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valves for door closers

A technology of door closers and valve holes, which is applied in the field of valves of hydraulic drive devices, can solve the problems of small volume flow, large cross-section changes, and difficult to achieve precise adjustment of closing speed, and achieve the effect of reducing manufacturing costs

Active Publication Date: 2019-03-29
GEZE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small volume flows and the large cross-section variations, the corresponding adjustment of these hitherto common valves is often difficult to achieve or reproduce a precise adjustment of the closing speed
In addition, these conventional valves are particularly prone to contamination due to the relatively narrow annular throttle gap.

Method used

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  • valves for door closers
  • valves for door closers
  • valves for door closers

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0030] Figure 1-8 A schematic diagram showing different embodiments of a valve 10 for a hydraulic door closer arranged in a hydraulic channel through which a hydraulic fluid 12 can flow according to the invention.

[0031] Here, the valve 10 comprises an axially displaceable valve element 16 in the valve bore 14 , here in a thread 26 , and a valve element arranged on the inner circumference of the valve bore 14 or on the outer circumference of the valve element 16 comprising at least A throttle profile 20 of the outflow channel 18 which opens or closes in response to an axial movement 22 of the valve element 16 relative to the valve bore 14 in order to overflow the hydraulic fluid 12 and / or through which the Axial movement 22 of the valve element 16 may regulate the flow of overflowing hydraulic fluid 12 .

[0032] The valve element 16 is guided axially displaceably by means of a cylindrical section in the likewise cylindrical valve bore 14 , at figure 1 , 2 In the embodim...

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Abstract

The invention relates to a valve for a hydraulic drive of a door, gate or window, in particular a valve for a hydraulic door closer, which valve is arranged in a hydraulic channel through which hydraulic fluid can flow and which comprises a A valve element moving in the center and a throttling profile arranged on the inner circumference of the valve hole or on the outer circumference of the valve element, comprising at least one outflow channel, the throttle profile changes according to the axial movement of the valve element relative to the valve hole Opening or closing in order to overflow hydraulic fluid and / or the flow of overflowing hydraulic fluid can be adjusted by the throttling profile via axial movement of the valve element.

Description

technical field [0001] The invention relates to a valve for a hydraulic drive of a door, gate or window, in particular a valve for a hydraulic door closer, which valve is arranged in a hydraulic channel. Background technique [0002] Hydraulic door closers generally have a spring-loaded piston arranged in the door closer housing, which piston interacts with a shaft on which the lever for actuating the door is arranged. When the lever is actuated during door opening, the spring abutting against the piston is tensioned via the shaft and the piston. The hydraulic fluid in the door closer housing can now overflow from one side of the piston to the other via the hydraulic channels and valves, since the piston chambers on both sides of the piston change due to the piston movement. When opening the door, hydraulic fluid can be flooded as little as possible, so that the door can be actuated without hindrance. The door closes automatically by relaxing the spring that was tensioned ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E05F3/12F16K3/22
CPCE05F3/12F16K3/22F16K3/24F16K3/34
Inventor B·韦尔纳
Owner GEZE GMBH