Door and window locking device

Abstract

The utility model discloses a door and window locking device which comprises a lock box, a shaft seat, a rotating shaft, an inserting rod, a rotating limiting mechanism, an axial limiting plate, a gear and a rack, the gear and the rack are meshed with each other, the rear end of the rotating shaft is supported and installed through a straight hole in the shaft seat, the rotating limiting mechanism comprises a lock plate, a pawl and the gear serving as a ratchet wheel at the same time, and the axial limiting plate is installed on the lock plate. The gear is fixedly installed on the rotating shaft and axially limited by the axial limiting plate and the shaft seat, the top end of the inserting rod penetrates out of inserting rod through holes in the upper side and the lower side of the lock box, the rear end of the inserting rod is connected with the rack through a connecting block, and the rack is movably supported and guided by supporting and guiding mechanisms on the left side and the right side of an inner cavity of the lock box. The pawl is supported and mounted by the lock plate, and the lock plate is provided with a jacking block and a spring for driving the pawl to swing, so that the pawl is matched with and separated from the ratchet wheel. By arranging the axial limiting plate, the axial limiting plate of the rotating shaft with the gear is achieved, axial limiting on the shaft seat is not needed, and installation operation is easy and convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of door and window sealing assistance and anti-opening, and particularly relates to a door and window locking device. Background Art

[0002] The utility model patent with the patent application number of 202222069779.5 discloses a door and window locking device installed on doors and windows for anti-opening and auxiliary sealing. The device is provided with inclined locking tongues at the front sections of two inserting rods. The axial movement of the inserting rods drives the locking tongues to be pressed and mated 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 racks of the gear-rack mechanism and are driven to move by the gear-rack mechanism. One end of the rotating shaft installing the gear is provided with a wrench connecting mechanism for pluggable connection with the wrench. The other end of the rotating shaft is rotatably supported and installed on the shaft seat at the bottom of the inner cavity of the lock box through an axial limiting mechanism. The rotation of the gear is driven by the swing of the wrench, driving the rack to drive the inserting rods to axially move. A ratchet and pawl mechanism is used to limit the rotation of the gear, so as to lock the locking tongue in the locked state position. The pawl is supported and installed by a lock plate. The ratchet is coaxially installed with the gear. The cooperation of the top support block sliding in the lock plate chute and the spring installed on the lock plate is used to drive the separation and locking of the pawl and the ratchet. The axial limiting mechanism of such a lock rotating shaft is located at the bottom of the lock box, which is inconvenient for installation and maintenance. When unlocking the ratchet, it is necessary to manually apply force to the top support block all the time, which is inconvenient to use. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the defects of inconvenient installation of the rotating shaft of the existing door and window locking device and inconvenient operation when unlocking and opening the door, and to provide a door and window locking device that is convenient for both installation and use.

[0004] To this end, the utility model adopts the following technical scheme: a door and window locking device, comprising a lock box, an axle seat, a rotating shaft, a plug rod and mutually meshing gears and racks, the axle seat being fixed to the bottom of the inner cavity of the lock box, a first axle hole being provided on the front side surface of the lock box, a rear end of the rotating shaft being supported and installed in the inner cavity of the lock box by the axle seat, a front end of the rotating shaft passing through the first axle hole, a gear being fixedly installed on the rotating shaft and being located in the inner cavity of the lock box, at least one of the upper and lower side surfaces of the lock box being provided with a plug rod through hole, at least one of the side portions on the left and right sides of the inner cavity of the lock box being provided with a supporting guide mechanism to form a movable supporting guide for the rack, the rack is fixedly connected to the rear end of the plug rod through a connecting block, the front end of the plug rod passes through the plug rod through hole and is connected to the inclined lock tongue, the gear rotation drives the rack to move linearly, thereby driving the plug rod to move linearly, driving the lock tongue at the end of the plug rod to mate or disengage with the lock groove on the door frame, characterized in that the axle seat is provided with a second axle The rear end of the pawl is supported and installed by the lock plate and can swing around the end as the center, and the front end of the pawl extends into the ratchet accommodating cavity and cooperates with the ratchet wheel. A spring mounting groove and a top support block mounting groove are provided on the lock plate, and the spring mounting groove and the top support block mounting groove are respectively arranged on both sides of the pawl. A spring is installed in the spring mounting groove to support the pawl to automatically contact with the ratchet wheel, and a top support block is installed in the top support block mounting groove through clearance fit, and the top support block slides in the top support block mounting groove to support the pawl to make it disengage from the ratchet wheel.

[0005] The axial limit plate is provided with a third axial hole, the axial limit plate is fixedly mounted on the lock plate, the front end of the rotating shaft passes through the third axial hole, the ratchet and the gear are located between the axial limit plate and the shaft seat, and the axial position of the ratchet and the gear is limited by the axial limit plate and the shaft seat;

[0006] A long groove-shaped top support block toggle piece through hole is provided on the front side of the lock box, and a top support block toggle piece is provided on the outside of the front side of the lock box. The top support block toggle piece passes through the top support block toggle piece through the through hole and is connected with the top support block. The top support block is driven to slide in the top support block mounting groove by the sliding of the top support block toggle piece to achieve the support or separation of the pawl.

[0007] As a supplement and improvement to the above solution, the utility model also includes the following features.

[0008] The rotation limiting mechanism further includes a top support block stopper installed on the rear side of the lock box, which is disposed on the front and rear sides of the lock box respectively with the axial limiting plate, guiding and limiting the movement of the top support block. The top support block actuator is a knob plunger, and a limiting hole is provided on the top support block stopper for the knob plunger to penetrate and cooperate with. The position of the limiting hole is such that the top support block can push the pawl away from the ratchet after the knob plunger is inserted. Pressing the knob plunger can insert the plunger into the limiting hole and maintain the inserted state to limit the position of the top support block. After the knob plunger is inserted into the limiting hole, no manual force needs to be applied again. Pressing the knob plunger again, the plunger can automatically pop out of the limiting hole, and the top support block can slide freely again.

[0009] The support and guiding mechanism is a chute provided on the side of the inner cavity of the lock box, and the rack is embedded in the chute for linear sliding movement. The chute is formed by fixing two stoppers on the side wall of the lock box, or the panel of the door or window using this door and window locking device can be used as the lock box body, and the internal baffle can be used as the stopper.

[0010] The ratchet and the gear are the same part, which is convenient for processing and manufacturing.

[0011] A return spring is sleeved on the plug rod, and a return spring limiting member is provided on the plug rod. One end of the return spring is limited by the connecting block, and the other end is limited by the return spring limiting member. When the plug rod extends forward, the spring deforms to form an elastic force, and when the pawl disengages from the ratchet, the spring elastic force provides the driving force for the plug rod to retract.

[0012] A connecting mechanism connected to the handle is provided at the top of the rotating shaft, and the handle drives the rotation of the rotating shaft by swinging around the rotating shaft.

[0013] The connecting mechanism includes a radial hole opened at the top of the rotating shaft and a pin shaft passing through the radial hole. The handle is hinged to the top 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 jack. The jack is opened at the top 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] The utility model is installed on the door leaf when in use. When the handle swings around the shaft, it drives the shaft to rotate. The shaft drives the gear and ratchet to rotate coaxially and simultaneously. The gear drives the rack to move, thereby driving the insertion rod to move. The insertion rod moves forward to make the lock tongue at its front end fit into the lock groove on the door frame. The insertion rod moves backward to make the lock tongue at its front end disengage from the lock groove on the door frame. The pawl contacts the ratchet (gear) to limit the rotation of the ratchet, thereby limiting the rotation of the gear, thereby limiting the position of the lock tongue. The position is limited by the spring supporting the ratchet and the gear to automatically cooperate and contact. The position is limited by the supporting block toggle member driving the supporting block to slide the supporting ratchet to disengage from the gear to release the position limitation. The locking and unlocking operations of the lock tongue do not require force throughout the entire process. The locking position of the lock tongue can be adjusted by the pawl being in contact with the gear at different angles.

[0016] The utility model can achieve the following beneficial effects: by setting a ratchet pawl mechanism that rotates coaxially with a gear rack mechanism that drives the insertion rod lock tongue to move, the rotation angle of the rotating shaft is controlled, so that the locking position of the lock tongue can be automatically adjusted, and the locking and unlocking operations do not require force throughout the entire process; by setting an axial limiting plate and an axle seat together to form an axial limiting mechanism of the gear, the axial position of the gear is limited, so that the axle seat only needs to be a straight shaft hole, and there is no need for axial limiting between the rotating shaft and the axle seat, the structure is simplified, the axle seat can be fixed by welding, the rotating shaft and the axle seat are easy to process and install, and the firmness of the axle seat can be improved, thereby reducing the manufacturing cost; by designing the top support block toggle piece as a knob plunger, the top support block limiting and limiting release operations are convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the utility model.

[0018] Figure 2 It is a right view of the utility model.

[0019] Figure 3 yes Figure 1 AA section view.

[0020] Figure 4 yes Figure 1 BB cross-sectional view.

[0021] Figure 5 yes Figure 1 CC cross-sectional view.

[0022] Figure 6 yes Figure 2 DD cross-sectional view.

[0023] Figure 7 yes Figure 2 EE cross-sectional view.

[0024] Figure 8 yes Figure 2F-F sectional view. Detailed implementation mode

[0025] The following combines the attached drawings to describe the detailed implementation mode of the present utility model in detail. The described embodiments are only illustrations and explanations of the present invention, and do not constitute the sole limitation of the present invention.

[0026] It should be noted that unless otherwise defined, the technical terms and scientific and technical terms used in the embodiments of the present utility model should have the general meaning understood by those of ordinary skill in the technical field to which the present utility model belongs. The "first", "second" and similar terms used in this disclosure do not represent any order, quantity or importance, but are only used to distinguish different components. Words 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 "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper, lower, left, right, front, back, top, bottom" are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0027] As Figures 1 to 8 shown, the present utility model is a door and window locking device, including a lock box 3, a shaft seat 8, a rotating shaft 4, a plug rod 1, an axial limiting plate 11, a rotation limiting mechanism, and meshing gears 7 and a rack 12. The shaft seat 8 is fixedly welded to the bottom of the inner cavity of the lock box. The shaft seat is provided with a second shaft hole, and the second shaft hole is a straight hole. The front side of the lock box is provided with a first shaft hole. The rear end of the rotating shaft 4 is inserted into the second shaft hole and supported by the shaft seat and installed in the inner cavity of the lock box. The front end of the rotating shaft passes through the first shaft hole. The gear 7 is circumferentially limited and fixedly installed on the rotating shaft 4 through a flat key 9. The left and right sides of the inner cavity of the lock box are provided with a chute-type support and guiding mechanism to form a moving support and guide for the rack. The chute is composed of two stoppers fixed on the side wall of the lock box. The rack 12 is embedded in the chute and makes a linear sliding movement. The upper and lower sides of the lock box are provided with plug rod through holes. The rear end of the plug rod 1 is fixedly connected to the rack 12 through a connecting block 6. The front end of the plug rod passes through the plug rod through hole and is connected to an inclined locking tongue (not shown in the figure). 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 into or disengaged from the lock groove on the door frame.

[0028] The rotation limiting mechanism includes a ratchet wheel, a pawl 16, a locking plate 10, and a top support block stopper 13. The ratchet wheel and the gear 7 are the same part. A ratchet wheel accommodating cavity is provided on the locking plate 10. The locking plate is fixedly installed on the stopper forming the chute by screws, so that the locking plate is fixedly arranged relative to the locking box. The locking plate is sleeved on the gear 7 through the outside of the ratchet wheel accommodating cavity. The rear end portion of the pawl is formed into a rotating shaft portion. An arc groove is provided on the locking plate to support and install the rotating shaft portion of the pawl, so that the pawl can swing with this end as the center. The front end portion of the pawl extends into the ratchet wheel accommodating cavity to cooperate with the gear 7. A spring installation groove and a top support block installation groove are provided on the locking plate. The spring installation groove and the top support block installation groove are respectively arranged on both sides of the pawl. A spring 14 is installed in the spring installation groove to support the pawl to automatically contact and cooperate with the gear. A top support block 15 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 wheel.

[0029] The axial limiting plate 11 is provided with a third shaft hole. The axial limiting plate is fixedly installed on the front side surface of the locking plate 10. The top support block stopper 13 is installed on the rear side surface of the locking box. The top support block stopper and the axial limiting plate guide and limit the movement of the top support block 15. The front end of the rotating shaft passes through the third shaft hole. The gear is located between the axial limiting plate 11 and the shaft seat 8. The axial positions of the ratchet wheel and the gear are limited by the axial limiting plate and the shaft seat.

[0030] A long groove-shaped top support block toggle part through hole is provided on the front side surface of the locking box. A top support block toggle part 5 is provided outside the front side surface of the locking box. The top support block toggle part 5 is a knob plunger. A threaded hole is provided on the top support block 15. The front end of the knob plunger passes through the top support block toggle part through hole and is screwed into the threaded hole to be connected to the top support block. The top support block is driven to slide in the top support block installation groove by the sliding of the top support block toggle part to realize the support or disengagement of the pawl. A limiting hole that is inserted and matched with the knob plunger is provided on the top support block stopper. The position of the limiting hole satisfies that the top support block can support the pawl to disengage from the ratchet wheel after the knob plunger is inserted.

[0031] A connection mechanism connected to the handle is provided at the top end of the rotating shaft 4. The connection mechanism is a plug-and-socket type polygonal plug and socket. The socket is provided at the top end of the rotating shaft. The head of the handle is bent to form the plug. The handle is driven to rotate by swinging around the rotating shaft as the center.

[0032] A return spring 2 is sleeved on the insertion rod 1. A return spring limiting part is provided on the insertion rod. One end of the return spring is limited by the connection block 6, and the other end is limited by the return spring limiting part.

[0033] As another implementation manner, the connection mechanism includes a radial hole provided 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.

[0034] The lock box body can be a specially designed box body, or it can be the panel of the door or window using this door and window locking device as the lock box body, and the internal baffle serves as a stop block to form the described chute.

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 fixed to the bottom of the inner cavity of the lock box. A first shaft hole is formed on the front side surface of the lock box. The rear end of the rotating shaft is supported and installed in the inner cavity of the lock box by the shaft seat. The front end of the rotating shaft passes through the first shaft hole. The gear is fixedly installed on the rotating shaft and is located in the inner cavity of the lock box. Plug rod through holes are provided on at least one of the upper and lower side surfaces of the lock box. At least one side portion 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 and the rear end of the plug rod are fixedly connected by a connecting block. The front end of the plug rod passes through the plug rod through hole and is connected to an inclined locking tongue. It is characterized in that: The second end of the pawl is supported by the locking plate and can be swung around the locking plate by the locking means, and the front end of the pawl extends into the ratchet accommodating cavity and cooperates with the ratchet wheel. The lock plate is provided with a spring mounting groove and a top support block mounting groove, and the spring mounting groove and the top support block mounting groove are respectively arranged on both sides of the pawl. A spring is installed in the spring mounting groove to support the pawl to automatically contact the ratchet. A top support block is installed in the top support block mounting groove through clearance fit, and the top support block slides in the top support block mounting groove to support the pawl to make it disengage from the ratchet wheel. The axial limit plate is provided with a third axial hole, the axial limit plate is fixedly mounted on the lock plate, the front end of the rotating shaft passes through the third axial hole, the ratchet and the gear are located between the axial limit plate and the shaft seat, and the axial position of the ratchet and the gear is limited by the axial limit plate and the shaft seat; A long groove-shaped top support block toggle piece through hole is provided on the front side of the lock box, and a top support block toggle piece is provided on the outside of the front side of the lock box. The top support block toggle piece passes through the top support block toggle piece through the through hole and is connected with the top support block. The top support block is driven to slide in the top support block mounting groove by the sliding of the top support block toggle piece to achieve the support or separation of the pawl.

2. The door and window locking device according to claim 1, characterized in that: The rotation limiting mechanism also includes a top support block stopper installed on the rear side of the lock box, and the axial limit plate is separately arranged on the front and rear sides of the lock box to guide the movement of the top support block. The top support block toggle member is a knob plunger, and a limiting hole is provided on the top support block stopper to intersect and cooperate with the knob plunger. The position of the limiting hole ensures that the top support block can support the pawl to disengage from the ratchet after the knob plunger is inserted.

3. The window and door locking device according to claim 1, characterized in that: The supporting and guiding 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 to perform linear sliding motion.

4. A door and window locking device according to claim 1, characterized in that: The ratchet and the gear are the same part.

5. A door and window locking device according to claim 1, characterized in that: A return spring is sleeved on the insertion rod, and a return spring limiter is arranged on the insertion rod. One end of the return spring is limited by the connecting block, and the other end is limited by the return spring limiter.

6. The window and door locking device according to claim 1, characterized in that: The top end of the rotating shaft is provided with a connection mechanism connected to a handle, and the rotating shaft is driven to rotate by swinging the handle around the rotating shaft.

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

8. The door and window locking device according to claim 6, characterized in that: The connecting mechanism comprises a polygonal plug and a socket which are pluggable and matched with each other. The socket is arranged at the top of the rotating shaft, and the plug is formed by bending at the head of the handle.

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