically arranged and respectively penetrate through the base 1; the one-way transmission mechanism 7 is used for transmitting the kinetic energy of the rotating frame 4 to the energy storage driving mechanism 8; the energy storage driving mechanism 8 is used for storing the kinetic energy of the rotating frame 4 and driving the clutch type transmission mechanism 9 to work by utilizing the stored kinetic energy; the clutch type transmission mechanism 9 is used for driving the gear ring 10 to rotate under the driving of the energy storage driving mechanism 8; the gear ring 10 is rotatably arranged on the base 1 and is in transmission connection with the clutch type transmission mechanism 9; the two cleaning discs 20 are rotationally connected to the base 1 in a position corresponding to the two stationary contacts 6 one by one, and the two cleaning discs 20 are in transmission connection with the gear ring 10.
The working mode of the embodiment is as follows: initially, the electromagnet 5 is in a power-off state, the rotating frame 4 moves downwards relative to the upper end cover 3 under the action of the tension of the first tension spring 40, the first bayonet pin 42 is positioned at the lowest end of the self-locking section of the rotation driving track 30, and one group of two opposite movable contacts 50 are pressed on the two stationary contacts 6 in a one-to-one correspondence manner to realize the conduction of an external high-voltage circuit;
when an external high-voltage loop needs to be disconnected, the electromagnet 5 is powered on, the electromagnet 5 attracts the rotating frame 4 to move upwards through the iron block 60, so that the first clamping pin 42 is transited into the rotating section of the rotating driving track 30, then the electromagnet 5 is powered off, at the moment, the rotating frame 4 moves downwards under the tension of the first tension spring 40, the first clamping pin 42 slides in the rotating section of the rotating driving track 30, the rotating frame 4 is driven to rotate, until the first clamping pin 42 enters the self-locking section of the rotating driving track 30 from the rotating section of the rotating driving track 30, the position of the movable contact 50 is staggered with that of the stationary contact 6, the external high-voltage circuit is disconnected, at the moment, the first clamping pin 42 is matched with the self-locking section of the rotating driving track 30, the position locking of the rotating frame 4 is realized, and the electromagnet 5 does not need to be continuously powered on;
when an external high-voltage circuit needs to be connected again, the electromagnet 5 is powered on, the attraction iron block 60 drives the rotating frame 4 to move upwards, the first clamping pin 42 enters the rotating section of the rotating driving track 30 from the self-locking section of the rotating driving track 30, then the electromagnet 5 is powered off, the rotating frame 4 rotates under the action of the first tension spring 40 and the matching of the first clamping pin 42 and the rotating section of the rotating driving track 30, and the other two opposite movable contacts 50 are pressed against the two fixed contacts 6 one by one, so that the external high-voltage circuit is connected;
meanwhile, in each rotation process of the rotating frame 4, the one-way transmission mechanism 7 transmits the kinetic energy of the rotating frame 4 to the energy storage driving mechanism 8, the energy storage driving mechanism 8 stores the kinetic energy of the rotating frame 4, when the energy stored by the energy storage driving mechanism 8 reaches the maximum value, the first clamping pin 42 is positioned in the self-locking section of the rotation driving track 30, the two opposite movable contacts 50 are positioned right above the two stationary contacts 6 in a one-to-one correspondence manner, then the energy storage driving mechanism 8 releases the stored energy, the energy released by the energy storage driving mechanism 8 cannot be transmitted to the rotating frame 4 due to the unidirectionality of the one-way transmission mechanism 7, the energy storage driving mechanism 8 drives the clutch type transmission mechanism 9 to work, the clutch type transmission mechanism 9 drives the gear ring 10 to rotate, the gear ring 10 simultaneously drives the two cleaning discs 20 to rapidly rotate, and the two stationary contacts 6 and the two movable contacts 50 corresponding to the upper and lower portions of the stationary contacts 6 are simultaneously polished and cleaned, the electrical performance of the movable contact 50 and the stationary contact 6 is ensured.
In the embodiment, the tension spring, the rotary driving track 30 and the first bayonet lock 42 of the rotary frame 4 are arranged and matched, so that the rotary frame 4 drives the movable contact 50 to rotate to be jointed with the fixed contact 6 or to be staggered with the fixed contact 6, and the position of the rotary frame 4 is locked by utilizing the matching of the first bayonet lock 42 and the self-locking section of the rotary driving track 30, so that the electromagnet 5 is not required to be continuously electrified, the electric energy is saved, a large amount of heat is avoided, and the reliability is higher; meanwhile, the energy storage driving mechanism 8 stores energy for the kinetic energy of the rotating frame 4 and then drives the clutch type transmission mechanism 9 to work, so that the cleaning disc 20 can automatically polish and clean the movable contact 50 and the fixed contact 6 at regular intervals, the electrical performance of the movable contact 50 and the fixed contact 6 is guaranteed, manual follow-up cleaning and extra power are not needed, and the cost is lower.
Based on the above embodiment, as shown in fig. 1 to 4, further, the one-way transmission mechanism 7 includes a first gear 71, a ratchet 72, an outer gear 73, a spring piece 74 and a pawl 75, and the outer peripheral wall of the central rod 41 is uniformly provided with first tooth structures 43; the first gear 71 is rotatably connected to the base 1 and is in transmission connection with the first tooth structure 43 of the central rod 41; the ratchet wheel 72 is coaxially and fixedly connected with the first gear 71 and is positioned above the first gear 71, the outer gear 73 is coaxially and rotatably connected to a shaft neck of the ratchet wheel 72, one end of the pawl 75 is axially connected to the outer gear 73, the other end of the pawl 75 is clamped with the ratchet wheel 72, one end of the elastic piece 74 is fixed on the outer gear 73, and the other end of the elastic piece 74 is pressed against the pawl 75.
In practical use, the first tooth structure 43 of the central rod 41 drives the first gear 71 to rotate clockwise, the first gear 71 drives the ratchet 72 to rotate clockwise, the ratchet 72 drives the outer gear 73 to rotate clockwise through the cooperation of the elastic sheet 74 and the pawl 75, and the outer gear 73 transmits power to the energy storage driving mechanism 8, so that the rotational kinetic energy of the rotating frame 4 is stored; when the energy storage driving mechanism 8 releases energy, the energy storage driving mechanism 8 drives the outer gear 73 to rotate clockwise, at this time, due to the one-way transmissibility of the elastic sheet 74 and the pawl 75, the outer gear 73 cannot drive the ratchet 72 to rotate clockwise through the cooperation of the elastic sheet 74 and the pawl 75, so that the energy storage driving mechanism 8 is prevented from reversely transmitting to the rotating frame 4 through the one-way transmission mechanism 7 when releasing energy, and the influence on the rotation of the rotating frame 4 is avoided.
As shown in fig. 1 to 5, based on the above embodiment, further, the energy storage driving mechanism 8 includes a fixing rod 81, a second gear 82, a pressing cover 83 and an energy storage spring 84, one end of the fixing rod 81 is fixedly connected to the base 1, a unidirectional driving groove 85 is formed in an outer wall of the fixing rod 81, the second gear 82 is movably sleeved on the fixing rod 81 and engaged with the outer gear 73, a second pin is convexly disposed on an inner wall of the second gear 82, the second pin is movably embedded in the unidirectional driving groove 85, the pressing cover 83 is fixed at a top end of the fixing rod 81, the energy storage spring 84 is sleeved on the fixing rod 81, and two ends of the energy storage spring 84 respectively abut against the pressing cover 83 and end faces of the second gear 82.
In practical use, the rotating frame 4 rotates by an angle, the ratchet wheel 72 drives the outer gear 73 to rotate clockwise, the outer gear 73 drives the second gear 82 to rotate anticlockwise relative to the fixing rod 81, at this time, under the matching of the second bayonet lock and the one-way driving groove 85, the second gear 82 synchronously moves upwards by a certain distance relative to the fixing rod 81, so that the energy storage spring 84 is compressed, at this time, the rotating frame 4 is in a locking state under the matching of the first bayonet lock 42 and the self-locking section, namely, the rotating frame 4 cannot rotate at this time, the rotating frame 4 locks the first gear 71 and the ratchet wheel 72 through the first tooth structure 43, so that the second gear 82 cannot rotate clockwise under the action of the energy storage spring 84, and the energy storage spring 84 is kept in an energy storage state; this is due to: if the second gear 82 rotates clockwise under the action of the energy storage spring 84, the second gear 82 drives the outer gear 73 to rotate counterclockwise, the outer gear 73 rotates counterclockwise and drives the ratchet 72 to rotate counterclockwise through the elastic sheet 74 and the pawl 75, and the pawl 75 is in a locked state, so that the outer gear 73 cannot rotate counterclockwise, and the second gear 82 does not rotate clockwise under the action of the energy storage spring 84 after moving up;
after the second gear 82 moves up to the maximum height, the stored energy of the energy storage spring 84 is maximized, the second bayonet lock is located at the highest point of the one-way driving groove 85, then the energy storage spring 84 is released to drive the second gear 82 to rotate counterclockwise, the second gear 82 drives the outer gear 73 to rotate clockwise, the ratchet 72 is kept not to rotate, and meanwhile the energy storage driving mechanism 8 drives the clutch type transmission mechanism 9 to work, so that the clutch type transmission mechanism 9 drives the gear ring 10 to rotate, the two cleaning discs 20 rotate rapidly, and the movable contact 50 and the fixed contact 6 are polished and cleaned.
Based on the above embodiments, as shown in fig. 1 to fig. 6, further, the clutch transmission mechanism 9 includes a third gear 91, a fourth gear 92, a heavy latch 93 and a second tension spring 94, the third gear 91 is rotatably connected to the base 1 and engaged with the gear ring 10, an installation groove is concavely arranged on the end surface of the third gear 91, the inner peripheral wall of the mounting groove is provided with a second tooth structure used for matching with a heavy bayonet 93, the fourth gear 92 is rotationally connected on the mounting groove and meshed with the second gear 82, the fourth gear 92 is provided with a blind mounting hole along the radial direction, the second tension spring 94 is arranged in the blind mounting hole, heavy matter bayonet lock 93 activity is located in the installation blind hole and is close to the open position of installation blind hole, heavy matter bayonet lock 93 still is connected with the one end of second extension spring 94, the other end of second extension spring 94 is connected on the pore wall of installation blind hole.
Specifically, when the energy storage driving mechanism 8 is in the energy storage stage, the second gear 82 drives the fourth gear 92 to rotate clockwise, at this time, due to the low rotation speed of the fourth gear 92, the heavy bayonet lock 93 is held in the mounting blind hole under the pulling force of the second tension spring 94, i.e., heavy bayonet pin 93 does not engage the second tooth structure, so that third gear 91 does not rotate, when the energy storage driving mechanism 8 releases energy, the second gear 82 drives the fourth gear 92 to rotate clockwise rapidly and continuously, so that the heavy bayonet 93 is extended to be engaged with the second tooth structure under the action of centrifugal force against the action of the second tension spring 94, the power is transmitted to the third gear 91, so that the fourth gear 92 drives the third gear 91 to rotate rapidly, the third gear 91 drives the gear ring 10 to rotate, thereby driving the two cleaning discs 20 to rotate and polishing and cleaning the fixed contact 6 and the movable contact 50.
As shown in fig. 1 and 3, based on the above embodiment, a fifth gear 70 and a sixth gear 80 are further rotatably connected to the upper cover 3, the fifth gear 70 is engaged with the first tooth structure 43, one end of the sixth gear 80 is engaged with the fifth gear 70, and the other end of the sixth gear 80 is engaged with the first gear 71.
During practical use, the first tooth structure 43 of the central rod 41 drives the fifth gear 70 to rotate, the fifth gear 70 drives the sixth gear 80 to rotate, and the sixth gear 80 drives the first gear 71 to rotate, so that the rotating power of the rotating frame 4 is transmitted to the one-way transmission mechanism 7, and the kinetic energy of the rotating frame 4 is stored in the energy storage driving mechanism 8 through the one-way transmission mechanism 7.
As shown in fig. 1 to 3 and 8 to 10, based on the above embodiment, further, a first boss 12 having a spiral top is uniformly distributed on an inner bottom of the boss 11 along a circumferential direction, a second boss 31 and a third boss 32 are uniformly distributed on a bottom surface of the upper end cap 3 along the circumferential direction, the second boss 31 and the third boss 32 are alternately arranged in sequence, two ends of the second boss 31 are respectively connected with the adjacent third boss 32 without a seam, bottom surfaces of the second boss 31 and the third boss 32 are both spiral surfaces, a spiral direction of the spiral surface of the second boss 31 is opposite to a spiral direction of the spiral surface of the third boss 32, a spiral direction of the spiral surface of the second boss 31 is the same as a spiral direction of the spiral surface of the first boss 12, a bottom surface of the second boss 31 is lower than a bottom surface of the third boss 32, the second boss 31 is located right above the first boss 12, a part of the third boss 32 is positioned right above the space between two adjacent first bosses 12, and the other part of the third boss 32 is positioned right above the first bosses 12; the first boss 12, the second boss 31 and the third boss 32 together form a rotary driving track 30.
Specifically, a self-locking section of the rotation driving track 30 is formed between two adjacent first bosses 12 and between corresponding second bosses 31, and a rotation section of the rotation driving track 30 is formed between the first bosses 12 and corresponding second bosses 31 and third bosses 32; so when electro-magnet 5 circular telegram, first bayonet lock 42 moves up to the helicoid contact with third boss 32, and with the helicoid cooperation of third boss 32, make swivel mount 4 rotate an angle, make first bayonet lock 42 get into rotatory section, then when electro-magnet 5 outage, under the effect of first extension spring 40, first bayonet lock 42 moves down to the helicoid contact with first boss 12, and under the drive of the helicoid of first boss 12 and the helicoid of second boss 31, drive swivel mount 4 and rotate an angle, until first bayonet lock 42 gets into the position between two adjacent first bosses 12, get into the self-locking section promptly, so realize that swivel mount 4 rotates an angle when rotatory section, be in the locking state when the self-locking section.
Based on the above embodiment, as shown in fig. 1 to fig. 3 and fig. 11, further, the cleaning plate 20 includes a plate body 201 and a shaft body 202 that are integrally formed, the plate body 201 is a semicircular structure, a guide inclined plane is provided on a side wall of the plate body 201 in a radial direction, upper and lower surfaces of the plate body 201 are both coated with a friction material, the shaft body 202 is profile-sleeved on one end of a rotating shaft 203, the other end of the rotating shaft 203 is rotatably connected to the base 1, the shaft body 202 is connected to a center position of the plate body 201, a third tooth structure 204 is provided on an outer peripheral wall of the shaft body 202, and the third tooth structure 204 is engaged with the ring gear 10.
Specifically, when the energy storage driving mechanism 8 is released, the gear ring 10 drives the shaft body 202 to rotate through the third tooth structure 204, the shaft body 202 drives the disc body 201 to rotate, when the guide inclined plane of the disc body 201 is contacted with the movable contact 50 and the stationary contact 6, the disc body 201 relatively rotates the rotating shaft 203 to move upwards until the upper surface and the lower surface of the disc body 201 are respectively contacted with the movable contact 50 and the stationary contact 6 correspondingly, so that the movable contact 50 and the stationary contact 6 are polished and cleaned, carbonized substances attached to the surfaces of the contacts are removed, and the electrical performance of the contacts is ensured.
Based on the above embodiments, as shown in fig. 1 to fig. 3 and fig. 7, four connecting lugs distributed in a cross shape are further protruded from the rotating frame 4, and the four moving contacts 50 are respectively connected to the connecting lugs in a one-to-one floating manner through buffer springs 90. The movable contact 50 is floatingly connected to the rotary frame 4 by the buffer spring 90, so that the movable contact 50 is buffered when contacting with the fixed contact 6, and the disc body 201 of the cleaning disc 20 can enter between the movable contact 50 and the fixed contact 6 for polishing and cleaning.
The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present patent application are included in the protection scope of the present patent application.
Claims (9)
1. A contact self-cleaning self-locking relay is characterized by comprising a base (1) and an outer cover (2), wherein a convex ring platform (11) is convexly arranged in the middle of the base (1), the open end of the outer cover (2) is fixed on the base (1), and an accommodating space is formed between the open end of the outer cover and the base (1);
the cleaning machine also comprises an upper end cover (3), a rotating frame (4), an electromagnet (5), two stationary contacts (6), a one-way transmission mechanism (7), an energy storage driving mechanism (8), a clutch type transmission mechanism (9), a gear ring (10) and two cleaning discs (20) which are arranged in the accommodating space;
the upper end cover (3) is fixed to the top of the convex ring table (11), a rotary driving track (30) is formed between the upper end cover and the convex ring table (11), the rotary driving track (30) comprises a plurality of self-locking sections and a plurality of rotary sections, and the self-locking sections and the rotary sections are sequentially and alternately connected end to form the rotary driving track (30);
a central rod (41) is convexly arranged in the middle of the rotating frame (4), the central rod (41) movably penetrates through the upper end cover (3) and then extends into the convex ring table (11), a first tension spring (40) is connected between the central rod (41) and the inner bottom of the convex ring table (11), two first clamping pins (42) are symmetrically and convexly arranged on the central rod (41), and the two first clamping pins (42) are respectively and movably embedded into the rotary driving track (30) correspondingly; four movable contacts (50) are uniformly distributed on the rotating frame (4), the movable contacts (50) are connected to the rotating frame (4) in a floating mode, and the two opposite movable contacts (50) are electrically connected; an iron block (60) is arranged in the center of the rotating frame (4);
the electromagnet (5) is fixedly arranged at the inner top of the outer cover (2) and is positioned right above the iron block (60); the two static contacts (6) are symmetrically arranged and respectively penetrate through the base (1); the one-way transmission mechanism (7) is used for transmitting the kinetic energy of the rotating frame (4) to the energy storage driving mechanism (8); the energy storage driving mechanism (8) is used for storing the kinetic energy of the rotating frame (4) and driving the clutch type transmission mechanism (9) to work by utilizing the stored kinetic energy; the clutch type transmission mechanism (9) is used for driving the gear ring (10) to rotate under the driving of the energy storage driving mechanism (8); the gear ring (10) is rotatably arranged on the base (1) and is in transmission connection with the clutch type transmission mechanism (9); the two cleaning discs (20) are in one-to-one correspondence with the two stationary contacts (6) and are rotatably connected to the base (1), and the two cleaning discs (20) are in transmission connection with the gear ring (10).
2. The contact self-cleaning self-locking relay as claimed in claim 1, wherein the one-way transmission mechanism (7) comprises a first gear (71), a ratchet wheel (72), an outer gear (73), a spring plate (74) and a pawl (75), and the outer peripheral wall of the central rod (41) is uniformly provided with a first tooth structure (43); the first gear (71) is rotatably connected to the base (1) and is in transmission connection with the first tooth structure (43) of the central rod (41); the ratchet wheel (72) is coaxially and fixedly connected with the first gear (71) and is positioned above the first gear (71), the outer side gear (73) is coaxially and rotatably connected to a shaft neck of the ratchet wheel (72), one end of the pawl (75) is connected to the outer side gear (73) in a shaft coupling mode, the other end of the pawl (75) is clamped with the ratchet wheel (72), one end of the elastic sheet (74) is fixed to the outer side gear (73), and the other end of the elastic sheet (74) is pressed against the pawl (75).
3. A contact self-cleaning self-locking relay according to claim 2, the energy storage driving mechanism (8) comprises a fixing rod (81), a second gear (82), a gland (83) and an energy storage spring (84), one end of the fixed rod (81) is fixedly connected to the base (1), the outer wall of the fixed rod (81) is provided with a one-way driving groove (85), the second gear (82) is movably sleeved on the fixed rod (81) and meshed with the outer side gear (73), a second bayonet lock is convexly arranged on the inner wall of the second gear (82), the second bayonet lock is movably embedded into the one-way driving groove (85), the gland (83) is fixed at the top end of the fixing rod (81), the energy storage spring (84) is sleeved on the fixing rod (81), two ends of the energy storage spring (84) are respectively abutted against the end faces of the gland (83) and the second gear (82).
4. The contact self-cleaning self-locking relay as claimed in claim 3, wherein the clutch type transmission mechanism (9) comprises a third gear (91), a fourth gear (92), a heavy bayonet (93) and a second tension spring (94), the third gear (91) is rotatably connected to the base (1) and engaged with the gear ring (10), an installation groove is concavely arranged on the end face of the third gear (91), a second tooth structure for being matched with the heavy bayonet (93) is arranged on the inner peripheral wall of the installation groove, the fourth gear (92) is rotatably connected to the installation groove and engaged with the second gear (82), the fourth gear (92) is provided with a blind installation hole along the radial direction, the second tension spring (94) is arranged in the blind installation hole, the heavy bayonet (93) is movably arranged in the blind installation hole and close to the open position of the blind installation hole, the heavy bayonet lock (93) is further connected with one end of a second tension spring (94), and the other end of the second tension spring (94) is connected to the hole wall of the mounting blind hole.
5. The self-cleaning self-locking relay of contact according to claim 2, wherein a fifth gear (70) and a sixth gear (80) are rotatably connected to the upper end cover (3), the fifth gear (70) is engaged with the first tooth structure (43), one end of the sixth gear (80) is engaged with the fifth gear (70), and the other end of the sixth gear (80) is engaged with the first gear (71).
6. The contact self-cleaning self-locking relay according to claim 1, wherein the inner bottom of the collar (11) is circumferentially and uniformly distributed with a first boss (12) having a spiral top, the bottom of the upper cover (3) is circumferentially and uniformly distributed with a second boss (31) and a third boss (32), the second boss (31) and the third boss (32) are sequentially and alternately arranged, and two ends of the second boss (31) are respectively connected with the adjacent third boss (32) in a seamless manner, the bottom of the second boss (31) and the bottom of the third boss (32) are both spiral surfaces, the spiral direction of the spiral surface of the second boss (31) is opposite to that of the spiral surface of the third boss (32), the spiral direction of the spiral surface of the second boss (31) is the same as that of the spiral surface of the first boss (12), and the bottom of the second boss (31) is lower than that of the third boss (32), the second boss (31) is positioned right above the first bosses (12), one part of the third boss (32) is positioned right above the space between two adjacent first bosses (12), and the other part of the third boss (32) is positioned right above the first bosses (12); the first boss (12), the second boss (31) and the third boss (32) jointly form a rotary driving track (30).
7. The contact self-cleaning self-locking relay as claimed in claim 1, wherein the cleaning plate (20) comprises a plate body (201) and a shaft body (202) which are integrally formed, the plate body (201) is of a semicircular structure, the side wall of the plate body (201) in the radial direction is provided with a guide inclined surface, the upper surface and the lower surface of the plate body (201) are coated with friction materials, the molded surface of the shaft body (202) is sleeved on one end of a rotating shaft (203), the other end of the rotating shaft (203) is rotatably connected to the base (1), the shaft body (202) is connected to the center of the circle of the plate body (201), the peripheral wall of the shaft body (202) is provided with a third tooth structure (204), and the third tooth structure (204) is meshed with the gear ring (10).
8. The self-cleaning self-locking relay of contact according to claim 1, wherein said rotary frame (4) is protruded with four engaging lugs distributed in a cross shape, and four of said movable contacts (50) are floatingly connected to the engaging lugs in a one-to-one correspondence by means of buffer springs (90).
9. A contact cleaning method of a contact self-cleaning self-locking relay according to any of claims 1 to 8, characterized by comprising the steps of:
s100: the electromagnet (5) is electrified, the electromagnet (5) attracts the rotating frame (4) to move upwards through the iron block (60), so that the first clamping pin (42) is transited into the rotating section of the rotating driving track (30), then the electromagnet (5) is powered off, the rotating frame (4) moves downwards under the tension of the first tension spring (40), and under the matching of the first clamping pin (42) and the rotating section of the rotating driving track (30), the rotating frame (4) rotates until the first clamping pin (42) enters the self-locking section of the rotating driving track (30) from the rotating section of the rotating driving track (30);
meanwhile, in the rotating process of the rotating frame (4), the kinetic energy of the rotating frame (4) is transmitted to the energy storage driving mechanism (8) by the one-way transmission mechanism (7), and the kinetic energy of the rotating frame (4) is stored by the energy storage driving mechanism (8);
s200: when the energy stored by the energy storage driving mechanism (8) reaches the maximum value, the first clamping pin (42) is positioned in the self-locking section of the rotary driving track (30), wherein two opposite movable contacts (50) are positioned right above the two fixed contacts (6) in a one-to-one correspondence manner;
then the energy storage driving mechanism (8) releases the stored energy, the energy storage driving mechanism (8) drives the clutch type transmission mechanism (9) to work, the clutch type transmission mechanism (9) drives the gear ring (10) to rotate, the gear ring (10) simultaneously drives the two cleaning discs (20) to rapidly rotate, and the two stationary contacts (6) and the two movable contacts (50) which vertically correspond to the stationary contacts (6) are simultaneously polished and cleaned.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210228609.9A CN114334548B (en) | 2022-03-10 | 2022-03-10 | Contact self-cleaning self-locking relay and contact cleaning method thereof |
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| CN202210228609.9A CN114334548B (en) | 2022-03-10 | 2022-03-10 | Contact self-cleaning self-locking relay and contact cleaning method thereof |
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| CN114334548B true CN114334548B (en) | 2022-05-20 |
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| CN113035645A (en) * | 2021-04-19 | 2021-06-25 | 宁波奥克斯电气股份有限公司 | Anti-adhesion contactor, control method thereof and air conditioner |
| CN113394058A (en) * | 2020-12-02 | 2021-09-14 | 盐城工业职业技术学院 | Self-cleaning relay |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004241140A (en) * | 2003-02-03 | 2004-08-26 | Alps Electric Co Ltd | Switching device |
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|---|---|---|---|---|
| US3795101A (en) * | 1971-12-08 | 1974-03-05 | Bunker Ramo | Electrical contact arrangement with self cleaning contact points |
| CN2297796Y (en) * | 1997-03-27 | 1998-11-18 | 赵克 | Self-locked electromagnetic switch |
| JP2007257997A (en) * | 2006-03-23 | 2007-10-04 | Tokai Rika Co Ltd | Switch device |
| CN104275331A (en) * | 2013-07-08 | 2015-01-14 | Ls产电株式会社 | Cleaning device for contamination of contact of electromagnetic contactor |
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|---|---|
| CN114334548A (en) | 2022-04-12 |
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