CN116230454A - Relay with movable reed deflection preventing mechanism - Google Patents
Relay with movable reed deflection preventing mechanism Download PDFInfo
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- CN116230454A CN116230454A CN202310511260.4A CN202310511260A CN116230454A CN 116230454 A CN116230454 A CN 116230454A CN 202310511260 A CN202310511260 A CN 202310511260A CN 116230454 A CN116230454 A CN 116230454A
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- movable reed
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- relay
- pushing rod
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/56—Contact spring sets
- H01H50/58—Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
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- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
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Abstract
The invention relates to a high-voltage direct current relay, in particular to a relay with a movable reed deflection preventing mechanism. The utility model provides a relay with movable reed anti-deflection mechanism, lies in the relay and with the contact of catch bar but not along with catch bar synchronous motion's spare be the motionless piece, be equipped with direct complex first limit structure between motionless piece and the catch bar, first limit structure is including setting up the first plane on motionless piece and setting up the second plane on the catch bar outer wall, first plane and second plane all extend along the catch bar axial, first plane and second planar extending direction with the catch bar axial is parallel, first plane is less than along catch bar axial length along the catch bar second plane, first plane with the second plane contact is in order to directly restrict the catch bar rotation. The invention has the advantages of avoiding the deflection of the movable reed, along with simple structure and lower cost.
Description
Technical Field
The invention relates to a high-voltage direct current relay, in particular to a relay with a movable reed deflection preventing mechanism.
Background
The chinese patent application No. 201821704410.4 discloses a housing of a dc relay, which includes a top wall and four side walls, wherein the top wall and the four side walls enclose a cavity with a downward opening; two mounting holes for mounting the fixed contact are formed in the top wall; the four side walls of the housing comprise two first side walls corresponding to the long sides of the movable reed and two second side walls corresponding to the short sides of the movable reed; one end of the two first side walls, which corresponds to the length of the movable reed, is respectively provided with a first convex rib which is vertically arranged and is used for realizing the precise positioning of the movable assembly of the direct current relay. The movable component refers to a part which can move up and down under the influence of magnetic force of a relay, such as a movable iron core, a push rod, a movable reed, a movable contact, a compression spring on the push rod and the like; correspondingly, the parts which do not move up and down with the moving component are fixed parts, such as yoke plates, positioning plates arranged on the yoke plates, upper shaft sleeves, lower shaft sleeves, magnetic conductive cylinders and the like.
In the scheme, the gap between the first convex rib and the movable reed of the movable assembly is smaller, namely the first convex rib is in micro clearance fit with the movable reed of the movable assembly, so that the movable reed can be prevented from rotating in the moving process, and the movable reed can be prevented from being blocked in the moving process and the assembling process.
The housing is made of insulating material, typically ceramic. When the relay product works, the magnetic conductive movable iron core and the pushing rod generate excitation effect when the coil is powered up, and the pushing rod deflects or rotates under the action of electromagnetic field force; when the movable iron core and the push rod which move deflect or rotate, the movable reed can rub with the first protruding rib and other limiting rib structures on the ceramic housing, foreign matters such as ceramic particles can be generated in the friction process, the contact is easy to be polluted by the foreign matters in the cavity where the movable contact and the movable contact are located, and the contact resistance is increased or even is not conducted.
The Chinese patent with the application number of 201611101778.7 discloses a deflection preventing mechanism of a movable reed of a high-voltage direct-current relay, which comprises the movable reed, wherein the movable reed is in linkage with a pushing rod, the upper section of the pushing rod is positioned above a yoke iron plate and is fixed with the movable reed, a positioning plate is arranged on the yoke iron plate, a return spring is connected between the left part of the movable reed and the positioning plate and between the right part of the movable reed and the positioning plate, at least one of a drag hook at the upper end of the return spring and a drag hook at the lower end of the return spring is fixed with a slide rod, the drag hook can slide on the slide rod, the slide rod comprises an upper slide rod fixed with the drag hook at the upper end of the return spring and a lower slide rod fixed with the drag hook at the lower end of the return spring, and the upper slide rod is fixed with the movable reed.
In the scheme, the two sides of the movable reed are provided with the return springs, and the two ends of the movable reed are respectively tensioned and acted on the positioning plate, so that the two return springs always have an acting force for preventing the movable reed from horizontally rotating; when the moving assembly deflects or rotates under the action of electromagnetic field force, the return spring can pull back the moving reed, so that the precise alignment and contact of the moving contact and the fixed contact are ensured, and the condition that the moving reed is contacted with the limiting rib in the ceramic cover is avoided.
The above solution has the following drawbacks: the movable reed is required to be processed in a hole groove structure and the upper sliding rod is required to be installed, the structure for being matched with the lower sliding rod is required to be arranged on the yoke plate or the positioning plate, the parts are more, the assembly is complex, and the production cost is high.
Disclosure of Invention
The invention aims to provide a relay with a movable reed deflection preventing mechanism, which can avoid the deflection of the movable reed and has the advantages of simple structure and low cost.
In order to achieve the above purpose, the invention adopts the following technical scheme: the relay with the movable reed deflection preventing mechanism comprises a movable reed, a yoke plate assembly, a movable iron core and a push rod, wherein the movable reed is provided with a movable reed through hole, the yoke plate assembly is provided with a yoke iron plate assembly through hole, the movable iron core is provided with a movable iron core through hole, the upper section of the push rod is positioned in the movable reed through hole and connected with the movable reed, the middle section of the push rod is slidably arranged in the yoke plate assembly through hole, and the lower section of the push rod is positioned in the movable iron core through hole and fixed with the movable iron core; the relay is characterized in that a part which is positioned in the relay and is in contact with the pushing rod but does not move synchronously with the pushing rod is a fixed part, a first limit structure which is directly matched with the pushing rod is arranged between the fixed part and the pushing rod, the first limit structure comprises a first plane arranged on the fixed part and a second plane arranged on the outer wall of the pushing rod, the first plane and the second plane both extend along the axial direction of the pushing rod, the extending directions of the first plane and the second plane are parallel to the axial direction of the pushing rod, the length of the first plane along the axial direction of the pushing rod is smaller than the length of the second plane along the axial direction of the pushing rod, and the first plane contacts with the second plane to directly limit the rotation of the pushing rod.
The fixed part is a part which is contacted with the push rod but does not move along with the push rod, and is at least one part of a yoke iron plate of a relay, a lower shaft sleeve positioned in the magnetic conduction cylinder, a positioning plate positioned on the yoke iron plate, an upper shaft sleeve positioned at the center of the yoke iron plate, a special-shaped magnetic conduction cylinder, a metal shell and other parts.
When the movable iron core and the pushing rod are acted by electromagnetic field force, the second plane of the pushing rod can be propped against the first plane on the fixed piece, so that the rotation of the pushing rod is limited, the movable reed is prevented from being driven by the pushing rod to deflect or rotate, friction between the movable reed and a limit rib and other structures on the inner wall of the relay ceramic cover is avoided, and generation of foreign matters such as metal or ceramic particles is avoided. Compared with the mode of arranging the return spring between the movable reed and the yoke plate, the structure is simpler, the number of arranged parts is less, the processing and assembling procedures are less, and the production and assembling cost can be reduced.
The side wall or the through hole of the fixed part is processed to obtain the first plane, and the pushing rod is processed to correspond to the part of the fixed part with the first plane to obtain the second plane. The yoke plate component refers to a part at the yoke plate, and is the yoke plate when a positioning plate is not arranged on the upper side of the yoke plate of the relay and an upper shaft sleeve is not arranged at the center of the yoke plate; when the upper side of the yoke plate of the relay is provided with a positioning plate or an insulating plate, the yoke plate assembly comprises the yoke plate and the positioning plate or the insulating plate. The first plane and the second plane are contacted with each other to limit the rotation of the pushing rod, and compared with the pushing rod with elliptical cross section, quincuncial cross section and the like, the pushing rod has the advantages of simpler structure, lower cost and lower manufacturing process requirement.
Preferably, a second limiting structure is arranged between the movable reed and the pushing rod, and the second limiting structure comprises a third plane arranged on the wall of the movable reed through hole and a fourth plane arranged on the outer wall of the upper section of the pushing rod.
The invention realizes the anti-deflection between the movable reed and the pushing rod through the second limiting structure, avoids the rotation of the movable reed under the action of parts such as a compression spring and the like, and further avoids the rotation of the movable reed under the action of a far-distance power-on coil.
When the relay is a sealed relay, namely when the cavity where the dynamic contact and the static contact of the relay are located is a sealed cavity, the second limiting structure between the movable reed and the pushing rod and the first limiting structure between the yoke plate (the non-movable part) and the pushing rod are used as anti-deflection mechanisms, and the anti-deflection effect is improved through two-point anti-deflection.
When the relay is a non-sealing relay, namely when the cavity where the movable contact and the fixed contact of the relay are located is not required to be a sealing cavity, the movable contact and the fixed contact can be prevented from deflecting through a second limiting structure between the movable reed and the pushing rod and a first limiting structure between any one of the fixed pieces and the pushing rod, and two first limiting structures between two fixed pieces and two positions of the pushing rod can be adopted as two-point anti-deflection, so that the anti-deflection effect is further improved.
Preferably, the upper end of the circumferential outer wall of the push rod is provided with a clamping groove and is clamped with a clamping spring, the movable reed is limited at the lower side of the clamping spring, a limiting structure is arranged between the upper section of the push rod and the movable reed, the upper end of a fourth plane at the upper section of the push rod is connected with the clamping groove, and the distance of the fourth plane along the axial direction of the push rod is greater than the thickness of the movable reed.
Through the arrangement, the use stability of the movable reed is further improved, and the alignment and contact of the movable contact and the movable contact are ensured.
Preferably, the stationary part is a yoke plate assembly, the first limiting structure is arranged between the yoke plate assembly and the middle section of the pushing rod, the yoke plate assembly comprises a yoke plate, the yoke plate is provided with a yoke plate assembly through hole, the wall of the yoke plate assembly through hole is provided with a first plane, and the outer wall of the middle section of the pushing rod is provided with a second plane.
The first limit structure is located at the middle section of the pushing rod, has the best anti-rotation and anti-inclination effect on the whole pushing rod, and accordingly avoids the pushing rod from driving the movable reed at the upper end to deflect. Wherein, first limit structure is not set up in yoke plate subassembly's locating plate department, and the locating plate can adopt conventional insulating plastics to make, further reduction in production cost.
Preferably, the fixed part is a lower shaft sleeve, the lower shaft sleeve is positioned at the lower side of the movable iron core and fixed in the magnetic conduction cylinder, the first limiting structure is arranged between the lower shaft sleeve and the middle section of the push rod, a lower shaft sleeve through hole with an upward opening is formed in the middle of the lower shaft sleeve, a first plane is formed in the wall of the lower shaft sleeve through hole, and a second plane is formed in the outer wall of the lower section of the push rod.
Through the arrangement, the lower section of the push rod is prevented from rotating and limiting, so that the end of the longer push rod is prevented from deflecting, and the whole push rod is prevented from rotating everywhere. The lower shaft sleeve can be installed and fixed by adopting the fixed installation mode of the lower shaft sleeve of any relay.
Preferably, the lower shaft sleeve is fixed at the lower end inside the magnetic conduction barrel, the lower shaft sleeve is provided with a positioning protrusion extending laterally, and the magnetic conduction barrel is provided with a positioning hole matched with the positioning protrusion.
The positioning protrusion and the positioning hole are arranged to realize the positioning between the lower shaft sleeve and the magnetic conduction cylinder, so that the lower shaft sleeve is prevented from deflecting relative to the magnetic conduction cylinder, and the deflection preventing effect of the push rod and the movable reed is ensured. The positioning holes can be through holes or blind holes.
Preferably, the lower shaft sleeve is integrally injection-molded in the magnetic conductive cylinder. The arrangement is more convenient for assembling and fixing the lower shaft sleeve and the magnetic conduction cylinder, and can ensure the positioning and fixing effects between the lower shaft sleeve and the magnetic conduction cylinder.
Preferably, the lower side of the yoke plate assembly is provided with a U-shaped yoke, the bottom of the U-shaped yoke is provided with a positioning groove, the lower end of the magnetic conduction cylinder is provided with a positioning part positioned in the positioning groove, a third limit structure matched with the bottom of the U-shaped yoke is arranged between the positioning part of the magnetic conduction cylinder and the bottom of the U-shaped yoke, and the third limit structure comprises a fifth plane arranged on the groove wall of the positioning groove and a sixth plane arranged on the outer wall of the positioning part.
Through the contact of the fifth plane and the sixth plane of the third limiting structure, the magnetic conduction cylinder and the U-shaped yoke are convenient to be pre-positioned before being welded and fixed, the magnetic conduction cylinder can be prevented from rotating relative to the U-shaped yoke, and the magnetic conduction cylinder and the U-shaped yoke are convenient to be welded and fixed.
Preferably, the distance between the sixth plane and the axis of the magnetic conductive cylinder is smaller than the distance between the outer wall of the magnetic conductive cylinder, which is deviated from the positioning part, and the axis of the magnetic conductive cylinder.
The sixth plane edge is provided with a step, so that the assembly between the magnetic conduction cylinder and the U-shaped yoke can be pre-positioned, and the subsequent fixation between the magnetic conduction cylinder and the U-shaped yoke is facilitated.
The invention has the advantages of avoiding the deflection of the movable reed, along with simple structure and lower cost.
Drawings
Fig. 1 is a sectional view of example 1.
Fig. 2 is a schematic structural view of the push rod of embodiment 1.
Fig. 3 is a schematic structural view of the movable contact spring of embodiment 1.
Fig. 4 is a schematic structural view of the lower bushing of embodiment 1.
Fig. 5 is a schematic view of the structure of the lower sleeve, the magnetic conductive cylinder and the U-yoke of embodiment 1 when they are assembled together.
Fig. 6 is a schematic structural diagram of the magnetic conductive cylinder and the U-yoke of embodiment 1.
Fig. 7 is a cross-sectional view of example 2.
Fig. 8 is another cross-sectional view of embodiment 2.
Fig. 9 is a schematic structural view of a push rod of embodiment 2.
Fig. 10 is a schematic structural view of a movable contact spring of embodiment 2.
Fig. 11 is a schematic structural view of a yoke plate of embodiment 2.
Detailed Description
The invention is further described below with reference to the drawings and specific embodiments.
Example 1
As shown in fig. 1 to 6, the present embodiment discloses a relay with a movable reed deflection preventing mechanism, which is a non-sealing relay, and includes a yoke plate assembly, the yoke plate assembly includes a yoke plate 11, a positioning plate 12 disposed on the yoke plate 11, and an upper shaft sleeve 121 disposed at a central hole of the positioning plate 12, an insulating cover 13 made of ceramic material is disposed on the positioning plate 12, a chamber is formed between the insulating cover 13 and the positioning plate 12, and the movable reed 2 is disposed in the chamber. The movable contact 21 is fixed at two ends of the movable reed 2, the two leading-out ends 14 are fixed on the insulating cover 13, and the fixed contact 141 corresponding to the movable contact is arranged at the lower end of the leading-out ends 14. The lower side of the yoke plate assembly is provided with a U-shaped yoke 15, a magnetic conduction cylinder 16 is arranged in the U-shaped yoke 15, a coil frame 19 is sleeved outside the magnetic conduction cylinder 16, and a lower shaft sleeve 17 and a movable iron core 18 are arranged in the magnetic conduction cylinder 16. Wherein the upper shaft sleeve 121 is wider at the upper side and narrower at the lower side to be supported on the positioning plate 12.
As shown in fig. 1 to 4, the middle part of the movable reed 2 of the present embodiment is provided with a movable reed through hole 22 penetrating up and down, the middle part of an upper shaft sleeve 121 of the yoke plate assembly is provided with a yoke plate assembly through hole, the movable iron core 18 is provided with a movable iron core through hole, the middle part of a lower shaft sleeve 17 is provided with a lower shaft sleeve through hole 171 penetrating up and down, the upper section of the push rod 3 is positioned in the movable reed through hole 22 and connected with the movable reed 2, the middle section of the push rod 3 is slidably matched in the yoke plate assembly through hole, the lower section of the push rod 3 is positioned in the movable iron core through hole and fixed with the movable iron core 18, and the lower end of the push rod 3 is slidably matched in the lower shaft sleeve through hole 171.
As shown in fig. 1 to 4, the parts of the embodiment that are located in the relay and contact with the push rod 3 but do not move synchronously with the push rod 3 are fixed parts, and the lower shaft sleeve 17, the yoke iron plate 11, the positioning plate 12 and the upper shaft sleeve 121 of the embodiment are fixed parts, wherein a first limiting structure that directly cooperates with the push rod 3 to limit the rotation of the push rod 3 is arranged between the fixed part of the lower shaft sleeve 17 and the push rod 3.
As shown in fig. 2 and 4, the first limiting structure includes a first plane 100 disposed on the wall of the through hole 171 of the lower shaft sleeve and a second plane 200 disposed on the lower section of the push rod 3, where the first plane 100 and the second plane 200 both extend along the axial direction of the push rod, and the extending directions of the first plane 100 and the second plane 200 are parallel to the axial direction of the push rod 3, and the length of the first plane 100 along the axial direction of the push rod is smaller than the length of the second plane 200 along the axial direction of the push rod. The number of the first planes 100 at the lower shaft sleeve through hole 171 and the number of the second planes 200 at the lower section of the push rod 3 in this embodiment are two, the shaft sleeve through hole 171 below the two first planes 100 is axially symmetrically arranged, and the two second planes 200 are axially symmetrically arranged with the push rod 3.
As shown in fig. 2 and 3, a second limiting structure is disposed between the movable reed 2 and the push rod 3 in this embodiment, and the second limiting structure includes a third plane 300 disposed on the wall of the movable reed through hole 22 and a fourth plane 400 disposed outside the upper section of the push rod 3. The opposite sides of the hole wall of the movable reed through hole 22 are respectively provided with a third plane 300, the opposite sides of the outer wall of the upper section of the pushing rod 3 are respectively provided with a fourth plane 400, the two third planes 300 are symmetrically arranged by the axis of the movable reed through hole 22, and the two fourth planes 400 are symmetrically arranged by the axis of the pushing rod 3. Wherein, the upper end of the outer wall of the pushing rod 3 in the circumferential direction is provided with a clamping groove 31 and is clamped with a clamping spring 32 and an annular gasket 33, the movable reed 2 is limited at the lower side of the annular gasket 33, the pushing rod 3 is sleeved with an upper compression spring 30, and the movable reed 2 is supported on the upper compression spring 30. Wherein, the upper end of the fourth plane 400 at the upper section of the push rod 3 is connected with the clamping groove 31, and the distance of the fourth plane 400 along the axial direction of the push rod 3 is greater than the axial length of the movable reed through hole 22.
As shown in fig. 4 and 6, the lower sleeve 17 of the present embodiment has positioning protrusions 172 extending to both sides, the magnetic conductive cylinder 16 is provided with positioning holes 161 matching the positioning protrusions 172, and the lower sleeve 17 of the present embodiment is integrally injection-molded in the magnetic conductive cylinder 16, thereby forming the positioning protrusions 172 in the positioning holes 161.
As shown in fig. 5 and 6, the U-shaped yoke 15 includes a bottom and side portions extending upward from both sides of the bottom, the bottom of the U-shaped yoke 15 is provided with a positioning groove 151 penetrating vertically, and the lower end of the magnetic conductive tube 16 is provided with a positioning portion 162 located in the positioning groove 151. A third limit structure matched with each other is arranged between the positioning part 162 of the magnetic conduction cylinder 16 and the positioning groove 151 at the bottom of the U-shaped yoke 15, the third limit structure comprises two fifth planes 500 arranged on the groove wall of the positioning groove 151 and a sixth plane 600 arranged on the outer walls of two opposite sides of the positioning part, the two fifth planes 500 and the two sixth planes 600 are symmetrically arranged, and the distance between the sixth plane 600 and the axis of the magnetic conduction cylinder 16 is smaller than the distance between the outer wall of the magnetic conduction cylinder 16 deviating from the positioning part 162 and the axis of the magnetic conduction cylinder 16.
Example 2
As shown in fig. 7 to 11, the present embodiment discloses a relay with a movable reed deflection preventing mechanism, the relay is a sealed relay, and includes a yoke plate assembly, the yoke plate assembly includes a yoke plate 11, a metal frame 111 disposed at the peripheral outer edge of the yoke plate 11, the lower end of the metal frame 111 is welded and fixed with the upper end surface of the yoke plate 11, an insulating cover 13 made of ceramic material is disposed on the metal frame 111, the lower end of the insulating cover 13 is brazed with the upper end surface of the metal frame 111 to form a sealed chamber, and the movable reed 2 is disposed in the sealed chamber. Two ends of the movable reed 2 are fixed with movable contacts (not shown in the figure), two leading-out ends 14 are fixed on the insulating cover 13, and a fixed contact (not shown in the figure) corresponding to the movable contacts is arranged at the lower end of the leading-out ends 14. The lower side of the yoke plate assembly is provided with a U-shaped yoke 15 and a metal shell 10, a magnetic conduction cylinder 16 is arranged in the U-shaped yoke 15, a coil frame 19 is sleeved outside the lower end of the magnetic conduction cylinder 16, the metal shell 10 is sleeved in the magnetic conduction cylinder 16 and the coil frame 19, the lower end of the metal shell 10 is closed and the upper end of the metal shell 10 is opened, the upper end opening of the metal shell 10 is fixed with the yoke plate 11 in a brazing way, and a movable iron core 18 is in sliding fit in the metal shell 10.
As shown in fig. 7 to 11, a movable spring through hole 22 penetrating up and down is provided in the middle of the movable spring 2 in this embodiment, a yoke plate assembly through hole 110 is provided in the middle of the yoke plate 11 of the yoke plate assembly, a movable iron core 18 is provided with a movable iron core through hole, an upper section of the push rod 3 is located in the movable spring through hole 22 and connected with the movable spring 2, a middle section of the push rod 3 is slidably disposed in the yoke plate assembly through hole 110, and a lower section of the push rod 3 is located in the movable iron core through hole and fixed with the movable iron core 18.
As shown in fig. 7 to 9, the part of the embodiment, which is located in the relay and contacts with the push rod 3 but does not move synchronously with the push rod 3, is a stationary part, the yoke iron plate 11 of the embodiment is a stationary part, and a first limiting structure is directly arranged between the stationary part of the yoke iron plate 11 and the middle section of the push rod 3 to prevent the push rod 3 from rotating.
As shown in fig. 8, 9 and 11, the first limiting structure includes a first plane 100 disposed on the wall of the through hole 110 of the yoke plate assembly and a second plane 200 disposed at the middle section of the push rod 3, the first plane 100 and the second plane 200 both extend along the axial direction of the push rod, the extending directions of the first plane 100 and the second plane 200 are parallel to the axial direction of the push rod 3, and the length of the first plane 100 along the axial direction of the push rod is smaller than the length of the second plane 200 along the axial direction of the push rod. The number of the first planes 100 at the through hole 110 of the yoke plate assembly and the number of the second planes 200 at the middle section of the push rod 3 in this embodiment are two, the two first planes 100 are symmetrically arranged with the axis of the through hole 110 of the yoke plate assembly, and the two second planes 200 are symmetrically arranged with the axis of the push rod 3. Wherein the second plane 200 of the present embodiment extends downward and meets the bottom surface of the push rod 3 for convenience of processing and assembly.
As shown in fig. 8 to 10, a second limiting structure is disposed between the movable reed 2 and the upper section of the push rod 3 in this embodiment, and the second limiting structure includes a third plane 300 disposed on the wall of the movable reed through hole 22 and a fourth plane 400 disposed outside the upper section of the push rod 3. The opposite sides of the hole wall of the movable reed through hole 22 are respectively provided with a third plane 300, the opposite sides of the outer wall of the upper section of the pushing rod 3 are respectively provided with a fourth plane 400, the two third planes 300 are symmetrically arranged by the axis of the movable reed through hole 22, and the two fourth planes 400 are symmetrically arranged by the axis of the pushing rod 3. Wherein, the upper end of the peripheral outer wall of the push rod 3 is provided with a clamping groove 31 and is clamped with a clamping spring 32 and an annular gasket 33, the movable reed 2 is limited at the lower side of the annular gasket 33, the push rod 3 is sleeved with an upper compression spring 30, and the movable reed 2 is supported on the upper compression spring 30; the upper end of the fourth plane 400 at the upper section of the push rod 3 is connected with the clamping groove 31, and the distance of the fourth plane 400 along the axial direction of the push rod 3 is larger than the axial length of the movable reed through hole 22.
The invention has the advantages of avoiding the deflection of the movable reed, along with simple structure and lower cost.
Claims (9)
1. The relay with the movable reed deflection preventing mechanism comprises a movable reed, a yoke plate assembly, a movable iron core and a push rod, wherein the movable reed is provided with a movable reed through hole, the yoke plate assembly is provided with a yoke iron plate assembly through hole, the movable iron core is provided with a movable iron core through hole, the upper section of the push rod is positioned in the movable reed through hole and connected with the movable reed, the middle section of the push rod is slidably arranged in the yoke plate assembly through hole, and the lower section of the push rod is positioned in the movable iron core through hole and fixed with the movable iron core; the method is characterized in that: the relay is characterized in that a part which is positioned in the relay and is in contact with the pushing rod but does not move synchronously with the pushing rod is a fixed part, a first limit structure which is directly matched with the pushing rod is arranged between the fixed part and the pushing rod, the first limit structure comprises a first plane arranged on the fixed part and a second plane arranged on the outer wall of the pushing rod, the first plane and the second plane both extend along the axial direction of the pushing rod, the extending directions of the first plane and the second plane are parallel to the axial direction of the pushing rod, the length of the first plane along the axial direction of the pushing rod is smaller than the length of the second plane along the axial direction of the pushing rod, and the first plane contacts with the second plane to directly limit the rotation of the pushing rod.
2. The relay with the movable reed deflection preventing mechanism according to claim 1, wherein: the movable reed and the pushing rod are provided with a second limiting structure therebetween, and the second limiting structure comprises a third plane arranged on the wall of the movable reed through hole and a fourth plane arranged on the outer wall of the upper section of the pushing rod.
3. The relay with the movable reed deflection preventing mechanism according to claim 2, wherein: the upper end of the circumferential outer wall of the push rod is provided with a clamping groove and is clamped with a clamping spring, the movable reed is limited at the lower side of the clamping spring, a limiting structure is arranged between the upper section of the push rod and the movable reed, the upper end of a fourth plane at the upper section of the push rod is connected with the clamping groove, and the axial distance of the fourth plane along the push rod is greater than the thickness of the movable reed.
4. A relay with a movable reed deflection preventing mechanism according to claim 1 or 2 or 3, characterized in that: the fixed part is a yoke plate assembly, the first limiting structure is arranged between the yoke plate assembly and the middle section of the pushing rod, the yoke plate assembly comprises a yoke plate, the yoke plate is provided with a yoke plate assembly through hole, the wall of the yoke plate assembly through hole is provided with a first plane, and the outer wall of the middle section of the pushing rod is provided with a second plane.
5. A relay with a movable reed deflection preventing mechanism according to claim 1 or 2 or 3, characterized in that: the fixed part is a lower shaft sleeve, the lower shaft sleeve is positioned at the lower side of the movable iron core and fixed in the magnetic conduction cylinder, the first limiting structure is arranged between the lower shaft sleeve and the middle section of the pushing rod, an upward opening lower shaft sleeve through hole is formed in the middle of the lower shaft sleeve, a first plane is arranged on the wall of the lower shaft sleeve through hole, and a second plane is arranged on the outer wall of the lower section of the pushing rod.
6. The relay with movable reed deflection preventing mechanism according to claim 5, wherein: the lower shaft sleeve is fixed at the lower end inside the magnetic conduction barrel, the lower shaft sleeve is provided with a positioning protrusion extending laterally, and the magnetic conduction barrel is provided with a positioning hole matched with the positioning protrusion.
7. The relay with movable reed deflection preventing mechanism according to claim 6, wherein: the lower shaft sleeve is integrally injection molded in the magnetic conduction cylinder.
8. The relay with movable reed deflection preventing mechanism according to claim 5, wherein: the magnetic conduction section of thick bamboo lower extreme is equipped with the constant head tank, magnetic conduction section of thick bamboo lower extreme is equipped with the U-shaped yoke, the magnetic conduction section of thick bamboo lower extreme is located the constant head tank is interior, be equipped with the third limit structure of mutually supporting between the constant head tank and the bottom of U-shaped yoke, third limit structure is including setting up the fifth plane on the constant head tank cell wall and setting up the sixth plane on the constant head tank outer wall.
9. The relay with movable reed deflection preventing mechanism according to claim 8, wherein: the distance between the sixth plane and the axis of the magnetic conduction cylinder is smaller than the distance between the outer wall of the magnetic conduction cylinder, which is deviated from the positioning part, and the axis of the magnetic conduction cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310511260.4A CN116230454B (en) | 2023-05-09 | 2023-05-09 | Relay with movable reed deflection preventing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN116230454B CN116230454B (en) | 2023-09-26 |
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| CN213093125U (en) * | 2020-10-27 | 2021-04-30 | 三友联众集团股份有限公司 | Improved vacuum arc extinguish chamber |
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|---|---|
| CN116230454B (en) | 2023-09-26 |
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