Push-to-unlock mechanism

Abstract

This invention discloses a push-to-unlock mechanism, including an inner door lock cover and a square strip base. The square strip base is rotatably mounted on the inner side of the inner door lock cover. The forward and reverse rotation of the square strip base enables the door lock's square latch and oblique latch to extend and retract, locking or unlocking the door. It also includes an inner handle, an opening lever, a central swing arm, and a transmission mechanism. The central swing arm is mounted on the inner door lock cover and can swing around a fulcrum on the inner door lock cover. The inner handle is fixedly mounted on the outer surface of the inner door lock cover. The opening lever is slidably mounted on the inner handle, with one end of the opening lever protruding from the outer side of the inner handle. The other end of the opening lever can drive one end of the central swing arm to swing back and forth. The other end of the central swing arm can drive the square strip base to rotate back and forth through the transmission mechanism. This invention has a simple structure, is convenient for opening doors, and saves effort.

Description

Technical Field

[0001] This invention relates to a smart door lock, and more particularly to a push-to-unlock mechanism. Background Technology

[0002] Conventional smart door locks unlock by turning the door handle, which is inconvenient and requires effort, especially when holding items in your hands. Summary of the Invention

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[0004] In order to overcome the above defects, the present invention provides a pressing unlocking mechanism, which can start the door lock by pressing, is convenient to use and saves effort.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a pressing unlocking mechanism, including an inner cover plate of the door lock and a square bar seat, the square bar seat is rotatably installed on the inner side of the inner cover plate of the door lock, the forward and reverse rotation of the square bar seat can realize the telescopic locking or unlocking of the square tongue and the diagonal tongue of the door lock, and further includes an inner handle, an opening rod, a central swing arm and a transmission mechanism. The central swing arm is swingably installed on the inner cover plate of the door lock around a fulcrum on the inner cover plate of the door lock. The inner handle is fixedly installed on the outer surface of the inner cover plate of the door lock. The opening rod is slidably installed on the inner handle. One end of the opening rod can expose the outer side of the inner handle, and the other end of the opening rod can drive one end of the central swing arm to swing reciprocally. The other end of the central swing arm can drive the square bar seat to rotate reciprocally through the transmission mechanism.

[0006] As a further improvement of the present invention, the transmission mechanism includes a gear and a rack. The gear is coaxially connected to the square rack seat, and the rack is mounted on the inner side wall of the inner cover plate of the door lock, which can slide back and forth along a straight line. The gear and the rack mesh and drive each other. The other end of the central swing arm swings back and forth, which can move the rack to slide back and forth.

[0007] As a further improvement of the present invention, the transmission mechanism also includes a slider, which is fixedly installed on one end of the rack and is hinged to the other end of the central rocker arm, which can slide along the direction perpendicular to the slider.

[0008] As a further improvement of the present invention, the inner cover plate of the door lock is provided with a through hole that connects the inner and outer sides, the central swing arm is inserted into the through hole, and there is a set gap between the outer circumferential side of the central swing arm and the inner sidewall of the through hole.

[0009] As a further improvement of the present invention, the central swing arm is located on the two opposite side walls of one end of the inner side of the door lock inner cover plate, forming radially protruding baffles. Two pressure blocks are fixedly installed on the inner side wall of the door lock inner cover plate, and the pressure blocks and the inner side wall of the door lock inner cover plate form a space for the two protruding baffles on the central swing arm to be inserted.

[0010] As a further improvement of the present invention, a transmission rod is also provided. One end of the transmission rod is fixedly installed on the opening rod, and the other end of the transmission rod is tightly pressed against one side wall of the central swing arm along its swing unlocking direction by means of line-to-line contact.

[0011] As a further improvement of the present invention, the distance from the contact point between the central swing arm and the transmission rod to its rotation fulcrum is different from the distance from the contact point between the central swing arm and the transmission mechanism to its rotation fulcrum.

[0012] As a further improvement of the present invention, a reset elastic element is also provided. The reset elastic element is installed on the inner handle and provides the opening rod with an elastic retaining force to keep it from being pressed against the central elastic arm.

[0013] As a further improvement of the present invention, the inner handle includes a handle body and a handle cover. The handle body has a slide rail for the opening rod to slide on, and a limiting post is also provided on the slide rail. The opening rod can be slidably inserted into the slide rail of the handle body. The opening rod has an elongated hole extending along its sliding direction. The limiting post can be slidably inserted into the elongated hole on the opening rod. The handle cover covers the surface of the handle body. The opening rod is clamped between the handle body and the handle cover. The handle cover is provided with a connecting screw, which is screwed to the limiting post on the handle body.

[0014] As a further improvement of the present invention, the pressing part of the opening rod exposed outside the inner handle forms an arc-shaped surface.

[0015] The beneficial effects of this invention are as follows: By pressing the opening rod, the opening rod slides on the inner handle to press against the rotation of the central swing arm. The rotation of the central swing arm realizes the rotation of the square bar seat to unlock through the gear and rack meshing transmission mechanism. After releasing the opening rod, under the elastic force of the reset elastic element, the opening rod automatically resets, and the latch of the door lock automatically extends out of the lock body to lock the door. This invention has a simple structure, is convenient to open, and saves effort. Attached Figure Description

[0016] Figure 1 This is a front view of the inner handle of the present invention;

[0017] Figure 2 This is a rear view of the inner handle of the present invention;

[0018] Figure 3 This is a cross-sectional view of the inner handle of the present invention;

[0019] Figure 4 This is a front view of the inner lining of the present invention;

[0020] Figure 5 This is a cross-sectional view illustrating the structural principle of the present invention;

[0021] Figure 6 Front view of the central swing arm;

[0022] Figure 7 This is an exploded view of the inner handle of the present invention. Detailed Implementation

[0023] Example: A push-to-unlock mechanism includes an inner door lock cover plate 6 and a square strip base 9. The square strip base is rotatably mounted on the inner side of the inner door lock cover plate. The forward and reverse rotation of the square strip base can realize the extension and retraction of the door lock's square tongue and oblique tongue to lock or unlock the door. It also includes an inner handle, an opening rod 1, a central swing arm 4, and a transmission mechanism. The central swing arm is mounted on the inner door lock cover plate and can swing around a fulcrum on the inner door lock cover plate. The inner handle is fixedly mounted on the outer surface of the inner door lock cover plate. The opening rod is slidably mounted on the inner handle. One end of the opening rod can protrude outside the inner handle. The other end of the opening rod can drive one end of the central swing arm to swing back and forth. The other end of the central swing arm can drive the square strip base to rotate back and forth through the transmission mechanism.

[0024] When the opening lever 1 is pressed, it will move along the inner handle and push the central swing arm 4 to rotate around the center. If the opening lever 1 moves downward by 10.5mm, it can push the central swing arm 4 to rotate 23°. The rotation of the other side of the swing arm 4 can then drive the square bar seat 9 to rotate through the transmission mechanism. The square bar seat can control the opening of the lock body and the bolt through the square bar. Therefore, after the square bar seat 9 rotates, the bolt retracts, and the lock is unlocked.

[0025] The transmission mechanism includes a gear and a rack 8. The gear is coaxially connected to the square bar seat, and the rack is mounted on the inner wall of the door lock inner cover plate, capable of reciprocating along a straight line. The gear and rack mesh and drive each other. The reciprocating swing of the other end of the central swing arm 4 can move the rack back and forth. The rotation of the other side of the swing arm 4 can also push the rack 8 to move. The rack 8 and the square bar seat 9 are connected by a gear. The movement of the rack 8 will drive the rotation of the square bar seat 9, and the square bar seat can control the opening of the lock body and the bolt through the square bar. Therefore, after the square bar seat 9 rotates, the bolt retracts, realizing unlocking.

[0026] The transmission mechanism also includes a slider 7, which is fixedly installed on one end of the rack and is hinged to the other end of the central rocker arm, allowing it to slide along the direction perpendicular to the slider.

[0027] The inner cover of the door lock has a through hole that connects the inner and outer sides. The central swing arm passes through the through hole, and there is a set gap between the outer circumference of the central swing arm and the inner sidewall of the through hole.

[0028] The central swing arm is located on two opposite sidewalls at one end of the inner side of the door lock's inner cover, forming radially protruding baffles. Two pressure blocks 5 are fixedly installed on the inner sidewall of the door lock's inner cover, forming a space between the pressure blocks and the inner sidewall of the door lock's inner cover for the two protruding baffles on the central swing arm to be inserted. The central swing arm 4 is fixed to the inner cover 6 by the two pressure blocks 5 and can rotate freely.

[0029] A transmission rod 2 is also provided. One end of the transmission rod is fixedly installed on the opening rod, and the other end of the transmission rod is pressed against the side wall of the central swing arm along its swing unlocking direction through line contact. When the opening rod 1 is pressed, the transmission rod 2, which is fixed to the opening rod by two screws, will move synchronously. Since the transmission rod 2 is in line contact with the central swing arm 4, the movement of the transmission rod 2 will push the central swing arm 4 to rotate around the central fulcrum.

[0030] The distance from the contact point between the central swing arm and the transmission rod to its rotation fulcrum is different from the distance from the contact point between the central swing arm and the transmission mechanism to its rotation fulcrum. The two sides of the central swing arm 4 are of different lengths. The transmission rod 2 and the slider 7 contact the central swing arm 4 at the first point 13 and the second point 14, respectively. As can be seen from the figure, the positions of the two points from the rotation center are different, that is, the lever arms are different. If the positions of these two points are changed, the magnitude of the opening pressing force can be controlled.

[0031] It is also equipped with a reset elastic element 10, which is installed on the inner handle. The reset elastic element provides the opening rod with an elastic holding force to keep it from being pressed by the central elastic arm.

[0032] The inner handle includes a handle body 12 and a handle cover 3. The handle body has a slide rail for the opening rod to slide along, and a limiting post 11 is provided on the slide rail. The opening rod is slidably inserted into the slide rail of the handle body. The opening rod has an elongated hole extending along its sliding direction, and the limiting post is slidably inserted into the elongated hole on the opening rod. The handle cover covers the surface of the handle body, and the opening rod is clamped between the handle body and the handle cover. A connecting screw is provided on the handle cover, and the connecting screw is screwed to the limiting post on the handle body. After unlocking, releasing the opening rod 1 causes it to spring upwards under the action of two return springs 10. The height of the spring is limited by the limiting post 11 on the handle cover, and the downward pressing distance can also be controlled by the limiting post 11.

[0033] The opening lever exposes a curved surface on the outer side of the inner handle, providing a comfortable and pleasant feel when pressed.

Claims

1. A push-to-unlock mechanism, comprising an inner door lock cover plate (6) and a square strip seat (9), wherein the square strip seat is rotatably mounted on the inner side of the inner door lock cover plate, and the forward and reverse rotation of the square strip seat enables the extension and retraction of the door lock latch and the oblique latch to lock or unlock the door, characterized in that: It also includes an inner handle, an opening rod (1), a central swing arm (4), and a transmission mechanism. The central swing arm is mounted on the inner cover of the door lock, which can swing around a fulcrum on the inner cover of the door lock. The inner handle is fixedly mounted on the outer surface of the inner cover of the door lock. The opening rod is slidably mounted on the inner handle. One end of the opening rod can protrude from the outer side of the inner handle. The other end of the opening rod can drive one end of the central swing arm to swing back and forth. The other end of the central swing arm can drive the square bar seat to rotate back and forth through the transmission mechanism. A transmission rod (2) is also provided. One end of the transmission rod is fixedly mounted on the opening rod. The other end of the transmission rod is tightly pressed against the side wall of the central swing arm along its swing unlocking direction through line-to-line contact. The distance from the contact point between the central swing arm and the transmission rod to its rotation fulcrum is different from the distance from the contact point between the central swing arm and the transmission mechanism to its rotation fulcrum. A reset elastic element (10) is also provided. The reset elastic element is mounted on the inner handle. The reset elastic element provides the opening rod with an elastic holding force to keep it from being pressed against the central elastic arm. The inner cover of the door lock has a through hole connecting the inner and outer sides. The central swing arm passes through the through hole, and there is a set gap between the outer circumference of the central swing arm and the inner sidewall of the through hole. The central swing arm forms radially protruding baffles on the two opposite sidewalls at one end of the inner cover of the door lock. Two pressure blocks (5) are fixedly installed on the inner sidewall of the inner cover of the door lock. The pressure blocks and the inner sidewall of the inner cover of the door lock form a space for the two protruding baffles on the central swing arm to be inserted. The inner handle includes a handle body (12) and Handle cover (3), a slide for the opening rod to slide on the handle body, and a limiting post (11) is provided on the slide. The opening rod can be slidably inserted into the slide of the handle body. The opening rod is provided with an elongated hole extending along its sliding direction. The limiting post can be slidably inserted into the elongated hole on the opening rod. The handle cover covers the surface of the handle body. The opening rod is clamped between the handle body and the handle cover. The handle cover is provided with a connecting screw. The connecting screw is screwed to the limiting post on the handle body.

2. The press-to-unlock mechanism according to claim 1, characterized in that: The transmission mechanism includes a gear and a rack (8). The gear is coaxially connected to the square rack seat. The rack is installed on the inner side wall of the door lock inner cover plate and can slide back and forth along a straight line. The gear and the rack mesh and drive each other. The other end of the central swing arm swings back and forth and can move the rack to slide back and forth.

3. The press-to-unlock mechanism according to claim 2, characterized in that: The transmission mechanism also includes a slider (7), which is fixedly installed on one end of the rack and is hinged to the other end of the central swing arm, which can slide along the direction perpendicular to the slider.

4. The press-to-unlock mechanism according to claim 1, characterized in that: The opening lever exposes the pressing part on the outside of the inner handle, forming an arc-shaped surface.

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