Prying-resistant door lock

Abstract

The utility model discloses an anti-prying type door lock, which relates to the field of door locks and comprises a fixed lock, a rotating lock cylinder is mounted in the fixed lock, a sliding meshing mechanism for fixing a sliding embedding rod is mounted on the outer surface of the rotating lock cylinder, the sliding meshing mechanism comprises a first meshing gear, and a second meshing gear is mounted on the outer surface of the rotating lock cylinder. And the first meshing gear is fixedly installed on the outer surface of the rotating lock cylinder, and a second meshing gear is installed on the inner surface of the fixed lock. According to the prying-resistant door lock, when the lock cylinder needs to be fixed and limited, a key is directly inserted into the rotary lock cylinder, the lock is rotated to be locked, the sliding embedding rod is kept to slide to the limit position of the upper end during operation, and the sliding embedding rod is directly slid downwards after the lock is fixed; by means of the design, the external resistance of the lock cylinder to violent prying is improved, and the protection function of the prying-resistant design is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to door lock technical field, concretely is a kind of anti-pick door lock. BACKGROUND

[0002] Door lock is a kind of common safety equipment, for protecting personal property and privacy, according to the principle of lock cylinder, burglary-resistant lock can be divided into pin tumbler lock, leaf lock, magnetic lock, IC card lock, fingerprint lock etc., generally speaking, the security of door lock is closely related with its structural design, material quality and manufacturing process, including drilling, sawing, prying, pulling, impact resistance, to improve its ability to resist external damage.

[0003] Intelligent door lock may exist the risk of being copied, especially fingerprint lock, because fingerprint collection technology is more popular, and living body fingerprint unlocking technology has not been widely used, in addition, the electronic information encryption and decryption level of intelligent door lock may exist problem, there is the risk of hacker attack Intelligent door lock may exist the problem of low emergency lock cylinder anti-theft performance, so that the security of intelligent door lock is virtual, at the same time, the stability of intelligent door lock is poor, may appear lag, failure and other phenomena, bring security risk.

[0004] In order to overcome the above-mentioned defects, the prior art (publication number: CN217400603U, application date: 2022-09-09 of Chinese patent) discloses an anti-pick door lock, which comprises a door lock assembly and a lock stop, the exposed side of the door lock assembly is provided with a door lock protrusion, the exposed side of the lock stop opposite to the exposed side of the door lock assembly is provided with a lock stop protrusion, the door lock protrusion and the lock stop protrusion are staggered, and a labyrinth structure is formed in the gap between the door lock assembly and the lock stop. The utility model staggered sets protrusions on the corresponding two planes of the door lock assembly and the lock stop, and forms a labyrinth structure as a whole, the door lock does not need to set an insurance lock structure, and has high anti-pick safety; the structure is compact, the operation is simple, the locking is reliable, the cost is controllable, the application range is wide, the problem of low anti-pick safety of the existing driver's room door lock is solved, and the safety gap between the door lock and the lock stop is ensured, so that the normal opening and closing function of the door is not affected.

[0005] Although the above design can solve the above problems, the lock will be removed under the violent prying of external force on the lock cylinder, the anti-pick design protection function is weak, the locking design is not fast enough, and the indoor locking operation is too complex, so that the cost is increased, the maintenance is not easy, the security is reduced, and the anti-pick function is lost. UTILITY MODEL CONTENTS

[0006] The utility model discloses a purpose lies in providing a kind of anti-prying door lock to solve the risk that lockset will appear to be removed under violent prying of lock cylinder by external force in the above background art, the security is reduced and anti-prying function is lost to the problem that the design protection function of anti-prying is weak and the design of locking is not fast enough to use, and the cost is increased not easy to maintain when indoor locking operation is carried out, and the design is too complex.

[0007] To achieve the above object, the utility model provides the following technical scheme: an anti-prying door lock, including fixed lock, the inside of fixed lock is installed with rotating lock cylinder, and the outer surface of rotating lock cylinder is installed with sliding engagement mechanism for fixing sliding embedded rod, the sliding engagement mechanism includes first engagement gear, and first engagement gear is fixedly installed on the outer surface of rotating lock cylinder, the inner surface of fixed lock is installed with second engagement gear, and the front end of second engagement gear and the outer surface of first engagement gear are engaged with each other, the outer surface of second engagement gear is installed with docking rotating rod, and second engagement gear and docking rotating rod are integrally designed, the right side of fixed lock is installed with docking fixing part, and the back of docking fixing part is installed with elastic embedded mechanism for fixing extension semicircular rod.

[0008] Further, the elastic embedded mechanism includes fixed docking frame, and the inner surface of fixed docking frame is installed with limiting sliding rod, the outer surface of limiting sliding rod is installed with retraction sliding semicircular rod, and the side surface of retraction sliding semicircular rod is provided with second sliding inner groove, the retraction sliding semicircular rod slides along the outer surface of limiting sliding rod, and the inner surface of fixed docking frame is installed with abutting sliding frame.

[0009] Further, the retraction sliding semicircular rod is slidably installed in the inside of abutting sliding frame, and the outer surface of retraction sliding semicircular rod is installed with extrusion retraction spring, the tail end of extrusion retraction spring abuts the outer surface of abutting sliding frame, and the extension semicircular rod is fixedly installed on the back of second embedded block, the movement track of extension semicircular rod and the installation position of retraction sliding semicircular rod correspond to each other, and the side surface of docking fixing part is provided with docking inner groove.

[0010] Further, the tail end outer surface of docking rotating rod is provided with embedded inner groove, and the upper surface of fixed lock is installed with sliding fixing frame, and the outer surface of sliding fixing frame is installed with sliding embedded rod, the side surface of sliding embedded rod is provided with first sliding inner groove, and first sliding inner groove slides along the outer surface of sliding fixing frame.

[0011] Further, the sliding track of sliding embedded rod and embedded inner groove inside correspond to each other, and the side surface of fixed lock is installed with first embedded block, the side surface of fixed lock is installed with second embedded block, and the installation position of first embedded block and second embedded block correspond to each other.

[0012] Further, the outer surface of the sliding fixing frame is in contact with the inner surface of the first sliding inner groove to form a sliding structure, the outer surface of the sliding embedded rod is in contact with the inner surface of the embedded inner groove to form a sliding structure, the outer surface of the first meshing gear is in contact with the outer surface of the second meshing gear to form a meshing structure, and the outer surface of the rotating lock core is in contact with the outer surface of the second meshing gear to form a transmission structure.

[0013] Further, the opening position of the butt joint inner groove corresponds to the first embedded block and the second embedded block, and the front end sliding track of the extension semicircular rod enters the inside of the fixed butt joint frame.

[0014] Compared with the prior art, the anti-picking door lock has the advantages that when the lock core needs to be fixed and positioned, the key is directly inserted into the inside of the rotating lock core, the lock is rotated to be locked, the sliding embedded rod is kept sliding to the upper end limit position during operation, the sliding embedded rod is directly slid downward after the lock is fixed, the rotating lock core is fixed through the butt joint rotating rod, the external resistance of the lock core to violent prying is improved, and the anti-picking design protection function is enhanced.

[0015] Further, the first embedded block and the second embedded block correspond to enter the inside of the butt joint inner groove during locking operation, and the extension semicircular rod abuts against the contraction sliding semicircular rod, the contraction sliding semicircular rod is reset by the compression contraction spring after the extension semicircular rod completely penetrates the contraction sliding semicircular rod, the upper end of the extension semicircular rod is completely embedded and fixed, the locking operation in the room is more convenient, and maintenance is easy.

[0016] Further, when the first embedded block and the second embedded block need to be separated, the contraction sliding semicircular rod is pulled out outward along the abutting sliding frame, the contraction sliding semicircular rod penetrates the fixed butt joint frame, and the separation of the extension semicircular rod is completed, and the lock is more convenient to operate. DRAWINGS

[0017] Figure 1 It is a fixed lock three-dimensional structure schematic view of the utility model;

[0018] Figure 2 It is a butt joint fixing piece three-dimensional structure schematic view of the utility model;

[0019] Figure 3 It is a fixed butt joint frame three-dimensional structure schematic view of the utility model;

[0020] Figure 4 It is a first sliding inner groove three-dimensional structure schematic view of the utility model;

[0021] Figure 5The utility model discloses a second meshing gear three-dimensional structure schematic diagram.

[0022] Figure 6 The utility model discloses a contraction sliding half circle rod three-dimensional structure schematic diagram.

[0023] In the figure: 1, fixed lockset, 2, rotating lock core, 3, butt joint fixing piece, 4, first inlay block, 5, second inlay block, 6, extension half circle rod, 7, butt joint inner groove, 8, fixed butt joint frame, 9, sliding fixed frame, 10, sliding inlay rod, 11, first sliding inner groove, 12, first meshing gear, 13, second meshing gear, 14, inlay inner groove, 15, butt joint rotating rod, 16, contraction sliding half circle rod, 17, limit sliding rod, 18, second sliding inner groove, 19, extrusion contraction spring, 20, abutting sliding frame. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the utility model.

[0025] Embodiment one: please refer to Figures 1-6 The utility model provides the following technical scheme: a pry -resistant door lock, including fixed lockset 1, the inside installation of fixed lockset 1 has rotating lock core 2, and the outer surface of rotating lock core 2 installs the sliding engagement mechanism that fixes sliding inlay rod 10, and sliding engagement mechanism includes first meshing gear 12, and first meshing gear 12 fixed mounting is at the outer surface of rotating lock core 2, and the inner surface of fixed lockset 1 is installed with second meshing gear 13, and the front end of second meshing gear 13 and the outer surface of first meshing gear 12 are mutually engaged, and the outer surface of second meshing gear 13 is installed with butt joint rotating rod 15, and second meshing gear 13 and butt joint rotating rod 15 are integrally designed, and the right side of fixed lockset 1 is installed with butt joint fixing piece 3, and the back of butt joint fixing piece 3 is installed with the elastic inlay mechanism that fixes extension half circle rod 6.

[0026] As Figure 2 , Figure 4 , Figure 5The technical scheme is shown, in order to solve the problem that the lock will be removed when it is forced to pry the lock cylinder under external force, and the anti-prying design protection function is weak and the locking design is not fast enough, it is disclosed that: the end surface of the butt joint rotating rod 15 is provided with an embedded inner groove 14, and the upper surface of the fixed lock 1 is provided with a sliding fixed frame 9, and the outer surface of the sliding fixed frame 9 is provided with a sliding embedded rod 10, the side surface of the sliding embedded rod 10 is provided with a first sliding inner groove 11, and the first sliding inner groove 11 slides along the outer surface of the sliding fixed frame 9, the sliding track of the sliding embedded rod 10 corresponds to the inside of the embedded inner groove 14, and the side surface of the fixed lock 1 is provided with a first embedded block 4, and the side surface of the fixed lock 1 is provided with a second embedded block 5, and the installation positions of the first embedded block 4 and the second embedded block 5 correspond to each other, the outer surface of the sliding fixed frame 9 and the inner surface of the first sliding inner groove 11 constitute a sliding structure, and the outer surface of the sliding embedded rod 10 and the inner surface of the embedded inner groove 14 constitute a sliding structure, the outer surface of the first meshing gear 12 and the outer surface of the second meshing gear 13 constitute a meshing structure, and the rotating lock cylinder 2 is in transmission structure with the outer surface of the first meshing gear 12 and the outer surface of the second meshing gear 13.

[0027] When the rotating lock cylinder 2 needs to be rotated and fixed, the sliding embedded rod 10 needs to be kept sliding along the sliding fixed frame 9 to the upper end limit position when rotating forward or rotating each other, the key is inserted into the rotating lock cylinder 2 embedded and installed inside the fixed lock 1 to rotate correspondingly, when the rotating lock cylinder 2 rotates, the first meshing gear 12 fixedly installed on the outer surface of the rotating lock cylinder 2 will be driven to rotate synchronously, and the second meshing gear 13 in contact with the side surface will be driven to rotate synchronously, since the second meshing gear 13 is rotatably installed on the inner surface of the fixed lock 1, the second meshing gear 13 rotates vertically and horizontally under the driving of the meshing motion, and the butt joint rotating rod 15 fixedly installed on the outer surface of the second meshing gear 13 will be continuously rotated synchronously, after completing the rotation to the locking position of the rotating lock cylinder 2, the butt joint rotating rod 15 will be kept perpendicular to the inside of the fixed lock 1, at this time, the sliding embedded rod 10 is directly slid downward along the inside of the sliding fixed frame 9, the first sliding inner groove 11 opened on the side surface of the sliding embedded rod 10 can ensure that the sliding track of the sliding embedded rod 10 remains vertical and stable, after the lower end of the sliding embedded rod 10 passes through the top of the fixed lock 1, since the embedded inner groove 14 opened on the upper surface of the end of the butt joint rotating rod 15 corresponds to the sliding track of the sliding embedded rod 10, the sliding embedded rod 10 will enter the inside of the embedded inner groove 14 to complete the embedding and fixing, so that the rotating lock cylinder 2 will not rotate and remain fixed.

[0028] As Figure 1 , Figure 3 ,Figure 6 The technical scheme is shown, in order to solve the problem that the design is too complex when locking in the room, which makes the cost increase, is not easy to maintain, leads to the reduction of safety and loss of anti-picking function, the elastic fitting mechanism includes a fixed butt joint frame 8, and the inner surface of the fixed butt joint frame 8 is provided with a limiting sliding rod 17, the outer surface of the limiting sliding rod 17 is provided with a retractable sliding semicircular rod 16, the side surface of the retractable sliding semicircular rod 16 is provided with a second sliding inner groove 18, the retractable sliding semicircular rod 16 slides along the outer surface of the limiting sliding rod 17, the inner surface of the fixed butt joint frame 8 is provided with a resisting sliding frame 20, the retractable sliding semicircular rod 16 is slidingly installed in the resisting sliding frame 20, the outer surface of the retractable sliding semicircular rod 16 is provided with an extrusion retractable spring 19, the end of the extrusion retractable spring 19 abuts against the outer surface of the resisting sliding frame 20, the extended semicircular rod 6 is fixedly installed at the back of the second fitting block 5, the movement track of the extended semicircular rod 6 corresponds to the installation position of the retractable sliding semicircular rod 16, the side surface of the butt joint fixing part 3 is provided with a butt joint inner groove 7, the opening position of the butt joint inner groove 7 corresponds to the first fitting block 4 and the second fitting block 5, and the front end of the extended semicircular rod 6 slides into the fixed butt joint frame 8.

[0029] When the fixing operation of the first embedded block 4 and the second embedded block 5 is needed, the door is directly closed and then the rotating lock core 2 is rotated by using the key, the first embedded block 4 and the second embedded block 5 are triggered to slide outward and enter the inside of the docking fixing piece 3 installed in the corresponding position, the extension of the first embedded block 4 and the second embedded block 5 enters the inside of the docking inner groove 7 corresponding to the side of the docking fixing piece 3, the extension semicircular rod 6 fixedly installed on the back is synchronously driven to slide on the side while the first embedded block 4 and the second embedded block 5 slide backward, the extension semicircular rod 6 enters the inside of the fixed docking frame 8 fixedly installed on the back of the docking fixing piece 3, the contraction sliding semicircular rod 16 slidingly installed in the inside of the abutting sliding frame 20 is abutted when the extension semicircular rod 6 slides, the contraction sliding semicircular rod 16 slides horizontally along the inside surface of the abutting sliding frame 20, the extrusion contraction spring 19 nestedly installed on the outer surface of the contraction sliding semicircular rod 16 is abutted and contracted by the abutting sliding frame 20, and the second sliding inner groove 18 formed on the outer surface of the contraction sliding semicircular rod 16 slides along the outer part of the limiting sliding rod 17 fixedly installed on the inner surface of the fixed docking frame 8 in the corresponding position when the contraction sliding semicircular rod 16 slides backward, so that the sliding of the contraction sliding semicircular rod 16 is stable, and the extrusion contraction spring 19 resets the contraction sliding semicircular rod 16 after the extension semicircular rod 6 passes through the contraction sliding semicircular rod 16, so that the stable embedding of the first embedded block 4 and the second embedded block 5 is ensured.

[0030] In the description of the present application, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "connected" and "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A pick-resistant door lock, comprising a fixed lock (1), a rotating lock cylinder (2) is installed inside the fixed lock (1), and a sliding engagement mechanism for fixing a sliding engagement rod (10) is installed on the outer surface of the rotating lock cylinder (2). characterized in that The sliding engagement mechanism comprises a first engagement gear (12) fixedly installed on the outer surface of the rotating lock cylinder (2), a second engagement gear (13) is installed on the inner surface of the fixed lock (1), the front end of the second engagement gear (13) is engaged with the outer surface of the first engagement gear (12), the outer surface of the second engagement gear (13) is installed with a docking rotating rod (15), and the second engagement gear (13) and the docking rotating rod (15) are designed in one piece, a docking fixing part (3) is installed on the right side of the fixed lock (1), and an elastic engagement mechanism for fixing an extended semicircular rod (6) is installed on the back of the docking fixing part (3).

2. A pick resistant door lock according to claim 1, characterized in that: The elastic engagement mechanism comprises a fixed docking frame (8), a limiting sliding rod (17) is installed on the inner surface of the fixed docking frame (8), a retracted sliding semicircular rod (16) is installed on the outer surface of the limiting sliding rod (17), a second sliding inner groove (18) is formed on the side surface of the retracted sliding semicircular rod (16), the retracted sliding semicircular rod (16) slides along the outer surface of the limiting sliding rod (17), and a resisting sliding frame (20) is installed on the inner surface of the fixed docking frame (8).

3. A pick resistant door lock according to claim 2 wherein: The retracted sliding semicircular rod (16) is slidingly installed in the resisting sliding frame (20), an extrusion retraction spring (19) is installed on the outer surface of the retracted sliding semicircular rod (16), the end of the extrusion retraction spring (19) abuts against the outer surface of the resisting sliding frame (20), the extended semicircular rod (6) is fixedly installed on the back of the second engagement block (5), the movement track of the extended semicircular rod (6) corresponds to the installation position of the retracted sliding semicircular rod (16), and a docking inner groove (7) is formed on the side surface of the docking fixing part (3).

4. A pick resistant door lock according to claim 1 wherein: The end outer surface of the docking rotating rod (15) is provided with an engagement inner groove (14), a sliding fixing frame (9) is installed on the upper surface of the fixed lock (1), a sliding engagement rod (10) is installed on the outer surface of the sliding fixing frame (9), a first sliding inner groove (11) is formed on the side surface of the sliding engagement rod (10), and the first sliding inner groove (11) slides along the outer surface of the sliding fixing frame (9).

5. A pick resistant door lock according to claim 4 wherein: The sliding track of the sliding engagement rod (10) corresponds to the inside of the engagement inner groove (14), a first engagement block (4) is installed on the side surface of the fixed lock (1), a second engagement block (5) is installed on the side surface of the fixed lock (1), and the installation positions of the first engagement block (4) and the second engagement block (5) correspond to each other.

6. A pick resistant door lock according to claim 5 wherein: The outer surface of the sliding fixed frame (9) is in contact with the inner surface of the first sliding inner groove (11) to form a sliding structure, and the outer surface of the sliding embedded rod (10) is in contact with the inner surface of the embedded inner groove (14) to form a sliding structure, the outer surface of the first meshing gear (12) is in contact with the outer surface of the second meshing gear (13) to form a meshing structure, and the rotating lock core (2) is in contact with the outer surface of the second meshing gear (13) through the outer surface of the first meshing gear (12) to form a transmission structure.

7. A pick resistant door lock according to claim 3 wherein: The opening position of the butt joint inner groove (7) corresponds to the first embedded block (4) and the second embedded block (5), and the front end sliding track of the extended semicircular rod (6) enters the inside of the fixed butt joint frame (8).

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