Pure electric passenger car double-leaf inner swing door dual-motor drive device

Abstract

The invention discloses a double-motor driving device for double inner swing doors of a pure electric bus. The double-motor driving device comprises a left door leaf, a right door leaf, a bus door swing mechanism, a bus door transmission mechanism and an emergency door opening mechanism, wherein the bus door swing mechanism is similar to the well-known device; the bus door transmission mechanism comprises two motors, a double-sided synchronous belt, a single-sided synchronous belt, large belt wheels, guide wheels, tensioning springs and door shaft idler wheel sets; the upper motor drives a left door shaft and a right door shaft to rotate through the double-sided synchronous belt, and the lower motor drives the left door leaf and the right door leaf to swing through the single-sided synchronous belt; the double-sided synchronous belt is arranged in a horizontal 8-shaped cross manner, and one synchronous belt body penetrates through the other synchronous belt body at the crossed position; each door leaf is provided with a sliding block connecting plate, and clamping buckles are used for fixedly connecting the single-sided synchronous belt with the sliding block connecting plates; the tensioning springs are used for flexibly adjusting the tension of the synchronous belts in the working process; and a hand brake can be pulled for emergency door opening, and then the left door leaf and the right door leaf can be manually pulled open. The double-motor driving device avoids the problem of pressure angle degradation generated in the process of opening and closing doors traditionally, the required motor power is small, the operation is simple and labor-saving, and the practicability is high.

Description

technical field [0001] The invention relates to a dual-motor driving device for a double-leaf inner swing door of a pure electric passenger car, in particular to a double-motor driving device for opening and closing a double-leaf inner swing door of a pure electric passenger car, and belongs to the technical field of the automobile industry. Background technique [0002] Buses are the most convenient and applicable means of transportation for public travel. With the increasing awareness of environmental protection, a new energy pure electric bus is more and more commonly used in urban transportation. The switch power control mechanism of the double-leaf inner swing door of the existing bus mainly includes two types: the pneumatic inner swing door and the electric inner swing door; Internal swing, this driving method requires a clean and dry compressed air source. However, new energy pure electric buses are required for energy saving and noise reduction, and there are genera...

AI Technical Summary

Problems solved by technology

The electric inner swing door device mainly has two structures: one is to install a set of motor and deceleration device on both sides of the door; Swing doors require a lot of gears, reducers and other parts. The structure is complex and the production cost is high. During use, oil will drip from the top of the door. On the other hand, some electric inner swing doors are not equipped with a safety unlocking device, which is not conducive to safety. use

[0003] as attached figure 1 As shown, in the existing pneumatic inner swing door or electric inner swing door, the push rod can only provide a thrust along its own axis. The included angle (that is, the pressure angle) is large, and it is close to 90° at the moment of opening the door. Pushing the inner swing door requires a large thrust of the push rod, and only a small part of the effective component of the thrust of the push rod is used to open the door. , and the rest are invalid force components. At the same time, a large part of the invalid force components in the thrust acts on the door shaft, which causes positive pressure and friction on the bearing, causing easy wear of the parts on the door shaft; on the other hand, in During the door opening process, with the swing of the door, the pressure angle between the thrust and the direction of the door movement speed gradually decreases, but the thrust remains unchanged. In the second half of the door opening movement, the thrust of the push rod is too large. Collision between the door panel and the door frame produces noise and affects the service life of the door; during the door closing process, the pressure angle of the inner swing door also deteriorates, and at the moment of closing the door, the pressure angle between the door and the slider and the slideway is also close to 90°, a large pulling force is required to pull the slider to close in the middle

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