CN114093719A - Moving assembly of high-voltage direct-current relay and assembly method thereof - Google Patents
Moving assembly of high-voltage direct-current relay and assembly method thereof Download PDFInfo
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- CN114093719A CN114093719A CN202111263909.2A CN202111263909A CN114093719A CN 114093719 A CN114093719 A CN 114093719A CN 202111263909 A CN202111263909 A CN 202111263909A CN 114093719 A CN114093719 A CN 114093719A
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- iron core
- groove
- push rod
- movable iron
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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
- H01H49/00—Apparatus or processes specially adapted to the manufacture of relays or parts thereof
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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
- H01H50/32—Latching movable parts mechanically
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a movable assembly of a high-voltage direct-current relay and an assembly method thereof, wherein the movable assembly comprises a push rod, a movable iron core and a stop piece; the push rod polish rod is matched in the through hole of the movable iron core; the bottom of the movable iron core is provided with a first groove with a downward opening, and the side wall of the first groove is obliquely arranged; the bottom section of the push rod corresponds to the first groove of the movable iron core, and the stop piece is formed in an area surrounded by the first groove of the movable iron core and the bottom section of the push rod in an injection molding mode and realizes the fixation of the push rod and the movable iron core. The invention cancels the threaded connection by using the polished rod for positioning, can effectively solve the problem of thread eccentricity, and solves the problem that the rotation of the iron core in the X/Y direction cannot be effectively limited due to the clearance existing between the tooth tops and the tooth bottoms between the internal thread and the external thread; the glue is dispensed by adopting the stop piece to stop the position, so that the defects of organic matters, cracking, generation of foreign matters and the like caused by glue dispensing can be avoided, the time required by glue dispensing and curing is reduced, and the production speed is further improved.
Description
Technical Field
The invention relates to the technical field of relays, in particular to a movable component of a high-voltage direct-current relay and an assembling method thereof.
Background
The high-voltage direct-current relay in the prior art generally adopts a movable spring direct-acting (also called solenoid direct-acting) structure, a contact part of the high-voltage direct-current relay comprises two static contacts (namely load leading-out ends) and a movable assembly, the movable assembly comprises a movable spring part, a push rod assembly and a movable iron core, the movable spring part is matched between the two static contacts in a bridge manner and is arranged at the top of the push rod assembly, two movable contacts of the movable spring part are respectively contacted with or separated from the two static contacts through the reciprocating motion of the push rod assembly, and when the two movable contacts are contacted, current flows in from one static contact and flows out from the other static contact after passing through the movable spring part. The catch bar subassembly includes spring holder and catch bar usually, and the spring holder is fixed at the top of catch bar, and through the cooperation of spring holder and U type basket, can install the movable reed at the top of catch bar subassembly, the lower part of catch bar then with move the iron core fixed mutually, through moving the cooperation of iron core and magnetic circuit part, drive the catch bar back and forth movement by moving the iron core, because move the iron core need with catch bar synchronous motion, consequently, just need will move the iron core and fix the lower part at the catch bar. In the prior art, the moving iron core is usually limited to move and rotate in the X/Y direction of the horizontal plane relative to the push rod by matching the external thread of the push rod with the internal thread of the moving iron core, and the moving iron core is limited to move and rotate in the Z direction relative to the push rod by dispensing and fixing the bottom of the moving iron core and the push rod.
In the prior art, due to the fact that a gap exists between the thread tops and the thread bottoms between the inner threads and the outer threads, rotation of the movable iron core in the X/Y direction cannot be effectively limited, the problem that the axis is eccentric and the movable iron core is inclined is solved, the product movement process has more serious interference, electrical parameters such as product suction and rebound are affected, meanwhile, contact point surfaces and the movable iron core are not parallel in contact when the movable iron core is closed, the stability of holding force is reduced, and the product short-circuit resistance performance is poor. And adopt some glue fixed mode to restrict moving and rotating of movable core in the Z direction, then have following drawback: firstly, as the product moves for a long time, contacts are closed, and works at a high temperature for a long time, the risk of cracking glue and generating foreign matters exists, and the product is seriously led to be dead defects such as non-conduction and the like; secondly, the volatilization of organic substances influences the atmosphere of the sealed cavity to reduce the arc extinguishing capability; thirdly, the production period is long and the beat is slow, the current production is 110 ℃, the baking and cooling of the oven is more than 40mins, and the equipment occupies a large area and is large in investment; fourthly, the difficulty of controlling the amount of liquid is higher, the glue amount is more and is easy to overflow, the glue amount is less and unreliable, and air bubbles are easy to generate.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a movable assembly of a high-voltage direct-current relay and an assembly method thereof, wherein a polished rod is used for positioning to cancel threaded connection, so that the problem of thread eccentricity can be effectively solved, and the problem that the rotation of an iron core in the X/Y direction cannot be effectively limited due to the clearance existing between the tops and bottoms of internal and external threads is solved; the glue is dispensed by adopting the stop piece to stop the position, so that the defects of organic matters, cracking, generation of foreign matters and the like caused by glue dispensing can be avoided, the time required by glue dispensing and curing is reduced, and the production speed is further improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: a movable component of a high-voltage direct-current relay comprises a push rod, a movable iron core and a stop piece made of plastic materials; a downward first step is arranged at the upper position of the lower section of the push rod, and the first step of the push rod abuts against the movable iron core; the movable iron core is provided with a through hole penetrating up and down, and a polish rod at the middle part of the lower section of the push rod is matched in the through hole of the movable iron core; a first groove with a downward opening is arranged at the bottom of the movable iron core corresponding to the through hole, the side wall of the first groove is obliquely arranged, and the first groove is gradually inclined outwards from the bottom of the groove to the opening direction; the bottom section of the pushing rod corresponds to the first groove of the movable iron core, the stop piece is formed in an area surrounded by the first groove of the movable iron core and the bottom section of the pushing rod in an injection molding mode and used for fixing the pushing rod and the movable iron core, and the top end of the stop piece abuts against the bottom of the first groove to limit the movable iron core to move downwards relative to the pushing rod.
And a convex ring surrounding the circumferential surface of the push rod is also arranged in the bottom section of the push rod.
The convex rings of the push rod are one or a plurality of mutually spaced convex rings.
And an annular groove surrounding the circumferential surface of the push rod is also arranged in the bottom section of the push rod.
The annular grooves of the push rod are one or a plurality of grooves arranged at intervals.
A second groove with an upward opening is formed in the position, corresponding to the through hole, of the upper part of the movable iron core; and the first step of the push rod is abutted against the groove bottom of the second groove of the movable iron core.
A method for assembling a movable component of a high-voltage direct-current relay comprises the following steps:
a spring seat is formed on the top of the push rod in an injection molding mode;
a pushing rod with a spring seat sequentially penetrates through the yoke iron plate, the static iron core, the return spring and the movable iron core from top to bottom, the spring seat is arranged on the yoke iron plate, and the static iron core is matched in the yoke iron plate;
the downward step arranged on the push rod is abutted against the groove bottom of the upper groove of the movable iron core, and the return spring is elastically tensioned between the static iron core and the movable iron core, so that the bottom section of the push rod is correspondingly arranged in the lower groove of the movable iron core;
the stop piece is formed by injection molding of an area defined by the bottom section of the push rod and the lower groove of the movable iron core, the stop piece is fixed between the push rod and the movable iron core in an injection molding mode, and the top end of the stop piece abuts against the groove bottom of the lower groove to limit the movable iron core to move downwards relative to the push rod.
Furthermore, the groove wall of the lower groove of the movable iron core is made into an inclined plane shape, and the inclined plane is gradually inclined outwards from the groove bottom of the lower groove to the opening direction of the lower groove, so that the side wall of the stop part is in a corresponding inclined plane shape.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adopts the structure that the polished rod at the middle part of the lower section of the push rod is matched in the through hole of the movable iron core, and the stop piece made of plastic material is manufactured in the lower groove of the movable iron core in an integrated forming mode to be used as a stop component for limiting the downward movement of the movable iron core relative to the push rod. According to the structure, the threaded connection is cancelled by using the polished rod for positioning, so that the problem of thread eccentricity can be effectively solved, and the problem that the rotation of the iron core in the X/Y direction cannot be effectively limited due to the clearance existing between the tops and the bottoms of the inner and outer threads is solved; the stop piece made of plastic materials stops and dispensing is cancelled, so that the defects of organic matters, cracking, generation of foreign matters and the like caused by dispensing can be avoided, the time required by dispensing and curing is shortened, and the production speed is further improved.
2. The groove wall of the lower groove of the movable iron core is made into an inclined plane shape, and the inclined plane is gradually inclined outwards from the groove bottom of the lower groove to the opening direction of the lower groove, so that the side wall of the stop piece is in a corresponding inclined plane shape. According to the structure, the longitudinal force borne in the Z direction can be decomposed by matching the inclined plane shape of the side wall of the stop piece with the inclined plane shape of the lower groove of the movable iron core.
The invention is further explained in detail with the accompanying drawings and the embodiments; however, the moving component of the high-voltage direct-current relay and the assembling method thereof according to the present invention are not limited to the embodiments.
Drawings
Fig. 1 is an exploded perspective view of a movable assembly of a high-voltage direct-current relay and related components of the relay according to an embodiment of the invention;
fig. 2 is a front view of a moving assembly of the high-voltage direct-current relay of the embodiment of the invention in cooperation with relevant components of the relay;
fig. 3 is a bottom view of the moving assembly of the high-voltage direct-current relay of the embodiment of the invention matched with relevant parts of the relay;
FIG. 4 is a side view of a moving assembly of a high voltage direct current relay of an embodiment of the present invention mated with relay related components;
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 2;
fig. 6 is an exploded schematic view in a main view direction of a moving assembly of the hvdc relay of the embodiment of the present invention in cooperation with relevant components of the relay;
FIG. 7 is a cross-sectional view taken along line B-B of FIG. 6;
FIG. 8 is an enlarged schematic view of section C of FIG. 7;
fig. 9 is an enlarged schematic view of a portion D in fig. 7.
Detailed Description
Examples
Referring to fig. 1 to 9, the moving assembly of the high-voltage direct-current relay of the present invention includes a push rod 1, a moving iron core 2 and a stop member 3 made of plastic material; the relevant part of the relay matched with the invention is a yoke plate 41, the movable component also comprises a spring seat 42, a static iron core 43 and a return spring 44, the spring seat 42 is fixed on the top of the push rod 1 by adopting an injection molding mode, the spring seat 42 is positioned on the yoke plate 41, the spring seat 42 is usually connected with a fixed sheet 45, the static iron core 43 is fixed under the yoke plate 41, the push rod 1 passes through the yoke plate 41 and the static iron core 43 from the upper surface of the yoke plate 41 and is connected with the movable iron core 2 below the static iron core 43, and the return spring 44 is arranged between the static iron core 43 and the movable iron core 2; a first step 11 facing downwards is arranged at the upper position close to the lower section of the push rod 1, the first step 11 of the push rod 1 abuts against the upper surface of the movable iron core 2, and the movable iron core 2 is limited to move upwards relative to the push rod 1 by the limiting function of the first step 11; the movable iron core 2 is provided with a through hole 21 which penetrates through the upper part and the lower part, and a polish rod at the middle part of the lower section of the push rod 1 is matched in the through hole 21 of the movable iron core 2; a first groove 22 with a downward opening is arranged at the position, corresponding to the through hole 21, of the bottom of the movable iron core 2, and the side wall 221 of the first groove 22 is inclined and gradually inclines outwards from the groove bottom 222 to the opening direction; the bottom section of the push rod 1 corresponds to the first groove 22 of the movable iron core 2, the stopper 3 is formed in an area surrounded by the first groove 22 of the movable iron core 2 and the bottom section 12 of the push rod 1 in an injection molding manner, the push rod 1 and the movable iron core 2 are fixed, and the top end of the stopper 3 abuts against the groove bottom 222 of the first groove 22 to limit the movable iron core 2 to move downwards relative to the push rod 1.
In this embodiment, a protruding ring 13 surrounding the circumference of the push rod is further disposed in the bottom section 12 of the push rod 1.
In this embodiment, the two protruding rings 11 of the pushing rod 1 are spaced from each other.
Of course, the bottom section of the push rod may be provided with an annular groove surrounding the periphery of the push rod, and the annular groove of the push rod may be one or a plurality of grooves arranged at intervals.
In this embodiment, a second groove 23 with an upward opening is formed in the upper portion of the movable iron core 2 corresponding to the through hole; the first step 11 of the push rod 1 abuts against the groove bottom 231 of the second groove 23 of the plunger.
The invention relates to an assembly method of a movable component of a high-voltage direct-current relay, which comprises the following steps:
a spring seat 42 is formed on the top of the push rod 1 in an injection molding mode;
a push rod 1 with a spring seat 42 sequentially penetrates through a yoke iron plate 41, a static iron core 43, a return spring 44 and a movable iron core 2 from top to bottom, the spring seat 42 is positioned on the yoke iron plate 41, and the static iron core 43 is matched in the yoke iron plate 41;
the downward step 11 arranged on the push rod 1 is abutted against the groove bottom 231 of the upper groove (i.e. the second groove) 23 of the movable iron core 2, and the return spring 44 is elastically tensioned between the static iron core 43 and the movable iron core 2, so that the bottom section 12 of the push rod 1 corresponds to the lower groove (i.e. the first groove) 22 of the movable iron core 2;
the stop piece 3 is formed by injection molding of an area surrounded by the bottom section 12 of the push rod 1 and the lower groove 22 of the movable iron core 2, the stop piece 3 is fixed between the push rod 1 and the movable iron core 2 in an injection molding mode, and the top end of the stop piece 3 abuts against the groove bottom 222 of the lower groove 22 to limit the downward movement of the movable iron core 2 relative to the push rod 1.
Furthermore, the groove wall (i.e. the side wall) 221 of the lower groove 22 of the plunger 2 is made into an inclined surface shape, and the inclined surface is gradually inclined outwards from the groove bottom 222 of the lower groove 22 to the opening direction of the lower groove, so that the side wall of the stopper 3 is made into a corresponding inclined surface shape.
The invention relates to a moving component of a high-voltage direct-current relay and an assembling method thereof.A polished rod at the middle part of the lower section of a push rod 1 is matched in a through hole 21 of a moving iron core 2, and a stop piece 3 made of plastic material is manufactured in a lower groove 22 of the moving iron core in an integrated forming mode to be used as a stop part for limiting the moving iron core 2 to move downwards relative to the push rod 1. According to the structure, the threaded connection is cancelled by using the polished rod for positioning, so that the problem of thread eccentricity can be effectively solved, and the problem that the rotation of the iron core in the X/Y direction cannot be effectively limited due to the clearance existing between the tops and the bottoms of the inner and outer threads is solved; the stop piece made of plastic materials stops and dispensing is cancelled, so that the defects of organic matters, cracking, generation of foreign matters and the like caused by dispensing can be avoided, the time required by dispensing and curing is shortened, and the production speed is further improved.
The invention relates to a movable component of a high-voltage direct-current relay and an assembly method thereof.A groove wall 221 of a lower groove 22 of a movable iron core 2 is made into an inclined plane shape, and the inclined plane is gradually inclined outwards from a groove bottom 222 of the lower groove 22 to the opening direction of the lower groove, so that the side wall of a stop part 3 is in a corresponding inclined plane shape. According to the structure, the longitudinal force borne in the Z direction can be decomposed by matching the inclined plane shape of the side wall of the stop piece with the inclined plane shape of the lower groove of the movable iron core.
The foregoing is considered as illustrative of the preferred embodiments of the 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 be limited thereto. Those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or equivalent modifications, without departing from the scope of the disclosed embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (8)
1. A movable component of a high-voltage direct-current relay comprises a push rod, a movable iron core and a stop piece made of plastic materials; a downward first step is arranged at the upper position of the lower section of the push rod, and the first step of the push rod abuts against the movable iron core; the movable iron core is provided with a through hole penetrating from top to bottom; the method is characterized in that: the polish rod at the middle part of the lower section of the push rod is matched in the through hole of the movable iron core; a first groove with a downward opening is arranged at the bottom of the movable iron core corresponding to the through hole, the side wall of the first groove is obliquely arranged, and the first groove is gradually inclined outwards from the bottom of the groove to the opening direction; the bottom section of the pushing rod corresponds to the first groove of the movable iron core, the stop piece is formed in an area surrounded by the first groove of the movable iron core and the bottom section of the pushing rod in an injection molding mode and used for fixing the pushing rod and the movable iron core, and the top end of the stop piece abuts against the bottom of the first groove to limit the movable iron core to move downwards relative to the pushing rod.
2. The high-voltage direct-current relay moving assembly according to claim 1, characterized in that: and a convex ring surrounding the circumferential surface of the push rod is also arranged in the bottom section of the push rod.
3. The high-voltage direct-current relay moving assembly according to claim 2, characterized in that: the convex rings of the push rod are one or a plurality of mutually spaced convex rings.
4. The high-voltage direct-current relay moving assembly according to claim 1, characterized in that: and an annular groove surrounding the circumferential surface of the push rod is also arranged in the bottom section of the push rod.
5. The high-voltage direct-current relay moving assembly according to claim 4, characterized in that: the annular grooves of the push rod are one or a plurality of grooves arranged at intervals.
6. The high-voltage direct-current relay moving assembly according to claim 1, characterized in that: a second groove with an upward opening is formed in the position, corresponding to the through hole, of the upper part of the movable iron core; and the first step of the push rod is abutted against the groove bottom of the second groove of the movable iron core.
7. A method for assembling a movable component of a high-voltage direct-current relay is characterized by comprising the following steps: the method comprises the following steps:
a spring seat is formed on the top of the push rod in an injection molding mode;
a pushing rod with a spring seat sequentially penetrates through the yoke iron plate, the static iron core, the return spring and the movable iron core from top to bottom, the spring seat is arranged on the yoke iron plate, and the static iron core is matched in the yoke iron plate;
the downward step arranged on the push rod is abutted against the groove bottom of the upper groove of the movable iron core, and the return spring is elastically tensioned between the static iron core and the movable iron core, so that the bottom section of the push rod is correspondingly arranged in the lower groove of the movable iron core;
the stop piece is formed by injection molding of an area defined by the bottom section of the push rod and the lower groove of the movable iron core, the stop piece is fixed between the push rod and the movable iron core in an injection molding mode, and the top end of the stop piece abuts against the groove bottom of the lower groove to limit the movable iron core to move downwards relative to the push rod.
8. The method for assembling the moving component of the high-voltage direct-current relay according to claim 7, wherein the method comprises the following steps: furthermore, the groove wall of the lower groove of the movable iron core is made into an inclined plane shape, and the inclined plane is gradually inclined outwards from the groove bottom of the lower groove to the opening direction of the lower groove, so that the side wall of the stop part is in a corresponding inclined plane shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111263909.2A CN114093719A (en) | 2021-10-27 | 2021-10-27 | Moving assembly of high-voltage direct-current relay and assembly method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111263909.2A CN114093719A (en) | 2021-10-27 | 2021-10-27 | Moving assembly of high-voltage direct-current relay and assembly method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114093719A true CN114093719A (en) | 2022-02-25 |
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ID=80298416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111263909.2A Pending CN114093719A (en) | 2021-10-27 | 2021-10-27 | Moving assembly of high-voltage direct-current relay and assembly method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114093719A (en) |
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2021
- 2021-10-27 CN CN202111263909.2A patent/CN114093719A/en active Pending
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