CN211598105U - Safety module on power grid metering terminal - Google Patents
Safety module on power grid metering terminal Download PDFInfo
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- CN211598105U CN211598105U CN202020079937.3U CN202020079937U CN211598105U CN 211598105 U CN211598105 U CN 211598105U CN 202020079937 U CN202020079937 U CN 202020079937U CN 211598105 U CN211598105 U CN 211598105U
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Abstract
The utility model discloses a security module on electric wire netting measurement terminal, including lock body and controller, the lock body includes the casing, the middle part of casing right-hand member is equipped with the spring bolt opening, the casing includes last casing and lower casing through the screw connection. The novel electric lock is characterized in that an electric unlocking mechanism and a locking mechanism are arranged inside the shell, the electric unlocking mechanism comprises a micro switch and an electric driving mechanism, the locking mechanism is provided with convex teeth for controlling the micro switch, and the controller is located outside the lock body and is respectively electrically connected with the micro switch and the electric driving mechanism. The utility model discloses the mechanism is simple, and spare part is few, and less spare part not only can weight reduction, and reduce cost can reduce the probability that the trouble takes place moreover, lets safety module's operation more reliable.
Description
Technical Field
The utility model relates to a safety module for electric wire netting measurement terminal.
Background
At present, the safety devices used on the electric meter metering box and the modularized sensing terminal are mainly electronic locks.
Most of electronic locks in the prior art are complex in structure, multiple in parts, heavy in weight, high in failure rate, inconvenient to install and use, high in production cost and incapable of meeting the use requirements of a power grid metering terminal.
If a Chinese utility model patent document with the application number of CN201821635820.8 and the name of Motor hasp lock discloses a motor hasp lock, a spring bolt at the opening of the spring bolt at one side of a box seat of the hasp lock is provided with a second torsion spring, one end of the spring bolt is provided with a U-shaped lock groove, the length of the inner side end of the lock groove is larger than that of the outer side end, one end of a hasp below the inner side end of the lock groove at the other end of the spring bolt is abutted against the spring bolt, and a triggering sheet of a first micro switch is abutted against the top end of the inner side end of the spring bolt; the connecting plate below the other end of the lock catch is abutted to the lock catch, the lock catch which is swung and hinged to the box base is provided with a first torsion spring, three protruding columns are arranged on the circular face on one side of a second gear of the gear assembly, one of the protruding columns is abutted to the connecting plate, one of the protruding columns corresponding to the bottom of the gear assembly is abutted to a trigger piece of a third micro switch, a worm of a motor shaft is meshed with a fourth gear, and a contact column head extending out in an L shape on one side of the first micro switch of the support rod is abutted to a trigger piece of the second micro switch, so that signals of the support rod are more accurate. However, the motor hasp lock is provided with a plurality of springs, a microswitch and a gear set, so that the motor hasp lock is complex in mechanism, heavy in weight and high in cost, and cannot meet the requirements of lightness, small size and high reliability of a power grid metering terminal.
SUMMERY OF THE UTILITY MODEL
The utility model provides a security module on electric wire netting measurement terminal, its purpose: the structure of the power grid metering terminal safety module is simplified, the weight is reduced, the production cost is reduced, and the reliability is improved.
The utility model discloses technical scheme as follows:
a safety module on a power grid metering terminal comprises a lock body, a lock catch piece and a controller, wherein the lock body is installed on a box body of the metering terminal, the lock catch piece is installed on a box door of the metering terminal, or the lock body is installed on the box door of the metering terminal, and the lock catch piece is installed on the box body of the metering terminal;
the lock body comprises a shell, and a locking mechanism and an electric unlocking mechanism are arranged in the shell;
the lock catch mechanism comprises a lock tongue arranged at a lock tongue opening on the shell, and the lock tongue is used for being matched with the lock catch piece to realize locking;
the electric unlocking mechanism comprises a microswitch and an electric driving mechanism;
the electric driving mechanism is used for driving the lock tongue to act;
the microswitch is fixed in the shell and used for detecting the switch state;
the controller is respectively electrically connected with the micro switch and the electric drive mechanism.
As a further improvement of the above security module: the electric driving mechanism comprises a direct current speed reducing motor and a dragging buckle; the direct current speed reducing motor is arranged on the left side of the microswitch, and an output shaft is connected with an eccentric shaft; the dragging buckle comprises a middle main body, a first shifting lever and a second shifting lever, wherein the first shifting lever and the second shifting lever are respectively positioned on the upper side and the lower side of the main body; the front end and the rear end of the middle main body are respectively positioned in a first slotted hole and a second slotted hole on the shell so as to realize up-and-down movement relative to the shell; the output end of the eccentric shaft is positioned between the second driving lever and the middle main body and is used for driving the dragging buckle under the driving of the direct-current speed reducing motor; one end of the locking mechanism is positioned between the first driving lever and the middle main body and acts under the driving of the dragging buckle; the controller is electrically connected with the direct current speed reducing motor.
As a further improvement of the above security module: the locking mechanism further comprises a first torsion spring, a second torsion spring and a locking block; the first torsion spring and the locking block are hinged with the shell; one end of the first torsion spring is abutted against the first end of the locking part of the locking block, and the other end of the first torsion spring is abutted against the shell; the locking block further comprises a limiting part integrally formed with the locking part, and the free end of the limiting part is located between the middle main body and the first shifting lever;
the free end of the locking part is provided with a limit buckle matched with the lock tongue;
the spring bolt and the second torsion spring are hinged with the shell, the first end of the second torsion spring is abutted against the convex teeth on the outer side of the spring bolt, and the second end of the second torsion spring is abutted against the spring door strength adjusting component arranged on the shell; the middle part of the lock tongue is provided with a lock groove, and the lock groove corresponds to the position of the opening of the lock tongue;
the second torsion spring is used for driving the lock tongue to rotate and leave the lock tongue opening to realize unlocking, and the first torsion spring is used for driving the limiting part of the locking block to block one side of the lock tongue and prevent the lock tongue from rotating and unlocking; the other side of the lock tongue is provided with an arc surface which is used for pushing the limiting part open when the lock tongue rotates in the direction opposite to the unlocking direction so that the limiting part hooks the lock tongue after passing over the end part of the lock tongue to realize locking;
the spring bolt is also provided with a convex tooth for touching the microswitch.
As a further improvement of the above security module: the spring door strength adjusting assembly comprises a first adjusting piece and a second adjusting piece, the distance between the first adjusting piece and the micro switch is smaller than the distance between the second adjusting piece and the micro switch, and the second end of the second torsion spring can be abutted to any one of the first adjusting piece and the second adjusting piece.
As a further improvement of the above security module: the shell is provided with a first through hole, and the first through hole is located above the bolt opening.
As a further improvement of the above security module: a second through hole is formed in the position, matched with the microswitch, of the shell, a supporting plate is arranged on one side wall of the second through hole, and the supporting plate abuts against the microswitch.
As a further improvement of the above security module: the lock catch piece comprises a U-shaped lock catch fixedly connected to the connecting plate, and the connecting plate is connected with the mounting plate through a screw; the U-shaped lock catch is used for being matched with the lock tongue.
As a further improvement of the above security module: the shell is also connected with a connecting piece through a screw.
Compared with the prior art, the utility model discloses following beneficial effect has: (1) compared with the traditional electronic lock, the electronic lock has the advantages that the mechanism is simple, the number of parts is small, the weight and the cost can be reduced due to the few parts, the probability of failure can be reduced, and the operation of the safety module is more reliable; (2) the utility model can also adjust the force between the lock tongue and the lock block through the first adjusting piece and the second adjusting piece, and the use is more flexible; (3) the internal space of the lockset is compactly arranged, the volume is smaller, and the lockset is convenient to install and use on a metering device.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a front view of the internal structure of the lock body of the present invention.
Fig. 4 is a rear view of the internal structure of the lock body of the present invention.
Fig. 5 is a schematic structural view of the drag buckle of the present invention.
Fig. 6 is a schematic view of the internal structure of the upper housing of the present invention.
In the figure, 1, an upper shell, 2, a lower shell, 3, a connecting piece, 4, a first notch, 5, a first screw hole, 6, a first through hole, 7, a bolt opening, 8, a second screw hole, 9, a second through hole, 10, a third screw hole, 11, a first slotted hole, 12, a round hole, 13, a lock catch, 14, a connecting plate, 15, a mounting plate, 16, a screw column, 17, a screw hole, 18, a third through hole, 19, a second slotted hole, 20, a locking block, 21, a limiting part, 22, a locking part, 23, a hinge part, 24, a first screw seat, 25, a first torsion spring, 26, a bolt, 27, an inner convex tooth, 28, an outer convex tooth, 29, a locking groove, 30, a second screw seat, 31, a second torsion spring, 32, a door springing force adjusting component, 33, a first adjusting piece, 34, a second adjusting piece, 35, a reed, 36, a micro switch, 37, a direct current motor, 38, an eccentric shaft, 39. a third screw seat 40, a dragging buckle 41, a first deflector rod 42, a middle main body 43, a second deflector rod 44 and a support plate.
Detailed Description
The technical scheme of the utility model is explained in detail below with the attached drawings:
referring to fig. 1, an electronic lock used as a security module on a power grid metering terminal comprises a lock body, a locking fastener and a controller. The lock body is arranged on the box body of the metering terminal, and the lock catch piece is arranged on the box door.
The lock body comprises a shell, the whole shell is square and consists of an upper shell 1 and a lower shell 2. Chamfers are arranged at two corners of the left end of the shell; the middle part of the right end of the shell is provided with a U-shaped bolt opening 7, the left end of the shell is provided with a round hole 12, and the upper left corner of the shell is provided with a first notch 4. The first notch 4 is used for manually opening the lock.
As shown in fig. 2, a third through hole 18 is provided above the latch opening 7 in the lower case 2. The third through hole 18 is oblong.
As shown in fig. 2 and 3, a first screw seat 24 is provided on the left side of the third through-hole 18. The lower housing 2 is provided with a second screw seat 30 below the bolt opening 7. The lower left corner of the lower shell 2 is provided with a third screw seat 39, and the left end of the lower shell 2 is provided with a rectangular second slot hole 19 opposite to the bolt opening 7. The outside of the lower case 2 is connected with a U-shaped connector 3 by screws.
As shown in fig. 3 and 6, the upper case 1 is provided with a first through hole 6, a first slot hole 11, a first screw hole 5, a second screw hole 8, and a third screw hole 10 corresponding to the third through hole 18, the second slot hole 19, the first screw seat 24, the second screw seat 30, and the third screw seat 39, respectively.
As shown in fig. 6, the upper housing 1 is further provided with a second through hole 9 having a rectangular shape, and a support plate 44 extending into the housing is provided on a left side wall of the second through hole 9. The supporting plate 44 is integrally formed with the upper case 1, i.e. cut by the upper case 1 and folded inwards to form the second through hole 9 and the supporting plate 44.
As shown in fig. 1 and 2, the first through hole 6 and the third through hole 18 are used for observing the locking state of the internal structure of the lock body and for adding solid grease to the lock body. The round hole 12 is a passage for the lead and signal transmission connecting wire to pass in and out, and the first notch 4 is used for manual unlocking.
An electric unlocking mechanism and a locking mechanism are arranged in the shell. The electric unlocking mechanism is arranged on one side of the locking mechanism. As shown in fig. 3, 4 and 6, the electrical unlocking mechanism includes a microswitch 36 and an electrical drive mechanism. The microswitch 36 is fixedly connected with a limit column in the lower shell 2 and is fixed in the shell by matching with the support plate 44, namely the support plate 44 is propped against the microswitch 36. The latch mechanism is provided with a protruding tooth which is used for pushing the reed 35 of the microswitch 36, so that the microswitch 36 senses the switch state of the latch mechanism.
The electric drive mechanism includes a dc gear motor 37 and a tow clasp 40. The direct current gear motor 37 is pressed on the right side of the microswitch 36, and the output shaft thereof is fixedly connected with an eccentric shaft 38 through a jackscrew. As shown in fig. 5, the dragging buckle 40 is in a trident shape, and includes a middle body 42, and a first driving lever 41 and a second driving lever 43 respectively located at the upper and lower sides of the middle body 42, wherein the length of the first driving lever 41 is greater than the length of the second driving lever 43. The front and rear ends of the middle body 42 are respectively positioned in the first slot hole 11 and the second slot hole 19. As shown in fig. 3, 4 and 6, the drag fastener 40 can slide up and down along the first slot 11 and the second slot 19. The output end of the eccentric shaft 38 is located between the second shift lever 43 and the middle body 42 for shifting the drag buckle 40.
The latch mechanism includes a first torsion spring 25, a second torsion spring 31, a lock block 20, and a locking tongue 26.
The locking block 20 comprises an integrally formed hinging part 23, a locking part 22 and a limiting part 21, wherein the hinging part 23 is arranged in the middle of the locking part 22, the thickness of the hinging part 23 is greater than that of the locking part 22, the connecting end of the limiting part 21 is connected with the locking part 22, the free end of the limiting part 21 is positioned between a middle main body 42 of the dragging buckle 40 and the first shifting lever 41, and the free end of the locking part 22 is provided with a limiting buckle.
The first torsion spring 25 and the locking block 20 are both hinged with the first screw seat 24, wherein the locking block 20 is hinged with the first screw seat 24 through the hinge part 23, namely the hinge part 23 is rotatably sleeved on the first screw seat 24, and the first torsion spring 25 is positioned between the locking block 20 and the shell; of course, the hinge portion 23 of the locking block 20 may be omitted, and the stopper portion 21 may be directly hinged to the first screw seat 24. One end of the first torsion spring 25 abuts against the first end of the locking portion 22 of the locking block 20, and the other end abuts against the lower housing 2.
The locking bolt 26 and the second torsion spring 31 are both hinged with the second screw seat 30, the locking bolt 26 can rotate around the second screw seat 30, and the second torsion spring 31 is located between the locking bolt 26 and the housing. A second torsion spring 31 has a first end abutting against the outer teeth 28 of the locking bolt 26 and a second end abutting against a spring force adjusting assembly 32 fixed below the second screw seat 30. The door springing force adjusting assembly 32 comprises a first adjusting piece 33 and a second adjusting piece 34 which are rectangular, wherein the distance between the first adjusting piece 33 and the micro switch 36 is less than the distance between the second adjusting piece 34 and the micro switch 36, the second end of the second torsion spring 31 can be abutted against any one of the first adjusting piece 33 and the second adjusting piece, and the torsion force when the second end of the second torsion spring 31 is clamped into the first adjusting piece 33 is greater than the torsion force when the second end of the second torsion spring 31 is clamped into the second adjusting piece 34. In the present embodiment, the first adjusting member 33 and the second adjusting member 34 are rectangular solid adjusting blocks, but may be adjusting members having other shapes or having structures such as holes and slots capable of locking the torsion spring.
As shown in fig. 1 and 2, the catch member includes a U-shaped catch 13 fixedly attached to an attachment plate 14, the attachment plate 14 being attached to a mounting plate 15 by screws. Wherein mounting panel 15 and connecting plate 14 are the rectangle, four angle fixedly connected with screw posts 16 of mounting panel 15, and connecting plate 14 is equipped with the screw hole 17 corresponding with four screw posts 16.
A controller (not shown in the drawings) is located outside the lock body, usually in the box of the metering terminal, and is electrically connected to the dc speed-reducing motor 37 and the micro switch 36, respectively. Of course the controller may also be designed with the lock body.
In the initial state, the limit buckle of lock block 20 and inner side tooth 27 of bolt 26 are in the lock state, lock catch 13 is located in lock groove 29 of bolt 26, outer side tooth 28 of bolt 26 is not in contact with reed 35 of micro switch 36, micro switch 36 detects the lock in the closed state and transmits the signal to the controller, and the controller stores the current lock state as the closed state.
When the controller receives a legal unlocking command, an unlocking control signal is sent, namely, a driving current is applied to the direct current speed reducing motor 37 in the lock, the eccentric shaft 38 rotates to drive the dragging buckle 40, the dragging buckle 40 pulls the limiting part 21 of the locking block 20 to rotate downwards around the first screw seat 24 through the first shifting rod 41, the locking part 22 of the locking block 20 moves upwards close to one end of the locking bolt 26, when the locking block moves to a certain position, the inner convex tooth 27 of the locking bolt 26 slips, and the U-shaped lock catch 13 is ejected out under the action of the second torsion spring 31. The output of the eccentric shaft 38 slides off the second shift lever 43, and the locking block 20 moves the draw button 40 upward under the action of the first torsion spring 25, and the position is reset. Meanwhile, the reed 35 of the microswitch 36 is squeezed by the convex tooth 28 outside the lock tongue 26, the switch state is changed, the microswitch 36 detects the unlocking signal of the lock and feeds the signal state back to the controller, the controller receives and stores the current lock state as the opening state, the driving current is stopped to be applied, the direct current speed reducing motor 37 stops rotating, and the unlocking process is completed.
When the lock is closed, the U-shaped lock catch 13 is pushed into the lock groove 29 of the locking tongue 26, so that the locking tongue 26 rotates counterclockwise (in the direction of fig. 3) around the second screw seat 30, the inside teeth 27 thereof slide into the limit catches of the locking block 20, and the locking block 20 catches the inside teeth 27 of the locking tongue 26 under the action of the first torsion spring 25. The reed 35 of the microswitch 36 is not compressed by the convex tooth 28 outside the bolt 26 any more, the reed 35 is released, the switch state is changed, the microswitch 36 detects that the lock is closed and feeds back the information to the controller, and the controller receives and stores the current state of the front door lock as the closed state.
When the original device needing electric drive, such as a controller or the like, breaks down to cause the lock to be incapable of being opened, the locking block 20 can be manually shifted from the first notch 4 to be unlocked.
When the force of the second torsion spring 31 needs to be adjusted, the upper shell 1 of the lock body can be opened to adjust the position of the second end of the second torsion spring 31, if a small elastic force is needed, the second adjusting part 34 at the second end of the second torsion spring 31 is abutted, and if a large elastic force is needed, the first adjusting part 33 at the second end of the second torsion spring 31 is abutted.
Claims (8)
1. The utility model provides a security module on electric wire netting measurement terminal, includes lock body, hasp piece and controller, its characterized in that: the lock body is arranged on the box body of the metering terminal, and the lock catch piece is arranged on the box door of the metering terminal, or the lock body is arranged on the box door of the metering terminal, and the lock catch piece is arranged on the box body of the metering terminal;
the lock body comprises a shell, and a locking mechanism and an electric unlocking mechanism are arranged in the shell;
the lock catch mechanism comprises a lock tongue (26) arranged at a lock tongue opening (7) on the shell, and the lock tongue (26) is used for being matched with the lock catch piece to realize locking;
the electric unlocking mechanism comprises a microswitch (36) and an electric driving mechanism;
the electric drive mechanism is used for driving the lock tongue (26) to act;
the microswitch (36) is fixed in the shell and used for detecting the switch state;
the controller is electrically connected with the micro switch (36) and the electric driving mechanism respectively.
2. A security module on a grid metering terminal as claimed in claim 1, wherein: the electric driving mechanism comprises a direct current speed reducing motor (37) and a dragging buckle (40); the direct current speed reducing motor (37) is arranged on the left side of the microswitch (36), and an output shaft is connected with an eccentric shaft (38); the dragging buckle (40) comprises a middle main body (42), a first driving lever (41) and a second driving lever (43) which are respectively positioned on the upper side and the lower side of the main body, wherein the length of the first driving lever (41) is greater than that of the second driving lever (43); the front end and the rear end of the middle main body (42) are respectively positioned in a first slotted hole (11) and a second slotted hole (19) on the shell so as to realize the up-and-down movement relative to the shell; the output end of the eccentric shaft (38) is positioned between the second driving lever (43) and the middle main body (42) and is used for driving the dragging buckle (40) under the driving of the direct-current speed reducing motor (37); one end of the locking mechanism is positioned between the first driving lever (41) and the middle main body (42) and moves under the driving of the dragging buckle (40); the controller is electrically connected with the direct current speed reducing motor (37).
3. A security module on a grid metering terminal as claimed in claim 2, wherein: the locking mechanism further comprises a first torsion spring (25), a second torsion spring (31) and a locking block (20); the first torsion spring (25) and the locking block (20) are both hinged with the shell; one end of the first torsion spring (25) abuts against the first end of the locking part (22) of the locking block (20), and the other end of the first torsion spring abuts against the shell; the locking block (20) further comprises a limiting part (21) which is integrally formed with the locking part (22), and the free end of the limiting part (21) is positioned between the middle main body (42) and the first shifting lever (41);
the free end of the locking part (22) is provided with a limit buckle matched with the lock tongue (26);
the lock tongue (26) and the second torsion spring (31) are hinged with the shell, the first end of the second torsion spring (31) is abutted against the outer side convex tooth (28) of the lock tongue (26), and the second end of the second torsion spring is abutted against the spring door strength adjusting component (32) arranged on the shell; a lock groove (29) is formed in the middle of the lock tongue (26), and the position of the lock groove (29) corresponds to that of the lock tongue opening (7);
the second torsion spring (31) is used for driving the bolt (26) to rotate and leave the bolt opening (7) to realize unlocking, and the first torsion spring (25) is used for driving the limiting part (21) of the locking block (20) to block one side of the bolt (26) and prevent the bolt from rotating and unlocking; the other side of the bolt (26) is provided with an arc surface which is used for pushing the limiting part (21) open when the bolt (26) rotates along the direction opposite to the unlocking direction so that the limiting part (21) hooks the bolt (26) after passing over the end part of the bolt (26) to realize locking;
the lock tongue (26) is also provided with convex teeth for touching the micro switch (36).
4. A security module on a grid metering terminal as claimed in claim 3, wherein: the door springing force adjusting assembly (32) comprises a first adjusting piece (33) and a second adjusting piece (34), the distance from the first adjusting piece (33) to the micro switch (36) is smaller than the distance from the second adjusting piece (34) to the micro switch (36), and the second end of the second torsion spring (31) can be abutted to any one of the first adjusting piece (33) and the second adjusting piece.
5. A security module on a grid metering terminal as claimed in any one of claims 1 to 4, characterized in that: the shell is provided with a first through hole (6), and the first through hole (6) is located above the bolt opening (7).
6. The security module on a grid metering terminal of claim 5, wherein: a second through hole (9) is formed in the position, matched with the micro switch (36), of the shell, a supporting plate (44) is arranged on one side wall of the second through hole (9), and the supporting plate (44) abuts against the micro switch (36).
7. A security module on a grid metering terminal as claimed in claim 6, wherein: the lock catch piece comprises a U-shaped lock catch (13) fixedly connected to a connecting plate (14), and the connecting plate (14) is connected with a mounting plate (15) through a screw; the U-shaped lock catch (13) is used for being matched with the lock tongue (26).
8. A security module on a grid metering terminal as claimed in claim 6, wherein: the shell is also connected with a connecting piece (3) through a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020079937.3U CN211598105U (en) | 2020-01-15 | 2020-01-15 | Safety module on power grid metering terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020079937.3U CN211598105U (en) | 2020-01-15 | 2020-01-15 | Safety module on power grid metering terminal |
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| Publication Number | Publication Date |
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| CN211598105U true CN211598105U (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020079937.3U Active CN211598105U (en) | 2020-01-15 | 2020-01-15 | Safety module on power grid metering terminal |
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| CN (1) | CN211598105U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965861A (en) * | 2020-01-15 | 2020-04-07 | 烟台东方威思顿电气有限公司 | Safety module on power grid metering terminal |
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2020
- 2020-01-15 CN CN202020079937.3U patent/CN211598105U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965861A (en) * | 2020-01-15 | 2020-04-07 | 烟台东方威思顿电气有限公司 | Safety module on power grid metering terminal |
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