Lock breaking tool

Abstract

The utility model provides a lock breaking tool which comprises a lock pulling device, the lock pulling device is used for pulling out a lock cylinder of a fault lock, and the lock pulling device comprises a bolt, a supporting base, a lock pulling shaft and a nut. The bolt is connected with the lock cylinder. The lock pulling shaft is provided with a first end close to the fault lock and a second end away from the fault lock, the first end is provided with a first limiting groove, the first limiting groove extends to the peripheral face of the first end, the head of the bolt is contained in the first limiting groove, and the first limiting groove limits the bolt to be disengaged from the first limiting groove in the axial direction of the lock pulling shaft. Threads are arranged on the peripheral face of the second end. In the axial direction of the lock pulling shaft, the supporting base is movably arranged at the first end of the lock pulling shaft in a sleeving mode and limits circumferential rotation of the lock pulling shaft. The nut sleeves the second end, is in threaded connection with the second end and is used for controlling the lock pulling shaft to axially move relative to the supporting seat. The lock pulling device can pull out the lock cylinder, unlocking is achieved, the risk of damaging fixed property is reduced, cost is saved, convenience of unlocking is improved, and unlocking difficulty is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of unlocking tools, in particular to a lock breaking tool. BACKGROUND

[0002] The box lock is a commonly used lock product and plays an important role in people's life. It can be used to lock the door of a warehouse, factory or home.

[0003] However, when the box lock fails, it will affect the normal life or work of the user. Especially in some special environments such as transformer stations and power stations, the environment of such places is usually harsh, which can easily lead to a shorter life of the box lock.

[0004] If the lock cylinder of the box lock fails and needs to be urgently opened, and the lock manufacturer or the locksmith cannot be contacted in time to open the lock, in order to ensure the normal work or life, the nearest window breaking or door breaking method is usually used to handle it. This method of handling damages fixed property and has a high cost.

[0005] Therefore, when the lock cylinder of the box lock fails, how to open the lock without damaging the fixed property and saving the cost is a technical problem that needs to be solved. CONTENT OF THE INVENTION

[0006] The present application provides a lock breaking tool which can pull out the lock cylinder of a failed lock and realize unlocking, improve the convenience of life or work, reduce the risk of damaging fixed property and save cost.

[0007] The present application is achieved by the following technical scheme:

[0008] The present application provides a lock breaking tool, which includes a lock pulling device for pulling out the lock cylinder of a failed lock. The lock pulling device includes a bolt, a support seat, a pulling shaft and a nut. The bolt is used to connect the lock cylinder. In the axial direction of the pulling shaft, the pulling shaft has a first end close to the failed lock and a second end away from the failed lock. The first end is provided with a first limiting groove extending to the outer circumferential surface of the first end. The head of the bolt is accommodated in the first limiting groove. The first limiting groove limits the bolt from being separated from the first limiting groove in the axial direction of the pulling shaft. The outer circumferential surface of the second end is provided with a thread. In the axial direction of the pulling shaft, the support seat is movably sleeved on the first end of the pulling shaft and limits the circumferential rotation of the pulling shaft. The nut is sleeved on the second end and is threadedly connected with the second end. The nut is used to control the axial movement of the pulling shaft relative to the support seat.

[0009] The technical scheme of the embodiment of the application comprises the following steps: the first limiting groove of the lock pulling shaft accommodates the bolt connected with the lock cylinder, and the bolt is limited from being separated from the first limiting groove along the axial direction of the lock pulling shaft. Meanwhile, the nut is sleeved on the lock pulling shaft and is in threaded connection with the lock pulling shaft, and the supporting seat limits the circumferential rotation of the lock pulling shaft, so that when the nut is screwed, the lock pulling shaft can move away from the faulty lock, and the bolt connected with the lock cylinder can move away from the faulty lock along the axial direction of the lock pulling shaft, so that the lock cylinder is pulled out, the lock is opened, the risk of damaging the fixed property is reduced, the cost is saved, the convenience of opening the lock is improved, and the difficulty of opening the lock is reduced.

[0010] In some embodiments, a protrusion is formed on the inner wall of the first limiting groove, and the protrusion limits the head of the bolt from being separated from the first limiting groove along the axial direction of the lock pulling shaft.

[0011] The technical scheme of the embodiment of the application comprises the following steps: the technical scheme of the embodiment of the application comprises the following steps: the first limiting groove of the lock pulling shaft accommodates the bolt connected with the lock cylinder, and the bolt is limited from being separated from the first limiting groove along the axial direction of the lock pulling shaft. Meanwhile, the nut is sleeved on the lock pulling shaft and is in threaded connection with the lock pulling shaft, and the supporting seat limits the circumferential rotation of the lock pulling shaft, so that when the nut is screwed, the lock pulling shaft can move away from the faulty lock, and the bolt connected with the lock cylinder can move away from the faulty lock along the axial direction of the lock pulling shaft, so that the lock cylinder is pulled out, the lock is opened, the risk of damaging the fixed property is reduced, the cost is saved, the convenience of opening the lock is improved, and the difficulty of opening the lock is reduced.

[0012] In some embodiments, the supporting seat is a cylindrical structure, and the supporting seat is provided with an avoiding groove for avoiding the bolt, and the avoiding groove is arranged opposite to the first limiting groove along the radial direction of the supporting seat.

[0013] The technical scheme of the embodiment of the application comprises the following steps: the first limiting groove of the lock pulling shaft accommodates the bolt connected with the lock cylinder, and the bolt is limited from being separated from the first limiting groove along the axial direction of the lock pulling shaft. Meanwhile, the nut is sleeved on the lock pulling shaft and is in threaded connection with the lock pulling shaft, and the supporting seat limits the circumferential rotation of the lock pulling shaft, so that when the nut is screwed, the lock pulling shaft can move away from the faulty lock, and the bolt connected with the lock cylinder can move away from the faulty lock along the axial direction of the lock pulling shaft, so that the lock cylinder is pulled out, the lock is opened, the risk of damaging the fixed property is reduced, the cost is saved, the convenience of opening the lock is improved, and the difficulty of opening the lock is reduced.

[0014] In some embodiments, the two ends of the supporting seat are respectively provided with a first opening and a second opening along the axial direction of the supporting seat, one end of the supporting seat provided with the first opening is used for contacting the faulty lock, and the second end is passed out of the supporting seat through the second opening. The outer diameter of the nut is greater than the inner diameter of the second opening.

[0015] The technical scheme of the embodiment of the application comprises the following steps: the first limiting groove of the lock pulling shaft accommodates the bolt connected with the lock cylinder, and the bolt is limited from being separated from the first limiting groove along the axial direction of the lock pulling shaft. Meanwhile, the nut is sleeved on the lock pulling shaft and is in threaded connection with the lock pulling shaft, and the supporting seat limits the circumferential rotation of the lock pulling shaft, so that when the nut is screwed, the lock pulling shaft can move away from the faulty lock, and the bolt connected with the lock cylinder can move away from the faulty lock along the axial direction of the lock pulling shaft, so that the lock cylinder is pulled out, the lock is opened, the risk of damaging the fixed property is reduced, the cost is saved, the convenience of opening the lock is improved, and the difficulty of opening the lock is reduced.

[0016] In some embodiments, the supporting seat is provided with a second limiting groove, and the second limiting groove extends along the axial direction of the supporting seat. The lock puller further comprises a limiting rod, the limiting rod is fixedly connected with the lock pulling shaft and is in sliding connection with the second limiting groove, and the second limiting groove limits the circumferential rotation of the lock pulling shaft.

[0017] The technical scheme of the embodiment of the application is characterized in that the limiting rod is fixedly connected with the lock pulling shaft, and the limiting rod is in sliding fit with the second limiting groove, the second limiting groove limits the circumferential rotation of the lock pulling shaft, so that the lock pulling shaft cannot rotate when the nut is screwed, thereby achieving the pulling out of the lock cylinder by the lock pulling shaft.

[0018] In some embodiments, the limiting rod is supported by the support seat and one end of the limiting rod located outside the support seat is provided with a handle.

[0019] The technical scheme of the embodiment of the application is characterized in that the handle is arranged at one end of the limiting rod located outside the support seat, the movement of the limiting rod is realized by the handle, the lock pulling shaft is moved away from the faulty lock, and the convenience of pulling out the lock cylinder is further improved.

[0020] In some embodiments, the lock breaking tool further comprises a first unlocking piece, the first unlocking piece comprises a first handle part and a first body part, the first body part is a long strip body, one end of the first body part is connected with the first handle part, and the other end of the first body part is provided with two grooves, the two grooves are arranged on the two sides of the width direction of the first body part.

[0021] The technical scheme of the embodiment of the application is characterized in that the first body part is inserted into the latch blade slot to realize unlocking, unlocking is realized in the internal of the faulty lock with small operation space, the convenience of unlocking is improved, and the unlocking difficulty is reduced. Meanwhile, the grooves are arranged at the end of the first body part away from the first handle part, the width of the first body part is reduced, the first body part can rotate in the slot of the slot plate, the first body part located away from the first handle part can be in contact with the slot plate, the slot plate is taken out, the use of other unlocking pieces is facilitated, and the convenience of unlocking is improved.

[0022] In some embodiments, the lock breaking tool further comprises a second unlocking piece, the second unlocking piece comprises a second handle part and a second body part, the second body part comprises a first segment and a second segment, one end of the first segment is connected with the second handle part, the other end of the first segment is connected with the second segment, and the first segment and the second segment are arranged at an obtuse angle. The width of the first segment gradually decreases from one end of the first segment connected with the second handle part to the other end of the first segment connected with the second segment.

[0023] The technical scheme of the embodiment of the application is characterized in that the first segment and the second segment are arranged at an obtuse angle, and the width of the first segment gradually decreases from one end of the first segment connected with the second handle part to the other end of the first segment connected with the second segment, the second unlocking piece is inserted into the internal of the faulty lock, the spring on the latch lever can be poked by the second segment, the latch lever is poked to realize unlocking, the convenience of unlocking is improved, and the unlocking difficulty is reduced.

[0024] In some embodiments, the lock breaking tool further comprises a third unlocking piece, the third unlocking piece comprises a third handle part, a third body part and a lug, the third body part comprises a third segment and a fourth segment, one end of the third segment is connected with the third handle part, the other end of the third segment is connected with the fourth segment, the third segment and the fourth segment are arranged at an obtuse angle, and the width of the third segment gradually decreases from the one end of the third segment connected with the third handle part to the other end of the third segment connected with the fourth segment. The lug is arranged on one side of the fourth segment in the width direction.

[0025] The technical scheme of the embodiments of the present application is that the third segment and the fourth segment are arranged at an obtuse angle, and the width of the third segment gradually decreases from the one end of the third segment connected with the third handle part to the other end of the third segment connected with the fourth segment, which facilitates the insertion of the third unlocking piece into the inside of the faulty lock, and the lug is arranged on the fourth segment, so that the lug and the fourth segment can move the spring on the latch lever, thereby moving the latch lever to achieve unlocking, which facilitates the convenience of unlocking and further reduces the difficulty of unlocking.

[0026] In some embodiments, the lock breaking tool further comprises a fourth unlocking piece, the fourth unlocking piece comprises an elongated shaft and a moving piece. One end of the elongated shaft is formed with a fourth handle part, and the other end of the elongated shaft is provided with a first pin hole. The moving piece comprises a fifth segment and a sixth segment, the fifth segment is provided with a plurality of second pin holes spaced apart along the length direction thereof, the plurality of second pin holes are selectively connected with the first pin hole through a pin, the sixth segment is arranged at an obtuse angle with the fifth segment, and the one end of the sixth segment away from the fifth segment is formed with two bifurcated parts, and a clamping opening is formed between the two bifurcated parts.

[0027] The technical scheme of the embodiments of the present application is that the elongated shaft is connected with the moving piece, which increases the depth of the insertion of the moving piece into the inside of the faulty lock, thereby reducing the difficulty of unlocking. Meanwhile, the sixth segment and the fifth segment are arranged at an obtuse angle, and the one end of the sixth segment away from the fifth segment is formed with two bifurcated parts, and a clamping opening is formed between the two bifurcated parts, so that the clamping opening can be clamped with the latch lever, thereby moving the latch lever to achieve unlocking, which facilitates the convenience of unlocking and further reduces the difficulty of unlocking.

[0028] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and other related drawings can also be obtained by those skilled in the art without creative labor on the premise of not deviating from the concept of the present application.

[0030] Figure 1Structure diagram of the lock provided for some embodiments of the present application;

[0031] Figure 2 Structure diagram of the lock puller provided for some embodiments of the present application;

[0032] Figure 3 Structure diagram of the lock puller cooperating with the lock provided for some embodiments of the present application;

[0033] Figure 4 Structure exploded diagram of the lock puller provided for some embodiments of the present application;

[0034] Figure 5 Structure diagram of the first lock opening piece provided for some embodiments of the present application;

[0035] Figure 6 Structure diagram of the first lock opening piece cooperating with the lock provided for some embodiments of the present application;

[0036] Figure 7 Structure diagram of the first lock opening piece cooperating with the lock provided for some embodiments of the present application;

[0037] Figure 8 Structure diagram of the second lock opening piece provided for some embodiments of the present application;

[0038] Figure 9 Structure diagram of the second lock opening piece cooperating with the lock provided for some embodiments of the present application;

[0039] Figure 10 Structure diagram of the third lock opening piece provided for some embodiments of the present application;

[0040] Figure 11 Structure diagram of the third lock opening piece cooperating with the lock provided for some embodiments of the present application;

[0041] Figure 12 Structure diagram of the fourth lock opening piece provided for some embodiments of the present application;

[0042] Figure 13 Structure diagram of the fourth lock opening piece cooperating with the lock provided for some embodiments of the present application.

[0043] Icon: 1 - lock breaking tool; 10 - lock puller; 11 - support seat; 111 - avoiding groove; 112 - first opening; 113 - second opening; 114 - second limiting groove; 12 - lock puller shaft; 121 - first limiting groove; 1211 - protrusion; 122 - first end; 123 - second end; 13 - nut; 14 - limiting rod; 141 - handle; 15 - bolt; 151 - head; 152 - rod; 20 - first unlocking piece; 21 - first handle part; 22 - first body part; 221 - groove; 30 - second unlocking piece; 31 - second handle part; 32 - second body part; 321 - first section; 322 - second section; 40 - third unlocking piece; 41 - third handle part; 42 - third body part; 421 - third section; 422 - fourth section; 43 - lug; 50 - fourth unlocking piece; 51 - extension shaft; 511 - fourth handle part; 512 - first pin hole; 52 - actuator; 521 - fifth section; 5211 - second pin hole; 522 - sixth section; 5221 - bifurcated part; 5222 - bayonet; 100 - lock; 110 - lock shell; 120 - lock core; 130 - mounting cavity; 140 - lock bolt; 150 - latch blade; 160 - slot plate; 161 - slot; 170 - latch rod; 171 - spring; 172 - gap; 180 - latch blade slot; X - axial direction of the lock puller shaft; Y - circumferential direction of the lock puller shaft; Z - radial direction of the lock puller shaft. DETAILED DESCRIPTION

[0044] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some, but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification herein is for describing particular embodiments only and is not intended to be limiting of the application; the use of the terms "including," "comprising," or "having" and variations thereof herein is intended to be broad and encompass the terms "consisting of" and "consisting essentially of" and variations thereof. The terms "first," "second," and the like, as used herein do not have any specific meaning, and are used only to distinguish one element from another.

[0046] Reference to an "embodiment" in this application means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that that the embodiments described in this application can be combined with each other in their various permutations and combinations.

[0047] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "attachment" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0048] The term "and / or" in this application is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this application generally represents that the front and rear associated objects have an "or" relationship.

[0049] "Multiple" appearing in this application means more than two (including two), and similarly, "multiple groups" means more than two groups (including two groups), and "multiple pieces" means more than two pieces (including two pieces).

[0050] To facilitate the understanding of the lock breaking tool provided by the embodiments of the application, the application scenario thereof is first described. The lock breaking tool provided by the embodiments of the application is mainly applied to some special occasions such as transformer substations and power stations. The failure rate of the lock in such occasions is relatively high. The lock breaking tool is used to unlock when the lock fails, thereby reducing the risk of damaging fixed property, saving costs, and facilitating the unlocking convenience and reducing the unlocking difficulty. In addition, the lock breaking tool provided by the embodiments of the application can also be applied to unlocking in daily life. The lock breaking tool will be described below in combination with specific drawings and embodiments.

[0051] The production of the box lock is relatively mature at present, and the structures of the box locks on the market are basically similar, and the unlocking and locking principles are basically the same. The application provides a lock breaking tool for solving the box lock failure problem. In order to better understand the working principle of the lock breaking tool of the application, the structure of the box lock is briefly introduced here.

[0052] Please refer to Figure 1 , Figure 1 The structure diagram of the lock provided by some embodiments of the application is shown. The mounting cavity of the lock is in Figure 1not shown, and shown in subsequent figures, such as Figure 6 , Figure 9 , Figure 11 and Figure 13 In some embodiments, the lock 100 comprises a lock housing 110, a lock cylinder 120, a lock bolt 140, a slot plate 160, a latch blade 150 and a latch bar 170. The lock 100 can be arranged on a door, and the door is provided with a slot for mounting the lock 100. The lock housing 110 is used to accommodate other structures of the lock 100.

[0053] In some embodiments, the lock housing 110 has an installation cavity 130 inside, and the lock cylinder 120 is arranged in the installation cavity 130. The lock cylinder 120 can be the part of the lock 100 used for inserting the key during normal use, that is, the lock cylinder 120 is provided with a key hole.

[0054] In some embodiments, the lock cylinder 120 is connected with the lock bolt 140, and the lock bolt 140 is inserted into the latch blade slot 180. When the key is inserted into the lock cylinder 120, the key is turned, the lock cylinder 120 drives the lock bolt 140 to rotate in the latch blade slot 180, thereby driving the latch blade 150 to move. The latch blade 150 is connected with the latch bar 170, thereby driving the latch bar 170 to move, thereby realizing unlocking. The outer periphery of the latch bar 170 is sleeved with a spring 171, and when the latch bar 170 moves, the spring 171 is compressed. When the key is reset after being turned, the spring 171 rebounds and resets, thereby driving the latch bar 170 to reset.

[0055] In addition, in order to reduce the risk of shaking of the lock bolt 140 and reduce the entry of impurities from the outside into the latch blade slot 180, the slot plate 160 is arranged between the latch blade slot 180 and the lock cylinder 120. The slot plate 160 is provided with a slot 161, and the shape and size of the slot 161 are matched with the lock bolt 140, so that the lock bolt 140 can pass through the slot 161.

[0056] In order to solve the problem that the lock cylinder 120 fails to unlock, please refer to Figure 1 , and refer to Figures 2 to 4 , Figure 2 is a structure schematic diagram of the lock puller provided by some embodiments of the present application, Figure 3 is a structure schematic diagram of the lock puller cooperating with the lock provided by some embodiments of the present application, Figure 4Figure 1 is a structural exploded view of a lock picking device according to some embodiments of the present application. The present application provides a lock picking tool 1, which comprises a lock picking device 10 for picking a lock cylinder 120 of a malfunctioning lock 100, the lock picking device 10 comprises a support seat 11, a lock picking shaft 12 and a nut 13. A bolt 15 is used to connect the lock cylinder 120. In the axial direction X of the lock picking shaft, the lock picking shaft 12 has a first end 122 close to the malfunctioning lock 100 and a second end 123 away from the malfunctioning lock 100, the first end 122 is provided with a first limiting groove 121 extending to the outer circumferential surface of the first end 122, the head 151 of the bolt 15 is accommodated in the first limiting groove 121, the first limiting groove 121 limits the bolt 15 from being detached from the first limiting groove 121 in the axial direction X of the lock picking shaft, and the outer circumferential surface of the second end 123 is provided with a thread. In the axial direction X of the lock picking shaft, the support seat 11 is movably sleeved on the first end 122 and limits the circumferential rotation of the lock picking shaft 12. The nut 13 is sleeved on the second end 123 and is threadedly connected with the second end 123, and the nut 13 is used to control the axial movement of the lock picking shaft 12 relative to the support seat 11.

[0057] In some embodiments, the axial direction of the lock picking shaft can be represented by the direction indicated by the letter X in the figure.

[0058] In some embodiments, the lock picking shaft 12 can be in a cylindrical shape, and the axial direction X of the lock picking shaft can be the length direction of the lock picking shaft 12.

[0059] In some embodiments, the circumferential direction of the lock picking shaft can be represented by the direction indicated by the letter Y in the figure.

[0060] In some embodiments, the lock picking shaft 12 can be movably arranged on the support seat 11.

[0061] In some embodiments, the support seat 11 can be sleeved on the outside of the lock picking shaft 12, and the lock picking shaft 12 can move in the axial direction X of the lock picking shaft inside the support seat 11.

[0062] In some embodiments, the support seat 11 limits the circumferential rotation of the lock picking shaft 12, that is, the lock picking shaft 12 can only move in the axial direction X of the lock picking shaft and cannot rotate around the axial direction X of the lock picking shaft.

[0063] In some embodiments, when the lock picking device 10 is picking the lock, the first end 122 is the end of the lock picking shaft 12 close to the lock 100, and the second end 123 is the end of the lock picking shaft 12 away from the lock 100.

[0064] In some embodiments, the outer circumferential surface of the lock picking shaft 12 is provided with a thread, and the inside of the nut 13 can be provided with a thread matched therewith, so that the nut 13 is threadedly connected with the lock picking shaft 12, and rotating the nut 13 can cause the nut 13 to move relative to the lock picking shaft 12 in the axial direction X of the lock picking shaft.

[0065] In some embodiments, the first limiting groove 121 is arranged at one end of the lock pulling shaft 12 close to the malfunctioning lock 100, that is, at one end of the lock pulling shaft 12 close to the end face of the malfunctioning lock 100 in the axial direction X of the lock pulling shaft 12, the first limiting groove 121 extends in the axial direction X of the lock pulling shaft 12, and has an opening at the end face of the lock pulling shaft 12 close to the malfunctioning lock 100. The first limiting groove 121 extends to the outer circumferential surface of the lock pulling shaft 12, that is, the outer circumferential surface of the lock pulling shaft 12 has another opening.

[0066] In some embodiments, the bolt 15 can include a head 151 and a shank 152, the outer diameter of the head 151 is larger than the outer diameter of the shank 152. The head 151 and one end of the shank 152 are connected, and the other end of the shank 152 is connected with the lock cylinder 120.

[0067] Wherein, the head 151 and part of the shank 152 can enter the first limiting groove 121 through the opening of the first limiting groove 121 on the outer circumferential surface of the lock pulling shaft 12, and after the shank 152 passes through the opening of the end face of the lock pulling shaft 12 close to the malfunctioning lock 100, the shank 152 is connected with the lock cylinder 120. The first limiting groove 121 limits the movement of the head 151 in the axial direction X of the lock pulling shaft, thereby limiting the bolt 15 from disengaging the first limiting groove 121 in the axial direction X of the lock pulling shaft.

[0068] It should be noted that the lock pulling shaft 12 can be a cylinder, the end face of the lock pulling shaft 12 close to the malfunctioning lock 100 in the axial direction X of the lock pulling shaft 12 can be the bottom surface of the lock pulling shaft 12, and the outer circumferential surface of the lock pulling shaft 12 can be the side circumferential surface of the lock pulling shaft 12.

[0069] When the lock cylinder 120 of the malfunctioning lock 100 is damaged, the unlocking steps of the lock puller 10 can be as follows:

[0070] A small hole with a diameter of 3-5 mm and a depth of 10-15 mm is drilled at the center of the lock cylinder 120, and the small hole can be generated by a hand drill.

[0071] A bolt 15 or a self-tapping screw of other types is screwed into the small hole, and after the bolt 15 is locked in the small hole, the head 151 of the bolt 15 is accommodated in the first limiting groove 121. Wherein, the head 151 of the bolt 15 can be the part extending from the first limiting groove 121 to the outer circumferential surface of the lock pulling shaft 12 into the first limiting groove 121.

[0072] It should be noted that the head 151 of the bolt 15 is the end with a larger outer diameter of the bolt 15.

[0073] After the head 151 of the bolt 15 enters the first limiting groove 121, the first limiting groove 121 limits the bolt 15 in the axial direction X of the lock pulling shaft, so that the bolt 15 cannot disengage the first limiting groove 121 in the axial direction X of the lock pulling shaft.

[0074] At this time, the nut 13 is screwed, and the support seat 11 limits the rotation of the lock pulling shaft 12 in the circumferential direction, the nut 13 rotates relative to the lock pulling shaft 12, the nut 13 can be limited to move along the axial direction X of the lock pulling shaft to approach the bolt 15 by the support seat 11 or other tools, so that the lock pulling shaft 12 moves away from the lock shell 110 along the axial direction X of the lock pulling shaft, so that the lock cylinder 120 is driven by the bolt 15 to move away from the lock shell 110 along the axial direction X of the lock pulling shaft, so that the lock cylinder 120 is pulled out.

[0075] After the lock cylinder 120 is pulled out, the lock tongue 140 can be rotated by a tool or manually, so as to realize unlocking.

[0076] It should be noted that the bolt 15 can also be replaced by a self-tapping screw or other connecting parts.

[0077] The technical scheme of the embodiment of the application, the first limiting groove 121 of the lock pulling shaft 12 accommodates the bolt 15 connected with the lock cylinder 120, and limits the bolt 15 from being separated from the first limiting groove 121 along the axial direction X of the lock pulling shaft. At the same time, the nut 13 is sleeved on the lock pulling shaft 12 and is in threaded connection with the lock pulling shaft 12, the support seat 11 limits the circumferential rotation of the lock pulling shaft 12, so that when the nut 13 is screwed, the lock pulling shaft 12 can move away from the faulty lock 100, so that the bolt 15 connected with the lock cylinder 120 is driven by the lock pulling shaft 12 to move away from the faulty lock 100 along the axial direction X of the lock pulling shaft, so that the lock cylinder 120 is pulled out, the risk of damaging the fixed property is reduced, the cost is saved, and the convenience of unlocking is improved, and the difficulty of unlocking is reduced.

[0078] Please refer to Figures 1 to 4 In some embodiments, a protrusion 1211 is formed on the inner wall of the first limiting groove 121, the protrusion 1211 limits the head 151 of the bolt 15 from being separated from the first limiting groove 121 along the axial direction X of the lock pulling shaft.

[0079] In some embodiments, the inner diameter of the first limiting groove 121 can remain unchanged along the axial direction X of the lock pulling shaft on the outer circumferential surface of the lock pulling shaft 12, so that the head 151 and part of the shaft 152 of the bolt can enter the first limiting groove 121 from the outer circumferential surface of the lock pulling shaft 12.

[0080] In some embodiments, along the axial direction of the lock pulling shaft 12, the first limiting groove 121 can include a first groove section and a second groove section arranged in sequence, and the second groove section is closer to the lock shell 110 than the first groove section.

[0081] The inner diameter of the first slot section can be greater than the inner diameter of the second slot section, so that the head 151 of the bolt 15 is accommodated in the first slot section, and the partial rod portion 152 of the bolt 15 is accommodated in the second slot section. The connection between the first slot section and the second slot section forms a stepped surface, which abuts against the head 151 of the bolt to limit the bolt from being separated from the first limiting slot 121 along the axial direction X of the pulling handle.

[0082] Alternatively, the shape of the first slot section can match the shape of the head 151 of the bolt 15, the shape of the second slot section can match the shape of the rod portion 152 of the bolt 15, and the protrusion 1211 can be an inner wall connecting the first slot section and the second slot section.

[0083] In some embodiments, the first limiting slot 121 can be provided with a protrusion 1211, which is arranged on the inner wall of the first limiting slot 121 and extends towards the axis of the first limiting slot 121, so that the head 151 of the bolt 15 is located on the side of the protrusion 1211 away from the lock shell 110, and the protrusion 1211 abuts against the head 151 of the bolt to limit the bolt from being separated from the first limiting slot 121 along the axial direction X of the pulling handle.

[0084] The technical scheme of the embodiments of the present application forms a protrusion 1211 on the inner wall of the first limiting slot 121 to limit the bolt 15 from being separated from the first limiting slot 121 along the axial direction X of the pulling handle, thereby reducing the risk of the bolt 15 being separated from the pulling handle 12 and improving the reliability of the pulling handle 12 pulling out the lock cylinder 120 through the bolt 15.

[0085] Please refer to Figures 1 to 4 In some embodiments, the support seat 11 is a cylindrical structure, and the support seat 11 is provided with an avoidance slot 111 for avoiding the bolt 15, which is arranged opposite to the first limiting slot 121 along the radial direction of the support seat 11.

[0086] In some embodiments, the support seat 11 can be a cylindrical structure, and the support seat 11 has a hollow interior, and the pulling handle 12 is arranged in the interior of the support seat 11.

[0087] In some embodiments, the axial direction X of the pulling handle can be parallel to the axial direction of the support seat 11, the radial direction Z of the pulling handle can be parallel to the radial direction of the support seat 11, and the circumferential direction Y of the pulling handle can be parallel to the circumferential direction of the support seat 11.

[0088] In some embodiments, the radial direction of the pulling handle can be represented by the direction indicated by the letter Z.

[0089] In some embodiments, the latch bolt 12 can be cylindrical, and the radial direction Z of the latch bolt can be multiple, and the axial direction X of the latch bolt can be the projection direction, and the support base 11 can be projected on a plane perpendicular to the axial direction X of the latch bolt, and the orthographic projection of the support base 11 can be circular, and the radial direction Z of the latch bolt can be the extension direction of any diameter of the circle.

[0090] In some embodiments, the end surface of the support base 11 close to the lock shell 110 can be provided with a first opening 112, and the latch bolt 12 can pass through the first opening 112 to enter the inside of the support base 11. In the axial direction X of the latch bolt, the first opening 112 can be in communication with the first limiting groove 121, so that the bolt 15 can be arranged in the first limiting groove 121 and can extend out of the support base 11 to be connected with the lock cylinder 120.

[0091] In some embodiments, the avoiding groove 111 can be arranged on the outer circumferential surface of the support base 11, and the outer circumferential surface of the support base 11 is the side circumferential surface of the support base 11, which is the same as the extension of the first limiting groove 121 to the outer circumferential surface of the latch bolt 12.

[0092] In some embodiments, the avoiding groove 111 can extend in the axial direction X of the latch bolt, and the avoiding groove 111 can extend to be in communication with the first opening 112.

[0093] In some embodiments, after the bolt 15 is connected with the lock cylinder 120, the bolt 15 can enter the first limiting groove 121 from the avoiding groove 111 in the radial direction Z of the latch bolt. That is, the bolt 15 can pass through the outer circumferential surface of the support base 11 through the avoiding groove 111, and can pass through the outer circumferential surface of the latch bolt 12 through the first limiting groove 121.

[0094] In some embodiments, the size of the avoiding groove 111 can be greater than or equal to the size of the first limiting groove 121, so that the edge of the first limiting groove 121 on the outer circumferential surface of the latch bolt 12 can be observed through the avoiding groove 111 in the radial direction Z of the latch bolt, so as to reduce the risk of interference when the bolt 15 enters the first limiting groove 121.

[0095] The technical scheme of the embodiments of the present application is that the first limiting groove 121 extends to the outer circumferential surface of the latch bolt 12, and the avoiding groove 111 of the support base 11 and the first limiting groove 121 are arranged opposite to each other in the radial direction of the support base 11, so that the bolt 15 can enter the first limiting groove 121 through the avoiding groove 111, which is beneficial to improve the convenience of the cooperation between the latch bolt 12 and the bolt 15.

[0096] Please refer to Figures 1 to 4In some embodiments, the support base 11 is provided with a first opening 112 and a second opening 113 at two ends thereof in the axial direction of the support base 11, the end of the support base 11 provided with the first opening 112 is used to contact the faulty lock 100, and the second end 123 of the support base 11 is passed out of the support base 11 through the second opening 113. The outer diameter of the nut 13 is greater than the inner diameter of the second opening 113.

[0097] In some embodiments, the support base 11 is provided with a first opening 112 and a second opening 113 at two ends thereof in the axial direction X of the pulling shaft, and the first opening 112 is in communication with the first limiting groove 121. When the lock cylinder 120 is pulled out by the lock puller 10, the support base 11 can be used as a force receiving fulcrum, that is, the end of the support base 11 facing the end surface of the lock shell 110 can abut against the lock shell 110, and the lock cylinder 120 is pulled out by the pulling shaft 12.

[0098] In some embodiments, the end of the pulling shaft 12 facing the faulty lock 100 can be arranged in the support base 11, and the other end thereof can be passed out of the support base 11 through the second opening 113, so as to facilitate the operation of the pulling shaft 12 to pull out the lock cylinder 120.

[0099] In some embodiments, the nut 13 can be arranged at the end of the pulling shaft 12 away from the faulty lock 100, that is, the nut 13 is arranged outside the support base 11.

[0100] In some embodiments, the end of the nut 13 facing the faulty lock 100 can abut against the support base 11 in the axial direction X of the pulling shaft. When the nut 13 is screwed, the nut 13 moves along the axial direction X of the pulling shaft to approach the faulty lock 100, at this time, the nut 13 abuts against the support base 11, and the support base 11 abuts against the lock shell 110, so the nut 13 cannot move. At the same time, the pulling shaft 12 is limited by the support base 11 and cannot rotate in the circumferential direction. At this time, the pulling shaft 12 and the nut 13 move relatively, that is, the pulling shaft 12 moves along the axial direction X of the pulling shaft to move away from the lock shell 110, so as to drive the lock cylinder 120 to move away from the lock shell 110, thereby realizing the pulling out of the lock cylinder 120.

[0101] The technical scheme of the embodiments of the present application is that the end of the pulling shaft 12 away from the faulty lock 100 is passed out of the support base 11 through the second opening 113, the nut 13 is arranged at the end of the pulling shaft 12 passed out of the support base 11, and the outer diameter of the nut 13 is greater than the inner diameter of the second opening 113, so that when the nut 13 is screwed, the nut 13 can be limited by the support base 11 when moving toward the faulty lock 100, thereby moving the pulling shaft 12 away from the faulty lock 100 to pull out the lock cylinder 120 of the faulty lock 100, which is beneficial to improve the convenience of pulling out the lock cylinder 120.

[0102] Please refer to Figures 1 to 4In some embodiments, the support base 11 is provided with a second limiting groove 114 extending along the axial direction of the support base 11. The puller 10 further comprises a limiting rod 14 fixedly connected with the puller shaft 12 and in sliding fit with the second limiting groove 114, and the second limiting groove 114 limits the circumferential rotation of the puller shaft 12.

[0103] In some embodiments, the support base 11 can be provided with a second limiting groove 114 arranged on the outer circumferential surface of the support base 11 and in communication with the interior of the support base 11 along the radial direction Z of the puller shaft.

[0104] In some embodiments, the limiting rod 14 is fixedly connected with the puller shaft 12, and the connection can be welding, threaded connection or one-piece forming.

[0105] In some embodiments, the limiting rod 14 extends along the radial direction Z of the puller shaft and passes out of the second limiting groove 114.

[0106] In some embodiments, in the circumferential direction Y of the puller shaft, the surface of the limiting rod 14 can be in contact with the inner wall of the second limiting groove 114 to limit the rotation of the limiting rod 14 along the circumferential direction Y of the puller shaft, thereby limiting the rotation of the puller shaft 12 along the circumferential direction Y of the puller shaft, so that the puller shaft 12 does not rotate when the nut 13 is screwed, thereby realizing the movement of the puller shaft 12 along the axial direction X of the puller shaft.

[0107] In some embodiments, in the circumferential direction Y of the puller shaft, the surface of the limiting rod 14 can have a certain gap 172 with the inner wall of the second limiting groove 114, so that the limiting rod 14 can move along the extension direction of the second limiting groove 114.

[0108] In some embodiments, the second limiting groove 114 can extend along the axial direction X of the puller shaft. On the one hand, when the nut 13 is screwed, the puller shaft 12 moves along the axial direction X of the puller shaft, and the limiting rod 14 can move along the second limiting groove 114, thereby reducing the risk of interference between the limiting rod 14 and the support base 11. On the other hand, when the nut 13 is screwed and the lock cylinder 120 is pulled out a certain distance, the connection between the lock cylinder 120 and the lock shell 110 is loose, and at this time the limiting rod 14 can be moved to move the puller shaft 12 to pull out the lock cylinder 120, thereby improving the efficiency of unlocking.

[0109] The technical scheme of the embodiment of the application, through the fixed connection of the limiting rod 14 and the lock pulling shaft 12, and the sliding fit of the limiting rod 14 and the second limiting groove 114, the second limiting groove 114 limits the circumferential rotation of the lock pulling shaft 12, so that when the nut 13 is screwed, the lock pulling shaft 12 cannot rotate, thereby realizing the pulling out of the lock cylinder 120 by the lock pulling shaft 12. At the same time, after the lock cylinder 120 is pulled out a certain distance by the nut 13, the lock pulling shaft 12 can be moved away from the faulty lock 100 by moving the limiting rod 14, which is beneficial to improve the convenience of pulling out the lock cylinder 120.

[0110] Please refer to Figures 1 to 4 In some embodiments, the limiting rod 14 is worn out of the support seat 11 by the second limiting groove 114, and one end of the limiting rod 14 located outside the support seat 11 is provided with a handle 141.

[0111] In some embodiments, the connection mode of the handle 141 and the limiting rod 14 can be welding, threaded connection or integral molding, etc.

[0112] In some embodiments, the shape of the handle 141 can be spherical, cuboid or other shapes, so as to facilitate manual operation.

[0113] In some embodiments, the unlocking personnel can move the handle 141 to move the limiting rod 14 to pull out the lock cylinder 120.

[0114] The technical scheme of the embodiment of the application, by setting the handle 141 at one end of the limiting rod 14 located outside the support seat 11, the limiting rod 14 can be moved by the handle 141 to move the lock pulling shaft 12 away from the faulty lock 100, which is beneficial to further improve the convenience of pulling out the lock cylinder 120.

[0115] Please refer to Figure 1 And refer to Figures 5 to 7 , Figure 5 The structure diagram of the first unlocking part provided by some embodiments of the application, Figure 6 The schematic diagram of the cooperation of the first unlocking part and the lock provided by some embodiments of the application, Figure 7 The schematic diagram of the cooperation of the first unlocking part and the lock provided by some embodiments of the application. In some embodiments, the lock breaking tool 1 further comprises a first unlocking part 20, the first unlocking part 20 comprises a first handle part 21 and a first body part 22, the first body part 22 is a long strip body, one end of the first body part 22 is connected with the first handle part 21, and the other end of the first body part 22 is provided with two grooves 221, and the two grooves 221 are respectively arranged on both sides of the width direction of the first body part 22.

[0116] The failure of the lock 100 may exist in the case of the lock tongue 140 breaking in addition to the damage of the lock cylinder 120.

[0117] In some embodiments, the first unlocking member 20 can be a long strip-shaped piece. The width of the first handle portion 21 can be greater than the width of the first body portion 22, so as to facilitate the rotation of the first handle portion 21, thereby driving the rotation of the first body portion 22.

[0118] In some embodiments, the first handle portion 21 and the first body portion 22 can be connected by welding, threaded connection or one-piece forming, etc.

[0119] In some embodiments, the width of the first body portion 22 can be approximately equal to the width of the lock tongue 140, so that the first body portion 22 can replace the lock tongue 140 to be inserted into the latch blade slot 180, thereby achieving unlocking.

[0120] In some embodiments, one end of the first body portion 22 can be connected to the first handle portion 21, and the other end of the first body portion 22 can be provided with two grooves 221, so that the width of the part of the first body portion 22 corresponding to the grooves 221 is reduced.

[0121] In some embodiments, the number of grooves 221 can also be one, and one groove 221 is arranged on one side of the width direction of the first body portion 22.

[0122] It should be noted that the position of the groove 221 can be a certain distance from the end surface of the first body portion 22 away from the first handle portion 21.

[0123] In some embodiments, the first body portion 22 can pass through the insertion slot 161 of the insertion slot plate 160, and the position of the groove 221 corresponds to the insertion slot 161. At this time, the first body portion 22 is rotated, so that the part of the first body portion 22 provided with the groove 221 can rotate in the insertion slot 161. After rotation, the part of the first body portion 22 away from the first handle portion 21 can be in contact with the end surface of the insertion slot plate 160 away from the lock shell 110, so as to pull out the insertion slot plate 160, thereby solving the problem of other failures of the lock 100.

[0124] When the lock tongue 140 of the lock 100 is broken, the unlocking method of the lock breaking tool 1 of the present application is as follows:

[0125] The lock cylinder 120 is pulled out by the lock puller 10, and the broken lock tongue 140 is taken out. Then the first body portion 22 of the first unlocking member 20 is inserted into the latch blade slot 180 from the lock shell 110 after passing through the installation cavity 130 accommodating the lock cylinder 120 of the lock shell 110, and the first handle portion 21 is rotated to rotate the first body portion 22, thereby achieving unlocking.

[0126] The technical scheme of the embodiment of the application realizes unlocking by inserting the first main body part 22 into the latch blade slot 180, and the unlocking is realized in the internal part of the fault lock 100 with small operation space, which is beneficial to improve the convenience of unlocking and reduce the difficulty of unlocking. Meanwhile, by arranging the groove 221 at the end of the first main body part 22 away from the first handle part 21, the width of the first main body part 22 is reduced, so that the first main body part 22 can rotate in the insertion slot 161 of the insertion slot plate 160, and the first main body part 22 located away from the first handle part 21 in the groove 221 can be in contact with the insertion slot plate 160, so that the insertion slot plate 160 is taken out, thereby facilitating the use of other unlocking parts and improving the convenience of unlocking.

[0127] Please refer to Figure 1 , and refer to Figure 8 and Figure 9 , Figure 8 The structure schematic diagram of the second unlocking part provided by some embodiments of the application is shown in Figure 9 The schematic diagram of the cooperation between the second unlocking part and the lock provided by some embodiments of the application is shown in. In some embodiments, the lock breaking tool 1 further comprises a second unlocking part 30, the second unlocking part 30 comprises a second handle part 31 and a second main body part 32, the second main body part 32 comprises a first section 321 and a second section 322, one end of the first section 321 is connected with the second handle part 31, the other end of the first section 321 is connected with the second section 322, and the first section 321 and the second section 322 are arranged at an obtuse angle. The width of the first section 321 gradually decreases from the one end of the first section 321 connected with the second handle part 31 to the other end of the first section 321 connected with the second section 322.

[0128] In addition to the damage of the lock cylinder 120 and the breakage of the latch blade 140, the fault of the lock 100 can also include the breakage or displacement of the latch blade 150.

[0129] In some embodiments, the second unlocking part 30 can be a long strip-shaped piece. The width of the second handle part 31 can be greater than the width of the second main body part 32, so as to facilitate the movement of the second handle part 31 and drive the movement of the second main body part 32.

[0130] In some embodiments, the connection mode of the second main body part 32 and the second handle part 31 can be welding, threaded connection or one-piece forming, etc.

[0131] In some embodiments, the second main body part 32 can comprise the first section 321 and the second section 322 connected with each other, and the connection mode of the first section 321 and the second section 322 can be welding, threaded connection or one-piece forming, etc.

[0132] In some embodiments, the first section 321 can be connected with the second handle part 31, and the second section 322 can be used for unlocking.

[0133] Since the installation cavity 130 and the latch bar 170 of the lock 100 can not be located in the same plane, in order to enable the second unlocking member 30 to contact the latch bar 170 after being inserted into the installation cavity 130, the first section 321 and the second section 322 can be arranged at an obtuse angle.

[0134] Since the inner diameter of the installation cavity 130 is large, in some embodiments, in order to make the connection between the second body part 32 and the second handle part 31 more reliable, the width of the first section 321 can be set to be large.

[0135] Since the space between the installation cavity 130 and the latch bar 170 can be narrow, in some embodiments, the width of the first section 321 gradually decreases from the end of the first section 321 connected with the second handle part 31 to the end of the first section 321 connected with the second section 322, so that a part of the first section 321 can enter the space between the installation cavity 130 and the latch bar 170. Meanwhile, the width of the second section 322 can be the same as the width of the connection between the first section 321 and the second section 322, so that the second section 322 can extend into the space where the latch bar 170 is located.

[0136] When the latch tab 150 of the lock 100 is broken or displaced, the unlocking method of the lock breaking tool 1 of the present application is as follows:

[0137] The lock core 120 is pulled out by the lock puller 10, and the broken latch 140 is taken out; then the second body part 32 of the second unlocking member 30 is inserted from the lock shell 110, and after passing through the installation cavity 130 accommodating the lock core 120 of the lock shell 110, the second section 322 extends into the space where the latch bar 170 is located, the elastic body sleeved on the outer peripheral surface of the latch bar 170 has a certain gap 172, the second section 322 is inserted into the gap 172, and the spring 171 is moved to push the latch bar 170 to move, thereby realizing unlocking.

[0138] The technical scheme of the embodiments of the present application is that the first section 321 and the second section 322 are arranged at an obtuse angle, and the width of the first section 321 gradually decreases from the end of the first section 321 connected with the second handle part 31 to the end of the first section 321 connected with the second section 322, which is beneficial to the insertion of the second unlocking member 30 into the inside of the faulty lock 100, and the second section 322 can push the spring 171 on the latch bar 170 to move, thereby pushing the latch bar 170 to move and realizing unlocking, which is beneficial to improving the convenience of unlocking and reducing the difficulty of unlocking.

[0139] Please refer to Figure 1 , and refer to Figure 10 and Figure 11 , Figure 10 the structural schematic diagram of the third unlocking member provided by some embodiments of the present application, Figure 11A schematic diagram of the third unlocking member cooperating with the lockset is provided for some embodiments of the present application. In some embodiments, the lock breaking tool 1 further comprises a third unlocking member 40, which comprises a third handle portion 41, a third body portion 42, and a lug 43. The third body portion 42 comprises a third segment 421 and a fourth segment 422. One end of the third segment 421 is connected to the third handle portion 41, and the other end of the third segment 421 is connected to the fourth segment 422. The third segment 421 and the fourth segment 422 are arranged at an obtuse angle. The width of the third segment 421 gradually decreases from the one end of the third segment 421 connected to the third handle portion 41 to the other end of the third segment 421 connected to the fourth segment 422. The lug 43 is arranged on one side of the fourth segment 422 in the width direction.

[0140] Similarly to the second unlocking member 30, in some embodiments, the third unlocking member 40 can be a long strip-shaped piece. The width of the third handle portion 41 can be greater than the width of the third body portion 42, so as to facilitate moving the third handle portion 41 and thereby moving the third body portion 42.

[0141] In some embodiments, the third body portion 42 and the third handle portion 41 can be connected by welding, threaded connection, or one-piece forming, etc.

[0142] In some embodiments, the third body portion 42 can comprise the third segment 421 and the fourth segment 422 connected to each other. The third segment 421 and the fourth segment 422 can be connected by welding, threaded connection, or one-piece forming, etc.

[0143] In some embodiments, the third segment 421 can be connected to the third handle portion 41, and the fourth segment 422 can be used for unlocking.

[0144] Since the installation cavity 130 and the latch rod 170 of the lockset 100 can not be located in the same plane, in order to enable the third unlocking member 40 to contact the latch rod 170 after being inserted into the installation cavity 130, the third segment 421 and the fourth segment 422 can be arranged at an obtuse angle.

[0145] Since the inner diameter of the installation cavity 130 is relatively large, in some embodiments, in order to make the connection between the third body portion 42 and the third handle portion 41 more reliable, the width of the third segment 421 can be set to be relatively large.

[0146] Since the space between the installation cavity 130 and the latch bar 170 can be narrow, in some embodiments, the width of the third section 421 gradually decreases from the end where the third section 421 is connected with the third handle part 41 to the end where the third section 421 is connected with the fourth section 422, so that a part of the third section 421 can enter the space between the installation cavity 130 and the latch bar 170. Meanwhile, the width of the fourth section 422 can be the same as the width of the end where the third section 421 is connected with the fourth section 422, so that the fourth section 422 can extend into the space where the latch bar 170 is located.

[0147] In some embodiments, the third unlocking member 40 can further include a lug 43 arranged on one side of the width direction of the fourth section 422. The lug 43 can be connected with the fourth section 422 in a manner of welding, threaded connection or one-piece forming, etc.

[0148] When the latch bolt 150 of the lock 100 is broken or displaced, the unlocking method of the lock breaking tool 1 of the present application is as follows:

[0149] The lock cylinder 120 is pulled out by the lock puller 10, and the broken latch bolt 140 is taken out; then the third main body part 42 of the third unlocking member 40 is inserted into the lock shell 110, and after passing through the installation cavity 130 accommodating the lock cylinder 120 of the lock shell 110, the fourth section 422 extends into the space where the latch bar 170 is located, and the elastic body of the fourth section 422 and the lug 43 are both inserted into the gap 172 and push the spring 171 to move, so as to push the latch bar 170 to move, thereby realizing unlocking.

[0150] The technical scheme of the embodiments of the present application is that the third section 421 and the fourth section 422 are arranged at an obtuse angle, and the width of the third section 421 gradually decreases from the end where the third section 421 is connected with the third handle part 41 to the end where the third section 421 is connected with the fourth section 422, which is beneficial to the insertion of the third unlocking member 40 into the inside of the faulty lock 100, and the lug 43 is arranged on the fourth section 422, so that the lug 43 and the fourth section 422 can push the spring 171 on the latch bar 170 to move, thereby pushing the latch bar 170 to move and realizing unlocking, which is beneficial to improving the convenience of unlocking and further reducing the difficulty of unlocking.

[0151] Please refer to Figure 1 , Figures 5 to 7 , and refer to Figure 12 and Figure 13 , Figure 12 the structural schematic diagram of the fourth unlocking member provided by some embodiments of the present application, Figure 13A schematic diagram of the fourth unlocking member cooperating with the lock is provided for some embodiments of the present application. In some embodiments, the lock breaking tool 1 further comprises a fourth unlocking member 50, which comprises an elongated shaft 51 and a poking member 52. The elongated shaft 51 has a fourth handle portion 511 formed at one end thereof, and a first pin hole 512 formed at the other end thereof. The poking member 52 comprises a fifth segment 521 and a sixth segment 522. The fifth segment 521 has a plurality of second pin holes 5211 formed thereon and spaced along the length of the fifth segment 521. The plurality of second pin holes 5211 are selectively connected with the first pin hole 512 by a pin. The sixth segment 522 is arranged at an obtuse angle with respect to the fifth segment 521. The sixth segment 522 has two forked portions 5221 formed at the end thereof away from the fifth segment 521, and a bayonet 5222 formed between the two forked portions 5221.

[0152] In some embodiments, the fourth unlocking member 50 can be a cylinder, and the cross section of the poking member 52 of the fourth unlocking member 50 can be circular.

[0153] In some embodiments, the elongated shaft 51 has the fourth handle portion 511 formed thereon. The elongated shaft 51 can be a cylinder, and the fourth handle portion 511 can be formed by milling a flat surface on the elongated shaft 51 after the elongated shaft 51 is machined, or the fourth handle portion 511 and the elongated shaft 51 can be integrally formed.

[0154] In some embodiments, the elongated shaft 51 has the first pin hole 512 formed at one end thereof, and the fifth segment 521 has the plurality of second pin holes 5211 formed thereon. The first pin hole 512 and the plurality of second pin holes 5211 are matched in size and shape, so that the fifth segment 521 and the elongated shaft 51 are connected by the pin. Meanwhile, according to the different depths of the latch bar 170 from the lock housing 110, one of the plurality of second pin holes 5211 can be selected to be connected with the first pin hole 512 to meet the length requirement.

[0155] In some embodiments, since the installation cavity 130 and the latch bar 170 of the lock 100 can not be located in the same plane, in order to enable the fourth unlocking member 50 to contact the latch bar 170 after being inserted into the installation cavity 130, the fifth segment 521 and the sixth segment 522 can be arranged at an obtuse angle.

[0156] Since the outer diameter of the poking member 52 is large, interference can occur when the poking member 52 is inserted into the insertion slot 161 of the insertion slot plate 160. In some embodiments, the insertion slot plate 160 can be pulled out by the first unlocking member 20, and then the fourth unlocking member 50 can be inserted into the lock housing 110 to thereby poke the latch bar 170 and achieve unlocking.

[0157] When the latch poking piece 150 of the lock 100 is broken or displaced, the unlocking method of the lock breaking tool 1 of the present application is as follows:

[0158] The lock cylinder 120 is pulled out by the lock puller 10, and the broken bolt 140 is taken out.

[0159] The first unlocking piece 20 is inserted into the slot 161 of the slot plate 160, the position of the groove 221 corresponds to the slot 161, the first unlocking piece 20 is rotated, a part of the first main body 22 is located on the side of the slot plate 160 away from the lock shell 110 and contacts with the slot plate 160, the first unlocking piece 20 is moved towards the direction away from the latch rod 170, and the slot plate 160 is pulled out.

[0160] The fourth unlocking piece 50 is inserted into the lock shell 110, passes through the installation cavity 130 of the lock shell 110 accommodating the lock cylinder 120, and the sixth section 522 is inserted into the space where the latch rod 170 is located.

[0161] Taking the example that the latch rod 170 is located above the installation cavity 130 of the lock shell 110, when the two forked parts 5221 are located below the latch rod 170, the forked parts 5221 are moved upwards, and the clamping holes 5222 of the forked parts 5221 clamp the latch rod 170.

[0162] The latch rod 170 is pushed to move, and unlocking is realized.

[0163] The technical scheme of the embodiment of the application connects the lengthened shaft 51 with the poking piece 52, increases the depth of the poking piece 52 inserted into the inside of the faulty lock 100, and reduces the unlocking difficulty. Meanwhile, the sixth section 522 and the fifth section 521 are arranged at an obtuse angle, and the end of the sixth section 522 away from the fifth section 521 is formed with two forked parts 5221, and the clamping holes 5222 are formed between the two forked parts 5221, so that the clamping holes 5222 can be clamped with the poking latch rod 170, thereby the poking latch rod 170 is poked to realize unlocking, which is beneficial to improve the convenience of unlocking and further reduce the unlocking difficulty.

[0164] Although the application has been described with reference to the preferred embodiments, various modifications can be made to the application without departing from the scope of the application. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A lock breaking tool characterized by, The lock puller is used for pulling out the lock cylinder of a malfunctioning lock, and comprises: a bolt for connecting the lock cylinder; a lock pulling shaft having a first end close to the malfunctioning lock and a second end away from the malfunctioning lock in the axial direction of the lock pulling shaft, the first end being provided with a first limiting groove extending to the outer peripheral surface of the first end, the head of the bolt being accommodated in the first limiting groove, the first limiting groove limiting the bolt from being separated from the first limiting groove in the axial direction of the lock pulling shaft, and the outer peripheral surface of the second end being provided with threads; a support seat movably sleeved on the first end of the lock pulling shaft in the axial direction of the lock pulling shaft and limiting the lock pulling shaft from rotating circumferentially; a nut sleeved on the second end and threadedly connected with the second end, the nut being used for controlling the axial movement of the lock pulling shaft relative to the support seat.

2. The lock breaking tool of claim 1, wherein, A protrusion is formed on the inner wall of the first limiting groove, the protrusion limiting the head of the bolt from being separated from the first limiting groove in the axial direction of the lock pulling shaft.

3. The lock breaking tool of claim 1, wherein, The support seat is in a cylindrical structure, the support seat being provided with an avoiding groove for avoiding the bolt, the avoiding groove being oppositely arranged with the first limiting groove in the radial direction of the support seat.

4. The lock breaking tool of claim 1, wherein, In the axial direction of the support seat, the two ends of the support seat are respectively provided with a first opening and a second opening, the end of the support seat provided with the first opening being used for contacting the malfunctioning lock, and the second end being passed out of the support seat through the second opening; The outer diameter of the nut is greater than the inner diameter of the second opening.

5. The lock breaking tool of claim 1, wherein, The support seat is provided with a second limiting groove extending in the axial direction of the support seat; The lock puller further comprises a limiting rod fixedly connected with the lock pulling shaft and slidably matched with the second limiting groove, the second limiting groove limiting the lock pulling shaft from rotating circumferentially.

6. The lock breaking tool of claim 5, wherein, The limiting rod is passed out of the support seat through the second limiting groove, and one end of the limiting rod located outside the support seat is provided with a handle.

7. The lock breaking tool according to any one of claims 1-6, characterized in that, The lock breaking tool further comprises a first unlocking piece, the first unlocking piece comprising a first handle portion and a first body portion, the first body portion being a long strip-shaped piece, one end of the first body portion being connected with the first handle portion, and the other end of the first body portion being provided with two grooves arranged on the two sides in the width direction of the first body portion.

8. The lock breaking tool according to any one of claims 1-6, characterized in that, The lock breaking tool further comprises a second unlocking piece, the second unlocking piece comprising a second handle portion and a second body portion, the second body portion comprising a first segment and a second segment, one end of the first segment being connected with the second handle portion, the other end of the first segment being connected with the second segment, and the first segment and the second segment being arranged at an obtuse angle; The width of the first segment gradually decreases from one end of the first segment connected with the second handle portion to the other end of the first segment connected with the second segment.

9. The lock breaking tool according to any one of claims 1-6, wherein, The lock breaking tool further comprises a third unlocking member, the third unlocking member comprising a third handle portion, a third body portion and a lug, the third body portion comprising a third segment and a fourth segment, one end of the third segment being connected with the third handle portion, the other end of the third segment being connected with the fourth segment, the third segment and the fourth segment being arranged at an obtuse angle; The width of the third segment gradually decreases from one end of the third segment connected with the third handle portion to the other end of the third segment connected with the fourth segment; The lug is arranged on one side of the fourth segment in the width direction.

10. The lock breaking tool according to any one of claims 1-6, wherein, The lock breaking tool further comprises a fourth unlocking member, the fourth unlocking member comprising: An elongated shaft, one end of the elongated shaft being formed with a fourth handle portion, the other end of the elongated shaft being provided with a first pin hole; A poking member, the poking member comprising a fifth segment and a sixth segment, the fifth segment being provided with a plurality of second pin holes distributed along the length direction of the fifth segment, the plurality of second pin holes being selectively connected with the first pin hole through a pin, the sixth segment being arranged at an obtuse angle with the fifth segment, two bifurcated portions being formed on one end of the sixth segment away from the fifth segment, a bayonet being formed between the two bifurcated portions.

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