Protective door with heaven and earth bearings
By introducing top and bottom bearings, electric telescopic rods, and limit mechanisms into the protective door, the problems of door closing force attenuation and sagging have been solved, enabling diversified operation and ventilation of the door panel, and improving durability and functional versatility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-03-24
AI Technical Summary
The closing force of existing security door hinges decreases with repeated use, leading to door panel sagging, reduced durability, and limited functionality.
It adopts a top and bottom bearing structure, combined with an electric telescopic rod and a limiting mechanism. It enables diverse operation of the door panel through a sliding fixed plate and a baffle, reduces the number of rotations, enhances support, and is equipped with ventilation slots and magnetic locking.
It effectively slows down door panel sagging, extends service life, provides ventilation, and enhances safety and practicality.
Smart Images

Figure CN224032520U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of protective door production and processing, and concretely relates to a protective door with a top-and-bottom bearing. BACKGROUND
[0002] A protective door is a kind of door with special protection function, and in residential buildings, office buildings, shopping malls and other civil buildings, fireproof doors and security doors are common protective door types, which protect the safety of indoor personnel and property, and the existing protective door usually comprises a door leaf, a door frame and a hinge, the door leaf and the door frame are movably connected through the hinge, the existing top-and-bottom bearing hinge is installed at the top and bottom of the door frame, and the door and the door frame are connected by setting a shaft and a rotating part at the upper and lower ends of the door, but the top-and-bottom bearing hinge is similar to the ordinary spring hinge, the door closing force thereof will decrease with the increase of the number of door closing times, the durability thereof will decrease after long-time use, and the door plate will also sag due to gravity, and the function is single, therefore, the utility model discloses a protective door with a top-and-bottom bearing. SUMMARY
[0003] The utility model provides a protective door with a top-and-bottom bearing to solve the defects in the prior art.
[0004] The utility model discloses a protective door with a top-and-bottom bearing, which is characterized by the following technical scheme:
[0005] A protective door with a top-and-bottom bearing, comprising a door frame, the door frame is fixedly embedded in a wall body, a door plate is rotatably installed on the upper and lower sides of the door frame through a top-and-bottom bearing, a recess is formed in the door plate, a fixed plate is slidably installed on the recess, a plurality of ventilation grooves are formed in the fixed plate, a baffle is rotatably arranged on each ventilation groove, a limiting mechanism for limiting the rotation of the baffle is arranged on the fixed plate, a plurality of electric telescopic rods are fixedly arranged on the door plate, a plurality of insertion grooves are formed in the door frame in correspondence with the electric telescopic rods, and the electric telescopic rods are inserted and matched with the corresponding insertion grooves.
[0006] The limiting mechanism comprises a worm gear, a rotating shaft is fixedly arranged on each baffle, the two ends of the rotating shaft are rotatably installed on the fixed plate through bearings, a hidden groove is formed in the fixed plate, one end of the rotating shaft penetrates through the hidden groove and is fixedly provided with a worm gear, a same worm is meshingly and matchingly arranged on one side of the worm gear, the worm is rotatably installed in the hidden groove, one end of the worm is fixedly connected with a driving shaft of a motor, and the motor is fixedly installed in the hidden groove.
[0007] The protective door with a top-and-bottom bearing is characterized in that sliding grooves are formed in the upper and lower sides of the door plate, and sliding blocks are slidably arranged in the sliding grooves and are fixedly installed on the fixed plate.
[0008] The protective door with the heaven and earth bearing has a first recess formed on the door frame, a first magnetic block fixed on the inner wall of the first recess, and a second magnetic block fixed on the fixed plate and capable of being inserted into the first recess.
[0009] The protective door with the heaven and earth bearing has a handle fixed on the fixed plate.
[0010] The protective door with the heaven and earth bearing has a control switch fixed on the door plate and capable of controlling rotation of the drive shaft of the motor and elongation of the electric telescopic rod.
[0011] The protective door with the heaven and earth bearing has a handle fixed on the fixed plate. BRIEF DESCRIPTION OF DRAWINGS
[0012] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.
[0013] Figure 1 The present application is a structural schematic diagram; Figure 2 The present application is a structural schematic diagram; Figure 1 The present application is a structural schematic diagram; Figure 3 The present application is a structural schematic diagram; Figure 4 The present application is a structural schematic diagram; Figure 5 The present application is a structural schematic diagram; Figure 1 The present application is a structural schematic diagram.
[0014] The protective door with the heaven and earth bearing has a first recess formed on the door frame, a first magnetic block fixed on the inner wall of the first recess, and a second magnetic block fixed on the fixed plate and capable of being inserted into the first recess. DETAILED DESCRIPTION
[0015] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0016] A protective door with heaven and earth bearing, as shown in Figure 1 、 2 , 3, 4, 5, comprising door frame 1, door frame 1 is fixedly embedded in the wall, the upper and lower sides of door frame 1 are rotatably installed door plate 3 through heaven and earth bearing 2, the heaven and earth bearing comprises a base and a top seat, the top seat is rotatably installed on the base, the base of heaven and earth bearing 2 is fixedly installed on door frame 1, the top seat of heaven and earth bearing 2 is fixedly installed on door plate 3, the recess 4 is formed in the door plate 3, the fixed plate 5 is slidably installed on the recess 4, a plurality of ventilation grooves 6 are formed in the fixed plate 5, the baffle 7 is rotatably arranged on the ventilation groove 6, the limiting mechanism for limiting the rotation of the baffle 7 is arranged on the fixed plate 5, a plurality of electric telescopic rods 8 are fixedly arranged on the door plate 3, the upper and lower sides of the door plate 3 are respectively provided with two electric telescopic rods 8, and the upper and lower sides are symmetrically arranged, a plurality of insertion grooves 9 are formed in the door frame 1, and the electric telescopic rod 8 is inserted and matched with the corresponding insertion groove 9. The utility model has the advantages of simple structure, ingenious design, through the fixed plate 5 which can be slidably opened on the door plate 3, the problem of sagging and durability reduction caused by rotating the door plate 3 at unnecessary time is reduced, ventilation and air permeability through the ventilation groove 6 are also achieved, market demand is met, and the utility model is suitable for promotion. When the utility model is used, the electric telescopic rod 8 inserted into the insertion groove 9 can support the whole door plate 3, share the influence of the whole gravity of the door plate 3 on the heaven and earth bearing 2, further slow down the sagging problem of the door plate 3 after long time use; and in daily use, pedestrians can pass through by sliding the fixed plate 5, and only when large goods are transported, the whole door plate 3 needs to be rotated, so that the problem of durability reduction caused by reducing the number of closing doors can be slowed down; in the closed state, the baffle 7 is driven to rotate ninety degrees by the limiting mechanism, the ventilation groove 6 can be used as a ventilation hole, small cats and dogs can also pass through smoothly, and large animals from outside are prevented from entering, and the utility model has multiple functions.
[0017] Specifically, as shown in the drawings, the limiting mechanism comprises a worm wheel 20, the baffle 7 is respectively provided with a rotating shaft 21, the two ends of the rotating shaft 21 are respectively rotatably installed on the fixed plate 5, the fixed plate 5 is provided with a dark groove 22, one end of the rotating shaft 21 penetrates through the dark groove 22 and is respectively provided with the worm wheel 20, one side of the worm wheel 20 is engaged and matched with the same worm 23, the worm 23 is rotatably installed in the dark groove 22, one end of the worm 23 is fixedly connected with the driving shaft of the motor 24, and the motor 24 is fixedly installed in the dark groove 22. The driving shaft of the motor 24 is controlled to rotate, so that the worm 23 is driven to rotate, the worm wheel 20 and the rotating shaft 21 are driven to rotate, and the baffle 7 is driven to rotate to open the ventilation slot 6, so that the indoor ventilation is facilitated, the cat and the dog can enter and exit, and the large animals are prevented from entering the house.
[0018] Specifically, as shown in the drawings, the upper and lower sides of the door plate 3 are provided with sliding grooves 30, and the sliding grooves 30 are respectively provided with sliding blocks 31 which are fixedly installed on the fixed plate 5. When the fixed plate 5 is pulled to slide, the sliding blocks 31 are driven to slide in the sliding grooves 30.
[0019] Further, as shown in the drawings, the door frame 1 is provided with a first recess 40, the inner wall of the first recess 40 is fixedly provided with a first magnetic block, the fixed plate 5 is fixedly provided with a second magnetic block 41 which can be inserted and matched with the first recess 40, and the second magnetic block 41 can be attracted together close to the first magnetic block. The second magnetic block 41 is inserted into the first recess 40, so that the fixed plate 5 can be locked, and the fixed plate 5 can be pulled to the left side by force when being opened.
[0020] Further, as shown in the drawings, the fixed plate 5 is fixedly provided with a handle 50. The handle 50 is pulled to facilitate pulling the fixed plate 5, so that labor is saved.
[0021] Further, as shown in the drawings, the door plate 3 is fixedly provided with a control switch which controls the rotation of the driving shaft of the motor 24 and the extension of the electric telescopic rod 8. The control switch can quickly control the start and stop of the motor 24 and the extension and shortening of the electric telescopic rod 8.
[0022] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A security door with a top-and-bottom bearing, comprising a door frame (1) fixedly embedded in a wall, and a door panel (3) rotatably mounted on the door frame (1) by a top-and-bottom bearing (2) on the upper and lower sides of the door frame (1) respectively, characterized in that: The door plate (3) is provided with a groove (4), the fixed plate (5) is slidably installed on the groove (4), a plurality of ventilation grooves (6) are formed on the fixed plate (5), the baffle (7) is rotatably arranged on the ventilation groove (6), the limiting mechanism for limiting the rotation of the baffle (7) is arranged on the fixed plate (5), a plurality of electric telescopic rods (8) are fixedly arranged on the door plate (3), a plurality of insertion grooves (9) are formed on the door frame (1) in correspondence with the electric telescopic rods (8), and the electric telescopic rod (8) is inserted and matched with the corresponding insertion groove (9).
2. The security door with top and bottom bearings according to claim 1, characterized in that: The limiting mechanism comprises a worm wheel (20), the baffle (7) is fixedly provided with a rotating shaft (21), the two ends of the rotating shaft (21) are rotatably installed on the fixed plate (5) through bearings, the fixed plate (5) is provided with a hidden groove (22), one end of the rotating shaft (21) penetrates through the hidden groove (22) and is fixedly provided with the worm wheel (20), one side of the worm wheel (20) is engaged and matched with the same worm (23), the worm (23) is rotatably installed in the hidden groove (22), one end of the worm (23) is fixedly connected with the driving shaft of the motor (24), and the motor (24) is fixedly installed in the hidden groove (22).
3. The security door with top and bottom bearings according to claim 1, characterized in that: The upper and lower sides of the door plate (3) are provided with sliding grooves (30), and the sliding grooves (30) are slidably matched with sliding blocks (31), respectively.
4. The security door with top and bottom bearing according to claim 1, characterized in that: The door frame (1) is provided with a first recess (40), a first magnetic block is fixedly arranged on the inner wall of the first recess (40), a second magnetic block (41) capable of being inserted and matched with the first recess (40) is fixedly arranged on the fixed plate (5), and the second magnetic block (41) is capable of being adsorbed together close to the first magnetic block.
5. The security door with top and bottom bearing according to claim 1, characterized in that: The fixed plate (5) is fixedly provided with a handle (50).
6. The security door with top and bottom bearing according to claim 2, characterized in that: The door plate (3) is fixedly provided with a control switch for controlling the rotation of the driving shaft of the motor (24) and the elongation of the electric telescopic rod (8).