Lifting door mechanism

Abstract

The utility model relates to the technical field of overhead doors, in particular to an overhead door mechanism which comprises a door frame and a gear motor. According to the lifting door, the door frame, the upper door and the lower door are arranged, the upper door and the lower door can be moved in the door frame under the driving of the gear motor when the lifting door is used, the space occupied by rolling the door plate of the lifting door is reduced, and the lifting door is convenient to use; by arranging the gear motor, the rotating shaft, the left-handed screw rod, the right-handed screw rod, the upper door and the lower door, the rotating shaft is driven by the gear motor to rotate during use, the rotating shaft drives the left-handed screw rod to rotate through the reverser, and the left-handed screw rod drives the right-handed screw rod to rotate; the upper door and the lower door can be driven to move in opposite directions through the left-handed lead screw nut and the right-handed lead screw nut, the opening and closing speed of the overhead door can be effectively increased, and use is convenient.

Description

Technical Field

[0001] The utility model relates to a lifting door, in particular to a lifting door mechanism. Background Art

[0002] A lift door is a door that can move up and down. Lift doors in the prior art are often used at the entrance or exit of large buildings, such as shopping malls, airports, railway stations, etc.

[0003] In actual use, the lifting door can be moved in a single unidirectional manner by manpower or an external driving structure, and the door panels of the lifting door can be rolled up together to complete the door opening function. However, in some usage scenarios, due to the limitation of the installation space, the rolling operation cannot be realized, which is not conducive to the use of the lifting door; and because the one-way opening method is used for opening and closing, the opening and closing speed of the lifting door is slow, which is not conducive to use. For this reason, the utility model proposes a lifting door mechanism. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a lifting door mechanism to overcome the deficiencies of the prior art.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A lifting door mechanism comprises a door frame, wherein a reduction motor is fixedly connected to the center of the top surface of the door frame, two rotating shafts are symmetrically fixedly connected to the reduction motor, a commutator is installed on the end of the rotating shaft away from the reduction motor, a left-hand screw is installed on the bottom surface of the commutator, and a right-hand screw is connected to the end of the left-hand screw away from the commutator, the left-hand screw and the right-hand screw are both installed on the side walls of the door frame, an upper door and a lower door are symmetrically and movably connected to the front side of the door frame, left-hand screw nuts are installed on the left and right side walls of the upper door, the left-hand screw nuts are respectively sleeved on the left-hand screws on both sides and are threadedly connected to each other, and right-hand screw nuts are installed on the left and right side walls of the lower door, the right-hand screw nuts are respectively sleeved on the right-hand screws on both sides and are threadedly connected to each other.

[0007] As a preferred technical solution of the utility model, two slide rails are symmetrically fixedly connected to the front side wall of the door frame, and sliders are fixedly connected to the rear side walls of the upper door and the lower door. The sliders are inserted into the slide rails and are movably connected to the slide rails.

[0008] As a preferred technical solution of the utility model, a connecting shaft is provided between the left-hand screw and the right-hand screw on the same side, and both ends of the connecting shaft are fixedly connected to the left-hand screw and the right-hand screw respectively.

[0009] As a preferred technical solution of the utility model, the rotating shaft is movably connected with a first mounting seat near both ends, and the left-hand screw rod and the right-hand screw rod are movably connected with a second mounting seat at both ends, and the first mounting seat and the second mounting seat are both fixedly connected to the door frame.

[0010] As a preferred technical solution of the utility model, connecting plates are fixedly connected to the left and right side walls of the upper door and the lower door, and the other sides of the connecting plates are fixedly connected to the left-handed screw nut and the right-handed screw nut respectively.

[0011] As a preferred technical solution of the utility model, a reinforcing plate is fixedly connected to the rear side walls of the upper door and the lower door.

[0012] The embodiment of the utility model provides a lifting door mechanism, which has the following beneficial effects:

[0013] 1. The utility model is provided with a door frame, an upper door and a lower door. When in use, the upper door and the lower door can be moved inside the door frame by driving a reduction motor, thereby reducing the space occupied by the curling of the lifting door panel, and facilitating use;

[0014] 2. The utility model is provided with a reduction motor, a rotating shaft, a left-hand screw, a right-hand screw, an upper door and a lower door. When in use, the reduction motor drives the rotating shaft to rotate, and the rotating shaft drives the left-hand screw to rotate through the commutator, and the left-hand screw drives the right-hand screw to rotate. Due to the different thread directions on the left-hand screw and the right-hand screw, the upper door and the lower door can be driven to move in opposite directions through the left-hand screw nut and the right-hand screw nut, which can effectively improve the speed of opening and closing the lifting door and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the front three-dimensional structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the side three-dimensional structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure on the door frame of the utility model;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the door of the utility model.

[0020] In the figure: 1. door frame; 2. reduction motor; 3. rotating shaft; 4. commutator; 5. left-hand screw; 6. right-hand screw; 7. upper door; 8. lower door; 9. left-hand screw nut; 10. right-hand screw nut; 11. slide rail; 12. slider; 13. connecting shaft; 14. first mounting seat; 15. second mounting seat; 16. connecting plate; 17. reinforcing plate. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0022] Example: Figure 1-4 As shown, a lifting door mechanism comprises a door frame 1, a reduction motor 2 is fixedly connected to the center of the top surface of the door frame 1, two rotating shafts 3 are fixedly connected to the reduction motor 2 in a left-right symmetrical manner, a commutator 4 is installed at one end of the rotating shaft 3 away from the reduction motor 2, a left-hand screw rod 5 is installed on the bottom surface of the commutator 4, and a right-hand screw rod 6 is connected to the end of the left-hand screw rod 5 away from the commutator 4. The left-hand screw rod 5 and the right-hand screw rod 6 are both installed on the side wall of the door frame 1, and an upper door 7 and a lower door 8 are symmetrically connected to the front side of the door frame 1. Left-hand screw nuts 9 are installed on the left and right side walls of the upper door 7, which are respectively sleeved on the left-hand screw rods 5 on both sides and threadedly connected to each other. Right-hand screw nuts 10 are installed on the left and right side walls of the lower door 8, which are respectively sleeved on the right-hand screw rods 6 on both sides and threadedly connected to each other. When the reduction motor 2 rotates forward, the upper door 7 moves down and the lower door 8 moves up to close the door. When the reduction motor 2 rotates reversely, the upper door 7 moves up and the lower door 8 moves down to open the door separately, which is convenient for use.

[0023] Among them, a connecting shaft 13 is provided between the left-hand screw rod 5 and the right-hand screw rod 6 on the same side, and the two ends of the connecting shaft 13 are respectively fixedly connected to the left-hand screw rod 5 and the right-hand screw rod 6 to achieve the connection between the left-hand screw rod 5 and the right-hand screw rod 6, thereby completing the transmission;

[0024] Among them, the rotating shaft 3 is movably connected with a first mounting seat 14 near both ends, and the left-hand screw rod 5 and the right-hand screw rod 6 are movably connected with a second mounting seat 15 at both ends. The first mounting seat 14 and the second mounting seat 15 are fixedly connected to the door frame 1, so as to improve the stability of the movement of the rotating shaft 3, the left-hand screw rod 5 and the right-hand screw rod 6 and facilitate their fixed installation;

[0025] Two slide rails 11 are symmetrically fixedly connected to the front side wall of the door frame 1, and sliders 12 are fixedly connected to the rear side walls of the upper door 7 and the lower door 8. The sliders 12 are inserted into the slide rails 11 and are movably connected to the slide rails 11, so that the upper door 7 and the lower door 8 can move stably on the door frame 1;

[0026] The left and right side walls of the upper door 7 and the lower door 8 are fixedly connected with a connecting plate 16, and the other side of the connecting plate 16 is fixedly connected with the left-hand screw nut 9 and the right-hand screw nut 10 respectively, so as to facilitate the movement of the upper door 7 and the lower door 8;

[0027] Among them, the rear side walls of the upper door 7 and the lower door 8 are fixedly connected with a reinforcing plate 17, so as to improve the strength of the upper door 7 and the lower door 8 and achieve good use effect.

[0028] Working principle: When the utility model device is in use, the reduction motor 2 is first connected to the external power supply. When the lifting door needs to be opened or closed, the reduction motor 2 is started by the external power supply, and the power is transmitted to the commutators 4 on both sides through the rotating shaft 3. The commutator 4 then transmits the power to the left-hand screw 5 connected thereto, and then transmits the power to the right-hand screw 6 through the connecting shaft 13. Since the upper door 7 is connected to the left-hand screw nut 9 installed on the left-hand screw 5, and the lower door 8 is connected to the right-hand screw nut 10 installed on the right-hand screw 6, when the reduction motor 2 rotates forward, the upper door 7 moves down and the lower door 8 moves up to close the door. When the reduction motor 2 rotates reversely, the upper door 7 moves up and the lower door 8 moves down to open the door separately, which is convenient for use.

[0029] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A lifting door mechanism, comprising a door frame (1), characterized in that: A reduction motor (2) is fixedly connected to the center of the top surface of the door frame (1); two rotating shafts (3) are fixedly connected to the reduction motor (2) in a symmetrical manner on the left and right; a commutator (4) is installed at one end of the rotating shaft (3) away from the reduction motor (2); a left-hand screw rod (5) is installed on the bottom surface of the commutator (4); a right-hand screw rod (6) is connected to one end of the left-hand screw rod (5) away from the commutator (4); the left-hand screw rod (5) and the right-hand screw rod (6) are both installed on the side of the door frame (1). The door frame (1) is provided with an upper door (7) and a lower door (8) symmetrically connected to each other on the front side thereof. Left-hand screw nuts (9) are installed on the left and right side walls of the upper door (7). The left-hand screw nuts (9) are respectively sleeved on the left-hand screws (5) on both sides and are threadedly connected to each other. Right-hand screw nuts (10) are installed on the left and right side walls of the lower door (8). The right-hand screw nuts (10) are respectively sleeved on the right-hand screws (6) on both sides and are threadedly connected to each other.

2. A lifting door mechanism according to claim 1, characterized in that: Two slide rails (11) are symmetrically fixedly connected to the front side wall of the door frame (1), and sliding blocks (12) are fixedly connected to the rear side walls of the upper door (7) and the lower door (8). The sliding blocks (12) are inserted into the sliding rails (11) and are movably connected to the sliding rails (11).

3. A lifting door mechanism according to claim 1, characterized in that: A connecting shaft (13) is provided between the left-handed screw rod (5) and the right-handed screw rod (6) on the same side, and two ends of the connecting shaft (13) are respectively fixedly connected to the left-handed screw rod (5) and the right-handed screw rod (6).

4. A lifting door mechanism according to claim 1, characterized in that: The rotating shaft (3) is movably connected to a first mounting seat (14) near both ends, and the left-hand screw rod (5) and the right-hand screw rod (6) are movably connected to a second mounting seat (15) at both ends. The first mounting seat (14) and the second mounting seat (15) are both fixedly connected to the door frame (1).

5. A lifting door mechanism according to claim 1, characterized in that: A connecting plate (16) is fixedly connected to the left and right side walls of the upper door (7) and the lower door (8), and the other side of the connecting plate (16) is fixedly connected to a left-handed screw nut (9) and a right-handed screw nut (10), respectively.

6. A lifting door mechanism according to claim 1, characterized in that: A reinforcing plate (17) is fixedly connected to the rear side walls of the upper door (7) and the lower door (8).

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