JP6937563B2 - Vehicle door switchgear - Google Patents

Description

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

A vehicle door opening / closing device is known that includes a support member interposed between a back door that opens / closes a rear opening of a vehicle and a body, and the back door can be held in an open position by the support member (for example,). , Patent Document 1). The support member includes an inner cylinder and an outer cylinder that are concentrically arranged and slidably fitted. The inner cylinder contains elements such as an electric motor that generates a driving force and a reduction gear mechanism that decelerates the rotation of the electric motor. The outer cylinder contains elements such as a spindle, a spindle nut, a guide tube, a coil spring, and a push rod. The spindle is rotationally driven by the electric motor. The spindle nut is screwed onto the spindle. The rotation of the spindle causes the inner cylinder to move in the axial direction together with the spindle nut and the push rod. The coil spring urges the push rod and the outer cylinder in the axial direction. The guide tube accommodates the coil spring and guides the push rod in a slidable manner.

When the back door in the closed state is opened in the vehicle door opening / closing device provided with such a support member, the electric motor is driven in response to the opening operation. The rotation of the electric motor is decelerated by the reduction gear mechanism and transmitted to the spindle, and the spindle is rotationally driven. When the spindle rotates, the spindle nut moves (extrudes) in the axial direction together with the push rod and the inner cylinder. As a result, the inner cylinder moves relative to the outer cylinder, the support member extends, and the back door moves to the open position. At this time, the back door can be stopped at an arbitrary position by the load balance such as the urging force of the coil spring, the urging force of the gas spring, the reduction gear mechanism, and the sliding resistance of the electric motor. Therefore, the back door is held in the open position. When the back door in the open position is closed, the electric motor reverses in response to the closing operation and the spindle also rotates in the reverse direction, so that the spindle nut moves in the opposite direction together with the guide tube and the inner cylinder. As a result, the inner cylinder moves (pulls in) relative to the outer cylinder against the urging force of the coil spring, the support member contracts, and the door is driven to the closed position.

Japanese Unexamined Patent Publication No. 2014-101637

In the conventional support member of this type, an electric motor that requires a waterproof structure to prevent electric leakage and a spindle, coil spring, or the like that does not require high waterproofness are incorporated together. In this structure, all parts must be assembled in a consistent production process. Therefore, the conventional support member of this type is not easy to control the production process and has poor productivity.

Further, since the opening / closing angle of the door, the mounting point, and the like are different for each vehicle model, when it is necessary to set a support member having a different length for each vehicle model, it is necessary to change the structure of the entire support member. This leads to an increase in the cost of the support member.

The present invention has been made in view of the above problems, and an object of the present invention is to increase the productivity of a support member for a vehicle door opening / closing device. Another object of the present invention is to provide a vehicle door opening / closing device capable of flexibly adapting the support member to each vehicle type without changing the entire support member.

One aspect of the present invention includes a support member that is interposed between the body of the vehicle and the door and is expandable and contractible so that the door can be held in the open position, and the support member comprises an electric motor drive mechanism. A first housing unit to be provided and a second housing unit coupled and integrated with the first housing unit are provided, and the second housing unit is concentrically arranged in the outer cylinder and the outer cylinder, and the outer cylinder is provided. An inner cylinder that is movably fitted to the cylinder, a spindle connected to the electric motor drive mechanism, and a spindle that moves the inner cylinder relative to the outer cylinder in the axial direction by rotation of the spindle. The electric motor drive mechanism includes an electric motor and a reduction gear mechanism for decelerating the rotation of the electric motor, and the first housing unit accommodates the electric motor and the reduction gear mechanism. The housing of the first housing unit includes a housing, the first housing unit has a partition wall formed with a through hole at the tip thereof, and the reduction gear mechanism is arranged adjacent to the partition wall and is aligned with the through hole. The spindle is provided with a base end portion which is a second connection portion that can be fitted into the fitting hole, and the base end portion is provided in the through hole. Vehicle door opening / closing device that is inserted and fitted into the fitting hole.

One of the first housing unit and the second housing unit may have a male screw portion, and the other may have a female screw portion to be screwed into the male screw portion.

A waterproof member interposed at the joint between the first housing unit and the second housing unit may be further provided.

Before Stories second housing unit includes a push rod which is fixed to a spindle nut that is screwed to the spindle, accommodating the spindle nut and the push rod, and, can move the push rod in the axial direction together with the spindle nut The guide tube that guides the guide tube, the compressed coil spring that is concentrically arranged on the outer periphery of the guide tube, and the push rod are axially connected and are arranged concentrically on the outer periphery of the guide tube. An inner cylinder whose inner peripheral end surface is axially urged by the coil spring and an outer cylinder that accommodates the inner cylinder so as to be movable back and forth may be provided.

The second housing unit may include a guide housing pipe in which the outer cylinder and the guide pipe are integrated.

The guide housing tube may include a stepped convex portion having a male threaded portion at a base end, and the stepped convex portion may include a bearing accommodating portion in which a bearing supporting the spindle is accommodated. In this case, the housing of the first housing unit may include a bearing holding portion that axially engages with the bearing housed in the bearing accommodating portion.

According to the present invention, the first housing unit is provided with an electric motor drive mechanism (electric motor and reduction gear mechanism) that is required to have high waterproofness. Further, the second housing unit is provided with a spindle, a coil spring, a spindle drive mechanism (spindle nut, push rod, guide cylinder), etc., which are not required to have high waterproofness. The first housing unit and the second housing unit having such a configuration are coupled and integrated to form a support member. Therefore, the electric motor drive mechanism that requires an electrical check and the spindle or spindle drive mechanism that requires a mechanical check can be produced separately, and the productivity and quality of the support member can be improved.

Further, since the first housing unit provided with the electric motor drive mechanism can be shared and the second housing unit provided with the spindle and the spindle drive mechanism can be set for each vehicle model, the overall configuration of the support member is not changed. The support member can be flexibly adapted to different vehicle types.

It is a front view of the support member provided in the vehicle door opening / closing device which concerns on 1st Embodiment of this invention. FIG. 2 is a cross-sectional view taken along the line II-II of FIG. It is an exploded sectional view of the support member provided in the vehicle door opening / closing device which concerns on 1st Embodiment of this invention. It is the same cross-sectional view as FIG. 2 of the support member provided in the vehicle door opening / closing device which concerns on 2nd Embodiment of this invention. FIG. 5 is an exploded cross-sectional view similar to FIG. 3 of a support member provided in the vehicle door opening / closing device according to the second embodiment of the present invention. It is an enlarged view of the partial VI of FIG. It is an enlarged view of the part VII of FIG. It is an exploded sectional view of a guide housing tube and a push rod.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

(First Embodiment)
FIG. 1 is a front view of a support member provided in the vehicle door opening / closing device 100 according to the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is an exploded sectional view of the support member.

The vehicle door opening / closing device 100 according to the present invention includes a stretchable support member 1 interposed between a body (not shown) of the vehicle and the door, and a controller 10. The door is closed by the expansion and contraction of the support member 1, and the door is held in the open position by keeping the support member 1 in the extended state. As shown in FIGS. 1 and 2, the support member 1 has a structure divided into two in the axial direction. That is, the support member 1 includes a first housing unit 2 and a second housing unit 3 that are coupled and integrated with each other.

As shown in FIGS. 2 and 3, the first housing unit 2 includes a cylindrical housing 4. Elements such as an electric motor drive mechanism 7 and a printed circuit board 8 are housed in the housing 4. The electric motor drive mechanism 7 is composed of an electric motor 5 as a drive source and a reduction gear mechanism 6 for decelerating the rotation of the electric motor 5. A Hall IC (not shown) that counts the number of rotations of the electric motor 5 is mounted on the printed circuit board 8. The electric motor 5 and the Hall IC mounted on the printed circuit board 8 are electrically connected to the controller 10 via a plurality of cords 9 shown in FIG. Power is supplied from the controller 10 to the electric motor 5 and the Hall IC via the code 9, and the detection signal output from the Hall IC is transmitted to the controller 10.

The reduction gear mechanism 6 is composed of planetary gears. The input shaft 6a of the reduction gear mechanism 6 is connected to one end of the output shaft (motor shaft) 5a of the electric motor 5 by a coupling 11. The output portion (carrier) of the reduction gear mechanism 6 is formed with a first connecting portion 12 having a fitting hole having a rectangular cross section and having a rectangular end portion of a spindle 20 described later fitting into the fitting hole.

A female screw portion 4a is formed on the inner circumference of one end in the axial direction (left end in FIGS. 2 and 3) of the housing 4, and is located on the back side (right side in FIGS. 2 and 3) of the female screw portion 4a. The partition wall 4A is integrally formed in. A circular hole 4b is formed in the center of the partition wall 4A, and in order to prevent moisture from entering the housing 4 of the first housing unit 2 on the outer surface (bonding surface with the second housing unit 3) of the partition wall 4A. A ring-shaped waterproof member (waterproof seal) 13 is attached.

The other end in the axial direction of the housing 4 (the right end in FIGS. 2 and 3) is closed by a cap-shaped shaft end member 14. The shaft end member 14 is connected to a body (not shown) of the vehicle via a ball joint 15.

The second housing unit 3 includes an outer cylinder 17, an inner cylinder 16, a push rod 18, a guide tube 19, a spindle 20, a spindle nut 27, and a coil spring (compression spring) 28. The outer cylinder 17 has a cylindrical shape. The inner cylinder 16 has a cylindrical shape, is arranged concentrically in the outer cylinder 17, and is fitted to the outer cylinder 17 so as to be movable in the axial direction. The guide tube 19 has a cylindrical shape and is concentrically arranged in the inner cylinder 16. The push rod 18 has a cylindrical shape and is arranged in the guide tube 19. The push rod 18 includes a spindle nut 27 at an axial end (right end in FIGS. 2 and 3). The spindle nut 27 is fitted to the guide tube 19 so as to be axially guided and movable around the inner circumference of the guide tube 19. The spindle 20 is arranged axially through the spindle nut 27 at the center of the push rod 18. The guide pipe 19 is fitted to the outer periphery of the push rod 18 via a resin bush 21 fitted to the inner circumference of the tip portions (left end portions of FIGS. 2 and 3). As a result, the push rods 18 are arranged concentrically with the guide pipe 19.

One end in the axial direction of the outer cylinder 17 (the left end in FIGS. 2 and 3) is open, and the inner cylinder 16 is inserted through this opening and is accommodated in the inner circumference of the outer cylinder 17 so as to be movable back and forth. Further, a step convex portion 17A is integrally formed at the other end of the outer cylinder 17 in the axial direction (the right end in FIGS. 2 and 3). In other words, the other end of the outer cylinder 17 in the axial direction is not opened and is closed by the stepped convex portion 17A. On the outer circumference of the stepped convex portion 17A, a male screw portion 17a that can be screwed into the female screw portion 4a formed on the inner circumference of one end of the housing 4 of the first housing unit 2 in the axial direction is formed. A circular hole 17b through which the spindle 20 penetrates is formed at the center of the stepped convex portion 17A of the outer cylinder 17.

A shaft end member 22 is fastened to the inner circumference of one end in the axial direction (left end in FIGS. 2 and 3) of the push rod 18 by caulking, and the shaft end member 22 is connected to the inner circumference of the push rod 18 via a ball joint 23 of the vehicle. It is connected to a door (not shown).

Screws are spirally engraved on the outer circumference of the spindle 20, and the base end portion (right end portion in FIGS. 2 and 3) of the spindle 20 is integrally connected by caulking and fixing the retaining ring 29. It is rotatably supported by a bearing 25. In the present embodiment, the bearing 25 is held by the bearing retainer 24 at the end portion (inside the stepped convex portion 17A) in the outer cylinder 17. The bearing retainer 24 is fixed to the outer cylinder 17 by welding or the like. The tip of the spindle 20 is rotatably supported by a push rod 18 via a resin bush 26 fitted to the outer periphery of the spindle 20. Here, the base end portion of the spindle 20 that penetrates the circular hole 17b of the stepped convex portion 17A and projects to the outside of the outer cylinder 17 (the right end portion in FIG. 2) has a rectangular outer circumference formed in a flat shape. It constitutes the second connection portion 20a. The second connection portion 20a rotates with respect to the first connection portion 12 provided in the first housing unit 2 when the first housing unit 2 and the second housing unit 3 are coupled and integrated as described later. Is fitted in such a manner that is transmitted.

A spindle nut 27 housed inside the guide tube 19 is screwed through the spindle 20 so as to be movable in the axial direction. The spindle nut 27 is fixed to the axial end of the push rod 18 (the right end of FIGS. 2 and 3). The spindle nut 27, the push rod 18, and the guide tube 19 constitute a spindle drive mechanism that moves the inner cylinder 16 relative to the outer cylinder 17 in the axial direction by the rotation of the spindle 20 as described later.

The coil spring 28 is arranged concentrically with respect to the outer circumference of the guide pipe 19 on the inner peripheral side of the inner cylinder 16 and on the outer peripheral side of the guide pipe 19 in the radial direction. The guide tube 19 is arranged concentrically between the push rod 18 and the coil spring 28 in the radial direction. The coil spring 28 is reduced in the axial direction between one end of the inner cylinder 16 on which the shaft end member 22 is arranged and the other end of the outer cylinder 17 (to be exact, the bearing retainer 24). There is. When the axial end of the coil spring 28 abuts on one end of the inner cylinder 16 (leftward in FIGS. 2 and 3), the inner cylinder 16 extends in a direction extending with respect to the outer cylinder 17 (FIGS. 2 and 3). It is elastically urged to the left). Therefore, the inner cylinder 16 is pressed against the shaft end member 22 by the urging force of the coil spring 28, and the inner cylinder 16 is axially connected to the push rod 18 by this pressure contact. The other end of the coil spring 28 in the axial direction is supported by a bearing retainer 24.

By connecting and integrating the first housing unit 2 and the second housing unit 3 configured as described above in the axial direction, the support member 1 shown in FIGS. 1 and 2 is assembled.

That is, as shown in FIG. 3, a rectangular shape formed at one end in the axial direction protruding from the outer cylinder of the spindle 20 of the second housing unit 3 from the state where the first housing unit 2 and the second housing unit 3 are separated. The second connection portion 20a of the above is fitted into the first connection portion 12 which is a rectangular fitting hole of the first housing unit 2. Further, for example, the first housing unit 2 is rotated with respect to the second housing unit 3, and the male screw portion 17a formed on the stepped convex portion 17A at one end in the axial direction of the outer cylinder 17 of the second housing unit 3 is first. It is screwed into the female screw portion 4a formed on the inner circumference of one end of the housing 4 of the housing unit 2 in the axial direction. As a result, the first connection portion 12 of the first housing unit 2 and the second connection portion 20a of the second housing unit 3 are connected, and the spindle 20 of the second housing unit 3 and the electric motor drive mechanism of the first housing unit 2 are connected. 7 is connected. Further, the first housing unit 2 and the second housing unit 3 are coupled and integrated in the axial direction to assemble the support member 1 shown in FIGS. 1 and 2.

As described above, the waterproof member 13 is interposed at the joint portion between the first housing unit 2 and the second housing unit 3 in which the first housing unit 2 and the second housing unit 3 are coupled and integrated. Due to the sealing effect of the waterproof member 13, high waterproofness is ensured at the joint portion between the first housing unit 2 and the second housing unit 3. Therefore, it is possible to prevent water from entering the first housing unit 2 that requires waterproofness from the joint portion. Since the second housing unit 3 does not require waterproofness, by forming the housing into a split structure, it is possible to have a structure having high waterproofness only on the first housing unit 2 side.

By connecting the spindle 20 of the second housing unit 3 and the electric motor drive mechanism 7 of the first housing unit 2, the rotation of the output shaft 5a of the electric motor 5 is decelerated by the reduction gear mechanism 6 and transmitted to the spindle 20. Will be done.

The support member 1 formed by coupling and integrating the first housing unit 2 and the second housing unit 3 has one end in the axial direction on the first housing unit 2 side fixed to the vehicle via the shaft end member 14 and the ball joint 15. It is connected to the body on the side, and the other end in the axial direction on the side of the second housing unit 3 is connected to the door on the movable side of the vehicle via the shaft end member 22 and the ball joint 23.

Next, the operation of the vehicle door opening / closing device 100 including the support member 1 configured as described above will be described.

When the vehicle door is closed, the support member 1 is in the most compressed state shown in FIGS. 1 and 2, and the spindle nut 27 is located near the base end portion (right end portion in FIG. 2) of the spindle 20. ing. From this state, for example, when an operation switch provided on the door is operated to open the door, the controller 10 (see FIG. 1) that detects this starts supplying power to the electric motor 5 of the first housing unit 2. Then, the electric motor 5 is started, and the rotation of the output shaft 5a is decelerated via the reduction gear mechanism 6 and transmitted to the spindle 20 of the second housing unit 3, so that the spindle 20 is rotationally driven at a predetermined speed. Will be done.

When the spindle 20 is rotationally driven as described above, the spindle nut 27 screwed into the spindle 20 moves to the left in FIG. Further, the push rod 18 moves to the left in FIG. 2 together with the spindle nut 27, and the inner cylinder 16 moves in the same direction by the urging force of the coil spring 28 following the movement. As a result, the inner cylinder 16 and the push rod 18 are pushed out from the inside of the outer cylinder 17 on the fixed side, and the support member 1 extends. Therefore, the door connected to one end in the axial direction of the support member 1 is driven to the open position via the ball joint 23 connected to the shaft end member 22 connected to the guide pipe 18. At this time, since the door is driven to the open position by the urging force of the coil spring 28 and the driving force of the electric motor 5, the weight load of the door is reduced by the urging force of the coil spring 28, and the load is less likely to be applied to the electric motor 5. Therefore, the electric motor drive mechanism 7 can be miniaturized. In the present embodiment, the movement of the spindle nut 27 to the left is restricted by abutting on the resin bush 26. In other words, the resin bush 26 in the present embodiment also functions as a stopper for the leftward movement of the spindle nut.

When, for example, an operation switch provided inside the door is operated to drive the door in the open position to the closed position, the controller 10 that detects this drives the electric motor 5 in the reverse direction, and the spindle 20 rotates. By this rotation, the spindle nut 20 screwed into the spindle 20 moves in the guide tube 19 in the opposite direction (to the right in FIG. 2) together with the push rod 18. Therefore, the inner cylinder 16 moves relative to the outer cylinder 17 against the urging force of the coil spring 28, is pulled into the outer cylinder 17, and the support member 1 contracts, so that the door closes. Move to.

As described above, in the present embodiment, the first housing unit 2 is provided with the electric motor drive mechanism 7 (the electric motor 5 and the reduction gear mechanism 6), which are required to have high waterproofness. On the other hand, the second housing unit 3 is provided with a spindle 20, a coil spring 28, a spindle drive mechanism (spindle nut 27, push rod 18, guide tube 19), etc., which are not required to have high waterproofness. The support member 1 is configured by connecting and integrating the first housing unit 2 and the second housing unit 3. Therefore, the electric motor drive mechanism 7 that requires electrical inspection and the spindle 20 and spindle drive mechanism (spindle nut 27, push rod 18, guide tube 19) that require mechanical inspection should be produced separately. This makes it possible to improve the productivity and quality of the support member 1.

Further, in the support member 1 according to the present embodiment, the first housing unit 2 provided with the electric motor drive mechanism 7 is shared among different vehicle models, and the spindle 20 and the spindle drive mechanism (spindle nut 27, push rod 18, guide pipe) are shared. The second housing unit 3 provided with 19) can be set for each vehicle type. Therefore, there is also an effect that the support member 1 can be flexibly adapted to different vehicle types without changing the overall configuration of the support member 1.

(Second Embodiment)
4 to 8 show the support member 1 according to the second embodiment of the present invention. In these drawings, the same or similar elements as those in the first embodiment are designated by the same reference numerals. Further, in these drawings, the illustration of elements such as the ball joints 15 and 23 and the printed circuit board 8 is omitted. Regarding the present embodiment, the configurations and operations not particularly mentioned in the following description are the same as those of the first embodiment.

As most clearly shown in FIG. 8, the second housing unit 3 includes a guide housing pipe 30 in which the outer cylinder 17 and the guide pipe 19 are integrated. In this embodiment, the guide housing tube 30 is made of resin.

The guide housing pipe 30 is provided with a stepped convex portion 30A at a base end portion (right end portion in FIGS. 4, 5 and 8). The outer cylinder 17 and the base end portion of the guide pipe 19 are integrated with the stepped convex portion 30A. On the outer circumference of the stepped convex portion 30A, a male screw portion 30a that can be screwed into the female screw portion 4a formed on the inner circumference of one end of the housing 4 of the first housing unit 2 in the axial direction is formed. In the figure of the stepped convex portion 30A, a bearing accommodating portion 30b, which is a relatively shallow circular recess, is provided on the right end surface. The stepped convex portion 30A closes the base end portion of the outer cylinder 17. The stepped convex portion 30A is formed with a circular hole 30c that communicates the bearing accommodating portion 30b with the inside of the guide cylinder 19. The diameter of the circular hole 30c is the same as the inner diameter of the guide cylinder 19, and is smaller than the diameter of the bearing accommodating portion 30b.

Referring to FIG. 6, the bearing 25 is accommodated in the bearing accommodating portion 30b. The housing 4 of the first housing unit 2 includes a bearing holding portion 4c that axially engages with the bearing 25 housed in the bearing accommodating portion 30b. Also referring to FIG. 5, in the present embodiment, the bearing holding portion 4c protrudes outward from the partition wall 4A and has a short cylindrical shape. The bearing 25 is held in the bearing accommodating portion 30b by being sandwiched between the bottom wall of the bearing accommodating portion 30b and the tip of the bearing holding portion 4c. The base end portion (right end portion in FIGS. 2 and 3) of the spindle 20 is rotatably supported by a bearing 25 integrally connected by caulking and fixing the retaining ring 29. A waterproof member 13 for preventing the ingress of moisture into the housing 4 of the first housing unit 2 is interposed between the tip of the stepped convex portion 30A and the partition wall 4A. With such a bearing structure of the bearing 25, a bearing retainer (see, for example, reference numeral 24 in FIGS. 2 and 3) is not required. By eliminating the bearing retainer, the number of parts can be reduced. In addition, assembling is simplified in that the bearing retainer does not need to be fixed (welded).

As conceptually shown in FIG. 8, the assembly in which the push rod 18, the spindle nut 27, and the bearing 25 are assembled to the spindle 20 is inserted into the guide pipe 19 from the stepped convex portion 30A through the circular hole 30c. , Can be assembled to the guide housing tube 30. In other words, the assembly including the spindle 20, the push rod 18, the spindle nut 27, and the bearing 25 is assembled to the guide housing tube 30 from the proximal end side, that is, the second housing unit 3 and the first housing, not from the distal end side. It can be done from the side connected to the unit 2. This simplifies the assembly.

As most clearly shown in FIG. 8, the guide tube 19 includes an annular guide portion 19a that projects inward from the inner wall surface at a position relatively close to the tip end. With reference to FIG. 7, the push rod 18 is slidably fitted to the guide portion 19a. That is, the push rod 18 is slidably guided by the guide portion 19a of the guide tube 19. Further, the movement of the spindle nut 27 to the left is restricted by abutting on the guide portion 19a. In other words, the guide portion 19a in the present embodiment also functions as a stopper for the leftward movement of the spindle nut 27. As described above, in the first embodiment, the resin bush 26 functions as a stopper for the movement of the spindle nut 27. On the other hand, in the present embodiment, since the guide portion 19a provided on the guide pipe 19 functions as a stopper for the movement of the spindle nut 27, it is attached to the axially fixed (welded) portion between the spindle 20 and the bearing 25. The acting load can be reduced.

The guide pipe 19 and the stepped convex portion 30A provided with the bearing accommodating portion 30b are not separate parts from each other, but are a single part, that is, a part of the guide housing pipe 30. Therefore, the bearing 25 accommodated in the bearing accommodating portion 30b and the guide pipe 19 can be precisely aligned. By precisely aligning the bearing 25 and the guide tube 19, the spindle 20 can be precisely aligned with both the bearing 25 and the guide tube 19. As a result, smooth rotation of the spindle 20 can be guaranteed. In other words, by eliminating the misalignment between the bearing 25 and the guide tube 19, it is possible to prevent the misalignment of the rotating shaft of the spindle 20.

In the above embodiment, the end portion of the support member 1 on the first housing unit 2 side is connected to the vehicle body, and the end portion on the second housing unit 3 side is connected to the vehicle door. On the contrary, a configuration may be adopted in which the end portion of the support member 1 on the first housing unit 2 side is connected to the door of the vehicle and the end portion on the second housing unit 3 side is connected to the body of the vehicle. Further, in the above embodiment, the support member 1 is configured by connecting and integrating the first housing unit 2 and the second housing unit 3 by screw coupling, but the first housing unit 2 and the second housing unit 3 are formed. And may be combined and integrated by other means such as laser welding.

1 Support member 2 1st housing unit 3 2nd housing unit 4 Housing of 1st housing unit 4A Partition of housing 4a Female thread of housing 4b Circular hole of partition 4c Bearing holder 5 Electric motor 5a Output shaft of electric motor 6 Deceleration Gear mechanism 6a Input shaft of reduction gear mechanism 7 Electric motor drive mechanism 8 Printed board 9 Code 10 Controller 11 Coupling 12 1st connection part 13 Waterproof member 14 Shaft end member 15 Ball joint 16 Inner cylinder 17 Outer cylinder 17A Outer cylinder stage Convex 17a Male threaded part of outer cylinder 17b Circular hole of step convex 18 Push rod 19 Guide pipe 19a Guide 20 Spindle 20a Second connection 21 Resin bush 22 Shaft end member 23 Ball joint 24 Bearing retainer 25 Bearing 26 Resin bush 27 Spindle nut 28 Coil spring 29 Retaining ring 30 Guide housing pipe 30A Step convex part 30a Male thread part 30b Bearing housing part 30c Circular hole

Claims (7)

It is provided with a support member that is interposed between the body of the vehicle and the door and that can be expanded and contracted so that the door can be held in the open position.
The support member
The first housing unit equipped with an electric motor drive mechanism and
A second housing unit that is coupled and integrated with the first housing unit is provided.
The second housing unit is
With the outer cylinder
An inner cylinder that is concentrically arranged in the outer cylinder and is movably fitted to the outer cylinder.
The spindle connected to the electric motor drive mechanism and
It is provided with a spindle drive mechanism that moves the inner cylinder relative to the outer cylinder in the axial direction by the rotation of the spindle.
The electric motor drive mechanism includes an electric motor and a reduction gear mechanism for decelerating the rotation of the electric motor.
The first housing unit includes a housing for accommodating the electric motor and the reduction gear mechanism.
The housing of the first housing unit is provided with a partition wall having a through hole at the tip thereof.
The reduction gear mechanism includes an output portion which is arranged adjacent to the partition wall and has a first connection portion which is a fitting hole aligned with the through hole.
The spindle includes a base end portion that is a second connection portion that can be fitted into the fitting hole.
A vehicle door opening / closing device in which the base end portion is inserted through the through hole and fitted into the fitting hole. The vehicle door opening / closing device according to claim 1, wherein one of the first housing unit and the second housing unit has a male screw portion and the other has a female screw portion screwed into the male screw portion. The vehicle door opening / closing device according to claim 1 or 2, further comprising a waterproof member interposed at a joint portion between the first housing unit and the second housing unit. The second housing unit is
A push rod fixed to a spindle nut screwed into the spindle,
A guide tube that accommodates the push rod and the spindle nut and guides the push rod together with the spindle nut so as to be movable in the axial direction.
A contracted coil spring arranged concentrically on the outer circumference of the guide tube is provided.
The inner cylinder is axially connected to the push rod and is arranged concentrically on the outer periphery of the guide pipe, and its inner peripheral end surface is axially urged by the coil spring.
The vehicle door opening / closing device according to claim 1, wherein the outer cylinder accommodates the inner cylinder so as to be movable back and forth. The vehicle door opening / closing device according to claim 4, wherein the second housing unit includes a guide housing pipe in which the outer cylinder and the guide pipe are integrated. The guide housing tube is provided with a stepped convex portion having a male threaded portion at the base end.
The stepped protrusion is provided with a bearing housing part Bearings are accommodated, the vehicle door lock device according to claim 5. The vehicle door opening / closing device according to claim 6, wherein the housing of the first housing unit includes a bearing holding portion that axially engages with the bearing housed in the bearing accommodating portion.

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