Electric window

Abstract

The utility model discloses an electric window which comprises a window frame, a window sash and a driving mechanism, and the driving mechanism comprises a driving motor and a control unit. An input shaft of the driving gear box is coaxially fixed with an output shaft of the driving motor; the first transmission shaft is coaxially fixed with an output shaft of the driving gear box; an input shaft of the driven gear box is coaxially fixed to the first transmission shaft, and a second transmission shaft is coaxially fixed to an output shaft of the driven gear box. The first connecting rod is vertically fixed on the second transmission shaft; one end of the second connecting rod is hinged and matched with the first connecting rod, and the other end is hinged and matched with the window sash surface; the driving gear box is a multi-shaft input gear box and comprises a first input shaft and a second input shaft, the first input shaft and the output shaft of the driving motor are coaxially fixed, and a connector with a polygonal section is arranged at the end of the second output shaft. When power failure suddenly occurs or the motor breaks down, manual input can be achieved through tools such as a wrench, and then the window sash is opened or closed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a window, especially an electric window for granary. BACKGROUND

[0002] The existing granary will be provided with a louver, and the louver adopts an electric window structure to realize the above functions for the convenience of controlling opening and closing.

[0003] Chinese patent CN201120487815.9, application date is November 30, 2011, patent name is intelligent electric window for granary, wherein the intelligent electric window is composed of a window frame, a window sash, a window sash fixing frame, a window closing force adjusting device, an angle sensor, an electric telescopic rod and a control box, the window sash is connected with the hinge push rod fixing frame through a hinge, the hinge push rod fixing frame is fixed above the window frame, the window sash is provided with the window sash fixing frame, the window closing force adjusting device is fixedly connected on the window sash fixing frame, one end of the electric telescopic rod is connected with the window closing force adjusting device, the other end is connected with the hinge push rod fixing frame, the angle sensor is fixed on the hinge, and the control box is located at one side outside the whole device. However, the force required for opening and closing the window sash is large in the technical scheme, so it is necessary to be equipped with the electric telescopic rod with large working power, and the limit position of opening and closing cannot be accurately controlled in the working process of the electric telescopic rod, so that the strength fatigue of the corresponding part is caused, and then becomes a potential hidden danger. In addition, the window position in the granary is high, the height reaches 7-9 meters, if a sudden situation such as power failure occurs, it is very inconvenient for the staff to open or close the window. SUMMARY

[0004] In order to overcome the defects of the prior art, the utility model provides an electric window for high place and sudden power failure or motor failure.

[0005] The utility model solves the technical scheme that the utility model adopts: an electric window, including window frame, hinge on the window frame on the window sash, and the drive mechanism for driving the window sash to open or close, the drive mechanism includes:

[0006] Drive motor and control unit for controlling the work of drive motor;

[0007] Driving gear box, the input shaft of the driving gear box is coaxially fixed with the output shaft of the drive motor;

[0008] Vertically arranged first transmission shaft, the first transmission shaft is coaxially fixed with the output shaft of the driving gear box;

[0009] A driven gearbox is installed on the upper part of the first drive shaft. The input shaft of the driven gearbox is fixed coaxially with the first drive shaft. A second drive shaft is fixed coaxially at the output shaft of the driven gearbox. The second drive shaft is arranged perpendicular to the first drive shaft and parallel to the hinge shaft of the window sash.

[0010] The first connecting rod is vertically fixed to the second drive shaft;

[0011] The second link has one end hinged to the first link and the other end hinged to the surface of the window sash.

[0012] The drive gearbox is a multi-axis input gearbox, which includes a first input shaft and a second input shaft. The first input shaft is coaxially fixed with the output shaft of the drive motor, and the end of the second output shaft is provided with a connector with a polygonal cross-section.

[0013] The beneficial effects of this invention are as follows: When the drive motor is working, the torque can be amplified through the active gearbox, and then the window sash can be driven to open or close through the cooperation of the first drive shaft, the second drive shaft, the first connecting rod, and the second connecting rod. The active gearbox is a multi-axis input gearbox, which can realize motor output or manual output. In case of sudden power failure or motor failure, manual input can be achieved using tools such as wrenches, thereby opening or closing the window sash. Furthermore, grain silo windows, besides being installed at high locations, often open from bottom to top, thus requiring the cooperation of the driven gearbox to connect the first and second drive shafts. The length of the first drive shaft can be adjusted according to the environment to meet the operational needs of employees at lower positions.

[0014] The device is further configured to include a base for mounting the drive motor and the drive gearbox, and a limiting mechanism mounted on the base. The limiting mechanism includes: a threaded section on the first drive shaft, with a nut fitted onto the threaded section and a limiting rod fixed to the nut; a limiting groove on the base, extending along the length of the threaded section, with the end of the limiting rod inserted into the limiting groove; and two contact switches located in the direction of travel of the limiting rod, one on the front and one on the rear of the limiting rod. When the limiting rod touches a contact switch, the contact switch generates an electrical signal and transmits it to the control unit. Upon receiving the electrical signal, the control unit controls the drive motor to stop. By using contact switches, the device ensures timely stopping when the window sash opens and closes, thus preventing fatigue of components caused by the motor not stopping in time.

[0015] Further, the second connecting rod comprises a front connecting rod hinged with the sash and a rear connecting rod fixed with the first connecting rod, a screw hole is arranged on the end of the front connecting rod connected with the rear connecting rod, and an external thread matched with the screw hole is arranged on the end of the rear connecting rod connected with the front connecting rod. The length of the second connecting rod can be adjusted through the thread cooperation between the front connecting rod and the rear connecting rod, so as to meet the working requirements in different working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a perspective view of the utility model embodiment, and the sash is in a half-open state.

[0017] Figure 2 It is a front view of the utility model embodiment.

[0018] Figure 3 It is a structure schematic view of the utility model embodiment, and the sash is in a fully-open state.

[0019] Figure 4 It is a partial structure schematic view of the driving mechanism in the utility model embodiment.

[0020] Figure 5 It is a partial structure schematic view of the driving mechanism in the utility model embodiment from another perspective. DETAILED DESCRIPTION

[0021] The utility model will be further described in combination with the drawings:

[0022] As Figures 1-5As shown, the embodiment includes a window frame 1, a window sash 2 hinged to the window frame 1, a driving mechanism 3 for driving the window sash to open or close, and a control unit for controlling the operation of a driving motor in the driving mechanism 3. The driving mechanism 3 includes a driving motor 31, a control unit (not shown) for controlling the operation of the driving motor 31, a driving gear box 32 installed at the output end of the driving motor 31, an input shaft of the driving gear box 32 connected with the output shaft of the driving motor 31, an output shaft of the driving gear box 32 connected with a first transmission shaft 33 arranged vertically, a driven gear box 34 installed at the upper part of the first transmission shaft 33, an input shaft of the driven gear box 34 coaxially fixed with the first transmission shaft 33, an output shaft of the driven gear box 34 coaxially fixed with a second transmission shaft 35, the second transmission shaft 35 arranged perpendicularly to the first transmission shaft 33 and arranged in parallel with the hinged shaft of the window sash 2. The second transmission shaft 35 is fixed with a first connecting rod 36 arranged perpendicularly to the second transmission shaft 35, and the end of the first connecting rod 36 away from the second transmission shaft 35 is hinged with a second connecting rod 37, and the end of the second connecting rod 37 away from the first connecting rod 36 is hinged with the surface of the window sash 2. The driving gear box 34 is a multi-shaft input gear box, which includes a first input shaft 341 coaxially fixed with the output shaft of the driving motor 31 and a second input shaft 342, and the end of the second input shaft 342 is provided with a joint 3421 with a polygonal cross section, which can be manually inputted to rotate by a wrench or the like when power is off or the motor is faulty, so as to realize the opening or closing of the window sash 2. Figure 5 The first transmission shaft 33 only shows the end structure.

[0023] The embodiment also includes a base 5 for installing the driving motor 31 and the driving gear box 32, and a limiting mechanism 4 installed on the base 5. The limiting mechanism 4 includes a threaded section 41 arranged on the extension section of the first transmission shaft 33, a nut 42 sleeved on the threaded section 41, a limiting rod 43 fixed on the nut 42, a limiting groove 44 arranged below the limiting rod 43 along the length direction of the threaded section 41, the limiting groove 44 being arranged on the base 5, and the lower end of the limiting rod 43 being inserted into the limiting groove 44. Two contact switches 45 are arranged in the advancing direction of the limiting rod 43, and the two contact switches 45 are respectively arranged on the front and back sides of the limiting rod 43. When the limiting rod 43 advances and touches one of the contact switches 45, the touched contact switch 45 generates an electric signal and transmits the electric signal to the control unit. After receiving the electric signal, the control unit controls the driving motor 31 to stop. In addition, the second connecting rod 37 includes a front section connecting rod 372 hingedly connected with the window sash 2 and a rear section connecting rod 371 fixedly connected with the first connecting rod 36. The end of the front section connecting rod 372 connected with the rear section connecting rod 371 is provided with a screw hole, and the end of the rear section connecting rod 371 connected with the front section connecting rod 372 is provided with a screw rod matched with the screw hole, so as to realize the threaded connection of the front section connecting rod 372 and the rear section connecting rod 371.

[0024] In the embodiment, the control unit adopts a PLC controller of SIMATIC S7-200 type. In addition, for those skilled in the art, other controllers (or single-chip microcomputers, etc.) capable of realizing the forward and reverse rotation control of the servo motor and receiving the electric signal generated by the contact switch can be adopted, and thus the details are not described herein. The driving motor can adopt a servo motor.

Claims

1. An electric window comprising a window frame, a window sash hinged to the window frame, and a drive mechanism for driving the window sash to open or close, characterized in that, The driving mechanism comprises: a driving motor and a control unit for controlling the driving motor; a driving gear box, the input shaft of which is coaxially fixed with the output shaft of the driving motor; a first transmission shaft arranged vertically, which is coaxially fixed with the output shaft of the driving gear box; a driven gear box mounted on the upper part of the first transmission shaft, the input shaft of which is coaxially fixed with the first transmission shaft, and the output shaft of which is coaxially fixed with a second transmission shaft arranged perpendicularly to the first transmission shaft, which is arranged in parallel with the hinge shaft of the window sash; a first connecting rod fixed perpendicularly to the second transmission shaft; a second connecting rod, one end of which is hingedly connected with the first connecting rod, and the other end of which is hingedly connected with the surface of the window sash. The driving gear box is a multi-shaft input gear box, which comprises a first input shaft and a second input shaft, wherein the first input shaft is coaxially fixed with the output shaft of the driving motor, and the end of the second input shaft is provided with a joint with a polygonal cross section.

2. The motorized window of claim 1, wherein, Further comprising a base for mounting the driving motor and the driving gear box, and a limiting mechanism mounted on the base, which comprises: a threaded section arranged on the first transmission shaft, a nut being sleeved on the threaded section, and a limiting rod being fixed on the nut; a limiting groove arranged on the base along the length direction of the threaded section, and the lower end of the limiting rod being inserted into the limiting groove; two contact switches arranged in the advancing direction of the limiting rod, and the two contact switches being respectively arranged on the front and back sides of the limiting rod; When the limiting rod touches the contact switches, the contact switches will generate an electric signal and transmit it to the control unit, and the control unit will control the driving motor to stop working after receiving the electric signal.

3. The motorized window of claim 1, wherein: The second connecting rod comprises a front connecting rod hingedly connected with the window sash and a rear connecting rod fixedly connected with the first connecting rod, the end of the front connecting rod connected with the rear connecting rod is provided with a screw hole, and the end of the rear connecting rod connected with the front connecting rod is provided with an external thread matched with the screw hole.

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