Intelligent door lock

Abstract

The utility model belongs to the technical field of door locks, and discloses an intelligent door lock which comprises a first lock part and a second lock part. The second lock part is provided with a lock rod; the first lock part is provided with a support, the support is provided with a limiting switch, an unlocking mechanism, an electric limiting mechanism and a mandrel, the mandrel is rotationally connected with a first spring bolt and a second spring bolt, and the second spring bolt is provided with a lock groove matched with the lock rod; when the limiting tongue of the electric limiting mechanism stretches out, the limiting tongue is located on the rotating path of the first spring bolt relative to the mandrel and stops the first spring bolt from passing through, the rotating radius of the second spring bolt is smaller than that of the first spring bolt, and no interference position exists between the second spring bolt and the limiting tongue. And the limitation on the first spring bolt is relieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of door locks, and in particular relates to an intelligent door lock. Background Art

[0002] Door locks are devices used to lock doors, and different scenarios also place different requirements on door locks.

[0003] In a construction site, workers generally use elevators to reach different floors, wherein the closing and opening functions of the elevator cabin are achieved through the door lock of the safety door.

[0004] In actual production and life, due to various unexpected factors, such as power outages and human interference, whether the door lock is intelligent enough to deal with various emergencies is a question that needs to be considered. Utility Model Content

[0005] In view of the problems raised by the above background technology, the purpose of the present invention is to provide a smart door lock.

[0006] In order to achieve the above technical objectives, the technical solutions adopted by this utility model are as follows:

[0007] A smart door lock comprises a first locking part and a second locking part, wherein the first locking part and the second locking part are locked with each other to close the door, and the first locking part and the second locking part are separated from each other to unlock the door;

[0008] The second locking portion is provided with a locking rod;

[0009] The first lock part is provided with a bracket, the bracket is equipped with a limit switch, an unlocking mechanism, an electric limit mechanism, and a spindle, the spindle is rotatably connected to the first lock tongue and the second lock tongue, and the second lock tongue is provided with a lock groove that cooperates with the lock rod;

[0010] The spindle passes through the bracket, the first lock tongue and the second lock tongue are located inside the bracket, and the bracket is provided with an opening for a lock rod to enter and exit at a position corresponding to the second lock tongue. When the lock rod is locked with the second lock tongue, the detection head of the limit switch is triggered by the lock rod, and the upper end of the first lock tongue is exposed outside the bracket;

[0011] When the limiting tongue of the electric limiting mechanism is extended, it is located on the rotation path of the first lock tongue about the spindle and blocks the first lock tongue from passing through. The rotation radius of the second lock tongue is smaller than that of the first lock tongue and there is no interference between the second lock tongue and the limiting tongue. When the limiting tongue of the electric limiting mechanism is in the retracted position, the restriction on the first lock tongue is released.

[0012] The first lock tongue is provided with a paddle for moving the second lock tongue to unlock the second lock tongue, and the unlocking mechanism is connected to the paddle.

[0013] In the present invention, the first lock part and the second lock part are respectively installed on the two doors. The first lock part and the second lock part are locked with each other to close the door, and the first lock part and the second lock part are separated from each other to unlock the door.

[0014] Specifically, when the two doors are closed together, the first lock part and the second lock part are also closed together under the influence of the doors, the lock rod enters the interior of the bracket through the opening, and hits the second lock tongue, driving the second lock tongue to rotate about the spindle in the direction of the elevator cabin. During the rotation of the second lock tongue, the direction of the lock groove changes continuously. When the direction of the lock groove points to the lock rod, the lock rod slides into the lock groove, and the two doors reach a relative position in the closed state. The second lock tongue adopts a top-heavy counterweight design. When the lock rod slides into the lock groove, the second lock tongue automatically rotates under the action of gravity, thereby changing the direction of the lock groove. At this time, since the direction of the lock groove has changed, the lock rod cannot be withdrawn along the original path, and separation from the second lock tongue cannot be achieved, that is, locking is achieved;

[0015] After the locking rod moves in the direction of the second lock tongue and reaches the designated position, the locking rod triggers the detection head of the limit switch, indicating that the lock is in place.

[0016] From the above process, it can be seen that the locking of the lock rod and the second lock tongue is not controlled by the electric limit mechanism. The rotation radius of the second lock tongue is smaller than that of the first lock tongue and there is no interference between the second lock tongue and the limit tongue. Therefore, when the electric limit mechanism is accidentally powered off and the limit tongue is extended, the elevator cabin safety door can also be closed.

[0017] The significance of the electric limit mechanism is mainly reflected in the unlocking process. The utility model has two unlocking methods. The first method is that the person inside the cabin unlocks from the inside to the outside, and the second method is that the person outside the cabin unlocks from the outside to the inside.

[0018] In the first method, an insider uses the unlocking mechanism to push the first lock tongue about the spindle toward the elevator cabin. Since the first lock tongue is provided with a paddle, the paddle rotating with the first lock tongue will drive the second lock tongue to rotate in the same direction. The lock groove on the second lock tongue rotates to the direction where the locking rod can be disengaged, and the elevator cabin safety door can be opened.

[0019] In the second method, an outsider adjusts the circumferential position of the first lock tongue by shifting the end of the first lock tongue exposed outside the bracket, thereby causing the shifting piece to drive the second lock tongue to rotate in the same direction. The lock groove on the second lock tongue rotates to the direction where the lock rod can be disengaged, thereby unlocking the door.

[0020] In the above two unlocking methods, the first lock tongue needs to rotate within a certain angle range. Since the extended limit tongue is in the rotation path of the first lock tongue about the spindle, it cannot be unlocked when the limit tongue is extended. This provides a secondary guarantee for the closing of the safety door, avoiding various safety accidents such as falling, falling objects, etc. caused by improper operation of the staff while the elevator is still in the up and down movement. The electric limit mechanism and the controller for controlling the elevator up and down are interrelated. When the elevator runs to the designated floor, the electric limit mechanism obtains electrical energy under the action of the controller, retracts the limit tongue, and releases the restriction. If the elevator does not reach the designated floor, the electric limit mechanism is always in a power-off state, and the limit tongue is in the extended position, limiting the rotation of the first lock tongue about the spindle.

[0021] As a preferred technical solution of the present invention, the second locking part also includes an outer handle, which is semi-enclosed. The end of the outer handle is fixedly connected to the end of the locking rod. The locking rod closes the open side of the outer handle. When the locking rod is locked with the second lock tongue, the outer handle surrounds the opening of the bracket.

[0022] The utility model is provided with an external handle. On the one hand, the external handle provides a fulcrum for pushing and pulling the safety door. On the other hand, the external handle closes the opening of the bracket through its semi-enclosed shape. When the lock rod is locked with the second lock tongue, the opening is surrounded by the external handle. This prevents outsiders from inserting their fingers or various tools into the bracket through the opening to rotate the second lock tongue and unlock the door. This irregular unlocking method is likely to cause finger jamming or increase the possibility of damage to the internal structure.

[0023] In some optional instances, after the locking rod and the outer handle are fixed together, a base can be connected to fix the locking rod and the outer handle on the safety door, and the position of the locking rod can be adjusted by the size of the base itself, so that after the safety door is closed, the locking rod is in the correct locking position.

[0024] As a preferred technical solution of the utility model, the electric limit mechanism is provided with an electromagnet, an absorbed body, a first spring, a pull rod, a pin, a push rod, and a forced unlocking rod. The end of the absorbed body close to the electromagnet is truncated cone-shaped and sleeved with the first spring. The other end of the absorbed body is connected to the limiting tongue. The pull rod is connected to the truncated cone-shaped end of the absorbed body and passes through the electromagnet.

[0025] The forced unlocking rod is rotatably connected to the bracket and both ends pass through the bracket. The detent rod is fixedly connected to the forced unlocking rod. The pull rod passes through the detent rod. The pin is inserted into the pull rod to limit the detent rod from detaching along the axial direction of the pull rod.

[0026] Since the electric limit mechanism is provided to serve as a secondary safeguard during the unlocking process, the present invention must take into account the situation in which the limit tongue of the electric limit mechanism cannot be retracted due to an unexpected power outage. In this situation, the limit tongue will always be within the rotation radius of the first lock tongue, making it impossible to unlock normally. In this situation, people inside and outside can drive the limit tongue to be forcibly retracted by twisting the forced unlocking lever. Specifically, the rotation of the forced unlocking lever will drive the dial lever to rotate accordingly. When the dial lever contacts the pin, the pull rod, the attracted body, and the limit tongue are retracted through the pin, and the first spring contracts. At this time, the smart door lock can be unlocked.

[0027] The normal working state of the electric limit mechanism when energized is as follows: the electromagnet is energized to generate magnetic force, and the attracted object moves closer to the electromagnet under the action of the magnetic force, the first spring is compressed, and the limit tongue is retracted along with the attracted object.

[0028] As a preferred technical solution of the present invention, the unlocking mechanism is provided with a push rod and a second spring, the second spring is sleeved on the outer ring of the push rod, and one end of the push rod is hinged to a push piece;

[0029] The first lock tongue is provided with a tongue body, the paddle and the tongue body are distributed in a corner shape, the paddle is further connected to a support block, and the support block is provided with a waist-shaped hole;

[0030] The other end of the push rod away from the pressing piece is connected to the supporting block through a latch, and the latch passes through the push rod and the waist-shaped hole.

[0031] The utility model is provided with an unlocking mechanism which is convenient for people inside the cabin to use. People inside press a button to move the push rod toward the outside of the door. The button follows the movement of the push rod, compressing the second spring. The push rod provides power for the rotation of the support block, the paddle, and the tongue through the latch. The first lock tongue rotates to achieve unlocking. After unlocking is completed, the second spring resets and drives the push rod back to its original position. Since the circumferential position of the support block changes when the first lock tongue rotates, a waist-shaped hole is provided to provide the latch with a certain amount of redundant space for movement.

[0032] As a preferred technical solution of the present invention, it also includes an inner handle fixed on the inner side of the door.

[0033] The utility model provides a gripping force point for a person to press the unlocking mechanism through the inner handle. Specifically, the inside person bends four fingers to grip the inner handle and presses the unlocking mechanism with the thumb.

[0034] As a preferred technical solution of the utility model, it also includes a grille connected to the bracket, the grille is provided with a plurality of holes for limiting the axial position of the first lock tongue and the second lock tongue on the core shaft, and the first lock tongue and the second lock tongue are located in different holes.

[0035] The utility model restricts the positions of the first locking tongue and the second locking tongue in the axial direction of the mandrel through a grille, avoiding the axial movement or distortion of the first locking tongue and the second locking tongue along the mandrel, and incorrect postures.

[0036] As a preferred technical solution of the utility model, the opening of the bracket is Y-shaped.

[0037] In the utility model, the Y-shaped opening has the characteristics of being large outside and small inside, which plays a role of converging and guiding, and can assist in defining the locking position of the locking rod.

[0038] As a preferred technical solution of the utility model, a water hole is provided at the bottom of the bracket.

[0039] In the utility model, the function of the water hole is to provide a channel for the external discharge of accumulated water inside the bracket. Since the construction environment is generally relatively harsh and there is less protection, rainwater may float into the inside of the bracket during rainy days and form accumulated water. In order to reduce the interference and damage of the accumulated water to various structures, therefore, the existence of the water hole is quite necessary.

[0040] As a preferred technical solution of the utility model, the limit switch is selected as a swing rod type limit switch.

[0041] In the utility model, the swing rod type limit switch has high reliability, and the detection head is rod-shaped with a large length distribution range, which is convenient for triggering the locking rod.

[0042] The beneficial effects of the utility model:

[0043] 1. The locking of the locking rod and the second locking tongue is not controlled by the electric limiting mechanism. The rotation radius of the second locking tongue is smaller than that of the first locking tongue and there is no interference position with the limiting tongue. Therefore, when the electric limiting mechanism accidentally loses power and the limiting tongue protrudes, the safety door of the elevator passenger cabin can also be closed;

[0044] 2. The electric limiting mechanism provides a secondary guarantee for the closing of the safety door, avoiding various safety accidents caused by improper operations of the staff and random opening of the door during the up and down operation of the elevator, such as falling by mistake, falling objects from a height, etc.;

[0045] 3. When the limiting tongue of the electric limiting mechanism cannot be retracted, both internal and external personnel can drive the limiting tongue to be forcibly retracted by twisting the forced unlocking rod. Specifically, the rotation of the forced unlocking rod will drive the lever to rotate accordingly. When the lever contacts the pin, the pin drives the pull rod, the suction body, and the limiting tongue to retract, and the first spring contracts. At this time, the intelligent door lock can be unlocked;

[0046] 4. The outer handle provides a fulcrum for sliding the safety door. On the one hand, it closes the opening of the bracket with its semi-enclosed shape. When the lock rod is locked with the second lock tongue, the opening is surrounded by the outer handle, preventing outsiders from inserting their fingers or various tools into the bracket through the opening to rotate the second lock tongue and unlock the door. This irregular unlocking method can easily cause finger injuries or increase the possibility of internal structural failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The present invention can be further described by way of non-limiting examples given in the accompanying drawings;

[0048] Figure 1 This is a schematic diagram of the structure of the embodiment of the utility model when it is actually installed and used;

[0049] Figure 2 This is a schematic structural diagram of an embodiment of the present invention when the back is displayed;

[0050] Figure 3 This is a structural diagram of the second locking portion in an embodiment of the present utility model;

[0051] Figure 4 This is a schematic diagram of the structure inside the first lock part in an embodiment of the present utility model;

[0052] Figure 5 This is a structural diagram of the second locking portion after the bracket is removed in an embodiment of the present utility model;

[0053] Figure 6 This is a structural diagram showing the relationship between the first lock tongue, the second lock tongue and the electric limiting mechanism in an embodiment of the present utility model;

[0054] Figure 7 This is a structural diagram showing the relationship between the first lock tongue, the unlocking mechanism and the electric limiting mechanism in an embodiment of the present utility model;

[0055] Figure 8 This is a structural diagram of the first lock tongue in an embodiment of the present utility model;

[0056] Figure 9 This is a structural diagram of the unlocking mechanism in an embodiment of the present utility model;

[0057] Figure 10 This is a first structural diagram of the electric limiting mechanism in an embodiment of the present utility model;

[0058] Figure 11 This is a second structural diagram of the electric limiting mechanism in an embodiment of the present utility model;

[0059] The main component symbols are described as follows:

[0060] 100. First locking part;

[0061] 200. Second locking part;

[0062] 300. Inner handle;

[0063] 110. Bracket; 111. Water hole; 112. Opening;

[0064] 120. Limit switch; 121. Detection head;

[0065] 130. First locking tongue; 131. Tongue body; 132. Paddle; 133. Support block; 134. Kidney-shaped hole;

[0066] 140. Second locking tongue;

[0067] 150. Grille;

[0068] 160. Unlocking mechanism; 161. Push rod; 162. Pressing piece; 163. Bolt; 164. Second spring;

[0069] 170. Electric limit mechanism; 171. Electromagnet; 172. Absorbed body; 173. Limit tongue; 174. First spring; 175. Pull rod; 176. Pin; 177. Lever; 178. Forced unlocking rod;

[0070] 180. Spindle;

[0071] 201. Lock rod; 202. Outer handle. Detailed implementation mode

[0072] In order to enable those skilled in the art to better understand the present utility model, the technical solution of the present utility model will be further described below with reference to the drawings and embodiments.

[0073] Example 1

[0074] This embodiment provides an intelligent door lock, including a first locking part 100 and a second locking part 200. The first locking part 100 and the second locking part 200 are locked with each other to realize the closing of the door, and the first locking part 100 and the second locking part 200 are separated from each other to realize the unlocking of the door;

[0075] The second locking part 200 is provided with a lock rod 201;

[0076] The first locking part 100 is provided with a bracket 110. The bracket 110 is installed with a limit switch 120, an unlocking mechanism 160, an electric limit mechanism 170, and a spindle 180. The spindle 180 is rotatably connected to a first locking tongue 130 and a second locking tongue 140. The second locking tongue 140 is provided with a lock groove for cooperating with the lock rod 201;

[0077] The spindle 180 passes through the bracket 110. The first and second locking tongues 130 and 140 are located inside the bracket 110. The bracket 110 has an opening 112 at a position corresponding to the second locking tongue 140 for the locking rod 201 to enter and exit. When the locking rod 201 is locked with the second locking tongue 140, the detection head 121 of the limit switch 120 is triggered by the locking rod 201, and the upper end of the first locking tongue 130 is exposed outside the bracket 110.

[0078] When the limiting tongue 173 of the electric limiting mechanism 170 is extended, it is located in the rotation path of the first lock tongue 130 about the spindle 180 and prevents the first lock tongue 130 from passing through. The rotation radius of the second lock tongue 140 is smaller than that of the first lock tongue 130 and there is no interference between the second lock tongue 140 and the limiting tongue 173. When the limiting tongue 173 of the electric limiting mechanism 170 is in the retracted position, the restriction on the first lock tongue 130 is released.

[0079] The first locking tongue 130 is provided with a paddle 132 for moving the second locking tongue 140 to unlock the second locking tongue 140 , and the unlocking mechanism 160 is connected to the paddle 132 ;

[0080] The electric limit mechanism 170 includes an electromagnet 171, an attracted body 172, a first spring 174, a pull rod 175, a pin 176, a lever 177, and a forced release lever 178. The end of the attracted body 172 closest to the electromagnet 171 is truncated cone-shaped and is sheathed with the first spring 174. The other end of the attracted body 172 is connected to the limit tongue 173. The pull rod 175 is connected to the truncated cone-shaped end of the attracted body 172 and passes through the electromagnet 171.

[0081] The forced unlocking lever 178 is rotatably connected to the bracket 110 and extends out of the bracket 110 at both ends. The lever 177 is fixedly connected to the forced unlocking lever 178. The pull rod 175 passes through the lever 177. The pin 176 is inserted into the pull rod 175 to prevent the lever 177 from detaching along the axial direction of the pull rod 175.

[0082] The unlocking mechanism 160 includes a push rod 161 and a second spring 164. The second spring 164 is sleeved on the outer ring of the push rod 161. One end of the push rod 161 is hinged to a button 162.

[0083] The first locking tongue 130 is provided with a tongue body 131, a paddle 132 and the tongue body 131 are arranged in an angled shape, the paddle 132 is further connected to a support block 133, and the support block 133 is provided with a waist-shaped hole 134;

[0084] The other end of the push rod 161 away from the pressing piece 162 is connected to the support block 133 through the latch 163, and the latch 163 passes through the push rod 161 and the waist-shaped hole 134;

[0085] The opening 112 of the bracket 110 is Y-shaped;

[0086] The limit switch 120 uses a rocker type limit switch.

[0087] In this embodiment, the first locking portion 100 and the second locking portion 200 are respectively installed on two doors. The first locking portion 100 and the second locking portion 200 are locked with each other to close the door, and the first locking portion 100 and the second locking portion 200 are separated from each other to unlock the door;

[0088] Specifically, when the two doors are closed to each other, the first locking portion 100 and the second locking portion 200 are also closed to each other driven by the doors. The locking rod 201 enters the inside of the bracket 110 through the opening 112 and collides with the second locking tongue 140, driving the second locking tongue 140 to rotate towards the inside of the elevator cabin about the spindle 180. During the rotation of the second locking tongue 140, the orientation of the locking groove is constantly changing. When the orientation of the locking groove points to the locking rod 201, the locking rod 201 slides into the locking groove. The two doors reach the relative positions in the closed state. The second locking tongue 140 adopts a counterweight design with a heavy head and a light foot. After the locking rod 201 slides into the locking groove, the second locking tongue 140 automatically rotates under the action of gravity, thereby changing the orientation of the locking groove. At this time, since the orientation of the locking groove has changed, the locking rod 201 cannot exit the original path and cannot be separated from the second locking tongue 140, that is, the locking is achieved;

[0089] After the locking rod 201 moves in place in the direction of the second locking tongue 140, the locking rod 201 triggers the detection head 121 of the limit switch 120, indicating that the locking is in place at this time;

[0090] It can be seen from the above process that the locking of the locking rod 201 and the second locking tongue 140 is not controlled by the electric limit mechanism 170. The rotation radius of the second locking tongue 140 is smaller than that of the first locking tongue 130 and there is no interference position with the limit tongue 173. Therefore, when the electric limit mechanism 170 accidentally loses power and the limit tongue 173 protrudes, the safety door of the elevator cabin can also be closed;

[0091] The significance of the electric limit mechanism 170 is mainly reflected in the unlocking process. The present invention has two unlocking methods. The first method is that the personnel inside the cabin unlock from the inside to the outside, and the second method is that the personnel outside the cabin unlock from the outside to the inside;

[0092] In the first method, the internal personnel push the first locking tongue 130 to rotate towards the inside of the elevator cabin about the spindle 180 through the unlocking mechanism 160. Since the first locking tongue 130 is provided with a dial 132, the dial 132 rotating together with the first locking tongue 130 will drive the second locking tongue 140 to rotate in the same direction. The locking groove on the second locking tongue 140 rotates to the orientation where the locking rod 201 can be disengaged. At this time, the safety door of the elevator cabin can be opened;

[0093] In the second method, an outsider adjusts the circumferential position of the first lock tongue 130 by shifting the end of the first lock tongue 130 exposed outside the bracket 110, thereby causing the paddle 132 to drive the second lock tongue 140 to rotate in the same direction. The lock groove on the second lock tongue 140 rotates to a direction in which the lock rod 201 can be disengaged, thereby achieving unlocking.

[0094] When the first locking tongue 130 is in the rotation path of the first locking tongue 130 about the spindle 180, the locking tongue 173 is extended, and the first locking tongue 130 cannot be unlocked. This provides a secondary guarantee for the closing of the safety door, thereby preventing the elevator from being opened and closed by improper operation of the staff and opening the door at will while the elevator is still in the process of moving up and down, resulting in various safety accidents such as falling or falling objects from a height. The electric limit mechanism 170 is interconnected with the controller for controlling the elevator up and down. When the elevator reaches the specified floor, the electric limit mechanism 170 obtains electric energy under the action of the controller, so that the limit tongue 173 is retracted and the restriction is released. If the elevator has not reached the specified floor, the electric limit mechanism 170 is always in the power-off state, and the limit tongue 173 is in the extended position, restricting the first locking tongue 130 from rotating about the spindle 180.

[0095] When unlocking, the person inside presses the push piece 162, causing the push rod 161 to move toward the outside of the door. The push piece 162 compresses the second spring 164 as it moves along with the push rod 161. The push rod 161 provides power to the rotation of the support block 133, the paddle 132, and the tongue 131 through the latch 163, causing the first lock tongue 130 to rotate and unlock. After unlocking is completed, the second spring 164 resets, driving the push rod 161 back to its original position. Since the circumferential position of the support block 133 changes when the first lock tongue 130 rotates, the waist-shaped hole 134 is provided to provide a certain amount of redundant space for the latch 163 to move.

[0096] Since an electric limit mechanism 170 is provided to serve as a secondary safeguard during the unlocking process, it is necessary to consider the situation in which the limit tongue 173 of the electric limit mechanism 170 cannot be retracted in the event of an accidental power outage. This situation will cause the limit tongue 173 to always be within the rotation radius of the first lock tongue 130, resulting in failure to unlock normally. When this situation occurs, people inside and outside can drive the limit tongue 173 to be forcibly retracted by twisting the forced unlocking rod 178. Specifically, the rotation of the forced unlocking rod 178 will drive the dial rod 177 to rotate accordingly. When the dial rod 177 conflicts with the pin 176, the pin 176 drives the pull rod 175, the sucked body 172, and the limit tongue 173 to be retracted, and the first spring 174 contracts. At this time, the smart door lock can be unlocked.

[0097] Example 2

[0098] This embodiment provides a smart door lock, which differs from Example 1 in that the second locking part 200 also includes an outer handle 202, which is semi-enclosed. The end of the outer handle 202 is fixedly connected to the end of the locking rod 201, and the locking rod 201 closes the open side of the outer handle 202. When the locking rod 201 is locked with the second lock tongue 140, the outer handle 202 surrounds the opening 112 of the bracket 110.

[0099] In this embodiment, the outer handle 202 provides a fulcrum for sliding the safety door, and on the other hand, it closes the opening 112 of the bracket 110 through its semi-enclosed shape. When the locking rod 201 is locked with the second lock tongue 140, the opening 112 is surrounded by the outer handle 202, which prevents outsiders from inserting their fingers or various tools into the bracket 110 through the opening 112 to rotate the second lock tongue 140 and then unlock it. This irregular unlocking method can easily cause finger jamming or increase the possibility of damage to the internal structure.

[0100] Example 3

[0101] This embodiment provides a smart door lock, which differs from Embodiment 1 in that an inner handle 300 fixed to the inner side of the door is further provided.

[0102] In this embodiment, the inner handle 300 can provide a gripping force point for a person to press the unlocking mechanism 160 . Specifically, the inside person bends four fingers to grip the inner handle 300 and presses the unlocking mechanism 160 with the thumb.

[0103] Example 4

[0104] This embodiment provides a smart door lock, which differs from Embodiment 1 in that a grille 150 connected to the bracket 110 is further provided. The grille 150 is provided with a plurality of holes for limiting the axial position of the first lock tongue 130 and the second lock tongue 140 on the core shaft 180. The first lock tongue 130 and the second lock tongue 140 are located in different holes.

[0105] In this embodiment, the grille 150 is used to limit the axial position of the first lock tongue 130 and the second lock tongue 140 on the core shaft 180 to prevent the first lock tongue 130 and the second lock tongue 140 from moving or twisting axially along the core shaft 180 and having an incorrect posture.

[0106] Example 5

[0107] This embodiment provides a smart door lock, which differs from Embodiment 1 in that a water hole 111 is provided at the bottom of the bracket 110 .

[0108] In this embodiment, the function of the water hole 111 is to provide a channel for the external drainage of the accumulated water inside the bracket 110. Since the construction environment is generally relatively harsh and there is less protection, during rainy days, the rainfall may drift into the inside of the bracket 110 and form accumulated water. In order to reduce the interference and damage of the accumulated water to various structures, therefore, the existence of the water hole 111 is quite necessary.

[0109] The above embodiments are only used to exemplarily illustrate the principles and effects of the present invention, rather than to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. An intelligent door lock, characterized in that: The door lock comprises a first locking portion (100) and a second locking portion (200), wherein the first locking portion (100) and the second locking portion (200) are locked with each other to close the door, and the first locking portion (100) and the second locking portion (200) are separated from each other to unlock the door; The second locking portion (200) is provided with a locking rod (201); The first lock portion (100) is provided with a bracket (110), the bracket (110) is installed with a limit switch (120), an unlocking mechanism (160), an electric limit mechanism (170), and a spindle (180), the spindle (180) is rotatably connected to the first lock tongue (130) and the second lock tongue (140), and the second lock tongue (140) is provided with a lock groove matched with the lock rod (201); The spindle (180) passes through the bracket (110), the first lock tongue (130) and the second lock tongue (140) are located inside the bracket (110), and the bracket (110) is provided with an opening (112) for the locking rod (201) to enter and exit at a position corresponding to the second lock tongue (140). When the locking rod (201) is locked with the second lock tongue (140), the detection head (121) of the limit switch (120) is triggered by the locking rod (201), and the upper end of the first lock tongue (130) is exposed outside the bracket (110); When the limiting tongue (173) of the electric limiting mechanism (170) is extended, it is located on the rotation path of the first lock tongue (130) about the spindle (180) and prevents the first lock tongue (130) from passing through; the rotation radius of the second lock tongue (140) is smaller than that of the first lock tongue (130) and there is no interference position between the second lock tongue (140) and the limiting tongue (173); when the limiting tongue (173) of the electric limiting mechanism (170) is in the retracted position, the restriction on the first lock tongue (130) is released; The first locking tongue (130) is provided with a paddle (132) for shifting the second locking tongue (140) to unlock the second locking tongue (140), and the unlocking mechanism (160) is connected to the paddle (132).

2. The intelligent door lock according to claim 1, wherein: The second locking portion (200) further includes an outer handle (202), which is in a semi-enclosed shape. The end of the outer handle (202) is fixedly connected to the end of the locking rod (201), and the locking rod (201) closes the open side of the outer handle (202). When the locking rod (201) is locked with the second locking tongue (140), the outer handle (202) surrounds the opening (112) of the bracket (110).

3. An intelligent door lock according to claim 1, characterized in that: The electric limiting mechanism (170) is provided with an electromagnet (171), an absorbed body (172), a first spring (174), a pull rod (175), a pin (176), a shift rod (177), and a forced unlocking rod (178); one end of the absorbed body (172) close to the electromagnet (171) is truncated cone-shaped and sleeved with the first spring (174); the other end of the absorbed body (172) is connected to the limiting tongue (173); the pull rod (175) is connected to the truncated cone-shaped end of the absorbed body (172) and passes through the electromagnet (171); The forced unlocking lever (178) is rotatably connected to the bracket (110) and passes through the bracket (110) at both ends. The lever (177) is fixedly connected to the forced unlocking lever (178). The pull rod (175) passes through the lever (177), and the pin (176) is inserted into the pull rod (175) to prevent the lever (177) from axially disengaging along the pull rod (175).

4. An intelligent door lock according to claim 1, characterized in that: The unlocking mechanism (160) is provided with a push rod (161) and a second spring (164). The second spring (164) is sleeved on the outer circle of the push rod (161). One end of the push rod (161) is hinged to the pressing piece (162). The first locking tongue (130) is provided with a tongue body (131). The dial (132) and the tongue body (131) are distributed in a corner shape. The dial (132) is also connected to the support block (133), and the support block (133) is provided with an oblong hole (134). The other end of the push rod (161) away from the pressing piece (162) is connected to the support block (133) through a pin (163). The pin (163) passes through the push rod (161) and the oblong hole (134).

5. The intelligent door lock according to claim 4, characterized in that: It further includes an inner handle (300) fixed to the inner side of the door.

6. The intelligent door lock according to claim 1, characterized in that: It further includes a grille (150) connected to the bracket (110). The grille (150) is provided with several holes for restricting the axial positions of the first locking tongue (130) and the second locking tongue (140) on the mandrel (180). The first locking tongue (130) and the second locking tongue (140) are located in different holes.

7. An intelligent door lock according to claim 1, characterized in that: The opening (112) of the bracket (110) is in a Y shape.

8. The intelligent door lock according to claim 7, characterized in that: The bottom of the bracket (110) is provided with a water hole (111).

9. An intelligent door lock according to claim 1, characterized in that: The limit switch (120) is a swing rod type limit switch.

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