JP2020078223A - Wiper drive and method for assembling wiper drive - Google Patents

Abstract

To provide a wiper drive unit that allows a simple and uncomplicated assembly of a drive motor due to a replaceable motor module.SOLUTION: A wiper drive unit 100 for a wiper device of an automobile includes a helical gear transmission mechanism 150 and a drive motor 129. The helical gear transmission mechanism has a drive pin 153 used for mounting a wiper arm or a crank of a wiper device, a helical gear 151 for driving the drive pin, and a transmission mechanism housing 140 having a transmission mechanism cover 160. In the assigned wiper drive, the drive motor is formed as a replaceable motor module 110, which is preferably removably mounted in the transmission housing.SELECTED DRAWING: Figure 1

Description

BACKGROUND OF THE INVENTION The present invention is a wiper drive unit for an automobile wiper device, which includes a helical gear transmission mechanism and a drive motor for driving the helical gear transmission mechanism. It has a drive pin used for mounting a wiper arm or a crank of a wiper device, and a helical gear that drives the drive pin, and the helical gear transmission mechanism is assigned a transmission mechanism housing having a transmission mechanism cover. , Wiper drive.

  In the prior art, a wiper drive of this kind for a wiper device of a motor vehicle is known, which comprises a helical gear transmission and a drive motor for driving the helical gear transmission. The wiper drive unit includes a housing, and the helical gear transmission mechanism and the drive motor are arranged in the housing. The helical gear transmission mechanism has a drive pin and a helical gear that drives the drive pin. The drive pin is used to attach the wiper arm for direct drive or to attach the crank for drive via the link rod of the wiper device. Further, a transmission mechanism housing having a transmission mechanism cover is assigned to the helical gear transmission mechanism.

DISCLOSURE OF THE INVENTION The present invention is a wiper drive unit for an automobile wiper device, which includes a helical gear transmission mechanism and a drive motor for driving the helical gear transmission mechanism. , A drive pin used for mounting a wiper arm or a crank of a wiper device, and a helical gear for driving the drive pin, and the helical gear transmission mechanism is assigned a transmission mechanism housing having a transmission mechanism cover. A wiper drive unit. The drive motor is designed as a replaceable motor module, which is preferably removably mounted in the transmission housing.

  Thus, the present invention provides a wiper drive that allows a simple and uncomplicated assembly of the drive motor with replaceable motor modules. In this case, an application-specific drive motor for the wiper drive can be easily prepared, and the drive motor can be easily replaced and / or maintained in the event of a failure.

  Preferably, the replaceable motor module has a motor housing, a stator and a rotor assembly. This makes it possible to provide a motor module that can be individually inspected. That is, the motor module can be tested and / or tested alone and without a transmission mechanism.

  The rotor assembly preferably comprises a rotor shaft, a rotor set, a bearing assembly and a bearing cap. This makes it possible to provide a suitable rotor configuration group easily and without complication.

  According to one embodiment, the bearing assembly and bearing cap are configured to radially and axially support the replaceable motor module. As a result, accurate and precise support of the motor module in the transmission mechanism housing can be realized.

  Preferably, at least a part of the bearing assembly and the bearing cap is arranged in the transmission housing with the wiper drive assembled. Thereby, the wiper drive unit can be formed in a small space.

  Preferably, the rotor shaft has a coupling interface, the coupling interface being connected to interact with a helical gear of a helical gear transmission. Thereby, the replaceable motor module can be easily connected to the helical gear transmission mechanism.

  Preferably, the replaceable motor module has at least one connecting element, which is assigned a terminal block for electrical connection with an electronic unit. As a result, the drive motor can be reliably and robustly electrically connected to the electronic unit.

  According to one embodiment, the replaceable motor module comprises an electronically commutated motor. This makes it possible to provide a suitable motor module that can be replaced easily and without complexity.

Further, the present invention is a wiper drive unit for a wiper device of an automobile, comprising a helical gear transmission mechanism and a drive motor for driving the helical gear transmission mechanism, wherein the helical gear transmission mechanism is a wiper. A drive pin used for mounting a wiper arm or a crank of the device, and a helical gear for driving the drive pin, and the helical gear transmission mechanism is assigned a transmission mechanism housing having a transmission mechanism cover; A method of assembling a wiper drive is provided. The method is at least:
Prepare a motor module that forms a drive motor and can be attached to the transmission mechanism housing.
Attach the motor module to the transmission mechanism housing,
Assemble the helical gear transmission in the transmission housing,
Attach the transmission mechanism cover to the transmission mechanism housing,
Has the steps.

  Thus, the present invention can provide a method of assembling a wiper drive unit that can realize a simple and uncomplicated assembly of the wiper drive unit by the motor module that can be attached to the helical gear transmission mechanism. In this case, the motor module is preferably easily replaceable.

Preferably, the method is at least:
Fixing the stator assigned to the drive motor in the assigned motor housing,
Assemble the rotor components,
Install the rotor components in the motor housing,
Fixing the terminal block to at least one connecting element assigned to the drive motor,
It has the further step of.

  This makes it possible to achieve a time-saving assembly of the motor module without complexity.

According to one embodiment, the assembly of rotor components is:
Fixing the bearing element in the housing of the bearing cap,
Attach the bearing cap to the rotor shaft,
Attach the rotor set to the rotor shaft,
Fixing another bearing element to the rotor shaft,
Has the steps.

  This makes it possible to easily assemble the rotor component group.

Brief Description of the Drawings The invention will be explained in greater detail in the following description on the basis of the embodiments shown in the drawings.

FIG. 3 is a perspective exploded perspective view of a wiper drive unit including a motor module according to the present invention. It is a perspective exploded perspective view of the motor module of FIG. FIG. 3 is a perspective view of a stator assigned to the motor module of FIGS. 1 and 2. 3 is a perspective view of the stator of FIG. 3 housed in a motor housing assigned to the motor module of FIGS. 1 and 2. FIG. FIG. 3 is a perspective view of a rotor shaft assigned to the motor module of FIGS. 1 and 2. FIG. 3 is a perspective view of a rotor configuration group assigned to the motor module of FIGS. 1 and 2. 5 is a perspective view of a rotor configuration group arranged in the motor housing of FIG. 4. FIG. It is a perspective view of the motor module of FIG. 9 is a perspective view of the motor module of FIG. 8 disposed in the transmission mechanism housing. FIG. It is a perspective view of the wiper drive part of FIG. FIG. 11 is a vertical sectional view of the wiper drive unit of FIG. 10.

Description of Embodiments FIG. 1 shows an exemplary drive unit 100. The drive unit 100 is in the example and preferably formed as a wiper drive for a wiper device of a motor vehicle and is referred to below as the "wiper drive 100". The wiper drive unit 100 preferably includes a drive motor 129 and a transmission mechanism 150. In this case, the drive motor 129 is preferably arranged in the motor housing 113 and the transmission mechanism 150 is arranged in the transmission mechanism housing 140. The drive motor 129 arranged in the motor housing 113 is preferably a brushless or electronically commutated DC motor, ie an EC motor. The transmission mechanism 150 arranged in the transmission mechanism housing 140 is preferably a helical gear transmission mechanism used for adapting the rotation speed or increasing the torque.

  The transmission mechanism housing 140 preferably has an accommodating part 197 formed in the axial direction or the longitudinal direction 107 of the wiper driving part 100 in the specific example, and the accommodating part 197 accommodates at least a part of the drive motor 129. Preferably, the transmission mechanism housing 140 has an accommodating portion 146 formed in the radial direction or the transverse direction 106 of the wiper driving portion 100, and the accommodating portion 146 is a drive pin 153 assigned to the helical gear transmission mechanism 150. To house. A transmission mechanism cover 160 is preferably assigned to the transmission mechanism housing 140. The transmission mechanism cover 160 has a positioning groove 161 on the outer periphery of the transmission mechanism cover 160, which is preferably engageable with the peripheral edge 149 of the transmission mechanism housing 140. Further, the transmission mechanism cover 160 preferably has a contact connection portion 162 formed so as to be connected to an external current supply portion or the like. Further, the transmission mechanism cover 160 is preferably assigned an electronic unit (520; FIG. 11).

  The drive motor 129 preferably drives the helical gear transmission mechanism 150 to rotate. A helical gear 151 is assigned to the helical gear transmission mechanism 150. The helical gear 151 has an outer circumference having a predetermined coupling geometry 152 on the preferably cylindrical base of the helical gear 151, and the drive motor 129 has a helical geometry via the coupling geometry 152. The tooth gear transmission mechanism 150 is driven. The helical gear transmission mechanism 150 itself is preferably designed to drive the drive pin 153 in particular in a reciprocating swivel manner. For the drive pin 153, the wiper arm of the wiper device may be fixed in the case of direct drive, and the crank having the link rod may be fixed in the case of so-called "conventional" drive. Thereby, the drive pin 153 is preferably formed so that the wiper arm or crank of the wiper device can be attached thereto.

  Preferably, the drive motor 129 arranged in the motor housing 113 is formed as a replaceable motor module 110, which in the example has first and second axial ends 111, 112. .. Preferably, the motor housing 113 has a substantially cylindrical base 114, and the base 114 has an internal housing 118 in which at least a part of the drive motor 129 is arranged. Furthermore, the motor housing 113 preferably has a bearing housing area 117 for housing the drive motor 129 or the bearing element (226; FIG. 2) of the motor module 110 at the end on the first end 111 side.

  Preferably, the motor module 110 is removably attached to the transmission mechanism housing 140 either as a free end or at a second axial end 112. For this purpose, the motor housing 113 has at the second end 112 of the motor housing 113 at least one, in the example two, preferably diametrically opposite flange elements 115, Each of the 115 has one void 116. Preferably, the transmission mechanism housing 140 has a coupling flange 141 at an end of the transmission mechanism housing 140 on the drive motor 129 side, and the coupling flange 141 is at least one flange portion assigned to at least one flange element 115. Have 196. Like the flange element 115, the flange portion 196 has a cavity 147 assigned to the cavity 116. Preferably, the motor module 110 is coupled by a threaded connection with a screw element 119 located in each of the cavities 116, 147. However, the motor module 110 may be removably disposed in the transmission housing 140 in another suitable manner, for example via a clamp and / or locking connection.

  The replaceable motor module 110 preferably includes a motor housing 113, a stator (210; FIG. 2), and a rotor assembly 198. The rotor assembly 198 preferably includes a rotor shaft 130, a rotor set (221; FIG. 2), a bearing assembly (225; FIG. 2), and a bearing cap 120. The bearing assembly (225; FIG. 2) and the bearing cap 120 are preferably formed to support the motor module 110 radially and axially.

  According to one embodiment, the rotor shaft 130 preferably has a coupling interface 131 and a support area 132 at the end of the rotor shaft 130 on the transmission mechanism housing 140 side (229; FIG. 2). There is. The coupling interface 131 is preferably connected so as to interact with the helical gear 151 of the helical gear transmission mechanism 150. Preferably, the connection interface 131 is formed as a worm 131. The connecting interface 131 of the rotor shaft 130 is then connected in such a way as to interact with the connecting geometry 153 of the helical gear 151 of the helical gear transmission 150.

  Preferably, the coupling interface 131 is formed as a unified interface, so that the motor module 110 can be combined with various transmission mechanisms. However, the motor modules 110 may be formed differently or may be selected in different torque classes. Thus, for example, a relatively short motor module 110 can be used when the required torque is relatively low, and / or a relatively long motor module 110 can be used when the required torque is relatively high. it can. Furthermore, the motor module 110 may be incorporated into another application, such as a sunroof, or any other application that can use an EC motor with a worm wheel transmission.

  Furthermore, the drive motor 129 preferably comprises at least one, in particular three, connection elements 127, which are preferably used for electrical connection with the electronic unit (520; FIG. 11). .. Furthermore, the rotor shaft 130 is preferably assigned a sensing element 125, which cooperates with a sensor element (522; FIG. 11) assigned to the electronic unit. Preferably, the sensor element detects the rotor position of the rotor or rotor assembly 198. Preferably, the detection element 125 is formed as a permanent magnet, which is referred to below as "permanent magnet 125".

  Preferably, with the wiper drive 100 assembled, at least a portion of the bearing assembly (225; FIG. 2) and the bearing cap 120 are disposed within the transmission mechanism housing 140. The transmission mechanism housing 140 preferably has an accommodating part 197 formed in the longitudinal direction 107 of the wiper drive part 100 in the specific example, and the accommodating part 197 accommodates at least part of the drive motor 129.

  The accommodating part 197 of the transmission housing 140, which is formed in the longitudinal direction 107, preferably has at least one, in particular five, accommodating areas 142, 143, 144, 145, 148, 199. With the wiper drive 100 assembled, the support area 132 of the rotor shaft 130 is preferably arranged in the support area 145 of the transmission housing 140. The connecting interface 131 of the rotor shaft 130 is then preferably arranged in the receiving area 144. The permanent magnet 125 is preferably located within the receiving area 148. The accommodation area 148 preferably has an accommodation area 143 at the end of the accommodation area 148 on the side of the motor module 110, and the accommodation area 143 is expanded to the support area 199 and the accommodation area 142. In that case, the accommodation area 142 preferably accommodates at least a part of the bearing cap 120 when the wiper drive unit 100 is assembled. The bearing cap 120 is assigned a bearing element (227; FIG. 2), preferably at least a part of the bearing element 227 is arranged in the support zone 199. The receiving area 142, the receiving area 143 and the supporting area 199 are then preferably assigned to the coupling flange 141.

A wiper drive unit 100 for an automobile wiper device, comprising a helical gear transmission mechanism 150 and a drive motor 129 for driving the helical gear transmission mechanism 150, wherein the helical gear transmission mechanism 150 includes a wiper gear. A transmission mechanism housing having a drive pin 153 used for mounting a wiper arm or a crank of the apparatus, a helical gear 151 for driving the drive pin 153, and a helical gear transmission mechanism 150 having a transmission mechanism cover 160. A method of assembling the wiper drive 100, wherein 140 is assigned, the method comprising at least:
The drive motor 129 is formed, and the motor module 110 that can be attached to the transmission mechanism housing 140 is prepared.
Attach the motor module 110 to the transmission mechanism housing 140,
Assemble the helical gear transmission mechanism 150 in the transmission mechanism housing 140,
Attach the transmission mechanism cover 160 to the transmission mechanism housing 140,
Has the steps.

  Preferably, the assembly of the motor module 110 is carried out in the direction 101 of the wiper drive 100 or in the longitudinal direction 107. Furthermore, the assembly of the helical gear transmission mechanism 150 in the transmission mechanism housing 140 is preferably carried out in the direction of the arrow 102 or in the transverse direction 106. Further, preferably, the attachment of the transmission mechanism cover 160 to the transmission mechanism housing 140 is carried out in the direction of the arrow 103 or in the lateral direction 106. Additionally, the steps or sequences described above are merely exemplary and should not be construed as limiting the invention. Thus, preferably, the steps of assembling the motor module 110 and the transmission mechanism 150 may be performed in parallel or in tandem. Preferably, the assembly of the motor module 110 is carried out on an independent production line, so that the motor module 110 can preferably be manufactured, so to speak, in advance. Further, the assembly of the helical gear transmission mechanism 150 in the transmission mechanism housing 140 and the attachment of the motor module 110 to the transmission mechanism housing 140 may be performed in tandem or in reverse order.

The assembly of the motor module 110 is then preferably at least:
Fixing the stator (210; FIG. 2) assigned to the drive motor 129 in the assigned motor housing 113,
Assemble the rotor component group 198,
Install rotor group 198 in motor housing 113,
Fixing the terminal block 430 to at least one connecting element 127 assigned to the drive motor 129,
Has the steps.

  In addition, the above sequence of enumerating the corresponding method steps is of exemplary nature only and should not be considered as limiting the invention. Thus, for example, fixing the stator (210; FIG. 2) assigned to the drive motor 129 within the assigned motor housing 113 may be performed before, during, or during assembly of the rotor assembly 198. You may carry out after.

  FIG. 2 shows the motor module 110 of FIG. 1 and clarifies the structure of the motor module 110. The stator 210 is preferably formed as an outer stator, and in the embodiment, a stator core 213 which is provided at least in part with a plastic jacket 211, which is preferably formed as a plurality of insulators, and which is segmented. have. Stator winding 212 is preferably arranged on stator core 213. Further, at least one connecting device 214 is arranged at the end of the stator 210 on the side of the second axial end 112 of the motor module 110.

  The connection device 214 is formed to connect the plurality of individual windings assigned to the stator 210 to form the stator winding 212. Preferably, at least one connecting device 214 comprises at least one, in the example three connecting elements 127 or 215, 216, 217. The connecting elements 215 to 217 are preferably designed to be connected to an external mating connecting element. The connecting elements 215 to 217 are then preferably arranged on the connecting device 214 in the axial or longitudinal direction 107.

  Further, FIG. 2 shows a rotor 220 having a first axial end 228 on the side of the first axial end 111 of the motor module 110 and a second axial end 229 located on the opposite side. Is shown. The support area 132 of the rotor shaft 130 and the connecting interface 131 are then arranged in the region of the second axial end 229. In this case, the support area 132 is arranged at the end of the connecting interface 131 on the side of the second end 229, and the permanent magnet 125 is located on the end of the connecting interface 131 on the side of the first end 228. It is arranged.

  Preferably, the thin metal plate laminate 221 to which the permanent magnets 222 are attached is arranged on the second end portion 229 of the rotor shaft 130 so as not to be rotatable relative to each other, and forms an inner rotor together with the rotor shaft 130. ing. The substantially cylindrical rotor shaft 130 has, in the specific example, first and second end portions 228 and 229, and preferably, at least a part of the rotor shaft 130 is provided with a worm 131. The rotor shaft 130 is rotatably supported within the motor housing 113 via a bearing assembly 225 having at least one first and second bearing element 226,227. Preferably, the bearing elements 226, 227 are formed as ball bearings. Preferably, the bearing element 226 is a B-type bearing (B-Lager), which preferably has a sliding seat. At that time, the bearing element 226 is arranged at the axial end portion of the metal sheet laminate 221 on the first end 228 side, and the bearing element 227 is the second end of the metal sheet laminate 221. It is arranged at the end in the axial direction on the side of the portion 229.

  Furthermore, FIG. 2 shows a bearing cap 120 having a preferably cylindrical base body 231 which preferably forms an internal housing 234. The inner housing portion 234 is preferably formed so as to house at least a part of the stator 210. The bearing cap 120 preferably has a cavity 235 at the end of the bearing cap 120 on the side of the second end 112, through which preferably three connecting elements 127 or 215 to 217 pass. Furthermore, the bearing cap 120 has a receiving area 232 at the end of the bearing cap 120 on the second end 112 side side, which preferably receives at least a part of the second bearing element 227. As a result, the bearing fixing function is incorporated in the bearing cap 120. The accommodating area 232 preferably has a smaller diameter than the cylindrical base body 231.

  Preferably, the bearing cap 120 replaces the conventional clamp (Klemmbrille) in the prior art. As a result, at least better handling of the rotor configuration group 198 can be realized. Preferably, the bearing cap 120 is elastically deformable. The bearing cap 120 preferably forms at least one axial and radial support of the rotor assembly 198. The motor housing 113 is then centered, preferably axially and radially, via the bearing cap 120. On the other hand, the bearing cap 120 centers the motor module 110 on the transmission housing 140 via the bearing element 227. Preferably, the bearing element 227 is an A-type bearing (A-Lager) or a fixed-side bearing. The axial preloading of the bearing element 227 into the transmission mechanism housing 140 is then effected by the adjustable position of the bearing cap 120.

  Furthermore, the bearing assembly 225 is preferably formed as a support for the motor module 110. Preferably, bearing assembly 225 or bearing elements 226, 227 are preloaded in an X-shaped arrangement. The bearing elements 226, 227 are then preferably fixed in an X-shaped arrangement via laser welding. However, additionally, the arrangement of the supports may have any other arrangement or preload, for example an O-shaped arrangement.

  FIG. 3 shows the stator 210 of FIG. 2 with a plastic jacket 211, a preferably segmented stator core 213, a stator winding 212 and a connecting device 214. 3 shows the arrangement of the connecting device 214, in particular the stator winding 212 by connecting the individual windings 312. For the connection of the individual windings 312, the connection device 214 has a contact connection element 310. Preferably, the contact connection element 310 is formed as an insulation displacement contact with an accommodation area 311 for accommodating each individual winding 312. This type of crimp contact is well known in the prior art and therefore, for the sake of brevity, a detailed description is omitted.

  In the specific example and by way of example, the contact connection element 310 is arranged in the longitudinal direction 107 and is preferably formed to receive the individual winding 312 in the radial direction. However, the contact connection element 310 may be arranged laterally or in any other direction and / or may house the respective individual winding 312 axially or in any other direction.

  FIG. 4 shows the stator 210 located within the motor housing 113 of FIG. Preferably, the stator 210 is fixed, preferably shrink-fit and / or glued within the motor housing 113. At this time, the stator 210 is fixed in the motor housing 113 in the direction of arrow 402.

  FIG. 5 shows the preassembled rotor shaft 130 of FIG. 2 with the permanent magnet 125 and the bearing cap 120. Preferably, the bearing cap 120 is arranged on the rotor shaft 130 via a bearing element 227. To this end, the bearing cap 120 preferably has an internal housing 412 in the housing area 232. Inner housing 412 is preferably formed to house at least a portion of bearing element 227.

  Further, FIG. 5 reveals the configuration of the void 235. Preferably, a space 235 is assigned for each connecting element 127 or 215-217. Preferably, the connecting element 215 is assigned a void 413, the connecting element 216 is assigned a void 414, and the connecting element 217 is assigned a void 415.

  FIG. 6 shows the rotor configuration group 198 of FIG. 1, and in comparison with FIG. 5, the rotor set 221 is arranged at the end of the bearing cap 120 on the first end 228 side. Further, a bearing element 226 is arranged at the end of the rotor set 221 on the first end 228 side.

Preferably, assembly of rotor assembly 198 is at least:
Fixing the bearing element 227 in the receiving part 412 of the bearing cap 120,
Attach the bearing cap 120 to the rotor shaft 130,
Attach the rotor set 221 to the rotor shaft 130,
Securing another bearing element 226 to the rotor shaft 130,
Has the steps.

  FIG. 7 shows the motor module 110 of FIG. 2 with the rotor assembly 198 located within the motor housing 113 and preferably press fit into the motor housing 113 in the direction of arrow 422. At that time, preferably, the bearing cap 120 is press-fitted into the motor housing 113. The rotor shaft 130 is then supported by the bearing element 226 in the bearing housing area 117 of the motor housing 113 at the first axial end 228 of the rotor shaft 130.

  FIG. 8 shows the motor module 110 of FIG. 7, in which the connection elements 215 to 217 are arranged in the terminal block 430. For this purpose, the terminal block 430 preferably has receptacles 431-433 assigned to each connecting element 215-217, the receptacle 431 for the connecting element 215, the receptacle 432 for the connecting element 216, and the like. The housing 433 is assigned to the connecting element 217. The accommodating parts 431-433 are preferably formed to accommodate the connection elements 215-217 in the axial direction. Furthermore, the terminal block 430 preferably has connecting sections 435-437 assigned to the receiving parts 431-433 in the lateral direction 106. The connection areas 435 to 437 are provided to form a pressure connection between the connection elements 215 to 217 and the electrical lines (511; FIG. 11) assigned to the transmission cover 160.

  FIG. 9 shows the motor module 110 of FIG. 8 arranged in the transmission mechanism housing 140. For this purpose, the motor module 110 is screwed into the transmission mechanism housing 140. The support area 132 of the rotor shaft 130 is then arranged in the support area 145 of the transmission housing 140. Preferably, the coupling interface 131 of the rotor shaft 130 is located within the receiving area 144 of the transmission housing 140 and preferably interacts with the coupling geometry 152 of the helical gear transmission 150. It is connected. The permanent magnet 125 is preferably located within the receiving area 148 of the transmission housing 140. Furthermore, the flange element 115 of the motor module 110 abuts the coupling flange 141 or the assigned flange portion 196.

  Further, the helical gear 151 of the helical gear transmission mechanism 150 is arranged in the transmission mechanism housing 140. Preferably, the transmission mechanism housing 140 is formed such that the drive pin 153 is exposed at its lower end, in a specific example, for connection with a wiper arm and / or crank.

  FIG. 10 shows the wiper drive unit 100 of FIG. 1 including a motor module 110 arranged in the transmission mechanism housing 140 and a transmission mechanism cover 160 arranged in the transmission mechanism housing 140. The transmission mechanism cover 160 is preferably mounted on the transmission mechanism housing 140 in the direction of arrow 451. At that time, the positioning groove 161 of the transmission mechanism cover 160 is arranged on the peripheral edge 149 of the transmission mechanism housing 140. In this case, preferably, as described above, a crimping connection is formed between the connecting elements 215 to 217 and the electrical line (511; FIG. 11) assigned to the transmission cover 160.

  FIG. 11 shows the wiper drive 100 of FIGS. 1 and 10 and reveals the arrangement of the bearing element 226 within the bearing receiving area 117 of the motor housing 113. Further, FIG. 11 reveals that preferably a portion of the bearing cap 120 is located within the motor housing 113. The bearing element 227 is then preferably arranged partly in the receiving part 412 of the bearing cap 120 and partly in the support area 199 of the transmission housing 140. As a result, it is possible to provide the wiper drive unit 100 that requires only a relatively short axial space.

  Further, the permanent magnet 125 is arranged in the accommodation area 148 as described above. An electronic unit 520 is assigned to the transmission mechanism cover 160. At that time, the electronic unit 520 is preferably arranged in the transmission mechanism cover 160 above the permanent magnet 125 in the specific example. The electronic unit 520 is preferably assigned at least one sensor element 522. Sensor element 522 is configured to detect rotor position. The sensor element 522 is preferably located above the permanent magnet 125 in the exemplary embodiment. Preferably, the sensor element 522 is a magnetic sensor. According to another embodiment, the sensor element 522 may be arranged in the region of the second axial end 229 of the rotor shaft 130. The sensor element 522 is then preferably designed as an Axial-RLS-Sensor.

  Preferably, the connecting section 131 is arranged in the receiving section 144 of the transmission housing 140, as described above. Furthermore, the support area 132 of the rotor shaft 130 is arranged in the support area 145 of the transmission housing 140. In the example, the support section 145 is provided with a support sleeve 246, which is preferably fixed in the transmission housing 140, for example by press fit in the support section 145. However, the support area 132 of the rotor shaft 130 may also be supported directly within the support area 145 of the transmission housing 140.

  Further, FIG. 11 shows the connecting element 127, which in an embodiment passes through the cavity 235 of the bearing cap 120 and is preferably arranged in the terminal block 430. Preferably, as described above, an insulation displacement connection is formed between the connecting element 127 and the electrical line 511 assigned to the transmission cover 160. The electrical line 511 is then connected to the electronic unit 520. Furthermore, the electronic unit 520 preferably has a control device.

Claims (11)

A wiper drive unit (100) for an automobile wiper device, comprising:
A helical gear transmission mechanism (150),
A drive motor (129) for driving the helical gear transmission mechanism (150);
Equipped with
The helical gear transmission mechanism (150) has a drive pin (153) used for mounting a wiper arm or a crank of the wiper device, and a helical gear (151) driving the drive pin (153). Then
A transmission mechanism housing (140) having a transmission mechanism cover (160) is assigned to the helical gear transmission mechanism (150).
In the wiper drive unit (100),
The drive motor (129) is formed as a replaceable motor module (110),
The replaceable motor module (110) is preferably removably attached to the transmission mechanism housing (140),
A wiper drive unit characterized by the above.   The wiper drive of claim 1, wherein the replaceable motor module (110) comprises a motor housing (113), a stator (210), and a rotor assembly (198).   A wiper according to claim 2, characterized in that said rotor assembly (198) comprises a rotor shaft (130), a rotor set (221), a bearing assembly (225) and a bearing cap (120). Drive part.   4. The bearing assembly (225) and the bearing cap (120) of claim 3, wherein the bearing assembly (225) and the bearing cap (120) are configured to radially and axially support the replaceable motor module (110). Wiper drive.   At least a part of the bearing assembly (225) and the bearing cap (120) is arranged in the transmission mechanism housing (140) in a state where the wiper driving part (100) is assembled. The wiper drive unit according to claim 3 or 4.   The rotor shaft (130) has a connecting interface (131), and the connecting interface (131) interacts with the helical gear (151) of the helical gear transmission mechanism (150). The wiper drive unit according to claim 3, wherein the wiper drive unit is connected to the wiper drive unit.   The replaceable motor module (110) comprises at least one connection element (127), said connection element (127) having a terminal block (430) for electrical connection with an electronic unit (520). The wiper drive unit according to any one of claims 1 to 6, characterized in that   A wiper drive according to any one of the preceding claims, characterized in that the replaceable motor module (110) comprises a motor that is electronically commutated. A wiper drive unit (100) for an automobile wiper device, comprising a helical gear transmission mechanism (150) and a drive motor (129) for driving the helical gear transmission mechanism (150), The helical gear transmission mechanism (150) has a drive pin (153) used for mounting a wiper arm or a crank of the wiper device, and a helical gear (151) driving the drive pin (153). A method for assembling a wiper drive unit (100), wherein the helical gear transmission mechanism (150) is assigned a transmission mechanism housing (140) having a transmission mechanism cover (160).
A motor module (110) that forms the drive motor (129) and is attachable to the transmission mechanism housing (140) is prepared.
Attaching the motor module to the transmission mechanism housing (140);
Assembling the helical gear transmission mechanism (150) in the transmission mechanism housing (140),
Attaching the transmission mechanism cover (160) to the transmission mechanism housing (140);
A method of assembling the wiper drive unit, which is characterized by the steps of. Fixing the stator (210) assigned to the drive motor (129) in the assigned motor housing (113);
Assemble the rotor component group (198),
Installing the rotor assembly (198) in the motor housing (113),
Fixing the terminal block (430) to at least one connecting element (127) assigned to the drive motor (129),
10. The method according to claim 9, characterized by the further step of: The assembly of the rotor assembly (198) is
Fixing the bearing element (227) in the receiving part (412) of the bearing cap (120),
Attaching the bearing cap (120) to the rotor shaft (130),
Attach the rotor set (221) to the rotor shaft (130),
Fixing another bearing element (226) to the rotor shaft (130),
11. The method according to claim 10, comprising the step of: