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Door closer

A door closer and limiter technology, applied in the field of door closers, can solve the problems of poor appearance and the overall size of the door closer, and achieve the effect of elegant appearance and simple structure

Inactive Publication Date: 2007-10-31
ENG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, the above-mentioned door closer is provided with a time-delay mechanism on the original door closer. Since the time-delay mechanism is additionally attached, the appearance is not good, and the door closer as a whole is also relatively large.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0061] Embodiments of the present invention will be described below with reference to the drawings showing examples.

[0062] In Fig. 1, 1 is the door closer of the present invention, and the door closer 1 is provided with the door closer main body 3 of the first embodiment of the present invention installed on the door 2, and the connecting rod 4 pivotally supported on the door closer main body 3 swingably. 1. A swing arm 5 rotatably pivotally supported on the connecting rod 4 and a wall fixing support 7 mounted on the wall 6 pivotally pivotally supporting the swing arm 5 .

[0063] As shown in Figure 3, the main body 3 of the door closer shown in Figure 2 is provided with a hydraulic cylinder 11, a piston 14, a gear body 15 and a limiter 21; Inside the cylinder 11, a rack 13 is engraved on the outer periphery; the gear body 15 is supported on the hydraulic cylinder 11, and at the same time meshes with the rack 13 of the piston 14 to make the piston 14 slide; 2 is turned on,...

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PUM

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Abstract

A door closer is used for energizing a door in the direction closing the door, and the door closer has a door-closer main body installed on the door. The door-closer main body includes a hydraulic cylinder. A piston is placed within the hydraulic cylinder for being energized by an elastic body and which has a gear portion formed around its periphery. A gear body is pivoted by the hydraulic cylinder and which engages the gear portion of the piston to cause the piston to slide. A restricting mechanism temporarily restricts the rotation of the gear body when the door is opened.

Description

technical field [0001] The present invention relates to a door closer for exerting elastic force in the door closing direction, in particular to a door closer capable of temporarily restricting the movement in the door closing direction when the door is opened. Background technique [0002] In the past, door closers for applying elastic force in the door closing direction have been widely used. After the door is opened, the door closer applies elastic force in the door closing direction in a buffered manner, so that the door can be automatically and smoothly closed. [0003] In addition, the previous door closers close the door immediately after opening the door, or fix the door in an open state. Once a person applies elastic force in the direction of closing the door, the door closer automatically closes the door. [0004] However, for example, when carrying heavy objects, when many people pass by, or when wheelchairs pass through, etc., it may be dangerous to close the doo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E05F3/04E05F3/22
CPCE05F3/102E05Y2900/132E05F3/221E05F3/00E05F3/04
Inventor 宫下清哉
Owner ENG CORP