A door and window locking device

Abstract

The present invention discloses a door and window locking device, which includes a lock box, a shaft seat, a rotating shaft, a plug rod, a ratchet and pawl mechanism, and meshing gears and racks. The rear end of the rotating shaft is supported and installed in the inner cavity of the lock box by the shaft seat, and the front end of the rotating shaft passes through the shaft hole on the front side of the lock box. The gear and the ratchet are fixedly installed on the rotating shaft. The top end of the plug rod passes through the shaft holes on the upper and lower sides of the lock box, and the rear end is connected to the rack. The rack is movably supported and guided by the support and guiding mechanisms on the left and right sides of the inner cavity of the lock box. The pawl is supported and installed by a lock plate. The lock plate is provided with a spring installation groove and a top support block installation groove respectively arranged on both sides of the pawl. A spring is installed in the spring installation groove to support the pawl to automatically contact the ratchet, and a top support block is installed in the top support block installation groove through a clearance fit to support the pawl to disengage from the ratchet; the rotation angle of the rotating shaft is controlled by the ratchet and pawl mechanism, realizing that the locking position of the lock tongue is automatically adjustable, and the locking and unlocking operations do not require force throughout the whole process.

Description

Technical Field

[0001] The present invention belongs to the technical field of door and window airtight assistance and anti-opening technology, and in particular relates to a door and window locking device. Background Art

[0002] The utility model patent with the patent number 201521012820.9 discloses a door lock device installed on doors and windows for anti-opening and auxiliary sealing. The door lock device is provided with inclined locking tongues at the front ends of two inserting rods. The locking tongues are driven by the axial movement of the inserting rods to be squeezed and paired with the airtight locking grooves on the door frame, applying a pressure perpendicular to the door surface to the door, so that the door is tightly pressed against the door frame. The inserting rods are connected to the rack of the gear-rack mechanism and are driven to move by the gear-rack mechanism. The rotating shaft of the installed gear is connected to a handle and the gear is rotated by the swinging of the handle. The limiting block protruding from the top surface of the lock box and the limiting groove provided on the handle are correspondingly matched to form a handle limiting and locking mechanism to limit the position of the handle, thereby locking the position where the locking tongue is in the locked state. For such a lock, the entire process of locking and unlocking requires forcefully pulling the handle. When the handle is paired with the limiting block, it is necessary to master the force size well to smoothly insert the limiting block and the limiting groove in place, which is inconvenient to operate and consumes a large amount of force. Moreover, the limiting angle of the handle is fixed, so the locking position of the locking tongue cannot be adjusted, making it impossible to adjust the locking force at the locking position where the locking tongue is squeezed and paired with the door frame, and unable to adapt to the use changes of doors and windows. The limiting block also bears a large bending force and is easily damaged. Summary of the Invention

[0003] The purpose of the present invention is to overcome the defects that the locking position of the locking tongue of the existing door lock cannot be adjusted and the entire process of locking and unlocking requires forcefully pulling the handle, and to provide a door and window locking device with an adjustable locking position of the locking tongue and without the need to apply force throughout the entire process of locking and unlocking.

[0004] To this end, the present invention adopts the following technical solution: A door and window locking device includes a lock box, a shaft seat, a rotating shaft, a plug rod, and meshing gears and racks. The shaft seat is installed in the inner cavity of the lock box. A shaft hole is provided on the front side of the lock box. The rotating shaft is installed in the inner cavity of the lock box with the support and limitation of the shaft seat. The top end of the rotating shaft passes through the shaft hole. The gear is fixedly installed on the rotating shaft and is located in the inner cavity of the lock box. At least one of the upper and lower side surfaces of the lock box is provided with a plug rod through hole. At least one of the left and right side parts of the inner cavity of the lock box is provided with a support and guiding mechanism to form a moving support and guidance for the rack. The rack is connected to the rear end of the plug rod. The front end of the plug rod passes through the plug rod through hole and is connected to an inclined locking tongue. By rotating the gear to drive the linear movement of the rack, the linear movement of the plug rod is driven, and the locking tongue at the end of the plug rod is inserted or disengaged from the lock groove on the door frame. Its characteristic is that the door and window locking device further includes a ratchet and pawl mechanism. The ratchet is fixedly installed on the rotating shaft and rotates coaxially with the gear. The pawl is supported and installed by a lock plate. The lock plate is provided with a spring installation groove and a top support block installation groove. The spring installation groove and the top support block installation groove are respectively arranged on both sides of the pawl. A spring is installed in the spring installation groove to support and push the pawl to automatically contact the ratchet. A top support block is installed in the top support block installation groove through clearance fit. The top support block slides in the top support block installation groove to support the pawl to disengage from the ratchet. A long groove-shaped top support block toggling part through hole is provided on the front side of the lock box. A top support block toggling part is provided outside the front side of the lock box. The top support block toggling part passes through the top support block toggling part through hole and is fixedly connected to the top support block. By sliding the top support block toggling part, the top support block slides in the top support block installation groove to realize the support or disengagement of the pawl.

[0005] As a supplement and improvement to the above solution, the present invention further includes the following features.

[0006] The support and guiding mechanism is a chute provided on the side part of the inner cavity of the lock box, and the rack is embedded in the chute to perform a linear sliding movement.

[0007] A top support block toggling part limiting mechanism is installed on the lock box. A top support block toggling part mating structure is provided on the top support block toggling part to cooperate with the top support block toggling part limiting mechanism correspondingly to limit the top support block toggling part.

[0008] The top support block toggling part limiting mechanism is a password lock, and the top support block toggling part mating structure is a lock tongue jack for mating with the lock tongue of the password lock. By inserting the lock tongue of the password lock into the lock tongue jack, the position of the top support block toggling part can be limited.

[0009] The password lock is a fingerprint password lock, a dial password lock, or a digital button password lock.

[0010] A return spring is sleeved on the insertion rod, and a return spring limiting member is arranged on the lock box. One end of the return spring is relatively fixed to the insertion rod, and the other end is limited by the return spring limiting member. When the insertion rod moves forward, the spring deforms to form an elastic force, and when the ratchet pawl disengages from the ratchet wheel, the spring elastic force provides the driving force for the insertion rod to retract.

[0011] Further, the return spring limiting member includes a spring sleeve. One end of the spring sleeve is open and fixedly connected to the lock box, and the other end is covered with a cover plate. A through hole is provided on the cover plate for the insertion rod to pass through. The return spring is accommodated in the spring sleeve, and one end of the spring abuts against the cover plate to achieve limitation.

[0012] The top end of the rotating shaft is connected to a handle through a connecting mechanism, and the handle swings around the rotating shaft to drive the rotating shaft to rotate.

[0013] The connecting mechanism includes a radial hole opened at the top end of the rotating shaft and a pin shaft passing through the radial hole. The handle is hinged to the top end of the rotating shaft through the pin shaft, so that the angle between the handle and the rotating shaft can be adjusted when the handle swings around the pin shaft.

[0014] The connecting mechanism can also be a pluggable and mating polygonal plug and socket. The socket is opened at the top end of the rotating shaft, and the head of the handle is bent to form the plug. The handle can be removed when the lock does not need to be operated through the pluggable handle structure.

[0015] When in use, the present invention is installed on the door leaf. When the handle swings around the rotating shaft, it will drive the rotating shaft to rotate. The rotating shaft drives the gear and the ratchet wheel to rotate coaxially at the same time. The gear drives the rack to move, thereby driving the insertion rod to move. When the insertion rod moves forward, the lock tongue at its front end is inserted into the lock groove on the door frame. When the insertion rod retracts, the lock tongue at its front end disengages from the lock groove on the door frame. The ratchet pawl contacts the ratchet wheel to limit the rotation of the ratchet wheel, which limits the rotation of the gear, so that the position of the lock tongue can be limited. The position is limited by the spring pushing the ratchet pawl to automatically contact the ratchet wheel. The position limitation is released by the top support block driving member driving the top support block to slide and push the ratchet pawl away from the ratchet wheel, realizing the locking and unlocking operations of the lock tongue without the need to exert force throughout the whole process. By the ratchet pawl being in different contact positions with the ratchet wheel, the locking position of the lock tongue can be adjusted.

[0016] The present invention can achieve the following beneficial effects: By setting a ratchet and pawl mechanism that rotates coaxially with the gear and rack mechanism for driving the movement of the lock tongue of the insertion rod to control the rotation angle of the rotating shaft, the automatic adjustment of the locking position of the lock tongue is realized, and the locking and unlocking operations do not require force throughout the whole process; By setting a password lock to limit the position of the top support block that moves the ratchet pawl, the opening and closing of the lock can be controlled, improving the anti-theft performance of the locking device. Description of the Drawings

[0017] Figure 1It is the front view of an embodiment of the present invention.

[0018] Figure 2 It is the right view of an embodiment of the present invention.

[0019] Figure 3 It is Figure 1 the A-A cross-sectional view of

[0020] Figure 4 It is Figure 1 the B-B cross-sectional view of

[0021] Figure 5 It is Figure 2 the C-C cross-sectional view of

[0022] Figure 6 It is Figure 2 the D-D cross-sectional view of

[0023] Figure 7 It is the front view of another embodiment of the present invention.

[0024] Figure 8 It is the right view of another embodiment of the present invention.

[0025] Figure 9 It is Figure 7 the E-E cross-sectional view of Detailed Embodiment

[0026] The following describes in detail the specific embodiments of the present invention with reference to the accompanying drawings. The described embodiments are only illustrative and explanatory of the present invention and do not constitute the sole limitation of the present invention.

[0027] It should be noted that unless otherwise defined, the technical terms and scientific and technical terms used in the embodiments of the present invention should have the ordinary meaning understood by those of ordinary skill in the technical field to which the present invention belongs. The "first", "second" and similar terms used in this disclosure do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or components appearing before this word cover the elements or components listed after this word and their equivalents, without excluding other elements or components. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "up, down, left, right, front, back, top, bottom" are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0028] As Figures 1 to 6As shown in the figure, the present invention is a door and window locking device, which includes a lock box 1, a shaft seat 11, a rotating shaft 7, a plug rod 4, a ratchet and pawl mechanism, and meshing gears 12 and a rack 10. The shaft seat 11 is fixedly installed on the rear wall of the inner cavity of the lock box. A shaft hole is provided on the front side of the lock box 1. The bottom end of the rotating shaft 7 is limited and supported by the shaft seat 11 and installed in the inner cavity of the lock box. The top end of the rotating shaft 7 passes through the shaft hole. The gear 12 is fixedly installed on the rotating shaft 7 and is located in the inner cavity of the lock box. Plug rod through holes are provided on both the upper and lower side surfaces of the lock box 1. Chute grooves serving as support and guiding mechanisms are provided on both the left and right side parts of the inner cavity of the lock box. A rack 10 is embedded in each slot, and the chute grooves form moving support and guiding for the rack 10. One end of the rack 10 is bent, and a threaded hole is formed at the bent head. The rear end of the plug rod 4 is provided with an external thread, and the rear end of the plug rod is threadedly connected and fixed to the threaded hole. The front end of the plug rod 4 passes through the plug rod through hole, and a bevel lock tongue is connected to the front end of the plug rod. By driving the rotation of the gear to drive the linear movement of the rack, the linear movement of the plug rod is driven, and the lock tongue at the end of the plug rod is inserted into or disengaged from the lock groove on the door frame. The ratchet 8 of the ratchet and pawl mechanism is fixedly installed on the rotating shaft 7 and rotates coaxially with the gear 12. A lock plate 9 is installed on the lock box 1. The lock plate 9 is sleeved on the ratchet 8 through a ratchet cavity opened on it. A pawl cavity is provided on the lock plate 9 on the side of the ratchet cavity and communicating with the ratchet cavity. One end of the pawl 15 is a cylindrical installation part, and the other end is a pawl part. A cylindrical hole is provided on the lock plate 9 for mating with the installation part of the pawl. The pawl is supported and installed through the mating of the cylindrical hole and the installation part of the pawl, so that the pawl can swing in the pawl cavity.

[0029] A spring installation groove and a top support block installation groove are provided on the lock plate 9. The spring installation groove and the top support block installation groove are respectively arranged on both sides of the pawl cavity. A spring 16 is installed in the spring installation groove to top support the pawl 15 to automatically contact the ratchet teeth of the ratchet 8. A top support block 14 is installed in the top support block installation groove through clearance fit. The top support block slides in the top support block installation groove to top support the pawl to disengage it from the ratchet. A long groove-shaped top support block toggle part through hole is provided on the front side of the lock box 1. A top support block toggle part 5 is provided outside the front side of the lock box. The top support block toggle part 5 passes through the top support block toggle part through hole and is fixedly connected to the top support block 14. By manually driving the sliding of the top support block toggle part, the sliding of the top support block in the top support block installation groove is driven to realize the top support or disengagement of the pawl.

[0030] A return spring 13 is sleeved on the plug rod 4. The side of the lock box 1 provided with the plug rod through hole is connected with a spring sleeve 3 serving as a return spring limiting part. One end of the spring sleeve 3 is open and fixedly connected to the lock box 1, and the other end is covered with a cover plate. A through hole is provided on the cover plate for the plug rod to pass through. One end of the return spring 13 abuts against the bent head of the rack 10 and is relatively fixed to the plug rod 4, and the other end abuts against the cover plate of the spring sleeve 3 and is limited by the cover plate. When the plug rod extends forward, the spring deforms to form an elastic force, and when the pawl disengages from the ratchet, the elastic force of the spring provides the driving force for the plug rod to retract.

[0031] The top end of the rotating shaft is connected to a handle 2 through a connecting mechanism, and the handle is used to drive the rotation of the rotating shaft by swinging around the rotating shaft as the center. The connecting mechanism includes a radial hole opened at the top end of the rotating shaft and a pin shaft passing through the radial hole. The handle is hinged to the top end of the rotating shaft through the pin shaft, so that the angle between the handle and the rotating shaft can be adjusted when the handle swings around the pin shaft as the center.

[0032] The connecting mechanism can also be a pluggable and mating polygonal plug and socket. The socket is opened at the top end of the rotating shaft, and the head of the handle is bent to form the plug. The handle can be removed without operating the lock through the pluggable handle structure.

[0033] A fingerprint recognition type digital keypad lock 6 serving as a limiting mechanism for the top support block toggling member is installed on the lock box 1. A lock tongue through hole is provided on the top support block toggling member 5 as a mating structure of the top support block toggling member to cooperate with the lock tongue of the password lock. After the lock tongue is inserted into the lock tongue through hole, the top support block toggling member is limited.

[0034] As Figures 7 to 9 shown, as another implementation manner, the password lock 6 in the above implementation manner can also be a dial type password lock.

Claims

1. A door and window locking device, comprising a lock box, a shaft seat, a rotating shaft, a plug rod, and meshing gears and racks. The shaft seat is installed in the inner cavity of the lock box. A shaft hole is provided on the front side of the lock box. The rotating shaft is installed in the inner cavity of the lock box with the limit support of the shaft seat. The top end of the rotating shaft passes through the shaft hole. The gear is fixedly installed on the rotating shaft and is located in the inner cavity of the lock box. At least one of the upper and lower side surfaces of the lock box is provided with a plug rod through hole. At least one side part on the left and right sides of the inner cavity of the lock box is provided with a support and guiding mechanism to form a moving support and guide for the rack. The rack is connected to the rear end of the plug rod. The front end of the plug rod passes through the plug rod through hole and is connected to an inclined locking tongue, and is characterized in that: The door and window locking device also includes a ratchet pawl mechanism, the ratchet is fixedly mounted on the rotating shaft and rotates coaxially with the gear, the pawl is supported and mounted by a lock plate, a spring mounting slot and a top support block mounting slot are provided on the lock plate, the spring mounting slot and the top support block mounting slot are respectively arranged on both sides of the pawl, a spring is installed in the spring mounting slot to support the pawl and automatically contact the ratchet, a top support block is installed in the top support block mounting slot through clearance fit, the top support block slides in the top support block mounting slot to support the pawl and disengage it from contact with the ratchet; a long slot-shaped top support block toggle through hole is provided on the front side of the lock box, a top support block toggle is provided on the outside of the front side of the lock box, and the top support block toggle passes through the The through hole of the top support block toggle piece is fixedly connected to the top support block, and the top support block is driven to slide in the top support block mounting groove by sliding of the top support block to achieve the support or disengagement of the pawl; a return spring is mounted on the insertion rod, and a return spring limiter is provided on the lock box, one end of the return spring is fixed relatively to the insertion rod, and the other end is limited by the return spring limiter; the support and guide mechanism is a slide groove arranged on the side of the inner cavity of the lock box, and the rack is embedded in the slide groove for linear sliding movement; a top support block toggle piece limiting mechanism is installed on the lock box, and a top support block toggle piece matching structure is provided on the top support block toggle piece to correspond to the top support block toggle piece limiting mechanism.

2. The door and window locking device according to claim 1, wherein: The reset spring limiter includes a spring sleeve, one end of which is open and fixedly connected to the lock box, and the other end is covered with a cover plate, a through hole is opened on the cover plate for the insertion rod to pass through, and the reset spring is accommodated in the spring sleeve, and one end of the spring is against the cover plate.

3. The door and window locking device according to claim 2, characterized in that: The limiting mechanism of the supporting block toggle member is a password lock, and the matching structure of the supporting block toggle member is a lock tongue jack that matches the lock tongue of the password lock.

4. The window and door locking device according to claim 3, characterized in that: The password lock is a fingerprint password lock, a dial password lock or a digital button password lock.

5. The window and door locking device according to claim 3, characterized in that: The top end of the rotating shaft is connected to a handle through a connecting mechanism.

6. The window and door locking device according to claim 5, characterized in that: The connecting mechanism comprises a radial hole opened at the top end of the rotating shaft and a pin rotating in the radial hole, and the handle is hinged to the top end of the rotating shaft through the pin.

7. A door and window locking device according to claim 5, characterized in that: The connecting mechanism comprises a polygonal plug and a socket that are pluggable and matched. The socket is provided at the top end of the rotating shaft, and the plug is formed on the handle head by bending.

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