Ryobi Concealed Door Closer GEOPRO GC-4V...Ryobi Concealed Door Closer GEOPRO GC-4V 20 25 Closing Time from 90 degrees (sec) Temperature Independence 8 0 5 10 15-15 -10 -5 0 5 10 15

Ryobi Concealed Door Closer

GEOPRO GC-4V

Ryobi Concealed Door Closer GEOPRO GC-4V

1

■■■■ Concept of development


RACK AND PINION CLOSER

ADVANTAGE

・・・・Stable Speed Control・・・・Superior Ability against load・・・・180 degree openingDISADVANTAGE

・・・・Limited Closing Force Double Cylinders (Cam

RYOBI ORIGINAL FEATURE

To eliminate disadvantageous points of cam action closer, while keeping advantage of both cam action and rack and Pinion closers.

CAM ACTION CLOSER

ADVANTAGE

・・・・Stronger Closing Force・・・・Lower Opening Force

DISADVANTAGE

・・・・Speed Change

Open

Close

Single Arm Rack & Pinion Single Arm Rack & Pinion Single Arm Rack & Pinion Single Arm Rack & Pinion

・・・・Limited Closing Force ・・・・Bigger Opening Force

Double Cylinders (Cam

Action + Rack & Pinion)

Closer

Cam Action + Rack & PinionCam Action + Rack & PinionCam Action + Rack & PinionCam Action + Rack & Pinion Open

Close

0

10

20

30

40

50

0 40 80 120 160

Cam Action CloserCam Action CloserCam Action CloserCam Action Closer

・・・・Speed Change (Due to Small Oil amount)

・・・・Not More than 160 degreeOpening

Open

Close


■■■■ Mechanism

Ryobi Concealed

Door Closer

GEOPRO GC-4V

CAM ACTION MECHANISM

3

RACK & PINION

MECHANISM


■■■■ Functions & Features

Latching Action Control Valve

LATCHING ACTION

This ensure to close the door firmly

by increasing the closing speed at 2

degree before closed position.

One Touch Joint Function

Arm and Slider can be jointed by

hand without tool. This shortens

the installation time.

2nd Closing Speed Control Valve

1st Closing Speed Control Valve

4

One Touch Joint Function

Spring Power Adjustment

Spring Power Adjustment

By this function, you can set the best closing

power according to the usage circumstances.

1st and 2nd Speed Control Valves

These independent valves enable you to adjust the

closing speed to according to the usage circumstances.

The door can be opened

with small force, and can

be surely closed with

ideal and stable closing

speed.

■■■■ Advantage of new features

5

Specification Ryobi CG-4V Advantage

Inhibit deterioration of oil

Build-in auxiliary spring covers the lack of

closing force.

Speed Adjustment3 speed range The closing speed is adjusted depend on the

φ26、φ23

double cylindersCylinder


Speed Adjustment3 speed range

（1st、2nd、LA）

The closing speed is adjusted depend on the

condition

Temperature

Independence

〇Resin valve

To prevet from unstable speed change due to

the environmental temperature

Closeing Force

(by Spring)〇 Wider adjustment range of torque #1- #4 size

180°Opening 〇 Compatible with existing model can keep easily

Rightward /

Letward

△Individual setting

Due to Double cylinders system, the product is

handed.

※The installation dimentions of righthand and

left hand are same.

5

■■■■ COMPARISON OF SPECIFICATIONS

6

ModelRYOBI

GC-4V

EN1154 Standard

for EN2-4Will be planned in

future

Minimum Door40mm

Speed Adjustment

（3 speed range）

Spring Power

Adjustment

One Touch Join


Minimum Door

Thickness40mm

Speed Stability ○○○○

Speed Control Valves 3 speed range

Maximum

Opening Angle

180°

(according to

door design)

Durability 500,000

Closing Door Torque

(Adjustable)#1～～～～#4

6


■■■■ DATA2. Oil Flow Amount

Oil

Flo

w A

mo

un

t In

sid

e C

yli

nd

ers

OIL FLOW AMOUNT

for GEOPRO CG-4V

7

Opening Angle

Oil

Flo

w A

mo

un

t In

sid

e C

yli

nd

ers

OIL FLOW AMOUNT

for CONVENTIONAL

CAM ACTION

CLOSER

BIG OIL FLOW

AMOUNT

DIFFERENCE

■■■■Improvement of Temperature IndependenceTemperature independence performance is improved by using new material of speed

control valve.

Head of valve is hexagon nut to prevent the damage of head. High expandable material

is used for valve and it makes possible to keep the closing speed even the temperature

change


20

25

Clo

sin

g T

ime fro

m 9

0 d

egre

es (

sec)

Temperature Independence

8

0

5

10

15

20

-15 -10 -5 0 5 10 15 20 25 30 35 40

ﾄﾞﾙﾏ ITS96

ﾘｮｰﾋﾞ GC-4V

TEMPARATURE（ ℃ ）

Clo

sin

g T

ime fro

m 9

0 d

egre

es (

sec)

Competitor D

RYOBI GC-4V

ーーーー Point of Improvementーーーー

Connection is possible without any

tools.

Easier and earlier installation is realized by snap-on mechanism

for the connection between Slider and Arm.

■■■■Other Improvement


9

Disconnection is possible.

Strong connection is kept after 500,000

cycles (Approx. 80N））））

Elastic projection eliminates noise at

operation by keeping zero clearance

between track-rail and arm.

Durability of hold open is 120,000.

Existing Version Improved Version

Elastic

Projection

Only Ryobi offer snap-on connection.

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Documents

Ryobi Concealed Door Closer GEOPRO GC-4V...Ryobi Concealed Door Closer GEOPRO GC-4V 20 25 Closing Time from 90 degrees (sec) Temperature Independence 8 0 5 10 15-15 -10 -5 0 5 10 15