CN217158062U

CN217158062U - Direct-acting high-voltage direct-current relay

Info

Publication number: CN217158062U
Application number: CN202122598759.2U
Authority: CN
Inventors: 代文广; 陈松生; 谢丰柱
Original assignee: Xiamen Hongfa Electric Power Controls Co Ltd
Current assignee: Xiamen Hongfa Electric Power Controls Co Ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-08-09
Anticipated expiration: 2031-10-27

Abstract

The utility model discloses a direct-acting high-voltage direct-current relay, which comprises a push rod, a movable iron core and a copper sheet; the push rod polish rod is matched in the through hole of the movable iron core; the movable iron core is provided with a first groove with a downward opening; the copper sheet is sleeved outside the push rod and is matched in the first groove, and the top end of the copper sheet is abutted to the groove bottom of the first groove; the pushing rod is provided with a sunken part which is inwards sunken along the radial direction; the inner ring of the copper sheet is squeezed into the recessed part of the push rod in the first groove in a rivet expanding mode, and the outer ring of the copper sheet is tightly propped against the groove wall of the first groove. The utility model can effectively solve the problem of thread eccentricity by using the polished rod to position and canceling the threaded connection, and can solve the problem that the rotation of the iron core in the X/Y direction can not be effectively limited due to the clearance existing between the top and the bottom of the internal thread and the external thread; the stop piece is adopted to stop and dispense 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.

Description

Direct-acting high-voltage direct-current relay

Technical Field

The utility model relates to a relay technical field especially relates to a direct action type high voltage direct current relay.

Background

A high-voltage direct-current relay in the prior art adopts a movable spring direct-acting type (also called a solenoid direct-acting type) structure, a contact part of the direct-acting type high-voltage direct-current relay comprises two static contacts (namely load leading-out ends) and a movable component, the movable component comprises a movable spring part and a push rod component, the movable spring part is matched between the two static contacts in a bridge type and is arranged at the top of the push rod component, 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 component, 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 the movable iron core of catch bar and catch bar sub-unit connection (the spring holder in the catch bar subassembly is usually connected at the top of catch bar), through the cooperation of moving parts such as iron core and coil, quiet iron core, drives the catch bar reciprocating motion by moving the iron core, because move the iron core and 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.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a direct-acting high-voltage direct-current relay, through improving the connecting structure between a push rod and a movable iron core, the threaded connection is cancelled by using polished rod positioning, 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 top and the bottom of the teeth between the inner and the outer 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 utility model provides a technical scheme that its technical problem adopted is: a direct-acting high-voltage direct-current relay comprises a push rod, a movable iron core and a copper sheet; a downward step is arranged at the upper position of the lower section of the push rod, and the step of the push rod is abutted 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 formed in the position, corresponding to the through hole, of the bottom of the movable iron core; the copper sheet is sleeved outside the push rod and is matched in the first groove, and the top end of the copper sheet abuts against the groove bottom of the first groove; a concave part which is inwards concave along the radial direction is also arranged in the lower section of the push rod and at the position corresponding to the first groove; the inner ring of the copper sheet is squeezed into the recessed part of the push rod in the first groove through the expanding riveting mode, and the outer ring of the copper sheet is tightly propped against the groove wall of the first groove.

The sunken part of catch bar is the annular groove who sets up on the periphery wall of catch bar.

The sunken part of catch bar is the knurling structure of encircleing on the periphery wall of catch bar.

A second groove with a downward opening is further formed in the position, corresponding to the through hole, of the bottom of the movable iron core; the first groove is arranged in the second groove, the second groove is a big groove, and the first groove is a small groove.

A third 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 step of the push rod is abutted to the groove bottom of the third groove of the movable iron core.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model adopts the middle part polished rod of the lower section of the push rod to be matched in the through hole of the movable iron core and the copper sheet to be used as a stop part for limiting the downward movement of the movable iron core relative to the push rod, and the lower section of the push rod is also provided with a concave part which is inwards sunken along the radial direction at the position corresponding to the first groove; the copper sheet is sleeved outside the push rod and is matched in the first groove, and the top end of the copper sheet is abutted to the groove bottom of the first groove; the copper sheet is arranged in the first groove, the inner ring of the copper sheet is squeezed into the recessed part of the pushing rod in a rivet expanding mode, and the outer ring of the copper sheet is abutted against the groove wall of the first groove. The structure of the utility model can effectively solve the problem of thread eccentricity by using the polished rod to position and canceling the threaded connection, and can solve the problem that the rotation of the iron core in the X/Y direction can not be effectively limited due to the clearance existing between the top and the bottom between the inner thread and the outer thread; through adopting the sleeve to end the position and cancel the point and glue, not only can avoid the point to glue and bring the organic matter, fracture and produce defects such as foreign matter, reduce the required time of point solidification simultaneously, and then promote production speed.

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.

Drawings

Fig. 1 is a front view of a partial configuration of an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic illustration of a partially constructed exploded state of an embodiment of the invention;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 5 is an enlarged schematic view of section C of FIG. 4;

fig. 6 is an enlarged schematic view of a portion D in fig. 4.

Detailed Description

Examples

Referring to fig. 1 to 6, the direct-acting high-voltage direct-current relay of the present invention includes a push rod 1, a movable iron core 2 and a copper sheet 3; the high-voltage direct-current relay further comprises a yoke iron plate 41, a spring seat 42, a static iron core 43, a return spring 44 and the like, wherein the spring seat 42 is fixed at the top of the push rod 1, the spring seat 42 is positioned on the yoke iron plate 41, the spring seat 42 is usually connected with a fixing plate 45, the static iron core 43 is fixed below the yoke iron plate 41, the push rod 1 penetrates through the yoke iron plate 41 and the static iron core 43 from the upper surface of the yoke iron 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 downward step 11 is arranged at the upper position of the lower section of the push rod 1, and the step 11 of the push rod 1 is abutted against the movable iron core 2; 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 formed in the position, corresponding to the through hole, of the bottom of the movable iron core 2; the copper sheet 3 is sleeved outside the push rod 1 and is adapted in the first groove 22, and the top end of the copper sheet 3 is abutted to the groove bottom 221 of the first groove 22; in the lower section of the push rod 1, at a position corresponding to the inside of the first groove, there is also provided a recessed portion 12 recessed inward in the radial direction; the copper sheet 3 is in the first groove 22, by means of expanding riveting (applying an upward expanding riveting force with an arrow as shown in fig. 6), an inner ring of the copper sheet 3 is squeezed into the recess 12 of the push rod 1 along a horizontal direction (as indicated by the arrow in fig. 6), and an outer ring of the copper sheet 3 is abutted against a groove wall 222 of the first groove 22 along the horizontal direction (as indicated by the arrow in fig. 6).

In this embodiment, the recessed portion 12 of the push rod 1 is an annular groove provided on the outer peripheral wall of the push rod. Of course, the recessed portion of the push rod is a knurled structure surrounding the outer peripheral wall of the push rod.

In this embodiment, a second groove 23 with a downward opening is further formed at a position corresponding to the through hole at the bottom of the movable iron core 2; the first groove 22 is arranged in the second groove 23, the second groove 23 is a large groove, and the first groove 22 is a small groove.

In this embodiment, a third groove 24 with an upward opening is formed in the upper portion of the movable iron core 2 corresponding to the through hole; the step 11 of the push rod 1 abuts against the groove bottom 241 of the third groove 24 of the plunger 2. The third recess 24 is also used to fit a return spring 44.

The utility model discloses a direct-acting high-voltage direct-current relay, the middle part polished rod of the hypomere of the catch bar 1 is matched in the through hole 21 of the movable iron core 2 and the copper sheet 3 is used as the stop part for limiting the downward movement of the movable iron core 2 relative to the catch bar 1, and in the hypomere of the catch bar 1, at the position corresponding to the first groove 22 of the movable iron core 2, a concave part 12 which is inwards concave along the radial direction is also arranged; the copper sheets 3 are sleeved outside the push rod 1 and are adapted in the first groove 22, and the top ends of the copper sheets 3 are abutted against the groove bottom 221 of the first groove 22; the inner ring of the copper sheet 3 is squeezed into the recessed part 12 of the push rod in the first groove 22 in a rivet expanding mode, and the outer ring of the copper sheet 3 is tightly propped against the groove wall of the first groove 22. The structure of the utility model can effectively solve the problem of thread eccentricity by using the polished rod to position and canceling the threaded connection, and can solve the problem that the rotation of the iron core in the X/Y direction can not be effectively limited due to the clearance existing between the top and the bottom between the inner thread and the outer thread; the sleeve is adopted for stopping, so that the dispensing is cancelled, 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 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 be limited thereto. 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

1. A direct-acting high-voltage direct-current relay comprises a push rod, a movable iron core and a copper sheet; a downward step is arranged at the upper position of the lower section of the push rod, and the step of the push rod is abutted 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 formed in the position, corresponding to the through hole, of the bottom of the movable iron core; the copper sheet is sleeved outside the push rod and is matched in the first groove, and the top end of the copper sheet abuts against the groove bottom of the first groove; a concave part which is inwards concave along the radial direction is also arranged in the lower section of the push rod and at the position corresponding to the first groove; the inner ring of the copper sheet is squeezed into the recessed part of the push rod in the first groove through the expanding riveting mode, and the outer ring of the copper sheet is tightly propped against the groove wall of the first groove.

2. The direct-acting high-voltage direct-current relay according to claim 1, characterized in that: the sunken part of catch bar is the annular groove who sets up on the periphery wall of catch bar.

3. The direct-acting high-voltage direct-current relay according to claim 1, characterized in that: the sunken part of catch bar is the knurling structure of encircleing on the periphery wall of catch bar.

4. The direct-acting high-voltage direct-current relay according to claim 1, characterized in that: a second groove with a downward opening is further formed in the position, corresponding to the through hole, of the bottom of the movable iron core; the first groove is arranged in the second groove, the second groove is a big groove, and the first groove is a small groove.

5. The direct-acting high-voltage direct-current relay according to claim 1, characterized in that: a third 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 step of the push rod is abutted to the groove bottom of the third groove of the movable iron core.