Door lock

Abstract

A door lock comprises a first lock body, a first spring bolt and a movable handle, the movable handle comprises an operation part and a transmission end, and the operation part is used for being pressed to enable the movable handle to tilt; the anti-theft lock further comprises first square iron, a positioning rod and a bottom plate, the first square iron is in transmission connection with the first lock body, and a first spring bolt on the first lock body can be retracted when the first square iron rotates in the forward direction. The connecting rod mechanism comprises a driving connecting rod, a middle connecting rod and a driven connecting rod, and the driven connecting rod can drive the first square iron to rotate; the driving end of the movable handle is in transmission connection with the driving connecting rod, and when the operation part of the movable handle is pressed and operated, the driving connecting rod can be tilted to swing, so that the first square iron can be driven by the connecting rod mechanism to rotate in the forward direction to retract the first spring bolt. The power conversion structure is not prone to abrasion and clamping stagnation in actual use, and the hand feeling is smoother and lighter when the movable handle is pressed.

Description

Technical Field

[0001] The invention relates to a door lock for locking a door leaf, which door lock proposes a completely different unlocking solution. Background Art

[0002] The common knob-type door lock handle is not only convenient for users to hold and push the door leaf, but also serves as a switch device for the door lock on a mechanical lock. The user controls the extension and retraction of the lock tongue by rotating the knob-type door lock handle to lock and unlock the door. For the specific structure, please refer to the prior art such as CN202010625267.5. In contrast, the handle on the large handle door lock is fixed and cannot be rotated. On the mechanical lock, a manual switch is required to control the extension and retraction of the lock tongue. For example, the Chinese patent CN102979364B discloses an integrated large handle lock, which includes a handle assembly, a lock core assembly, a lock tongue assembly, a button, and a deadlock lock tongue assembly, wherein the button can be mounted on the handle assembly in a seesaw-like motion. When the deadlock bolt assembly is unlocked by the transmission rod of the lock core assembly, the gear drive unit is meshed with the gear, pressing the button drives the gear drive block to move downward, and the square shaft is driven to rotate by the gear drive unit to open the bolt assembly. Release the button to move upward and reset under the action of the reset spring to control the bolt assembly; when the deadlock bolt assembly is locked, the gear drive unit is separated from the gear, and even if the button is pressed, the square shaft cannot be driven to rotate, and the control of the bolt assembly fails. The above-mentioned existing patent controls the opening of the bolt assembly by converting the tilting of the button into the rotation of the square shaft through the meshing transmission between the rack and the gear of the gear drive unit. After long-term use, the rack and gear of the gear drive unit will inevitably wear out. What is more serious is that the adhesion of debris such as sand may cause a jamming phenomenon, which affects the smoothness of the operation between the rack and the gear of the gear drive unit, resulting in the need to increase the pressing force of the button, which feels heavy and is also easy to damage the button. Summary of the invention

[0003] In view of the deficiencies of the prior art, one of the inventive objectives of the present invention is to propose another power conversion structure. The present invention proposes a door lock, comprising: a first lock body, comprising a first lock tongue that can be telescopically moved; a movable handle, the movable handle is used to be arranged on one side of the door leaf, and comprises an operating part and a transmission end, the operating part is used to be pressed to operate so that the movable handle can tilt; it is characterized in that: it also includes a first square iron, a positioning rod and a base plate, the base plate is used to be installed on the side surface of the door leaf, the positioning rod is arranged on the left side of the base plate, the right end of the positioning rod is fixed on the base plate, the first square iron is hollow, the first square iron is inserted into the positioning rod and can rotate on the positioning rod; the first square iron is transmission-connected to the first lock body, and can retract the first lock tongue on the first lock body when the first square iron rotates in the forward direction; a connecting rod mechanism, the connecting rod mechanism is arranged On the left side of the base plate, the connecting rod mechanism includes an active connecting rod, an intermediate connecting rod and a driven connecting rod, wherein the two ends of the intermediate connecting rod are respectively hingedly connected to the movable end of the active connecting rod and the movable end of the driven connecting rod, the fixed end of the active connecting rod is rotated on the base plate, and the connecting rod mechanism is positioned on the base plate by means of the rotating structure between the fixed end of the active connecting rod and the base plate, the fixed end of the driven connecting rod is transmission-connected to the first square iron, and the driven connecting rod can drive the first square iron to rotate; the transmission end of the movable handle is transmission-connected to the active connecting rod, and when the operating part of the movable handle is pressed, the active connecting rod can be tilted so that the first square iron can be driven to rotate forward with the help of the connecting rod mechanism to retract the first locking tongue.

[0004] According to the above technical solution, compared with the prior art, the beneficial technical effects of the present invention are: first, due to the provision of the connecting rod mechanism, the tilting of the movable handle can be cleverly converted into the positive rotation of the first square iron. Compared with the rack and pinion transmission method adopted in the existing patent CN102979364B, the connecting rod mechanism is not easy to wear or get stuck, and the hand feels smoother and lighter when pressing the movable handle. Secondly, in specific applications, the first square iron, the positioning rod, and the connecting rod mechanism can be integrated together in advance with the help of the bottom plate to facilitate later installation.

[0005] Since the present invention has the above characteristics and advantages, it can be applied to door locks. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 This is a schematic diagram of the structure of a door lock in the main viewing direction using the technical solution of the present invention;

[0007] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure in the AA direction;

[0008] Figure 3 is a schematic diagram of the three-dimensional structure of the panel assembly module 100;

[0009] Figure 4 is a schematic diagram of the exploded structure of the panel assembly module 100;

[0010] Figure 5 is a schematic diagram of the structure of the panel assembly module 100 in a rearward view direction;

[0011] Figure 6 It is a schematic diagram of the exploded structure of the connecting rod mechanism 6. DETAILED DESCRIPTION

[0012] The structure of the door lock using the technical solution of the present invention is further described below in conjunction with the accompanying drawings. Except for those explicitly described as equivalent or optional implementation schemes, the various implementation details disclosed below can be selectively applied or combined in one embodiment even if there is no direct correlation or synergy in terms of function.

[0013] like Figures 1 to 6 As shown, the present invention proposes a door lock, comprising: a first lock body 1, comprising a first lock tongue 10 that can be telescopically moved; a movable handle 2, the movable handle 2 is used to be arranged on one side of the door leaf 300, comprises an operating portion 21 and a transmission end 22, the operating portion 21 is used to be pressed to operate so that the movable handle 2 can tilt; it is characterized in that it also includes a first square iron 31, a positioning rod 4 and a bottom plate 5, the bottom plate 5 is used to be installed on the side surface of the door leaf 300, the positioning rod 4 is arranged on the left side of the bottom plate 5, the right end of the positioning rod 4 is fixed on the bottom plate 5, the first square iron 31 is hollow, the first square iron 31 is inserted into the positioning rod 4 and can rotate on the positioning rod 4; the first square iron 31 is transmission-connected to the first lock body 1, and can be retracted from the first lock body 1 when the first square iron 31 rotates forward. The first locking tongue 10; the connecting rod mechanism 6, which is arranged on the left side of the base plate 5, and the connecting rod mechanism 6 includes an active connecting rod 61, an intermediate connecting rod 63 and a driven connecting rod 62, wherein the two ends of the intermediate connecting rod 63 are respectively hingedly connected to the movable end of the active connecting rod 61 and the movable end of the driven connecting rod 62, the fixed end of the active connecting rod 61 is rotated on the base plate 5, the fixed end of the driven connecting rod 62 is transmission connected to the first square iron 31, and the driven connecting rod 62 can drive the first square iron 31 to rotate; the transmission end 22 of the movable handle 2 is transmission connected to the active connecting rod 61, when the operating part 21 of the movable handle 2 is pressed, the active connecting rod 61 can be tilted to swing, so that the first square iron 31 can be driven to rotate forward with the help of the connecting rod mechanism 6 to retract the first locking tongue 10.

[0014] The movable handle 2 is used to retract the first locking tongue 10 by tilting, and can be applied to the application scenario where the handle is fixed and cannot be moved. The extension directions of the operating portion 21 and the transmission end 22 are parallel to each other, the operating portion 21 is located on the right side of the bottom plate 5, and the transmission end 22 extends over the bottom plate 5 to the left side of the bottom plate 5. The structure of the movable handle 2 is diverse, and in other embodiments, the extension directions of the operating portion 21 and the transmission end 22 can be inclined to each other.

[0015] Wherein, the bottom plate 5 can be used to provide a positioning basis for integrating the first square iron 31, the positioning rod 4, and the connecting rod mechanism 6. Further, it also includes a panel 11, the panel 11 is used to be installed on the side surface of the door leaf 300, and the movable handle 2 can be tilted on the panel 11; when the panel 11 is installed on the side surface of the door leaf 300, the panel 11 covers the outside of the bottom plate 5, the first square iron 31, the positioning rod 4 and the connecting rod mechanism 6. In a specific application, before leaving the factory, the bottom plate 5, the first square iron 31, the positioning rod 4 and the connecting rod mechanism 6 can be pre-assembled and integrated on the panel 11 to facilitate the on-site installation of the lock later. Wherein, the bottom plate 5 and the panel 11 can be a split or integrated structure. Further, the bottom plate 5 has a concave cavity with an opening facing the left side, and the connecting rod mechanism 6 is arranged in the concave cavity.

[0016] Wherein, the positioning rod 4 can provide rotation support for the first square iron 31. In this embodiment, it also includes a washer 501, a right-side opening retaining ring 502 and a left-side opening retaining ring 503. An annular right groove 42 is provided on the right side end of the positioning rod 4, and the right side end of the positioning rod 4 passes through the bottom plate 5 so that the annular right groove 42 is arranged on the right side of the bottom plate 5. The washer 501 and the right-side opening retaining ring 502 are arranged on the right side of the bottom plate 5 and are sleeved on the right side end of the positioning rod 4, and the washer 501 is located on the left side of the right-side opening retaining ring 502. The right-side opening retaining ring 502 is clamped on the annular right groove 42 and clamps the washer 501 together with the bottom plate 5 to prevent the positioning rod 4 from detaching from the bottom plate 5 to the left. An annular left groove is provided on the left side end of the positioning rod 4, and the left side opening retaining ring 503 is clamped on the annular left groove to block the left side of the second square iron 32 (for radial linkage with the inner hand 8), so that the right side end of the positioning rod 4 is fixed on the bottom plate 5, and the first square iron 31 and the second square iron 32 are restricted on the positioning rod 4.

[0017] There are many ways to connect the fixed end of the driven connecting rod 62 to the first square iron 31 in a transmission manner. For example, the fixed end of the driven connecting rod 62 is provided with a shaft, and the driven connecting rod 62 is screwed on the bottom plate 5 through the shaft. The fixed end of the driven connecting rod 62 and the first square iron 31 are driven by gear meshing. When the driven connecting rod 62 swings around the shaft, the first square iron 31 is driven to rotate. In this embodiment, the fixed end of the driven connecting rod 62 is provided with an end through hole 620, and the driven connecting rod 62 is inserted into the first square iron 31 through the end through hole 620. The right end wall of the first square iron 31 is in a notch shape and includes a protrusion 311 and a notch 312. The size of the protrusion 311 is configured to be inserted into the end through hole 620 and ensure that it forms a transmission connection with the driven connecting rod 62. The size of the notch 312 is configured to be able to support the driven connecting rod 62 and prevent it from moving axially to the left. In this way, power can be transmitted through the cooperation between the protrusion 311 and the end through hole 620, and the fixed end of the driven connecting rod 62 can be positioned through the cooperation between the notch 312 and the bottom plate 5. Further, the end through hole 620 is a rectangular hole, the right end of the first square iron 31 is rectangular, and the first square iron 31 is provided with a pair of protrusions 311 arranged at intervals. When the driven connecting rod 62 swings, the hole wall of the end through hole 620 twists the pair of protrusions 311 to drive the first square iron 31 to rotate. Of course, in other embodiments, the end through hole 620 can also be a triangle, an ellipse or other special shapes, and the shape of the right end of the first square iron 31 is adaptively modified accordingly. The transmission end 22 of the movable handle 2 is arranged below the active connecting rod 61 through the bottom plate 5. When the operating portion 21 of the movable handle 2 is pressed downward, the transmission end 22 tilts upward around the rotating shaft 23 to drive the active connecting rod 61 to swing around its fixed end. At this time, the intermediate connecting rod 63 drives the driven connecting rod 62 to swing around the positioning rod 4 and drives the first square iron 31 to rotate forward to retract the first locking tongue 10. When the driven connecting rod 62 is reset, it can also drive the first square iron 31 to rotate in the opposite direction to extend the first locking tongue 10.

[0018] Furthermore, it also includes a cover plate 5a arranged on the left side of the bottom plate 5, a plug-in shaft 64, and a radial protrusion 65 arranged on the middle area of ​​the plug-in shaft 64. The connecting rod mechanism 6 and the radial protrusion 65 are arranged between the cover plate 5a and the bottom plate 5. The two ends of the plug-in shaft 64 are respectively plugged into the cover plate 5a and the bottom plate 5. The fixed end of the active connecting rod 61 is rotatably sleeved on the plug-in shaft 64, and the fixed end of the active connecting rod 61 is axially limited to the side of the radial protrusion 65. The radial protrusion 65 and the plug-in shaft 64 can be a split or integrated structure. The radial protrusion 65 is arranged between the cover plate 5a and the bottom plate 5, so that the two ends of the plug-in shaft 64 remain plugged into the cover plate 5a and the bottom plate 5, respectively, so that the fixed end of the active connecting rod 61 remains sleeved on the plug-in shaft 64, wherein a plate through hole 612 may be provided on the fixed end of the active connecting rod 61, and sleeved on the plug-in shaft 64 through the plate through hole 612. In addition, the two ends of the intermediate connecting rod 63 are respectively hingedly connected with the movable end of the active connecting rod 61 and the movable end of the driven connecting rod 62 through a hinge mechanism composed of a socket and a hinge shaft, and the hinge shaft is located between the cover plate 5a and the bottom plate 5. The hinge shaft and the intermediate connecting rod 63, the active connecting rod 61 or the driven connecting rod 62 may be a split or integrated structure. In this embodiment, the two ends of the intermediate connecting rod 63 are respectively provided with a second insertion hole 631 and a first insertion hole 632. A first hinge shaft 611 is integrally formed on the movable end of the active connecting rod 61, and a second hinge shaft 621 is integrally formed on the movable end of the driven connecting rod 62. The first hinge shaft 611 is inserted into the first insertion hole 632, and the second hinge shaft 621 is inserted into the second insertion hole 631. Under the action of the bottom plate 5 and the cover plate 5a being limited from the left and right sides respectively, the first hinge shaft 611 is kept inserted into the first insertion hole 632, and the second hinge shaft 621 is kept inserted into the second insertion hole 631. In order to fix the bottom plate 5 and the cover plate 5a together, a fixing claw portion 51a is provided on at least one of the bottom plate 5 and the cover plate 5a, and the fixing claw portion 51a is bent and overlapped on the other of the bottom plate 5 and the cover plate 5a.

[0019] In summary, it can be seen that the bottom plate 5 and the cover plate 5a are cleverly used to limit the positions from the left and right sides, respectively, so that not only the two ends of the intermediate connecting rod 63 are respectively hinged with the movable end of the active connecting rod 61 and the movable end of the driven connecting rod 62, but also the fixed end of the active connecting rod 61 can be kept sleeved on the plug-in shaft 64 and rotated on the bottom plate 5. On this basis, the notched right end wall of the first square iron 31 is used to realize the transmission connection between the fixed end of the driven connecting rod 62 and the first square iron 31, and the bottom plate 5 assists in positioning the fixed end of the driven connecting rod 62. The above structure is very simple and compact, and the installation is also very convenient.

[0020] like Figure 4 and Figure 5 As shown, it also includes an elastic reset mechanism 66 for driving the link mechanism 6 to reset, the elastic reset mechanism 66 presses the active link 61 downward, and the transmission end 22 of the movable handle 2 is located below the active link 61. In this embodiment, the elastic reset mechanism 66 is a torsion spring (in other embodiments, the elastic reset mechanism 66 can also be an elastic member such as a compression spring), including a main body 660 and a first leg 661 and a second leg 662 extending from the main body 660. A first positioning protrusion 51 and a second positioning protrusion 52 are provided on the bottom plate 5, the main body 660 is inserted into the first positioning protrusion 51, the first leg 661 presses downward on the convex block 613 of the active link 61, and the second leg 662 presses on the second positioning protrusion 52. A limiting protrusion 53 is also provided on the bottom plate 5. The limiting protrusion 53 is located below the active connecting rod 61. The limiting protrusion 53 is used to limit the maximum downward swing limit position of the active connecting rod 61. When the operating portion 21 of the movable handle 2 is pressed downward to lift the active connecting rod 61 upward, the elastic reset mechanism 66 is compressed and deformed by the active connecting rod 61; when the pressing operation is eliminated, the elastic reset mechanism 66 returns to its original state and drives the active connecting rod 61 and the movable handle 2 to reset. When the active connecting rod 61 swings onto the limiting protrusion 53, the active connecting rod 61 stops swinging downward and returns to and stays at the original position.

[0021] like Figure 4As shown, it also includes a pair of support columns 41 arranged on the left side of the bottom plate 5, the right side end of the support column 41 is fixed on the bottom plate 5, the support column 41 passes over the cover plate 5a and extends to the left side of the cover plate 5a, and the first lock body 1 is fixedly connected to the pair of support columns 41 and is located on the left side of the cover plate 5a. In this way, the bottom plate 5 also provides support for the pair of support columns 41 and the first lock body 1. The support column 41 passing over the cover plate 5a can be understood as a through hole provided on the cover plate 5a, the support column 41 passes through the through hole, or the cover plate 5a is arranged to avoid the support column 41.

[0022] like Figure 1 and Figure 3 As shown, the door lock further includes a second lock tongue 10a and an electric driver 16 for driving the second lock tongue 10a to retract, and a handle for fixing to the door leaf. The handle is integrally formed with the panel 11, and the handle is provided with a vertically extending gripping handle 15. The handle and the movable handle 2 are arranged on the same side of the door leaf, and the movable handle 2 is located directly above the gripping handle 15. A pickup device 120 for picking up finger bio-signals is provided on the inner side wall of the gripping handle 15, and the electrical signal of the pickup device 120 is connected to a controller (not shown in the figure), and the controller is used to control the action of the electric driver 16; when the movable handle 2 is tilted by pressing the thumb to retract the first locking tongue 10, four fingers are also synchronously gripped on the gripping handle 15, and at this time, the finger bio-signals of the fingers gripping the gripping handle 15 are picked up by the pickup device 120, and when the picked-up finger bio-signals are judged to be authorization signals, the controller controls the electric driver 16 to drive the second locking tongue 10a to retract to open the door leaf. The panel 11, the movable handle 2, the handle, the first square iron 31, the positioning rod 4 and the bottom plate 5 constitute a panel assembly module 100.

Claims

1. Door locks, including: The first lock body comprises a first lock tongue capable of telescopic movement; A movable handle, the movable handle is used to be arranged on one side of the door leaf, including an operating part and a transmission end, the operating part is used to be pressed to operate the movable handle to tilt; characterized in that it also includes a first square iron, a positioning rod and a bottom plate, the bottom plate is used to be installed on the side surface of the door leaf, the positioning rod is arranged on the left side of the bottom plate, the right end of the positioning rod is fixed on the bottom plate, the first square iron is hollow, the first square iron is inserted into the positioning rod and can rotate on the positioning rod; the first square iron is transmission-connected to the first lock body, and when the first square iron rotates in the positive direction, the first lock tongue on the first lock body can be retracted; A connecting rod mechanism is arranged on the left side of the base plate, and the connecting rod mechanism includes an active connecting rod, an intermediate connecting rod and a driven connecting rod, wherein the two ends of the intermediate connecting rod are respectively hingedly connected to the movable end of the active connecting rod and the movable end of the driven connecting rod, the fixed end of the active connecting rod is rotated on the base plate, the fixed end of the driven connecting rod is transmission connected to the first square iron, and the driven connecting rod can drive the first square iron to rotate; the transmission end of the movable handle is transmission connected to the active connecting rod, and when the operating part of the movable handle is pressed, the active connecting rod can be tilted to swing, so that the first square iron can be driven to rotate forward with the help of the connecting rod mechanism to retract the first locking tongue.

2. The door lock according to claim 1, characterized in that: It also includes an elastic reset mechanism for driving the connecting rod mechanism to reset, the elastic reset mechanism presses the active connecting rod downward, and the transmission end of the movable handle is located below the active connecting rod; when the operating part of the movable handle is pressed downward and the active connecting rod is lifted upward, the elastic reset mechanism is compressed and deformed by the active connecting rod; when the pressing operation is eliminated, the elastic reset mechanism returns to its original state and drives the active connecting rod and the movable handle to reset.

3. The door lock according to claim 2, characterized in that: A limiting protrusion is also arranged on the bottom plate, and the limiting protrusion is located below the active connecting rod, and the limiting protrusion is used to limit the maximum downward swing limit position of the active connecting rod.

4. The door lock according to claim 1, characterized in that: The bottom plate has a concave cavity opening toward the left side, and the link mechanism is arranged in the concave cavity.

5. The door lock according to claim 1, characterized in that: It also includes a panel, which is used to be installed on the side surface of the door leaf, and the movable handle can be tilted on the panel; when the panel is installed on the side surface of the door leaf, the panel covers the outside of the bottom plate, the first square iron, the positioning rod and the connecting rod mechanism.

6. The door lock according to claim 1, characterized in that: The fixed end of the driven connecting rod is provided with an end through hole, and the driven connecting rod is sleeved on the first square iron through the end through hole.

7. The door lock according to claim 6, characterized in that: The right end wall of the first square iron is in a notch shape and includes a protrusion and a notch. The size of the protrusion is configured to be able to be inserted into the end through hole and ensure a transmission connection with the driven connecting rod. The size of the notch is configured to be able to support the driven connecting rod and prevent it from moving axially to the left.

8. The door lock according to any one of claims 1 to 7, characterized in that: It also includes a cover plate arranged on the left side of the base plate, a plug-in shaft and a radial protrusion arranged on the middle area of ​​the plug-in shaft. The connecting rod mechanism and the radial protrusion are arranged between the cover plate and the base plate. The two ends of the plug-in shaft are respectively plugged into the cover plate and the base plate. The fixed end of the active connecting rod is rotatably sleeved on the plug-in shaft, and the fixed end of the active connecting rod is axially limited to the side of the radial protrusion.

9. The door lock according to claim 8, characterized in that: It also includes a pair of support columns arranged on the left side of the base plate, the right end of the support column is fixed on the base plate, the support column extends over the cover plate to the left side of the cover plate, and the first lock body is fixedly connected to the pair of support columns and is located on the left side of the cover plate.

10. The door lock according to claim 8, characterized in that: The two ends of the intermediate connecting rod are respectively connected to the movable end of the active connecting rod and the movable end of the driven connecting rod through an articulated mechanism composed of a socket and an articulated shaft, and the articulated shaft is located between the cover plate and the bottom plate.

11. The door lock according to any one of claims 1 to 7, characterized in that: It also includes a second lock tongue, an electric driver for driving the second lock tongue to retract, and a handle for fixing to the door leaf, the handle and the movable handle are arranged on the same side of the door leaf, and a picking device for picking up finger biometric signals is provided on the inner wall of the handle, the electrical signal of the picking device is connected to a controller, and the controller is used to control the action of the electric driver; when the movable handle is pressed and tilted by hand to retract the first lock tongue, the handle can be held synchronously, and at this time, the finger biometric signal of the finger holding the handle is picked up by the picking device, and when the picked up finger biometric signal is judged to be an authorization signal, the controller controls the electric driver to drive the second lock tongue to retract to open the door leaf.

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