GB2207185A - Apparatus for operating sliding windows - Google Patents
Apparatus for operating sliding windows Download PDFInfo
- Publication number
- GB2207185A GB2207185A GB08714281A GB8714281A GB2207185A GB 2207185 A GB2207185 A GB 2207185A GB 08714281 A GB08714281 A GB 08714281A GB 8714281 A GB8714281 A GB 8714281A GB 2207185 A GB2207185 A GB 2207185A
- Authority
- GB
- United Kingdom
- Prior art keywords
- linkage
- shaft
- nuts
- lazy tong
- pins
- 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- Withdrawn
Links
- 238000010276 construction Methods 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 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
- E05F11/00—Man-operated mechanisms for operating wings, including those which also operate the fastening
- E05F11/38—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement
- E05F11/46—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement operated by lazy-tongs mechanism
- E05F11/465—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement operated by lazy-tongs mechanism for vehicle windows
-
- 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
- E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
- E05Y2900/53—Type of wing
- E05Y2900/55—Windows
Landscapes
- Power-Operated Mechanisms For Wings (AREA)
Abstract
A lazy tong linkage suitable for operating sliding windows in vehicles, e.g. cars, is operated by a threaded shaft (12) in engagement with a nut (14a) and a bearing member (14b) mounted at opposite pivot points of the linkage so that rotation of the shaft, e.g. by an electric motor, moves the nut and member towards or away from one another to operate the linkage. The nut and member are mounted on pins (8b) which slide in their slots (16), and have cam faces (20) diverging upwardly outwardly from the slots (16). When the linkage is fully closed the face (20) are adjacent projecting outer pivot pins (8a). As the shaft (12) is rotated to move the nut (14a) the faces (20) cam the outer pins (8a) away from the mounting pins (8b) to initially open the linkage. Subsequently the linkage is opened in the usual way. The shaft may be rotated by an electric motor, e.g. mounted on the bearing member (14b) to rise and fall with the linkage. <IMAGE>
Description
APPARATUS FOR OPERATING SLIDING WINDOWS
This invention is concerned with apparatus for operating sliding windows, especially sliding windows in vehicles for example in doors or body panels of motor cars.
Sliding windows are used in vehicles, for example motor cars: in known systems such windows are commonly operated by complicated pulley and belt mechanisms which are not only space consuming but tend to be somewhat unreliable in operation. Such known apparatus for operating sliding windows must not only operate the windows smoothly but, when the windows are closed must be effective to retain the windows in the closed condition or to maintain them at a position to which they have been partially opened.
One of the various objects of the present invention is to provide improved apparatus for operating sliding windows.
There is hereinafter described in detail to illustrate the invention by way of example apparatus for operating sliding windows comprising a lazy tong linkage mounted on a support for a sliding window, for example the panel of a car door, the lazy tong linkage including attaching means for attaching a portion of the lazy tong linkage to the window which is to be operated. The illustrative apparatus also comprises operating means comprising a screw-threaded shaft in threaded engagement with at least one of two nuts mounted at opposite pivot points of the lazy tong linkage whereby rotation of the shaft in a first direction is effective to move the nuts towards one another whereby to extend the lazy tong linkage and rotation of the shaft in the opposite direction is effective to move the nuts apart whereby to close the lazy tong linkage.This operating means is effective to operate the lazy tong linkage to move the attaching means relative to the support on which the linkage is mounted whereby to slide the window between open and closed positions.
The invention provides, in one aspect, apparatus for operating sliding windows comprising a lazy tong linkage mounted on a support for a sliding window and including attaching means for attaching a portion of the lazy tong linkage to the window, the apparatus also comprising operating means for operating the lazy tong linkage to move said attaching means relative to the support whereby to slide th window between open and closed positions.
The invention provides, in another aspect, a lazy tong linkage comprising a screw threaded shaft in threaded engagement with at least one of two nuts mounted at opposite pivot points of the lazy tong linkage whereby rotation of the shaft in a first direction is effective to move the nuts towards one another whereby to extend the lazy tong linkage and rotation of the shaft in the opposite direction is effective to move the nuts apart whereby to close the lazy tong linkage.
In preferred apparatus according to the invention the operating means comprises a screw threaded shaft in threaded engagement with at least one of two nuts mounted at opposite pivot points of the lazy tong linkage, as hereinbefore described with reference to the illustrative apparatus. In the preferred apparatus each nut is mounted on a pin of the linkage, this mounting pin being slidable in a slot of the nut parallel with the shaft, the construction and arrangement being such that when the lazy tong linkage is in a fully closed condition the nuts are spaced apart on the shaft by a maximum distance with the pins at innermost positions in the slots.The nuts comprise inclined cam faces each diverging outwardly from the slot in the nut and the pins of the linkage adjacent the mounting pins project adjacent the cam face of the adjacent nut when the lazy tong linkage is in the fully closed position, whereby when the shaft is first rotated to drive the nuts inwardly towards one another, the slots slide along the mounting pins and the inclined cam faces engage the projecting pins driving them away from the mounting pins and thereby providing initial opening movement of the lazy tong linkage, and when the mounting pins engage the nuts at the outermost ends of the slots, further rotation of the shaft being effective to operate the lazy tong linkage in the usual way.
In a preferred apparatus according to the invention the lazy tong linkage is mounted on the support by means including a support bracket adapted to be mounted on the support in which is supported the central pivot of the linkage which pivotally connects arms of the linkage also pivotted on the nuts.
In preferred apparatus according to the invention, operating means includes, as well as the shaft, drive means which is conveniently in the form of an electric motor operated from the driving position of the vehicle or by a switch adjacent the window to be operated.
Conveniently the motor may be mounted on the support for the window, and may be connected to the shaft to rotate it by a flexible driving connection. Alternatively, the motor may be mounted to directly drive the shaft.
In an alternative apparatus according to the invention the lazy tong linkage may be mounted by means including means on the support mounting the drive shaft itself for rotation, arranged so that the drive shaft does not move relative to the support other than in a rotary fashion.
Various other mounting means for the linkage may be provided in apparatus in accordance with the invention dependent upon the situation in which the apparatus is to be used.
There now follows a detailed description to be read with reference to the accompanying drawings of apparatus for operating sliding windows comprising a lazy tong linkage, embodying the invention. It will be realised that this apparatus has been selected for description to illustrate the invention by way of example.
In the accompanying drawings:
Figure 1 is a view of the illustrative apparatus showing the lazy tong linkage in a partially open condition;
Figure 2 is a side view of the illustrative apparatus in the same condition as it is shown in Figure 1; and
Figure 3 is a view of the illustrative apparatus showing the lazy tong linkage in a fully closed condition.
The illustrative apparatus for operating sliding windows comprises a lazy tong linkage. The linkage comprises a plurality of arms 2, 4 connected to one another by central pivot pins 6 and outer pivot pins 8 to provide a parallel linkage commonly referred to as a lazy tong linkage. The shorter arms 2 are pivotally connected to a central pivot pin 6 at one end thereof and to an outer pivot pin 8 at the other end thereof whilst the long arms 4 are pivotally mounted on a central pivot pin at a central region of the arm 4 and pivotally connected to adjacent arms at outer end portions thereof by outer pivot pins 8 at either end of the long arms 4.
In the illustrative apparatus the lazy tong linkage is mounted on a support for a sliding window, for example the body panels of a car door, by means of a bracket 10 which is attached to the car door. The bracket 10 mounts one of the central pivot pins 6a to which two short arms 2a are pivotted, the other ends of the arms 2a being pivotally mounted on mounting pins 8b by which the arms 2a are pivotally connected to long arms 4. Nuts 14 are also mounted on the mounting pins 8b as will hereinafter be described. Rotatable shaft 12 of operating means of the illustrative apparatus is threaded into one of the nuts 14a and is rotatably mounted in bearings 18 in the other nut 14b.
An attaching plate 24 is mounted on the uppermost one of the central pivot pins 6 and is adapted to be attached to a sliding window by suitable means, for example by rivets passing through holes 26 in the attaching plate 24.
The nuts 14a, 14b are slidingly mounted on the mounting pins 8b, which are received in slots 16 in the nuts, the slots 16 being disposed parallel to the shaft 12. The nuts further comprise inclined cam faces 20 which diverge outwardly upwardly from the slots 16 of the nuts 14a, 14b on which the cam face is provided. The pivot pins 8a of the lazy tong linkage adjacent the mounting pins 8b comprise projecting portions (see especially
Figure 2). As can be seep from Figure 3 the pivot pins 8 are closely adjacent the inclined cam faces 20 when the lazy tong linkage is in a fully closed condition.
When the lazy tong linkage of the illustrative apparatus is in the fully closed condition as it is shown in Figure 3, the mounting pins 8b are at the innermost extremities of the slots 16, while the nuts 14a, 14b are spaced apart at a maximum distance. By rotation of the shafts 12 the nut 14a is screwed along the shaft 12 towards the driving connection 22 and thus the nuts 14a, 14b are moved towards one another, the bearing 18 permitting rotation of the shaft relative to the nut 14b but retaining the nut in position lengthwise of the shaft.
Initially the movement of the nuts 14a, 14b towards one another will merely cause the nuts to slide on the mounting pins 8b towards one another until such time as the mounting pins engage the nuts 14a, 14b at the outermost extremities of the slots 16. This inward motion of the nuts 14a, 14b relative to the mounting pins Sb and the other outer pivot pins 8, causes the cam faces 20 to engage the projecting portions of the projecting pins 8a.
Inward movement of the nuts thereby urges, by means of the cam faces 20, the pins 8a, 8b apart thereby effecting an initial opening movement of the lazy tong linkage. The provision of the cam faces 20 for this purpose is especially helpful in that the opening force which can be applied to a lazy tong linkage directly by moving the outer pivot pins towards one another when it is in its fully closed condition is relatively small: the provision of the cam faces 20 facilitates this initial opening motion considerably.
When the nuts 14a, 14b have slid sufficiently towards one another for the mounting pins 8b to engage the nuts 14a, 14b at the outermost extremities of the slots 16 the nuts continue to drive towards one another urging the mounting pins 8b towards one another and thereby opening and extending the lazy tong linkage in the usual way, thus driving the attaching plate upwardly away from the mounting bracket and thereby closing the window to which the mounting plate is attached. The linkage is shown in Figure 1 in a partially open condition with the mounting pins 8b engaging the nuts 14a, 14b at the outermost extremities of the slot 16.
When the window is to be opened the shaft is rotated in the opposite directions to drive the nuts 14a, 14b apart, the initial effect of this will be to relieve the pressure on the window and to allow the window to fall under its own weight with the mounting pins 8b still engaging the nut at the outermost extremities of the slot 16.When the nuts have almost reached their fully spaced condition, the projecting parts of the pins Ba will engage the cam faces 20 at outermost extremities thereof and the nuts will slide relative to the mounting pins Sb, the pins Sa travelling downwardly on the cam faces 20 until the mounting pins 8b are at the innermost positions in the slots 16 where the lazy tong linkage is fully closed and the window to. which it is attached is fully opened.Should the window jam when it is being opened, the nuts will slide along the mounting pins Sb until the pins 8b engage the nuts 14a, 14b at the innermost extremities of the slots 16 and thereafter the lazy tong linkage will be positively closed by action of the rotating shaft until the window is released sufficiently for it to again fall under its own weight where it will return the mounting pins Sb along the slots 16 until they engage the outermost ends of the slots 16.
The operating means of the illustrative apparatus also comprises drive means, suitably an electric motor mounted on the vehicle body panels in which the window is mounted for sliding movement. The drive means, e.g. the electric motor is connected to the driving connection 22 of the rotatable shaft 12 by suitable means, for example a flexible driving connection. Alternatively, the drive means may be mounted on the nut 14b to connect with the driving connection 22 of the shaft directly: in this case the electrical leads connecting the electric motor to the power supply will need to be flexible to accommodate the upward and downward movement of the drive shaft 12 relative to the vehicle framework. Switches to operate the drive means may be positioned at suitable points for example adjacent the driver's position and adjacent the window to be opened. Other drive means, for example handles operated manually may be connected by suitable driving connections to rotate the drive shaft 12 if desired.
Although only the nut 14a is threaded to the rotatable shaft 12 in the illustrative apparatus, the nuts 14a, 14b may both if desired be in threaded engagement with the rotatable shaft 12, the shaft 12 in this case having threads of opposite hands at either side of the centre of the shaft 12.
The illustrative apparatus is of simple and efficient construction and is sufficiently compact to be mounted in a relatively small spaces in vehicle bodies.
The illustrative apparatus is also reliable in operation by comparison with certain previously known mechanisms for operating sliding windows.
Claims (8)
1. Apparatus for operating sliding windows comprising a lazy tong linkage mounted on a support for a sliding window and including attaching means for attaching a portion of the lazy tong linkage to the window, the apparatus also comprising operating means for operating the lazy tong linkage to move said attaching means relative to the support whereby to slide the window between open and closed positions.
2. Apparatus according to Claim 1 wherein said operating means comprises a screw threaded shaft in threaded engagement with at least one of two nuts mounted at opposite pivot points of the lazy tong linkage whereby rotation of the shaft in a first direction is effective to move the nuts towards one another whereby to extend the lazy tong linkage and rotation of the shaft in the opposite direction is effective to move the nuts apart whereby to close the lazy tong linkage.
3. Apparatus according to Claim 2 wherein each nut is mounted on a pin of the linkage this mounting pin being slidable in a slot of the nut parallel with the shaft, the construction and arrangement being such that when the lazy tong linkage is in a fully closed condition the nuts are spaced apart on the shaft by a maximum distance with the pins at innermost positions in the slots, the nuts comprising inclined cam faces each diverging outwardly from the slot in the nut and the pins of the linkage adjacent the mounting pins projecting adjacent the cam face of the adjacent nut when the lazy tong linkage is in the fully closed position, whereby when the shaft is first rotated to drive the nuts inwardly towards one another, the slots slide along the mounting pins and the inclined cam faces engage the projecting pins driving them away from the mounting pins thereby providing initial opening movement of the lazy tong linkage, and when the mounting pins engage the nuts at the outermost ends of the slots, further rotation of the shaft is effective to operate the lazy tong linkage in the usual way.
4. Apparatus according to either one of Claims 2 and 3 comprising means mounting the lazy tong linkage on the support including a support bracket adapted to be mounted on the support in which is supported the central pivot of the linkage which pivotally connects arms of the linkage also pivotted on the nuts.
5. Apparatus according to Claim 4 wherein the operating means also comprises drive means mounted on the support and a flexible driving connection connecting the drive means and the shaft.
6. Apparatus according to Claim 4 wherein the operating means comprises drive means mounted directly on the shaft to rotate the shaft.
7. Apparatus according to either one of Claims 2 and 3 comprising means mounting the lazy tong linkage on the support including means on the support mounting the drive shaft for rotation.
8. A lazy tong linkage comprising a screw threaded shaft in threaded engagement with at least one of two nuts mounted at opposite pivot points of the lazy tong linkage whereby rotation of the shaft in a first direction is effective to move the nuts towards one another whereby to extend the lazy tong linkage and rotation of the shaft in the opposite direction is effective to move the nuts apart whereby to close the lazy tong linkage wherein each nut is mounted on a mounting pin of the linkage slidable in a slot of the nut parallel with the shaft, the construction and arrangement being such that when the lazy tong linkage is in a fully closed condition the nuts are spaced apart on the shaft by a maximum distance with the pins at innermost positions in the slots, the nuts comprising inclined cam faces each diverging outwardly from the slot in the nut and the pins of the linkage adjacent the mounting pins projecting adjacent the cam face of the adjacent nut when the lazy tong linkage is in the fully closed position, whereby when the shaft is first rotated to drive the nuts inwardly towards one another, the slots slide along the mounting pins and the inclined cam faces engage the projecting pins driving them away from the mounting pins and thereby providing initial opening movement of the lazy tong linkage, and when the mounting pins engage the nuts at the outermost ends of the slots, further rotation of the shaft is effective to operate the lazy tong linkage in the usual way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08714281A GB2207185A (en) | 1987-06-18 | 1987-06-18 | Apparatus for operating sliding windows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08714281A GB2207185A (en) | 1987-06-18 | 1987-06-18 | Apparatus for operating sliding windows |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8714281D0 GB8714281D0 (en) | 1987-07-22 |
| GB2207185A true GB2207185A (en) | 1989-01-25 |
Family
ID=10619139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08714281A Withdrawn GB2207185A (en) | 1987-06-18 | 1987-06-18 | Apparatus for operating sliding windows |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2207185A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB207430A (en) * | 1923-01-30 | 1923-11-29 | Arthur Watkinson | Improvements in or relating to window-lifting mechanisms |
| GB280052A (en) * | 1926-12-10 | 1927-11-10 | William Jennings | Improvements relating to screw-and-nut gearing |
| GB366007A (en) * | 1930-01-14 | 1932-01-18 | Umberto Galli | An improved lifting jack for motor vehicles |
| GB887675A (en) * | 1959-05-11 | 1962-01-24 | Wilmot Breeden Ltd | Vehicle window regulators |
| GB944860A (en) * | 1961-09-19 | 1963-12-18 | Wilmot Breeden Ltd | Improvements in or relating to window regulators |
| EP0018914A1 (en) * | 1979-05-04 | 1980-11-12 | PAUMELLERIE ELECTRIQUE Société dite: | Window lifting mechanism |
-
1987
- 1987-06-18 GB GB08714281A patent/GB2207185A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB207430A (en) * | 1923-01-30 | 1923-11-29 | Arthur Watkinson | Improvements in or relating to window-lifting mechanisms |
| GB280052A (en) * | 1926-12-10 | 1927-11-10 | William Jennings | Improvements relating to screw-and-nut gearing |
| GB366007A (en) * | 1930-01-14 | 1932-01-18 | Umberto Galli | An improved lifting jack for motor vehicles |
| GB887675A (en) * | 1959-05-11 | 1962-01-24 | Wilmot Breeden Ltd | Vehicle window regulators |
| GB944860A (en) * | 1961-09-19 | 1963-12-18 | Wilmot Breeden Ltd | Improvements in or relating to window regulators |
| EP0018914A1 (en) * | 1979-05-04 | 1980-11-12 | PAUMELLERIE ELECTRIQUE Société dite: | Window lifting mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8714281D0 (en) | 1987-07-22 |
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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) |