CN117905344A - Anti-picking bolt lock mechanism for door bolt - Google Patents

Abstract

The invention relates to the field of safes, in particular to a latch mechanism for preventing a door bolt from being prized, which comprises a door plate, a door frame and a box body, wherein the door plate is rotationally connected to the box body; the door plate is rotationally connected with a driving shaft, a connecting disc is fixedly connected with the driving shaft, a second eccentric column is fixedly connected with the connecting disc, a driving unit is formed by the driving shaft, the connecting disc and the second eccentric column together, the mounting frame is connected with the second eccentric column, and the transmission unit comprises a first eccentric column fixedly connected with the connecting disc; the invention provides an anti-prying bolt lock structure of a door bolt, which solves the problems that the side surface of a safe is easy to damage due to impact and the bolt lock structure is opened.

Description

Anti-picking bolt lock mechanism for door bolt

Technical Field

The invention relates to the field of safes, in particular to a latch mechanism for preventing a door bolt from being prized.

Background

Safes are devices used by people to store valuables, and the requirements of people on the anti-theft function of safes are increasing in these years. At present, although people have innovated based on traditional experience, and in recent years, a plurality of anti-theft mechanisms with good functions are also appeared, wherein a bolt lock anti-prying mechanism is also appeared, but due to the defect of the internal structure, the anti-prying mechanism cannot play a role in strict sense, and the function of preventing side impact damage is also not available. Because the traditional bolt lock locks the bolt lock on the door frame (on the box body) only in the door opening direction (front and back direction) but does not lock in the left and right directions, the bolt lock structure is easy to open if impact force is applied to the bolt lock on the side surface of the box body because the anti-theft function is only exerted by the bending strength of the box body.

Disclosure of Invention

In order to solve the problems, the invention provides a latch structure with a door bolt for preventing prying, which solves the problems that the side surface of a safe is easy to break due to impact and the latch structure is opened.

The technical scheme adopted by the invention is as follows: the door plate is rotationally connected to the box body, the door frame is arranged at the opening of the box body, a mounting frame is transversely and slidably connected to the door plate, a bolt block is fixedly connected to the mounting frame, a bolt is rotationally connected to the outer end of the bolt block, an avoidance opening is formed in the door frame, the cross section shape of the bolt is matched with the shape of the avoidance opening, a driving unit for driving the mounting frame to slide is arranged on the door plate, and a transmission unit for driving the bolt to rotate relative to the bolt block is further arranged on the door plate;

The door plate is rotationally connected with a driving shaft, a connecting disc is fixedly connected to the driving shaft, a second eccentric column is fixedly connected to the connecting disc, the driving shaft, the connecting disc and the second eccentric column jointly form a driving unit, the mounting frame is connected with the second eccentric column, and the transmission unit comprises a first eccentric column which is fixedly connected with the connecting disc.

Through the technical scheme, the bolt block and the bolt are matched with the door frame part or the box body part for use, the bolt block and the bolt are connected in a rotating way, after the bolt rotates relative to the bolt block, the bolt part exceeding the outline range of the bolt block is clamped with the door frame part or the box body part, the bolt block and the bolt can be prevented from integrally retracting and sliding under the condition that the bolt does not rotate relative to the bolt block, the impact damage capability of the bolt block and the bolt in the retracting direction is improved, and the anti-theft capability is effectively improved; the pivoted drive shaft drives the connection pad and rotates, and the relative movement of the removal of drive unit and mounting bracket is controlled through the rotation of fixed connection first eccentric column and second eccentric column on the connection pad, and the mounting bracket that removes to the door frame makes the bolt piece to dodge mouthful outside motion, and the drive unit that removes makes the bolt rotate relative the bolt piece, and the user can make the bolt rotate relative the bolt piece through driving the drive shaft rotation for bolt lock mechanism's transmission mode is very swift, and overall structure is more stable.

Further, the bolt block is provided with a shaft hole, the rotary bolt is provided with a rotary shaft, the rotary shaft is rotationally connected with the shaft hole, and the rotary shaft is provided with a side rod extending laterally; the transmission unit further comprises a connecting frame, a first driving hole and a poking plate, wherein the connecting frame is vertically and slidably connected to the mounting frame, the connecting frame is fixedly connected with the poking plate, a limiting opening which is used for the side rod to extend into and be matched with is formed in the poking plate, the first eccentric column extends into the first driving hole, the first driving hole comprises a transverse section and a first circular arc section, and the bottom of the first circular arc section is communicated with the transverse section; when the first eccentric column is positioned in the first circular arc section, the circle center of the first circular arc section is overlapped with the rotation center of the first eccentric column.

Through the technical scheme, when the driving shaft rotates, the first eccentric column is driven to rotate around the driving shaft, the first eccentric column firstly rotates downwards in the first circular arc section, the circle center of the first circular arc section is coincident with the rotation center of the first eccentric column, the position of the connecting frame is kept unchanged, and the section profile of the rotary bolt and the section profile of the bolt block are coincident with each other; after the first eccentric column rotates to the bottom of the first circular arc section, the first eccentric column enters the transverse section to rotate and starts to drive the connecting frame to slide relative to the door plate, and meanwhile, the rotation of the rotary bolt relative to the bolt block is realized by utilizing the cooperation of the limiting opening and the side rod; the rotation of the rotary bolt relative to the bolt block can be realized by driving the driving shaft by a user, and the rotary bolt is very convenient to use.

Further, the mounting bracket includes fixed connection's mounting panel and locating plate, the locating plate with bolt piece fixed connection, fixedly connected with erection column on the door plant, be provided with on the link and supply the erection column stretches into vertical waist shape hole, erection column tip fixedly connected with spacing piece, the link both sides respectively with spacing piece with the mounting panel laminating.

Through the technical scheme, the vertical kidney-shaped holes and the mounting columns are matched, so that the mounting columns can limit the connecting frame, and the connecting frame can be reset in time after sliding relative to the mounting frame; the two sides of the connecting frame are respectively attached to the limiting piece and the mounting plate, so that the mounting column is always positioned in the vertical kidney-shaped hole, and mutual separation caused by movement of the connecting frame is avoided.

Further, a strip-shaped positioning hole for the side rod to extend into is formed in the mounting frame, and the strip-shaped positioning hole is vertically arranged; when the side rod is rotated to abut against one end of the strip-shaped positioning hole, the cross section outline of the rotary bolt and the cross section outline of the bolt block are staggered; and when the side rod is rotated to abut against the other end of the strip-shaped positioning hole, the cross section outline of the rotary bolt and the cross section outline of the bolt block are mutually overlapped.

Through the technical scheme, the angle range of the side rod rotation is limited due to the arrangement of the strip-shaped positioning holes, the angle of the rotary bolt relative to the bolt block can be controlled in a relatively reasonable range, the phenomenon that a user does more idle work is avoided, and the efficiency of controlling the rotary bolt relative to the bolt block to rotate is improved.

Further, a second driving hole into which the second eccentric column extends is formed in the mounting plate, the second driving hole comprises a vertical section and a second arc section, and the bottom of the vertical section is communicated with the second arc section; when the second eccentric column is positioned in the second circular arc section, the center of the circle of the second circular arc section coincides with the movement center of the second eccentric column; and when the second eccentric column moves to the bottom end of the vertical section, the bolt blocks extend outwards to a limit distance.

Through the technical scheme, when the driving shaft rotates, the first eccentric column is driven to rotate around the driving shaft, the second eccentric column firstly rotates downwards in the vertical section on the second driving hole, so that the mounting frame is driven to slide relative to the door plate, and meanwhile, the bolt block is pushed to move towards the outer side of the avoidance opening by utilizing the sliding of the positioning plate; after the second eccentric column rotates to the bottom of the vertical section, the bolt blocks extend outwards to a limit distance, the second eccentric column starts to enter the second circular arc section to rotate, the circle center of the second circular arc section coincides with the movement center of the second eccentric column, and the positions of the mounting frame and the bolt blocks are kept unchanged; the user drives the driving shaft to extend the bolt blocks, so that the use is very convenient.

Further, fixedly connected with reference column on the door plant, be provided with on the mounting bracket and supply the reference column stretches into horizontal kidney-shaped hole, reference column end connection has the spacer, the spacer with the mounting panel laminating.

Through foretell technical scheme, the cooperation of horizontal kidney-shaped hole and reference column is used and is made the reference column can be spacing to the mounting bracket, and the mounting bracket can in time reset after relative door plant slides, avoids breaking away from each other because of the removal of mounting bracket.

Further, be provided with the electromagnetic lock on the door plant, the electromagnetic lock includes the tapered end, when the mounting bracket outwards slides to the limit distance, the tapered end stretches out the butt and locks the mounting bracket.

Through the technical scheme, the mounting frame can be locked after the lock head stretches out, so that the bolt block and the rotary bolt are kept in a stretching state, the rotary bolt and the rotary bolt cannot retract if the electromagnetic lock is not unlocked, and the anti-prying performance is further improved.

Further, the cross section shape of the rotary bolt and the shape of the avoiding opening are square, rectangular, triangular, rhombic, racetrack or elliptic.

Through foretell technical scheme for the profile of bolt is regular in circumference setting, and the part that surpasss bolt piece cross-section profile on the bolt is evenly distributed in circumference, and the atress when making bolt joint is more even.

Further, the positioning plate is fixedly connected with a lock bolt, the number of the lock bolt blocks and the number of the lock bolts on the positioning plate are two, and the lock bolts and the lock bolt blocks are distributed at equal intervals and are vertically arranged on the positioning plate; the two bolt blocks are positioned at the end parts of the positioning plate, and the rotary bolts rotate along with the sliding of the connecting frame; the two lock bolts are positioned in the middle of the positioning plate, and the section outline of the rotary bolt and the section outline of the bolt block are always coincided.

Through foretell technical scheme, bolt piece and lock bolt equidistance distribution and vertical setting make bolt piece and lock bolt atress more even when using on the locating plate, and two bolt pieces of locating plate tip rotate along with the slip of locating plate and make the rotation of the relative bolt piece of user drive locating plate just can realize the bolt of revolveing, and it is very convenient to use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic view of a portion of the present invention in a latch block and latch unlocked state;

FIG. 3 is a second schematic view of a portion of the present invention in a latch block and latch unlocked state;

FIG. 4 is a schematic view of a portion of the present invention in a latched state of the bolt block and the spin lock;

FIG. 5 is a second schematic view of a portion of the present invention in a latched state of the bolt block and the spin lock;

FIG. 6 is a third schematic view of a portion of the present invention in a bolt block and spin lock state;

FIG. 7 is an exploded view of a portion of the structure of the present invention;

FIG. 8 is a schematic view of a door frame structure according to the present invention;

FIG. 9 is a schematic view of a connector structure according to the present invention;

FIG. 10 is a schematic view of a mounting bracket according to the present invention;

the invention label information is as follows:

1. A door panel; 2. a door frame; 3. a case; 4. a mounting frame; 401. a mounting plate; 402. a positioning plate; 5. a bolt block; 6. screwing the bolt; 7. an avoidance port; 8. a drive shaft; 9. a connecting disc; 10. a first eccentric column; 11. a second eccentric column; 12. a shaft hole; 13. a rotating shaft; 14. a side bar; 15. a connecting frame; 16. a first drive hole; 161. a transverse section; 162. a first arc segment; 17. a pulling piece; 18. a limit opening; 19. a mounting column; 20. a vertical kidney-shaped hole; 21. a limiting piece; 22. a strip-shaped positioning hole; 23. a second drive hole; 231. a vertical section; 232. a second arc segment; 24. positioning columns; 25. a transverse kidney-shaped aperture; 26. a positioning sheet; 27. an electromagnetic lock; 271. a lock head; 28. a lock bolt; 29. a knob;

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

Referring to fig. 1-10, a latch mechanism for preventing a door bolt from being prized comprises a door plate 1, a door frame 2 and a box body 3, wherein the door plate 1 is rotationally connected to the box body 3, the door frame 2 is arranged at an opening of the box body 3, a mounting frame 4 is transversely and slidably connected to the door plate 1, a bolt block 5 is fixedly connected to the mounting frame 4, a bolt 6 is rotationally connected to the outer end of the bolt block 5, an avoidance opening 7 is formed in the door frame 2, the cross section shape of the bolt 6 is matched with the shape of the avoidance opening 7, a driving unit for driving the mounting frame 4 to slide is arranged on the door plate 1, and a transmission unit for driving the bolt 6 to rotate relative to the bolt block 5 is also arranged on the door plate 1; the door plate 1 is rotationally connected with a driving shaft 8, a connecting disc 9 is fixedly connected to the driving shaft 8, a second eccentric column 11 is fixedly connected to the connecting disc 9, the driving shaft 8, the connecting disc 9 and the second eccentric column 11 jointly form a driving unit, the mounting frame 4 is connected with the second eccentric column 11, and the driving unit comprises a first eccentric column 10 which is fixedly connected with the connecting disc 9. The bolt block 5 and the bolt 6 are matched with the door frame 2 part or the box body 3 part for use, the bolt block 5 and the bolt 6 are connected in a rotating way, when the bolt 6 rotates relative to the bolt block 5, the part of the bolt 6 beyond the outline range of the bolt block 5 is clamped with the door frame 2 part or the box body 3 part, and the bolt block 5 and the bolt 6 can be prevented from integrally retracting and sliding under the condition that the bolt 6 does not rotate relative to the bolt block 5, so that the impact damage capability of the bolt block 5 and the bolt 6 in the retracting direction is improved, and the anti-theft capability is effectively improved; the pivoted drive shaft 8 drives connection pad 9 and rotates, the relative movement of the removal of drive unit and mounting bracket 4 is controlled through the rotation of the first eccentric post 10 of fixed connection on connection pad 9 and the eccentric post 11 of second, the mounting bracket 4 that removes to door frame 2 makes bolt piece 5 to dodge mouthful 7 outside motion, and the drive unit that removes makes bolt 6 rotate relative to bolt piece 5, the user can make bolt 6 rotate relative to bolt piece 5 through driving drive shaft 8 rotation for bolt lock mechanism's transmission mode is very swift, and overall structure is more stable.

Preferably, the driving shaft 8 is fixedly connected with a knob 29, and the knob 29 and the connecting disc 9 are respectively positioned at two sides of the door plate 1.

It is preferable that the distance between the first eccentric post 10 and the driving shaft 8 is the same as the distance between the second eccentric post 11 and the driving shaft 8.

The number of the escape openings 7 on the door frame 2 is preferably four.

Referring to fig. 2,3, 4, 5,6,7 and 9, the bolt block 5 is provided with a shaft hole 12, the rotary bolt 6 is provided with a rotary shaft 13, the rotary shaft 13 is rotationally connected with the shaft hole 12, and the rotary shaft 13 is provided with a side rod 14 extending laterally; the transmission unit further comprises a connecting frame 15, a first driving hole 16 and a poking plate 17, wherein the connecting frame 15 is vertically and slidably connected to the mounting frame 4, the connecting frame 15 is fixedly connected with the poking plate 17, a limiting opening 18 for the side rod 14 to extend into and be matched with is formed in the poking plate 17, the first eccentric column 10 extends into the first driving hole 16, the first driving hole 16 comprises a transverse section 161 and a first circular arc section 162, and the bottom of the first circular arc section 162 is communicated with the transverse section 161; when the first eccentric column 10 is positioned in the first arc section 162, the center of the first arc section 162 coincides with the rotation center of the first eccentric column 10. When the driving shaft 8 rotates, the first eccentric column 10 is driven to rotate around the driving shaft 8, the first eccentric column 10 firstly rotates downwards in the first circular arc section 162, the circle center of the first circular arc section 162 coincides with the rotation center of the first eccentric column 10, the position of the connecting frame 15 is kept unchanged, and the section profile of the rotary bolt 6 coincides with the section profile of the bolt block 5; after the first eccentric column 10 rotates to the bottom of the first arc section 162, the first eccentric column 10 enters the transverse section 161 to rotate, and starts to drive the connecting frame 15 to slide relative to the door panel 1, and simultaneously, the rotation of the rotary bolt 6 relative to the bolt block 5 is realized by utilizing the cooperation of the limiting port 18 and the side rod 14; the rotation of the rotary bolt 6 relative to the bolt block 5 can be realized by driving the driving shaft 8 by a user, and the use is very convenient.

Preferably, the length direction of the side rod 14 is perpendicular to the axial direction of the rotating shaft 13, so that the efficiency of the side rod 14 for driving the rotating shaft 13 to rotate is improved.

Referring to fig. 2, 3, 4,5, 6, 9 and 10, the mounting frame 4 comprises a mounting plate 401 and a positioning plate 402 which are fixedly connected, the positioning plate 402 is fixedly connected with a bolt block 5, a mounting column 19 is fixedly connected to the door plate 1, a vertical kidney-shaped hole 20 into which the mounting column 19 extends is formed in the connecting frame 15, a limiting plate 21 is fixedly connected to the end part of the mounting column 19, and two sides of the connecting frame 15 are respectively attached to the limiting plate 21 and the mounting plate 401. The vertical kidney-shaped holes 20 and the mounting columns 19 are matched, so that the mounting columns 19 can limit the connecting frame 15, and the connecting frame 15 can be reset in time after sliding relative to the mounting frame 4; the two sides of the connecting frame 15 are respectively attached to the limiting piece 21 and the mounting plate 401, so that the mounting column 19 is always positioned in the vertical kidney-shaped hole 20, and mutual detachment caused by movement of the connecting frame 15 is avoided.

Referring to fig. 2,3, 5,6 and 10, the mounting frame 4 is provided with a strip-shaped positioning hole 22 for the side rod 14 to extend into, and the strip-shaped positioning hole 22 is vertically arranged; when the side rod 14 is rotated to abut against one end of the strip-shaped positioning hole 22, the cross-sectional profile of the rotary bolt 6 and the cross-sectional profile of the bolt block 5 are staggered; when the side lever 14 is rotated to abut against the other end of the bar-shaped positioning hole 22, the cross-sectional profile of the rotation bolt 6 and the cross-sectional profile of the bolt block 5 overlap each other. The setting of bar locating hole 22 makes the angle scope that side lever 14 rotated restricted, and the rotatable movable angle control of spin 6 relative to bolt piece 5 is in relatively reasonable within range, avoids the user to do idle work more, has promoted the pivoted efficiency of control spin 6 relative to bolt piece 5.

Preferably, the number of the rotary bolts 6, the side rods 14, the rotary shafts 13 and the strip-shaped positioning holes 22 is two, and all the side rods 14 are arranged in the strip-shaped positioning holes 22 in a penetrating mode.

Preferably, when the side rod 14 is abutted against the bottom end of the strip-shaped positioning hole 22, the cross-sectional profile of the rotary bolt 6 and the cross-sectional profile of the bolt block 5 are staggered; preferably, when the side lever 14 abuts against the tip of the bar-shaped positioning hole 22, the cross-sectional profile of the rotation plug 6 and the cross-sectional profile of the plug 5 overlap each other.

The mutually staggered description of the cross-sectional profile of Wen Zhongxuan bolt 6 and the cross-sectional profile of bolt block 5 means in particular that the cross-sectional profile of bolt 6 partially coincides with the cross-sectional profile of bolt block 5 and that the cross-sectional profile of bolt 6 has a portion that is outside the cross-sectional profile of bolt block 5.

Referring to fig. 2,3,4, 5, 6 and 10, a second driving hole 23 into which the second eccentric column 11 extends is formed in the mounting plate 401, the second driving hole 23 includes a vertical section 231 and a second arc section 232, and the bottom of the vertical section 231 is communicated with the second arc section 232; when the second eccentric column 11 is positioned in the second circular arc section 232, the center of the second circular arc section 232 coincides with the movement center of the second eccentric column 11; when the second eccentric column 11 moves to the bottom end of the vertical section 231, the bolt block 5 protrudes outward to a limited distance. When the driving shaft 8 rotates, the first eccentric column 10 is driven to rotate around the driving shaft 8, the second eccentric column 11 firstly rotates downwards in the vertical section 231 on the second driving hole 23, so that the mounting frame 4 is driven to slide relative to the door panel 1, and meanwhile, the bolt block 5 is pushed to move towards the outer side of the avoiding opening 7 by utilizing the sliding of the positioning plate 402; after the second eccentric column 11 rotates to the bottom of the vertical section 231, the bolt block 5 extends outwards to a limit distance, the second eccentric column 11 starts to enter the second circular arc section 232 to rotate, the circle center of the second circular arc section 232 coincides with the movement center of the second eccentric column 11, and the positions of the mounting frame 4 and the bolt block 5 are kept unchanged; the user drives the driving shaft 8 to extend the bolt block 5, so that the use is very convenient.

Referring to fig. 2, 3, 4, 5, 6 and 10, a positioning column 24 is fixedly connected to the door panel 1, a transverse kidney-shaped hole 25 for the positioning column 24 to extend in is formed in the mounting frame 4, a positioning sheet 26 is connected to the end portion of the positioning column 24, and the positioning sheet 26 is attached to the mounting plate 401. The cooperation of horizontal kidney-shaped hole 25 and reference column 24 is used so that reference column 24 can carry out spacingly to mounting bracket 4, and mounting bracket 4 can in time reset after relative door plant 1 slides, avoids breaking away from each other because of the removal of mounting bracket 4.

Referring to fig. 2 to 6, an electromagnetic lock 27 is provided on the door panel 1, the electromagnetic lock 27 includes a lock 271, and when the mounting frame 4 slides outwards to a limit distance, the lock 271 extends to abut and lock the mounting frame 4. After the lock 271 is extended, the mounting frame 4 can be locked, so that the bolt block 5 and the bolt 6 are kept in an extended state, and retraction of the bolt 6 and the bolt 6 cannot be realized without unlocking the electromagnetic lock 27, thereby further improving the anti-prying performance.

Referring to fig. 2 to 6, the cross-sectional shape of the peg 6 and the shape of the relief opening 7 are square, rectangular, triangular, diamond, racetrack, or oval. The contour of the rotary bolt 6 is regularly arranged in the circumferential direction, and the parts of the rotary bolt 6 exceeding the cross section contour of the bolt block 5 are uniformly distributed in the circumferential direction, so that the stress of the rotary bolt 6 during clamping is more uniform.

Referring to fig. 2 to 6, the positioning plate 402 is fixedly connected with the lock bolts 28, the number of the lock bolts 28 on the positioning plate 402 is two, and the lock bolts 28 and the lock bolts 5 are distributed at equal intervals and vertically arranged on the positioning plate 402; two bolt blocks 5 are positioned at the end parts of the positioning plate 402, and the rotary bolts 6 rotate along with the sliding of the connecting frame 15; the two bolts 28 are positioned in the middle of the positioning plate 402, and the cross-sectional profile of the rotary bolt 6 and the cross-sectional profile of the bolt block 5 always coincide. The bolt blocks 5 and the lock bolts 28 are distributed on the positioning plate 402 at equal intervals and vertically arranged, so that the bolt blocks 5 and the lock bolts 28 are stressed more uniformly when in use, and the two bolt blocks 5 at the end part of the positioning plate 402 rotate along with the sliding of the positioning plate 402, so that a user drives the positioning plate 402 to rotate the rotary bolts 6 relative to the bolt blocks 5, and the rotary bolt is quite convenient to use.

The cross-sectional profile shape of the lock bolt 28, the bolt block 5 and the bolt 6 and the shape of the relief opening 7 are preferably square.

Referring to fig. 1 to 10, after the door panel 1 is closed on the opening of the box 3, the knob 29 is rotated to drive the driving shaft 8 to rotate, the second eccentric column 11 drives the mounting frame 4 to slide outwards while the second eccentric column 11 is downward relative to the vertical section 231 of the second driving hole 23, the first eccentric column 10 rotates downward in the first arc section 162 of the first driving hole 16, at this time, the position of the connecting frame 15 remains unchanged, the rotary bolt 6 does not rotate relative to the bolt block 5, and the rotary bolt 6 and the bolt block 5 sequentially extend out of the avoiding opening 7.

When the second eccentric column 11 moves into the second arc section 232, the rotary bolt 6 and the bolt block 5 completely extend out of the avoiding opening 7, the knob 29 is continuously rotated, the second eccentric column 11 rotates in the second arc section 232, and the integral position of the mounting frame 4 is kept unchanged; when the first eccentric column 10 rotates into the transverse section 161, the first eccentric column 10 drives the connecting frame 15 to slide leftwards while the transverse section 161 of the first driving hole 16 is downward relative to the first eccentric column 10, at the moment, the connecting frame 15 slides leftwards while the connecting frame 15 integrally slides downwards relative to the mounting frame 4, the shifting sheet 17 moves along with the movement of the connecting frame 15, the side rod 14 is driven to rotate downwards, the rotary bolt 6 rotates relative to the bolt block 5, and when the side rod 14 abuts against the bottom end of the strip-shaped positioning hole 22, the outline shapes of the bolt block 5 and the rotary bolt 6 are staggered.

The invention can control the rotation of the driving shaft 8 by combining the mechanical lock or the electronic lock, so that when the mechanical lock or the electronic lock connected with the driving shaft 8 is in a locking state, the part of the rotary bolt 6 exceeding the outline range of the bolt block 5 is clamped with the part of the box body 3 or the part of the door frame 2, and the safety of the safe is greatly improved.

When the installation frame 4 and the mechanical lock or the electronic lock are designed together and the side rod 14 is abutted against the bottom end of the strip-shaped positioning hole 22, the driving shaft 8 can be twisted to unlock the transverse displacement of the installation frame 4 only after unlocking the mechanical lock or the electronic lock.

The locking head 271 extends to abut against the mounting frame 4 to lock the mounting frame 4 which moves to the limit outwards, the retraction and extension of the locking head 271 are controlled by the coded lock, the electromagnetic lock 27 can be unlocked only by inputting a correct code, so that the bolt block 5 and the rotary bolt 6 are unlocked, and the use safety is further improved.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims (9)

1. The utility model provides a latch mechanism of keeper pick-proof, includes door plant (1), door frame (2) and box (3), its characterized in that: the door plate (1) is rotationally connected to the box body (3), the door frame (2) is arranged at the opening of the box body (3), a mounting frame (4) is transversely and slidably connected to the door plate (1), a bolt block (5) is fixedly connected to the mounting frame (4), a rotary bolt (6) is rotationally connected to the outer end of the bolt block (5), an avoidance opening (7) is formed in the door frame (2), the cross section shape of the rotary bolt (6) is matched with the shape of the avoidance opening (7), a driving unit for driving the mounting frame (4) to slide is arranged on the door plate (1), and a transmission unit for driving the rotary bolt (6) to rotate relative to the bolt block (5) is further arranged on the door plate (1);

The novel door plate is characterized in that a driving shaft (8) is connected to the door plate (1) in a rotating mode, a connecting disc (9) is fixedly connected to the driving shaft (8), a second eccentric column (11) is fixedly connected to the connecting disc (9), the driving shaft (8), the connecting disc (9) and the second eccentric column (11) jointly form a driving unit, the mounting frame (4) is connected with the second eccentric column (11), and the transmission unit comprises a first eccentric column (10), and the first eccentric column (10) is fixedly connected with the connecting disc (9).

2. The anti-pry latch mechanism in accordance with claim 1 wherein: the bolt block (5) is provided with a shaft hole (12), the rotary bolt (6) is provided with a rotary shaft (13), the rotary shaft (13) is rotationally connected with the shaft hole (12), and the rotary shaft (13) is provided with a side rod (14) extending laterally; the transmission unit further comprises a connecting frame (15), a first driving hole (16) and a poking piece (17), wherein the connecting frame (15) is vertically and slidably connected to the mounting frame (4), the connecting frame (15) is fixedly connected with the poking piece (17), a limiting opening (18) for the side rod (14) to extend into and be matched with is formed in the poking piece (17), the first eccentric column (10) extends into the first driving hole (16), the first driving hole (16) comprises a transverse section (161) and a first circular arc section (162), and the bottom of the first circular arc section (162) is communicated with the transverse section (161); when the first eccentric column (10) is positioned in the first arc section (162), the circle center of the first arc section (162) is coincident with the rotation center of the first eccentric column (10).

3. The anti-pry latch mechanism in accordance with claim 2 wherein: the mounting frame (4) comprises a mounting plate (401) and a positioning plate (402) which are fixedly connected, the positioning plate (402) is fixedly connected with a bolt block (5), a mounting column (19) is fixedly connected to the door plate (1), a vertical kidney-shaped hole (20) which is used for the mounting column (19) to extend in is formed in the connecting frame (15), a limiting plate (21) is fixedly connected to the end part of the mounting column (19), and two sides of the connecting frame (15) are respectively attached to the limiting plate (21) and the mounting plate (401).

4. A tamper-resistant latch mechanism for a keeper as defined in claim 3 wherein: the mounting frame (4) is provided with a strip-shaped positioning hole (22) for the side rod (14) to extend in, and the strip-shaped positioning hole (22) is vertically arranged; when the side rod (14) is rotated to abut against one end of the strip-shaped positioning hole (22), the cross-sectional profile of the rotary bolt (6) and the cross-sectional profile of the bolt block (5) are staggered; when the side rod (14) is rotated to be abutted against the other end of the strip-shaped positioning hole (22), the cross-sectional profile of the rotary bolt (6) and the cross-sectional profile of the bolt block (5) are overlapped with each other.

5. A tamper-resistant latch mechanism for a keeper as claimed in claim 1 or 2 or 3 or 4, wherein: a second driving hole (23) into which the second eccentric column (11) extends is formed in the mounting plate (401), the second driving hole (23) comprises a vertical section (231) and a second circular arc section (232), and the bottom of the vertical section (231) is communicated with the second circular arc section (232); when the second eccentric column (11) is positioned in the second circular arc section (232), the circle center of the second circular arc section (232) is coincident with the movement center of the second eccentric column (11); when the second eccentric column (11) moves to the bottom end of the vertical section (231), the bolt block (5) extends outwards to a limit distance.

6. The anti-pry latch mechanism in accordance with claim 5 wherein: the door plate is characterized in that a positioning column (24) is fixedly connected to the door plate (1), a transverse kidney-shaped hole (25) for the positioning column (24) to extend in is formed in the mounting frame (4), a positioning sheet (26) is connected to the end portion of the positioning column (24), and the positioning sheet (26) is attached to the mounting plate (401).

7. A deadbolt lock mechanism according to claim 1 or 2 or 3 or 4 or 6, wherein: the door plate (1) is provided with an electromagnetic lock (27), the electromagnetic lock (27) comprises a lock head (271), and when the mounting frame (4) outwards slides to a limit distance, the lock head (271) stretches out to be abutted and locked with the mounting frame (4).

8. The anti-pry latch mechanism in accordance with claim 7 wherein: the cross section of the rotary bolt (6) is square or rectangular or triangular or rhombic or runway or elliptic, and the shape of the avoidance opening (7) is square or rectangular or triangular or rhombic or runway or elliptic.

9. The anti-pry latch mechanism in accordance with claim 8 wherein: the positioning plate (402) is fixedly connected with a lock plunger (28), the number of the lock plunger (5) and the number of the lock plunger (28) on the positioning plate (402) are two, and the lock plunger (28) and the lock plunger (5) are distributed at equal intervals and are vertically arranged on the positioning plate (402); the two bolt blocks (5) are positioned at the end parts of the positioning plate (402), and the rotary bolts (6) rotate along with the sliding of the connecting frame (15); the two lock bolts (28) are positioned in the middle of the positioning plate (402), and the cross section outline of the rotary bolt (6) and the cross section outline of the bolt block (5) are always coincident.