CN205135204U

CN205135204U - Door closer

Info

Publication number: CN205135204U
Application number: CN201520797439.1U
Authority: CN
Inventors: 陈招胜
Original assignee: Wenzhou Ou De Gate Development In Science And Technology Co Ltd
Current assignee: Wenzhou Ou De Gate Development In Science And Technology Co Ltd
Priority date: 2015-10-15
Filing date: 2015-10-15
Publication date: 2016-04-06
Anticipated expiration: 2025-10-15

Abstract

The utility model discloses a door closer, including organism, piston, compression spring and gear shaft, the inside installation die cavity that is equipped with of organism, its both ends are equipped with and install the communicating mounting hole of die cavity, and equal sealing connection has an end cover in two mounting holes, piston, compression spring and gear shaft are arranged in the installation die cavity that is full of hydraulic oil, compression spring one end and hinge joint, the other end is connected with the end cover, be equipped with tooth on the piston, gear shaft and piston meshing to rotation through the gear shaft makes piston axial motion, the check valve has all been seted up at the both ends of piston, and the export orientation of valve is opposite, still be equipped with the fuel tap that is used for injecing the hydraulic oil velocity of flow on the organism, this utility model can adjust closing speed, have close the door, buffering and delayed function.

Description

Door closer

Technical field

The utility model relates to a kind of door closer with buffering and delay function.

Background technology

Door closer is a hydraulic press for a upper spring-like, by compressing rear release after door being opened, automatically being shut by door, having the effect resembling swinging door, after can ensureing that door is unlocked, accurately, being timely closed to initial position.

At present, the door closer on market, it comprises body, piston, Compress Spring and gear shaft, and gear shaft is connected with piston drive, and one end of gear shaft is connected with rocking arm, and the other end of rocking arm is connected on the doorframe on door.Rocking arm rotates with the rotation of door, and the rotation of gear shaft makes piston move with the length direction of body, extruding Compress Spring, and then, Compress Spring recovers the motion of resiliency urged piston reverses direction, finally makes a closedown return to original state.But Problems existing has, the door closer after installation, a time of closing is impelled to be the same, for special population, as the crowd of the inconveniences such as old man, child, disabled person, often cause very large puzzlement, people open door also not by time, door is just closed.

Utility model content

For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of door closer solved the problem.

For achieving the above object, the utility model provides following technical scheme:

A kind of door closer, comprise body, piston, Compress Spring and gear shaft, described internal body is provided with installation die cavity, its two ends are provided with and the installing hole installed die cavity and communicate, all end cap is sealedly connected with in two installing holes, described piston, Compress Spring and gear shaft are placed in and are full of in the installation die cavity of hydraulic oil, described Compress Spring one end is connected with piston, the other end is connected with an end cap, described piston is provided with teeth, described gear shaft engages with piston, and make piston axially-movable by the rotation of gear shaft, the two ends of described piston all offer one way valve, the Way out of valve is contrary, described body is also provided with the fuel tap for limiting hydraulic oil flow velocity.

The utility model is set to further: described fuel tap comprises,

A valve, is greater than the buffering after 75 ° for open angle;

No. two valves, for angle of closing the door at 180 ° ~ 15 °, slow down door closing speed.

The utility model is set to further: described fuel tap also comprises, No. three valves, for the door closing speed of adjusting angle at 150 ° ~ 75 °;

No. four valves, for the door closing speed of adjusting angle at 15 ° ~ 0 °.

The utility model is set to further: described Compress Spring is provided with two and is divided into the first energy-stored spring and the second energy-stored spring, the radius of described first energy-stored spring is greater than the radius of the second energy-stored spring, and described second energy-stored spring is interspersed in the first energy-stored spring.

By adopting technique scheme, fuel tap recovers the elastically-deformable time or extends Compress Spring the elastically-deformable time occurs for extending Compress Spring by the flow velocity of hydraulic control oil, a valve is used for avoiding enabling fast to strike wall, No. four valves are used for avoiding generation noise of closing the door, No. two valves and No. three valves are used for making door closing speed slack-off, have time enough to pass through.

Accompanying drawing explanation

Fig. 1 is the schematic diagram 1 of the utility model door closer embodiment;

Fig. 2 is the schematic diagram 2 of the utility model door closer embodiment;

Fig. 3 is the schematic diagram of fuel tap in the utility model.

In figure: 1, body; 11, die cavity is installed; 12, installing hole; 2, piston; 21, teeth; 3, Compress Spring; 31, the first energy-stored spring; 32, the second energy-stored spring; 4, gear shaft; 5, end cap; 6, fuel tap; 61, a valve; 62, No. two valves; 63, No. three valves; 64, No. four valves.

Detailed description of the invention

Referring to figs. 1 through Fig. 3, the utility model door closer embodiment is described further.

A kind of door closer, comprise body 1, piston 2, Compress Spring 3 and gear shaft 4, described body 1 inside is provided with installs die cavity 11, its two ends are provided with and the installing hole 12 installed die cavity 11 and communicate, end cap 5 is all sealedly connected with in two installing holes 12, described piston 2, Compress Spring 3 and gear shaft 4 are placed in and are full of in the installation die cavity 11 of hydraulic oil, described Compress Spring 3 one end is connected with piston 2, the other end is connected with an end cap 5, described piston 2 is provided with teeth 21, described gear shaft 4 engages with piston 2, and make piston 2 axially-movable by the rotation of gear shaft 4, the two ends of described piston 2 all offer one way valve, the Way out of valve is contrary, described body 1 is also provided with the fuel tap 6 for limiting hydraulic oil flow velocity.

Described fuel tap 6 comprises, and a valve 61, is greater than the buffering after 75 ° for open angle; No. two valves 62, for angle of closing the door at 180 ° ~ 15 °, slow down door closing speed.Described fuel tap 6 also comprises, No. three valves 63, for the door closing speed of adjusting angle at 150 ° ~ 75 °; No. four valves 64, for the door closing speed of adjusting angle at 15 ° ~ 0 °.Installation die cavity 11 is divided into three chambers by piston 2, Compress Spring 3 is placed in first chamber, the position that piston 2 is provided with teeth 21 is the second chamber, gap between piston 2 and end cap 5 is the 3rd chamber, a valve is arranged in the oil duct leading to the first chamber, No. two valves 62 and No. three valves 63 are arranged on and lead in the second chamber, and No. four valves are arranged in the oil duct leading to the 3rd chamber.

Described Compress Spring 3 is provided with two and is divided into the first energy-stored spring 31 and the second energy-stored spring 32, and the radius of described first energy-stored spring 31 is greater than the radius of the second energy-stored spring 32, and described second energy-stored spring 32 is interspersed in the first energy-stored spring 31.Compress Spring 3 is made up of two energy-stored springs, and accumulation of energy is larger.

Fuel tap 6 recovers the elastically-deformable time or extends Compress Spring 3 the elastically-deformable time occurs for extending Compress Spring 3 by the flow velocity of hydraulic control oil, a valve 61 strikes wall for avoiding opening the door fast, No. four valves 64 are for avoiding generation noise of closing the door, No. two valves 62 and No. three valves 63, for making door closing speed slack-off, have time enough to pass through.

The above is only preferred embodiment of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. a door closer, comprise body, piston, Compress Spring and gear shaft, described internal body is provided with installation die cavity, its two ends are provided with and the installing hole installed die cavity and communicate, all end cap is sealedly connected with in two installing holes, described piston, Compress Spring and gear shaft are placed in and are full of in the installation die cavity of hydraulic oil, described Compress Spring one end is connected with piston, the other end is connected with an end cap, it is characterized in that: described piston is provided with teeth, described gear shaft engages with piston, and make piston axially-movable by the rotation of gear shaft, the two ends of described piston all offer one way valve, the Way out of valve is contrary, described body is also provided with the fuel tap for limiting hydraulic oil flow velocity.

2. door closer according to claim 1, is characterized in that; Described fuel tap comprises,

A valve, is greater than the buffering after 75 ° for open angle;

3. door closer according to claim 2, is characterized in that: described fuel tap also comprises, No. three valves, for the door closing speed of adjusting angle at 150 ° ~ 75 °;

No. four valves, for the door closing speed of adjusting angle at 15 ° ~ 0 °.

4. the door closer according to claims 1 to 3 any one claim, it is characterized in that: described Compress Spring is provided with two and is divided into the first energy-stored spring and the second energy-stored spring, the radius of described first energy-stored spring is greater than the radius of the second energy-stored spring, and described second energy-stored spring is interspersed in the first energy-stored spring.