Indirect locking coded lock and use method thereof

Abstract

The invention discloses an indirectly-locked coded lock and a using method thereof, and relates to the technical field of mechanical coded locks, the indirectly-locked coded lock comprises a lock body and a lock rope, and an insertion hole is formed in the lock body; one end of the lock rope is provided with a plug, the other end of the lock rope is provided with a ring, the maximum sectional dimension of the plug is smaller than the minimum sectional dimension of the ring, and the maximum sectional dimension of the lock body is larger than the minimum sectional dimension of the ring; the plug can be inserted into the insertion hole, and the lock body can lock and unlock the plug in the insertion hole. The purpose of locking the to-be-locked object can be achieved through the separable lock rope and the lock body, and the lock is suitable for multiple use scenes and convenient and flexible to use.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical password locks, and in particular to an indirect locking password lock and a use method thereof. Background Art

[0002] Generally, a general lock is locked by directly locking the lock gate. For example, a padlock is locked by directly locking the chain, cable ring, etc. through a U-shaped lock beam, so that the U-shaped lock beam is directly closed and the locked object cannot be pulled out to achieve the purpose of locking. However, the application scenarios of the above locks are prioritized and the use is not flexible. Summary of the invention

[0003] The purpose of the present invention is to provide an indirect locking combination lock and a method of using the same, so as to solve the problems existing in the above-mentioned prior art and improve the flexibility of using the combination lock.

[0004] To achieve the above object, the present invention provides the following solutions: The present invention provides an indirect locking password lock, comprising: A lock body, wherein the lock body is provided with an insertion hole; A locking rope, wherein one end of the locking rope is configured with a plug and the other end is configured with a ring, the maximum cross-sectional dimension of the plug is smaller than the minimum cross-sectional dimension of the ring, and the maximum cross-sectional dimension of the lock body is larger than the minimum cross-sectional dimension of the ring; the plug can be inserted into the socket, and the lock body can lock and unlock the plug in the socket.

[0005] Preferably, the locking rope is a steel cable or a chain.

[0006] Preferably, the lock body comprises a shell assembly, a password handwheel assembly and a lock gate; one end of the shell assembly is provided with the jack, and the other end is open, part of the password handwheel assembly is assembled in the shell assembly, and the remaining part of the password handwheel assembly is located on the outside of the open end of the shell assembly, the password handwheel assembly can be locked with the shell assembly and limit the relative rotational freedom of the two; the password handwheel assembly can also be unlocked from the shell assembly so that the password handwheel assembly and the shell assembly can rotate relative to each other under the action of external force, the password handwheel assembly and the lock gate are transmission connected via a lock tongue, the lock gate can only be movably arranged in the shell assembly along a first straight line direction, and the password handwheel assembly can drive the lock through the lock tongue when rotating. The gate moves along a first straight line direction, and a special-shaped hole extending along the first straight line direction is provided on the lock gate, one end of the special-shaped hole is a large end, and the other end is a small end, and the plug is sequentially constructed with a limiting portion and a shrinking neck portion from the end along a direction away from the end of the plug, the cross-sectional dimension of the shrinking neck portion is smaller than that of the limiting portion, the cross-sectional dimension of the shrinking neck portion is smaller than that of the small end, the cross-sectional dimension of the limiting portion is larger than that of the small end but smaller than that of the large end, and the lock gate has two states, one is an unlocked state and the other is a locked state, in which in the unlocked state, the large end of the special-shaped hole faces the jack, and the plug can be inserted from the large end of the special-shaped hole to the shrinking neck portion and is located in the special-shaped hole; in the locked state, the small end of the special-shaped hole faces the jack.

[0007] Preferably, the lock tongue includes a transmission disk and a transmission column, one side of the transmission disk cooperates with the password handwheel assembly so that the password handwheel assembly can drive the transmission disk to rotate, and the transmission column is eccentrically arranged on the other side of the transmission disk, and a transmission hole extending in a direction perpendicular to the first straight line is opened on the lock gate, and one end of the transmission column away from the transmission disk is inserted into the transmission hole, and the password handwheel assembly drives the transmission column to rotate eccentrically and then drives the lock gate to extend along the first straight line direction.

[0008] Preferably, it further comprises an assembly bracket, wherein the assembly bracket is detachably connected to the external support body, and the lock body is detachably connected to the assembly bracket.

[0009] Preferably, it also includes an indirect fixing sleeve, which is detachably mounted on the lock body, and the indirect fixing sleeve is detachably connected to the assembly bracket. Both sides of the indirect fixing sleeve are configured with hollow portions, one end of the indirect fixing sleeve is open, and the other end is provided with a through hole, and when the indirect fixing sleeve is mounted on the lock body, the through hole is opposite to the insertion hole.

[0010] Preferably, the assembly bracket is constructed with a slide groove, a first spring cavity is constructed on an inner wall of one side of the slide groove, a first spring is arranged in the first spring cavity, a clamping piece is arranged in the slide groove, the clamping piece is fixedly connected to one end of a pressure rod, the other end of the pressure rod extends to a side of the assembly bracket, the pressure rod and the assembly bracket are slidably connected, and the indirect fixing sleeve is constructed with a slider outside, the slider can slide into the slide groove from one end of the slide groove, and a clamping groove is arranged on a side of the slider facing the clamping piece, the slider is located in the slide groove and the pressure rod is not subjected to external force, the clamping piece extends into the clamping groove under the elastic force of the first spring to limit the movement of the slider in the slide groove, and when the pressure rod is subjected to pressure toward the clamping piece, the clamping piece can overcome the elastic force of the first spring and move out of the clamping groove to release the restriction on the freedom of movement of the slider.

[0011] Preferably, a portion of the password handwheel assembly located outside the open end of the housing assembly is provided with anti-slip grooves.

[0012] Preferably, the large end contour and the small end contour of the special-shaped hole are both arc-shaped, and the two ends of the large end contour are connected with the two ends of the small end contour.

[0013] The present invention also provides a method for using the indirect locking combination lock as described above, comprising: wrapping a lock rope around an object to be locked; Pass the plug from one side of the ring to the other side; inserting a plug into the lock body; The lock body is used to lock the plug in the socket.

[0014] Compared with the prior art, the present invention has achieved the following technical effects: The present invention can achieve the purpose of locking the object to be locked by means of a detachable lock rope and a lock body, is adaptable to a variety of usage scenarios, and is convenient and flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the structure of an indirect locking password lock provided by an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the structure of the middle lock rope; Figure 3 for Figure 2 The enlarged view of point A in the middle; Figure 4 for Figure 1 Exploded view of the middle lock body; Figure 5 for Figure 4 Structural explosion diagram of the password handwheel assembly; Figure 6 The structural explosion diagram of the lock gate and the lock tongue; Figure 7 is a cross-sectional view of the lock body; Figure 8 It is a structural schematic diagram of the positioning wheel push block; Fig. 9 It is a schematic diagram of the structure of the positioning wheel push block and the central shaft; Fig.10 A schematic diagram of the structure of an indirect locking combination lock according to another embodiment of the present invention; Fig.11 for Fig.10 A schematic diagram of the structure of the cooperation between the middle assembly bracket and the indirect fixing sleeve; Fig.12 for Fig.11 A schematic diagram of the structure of the cooperation between the intermediate fixing sleeve and the clamp, the pressure rod and the first spring; Fig.13 for Fig.11 A schematic diagram of the structure of the intermediate fixing sleeve; In the figure: 1-lock body; 2-lock rope; 3-assembly bracket; 4-indirect fixing sleeve; 11-housing assembly; 12-locking gate; 13-locking tongue; 14-handwheel assembly; 15-rotating assembly; 16-jack; 21-ring; 22-plug; 31-sliding groove; 32-card; 33-pressure rod; 34-first spring; 41-hollow portion; 42-through hole; 43-sliding head; 44-card slot; 111-housing; 112-handwheel holder; 121-special-shaped hole; 122-transmission hole; 131-transmission plate; 132-transmission column; 1211-large end; 1212-small end; 151-handwheel code frame; 152-handwheel housing; 141-positioning wheel push block; 142-code wheel; 143-center axis; 144-center axis spring; 221-shrinkage neck; 222-limiting part; 1411-gate convex; 1412-protrusion; 1413-limiting platform; 1431-limiting convex ring. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Combine the following Figures 1 to 13 , describing an embodiment of the present invention.

[0020] Embodiment 1 The present invention provides a password lock for indirect locking, such as Figure 1 , Figure 2 and Figure 7 As shown, it comprises: a lock body 1 and a lock rope 2, the lock body 1 is configured with a socket 16; one end of the lock rope 2 is configured with a plug 22, and the other end is configured with a ring 21, the maximum cross-sectional dimension of the plug 22 is smaller than the minimum cross-sectional dimension of the ring 21, and the maximum cross-sectional dimension of the lock body 1 is larger than the minimum cross-sectional dimension of the ring 21; the plug 22 can be inserted into the socket 16, and the lock body 1 can lock and unlock the plug 22 in the socket 16. It can be understood that since the invention provides a mechanical password lock, the lock body 1 has the function of unlocking the plug 22 only after the password is entered.

[0021] Usage: wrap the lock rope 2 around the object to be locked; pass the plug 22 from one side of the ring 21 to the other side; insert the plug 22 into the lock body 1; use the lock body 1 to lock the plug 22 in the socket 16. In order to allow the lock rope 2 to pass from one side of the ring 21 to the other side, the lock rope 2 needs to have the ability to bend, so that the plug 22 can be passed from one side of the ring 21 to the other side, and the lock rope 2 with the ability to bend can adapt to more scenarios.

[0022] The present invention can achieve the purpose of locking the object to be locked by means of the detachable lock rope 2 and the lock body 1, and is applicable to many usage scenarios, and is convenient and flexible to use. In addition, since the lock rope 2 and the lock body 1 are detachable, the lock rope 2 and the lock body 1 can be replaced with accessories separately. For example, the lock rope 2 can be configured with multiple different lengths to adapt to different scenarios, for example, one each of 20 cm, 30 cm, 50 cm, and 100 cm. In addition, when one component of the lock rope 2 and the lock body 1 is damaged, it is convenient to replace the component separately.

[0023] For example, the lock rope 2 can be passed through the wheel hub to lock the wheel, and electric vehicles, bicycles, etc. can also be locked on poles or some pillars. In addition, it can also be used on doors with door handles that open in opposite directions.

[0024] In some embodiments, the locking rope 2 is a steel cable or a chain.

[0025] The steel cables or chains in this embodiment have certain bending ability, good strength and high stability.

[0026] In some embodiments, such as Figure 4~Figure 7 As shown, the lock body 1 includes a shell component 11, a password handwheel component and a lock gate 12; one end of the shell component 11 is provided with a socket 16, and the other end is open, part of the password handwheel component is assembled in the shell component 11, and the remaining part of the password handwheel component is located on the outside of the open end of the shell component 11, the password handwheel component can be locked with the shell component 11 and limit the relative rotational freedom of the two; the password handwheel component can also be unlocked from the shell component 11 so that the password handwheel component and the shell component 11 can rotate relative to each other under the action of an external force, the password handwheel component and the lock gate 12 are connected by a lock tongue 13, the lock gate 12 is only movably arranged in the shell component 11 along a first straight line direction, and when the password handwheel component rotates, the lock gate 12 can be driven to move along the first straight line direction through the lock tongue 13, and the lock gate 12 is provided with a lock tongue 13 along the first straight line direction. The plug 22 is provided with a special-shaped hole 121 extending therefrom, one end of the special-shaped hole 121 being a large end 1211 and the other end being a small end 1212. The plug 22 is sequentially constructed with a limiting portion 222 and a shrinking neck portion 221 from the end thereof in a direction away from the end thereof. The cross-sectional dimension of the shrinking neck portion 221 is smaller than that of the limiting portion 222, the cross-sectional dimension of the shrinking neck portion 221 is smaller than that of the small end 1212, the cross-sectional dimension of the limiting portion 222 is larger than that of the small end 1212 but smaller than that of the large end 1211. The lock gate 12 has two states, one is an unlocked state and the other is a locked state. In the unlocked state, the large end 1211 of the special-shaped hole 121 is opposite to the insertion hole 16, and the plug 22 can be inserted from the large end 1211 of the special-shaped hole 121 to the shrinking neck portion 221 and is located in the special-shaped hole 121; in the locked state, the small end 1212 of the special-shaped hole 121 is opposite to the insertion hole 16.

[0027] The lock body 1 provided in this embodiment can achieve the purpose of locking and unlocking the plug 22 .

[0028] Specifically, during use, when locking is required, the password handwheel assembly is manually rotated and the lock gate 12 is driven to move along the first straight line direction until the large end 1211 of the special-shaped hole 121 is opposite to the socket 16, the plug 22 is inserted into the socket 16 and the neck portion 221 is located at the large end 1211 of the special-shaped hole 121, the password handwheel assembly is manually rotated and the lock gate 12 is driven to move along the first straight line direction until the small end 1212 of the special-shaped hole 121 is opposite to the socket 16, at this time, the neck portion 221 is located at the small end 1212, and because the cross-sectional size of the lower end is small, therefore, under the limiting action of the limit portion 222, the plug 22 cannot be pulled out of the socket 16, and finally the password can be scrambled.

[0029] When unlocking is required, the correct password is input, and then the password handwheel assembly is rotated to drive the lock gate 12 to move along the first straight line direction until the large end 1211 of the special-shaped hole 121 faces the socket 16, and the plug 22 is pulled out from the socket 16.

[0030] In some embodiments, such as Figure 6 As shown, the lock tongue 13 includes a transmission disk 131 and a transmission column 132. One side of the transmission disk 131 cooperates with the password handwheel assembly so that the password handwheel assembly can drive the transmission disk 131 to rotate. The other side of the transmission disk 131 is eccentrically provided with a transmission column 132. A transmission hole 122 extending in a direction perpendicular to the first straight line is opened on the lock gate 12. One end of the transmission column 132 away from the transmission disk 131 is inserted into the transmission hole 122. The password handwheel assembly drives the transmission column 132 to rotate eccentrically and then drives the lock gate 12 to extend along the first straight line direction.

[0031] The locking tongue 13 provided in this embodiment has a simple structure and a simple and clear mechanical principle.

[0032] In some embodiments, such as Figure 10~Figure 13 As shown, the embodiment of the present invention further includes an assembly bracket 3 , which is detachably connected to the external support body, and the lock body 1 is detachably connected to the assembly bracket 3 .

[0033] The assembly bracket 3 in this embodiment can be installed on a carrier such as a vehicle, and the carrier can be a bicycle, an electric vehicle, etc. For example, it can be installed on the seat tube of a bicycle to achieve the purpose of carrying the lock with the vehicle. Since the lock body 1 can be detachably connected to the assembly bracket 3, the lock body 1 can also be removed from the assembly bracket 3 and used alone with the lock rope 2.

[0034] In some embodiments, the embodiments of the present invention further include an indirect fixing sleeve 4, which is detachably mounted on the outside of the lock body 1, and is detachably connected to the assembly bracket 3. Hollow portions 41 are constructed on both sides of the indirect fixing sleeve 4, and one end of the indirect fixing sleeve 4 is open, and a through hole 42 is provided at the other end. When the indirect fixing sleeve 4 is mounted on the outside of the lock body 1, the through hole 42 is opposite to the insertion hole 16.

[0035] This embodiment enables the lock body 1 to be detachably connected to the assembly bracket 3 by adding an indirect fixing sleeve 4, and the lock body 1 and the indirect fixing sleeve 4 are connected in a sleeve manner, so that there is no additional structure outside the lock body 1 to cooperate with the assembly bracket 3, so that the lock body 1 still has a beautiful appearance when used alone, without an additional protrusion 1412 structure. Of course, in order to make the lock body 1 and the indirect fixing sleeve 4 more stably connected, a conventional buckle structure can also be set on the lock body 1 and the indirect fixing sleeve 4. After the lock body 1 is placed in the indirect fixing sleeve 4, the lock body 1 and the indirect fixing sleeve 4 are connected through the buckle structure. Of course, the size of the part of the buckle structure set on the lock body 1 should be as small as possible to avoid the buckle structure from having too much adverse effect on the appearance or feel of the lock body 1.

[0036] In addition, in order to prevent the indirect fixing sleeve 4 and the outer shell assembly 11 from slipping when the password handwheel assembly is rotated, hollow portions 41 are constructed on both sides of the indirect fixing sleeve 4. The hollow portion 41 is specifically a hole. The user's fingers can directly contact the outer wall of the outer shell assembly 11 through the hollow portion 41, and then stop the outer shell assembly 11 by directly pinching the outer shell assembly 11.

[0037] In some embodiments, a slide groove 31 is configured on the assembly bracket 3, a first spring 34 cavity is configured on one side inner wall of the slide groove 31, a first spring 34 is arranged in the first spring 34 cavity, a clamp 32 is arranged in the slide groove 31, the clamp 32 is fixedly connected to one end of a pressure rod 33, the other end of the pressure rod 33 extends to one side of the assembly bracket 3, the pressure rod 33 and the assembly bracket 3 are slidably connected, and a slider 43 is configured on the outside of the indirect fixing sleeve 4, and the slider 43 can slide from the slide groove 3 1 slides into the slide groove 31, and a slot 44 is provided on the side of the slider 43 facing the clamping member 32. When the slider 43 is located in the slide groove 31 and the pressure rod 33 is not subjected to external force, the clamping member 32 extends into the slot 44 under the elastic force of the first spring 34 to limit the movement of the slider 43 in the slide groove 31. When the pressure rod 33 is subjected to pressure toward the clamping member 32, the clamping member 32 can overcome the elastic force of the first spring 34 and move out of the slot 44 to release the restriction on the freedom of movement of the slider 43.

[0038] This embodiment realizes the detachable connection between the indirect fixing sleeve 4 and the assembly bracket 3 .

[0039] In some embodiments, a portion of the password handwheel assembly located outside the open end of the housing assembly is provided with anti-slip grooves.

[0040] This embodiment facilitates holding the portion of the password handwheel assembly located on the outside to apply torque to the password handwheel assembly for rotation.

[0041] Specifically, Figure 4 As shown, the password handwheel assembly includes a rotating assembly, and the rotating assembly 15 includes a handwheel password frame 151 located inside the housing assembly 11 and a handwheel shell 152 located outside the housing assembly 11. The handwheel shell 152 and the handwheel password frame 151 are fixedly connected by two bolts so that rotating the handwheel shell 152 can drive the handwheel password frame 151 to rotate. The handwheel password frame 151 is constructed with a structure for placing the password handwheel assembly.

[0042] The password handwheel assembly also includes a handwheel assembly 14, which includes a positioning wheel push block 141, a password wheel 142, a central shaft 143 and a central shaft spring 144. One end of the positioning wheel push block 141 is configured with a triangular gate protrusion 1411. The housing assembly 11 includes a housing 111 and a handwheel holder 112 disposed inside the housing 111. The upper edge of the handwheel holder 112 is provided with a first notch or a first groove that matches the gate protrusion 1411. After the gate protrusion 1411 extends into the first notch or the first groove, the circumferential position of the handwheel holder 112 and the password handwheel assembly is locked, thereby preventing the password handwheel assembly from being relative to the handwheel holder 112 (the handwheel holder 112 belongs to the outer The outer wall of the three code wheels 142 is formed with numbers 0 to 9, and a second notch or a second groove is formed on the side of the code wheel 142 facing the gate protrusion 1411, and a protrusion 1412 matching the second notch or the second groove is formed on the positioning wheel push block 141, and a central shaft 143 is provided in the middle of the code wheel 142, and the central shaft 143 can move along the axial direction of the code wheel 142, and a limiting convex ring 1431 is formed at one end of the central shaft 143, and a central shaft spring 144 is sleeved on the central shaft 143, and one end of the central shaft spring 144 contacts one side of the limiting convex ring 1431, and the other end contacts the code wheel 142 contacts, the axial position of the password wheel 142 does not change, the positioning wheel push block 141 can move in a direction parallel to the axial direction of the password wheel 142, and the bottom of the positioning wheel push block 141 is provided with a limit platform 1413 cooperating with the limit convex ring 1431, and the end of the limit convex ring 1431 away from the central axis spring 144 is against the limit platform 1413. Under normal circumstances, under the action of the elastic force of the central axis spring 144, the positioning wheel push block 141 is subjected to a force moving toward the first notch or the first groove. Therefore, when the password handwheel assembly is rotated into place, the positioning wheel push block 141 can move until the gate protrusion 1411 extends into the first notch or the first groove, and then the password wheel 1 is disrupted. 42, so that the second notch or the second groove and the protrusion 1412 are misaligned, so that the positioning wheel push block 141 cannot move in the direction away from the first notch or the first groove. When it is necessary to unlock, that is, by rotating the password wheel 142 to the correct password, the second notch or the second groove is opposite to the protrusion 1412. At this time, the password handwheel assembly is rotated. Due to the triangular structure of the gate protrusion 1411, the gate protrusion 1411 can be subjected to a component force moving in the direction away from the first notch or the first groove, so that the gate protrusion 1411 can move out of the first notch or the first groove. At this time, the protrusion 1412 moves into the second notch or the second groove and completes the unlocking of the plug 22.

[0043] The above only provides one implementation method of a password handwheel assembly. In the actual application example, the password handwheel assembly only needs to be able to achieve the function of circumferentially limiting and releasing the limit of the housing assembly 11 and the password handwheel assembly. The present invention does not limit the specific structure of the password handwheel assembly.

[0044] In some embodiments, the contours of the large end 1211 and the small end 1212 of the special-shaped hole 121 are both arc-shaped, and both ends of the contour of the large end 1211 and the two ends of the contour of the small end 1212 are connected.

[0045] Embodiment 2 The present invention also provides a method for using the indirect locking combination lock as described in the above embodiment, comprising: wrapping a lock rope 2 around an object to be locked; Insert the plug 22 from one side of the ring 21 to the other side; Insert the plug 22 into the lock body 1; The lock body 1 is used to lock the plug 22 in the socket 16 .

[0046] This embodiment has all the advantages of the above embodiments, which will not be described in detail here.

[0047] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An indirect locking password lock, characterized in that: include: A lock body, wherein the lock body is provided with an insertion hole; A locking rope, wherein one end of the locking rope is configured with a plug and the other end is configured with a ring, the maximum cross-sectional dimension of the plug is smaller than the minimum cross-sectional dimension of the ring, and the maximum cross-sectional dimension of the lock body is larger than the minimum cross-sectional dimension of the ring; the plug can be inserted into the socket, and the lock body can lock and unlock the plug in the socket.

2. The indirect locking combination lock according to claim 1, characterized in that: The locking rope is a steel cable or a chain.

3. The indirect locking combination lock according to claim 1, characterized in that: The lock body comprises a shell assembly, a password handwheel assembly and a lock gate; one end of the shell assembly is provided with the jack, and the other end is open; part of the password handwheel assembly is assembled in the shell assembly, and the remaining part of the password handwheel assembly is located on the outside of the open end of the shell assembly; the password handwheel assembly can be locked with the shell assembly and limit the relative rotational freedom of the two; the password handwheel assembly can also be unlocked from the shell assembly so that the password handwheel assembly and the shell assembly can rotate relative to each other under the action of external force; the password handwheel assembly and the lock gate are connected in transmission through a lock tongue; the lock gate can only be movably arranged in the shell assembly along a first straight line direction; when the password handwheel assembly rotates, the lock gate can be driven along the first straight line direction through the lock tongue The lock gate is provided with a special-shaped hole extending along the first straight line direction, one end of the special-shaped hole is a large end, and the other end is a small end. The plug is sequentially constructed from the end along the direction away from the end of the plug with a limiting portion and a shrinking neck portion, the cross-sectional size of the shrinking neck portion is smaller than that of the limiting portion, the cross-sectional size of the shrinking neck portion is smaller than that of the small end, the cross-sectional size of the limiting portion is larger than that of the small end but smaller than that of the large end. The lock gate has two states, one is an unlocked state and the other is a locked state. In the unlocked state, the large end of the special-shaped hole faces the jack, and the plug can be inserted from the large end of the special-shaped hole to the shrinking neck portion and is located in the special-shaped hole; in the locked state, the small end of the special-shaped hole faces the jack.

4. The indirect locking combination lock according to claim 3, characterized in that: The lock tongue includes a transmission disk and a transmission column. One side of the transmission disk cooperates with the password handwheel assembly so that the password handwheel assembly can drive the transmission disk to rotate. The transmission column is eccentrically arranged on the other side of the transmission disk. A transmission hole extending in a direction perpendicular to the first straight line is opened on the lock gate. One end of the transmission column away from the transmission disk is inserted into the transmission hole. The password handwheel assembly drives the transmission column to rotate eccentrically and then drives the lock gate to extend along the first straight line direction.

5. The indirect locking combination lock according to claim 1, characterized in that: It also includes an assembly bracket, which is detachably connected to the external support body, and the lock body is detachably connected to the assembly bracket.

6. The indirect locking combination lock according to claim 5, characterized in that: It also includes an indirect fixing sleeve, which is detachably mounted on the lock body, and is detachably connected to the assembly bracket. Both sides of the indirect fixing sleeve are configured with hollow portions, one end of the indirect fixing sleeve is open, and the other end is provided with a through hole. When the indirect fixing sleeve is mounted on the lock body, the through hole is opposite to the insertion hole.

7. The indirect locking combination lock according to claim 6, characterized in that: The cam is provided with a first spring which is arranged on the inner wall of one side of the slide groove, and a first spring is arranged on the inner wall of the first spring cavity, and a clamping piece is arranged in the slide groove, and one end of the clamping piece is fixedly connected to one end of a pressure rod, and the other end of the pressure rod extends to a side of the assembling bracket, and the pressure rod and the assembling bracket are slidably connected, and a slider is arranged on the outside of the indirect fixing sleeve, and the slider can slide into the slide groove from one end of the slide groove, and a clamping slot is arranged on a side of the slider facing the clamping piece, and the slider is located in the slide groove and the pressure rod is not subjected to external force. When the slider is located in the slide groove and the pressure rod is not subjected to external force, the clamping piece extends into the clamping slot under the elastic force of the first spring to limit the movement of the slider in the slide groove, and when the pressure rod is subjected to pressure toward the clamping piece, the clamping piece can overcome the elastic force of the first spring and move out of the clamping slot to release the restriction on the freedom of movement of the slider.

8. The indirect locking combination lock according to claim 3, characterized in that: The portion of the password handwheel assembly located outside the open end of the housing assembly is provided with anti-slip grooves.

9. The indirect locking combination lock according to claim 3, characterized in that: The large end contour and the small end contour of the special-shaped hole are both arc-shaped, and two ends of the large end contour are connected with two ends of the small end contour.

10. A method for using the indirect locking combination lock according to any one of claims 1 to 9, characterized in that: It includes: wrapping the lock rope around the object to be locked; Pass the plug from one side of the ring to the other side; inserting a plug into the lock body; The lock body is used to lock the plug in the socket.

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