Buffer type electric self-locking door closer

Abstract

The utility model provides a buffering type electric self-locking door closer which comprises a door pocket and a door closing component, a group of door bodies are arranged on the inner side of the door pocket, two groups of hinged shafts used for controlling the door bodies to be opened and closed are arranged on the right sides of the door bodies, and the door closing component used for electrically locking the door bodies is connected between the door pocket and the door bodies. The door closing component comprises a shell and an electromagnetic coil, and a group of lower fixing seats used for being fixedly connected with the door body are arranged at the rear ends of the left side and the right side of the shell. When a door is closed, a supporting spring pushes a telescopic supporting frame to stretch, guide teeth are meshed with an inner guide plate to control the reset speed, the buffering effect is achieved, an electromagnetic coil adsorbs a tooth holder locking mechanism after being powered on, and the door body is kept in an open state. And the support spring drives the embedding seat to return during power-off release.

Description

A buffer-type electric self-locking door closer Technical Field

[0001] This utility model belongs to the field of door closer technology and relates to a buffer-type electric self-locking door closer. Background Technology

[0002] Existing door closers, when unable to effectively cushion the impact, suffer from several drawbacks, including damage caused by the door impacting the door frame or frame accessories, noise issues, and potential safety risks to users. These drawbacks stem from the fact that the hydraulic or pneumatic system of the door closer cannot precisely control the closing speed of the door. This is especially true when the door is heavy or encounters external forces such as wind during closing, significantly reducing the cushioning effect. A conventional solution is to adjust the hydraulic or pneumatic valves inside the door closer to control the fluid flow rate, thereby regulating the cushioning effect. However, these methods are complex and require professional operation, and the results may not be ideal because the hydraulic or pneumatic system of the door closer performs differently under varying temperatures and wear levels, making it difficult to guarantee a stable, long-term cushioning effect. Therefore, there is an urgent need for a cushioned, electrically operated, self-locking door closer to address these problems. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a buffer-type electric self-locking door closer to solve the problems mentioned in the background art.

[0004] This utility model is achieved through the following technical solution: a buffer-type electric self-locking door closer, comprising: a door frame and a door closing component, wherein a set of door bodies is provided on the inner side of the door frame, and two sets of hinges for controlling the opening and closing of the door bodies are provided on the right side of the door bodies, and a door closing component for electrically locking the door bodies is connected between the door frame and the door bodies.

[0005] The door closing component includes a housing and an electromagnetic coil. The rear ends of the left and right sides of the housing are provided with a set of lower fixed seats for fixed connection with the door body. The housing is a hollow cylindrical structure. The top of the housing is provided with a set of movable slots for limiting the left and right movement of the insert. The upper end of the insert is provided with a set of lower movable arms for supporting the opening and closing of the door body. The upper end of the lower movable arms is provided with a set of upper movable arms for connecting to the door frame.

[0006] In a preferred embodiment, the upper movable arm is provided with a set of upper fixed seats for connecting and fixing with the door frame on the rear side, and a set of movable shafts for movable connection is provided between the upper movable arm and the lower movable arm. The seat is movably connected to the front side of the lower movable arm through a limit bearing.

[0007] In a preferred embodiment, the lower end of the insert is provided with a set of lower movable shafts for active guidance and movement. The outer side of the lower movable shaft is provided with a set of guide teeth for positioning and movement with the toothed seat. In actual use, when the relevant personnel open the door, they use external force to push the door body to rotate around the hinge axis, which drives the upper movable arm and the lower movable arm to move together through the movable shaft. The insert slides laterally along the movable groove of the outer shell. When the door is closed, the support spring pushes the telescopic support to extend. The guide teeth mesh with the inner guide plate to control the reset speed and achieve a buffering effect. After the electromagnetic coil is energized, it attracts the toothed seat locking mechanism to keep the door body in the open state. When the power is cut off and released, the support spring drives the insert to return to its position, and the lower movable shaft drives the movable arm system to close the door body, thereby controlling the opening and closing of the door body.

[0008] In a preferred embodiment, a set of tooth seats for meshing with the guide tooth is provided on the rear side of the guide tooth, and a set of limiting blocks for limiting the position of the lower movable shaft is provided on the left and right sides of the tooth seats, and a set of piston rings for movably engaging with the inner side of the outer shell is provided on the outer side of the limiting blocks.

[0009] In a preferred embodiment, a set of support springs for providing moving tension to the tooth seat is provided on the right side of the limiting block on the right side. The left side of the support spring is connected and fixed to the right end of the right limiting block on the right side. A set of positioning bearings for supporting the lower movable shaft is provided on the upper and lower sides respectively.

[0010] In a preferred embodiment, a telescopic support frame for restricting the movement of the lower movable shaft is provided on the right side of the two sets of positioning bearings. The telescopic support frame includes two sets of damping rods and a connecting frame.

[0011] In a preferred embodiment, the left sides of the two sets of damping rods are respectively connected and fixed to the right sides of the two sets of positioning bearings, and their right sides are connected and fixed to the left sides of the upper and lower ends of the connecting frame. The center position of the left side of the connecting frame is connected and fixed to the right side of the support spring.

[0012] In a preferred embodiment, the right side of the connecting frame has a rectangular cross-section, and a set of electromagnetic coils for providing magnetic restraint to the spring is provided on the right side of the connecting frame. The electromagnetic coils are connected to the external fire protection system via signal lines. When the electric self-locking door closer is running, the electromagnetic coils release magnetic force to lock after receiving a fire signal. The support spring pushes the damping rod to retract through the connecting frame. When the door is opened, the external force acts on the door body to drive the lower movable arm to swing. The lower movable shaft rotates under the constraint of the positioning bearing. The tooth seat slides along the guide tooth and compresses the support spring. When the door is closed, the support spring releases its stored energy. The tooth seat reset speed is controlled by the limit block limited by the piston ring. The damping rod provides progressive buffer resistance. In an emergency, the fire signal cuts off the current of the electromagnetic coils, and the connecting frame immediately releases the magnetic constraint to achieve rapid release. At the same time, it is linked with the fire protection system to ensure that the emergency passage is unobstructed.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are as follows: When relevant personnel open the door, they use external force to push the door body to rotate around the hinge axis, which drives the upper and lower movable arms to move together through the movable shaft. The insert slides laterally along the movable groove of the outer shell. When the door is closed, the support spring pushes the telescopic support to extend. The guide tooth meshes with the inner guide plate to control the reset speed and achieve a buffering effect. After the electromagnetic coil is energized, it attracts the tooth seat locking mechanism to keep the door body in the open state. When the power is cut off and released, the support spring drives the insert to return to its position, and the lower movable shaft drives the movable arm system to close the door body, thereby controlling the opening and closing of the door body.

[0014] When the electric self-locking door closer is running, the electromagnetic coil releases magnetic force to lock after receiving a fire signal. The support spring pushes the damping rod to retract through the connecting frame. When the door is opened, the external force acts on the door body to drive the lower movable arm to swing. The lower movable shaft rotates under the constraint of the positioning bearing. The tooth seat slides along the guide tooth and compresses the support spring. When the door is closed, the support spring releases its stored energy. The limit block limited by the piston ring controls the tooth seat's reset speed. The damping rod provides progressive buffer resistance. In an emergency, the fire signal cuts off the current to the electromagnetic coil, and the connecting frame immediately releases the magnetic constraint to achieve rapid release. At the same time, it is linked with the fire department to ensure that the emergency passage is unobstructed. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 is a rear view of the structure of a buffer-type electric self-locking door closer according to this utility model.

[0017] Figure 2 is a rear view of the internal structure of the door closing component in a buffer-type electric self-locking door closer according to this utility model.

[0018] Figure 3 is a schematic diagram of the left side view of the guide tooth and tooth seat in a buffer-type electric self-locking door closer according to the present invention.

[0019] In the diagram: 100 - door frame, 110 - door body, 120 - hinge pin, 130 - door closing component;

[0020] 13a-Outer shell, 13b-Lower fixed seat, 13c-Upper fixed seat, 13d-Upper movable arm, 13e-Modular shaft, 13f-Lower movable arm, 13g-Embedded seat, 13h-Lower movable shaft, 13i-Guide tooth, 13j-Inner guide plate, 13k-Gear seat, 13l-Support spring, 13m-Telescopic support frame, 13n-Electromagnetic coil. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please refer to Figures 1-3, as the first embodiment of this utility model:

[0023] A buffer-type electric self-locking door closer includes: a door frame 100 and a door closing component 130. A set of door bodies 110 is provided on the inner side of the door frame 100. Two sets of hinge pins 120 for controlling the opening and closing of the door bodies 110 are provided on the right side of the door bodies 110. The door closing component 130 for electrically locking the door bodies 110 is connected between the door frame 100 and the door bodies 110.

[0024] The door closing component 130 includes a housing 13a and an electromagnetic coil 13n. The rear ends of the left and right sides of the housing 13a are provided with a set of lower fixed seats 13b for fixed connection with the door body 110. The housing 13a is a hollow cylindrical structure. The top of the housing 13a is provided with a set of movable grooves for limiting the left and right movement of the insert 13g. The upper end of the insert 13g is provided with a set of lower movable arms 13f for supporting the opening and closing of the door body 110. The upper end of the lower movable arms 13f is provided with a set of upper movable arms 13d for connecting to the door frame 100.

[0025] The upper movable arm 13d is provided with an upper fixed seat 13c for connecting and fixing with the door frame 100. The upper movable arm 13d and the lower movable arm 13f are provided with a movable shaft 13e for movable connection. The insert 13g is movably connected to the front side of the lower movable arm 13f through a limit bearing.

[0026] The lower end of the mounting base 13g is provided with a set of lower movable shafts 13h for active guidance and movement. The outer side of the lower movable shafts 13h is provided with a set of guide teeth 13i for positioning and movement with the toothed seat 13k. In actual use, when the relevant personnel open the door, they use external force to push the door body 110 to rotate around the hinge shaft 120, which drives the upper movable arm 13d and the lower movable arm 13f to move together through the movable shaft 13e. The mounting base 13g slides laterally along the movable groove of the outer shell 13a. When the door is closed, the support spring 13l pushes the telescopic support 13m to extend. The guide teeth 13i mesh with the inner guide plate 13j to control the reset speed and achieve a buffering effect. After the electromagnetic coil 13n is energized, it attracts the locking mechanism of the toothed seat 13k, keeping the door body 110 in the open state. When the power is cut off and released, the support spring 13l drives the mounting base 13g to return to its original position, and the lower movable shaft 13h drives the movable arm system to close the door body 110, thereby controlling the opening and closing of the door body 110.

[0027] Please refer to Figures 1-3, as a second embodiment of this utility model: Based on the description in the above embodiments, further...

[0028] A set of tooth seats 13k for meshing with the guide tooth 13i is provided on the rear side. A set of limiting blocks for limiting the position of the lower movable shaft 13h is provided on the left and right sides of the tooth seats 13k. A set of piston rings for movable engagement with the inner side of the outer shell 13a is provided on the outer side of the limiting blocks.

[0029] A set of support springs 13l is provided on the right side of the right limit block to provide moving tension to the tooth seat 13k. The left side of the support springs 13l is connected and fixed to the right end of the right limit block. A set of positioning bearings for supporting the lower movable shaft 13h is provided on the upper and lower sides respectively.

[0030] On the right side of the two sets of positioning bearings, there is a telescopic support 13m for restricting the movement of the lower movable shaft 13h. The telescopic support 13m includes two sets of damping rods and a connecting frame.

[0031] The left sides of the two sets of damping rods are respectively connected and fixed to the right sides of the two sets of positioning bearings, and their right sides are connected and fixed to the left sides of the upper and lower ends of the connecting frame. The center position of the left side of the connecting frame is connected and fixed to the right side of the support spring 13l.

[0032] The right side of the connecting frame has a rectangular cross-section, and a set of electromagnetic coils 13n for providing magnetic limit to the spring is provided on the right side of the connecting frame. The electromagnetic coils 13n are connected to the external fire protection system through signal lines. When the electric self-locking door closer is running, the electromagnetic coils 13n release magnetic force to lock after receiving the fire signal. The support spring 13l pushes the damping rod to retract through the connecting frame. When the door is opened, the external force acts on the door body 110 to drive the lower movable arm 13f to swing. The lower movable shaft 13h rotates under the constraint of the positioning bearing. The tooth seat 13k slides along the guide tooth 13i and compresses the support spring 13l. When the door is closed, the support spring 13l releases its stored energy. The limit block limited by the piston ring controls the reset speed of the tooth seat 13k. The damping rod provides progressive buffer resistance. In an emergency, the fire signal cuts off the current of the electromagnetic coils 13n. The connecting frame immediately releases the magnetic constraint to achieve rapid release. At the same time, it is linked with the fire protection system to ensure that the emergency passage is unobstructed.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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. A buffer-type electric self-locking door closer, comprising: A door frame (100) and a closing component (130) are provided. A door body (110) is provided inside the door frame (100). Two sets of hinges (120) for controlling the opening and closing of the door body (110) are provided on the right side of the door body (110). The door frame (100) and the door body (110) are connected by a closing component (130) for electrically locking the door body (110). The closing component (130) includes a housing (13a) and an electromagnetic coil (13n). 3a) A set of lower fixed seats (13b) for fixed connection with the door body (110) is provided at the rear ends on the left and right sides. The outer shell (13a) is a hollow columnar structure. A set of movable slots for limiting the left and right movement of the insert (13g) is provided at the top of the outer shell (13a). A set of lower movable arms (13f) for supporting the opening and closing of the door body (110) is provided at the upper end of the insert (13g). A set of upper movable arms (13d) for connecting to the door frame (100) is provided at the upper end of the lower movable arms (13f).

2. The buffer-type electric self-locking door closer according to claim 1, characterized in that: The upper movable arm (13d) is provided with a set of upper fixed seats (13c) for connecting and fixing with the door frame (100) on the rear side. The upper movable arm (13d) and the lower movable arm (13f) are provided with a set of movable shafts (13e) for movable connection. The insert (13g) and the front side of the lower movable arm (13f) are movably connected by a limit bearing.

3. A buffer-type electric self-locking door closer according to claim 2, characterized in that: The lower end of the insert (13g) is provided with a set of lower movable shafts (13h) for active guiding movement, and the outer side of the lower movable shafts (13h) is provided with a set of guide teeth (13i) for positioning and moving with the tooth seat (13k).

4. A buffer-type electric self-locking door closer according to claim 3, characterized in that: The guide tooth (13i) is provided with a set of tooth seats (13k) for meshing with it. The tooth seats (13k) are provided with a set of limiting blocks on the left and right sides for limiting the position of the lower movable shaft (13h). The limiting blocks are provided with a set of piston rings for movable engagement with the inner side of the outer shell (13a).

5. A buffer-type electric self-locking door closer according to claim 4, characterized in that: The right side of the limiting block is provided with a set of support springs (13l) for providing moving tension to the tooth seat (13k). The left side of the support springs (13l) is connected and fixed to the right end of the right limiting block. The upper and lower sides of the lower movable shaft (13h) are respectively provided with a set of positioning bearings for supporting it.

6. A buffer-type electric self-locking door closer according to claim 5, characterized in that: On the right side of the two sets of positioning bearings, there is a set of telescopic support (13m) for restricting the movement of the lower movable shaft (13h). The telescopic support (13m) includes two sets of damping rods and a set of connecting frames.

7. A buffer-type electric self-locking door closer according to claim 6, characterized in that: The two sets of damping rods are respectively connected and fixed to the right side of the two sets of positioning bearings on the left side, and their right side is connected and fixed to the left side of the upper and lower ends of the connecting frame. The center position of the left side of the connecting frame is connected and fixed to the right side of the support spring (13l).

8. A buffer-type electric self-locking door closer according to claim 7, characterized in that: The right side of the connecting frame has a rectangular cross-section, and a set of electromagnetic coils (13n) for providing magnetic limiting for the spring is provided on the right side of the connecting frame. The electromagnetic coils (13n) are connected to the external fire protection system through signal lines.

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