Safety lock with double insurance

Abstract

The utility model discloses a safety lockset with double insurance, which comprises a lockset rear panel and a handle rotatably arranged on the lockset rear panel, the lockset rear panel comprises a shell and a cover plate which are detachable through a plurality of screws, the shell is provided with a back locking knob in a penetrating manner, the back locking knob is connected with a back locking plectrum linked with the lockset, and the back locking plectrum is connected with the lockset rear panel. The safety device is characterized in that a safety sliding block is movably arranged in the shell, a rotating disc is arranged on the handle in the shell, a safety groove is formed in the lower end of the rotating disc, a locking block capable of being inserted into the safety groove is arranged at the upper end of the safety sliding block, the safety sliding block is provided with a safety shifting block penetrating out of the shell, and a strip-shaped through hole allowing the safety shifting block to move is formed in the shell. According to the safety lock with the double insurance, the insurance sliding block and the rotating disc are arranged in the rear panel of the lock, the insurance shifting block is shifted upwards to enable the locking block at the upper end of the insurance sliding block to be inserted into the insurance groove of the rotating disc, limiting of the handle is completed, even if a back lock is unlocked, the external handle cannot be rotated to drive the handle to rotate together, and the purpose of double insurance is achieved; and the safety of the lock is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of door locks, in particular to a safety lock with double insurance. Background Art

[0002] At present, the security locks available on the market generally include a rear panel of the lock and a handle that is rotated on the rear panel of the lock. The rear panel of the lock includes a shell and a cover that are detachable by multiple screws. The shell is penetrated by a locking knob, and the locking knob is connected to a locking paddle that is linked to the lock. By rotating the locking knob, the locking paddle is driven to link with the lock to achieve locking. This type of lock has only the security of locking. Once the locking is unlocked, criminals can turn the external handle to open the door, which is not very safe. Summary of the Invention

[0003] In view of the shortcomings of the background technology, the technical problem to be solved by the present invention is to provide a safety lock with double insurance.

[0004] To this end, the present invention is achieved by adopting the following technical solutions:

[0005] A safety lock with double insurance comprises a rear panel of the lock and a handle rotatably arranged on the rear panel of the lock, the rear panel of the lock comprises a shell and a cover plate detachable by a plurality of screws, the shell is provided with an anti-locking knob, and the anti-locking knob is connected to an anti-locking paddle that is linked to the lock, and the characteristic is that a safety slider is movably arranged in the shell, a turntable is provided on the handle in the shell, a safety slot is provided at the lower end of the turntable, a lock block that can be inserted into the safety slot is provided at the upper end of the safety slider, and the safety slider is provided with a safety paddle that passes through the shell, and the shell is provided with a bar-shaped hole that allows the safety paddle to move.

[0006] Furthermore, a base is provided on the inner wall of the shell, and a guide slot for accommodating the sliding of the safety slider is provided on the base, and an opening is provided at the upper end of the guide slot for accommodating the sliding of the safety slider.

[0007] Furthermore, a removable elastic sheet is provided on one side of the base, and the base is provided with a notch aligned with the elastic sheet, the safety slider is provided with a positioning block inserted into the notch, and the middle part of the elastic sheet has a protrusion extending into the notch and blocking the positioning block.

[0008] Furthermore, the left sides of the upper and lower parts of the base are provided with L-shaped grooves for inserting elastic sheets, and the base is screwed with thumb screws that block part of the elastic sheet, and the upper and lower ends of the elastic sheet have bent parts that are inserted into the L-shaped grooves.

[0009] Furthermore, the upper and lower ends of the positioning block both have a first inclined surface, and the upper and lower ends of the protruding portion both have a second inclined surface.

[0010] Furthermore, a column is provided at the center of the bottom surface of the safety slider, and a plurality of reinforcing ribs extend outward from the column.

[0011] Furthermore, the anti-locking knob is in the shape of a truncated cone, the outer ring of the anti-locking knob is provided with anti-slip stripes, and the front of the anti-locking knob is provided with a direction mark.

[0012] After adopting the above technical solution, a safety slider and a turntable are set in the rear panel of the lock. The safety slider is pushed upward to insert the lock block on the upper end of the safety slider into the safety slot of the turntable to complete the limit of the handle. Even if the anti-lock is unlocked, the external handle cannot be turned to drive the handle to rotate together, achieving the purpose of double insurance and making the lock safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model has the following drawings:

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the partial internal structure of the utility model with the cover removed (the lock block is not inserted into the safety slot);

[0016] Figure 3 This is a schematic diagram of the partial internal structure of the utility model with the cover plate removed (the lock block is inserted into the safety slot);

[0017] Figure 4 The figure is a partial structural diagram of the base portion of the housing of the utility model without a thumb screw.

[0018] Figure numerals: 1. rear panel of the lock; 2. handle; 3. housing; 4. anti-lock knob; 5. anti-lock paddle; 6. safety slider; 7. turntable; 8. safety slot; 9. lock block; 10. safety paddle; 11. bar hole; 12. base; 13. guide slot; 14. opening; 15. elastic sheet; 16. notch; 17. positioning block; 18. protrusion; 19. L-shaped slot; 20. thumb screw; 21. bending portion; 22. first inclined plane; 23. second inclined plane; 24. column; 25. reinforcement rib; 26. anti-slip stripe; 27. direction mark. DETAILED DESCRIPTION

[0019] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0020] With reference to the above drawings, the utility model provides a double-insurance safety lock comprising a lock rear panel 1 and a handle 2 rotatably arranged on the lock rear panel 1, the lock rear panel 1 comprising a shell 3 and a cover plate detachable by a plurality of screws, the shell 3 is provided with an anti-locking knob 4, and the anti-locking knob 4 is connected to an anti-locking paddle 5 linked to the lock, characterized in that: a safety slider 6 is movably arranged in the shell 3, a turntable 7 is provided on the handle 2 in the shell 3, a safety slot 8 is provided at the lower end of the turntable 7, a lock block 9 which can be inserted into the safety slot 8 is provided at the upper end of the safety slider 6, and the safety slider 6 is provided with a safety paddle 10 which passes through the shell 3, a bar-shaped hole 11 for allowing the safety paddle 10 to move is provided on the shell 3, a base 12 is provided on the inner wall of the shell 3, a guide slot 13 for allowing the safety slider 6 to slide is provided on the base 12, and an opening 14 for allowing the safety slider 6 to slide out is provided at the upper end of the guide slot 13, the A removable elastic sheet 15 is provided on one side of the base 12, and the base 12 is provided with a notch 16 aligned with the elastic sheet 15. The safety slider 6 is provided with a positioning block 17 inserted into the notch 16. The middle part of the elastic sheet 15 has a protrusion 18 extending into the notch 16 and blocking the positioning block 17. The upper and lower left sides of the base 12 are provided with an L-shaped groove 19 for accommodating the elastic sheet 15 to be inserted, and a thumb screw 20 is screwed on the base 12 to block part of the elastic sheet 15. The upper and lower ends of the elastic sheet 15 have a bent portion 21 inserted into the L-shaped groove 19, the upper and lower ends of the positioning block 17 have a first inclined surface 22, and the upper and lower ends of the protrusion 18 have a second inclined surface 23. A column 24 is provided at the center of the bottom surface of the safety slider 6, and the column 24 extends outward with multiple reinforcing ribs 25. The anti-lock knob 4 is frustum-shaped, and the outer ring of the anti-lock knob 4 is provided with anti-slip stripes 26, and the front of the anti-lock knob 4 is provided with a direction mark 27.

[0021] When the door needs to be opened, the safety dial 10 is dialed downward and the anti-lock knob 4 is reversed to release the double insurance, and then the handle 2 is turned.

[0022] In this embodiment, a safety slider 6 and a rotary disk 7 are provided in the rear panel of the lock. The safety dial block 10 is dialed upward so that the lock block 9 at the upper end of the safety slider 6 is inserted into the safety slot 8 of the rotary disk 7, thereby completing the position limitation of the handle 2. Even if the anti-lock is unlocked, the external handle cannot be rotated to drive the handle 2 to rotate together, thereby achieving the purpose of double insurance and making the lock more secure. The setting of the guide slot 13 makes the sliding of the safety slider 6 more accurate. The cooperation of the elastic piece 15, the positioning block 17 and the protrusion 18 makes the safety slider 6 have a supporting and positioning function after moving upward. Prevent the safety slider 6 from sliding downward; the bent portion 21 of the elastic sheet 15 is inserted into the L-shaped groove 19 and blocked by the thumb screw 20 to prevent the elastic sheet 15 from falling out, making the structure more stable; the setting of the first inclined surface 22 and the second inclined surface 23 makes the safety slider 6 smoother when moving up and down; the setting of the column 24 and the reinforcing rib 25 makes the structural strength of the safety slider 6 higher and increases its service life; the setting of the anti-slip stripes 26 can prevent the anti-lock knob 4 from slipping, and the setting of the direction mark 27 enables the user to better distinguish whether the lock is locked.

[0023] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A double-safety security lock comprising a rear panel and a handle rotatably mounted on the rear panel, wherein the rear panel comprises a housing and a cover detachable by a plurality of screws, wherein the housing is provided with a locking knob connected to a locking paddle that is linked to the lock, and wherein: A safety slider is movably provided in the shell, a turntable is provided on the handle in the shell, a safety slot is provided at the lower end of the turntable, a locking block that can be inserted into the safety slot is provided at the upper end of the safety slider, and the safety slider is provided with a safety shift block that passes through the shell, and a bar-shaped hole is provided on the shell to allow the safety shift block to move.

2. A double-safety safety lock according to claim 1, characterized in that: The inner wall of the shell body is provided with a base, and the base is provided with a guide slide groove for accommodating the sliding of the safety slider, and the upper end of the guide slide groove is provided with an opening for accommodating the sliding of the safety slider.

3. The double-safety safety lock according to claim 2, characterized in that: A removable elastic sheet is provided on one side of the base, and a notch is provided on the base to align with the elastic sheet. The safety slider is provided with a positioning block inserted into the notch, and the middle part of the elastic sheet has a protrusion extending into the notch and blocking the positioning block.

4. The double-safety lock according to claim 3, characterized in that: The left sides of the upper and lower parts of the base are both provided with L-shaped grooves for inserting elastic sheets, and the base is screwed with thumb screws that block part of the elastic sheet. The upper and lower ends of the elastic sheet have bending parts that are inserted into the L-shaped grooves.

5. The double-safety lock according to claim 3, characterized in that: The upper and lower ends of the positioning block both have a first inclined surface, and the upper and lower ends of the protruding portion both have a second inclined surface.

6. A double-safety safety lock according to any one of claims 1 to 5, characterized in that: A column is provided at the center of the bottom surface of the safety sliding block, and a plurality of reinforcing ribs are extended outward from the column.

7. The double-safety safety lock according to claim 6, characterized in that: The anti-locking knob is in the shape of a truncated cone, the outer ring of the anti-locking knob is provided with anti-slip stripes, and the front of the anti-locking knob is provided with a direction mark.

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