Automatic door closing buffer device of intelligent door lock
By installing a power mechanism and roller mechanism at any position on the door frame, the intelligent door lock automatic closing buffer device solves the problems of existing devices requiring electricity and being affected by friction, thereby improving the speed and efficiency of automatic closing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN XINZHENXIN HARDWARE PRODUCTS CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-05
AI Technical Summary
Existing smart door locks typically have automatic closing buffer devices installed above the door frame, which require electricity and a monitor, increasing operating costs. Furthermore, these devices are affected by resistance and friction during startup, resulting in slow automatic closing speeds and difficulty for users to open the door.
An intelligent door lock automatic closing buffer device that can be installed at any position on the door frame was designed. It adopts a power mechanism and a roller mechanism. After being subjected to force by the support rod, it automatically resets. The automatic closing buffer is achieved by the meshing connection of gears and rotating cylinder, which reduces friction and improves speed and flexibility.
It achieves an automatic door closing buffer effect that can be installed at any position on the door frame. The rotation of the support rod and rotating cylinder is more flexible, which improves the speed and efficiency of automatic door closing and reduces the user's door opening resistance.
Smart Images
Figure CN224200466U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of door closer technology, and in particular to an automatic door closing buffer device for intelligent door locks. Background Technology
[0002] The automatic closing buffer device of a smart door lock is often called an "automatic door closer" or "door closer". It is a hydraulic device similar to a spring on the door. When the door is opened, it can be compressed and then released to automatically close the door, just like a spring door. It can ensure that the door is accurately and promptly closed to the initial position after being opened.
[0003] According to research, existing smart door lock automatic closing buffer devices are generally installed above the door frame and require electricity and a monitor to start, which increases their operating costs. At the same time, the resistance and friction during the start-up of the door closer will affect the speed of automatic closing, and users will feel that it is difficult to open the door.
[0004] Therefore, those skilled in the art have provided an automatic closing buffer device for smart door locks to solve the problems mentioned in the background art. Utility Model Content
[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an intelligent door lock automatic closing buffer device. This device is simple to use and can be installed at any position on the door frame to achieve an automatic closing buffer effect. At the same time, the reset process is flexible and quick, thereby improving the speed of automatic closing buffer and thus enhancing the practicality and efficiency of the device.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] An intelligent door lock automatic closing buffer device includes a housing and a connecting arc plate. The number of housings is two, and both housings are fixedly installed at the upper and lower ends of the connecting arc plate. A power mechanism is installed inside the connecting arc plate, and a roller mechanism is installed on the power mechanism.
[0008] The power mechanism includes a rotating cylinder and a gear. The rotating cylinder is rotatably disposed inside the connecting arc plate. The gear is snapped into the rotating cylinder. A movable screw is slidably disposed inside the gear. Both housings have chambers. Movable disks are fixedly disposed at the upper and lower ends of the movable screw, respectively, extending into the chambers. A support rod is fixedly disposed on one side of the rotating cylinder. A movable wheel is fixedly disposed on the side of the support rod away from the rotating cylinder.
[0009] Through the above technical solution, the power mechanism enables the support rod to automatically reset after being subjected to force, thereby achieving an automatic door closing buffer effect. The support rod is subjected to force and rotates synchronously with the rotating cylinder. At the same time, the gear is connected by the internal locking teeth and rotates synchronously with the rotating cylinder. Subsequently, the moving screw moves upward due to the sliding effect of the limiting block inside the limiting groove, and at the same time, it applies internal pressure to the first and second springs. Conversely, when the support rod loses external force, the moving screw is moved downward by the reaction force of the first and second springs, causing the gear and the rotating cylinder to rotate in opposite directions, thereby resetting the support rod and improving the practicality of the device.
[0010] Furthermore, the roller mechanism includes protruding columns and rollers. There are two protruding columns and multiple rollers. The two protruding columns are fixedly installed at the lower end of the housing and located inside the connecting arc plate. The multiple rollers are rotatably installed inside the corresponding protruding columns. Anti-detachment cylinders are fixedly installed at both the upper and lower ends of the rotating cylinder. The two anti-detachment cylinders are rotatably installed on the corresponding protruding columns.
[0011] Through the above technical solution, the roller mechanism allows the support rod to rotate and reset flexibly and smoothly, thereby improving the speed of automatic door closing buffer. When the anti-detachment cylinder rotates on the convex column, the friction with the surface of the convex column is reduced by the rotation of the roller, which makes the support rod and the rotating cylinder rotate more flexibly, thereby improving the efficiency of the automatic door closing buffer of the device.
[0012] Furthermore, the inner wall of the rotating cylinder is provided with multiple internal locking teeth at equal intervals, and the multiple internal locking teeth are respectively meshed with gears;
[0013] Through the above technical solution, by engaging the internal locking teeth with the gears, the rotating cylinder can be driven by the external force of the support rod to rotate the gears synchronously.
[0014] Furthermore, a first spring is fixedly installed on the upper end of the movable disk at its upper end, and a second spring is sleeved and connected on the upper end of the movable disk at its lower end and located on the movable screw.
[0015] The above technical solution enables the support rod to automatically reset when the external force is removed, thereby achieving the effect of automatic door closing.
[0016] Furthermore, limit blocks are fixedly provided on both sides of the two movable disks, and limit grooves are opened inside the two housings and on both sides of the inner wall of the cavity, and the four limit blocks slide in the corresponding limit grooves respectively.
[0017] With the above technical solution, by having the limiting blocks slide inside the corresponding limiting grooves, the moving screw can move up and down under the action of gear rotation.
[0018] Furthermore, each of the two housings is fixedly provided with a mounting base at its upper end and near its rear end;
[0019] The above technical solution allows the housing to be installed at any position on the door frame via the mounting base, thereby improving its ease of use.
[0020] Furthermore, both of the protruding pillars have grooves inside, and multiple shafts are fixedly arranged at equal intervals inside the two protruding pillars and at the grooves. The multiple rollers are respectively rotatably mounted on the corresponding shafts.
[0021] The above technical solution uses rollers that are rotatably mounted on corresponding shafts to prevent them from colliding and rubbing against each other during rotation, thereby improving the stability of their rotation.
[0022] This utility model has the following beneficial effects:
[0023] 1. This utility model proposes an intelligent door lock automatic closing buffer device. This device, through a power mechanism, enables the support rod to automatically reset after being subjected to force, thereby achieving an automatic closing buffer effect. The support rod is subjected to force and rotates synchronously with the rotating cylinder. At the same time, the gear is connected by the meshing of the internal locking teeth and rotates synchronously with the rotating cylinder. Subsequently, the moving screw moves upward due to the sliding effect of the limiting block inside the limiting groove, and at the same time, it applies internal pressure to the first spring and the second spring. Conversely, when the support rod loses external force, the moving screw is subjected to the reaction force of the first spring and the second spring and moves downward, causing the gear and the rotating cylinder to rotate in opposite directions, thereby resetting the support rod and improving the practicality of the device.
[0024] 2. The present invention proposes an intelligent door lock automatic closing buffer device. The device uses a roller mechanism to make the support rod flexible and quick during rotation and reset, thereby improving the speed of automatic closing buffer. When the anti-detachment cylinder rotates on the convex column, the friction with the surface of the convex column is reduced by the rotation of the roller, which makes the support rod and the rotating cylinder rotate more flexibly, thereby improving the efficiency of the automatic closing buffer of the device.
[0025] 3. The present invention proposes an intelligent door lock automatic closing buffer device. This device is simple to use and can be installed at any position on the door frame to achieve an automatic closing buffer effect. At the same time, the reset process is flexible and quick, thereby improving the speed of automatic closing buffer and thus improving the practicality and efficiency of the device. Attached Figure Description
[0026] Figure 1 This is a perspective view of an intelligent door lock automatic closing buffer device proposed in this utility model;
[0027] Figure 2 This is a schematic diagram of the housing structure of an intelligent door lock automatic closing buffer device proposed in this utility model;
[0028] Figure 3 This is a schematic diagram of the rotating cylinder structure of an automatic closing buffer device for an intelligent door lock proposed in this utility model;
[0029] Figure 4 This is a schematic diagram of the power mechanism structure of an intelligent door lock automatic closing buffer device proposed in this utility model;
[0030] Figure 5 for Figure 2 Enlarged view of point A in the middle;
[0031] Figure 6 for Figure 2 Enlarged view of point B in the middle.
[0032] Legend:
[0033] 1. Housing; 2. Connecting arc plate; 3. Mounting base; 4. Power mechanism; 401. Rotating cylinder; 402. Gear; 403. Internal locking gear; 404. Moving screw; 405. Moving disc; 406. First spring; 407. Second spring; 408. Limiting block; 409. Limiting groove; 410. Chamber; 411. Support rod; 412. Moving wheel; 5. Roller mechanism; 501. Protruding column; 502. Roller; 503. Groove; 504. Shaft; 505. Anti-detachment cylinder. Detailed Implementation
[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0035] Reference Figure 1-5 The present invention provides a specific embodiment of an intelligent door lock automatic closing buffer device, comprising a housing 1 and a connecting arc plate 2. There are two housings 1, both of which are fixedly disposed at the upper and lower ends of the connecting arc plate 2. A power mechanism 4 is disposed inside the connecting arc plate 2, and a roller mechanism 5 is disposed on the power mechanism 4. Mounting seats 3 are fixedly disposed at the upper end and near the rear end of both housings 1. The housings 1 can be installed at any position on the door frame through the mounting seats 3 to improve the convenience of use.
[0036] The power mechanism 4 includes a rotating cylinder 401 and a gear 402. The rotating cylinder 401 is rotatably disposed inside the connecting arc plate 2, and the gear 402 is engaged inside the rotating cylinder 401. A movable screw 404 is slidably disposed inside the gear 402. Both housings 1 have chambers 410 inside. Movable discs 405 are fixedly disposed at the upper and lower ends of the movable screw 404 at the chambers 410, respectively. A support rod 411 is fixedly disposed on one side of the rotating cylinder 401, and a movable wheel 412 is fixedly disposed on the side of the support rod 411 away from the rotating cylinder 401. The power mechanism 4 can drive the support rod 401 to rotate. 11. After being subjected to force, it automatically resets, thus achieving an automatic door closing buffer effect. The support rod 411 is subjected to force, causing it to rotate synchronously with the rotating cylinder 401. Simultaneously, the gear 402 is engaged with the rotating cylinder 401 by the internal locking teeth 403, causing it to rotate synchronously with the rotating cylinder 401. Subsequently, the moving screw 404 moves upward due to the sliding effect of the limiting block 408 within the limiting groove 409, simultaneously applying internal pressure to the first spring 406 and the second spring 407. Conversely, when the support rod 411 loses external force, the moving screw 404 moves downward due to the reaction force of the first spring 406 and the second spring 407, thus... The gear 402 and the rotating cylinder 401 rotate in opposite directions to reset the support rod 411, thereby improving the practicality of the device. Multiple internal locking teeth 403 are fixedly arranged at equal intervals on the inner wall of the rotating cylinder 401. These internal locking teeth 403 mesh with the gear 402 respectively. Through the meshing of the internal locking teeth 403 with the gear 402, the rotating cylinder 401 can be driven by the external force of the support rod 411 to rotate the gear 402 synchronously. A first spring 406 is fixedly installed on the upper end of the movable disk 405 near its upper end, and a spring 406 is fixed on the upper end of the movable disk 405 near its lower end and located on the moving screw 4. A second spring 407 is sleeved on 04. The first spring 406 and the second spring 407 can automatically reset the support rod 411 when the external force is lost, so as to achieve the effect of automatic door closing. Limiting blocks 408 are fixedly installed on both sides of the two moving disks 405. Limiting grooves 409 are opened inside the two housings 1 and on both sides of the inner wall of the cavity 410. The four limiting blocks 408 slide in the corresponding limiting grooves 409 respectively. By the limiting blocks 408 sliding in the corresponding limiting grooves 409 respectively, the moving screw 404 can move up and down under the action of the gear 402.
[0037] Reference Figure 1 , 2The roller mechanism 5 includes two protrusions 501 and multiple rollers 502. The two protrusions 501 are fixedly installed at the lower end of the housing 1 and located inside the connecting arc plate 2. The multiple rollers 502 are rotatably installed inside their respective protrusions 501. Anti-detachment cylinders 505 are fixedly installed at both the upper and lower ends of the rotating cylinder 401. Two anti-detachment cylinders 505 are rotatably installed on their respective protrusions 501. The roller mechanism 5 allows the support rod 411 to rotate and reset flexibly and smoothly, thereby improving the automatic door closing buffer speed. The anti-detachment cylinders 505 are used to prevent the support rod 411 from detaching and resetting. When the column 501 rotates, the rotation of the roller shaft 502 reduces the friction with the surface of the column 501, thereby making the support rod 411 and the rotating cylinder 401 rotate more flexibly, thus improving the efficiency of the automatic door closing buffer of the device. The two columns 501 are provided with grooves 503 inside, and multiple shafts 504 are fixedly arranged at equal intervals inside the two columns 501 and located at the grooves 503. The multiple roller shafts 502 are respectively rotatably set on the corresponding shafts 504. By rotatably setting the roller shafts 502 on the corresponding shafts 504, the roller shafts 502 are prevented from colliding and rubbing against each other when rotating, thereby improving the stability of their rotation.
[0038] Working principle: When using the automatic closing buffer device of this smart door lock, first, install the mounting base 3 in a suitable position on the door frame and make the moving wheel 412 fit against the door body. Then, push the door to make the support rod 411 rotate synchronously with the rotating cylinder 401. At the same time, the gear 402 is connected by the meshing of the internal locking teeth 403 and rotates synchronously with the rotating cylinder 401. Subsequently, the moving screw 404 moves upward due to the sliding effect of the limiting block 408 inside the limiting groove 409, and at the same time, it applies internal pressure to the first spring 406 and the second spring 407. Conversely, the support rod 411 loses its position. When the external force is removed, the moving screw 404 is moved downward by the reaction force of the first spring 406 and the second spring 407, causing the gear 402 and the rotating cylinder 401 to rotate in opposite directions, so that the support rod 411 automatically resets to achieve the automatic door closing buffering effect. However, when the anti-detachment cylinder 505 rotates on the protrusion 501, the friction with the surface of the protrusion 501 can be reduced by the rotation of the roller shaft 502, thereby making the support rod 411 and the rotating cylinder 401 rotate more flexibly, so as to improve the speed of automatic door closing buffering, thereby improving the practicality of the device and the efficiency of automatic door closing buffering.
[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An automatic closing buffer device for an intelligent door lock, comprising a housing (1) and a connecting arc plate (2), characterized in that: There are two housings (1), and both housings (1) are fixedly installed at the upper and lower ends of the connecting arc plate (2). A power mechanism (4) is installed inside the connecting arc plate (2), and a roller mechanism (5) is installed on the power mechanism (4). The power mechanism (4) includes a rotating cylinder (401) and a gear (402). The rotating cylinder (401) is rotatably disposed inside the connecting arc plate (2). The gear (402) is snapped into the rotating cylinder (401). A movable screw (404) is slidably disposed inside the gear (402). Both housings (1) have a cavity (410) inside. The movable screw (404) extends to the cavity (410) at both ends and is fixedly disposed with a movable disk (405). A support rod (411) is fixedly disposed on one side of the rotating cylinder (401). A movable wheel (412) is fixedly disposed on the side of the support rod (411) away from the rotating cylinder (401).
2. The intelligent door lock automatic closing buffer device according to claim 1, characterized in that: The roller mechanism (5) includes a protrusion (501) and a roller (502). There are two protrusions (501) and multiple rollers (502). The two protrusions (501) are fixedly installed at the lower end of the housing (1) and located inside the connecting arc plate (2). The multiple rollers (502) are rotatably installed inside the corresponding protrusions (501). The upper and lower ends of the rotating cylinder (401) are fixedly provided with anti-detachment cylinders (505). The two anti-detachment cylinders (505) are rotatably installed on the corresponding protrusions (501).
3. The intelligent door lock automatic closing buffer device according to claim 1, characterized in that: The inner wall of the rotating cylinder (401) is provided with multiple inner locking teeth (403) at equal intervals, and the multiple inner locking teeth (403) are respectively meshed with the gear (402).
4. The intelligent door lock automatic closing buffer device according to claim 1, characterized in that: A first spring (406) is fixedly installed on the upper end of the movable disk (405) at its upper end, and a second spring (407) is sleeved and connected on the upper end of the movable disk (405) at its lower end and on the movable screw (404).
5. The intelligent door lock automatic closing buffer device according to claim 1, characterized in that: Limiting blocks (408) are fixedly provided on both sides of the two movable disks (405), and limiting grooves (409) are opened inside the two housings (1) and on both sides of the inner wall of the cavity (410). The four limiting blocks (408) slide in the corresponding limiting grooves (409).
6. The intelligent door lock automatic closing buffer device according to claim 1, characterized in that: Mounting bases (3) are fixedly provided on the upper end and near the rear end of both housings (1).
7. The intelligent door lock automatic closing buffer device according to claim 2, characterized in that: Both of the protruding pillars (501) have grooves (503) inside. Both of the protruding pillars (501) have multiple shafts (504) fixedly arranged at equal intervals inside and at the grooves (503). The multiple rollers (502) are respectively rotatably arranged on the corresponding shafts (504).