Self-locking motor and car window structure

Abstract

The utility model belongs to the technical field of automobile lifting windows, and discloses a self-locking motor and an automobile window structure. Wherein the driving motor drives a worm to rotate, a damping bearing sleeves the worm, the front end of the worm is meshed with a gear, the gear drives a car window to ascend and descend, the gear is installed in a box body, a brush frame is installed on the side face of the box body, the worm penetrates through the brush frame, an outer ring of the damping bearing is fixed in the brush frame, and an inner ring of the damping bearing is installed on the worm. The inner ring rotates on the inner side of the outer ring, and a damping piece is formed between the inner ring and the outer ring. The problems that in the prior art, a self-locking structure can cause energy efficiency loss and has durability defects are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a car lift -and -lower window technical field especially, it relates to a self -locking motor and car window structure. BACKGROUND

[0002] The safe self -locking performance of the automobile electric window system is the core technical index of the passenger safety and the anti -theft function. In the traditional design, to prevent the car window glass from the unexpected slide under the action of the external pressure, the double scheme of the motor self -locking and the mechanical locking mechanism is generally used. Among them, the realization of the motor self -locking performance mainly depends on the special design to the driving motor and the transmission system, and the prior art scheme has significant technical limitations.

[0003] The current industry mainstream adopts the self -locking implementation scheme including:

[0004] (1) the helical angle of the worm and the gear meshing pair is reduced to the critical self -locking angle below, and the self -locking characteristics of the worm wheel and worm drive are used to realize the position keeping. But this design leads to low transmission efficiency, significantly increases the motor load and energy consumption, and needs to control the helical angle machining tolerance precisely, and the process difficulty is high;

[0005] (2) the friction self -locking effect is improved by controlling the surface roughness of the worm. In actual production, the turning or cyclone milling process is used to maintain the roughness stability by frequently changing the tool, which directly leads to the increase of manufacturing cost, and the metal debris generated by the surface micro - convex body wear can accelerate the failure of the transmission system;

[0006] (3) high static friction coefficient special lubricating grease is used, and the oil exists low temperature viscosity mutation (the viscosity increases 2-3 orders of magnitude at-20 DEG C) and aging recession problem (the friction coefficient attenuation reaches 40% after 2 years of service), which is difficult to meet the 10 years life cycle requirement of the vehicle mounted system;

[0007] The mechanical structure optimization leads to energy loss, and the material modification scheme has the durability defect. Especially when the environmental temperature changes, the mechanical wear accumulates and the lubrication state changes, the performance of the existing self -locking system will appear attenuation, and there is serious safety hazard. INVENTION CONTENTS

[0008] The utility model aims at providing a self -locking motor and car window structure, solves the problems that the self -locking structure under the prior art can lead to energy loss and has the durability defect.

[0009] To achieve the purpose, the utility model discloses the following technical scheme: the utility model provides a self-locking motor, including drive motor, drive motor drives worm rotation, the worm is sleeved with damping bearing, the worm front end is engaged with gear, the gear drives car window to lift, the gear is installed in the box, the side surface of the box is installed with the brush holder, the worm is arranged in the brush holder, the outer ring of damping bearing is fixed in the brush holder, the inner ring of damping bearing is installed on the worm, the inner ring rotates in the outer ring inboard, installs the damping member between the inner ring and the outer ring, the damping member is annular, the inboard of damping member and the inner ring abut, the damping member outboard and the outer ring abut.

[0010] As preferably, the inner ring and the outer ring are clamped with the ball, the outer wall of the inner ring is provided with the fixed groove, the damping member is inserted in the fixed groove, the damping member is annular, the outer side edge of the damping member and the inner wall of the outer ring abut.

[0011] As preferably, the material of the damping member is rubber.

[0012] As preferably, the gear and the worm are smeared with the lubricating grease.

[0013] As preferably, the inner ring and the outer ring have temperature compensation function, the inner ring and the outer ring can adjust the pre-tightening force according to temperature change.

[0014] As preferably, the damping bearing can be detachably installed on the worm.

[0015] A car window structure, including above-mentioned self-locking motor, the self-locking motor installs the car door inside, the self-locking motor is connected through the transmission member with the glass downside in the car door.

[0016] Beneficial effect: when the external force is loaded on the car window glass, the external force is transmitted to the worm through the gear, then the worm will have the tendency of rotation, the inner ring of the worm is sleeved with the damping member, the damping member generates friction force with the inner ring and the outer ring on both sides simultaneously, the above-mentioned friction force can inhibit the tendency of worm rotation, and then the worm and the gear can be avoided to rotate, the external force or the gravity of glass itself cannot drive the car glass to move, finally realizes the self-locking of car glass. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the explosion map of the self-locking motor of the utility model.

[0018] In the drawing: 1, worm; 2, damping bearing; 3, gear; 4, cover body; 5, box; 6, brush holder; 7, stator shell. DETAILED DESCRIPTION

[0019] The utility model will be further explained in detail below in combination with the drawings and examples. It can be understood that the specific examples described herein are only used to explain the utility model and are not limited to the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all the structures.

[0020] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0021] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0022] In the description of the embodiment, the terms "up", "down", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0023] Under the prior art, in order to realize the self-locking function of the vehicle window, the helix angle of the worm and gear meshing pair on the self-locking mechanism is below the critical self-locking angle, which will result in low transmission efficiency and increase the energy consumption of the motor. If the friction between the gear and the worm is increased, the machining difficulty will be increased, which will also lead to the increase of the cost, and the service life of the special lubricating grease is short, which cannot meet the service life of the vehicle.

[0024] In order to solve the above problems, such as Figure 1As shown, the utility model provides a kind of self-locking motor, including drive motor, drive motor drives worm 1 rotation, worm 1 is sleeved with damping bearing 2, worm 1 front end is engaged with gear 3, gear 3 drives car window to lift, gear 3 is installed in box 5, the side surface of box 5 is equipped with brush holder 6, worm 1 is arranged in brush holder 6, the outer ring of damping bearing 2 is fixed in brush holder 6, the inner ring of damping bearing 2 is installed on worm 1, inner ring rotates in the inside of outer ring, damping piece is installed between inner ring and outer ring, damping piece is annular, damping piece inside and inner ring abut, damping piece outside and outer ring abut.Due to the friction that damping piece and inner ring and outer ring contact, finally can make inner ring relative to outer ring rotating process by above-mentioned friction force generates resistance, make worm rotation before generating certain resistance.External force acts on glass, after transmission by gear 3 and worm 1, the torque value generated is less than above-mentioned resistance, worm will not rotate randomly, and then can maintain the stability of glass.

[0025] Box 5 upper side is equipped with cover 4, gear 3 is rotatably installed in box 5, one side of box 5 is provided with brush holder 6, worm 1 is inserted in brush holder 6, one end of worm 1 extends into box 5, worm 1 is engaged with gear 3 in the inside of box 5, the other end of worm 1 is inserted in stator shell 7, corresponding structure of motor is installed in stator shell 7, rotor in stator shell 7 drives worm 1 to rotate, so that worm 1 can drive gear 3 to rotate, gear 3 can drive transmission member to move glass, the utility model adds damping bearing 2 on worm 1, so that certain resistance is generated during the rotation of worm 1, and external force acts on glass, after transmission by gear 3 and worm 1, the torque value generated is less than the torque generated by damping bearing 2, so that external force cannot drive worm 1 to rotate, realize the self-locking of automobile glass, avoid glass to shake up and down under the action of external force, the utility model only needs to increase damping bearing 2 on original structure, and the improvement cost is lower, and worm 1 and gear 3 with lower transmission efficiency also do not need to be used for cooperation, and ordinary lubricating grease can meet the design requirement.

[0026] The utility model discloses a plurality of damping bearings 2 are detachably installed on worm 1, or different specifications of damping bearings 2 can be replaced according to requirement, to provide different damping bearings 2 for worm 1.

[0027] The utility model discloses a damping bearing 2 is arranged between the inner ring and the outer ring of the worm 1, and the damping bearing 2 is connected with the worm 1, and the damping bearing 2 is connected with the worm 1.

[0028] Meanwhile the damping bearing 2 of this patent can also be magnetic damping bearing 2, and the magnetic damping bearing 2 includes permanent magnet array and conducting ring, the permanent magnet array is fixed to the inner side of the outer ring, and the conducting ring is assembled to the outer side of the inner ring, and the permanent magnet array and the conducting ring form electromagnetic gap between each other.

[0029] Need to specially explain is, the damping bearing 2 of the utility model can be various forms, and is not limited to magnetic damping bearing 2 and eddy current damping bearing 2.

[0030] In order to reduce the friction of the internal structure of self-locking motor, lubricating grease is applied between the gear 3 and the worm 1, and bearings are installed at the front and rear ends of the worm 1, which can reduce the friction received by the worm 1 and facilitate the calibration of the resistance generated by the damping bearing 2.

[0031] The inner ring and the outer ring of the damping bearing 2 have a temperature compensation function, and the inner ring and the outer ring can adjust the pre-tightening force according to temperature changes.

[0032] The vehicle is installed with doors around, and the vehicle door is installed with a window structure, the window structure includes a self-locking motor, the self-locking motor is installed in the door, and the self-locking motor is connected with the lower side of the glass in the door through a transmission member.

[0033] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the present application. Here, it is not necessary and also impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application claim.

Claims

1. A self-locking motor, characterized in that, The system includes a drive motor that drives a worm gear (1) to rotate. A damping bearing (2) is fitted onto the worm gear (1). The front end of the worm gear (1) meshes with a gear (3). The gear (3) drives the window to rise and fall. The gear (3) is installed inside a housing (5). A brush holder (6) is installed on the side of the housing (5). The worm gear (1) passes through the brush holder (6). The outer ring of the damping bearing (2) is fixed inside the brush holder (6). The inner ring of the damping bearing (2) is installed on the worm gear (1). The inner ring rotates inside the outer ring. A damping element is installed between the inner ring and the outer ring. The damping element is annular. The inner side of the damping element abuts against the inner ring, and the outer side of the damping element abuts against the outer ring.

2. The self-locking motor according to claim 1, characterized in that, A ball bearing is sandwiched between the inner ring and the outer ring. A fixing groove is formed on the outer wall of the inner ring, and the damping element is inserted into the fixing groove. The damping element is annular, and the outer edge of the damping element abuts against the inner wall of the outer ring.

3. The self-locking motor according to claim 2, characterized in that, The damping component is made of rubber.

4. The self-locking motor according to claim 1, characterized in that, Lubricating grease is applied between the gear (3) and the worm (1).

5. The self-locking motor according to claim 1, characterized in that, The inner and outer rings have temperature compensation functions, and the inner and outer rings can adjust the preload according to temperature changes.

6. The self-locking motor according to claim 5, characterized in that, The damping bearing (2) is detachably mounted on the worm (1).

7. A vehicle window structure, characterized in that, The device includes the self-locking motor as described in any one of claims 1-6, wherein the self-locking motor is installed inside the vehicle door, and the self-locking motor is connected to the lower side of the glass inside the vehicle door via a transmission component.

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