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GB2365920A - Up and over door with compression spring - Google Patents

Up and over door with compression spring Download PDF

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Publication number
GB2365920A
GB2365920A GB0020048A GB0020048A GB2365920A GB 2365920 A GB2365920 A GB 2365920A GB 0020048 A GB0020048 A GB 0020048A GB 0020048 A GB0020048 A GB 0020048A GB 2365920 A GB2365920 A GB 2365920A
Authority
GB
United Kingdom
Prior art keywords
door
spring
frame
attached
arm
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.)
Withdrawn
Application number
GB0020048A
Other versions
GB0020048D0 (en
Inventor
Jesse Albert Edward Lukes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LUKES ENGINEERING CO Ltd
Original Assignee
LUKES ENGINEERING CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LUKES ENGINEERING CO Ltd filed Critical LUKES ENGINEERING CO Ltd
Priority to GB0020048A priority Critical patent/GB2365920A/en
Publication of GB0020048D0 publication Critical patent/GB0020048D0/en
Publication of GB2365920A publication Critical patent/GB2365920A/en
Withdrawn legal-status Critical Current

Links

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
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
    • E05F1/1091—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a gas spring
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D13/00—Accessories for sliding or lifting wings, e.g. pulleys, safety catches
    • E05D13/10—Counterbalance devices
    • E05D13/12—Counterbalance devices with springs
    • E05D13/123—Counterbalance devices with springs with compression springs
    • E05D13/1238—Counterbalance devices with springs with compression springs specially adapted for overhead wings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D15/00—Suspension arrangements for wings
    • E05D15/40—Suspension arrangements for wings supported on arms movable in vertical planes
    • E05D15/42—Suspension arrangements for wings supported on arms movable in vertical planes with pivoted arms and horizontally-sliding guides
    • E05D15/425—Suspension arrangements for wings supported on arms movable in vertical planes with pivoted arms and horizontally-sliding guides specially adapted for overhead wings
    • 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
    • E05Y2201/404—Function thereof
    • E05Y2201/416—Function thereof for counterbalancing
    • 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
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/106—Application of doors, windows, wings or fittings thereof for buildings or parts thereof for garages

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)

Abstract

A mechanism for opening an up and over door (1) has a compression spring (7) which can be enclosed in a housing and which is connected by a connecting means (4) to the door so that, when the door is closed, the spring exerts a force on the door in an opening direction. The door may be mounted in frame and the connecting means, preferably an arm, and the spring may be mounted on a plate attached to the frame. The door may be a garage door.

Description

<Desc/Clms Page number 1> Door Mechanism The present invention relates to a mechanism for opening and closing doors, more particularly it relates to a mechanism which incorporates a spring for opening and closing up and over or canopy doors.
Up and over doors are widely used for garages because they provide a wide opening and, when the door is open, it is horizontal to the ground and part of the door can project out in front of the garage. To assist with the opening of the door, various types of tension springs combined with rollers in side channels in the doorframe are used to facilitate opening and closing of the door.
This basic mechanism has been very widely and successfully used, as it is robust and cheap to make and install. However the use of helical tension springs means that, when the spring is in the extended position, there are gaps between the turns of the spring in which fingers etc, could get caught and tension springs fail and need replacing at regular intervals. In addition, if a spring were to fail or break there is a potential for considerable damage to be done by the sudden release of energy and whipping about of the broken spring and the sudden closing of the door which could crush a part of a person, child or pet etc. who got in the way of the closing door. In order to overcome this problem duplicate springs can be used and in some jurisdictions this is now compulsory for all new doors. However the use of duplicate springs increases the cost and complexity of the mechanism.
We have now devised an improved up and over door opening mechanism.
According to the invention there is provided an opening mechanism for an up and over door in which there is a compression spring and a connection means connecting the spring to the door so that when the door is in the closed position the compression spring will exert a force on the door in the opening direction of the door
<Desc/Clms Page number 2>
The invention also provides an opening mechanism for an up and over door which is mounted in a frame in which there is, on each side of the door, an arm one end of which is pivotally attached to the door and which is pivotally attached to the frame, the upper end of the door running in rollers in channels at the top of the frame and in which mechanism there is a spring, the first end of which is attached to a point on or adjacent to the frame and the second end of which is connected to the arm remote from the end of the arm attached to the door, which spring is under compression when the door is in the closed position.
In one embodiment of the invention the first end of the spring is attached to the end of the arm remote from the door beyond the pivot point of the arm and the second end of the spring connected to the frame or garage wall above the point where the arm is attached to the frame.
In this embodiment, when the door is closed the spring is compressed and will press down on the end of the arm and so provide an upward force on the door so that, when the door is lifted the spring assists in this lifting movement, The compression spring can be of the type in which pressure is applied to one end of the spring by the arm acting directly on the end of the spring or by there being a piston below the spring, with a rod extending through the spring, so that a pull on the rod will cause the piston to move upwards and so compress the spring. In the latter type of arrangement the compression spring can readily replace existing tension springs.
The invention further provides a lifting mechanism for an up and over door which is mounted in a frame in which there is, on each side of the door, an arm one end of which is pivotally attached to the door and the other end of which is pivotally attached to the frame, the upper end of the door running in rollers in channels at the
<Desc/Clms Page number 3>
top of the frame and in which mechanism there is a spring the first end of which is pivotally attached to a point on or adjacent the frame and the second end of which is pivotally connected to the door, which spring is under compression when the door is in the closed position.
In another embodiment of this aspect of the invention the first end of the spring is attached to the frame or wall adjacent the frame spaced apart from the point where the arm is attached to the frame and the second end of the spring is attached to the door adjacent and spaced apart from the point where the end of the arm is attached to the door.
The end of the spring and arm are preferably mounted on a plate which is attached to the frame.
Preferably the spring is enclosed in a housing so that the spring is covered and there is no external access to the spring.
The spring can be any conventional compression spring such as an helical spring or rubber etc. which exerts an outward force when compressed.
In order to adjust the compression in the spring there is preferably an adjuster operated from outside the housing, for example the adjuster can comprise a bush mounted on a screw threaded rod, which rod passes through the spring with the bush attached to the rod below the end of the spring, so that turning the rod will cause the bush to move up or down the rod and increase or decrease the compression in the spring.
It is a feature of the invention that, when the spring is mounted in a housing it is not accessible to fingers etc. and, a compression spring cannot fail in the way a tension spring can fail as it could only collapse and stay enclosed in the housing and the door
<Desc/Clms Page number 4>
would not suddenly close. Thus the mechanism of the invention is an improvement in safety of door opening mechanisms compared with the use of the known tension springs.
The invention is illustrated in the accompanying drawings in which:- Fig. I shows a side view of one embodiment of the mechanism Fig. 2 shows a side view of second embodiment of the invention and Fig. 3 shows an enlarged view of the spring used in Fig. 2 Referring to fig. I a garage door (1), which is partly open, has one end (2) which is mounted on rollers in channel (3). There is an arm (4) pivotally mounted at (5) pivotally connected to the door (1) at (6). There is a compression spring (7) pivotally connected to the arm (4) at (8).
When the door is closed, as shown in (I a), the spring (7) is compressed and exerts a downwards force on the arm (4) at the position (8) which generates an upwards force on the door at (6) so that, when the door is to be opened, the door is lifted and the spring will help the door to be raised.
When the door is in the open position, as shown in (I b), the spring is fully extended and the action of the spring is keep the door open.
If a spring arrangement is used, as is shown in fig. 3, in which there is a piston below the spring and movement of the piston compresses the spring, the spring can be positioned below the arm (4).
Referring to fig. 2 the door (10) in the half open position has a compression spring (11) with one end pivotally connected to the door at (12) and the other end pivotally connected to the frame at (16) and an arm (14) with one end connected to the door at
<Desc/Clms Page number 5>
(15), the other end connected to the frame at (17). The connections are shown in detail in fig. 3.
In the closed position (I Ob) the spring (11) is compressed and generates an upwards force on the door at (12a). When the door is raised the effect of the spring is to assist in the raising of the door. When the door is open in position (I b) the spring and arm are in the position as shown and the spring will help keep the door open.
Referring to fig. 3 the plate (20) is fixed to the door (10) in the open position and the spring (11) is connected to plate (20) at pivot point (16) and the arm (14) is connected to plate (20) at pivot point (17). There is a plate (2 1 ) attached to the frame and the spring (11) is attached to plate (2 1) at pivot point (12) as shown and the arm (14) is attached to plate (2 1) at pivot point (15).
The spring structure comprises a casing (25) in which the compression spring (11) fits, there a rod (24) passing down through the spring which is threaded at its lower end and bush (22) is screwed onto the threaded section of the rod (24). There is a nut (23) fixed to the rod as shown so that turning the nut (22) turns the rod (24).
In order to adjust the compression in the spring (11) the nut (23) can be turned, which will cause the bush (22) to travel up or down rod (24) and so adjust the compression of the spring. In use, as the door is closing the rod (24) moves so the bush (22) moves up the casing (25) to compress the spring (24) i.e. the section (26) of the rod (24), which protrudes out of the casing, extends. When the door is closed the spring (24) is compressed. When the door is to be opened, the door is lifted and the effect of the spring is to assist in this action.
<Desc/Clms Page number 6>

Claims (11)

  1. Claims 1. An opening mechanism for an up and over door in which there is a compression spring and a connection means connecting the spring to the door so that when the door is in the closed position the compression spring will exert a force on the door in the opening direction of the door.
  2. 2. An opening mechanism for an up and over door as claimed in claim I which is mounted in a frame in which there is, on each side of the door, an arin one end of which is pivotally attached to the door and which is pivotally attached to the frame, the upper end of the door running in rollers in channels at the top of the frame and in which mechanism there is a spring, the first end of which is attached to a point on or adjacent the frame and the second end of which is connected to the arm remote fi-om the end of the arm attached to the door, which spring is under compression when the door is in the closed position.
  3. 3. An opening mechanism for an up and over door as claimed in claim 2 in which the first end of the spring is attached to the end of the arm remote from the door beyond the pivot point of the arm and the second end of the spring connected to the frame or garage wall above the point where the arm is attached to the frame.
  4. 4. An opening mechanism for an up and over door as claimed in claim 3 in which, when the door is closed, the spring is compressed and will press down on the end of the arm and so provide an upward force on the door so that, when the door is lifted the spring assists in this lifting movement.
  5. 5. An opening mechanism for an up and over door as claimed in claim I which is mounted in a frame in which there is, on each side of the door, an arm one end of which is pivotally attached to the door and the other end of which is pivotally attached to the frame, the upper end of the door running in rollers in channels at the
    <Desc/Clms Page number 7>
    top of the frame and in which mechanism there is a spring the first end of which is pivotally attached to a point on or adjacent the frame and the second end of which is pivotally connected to the door, which spring is under compression when the door is in the closed position.
  6. 6. An opening mechanism for an up and over door as claimed in claim 5 in which the first end of the spring is attached to the frame or wall adjacent the frame and spaced apart from the point where the arm is attached to the frame and the second end of the spring is attached to the door adjacent and spaced apart from point where the end of the arm is attached to the door.
  7. 7. An opening mechanism for an up and over door as claimed in claim 6 or 7 in which the end of the spring and arm are mounted on a plate which is attached to the frame.
  8. 8. An opening mechanism for an up and over door as claimed in any one of the preceding claims in which the spring is enclosed in a housing.
  9. 9. An opening mechanism for an up and over door as claimed in any one of the preceding claims in which there is an adjuster means to adjust the compression in the spring.
  10. 10. An opening mechanism for an up and over door as claimed in claim 9 in which the adjuster means comprises a bush mounted on a screw threaded rod, which rod passes through the spring with the bush attached to the rod below the end of the spring, so that turning the rod will cause the bush to move up or down the rod and increase or decrease the compression in the spring.
  11. 11. An opening mechanism for an up and over door as hereiribefore described with reference to the drawings.
GB0020048A 2000-08-16 2000-08-16 Up and over door with compression spring Withdrawn GB2365920A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0020048A GB2365920A (en) 2000-08-16 2000-08-16 Up and over door with compression spring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0020048A GB2365920A (en) 2000-08-16 2000-08-16 Up and over door with compression spring

Publications (2)

Publication Number Publication Date
GB0020048D0 GB0020048D0 (en) 2000-10-04
GB2365920A true GB2365920A (en) 2002-02-27

Family

ID=9897623

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0020048A Withdrawn GB2365920A (en) 2000-08-16 2000-08-16 Up and over door with compression spring

Country Status (1)

Country Link
GB (1) GB2365920A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1590202A (en) * 1976-11-18 1981-05-28 Tubauto Balancing arrangements for up-and-over doors
US4601131A (en) * 1984-11-02 1986-07-22 Roland Ozols Counterbalance spring means
US4733436A (en) * 1985-06-17 1988-03-29 Exemplar, Inc. Door mechanism spring assembly
US4765026A (en) * 1985-06-17 1988-08-23 Exemplar, Inc. Door mechanism spring assembly
US5711113A (en) * 1994-05-25 1998-01-27 Jkg Snickerikonsult Ab Suspension mechanism for a door construction

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1590202A (en) * 1976-11-18 1981-05-28 Tubauto Balancing arrangements for up-and-over doors
US4601131A (en) * 1984-11-02 1986-07-22 Roland Ozols Counterbalance spring means
US4733436A (en) * 1985-06-17 1988-03-29 Exemplar, Inc. Door mechanism spring assembly
US4765026A (en) * 1985-06-17 1988-08-23 Exemplar, Inc. Door mechanism spring assembly
US5711113A (en) * 1994-05-25 1998-01-27 Jkg Snickerikonsult Ab Suspension mechanism for a door construction

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DE2514841A *

Also Published As

Publication number Publication date
GB0020048D0 (en) 2000-10-04

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)