GB2263678A

GB2263678A - Fully automatic car window shade

Info

Publication number: GB2263678A
Application number: GB9201757A
Authority: GB
Inventors: Wen-Hsu Wang
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-01-28
Filing date: 1992-01-28
Publication date: 1993-08-04
Also published as: GB9201757D0

Abstract

A fully automatic car window shade 11 can be used individually or collectively in a vehicle and is operated via a control system 13 integrated with the vehicle's ignition switch 12 and actuated by the vehicle's ignition switch; whether in an extended or retracted mode, the window shade is mounted in such a manner so as to be flush over the vehicle window and each window shade has its own respective actuator and control system circuit, with the control system being connected to electrical current through the ignition switch of the vehicle; thus, when the driver starts the engine of the vehicle, the installed window shade is automatically retracted and, conversely, when the engine of the vehicle is switched off, then the installed window shade automatically extends. <IMAGE>

Description

FULLY AUTOMATIC CAR WINDOW SHADE BACKGROUNI) OF THE INVENTION The invention herein relates to a kind of innovatively designed fully automatic car window shade, and furthermore specifically refers to a type of simplified structure which does not require any external controlling fixtures whatsoever for operation because the opaque car window shade is automatically retracted when the driver boards the host vehicle and automatically extended when the driver leaves the host vehicle; thus, the invention herein is suited for practical utilization as a fully automatic car window shade.

when the windows of a vehicle are treated to shield against the entry of sunlight, the attached layering frequently has the appearance of a glass-like light and heat reflective surface; and furthermore, when applied over the inside of vehicle windows to prevent glare, the attached layering is capable of increasing the amount of shade in the interior of the vehicle.

The major shortcoming of light- and heat-reflective film applied to a glass surface is that it cannot be freely extended and retracted like a window shade, especially with regard to the large surface area of the windscreen at the front, which is the main entry point of sunlight that raises the interior temperature of a vehicle, no anti-glare coating can be applied; moreover, the installation and operation of a conventional bulky car window shade can be cumbersome and in actual practice quite difficult and inconvenient.

With regard to a conventional car window shade, the driver may be in too much of a hurry or perhaps forget to pull down the car window shade; and by the time the driver returns, the interior temperature of the car is very high due to the entry of sunlight, thus the conventional car window shade has been of no practical use; this situation is frequently encountered when utilizing a conventional non-automatic window shade; moreover, no improved version has been observed to date.

SUMMARY OF THE INVENTION In view of the aforementioned situation and consequently in order to improve upon the aforementioned shortcomings of a conventional car window shade, the invention herein relates to a type of fully automatic car window shade which may be installed on both the front and rear windows of a vehicle, moreover, the opaque shades of the invention herein automatically extends when the vehicle is stopped and is of a simplified construction that does not require any external controlling futures whatsoever for operation, whether in terms of extension or retraction; thus the invention herein is a thoroughly innovative device.

The objective of the invention herein is to provide a kind of fully automatic car window shade which is operated via a control system integrated with the host vehicle's ignition switch and actuated by the aforesaid host vehicle's ignition switch; moreover, when the driver starts the engine of the host vehicle, the installed invention herein is automatically retracted and, conversely, when the engine of the host vehicle is switched off, then the installed invention herein automatically extends; thus, the invention herein is suited for practical utilization as a fully automatic car window shade.

Due to simplified construction, the invention herein is of compact dimensions when assembled and therefore can be installed on the front and rear windows of any brand or model of car whatsoever to offer fully automatic control with requiring human manipulation; this unique feature of the invention herein offers a high degree of appli.cable practicality at an economically advantageous cost.

BRIEF DESECRATION OF THE DRAWING Figure 1 is an illustration of the invention herein as installed on the front window of an automobile.

Figure 2 is a schematic diagram of the circuit and the actuating mechanism of the invention herein.

DETAILED DESCRIPTION OF THE INVENTION Referring to HG. 1 and FIG. 2 of the invention herein, one or more fully automatic window shade (11) can be installed, all of which can be operated by the host vehicle's ignition switch (12) connected to the control system (13).

Referring to FIG. 2, each window shade (11) is positioned in a flat manner whether in an extended or a retracted mode and furthermore each window shade (11) is equipped with an extension micro-switch (14) and retracting micro-switch (15) which are connected to the control system (13); electrical current to the control system (13) is supplied by the battery (16) of the host vehicle and switched on by the ignition switch (12).

As indicated in FIG. 2, the aforementioned control system (13) consists of a six-post terminal strip (17), pulley wheel (19) and electric motor (18); when the electrical circuit is energized, the following functions occur: electrical current is conducted to the positive terminal (7) of the coil after the host vehicle's ignition switch (12) closes the circuit with the host vehicles's battery (16); the electrical currant then flows to the negative terminal (8) of the aforementioned coil, which is the negatively charged current from the host vehicles battery (16); electrical current continues to switch post (1) of the six-post terminal strip (17) and the aforesaid switch post (1) is in continuity with switch post (6) of the six-post terminal strip (17), with both the aforementioned switch post (1) and switch post (6) at the negative potential of the host vehicle's battery (16); switch post (2) is wired to a terminal of the extension micro-switch (14) from the six-post terminal strip (17) and also to the positive terminal (7) of the aforementioned coil; switch post (5) is wired to the terminal of the extension rnicro. switch (15) which is connected to the postive terminal of the host vehicle's battery (16); switch post (3) is connected to terminal (A) of the electric motor, while switch post (4) is connected to terminal (B) of the electric motor; the extension and retraction of the window shade (11) is effected by the transparent cord (20), and the transparent cord (20) is fastened to the hook (21) on the window shade (11).

When the driver enters the vehicle and inserts the key into the ignition switch to start the engine, electrical continuity is established between the six-post terminal strip (17) and the positive terminal (7) of the aforementioned coil; at this time the window shade (11) in a fully retracted position, causing micro-switch (14) to be closed (ON) and micro-switch (15) to be opened (OFF); the positive terminal of the battery (16) has electrical continuity through micro-switch (14), switch post (2) on the six-post terminal strip (17), switch post (4) to terminal (B) of the electric motor (18); the negative terminal of the battery (16) has electrical continuity through switch post (6), switch post (1) and switch post (3) to terminal (A) of the electric motor (18), thus causing the electric motor (18) to turn counter-clockwise and unwind the transparent cord (20) on the pulley wheel (19), an action which causes the window shade (11) to retract until contact is made with micro-switch (14); when microswitch (14) is triggered, the flow of electrical current to the electric motor (18) is terminated.

Due to impact of the extended window shade (11) on micro-switch (14), electrical current through micro-switch (14) is terminated, but commences to flow through micro-switch (15).

When the driver stops the vehicle and removes the key from the ignition switch (12), electricity to the six-post terminal strip (17) is terminated, thereby causing continuity in the six-post terminal strip (17) to revert to switch post (3) and switch post (5), and through switch post (4) and switch post (6); meanwhile, the positive terminal of the host vehicle's battery (16) has electrical continuity with terminal of the extension micrb- switch (15), switch post (5), switch post (3) and thence into terminal (A) of the electric motor (18); at the same time, the negative terminal of the host vehicle's battery (16) is in electrical continuity with switch post (6) and switch post (4) and thence into terminal (B) of the electric motor (18j, causing the electric motor (18) to rotate clockwise and wind the transparent cord (20) on pulley wheel (19); this action results in the extension of the window shade (11) until physical contact is made with micro-switch (15), whereupon the electrical current flowing to the electric motor (18) is terminated; when the driver stops the vehicle, the window shade automatically extends over the front and rear windows.

With respect to the control system circuit (13) of the invention herein, if the circuit breaker (K) is tripped open, thus interrupting the flow of electrical current between negative terminal (8) of the coil and the control system circuit (13), then the control system circuit (13) is functionally disabled; under this circumstaifce, the driver can remove the hook (21) on the end of the transparent cord (20), then proceed to use both hands to extend or retract the window shade (11).

Therefore, as presented by the description of the invention herein, the structural composition of the fully automatic window shade is not overly complex and thereby offers convenient installation and does not require the driver to manipulate any extraneous controls to operate since the window shade of the invention herein is automatically actuated; and prior to leaving the vehicle, the window shade of the invention herein extends automatically when the ignition of the host vehicle is switched off, or the invention herein may operated manually as an option; the aforesaid features achieve the objective of improving the conventional car window shade and in an innovative configuration that is both a practical and revolutionary fully automatic car window shade.

Claims

CLAIMS What is claimed is:

1. A kind of fully automatic car window shade, which can be used individually or collectively in a vehicle and which is operated via a control system integrated with the host vehicle's ignition switch and actuated by the aforesaid host vehicle's ignition switch.

2. A kind of fully automatic car window shade wherein each window shade is mounted in such a manner so as to be flush over the vehicle window and each window shade has its own respective actuator and control system circuit, with the aforesaid control system circuit activated by electrical current through the ignition switch of the host vehicle.

3. A kind of fully automatic car window shade in which the control system circuit consists of an electric motor with a shaft-mounted pulley wheel, with the electrical circuit consisting of a coil; one terminal of the aforesaid coil is wired to the positive terminal of the host vehicle's ignition switch, while the second terminal of the aforementioned coil is wired to the negative current circuit of host vehicle; then, there is a six-post terminal strip, with switch post (1) through switch post (6) all in electrical continuity with the aforesaid negative current circuit; switch post (2) is wired to the positive terminal of the retracting micro-switch and the postitive terminal of the coil; switch post (5) is wired to the positive terminal of the extension micro-switch; and switch post (3) and switch post (4) are wired to the respective terminals on the electric motor; a transparent cord of a fixed length is wrapped around the pulley driven by the electric motor; the aforesaid transparent cord connected to the lower edge of the window shade with a hook (21); refer to FIG. 2 for a detailed diagram of the control system of the invention herein.