CN211473696U

CN211473696U - Spline hole wheel lock body and large door knob coded lock with same

Info

Publication number: CN211473696U
Application number: CN201920818897.7U
Authority: CN
Inventors: 陆绍章
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2020-09-11
Anticipated expiration: 2029-05-30

Abstract

The utility model provides a spline hole wheel lock body includes mounting panel, left side board, right side board, nut post, support piece, countersunk screw, and the mounting panel both ends are equipped with the mounting hole, and the mounting panel sets up the rectangle through-hole, and mounting panel, left side board and right side board pass through support piece, nut post, countersunk screw connection and fix into one and have the hollow frame body of certain width between the board of both sides, its characterized in that: the right side plate of the left side plate is longitudinally provided with 6 spline hole wheel shaft holes and/or other shaft holes or pressing plates according to a certain distance by taking the outer surface of the mounting plate as a reference, a hollow shaft connected with the spline hole wheel is matched with the shaft holes in a sliding way, and the spline hole wheel rotates under the action of external force to drive the edge cutting wheel or the gear edge cutting wheel combined wheel or the ball spring push rod to enter the lock cavity to be combined or not to enter the lock cavity to be separated. The utility model has the advantages that: the utility model discloses safer, pick-proof saw-proof, sturdy and durable.

Description

Spline hole wheel lock body and large door knob coded lock with same

The technical field is as follows:

the utility model relates to a spline hole wheel lock body and be equipped with big knob trick lock of this lock body. The spline hole wheel lock body and the knob coded lock are particularly suitable for being opened and closed in a theft-proof mode on a gate of a resident user, and are particularly suitable for being used under the condition that a key is not used and a lock cylinder is not used.

Background art:

the lockset and the lock body on the gate in the prior art are open type lock cylinder devices, namely electronic locks on the current market, most fingerprint locks are provided with lock cylinders and spare keys, and people can directly open and lock the gate by using the keys. If the key is stolen, lost, copied, technically unlocked and the like, the safety risk can be caused; the lock core or the lock is frequently replaced for renting, selling, decorating and the like of houses.

The invention content is as follows:

in order to solve the problem, the utility model provides a spline hole wheel lock body and be equipped with big knob of door trick lock of this lock body, this lock body and trick lock do not have the lock core, and no key is opened. The spline hole wheel lock body is arranged in the middle of the thick end surface of the gate, when in use, the door can be opened and locked only by remembering the password rotating knob for opening the door, the password can be conveniently and automatically changed, and the anti-disclosure baffle is arranged, so that the possibility of real anti-theft of the anti-theft lock is realized.

The utility model provides a technical scheme that its technical problem adopted is: a spline hole wheel lock body is designed, and a spline hole wheel of the lock body has three forms, namely a spline hole truncated wheel type and a spline hole gear type and a spline hole cam type. The spline hole wheel lock body structure in the three forms comprises an installation plate, a left side plate, a right side plate, a support piece, a nut column and a sunk screw. Mounting holes are formed in two ends of the mounting plate, and rectangular through holes are formed in the surface of the mounting plate. The mounting plate, the left side plate and the right side plate are connected and combined into a frame body with a hollow middle part through the supporting piece, the nut column and the sunk screw.

A first spline hole truncated wheel type is shown in fig. 1: and 6 shaft holes are respectively and longitudinally arranged on the planes of the two side plates of the left side plate and the right side plate, a hollow shaft of the spline hole edge cutting wheel is in sliding fit with the shaft holes, and the edge cutting wheel enters the lock cavity or does not enter the lock cavity when the spline hole edge cutting wheel rotates.

The edge cutting wheel train is a circular body, the thickness of the edge cutting wheel train is smaller than the width between the left side plate and the right side plate of the lock body, the spline holes are arranged in the center of the circular body according to 10 equal parts, the center line is taken according to 10 equal parts as the reference, the adjacent equal division points are taken as end points to be used as vertical connecting lines, the parts except the connecting lines are removed, namely, the arc-shaped area of a local circular arc is cut off on the circumference, and therefore the edge cutting wheel is called. The distance between the cutting edge and the center of the cutting edge wheel is equal to the distance between the outer surface of the mounting plate and the shaft hole, and when the cutting edge of the spline hole cutting edge wheel is consistent and parallel to the outer surface of the mounting plate, the lock body is separated from the lock cavity and is combined with the lock cavity.

The second spline hole gear type is shown in figure 2: the left side board, the right side board both sides plane vertically set up 6 groups of shaft holes respectively, and every group shaft hole transversely sets up 3 gears, and 1 st is the splined hole gear, and the centre is middle round hole gear, and the end is round hole gear cut edge wheel combination wheel. The hollow shaft of the spline hole gear is matched with the shaft hole in a sliding mode, and the middle round hole gear and the truncated wheel combination wheel of the tail end round hole gear are matched with the fixed shaft in the lock body in a sliding mode. The longitudinal gears of each group do not touch each other, the reference circles of the transverse gears are in a meshed state, and the spline hole gears can drive the gear wheel and the gear wheel combination wheel to synchronously rotate, so that the edge cutting wheel in the gear wheel and gear wheel combination wheel enters the lock cavity or does not enter the lock cavity.

The gear wheel combination wheel is characterized in that two sides of the tail end gear are connected with fixed edge cutting wheels to form a combination wheel, the diameter of the edge cutting wheel is larger than that of the gear tooth top circle, and when the edge cutting of the gear edge cutting wheel combination wheel is consistent and parallel with the outer surface of the mounting plate, the lock body is separated from the lock cavity and is reversely combined with the lock cavity.

The third spline hole cam is shown in fig. 3: the plane of the two sides of the left side plate and the plane of the two sides of the right side plate are respectively and longitudinally provided with 6 shaft holes, the hollow shafts of the 6 spline hole cams are in sliding fit with the shaft holes, the pressing plate, the spring and the ball spring push rod are arranged in the lock body, the spline hole cams rotate, and the ball spring push rod performs regular forward and backward movement along the track of the cam under the action of the spring pressing plate, so that the ball spring push rod enters the lock cavity or does not enter the lock cavity.

The spline hole cam is characterized in that a circular body is divided into 10 equal parts, one of the equal parts is taken as a central point, two adjacent points are taken as end points to serve as connecting lines, the connecting lines are perpendicular to the central line, short planes of 3-5 mm are symmetrically reserved at the center of the connecting lines, two ends of each short plane are connected with the two adjacent points in a diagonal manner, and then R is used for smooth transition. The ball of the ball ejection rod is a spherical body and is in close contact with the cam, the friction resistance is small, the ejection distance is equal to the distance from the short plane of the connecting line to the outer diameter of the cam, the ball is movably connected with the ejection rod pin, the spline holes are formed in the center of the cam according to 10 equal parts, and when the end face of the ejection rod is level with the outer surface of the mounting plate, the lock body is separated from the lock cavity and is reversely combined with the lock cavity.

The utility model also provides a novel gate knob trick lock, this trick lock include interior panel, outer panel, interior panel handle, outer panel handle, mounting screw, lock chamber, are equipped with a spline hole wheel lock body at the thick terminal surface in gate, according to the spline hole position on the lock body, on the gate, correspondingly set up 6 hole diameter slightly and be greater than the spline hole diameter on interior panel, the outer panel, pass through mounting screw and gate with the outer panel of interior panel and fix together. The inner panel, the outer panel, the lock body splined hole and the through hole on the gate are concentric and consistent. The design of the outer cipher knob is that the end face of the knob is equally divided into 10 parts and provided with 0 to 9 numbers, the outer cipher knob is integrally connected with one end of a spline shaft, the equal part of the spline shaft and the equal part of the spline hole are 10 equal parts, and the diameter of the spline shaft is the same as that of the spline hole and is in sliding fit with the spline hole. The other end of the spline shaft is provided with a screw hole. The inner code knob is arranged, the end face of the inner code knob is equally divided into 10 parts, 0-9 numbers are arranged, the other end of the inner code knob is a closed spline hole, a screw hole is formed in the center of the end face of the inner code knob with the numbers, and the spline shafts connected with the 6 outer code knobs are respectively and sequentially inserted into the outer panel hole, the large door hole, the lock body spline hole, the inner panel hole and the inner code knob spline hole and are fastened by screws. And 6 transverse line marks are longitudinally arranged on the outer panel corresponding to the center of the outer password knob. The outer cipher knob is rotated to drive the edge cutting wheel or the gear edge cutting wheel combination wheel or the ball spring push rod to enter the lock cavity for combination or not to enter the lock cavity for separation through the spline shaft, so that the opening and closing of the gate are accurately and safely controlled.

In order to prevent the password from divulging secretly, the utility model discloses still set up and prevent divulging secretly the baffle, respectively establish a baffle on panel outer panel including promptly, the baffle is around the pin luffing motion, and the pin is established at the panel side outside, is equipped with the handle at the baffle lower extreme, is equipped with protruding card in the upper end, is equipped with concave card on panel outer panel including, connects a lead wire on outer baffle handle and the interior outer panel and each other is the linkage auto-lock for the post of punching. A groove is formed in one end, close to the outer password knob, of the spline shaft of the outer password knob, and a wear-resistant rubber elastic ring is clamped inside the groove and in transition fit with the flanging hole of the outer panel. The outer code knob does not rotate when suddenly stopping rotating.

When the door lock is used, the door is closed, the handle of the outer baffle is held by hand to lift the outer baffle upwards, the convex card at the upper end of the outer baffle is clamped in the concave card at the upper end of the outer panel, the lead wires which are mutually linked and self-locked are tightened, the 6 outer cipher knobs are conveniently rotated by hands, and the spline hole edge cutting wheel or the gear edge cutting wheel combination wheel or the ball spring push rod enters the lock cavity to be blocked so as to lock the door.

If the door is opened, the scales of the manual outer password knob are respectively corresponding to the transverse line marks of the outer panel according to the memorized password door opening numbers, and then the door is opened.

If someone is outside the indoor door, the lead wires of the inner baffle and the outer baffle are linked and self-locked with each other, so that the person outside cannot see the rotation condition of the outer code knob. If the lead is cut off by outsiders, the lead can loosen and not be tightened when the inner baffle is used in indoor operation, and the owner immediately knows that the rotary door opening action of the inner code knob can be immediately stopped, so that the code cannot be leaked, and the safety is ensured.

If the password is changed by self, the screw of the inner password knob is loosened, the inner password knob is taken down, the spline shaft of the outer password knob is pulled out of the door, the set password is inserted into the door hole again, and the inner password knob corresponding to the password is fastened by the screw. The password is simple and easy to replace, and people can conveniently and quickly replace the password.

The utility model has the advantages that: the design of the spline hole wheel lock body and the large door knob coded lock with the lock body enables the opening and closing of the door to be free of keys, breaks through the fact that the traditional technical code number for opening the door by using keys can be changed and set by oneself, and is unknown to outsiders, the setting and the replacement are convenient, rapid, convenient and easy to operate and operate by people, and the design of the mutual linkage self-locking technology of the anti-disclosure baffle and the lead wire is safe to use, stronger in anti-theft performance, the door cannot be opened by any means by the outsiders, and the anti-theft lock is anti-prying, anti-sawing, firm and durable, and enables the.

Description of the drawings:

the present invention will be further explained with reference to the drawings and examples.

FIG. 1 shows a schematic view of a spline hole wheel lock according to a first embodiment of the present invention, a spline hole edge cutting wheel structure

FIG. 2 is a schematic view of a second embodiment of the spline hole gear lock of the present invention, the spline hole gear type structure

FIG. 3 is a schematic view of a third embodiment of the spline hole wheel lock of the present invention, showing a spline hole cam type structure

FIG. 4 is a schematic structural view of the door knob combination lock with spline hole wheel lock body of the present invention

FIG. 5 is a view from the direction A of FIG. 4

In the figure, 1, a countersunk screw, 2, a left side plate, 3, a spline hole wheel, 4, a right side plate, 5, a nut column, 6, a mounting plate, 7, a support piece, 8, a lock cavity, 9, a middle gear, 10, a gear wheel combination wheel, 11, an inner panel handle, 12, an inner panel, 13, a screw, 14, an inner cipher knob, 15, a convex card, 16, an inner baffle, 17, a pin, 18, a concave card, 19, a gate, 20, a handle, 21, a lead wire, 22, a spline hole wheel lock body, 23, an outer cipher knob, 24, a rubber elastic ring, 25, an outer panel, 26, a threading column, 27, an outer panel handle, 28, a ball elastic rod, 29, a spring, 30, a mounting screw, 31, an outer baffle, 32 and a pressing plate.

The specific implementation mode is as follows:

a spline hole wheel (3) lock body is designed, and the spline hole wheel (3) of the lock body has three forms, namely a spline hole truncated wheel type, a spline hole gear type and a spline hole cam type. The three spline hole wheel (3) lock body structures comprise a mounting plate (6), a left side plate (2), a right side plate (4), a supporting piece (7), a nut column (5) and a sunk screw (1). Mounting holes are formed in two ends of the mounting plate (6), and rectangular through holes are formed in the surface of the mounting plate. The mounting plate (6), the left side plate (2) and the right side plate (4) are connected and combined into a frame body with a hollow middle part through a supporting piece (7), a nut column (5) and a sunk screw (1).

A first spline hole truncated wheel type is shown in fig. 1: the two side plate planes of the left side plate (2) and the right side plate (4) are respectively and longitudinally provided with 6 shaft holes, the hollow shaft of the spline hole edge cutting wheel is in sliding fit with the shaft holes, and the edge cutting wheel enters the lock cavity (8) or does not enter the lock cavity (8) when the spline hole edge cutting wheel rotates.

The edge cutting wheel train is a circular body, the thickness of the edge cutting wheel train is smaller than the width between the left side plate and the right side plate of the lock body, the spline holes are arranged in the center of the circular body according to 10 equal parts, the center line is taken according to 10 equal parts as the reference, the adjacent equal division points are taken as end points to be used as vertical connecting lines, the parts except the connecting lines are removed, namely, the arc-shaped area of a local circular arc is cut off on the circumference, and therefore the edge cutting wheel is called. The distance between the cutting edge and the center of the cutting edge wheel is equal to the distance between the outer surface of the mounting plate (6) and the shaft hole, and when the cutting edge of the spline hole cutting edge wheel is consistent and parallel to the outer surface of the mounting plate (6), the lock body is separated from the lock cavity (8) and is combined with the lock cavity otherwise.

The second spline hole gear type is shown in figure 2: the left side plate (2) and the right side plate (4) are respectively and longitudinally provided with 6 groups of shaft holes, each group of shaft holes is transversely provided with 3 gears, the 1 st gear is a spline hole gear, the middle gear is a middle round hole gear, and the tail end of the gear is a round hole gear truncated wheel combined wheel. The hollow shaft of the spline hole gear is matched with the shaft hole in a sliding mode, and the middle round hole gear and the truncated wheel combination wheel of the tail end round hole gear are matched with the fixed shaft in the lock body in a sliding mode. The longitudinal gears of each group do not touch each other, the reference circles of the transverse gears are in a meshed state, and the spline hole gears can drive the gear wheel and the gear wheel are combined to rotate synchronously, so that the edge cutting wheel in the gear wheel and the gear wheel are.

The gear wheel combination wheel is characterized in that two sides of the tail end gear are connected with fixed edge cutting wheels to form a combination wheel, the diameter of the edge cutting wheel is larger than that of a gear tooth top circle, and when the edge cutting position in the gear edge cutting wheel combination wheel is consistent and parallel with the outer surface of the mounting plate (6), the lock body is separated from the lock cavity (8) and is combined with the lock cavity.

The third spline hole cam is shown in fig. 3: the left side plate (2) and the right side plate (4) are respectively and longitudinally provided with 6 shaft holes, hollow shafts of 6 spline hole cams are in sliding fit with the shaft holes, a pressing plate (32), a spring (29) and a ball spring push rod (28) are arranged in a lock body, the spline hole cams rotate, the ball spring push rod (28) does regular forward and backward movement along a cam track under the action of the spring (29) pressing plate (32), and the ball spring push rod (28) enters a lock cavity (8) or does not enter the lock cavity (8).

The spline hole cam is characterized in that a circular body is divided into 10 equal parts, one of the equal parts is taken as a central point, two adjacent points are taken as end points to serve as connecting lines, the connecting lines are perpendicular to the central line, short planes of 3-5 mm are symmetrically reserved at the center of the connecting lines, two ends of each short plane are connected with the two adjacent points in a diagonal manner, and then R is used for smooth transition. The ball ejector pin (28) is characterized in that the ball is a spherical body and is in close contact with the cam, the friction resistance is small, the ejection distance is equal to the distance from the short plane of the connecting line to the outer diameter of the cam, the ball is movably connected with the ejector pin, spline holes are formed in the center of the cam according to 10 equal parts, and when the end face of the ejector pin is level with the outer surface of the mounting plate (6), the lock body is separated from the lock cavity (8) and is otherwise combined.

The utility model also provides a novel gate knob trick lock, this trick lock includes inner panel (12), outer panel (25), inner panel handle (11), outside board handle (27), mounting screw (30), lock chamber (8), a spline hole wheel (3) lock body is equipped with at the thick terminal surface of door, according to the spline hole position on the lock body, on gate (19), inner panel (12), correspond on outer panel (25) to set up 6 hole diameter and slightly be greater than the spline hole diameter, be in the same place inner panel (12) outer panel (25) are fixed through mounting screw (30) and gate (19). The inner panel (12), the outer panel (25), the lock body spline hole and the through hole on the gate (19) are concentric and consistent. The design of the outer cipher knob (23) is that the end face of the knob is equally divided into 10 parts and provided with 0 to 9 numbers, the outer cipher knob (23) is integrally connected with one end of the spline shaft, the equal parts of the spline shaft and the spline hole are 10 equal parts, and the diameter of the spline shaft is the same as that of the spline hole and is in sliding fit with the spline hole. The other end of the spline shaft is provided with a screw hole. An inner code knob (14) is arranged, the end face of the inner code knob (14) is equally divided into numbers from 0 to 9 according to 10, the other end of the inner code knob is a closed spline hole, a screw (13) hole is arranged at the center of the end face with the numbers of the inner code knob (14), and spline shafts connected with 6 outer code knobs (23) are respectively and sequentially inserted into a hole of an outer panel (25), a hole of a large door (19), a spline hole of a lock body, a hole of an inner panel (12) and a spline hole of the inner code knob (14) and are fastened by the screw (13). And 6 transverse line marks are longitudinally arranged on the outer panel (25) at the position corresponding to the center of the outer cipher knob (23). The outer cipher knob (23) is rotated to drive the edge cutting wheel or the gear edge cutting wheel combination wheel or the ball spring push rod (28) to enter the lock cavity (8) for combination or not enter the lock cavity (8) for separation through the spline shaft, so that the opening and the closing of the gate (19) are accurately and safely controlled.

In order to prevent the password to let out secret, the utility model discloses still set up and prevent letting out secret baffle, respectively establish a baffle on panel (12) outer panel (25) including promptly, the baffle is around the pin luffing motion, the pin is established at outer panel (25) side, be equipped with handle (20) at the baffle lower extreme, be equipped with protruding card (15) in the upper end, be equipped with concave card (18) in panel (12) outer panel (25) upper end, on outer baffle handle (20) and interior outer panel cross core post (26) on connect a lead wire (21) each other to link the auto-lock. A groove is formed in one end, close to the outer cipher knob (23), of the spline shaft of the outer cipher knob (23), and a wear-resistant rubber elastic ring (24) is clamped inside the groove and is in transition fit with a flanging hole of the outer panel (25). The outer code knob (23) does not rotate when suddenly stopping rotating.

When the door lock is used, the door (19) is closed, the handle (20) of the outer baffle (31) is held by hand, the outer baffle (31) is lifted upwards, the convex card (15) at the upper end of the outer baffle (31) is clamped in the concave card (18) at the upper end of the outer panel (25), the lead wires (21) which are mutually linked and self-locked are tightened, the 6 outer cipher knobs (23) are rotated by hands at will, and the spline hole edge cutting wheel or gear edge cutting wheel combination wheel or ball spring push rod (28) enters the lock cavity (8) to be blocked so that the door (19) is locked.

If the door (19) is opened, the scales of the manual outer code knob (23) are respectively marked corresponding to the transverse lines of the outer panel (25) according to the memorized code opening number, and then the door (19) is opened.

If someone is outside the indoor door, the inner baffle (16) and the lead (21) of the outer baffle (31) are interlocked and self-locked, so that the person outside cannot see the rotation of the outer code knob (23). If the lead wire (21) is cut off by outsiders, the lead wire (21) can be loosened and not tightened when the inner baffle plate (16) is used in indoor operation, and the owner immediately knows that the rotary door opening action of the inner code knob (14) can be immediately stopped, so that the code cannot be leaked, and the safety is ensured.

If the password is changed by self, the screw of the inner password knob (14) is loosened, the inner password knob (14) is taken down, the spline shaft of the outer password knob (23) is pulled out of the door, the set password is inserted into the hole of the gate (19) again, and the inner password knob (14) corresponding to the password is fastened by the screw (13). The password is simple and easy to replace, and people can conveniently and quickly replace the password.

The utility model has the advantages that: due to the technical design of the splined hole wheel (3) lock body and the knob coded lock of the gate (19) provided with the lock body, a key is not needed for opening and closing the gate (19), the traditional technical code number for opening the gate (19) by using the key can be automatically changed, an outsider can not know the technical code number, the arrangement is convenient and quick, the operation is simple and easy, the anti-disclosure baffle and the lead wire are mutually linked and self-locking technology is designed, the use is safer, the anti-theft performance is stronger, the gate (19) can not be opened by any means by the outsider, the door is prying and sawing resistant, the door is firm and durable, and the possibility of real anti-theft of the.

Claims

1. The utility model provides a spline hole wheel lock body, includes mounting panel, left side board, right side board, nut post, support piece, countersunk screw, and the mounting panel both ends are equipped with the mounting hole, and the mounting panel sets up the rectangle through-hole, and mounting panel, left side board and right side board pass through support piece, nut post, countersunk screw connection and fix into one and have the hollow frame body of certain width between the board of both sides, its characterized in that: the right side plate of the left side plate is longitudinally provided with 6 spline hole wheel shaft holes and/or other shaft holes or pressing plates according to a certain distance by taking the outer surface of the mounting plate as a reference, a hollow shaft connected with the spline hole wheel is matched with the shaft holes in a sliding way, and the spline hole wheel rotates under the action of external force to drive the edge cutting wheel or the gear edge cutting wheel combined wheel or the ball spring push rod to enter the lock cavity to be combined or not to enter the lock cavity to be separated.

2. A splined bore wheel lock according to claim 1, wherein: the spline hole wheel is a cut edge wheel, and when the cut edge is consistent and parallel with the outer surface of the mounting plate, the lock body is separated from the lock cavity, and vice versa, the lock body is combined.

3. A splined bore wheel lock according to claim 1, wherein: the spline hole wheel is a gear, the gear section wheel combination wheel is driven to rotate together through the meshing rotation action of the spline hole gear, and when the section edge is consistent and parallel with the outer surface of the mounting plate, the lock body is separated from the lock cavity and is combined with the lock cavity otherwise.

4. A splined bore wheel lock according to claim 1, wherein: the spline hole wheel is a cam, the ball spring push rod is driven to move along the track of the spline hole cam through the rotation of the cam, and when the end face of the ball spring push rod is level with the outer surface of the mounting plate, the lock body is separated from the lock cavity and is reversely combined with the lock cavity.

5. The utility model provides a big door knob trick lock, includes outer panel, interior panel, outer panel handle, interior panel handle, mounting screw, lock chamber, its characterized in that: the gate knob combination lock is provided with a splined bore wheel lock body according to claim 1 on the thick end face of the gate.

6. The large door knob combination lock according to claim 5, wherein: the outer panel, the inner panel and the gate are provided with 6 holes corresponding to the spline hole wheel lock body, spline shafts connected with the outer password knob are inserted into the spline hole wheel, the outer panel, the inner panel and the gate, the corresponding holes of the inner password knob are fastened by screws, the outer password knob can drive the inner password knob and the spline hole wheel in the lock body to synchronously rotate under the manual action, and the outer panel is provided with 6 longitudinal transverse line marks corresponding to the center of the outer password knob.

7. The large door knob combination lock according to claim 6, wherein: the 6 holes of the outer panel are inner flanging holes, the matching part of the spline shaft connected with the outer cipher knob and the inner flanging holes of the outer panel is provided with a groove, and a rubber elastic ring is arranged in the groove to prevent autorotation.

8. The large door knob combination lock according to claim 6, wherein: the outer panel and the inner panel are provided with outer baffles and inner baffles for shielding password numbers of the inner password knob and the outer password knob, and the baffles can swing up and down around the pin and are clamped by the convex clamping concave clamps and tightened and loosened by the lead to form a mutual linkage self-locking anti-leakage function.