GB2438417A - A damping device for damping movement of doors - Google Patents
A damping device for damping movement of doors Download PDFInfo
- Publication number
- GB2438417A GB2438417A GB0610537A GB0610537A GB2438417A GB 2438417 A GB2438417 A GB 2438417A GB 0610537 A GB0610537 A GB 0610537A GB 0610537 A GB0610537 A GB 0610537A GB 2438417 A GB2438417 A GB 2438417A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- cylinder
- control device
- damping
- movement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000013016 damping Methods 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000013459 approach Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F5/00—Braking devices, e.g. checks; Stops; Buffers
- E05F5/02—Braking devices, e.g. checks; Stops; Buffers specially for preventing the slamming of swinging wings during final closing movement, e.g. jamb stops
- E05F5/027—Braking devices, e.g. checks; Stops; Buffers specially for preventing the slamming of swinging wings during final closing movement, e.g. jamb stops with closing action
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F5/00—Braking devices, e.g. checks; Stops; Buffers
- E05F5/02—Braking devices, e.g. checks; Stops; Buffers specially for preventing the slamming of swinging wings during final closing movement, e.g. jamb stops
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F5/00—Braking devices, e.g. checks; Stops; Buffers
- E05F5/06—Buffers or stops limiting opening of swinging wings, e.g. floor or wall stops
- E05F5/10—Buffers or stops limiting opening of swinging wings, e.g. floor or wall stops with piston brakes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/08—Vibration-dampers; Shock-absorbers with friction surfaces rectilinearly movable along each other
- F16F7/09—Vibration-dampers; Shock-absorbers with friction surfaces rectilinearly movable along each other in dampers of the cylinder-and-piston type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/0209—Telescopic
- F16F9/0218—Mono-tubular units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3235—Constructional features of cylinders
- F16F9/3242—Constructional features of cylinders of cylinder ends, e.g. caps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3271—Assembly or repair
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
- E05Y2201/47—Springs
- E05Y2201/474—Compression springs
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
- Fluid-Damping Devices (AREA)
Abstract
A damping device comprises a cylinder 11 in which a piston 10 is housed for reciprocating movement. The piston has a skirt 12 which expands resiliently outwardly when the piston is moved in the direction of arrow A to provide a frictional damping force. The interior of the cylinder 11 is undercut at its distal end 13a to allow the skirt 12 to relax.
Description
<p>Improvements in movement controls This invention relates to movement
controls and in particular, though not exclusively, to devices for damping movement of furniture components such as doors.</p>
<p>Devices have been proposed in the form of a piston and cylinder damper to act on furniture doors to prevent their slamming shut. The present invention aims to improve on these known devices.</p>
<p>The invention provides a control device for providing damping to relative movement between elements, eg for closure of a door in a piece of furniture, the device being in the form of a piston and cylinder arrangement with the piston arranged to act in a first direction on a body of air within the cylinder to provide a damping force, wherein the device is designed to enable its assembly by inserting the piston into the cylinder in a direction opposite to said first direction. This arrangement means that assembly of the device does not take place against the damping action, which enables the assembly process to be completed more quickly and easily.</p>
<p>The invention also provides a control device for providing damping to relative movement between elements, eg for closure of a door in a piece of furniture, the device being in the form of a piston and cylinder arrangement with the piston arranged to act in a first direction on a body of air within the cylinder to provide a damping force, wherein the piston and cylinder are configured so as to come out of sealing engagement with each other towards the end of the movement of the piston in said first direction. This arrangement means that when the device is at rest in its retracted position, the seal between the piston and cylinder will be relaxed. In a furniture application, the device will normally be in its retracted position when the door is closed, which is the majority of the time. This arrangement therefore has the benefit of enabling the seal to have a longer working life. A further benefit is that the damping resistance from the device will diminish towards the end of the travel of the piston, ie in the final closing movement of the door.</p>
<p>Both of the above arrangements can be achieved by providing a cylinder which is open at one end to receive the piston and which is then subsequently closed off with a cap.</p>
<p>By way of example, an embodiment of the invention will now be described with reference to the accompanying drawings, in which Figure 1 is a sectional view through a control device according to the invention.</p>
<p>Figure 1 shows a control device according to the present invention. The device is in the form of a piston and cylinder arrangement, with a piston assembly 10 arranged for reciprocal movement in a cylinder 11. At its inner end the piston assembly 10 has a skirt element 12 of a suitably resilient material such as rubber to form a seal with the inner wall 13 of the cylinder 11. A cap 14 is arranged to close off one end of the cylinder 11. As will be understood, when a force acts on the free end of the piston 10 in the direction of arrow A, the body of air that is trapped in the cylinder 11 between the piston and the cap 14 will be compressed, thus creating an opposing damping action. Also, with the arrangement shown, the skirt element 12 will be inflated against the inner wall 13 of the cylinder 11, thus generating friction and adding to the damping action.</p>
<p>In use, the device can be installed in a piece of furniture with the cylinder II mounted in a hole 20 in a door frame 21 so that the door 22 impinges on the free end of the piston 10 towards the end of its closing movement. The action from the device will damp the final closure of the door 22 and thus stop it slamming shut.</p>
<p>A spring 15 is arranged to act on the piston 10 to bias it towards its extended position, as seen in Figure 1, ie in a direction opposite to arrow A. In use, when the door 22 of the piece of furniture is opened, the spring 15 will cause the device to revert to its extended condition, where it will be ready to provide a damping force on the door when it next closes. The main function of the spring 15 is to reset the device, but it also contributes to the damping action of the device.</p>
<p>The cylinder Ii here is deliberately formed with one of its ends open (this is the end that is closed off by the cap 14). This is to allow assembly of the device by insertion of the piston 10 into the cylinder 11 in a direction opposite to arrow A. Inserting the piston 10 in this way will not induce a damping action from the device. If the piston 10 were to be inserted into the cylinder 11 in the direction of arrow A, as is typically the case with prior art devices, this would have to take place against the damping action. The assembly arrangement of the applicant's device therefore offers a significant improvement over conventional devices in terms of ease and speed of assembly.</p>
<p>It will be noted that the inner wall 13 of the cylinder 11 flares out towards its open end (ie towards the end that is closed off by the cap 14). The flared section is indicated by reference I 3a in Figure 1. One reason for this is to enable the skirt element 12 of the piston 10 to relax as the piston approaches its fully retracted position. In normal use of the device, the piston 10 will be in its fully retracted position when the door 22 of the piece of furniture is shut (which will be most of the time). The fact that the seal between the piston and cylinder is able to spend most of its time in a relaxed state means that it will tend to have a much longer working life. Another reason for the flared section l3a is to allow for the release of air pressure in the cylinder 11 towards the end of the travel of the piston 10 in the direction of arrow A. This allows the damping resistance provided by the device to diminish in the final closing movement of the door, in use.</p>
<p>The cylinder 11 here has a bleed hole 16 (shown here in the cap 14). This is to allow for an equalisation of air pressure to either side of the piston 10 when the piston is moved to its fully retracted position. Depending on the design of the flared section 1 3a in the cylinder 11, there may not be a need for the bleed hole 16.</p>
Claims (1)
- <p>CLAIMS</p><p>1. A control device for providing damping to relative movement between elements, the device being in the form of a piston and cylinder arrangement with the piston arranged to act in a first direction on a body of air within the cylinder to provide a damping force, wherein the device is designed to enable its assembly by inserting the piston into the cylinder in a direction opposite to said first direction.</p><p>2. A control device as claimed in claim I wherein the piston and cylinder are configured so as to come out of sealing engagement with each other towards the end of the movement of the piston in said first direction.</p><p>3. A control device for providing damping to relative movement between elements, eg for closure of a door in a piece of furniture, the device being in the form of a piston and cylinder arrangement with the piston arranged to act in a first direction on a body of air within the cylinder to provide a damping force, wherein the piston and cylinder are configured so as to come out of sealing engagement with each other towards the end of the movement of the piston in said first direction.</p><p>4. A control device as claimed in claim 3 wherein the device is designed to enable its assembly by inserting the piston into the cylinder in a direction opposite to said first direction.</p><p>5. A control device as claimed in any preceding claim wherein the cylinder is open at one end to allow insertion of the piston, with the opening being subsequently closed off with a cap.</p><p>6. A control device as claimed in any preceding claim and including a spring acting to bias the piston in a direction opposite to said first direction.</p><p>7. A control device as claimed in any preceding claim wherein said piston comprises a skirt of resiliently flexible material which is designed to be inflatable against the cylinder by the pressure of the body of air trapped within the cylinder when the piston is moved in said first direction, whereby to add to the damping effect produced by the device.</p><p>8. A control device substantially as herein described.</p><p>9. A piece of furniture comprising a control device as claimed in any preceding claim.</p>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0610537A GB2438417B (en) | 2006-05-26 | 2006-05-26 | Improvements in movement controls |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0610537A GB2438417B (en) | 2006-05-26 | 2006-05-26 | Improvements in movement controls |
Publications (3)
Publication Number | Publication Date |
---|---|
GB0610537D0 GB0610537D0 (en) | 2006-07-05 |
GB2438417A true GB2438417A (en) | 2007-11-28 |
GB2438417B GB2438417B (en) | 2010-12-15 |
Family
ID=36687839
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0610537A Expired - Fee Related GB2438417B (en) | 2006-05-26 | 2006-05-26 | Improvements in movement controls |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2438417B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107013119A (en) * | 2017-05-31 | 2017-08-04 | 江苏精盾节能科技有限公司 | A kind of door collides way to play for time with doorframe |
CN107023237A (en) * | 2017-05-31 | 2017-08-08 | 江苏精盾节能科技有限公司 | A kind of door collides buffer structure with doorframe |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020088677A1 (en) * | 2001-01-09 | 2002-07-11 | Helmut Fitz | Braking- and damping device, in particular for movable pieces of furniture |
GB2372796A (en) * | 2001-03-02 | 2002-09-04 | Suscom Internat Ltd | Damper assembly |
US20030213663A1 (en) * | 2002-03-28 | 2003-11-20 | Luciano Salice | Damping apparatus for moving furniture parts |
DE20307522U1 (en) * | 2003-05-14 | 2004-09-16 | Alfit Ag | Device for damping and braking movement of cupboard doors etc has piston cylinder unit with a smaller diameter servo piston longitudinally displaceable in pressure chamber |
-
2006
- 2006-05-26 GB GB0610537A patent/GB2438417B/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020088677A1 (en) * | 2001-01-09 | 2002-07-11 | Helmut Fitz | Braking- and damping device, in particular for movable pieces of furniture |
GB2372796A (en) * | 2001-03-02 | 2002-09-04 | Suscom Internat Ltd | Damper assembly |
US20030213663A1 (en) * | 2002-03-28 | 2003-11-20 | Luciano Salice | Damping apparatus for moving furniture parts |
DE20307522U1 (en) * | 2003-05-14 | 2004-09-16 | Alfit Ag | Device for damping and braking movement of cupboard doors etc has piston cylinder unit with a smaller diameter servo piston longitudinally displaceable in pressure chamber |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107013119A (en) * | 2017-05-31 | 2017-08-04 | 江苏精盾节能科技有限公司 | A kind of door collides way to play for time with doorframe |
CN107023237A (en) * | 2017-05-31 | 2017-08-08 | 江苏精盾节能科技有限公司 | A kind of door collides buffer structure with doorframe |
Also Published As
Publication number | Publication date |
---|---|
GB2438417B (en) | 2010-12-15 |
GB0610537D0 (en) | 2006-07-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20160526 |