Intelligent lock anti-peephole opening structure

Abstract

The present invention discloses an anti-peephole opening structure for an intelligent lock, which includes a lock body housing, a handle head, a handle reversing head, and an inner handle. The handle head is rotatably installed inside the lock body housing. The inner handle extends into the interior of the lock body housing from the outside of the side of the lock body housing facing the indoor side and is coaxially fixedly connected to the handle head. The handle reversing head is rotatably installed inside the lock body housing. The handle reversing head and the handle head are coaxially opposed and can rotate relative to each other. A clutch pin is slidably installed on the handle head or the handle reversing head at a set distance. An eccentric clutch slot is provided on the handle reversing head or the handle head. A theft-proof dial is also slidably installed on the lock body housing. The operating part of the theft-proof dial extends out of the surface of the lock body housing facing the indoor side. The movement of the theft-proof dial can drive the clutch pin to slide so that it is inserted into or withdrawn from the clutch slot. The structure of the present invention is simple and convenient to operate, and can effectively prevent outsiders from hooking the inner handle through the peephole of the anti-theft door to open the door, improving the security of the door lock.

Description

Technical Field

[0001] The invention relates to an intelligent door lock, and in particular to an intelligent lock anti-peephole opening structure. Background Art

[0002] Currently, many security doors are equipped with peepholes for observing outdoor conditions from indoors. Since the smart door lock can be opened by pressing the handle indoors, some people use the peephole hole of the security door to extend tools into the room, and use the tools to press the handle to open the security door. Especially for security doors with large peephole holes, the peephole can be easily damaged, and the tool can be inserted to move the handle of the smart door lock located indoors, resulting in low safety in the use of security doors, posing a threat to the personal and property safety of the owner. Summary of the invention

[0003] In order to make up for the above shortcomings, the present invention provides a smart lock anti-peephole opening structure, which can separate the door lock handle head from the indoor handle, preventing outsiders from using the cat's eye hole of the anti-theft door to hook the door handle to open the door, thereby improving the safety of the smart door lock.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a smart lock anti-cat's eye opening structure, including a lock body shell, a handle head, a handle reversing head and an inner handle, the handle head can be rotatably installed in the lock body shell, the inner handle extends from the outside of the lock body shell toward the indoor side into the lock body shell and is coaxially fixed with the handle head, the handle reversing head can be rotatably installed in the lock body shell, the handle reversing head and the handle head can be coaxially opposite to each other and can rotate relative to each other, a clutch pin can be slidably installed on the handle head or the handle reversing head a set distance, an eccentric clutch slot is provided on the handle reversing head or the handle head, an anti-theft dial button can also be slidably installed on the lock body shell, the operating part of the anti-theft dial button extends out from the surface of the lock body shell facing the indoor side, and the movement of the anti-theft dial button can drive the clutch pin to slide and insert or withdraw it from the clutch slot.

[0005] As a further improvement of the invention, a clutch elastic member is further provided on the handle head, and the clutch elastic member provides an elastic reset force for the clutch pin to keep it disengaged from the clutch slot on the handle reversing head.

[0006] As a further improvement of the invention, a T-shaped clutch pin slideway is further provided inside the handle head. The clutch pin can be slidably inserted into the clutch pin slideway. The end with a smaller diameter of the clutch pin slideway can be directly opposite to the opening of the clutch slot on the handle head. The clutch elastic member is sleeved outside the clutch pin. A circumferential radial convex retaining ring is formed on the outer circumferential surface of the clutch pin. Both sides of the clutch elastic member respectively abut tightly against the radial convex retaining ring on the clutch pin and the step surface of the clutch pin slideway. An annular clutch pin sealing door is fixedly installed on the opening at the end with a larger sliding diameter of the clutch pin. The clutch pin can be slidably inserted into the inner hole of the clutch pin sealing door. The radial convex retaining ring on the clutch pin abuts against the surface of the clutch pin sealing door on the side away from the clutch elastic member.

[0007] As a further improvement of the invention, the handle reversing head is coaxially inserted into the handle head. The clutch slot is located on the outer circumferential side wall of the handle reversing head. Two clutch slots are symmetrically arranged on two opposite sides of the handle reversing head. Two clutch pins can be respectively installed in the handle head to slide radially. The two clutch pins are respectively directly opposite to the clutch slots on the two opposite side walls of the handle reversing head.

[0008] As a further improvement of the invention, the end of the clutch pin facing away from the handle reversing head can extend outside the handle head by a set distance. A clutch pin stop block can also be slidably arranged inside the lock body housing. The clutch pin stop block can tightly abut against the end of the clutch pin facing away from the handle reversing head. An inclined chute with an angle with the horizontal direction is provided on the clutch pin stop block. The anti-theft dial can be installed on the surface of the lock body housing to slide horizontally. A convex column is fixedly provided on the anti-theft dial. The convex column can be slidably arranged in the inclined chute of the clutch pin stop block.

[0009] As a further improvement of the invention, a first limit groove and a second limit groove are arranged at intervals on the inner side wall of the lock body housing along the sliding direction of the anti-theft dial. An elastic limit member is installed on the side wall of the anti-theft dial. The elastic limit member can elastically deform along the depth direction of the first limit groove and the second limit groove. The elastic limit member can be clamped into the first limit groove or the second limit groove as the anti-theft dial slides.

[0010] As a further improvement of the invention, a limit sleeve is provided on the side wall of the anti-theft dial. The elastic limit member is a limit spring and a steel ball inserted into the limit sleeve. Both ends of the limit spring respectively abut tightly against the inner bottom surface of one end of the limit sleeve and the surface of the steel ball. The steel ball can be slidably arranged in the limit sleeve. An opening smaller than the diameter of the steel ball is formed at the other end of the limit sleeve. The part of the steel ball exposed outside the other end of the limit sleeve through the opening of the limit sleeve can be inserted into the first limit groove and the second limit groove.

[0011] As a further improvement of the invention, a long strip-shaped opening for the operation part of the anti-theft dial to extend out is provided on the lock body housing. The anti-theft dial is also provided with a first coloring area and a second coloring area. The colors of the first coloring area and the second coloring area are different, and the first coloring area and the second coloring area are respectively located on both sides of the operation part. The first coloring area and the second coloring area can slide with the anti-theft dial and alternately face and expose the long strip-shaped opening of the lock body housing.

[0012] As a further improvement of the invention, a return elastic member and a return stop block are also provided. The return stop block is eccentrically and fixedly connected to the handle reversing head. The two return elastic members are respectively located on both sides of the return stop block along its rotation direction. One end of the return elastic member is fixedly connected to the inner side wall of the lock body housing, and the other end of the return elastic member respectively abuts against both side walls of the return stop block along its rotation direction.

[0013] As a further improvement of the invention, a spring pressing block is also provided. The spring pressing block is fixedly installed on the handle head inside the lock body housing. An arc-shaped slideway is formed on the spring pressing block. The return elastic member and the return stop block are respectively arranged in the arc-shaped slideway of the spring pressing block.

[0014] The beneficial technical effects of the present invention are as follows: By rotatably connecting the handle head coaxially connected to the inner handle with the handle reversing head, by slidably arranging a clutch pin on the handle head, and by driving the clutch pin to slide through the anti-theft dial, the handle head and the handle reversing head can be rotationally stopped or rotatably connected in the circumferential direction. Furthermore, when operating the anti-theft switch to make it in the anti-theft state, the handle head and the handle reversing head are disengaged. Even if a tool is inserted through the cat's eye and the inner handle is pulled, the handle reversing head cannot be driven to rotate, and thus the square bar cannot be driven to turn to unlock, achieving the anti-theft effect. The structure of the present invention is simple and the operation is convenient, which can effectively prevent outsiders from hooking the inner handle through the cat's eye hole of the anti-theft door to open the door and improve the security of the door lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is an exploded view of the present invention;

[0016] Figure 2 is a front view of the present invention in the state of preventing cat's eye opening;

[0017] Figure 3 is Figure 2 a sectional view taken along the line A-A in

[0018] Figure 4 is Figure 2 a sectional view taken along the line B-B in

[0019] Figure 5 is a front view of the present invention in the state of preventing cat's eye closing;

[0020] Figure 6 is Figure 5Cross-sectional view in the C-C direction;

[0021] Figure 7 is Figure 5 Cross-sectional view in the D-D direction;

[0022] Figure 8 Schematic diagram of the return principle of the handle reversing head;

[0023] Figure 9 Front view of the intelligent door lock adopting the present invention. Specific implementation manner

[0024] Embodiment: An anti-peeping opening structure for an intelligent lock, including a lock body housing 1, a handle head 2, a handle reversing head 3 and an inner handle 4. The handle head 2 is rotatably installed inside the lock body housing 1. The inner handle 4 extends into the lock body housing 1 from the outside of the lock body housing 1 on the indoor side and is coaxially fixedly connected to the handle head 2. The handle reversing head 3 is rotatably installed inside the lock body housing 1. The handle reversing head 3 and the handle head 2 are coaxially and oppositely arranged and can rotate relative to each other. A clutch pin 5 is slidably installed on the handle head 2 or the handle reversing head 3 by a set distance. An eccentric clutch slot 6 is provided on the handle reversing head 3 or the handle head 2. A theft-proof dial 7 is also slidably installed on the lock body housing 1. The operating part 22 of the theft-proof dial 7 extends out of the surface of the lock body housing 1 on the indoor side. The movement of the theft-proof dial 7 can drive the clutch pin 5 to slide so that it is inserted into or withdrawn from the clutch slot 6.

[0025] When the theft-proof dial 7 is toggled to make the door lock in the anti-peeping opening state, the clutch pin 5 on the handle head 2 is disengaged from the clutch slot 6 on the handle reversing head 3. At this time, the handle head 2 and the handle reversing head 3 are in a state where they can rotate relative to each other. Turning the handle head 2 cannot drive the handle reversing head 3 to rotate, and thus cannot drive the square bar 8 installed on the handle reversing head 3 to rotate to open the door. When the theft-proof dial 7 is toggled to make the door lock in the anti-peeping closed state, the clutch pin 5 on the handle head 2 is inserted into the clutch slot 6 on the handle reversing head 3. At this time, the handle head 2 and the handle reversing head 3 are in a fixed connection state. Turning the handle head 2 will drive the handle reversing head 3 to rotate, and thus realize indoor door opening.

[0026] A clutch elastic member 9 is also provided on the handle head 2. The clutch elastic member 9 provides an elastic reset force for the clutch pin 5 to keep it disengaged from the clutch slot 6 on the handle reversing head 3. Through the clutch elastic member 9, the clutch pin automatically disengages from the clutch slot 6 when the theft-proof dial 7 is in the anti-peeping opening state, avoiding the situation where they are not disengaged when the anti-peeping opening state occurs.

[0027] A T-shaped clutch pin slideway 10 is also provided in the handle head 2, and the clutch pin 5 can be slidably inserted in the clutch pin slideway 10, and the end of the clutch pin slideway 10 with a smaller diameter can be directly opposite to the opening of the clutch slot 6 on the handle head 2, and the clutch elastic member 9 is sleeved on the outside of the clutch pin 5. A circle of radial convex block ring 11 is formed on the outer surface of the circumference of the clutch pin 5, and the two sides of the clutch elastic member 9 are respectively tightly connected to the radial convex block ring 11 on the clutch pin 5 and the step surface of the clutch pin slideway 10, and an annular clutch pin sealing door 12 is also fixedly installed on the opening of the end with a larger sliding diameter of the clutch pin 5, and the clutch pin 5 can be slidably inserted in the inner hole of the clutch pin sealing door 12, and the radial convex block ring 11 on the clutch pin 5 is stopped on the surface of the clutch pin sealing door 12 away from the clutch elastic member 9.

[0028] The clutch pin 5 slides in the clutch pin slide 10, and the radial convex block ring 11 thereon is blocked by the step of the clutch pin slide 10 and the clutch pin sealing door 12 to limit the sliding distance. The clutch elastic member 9 can adopt a compression spring, which has a simple structure and is easy to assemble. In addition, a tension spring can also be used. These are equivalent replacement structures that are easily thought of by technical personnel in this field after seeing this patent.

[0029] The handle reversing head 3 is coaxially inserted in the handle head 2, the clutch slot 6 is located on the outer circumferential wall of the handle reversing head 3, two clutch slots 6 are symmetrically arranged on two opposite sides of the handle reversing head 3, and two clutch pins 5 are respectively installed in the handle head 2 in a radially slidable manner, and the two clutch pins 5 are respectively opposite to the clutch slots 6 on the two opposite side walls of the handle reversing head 3. When reversing is required, it is only necessary to flip the handle reversing head 3 180 degrees (the handle reversing head 3 drives the reversing baffle 27 to rotate synchronously at the same time), which will not affect the insertion of the clutch pin 5 and the clutch slot to prevent the cat's eye from opening, and can adapt to the requirements of changing the installation direction of the door lock handle.

[0030] The end of the clutch pin 5 facing away from the handle reversing head 3 can extend outward of the handle head 2 by a set distance. A clutch pin stopper 13 can also be slidably provided in the lock body shell 1. The clutch pin stopper 13 can be tightly pressed against the end of the clutch pin 5 facing away from the handle reversing head 3. The clutch pin stopper 13 is provided with an inclined slide groove 14 with an angle to the horizontal direction. The anti-theft dial button 7 can be slidably installed on the surface of the lock body shell 1 in the horizontal direction. A protrusion 15 is fixedly provided on the anti-theft dial button 7. The protrusion 15 can be slidably arranged in the inclined slide groove 14 of the clutch pin stopper 13. The anti-theft dial button 7 can slide in the inclined slide groove 14 of the clutch pin stopper 13 through the protrusion 15 on it by sliding horizontally, so as to drive the clutch pin stopper 13 to slide up and down, so as to push the clutch pin 5 which is slidably arranged in the vertical direction, and then realize the connection between the clutch pin 5 and the clutch slot 6. The anti-theft dial button 7 slides in the horizontal direction and will not be affected by gravity and will not be separated from the anti-cat-eye opening safety position.

[0031] A first limiting groove 16 and a second limiting groove 17 are provided on the inner side wall of the lock body shell 1 along the sliding direction of the anti-theft dial button 7, and an elastic limiting member is installed on the side wall of the anti-theft dial button 7. The elastic limiting member can be elastically deformed along the depth direction of the first limiting groove 16 and the second limiting groove 17. The elastic limiting member can slide with the anti-theft dial button 7 and be stuck in the first limiting groove 16 or the second limiting groove 17. By elastically plugging the elastic limiting piece on the side wall of the anti-theft dial button 7 with the first limiting groove 16 and the second limiting groove 17 on the inner wall of the lock body shell 1, the anti-theft dial button 7 can be stably positioned in the anti-theft state and the anti-theft closed state to prevent the anti-theft dial button 7 from being misoperated by external force. In addition, positioning groove structures can be distributed at both ends of the inclined slide groove 14 of the clutch pin block 13, and the boss 15 on the anti-theft dial button 7 can be accommodated in the positioning groove structure. Resistance providing devices are respectively formed at the openings of the positioning groove structure, and the resistance providing devices can provide the boss 15 on the anti-theft dial button 7 with a set resistance to prevent it from escaping from the positioning groove structure. This type of structure can position the anti-theft dial button 7 in two state positions to prevent misoperation. This type of structure is an equivalent replacement structure that can be easily thought of by technicians in this field after seeing this patent.

[0032] A limiting sleeve is provided on the side wall of the anti-theft dial button 7, and the elastic limiting member is a limiting spring 18 and a steel ball 19 inserted in the limiting sleeve. The two ends of the limiting spring 18 are respectively pressed against the inner bottom surface of one end of the limiting sleeve and the surface of the steel ball 19. The steel ball 19 can be slidably arranged in the limiting sleeve, and the other end of the limiting sleeve is formed with an opening smaller than the diameter of the steel ball 19. The steel ball 19 can be inserted into the first limiting groove 16 and the second limiting groove 17 through the limiting sleeve opening to expose the outer part of the other end of the limiting sleeve. The spherical surface of the steel ball 19 contacts the side walls of the first limiting groove 16 and the second limiting groove 17 and can automatically withdraw after receiving the toggle force to prevent jamming. The first limiting groove 16 and the second limiting groove 17 are preferably spherical grooves matched therewith. In addition to the structure of the spring and the steel ball 19, the elastic limiting member can also be a spring and a sliding pin, or a spring sheet, which are all equivalent replacement structures that can be easily thought of by those skilled in the art after seeing this patent.

[0033] The lock body shell 1 is provided with a long strip opening for the operating part 22 of the anti-theft dial button 7 to extend out, and the anti-theft dial button 7 is also provided with a first coloring area 20 and a second coloring area 21, the first coloring area 20 and the second coloring area 21 are different in color, and the first coloring area 20 and the second coloring area 21 are respectively located on both sides of the operating part 22, and the first coloring area 20 and the second coloring area 21 can be alternately exposed opposite to the long strip opening of the lock body shell 1 as the anti-theft dial button 7 slides. By exposing two different coloring areas at the long strip opening position of the lock body shell 1, it is convenient for users to understand the current state of the door lock.

[0034] A return elastic member 23 and a return stop block 24 are further provided. The return stop block 24 is eccentrically and fixedly connected to the handle reversing head 3. The two return elastic members 23 are respectively located on both sides of the return stop block 24 along its rotation direction. One end of the return elastic member 23 is fixedly connected to the inner side wall of the lock body housing 1, and the other end of the return elastic member 23 respectively abuts against both side walls of the return stop block 24 along its rotation direction. Under the action of the elastic forces of the return elastic members 23 on both sides of the return stop block 24 along its rotation direction, the handle reversing head 3 is driven to automatically center, so that after the handle is released, the clutch slot 6 thereon is automatically aligned with the clutch pin 5, avoiding misalignment between the two and preventing the anti-peeping unlocking from starting.

[0035] A spring pressing block 25 is further provided. The spring pressing block 25 is fixedly installed on the handle head 2 inside the lock body housing 1. An arc-shaped slideway 26 is formed on the spring pressing block 25. The return elastic member 23 and the return stop block 24 are respectively arranged in the arc-shaped slideway 26 of the spring pressing block 25. The spring pressing block 25 is used for limiting, compressing and deforming, and sliding guiding the spring and the spring pressing block 25 to avoid jamming.

Claims

1. An anti-peeping opening structure for an intelligent lock, comprising a lock body housing (1), a handle head (2), a handle reversing head (3) and an inner handle (4). The handle head is rotatably installed inside the lock body housing. The inner handle extends into the interior of the lock body housing from the outside of the indoor side of the lock body housing and is coaxially fixed to the handle head. The handle reversing head is rotatably installed inside the lock body housing, and it is characterized in that: The handle reversing head and the handle head are coaxially aligned and can rotate relative to each other. A clutch pin (5) is installed on the handle head or the handle reversing head and can slide a set distance. An eccentric clutch slot (6) is provided on the handle reversing head or the handle head. An anti-theft dial (7) is also slidably installed on the lock body housing. The operating part of the anti-theft dial extends out of the surface of the lock body housing facing the indoor side. The movement of the anti-theft dial can drive the clutch pin to slide so that it can be inserted into or withdrawn from the clutch slot. A return elastic member (23) and a return stop block (24) are also provided. The return stop block is eccentrically fixed to the handle reversing head. The two return elastic members are respectively located on both sides of the return stop block along its rotation direction. One end of the return elastic member is fixed to the inner side wall of the lock body housing, and the other end of the return elastic member respectively abuts against both side walls of the return stop block along its rotation direction. Under the action of the elastic force of the return elastic members on both sides of the return stop block in its rotation direction, the handle reversing head is driven to automatically center.

2. The anti-peeping opening structure of the intelligent lock according to claim 1, characterized in that: A clutch elastic member (9) is also provided on the handle head. The clutch elastic member provides an elastic restoring force for the clutch pin to keep it disengaged from the clutch slot on the handle reversing head.

3. The anti-peeping opening structure of the intelligent lock according to claim 2, characterized in that: A T-shaped clutch pin slideway (10) is also provided inside the handle head. The clutch pin can be slidably inserted into the clutch pin slideway. The end with a smaller diameter of the clutch pin slideway can be aligned with the opening of the clutch slot on the handle head. The clutch elastic member is sleeved outside the clutch pin. A circumferential radial convex retaining ring (11) is formed on the outer circumferential surface of the clutch pin. Both sides of the clutch elastic member respectively abut against the radial convex retaining ring on the clutch pin and the step surface of the clutch pin slideway. An annular clutch pin sealing door (12) is fixedly installed on the opening of the end with a larger diameter of the clutch pin where the clutch pin can slide. The clutch pin can be slidably inserted into the inner hole of the clutch pin sealing door. The radial convex retaining ring on the clutch pin abuts against the surface of the clutch pin sealing door on the side away from the clutch elastic member.

4. The anti-peeping opening structure of the intelligent lock according to claim 3, characterized in that: The handle reversing head is coaxially inserted into the handle head. The clutch slot is located on the outer circumferential side wall of the handle reversing head. The two clutch slots are symmetrically arranged on two opposite sides of the handle reversing head. The two clutch pins can be respectively installed in the handle head and can slide radially. The two clutch pins are respectively aligned with the clutch slots on two opposite side walls of the handle reversing head.

5. The anti-peeping opening structure of the intelligent lock according to claim 1 or 4, characterized in that: One end of the clutch pin facing away from the handle reversing head can extend out of the outside of the handle head by a set distance. A clutch pin stop block (13) is also slidably provided in the lock body housing. The clutch pin stop block can abut against one end of the clutch pin facing away from the handle reversing head. An inclined chute (14) with an angle to the horizontal direction is provided on the clutch pin stop block. The anti-theft dial can be slidably installed on the surface of the lock body housing along the horizontal direction. A convex column (15) is fixedly provided on the anti-theft dial. The convex column can be slidably arranged in the inclined chute of the clutch pin stop block.

6. The anti-peeping opening structure of the intelligent lock according to claim 5, characterized in that: A first limit groove (16) and a second limit groove (17) are provided on the inner side wall of the lock body housing at intervals along the sliding direction of the anti-theft dial. An elastic limit member is installed on the side wall of the anti-theft dial. The elastic limit member can elastically deform along the depth direction of the first limit groove and the second limit groove. The elastic limit member can be snapped into the first limit groove or the second limit groove as the anti-theft dial slides.

7. The anti-peeping opening structure of the intelligent lock according to claim 6, characterized in that: A limiting sleeve is provided on the side wall of the anti-theft knob. The elastic limiting member is a limiting spring (18) and a steel ball (19) inserted into the limiting sleeve. The two ends of the limiting spring respectively abut against the inner bottom surface of one end of the limiting sleeve and the surface of the steel ball. The steel ball is slidably arranged in the limiting sleeve. An opening smaller than the diameter of the steel ball is formed at the other end of the limiting sleeve. The part of the steel ball exposed outside the other end of the limiting sleeve through the opening of the limiting sleeve can be inserted into the first limiting groove and the second limiting groove.

8. The anti-peeping opening structure of the intelligent lock according to claim 5, characterized in that: A long strip-shaped opening for the operation part of the anti-theft knob to extend out is provided on the lock body housing. The anti-theft knob is further provided with a first coloring area (20) and a second coloring area (21). The colors of the first coloring area and the second coloring area are different, and the first coloring area and the second coloring area are respectively located on both sides of the operation part (22). The first coloring area and the second coloring area can slide with the anti-theft knob and alternately face the long strip-shaped opening of the lock body housing and be exposed.

9. The anti-peeping opening structure of the intelligent lock according to claim 1, characterized in that: A spring pressing block (25) is further provided. The spring pressing block is fixedly installed on the handle head in the lock body housing. An arc-shaped slideway (26) is formed on the spring pressing block. The return elastic member and the return stop block are respectively arranged in the arc-shaped slideway of the spring pressing block.

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