DRIVING DEVICE FOR DOOR OPENING AND CLOSING

The disclosure discloses a driving device for door opening and closing, which includes: a box body; a permanent magnet synchronous motor arranged inside the box body, an output shaft of the permanent magnet synchronous motor extending along a vertical direction; and a gear set arranged inside the box body and connected with the output shaft of the permanent magnet synchronous motor, and a gear at a tail end of the gear set is provided with a connecting rotating shaft that extends along a vertical direction and is used for connecting a door panel. The above driving device for door opening and closing uses the permanent magnet synchronous motor as a driving source, which is matched with the gear set to implement transmission, the door panel is driven to rotate by the connecting rotating shaft on the gear at the tail end of the gear set.

RELATED APPLICATION

This application claims the priority benefit of Chinese Pat. App. No. 202011308734.8, filed on Nov. 20, 2020, which is fully incorporated by reference herein in its entirety.

TECHNICAL FIELD

The present disclosure relates to a driving device for door opening and closing.

BACKGROUND

In the prior art, a general driving device for door opening and closing includes a box body, a motor built in the box body and a transmission pair connected with an output shaft of the motor. Due to limitation of an installation space, in order to avoid an excessive height of the box body, the driving device for door opening and closing that employs a common motor needs to arrange the output shaft of the motor in a horizontal manner, and uses a worm gear as the transmission pair, so that an output end of the driving device for door opening and closing is switched to a vertical direction, thus connecting a door panel and driving the door panel to rotate relative to a door frame.

The driving device for door opening and closing with the above structure is large in volume, which is difficult to adapt to a situation of a narrow installation space. Moreover, in the case of power failure, it is difficult to manually open a door due to a self-locking angle of the worm gear, thus causing troubles for users.

SUMMARY

The present disclosure aims to solve at least one of the technical problems in the prior art. For this purpose, the present disclosure provides a driving device for door opening and closing, which is small in volume and can be manually switched on or off after power failure.

A driving device for door opening and closing according to an embodiment of the present disclosure includes: a box body; a permanent magnet synchronous motor arranged inside the box body, an output shaft of the permanent magnet synchronous motor extending along a vertical direction; and a gear set arranged inside the box body and connected with the output shaft of the permanent magnet synchronous motor, and a gear at a tail end of the gear set is provided with a connecting rotating shaft that extends along a vertical direction and is used for connecting a door panel.

The driving device for door opening and closing according to the embodiment of the present disclosure has at least the following beneficial effects.

The above driving device for door opening and closing uses the permanent magnet synchronous motor as a driving source, which is matched with the gear set to implement transmission, the door panel is driven to rotate by the connecting rotating shaft on the gear at the tail end of the gear set, since the permanent magnet synchronous motor has a characteristic of a small axial size, the output shaft of the permanent magnet synchronous motor is arranged in a vertically upward manner and matched with the gear set to implement transmission, and then the output shaft does not need to be arranged in a horizontal manner and matched with a worm gear to implement transmission, so that the driving device for door opening and closing is smaller in size, and the door panel can be manually opened in a power failure state, without jamming.

In some embodiments of the present disclosure, the permanent magnet synchronous motor is connected with a controller for controlling a rotation angle and a rotation rate thereof.

In some embodiments of the present disclosure, the box body is arranged in an upper beam of a door frame, and the connecting rotating shaft downwardly penetrates through the upper beam of the door frame and is connected with an upper cross beam of the door panel.

In some embodiments of the present disclosure, the driving device for door opening and closing further includes a door closing positioning mechanism connected between a lower cross beam of the door panel and the ground.

In some embodiments of the present disclosure, the door closing positioning mechanism includes a positioning rod and an elastic positioning member, the positioning rod is provided with a positioning groove, the elastic positioning member is provided with a positioning part matched with the positioning groove, and the elastic positioning member is capable of rotating relative to the positioning rod, so that the positioning part enters and exits the positioning groove.

In some embodiments of the present disclosure, the positioning rod is fixedly arranged on the ground and extends upwardly, a cylindrical part is arranged on a side surface of the positioning rod, the side surface of the cylindrical part is recessed to form the positioning groove, the elastic positioning member includes a fixed seat arranged on the lower cross beam of the door panel, the fixed seat is connected with a movable seat through an elastic member, the positioning part is a rolling wheel rotatably arranged on the movable seat, and the rolling wheel is capable of elastically abutting against the cylindrical part or the positioning groove.

In some embodiments of the present disclosure, the door closing positioning mechanism includes an installation box built in the lower cross beam of the door panel, the elastic positioning member and the cylindrical part of the positioning rod are both arranged in the installation box, and a through hole for the positioning rod to downwardly penetrate through is arranged in a bottom surface of the installation box.

In some embodiments of the present disclosure, a cross section of a lower part of the connecting rotating shaft is rectangular, the lower part of the connecting rotating shaft is connected with an anti-rotation connecting assembly, and the anti-rotation connecting assembly is fixedly connected with the door panel.

In some embodiments of the present disclosure, the anti-rotation connecting assembly includes a fixed connecting seat fixedly connected with the door panel, the fixed connecting seat is provided with an opening groove with an opening in a side surface, a connecting block for closing the opening of the opening groove is detachably installed on the fixed connecting seat, and the connecting block and the opening groove jointly enclose an anti-rotation groove matched with a contour shape of the lower part of the connecting rotating shaft.

In some embodiments of the present disclosure, two ends of the box body are respectively connected with an installation panel for fixing on an inner wall of the upper beam of the door frame.

The additional aspects and advantages of the present disclosure will be partially provided in the following description, and will partially be apparent in the following description, or learned by practice of the present disclosure.

DETAILED DESCRIPTION

The embodiments of the present disclosure are described in detail hereinafter. Examples of the embodiments are shown in the accompanying drawings. The same or similar reference numerals throughout the accompanying drawings denote the same or similar elements or elements having the same or similar functions. The embodiments described hereinafter with reference to the accompanying drawings are exemplary and are only used to explain the present disclosure, but shall not be understood as limiting the present disclosure.

In the description of the present disclosure, it shall be understood that the orientation or position relationship indicated by the terms “up”, “down”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, and the like is based on the orientation or position relationship shown in the accompanying drawings, it is only for the convenience of description of the present disclosure and simplification of the description, and it is not to indicate or imply that the indicated device or element must have a specific orientation, and be constructed and operated in a specific orientation. Therefore, the terms shall not be understood as limiting the present disclosure.

In the description of the present disclosure, the meaning of several refers to be one or more, and the meaning of multiple refers to be more than two. The meanings of greater than, less than, more than, and the like are understood as not including this number, while the meanings of above, below, within, and the like are understood as including this number. If the terms first and second are used for the purpose of distinguishing the technical features only in the description, and cannot be understood as indicating or implying relative importance, implicitly indicating the number of technical features indicated thereby, or implicitly indicating the order of technical features indicated thereby.

In the description of the present disclosure, it shall be noted that the terms “installation”, “connected” and “connection” if any shall be understood in a broad sense unless otherwise specified and defined. For example, they can be fixed connection, removable connection or integrated connection; can be mechanical connection or electrical connection; and can be direct connection, or indirect connection through an intermediate medium, and connection inside two elements. The specific meanings of the above terms in the present disclosure can be understood in a specific case by those of ordinary skills in the art.

With reference toFIG. 1andFIG. 2, the present disclosure discloses a driving device for door opening and closing, which includes: a box body110; a permanent magnet synchronous motor120arranged inside the box body110, an output shaft of the permanent magnet synchronous motor120extending along a vertical direction; and a gear set130arranged inside the box body110and connected with the output shaft of the permanent magnet synchronous motor120. A gear at a tail end of the gear set130is provided with a connecting rotating shaft131that extends along a vertical direction and is used for connecting a door panel20. The above driving device for door opening and closing uses the permanent magnet synchronous motor120as a driving source, which is matched with the gear set130to implement transmission, and the door panel20is driven to rotate by the connecting rotating shaft131on the gear at the tail end of the gear set130. Since the permanent magnet synchronous motor120has a characteristic of a small axial size, the output shaft of the permanent magnet synchronous motor120is arranged in a vertically upward manner and matched with the gear set130to implement transmission, and then the output shaft does not need to be arranged in a horizontal manner and matched with a worm gear to implement transmission, so that the driving device for door opening and closing is smaller in size, and the door panel20can be manually opened in a power failure state, without jamming. In addition, since a rotor excitation mode is used in the permanent magnet synchronous motor120, the permanent magnet synchronous motor has a larger output torque compared with a traditional motor, thus being capable of implementing characteristics of a low rotating speed and a large torque.

With reference toFIG. 1, in some embodiments of the present disclosure, the permanent magnet synchronous motor120is connected with a controller140for controlling a rotation angle and a rotation rate thereof. An angle of opening or closing the door panel20can be controlled by controlling the rotation angle of the permanent magnet synchronous motor120through the controller140, and a speed of opening or closing the door panel20can be controlled by controlling the rotation rate of the permanent magnet synchronous motor120through the controller140. Generally, when the controller140controls the door panel20to open, the permanent magnet synchronous motor120is rotated slowly first, at the moment, the door panel20is opened slowly, and then the permanent magnet synchronous motor120is rotated at an accelerated speed. In the process, the door panel20is opened quickly. When the door panel20is opened near a set angle, the controller140controls the permanent magnet synchronous motor120to rotate slowly, and the door panel20is opened slowly to a set angle position. Similarly, when the controller140controls the door panel20to close, the permanent magnet synchronous motor120is rotated slowly first, at the moment, the door panel20is closed slowly, and then the permanent magnet synchronous motor120is rotated at an accelerated speed. In the process, a closing speed of the door panel20is accelerated, when the door panel20is closed near a set position, the controller140controls the permanent magnet synchronous motor120to rotate slowly, and the door panel20is closed slowly to the set position.

With reference toFIG. 2, in some embodiments of the present disclosure, the box body110is arranged in an upper beam11of a door frame10, so that components and parts in the box body110are capable of being protected while achieving an aesthetic effect. The connecting rotating shaft131downwardly penetrates through the upper beam11of the door frame10and is connected with an upper cross beam21of the door panel20. The connecting rotating shaft131serves as a pivot shaft between the door panel20and the door frame10.

With reference toFIG. 1,FIG. 3, andFIG. 4, in order to keep the door panel20stable after closing and reduce wear on the gear set130, the driving device for door opening and closing further includes a door closing positioning mechanism200connected between a lower cross beam22of the door panel20and the ground.

In some embodiments of the present disclosure, the door closing positioning mechanism200includes a positioning rod210and an elastic positioning member220, the positioning rod210is provided with a positioning groove211, the elastic positioning member220is provided with a positioning part221matched with the positioning groove211, and the elastic positioning member220is capable of rotating relative to the positioning rod210, so that the positioning part221enters and exits the positioning groove210. One of the positioning rod210and the elastic positioning member220is arranged on the door panel20, and the other is arranged on the ground. Certainly, in other embodiments, the door closing positioning mechanism200can also be replaced by the following technical solution: a positioning hole is arranged in a bottom of the door panel20, a sunken groove is arranged in the ground, a telescopic positioning pin is arranged in the sunken groove, and the positioning pin is inserted into the positioning hole to implement positioning of the door panel20after door closing.

With reference toFIG. 4, in some embodiments of the present disclosure, the positioning rod210is fixedly arranged on the ground and extends upwardly, a cylindrical part212is arranged on a side surface of the positioning rod210, and the side surface of the cylindrical part212is recessed to form the positioning groove211. The elastic positioning member220includes a fixed seat222arranged on the lower cross beam22of the door panel20, and the fixed seat222is connected with a movable seat223through an elastic member224. The positioning part221is a rolling wheel rotatably arranged on the movable seat223, and the rolling wheel is capable of elastically abutting against the cylindrical part212or the positioning groove211. In the embodiment, the elastic member224is a compression spring, and the compression spring drives the rolling wheel on the movable seat223to move towards the cylindrical part212. When the door panel20is in a closed state, the positioning groove211faces the rolling wheel to implement positioning. During a closing process of the door panel20, the rolling wheel abuts against the cylindrical part212and moves around a circumferential side wall of the cylindrical part212until the door panel20is closed in place, and the rolling wheel enters the positioning groove211.

With reference toFIG. 3andFIG. 4, in some embodiments of the present disclosure, in order to reduce an erosion probability of the components and parts of the door closing positioning mechanism200, the door closing positioning mechanism200includes an installation box230built in the lower cross beam22of the door panel20, the elastic positioning member220and the cylindrical part212of the positioning rod210are both arranged in the installation box230, and a through hole231for the positioning rod210to downwardly penetrate through is arranged in a bottom surface of the installation box230.

With reference toFIG. 2, in some embodiments of the present disclosure, a cross section of a lower part of the connecting rotating shaft131is rectangular, the lower part of the connecting rotating shaft131is connected with an anti-rotation connecting assembly150, and the anti-rotation connecting assembly150is fixedly connected with the door panel20. When the door panel20is rotated relative to the door frame10, the anti-rotation connecting assembly150is relatively fixed with the connecting rotating shaft131, thus improving a moving stability of the door panel20driven by the driving device for door opening and closing.

With reference toFIG. 2, in some embodiments of the present disclosure, the anti-rotation connecting assembly150includes a fixed connecting seat151fixedly connected with the door panel20, the fixed connecting seat151is provided with an opening groove152with an opening in a side surface, a connecting block153for closing the opening of the opening groove152is detachably installed on the fixed connecting seat151, and the connecting block153and the opening groove152jointly enclose an anti-rotation groove matched with a contour shape of the lower part of the connecting rotating shaft131, which means that the anti-rotation groove is also rectangular. The anti-rotation connecting assembly150with the above structure is beneficial for installation and disassembly of the connecting rotating shaft131. In the embodiment, the connecting block153and the fixed connecting seat151are fastened through a screw.

In some embodiments of the present disclosure, in order to facilitate installation and fixation of the box body110, two ends of the box body110are respectively connected with an installation panel111for fixing on an inner wall of the upper beam11of the door frame10. The installation panel111and the upper beam11of the door frame10can be fixed by welding, the two ends of the box body110are respectively provided with a side ear, the side ear is provided with a threaded through hole, and the side ear is connected with the installation panel111through a threaded fastener.

Various technical features of the above embodiments can be combined randomly, and in order to make the description concise, possible combinations of various technical features in the above embodiments are not all described. However, as long as the combinations of these technical features have no contradiction, the combinations of these technical features shall be considered as falling into the scope recorded by the description.

Although the embodiments of the present disclosure have been shown and described, those of ordinary skills in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and purpose of the present disclosure, and the scope of the present disclosure is defined by the claims and their equivalents.