WO1998000302A1

WO1998000302A1 - A shade for a windshield of an automobile

Info

Publication number: WO1998000302A1
Application number: PCT/CN1997/000066
Authority: WO
Inventors: Jinxu Han
Original assignee: Jinxu Han
Priority date: 1996-06-27
Filing date: 1997-06-27
Publication date: 1998-01-08
Also published as: CN2249691Y; AU3252997A

Abstract

A shade for a windshield of an automotible consists of left and right guide rods, left and right movable sleeves which slide on the guide rods, an upper rod with its two ends respectively fixed on the left and right sleeves, a core shaft which is located inside a hollow shaft, a curtain with its lower edge winded round the hollow shaft and its upper edge fixed on the upper rod, and a driving device for moving the sleeves.

Description

TECHNICAL FIELD

The invention relates to an additional device for automobiles, in particular to an automobile windshield shading device. Background technique

At present, a folding sunshade for a car windshield is a folding baffle, which has no fixed connection with an upper part of a car. When in use, it is opened and placed on the windshield. That is to prevent people outside the car from peeping into the car and avoid direct sunlight, and fold it in the car when not in use. The disadvantage is that it is easy to lose or temporarily cannot be found when placed, and it needs to be opened and put in place when in use, so it is very troublesome to use and easy to lose. Document US5409284A discloses a retractable sunshade device for car windows. It has a sunshade, which can be wound on a rotatable reel to be in a contracted state, and it can also be unrolled from the reel and unfolded to show an unfolded state. Two guide rails are provided on both sides of the sunshade. The gripping bar which can be grasped by the user is fixed on the free edge of the sunshade and connected with the two guide rails. Each rack is provided with a rack, and two gears on the reel are respectively connected with the two The racks on the two guide rails can be engaged. A gear can be driven by a motor to move the racks that mesh with the gears, so that the sunshade can be unfolded or the sunshade can be rolled on the reel. You can also use the motor without using a hand Grasp the grasping bar to pull the sunshade open, and use a stop device to position the unfolded sunshade; the winding shaft is rotated by a winding spring provided on the winding shaft The sunshade is wound on a reel. In order to open or roll the sunshade on the reel, the sunshade device disclosed in this document needs to move a longer rail, resulting in the need to occupy a large space. To install the sunshade device In addition, the roof structure needs to be modified. In addition, the reel of the sunshade device is a straight shaft, and the unfolded shading curtain is difficult to match the curve shape of the window glass, and as a result, the sunshade cannot be well shaded. The two guide rails must be parallel, and the sunshade is rectangular, so that the sunshade device cannot satisfactorily cover the trapezoidal window. In fact, most common windshields are trapezoidal. Summary of the invention

An object of the present invention is to provide an automobile windshield light-shielding device which is installed in an automobile, is convenient to use, and can well achieve light shielding.

In order to achieve the above object, the light-shielding device provided by the present invention includes a light-shielding curtain having an upper edge and a lower edge, and an installation positioning and pulling mechanism, and the light-shielding curtain is disposed on the installation positioning and pulling mechanism, wherein the installation positioning The pull mechanism has: a retractable upper cross bar, the upper edge of the shade is fixed on the upper cross pestle; a left guide bar and a right guide bar; a left moving sleeve and a right Side moving sleeves, which are respectively movably mounted on the left and right guide rods, and the left and right ends of the upper crossbar are respectively fastened to the left and right moving sleeves; a core shaft; A left mandrel support and a right mandrel support, the mandrels are fixedly supported on the two mandrel supports, and the left mandrel support and the right mandrel support are respectively on a car windshield The lower left corner and the lower right corner are fixedly arranged on the vehicle body; a roller shutter shaft, which can rotate relative to the core shaft, and the lower edge of the shade is fixed on the roller shutter shaft; a left side guide base and A right-hand guide base; a left-hand guide pestle upper support base and a right-hand guide upper support base, which are fixed on the vehicle body near the upper left corner and the upper right corner of the windshield, respectively, The upper and lower ends of the guide rod are respectively connected with the upper support base of the left guide rod and the base of the left guide pestle, and the upper and lower ends of the right guide rod are respectively connected with the upper support seat and the right guide of the right guide rod. The guide rod bases are connected; two coil springs, when the shade is in an unfolded state, the two coil springs tend to rotate the roller shutter shaft; and a moving sleeve drives the positioning mechanism. Overview of the drawings

The invention is further described below with reference to the drawings and embodiments.

FIG. 1 is a schematic diagram of the overall structure of a light shielding device according to the present invention;

2 is a partial view of a roller shutter shaft structure of the light shielding device shown in FIG. 1 and an assembly schematic diagram of a right end and a right side mandrel support;

3 is a schematic structural diagram of a guide rod base of the light shielding device shown in FIG. 1;

4 is a schematic diagram of a transmission system of the present invention;

5 is a schematic structural diagram of a driving sleeve positioning mechanism of the present invention;

FIG. 6 is a schematic diagram of a moving sleeve driving and positioning mechanism according to another embodiment of the present invention Best Mode of the Invention

Fig. 1 schematically shows the overall structure of a light shielding device according to the present invention. It should be noted that the up, down, left, and right directions in the following description refer to the orientation in FIG. 1.

First embodiment

The light-shielding device of the present invention shown in FIG. 1 includes a light-shielding curtain 1 (made of an opaque soft material) having an upper edge and a lower edge, and a mounting positioning and pulling mechanism. . The installation, positioning and pulling mechanism has a retractable sunshade upper crossbar 2, a left guide rod 12 and a right guide rod 5, a left-side moving sleeve 13 which is slidably matched with the left and right guide rods, and Right moving sleeve 4, mandrel 24 (see Fig. 2), left mandrel support 10 and right mandrel support 8, roller shutter shaft 6 rotatable relative to the mandrel 24, left guide base 11 And right guide rod base 7, and left guide rod upper support base 14 and right guide rod upper support base 3. The upper and lower ends of the left guide pestle 12 are fastened to the left guide rod upper support base 14 and the left guide rod base 11 respectively, and the upper and lower ends of the right guide rod 5 are respectively supported on the right guide rod. The seat 3 and the right guide rod base 7 are fastened and connected. The left and right ends of the cross bar 2 on the shade are fastened (such as screw fastening) on the left moving sleeve 13 and the right moving sleeve 4 respectively. The left mandrel support 10 and the right mandrel support 8 are fixedly arranged near the lower left corner and the lower right corner of the automobile windshield 15 (such as screw fastening, suction cup adsorption, bonding, or snap-in) on the vehicle body 9 . Upper support base of left guide rod 14 and upper support base of right guide rod 3 are fixed on the vehicle body near the upper left corner and upper right corner of the car windshield 15 (such as screw fastening, bonding, snap-on or suction cup suction). The left guide base 11, the right guide base 7 and the left mandrel support 10, and the right mandrel support 8 can be designed as an integrated structure, and the lower edge of the shade 1 is fixed to the roller shutter shaft 6. The upper edge is fixed on the crossbar 2 on the shade.

Referring to FIGS. 1 and 2, the roller blind shaft 6 is composed of a plurality of cylindrical (such as cylindrical, prismatic cylindrical) roller blind members 17 that mesh with each other and are rotatably sleeved on the core shaft 24. Umbrella teeth are made on both end surfaces of each roller blind member 17. The left and right ends of the mandrel 24 are supported by the left mandrel support 10 and the right mandrel support 8 respectively, and the mandrel 24 cannot be rotated and moved relative to the two bases. At the left and right ends of the mandrel 24, an axial load bearing 18 is installed. In FIG. 2, the right ferrule of the bearing 18 is fixed to the mandrel 24, and the left ferrule is free to rotate relative to the mandrel 24. An umbrella tooth 19 is formed on the left end surface of the left sleeve 轴承 of the bearing 18. The umbrella teeth 20 provided on the right end surface of the cylindrical (cylindrical) roller shutter member 17 at the right end of the roller shutter shaft 6 The side teeth 19) mesh with each other. It should be noted that the left end surface of the bearing 18 and the right end surface of the rightmost roller shutter 17 can be made flat. In the right-side mandrel support 8, a coil spring 16 is provided which can tend to automatically roll the roller shutter shaft 6. One end of the coil spring 16 is fixed to the machine base 8, and the other end is fixed to the roller shutter member 17. The roller blind shaft 6 and the shade upper cross bar 2 may be a straight shaft and a straight rod, respectively, or may be an arc-shaped shaft and an arc-shaped bar, respectively. In the figure, the roller blind shaft 6 is an arc-shaped shaft, The rods 2 are arc-shaped rods, and their respective arcs coincide with the arc surface of the automobile windshield 15. The roller shutter member can be made of rubber, plastic, resin, nylon, wood and other materials to reduce the noise during the operation of the roller shutter shaft and reduce the weight. The assembly relationship between the left and left end cylindrical roller shutter members of the mandrel 24 of the roller shutter shaft 6 and the left mandrel support 10 is the same as that described above, that is, the left and right structures are symmetrical.

In Figs. 3-5, an implementation form of the moving sleeve driving and positioning mechanism of the present invention is shown. In the schematic diagram shown in FIG. 5, the left guide rod 12 is a hollow tube-shaped member, and the left moving sleeve 13 is slidably engaged with its outer surface. A narrow groove 34 is opened at the upper end of the left guide rod 12 along its length direction. . Near the narrow slot 34, a shaft is fixed to the guide rod 12 in a longitudinal direction perpendicular to the guide rod 12. A fixed pulley 32 is rotatably mounted on the shaft, and a part of the fixed pulley 32 extends into the narrow groove 34. One end of the flexible cord 33 is fastened to the left moving sleeve 13. The soft rope 33 crosses the fixed pulley 32, and then passes through the axial cavity of the left guide rod 12 from top to bottom, and is coiled on the reel 25 in the left guide rod base 11 (see FIG. 3) The other end of the soft rope 33 is fastened to the reel 25. The reel 25 is rotatably matched with the left guide base 11 and a transmission gear 26 is provided at one end thereof. Between the reel 25 and the soft rope access port 23 on the left guide base 11 There is a flexible cord guide tube 22 in the cavity which can swing with the flexible cord 33 at its lower end. The structure of the right guide base 7, the assembly relationship between the right guide 5 and the right moving sleeve 3, and their respective internal structures are the same as those of the above-mentioned left component, and will not be repeated here. Fig. 4 shows a schematic diagram of a transmission system according to the present invention. The motor 27 is decelerated by a gear transmission mechanism 43 having a worm-worm gear pair for deceleration, and drives the left and right transmission gears 26 and the left and right reels 25 to rotate synchronously, thereby pulling the soft rope 33 to make the upper crossbar 12 moves and pulls the shade 1. It is particularly advantageous that the upper crossbar 12 can be stopped at a corresponding position as long as the motor 27 is switched off. The reason for this is that, in the gear shifting mechanism 43, the lifting angle of the worm in the worm-worm gear pair for deceleration is designed to be smaller than the friction angle, so that self-locking occurs when the worm gear is active. Second embodiment

The second embodiment of the present invention is different from the first embodiment in that the upper cross bar is not pulled by the above-mentioned soft rope, fixed pulley and reel, but the upper cross bar is moved by a screw drive. Specifically, the guide rod is changed to a screw that is rotatably supported on the upper support base and the base, and the moving sleeve is made into a nut with a screw hole. By using a motor or manual human power to drive the screw to rotate synchronously through the transmission system, the rotation of the nut relative to the screw can be achieved, that is, the nut moves in the axial direction of the screw, thereby driving the upper crossbar to move and pulling the shade. According to the present invention, the screw can be made with multiple threads to obtain a larger thread lift angle and lead, so as to achieve rapid lifting of the upper cross bar. At this time, the position of the upper cross bar is still locked by the worm-worm gear motion pair in the transmission system.

Third embodiment

The third embodiment of the present invention is different from the first embodiment in that the positioning mechanism is not driven by the above-mentioned moving sleeve using a motor and a transmission system, but a manual push-pull mechanism is adopted. The upper cross bar is directly pulled by a person, and the positioning of the upper cross bar uses a positioning device. In the schematic diagram shown in FIG. 6, a plurality of recesses 44 for positioning are provided on an outer surface of the left guide rod 12 which can be a garden pole or a prism rod near the upper end thereof, and is provided on the left moving sleeve 13 A positioning device 46 is provided, and a radial hole 45 is formed in the moving sleeve 13. The positioning device 46 has: a housing 50 fixed to the moving sleeve 13, which has an inner hole 51 and a notch 52; an L-shaped locking lever 47 provided in the housing 50, and an arm of which is inserted into the radial direction The hole 31, and the other arm thereof extends out of the above-mentioned notch 52; a spring 48 is installed in the housing 50 and biases the lock lever 47. When the radial hole 31 is aligned with the recess 44 on the guide rod 12, the lock lever 47 is inserted into the recess 44 under the bias of the spring 48, thereby locking the position of the upper crossbar 12. When unlocking is needed, the arm pushing the protruding gap 52 of the locking lever 47 is overcome by hand, so that the locking lever 47 exits the recess 44, so that the moving sleeve 13 can move relative to the guide lever 12. At this time, the roller blind shaft 6 is rotated by the coil spring 16 to wind the light curtain 1 around the shaft. The light shielding device according to the present invention has a left-right symmetrical structure, so the right-side structure is not described here. Industrial applicability

Because the light-shielding device of the present invention adopts the above structure, the support seat, the base and the mandrel support of the left and right guide rods are fixed on the vehicle body, and the moving sleeve drives the upper bar and the curtain of the shade to move, and the shutter shaft can be automatically Rewind, so it does not cause the problem of being lost or temporarily unavailable due to left-hand placement. Can be used to block direct sunlight and prevent outsiders from entering the car Peeping guarantees the safety of the stored vehicle. After the roller shutter shaft adopts the cylindrical roller shutter meshing and docking structure, the shape of the sunshade and the isolated surface of the windshield of the car can be adapted to achieve a satisfactory light-shielding effect. In addition, the crossbar on the shade of the present invention can be positioned at a desired position as needed, to achieve the effect of partial shading.

Claims

Rights request

1. A windshield light shielding device for an automobile, comprising a light shielding curtain (1) having an upper edge and a lower edge, and an installation positioning and pulling mechanism, wherein the light shielding curtain (1) is arranged on the installation positioning and pulling mechanism, It is characterized in that the installation positioning and pulling mechanism has:

A retractable upper cross bar (2), and the upper edge of the shade is fixed on the upper cross bar (2);

A left-side guide (12) and a right-side guide (5);

A left moving sleeve (13) and a right moving sleeve (4) are respectively movably mounted on the left and right guide pestles, and the left and right ends of the upper crossbar (2) are respectively tightly attached. Fixed on the left moving sleeve (13) and the right moving sleeve (4);

A mandrel (24);

A left mandrel support (10) and a right mandrel support (8), the mandrel (24) is fixedly supported on the two mandrel supports, and the left mandrel support (10) And the right mandrel support (8) are fixed on the vehicle body (9) near the lower left corner and the lower right corner of the windshield (15) of the car;

A roller shutter shaft (6), which can be rotated relative to the mandrel (24), and the lower edge of the shade (1) is fixed on the roller shutter shaft (6);

A left guide rod base (11) and a right guide rod base (7); a left guide rod upper support base (14) and a right guide rod upper support base (3), which are respectively The vehicle body (9) is fixedly arranged near the upper left corner and the upper right corner of the windshield (15), the upper and lower ends of the left guide rod (12) and the upper support seat (14) and the left of the left guide rod, respectively. The side guide bar base (11) is connected, and the upper and lower ends of the right side guide bar (5) are connected to the right side guide bar upper support seat (3) and the right side guide bar base (7), respectively;

Two coil springs (16), when the shade (1) is in an unfolded state, the two coil springs tend to rotate the roller shutter shaft (6); and

The moving sleeve drives the positioning mechanism.

2. The windshield shading device for a car according to claim 1, characterized in that the roller shutter shaft (6) and the crossbar (2) on the shutter are arc-shaped, and each of the arcs is related to the automobile The curved surfaces of the windshield (15) coincide with each other, and the roller shutter shaft (6) passes through a plurality of The umbrella teeth (20) are meshed with each other and can be rotatably sleeved on the mandrel (24) by a roller shutter member (17), and the left and right ends of the roller shutter shaft (6) are respectively provided and mounted on the roller shutter member (6). An axial bearing (18) on the mandrel (24), one end of each of the two coil springs (16) is fixed to the mandrel support, and the other end of each of the two coil springs (16) is fixed to the roll Curtains (17).

3. The windshield shading device for an automobile according to claim 2, wherein the driving and positioning mechanism of the moving sleeve is a soft rope pulling mechanism, and the left and right two guides constituting the soft rope pulling mechanism The rod is a hollow tube-shaped member, and the corresponding moving sleeve is slidably matched with its outer surface. A fixed pulley (32) is provided in each of the upper and lower narrow ends of the two guide rods along the length direction. ), One end of each of the two soft ropes (33) is fastened to the left moving sleeve (13) and the right moving sleeve (4) respectively, and the soft rope (33) crosses the fixed pulley (32), and then They pass through the axial cavity of the guide rod (12, 5) from top to bottom, and are coiled on a reel (25) in the guide rod base (11, 7). Each of the flexible cords (33) The other ends are respectively fastened to the reel wheels (25), and each of the reel wheels (25) is rotationally matched with the corresponding guide rod base, and one end is provided with a transmission gear (26), and a motor passes a gear A speed changing mechanism (43) synchronously driving the left and right coils A driving gear (25) (26) is rotated, thereby pulling the cord (33), the gear change mechanism

(43) has at least one worm-worm wheel motion pair, wherein the lifting angle of the worm is designed to be smaller than the friction angle.

4. The windshield shading device for an automobile according to claim 1 or 2, characterized in that a plurality of recesses are respectively provided on the outer surfaces of the left and right two guide rods (12, 5);

A radial hole (45) is provided on each of the moving sleeves (13, 4); the driving positioning mechanism of each moving sleeve is a manual push-pull mechanism, and it has at least one positioning device for positioning the upper crossbar ( 46).

5. The windshield shading device for an automobile according to claim 4, characterized in that the positioning device (46) comprises:

A housing (50) fixed to the moving sleeve (13), which has an inner hole (51 and a notch (52));

An L-shaped locking lever (47) provided in the housing (50), one arm of which is inserted The radial hole (31), and the other arm of the radial hole (52);

A spring (48), which is installed in the housing (50) and biases the lock lever (47), when the radial hole (3) and the recess (44) on the guide rod (12) When aligned, the lock lever (47) is inserted into the recess (44) under the bias of the spring (48), thereby locking the position of the upper crossbar (12).

The windshield light-shielding device for an automobile according to claim 1 or 2, wherein the guide rod (12, 5) is rotatably supported by the upper support base (14, 3) and the base. (11, 7), the moving sleeve (13, 4) is a nut with a threaded hole;

The motor or manual human power is used to synchronously drive the screw (12, 5) through the gear transmission mechanism (43) to rotate the nut (13> 4) relative to the screw (12, 5), that is, the nut is in the axial direction of the screw Movement, thereby driving the upper crossbar to move, pulling the shade;

The gear shifting mechanism (43) has at least one worm-worm gear motion pair, wherein the lifting angle of the worm is designed to be smaller than the friction angle.