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A multi-stage positioning floor spring with adjustable door opening and closing force

An adjustable, floor spring technology, used in switches with brakes, door/window accessories, wing components, etc., to solve problems such as unadjustable opening and closing force and multi-point positioning.

Active Publication Date: 2016-12-07
HUZHOU DEGUAN DOOR CONTROL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention mainly aims at the problems that existing floor springs cannot be multi-point positioned and the opening and closing strength cannot be adjusted, and provides a door opening and closing that can not only adjust the opening and closing strength of the door leaf, but also realize the opening and positioning of 90-180 degrees. Force-adjustable multi-stage positioning floor spring

Method used

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  • A multi-stage positioning floor spring with adjustable door opening and closing force
  • A multi-stage positioning floor spring with adjustable door opening and closing force
  • A multi-stage positioning floor spring with adjustable door opening and closing force

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] As attached figure 1 , 2 As shown, an open and close door force adjustable multi-stage positioning spring includes a valve body 1 and a central shaft 2. The valve body is provided with a communicating valve body cavity 3 and a movable cavity 4, and both ends of the valve body cavity are respectively provided with a piston 5 and a rear Cover 6, a spring 7 is connected between the piston and the rear cover. The upper pull tab 8, the main cam 10, the auxiliary cam 11 and the pull tab 9 are arranged in the movable cavity from top to bottom. Figure 4 , 5 As shown, the upper pull piece and the lower pull piece are provided with guide grooves, the central shaft passes through the guide grooves of the upper pull piece and the pull down piece and is vertically connected in the movable cavity, the main cam and the auxiliary cam are fixedly connected with the central shaft, The pull tab and the pull tab are connected by a large roller shaft 12, and the large roller shaft is connecte...

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PUM

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Abstract

The invention relates to a floor spring with door opening and closing strength adjusting and multi-point positioning functions. The floor spring comprises a valve body and a center shaft. Two ends of a valve chamber are provided with a piston, a rear cover and a spring. An upper pulling piece, a main cam, an auxiliary cam, a lower pulling piece, a large roller shaft and a small roller shaft are arranged in a moving chamber. The large roller shaft is connected with a drive roller. The small roller shaft is connected with a buffer roller. The main cam is provided with a continuous outer contour in the arc surface. A notch is formed in the main cam. The auxiliary cam is provided with an arc outer contour. An oil leak is formed in the head of the piston ad internally provided with a one-way valve. An upper cover is arranged on the upper portion of the moving chamber. The floor spring has the advantages that a double-cam structure is adopted to achieve 90-degree positioning and 90- to 180-degree optional positioning; connections such as a pulling rod of the traditional floor spring are omitted, and the spring at the tail is employed to adjust strength, thus the door opening and closing strength is adjusted.

Description

Technical field [0001] The invention relates to a hydraulic door closer, in particular to a door opening and closing force adjustable multi-stage positioning spring capable of positioning at any point between 90 and 180 degrees. Background technique [0002] The floor spring is a hydraulic door closer, but the device that compresses the spring is a worm gear instead of a rack and pinion. Because the worm wheel can rotate forward and backward, the floor spring can be used for two-way opening doors, while the door closer can only be used for one-way opening doors. The worm gear structure of the floor spring makes the compression of the spring smaller than that of the rack and pinion drive door closer, and the force arm of the floor spring to close the door is also shorter, so the quality of the floor spring is more dependent on the structural design and processing accuracy. In addition, because the two-way door leaf has a great force on the floor spring along the door leaf plane, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E05F3/04E05F3/22
CPCE05F3/04E05F3/22E05Y2900/132
Inventor 杨国元黄开华
Owner HUZHOU DEGUAN DOOR CONTROL CO LTD