GB2275991A - Rotatable control knob eg for setting vertical blinds in double glazing units - Google Patents

Rotatable control knob eg for setting vertical blinds in double glazing units Download PDF

Info

Publication number
GB2275991A
GB2275991A GB9304878A GB9304878A GB2275991A GB 2275991 A GB2275991 A GB 2275991A GB 9304878 A GB9304878 A GB 9304878A GB 9304878 A GB9304878 A GB 9304878A GB 2275991 A GB2275991 A GB 2275991A
Authority
GB
United Kingdom
Prior art keywords
track
casing
ball
cap
annular
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
Application number
GB9304878A
Other versions
GB9304878D0 (en
GB2275991B (en
Inventor
Leslie Ronald Dimmock
Stephen Paul Massingale
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.)
MESSINGALE STEPHEN PAUL
Original Assignee
MESSINGALE STEPHEN PAUL
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 MESSINGALE STEPHEN PAUL filed Critical MESSINGALE STEPHEN PAUL
Priority to GB9521278A priority Critical patent/GB2292444B/en
Priority to GB9304878A priority patent/GB2275991B/en
Publication of GB9304878D0 publication Critical patent/GB9304878D0/en
Publication of GB2275991A publication Critical patent/GB2275991A/en
Application granted granted Critical
Publication of GB2275991B publication Critical patent/GB2275991B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/08—Controlling members for hand actuation by rotary movement, e.g. hand wheels
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/264—Combinations of lamellar blinds with roller shutters, screen windows, windows, or double panes; Lamellar blinds with special devices
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
    • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
    • E06B9/303—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable with ladder-tape
    • E06B9/307—Details of tilting bars and their operation
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
    • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
    • E06B9/32—Operating, guiding, or securing devices therefor
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
    • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
    • E06B9/32—Operating, guiding, or securing devices therefor
    • E06B9/326—Details of cords, e.g. buckles, drawing knobs
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G5/00—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
    • G05G5/04—Stops for limiting movement of members, e.g. adjustable stop
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
    • E06B2009/285—Means for actuating a rod (being tilt rod or lift rod)

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Blinds (AREA)

Abstract

The hand operated knob includes an internal track whose floor is formed with raised and lowered sections 3, 4 separated by stepped end walls 6 and positioned about a central bore 2 dimensional to receive an annular stud end of a sleeved cable 14. A ball 7 is trapped within the lower section 4 of the track and is movable along the length of the lower track by a projection 11 carried by a cap 9 which overlies the raised and lowered tracks 3, 4. The knob is thus able to turn through an angle greater than 360 degrees. <IMAGE>

Description

IMPROVEMENTS IN AND RELATING TO ROTATABLE CONTROL MEMBERS This invention relates to hand operated rotatable members for imparting rotational movement to a component connected to the rotatable member to control the setting thereof. More especially, but not exclusively, the invention relates to hand operated rotatable control knobs for varying the setting of a component connected to the control knob through a rotatable cable encased in a sleeve. The component connected to the rotatable member may comprise a rotatable cable of a control mechanism of a vertical blind located within a double glazing unit.
Double glazing units incorporating vertical blinds are known. In such a unit it is conventional to provide an exterior rotatable hand operated control knob connected via a sheaved cable to an operating mechanism for altering the extent to which the individual blinds obscure the glazed unit. One disadvantage is that the degree of adjustment to the blind settings is limited by the control knob being unable to turn through a full 3600.
The present invention sets out to provide a hand operated rotatable control member which overcomes, or at least alleviates, these disadvantages.
According to the present invention in one aspect there is provided a hand operated rotatable member for imparting rotational movement to a component connected thereto, the member including a casing formed with a central bore for receiving the component or a part thereof and an annular track positioned about the central bore into which 5h projects a protrusion carried by one surface of a cap which closes the open side of the annular track, the casing being rotable relative to the cap, a second track set in the floor of the annular track over a portion of its length in which is trapped a ball whose diameter is greater than the distance between the floors of the two tracks, the arrangement being such that the protrusion can move freely within the annular track as the casing is rotated and into contact with the ball to move the same along the second track, rotation of the member being arrested when the ball makes contact with a stepped end of the second track.
The second track typically extends over approximately one third of the length of the annular track. The ball is preferably a ball bearing of, for example, steel.
The component may comprise a rotatable cable to one end of which is secured an annular stud which locates within the central bore of the casing and is rotatable therewith. The casing may be produced from aluminium. The cap is preferably detachable from the casing. The cap may be produced from a plastics material.
In another aspect, the present invention provides a hand operated knob for controlling the setting of a vertical blind of a double glazing unit, the knob including an internal track whose floor is formed with raised and lowered sections separated by stepped end walls and positioned about a central bore dimensioned to receive an annular stud end of a sleeved cable, and a ball trapped within the lower section of the track and being movable along the length of the lower track by a projection carried by a cap which overlies the raised and lowered tracks.
The invention will now be described by way of example only with reference to the accompanying diagrammatic drawings in which: Figure 1 is a section taken through a rotatable member in accordance with the invention; Figure 2 is an end of view of the member illustrated in Figure 1; Figures 3 and 4 are end and side views respectively of a cap forming part of the rotatable member illustrated in Figures 1 and 2; and Figure 5 is a section taken through the member illustrated when assembled onto a cable.
The rotatable member illustrated in the drawings takes the form of a control knob which includes a casing 1 having a central bore 2. The casing may be formed from aluminium. An annular track 3 is positioned about the central bore 2. The track 3 includes a lower track 4 which typically extends over one third of the length of track 3. One side of the track is bordered by an upstanding collar 5 located about the bore 2, the other side being bordered by the internal wall of the casing 1.
Steps 6 are defined between the lower and upper tracks 3,4 and a ball bearing 7 is positioned within the lower track 4. The ball bearing 7 is trapped within the track 4 by a lip 8 which extends inwardly from the internal wall of the casing.
The diameter of the ball bearing 7 is greater than the height of the steps 6 so that the upper portion of the bearing projects above the level of the floor of the track 3.
The two tracks 3,4 are covered by a cap 9 having a central bore 10 and an inwardly extending protrusion 11.
The cap 9 does not rotate with the casing 1. The length of the protrusion 11 is such that1 as the casing rotates, the protrusion moves around the track 3 and into engagement with the upper portion of the ball bearing 7.
As will be seen from Figure 5, an annular stud 12 secured to one end of a rotatable cable 14 locates within the bore 2 of the casing 1. The stud 12 is retained in position by a screw 15. The cap 9 locates between the stud 12 and the cable 14.
In use, rotation of the casing of the control knob imparts rotational movement to the internal wire of the cable 14 via the stud 12. As the casing 1 is rotated, so the stationary protrusion 11 makes contact with the ball 7 positioned in the track 4. The casing continues to rotate until the ball makes contact with one of the steps 6 whereupon further movement is prevented. It will be appreciated, therefore, that the control knob is able to turn through an angle in excess of 3600, the extent of such movement being dependent upon the length of the track 4.
or mechanisms such as vertical blinds sited within double glazing units, the ability to turn through an angle in excess of 3600 is advantageous.
It will be understood that the foregoing is merely exemplary of rotational members in accordance with the invention and that modifications can readily be made thereto without departing from the true scope of the invention.

Claims (9)

CLAIMS:
1. A hand operated rotatable member for imparting rotational movement to a component connected thereto, the member including a casing formed with a central bore for receiving the component or a part thereof and an annular track positioned about the central bore into which projects a protrusion carried by one surface of a cap which closes the open side of the annular track, the casing being rotatable relative to the cap, a second track set in the floor of the annular track over a portion of its length in which is trapped a ball whose diameter is greater than the distance between the floors of the two tracks, the arrangement being such that the protrusion can move freely within the annular track as the casing is rotated and into contact with the ball to move the same along the second track, rotation of the member being arrested when the ball makes contact with-a~~stepped end of the second track.
2. A member as claimed in Claim 1 wherein the second track extends over approximately one third of the length of the annular track.
3. A member as claimed in Claim 1 or Claim 2 wherein the ball is a ball bearing of steel.
4. A member as claimed in any one of the preceding Claims wherein the component comprises a rotatable cable to one end of which is secured an annular stud which locates within the central bore of the casing and is rotatable therewith.
5. A member as claimed in any one of the preceding Claims wherein the casing is produced from aluminium.
6. A member as claimed in any one of the preceding Claims wherein the cap is detachable from the casing.
7. A member as claimed in any one of the preceding Claims wherein the cap is produced from a plastics material.
8. A hand operated knob for controlling the setting of a vertical blind of a double glazing unit, the knob including an internal track whose floor is formed with raised and lowered sections separated by stepped end walls and positioned about a central bore dimensioned to receive an annular stud end of a sleeved cable, and a ball trapped within the lower section of the track and being movable along the length of the lower track by a projection carried by a cap which overlies the raised and lowered tracks.
9. A hand operated rotatable member for imparting rotational movement-to a component substantially as herein described and as described in Figures 1 to 5 of the accompanying drawings.
GB9304878A 1993-03-10 1993-03-10 Improvements in and relating to rotatable control members Expired - Fee Related GB2275991B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9521278A GB2292444B (en) 1993-03-10 1993-03-10 Improvements in and relating to rotatable control members
GB9304878A GB2275991B (en) 1993-03-10 1993-03-10 Improvements in and relating to rotatable control members

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9304878A GB2275991B (en) 1993-03-10 1993-03-10 Improvements in and relating to rotatable control members

Publications (3)

Publication Number Publication Date
GB9304878D0 GB9304878D0 (en) 1993-04-28
GB2275991A true GB2275991A (en) 1994-09-14
GB2275991B GB2275991B (en) 1996-07-17

Family

ID=10731787

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9521278A Expired - Fee Related GB2292444B (en) 1993-03-10 1993-03-10 Improvements in and relating to rotatable control members
GB9304878A Expired - Fee Related GB2275991B (en) 1993-03-10 1993-03-10 Improvements in and relating to rotatable control members

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB9521278A Expired - Fee Related GB2292444B (en) 1993-03-10 1993-03-10 Improvements in and relating to rotatable control members

Country Status (1)

Country Link
GB (2) GB2292444B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3662618A (en) * 1969-05-31 1972-05-16 Int Standard Electric Corp Instrument knob having integral detent mechanism and panel mount socket means

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3662618A (en) * 1969-05-31 1972-05-16 Int Standard Electric Corp Instrument knob having integral detent mechanism and panel mount socket means

Also Published As

Publication number Publication date
GB2292444A (en) 1996-02-21
GB9304878D0 (en) 1993-04-28
GB2275991B (en) 1996-07-17
GB9521278D0 (en) 1995-12-20
GB2292444B (en) 1996-07-17

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20090310