CN221546686U - Lock set - Google Patents

Abstract

The application relates to the technical field of locks, and discloses a lock, which comprises a lock shell, wherein the lock shell is provided with a part recessed from one surface to the other surface, so that a protruding part and a recessed part are respectively formed on the two opposite surfaces of the lock shell; the connecting shaft rotates on the concave part, and two opposite ends of the connecting shaft penetrate through the concave part and are opposite to the convex part; the flip cover is matched in the concave part and connected with the connecting shaft; the lock hook component is provided with a hooking cavity for buckling the lock catch and is connected to the connecting shaft, the connecting position is positioned on the part of the connecting shaft opposite to the protruding part, and the turning cover rotates to drive the lock hook component to rotate to a locking position or an unlocking position through the connecting shaft; the first reset piece is arranged between the connecting shaft and the lock shell and is used for giving the trend that the connecting shaft rotates until the lock hook piece reaches the locking position. The application can improve the sealing performance of the lockset.

Description

Lock set

Technical Field

The application relates to the technical field of locks, in particular to a lock.

Background

At present, lock shell locks are usually arranged at door plates rotating in containers such as vans, railway wagons, containers and cabinets, lock catches or lock holes are arranged on fixed parts, and the lock shell locks are buckled with the lock catches or the lock holes to lock door plates.

The existing lock shell lock comprises a shell, a handle and a clasp, wherein the handle rotates in a groove of the shell, the clasp is connected with the handle, the handle drives the clasp to rotate together, and a yielding hole for yielding the clasp is formed in the shell. When in use, the handle rotates to drive the clasp to rotate so as to enable the clasp to be buckled or separated with the lock catch. The existence of the abdication hole causes poor tightness of the lockset, is easily influenced by external environment, such as wind, rain, dust and the like, and easily enters the container through the abdication hole, thereby influencing the articles stored in the container.

Disclosure of utility model

In order to improve the sealing performance of a lockset, the application provides the lockset.

The application provides a lockset, which adopts the following technical scheme:

A lock, comprising:

A lock case having a portion recessed from one surface toward the other surface, the opposite surfaces of the lock case being formed with a protruding portion and a recessed portion, respectively;

The connecting shaft rotates on the concave part, and two opposite ends of the connecting shaft penetrate through the concave part and are opposite to the convex part;

The flip cover is matched in the concave part and connected with the connecting shaft;

The lock hook component is provided with a hooking cavity for buckling the lock catch and is connected to the connecting shaft, the connecting position is positioned on the part of the connecting shaft opposite to the protruding part, and the turning cover rotates to drive the lock hook component to rotate to a locking position or an unlocking position through the connecting shaft;

The first reset piece is arranged between the connecting shaft and the lock shell and is used for giving the trend that the connecting shaft rotates until the lock hook piece reaches the locking position.

Through adopting above-mentioned technical scheme, flip is located the depressed part, and latch hook spare is relative with the bellying, and flip drives latch hook spare through the rotation of pivot and rotates to make flip and latch hook spare keep apart, thereby improve the tool to lock leakproofness, make the interference thing in the external environment be difficult for entering in the container through the lock shell.

Optionally, a sealing ring propped against the outer wall of the protruding part and/or the inner wall of the recessed part is sleeved on the outer wall of the connecting shaft.

By adopting the technical scheme, the sealing ring can further improve the tightness between the connecting shaft and the shell.

Optionally, the first reset piece includes the cover and locates the epaxial first torsional spring of connecting, the torsion arm of first torsional spring one end is relative the connecting axle is spacing relatively, the torsion arm of first torsional spring other end with the lock shell offsets.

Optionally, the connecting shaft end has a release stop, and the first torsion spring is located between the latch hook and the release stop.

Through adopting above-mentioned technical scheme, the piece that only takes off can carry out spacingly to first torsional spring, improves first torsional spring's stability.

Optionally, the connecting shaft includes a rotating section and a limiting section, the rotating section rotates on the concave portion, the limiting section is disposed at two opposite ends of the rotating section, and the limiting section is located outside the concave portion and opposite to the convex portion; the connecting shaft is provided with a notch which is sunken relative to the rotating section at the limiting section, one surface of the limiting section, which is opposite to the notch, is a limiting plane, two sides of the locking hook piece are respectively sleeved on the limiting sections at two ends of the rotating section, and the locking hook piece is propped against the limiting plane.

Through adopting above-mentioned technical scheme, the latch hook spare is through offseting with spacing plane for can drive the latch hook spare and rotate together when the connecting axle rotates.

Optionally, the latch hook member is provided with a mating hole for sleeving the limiting section, the latch hook member is provided with a first abutting surface and a second abutting surface at the inner wall of the mating hole, the first abutting surface intersects with the second abutting surface and forms an obtuse angle in the mating hole, and the latch hook member can rotate relative to the limiting section through the mating hole until the limiting plane abuts against the first abutting surface or the second abutting surface;

A second reset piece is arranged between the lock hook piece and the lock shell and is used for giving the lock hook piece a trend that the first abutting surface abuts against the limiting plane when rotating, so that the lock hook piece is in the locking position when the lock hook piece and the flip cover release the external force;

one side of the lock hook piece, which is away from the hooking cavity, is provided with a guide inclined plane, the guide inclined plane is subjected to thrust pushing towards the unlocking position, and when the connecting shaft is static relative to the lock shell, the lock hook piece can resist the trend force of the second reset piece, so that the lock hook piece rotates to the second abutting surface to abut against the limiting plane, and the lock hook piece rotates to the unlocking position.

Through adopting above-mentioned technical scheme, when not exerting the effort that drives the latch hook piece and rotate to the unlocking position to flip, lead the inclined plane and can make the relative spacing section of latch hook piece rotate to the unlocking position through receiving thrust to can be when closing the door need not to exert external force to flip, the latch hook piece receives the thrust removal and quick with the hasp lock of hasp.

Optionally, the latch hook piece includes latch arm and connecting seat, the latch arm quantity is two, two the latch arm overlaps respectively and locates on the spacing section at rotation section both ends, the hook establish the chamber form in the latch arm is kept away from the one end of spacing section, the connecting seat can dismantle and connect between two the latch arm.

Through adopting above-mentioned technical scheme, when the tool to lock is installed, two lock arms can be followed two spacing sections one end that keep away from each other and embolia on the spacing section, then link to each other lock arm and connecting seat to improve the convenience of tool to lock assembly.

Optionally, the lock further includes a locking assembly installed between the flip and the recess, where the locking assembly includes a lock cylinder, a lock plate, and a limiting piece, where the lock cylinder is installed on the flip and has an exposed lock hole, the lock plate is connected to one end of the lock cylinder facing the recess, and the lock key matched with the lock cylinder can drive the lock cylinder to rotate by inserting the lock hole, so that the lock plate rotates to a locking position and a free position relative to the flip, and the limiting piece is disposed on the recess and forms a limiting cavity;

When the locking plate is positioned at the free position, the locking plate is always separated from the limiting piece; when the lock hook is positioned at the locking position, the lock plate is rotated from the free position to the locking position, so that the lock plate can be rotated into the limiting cavity to be limited by the limiting piece, and the flip cover is limited to drive the lock hook to rotate to the unlocking position.

Through adopting above-mentioned technical scheme, when driving the lock core through the key and rotating and making the locking plate remove to the free position, can rotate flip, and when the locking plate removes to the closure position, can restrict flip to lock hook spare unblock to improve the theftproof nature of tool to lock.

Optionally, the flip is the mating end respectively with hold the end at the relative both ends, the mating end with the connecting axle cooperation, follow on the mating end in parallel the extension width of connecting axle axis direction is less than hold on the end in parallel the extension width of connecting axle axis direction, just the depressed part shape with flip suits.

Through adopting above-mentioned technical scheme, the cooperation end width reduces in order to practice thrift the cost when reducing the whole weight of tool to lock.

Optionally, the flip cover is detachably connected with the connecting shaft.

Through adopting above-mentioned technical scheme, flip can dismantle the change of being convenient for that connects on the connecting axle flip.

In summary, the present application includes at least one of the following beneficial effects:

1. The flip cover and the lock hook are respectively arranged on two opposite sides of the lock shell, the flip cover and the lock hook are connected through the connecting shaft, and the sealing ring is arranged at the joint of the connecting shaft and the lock shell, so that the tightness of the lock is improved, and wind, rain and dust in the external environment are not easy to enter the container through the lock;

2. The detachable connection between the locking arm and the connecting base can facilitate the cooperation of the locking arm and the limiting section, and the locking arm or the connecting base can be independently replaced when damaged, so that the maintenance cost is reduced.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present application;

FIG. 2 is a schematic view of another embodiment of the present application;

FIG. 3 is a schematic view of a lock housing, a connecting shaft, and a flip cover explosion structure in an embodiment of the application;

FIG. 4 is a schematic diagram of an explosion structure of a flip cover and a connecting bolt according to an embodiment of the application;

FIG. 5 is a schematic view showing the structure of the latch hook member engaged with the connecting shaft according to the embodiment of the present application;

FIG. 6 is a side view of an embodiment of the present application;

fig. 7 is a schematic structural diagram of the cooperation of the limiting section and the cooperation hole in the embodiment of the application.

Reference numerals illustrate: 1. a lock case; 2. a boss; 3. a recessed portion; 4. a connecting shaft; 41. a rotating section; 42. a limiting section; 5. a flip cover; 6. a latch hook member; 61. a locking arm; 62. a connecting seat; 7. a hooking cavity; 8. locking and positioning; 9. unlocking the position; 10. a first reset member; 101. a first torsion spring; 11. a seal ring; 12. a release stop; 13. a limit plane; 14. a mating hole; 15. a first abutment surface; 16. a second abutment surface; 17. a second reset member; 171. a second torsion spring; 18. a guide slope; 19. a locking assembly; 191. a lock core; 192. a locking plate; 193. a limiting piece; 1931. a support base; 1932. a limiting piece; 20. a lock hole; 21. a locking position; 22. a free position; 23. a spacing cavity; 24. a mating end; 25. a grip end; 26. perforating; 27. a mounting base; 28. a connecting bolt; 29. bolt holes; 30. a ring groove; 31. a release stopping groove; 32. a deformation groove.

Detailed Description

The application is described in further detail below with reference to fig. 1-7.

The embodiment of the application discloses a lockset. Referring to fig. 1 and 2, the lock includes a lock case 1, a connection shaft 4, a flip 5, a hook member 6, and a first reset member 10. The lock is arranged on a door body for opening and closing a carriage through the lock shell 1, and a lock catch matched with the lock for locking is arranged on the carriage body of the carriage.

The connecting shaft 4 rotates on the lock shell 1, the flip cover 5 and the lock hook piece 6 are both connected on the connecting shaft 4, so that the flip cover 5 can drive the lock hook piece 6 to rotate, the lock hook piece 6 can rotate to a locking position 8 and an unlocking position 9, the locking position 8 is located at a position close to one end of the lock shell 1, the unlocking position 9 is located at a position close to the middle of the lock shell 1, the lock hook piece 6 can be buckled with a lock catch when rotating to the locking position 8, and the lock hook piece 6 can be unlocked with the lock catch when rotating to the unlocking position 9. The first reset element 10 is arranged between the connecting shaft 4 and the lock shell 1, so that the connecting shaft 4 has a tendency to drive the latch hook element 6 to rotate to the locking position 8.

Wherein the lock case 1 is in a square plate shape, and the middle part of the lock case 1 is recessed from one surface to the opposite surface, so that the recessed part of one surface of the lock case 1 forms a recessed part 3, and the protruding part of the opposite surface of the lock case 1 forms a protruding part 2.

Referring to fig. 3, the connecting shaft 4 includes a rotating section 41 and a limiting section 42, the rotating section 41 is in a shape of a round rod and has one number, the rotating section 41 rotates at the recess 3, the axial direction of the rotating section 41 is parallel to the width direction of the lock case 1, two opposite sides of the recess 3 are respectively penetrated at two ends of the rotating section 41 far away from each other, so that the end of the rotating section 41 penetrates to the other surface of the lock case 1 to be opposite to the protruding part 2, and two opposite sides of the recess 3 are provided with perforations 26 for the rotating section 41 to penetrate. The two limiting sections 42 are semi-cylindrical with the outer diameter identical to that of the rotating section 41, and the two limiting sections 42 are respectively and coaxially integrally formed at two ends of the rotating section 41, which are far away from each other, so that the limiting sections 42 form notches which are sunken relative to the rotating section 41, and the surfaces of the limiting sections 42, which are opposite to the notches, are limiting planes 13.

Referring to fig. 3 and 4, the flip 5 is fitted in the recess 3, the flip 5 is formed with a cavity facing the recess 3, and opposite ends of the flip 5 are a fitting end 24 and a holding end 25, respectively, and the flip 5 is fitted with the rotating section 41 through the fitting end 24. Specifically, the fitting end 24 of the flip cover 5 is welded with a mounting seat 27 sleeved on the outer wall of the rotating section 41, the mounting seat 27 is located in the concave part 3, the mounting seat 27 is provided with a connecting bolt 28 in a sliding manner along the axial direction of the vertical rotating section 41, the rotating section 41 is provided with a bolt hole 29 for the connecting bolt 28 to screw in, and the mounting seat 27 is locked with the rotating section 41 relatively through the connecting bolt 28, so that the flip cover 5 can rotate relative to the lock shell 1 through the rotating section 41. And the two sides of the mating end 24, which are away from each other along the width direction of the lock case 1, respectively abut against the two opposite inner walls of the recess 3, so as to limit the rotation section 41 and limit the rotation section 41 to move along the axis direction thereof.

Referring to fig. 5, the latch hook member 6 includes two latch arms 61 and two connecting seats 62, the number of the latch arms 61 is two, one latch arm 62 is provided with one latch arm 61, the two latch arms 61 are provided with mating holes 14 for sleeving the limiting sections 42, and the two latch arms 61 are respectively sleeved on the limiting sections 42 at two ends of the rotating section 41 through the mating holes 14 and are abutted against the limiting planes 13 of the limiting sections 42. The connecting seat 62 is detachably connected to one end of the two locking arms 61 away from the limiting section 42 through bolts, one end of the locking arms 61 away from the limiting section 42 and the connecting seat 62 are provided with concave parts to jointly form a hooking cavity 7 for buckling and locking, and opposite surfaces of the two locking arms 61 are respectively abutted to opposite ends of the rotating section 41 so as to limit the locking arms 61 to move along the axial direction of the limiting section 42 when the locking arms 61 are matched with the connecting seat 62.

Referring to fig. 2 and 5, the first restoring member 10 is a first torsion spring 101, a coil of the first torsion spring 101 is sleeved on one of the limiting sections 42, a torsion arm at one end of the first torsion spring 101 abuts against the limiting plane 13 of the limiting section 42, and a torsion arm at the opposite end of the first torsion spring 101 abuts against the surface of the lock case 1.

Referring to fig. 5, in order to improve stability of the first torsion spring 101, an end of the limiting section 42 remote from the rotating section 41 has a release stop 12 limiting the release of the first torsion spring 101 from the limiting section 42, and the first torsion spring 101 is limited between the release stop 12 and the lock arm 61. Specifically, the anti-disengaging member 12 is in a disc shape with an outer diameter larger than the coil outer diameter of the first torsion spring 101, and referring to fig. 3, an annular groove 30 is coaxially formed on an arc surface of one end of the limiting section 42, which is far away from the rotating section 41, and the anti-disengaging member 12 is provided with an anti-disengaging groove 31 for sleeving the limiting section 42 and clamping into the annular groove 30. The anti-release member 12 is radially provided with a deformation groove 32 penetrating through the anti-release groove 31 and the circumferential side of the anti-release member 12, and the anti-release member 12 has a certain plasticity and can be deformed by external force, so that when the anti-release member 12 is installed, the anti-release member 12 is sleeved on the limiting section 42 and moves to be opposite to the ring groove 30, and then is broken back to the original position, so that the anti-release member 12 is clamped into the ring groove 30.

Referring to fig. 2 and 6, when the holding end 25 of the flip cover 5 is abutted to the inner bottom surface of the recess 3 toward one side of the recess 3, the flip cover 5 is received in the recess 3, and the locking arm 61 and the connecting seat 62 are located at the locking position 8; when pulling force is applied to the flip 5 to enable the holding end 25 of the flip 5 to rotate out of the concave part 3 away from the concave part 3 against the torsion force of the first torsion spring 101, the flip 5 can drive the locking arm 61 and the connecting seat 62 to rotate to the unlocking position 9 through the connecting shaft 4. After the pulling force applied to the flip 5 is released, the torsion of the first torsion spring 101 drives the limiting section 42 to rotate, so that the flip 5 is stored back into the recess 3 again, and the locking arm 61 and the connecting seat 62 are returned back to the locking position 8 again.

Referring to fig. 2 and 3, further, in order to improve the waterproof performance of the lock, the outer wall of the rotating section 41 is coaxially sleeved with a sealing ring 11, and the outer wall of the rotating section 41 is provided with a caulking groove for the sealing ring 11 to be clamped in, so as to limit the movement of the sealing ring 11. The seal ring 11 is made of rubber, and in this embodiment, the seal ring 11 abuts against the outer wall of the boss 2 to seal the gap between the through hole 26 and the rotating section 41. In other embodiments, the sealing ring 11 may be located in the recess 3 and against the inner wall of the recess 3, or the sealing ring 11 is disposed at the opposite position of the rotation section 41 to the protrusion 2 and the recess 3.

With reference to fig. 3 and 4, further, in order to improve the anti-theft performance of the lock, the lock further includes a locking assembly 19 mounted between the flip cover 5 and the recess 3, so that the flip cover 5 can be locked relative to the recess 3 when being received in the recess 3. Specifically, the locking assembly 19 includes a lock cylinder 191, a lock tab 192, and a stop 193. The lock cylinder 191 is arranged at the part of the flip 5 close to the holding end 25, the lock cylinder 191 is matched with a lock key, the lock cylinder 191 is provided with a lock hole 20 for the lock key to be matched in a plugging manner so as to drive the lock cylinder 191 to rotate relative to the flip 5, and the lock hole 20 is exposed at one end of the lock cylinder 191, which is away from the concave part 3.

The locking plate 192 fixed mounting is in the one end of lock core 191 towards depressed part 3, and lock core 192 is arranged in the cavity of flip 5, can drive lock core 192 and rotate to locking position 21 and free position 22 when lock core 191 cooperation drive lock core 191, locking position 21 is located the position that is close to rotation section 41, and free position 22 is located the position that is close to the middle part of depressed part 3, and lock core 191 is in locking position 21 promptly to forward rotation 90 when lock core 192 is located free position 22, and lock core 191 is in locking position 21 promptly to reverse rotation 90 when lock core 192 is located locking position 21.

The limiting member 193 comprises a supporting seat 1931 and a limiting plate 1932, the supporting seat 1931 is fixed on the inner bottom surface of the recess 3, the limiting plate 1932 is integrally formed on one side of the supporting seat 1931, and a gap is formed between the limiting plate 1932 and the inner bottom surface of the recess 3 to form a limiting cavity 23.

Referring to fig. 3 and 4, when the lock piece 192 is in the free position 22, the lock piece 192 is separated from the stopper 1932 without interference when the cover 5 is rotated to any position. Referring to fig. 2, when the lock arm 61 is located at the locking position 8, that is, the flip 5 is received in the recess 3, the lock piece 192 is turned from the free position 22 to the locked position 21, so that the lock piece 192 is turned into the limiting cavity 23, the limiting piece 1932 is located at one side of the lock piece 192 away from the inner bottom surface of the recess 3, and at this time, the gap between the lock piece 192 and the limiting piece 1932 is insufficient to support the holding end 25 of the flip 5 to turn out of the recess 3, so as to limit the flip 5 to drive the lock arm 61 to rotate to the unlocking position 9, so that the lock core 191 needs to be unlocked before the lock is unlocked from the lock by turning the flip 5.

Referring to fig. 6 and 7, further, in order to improve the convenience of the lock and the lock catch, the mating hole 14 on the locking arm 61 is in a fan shape with a central angle greater than 180 °, and two inner walls of the locking arm 61 adjacent to the center of the circle in the mating hole 14 are respectively a first abutting surface 15 and a second abutting surface 16, so that the limiting section 42 can rotate in the mating hole 14 until the limiting plane 13 abuts against the first abutting surface 15 or the second abutting surface 16, and in order to improve the smoothness of rotation, the mating hole 14 will expand outwards at the intersection of the cambered surface and the first abutting surface 15 and the intersection of the cambered surface and the second abutting surface 16. The side of the connecting seat 62 facing away from the hooking cavity 7 is cut to form a guide inclined surface 18, and the guide inclined surface 18 gradually extends in an inclined direction from the unlocking position 9 to the locking position 8 to the direction approaching the lock shell 1. A second restoring member 17 is arranged between one of the locking arms 61 and the lock housing 1, so that the locking arm 61 has a tendency to rotate until the limiting plane 13 abuts against the first abutment surface 15.

When the lock is in a natural state and the flip 5 and the lock arm 61 are not acted by other external forces, the flip 5 is accommodated in the concave part 3, the lock arm 61 is acted by the elastic force of the second reset piece 17 to enable the limiting plane 13 to abut against the first abutting surface 15, and the lock arm 61 is located at the locking position 8. When the flip cover 5 is pulled outwards to drive the locking arm 61 to rotate, the first abutting surface 15 always abuts against the limiting plane 13, and the locking arm 61 is located opposite to the limiting section 42. When the flip cover 5 and the lock shell 1 are locked through the locking piece 192, the guide inclined surface 18 is pushed to approach the unlocking position 9, so that the connecting seat 62 can resist the trend force of the second reset piece 17 to drive the locking arm 61 to rotate relative to the limiting section 42, the locking arm 61 gradually rotates from the locking position 8 to the unlocking position 9, and when the locking arm 61 is located in the unlocking position 9, the limiting plane 13 is abutted against the second abutting surface 16.

Therefore, when the door body matched with the lock rotates inwards to be closed, the flip cover 5 does not need to be pulled, the guide inclined surface 18 is firstly abutted against the lock catch along with the rotation of the door body, the guide inclined surface 18 is pushed to the unlocking position 9 by the lock catch in the rotation process of the door body, the connecting seat 62 can be pushed to the unlocking position 9 by the lock catch until the lock catch enters the hooking cavity 7 from one side of the connecting seat 62, which is close to the locking position 8, and then the lock arm 61 is reset to the locking position 8 by the trend force of the second reset piece 17, so that the lock arm 61 and the connecting seat 62 jointly lock the lock catch, and the lock can be buckled with the lock catch no matter whether the flip cover 5 is locked with the lock shell 1 or not. And when the lock is buckled with the lock catch, the door body is pulled outwards, so that the lock catch is more abutted against the inner wall of the hooking cavity 7 and cannot be separated from the lock arm 61 and the connecting seat 62.

Referring to fig. 2 and 6, the second restoring member 17 is a second torsion spring 171, a coil of the second torsion spring 171 is sleeved on the other limiting section 42 except for being matched with the first torsion spring 101, a torsion arm at one end of the second torsion spring 171 is hooked on the locking arm 61 of the corresponding limiting section 42, a torsion arm at the other end of the second torsion spring 171 is abutted on the lock case 1, and the limiting section 42 corresponding to the second torsion spring 171 is also matched with the anti-release member 12 so as to limit the second torsion spring 171 between the anti-release member 12 and the torsion arm. In addition, the guide inclined surface 18 will wear after being in interference fit with the lock catch for a long time, and the guide inclined surface 18 can be replaced by replacing the connecting seat 62.

Referring to fig. 1 and 3, further, the extension width of the mating end 24 of the flip 5 along the axis direction of the parallel connection shaft 4 is smaller than the extension width of the holding end 25 of the flip 5 along the axis direction of the parallel connection shaft 4, and the shape of the corresponding part of the recess 3 and the flip 5 is adapted to the shape of the flip 5, so that the material consumption can be reduced under the holding effect of the flip 5, and the weight of the lock is reduced and the cost is saved.

The implementation principle of the lockset provided by the embodiment of the application is as follows: when the flip cover 5 is accommodated in the recess 3, the connecting shaft 4 is acted by the torsion of the first torsion spring 101, the locking arm 61 is acted by the torsion of the second torsion spring 171, so that the locking arm 61 is located on the locking position 8, and the locking arm 61 and the connecting seat 62 can be buckled with the lock catch. The flip 5 is pulled outwards, and the flip 5 drives the locking arm 61 to rotate together through the connecting shaft 4, so that the locking arm 61 can rotate from the locking position 8 to the unlocking position 9 to be separated from the lock catch, and unlocking is performed.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (10)

1. A lock, comprising:

A lock case (1) having a portion recessed from one surface toward the other surface, the opposite surfaces of the lock case (1) being formed with a protruding portion (2) and a recessed portion (3), respectively;

The connecting shaft (4) rotates on the concave part (3), and two opposite ends of the connecting shaft penetrate through the concave part (3) and are opposite to the convex part (2);

The flip cover (5) is matched in the concave part (3) and is connected with the connecting shaft (4);

The lock hook (6) is provided with a hooking cavity (7) for buckling the lock catch, the hooking cavity is connected to the connecting shaft (4), the connecting position is located on the part, opposite to the protruding part (2), of the connecting shaft (4), and the flip (5) rotates to drive the lock hook (6) to rotate to a locking position (8) or an unlocking position (9) through the connecting shaft (4);

The first reset piece (10) is arranged between the connecting shaft (4) and the lock shell (1) and is used for giving a trend that the connecting shaft (4) rotates until the lock hook piece (6) reaches the locking position (8).

2. A lock according to claim 1, wherein: the outer wall of the connecting shaft (4) is sleeved with a sealing ring (11) which is propped against the outer wall of the protruding part (2) and/or the inner wall of the recessed part (3).

3. A lock according to claim 1, wherein: the first reset piece (10) comprises a first torsion spring (101) sleeved on the connecting shaft (4), a torsion arm at one end of the first torsion spring (101) is limited relative to the connecting shaft (4), and a torsion arm at the other end of the first torsion spring (101) is propped against the lock shell (1).

4. A lock according to claim 3, wherein: the end of the connecting shaft (4) is provided with a release stopping piece (12), and the first torsion spring (101) is limited between the locking hook piece (6) and the release stopping piece (12).

5. A lock according to claim 1, wherein: the connecting shaft (4) comprises a rotating section (41) and a limiting section (42), the rotating section (41) rotates on the concave part (3), the limiting section (42) is arranged at two opposite ends of the rotating section (41), and the limiting section (42) is positioned outside the concave part (3) and opposite to the convex part (2); the connecting shaft (4) forms a notch which is sunken relative to the rotating section (41) at the position of the limiting section (42), one surface of the limiting section (42) opposite to the notch is a limiting plane (13), two sides of the locking hook piece (6) are respectively sleeved on the limiting section (42) at two ends of the rotating section (41), and the locking hook piece (6) is propped against the limiting plane (13).

6. A lock according to claim 5, wherein: the locking hook (6) is provided with a matching hole (14) for sleeving the limiting section (42), the inner wall of the matching hole (14) of the locking hook (6) is provided with a first abutting surface (15) and a second abutting surface (16), the first abutting surface (15) is intersected with the second abutting surface (16) and forms an obtuse angle in the matching hole (14), and the locking hook (6) can rotate relative to the limiting section (42) through the matching hole (14) until the limiting plane (13) abuts against the first abutting surface (15) or the second abutting surface (16);

A second reset piece (17) is arranged between the lock hook piece (6) and the lock shell (1), and the second reset piece (17) is used for giving the lock hook piece (6) a tendency that the first abutting surface (15) abuts against the limiting plane (13), so that the lock hook piece (6) is positioned at the locking position (8) when the external force action of the lock hook piece (6) and the flip (5) is released;

One side of the latch hook (6) deviating from the hooking cavity (7) is provided with a guide inclined plane (18), the guide inclined plane (18) is pushed to be close to the unlocking position (9) and when the connecting shaft (4) is static relative to the lock shell (1), the latch hook (6) can resist the trend force of the second reset piece (17) to enable the latch hook (6) to rotate to the second abutting surface (16) to abut against the limiting plane (13), so that the latch hook (6) rotates to the unlocking position (9).

7. A lock according to claim 5, wherein: the locking hook component (6) comprises two locking arms (61) and connecting bases (62), the number of the locking arms (61) is two, the two locking arms (61) are respectively sleeved on the limiting sections (42) at two ends of the rotating section (41), the hooking cavity (7) is formed at one end, far away from the limiting sections (42), of the locking arms (61), and the connecting bases (62) are detachably connected between the two locking arms (61).

8. A lock according to claim 1, wherein: the lock further comprises a locking assembly (19) arranged between the flip cover (5) and the concave part (3), the locking assembly (19) comprises a lock cylinder (191), a lock plate (192) and a limiting piece (193), the lock cylinder (191) is arranged on the flip cover (5) and is provided with an exposed lock hole (20), the lock plate (192) is connected to one end, facing the concave part (3), of the lock cylinder (191), the lock key matched with the lock cylinder (191) can drive the lock cylinder (191) to rotate through being inserted into the lock hole (20), so that the lock plate (192) rotates to a locking position (21) and a free position (22) relative to the flip cover (5), and the limiting piece (193) is arranged on the concave part (3) and is provided with a limiting cavity (23);

when the locking piece (192) is positioned at the free position (22), the locking piece (192) is always separated from the limiting piece (193); when the latch hook (6) is located at the locking position (8), the locking piece (192) is rotated from the free position (22) to the locking position (21), so that the locking piece (192) can be rotated into the limiting cavity (23) to be limited by the limiting piece (193), and the flip (5) is limited to drive the latch hook (6) to rotate to the unlocking position (9).

9. A lock according to claim 1, wherein: the flip (5) is relative both ends be mating end (24) and hold end (25) respectively, mating end (24) with connecting axle (4) cooperation, on mating end (24) follow the parallelism connecting axle (4) axis direction extend the width be less than on holding end (25) follow the parallelism connecting axle (4) axis direction extend the width, just recess (3) shape with flip (5) adaptation.

10. A lock according to claim 1, wherein: the flip (5) is detachably connected with the connecting shaft (4).