CN218887685U - Grounding lock - Google Patents

Abstract

The utility model discloses a ground connection lock, include: the shell is provided with a ground wire head jack; the lower end of the baffle shaft is an insertion end, and the baffle shaft is provided with a first slot along the horizontal direction; the first compression elastic piece is connected with the upper ends of the shell and the blocking shaft; the lock cylinder can synchronously rotate along with the unlocking equipment; the spring bolt is provided with a first groove, the insertion end of the baffle shaft can be inserted into the first groove to limit the movement of the spring bolt along the horizontal direction, and one end of the spring bolt abuts against the ground wire head after the ground wire head is inserted into the ground wire head insertion hole; the second compression elastic piece is connected with the shell and the other end of the bolt; one end of the locking shaft can be inserted into the first slot to limit the movement of the blocking shaft along the vertical direction; a third compression elastic member connecting the housing and the other end of the locking shaft; and the driving piece is connected with the other end of the locking shaft and abuts against the other side of the ground wire head after the ground wire head is inserted into the ground wire head jack. The utility model discloses need not to hang unblock equipment and insert on the ground connection lock always, can make things convenient for the earth connection to articulate.

Description

Grounding lock

Technical Field

The utility model relates to a grounding device field, in particular to ground connection lock.

Background

The grounding wire is a safety tool commonly used by electric power enterprises in construction or maintenance operation, can prevent the human body from being injured by sudden incoming calls by hooking the grounding wire, is a safety barrier for protecting maintenance personnel, and is also a life line of electric power personnel.

In the existing grounding device technology, a grounding pile is welded on a grounding flat iron, a grounding wire head is connected on a grounding wire, the grounding wire head is inserted into the grounding pile, and the temporary grounding wire is hung and dismantled by matching with mechanical unlocking equipment such as a padlock and a fixed lock, so that the effect of forced locking is achieved. In order to solve the problems, another technical scheme triggers a sensing element of the unlocking equipment by inserting a ground wire head, so that a chip code value or a chip ID of a ground wire detection assembly is changed, the unlocking equipment reads a change value in real time and judges the ground wire hanging state, but the scheme needs to always hang and insert the unlocking equipment on a ground lock during operation, and the convenience of the ground wire hanging and dismounting operation is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a ground connection lock, whether hang to unblock equipment and insert not have the requirement on the ground connection lock when articulating the ground wire, and then can make things convenient for the ground wire to articulate.

According to the utility model discloses a ground connection lock, include: the shell is provided with a ground wire head jack, and the ground wire head jack is used for inserting a ground wire head; the blocking shaft is arranged inside the shell in a sliding mode along the vertical direction, the lower end of the blocking shaft is an insertion end, and the blocking shaft is provided with a first slot along the horizontal direction; the first compression elastic piece is connected with the upper ends of the shell and the blocking shaft; the lock cylinder is used for inserting unlocking equipment, can synchronously rotate along with the unlocking equipment, abuts against the blocking shaft in the forward rotation process and drives the blocking shaft to upwards slide, and the blocking shaft can downwards move under the action of the elastic restoring force of the first compression elastic piece; the spring bolt is arranged inside the shell in a sliding mode along the horizontal direction, a first groove is formed in the spring bolt, the insertion end of the blocking shaft can be inserted into the first groove to limit the movement of the spring bolt along the horizontal direction, and one end of the spring bolt abuts against the ground wire head after the ground wire head is inserted into the ground wire head insertion hole; the second compression elastic piece is connected with the shell and the other end of the lock tongue; the locking shaft is arranged inside the shell in a sliding mode along the horizontal direction, and one end of the locking shaft can be inserted into the first slot to limit the blocking shaft to move along the vertical direction; a third compression elastic member connecting the housing and the other end of the latching shaft; the driving piece is connected with the other end of the locking shaft, and abuts against the other side of the ground wire head after the ground wire head is inserted into the ground wire head insertion hole.

The method has the following beneficial effects: during the use, can insert the lock core with unblock equipment, when positive twist unblock equipment, the lock core can rotate in step, and then the lock core can support and keep off the axle and order about keeping off the axial upward slip, when keeping off epaxial first slot position and locking axle and corresponding, locking axle can insert in first slot under the elastic restoring force effect of third compression elastic component, and then make and keep off the axle and can't move in vertical direction, keep off the axle and insert the end and have withdrawed from outside the first recess of spring bolt, keep off the axle and no longer restrict the spring bolt along the removal of horizontal direction, and no matter this moment whether unblock equipment hangs and insert in lock core department, keep off the axle and can not move down, consequently ground connection lock is in the unblock state. Under the unblock state, the ground wire head can be inserted and realize ground connection in the ground wire head jack, in the inserting process of ground wire head, the ground wire head can transversely support the driving piece, and then make the driving piece drive locking shaft synchronous lateral shifting and withdraw from outside the first slot, because locking shaft no longer restricts the removal of fender axle along vertical direction, can reverse twist this moment and move the unblock equipment, keep off the axle and can insert again in first recess under the elastic restoring force effect of first compression elastic component, the spring bolt of this moment can't remove along the horizontal direction, consequently, the ground connection lock is in the block state. The embodiment of the utility model provides an in the ground connection lock need not to hang unblock equipment and inserts on the ground connection lock always, can make things convenient for the earth connection to articulate.

According to the utility model discloses a some embodiments still include spacing axle and state axle, spacing axle vertical sliding set up in the inside of shell, state axle horizontal sliding set up in the inside of shell, the shell with be provided with fourth compression elastic component between the upper end of spacing axle, the state axle with be provided with fifth compression elastic component between the spacing axle, spacing axle has seted up first spacing hole and the spacing hole of second from top to bottom in proper order, the one end of state axle can insert first spacing hole or in the spacing hole of second, the side on fender axle upper portion has been seted up and has been dodged the recess, the other end of state axle can support the top keep off the side of axle or dodge the recess, shown locking axle is provided with first outer periphery and second outer periphery, first outer periphery with the outer periphery is adjacent just the outer diameter of first outer periphery is greater than the outer diameter of second outer periphery, the lower extreme of shown spacing axle can support first outer periphery or the second outer periphery.

According to some embodiments of the invention, the locking shaft and the driving member are interconnected by a connecting plate.

According to some embodiments of the present invention, the third compression spring is sleeved on the locking shaft and at one end connected to the connecting plate.

According to some embodiments of the utility model, be provided with the second recess on the spring bolt, the second recess is less than along the ascending degree of depth of vertical side first recess is along the ascending degree of depth of vertical side, the second recess is located first recess is close to one side of ground lead jack, the second recess with first recess at least part intercommunication is for the end of inserting of fender axle by the second recess slides in first recess.

According to the utility model discloses a some embodiments, be provided with the second slot on the fender axle, the second slot is less than along the ascending degree of depth of horizontal direction first slot is along the ascending degree of depth of horizontal direction, the second slot is located first slot is kept away from one side of spring bolt, the second slot with first slot at least part intercommunication is for the tip of locking axle by the second slot slides in the first slot.

According to the utility model discloses a some embodiments, still be provided with state trigger shaft and micro-gap switch in the shell the ground wire head inserts under the state in the ground wire head jack, the ground wire head supports the state trigger shaft, the state trigger shaft supports micro-gap switch, be provided with the wireless code piece on the lock core, micro-gap switch's triggering can arouse the sign indicating number value of wireless code piece changes.

According to the utility model discloses a some embodiments, the spacing groove has been seted up along self axial in the bottom of spring bolt, be provided with spacing arch on the shell, spacing protruding holding in the spacing inslot.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further described with reference to the following figures and examples, in which:

fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic side view of an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of the grounding lock according to the embodiment of the present invention when the grounding lock is not inserted into the ground wire end and is in a locking state;

fig. 4 is a schematic cross-sectional view of the grounding lock according to the embodiment of the present invention when the grounding lock is not inserted into the ground wire end and is in an unlocked state;

fig. 5 is a schematic cross-sectional view of the grounding lock according to the embodiment of the present invention when the grounding lock is inserted into the ground wire end and in a locked state;

fig. 6 is a schematic cross-sectional structure view of the grounding lock according to the embodiment of the present invention when the ground wire end is pulled out and the grounding lock is in an unlocked and unset state;

fig. 7 is a schematic cross-sectional view of the wire end socket in the state of fig. 5.

Reference numerals:

the ground wire terminal comprises a shell 100, a ground wire terminal jack 110, a limiting bulge 120, a mounting accessory 130 and a grounding pile 140;

ground wire head 200, annular groove 210, wing nut 220;

the stop shaft 300, the first compression elastic piece 310, the insertion end 320, the first slot 330, the avoiding groove 340 and the second slot 350;

the lock core 400, the wireless code chip 410, the dust cover 420 and the tail shaft 430;

the locking bolt 500, the second compression elastic piece 510, the first groove 520, the second groove 530 and the limiting groove 540;

a latching shaft 600, a third compression elastic member 610, a driving member 620, a connection plate 630, a first outer circumferential surface 640, a second outer circumferential surface 650;

a limiting shaft 700, a fourth compression elastic member 710, a first limiting hole 720, and a second limiting hole 730;

a state shaft 800, a fifth compression spring 810;

the state triggers the shaft 900, the microswitch 910.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to the orientation description, such as the front, rear, left, right, upper, lower, etc., is the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the invention.

In the description of the present invention, if there are first, second, etc. described, it is only for the purpose of distinguishing technical features, and it is not understood that relative importance is indicated or implied or that the number of indicated technical features is implicitly indicated or that the precedence of the indicated technical features is implicitly indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 7, the present invention discloses a ground lock, including a housing 100, a stopper shaft 300, a first compression elastic member 310, a lock cylinder 400, a latch bolt 500, a second compression elastic member 510, a locking shaft 600, a third compression elastic member 610, and a driving member 620.

The housing 100 is provided with a ground wire head jack 110, the ground wire head jack 110 is used for inserting a ground wire head 200, the stop shaft 300 is arranged in the housing 100 in a sliding manner along the vertical direction, the lower end of the stop shaft 300 is an insertion end 320, the stop shaft 300 is provided with a first slot 330 along the horizontal direction, the first compression elastic member 310 is connected with the upper ends of the housing 100 and the stop shaft 300, the lock cylinder 400 is used for inserting an unlocking device, the lock cylinder 400 can rotate synchronously with the unlocking device, the lock cylinder 400 abuts against the stop shaft 300 in the forward rotation process and drives the stop shaft 300 to slide upwards, the stop shaft 300 can move downwards under the action of the elastic restoring force of the first compression elastic member 310, the lock tongue 500 is arranged in the housing 100 in a sliding manner along the horizontal direction, the first groove 520 is formed in the lock tongue 500, the insertion end 320 of the stop shaft 300 can be inserted into the first groove 520 to limit the movement of the lock tongue 500 along the horizontal direction, one end of the lock tongue 500 abuts against the ground wire head 200 after the ground wire head 200 is inserted into the ground wire head jack 110, the second compression elastic member is connected with the other end of the lock tongue 500, the lock tongue 600 is inserted into the other end of the locking shaft 600, and the other end of the lock tongue 600 is connected with the drive member 600, and the ground wire head 600, the drive member 600 connected with the other end of the lock tongue 100, and the ground wire head 600, and the drive member 600, and the ground wire head 600.

It can be understood that, when the unlocking device is used, the unlocking device can be inserted into the lock cylinder 400, when the unlocking device is screwed forward, the lock cylinder 400 can rotate synchronously, and then the lock cylinder 400 can abut against the blocking shaft 300 and drive the blocking shaft 300 to slide upwards, when the position of the first slot 330 on the blocking shaft 300 corresponds to the locking shaft 600, the locking shaft 600 can be inserted into the first slot 330 under the elastic restoring force of the third compression elastic member 610, so that the blocking shaft 300 cannot move in the vertical direction, at this time, the insertion end 320 of the blocking shaft 300 is already withdrawn out of the first groove 520 of the lock tongue 500, the blocking shaft 300 no longer limits the movement of the lock tongue 500 in the horizontal direction, and at this time, no matter whether the unlocking device is hooked at the lock cylinder 400, the blocking shaft 300 cannot move downwards, and therefore, the grounding lock is in the unlocking state. In the unlocked state, the ground wire head 200 can be inserted into the ground wire head insertion hole 110 to achieve grounding, during the insertion process of the ground wire head 200, the ground wire head 200 transversely abuts against the driving member 620, so that the driving member 620 drives the locking shaft 600 to synchronously and transversely move and withdraw from the first insertion slot 330, since the locking shaft 600 does not limit the movement of the blocking shaft 300 along the vertical direction any more, the unlocking device can be reversely screwed at this time, the blocking shaft 300 can be inserted into the first groove 520 again under the elastic restoring force of the first compression elastic member 310, and the latch tongue 500 cannot move along the horizontal direction at this time, so that the ground lock is in the locked state. The embodiment of the utility model provides an in the ground connection lock need not to hang unblock equipment always and inserts on the ground connection lock, can make things convenient for the earth connection to articulate.

It should be noted that, the end of the lock cylinder 400 is provided with a tail shaft 430, when the unlocking device is rotated, the lock cylinder 400 rotates and drives the tail shaft 430 on the lock cylinder 400 to rotate synchronously, and the cross-sectional shape of the tail shaft 430 may be composed of a major arc section and a straight section. After the ground wire end 200 is inserted, the other end of the ground wire end 200 may be locked by the wing nut 220. In addition, the compression elastic member may be a compression spring.

In addition, as shown in fig. 7, the annular groove 210 is formed at a position of the ground wire head 200 near the end portion, and when the ground wire head 200 is inserted into the ground wire head insertion hole 110, a side surface of the end portion of the ground wire head 200 may first abut against an end portion of the latch tongue 500 and then abut against an end portion of the driving member 620, and at the same time, the latch tongue 500 moves forward to extend into and abut against the annular groove 210. It is understood that the latch bolt 500 and the driving member 620 may be disposed to be offset in the left and right direction.

Referring to fig. 3 to 6, the embodiment of the present invention further includes a limiting shaft 700 and a state shaft 800, the limiting shaft 700 is vertically slidably disposed inside the housing 100, the state shaft 800 is horizontally slidably disposed inside the housing 100, a fourth compression elastic member 710 is disposed between the housing 100 and the upper end of the limiting shaft 700, a fifth compression elastic member 810 is disposed between the state shaft 800 and the limiting shaft 700, the limiting shaft 700 has a first limiting hole 720 and a second limiting hole 730 sequentially disposed from top to bottom, one end of the state shaft 800 can be inserted into the first limiting hole 720 or the second limiting hole 730, an avoiding groove 340 is disposed on the side of the upper portion of the blocking shaft 300, the other end of the state shaft 800 can abut against the side of the blocking shaft 300 or the avoiding groove 340, the locking shaft 600 is provided with a first outer circumferential surface 640 and a second outer circumferential surface 650, the first outer circumferential surface 640 is adjacent to the second outer circumferential surface 650, and the outer diameter of the first outer circumferential surface 640 is greater than the outer circumferential surface 650, and the lower end of the limiting shaft 700 can abut against the first outer circumferential surface 640 or the second outer circumferential surface 650.

Specifically, as shown in fig. 3, in an initial state, that is, when the ground lock is not inserted into the ground wire end 200 and is in a locked state, one end of the state shaft 800 abuts against the avoiding groove 340 on the side surface of the blocking shaft 300, the other end of the state shaft 800 is not inserted into the first limiting hole 720 and the second limiting hole 730, and the limiting shaft 700 abuts against the first outer circumferential surface 640; as shown in fig. 4, when the ground lock is not inserted into the ground wire head 200 and is in an unlocked state, the state shaft 800 is separated from the avoiding groove 340, one end of the state shaft abuts against the side surface of the blocking shaft 300, the other end of the state shaft is inserted into the second limiting hole 730 of the limiting shaft 700, and at this time, the limiting shaft 700 abuts against the first outer circumferential surface 640; as shown in fig. 5, in a state that the ground lock is inserted into the ground wire head 200 and is locked, one end of the state shaft 800 abuts against the escape groove 340 on the side surface of the blocking shaft 300, at this time, the other end of the state shaft 800 is not inserted into the first limiting hole 720 and the second limiting hole 730, and meanwhile, the limiting shaft 700 moves downward and abuts against the second outer circumferential surface 650 under the elastic restoring force of the fourth compression elastic member 710; as shown in fig. 6, when the ground lock is pulled out of the ground wire head 200 and is in an unlocked and un-returned state, the state shaft 800 is separated from the avoiding groove 340 and one end of the state shaft abuts against the side surface of the blocking shaft 300, the other end of the state shaft is inserted into the first limiting hole 720 of the limiting shaft 700, and at this time, the limiting shaft 700 abuts against the second outer circumferential surface 650. It is understood that, in the process of changing the state of fig. 6 back to the state of fig. 3, the latching shaft 600 may be horizontally moved and upwardly abutted against the stopper shaft 700 by the elastic restoring force of the third compression elastic member 610. By providing the position-limiting shaft 700 and the state shaft 800, the locking shaft 600 is not directly reset and inserted into the first slot 330 in the process of converting the state of fig. 5 to the state of fig. 6 (i.e., pulling out the ground lead 200).

As shown in fig. 3 to 6, the latching shaft 600 and the driving member 620 are connected to each other by a connecting plate 630, and specifically, the latching shaft 600 and the driving member 620 are both located on the same side of the connecting plate 630, so that the latching shaft 600 and the driving member 620 can synchronously move in the same direction. In addition, as shown in fig. 3 to fig. 6, the third compression elastic element 610 may be sleeved on one end of the locking shaft 600 connected to the connecting plate 630, and one end of the third compression elastic element 610 abuts against the housing 100 and the other end abuts against the locking shaft 600.

Referring to fig. 3 to 6, the locking tongue 500 is provided with a second groove 530, a depth of the second groove 530 in the vertical direction is smaller than a depth of the first groove 520 in the vertical direction, the second groove 530 is located at a side of the first groove 520 close to the ground plug insertion hole 110, and the second groove 530 is at least partially communicated with the first groove 520 so that the insertion end 320 of the blocking shaft 300 can slide into the first groove 520 from the second groove 530. During the process of the grounding lock being transferred from the state of fig. 4 to the state of fig. 5 (i.e., inserting the ground pin 200), the insertion end 320 of the blocking shaft 300 may first abut against the second groove 530, and then slide into the first groove 520 and abut against the first groove 520.

Referring to fig. 3 to 6, a second slot 350 is disposed on the blocking shaft 300, a depth of the second slot 350 in the horizontal direction is smaller than a depth of the first slot 330 in the horizontal direction, the second slot 350 is located on a side of the first slot 330 away from the latch tongue 500, and the second slot 350 is at least partially communicated with the first slot 330 so that an end of the locking shaft 600 slides into the first slot 330 from the second slot 350. In the process of the ground lock converting from the state of fig. 3 to the state of fig. 4, the end of the locking shaft 600 may first abut against the second slot 350, and then slide into the first slot 330 and abut against the first slot 330.

As shown in fig. 7, a status trigger shaft 900 and a micro switch 910 are further disposed in the housing 100, when the ground wire 200 is inserted into the ground wire receptacle 110, the ground wire 200 abuts against the status trigger shaft 900, the status trigger shaft 900 abuts against the micro switch 910, the lock cylinder 400 is provided with the wireless code chip 410, and the code value of the wireless code chip 410 is changed due to the triggering of the micro switch 910. Specifically, in a state where the ground wire header 200 is inserted into the ground wire header insertion hole 110, the ground wire header 200 will press against the state trigger shaft 900, and the state trigger shaft 900 will trigger the micro switch 910 in a process of being pressed down by the ground wire header 200 and moving downward, resulting in a change of a code value, and at this time, the unlocking device reads the changed code value to determine that the ground wire is hooked in place. In the unlocking process, the unlocking device can be inserted into the lock cylinder 400, the code value is read, and the unlocking device can be rotated if the code value is correct.

Referring to fig. 3 to 6, a limiting groove 540 is axially formed at the bottom of the locking tongue 500, a limiting protrusion 120 is disposed on the housing 100, and the limiting protrusion 120 is received in the limiting groove 540. The restriction protrusion 120 may restrict the horizontal movement range of the latch bolt 500.

It should be noted that, in the prior art, when the existing ground connection pile 140 is modified, an old pile needs to be cut and a new pile needs to be welded, which is difficult to implement and has a large workload. As shown in fig. 1, the casing 100 in the embodiment of the present invention is provided with the installation accessory 130, and the grounding lock can be installed on the existing grounding pile 140 through the installation accessory 130, so that the installation is convenient and the transformation is convenient.

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.

Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims (8)

1. A ground lock, comprising:

the shell is provided with a ground wire head jack, and the ground wire head jack is used for inserting a ground wire head;

the baffle shaft is arranged in the shell in a sliding mode along the vertical direction, the lower end of the baffle shaft is an insertion end, and the baffle shaft is provided with a first slot along the horizontal direction;

the first compression elastic piece is connected with the upper ends of the shell and the blocking shaft;

the lock cylinder is used for inserting unlocking equipment, can synchronously rotate along with the unlocking equipment, abuts against the blocking shaft in the forward rotation process and drives the blocking shaft to upwards slide, and the blocking shaft can downwards move under the action of the elastic restoring force of the first compression elastic piece;

the spring bolt is arranged inside the shell in a sliding mode along the horizontal direction, a first groove is formed in the spring bolt, the insertion end of the blocking shaft can be inserted into the first groove to limit the movement of the spring bolt along the horizontal direction, and one end of the spring bolt abuts against the ground wire head after the ground wire head is inserted into the ground wire head insertion hole;

the second compression elastic piece is connected with the shell and the other end of the lock tongue;

the locking shaft is arranged inside the shell in a sliding mode along the horizontal direction, and one end of the locking shaft can be inserted into the first inserting groove to limit the blocking shaft to move along the vertical direction;

a third compression elastic member connecting the housing and the other end of the latching shaft;

the driving piece is connected with the other end of the locking shaft, and abuts against the other side of the ground wire head after the ground wire head is inserted into the ground wire head insertion hole.

2. The ground lock of claim 1, further comprising a limiting shaft and a state shaft, wherein the limiting shaft is vertically slidably disposed inside the housing, the state shaft is horizontally slidably disposed inside the housing, a fourth compression elastic member is disposed between the housing and the upper end of the limiting shaft, a fifth compression elastic member is disposed between the state shaft and the limiting shaft, the limiting shaft is sequentially provided with a first limiting hole and a second limiting hole from top to bottom, one end of the state shaft can be inserted into the first limiting hole or the second limiting hole, an avoiding groove is disposed on the side surface of the upper portion of the blocking shaft, the other end of the state shaft can abut against the side surface of the blocking shaft or the avoiding groove, the locking shaft is provided with a first outer circumferential surface and a second outer circumferential surface, the first outer circumferential surface is adjacent to the second outer circumferential surface, the outer diameter of the first outer circumferential surface is greater than that of the second outer circumferential surface, and the lower end of the limiting shaft can abut against the first outer circumferential surface or the second outer circumferential surface.

3. The ground lock of claim 1, wherein said locking shaft and said driving member are interconnected by a connecting plate.

4. A ground lock according to claim 3, wherein said third compression spring is sleeved around an end of said locking shaft connected to said connecting plate.

5. The grounding lock as claimed in claim 1, wherein a second groove is formed in the lock tongue, the depth of the second groove in the vertical direction is smaller than the depth of the first groove in the vertical direction, the second groove is located on a side of the first groove close to the ground-wire-head insertion hole, and the second groove is at least partially communicated with the first groove so that the insertion end of the blocking shaft can slide into the first groove from the second groove.

6. The ground lock of claim 1, wherein the blocking shaft is provided with a second slot, a depth of the second slot in a horizontal direction is smaller than a depth of the first slot in the horizontal direction, the second slot is located on a side of the first slot away from the latch bolt, and the second slot is at least partially communicated with the first slot so that an end of the locking shaft can slide into the first slot through the second slot.

7. The ground lock according to any one of claims 1 to 6, wherein a status trigger shaft and a microswitch are further arranged in the housing, in a state where the ground wire head is inserted into the ground wire head insertion hole, the ground wire head abuts against the status trigger shaft, the status trigger shaft abuts against the microswitch, a wireless code chip is arranged on the lock cylinder, and the trigger of the microswitch causes the code value of the wireless code chip to change.

8. The ground lock of any one of claims 1 to 6, wherein a limiting groove is formed in the bottom of the lock tongue along the axial direction of the lock tongue, and a limiting protrusion is arranged on the housing and is accommodated in the limiting groove.

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