Bolt-lock mechanism capable of preventing door bolt from being pried

Abstract

The utility model relates to the field of safe boxes, in particular to a bolt lock mechanism with a prying-resistant bolt, which comprises a door plate, a door frame and a box body, the door plate is rotatably connected onto the box body, the door frame is arranged at an opening of the box body, the door plate is transversely and slidably connected with a mounting frame, the mounting frame is fixedly connected with a bolt block, and the outer end of the bolt block is rotatably connected with a rotating bolt. A receding opening is formed in the door frame, a driving unit used for driving the mounting frame to slide is arranged on the door plate, and a transmission unit used for driving the rotating bolt to rotate relative to the bolt block is further arranged on the door plate. A driving shaft is rotationally connected to the door plate, 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 fixedly connected with the connecting disc; the utility model provides a bolt-lock structure with a prying-resistant bolt. The bolt-lock structure solves the problem that the side face of a safe box is prone to being damaged and the bolt-lock structure is easy to open due to impact.

Description

Technical Field

[0001] The utility model relates to the field of safes, in particular to a latch mechanism for preventing door bolts from prying. Background Art

[0002] Safes are devices used by people to store valuables, and in recent years, people have increasingly higher requirements for the anti-theft function of safe-type equipment. Although people have made many innovations based on traditional experience, and in recent years, many anti-theft mechanisms with good functions have appeared, including bolt anti-pry mechanisms, but due to defects in their internal structures, they cannot play a strict anti-pry role, nor do they have the function of preventing damage from side impacts. Because traditional bolt locks only lock the bolt lock on the door frame (box body) in the direction of door opening (front and back direction) and does not lock in the left and right directions, the anti-theft function is only achieved by the bending strength of the box body itself. Therefore, if an impact force is applied to the bolt lock from the side of the box body, it is easier to open the bolt lock structure. Utility Model Content

[0003] In order to solve the above problems, the utility model proposes a latch lock structure for door bolts that is pry-proof, which solves the problem that the latch lock structure is easily damaged and opened by impact on the side of the safe.

[0004] The technical solution adopted by the utility model is: a bolt lock mechanism for preventing door bolts from prying, comprising a door panel, a door frame and a box body, the door panel is rotatably connected to the box body, the door frame is arranged at the opening of the box body, a mounting frame is slidably connected to the door panel in a transverse direction, a bolt block is fixedly connected to the mounting frame, a rotary bolt is rotatably connected to the outer end of the bolt block, a avoidance opening is arranged on the door frame, the cross-sectional shape of the rotary bolt is adapted to the shape of the avoidance opening, a driving unit for driving the mounting frame to slide is arranged on the door panel, and a transmission unit for driving the rotary bolt to rotate relative to the bolt block is also arranged on the door panel;

[0005] The door panel is rotatably connected to a driving shaft, a connecting disk is fixedly connected to the driving shaft, a second eccentric column is fixedly connected to the connecting disk, the driving shaft, the connecting disk and the second eccentric column together constitute the driving unit, the mounting frame is connected to the second eccentric column, the transmission unit includes a first eccentric column, and the first eccentric column is fixedly connected to the connecting disk.

[0006] The bolt block and the rotary bolt are used in conjunction with the door frame part or the box part, and the bolt block and the rotary bolt are rotatably connected to each other. When the rotary bolt rotates relative to the bolt block, the portion of the rotary bolt that exceeds the outline of the bolt block is engaged with the door frame part or the box part. When the rotary bolt does not rotate relative to the bolt block, the bolt block and the rotary bolt can be prevented from retracting and sliding as a whole, thereby increasing the ability of the bolt block and the rotary bolt to withstand impact and damage in the retraction direction, thereby effectively increasing the anti-theft ability. The rotating drive shaft drives the connecting disk to rotate, and the movement of the transmission unit and the relative movement of the mounting frame are controlled by the rotation of the first eccentric column and the second eccentric column fixedly connected to the connecting disk. The mounting frame moving toward the door frame causes the bolt block to move toward the outside of the avoidance opening, and the moving transmission unit causes the rotary bolt to rotate relative to the bolt block. The user can rotate the rotary bolt relative to the bolt block by driving the drive shaft to rotate, so that the transmission method of the bolt lock mechanism is very fast and the overall structure is more stable.

[0007] Furthermore, an axial hole is provided on the bolt block, a rotating shaft is provided on the rotating bolt, the rotating shaft and the axial hole are rotatably connected, and a side rod extending laterally is provided on the rotating shaft; the transmission unit also includes a connecting frame, a first driving hole and a paddle, the connecting frame is vertically slidably connected to the mounting frame, the connecting frame and the paddle are fixedly connected, and a limiting opening for the side rod to extend and adapt is provided on the paddle, the first eccentric column extends into the first driving hole, the first driving hole includes a transverse section and a first circular arc section, and the bottom of the first circular arc section is connected to the transverse section; when the first eccentric column is located in the first circular arc section, the center of the first circular arc section coincides with the rotation center of the first eccentric column.

[0008] Through the above technical scheme, when the driving shaft rotates, it drives the first eccentric column to rotate around the driving shaft. The first eccentric column first rotates downward in the first arc segment, the center of the first arc segment coincides with the rotation center of the first eccentric column, the position of the connecting frame remains unchanged, and the cross-sectional contour of the bolt and the cross-sectional contour of the bolt block coincide with each other; after the first eccentric column rotates to the bottom of the first arc segment, the first eccentric column enters the transverse segment and rotates, and begins to drive the connecting frame to slide relative to the door panel, and at the same time, the rotation of the bolt relative to the bolt block is realized by the cooperation of the limit port and the side rod; the user can realize the rotation of the bolt relative to the bolt block by driving the driving shaft, which is very convenient to use.

[0009] Furthermore, the mounting frame includes a mounting plate and a positioning plate that are fixedly connected, the positioning plate and the bolt block are fixedly connected, the door panel is fixedly connected with a mounting column, the connecting frame is provided with a vertical waist-shaped hole for the mounting column to extend into, the end of the mounting column is fixedly connected with a limiting plate, and the two sides of the connecting frame are respectively fitted with the limiting plate and the mounting plate.

[0010] Through the above technical solution, the coordinated use of the vertical waist-shaped hole and the mounting column enables the mounting column to 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 fitted with the limiting piece and the mounting plate so that the mounting column is always located in the vertical waist-shaped hole, avoiding separation from each other due to the movement of the connecting frame.

[0011] Furthermore, the mounting frame is provided with a strip positioning hole for the side rod to extend into, and the strip positioning hole is vertically arranged; when the side rod is rotated to abut one end of the strip positioning hole, the cross-sectional profile of the bolt and the cross-sectional profile of the bolt block are staggered with each other; when the side rod is rotated to abut the other end of the strip positioning hole, the cross-sectional profile of the bolt and the cross-sectional profile of the bolt block overlap with each other.

[0012] Through the above technical solution, the setting of the strip positioning hole limits the angle range of rotation of the side rod, and the angle of rotation of the bolt relative to the bolt block is controlled within a relatively reasonable range, avoiding the user from doing useless work and improving the efficiency of controlling the rotation of the bolt relative to the bolt block.

[0013] Furthermore, the mounting plate is provided with a second driving hole for the second eccentric column to extend into, the second driving hole includes a vertical section and a second arc section, the bottom of the vertical section is connected to the second arc section; when the second eccentric column is located in the second arc section, the center of the second arc section coincides with the movement center of the second eccentric column; when the second eccentric column moves to the bottom end of the vertical section, the bolt block extends outward to a maximum distance.

[0014] Through the above technical solution, when the driving shaft rotates, it drives the first eccentric column to rotate around the driving shaft, and the second eccentric column first rotates downward in the vertical section on the second driving hole, thereby driving the mounting frame to slide relative to the door panel, and at the same time utilizes the sliding of the positioning plate to push the bolt block to move to the outside of the avoidance opening; after the second eccentric column rotates to the bottom of the vertical section, the bolt block extends outward to the limit distance, and the second eccentric column begins to rotate in the second arc section, the center of the second arc section coincides with the movement center of the second eccentric column, and the positions of the mounting frame and the bolt block remain unchanged; the user can drive the driving shaft to achieve the extension of the bolt block, which is very convenient to use.

[0015] Furthermore, a positioning column is fixedly connected to the door panel, a transverse waist-shaped hole for the positioning column to extend into is provided on the mounting frame, a positioning piece is connected to the end of the positioning column, and the positioning piece is fitted with the mounting plate.

[0016] Through the above technical solution, the cooperation between the transverse waist-shaped hole and the positioning column enables the positioning column to limit the mounting frame, and the mounting frame can be reset in time after sliding relative to the door panel to avoid separation due to movement of the mounting frame.

[0017] Furthermore, an electromagnetic lock is arranged on the door panel, and the electromagnetic lock includes a lock head. When the mounting frame slides outward to a limit distance, the lock head extends out to abut against and lock the mounting frame.

[0018] Through the above technical solution, the mounting frame can be locked after the lock head is extended, so that the bolt block and the rotary bolt remain in the extended state. If the electromagnetic lock is not unlocked, the rotary bolt and the rotary bolt cannot be retracted, further improving the anti-pry performance.

[0019] Furthermore, the cross-sectional shape of the rotary bolt and the shape of the avoidance opening are both square, rectangular, triangular, rhombus, racetrack or elliptical.

[0020] Through the above technical solution, the profile of the bolt is regularly arranged in the circumferential direction, and the portion of the bolt that exceeds the cross-sectional profile of the bolt block is evenly distributed in the circumferential direction, so that the force applied to the bolt during clamping is more uniform.

[0021] Furthermore, a locking bolt is fixedly connected to the positioning plate, and the number of the bolt block and the locking bolt on the positioning plate are both two, and the locking bolt and the bolt block are equidistantly distributed and vertically arranged on the positioning plate; the two bolt blocks are located at the ends of the positioning plate, and the rotary bolt rotates with the sliding of the connecting frame; the two locking bolts are located in the middle of the positioning plate, and the cross-sectional profile of the rotary bolt and the cross-sectional profile of the bolt block always coincide.

[0022] Through the above technical solution, the bolt block and the locking bolt are equidistantly distributed on the positioning plate and are vertically arranged so that the bolt block and the locking bolt are subjected to more uniform force when in use. The two bolt blocks at the ends of the positioning plate rotate as the positioning plate slides, so that the user can drive the positioning plate to realize the rotation of the rotating bolt relative to the bolt block, which is very convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is one of the partial structural schematic diagrams of the utility model when the bolt block and the rotary bolt are unlocked;

[0026] Figure 3 The second schematic diagram of the partial structure of the utility model in the unlocked state of the bolt block and the rotary bolt;

[0027] Figure 4 It is one of the partial structural schematic diagrams of the utility model when the bolt block and the rotary bolt are locked;

[0028] Figure 5 The second schematic diagram of the partial structure of the utility model in the state where the bolt block and the rotary bolt are locked;

[0029] Figure 6 The third schematic diagram of the partial structure of the utility model in the state where the bolt block and the rotary bolt are locked;

[0030] Figure 7 It is an exploded view of part of the structure of the utility model;

[0031] Figure 8 This is a schematic diagram of the door frame structure of the utility model;

[0032] Fig. 9 This is a schematic diagram of the structure of the connecting frame of the utility model;

[0033] Fig.10 This is a schematic diagram of the mounting frame structure of the utility model;

[0034] The utility model number information is as follows:

[0035] 1. Door panel; 2. Door frame; 3. Box; 4. Mounting frame; 401. Mounting plate; 402. Positioning plate; 5. Bolt block; 6. Rotary bolt; 7. Avoidance port; 8. Drive shaft; 9. Connecting plate; 10. First eccentric column; 11. Second eccentric column; 12. Axis hole; 13. Rotating shaft; 14. Side rod; 15. Connecting frame; 16. First drive hole; 161. Horizontal section; 162. First arc section; 17. Paddle; 18. Limiting port; 19. Mounting column; 20. Vertical waist-shaped hole; 21. Limiting plate; 22. Strip positioning hole; 23. Second drive hole; 231. Vertical section; 232. Second arc section; 24. Positioning column; 25. Horizontal waist-shaped hole; 26. Positioning plate; 27. Electromagnetic lock; 271. Lock head; 28. Lock bolt; 29. ​​Knob;

[0036] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0040] See also Figures 1 to 10As shown, a bolt locking mechanism for preventing door bolts from prying comprises a door panel 1, a door frame 2 and a box body 3, the door panel 1 is rotatably 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 slidably connected to the door panel 1, a bolt block 5 is fixedly connected to the mounting frame 4, a rotary bolt 6 is rotatably connected to the outer end of the bolt block 5, an avoidance opening 7 is arranged on the door frame 2, and the cross-sectional shape of the rotary bolt 6 is adapted to the shape of the avoidance opening 7, a driving unit for driving the mounting frame 4 to slide is arranged on the door panel 1, and a transmission unit for driving the rotary bolt 6 to rotate relative to the bolt block 5 is also arranged on the door panel 1; a driving shaft 8 is rotatably connected to the door panel 1, a connecting disk 9 is fixedly connected to the driving shaft 8, a second eccentric column 11 is fixedly connected to the connecting disk 9, the driving shaft 8, the connecting disk 9 are fixedly connected to the second eccentric column 11, the driving shaft 8, the connecting disk 9 and the second eccentric column 11 together constitute a driving unit, the mounting frame 4 is connected to the second eccentric column 11, the transmission unit comprises a first eccentric column 10, and the first eccentric column 10 and the connecting disk 9 are fixedly connected. The bolt block 5 and the rotary bolt 6 are used in conjunction with the door frame 2 part or the box body 3 part. The bolt block 5 and the rotary bolt 6 are rotatably connected to each other. When the rotary bolt 6 rotates relative to the bolt block 5, the part of the rotary bolt 6 that exceeds the outline range of the bolt block 5 is engaged with the door frame 2 part or the box body 3 part. When the rotary bolt 6 does not rotate relative to the bolt block 5, the bolt block 5 and the rotary bolt 6 can be prevented from retracting and sliding as a whole, thereby increasing the bolt block 5 and the rotary bolt 6 The ability to withstand impact damage in the retraction direction is increased, and the anti-theft ability is effectively increased; the rotating drive shaft 8 drives the connecting plate 9 to rotate, and the movement of the transmission unit and the relative movement of the mounting frame 4 are controlled by the rotation of the first eccentric column 10 and the second eccentric column 11 fixedly connected to the connecting plate 9. The mounting frame 4 moving toward the door frame 2 causes the bolt block 5 to move toward the outside of the avoidance opening 7, and the moving transmission unit causes the rotary bolt 6 to rotate relative to the bolt block 5. The user can rotate the rotary bolt 6 relative to the bolt block 5 by driving the driving shaft 8 to rotate, so that the transmission mode of the bolt locking mechanism is very fast and the overall structure is more stable.

[0041] Preferably, a knob 29 is fixedly connected to the driving shaft 8 , and the knob 29 and the connecting plate 9 are respectively located on both sides of the door panel 1 .

[0042] Preferably, the distance between the first eccentric column 10 and the drive shaft 8 is the same as the distance between the second eccentric column 11 and the drive shaft 8 .

[0043] Preferably, the number of avoidance openings 7 on the door frame 2 is four.

[0044] See also Figure 2 , 3As shown in , 4, 5, 6, 7, and 9, an axial hole 12 is provided on the bolt block 5, and a rotating shaft 13 is provided on the bolt 6. The rotating shaft 13 and the axial hole 12 are rotatably connected, and a side rod 14 extending laterally is provided on the rotating shaft 13; the transmission unit also includes a connecting frame 15, a first driving hole 16 and a paddle 17, the connecting frame 15 is vertically slidably connected to the mounting frame 4, the connecting frame 15 and the paddle 17 are fixedly connected, and a limiting opening 18 for the side rod 14 to extend into and adapt to is provided on the paddle 17, the first eccentric column 10 extends into the first driving hole 16, the first driving hole 16 includes a transverse section 161 and a first circular arc section 162, and the bottom of the first circular arc section 162 is connected to the transverse section 161; when the first eccentric column 10 is located in the first circular arc section 162, the center of the first circular arc section 162 coincides with the rotation center of the first eccentric column 10. When the driving shaft 8 rotates, it drives the first eccentric column 10 to rotate around the driving shaft 8. The first eccentric column 10 first rotates downward in the first arc segment 162. The center of the first arc segment 162 coincides with the rotation center of the first eccentric column 10. The position of the connecting frame 15 remains unchanged. The cross-sectional profile of the bolt 6 coincides with the cross-sectional profile of the bolt block 5. After the first eccentric column 10 rotates to the bottom of the first arc segment 162, the first eccentric column 10 enters the transverse segment 161 and rotates, and begins to drive the connecting frame 15 to slide relative to the door panel 1. At the same time, the rotation of the bolt 6 relative to the bolt block 5 is realized by the cooperation of the limit opening 18 and the side rod 14. The user can realize the rotation of the bolt 6 relative to the bolt block 5 by driving the driving shaft 8, which is very convenient to use.

[0045] Preferably, the length direction of the side rod 14 is perpendicular to the axial direction of the rotating shaft 13 , so as to improve the efficiency of the side rod 14 in driving the rotating shaft 13 to rotate.

[0046] See also Figure 2 , 3 As shown in Figures 4, 5, 6, 9 and 10, the mounting frame 4 includes a mounting plate 401 and a positioning plate 402 which are fixedly connected. The positioning plate 402 is fixedly connected to the bolt block 5. The door panel 1 is fixedly connected with a mounting column 19. The connecting frame 15 is provided with a vertical waist-shaped hole 20 for the mounting column 19 to extend into. The end of the mounting column 19 is fixedly connected with a limiting piece 21. The two sides of the connecting frame 15 are respectively fitted with the limiting piece 21 and the mounting plate 401. The coordinated use of the vertical waist-shaped hole 20 and the mounting column 19 enables the mounting column 19 to 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 fitted with the limiting piece 21 and the mounting plate 401 so that the mounting column 19 is always located in the vertical waist-shaped hole 20 to avoid separation from each other due to the movement of the connecting frame 15.

[0047] See also Figure 2 , 3As shown in FIGS. 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 arranged vertically; when the side rod 14 is rotated to abut one end of the strip-shaped positioning hole 22, the cross-sectional profile of the screw bolt 6 and the cross-sectional profile of the bolt block 5 are interlaced; when the side rod 14 is rotated to abut the other end of the strip-shaped positioning hole 22, the cross-sectional profile of the screw bolt 6 and the cross-sectional profile of the bolt block 5 overlap. The provision of the strip-shaped positioning hole 22 limits the rotation angle range of the side rod 14, and the rotation angle of the screw bolt 6 relative to the bolt block 5 is controlled within a relatively reasonable range, avoiding the user from doing more useless work, and improving the efficiency of controlling the rotation of the screw bolt 6 relative to the bolt block 5.

[0048] Preferably, the number of the rotary bolt 6 , the number of the side rod 14 , the number of the rotating shaft 13 and the strip-shaped positioning hole 22 are all two, and all the side rods 14 are inserted into the corresponding strip-shaped positioning holes 22 .

[0049] Preferably, when the side rod 14 abuts the bottom end of the strip positioning hole 22, the cross-sectional profile of the bolt 6 and the cross-sectional profile of the bolt block 5 are interlaced; preferably, when the side rod 14 abuts the top end of the strip positioning hole 22, the cross-sectional profile of the bolt 6 and the cross-sectional profile of the bolt block 5 overlap with each other.

[0050] The description that the cross-sectional profiles of the bolt 6 and the bolt block 5 are interlaced herein specifically means that the cross-sectional profiles of the bolt 6 partially overlap with the cross-sectional profiles of the bolt block 5 and a portion of the cross-sectional profile of the bolt 6 exceeds the cross-sectional profile range of the bolt block 5 .

[0051] See also Figure 2 , 3 As shown in Figures 4, 5, 6 and 10, the mounting plate 401 is provided with a second driving hole 23 for the second eccentric column 11 to extend into, and 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 connected to the second arc section 232; when the second eccentric column 11 is located in the second arc section 232, the center of the second 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 extends outward to a limit distance. When the driving shaft 8 rotates, it drives the first eccentric column 10 to rotate around the driving shaft 8, and the second eccentric column 11 first rotates downward in the vertical section 231 on the second driving hole 23, thereby driving the mounting frame 4 to slide relative to the door panel 1, and at the same time uses the sliding of the positioning plate 402 to push the bolt block 5 to move to the outside of the avoidance opening 7; after the second eccentric column 11 rotates to the bottom of the vertical section 231, the bolt block 5 extends outward to the limit distance, and the second eccentric column 11 begins to enter the second circular arc section 232 to rotate, and the 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 remain unchanged; the user can drive the driving shaft 8 to achieve the extension of the bolt block 5, which is very convenient to use.

[0052] See also Figure 2 , 3 As shown in , 4, 5, 6, and 10, a positioning column 24 is fixedly connected to the door panel 1, and a transverse waist-shaped hole 25 is provided on the mounting frame 4 for the positioning column 24 to extend into. A positioning piece 26 is connected to the end of the positioning column 24, and the positioning piece 26 fits the mounting plate 401. The cooperation of the transverse waist-shaped hole 25 and the positioning column 24 enables the positioning column 24 to limit the mounting frame 4, and the mounting frame 4 can be reset in time after sliding relative to the door panel 1, so as to avoid separation due to the movement of the mounting frame 4.

[0053] See also Figure 2 to Figure 6 As shown, the door panel 1 is provided with an electromagnetic lock 27, which includes a lock head 271. When the mounting frame 4 slides outward to a limit distance, the lock head 271 extends to abut against and lock the mounting frame 4. After the lock head 271 extends, the mounting frame 4 can be locked, so that the bolt block 5 and the rotary bolt 6 remain in an extended state. If the electromagnetic lock 27 is not unlocked, the rotary bolt 6 and the rotary bolt 6 cannot be retracted, which further improves the anti-pry performance.

[0054] See also Figure 2 to Figure 6 As shown, the cross-sectional shape of the bolt 6 and the shape of the escape opening 7 are both square, rectangular, triangular, rhombus, racetrack or elliptical, so that the profile of the bolt 6 is regularly arranged in the circumferential direction, and the portion of the bolt 6 that exceeds the cross-sectional profile of the bolt block 5 is evenly distributed in the circumferential direction, so that the force on the bolt 6 is more uniform when it is engaged.

[0055] See also Figure 2 to Figure 6 As shown, the positioning plate 402 is fixedly connected with a locking bolt 28, and the number of the bolt block 5 and the locking bolt 28 on the positioning plate 402 is two, and the locking bolt 28 and the bolt block 5 are equidistantly distributed and vertically arranged on the positioning plate 402; the two bolt blocks 5 are located at the ends of the positioning plate 402, and the rotary bolt 6 rotates with the sliding of the connecting frame 15; the two locking bolts 28 are located in the middle of the positioning plate 402, and the cross-sectional profile of the rotary bolt 6 always coincides with the cross-sectional profile of the bolt block 5. The bolt block 5 and the locking bolt 28 are equidistantly distributed on the positioning plate 402 and are vertically arranged so that the bolt block 5 and the locking bolt 28 are subjected to more uniform force when in use, and the two bolt blocks 5 at the ends of the positioning plate 402 rotate with the sliding of the positioning plate 402 so that the user can drive the positioning plate 402 to realize the rotation of the rotary bolt 6 relative to the bolt block 5, which is very convenient to use.

[0056] Preferably, the cross-sectional profiles of the locking bolt 28 , the bolt block 5 , the rotary bolt 6 , and the shape of the escape opening 7 are all square.

[0057] See also Figures 1 to 10After the door panel 1 is closed on the opening of the box body 3, the knob 29 is rotated to drive the drive shaft 8 to rotate. The second eccentric column 11 moves downward relative to the vertical section 231 of the second drive hole 23. At the same time, the second eccentric column 11 drives the mounting frame 4 to slide outward, and the first eccentric column 10 rotates downward in the first arc section 162 of the first drive hole 16. At this time, the position of the connecting frame 15 remains unchanged, the bolt 6 does not rotate relative to the bolt block 5, and the bolt 6 and the bolt block 5 extend out of the avoidance opening 7 in turn.

[0058] When the second eccentric column 11 moves into the second arc segment 232, the bolt 6 and the bolt block 5 are completely extended out of the avoidance opening 7, and the knob 29 continues to be rotated, and the second eccentric column 11 rotates in the second arc segment 232. At this time, the overall position of the mounting frame 4 remains unchanged; when the first eccentric column 10 rotates into the transverse section 161, the first eccentric column 10 moves downward relative to the transverse section 161 of the first driving hole 16, and at the same time, the first eccentric column 10 drives the connecting frame 15 to slide to the left. At this time, the connecting frame 15 slides to the left and slides downward relative to the mounting frame 4 as a whole. The paddle 17 moves with the movement of the connecting frame 15, driving the side rod 14 to rotate downward, so that the bolt 6 rotates relative to the bolt block 5. When the side rod 14 abuts the bottom end of the strip positioning hole 22, the contours of the bolt block 5 and the bolt 6 are intertwined.

[0059] The utility model can be combined with a mechanical lock or an electronic lock to control the rotation of the drive shaft 8, so that when the mechanical lock or the electronic lock connected to the drive shaft 8 is in a locked state, the part of the bolt 6 that exceeds the outline range of the bolt block 5 is kept in a state of being engaged with the box body 3 or the door frame 2, which greatly increases the safety of the safe.

[0060] The mounting frame 4 is designed together with a mechanical lock or an electronic lock. When the side rod 14 abuts against the bottom end of the strip positioning hole 22, the drive shaft 8 can be twisted to unlock the lateral displacement of the mounting frame 4 only after the mechanical lock or the electronic lock is unlocked.

[0061] The lock head 271 extends outward to abut against the mounting frame 4 to lock the mounting frame 4 that has moved outward to the limit. The retraction and extension of the lock head 271 can be controlled by using a password lock. The electromagnetic lock 27 can be unlocked only when the correct password is entered, thereby unlocking the bolt block 5 and the rotary bolt 6, further increasing the safety of use.

[0062] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A latch mechanism for preventing door bolts from being pried, comprising a door panel (1), a door frame (2) and a box body (3), characterized in that: The door panel (1) is rotatably connected to the box body (3), the door frame (2) is arranged at the opening of the box body (3), the door panel (1) is slidably connected to a mounting frame (4) in a transverse manner, the mounting frame (4) is fixedly connected to a bolt block (5), the outer end of the bolt block (5) is rotatably connected to a rotary bolt (6), the door frame (2) is provided with an avoidance opening (7), the cross-sectional shape of the rotary bolt (6) is adapted to the shape of the avoidance opening (7), the door panel (1) is provided with a driving unit for driving the mounting frame (4) to slide, and the door panel (1) is also provided with a transmission unit for driving the rotary bolt (6) to rotate relative to the bolt block (5); The door panel (1) is rotatably connected to a drive shaft (8), the drive shaft (8) is fixedly connected to a connecting plate (9), the connecting plate (9) is fixedly connected to a second eccentric column (11), the drive shaft (8), the connecting plate (9) and the second eccentric column (11) together constitute the drive unit, the mounting frame (4) is connected to the second eccentric column (11), and the transmission unit includes a first eccentric column (10), and the first eccentric column (10) and the connecting plate (9) are fixedly connected.

2. The anti-pry bolt locking mechanism of a door bolt according to claim 1, characterized in that: The bolt block (5) is provided with an axial hole (12), the rotary bolt (6) is provided with a rotating shaft (13), the rotating shaft (13) and the axial hole (12) are rotatably connected, and the rotating shaft (13) is provided with a side rod (14) extending laterally; the transmission unit also includes a connecting frame (15), a first driving hole (16) and a paddle (17), the connecting frame (15) is vertically slidably connected to the mounting frame (4), the connecting frame (15) and the paddle (17) are fixedly connected, and the paddle (17) is provided with a A limiting opening (18) is provided for the side rod (14) to extend into and fit into, 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), the bottom of the first circular arc section (162) is connected to the transverse section (161); when the first eccentric column (10) is located in the first circular arc section (162), the center of the first circular arc section (162) coincides with the rotation center of the first eccentric column (10).

3. The anti-pry bolt locking mechanism of a door bolt according to claim 2, characterized in that: The mounting frame (4) comprises a mounting plate (401) and a positioning plate (402) which are fixedly connected, the positioning plate (402) and the bolt block (5) are fixedly connected, a mounting column (19) is fixedly connected to the door panel (1), a vertical waist-shaped hole (20) is provided on the connecting frame (15) for the mounting column (19) to extend into, a limiting plate (21) is fixedly connected to the end of the mounting column (19), and two sides of the connecting frame (15) are respectively in contact with the limiting plate (21) and the mounting plate (401).

4. The anti-pry latch mechanism for a door bolt according to claim 3, characterized in that: 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 arranged vertically; when the side rod (14) is rotated to abut 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 interlaced with each other; when the side rod (14) is rotated to abut 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 latch mechanism for preventing door bolts from prying according to claim 3 or 4, characterized in that: The mounting plate (401) is provided with a second driving hole (23) for the second eccentric column (11) to extend into, the second driving hole (23) comprising a vertical section (231) and a second circular arc section (232), the bottom of the vertical section (231) being connected to the second circular arc section (232); when the second eccentric column (11) is located 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) extends outward to a limit distance.

6. The anti-pry latch mechanism for a door bolt according to claim 5, characterized in that: A positioning column (24) is fixedly connected to the door panel (1), a transverse waist-shaped hole (25) is provided on the mounting frame (4) for the positioning column (24) to extend into, a positioning piece (26) is connected to the end of the positioning column (24), and the positioning piece (26) and the mounting plate (401) are in close contact.

7. A latch mechanism for preventing door bolts from prying according to claim 1, 2, 3, 4 or 6, characterized in that: The door panel (1) is provided with an electromagnetic lock (27), the electromagnetic lock (27) comprising a lock head (271), and when the mounting frame (4) slides outward to a limit distance, the lock head (271) extends out to abut against and lock the mounting frame (4).

8. The anti-pry latch mechanism for a door bolt according to claim 7, characterized in that: The cross-sectional shape of the rotary bolt (6) and the shape of the escape opening (7) are both square, rectangular, triangular, rhombus, racetrack or elliptical.

9. A latch mechanism for preventing door bolts from prying according to claim 3, 4 or 6, characterized in that: A locking bolt (28) is fixedly connected to the positioning plate (402); the bolt block (5) and the locking bolt (28) are both provided in two on the positioning plate (402); the locking bolt (28) and the bolt block (5) are equidistantly distributed and vertically arranged on the positioning plate (402); the two bolt blocks (5) are located at the ends of the positioning plate (402); the rotary bolt (6) rotates with the sliding of the connecting frame (15); the two locking bolts (28) are located in the middle of the positioning plate (402); the cross-sectional profile of the rotary bolt (6) and the cross-sectional profile of the bolt block (5) always coincide with each other.

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