RU21042U1 - WINDOW LIFT AUTOMOBILE - Google Patents

Abstract

Automotive window regulator, installed in the inner cavity of the door, driven by a reversible DC motor with a worm gear, characterized in that in order to improve the sealing of glass in the upper groove of the door and ensure the trajectory of parallel glass transfer along a complex trajectory, the movement of the glass holder is carried out by two identical, symmetrically located levers rotated in different directions at the same speed around horizontally placed axes.

Description

DESCRIPTION OF A USEFUL MODEL

Power window

AREA OF TECHNOLOGY TO WHICH A NEGATABLE MODEL IS.

The utility model relates to the automotive industry and can be used to automate the processes of lowering and raising automobile windows

doors.

BACKGROUND

Known devices for lowering and raising automobile windows, which are built into the interior of the door and are driven by connecting the voltage of the vehicle electrical system of one or another polarity to a reversible electric drive with a worm gear.

Known cable window devices:

companies "KIA-MOTORS (Fig. 1)

- according to the application No. 2000132079/20 (034173) dated 12/21/2000 (Fig. 2), rack and pinion window-lifting devices:

- according to the application No. 2001101348/20 (001440) dated 01/10/2001 (Fig. 3).

Such systems with linear guides (pos. 20) allow synthesizing convex trajectories parallel to the plane of inclination of the guide. Such properties of these devices require careful positioning of the guides (pos. 20) with respect to the door when installing the mechanism.

Usually automatic trailer shutdown el. the drive with a worm gear (pos. 9) is carried out according to the current, when its value exceeds a predetermined value, while the force to send to the glass at its highest position is limited by the operating characteristics of the direct current motor of the electric drive (pos. 10).

Requirements for high accuracy of installation of guides in the door, limited efforts at the moment of sending the glass to the upper position should be considered disadvantages of analogues.

ESSENCE OF A USEFUL MODEL g

The purpose of creating a utility model: improving convenience during installation and operation.

This is achieved by the fact that one of the working principles of the rocker mechanism is used in the mechanism: during operation, the shoulder of the application of force changes, which with a constant torque leads to a change in the lifting force modulo.

In FIG. 4 depicts geometric relationships arising from the interaction of two identical gears engaged.

Because the number of teeth on the wheels is equal to (), their modules are equal (), the sizes of the wheels are equal (, we mean their dividing diameters). equal to the lengths of their circles, it is obvious:

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L1 M f at all points of the wheels rotate with the same angular velocity, i.e. at the same angle for any length of time; the ends of the levers coupled to the wheels (symmetric radius vectors) always lie on a line parallel to the segment connecting the axis of rotation to its axis (01; 02); when the levers deviate (radius vectors R1; R2) from the horizontal position (), the shoulder of the vertical force decreases - LR Cos f, the magnitude of the vertical force grows: M.M Const - torque (N m), R - length of the lever (radius vectors R1; R2) (M). | / - the value of the angle of deviation from the horizontal, Cos f - tabular values of the cosine of the angle f. for cases when the material rod ab has freedom of movement along the line connecting the ends of the levers (R1 and R2), various trajectories of parallel transfer of the rod in the plane of rotation of the wheels become possible. it should be borne in mind that many trajectories will be further increased. if you use elastic deformation of the levers (R1 and R2, levers pos. 14, Fig. 5) relative to the plane of rotation of the gears - the plane of the drawing. Such properties of a mechanism of two connected gears with symmetrical levers connected to them, driving glass holders. significantly simplify the requirements for precision installation of the mechanism with respect to the door. In FIG. Figure 5 shows a general view of the utility model and the relative position of structural elements with a conditional indication of the possible positions of the glass holder (item 16): A - the upper position of the glass B - the intermediate (middle) position of the glass C - the lower position of the glass The base part is the base (item 1) which is connected to the inner wall of the door by the upper holder, the lower holder on the bracket (pos. 2, 4 and 3, respectively) by means of a threaded fastening with nuts and spring washers. On the base (posL) are mounted the details of the window mechanism. On the axles. (pos. 13) two gear wheels of the same size and number of teeth are installed (pos. 11, 12). The cheek (pos. 15) is used to fix the position of the axles (pos. 13), installed between the base (pos. 1) and the cheek (pos. 15), supports (pos. 19) fix the relative position of the gears (pos. 11,12) ) hold them in one plane. Fastening the cheeks (pos. 15) to the base (pos. 1) - with spacers (pos. 5,6), screws (pos. 7). Levers (pos. 14) are rigidly attached to the wheels (pos. 11,12), the axes at the ends of which (pos. 17) with rollers (pos. 18) transmit movement in the vertical direction to the glass holder (pos. 16). to which the glass is attached. To ensure a parallel transfer path, the wheels are connected to the levers during assembly in such a way that the conditions described in FIG. 1: - the distance from the axles of the wheels to the axles of the levers were equal, the levers are arranged symmetrically. The movement of the wheels is provided by the gear of the worm gear (pos. 8.9). gearing with one of the gears. Worm gear (pos. 9) F L R cos f; Where

driven by a reversible DC motor (key 10). to keep the glass in position, use the self-locking property of the worm gear

To illustrate the nature of the change in the magnitude of the force applied to the glass when lifting, in FIG. 6 shows a graph of the dependence of the lifting force on the angle of rotation of the mechanism lever (key 14, length 205 mm, FIG. 5). Rated torque at the output of the gear motor type DPR-20-67-02 C (P, L) .84 N m. The gear ratio from the gear wheel of the gearbox (pos. 8.9, Fig. 5) to the gear wheel (pos. 11, Fig. 5) To the torque on the gear

M to ME; M to 2.84 N m 25 N m. Ki

With the horizontal position of the levers (pos. 14, Fig 5). when (vertical force F min Mk, where N m is the torque on the gear wheel,

LP 205 m m 0.205 m - the distance between the wheel axis (pos. 13, Fig. 5) and the axis of the lever (pos. 17, Fig. 5), F 25 They are 122 N 12.2 kg s.

When the lever is raised, the angle of inclination f increases, the horizontal distance between the axis of rotation and the axis at the end of the lever arm of the moment of vertical force L Lp Cos f decreases, the lifting force module F increases: RF Mk Mk, L Lp Sozf

For calculation, the angle φ is changed after 15 degrees, from 0 to 75 degrees on both sides of the horizontal. The calculation results are summarized in the table:

LP

0.205 m

It can be seen from the graph that in the upper position, the magnitude of the lifting force has a value that reliably ensures full glass blowing into the upper groove of the door seal, reliable seal is provided here, all gaps are selected.

The dimensions of the levers and grooves in the window regulator glass holder are selected so that the angle of rotation of the lever from its horizontal position is changed to a value that limits the excessive wedging forces in the upper and lower exact trajectories and levers, this ensures the stability of the mechanism and its long service life.

All friction surfaces during assembly are lubricated with grease. which makes the operation of the mechanism silent and smooth.

LIST OF DRAWINGS FIGURES

FIG. 1. General view of the window-lifting mechanism of KIA Motors with a gear motor, cable-operated glass holder, linear guide.

FIG. 2. General view of the window-lifting mechanism according to the application No. 2000132079/20 (034173) dated 12/21/2000 with a gear motor, a cable holder for the glass holder, and a linear guide.

Fig. 3. General view of the window-lifting mechanism according to the application No. 2001101348/20 (001440) dated 01/10/2001 with a gear motor, linear rack guide.

FIG. 4. Geometric relationships arising from the interaction of a pair of identical gears with a symmetrical arrangement of two identical levers associated with them, mathematical confirmation of the possibility of synthesizing a mechanism that provides complex paths of parallel transfer. for example, a glass holder with a glass attached to a car door window.

FIG. 5 . General view of the device of a useful model of a lever window with a complex trajectory of glass transfer.

FIG. 6. The graph of the dependence of the lifting force of the lever window from the angle of rotation.

INFORMATION CONFIRMING THE POSSIBILITY OF IMPLEMENTING A USEFUL MODEL.

A useful model of a car window lifter with a lever drive was developed, manufactured and tested by the authors in the volume of an industrial batch in April 2001.

All structural materials used for the manufacture are widely known and available.

All metal parts are made by known processing methods including cutting, stamping, plastic deformation, casting, heat treatment ...

All plastic parts are cast.

For the lubrication, in the manufacture, greases of the type Litol, Shrus-4, etc. were used.

The methods used for production and control based on the results of reliability tests have shown the reliability of the design of the utility model for various operating conditions.

Claims (1)

The car window mounted in the inner cavity of the door, driven by a reversible DC motor with a worm gear, characterized in that in order to improve the glass seal in the upper groove of the door and ensure the path of parallel glass transfer along a complex path, the glass holder is moved by two identical, symmetrically located levers rotated in different directions with the same speed around horizontally placed axes.