JP6186939B2 - Vehicle door opening and closing drive device - Google Patents

Description

  The present invention relates to a vehicle door opening / closing drive device.

  2. Description of the Related Art Conventionally, as a vehicle door opening / closing drive device, for example, a device described in Patent Document 1 is known. In this device, a drive tape (rope member) spanned around a pulley or the like is linked to a vehicle door (slide door) supported by the vehicle body. Then, the drive door is moved by the electric motor to drive the vehicle door in the vehicle front-rear direction (open / close drive).

  As shown in FIG. 5, as the support member 91 that rotatably supports the pulley 90, a member that integrally includes a bottom wall portion 91a and a lid wall portion 91b arranged in parallel in the vehicle height direction is known. . The bottom wall portion 91a and the lid wall portion 91b sandwich the pulley 90 in the vehicle height direction, and support the support pin 92 penetrating with the pulley 90 in the vehicle height direction in a non-rotatable manner. The pulley 90 is rotatably supported around the support pin 92.

Japanese Patent No. 3651186

  By the way, in such a support structure of the pulley 90, when water droplets or the like adhering between the pulley 90 and the bottom wall portion 91a are frozen in a low temperature environment and become ice, for example, the pulley 90 or the like becomes non-rotatable. The door may become inoperable. Alternatively, there is a possibility that the pulley 90 or the rope member hung on the pulley 90 may involve ice and generate noise.

  An object of the present invention is to provide a vehicle door opening / closing drive device capable of quickly discharging water droplets and the like adhering between a pulley and a support member supporting the pulley and suppressing freezing thereof.

  A vehicle door opening / closing drive device that solves the above problems opens and closes a plurality of pulleys including a driving pulley driven by an electric drive source, and an opening formed in the vehicle body by being hung on the plurality of pulleys. A rope member linked to the vehicle door, and the vehicle door is configured to open and close the opening by moving the rope member by driving the driving pulley. A support member that rotatably supports at least one of the pulleys, and the support member can rotate the pulley around an axis extending in the direction at a bottom wall portion disposed below the pulley in the vehicle height direction. The bottom wall is formed with an inclined surface that is inclined downward in the vehicle height direction toward the radially outer side centering on the pulley axis.

  According to this configuration, water droplets or the like attached between the corresponding pulley supported by the bottom wall portion (support member) and the bottom wall portion can be smoothly discharged along the inclined surface to be frozen. Can be suppressed.

The pulley supported by the bottom wall portion is disposed at a front-rear direction front end portion of the support member, and the support member is erected in the vehicle height direction and extends in the vehicle front-rear direction. A vertical wall portion and a water blocking wall portion that is connected to the front end portion of the vertical wall portion on the pulley side in the vehicle front-rear direction and bends from the vertical wall portion toward the outside intersecting with the extending direction. you.

  According to this configuration, the pulley or the like gets wet and freezes by blocking the water droplets or the like that try to enter the pulley supported by the bottom wall portion through the vertical wall portion by the water blocking wall portion. Can be suppressed.

  In the vehicle door opening and closing drive device, the support member includes a lower flange that extends from the lower end of the vertical wall portion to both sides in the vehicle width direction, and an upper side that extends from the upper end of the vertical wall portion to both sides in the vehicle width direction. A flange, and a reinforcing wall portion that is connected to a front-rear vehicle front-end portion on the pulley side of the vertical wall portion and bends inward from the vertical wall portion and intersects the extending direction thereof, It is preferable that upper ends of the water blocking wall portion and the reinforcing wall portion are connected to the upper flange, and lower ends of the water stopping wall portion and the reinforcing wall portion are connected to the lower flange.

  According to this configuration, the water blocking wall portion and the reinforcing wall portion extend from the vertical wall portion to the outside and the inside that intersect with the extending direction, respectively, and the water blocking wall portion and the reinforcing wall The upper end of the part is connected to the upper flange, and the lower end is connected to the lower flange, whereby the strength of the support member can be increased.

  In the vehicle door opening and closing drive device, the rope member is a toothed belt, and the pulley supported by the bottom wall portion includes a belt wheel portion formed with a plurality of teeth that mesh with the toothed belt, and It is preferable to include a retaining portion that extends radially outward from the lower end of the belt wheel portion, and a drain portion that is formed by opening the retaining portion between the plurality of adjacent teeth.

  According to this structure, the said pulley (toothed pulley) can discharge | emit quickly the water droplet etc. which adhered to this pulley through the said drainage part, and can suppress the freezing. That is, since the retaining portion is opened between the plurality of adjacent teeth, water droplets adhering to the pulley can be prevented from collecting and freezing can be suppressed. Moreover, the mass of the pulley (toothed pulley) can be reduced by opening the retaining portion.

In the vehicle door opening and closing drive device, it is preferable that the water blocking wall portion and the reinforcing wall portion are disposed at positions in the vehicle front-rear direction equivalent to each other on the vertical wall portion.
According to this structure, the said water stop wall part and the said reinforcement wall part can increase the intensity | strength of the said supporting member of the said pulley vicinity by those cooperation.

  The present invention has an effect that water droplets and the like adhering between a pulley and a support member that supports the pulley can be quickly discharged to prevent freezing.

The top view which shows one Embodiment of this invention. (A), (c), (d) is sectional drawing which followed the 2A-2A line, 2C-2C line, 2D-2D line of FIG. 1, (b) is the 2B-2B line of (a). FIG. The perspective view which shows a driven pulley. The side view which shows the vehicle with which the same embodiment is applied. The longitudinal cross-sectional view which shows a prior art form.

  Hereinafter, an embodiment of a vehicle door opening / closing drive device will be described. In the following, the vehicle front-rear direction is referred to as “front-rear direction”, and the upper and lower directions in the vehicle height direction are referred to as “upward” and “downward”, respectively. Further, the inner side in the vehicle width direction toward the vehicle interior is referred to as “vehicle inner side”, and the outer side in the vehicle width direction toward the vehicle outer side is referred to as “vehicle outer side”.

  As shown in FIG. 4, the vehicle body 10 such as an automobile has an upper rail 11 and a lower rail 12 that extend in the front-rear direction along the upper and lower edges of an entrance 10 a as an opening formed on the side of the vehicle body 10. Each is installed. Further, the vehicle body 10 is provided with a center rail 13 extending in the front-rear direction in the quarter panel 10b behind the entrance 10a. The upper rail 11, the lower rail 12, and the center rail 13 support the slide door 20 so as to be movable in the front-rear direction via guide roller units 14, 15, and 16, respectively. The sliding door 20 opens and closes the entrance 10a as it moves in the front-rear direction.

  As shown in FIG. 1, the lower rail 12 is made of, for example, a metal plate, and has a curved portion 12 a at a longitudinal intermediate portion thereof, and a curved portion 12 b that is inclined toward the vehicle inner side at the front end side of the curved portion 12 a. And a linear portion 12c extending rearward of the vehicle on the rear end side of the curved portion 12a.

  The vehicle body 10 is provided with a drive unit 21 adjacent to the inner side of the lower rail 12. The drive unit 21 has a frame portion 22 as a support member made of, for example, a resin material that extends in the front-rear direction along the lower rail 12, and has a drive portion 25 installed at the front end portion of the frame portion 22. . A driven pulley 23 as a pulley is supported at the rear end portion of the frame portion 22 so as to be rotatable around an axis extending in the vehicle height direction, and is idled as a pulley at a middle portion in the front-rear direction near the curved portion 12a. The pulley 24 is supported so as to be rotatable around an axis extending in the vehicle height direction.

  On the other hand, the drive unit 25 includes an attachment member 26 made of, for example, a metal plate, and a motor 27 with a speed reducer fixed to the attachment member 26. The motor 27 rotationally drives a driving pulley 27a connected to the output shaft about an axis extending in the vehicle height direction. A tension pulley 28 as a pulley is supported on the mounting member 26 so as to be adjacent to the lower side of the pulley 27a in the figure so as to be rotatable about an axis extending in the vehicle height direction, and adjacent to the lower left side of the pulley 27a in the figure. A driven pulley 29 as a pulley is supported so as to be rotatable around an axis extending in the vehicle height direction.

  A ring-shaped rope member and an endless toothed belt 30 as a toothed belt are wound around the driven pulley 23 and the like. That is, the endless toothed belt 30 extending rearward of the vehicle from the front driven pulley 29 toward the rear driven pulley 23 on the side close to the lower rail 12 is wound around the driven pulley 23 counterclockwise as shown in FIG. Turn to the front of the vehicle on the far side. An endless toothed belt 30 extending forward of the vehicle toward the idle pulley 24 is wound clockwise around the idle pulley 24 on the side close to the lower rail 12 and is shown on the tension pulley 28 on the side close to the lower rail 12. Winded clockwise. Subsequently, the endless toothed belt 30 is wound around the pulley 27a in the illustrated counterclockwise direction on the side away from the lower rail 12, and is wound on the front driven pulley 29 in the illustrated counterclockwise direction on the side close to the lower rail 12. It turns rearward and is connected to a part on the side close to the lower rail 12.

  Therefore, when the pulley 27a is rotationally driven by the motor 27, the endless toothed belt 30 moves along the frame portion 22 (lower rail 12) in a direction corresponding to the rotational direction. In addition, a substantially trapezoidal bracket 31 made of, for example, a metal plate is fixed to a predetermined position on the side close to the lower rail 12 of the endless toothed belt 30 (position in the vicinity of the driven pulley 23 in the state of FIG. 1). The guide roller unit 15 is fastened to the bracket 31.

  Here, in FIG. 1, for example, it is assumed that the driving pulley 27a rotates clockwise in the figure. At this time, the endless toothed belt 30 as a whole rotates clockwise in the figure, whereby the bracket 31 to which the guide roller unit 15 is fixed moves forward of the vehicle and the slide door 20 is closed. On the contrary, it is assumed that the driving pulley 27a rotates counterclockwise in the figure. At this time, the endless toothed belt 30 as a whole rotates counterclockwise in the figure, whereby the bracket 31 to which the guide roller unit 15 is fixed moves rearward of the vehicle, and the slide door 20 is opened.

  In particular, the slide door 20 is pushed out of the vehicle immediately after the guide roller unit 15 is guided to the curved portion 12a or the curved portion 12b, for example, immediately after opening from the fully closed position, or immediately before the fully closed position is reached. Is pulled into the car. This is because the sliding door 20 is allowed to slide backward when the sliding door 20 is opened, and is arranged so as to be flush with the side surface of the vehicle body 10 when the sliding door 20 is fully closed.

Next, the structure of the frame portion 22 and the like will be described.
As shown in FIG. 2 (a), the frame portion 22 basically includes a vertical wall portion 22a standing in the vehicle height direction and extending in the front-rear direction, and a vehicle width from the lower end of the vertical wall portion 22a. The lower flange 22b extending in the both sides in the direction and the upper flange 22c extending in the vehicle width direction from the upper end of the vertical wall portion 22a are integrally formed to have a substantially I-shaped cross section. In addition, the vehicle outer side portion spanned between the driven pulleys 23 and 29 of the endless toothed belt 30 and the vehicle inner side portion spanned between the driven pulley 23 and the tension pulley 28 are separated from each other by the vertical wall portion 22a. It has been.

  As shown in FIG. 2B, a water blocking wall 41 and a reinforcing wall 42 that are bent toward the vehicle outer side and the vehicle inner side are connected to the rear end of the vertical wall portion 22a adjacent to the driven pulley 23, respectively. . The lower ends of the water blocking wall portion 41 and the reinforcing wall portion 42 are connected to the lower flange 22b, and the upper ends are connected to the upper flange 22c.

  As shown in FIG. 2C, the rear end portion of the lower flange 22b forms a bottom wall portion 43 that is disposed below the driven pulley 23 and rotatably supports the driven pulley 23. On the upper surface of the bottom wall portion 43, an inclined surface 43 a is formed that inclines downward toward the radially outer side centering on the axis of the driven pulley 23. On the other hand, the frame portion 22 integrally includes a lid wall portion 44 disposed above the bottom wall portion 43 so as to be substantially parallel to the bottom wall portion 43. The lid wall portion 44 is disposed above the driven pulley 23 and rotatably supports the driven pulley 23.

  That is, a substantially stepped columnar support pin 47 having a center line extending in the vehicle height direction and passing through the bottom wall portion 43 and the lid wall portion 44 is supported on the frame portion 22 in a non-rotatable manner. The driven pulley 23 is rotatably supported around the support pin 47.

  Further, as shown in FIG. 2 (d), in the middle part in the front-rear direction of the frame part 22, a bottom that protrudes upward from the lower flange 22b is used instead of the projecting part toward the vehicle inner side of the lower flange 22b. A wall portion 45 is formed. The bottom wall 45 is disposed below the idle pulley 24 and rotatably supports the idle pulley 24. Also on the upper surface of the bottom wall portion 45, an inclined surface 45a that is inclined downward toward the radially outer side centering on the axis of the idle pulley 24 is formed.

  Furthermore, a lid wall portion 46 that protrudes below the upper flange 22c is formed at the middle portion in the front-rear direction of the frame portion 22 in place of the projecting portion toward the vehicle inner side of the upper flange 22c. The lid wall portion 46 is disposed above the idle pulley 24 and rotatably supports the idle pulley 24.

  That is, a substantially stepped columnar support pin 48 having a center line extending in the vehicle height direction and penetrating the bottom wall portion 45 and the lid wall portion 46 is supported on the frame portion 22 in a non-rotatable manner. An idle pulley 24 is rotatably supported around the support pin 48.

  As shown in FIG. 3, the driven pulley 23 is formed of a resin material, for example, and has a belt wheel portion 51 whose axis extends in the vehicle height direction, and has a diameter from the lower end and the upper end of the belt wheel portion 51. A pair of retaining portions 52 and 53 extending outward in the direction are provided. A plurality of teeth 51a extending in parallel with the axial direction are formed at equal angular intervals on the outer periphery of the belt wheel portion 51 over the entire circumference. The plurality of teeth 51 a are formed so as to mesh with the endless toothed belt 30.

  The retaining portion 52 includes a plurality of retaining claws 52a that are uneven at equal angular intervals according to the unevenness of the plurality of teeth 51a. Therefore, in the circumferential direction, the positions of the tip and the root of each tooth 51a coincide with the positions of the tip and the bottom of the retaining claw 52a, respectively. A plurality of substantially V-shaped drainage portions 52b communicating with each other in the vehicle height direction are formed between a plurality of adjacent retaining claws 52a. In other words, the plurality of drainage parts 52b are formed by opening the retaining parts 52 between the plurality of adjacent teeth 51a.

  Similarly, the retaining portion 53 is also composed of a plurality of retaining claws 53a that are uneven at equal angular intervals in accordance with the unevenness of the plurality of teeth 51a. Therefore, in the circumferential direction, the positions of the tip and the root of each tooth 51a coincide with the positions of the tip and the bottom of the retaining claw 53a, respectively. Between a plurality of adjacent retaining claws 53a, a plurality of substantially V-shaped drainage portions 53b communicating in the vehicle height direction are formed.

  The driven pulley 23 configured as described above is rotatably supported around the support pin 47 by inserting the support pin 47 into a substantially circular bearing hole 23a having a central portion opened in the vehicle height direction. Is done.

Next, the operation of this embodiment will be described.
As shown in FIG. 2 (c), the frame portion 22 supports the driven pulley 23 rotatably around an axis extending in the vehicle height direction at a bottom wall portion 43 disposed below the driven pulley 23. . An inclined surface 43 a is formed on the bottom wall 43. For this reason, for example, water droplets or the like adhering between the driven pulley 23 and the bottom wall 43 are smoothly discharged along the inclined surface 43a when running in the rain or during car washing.

  Further, as shown in FIG. 2D, the frame portion 22 supports the idle pulley 24 rotatably around an axis extending in the vehicle height direction at a bottom wall portion 45 disposed below the idle pulley 24. ing. An inclined surface 45 a is formed on the bottom wall portion 45. Therefore, similarly, water droplets and the like adhering between the idle pulley 24 and the bottom wall portion 45 are smoothly discharged along the inclined surface 45a.

As described above in detail, according to the present embodiment, the following effects can be obtained.
(1) In this embodiment, water droplets and the like adhering between the driven pulley 23 and the bottom wall portion 43 can be smoothly discharged along the inclined surface 43a to suppress freezing. Further, water droplets or the like adhering between the idle pulley 24 and the bottom wall portion 45 can be smoothly discharged along the inclined surface 45a to suppress freezing. For example, the driven pulley 23 or the idle pulley 24 becomes unable to rotate due to the influence of ice, and the sliding door 20 cannot be opened or closed, or the driven pulley 23 or the idle pulley 24 or the endless toothed belt 30 entrains the ice. It is possible to prevent abnormal noise from being generated.

  (2) In the present embodiment, the frame portion 22 has a water blocking wall portion 41 that is connected to the rear end of the vertical wall portion 22a and bends from the vertical wall portion 22a toward the vehicle exterior side. Accordingly, by blocking the water droplets and the like that are about to enter the driven pulley 23 supported by the bottom wall portion 43 through the vertical wall portion 22a with the water blocking wall portion 41, the driven pulley 23 and the like are prevented from getting wet and freezing. be able to. Further, the water blocking wall portion 41 is effective for water stopping particularly when high pressure cleaning is performed.

  (3) In the present embodiment, the water blocking wall portion 41 and the reinforcing wall portion 42 extend on both sides in the vehicle width direction with the vertical wall portion 22a interposed therebetween, and the upper ends of the water blocking wall portion 41 and the reinforcing wall portion 42. Is connected to the upper flange 22c and the lower end is connected to the lower flange 22b, whereby the strength of the frame portion 22 can be increased.

  In particular, the water blocking wall portion 41 and the reinforcing wall portion 42 are arranged at positions (rear ends) in the longitudinal direction equivalent to each other of the vertical wall portion 22a, so that the frame portion 22 in the vicinity of the driven pulley 23 by their cooperation. The strength of can be increased.

  (4) In this embodiment, the driven pulley 23 includes a drainage portion 52b formed by opening the retaining portion 52 between a plurality of adjacent teeth 51a. For this reason, the driven pulley 23 (toothed pulley) can quickly discharge water droplets and the like adhering thereto through the plurality of drainage portions 52b on the lower side to suppress freezing. That is, since the retaining portion 52 is opened between a plurality of adjacent teeth 51a, water droplets adhering to the driven pulley 23 are less likely to accumulate and freezing can be suppressed. Further, the mass of the driven pulley 23 can be reduced by opening the retaining portion 52.

  (5) In the present embodiment, the drainage portions 52b and 53b are formed in the both retaining portions 52 and 53, respectively, so that the driven pulley 23 has a substantially vertically symmetric structure, so that the driven pulley can be used in an upside down posture. 23 can be assembled. For this reason, the freedom degree of the installation attitude | position of the driven pulley 23 can be increased, and an assembly | attachment property can be improved.

  When the driven pulley 23 is assembled in an upside down posture, the driven pulley 23 can quickly discharge water droplets and the like adhering thereto through the lower drainage portion 53b in this case to suppress freezing. In particular, since the lower retaining portion 53 is opened between a plurality of adjacent teeth 51a, water droplets adhering to the driven pulley 23 are less likely to accumulate and freezing can be suppressed. Further, the mass of the driven pulley 23 can be reduced by opening the retaining portion 53.

In addition, you may change the said embodiment as follows.
-In the above-mentioned embodiment, you may make it provide drainage part 52b in some (for example, every other one) between a plurality of adjacent teeth 51a.

In the embodiment, the retaining portion 53 on the upper side of the driven pulley 23 may be annular. That is, the retaining claws 53a and the drainage portions 53b may be omitted.
In the embodiment, the retaining part 52 on the lower side of the driven pulley 23 may be annular. That is, the retaining claws 52a and the drainage part 52b may be omitted. In this case, the driven pulley 23 may not be toothed.

In the embodiment, the driven pulley 23 may be composed of a single member or a combination of a plurality of members.
In the above embodiment, the idle pulley 24 may have the same structure as the driven pulley 23.

  -In the above-mentioned embodiment, idle pulley 24 may be constituted by a single member, and may be constituted by combination of a plurality of members. The idle pulley 24 may be toothed.

In the above-described embodiment, the axial direction of the driven pulley 23 or the idle pulley 24 in the vehicle mounted state may not completely match the vehicle height direction (gravity direction).
In the embodiment, the water blocking wall portion 41 and the reinforcing wall portion 42 may be disposed at different positions in the front-rear direction of the vertical wall portion 22a. For example, at least one of the water blocking wall portion 41 and the reinforcing wall portion 42 may not be disposed at the rear end as long as it is the rear end portion of the vertical wall portion 22a.

  -In the said embodiment, even if the extension direction of the water blocking wall part 41 has faced the outer side which cross | intersects the extension direction of the vertical wall part 22a, even if it does not correspond completely to a vehicle width direction Good. Similarly, the extending direction of the reinforcing wall portion 42 may not completely coincide with the vehicle width direction as long as it is directed inwardly intersecting the extending direction of the vertical wall portion 22a.

In the embodiment, the reinforcing wall portion 42 may be omitted. In this case, the lower flange 22b and the upper flange 22c of the frame portion 22 may be omitted.
In the embodiment, the water blocking wall portion 41 may be omitted. In this case, the cross-sectional shape of the frame portion 22 is arbitrary as long as it extends in the front-rear direction.

  In the embodiment, the inclined surface 43a may be formed on the bottom wall portion 43 over the entire circumferential direction centering on the axis of the driven pulley 23, or only a part (for example, the bottom wall portion 43 of the bottom wall portion 43). It may be formed on the tip side of the support pin 47). Similarly, the inclined surface 45a may be formed in the bottom wall portion 45 over the entire circumferential direction around the axis of the idle pulley 24, or only a part (for example, the support pin 48 of the bottom wall portion 45). It may be formed on the tip side or the like.

  In the embodiment, the bottom wall portion 43 may be independent of the lower flange 22b. In this case, the bottom wall portion 43 may be connected to the lower end of the vertical wall portion 22a (water blocking wall portion 41 or the like), for example.

In the embodiment, the bottom wall portion 45 may be configured as a part of the lower flange 22b.
In the above-described embodiment, the driven pulley 23 may be prevented from coming off upward by an appropriate flange formed on the upper end portion of the support pin 47 instead of the lid wall portion 44. Similarly, instead of the lid wall portion 46, the idle pulley 24 may be prevented from coming off upward by an appropriate flange formed at the upper end portion of the support pin 48.

In the embodiment, the frame part 22 may be made of metal. For example, the frame portion 22 may be formed of one or a plurality of metal plates.
In the embodiment, instead of the endless toothed belt 30 as the rope member, for example, a wire, a cable, a toothless belt, or the like may be employed.

DESCRIPTION OF SYMBOLS 10 ... Vehicle body, 10a ... Entrance / exit (opening), 20 ... Sliding door (vehicle door), 22 ... Frame part (support member), 22a ... Vertical wall part, 22b ... Lower flange, 22c ... Upper flange, 27 ... Motor (electrical drive source), 27a ... driving pulley, 23, 29 ... driven pulley (pulley), 24 ... idle pulley (pulley), 28 ... tension pulley (pulley), 27a ... pulley, 30 ... with endless teeth Belt (rope member, toothed belt), 41 ... water blocking wall part, 42 ... reinforcing wall part, 43, 45 ... bottom wall part, 43a, 45a ... inclined surface, 51 ... belt wheel part, 51a ... tooth, 52, 53: retaining part, 52b, 53b ... draining part.

Claims (4)

A plurality of pulleys including a driving pulley driven by an electrical drive source;
A rope member linked to a vehicle door that opens and closes an opening formed in the vehicle body by being hung on the plurality of pulleys,
The vehicle door is configured to open and close the opening by moving the rope member by driving the driving pulley,
A support member that extends in the vehicle longitudinal direction and rotatably supports at least one of the plurality of pulleys;
The support member supports the pulley rotatably around an axis extending in the direction at the bottom wall portion disposed below the pulley in the vehicle height direction,
The bottom wall portion is formed with an inclined surface that is inclined downward in the vehicle height direction toward the radially outer side centering on the pulley axis .
The pulley supported by the bottom wall portion is disposed at a front-rear direction front end portion of the support member,
The support member is
A vertical wall portion standing in the vehicle height direction and extending in the vehicle longitudinal direction;
The vehicle has a water blocking wall portion that is connected to the front-rear vehicle front-end portion of the vertical wall portion on the pulley side and bends from the vertical wall portion toward the outside intersecting with the extending direction. Door opening and closing drive device. The vehicle door opening / closing drive device according to claim 1 ,
The support member is
A lower flange extending from the lower end of the vertical wall portion to both sides in the vehicle width direction;
An upper flange extending from the upper end of the vertical wall to both sides in the vehicle width direction;
A reinforcing wall portion that is connected to the front end portion of the vertical wall portion on the pulley side in the vehicle front-rear direction and bends inward from the vertical wall portion to intersect the extending direction;
The upper ends of the water blocking wall portion and the reinforcing wall portion are connected to the upper flange,
The vehicle door opening and closing drive device, wherein lower ends of the water blocking wall portion and the reinforcing wall portion are connected to the lower flange. The vehicle door opening / closing drive device according to claim 2 ,
The said water stop wall part and the said reinforcement wall part are the door opening / closing drive devices for vehicles arrange | positioned in the position of the said vehicle longitudinal direction equivalent to the said vertical wall part. In the vehicle door opening and closing drive device according to any one of claims 1 to 3,
The rope member is a toothed belt;
The pulley supported by the bottom wall is
A belt wheel portion formed with a plurality of teeth meshing with the toothed belt;
A retaining portion extending radially outward from a lower end of the belt wheel portion;
A vehicle door opening / closing drive device comprising: a drainage portion formed by opening the retaining portion between the plurality of adjacent teeth.