JP4563119B2 - Motor driven gear unit for gear unit and cable window lifting system - Google Patents

Description

  The present invention relates to a gear unit and a motor drive gear unit for a cable window raising / lowering system of a motor vehicle.

  Many constraints on motor driven gear units for cable window lifting systems in motor vehicles imply that the parameter range is practically relatively narrow in terms of structural design. In particular, the following constraints must be taken into account when designing the structure. That is, the output power of the electric motor used for electric drive, the on-board power available for the motor vehicle (which affects the maximum output power), and the frictional force resulting from the structural design of the window lifting system (required minimum output power) Structural design for both the front door window lifting system and the rear door window lifting system of the motor vehicle, the maximum travel required to adjust the window, within the service life of the motor vehicle, The expected maximum number of operating times of the window lifting system, additional designs for both manual and electric drive of the window lifting system, and the bending strength and durability of the cables used. In practice, many other constraints must also be considered.

  In practice, because of these requirements, window lift system drives always have a worm wheel reduction gear ratio in the range of about 1:62 to about 1:84, while the cable drum diameter is It always ranges from about 36 mm to about 48 mm, and the output power of the electric motor is always about 20 W. Deviation from these relatively narrow parameter ranges is very difficult in practice. This is because, as described above, if any change is made, many conditions must be optimized.

  Some of the above parameters, as well as other parameters, are rarely changed in practice. This is because serious technical problems occur. For example, reducing the diameter of the cable drum has the disadvantage that the cable winds relatively high on the drum, which is a major problem in guiding the cable and the structural design of the cable window lifting system. . A further disadvantage is that the cable bends more significantly, which has an adverse effect on the durability of the cable (the duration to the service life of the motor vehicle must be guaranteed).

  In today's automobile industry, there is an increasing demand for standardization of accessories used universally. This reduces costs in terms of configuration, storage, and assembly. In particular, for this reason, electric cable window lifting systems used for both front and rear doors are now offered as units having an electric motor with an output power of 20 W. However, it has the disadvantage that too much structural volume is unnecessarily provided at the rear door. This is because the rear window usually also has a dual guidance in the door and the driving force is usually introduced at one point, so the problem of friction or tilt is less important It is. Therefore, for reasons of space and cost, it is desirable to provide an electric motor with low output power in the electric cable window lifting system. However, the relatively high requirements for front window adjustment (especially the relatively complex window guides with poor mechanical efficiency etc.) hinder this.

  Thus, given the current cost pressure in the automotive accessory industry, even a very small improvement in the gear unit or motor drive gear unit for the cable window lifting system has great economic significance. You have to pay attention.

  FIG. 8 shows a cross-sectional view of a conventional gear unit for an electric cable window lifting system. Of the gear unit, only the gear housing portion 6 in which the worm wheel 10 of the worm gear is accommodated is shown. A drive shaft (not shown) extends through a cylindrical hole at the right end of the gear housing portion 6. A drive worm 15 is installed at the front end of the drive shaft, and the teeth of the drive worm 15 are engaged with the teeth 11 of the worm wheel 10. For the reasons described above, the gear ratio of the worm gear designed in this way in the prior art ranges from about 1:62 to about 1:84.

  A driven pawl 40 is installed at the upper end of the gear housing part 6. The driven pawl 40 has a conical cut-out tooth 41 at its upper end. A cable drum (not shown) having inner teeth is placed thereon, so that it is fixed during rotation. The worm wheel 10 is designed as a hollow body having therein support ribs (not shown) arranged at an angle to each other. Correspondingly, the rubber braking members 39 arranged at an angle to each other engage with the support ribs, thereby connecting the pawl 40 to the worm wheel 10 so as to be fixed at the time of rotation. The driven pawl 40 and the worm wheel 10 are mounted so that they can rotate together around a pivot pin 9. The driven pawl 40 and the worm wheel 10 are fixed by a fixing ring 35 so as not to be displaced in the axial direction. A cable drum (not shown) serves to wind or route the cable of the cable window lifting system in a known manner.

  An upper housing cover 32 is installed in the gear housing portion 6. The sealing 30 having the sealing lip 31 is installed in an annular gap between the inner peripheral wall of the upper housing cover 32 and the outer peripheral end at the upper end of the worm wheel 10, so that the worm wheel 10 and the driven pawl 40 are connected to the gear housing. It seals with respect to the part 6. FIG.

  Due to the relatively high output power (20 W) of the electric motor in the prior art and the corresponding high driving torque, some braking is absolutely necessary in the illustrated conventional motor drive gear unit. Multi-point design of the driven train that constitutes the driven pawl, a variable rubber braking member connected to the pawl (formally engaged with the corresponding support rib on the inner periphery of the worm wheel) ), And worm wheels are relatively complex and expensive.

Patent Document 1 (Patent Document 2) discloses a cable differential type window raising / lowering drive system having a small number of parts and less severe error requirements. The motor shaft is integrated into one of the bearing covers of the gear drive unit. Sealing is provided on the peripheral end of the cable drum and / or on the gear member of the gear drive unit.
German Patent Invention No. 19812875 International Publication No. 99/47779 Pamphlet

  An object of the present invention is to provide a gear unit or motor-driven gear unit that can be used universally in both rear and front cable window elevating systems for vehicles and can be manufactured more cost-effectively with a simpler design. Is to provide.

  According to the present invention, a gear unit for a cable window lifting system of a motor vehicle, which is rotatably mounted to wind up or feed out a cable of a cable window lifting system in cooperation with the drive and the drive. A gear unit is provided comprising a gear mechanism coupled to a cable drum. The gear unit in the present invention has a cable drum diameter in the range of about 22 mm to about 30 mm, more preferably in the range of about 24 mm to about 28 mm, and the gear ratio of the gear mechanism is in the range of about 1:38 to about 1:55. More preferably in the range of about 1:42 to about 1:51.

  With the surprisingly simple method of the present invention that the diameter of the cable drum is significantly smaller than the conventional gear unit and the gear ratio of the gear mechanism is changed corresponding to the diameter of the cable drum, the rear cable window lifting system is more It is possible with the present invention to use a small and less powerful drive motor. In particular, according to the present invention, it is possible to use a drive motor having a maximum output power of about 10 W and a maximum drive torque of only about 6.0 Nm. It has been found that this design change is important for the gear unit of the present invention to be used in both electric and manual cable window lifting systems.

  Conventionally, there is a concept that such a small cable drum diameter causes the cable stress to rise beyond an acceptable level, leading to cable breakage before the normal operating life of the motor vehicle. However, due to extensive research by the applicant, the maximum cable stress in the case of the greatly reduced motor used in the present invention is sufficiently low that the cable can withstand the normal operating life of the motor vehicle. all right.

  In particular, it has been found that the use frequency of the rear window of the motor vehicle is not so high, and the maximum movement width of the rear window is often smaller than that of the front window. Therefore, unlike the above-mentioned conventional common sense, a smaller cable drum diameter can actually be used for the rear cable drum window lifting system, and the axial length of the cable drum is small despite the small diameter. It is sufficient and the cable does not wind up high on the drum.

  At the same time, the gear unit of the present invention can also be used in a front cable window lifting system. This is because, despite the fact that the cable drum diameter of the present invention has been greatly reduced, a sufficient lever arm can be used, even with a front cable window lifting system, a lower power electric motor This is because it is possible to adjust the window with a sufficient driving torque even in this case. In this way, the durability of the cable can be sufficiently ensured for the front cable window lifting system.

  According to the present invention, the gear ratio of the gear mechanism, particularly the gear ratio of the worm gear, is also reduced at the same ratio as the cable drum diameter compared to the prior art. Accordingly, the cable force / cable speed characteristic curve of the cable window lifting system of the present invention has the advantage of substantially corresponding to that of the conventional cable window lifting system.

  Due to the significantly lower output torque of the electric motor and the reduction in output power realized by the present invention, it is possible to couple the cable drum (again preferably directly) to the gear mechanism, in particular the worm wheel of the gear mechanism. Made possible by. Thus, in the present invention, the use of an additional braking member for braking between the driving shaft and the driven shaft as required in the prior art can be omitted. Thus, the present invention also has the added advantage that the complexity of the gear unit design is reduced by surprisingly simple changes, which can result in significant cost savings in both design and assembly. It becomes possible.

  In the present invention, the cable drum is provided with at least two fitting members that are provided on the end side thereof and are fitted to fit at least two corresponding parts on the end side of the worm wheel so as to fit in shape. Is bound to. The corresponding portion is designed to correspond to the fitting member. The fitting member is preferably designed as a convex part, for example a claw, which engages a correspondingly designed concave part.

  According to the present invention, the driven claw coupled to the worm wheel is not required, so that the gear housing part of the gear unit of the present invention can also be sealed in a simpler manner. For this purpose, sealing means are preferably installed on the outer peripheral end of the worm wheel or on the upper end of the gear housing part so as to be fixed during rotation.

  This feature makes it possible to significantly change the manufacturing and assembly process compared to the prior art. For example, the sealing means may be manufactured in one operation simultaneously with other sealing means for sealing the electric motor to the housing or the like (for example, sealing the electronic component housing part). For this purpose, in particular a two-component injection molding method (2C injection molding) may be used. That is, after the first component (such as a relatively hard housing) is cured, the cavity in the mold is widened, and the second component (such as a relatively soft sealing means) is injected using the second injection device. . Furthermore, the worm wheel may be pushed into the gear housing part through already applied sealing means. In contrast, in the prior art (see FIG. 8), the sealing means could only be placed on the worm wheel with the upper housing cover later. Thereby, a plurality of operations can be omitted.

  The cable drum according to the present invention is directly coupled to the worm wheel and in particular conformally engages the end side of the worm wheel, so that in the present invention the window lifting system can be manually or electrically operated without the need for further design changes. Can be arbitrarily designed as a drive. In particular, for both manual and electric cable window lifting systems, the same cable drum, the same base plate (to fix the gear unit or the electric drive gear unit to eg the guide rail of the cable window lifting system) and the same cover plate Can be used.

  In order to receive a brake spring or lap spring for a manual cable window lifting system, one mating member (especially one pawl) has a shoulder for constituting a seat for receiving the brake spring or lap spring. May be.

  In a further aspect of the invention, a motor driven gear unit for a motor vehicle cable window lifting system is further provided. In the present invention, the motor drive gear unit is characterized in that an electric motor having a maximum drive torque of about 5.7 Nm and / or a maximum output power of about 10 W is coupled to the gear unit.

  According to the present invention, such a motor-driven gear unit can be used for both a front door cable window lifting system for a motor vehicle and a cable window lifting system for a rear door of a motor vehicle.

  Since the electric motor in the present invention can have a significantly smaller maximum torque, the outer dimensions of the motor drive gear unit according to the present invention can be significantly reduced. According to the present invention, the structural volume to be included in a vehicle door or a door module integrated into the door can be reduced by about 40% or 50%. Overall, this allows for a significant cost reduction compared to the prior art.

  Embodiments of the present invention will be described with reference to the accompanying drawings. Further features, advantages, and objectives achieved can be read from the drawings. In the drawings, members or groups of members that are identical or perform substantially the same function are denoted by the same reference numerals.

  FIG. 1 is a cross-sectional view showing a gear unit of the present invention. As shown in FIG. 1, the worm wheel 10 is accommodated in a gear housing portion 6 formed by a housing bottom portion 7 and a side wall 8 extending perpendicularly from the housing bottom portion 7. A rotating pin 9 projects vertically from the housing bottom 7. The rotary pin 9 is designed as a metal or plastic pin and is fixedly connected to the housing bottom 7. The rotating pin 9 serves as the rotating shaft of the worm wheel 10 and the cable drum shown in FIG. The drive shaft of the electric motor extends through a cylindrical hole at the left end of the gear housing portion 6. This drive shaft has a drive worm 15 at its front end, and this drive worm 15 meshes with the worm wheel 10. The worm wheel 10 and the drive worm 15 form a worm gear. The gear ratio of the worm gear is defined by the teeth of the drive worm 15 and the teeth 11 of the worm wheel 10.

  In the present invention, the gear ratio of the worm gear is in the range of about 1:38 to about 1:55, more preferably in the range of about 1:42 to about 1:51, and even more preferably about 1:47. The gear ratio in the present invention is very different from the gear ratio of the conventional cable window lifting system which is in the range of about 1:62 to about 1:84.

  The worm wheel 10 has a peripheral end having a substantially smooth wall surface above the teeth 11, opposite the upper end 29 of the side wall 8. The upper peripheral edge of the worm wheel 10 is tightly enclosed so that friction is generated by a substantially C-shaped sealing. Thus, the ceiling 30 is installed on the worm wheel 10 so as to be substantially fixed to the worm wheel 10 during rotation. The annular gap between the upper peripheral wall of the worm wheel 10 and the upper end 29 of the side wall 8 is bridged by two hook-like sealing lips 31 protruding from the sealing 30 and abutting against the inner peripheral wall of the upper end 29 of the side wall 8. . For this reason, the worm wheel 10 is sealed with respect to the gear housing portion 6. When assembling, the worm wheel 10 may be placed on the rotating pin together with the sealing 30 and pushed into the gear housing portion 6.

  As shown in FIG. 1, a ring-shaped bead 36 is formed on the lower end side of the worm wheel 10, and the worm wheel 10 rides on the ring-shaped bead 36 in the gear housing portion 6, thereby generating frictional force. Decrease. Alternatively, a corresponding ring-shaped bead may be further formed on the lower end side of the worm wheel 10. Alternatively, a corresponding ring-shaped bead may be further formed on the upper surface of the housing bottom 7. The upper end side of the worm wheel 10 is designed to be substantially flat and has two recesses 13 and 14. As will be described later with reference to FIGS. 2 and 3, the recesses 13 and 14 serve to couple the cable drum (FIG. 2) to the worm wheel 10 so as to be fixed during rotation.

  FIG. 2 is a sectional view showing the engagement between the worm wheel and the cable drum according to the present invention. As shown in FIG. 2, the cable drum 17 has two pawls 19 and 20 on the lower end side thereof that protrude in the axial direction from the lower end side and extend in a ring shape in the circumferential direction. As shown in FIG. 2, the pawls 19 and 20 are fitted into the correspondingly designed recesses 13 and 14 on the upper end side of the worm wheel 10 so that there is substantially no play, so that the cable drum 17 is connected to the worm wheel. 10 fits conformally.

  As shown in FIG. 1, at the illustrated position of the worm wheel 10, the conical shoulder portion 37 of the rotating pin 9 protrudes from a plane formed by the upper end side of the worm wheel 10. The conical shoulder portion 37 contributes to accurate positioning of the cable drum 17 in the axial direction. As shown in FIG. 2, at the illustrated position of the cable drum 17, the pawls 19, 20 are completely fitted in the recesses 13, 14, and the portion of the through hole 21 of the cable drum 17 that extends in a conical shape is the rotation pin 9. When abutting against the conical shoulder portion 37, a relatively narrow gap is formed between the upper end side of the worm wheel 10 and the cable drum 17 in the axial direction. This narrow gap can serve to compensate for manufacturing errors.

  As shown in FIG. 2, a circumferential protrusion 23 that protrudes in the radial direction is formed on the peripheral end portion on the lower end side of the cable drum 17. The circumferential protrusion 23 completes the sealing of the worm wheel 10 with respect to the gear housing portion 6 by abutting or slightly overlapping with the inner peripheral end (FIG. 1) of the sealing 30 at the illustrated position of the cable drum 17. Let

  As shown in FIG. 2, in the present invention, the cable drum 17 is directly engaged in the cable drum 17 by pawls 19 and 20. Therefore, according to the present invention, it is not necessary to use an additional braking member such as a deformable rubber block, for example, to brake the drive torque of the electric motor. This simpler and more cost-effective design results in a significantly lower gear ratio of the worm gear in the present invention and correspondingly a smaller diameter of the cable drum 17 compared to the prior art. Therefore, it is a direct result that the maximum drive torque of the electric motor in the present invention can be selected to be significantly smaller.

  FIG. 3 is an exploded perspective view showing the worm wheel and the cable drum of FIG. As shown in FIG. 3, the two recesses 13 and 14 are provided at positions facing diagonally of the through hole 16. Each of the two recesses 13 and 14 is formed by two peripheral walls located concentrically with respect to the through hole and two side walls extending in the radial direction and connecting the peripheral walls to each other. As shown in FIG. 3, the angles of the cable drum 17 relative to the worm wheel 10 are clearly defined by the different shapes of the two recesses 13, 14 and the correspondingly designed pawls 19, 20 from each other. It is like that. As will be readily appreciated by those skilled in the art, any other lock or latch member may be used to connect the cable drum 1 to the worm wheel 10 so that it is secured during rotation.

  A cable of the cable window lifting system (FIGS. 7A and 7B) is guided along a spiral guide groove 18 provided on the outer periphery of the cable drum 17. The upper end 25 of the cable drum 17 is provided with a cable nipple receptacle 26 extending in a substantially tangential direction for receiving a cable nipple of the cable of the cable window lifting system. The cable nipple receiving portion 26 is connected to the cable bushing 27 and further connected to the bent portion 28. At the bent portion 28, the cable is bent into the uppermost guide groove 18. In order to receive the other end of the cable of the cable window lifting system, a corresponding cable nipple receiving portion is formed on the lower end side of the cable drum 17.

  As shown in FIG. 3, the pawl 20 has protrusions or protrusions 24 in the axial direction, so that when used in a manual cable window lifting system 100 as shown in FIG. A receiving part is obtained for receiving the end 58 bent inside the lap spring or brake spring (FIG. 7A).

  In the present invention, the outer diameter of the cable drum 17 is significantly smaller than that of a conventional cable drum for an electric cable window lifting system. In the present invention, the cable drum 17 has a diameter in the range of about 22 mm to about 30 mm, more preferably in the range of about 24 mm to about 28 mm, and even more preferably about 26 mm. In the present invention, the illustrated gear unit can be used in either a manual or electric cable window lifting system for both front and rear doors of a motor vehicle.

  FIG. 4 is a sectional view showing a gear unit according to the second embodiment of the present invention. As shown in FIG. 4, in the second embodiment, an annular ceiling 30 surrounds the upper end 29 of the side wall 8 of the gear housing portion 6. From the ceiling 30, an upper sealing lip 31 protrudes radially inward, and a lower sealing lip 31 protrudes radially inward substantially in a hook shape. The sealing 30 is closely installed on the upper end 29 so that a frictional force is generated, and is installed so as to be fixed at the time of rotation. At the illustrated position of the worm wheel 10, the sealing lip 31 contacts the upper peripheral end of the worm wheel 10, thereby sealing the worm wheel 10 with respect to the gear housing portion 6. During assembly, the ceiling 30 may first be placed on or formed on the upper end 29. Then, the worm wheel 10 is placed on the rotating pin 9 and is pushed into the gear housing portion 6 through the sealing 30.

  Preferably, the gear unit is manufactured by a two-component injection molding method. First, the first relatively rigid component is used to inject the housing into the mold, then the mold cavity is widened and the second relatively soft component is injected using the second injection device. . Thus, the entire sealing is injected onto the housing in a single operation (eg to seal plug-in electronics and electric motor (see FIG. 6B) and seal the worm wheel).

  FIG. 5 is a partial cross-sectional perspective view showing a motor drive gear unit for the cable window lifting system shown in FIG. As shown in FIG. 5, the gear housing portion 6 is located at the front end of the housing 2 having the motor housing portion 3 for fixing the electric motor (FIG. 6A) and receiving the drive shaft 14. A plurality of fixing regions 4 are provided on the housing 2 in order to fix the motor drive gear unit 1 to the vehicle door. Plug-in electronic components that control the carbon brush and the electric motor are pushed into the housing 2 from the side through the insertion port 5 so that the carbon brush contacts the commutator on the drive shaft 14. A drive worm (not shown) that meshes with the worm wheel 10 is installed at the front end of the drive shaft 14.

  Since the diameter of the cable drum is significantly smaller than that of the prior art and the gear ratio of the worm gear is correspondingly reduced, the present invention uses an electric motor with a considerably low maximum driving torque and low output power. It is possible. Thus, the motor drive gear unit 1 as a whole is characterized in that the structure volume is significantly small. Therefore, in the present invention, the motor drive gear unit of the cable window raising / lowering system is received or received by the vehicle door. The structural volume to be included in the door module is significantly reduced.

  6A and 6B are perspective views showing two stages in the assembly of the electric cable window lifting system according to the present invention. The cable 53 included in the cable window raising / lowering system 100 is guided in a circulating or rotating manner, and is bent by the bending roller 56 in the bending region 55. The end portion of the cable 53 is received by the upper cable nipple receiving portion 26 and the lower cable nipple receiving portion 26 of the cable drum 17. The base plate 52 serves to fix the motor drive gear unit 1 to the guide rail 54 and / or the door module and / or the door. 6A, the cable drum 17 is first placed on the rotating pin of the base plate 52, and the two cable nipples of the cable 53 are fixed to the cable nipple seat. Next, as shown in FIG. 6B, with the electric motor 50 fixed to the housing 2, the motor drive gear unit 1 is placed on the base plate 52, and the pawls 19 and 20 of the cable drum 17 are corresponding recesses of the worm wheel. To engage. Then, the motor drive gear unit is connected to the base plate 52.

  7A and 7B are perspective views showing two stages in the assembly of the manual cable window lifting system according to the present invention. In the present invention, the cable window raising / lowering system 100 is configured identically as a preliminary stage. In the present invention, the same base plate 52 as the base plate of the electric cable window lifting system shown in FIGS. 6A and 6B can be used. As shown in FIG. 7A, the cable drum 17 is placed on the rotating pin of the base plate 52, and the cable nipple of the cable 53 is fixed to the corresponding cable nipple receiving portion of the cable drum 17. As can be seen from FIG. 7A, the pawl 20 of the cable drum 17 has a protrusion 24 so that a seat for receiving the end 58 bent inside the lap spring or brake spring 57 shown in FIG. can get. As shown in FIG. 7B, a cylindrical housing or brake cup 61 with a plate 62 is provided on the cable drum 17, into which a crank bolt 59 of a manual cable window lifting system is engaged. The crank bolt 59 has teeth 60 at the front end. The lap spring or brake spring 57 is fixed by a known method.

In summary, the present invention provides the following advantages in particular.
(1) The gear unit can be arbitrarily used as a manual or electric drive for the cable window lifting system.
(2) The motor drive gear unit can be arbitrarily used in the front or rear window of the motor vehicle.
(3) The cable drum, the base plate, and the gear housing portion may have the same design.
(4) An electric motor having a significantly lower maximum driving torque can be used.
(5) A braking member in the gear housing (for example, between the worm wheel and the cable drum) can be omitted. Also, it is not necessary to have a conical cut-out tooth on the cable drum for connecting it to the worm wheel or the part carrying the braking member.
(6) The structure volume of the motor drive gear unit according to the present invention is significantly reduced.
(7) By using two-component injection molding, all sealing on the gear housing can be formed in one operation.
(8) An additional cover plate for covering the worm wheel housed in the gear housing portion can be omitted.
Various changes and modifications can be made without departing from the concepts and scope defined in the appended claims, as will be readily appreciated by those of skill in the art upon review of this specification. . Such variations and modifications are therefore intended to be explicitly included in the present invention.

Sectional drawing which shows the gear unit of this invention Sectional drawing which shows engagement with the worm wheel and cable drum by this invention FIG. 2 is an exploded perspective view showing the worm wheel and the cable drum of FIG. Sectional drawing which shows the gear unit by the 2nd Embodiment of this invention. Partial cross-sectional perspective view of the motor drive gear unit shown in FIG. The perspective view which shows the two steps in an assembly of the electric cable window raising / lowering system by this invention The perspective view which shows the two steps in an assembly of the electric cable window raising / lowering system by this invention The perspective view which shows the two steps in an assembly of the manual cable window raising / lowering system by this invention. The perspective view which shows the two steps in an assembly of the manual cable window raising / lowering system by this invention. Sectional drawing of the conventional gear unit for electric cable window raising / lowering systems.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Motor drive gear unit 2 Housing 3 Motor housing part 4 Fixed area | region 5 Insertion port 6 Gear housing part 7 Housing bottom part 8 Side wall 9 Rotation pin 10 Worm wheel 11 Teeth 12, 13 Concave 14 Drive shaft 15 Drive worm 16 Through-hole 17 Cable drum 18 Guide groove 19, 20 Claw 21 Through hole 22 Seat portion 23 Circumferential protrusion 24 Protrusion 25 Upper end side 26 Cable nipple receiving portion 27 Cable bushing 28 Bending area 29 Upper end 30 Sealing 31 Sealing lip 32 Upper housing cover 35 Fixing ring 36 Surrounding bead 37 shoulder 39 rubber braking member 40 drive claw 41 conical cut-out tooth 50 electric motor 51 plug-in electronic component 52 base plate 53 cable 54 guide rail 55 bending region 56 bending roller 57 lap spring End 59 bent to 8 inside the crank bolt 60 teeth 61 housing / brake cup 62 plate 100 cable window lifter system

Claims (16)

A gear unit for a motor vehicle cable window lifting system,
Drive,
A gear mechanism,
The gear mechanism is coupled to a rotatably mounted cable drum for winding or delivering the cable of the cable window lifting system in cooperation with the drive ;
Wherein the diameter of the cable drum is 2 2 mm or et 3 0 mm of range,
Gear ratio of the gear mechanism is 1:38 or al 1: Ri Ah 55 range of,
The cable drum has at least two fitting members at positions different from the center position on the end surface thereof,
The gear unit is a gear unit that fits in such a manner that the shape fits at least two corresponding portions formed at positions different from the center position on the opposite end face of the worm wheel of the gear mechanism . The gear unit according to claim 1, wherein the fitting member is provided at a position diagonally opposed to the axial through hole in the center of the cable drum . The fitting member is designed as a protrusion on the end surface of the cable drum,
The corresponding part is designed as a recess on the opposite end face of the worm wheel;
The recess receives without play the convex portion, the gear unit according to claim 1. Each of the recesses is formed by two peripheral walls that extend concentrically with respect to the axial through hole in the center of the worm wheel,
The gear unit according to claim 3, wherein the peripheral wall is connected by two side walls. The angular direction of the cable drum with respect to the worm wheel is defined when the concave portion and the convex portion are fitted with each other because the shape of the two concave portions and the shape of the convex portion corresponding to the two concave portions are different. Item 5. The gear unit according to Item 4. When the cable drum is fitted with the worm wheel of the gear mechanism, to compensate for manufacturing errors between the end surface of the cable drum having the convex portion and the opposite end surface of the worm wheel having the concave portion. The gear unit according to claim 3, wherein the narrow gap is formed in an axial direction. One of the convex portion, the gear unit so as to be used for manual or motorized drive, having a shoulder portion for receiving the brake spring or wrap spring manual cable window lifter system, according to claim 3 Gear unit. The worm wheel of the gear mechanism is housed in the housing portion of the gear unit ,
The worm wheel has a peripheral end portion having a smooth wall surface above the teeth of the worm wheel facing the upper end of the inner peripheral wall of the housing portion,
Sealing a ring-shaped gap formed between a peripheral end portion having a smooth wall surface of the worm wheel and an upper end of the inner peripheral wall of the housing portion so that the front surface of the worm wheel is exposed to the outside of the housing portion. A sealing means for sealing the worm wheel with respect to the housing part;
The gear unit according to claim 4, wherein the cable drum is disposed outside the housing portion . The sealing means is in the shape of a bowl that contacts the upper end of the inner peripheral wall of the housing part or the peripheral end part having a smooth wall surface of the worm wheel to seal the worm wheel with respect to the housing part. The gear unit according to claim 8, comprising a protruding sealing lip. Said sealing means enclose the upper end of the upper end or the worm wheel of the housing portion, tightly frictional force is generated, and is installed on the upper end so as to be secured during rotation, according to claim 8 Gear unit. The gear unit including the housing part and the sealing means is formed from the first hard plastic material, and the sealing means is formed from a second plastic material softer than the first plastic material. The gear unit according to claim 8, wherein the gear unit is formed by a two-component injection molding method. The fixing area for fixing to the motor vehicle door gear unit is provided on the housing of the gear unit, wherein the fixing region is identical for manual gear unit and the motor drive gear unit, according to claim 7 Gear unit. The gear unit according to claim 7, which can be used for electric and manual drive using the same cable drum. The gear unit according to claim 1, which can be used in a cable-operated window raising / lowering system for a front door of a motor vehicle and a cable-operated window raising / lowering system for a rear door of a motor vehicle without further modification. . A motor-driven gear unit for a cable window raising / lowering system of an automatic vehicle,
An electric motor coupled to the gear unit according to claim 1 ;
The electric motor has a motor driving gear unit having a driving torque of up to 5.7 Nm and / or a maximum output power of 10 W. 16. The motor of claim 15 , wherein the electric motor can be used for both a motor vehicle front door cable window lifting system and a motor vehicle rear door cable window lifting system without further design changes. Drive gear unit.

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