CN210692445U - Electromagnetic relay capable of reducing contact breaking jitter - Google Patents
Electromagnetic relay capable of reducing contact breaking jitter Download PDFInfo
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- CN210692445U CN210692445U CN201921620359.3U CN201921620359U CN210692445U CN 210692445 U CN210692445 U CN 210692445U CN 201921620359 U CN201921620359 U CN 201921620359U CN 210692445 U CN210692445 U CN 210692445U
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Abstract
The utility model discloses an electromagnetic relay capable of reducing the shaking of contact disconnection, which comprises a movable spring part, a static spring part and a pushing card; the static spring part comprises a static spring sheet and a static contact; the movable spring part comprises a flexible movable spring piece, a movable contact and a rigid movable spring leading-out piece, one end of the movable spring piece is fixed with one end of the movable spring leading-out piece and connected into a V shape, the end head of the other end of the movable spring piece is connected with the pushing clamp, the movable contact is fixed on the surface, back to the movable spring leading-out piece, in the end head of the other end of the movable spring piece, and the movable contact is correspondingly matched with the static contact; and a first elastic sheet is arranged between the movable spring sheet and the movable spring leading-out sheet. The utility model discloses a shake phenomenon when the contact disconnection of movable spring leaf that this kind of structure can reduce movable spring part avoids prior art because of the drawback that the shake of movable contact brought.
Description
Technical Field
The utility model relates to a relay technical field especially relates to an electromagnetic relay that can reduce contact disconnection shake.
Background
An electromagnetic relay in the prior art is composed of a magnetic circuit system, a contact system, a push portion and a base. The magnetic circuit system generally consists of two basically symmetrical magnetic circuits, including a static magnetic conductor component, a movable magnetic conductor component and a coil, the contact system includes a movable spring part and a static spring part, and the pushing part is generally acted by a pushing card. The coil of the relay is energized with forward pulse voltage, the magnetic circuit system works to push the card to push the movable reed in the movable reed part to make the movable contact and the static contact, the relay acts, the coil is energized with reverse pulse voltage, the magnetic circuit system works to push the card to push the movable reed in the movable reed part to make the movable contact and the static contact disconnected, and the relay returns. The structure of the electromagnetic relay is shown in fig. 1, and fig. 1 is a partial structural schematic diagram of the electromagnetic relay; the movable spring part 100 comprises a flexible movable spring piece 101, a movable contact 102 and a rigid movable spring leading-out piece 103, one end of the movable spring piece 101 is fixed with one end of the movable spring leading-out piece 103 (for example, fixed by rivets or a convex-hull riveting manner of the movable spring leading-out piece) and connected into a roughly V-shaped shape, the end head of the other end of the movable spring piece 101 is connected with one end of the pushing card 200, the movable contact 102 is fixed on one surface, facing away from the movable spring leading-out piece, in the end head of the other end of the movable spring piece 101, the end head of the other end of the movable spring leading-out piece 103 is led out of the relay, the end head of the other end of the movable spring leading-out piece 103 is fixed on the base, the static spring part comprises a rigid static spring piece 300 and a static contact 301, and the static contact 301 is fixed; the armature part 400 (i.e. the movable magnetic conductor part) of the magnetic circuit system is provided with a rotating shaft 401, the tail end of a push arm 402 which can rotate around the rotating shaft 401 in the armature part 400 is connected with the other end of the push card 200, when the armature part 400 of the magnetic circuit system rotates around the rotating shaft 401, the push card 200 is driven to move, and the push card 200 pushes and pulls the head part (i.e. the end head of the other end) of the movable spring 101 to swing left and right, so that the contact is closed or opened (i.e. the movable contact 102 is contacted with or separated from the fixed contact 301); in the structure of the movable spring part, the movable spring piece 101 has great kinetic energy in the process of opening the contact, and part of the kinetic energy is converted into the elastic potential energy of the movable spring piece 101 and the vibration energy of the movable spring piece 101; the shaking of the movable spring 101 will shake the movable contact 102 together to make the contact gap large and small, which affects the ability of the contact to break the arc, especially when breaking the alternating current inductive load, the shaking of the movable contact will affect the insulation between the contacts large and small, which is easy to cause the secondary or multiple reignition of the alternating current arc.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide an electromagnetic relay that can reduce contact disconnection shake, through the institutional advancement to the movable spring part, can reduce the shake phenomenon of the movable spring leaf of movable spring part when the contact disconnection, avoid prior art because of the drawback that the shake of movable contact brought.
The utility model provides a technical scheme that its technical problem adopted is: an electromagnetic relay capable of reducing contact opening jitter comprises a movable spring part, a static spring part and a pushing card; the static spring part comprises a rigid static spring piece and a static contact fixed on the static spring piece; the movable spring part comprises a flexible movable spring piece, a movable contact and a rigid movable spring leading-out piece, one end of the movable spring piece is fixed with one end of the movable spring leading-out piece and connected into a V shape, the end head of the other end of the movable spring piece is connected with the pushing clamp, the movable contact is fixed on the surface, back to the movable spring leading-out piece, in the end head of the other end of the movable spring piece, and the movable contact is correspondingly matched with the static contact; the method is characterized in that: and a first elastic sheet is also arranged between the movable spring piece and the movable spring leading-out sheet, one end of the first elastic sheet is fixed on the movable spring piece or the movable spring leading-out sheet, the other end of the first elastic sheet obliquely extends towards the movable spring leading-out sheet or the movable spring piece, and the contact position of the other end of the first elastic sheet is in an area from the joint of the movable spring piece and the movable contact to the joint of the movable spring piece and the movable spring leading-out sheet, when the movable contact and the static contact are disconnected, the first elastic sheet is elastically abutted to the movable spring leading-out sheet or the movable spring piece, so that the shaking phenomenon when the contact is disconnected is reduced.
When the movable contact and the static contact are not disconnected, a preset gap is formed between the other end of the first elastic piece and the movable spring leading-out piece or the movable spring piece.
In the movable spring piece, a first bending part used for enhancing the flexibility of the movable spring piece is further arranged at a position close to the connection position of the movable spring piece and the movable spring leading-out piece, and the contact position of the other end of the first elastic piece is located in a region from the first bending part corresponding to the movable spring piece to the connection position of the movable spring piece and the movable contact.
The first elastic piece is an independent part, one end of the first elastic piece is fixed on one surface of the movable spring piece facing the movable spring leading-out piece, and the other end of the first elastic piece extends out obliquely towards the movable spring leading-out piece.
The inclined extending direction of the first elastic sheet is towards the connecting position of the movable spring sheet and the movable spring leading-out sheet.
The oblique extending direction of the first elastic sheet is towards the end head direction of the other end of the movable spring leading-out sheet.
The other end of the first elastic piece is also provided with a second bending part, and when the movable contact and the static contact are disconnected, the second bending part of the first elastic piece is contacted with the movable spring leading-out piece.
The first elastic sheet is an independent part, one end of the first elastic sheet is fixed on one surface of the movable spring leading-out sheet facing the movable spring piece, and the other end of the first elastic sheet extends obliquely towards the direction of the movable spring piece.
The inclined extending direction of the first elastic sheet is towards the connecting position of the movable spring sheet and the movable spring leading-out sheet.
The oblique extending direction of the first elastic sheet is towards the end head direction of the other end of the movable spring sheet.
The other end of the first elastic piece is also provided with a second bending part, and when the movable contact and the static contact are disconnected, the second bending part of the first elastic piece is contacted with the movable spring.
The movable spring plate is formed by overlapping three spring plates, and the first elastic plate is fixed on the three spring plates; and in one of the three reeds which is far away from the movable spring leading-out piece, two sides corresponding to the installation position of the movable contact are respectively provided with a hem.
The first elastic sheet and the movable spring sheet are of an integrated structure, and the first elastic sheet is formed by cutting a body of the movable spring sheet into a sheet body capable of swinging freely and bending the sheet body to extend obliquely towards the direction of the movable spring leading-out sheet.
The movable spring plate is formed by overlapping three spring plates, and the first elastic plate is formed by cutting a body of one of the three spring plates, which is closer to the movable spring leading-out plate, into a freely-swinging plate body and bending the body to extend out obliquely towards the movable spring leading-out plate; and in one of the three reeds which is far away from the movable spring leading-out piece, two sides corresponding to the installation position of the movable contact are respectively provided with a folded edge.
Furthermore, in one surface of the movable spring piece facing the movable spring lead-out piece, a second elastic piece extending towards the end of the other end of the movable spring lead-out piece in an inclined manner is further arranged in a position from the end of the other end of the movable spring piece to a joint of the movable spring piece and the movable spring lead-out piece, the second elastic piece is closer to the end of the other end of the movable spring lead-out piece relative to the first elastic piece, a convex bud is arranged in one surface of the movable spring lead-out piece facing the movable spring piece, when the movable contact and the static contact are disconnected, a preset gap is formed between the tail end of the second elastic piece and the convex bud of the movable spring lead-out piece, and when the movable contact and the static contact are disconnected, the second elastic piece elastically abuts against the convex bud of the movable lead-out piece.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses owing to adopted and drawn forth still to be equipped with first flexure strip between the piece at movable contact spring and movable spring, the one end of this first flexure strip is fixed on movable contact spring or movable spring draws forth the piece, the other end of this first flexure strip draws forth piece or movable contact spring direction slant to the movable spring and stretches out, and make the contact position department of the other end of first flexure strip in the junction that corresponds to movable contact spring and movable contact draw forth the region between the junction of piece to movable contact spring and movable spring, move, when the section is divided at the stationary contact end, the other end of this first flexure strip and movable spring draw forth piece or movable contact spring between have a clearance of presetting, move, when the stationary contact divides, this first flexure strip elasticity supports to the movable spring and draws forth piece or movable contact spring. The utility model discloses a this kind of structure is that the biggest department of the shake range of movable contact spring (the shake range in the middle of the movable contact spring is the biggest usually) sets up first flexure strip (being equivalent to the pressure spring), in contact disconnection process, first flexure strip can draw forth piece or movable contact spring contact with the movable contact spring, the movable contact spring is drawn forth the piece and can be applyed a power for the movable contact spring, first flexure strip produces elastic deformation simultaneously, convert some kinetic energy into elastic potential energy, make the movable contact spring part slow down, thereby reach the shock attenuation, the effect that the rebound weakens.
2. When the movable contact and the static contact are not disconnected, a preset gap is formed between the other end of the first elastic piece and the movable spring leading-out piece or the movable spring piece, so that the anti-adhesion capability of the contact is prevented from being influenced by the counter force of the first elastic piece before the contact is not disconnected.
3. The utility model discloses owing to adopted still to be equipped with the first kink that is used for strengthening the movable contact spring flexibility near the department of being connected that movable contact spring and movable spring drawn forth the piece, the contact position of the other end of first flexure strip is in the region between the junction corresponding to the first kink of movable contact spring to movable contact spring and movable contact. The utility model discloses an in-process that this kind of structure was pulled open at the movable contact spring, draws forth the piece contact with the movable spring behind the contact disconnection to the junction that the fulcrum driven reed that the movable contact spring pulled open and the movable spring drawn forth the piece shifts to the contact or the department of meeting of first flexure strip and movable spring drawing piece, and the length that becomes looks movable contact spring shortens, pulls open the counter-force grow of movable contact spring, and the kinetic energy of movable spring part converts elastic potential energy to, thereby slows down, the rebound weakens.
4. The utility model discloses owing to adopted in the one side of drawing forth the piece at the orientation movable spring of movable contact spring, in the end of the other end of movable contact spring to movable contact spring and the position between the junction that the piece was drawn forth to the movable spring, still be equipped with the second flexure strip that stretches out to the end direction slant of the other end of movable spring drawing forth the piece, and the second flexure strip is closer for first flexure strip move the end that the piece was drawn forth to the spring, move the orientation that the piece was drawn forth to the spring be equipped with protruding bud in the one side of movable contact spring, when moving, stationary contact divide the branch, this second flexure strip elasticity supports the protruding bud that the piece was drawn forth to the movable spring. The utility model discloses a this kind of structure, through increasing the second flexure strip, further strengthen the shock attenuation, the effect that the rebound weakens.
5. The utility model discloses owing to adopted in the one side of drawing forth the piece at the orientation movable spring of movable contact spring, be equipped with first flexure strip or still including being equipped with the second flexure strip, at the closed in-process of contact, because first flexure strip draws forth the piece contact with movable spring or still includes the second flexure strip and draws forth the protruding bract contact of piece with movable spring and have the pre-pressure, the elastic potential energy of production progressively releases, its effort is the same with the coil appeal direction of magnetic circuit part, can accelerate the contact closure, drive consumption when reducing the contact closure.
The present invention will be described in further detail with reference to the accompanying drawings and examples; however, the present invention is not limited to the embodiment, and an electromagnetic relay capable of reducing contact opening jitter is provided.
Drawings
Fig. 1 is a partial structural schematic diagram of a prior art electromagnetic relay;
fig. 2 is a partial schematic structural diagram (contact closed) of the first embodiment of the present invention;
FIG. 3 is an enlarged schematic view of section A of FIG. 2;
fig. 4 is a partial schematic structural diagram (contact open) of the first embodiment of the present invention;
fig. 5 is a partial structural schematic view of a movable spring portion according to a first embodiment of the present invention;
fig. 6 is a schematic structural view of one of the three reeds of the movable spring according to the first embodiment of the present invention, which is closer to the movable spring lead-out piece;
fig. 7 is a schematic structural view of one of the three reeds of the movable spring according to the first embodiment of the present invention, which is further away from the movable spring lead-out piece;
fig. 8 is a schematic structural view of one of the three reeds of the movable spring according to the second embodiment of the present invention, which is closer to the movable spring lead-out piece;
fig. 9 is a schematic structural view of one of the three reeds of the movable spring according to the third embodiment of the present invention, which is further away from the movable spring lead-out piece;
fig. 10 is a partial schematic structural view (contact open) of a fourth embodiment of the present invention;
fig. 11 is a partial structural schematic diagram (contact open) of a fifth embodiment of the present invention;
fig. 12 is a partial structural schematic diagram (contact closed) of a sixth embodiment of the present invention;
fig. 13 is a partial structural schematic diagram (contact open) of a sixth embodiment of the present invention;
fig. 14 is a partial schematic structural view of a movable spring portion according to a sixth embodiment of the present invention;
fig. 15 is an exploded schematic view of a partial structure of a movable spring portion according to a sixth embodiment of the present invention;
fig. 16 is a schematic structural view of the first and second elastic pieces of the dynamic spring part according to the sixth embodiment of the present invention;
fig. 17 is a schematic structural view (rotated by an angle) of the first and second elastic pieces of the dynamic spring part according to the sixth embodiment of the present invention;
fig. 18 is a partial structural schematic view (contact closed) of a seventh embodiment of the present invention;
FIG. 19 is an enlarged schematic view of section B of FIG. 18;
fig. 20 is a partial schematic structural view (contact closed) of an eighth embodiment of the present invention;
fig. 21 is a partial schematic structural view (contact closed) of embodiment nine of the present invention;
FIG. 22 is an enlarged schematic view of section C of FIG. 21;
fig. 23 is a partial schematic structural diagram (contact closed) of embodiment ten of the present invention.
Detailed Description
Example one
Referring to fig. 2 to 7, an electromagnetic relay capable of reducing contact breaking jitter according to the present invention includes a magnetic circuit system, a contact system, a pushing portion and a base, wherein the pushing portion employs a pushing card 1, the magnetic circuit system includes an armature portion 2, and the armature portion 2 is provided with a rotating shaft 21 and a pushing arm 22 capable of rotating around the rotating shaft 21; the movable spring part comprises a flexible movable spring piece 31, a movable contact 32 and a rigid movable spring lead-out piece 33, and the static spring part comprises a rigid static spring piece 41 and a static contact 42 fixed on the static spring piece; one end of the movable spring piece 31 is fixed with one end of the movable spring leading-out piece 33 and connected into a V shape, the end head of the other end of the movable spring piece 31 is connected with one end of the pushing card 1, one surface of the end head of the other end of the movable spring piece 31, which faces away from the movable spring leading-out piece, is fixed with the movable contact 32, and the movable contact 32 is correspondingly matched with the fixed contact 42; the end head of the other end of the movable spring leading-out piece 33 is led out of the base, and one position in the end head of the other end of the movable spring leading-out piece 33 is fixed on the base; the other end of the push card 1 is connected with the tail end of the push arm 22 of the armature part 2, when the armature part 2 of the magnetic circuit system rotates around the rotating shaft 21, the push card 1 is driven to move, and the push card 1 pushes and pulls the head part (namely the end head at the other end) of the movable spring piece 31 to swing left and right, so that the contact is closed or opened (namely the movable contact 32 is contacted with or separated from the fixed contact 42); a first elastic sheet 51 is further arranged between the movable spring piece 31 and the movable spring leading-out piece 33, one end of the first elastic sheet 51 is fixed on the movable spring piece 31, the other end of the first elastic sheet 51 extends obliquely towards the movable spring leading-out piece 33, the contact position of the other end of the first elastic sheet 51 is in the area from the joint of the movable spring piece 31 and the movable contact 32 to the joint of the movable spring piece 31 and the movable spring leading-out piece 33, a preset gap M is formed between the other end of the first elastic sheet 51 and the movable spring leading-out piece 33 when the movable contact and the static contact are not separated, and the first elastic sheet 51 elastically abuts against the movable spring leading-out piece 33 when the movable contact and the static contact are separated, so that the shaking phenomenon when the contacts are separated is reduced.
In the present embodiment, the movable spring piece 31 is further provided with a first bent portion 34 for enhancing flexibility of the movable spring piece near a connection portion between the movable spring piece 31 and the movable spring lead-out piece 33, and the first elastic piece 51 is provided in a region from the first bent portion 34 of the movable spring piece to the connection portion between the movable spring piece 31 and the movable contact 32.
In this embodiment, the obliquely extending direction of the first elastic piece 51 is a direction toward the end of the other end of the movable spring leading piece 33.
In this embodiment, the other end of the first elastic piece 51 is further provided with a second bent portion 511, and the second bent portion 511 of the first elastic piece 51 is in contact with the movable spring lead-out piece 33 when the movable and stationary contacts are disconnected. After the first elastic piece 51 is provided with the second bent portion 511, the contact portion of the first elastic piece 51 and the movable spring leading-out piece 33 is in arc-shaped surface contact, so that the sliding resistance of the first elastic piece 51 on the movable spring leading-out piece 33 is reduced, and the generation of debris caused by the friction of the first elastic piece 51 on the movable spring leading-out piece 33 can be reduced.
In this embodiment, the first elastic piece 51 and the movable spring 31 are formed as an integral structure, and the first elastic piece 51 is formed by cutting the body of the movable spring 31 into a freely swingable piece and bending the piece to extend obliquely toward the movable spring leading piece 33.
In this embodiment, the movable spring 31 is formed by three spring pieces 35, 36, and 37 stacked in sequence, and the first elastic piece 51 is formed by cutting a body of one spring piece 37 of the three spring pieces, which is closer to the movable spring lead-out piece, into a freely swingable piece and bending the body to extend obliquely toward the movable spring lead-out piece 33; in this embodiment, the body of the spring 37 is cut into freely swingable pieces at both sides of the spring 37.
In this embodiment, in one of the three spring pieces 35 further away from the movable spring lead-out piece, folded edges 351 are further provided on both sides corresponding to the mounting position of the movable contact 32, and in this embodiment, the folded edges 351 are bent toward one side of the movable contact.
Furthermore, in a position between an end of the other end of the movable spring piece 31 and a joint of the movable spring piece 31 and the movable spring lead-out piece 33 in a surface of the movable spring piece 31 facing the movable spring lead-out piece 33, a second elastic piece 52 extending obliquely toward the end of the other end of the movable spring lead-out piece 33 is further provided, the second elastic piece 52 is closer to the end of the other end of the movable spring lead-out piece 33 than the first elastic piece 51, a convex bud 331 is provided in a surface of the movable spring lead-out piece 33 facing the movable spring piece 31, a preset gap is provided between a tail end of the second elastic piece 52 and the convex bud 331 of the movable spring lead-out piece 33 when the movable and stationary contacts are not separated, and the second elastic piece 52 elastically abuts against the convex bud 331 of the movable spring lead-out piece 33 when the movable and stationary contacts are separated. In this embodiment, the second resilient tab 52 is also formed by cutting the body of the spring 37 into a freely swingable piece and bending the piece to extend obliquely toward the movable spring leading tab 33.
The utility model discloses a can reduce electromagnetic relay of contact disconnection shake, adopted and drawn forth still to be equipped with first flexure strip 51 between the piece at movable contact spring and movable spring, the one end of this first flexure strip 51 is fixed on movable contact spring 31, the other end of this first flexure strip 51 draws forth piece 33 direction slant to movable spring and stretches out, and make the contact position department of the other end of first flexure strip 51 in the junction that corresponds to movable contact spring 31 and movable contact 32 to movable contact spring 31 and the region between the junction that moves spring and movable spring drawn forth piece 33, moving, when the stationary contact end divides absolutely, this first flexure strip 51's the other end and moving draw forth and have a preset clearance M between the piece 33, moving, when the stationary contact divides absolutely, this first flexure strip 51 elasticity supports to move on the spring draws forth piece 33. The utility model discloses a this kind of structure is that the biggest department of shake range (usually shake range in the middle of the movable contact spring is the biggest) at movable contact spring 31 sets up first flexure strip 51 (being equivalent to the pressure spring), in contact disconnection process, first flexure strip 51 can draw the contact of piece 33 with the movable contact spring, the movable contact spring is drawn piece 33 and can be applyed a power for movable contact spring 31, first flexure strip 51 produces elastic deformation simultaneously, convert some kinetic energy into elastic potential energy, make the partial speed reduction of movable contact spring, thereby reach the shock attenuation, the effect that the rebound weakens.
When the movable contact and the static contact are not disconnected, a preset gap M is formed between the other end of the first elastic piece 51 and the movable spring leading-out piece 33, so that the anti-adhesion capability of the contact is prevented from being influenced by the counter force of the first elastic piece before the contact is not disconnected.
The utility model discloses a can reduce electromagnetic relay of contact disconnection shake has adopted in movable contact spring 31, still is equipped with the first kink 34 that is used for strengthening the movable contact spring flexibility near the department of being connected that movable contact spring 31 draws forth piece 33 with the movable contact spring, first flexure strip 51 is established in the first kink 34 of movable contact spring to the region between the junction of movable contact spring 31 and movable contact 32. The utility model discloses an in-process that this kind of structure was pulled open at movable reed 31, draw forth piece 33 contact with the movable spring behind the contact disconnection to the fulcrum driven reed 31 that the movable reed 31 pulled open and the junction that the movable spring drawn forth piece 33 shift to the contact department that first flexure strip 51 and movable spring drawn forth piece 33, the length that becomes the looks movable reed shortens, the counter-force grow that pulls open the movable reed, the kinetic energy of movable spring part converts elastic potential energy into, thereby slows down, the rebound weakens.
The utility model discloses a can reduce electromagnetic relay of contact disconnection shake has adopted in the orientation of movable contact spring 31 moves the spring and has drawn forth the one side of piece, in end to movable contact spring 31 of the other end of movable contact spring 31 and the position between the junction that the piece 33 was drawn forth to the movable contact spring, still be equipped with to the second flexure strip 52 that stretches out to the end direction slant of the other end that the piece 33 was drawn forth to the movable contact spring, and second flexure strip 52 is close to more for first flexure strip 51 the end of the other end that the piece 33 was drawn forth to the movable contact spring, the orientation that the piece 33 was drawn forth to the movable contact spring be equipped with protruding bud 331 in the one side of movable contact spring, moving, when stationary contact divides absolutely, this second flexure strip 52 elasticity supports on the protruding bud 331 that the piece was drawn forth to the movable contact spring. The utility model discloses a this kind of structure, through increasing second flexure strip 52, further strengthen the shock attenuation, the effect that the rebound weakens.
The utility model discloses a can reduce electromagnetic relay of contact disconnection shake, adopted in the orientation of movable contact spring 31 moves the spring and draws forth the one side of piece 33, be equipped with first flexure strip 51 and be equipped with second flexure strip 52, in the contact closure in-process, because first flexure strip 51 draws forth piece 33 contact and second flexure strip 52 and moves the spring and draws forth the protruding bud 331 contact of piece and have the precompression, the elastic potential energy of production progressively releases, its effort is the same with the coil appeal direction of magnetic circuit part, can accelerate the contact closure, drive consumption when reducing the contact closure.
Example two
Referring to fig. 8, the difference between the electromagnetic relay of the present invention and the first embodiment is that the first elastic piece 51, which is a freely swingable piece body cut by the body of the reed 37, is located in the middle of the reed 37.
EXAMPLE III
Referring to fig. 9, the difference between the electromagnetic relay of the present invention and the first embodiment is that the folded edge 351 is bent toward a side away from the moving contact.
Example four
Referring to fig. 10, the difference between the electromagnetic relay of the present invention and the first embodiment is that a protruding bud is not disposed in a surface of the movable spring piece facing the movable spring piece 33, when the movable and stationary contacts are not disconnected, a preset gap is disposed between the end of the second elastic piece 52 and the movable spring piece 33, and when the movable and stationary contacts are disconnected, the second elastic piece 52 elastically abuts against the movable spring piece 33.
EXAMPLE five
Referring to fig. 11, the difference between the electromagnetic relay according to the first embodiment of the present invention and the electromagnetic relay according to the first embodiment of the present invention is that the oblique extending direction of the first elastic piece 51 is a direction toward the connection portion between the movable spring piece 31 and the movable spring lead-out piece 33.
EXAMPLE six
Referring to fig. 12 to 17, a difference between the electromagnetic relay of the present invention and the first embodiment is that a first elastic piece 51 and a second elastic piece 52 form a single component 5, a joint of the first elastic piece 51 and the second elastic piece 52 is fixed to a surface of the movable spring piece 31 facing the movable spring leading-out piece 33, one end of the first elastic piece 51 and one end of the second elastic piece 52 respectively extend obliquely toward the movable spring leading-out piece 33, an oblique extending direction of the first elastic piece 51 is a direction facing a joint of the movable spring piece 31 and the movable spring leading-out piece 33, and an oblique extending direction of the first elastic piece 31 is an end direction of the other end of the movable spring leading-out piece 33; the separate part 5 is fixed to the movable spring 31 by snap-in engagement and rests on one of the three springs 35, 36, 37 closer to the movable spring lead-out 37.
EXAMPLE seven
Referring to fig. 18 to 19, the electromagnetic relay according to the present invention is different from the first embodiment in that the first elastic piece 51 is an independent component, one end of the first elastic piece 51 is fixed to the side of the movable spring leading-out piece 33 facing the movable spring piece 31 by welding, the other end of the first elastic piece 51 extends obliquely towards the movable spring piece 31, and the extending direction of the first elastic piece 51 is the direction of the end facing the other end of the movable spring piece 31.
Example eight
Referring to fig. 20, the difference between the electromagnetic relay according to the present invention and the seventh embodiment is that one end of the first elastic piece 51 is fixed to the movable spring piece 33 facing the movable spring piece 31 by riveting.
Example nine
Referring to fig. 21 to 22, a difference between the electromagnetic relay of the present invention and the seventh embodiment is that one end of the first elastic piece 51 is fixed to the surface of the movable spring leading-out piece 33 facing the movable spring piece 31 by riveting, and the oblique extending direction of the first elastic piece 51 is the direction facing the connection portion between the movable spring piece 31 and the movable spring leading-out piece 33.
Example ten
Referring to fig. 23, the difference between the electromagnetic relay according to the present invention and the ninth embodiment is that one end of the first elastic piece 51 is fixed to the movable spring piece 33 by welding and fixing on the surface facing the movable spring piece 31.
The foregoing is illustrative of the preferred embodiment of the present invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solutions disclosed above can be used by those skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.
Claims (15)
1. An electromagnetic relay capable of reducing contact opening jitter comprises a movable spring part, a static spring part and a pushing card; the static spring part comprises a rigid static spring piece and a static contact fixed on the static spring piece; the movable spring part comprises a flexible movable spring piece, a movable contact and a rigid movable spring leading-out piece, one end of the movable spring piece is fixed with one end of the movable spring leading-out piece and connected into a V shape, the end head of the other end of the movable spring piece is connected with the pushing clamp, the movable contact is fixed on the surface, back to the movable spring leading-out piece, in the end head of the other end of the movable spring piece, and the movable contact is correspondingly matched with the static contact; the method is characterized in that: and a first elastic sheet is also arranged between the movable spring piece and the movable spring leading-out sheet, one end of the first elastic sheet is fixed on the movable spring piece or the movable spring leading-out sheet, the other end of the first elastic sheet obliquely extends towards the movable spring leading-out sheet or the movable spring piece, and the contact position of the other end of the first elastic sheet is in an area from the joint of the movable spring piece and the movable contact to the joint of the movable spring piece and the movable spring leading-out sheet, when the movable contact and the static contact are disconnected, the first elastic sheet is elastically abutted to the movable spring leading-out sheet or the movable spring piece, so that the shaking phenomenon when the contact is disconnected is reduced.
2. The electromagnetic relay of claim 1, wherein: when the movable contact and the static contact are not disconnected, a preset gap is formed between the other end of the first elastic piece and the movable spring leading-out piece or the movable spring piece.
3. The electromagnetic relay of claim 1, wherein: in the movable spring piece, a first bending part used for enhancing the flexibility of the movable spring piece is further arranged at a position close to the connection position of the movable spring piece and the movable spring leading-out piece, and the contact position of the other end of the first elastic piece is located in a region from the first bending part corresponding to the movable spring piece to the connection position of the movable spring piece and the movable contact.
4. An electromagnetic relay according to claim 1, 2 or 3, characterized in that: the first elastic piece is an independent part, one end of the first elastic piece is fixed on one surface of the movable spring piece facing the movable spring leading-out piece, and the other end of the first elastic piece extends out obliquely towards the movable spring leading-out piece.
5. The electromagnetic relay of claim 4, wherein: the inclined extending direction of the first elastic sheet is towards the connecting position of the movable spring sheet and the movable spring leading-out sheet.
6. The electromagnetic relay of claim 4, wherein: the oblique extending direction of the first elastic sheet is towards the end head direction of the other end of the movable spring leading-out sheet.
7. The electromagnetic relay of claim 4, wherein: the other end of the first elastic piece is also provided with a second bending part, and when the movable contact and the static contact are disconnected, the second bending part of the first elastic piece is contacted with the movable spring leading-out piece.
8. An electromagnetic relay according to claim 1, 2 or 3, characterized in that: the first elastic sheet is an independent part, one end of the first elastic sheet is fixed on one surface of the movable spring leading-out sheet facing the movable spring piece, and the other end of the first elastic sheet extends obliquely towards the direction of the movable spring piece.
9. The electromagnetic relay of claim 8, wherein: the inclined extending direction of the first elastic sheet is towards the connecting position of the movable spring sheet and the movable spring leading-out sheet.
10. The electromagnetic relay of claim 8, wherein: the oblique extending direction of the first elastic sheet is towards the end head direction of the other end of the movable spring sheet.
11. The electromagnetic relay of claim 8, wherein: the other end of the first elastic piece is also provided with a second bending part, and when the movable contact and the static contact are disconnected, the second bending part of the first elastic piece is contacted with the movable spring.
12. The electromagnetic relay of claim 4, wherein: the movable spring plate is formed by overlapping three spring plates, and the first elastic plate is fixed on the three spring plates; and in one of the three reeds which is far away from the movable spring leading-out piece, two sides corresponding to the installation position of the movable contact are respectively provided with a hem.
13. An electromagnetic relay according to claim 1, 2 or 3, characterized in that: the first elastic sheet and the movable spring sheet are of an integrated structure, and the first elastic sheet is formed by cutting a body of the movable spring sheet into a sheet body capable of swinging freely and bending the sheet body to extend obliquely towards the direction of the movable spring leading-out sheet.
14. The electromagnetic relay of claim 13, wherein: the movable spring plate is formed by overlapping three spring plates, and the first elastic plate is formed by cutting a body of one of the three spring plates, which is closer to the movable spring leading-out plate, into a freely-swinging plate body and bending the body to extend out obliquely towards the movable spring leading-out plate; and in one of the three reeds which is far away from the movable spring leading-out piece, two sides corresponding to the installation position of the movable contact are respectively provided with a folded edge.
15. An electromagnetic relay according to claim 1 or 2, characterized in that: furthermore, in one surface of the movable spring piece facing the movable spring lead-out piece, a second elastic piece extending towards the end of the other end of the movable spring lead-out piece in an inclined manner is further arranged in a position from the end of the other end of the movable spring piece to a joint of the movable spring piece and the movable spring lead-out piece, the second elastic piece is closer to the end of the other end of the movable spring lead-out piece relative to the first elastic piece, a convex bud is arranged in one surface of the movable spring lead-out piece facing the movable spring piece, when the movable contact and the static contact are disconnected, a preset gap is formed between the tail end of the second elastic piece and the convex bud of the movable spring lead-out piece, and when the movable contact and the static contact are disconnected, the second elastic piece elastically abuts against the convex bud of the movable lead-out piece.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921620359.3U CN210692445U (en) | 2019-09-26 | 2019-09-26 | Electromagnetic relay capable of reducing contact breaking jitter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921620359.3U CN210692445U (en) | 2019-09-26 | 2019-09-26 | Electromagnetic relay capable of reducing contact breaking jitter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110867351A (en) * | 2019-09-26 | 2020-03-06 | 厦门宏发电力电器有限公司 | Electromagnetic relay capable of reducing contact disconnection jitter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110867351A (en) * | 2019-09-26 | 2020-03-06 | 厦门宏发电力电器有限公司 | Electromagnetic relay capable of reducing contact disconnection jitter |
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