Door opener

Abstract

The utility model provides a door opener which comprises a motor and a gear reduction box, a motor rotating shaft penetrates through a motor body, one side of a motor output shaft is fixed with the gear reduction box through a bolt, an electromagnetic brake is arranged on the gear reduction box, a driving mechanism is arranged on one side, far away from the gear reduction box, of the motor, and an electromagnetic brake is arranged on the other side of the motor. A bevel gear is arranged in the driving mechanism and connected with an input shaft of the motor through a key groove, and a chain wheel and a chain matched with the chain wheel are arranged on one side of the driving mechanism. According to the door opener disclosed by the utility model, the door can be opened and closed during power-on and power-off through the cooperation of the electromagnetic brake and the driving mechanism arranged on the gear reduction box, and the driving mechanism can be mounted in multiple positions by mounting the bevel gear, so that the door opener can be suitable for being mounted and used in various environments.

Description

Technical Field

[0001] The utility model relates to the technical field of doors, in particular to a door opener. Background Art

[0002] With the development of the rolling door industry, door openers have become a commonly used device in people's daily lives. A good door opener not only needs to meet the most basic door opening function, but should also be safe, quiet and energy-saving.

[0003] Among the existing technologies, most of them adopt the traditional reduction method of AC motor with worm gear and worm. The AC motor is easy to heat up and the frequency of use is relatively low; the worm gear and worm are easy to wear, the transmission noise is loud, and the service life is short; the transmission efficiency is low; in order to increase the transmission force, the motor power is often made very large; and it cannot adapt to the use of different places and different installation methods. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a door opener, aiming to solve the technical problems of easy wear and loud transmission noise caused by the traditional reduction method of using an AC motor with a worm gear and a worm in the prior art, as well as a single installation method.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a door opener, including a motor and a gear reduction box, the gear reduction box including a housing, an input gear shaft and an output gear shaft which are through-typely arranged on the housing, and a transmission mechanism connecting the input gear shaft and the output gear shaft, the gear reduction box is provided with an electromagnetic brake, the motor and the gear reduction box housing are fixed by bolts, one end of the input gear shaft is located in the electromagnetic brake, the input gear shaft is away from the electromagnetic brake and is axially connected to the output shaft of the motor, and a driving mechanism is provided on one side of the input shaft of the motor.

[0006] According to one aspect of the above technical solution, the driving mechanism includes a mechanism housing, a bevel gear and a bevel gear rod matching the bevel gear are arranged inside the mechanism housing, the bevel gear is vertically meshed with the bevel gear rod, the bevel gear rod passes through the mechanism housing and a sprocket is provided at one end, and a hand chain is provided on the sprocket for use with the sprocket.

[0007] According to one aspect of the above technical solution, the motor is detachably connected to the mechanism housing.

[0008] According to one aspect of the above technical solution, the bevel gear is connected to the input shaft of the motor.

[0009] According to one aspect of the above technical solution, a control main board connected to the brake is provided on the gear reduction box housing, and a dust-proof plastic outer cover is provided outside the control main board.

[0010] According to one aspect of the above technical solution, the motor is a DC motor.

[0011] According to one aspect of the above technical solution, the driving mechanism is a handwheel handle, and a through hole connected to the input shaft of the motor is provided at the center of the handwheel handle.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: the gear reduction device is used for speed reduction, and at the same time, an electromagnetic loss brake is equipped for braking, perfectly avoiding the disadvantages of easy wear and large transmission noise brought by the traditional worm and worm gear reduction device, and having a long service life. By installing the driving mechanism, the door can be normally opened and closed when the motor is powered off, and the driving mechanism is equipped with bevel gears and bevel gear rods, skillfully using the characteristic of unlimited orientation of the rotating body transmission, so as to achieve the function of being installed in four directions. In addition, the present utility model uses a DC motor as the power source, with small heat generation and low power. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of the door opener in the first embodiment of the present utility model;

[0014] Figure 2 It is a partial structural diagram of the door opener in the first embodiment of the present utility model;

[0015] Figure 3 It is a schematic structural diagram of the bevel gear and bevel gear rod of the door opener in the first embodiment of the present utility model;

[0016] Figure 4 It is a schematic structural diagram of the door opener in the second embodiment of the present utility model;

[0017] Figure 5 It is a schematic structural diagram of the door opener in the third embodiment of the present utility model;

[0018] Figure 6 It is a schematic structural diagram of the door opener in the fourth embodiment of the present utility model;

[0019] Main element symbol description: 1 - motor, 2 - gear reduction box, 21 - housing, 22 - input gear shaft, 23 - output gear shaft, 24 - control main board, 25 - plastic outer cover, 3 - electromagnetic loss brake, 4 - driving mechanism, 41 - bevel gear, 42 - bevel gear rod, 43 - sprocket, 44 - hand chain, 5 - handwheel handle;

[0020] The following specific embodiments will further illustrate the present utility model in conjunction with the above drawings. SPECIFIC EMBODIMENTS

[0021] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] See also Figures 1 to 3 , shown is a door opener in the first embodiment of the utility model, including a motor 1 and a gear reduction box 2, the gear reduction box 2 including a housing 21, an input gear shaft 22 and an output gear shaft 23 which are through-typely arranged on the housing 21, and a transmission mechanism connecting the input gear shaft 22 and the output gear shaft 23, the gear reduction box 2 is provided with an electromagnetic brake 3, the motor 1 is fixed to the housing 21 of the gear reduction box 2 by bolts, one end of the input gear shaft 22 is located in the electromagnetic brake 3, the input gear shaft 22 is away from the electromagnetic brake 3 and is axially connected to the output shaft of the motor 1, and a driving mechanism 4 is provided on one side of the input shaft of the motor 1.

[0025] It should be noted that the drive mechanism 4 is internally provided with a bevel gear 41 connected to the motor 1 and a bevel gear rod 42 vertically meshing with the bevel gear 41 , and a sprocket 43 driving the entire drive mechanism 4 and a hand chain 44 used in conjunction with the sprocket 43 are installed at one end of the bevel gear rod 42 .

[0026] In this embodiment, a through hole is provided in the center of the output gear shaft 23 for installing the door shaft assembly, a slot is provided in the center of one side of the input gear shaft 22 for connecting the output shaft of the motor 1, and the other side is connected to the electromagnetic brake 3.

[0027] Working principle: When powered on, under the control of the control main board 24, the electromagnetic brake 3 loses power and demagnetizes, losing its braking function, and at the same time, the input shaft of the motor 1 is disconnected from the drive mechanism 4. Meanwhile, the DC motor 1 is powered on and operates to drive the gear reduction box 2 to work, thereby driving the opening and closing of the door.

[0028] If, during operation, there is a sudden power outage, since the electromagnetic brake 3 loses power and becomes magnetic, at this time, the electromagnetic brake 3 has the braking function and brakes the gear reduction box 2, thereby preventing the door from sliding down due to gravity; at the same time, the input shaft of the DC motor 1 is connected to the drive mechanism 4.

[0029] During a power outage, since the braking torque of the electromagnetic brake 3 is 4 N·m and the torque pulled by the drive mechanism 4 through the hand chain 44 is about 30 N·m, therefore, when using the drive mechanism 4 in a power outage state, it can completely overcome the braking force of the electromagnetic brake 3 to drive the gear reduction box 2 to rotate, so that the door can be manually opened and closed by manually pulling the hand chain 44 during a power outage.

[0030] Preferably, the motor 1 is detachably connected to the housing of the drive mechanism 4.

[0031] Please refer to Figure 4 , which shows the door opener in the second embodiment of the present invention. The sprocket 43 and the hand chain 44 of the drive mechanism 4 are installed on the side facing the gear reduction box 2, which is suitable for installation in a narrow side space.

[0032] Please refer to Figure 5 , which shows the door opener in the third embodiment of the present invention. The sprocket 43 and the hand chain 44 of the drive mechanism 4 are installed in the same vertical direction as the gear reduction box 2, which is suitable for installation and use at some higher positions.

[0033] As can be seen from the above, the drive mechanism 4 is internally provided with bevel gears 41 and bevel gear rods 42. The bevel gear 41 is detachably connected to the output shaft of the DC motor 1. Also, because the bevel gear 41 and the bevel gear rod 42 are vertically meshed, the hand-operated drive mechanism 4 can be rotated 180° in one direction on the same plane and can be installed in four directions.

[0034] In summary, for the door opener in the above embodiments of the present invention, by equipping the gear reduction box with an electromagnetic brake and a drive mechanism, the door can be opened and closed both when powered on and when powered off. And through the vertical meshing installation of the bevel gear and the bevel gear rod, the multi-position installation function of the drive mechanism is realized, so that the present invention can be adapted to installation and use in a variety of environments. In addition, the present invention uses a DC motor instead of an AC motor and uses a gear reduction box instead of a worm and worm gear reducer, so that when the present invention works, it has less heat generation, lower power, less wear, and a long service life.

[0035] Please checkFigure 6 , shown is the door opener in the fourth embodiment of the present utility model. The difference between the door opener in this embodiment and the door opener in the first embodiment is that: the driving mechanism 4 is a handwheel handle 5, the handwheel handle 5 is installed at one end of the input shaft of the DC motor 1, and a through hole connected to the input shaft of the motor 1 is provided at the center of the handwheel handle 5. Through the through hole, the handwheel handle 5 is detachably installed with the motor 1, so that the door opener can be installed and used at a lower position.

[0036] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0037] The above-described embodiments only represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the appended claims.

Claims

1. A door opener, characterized in that: It includes a motor and a gear reduction box, the gear reduction box includes a housing, an input gear shaft and an output gear shaft which are through-typely arranged on the housing, and a transmission mechanism connecting the input gear shaft and the output gear shaft, the gear reduction box is provided with an electromagnetic brake, the motor and the housing of the gear reduction box are fixed by bolts, one end of the input gear shaft is located in the electromagnetic brake, the end of the input gear shaft away from the electromagnetic brake is axially connected to the output shaft of the motor, and a driving mechanism is provided on one side of the input shaft of the motor.

2. The door opener according to claim 1, characterized in that: The driving mechanism includes a mechanism housing, a bevel gear and a bevel gear rod matched with the bevel gear are arranged inside the mechanism housing, the bevel gear is vertically meshed with the bevel gear rod, the bevel gear rod passes through the mechanism housing and is provided with a sprocket at one end, and a hand chain used in conjunction with the sprocket is provided on the sprocket.

3. The door opener according to claim 2, characterized in that: The motor is detachably connected to the mechanism housing.

4. The door opener according to claim 2, characterized in that: The bevel gear is connected to the input shaft of the motor.

5. The door opener according to claim 1, characterized in that: The gear reduction box housing is provided with a control mainboard connected to the brake, and a dustproof plastic outer cover is provided on the outer side of the control mainboard.

6. The door opener according to claim 1, characterized in that: The motor is a DC motor.

7. The door opener according to claim 1, characterized in that: The driving mechanism is a handwheel handle, and a through hole connected to the input shaft of the motor is provided at the center of the handwheel handle.

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