Anti-peephole unlocking device

Abstract

The present invention relates to an anti-cat's-eye unlocking device, comprising a handle, a lock panel, a reset torsion spring, a reset baffle and a rotating shaft, wherein the handle is placed on one side of the lock panel, and the reset torsion spring and the reset baffle are placed on the other side of the lock panel; the rotating shaft portion of the handle passes through the lock panel and the reset torsion spring and is fixedly connected to the reset baffle; one torsion arm of the reset torsion spring abuts against the lock panel, and the other torsion arm abuts against the reset baffle; a latch is arranged in the base portion of the handle, a shift block is arranged on the side wall of the base portion of the handle close to the lock panel, and one end of the shift block extends into the base portion of the handle and is connected with the latch; the rotating shaft is placed on the side of the lock panel away from the handle, and one end of the rotating shaft passes through the reset baffle and extends into the rotating shaft portion of the handle; the end of the latch extends into the rotating shaft. Compared with the prior art, the present invention realizes anti-cat's-eye unlocking and is convenient for lifting and locking.

Description

Technical Field

[0001] The present invention relates to the technical field of locks, and in particular to a cat-eye-proof unlocking device. Background Art

[0002] There are safety hazards at the peephole of the anti-theft door. Criminals can use tools to directly press down the indoor handle from the peephole to quickly open the door. In the existing technology, the anti-peephole unlocking method almost always adds a button on the indoor handle. Pressing the button and pressing the handle at the same time can unlock the door, which is inconvenient to use. Lifting up to lock the door also requires pressing a button to operate. Therefore, it is necessary to solve these problems. Summary of the invention

[0003] The present invention aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, one object of the present invention is to provide a peephole-proof unlocking device which is convenient for lifting and locking.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: an anti-cat's eye unlocking device comprises a handle, a lock panel, a reset torsion spring, a reset baffle and a rotating shaft, wherein the handle is placed on one side of the lock panel, and the reset torsion spring and the reset baffle are placed on the other side of the lock panel; the rotating shaft of the handle passes through the lock panel and the reset torsion spring and is fixedly connected to the reset baffle; one torsion arm of the reset torsion spring abuts against the lock panel, and the other torsion arm abuts against the reset baffle;

[0005] A latch is arranged in the base of the handle, and a shift block is arranged on the side wall of the base of the handle close to the lock panel, and one end of the shift block extends into the base of the handle and is fixedly connected with the latch;

[0006] The rotating shaft is placed on a side of the lock panel away from the handle, and one end of the rotating shaft passes through the reset baffle and extends into the rotating shaft portion of the handle; the end of the latch extends into the rotating shaft, and the shift block can drive the end of the latch to move within the end of the rotating shaft, and the latch can clamp the rotating shaft or unlock the rotating shaft.

[0007] The beneficial effects of the present invention are as follows: by arranging a shift block and a latch on the handle, the shift block is used to drive the latch to move, and the latch and the rotating shaft are controlled to be engaged or disengaged; when the latch and the rotating shaft are loose, the handle is pressed down and the lock cannot be unlocked, thereby achieving anti-cat's eye unlocking.

[0008] Based on the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, a circular hole is provided on the end of the rotating shaft extending into the handle, and a card slot is provided at both ends of the circular hole; the two card slots are connected to the circular hole; a pin is fixedly connected to the end of the latch close to the rotating shaft, and when the latch moves, it drives the pin to extend into the card slot, and the latch locks the rotating shaft; when the latch moves, it drives the pin to extend into the circular hole, and the latch unlocks the rotating shaft.

[0010] The beneficial effect of adopting the above further scheme is: by moving the pin into the slot or the round hole, the anti-cat's eye unlocking function can be turned on or off, the structure is simple, the operation is convenient, and the service life is long.

[0011] Furthermore, a spring sheet is provided in the base portion of the handle, and the spring sheet is fixedly connected to the inner wall of the base portion of the handle; the spring sheet is in close contact with the latch, a protrusion is provided on the side wall of the spring sheet close to the latch, and a groove is provided on the side wall of the latch close to the spring sheet at a position corresponding to the protrusion, and when the latch moves, the groove is driven to move, and the protrusion can be sunk into the groove.

[0012] The beneficial effects of adopting the above further solution are: the resistance applied by the spring sheet increases the feedback of the latch and the shift block; the spring sheet limits the position of the latch to achieve the normally open or normally closed state of the anti-cat-eye function.

[0013] Furthermore, a through hole is provided on the lock panel, and the end of the handle passes through the through hole and the reset torsion spring and is fixedly connected to the reset baffle; an annular groove is provided on the end surface of the lock panel close to the handle, and the annular groove surrounds the through hole; a bearing is provided in the annular groove, and the bearing is sleeved on the end of the handle, and the end of the handle is rotatably connected to the lock panel through the bearing.

[0014] The beneficial effect of adopting the above further solution is that the end of the handle is rotatably connected to the lock panel through the bearing, which can effectively reduce the friction during the rotation of the handle and extend the service life.

[0015] Furthermore, a retaining spring is provided at one end of the reset baffle away from the reset torsion spring. The retaining spring is sleeved on the rotating shaft portion of the handle and is fixedly connected to the end of the handle.

[0016] The beneficial effect of adopting the above further solution is: the clamping spring is used to limit the displacement of the rotating shaft portion of the handle along its axial direction, so that the handle rotates more smoothly and has a longer service life.

[0017] Furthermore, a positioning column is provided on the side wall of the reset baffle away from the reset torsion spring, and the positioning column is fixedly connected to the reset baffle; a limiting groove is provided on the end of the rotating shaft away from the handle, and the limiting groove is arranged along the end edge of the rotating shaft; the positioning column is limited in the limiting groove.

[0018] The beneficial effect of adopting the above further solution is that the handle can be easily lifted and locked without being restricted by turning the anti-peephole function on or off.

[0019] Furthermore, a fixing plate is mounted on one end of the rotating shaft away from the handle, and the rotating shaft is rotatably connected to the fixing plate; the fixing plate is also fixedly connected to the lock panel by screws.

[0020] The beneficial effect of adopting the above further solution is that the fixing plate limits the displacement of the rotating shaft along its axial direction, so that the rotating shaft rotates more smoothly and has a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of a disassembled anti-peephole unlocking device of the present invention;

[0022] Figure 2 It is a schematic diagram of the disassembly of the handle of the present invention;

[0023] Figure 3 It is a schematic diagram of two split parts of the anti-peephole unlocking device of the present invention;

[0024] Figure 4 It is a schematic diagram of the anti-peephole unlocking device of the present invention when it is lifted and locked;

[0025] Figure 5 A schematic diagram of the structure of the anti-peephole unlocking device of the present invention;

[0026] Figure 6 A schematic diagram of the structure of the rotating shaft and the latch of the present invention;

[0027] Figure 7 It is a second structural schematic diagram of the anti-cat-eye unlocking device of the present invention;

[0028] Figure 8 Schematic diagram of the second structure of the rotating shaft and the latch of the present invention.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] 1. Handle;

[0031] 2. Lock panel, 2.1. Perforation;

[0032] 3. Reset torsion spring;

[0033] 4. Reset baffle, 4.1. Positioning column;

[0034] 5. rotating shaft, 5.1. round hole, 5.2. card slot, 5.3. limiting slot;

[0035] 6. Latch, 6.1. Pin, 6.2. Slot;

[0036] 7. Dial the block;

[0037] 8. Shrapnel, 8.1. Bump;

[0038] 9. Bearings;

[0039] 10. Circlip;

[0040] 11. Fixing plate. DETAILED DESCRIPTION

[0041] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0042] like Figures 1 to 8 As shown, the anti-cat's eye unlocking device comprises a handle 1, a lock panel 2, a reset torsion spring 3, a reset baffle 4 and a rotating shaft 5, wherein the handle 1 is placed on one side of the lock panel 2, and the reset torsion spring 3 and the reset baffle 4 are placed on the other side of the lock panel 2; the rotating shaft portion of the handle 1 passes through the lock panel 2 and the reset torsion spring 3 and is fixedly connected to the reset baffle 4; one torsion arm of the reset torsion spring 3 abuts against the lock panel 2, and the other torsion arm abuts against the reset baffle 4;

[0043] A latch 6 is provided in the base of the handle 1, and a shift block 7 is provided on the side wall of the base of the handle 1 close to the lock panel 2, and one end of the shift block 7 extends into the base of the handle 1 and is fixedly connected to the latch 6;

[0044] A slide groove is provided on the side wall of the base portion of the handle 1 at a position corresponding to the shift block 7, and the shift block 7 can move along the slide groove;

[0045] The rotating shaft 5 is placed on a side of the lock panel 2 away from the handle 1, and one end of the rotating shaft 5 is detachably connected to the reset baffle 4 and is connected to the square core; the other end of the rotating shaft 5 passes through the reset baffle 4 and extends into the rotating shaft portion of the handle 1; the end of the latch 6 extends into the rotating shaft 5, and the shift block 7 can drive the end of the latch 6 to move in the end of the rotating shaft 5, and the latch 6 can clamp the rotating shaft 5 or loosen the rotating shaft 5.

[0046] Manually push the shift block 7 to move forward, the shift block 7 drives the latch 6 to move, and the latch 6 clamps the rotating shaft 5; manually push the handle 1 to rotate counterclockwise, the rotating shaft of the handle 1 drives the reset baffle 4 to rotate counterclockwise, and the reset baffle 4 drives the reset torsion spring 3 to twist; at the same time, the handle 1 drives the rotating shaft 5 to rotate counterclockwise through the shift block 7 and the latch 6, and the rotating shaft 5 drives the square core to unlock during the counterclockwise rotation; release the handle 1, the reset torsion spring 3 drives the reset baffle 4 to rotate, and the reset baffle 4 drives the handle 1 to reset;

[0047] Manually push the shift block 7 to move in the opposite direction, the shift block 7 drives the latch 6 to move, and the latch 6 loosens the shaft 5; manually push the handle 1 to rotate counterclockwise, the shaft of the handle 1 drives the reset baffle 4 to rotate counterclockwise, and the reset baffle 4 drives the reset torsion spring 3 to twist; at the same time, the handle 1, the shift block 7 and the latch 6 rotate counterclockwise relative to the shaft 5, and the lock cannot be unlocked; release the handle 1, the reset torsion spring 3 drives the reset baffle 4 to rotate, and the reset baffle 4 drives the handle 1 to reset;

[0048] In this embodiment, a shift block 7 and a latch 6 are arranged on the handle 1, and the shift block 7 is used to drive the latch 6 to move, thereby controlling the latch 6 and the rotating shaft 5 to be engaged or disengaged; when the latch 6 and the rotating shaft 5 are loosened, the handle 1 is pressed to rotate counterclockwise, and the lock cannot be unlocked, thereby realizing anti-cat's eye unlocking.

[0049] In the above embodiment, a circular hole 5.1 is provided on the end of the rotating shaft 5 extending into the handle 1, and a clamping groove 5.2 is provided at both ends of the circular hole 5.1; the two clamping grooves 5.2 are both connected to the circular hole 5.1; a pin 6.1 is fixedly connected to the end of the latch 6 close to the rotating shaft 5, and when the latch 6 moves, it drives the pin 6.1 to extend into the clamping groove 5.2, and the latch 6 locks the rotating shaft 5; when the latch 6 moves, it drives the pin 6.1 to extend into the circular hole 5.1, and the latch 6 unlocks the rotating shaft 5.

[0050] Manually push the shift block 7 to move forward, the shift block 7 drives the latch 6 to move forward, the latch 6 drives the pin 6.1 to be clamped into the clamping groove 5.2, the latch 6 is connected to the rotating shaft 5 through the pin 6.1 and the clamping groove 5.2, so that the latch 6 clamps the rotating shaft 5;

[0051] Manually push the shift block 7 to move in the reverse direction, the shift block 7 drives the latch 6 to move in the reverse direction, the latch 6 drives the pin 6.1 to leave the card slot 5.2 and enter the round hole 5.1, the outer diameter of the pin 6.1 is smaller than the inner diameter of the round hole 5.1, the latch 6 is loosened from the rotating shaft 5, the latch 6 can rotate relative to the rotating shaft 5, and cannot drive the rotating shaft 5 to rotate, and thus cannot be unlocked;

[0052] In this embodiment, the pin 6.1 is moved into the card slot 5.2 or the round hole 5.1 to realize opening or closing the anti-peephole unlocking function, which has a simple structure, convenient operation and long service life.

[0053] In the above embodiment, a spring sheet 8 is arranged in the base portion of the handle 1, and the spring sheet 8 is fixedly connected to the inner wall of the base portion of the handle 1; the spring sheet 8 is in close contact with the latch 6, and a protrusion 8.1 is arranged on the side wall of the spring sheet 8 close to the latch 6, and a groove 6.2 is arranged on the side wall of the latch 6 close to the spring sheet 8 at a position corresponding to the protrusion 8.1, and when the latch 6 moves, the groove 6.2 is driven to move, and the protrusion 8.1 can be sunk into the groove 6.2.

[0054] The spring piece 8 is in close contact with the latch 6. When the shift block 7 drives the latch 6 to move, the latch 6 moves in close contact with the spring piece 8. The resistance exerted by the spring piece 8 increases the feedback feeling of the latch 6 and the shift block 7.

[0055] Two slots 6.2 are provided, and the two slots 6.2 are arranged in parallel; the shift block 7 drives the latch 6 to move forward, and one slot 6.2 of the latch 6 moves to the convex block 8.1, and the latch 6 is limited by the matching of the slot 6.2 and the convex block 8.1; the shift block 7 drives the latch 6 to move reversely, and the other slot 6.2 of the latch 6 moves to the convex block 8.1, and the latch 6 is limited by the matching of the slot 6.2 and the convex block 8.1;

[0056] In this embodiment, the spring piece 8 limits the latch pin 6 to realize the normally open or normally closed state of the anti-peephole function.

[0057] In the above embodiment, a through hole 2.1 is provided on the lock panel 2, and the end of the handle 1 passes through the through hole 2.1 and the reset torsion spring 3 and is fixedly connected to the reset baffle 4; an annular groove is provided on the end surface of the lock panel 2 close to the handle 1, and the annular groove surrounds the through hole 2.1; a bearing 9 is provided in the annular groove, and the bearing 9 is sleeved on the end of the handle 1, and the end of the handle 1 is rotatably connected to the lock panel 2 through the bearing 9.

[0058] The end of the handle 1 is rotatably connected to the lock panel 2 via a bearing 9, which can effectively reduce the friction during the rotation of the handle 1 and extend the service life.

[0059] In the above embodiment, a retaining spring 10 is provided at one end of the reset baffle 4 away from the reset torsion spring 3 . The retaining spring 10 is sleeved on the rotating shaft of the handle 1 and fixedly connected to the end of the handle 1 .

[0060] An annular protrusion is arranged on the end surface of the lock panel 2 close to the reset baffle 4, and the protrusion is fixedly connected to the lock panel 2; an annular groove is arranged on the protrusion, and the retaining ring 10 is sleeved in the annular groove.

[0061] In this embodiment, the clamping spring 10 is used to limit the displacement of the rotating shaft of the handle 1 along its axial direction, so that the handle 1 rotates more smoothly and has a longer service life.

[0062] In the above embodiment, a positioning column 4.1 is provided on the side wall of the reset baffle 4 away from the reset torsion spring 3, and the positioning column 4.1 is fixedly connected to the reset baffle 4; a limiting groove 5.3 is provided on the end of the rotating shaft 5 away from the handle 1, and the limiting groove 5.3 is arranged along the end edge of the rotating shaft 5; the positioning column 4.1 is limited in the limiting groove 5.3.

[0063] Manually push the handle 1 to rotate clockwise, the shaft of the handle 1 drives the reset baffle 4 to rotate counterclockwise, and the reset baffle 4 drives the reset torsion spring 3 to twist; at the same time, the reset baffle 4 drives the positioning column 4.1 to rotate clockwise in the limit groove 5.3. When the positioning column 4.1 rotates to the edge of the limit groove 5.3, the positioning column 4.1 drives the rotating shaft 5 to rotate clockwise, so that the handle 1 is lifted up to drive the square core to be locked; the handle 1 is convenient to lift and lock, and is not restricted by the opening or closing of the anti-peephole function.

[0064] In the above embodiment, a fixing plate 11 is mounted on one end of the rotating shaft 5 away from the handle 1 , and the rotating shaft 5 is rotatably connected to the fixing plate 11 ; the fixing plate 11 is also fixedly connected to the lock panel 2 by screws.

[0065] An annular groove is provided at the end of the rotating shaft 5 close to the fixing plate 11, and the annular groove is arranged along the edge of the rotating shaft 5; a circular hole is provided in the middle of the fixing plate 11, and the circular hole of the fixing plate 11 is sleeved in the annular groove of the rotating shaft 5, and the rotating shaft 5 and the fixing plate 11 are rotatably connected; the fixing plate 11 limits the displacement of the rotating shaft 5 along its axial direction, so that the rotating shaft 5 rotates more smoothly and has a longer service life.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Anti-cat's-eye unlocking device, characterized by: The invention comprises a handle (1), a lock panel (2), a reset torsion spring (3), a reset baffle (4) and a rotating shaft (5); the handle (1) is arranged on one side of the lock panel (2), and the reset torsion spring (3) and the reset baffle (4) are arranged on the other side of the lock panel (2); the rotating shaft of the handle (1) passes through the lock panel (2) and the reset torsion spring (3) and is fixedly connected to the reset baffle (4); one torsion arm of the reset torsion spring (3) abuts against the lock panel (2), and the other torsion arm abuts against the reset baffle (4); A latch (6) is arranged in the base of the handle (1), and a shift block (7) is arranged on the side wall of the base of the handle (1) close to the lock panel (2), and one end of the shift block (7) extends into the base of the handle (1) and is fixedly connected to the latch (6); The rotating shaft (5) is disposed on a side of the lock panel (2) away from the handle (1); one end of the rotating shaft (5) passes through the reset baffle (4) and extends into the rotating shaft portion of the handle (1); the end of the latch (6) extends into the rotating shaft (5); the shift block (7) can drive the end of the latch (6) to move within the end of the rotating shaft (5); the latch (6) can clamp the rotating shaft (5) or unlock the rotating shaft (5); A spring sheet (8) is arranged in the base of the handle (1), and the spring sheet (8) is fixedly connected to the inner wall of the base of the handle (1); the spring sheet (8) is in close contact with the latch (6); a convex block (8.1) is arranged on the side wall of the spring sheet (8) close to the latch (6); a groove body (6.2) is arranged on the side wall of the latch (6) close to the spring sheet (8) corresponding to the convex block (8.1); when the latch (6) moves, the groove body (6.2) is driven to move, and the convex block (8.1) can be sunk into the groove body (6.2).

2. The anti-cat's eye unlocking device according to claim 1, characterized in that: A circular hole (5.1) is arranged on the end of the rotating shaft (5) extending into the handle (1), and both ends of the circular hole (5.1) are provided with a clamping groove (5.2); the two clamping grooves (5.2) are both connected to the circular hole (5.1); a pin (6.1) is fixedly connected to the end of the latch (6) close to the rotating shaft (5); when the latch (6) moves, the pin (6.1) is driven to extend into the clamping groove (5.2), and the latch (6) locks the rotating shaft (5); when the latch (6) moves, the pin (6.1) is driven to extend into the circular hole (5.1), and the latch (6) unlocks the rotating shaft (5).

3. The anti-cat's eye unlocking device according to claim 1, characterized in that: The lock panel (2) is provided with a through hole (2.1), and the end of the handle (1) passes through the through hole (2.1) and the reset torsion spring (3) to be fixedly connected to the reset baffle (4); an annular groove is provided on the end surface of the lock panel (2) close to the handle (1), and the annular groove surrounds the through hole (2.1); a bearing (9) is provided in the annular groove, and the bearing (9) is sleeved on the end of the handle (1), and the end of the handle (1) is rotatably connected to the lock panel (2) through the bearing (9).

4. The anti-cat's eye unlocking device according to claim 1, characterized in that: A retaining spring (10) is provided at one end of the reset baffle (4) away from the reset torsion spring (3); the retaining spring (10) is sleeved on the rotating shaft of the handle (1) and is fixedly connected to the end of the handle (1).

5. The anti-cat's eye unlocking device according to claim 1, characterized in that: A positioning column (4.1) is provided on the side wall of the reset baffle (4) away from the reset torsion spring (3), and the positioning column (4.1) is fixedly connected to the reset baffle (4); a limiting groove (5.3) is provided on an end of the rotating shaft (5) away from the handle (1), and the limiting groove (5.3) is arranged along the end edge of the rotating shaft (5); the positioning column (4.1) is limited in the limiting groove (5.3).

6. The anti-cat's eye unlocking device according to claim 1, characterized in that: A fixing plate (11) is mounted on one end of the rotating shaft (5) away from the handle (1), and the rotating shaft (5) is rotatably connected to the fixing plate (11); the fixing plate (11) is also fixedly connected to the lock panel (2) via screws.

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