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Nut assembly for automatic door drive system

A driving system and automatic door technology, applied in door/window accessories, wing leaf parts, power control mechanism, etc., can solve problems such as difficult control, automatic opening, self-heavy, etc., and achieve simple structure, stable operation, and small quantity Effect

Active Publication Date: 2018-01-30
NANJING KANGNI MECHANICAL & ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: The present invention provides a nut assembly for an automatic door drive system to solve the problem in the prior art that the door will automatically open after a power failure in the door system using electromagnetic locks, and the problem in the door system using mechanical locks. The structure of the existing nut assembly is complex, requiring special chute cooperation, heavy weight, and difficult to control, etc.

Method used

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  • Nut assembly for automatic door drive system
  • Nut assembly for automatic door drive system
  • Nut assembly for automatic door drive system

Examples

Experimental program
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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] Such as Figure 1 to Figure 4 The nut assembly of the automatic door drive system shown includes a nut 31 and a follower part 7 rigidly connected with the nut 31. The nut 31 and the screw rod 2 form a spiral motion pair, and a drive frame 9 is installed outside the nut 31. The drive frame 9 It can move relative to the nut 31, and the transmission frame 9 is connected to the door mechanism; a torsion spring 10 is arranged between the transmission frame 9 and the nut 31, and the torsion spring 10 uses the transmission frame 9 as a support to apply pressure to the follower part 7, and the transmission frame 9 Connect the controlled object 6. In a specific application, the controlled object 6 can be the electric sliding door of the subway or the door leaf of the sliding door system in the rail transit field, or the electric door of the bus and other vehicles. And a...

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PUM

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Abstract

The invention discloses a nut assembly of an automatic door drive system, which comprises a drive frame, a nut sleeved on a screw rod, and a follower part fixed on the nut; the nut is installed in the drive frame, and the drive frame is connected to a door mechanism; There is a mechanism in the drive frame to limit the range of rotation angle of the nut with the screw rod, and the screw rod drives the nut assembly to reciprocate along the axial direction of the screw rod. Compared with the nut assembly in the prior art, which needs to be matched with the chute, the chute is not required, so the structure is simpler and the operation is more stable. Because the number of parts constituting the whole is small, it is easy to process and has a low weight. Small, does not require excessive installation space.

Description

technical field [0001] The invention relates to the field of automatic control systems, in particular to a nut assembly of an automatic door driving system. Background technique [0002] The screw drive control system is generally a motor-driven screw, which drives the nut assembly set on the screw to reciprocate, and then drives the controlled object connected to the nut assembly. Generally speaking, the screw drive control system is mostly used in the field of track doors and electric doors, and it also has locking and unlocking functions. Generally used in the screw drive control system in the above fields, the nut assembly is locked by an electromagnetic lock, thereby realizing the function of locking the door. In this form of screw drive control system, the electromagnetic lock must be energized at any time to ensure the stability of the locked door. If the electromagnetic lock is powered off, there will be a risk that the door will automatically open. However, in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E05F15/622E05F15/652
Inventor 葛汉青俎文凯戴祖信史旭东贡智兵
Owner NANJING KANGNI MECHANICAL & ELECTRICAL