CN210575743U - Cross-group double-loop magnetic latching relay - Google Patents
Cross-group double-loop magnetic latching relay Download PDFInfo
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- CN210575743U CN210575743U CN201921700456.3U CN201921700456U CN210575743U CN 210575743 U CN210575743 U CN 210575743U CN 201921700456 U CN201921700456 U CN 201921700456U CN 210575743 U CN210575743 U CN 210575743U
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- pin
- latching relay
- cross
- magnetic latching
- elastic sheet
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Abstract
The utility model relates to a cross group's double circuit magnetic latching relay, include: the pin assembly comprises a first pin, a second pin, a third pin and a fourth pin; one end of the second pin is far away from the first pin; the third pin and the fourth pin are arranged between the first pin and the second pin; the first pin, the second pin, the third pin and the fourth pin are arranged in an asymmetric mode; the driving assembly comprises a push sheet, the push sheet is connected with the first elastic sheet and the second elastic sheet, and the push sheet is also used for abutting against the reset elastic sheet. The cross-group double-loop magnetic latching relay is simple in structure, one end of the second pin is far away from the first pin, and the third pin and the fourth pin are located between the first pin and the second pin, so that the first pin, the second pin, the third pin and the fourth pin are arranged in an asymmetrical mode, the cross-group double-loop magnetic latching relay is convenient to adapt to an ammeter in an asymmetrical wiring mode, and the compactness and the convenience of internal wiring are improved.
Description
Technical Field
The utility model relates to a relay technical field especially relates to a cross group double circuit magnetic latching relay.
Background
The magnetic latching relay is a new type relay developed in recent years, is an automatic switch, and has the same function of automatically switching on and off a circuit as other electromagnetic relays. The magnetic latching relay has the advantages that the normally closed state or the normally open state of the magnetic latching relay completely depends on the action of permanent magnetic steel, and the switching state of the magnetic latching relay is triggered by pulse electric signals with certain width to complete the switching.
Two groups of contacts of a common double-loop magnetic latching relay are designed in a symmetrical mode, and the design mode is convenient to install for an electric meter with a symmetrical structure. However, for the electric meter adopting the jumper connection mode which is popular in the market at present, the symmetrical double-loop magnetic latching relay is large in size, the problem that wiring is messy and not compact is easily caused in installation, and the cost performance of the electric meter is greatly reduced.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model provides a two return circuits magnetic latching relay of group strides, simple structure has asymmetric contact pin, is applicable to the ammeter of cross-over connection formula wiring mode more.
In order to realize the content of the utility model, the utility model adopts the following technical scheme:
a cross-group dual-loop magnetic latching relay comprising:
a pin assembly; the pin assembly comprises a first pin, a second pin, a third pin and a fourth pin which are arranged at intervals; one end of the second pin is far away from the first pin; the third pin and the fourth pin are arranged between the first pin and the second pin; the first pin, the second pin, the third pin and the fourth pin are arranged in an asymmetric manner; one surface of the first pin, which is close to the second pin, is provided with a first elastic sheet, and the first elastic sheet is used for abutting against the second pin; one surface of the third pin, which is close to the fourth pin, is provided with a second elastic sheet, and the second elastic sheet is used for abutting against the fourth pin; one surface of the third pin, which is close to the fourth pin, is also provided with a reset elastic sheet; and
the driving component is used for connecting the pin component; the driving assembly comprises a push sheet, the push sheet is connected with the first elastic sheet and the second elastic sheet, and the push sheet is also used for abutting against the reset elastic sheet.
The cross-group double-loop magnetic latching relay is simple in structure, one end of the second pin is far away from the first pin, and the third pin and the fourth pin are located between the first pin and the second pin, so that the first pin, the second pin, the third pin and the fourth pin are arranged in an asymmetrical mode, the cross-group double-loop magnetic latching relay is convenient to adapt to an ammeter in an asymmetrical wiring mode, and the compactness and the convenience of internal wiring are improved.
In one embodiment, the group-spanning double-loop magnetic latching relay further comprises a magnetic circuit assembly, and the magnetic circuit assembly is connected with the driving assembly; the magnetic circuit component comprises a coil rack and yoke irons connected to two opposite ends of the coil rack; the yoke iron is provided with bending parts, and the bending parts of the two yoke irons are oppositely arranged.
In one embodiment, the driving assembly further comprises a permanent magnet piece connected with the push plate; the permanent magnet piece is positioned on one side of the coil rack, and the opposite two ends of the permanent magnet piece are connected with the yoke iron; and one surface of the permanent magnetic piece, which faces away from the coil rack, is connected with an adapter part, and the adapter part is used for connecting the push sheet.
In one embodiment, the push sheet comprises a substrate, a first protruding part and a second protruding part which are connected with one end of the substrate, and a clamping part which is connected with the other end of the substrate; the substrate is located on one side of the pin assembly, the first protruding portion is located between the first pin and the second pin, the second protruding portion is located between the third pin and the fourth pin support, and the clamping portion corresponds to the switching portion.
In one embodiment, the first protrusion is provided with a first groove, and the first groove is used for accommodating the first elastic sheet; the second protruding part is provided with a second groove, and the second groove is used for accommodating the second elastic sheet.
In one embodiment, the permanent magnet piece comprises an insulating base, and magnetic pole pieces connected to two opposite end faces of the insulating base; the magnetic pole piece is clamped with a bending part connected with the yoke.
In one embodiment, the cross-set dual-loop magnetic latching relay further comprises a housing and a cover; the shell is used for accommodating and mounting the pin assembly and the magnetic circuit assembly; the shell comprises a shell body, and a first through hole is formed in the shell body; the sealing cover is connected with the shell, and is provided with a second through hole corresponding to the first through hole; the two opposite side surfaces of the permanent magnet piece are respectively connected with a pivot part, and the pivot parts respectively penetrate through the first through hole and the second through hole.
In one embodiment, a side wall of the housing is provided with a first notch and a second notch at intervals, the first notch does not penetrate through the side wall of the housing, and the second notch penetrates through the side wall of the housing; the first pin is accommodated in the first notch at one end of the shell, two opposite ends of the second pin are respectively accommodated in the second notch, and the third pin and the fourth pin are both accommodated in the second notch.
In one embodiment, the second pins are provided with assembling holes at intervals, the assembling holes are used for installing protective covers, and the protective covers cover the second pins; and positioning columns are convexly arranged on one surface of the protective cover facing the second pins at intervals, and the positioning columns are correspondingly inserted into the assembling holes.
In one embodiment, the second pin is disposed in a U shape.
Drawings
Fig. 1 is a schematic perspective view of a cross-group dual-loop magnetic latching relay according to an embodiment of the present invention;
fig. 2 is a perspective view of the cross-group dual-loop magnetic latching relay shown in fig. 1 from another perspective;
FIG. 3 is an exploded schematic view of the cross-bank dual-loop magnetic latching relay shown in FIG. 1;
FIG. 4 is an exploded view from another perspective of the cross-group dual-loop latching relay of FIG. 3;
fig. 5 is an internal structural view of the cross-group dual-circuit magnetic latching relay shown in fig. 1;
fig. 6 is a schematic perspective view of a housing in the cross-group dual-loop magnetic latching relay shown in fig. 1;
fig. 7 is a perspective view of another perspective view of a housing in the cross-group dual-loop magnetic latching relay shown in fig. 6;
fig. 8 is an assembly diagram of a pin assembly, a magnetic circuit assembly and a driving assembly in the cross-group dual-loop magnetic latching relay shown in fig. 1;
fig. 9 is an assembly view of the pin assembly, the magnetic circuit assembly and the driving assembly of the cross-set dual-circuit magnetic latching relay shown in fig. 8 from another perspective;
fig. 10 is a schematic perspective view of a permanent magnet piece in the cross-group dual-loop magnetic latching relay shown in fig. 8;
fig. 11 is a schematic perspective view of a push plate in the cross-group dual-loop magnetic latching relay shown in fig. 8;
fig. 12 is a schematic perspective view of a second pin of the cross-group dual-circuit magnetic latching relay shown in fig. 8;
fig. 13 is a schematic perspective view of a third pin in the group-crossing dual-circuit magnetic latching relay shown in fig. 8.
Reference is made to the accompanying drawings in which:
10-shell, 11-shell, 12-cover plate, 13-partition plate, 14-containing cavity, 15-first through hole, 16-butt joint hole, 171-first notch, 172-second notch, 18-convex tooth, 19-retaining ring;
20-pin assembly, 21-first pin, 210-first elastic sheet, 22-second pin, 23-third pin, 230-second elastic sheet, 24-fourth pin, 25-assembly hole, 26-protective cover, 27-positioning column and 28-reset elastic sheet;
30-magnetic circuit component, 31-coil rack, 32-yoke iron;
40-a driving component, 41-a permanent magnet piece, 411-an insulating base, 412-a magnetic pole piece, 42-a pushing piece, 43-a pivot part, 44-an adapter part, 45-a substrate, 46-a first protrusion part, 460-a first groove, 47-a second protrusion part, 470-a second groove and 48-a clamping part;
50-cover, 51-baffle, 52-pair of feet, 53-second through hole.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1 to 13, a cross-group dual-loop magnetic latching relay according to an embodiment of the present invention is adapted to an electricity meter with an asymmetric connection mode. The cross-group double-loop magnetic latching relay comprises a shell 10, a pin component 20 and a magnetic circuit component 30 which are installed in the shell 10, and a driving component 40 which is used for connecting the pin component 20 and the magnetic circuit component 30.
As shown in fig. 6 and 7, the housing 10 includes a housing 11 and a cover 12 coupled to the housing 11. The housing 11 has two partitions 13 therein at intervals to partition the interior of the housing 11 into an accommodation chamber 14, a first disposition chamber, and a second disposition chamber. First through-hole 15 has been seted up in the chamber 14 is held to correspondence on the casing 11, still has seted up respectively in the chamber 14 is held to correspondence on the casing 11 and has docked hole 16, and docked hole 16 is located one side of first through-hole 15.
In this embodiment, a sidewall of the housing 11 is provided with a first notch 171 and a second notch 172 at an interval, the first notch 171 does not penetrate through the sidewall of the housing 11, and the second notch 172 penetrates through the sidewall of the housing 11; the first and second notches 171 and 172 are used for accommodating the pin assembly 20.
A plurality of convex teeth 18 are convexly arranged on the periphery of the shell 11 at intervals, a plurality of retaining rings 19 are connected on the periphery of the cover plate 12 at intervals, and the retaining rings 19 correspond to the convex teeth 18 so as to realize the mutual buckling of the cover plate 12 and the shell 11.
The pin assembly 20 comprises a first pin 21, a second pin 22, a third pin 23 and a fourth pin 24 which are arranged at intervals; the first leg 21 is adapted to abut the second leg 22 and the third leg 23 is adapted to abut the fourth leg 24. The first pin 21 and the third pin 23 are used as input terminals, and the second pin 22 and the fourth pin 24 are used as output terminals. In other embodiments, the first pin 21 and the third pin 23 are used as output terminals, and the second pin 22 and the fourth pin 24 are used as input terminals.
In this embodiment, one ends of the first pin 21 and the second pin 22 are installed in the first installation cavity, and the first pin 21 is accommodated in the first notch 171 at one end of the housing 11; the second pins 22 are substantially U-shaped, and the two opposite ends of the second pins 22 are respectively accommodated in the second notches 172, so that when the assembly is performed, the two opposite ends of the second pins 22 are inserted into the second notches 172 from the back of the housing 11, the internal structure design of the housing 11 can be relatively reduced, and the miniaturization of the overall structure is facilitated. The third pin 23 and the fourth pin 24 are mounted in the second mounting cavity, and the third pin 23 and the fourth pin 24 are both accommodated in the first notch 171. Further, in order to better improve the sealing performance and the safety of the structure, the second pin 22 is provided with assembling holes 25 at intervals, the assembling holes 25 are used for positioning and installing the protective cover 26, specifically, the surface of the protective cover 26 facing the second pin 22 is provided with positioning posts 27 at intervals, and the positioning posts 27 are correspondingly inserted into the assembling holes 25, so that the protective cover 26 covers the second pin 22, and the second pin 22 can be prevented from being exposed.
As can be seen from fig. 1 and fig. 2, the first pin 21 and the second pin 22 are installed at two opposite ends of the housing 11, one end of the second pin 22 is far away from the first pin 22, and the third pin 23 and the fourth pin 24 are located between the first pin 21 and the second pin 22, so that the first pin 21, the second pin 22, the third pin 23 and the fourth pin 24 are asymmetrically arranged, which is more convenient for adapting to an electricity meter with an asymmetric connection manner, and improves the compactness and convenience of internal wiring.
In this embodiment, a first elastic sheet 210 is disposed on a surface of the first lead 21 close to the second lead 22, the first elastic sheet 210 is elastically disposed, and the first elastic sheet 210 is used for abutting against the second lead 22 to achieve electrical communication between the first lead 21 and the second lead 22. Furthermore, the first elastic sheet 210 has a contact, the end of the second pin 22 close to the first elastic sheet 210 has a contact, and the contact of the first elastic sheet 210 correspondingly abuts against the contact of the second pin 22. As shown in fig. 13, in the present embodiment, a second elastic sheet 230 is disposed on a surface of the third pin 23 close to the fourth pin 24, the second elastic sheet 230 has an elastic configuration, and the second elastic sheet 230 is used for abutting against the fourth pin 24 to realize electrical communication between the third pin 23 and the fourth pin 24. Further, the second spring plate 230 has a contact, the fourth pin 24 has a contact, and the contact of the second spring plate 230 is correspondingly abutted against the contact of the fourth pin 24. The third pin 23 is further provided with a reset spring 28 on a surface close to the fourth pin 24, and the reset spring 28 is used for abutting against the driving assembly 40 to push the driving assembly 40 to reset.
The magnetic circuit assembly 30 is installed in the accommodating chamber 14, and the magnetic circuit assembly 30 includes a coil frame 31 and yokes 32 connected to opposite ends of the coil frame 31. In the present embodiment, the yoke 32 is substantially L-shaped, the yoke 32 has a bent portion, the bent portion is close to the first notch 171, and the bent portions of the two yokes 32 are disposed opposite to each other.
The driving assembly 40 includes a permanent magnet 41 and a pushing piece 42 connected to the permanent magnet 41. The permanent magnet 41 is installed in the accommodating cavity 14, two opposite side surfaces of the permanent magnet 41 are respectively connected with a pivot portion 43, and the pivot portions 43 correspondingly penetrate through the first through holes 15, so that the permanent magnet 41 is pivoted with the housing 11. The permanent magnet 41 is located at one side of the coil bobbin 31, and opposite ends of the permanent magnet 41 are connected to the yoke 32. Further, an adapter 44 is connected to a side of the permanent magnet 41 facing away from the coil frame 31, and the adapter 44 is used for connecting the push plate 42 to drive the push plate 42 to move. The push plate 42 includes a base plate 45, a first protrusion 46 and a second protrusion 47 connected to one end of the base plate 45, and a latch 48 connected to the other end of the base plate 45. The substrate 45 is located on one side of the pin assembly 20, the first protrusion 46 is located between the first pin 21 and the second pin 22, the second protrusion 47 is located between the third pin 23 and the fourth pin 24, and the latch 48 corresponds to the adapter 44.
Further, the first protrusion 46 is provided with a first groove 460, and the first groove 460 is used for accommodating the first elastic piece 210 so as to drive the first elastic piece 210 to approach or depart from the second pin 22; the second protrusion 47 has a second groove 470, and the second groove 470 is used for accommodating the second resilient tab 230 to drive the second resilient tab 230 to approach or depart from the fourth pin 24. The second projection 47 is also used to abut the reset spring 28.
In an initial state, that is, when the magnetic circuit assembly 30 and the driving assembly 40 do not work, the first elastic sheet 210 abuts against the second pin 22, and the second elastic sheet 230 abuts against the fourth pin 24, so as to ensure the electrical communication between the first pin 21 and the second pin 22 and the electrical communication between the third pin 23 and the fourth pin 24. When the magnetic circuit assembly 30 is powered on, the driving assembly 40 works, the push plate 42 drives the first elastic sheet 210 to be away from the second pin 22, the push plate 42 drives the second elastic sheet 230 to be away from the fourth pin 24, and a loop between the first pin 21 and the second pin 22 and a loop between the third pin 23 and the fourth pin 24 are disconnected. When the magnetic circuit assembly 30 is powered off, the driving assembly 40 does not operate, the push plate 42 returns to the original position under the action of the reset elastic sheet 28, the first elastic sheet 210 abuts against the second pin 22 again, and the second elastic sheet 230 abuts against the fourth pin 24 again.
As shown in fig. 10, in the present embodiment, the permanent magnet 41 includes an insulating base 411, and pole pieces 412 connected to opposite end faces of the insulating base 411; the pole piece 412 is clamped with the bending part connected with the yoke 32. The pivot portions 43 are connected to opposite sides of the insulating base 411, and the adapter portions 43 are connected to a surface of the insulating base 411 facing away from the bobbin 31.
Still further, in order to improve the installation stability of the permanent magnet 41, the group-spanning dual-loop magnetic latching relay further includes a cover 50 connected to the housing 11, where the cover 50 includes a baffle 51 and two butt pins 52 connected to two opposite ends of the baffle 51; the docking legs 52 are correspondingly inserted into the docking holes 16. The baffle 51 is provided with a second through hole 53, the second through hole 53 corresponds to the first through hole 15, and the pivot parts 43 on the two opposite side surfaces of the permanent magnet 41 respectively penetrate through the first through hole 15 and the second through hole 53, so that the permanent magnet 41 is better pivoted between the shell 11 and the sealing cover 50, and the stability is improved.
The cross-group double-loop magnetic latching relay is simple in structure, one end of the second pin 22 is far away from the first pin 22, the third pin 23 and the fourth pin 24 are located between the first pin 21 and the second pin 22, so that the first pin 21, the second pin 22, the third pin 23 and the fourth pin 24 are arranged in an asymmetrical mode, the cross-group double-loop magnetic latching relay is convenient to adapt to an ammeter in an asymmetrical wiring mode, and the compactness and the convenience of internal wiring are improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A cross-group dual-loop magnetic latching relay, comprising:
a pin assembly; the pin assembly comprises a first pin, a second pin, a third pin and a fourth pin which are arranged at intervals; one end of the second pin is far away from the first pin; the third pin and the fourth pin are arranged between the first pin and the second pin; the first pin, the second pin, the third pin and the fourth pin are arranged in an asymmetric manner; one surface of the first pin, which is close to the second pin, is provided with a first elastic sheet, and the first elastic sheet is used for abutting against the second pin; one surface of the third pin, which is close to the fourth pin, is provided with a second elastic sheet, and the second elastic sheet is used for abutting against the fourth pin; one surface of the third pin, which is close to the fourth pin, is also provided with a reset elastic sheet; and
the driving component is used for connecting the pin component; the driving assembly comprises a push sheet, the push sheet is connected with the first elastic sheet and the second elastic sheet, and the push sheet is also used for abutting against the reset elastic sheet.
2. The cross-group dual-loop magnetic latching relay according to claim 1, further comprising a magnetic circuit assembly connected to the driving assembly; the magnetic circuit component comprises a coil rack and yoke irons connected to two opposite ends of the coil rack; the yoke iron is provided with bending parts, and the bending parts of the two yoke irons are oppositely arranged.
3. The cross-group dual-circuit magnetic latching relay according to claim 2, wherein the driving assembly further comprises a permanent magnet connected to the push plate; the permanent magnet piece is positioned on one side of the coil rack, and the opposite two ends of the permanent magnet piece are connected with the yoke iron; and one surface of the permanent magnetic piece, which faces away from the coil rack, is connected with an adapter part, and the adapter part is used for connecting the push sheet.
4. The cross-group double-loop magnetic latching relay according to claim 3, wherein the push plate comprises a substrate, a first protrusion and a second protrusion connected to one end of the substrate, and a latch connected to the other end of the substrate; the substrate is located on one side of the pin assembly, the first protruding portion is located between the first pin and the second pin, the second protruding portion is located between the third pin and the fourth pin support, and the clamping portion corresponds to the switching portion.
5. The cross-group double-loop magnetic latching relay according to claim 4, wherein the first protrusion is provided with a first groove for accommodating the first spring plate; the second protruding part is provided with a second groove, and the second groove is used for accommodating the second elastic sheet.
6. The cross-group dual-loop magnetic latching relay according to claim 3, wherein said permanent magnetic member comprises an insulating base, pole pieces connected to opposite end faces of said insulating base; the magnetic pole piece is clamped with a bending part connected with the yoke.
7. The cross-group dual-loop magnetic latching relay according to claim 3, further comprising a housing and a cover; the shell is used for accommodating and mounting the pin assembly and the magnetic circuit assembly; the shell comprises a shell body, and a first through hole is formed in the shell body; the sealing cover is connected with the shell, and is provided with a second through hole corresponding to the first through hole; the two opposite side surfaces of the permanent magnet piece are respectively connected with a pivot part, and the pivot parts respectively penetrate through the first through hole and the second through hole.
8. The cross-group double-loop magnetic latching relay according to claim 7, wherein a sidewall of the housing is provided with a first notch and a second notch at a distance, the first notch does not penetrate through the sidewall of the housing, and the second notch penetrates through the sidewall of the housing; the first pin is accommodated in the first notch at one end of the shell, two opposite ends of the second pin are respectively accommodated in the second notch, and the third pin and the fourth pin are both accommodated in the second notch.
9. The cross-group double-loop magnetic latching relay according to claim 1, wherein the second pins are spaced apart from each other by an assembly hole, the assembly hole is used for mounting a protective cover, and the protective cover covers the second pins; and positioning columns are convexly arranged on one surface of the protective cover facing the second pins at intervals, and the positioning columns are correspondingly inserted into the assembling holes.
10. The cross-group dual-loop magnetic latching relay according to claim 1, wherein the second pin is U-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921700456.3U CN210575743U (en) | 2019-10-09 | 2019-10-09 | Cross-group double-loop magnetic latching relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921700456.3U CN210575743U (en) | 2019-10-09 | 2019-10-09 | Cross-group double-loop magnetic latching relay |
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| Publication Number | Publication Date |
|---|---|
| CN210575743U true CN210575743U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921700456.3U Expired - Fee Related CN210575743U (en) | 2019-10-09 | 2019-10-09 | Cross-group double-loop magnetic latching relay |
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| Country | Link |
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| CN (1) | CN210575743U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110706980A (en) * | 2019-10-09 | 2020-01-17 | 广东高登智能电力有限公司 | Cross-group double-loop magnetic latching relay |
-
2019
- 2019-10-09 CN CN201921700456.3U patent/CN210575743U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110706980A (en) * | 2019-10-09 | 2020-01-17 | 广东高登智能电力有限公司 | Cross-group double-loop magnetic latching relay |
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| CF01 | Termination of patent right due to non-payment of annual fee |