JP6930221B2 - Vehicle door switchgear - Google Patents

Description

The present invention relates to a vehicle door opening / closing device interposed between a vehicle body and a door.

Patent Document 1 discloses a vehicle door opening / closing device that is tubular and has one end connected to a vehicle body and the other end connected to a door, and opens and closes the door by expanding and contracting with a built-in actuator. ing.

Such a vehicle door opening / closing device is configured as shown in FIG. 2, for example. The vehicle door opening / closing device is composed of a cylinder 20, one end of which is provided with a joint member 31 that fits with a ball stud provided on the vehicle door, and the other end of which is provided on the vehicle body. A joint member 41 that fits with the ball stud is provided. The joint member 31 has a base portion 32 inserted into the tubular body 20 and a socket portion 34 fitted with the ball stud. The socket portion 34 is connected to the base portion 32 by a shaft portion 33 protruding outward from the base portion 32. Further, as shown in FIG. 4, such a vehicle door opening / closing device includes a motor 23 constituting an actuator. The wiring 23b of the motor 23 is pulled out from the inside of the tubular body 20 in a state of being covered with the harness tube 51. The wiring 23b is inserted through the opening 52a of the harness tube 51. Further, the base portion 32 of the joint member 31 is provided with a recess 35, and the harness tube 51 is inserted through the recess 35.

Japanese Unexamined Patent Publication No. 2016-216973

In a vehicle door opening / closing device as in Patent Document 1, the depth of the recess in the joint member is limited by the thickness of the shaft portion. That is, since the shaft portion protrudes from the base portion, the recess cannot be formed so as to be deeper in the central axis direction than the outer peripheral surface of the shaft portion.

By the way, the harness tube also serves as a seal for the recess. Therefore, the tube is arranged so as to abut on the inner wall of the recess. That is, when the depth of the recess is limited and the recess becomes narrow as described above, the tube may become thin. When the tube is thin, there is a problem that the opening for inserting the wiring of the motor is small and the workability is not good when the tip of the wiring is inserted into the opening of the tube.

An object of the present invention is to provide a vehicle door opening / closing device in which wiring can be easily inserted into a harness tube.

A vehicle door opening / closing device for solving the above problems includes a cylinder composed of an inner cylinder and an outer cylinder accommodating one end of the inner cylinder, and one end of the cylinder is connected to the body and the other end is connected to the door. The door is expanded and contracted by the inner cylinder and the outer cylinder moving relative to each other in the direction of the central axis of the cylinder by using a motor provided inside the cylinder as a drive source. Is a vehicle door opening / closing device that can be opened / closed, and is fitted into a base portion inserted into the end of the cylinder and a ball stud protruding from the cylinder and provided in the vehicle. A joint member having a socket portion to be combined, a shaft portion connecting the base portion and the socket portion, and a harness tube covering the wiring of the motor are provided, and the base portion includes the said base portion. A recess is formed from the outer peripheral surface to the central shaft side from the socket portion side to the motor side, the harness tube is pulled out from the cylinder through the recess, and the recess is formed. The cross-sectional area on the motor side is larger than the cross-sectional area on the socket portion side, and the cross-sectional area of the recess is gradually increasing from the socket portion side toward the motor side. The summary is.

In the above configuration, the cross-sectional area on the motor side of the recess into which the harness tube is inserted is larger than the cross-sectional area on the socket portion side. As a result, a harness tube having a large opening on the motor side into which the wiring of the motor is inserted can be adopted as compared with the case where the cross-sectional area of the recess is constant in the central axis direction of the cylinder. That is, the tip of the wiring can be easily inserted through the opening of the harness tube.

By the way, if the cross-sectional area of the recess is changed stepwise, such as when a step is formed on the inner wall of the recess, the shape of the harness tube inserted into the recess also follows the shape of the recess. It becomes a thing. In this case, a step may be formed on the inner wall of the harness tube, and the tip of the inserted wiring may be easily caught by the step, making it difficult to insert the wiring of the motor into the harness tube.

In this respect, according to the above configuration in which the cross-sectional area of the recess is gradually changed, the shape of the harness tube is suppressed from being distorted, and it becomes easy to insert the wiring into the harness tube.
In an example of the vehicle door opening / closing device, the recess is a notch having both side surfaces extending in parallel with each other and a bottom surface connecting the both side surfaces, and the bottom surface is closer to the central axis toward the motor side. As described above, it is inclined with respect to the extending direction of the central axis.

The recess can be formed, for example, by cutting. According to the above configuration, the recess can be formed by moving a cutting tool having a size corresponding to the width of the recess while gradually changing the distance from the central axis of the cylinder to perform cutting. ..

In the example of the vehicle door opening / closing device, the bottom surface of the socket portion is inclined at an angle at which neither straight line passing through the two points on the bottom surface of the recess portion can intersect with the socket portion.

If the bottom surface is inclined as in the above configuration, for example, even when the concave portion is formed by cutting as described above, since there is no socket portion on the extension line of the movement locus of the cutting tool during processing, processing is performed. At this time, a recess can be formed without causing the cutting tool to interfere with the socket portion.

In the vehicle door opening / closing device, the joint member may be one in which the base portion and the socket portion are integrally molded.
In particular, as described above, in the case of a vehicle door opening / closing device in which the bottom surface of the recess is inclined at an angle at which neither straight line passing through the two points on the bottom surface can intersect the socket portion, the base portion and the socket portion Even if the two are integrally molded, it is possible to prevent the cutting tool from interfering with the socket portion when forming the concave portion in the joint member.

According to the present invention, it is possible to easily insert the wiring into the harness tube.

The schematic diagram which shows the relationship between the door opening / closing device for a vehicle of one Embodiment, and a vehicle. The perspective view of the door opening / closing device for a vehicle which concerns on this embodiment. Sectional drawing of the door opening and closing device for a vehicle. An exploded perspective view of a vehicle door opening / closing device according to the same embodiment. FIG. 5 is a cross-sectional view showing the periphery of a joint member of the vehicle door opening / closing device according to the same embodiment. FIG. 3 is a cross-sectional view of a joint member of a vehicle door opening / closing device according to the same embodiment. The front view of the joint member of the door opening / closing device for a vehicle which concerns on the same embodiment. FIG. 3 is a cross-sectional view of a joint member in a modified example of a vehicle door opening / closing device. Top view of the joint member in another modified example of the vehicle door opening / closing device.

Hereinafter, an embodiment of the vehicle door opening / closing device will be described.
FIG. 1 shows the rear part of the vehicle 91 equipped with the vehicle door opening / closing device 10. A door opening 92 formed at the rear of the vehicle 91 is provided with a so-called flip-up back door 93 that opens and closes with a fulcrum P0 set at the upper end thereof as a rotation center. One vehicle door opening / closing device is provided at both ends of the door opening 92 in the width direction. The vehicle door opening / closing device is interposed between the back door 93 and the body 94. In the following, of the two vehicle door opening / closing devices arranged at both ends of the door opening 92 in the width direction, one of the vehicle door opening / closing devices 10 arranged on the left side of the vehicle 91 will be described. explain. Although the description of the other vehicle door opening / closing device arranged on the right side of the vehicle 91 is omitted, each vehicle door opening / closing device has a common structure.

The vehicle door opening / closing device 10 includes a tubular body 20 including an inner cylinder 21 and an outer cylinder 22 accommodating one end of the inner cylinder 21. One end of the tubular body 20 is connected to the body 94 and the other end is connected to the back door 93. In the vehicle door opening / closing device 10, the inner cylinder 21 and the outer cylinder 22 move relative to each other in the central axis direction of the cylinder 20 by a drive mechanism provided inside the cylinder 20, so that the cylinder 20 expands and contracts. It is configured in.

As shown in FIG. 2, joint members 31 and 41, which are connecting members with the vehicle 91, are provided at both ends of the tubular body 20.
The joint member 31 provided at the end of the inner cylinder 21 includes a base portion 32 inserted into the end of the inner cylinder 21, a socket portion 34 protruding from the inner cylinder 21, and a base portion 32 and a socket portion. It has a shaft portion 33 connecting the 34 and the shaft portion 33.

A joint member 41 is provided at the end of the outer cylinder 22. Like the joint member 31, the joint member 41 also has a base portion, a shaft portion, and a socket portion.
A harness tube 51 extends from the inside of the tubular body 20. The wiring of the drive mechanism arranged inside the cylinder 20 is drawn out from the cylinder 20, and the harness tube 51 covers the wiring.

As shown in FIG. 1, the vehicle door opening / closing device 10 is rotatably connected to the back door 93 and the body 94. Specifically, the socket portion 34 of the joint member 31 is fitted with a ball stud projecting from the back door 93. Further, the socket portion of the joint member 41 is fitted with the ball stud projecting from the body 94. Here, the connection point between the back door 93 and the vehicle door opening / closing device 10 is referred to as a rotation connection point P1, and the connection point between the body 94 and the vehicle door opening / closing device 10 is referred to as a rotation connection point P2. The vehicle door opening / closing device 10 can open / close the back door 93 by expanding / contracting the cylinder 20 while rotating relative to the back door 93 and the rotation connection points P1 and P2 with respect to the body 94. It has become. Further, the vehicle door opening / closing device 10 can maintain the position of the back door 93 by maintaining the length of the tubular body 20.

A drive mechanism A for expanding and contracting the vehicle door opening / closing device 10 will be described with reference to FIG.
Inside the tubular body 20, a cylindrical second guide tube 29 and a first guide tube 28 having a diameter smaller than that of the second guide tube 29 are arranged concentrically. The first guide pipe 28 is fixed in the second guide pipe 29. The second guide pipe 29 is fixed to the joint member 41 which is the end of the outer cylinder 22.

The right end of the first guide pipe 28 in FIG. 3 is open, and a spindle nut 27 is fixed to the open end 28a.
A motor 23, which is a drive source of the drive mechanism A, is housed inside the inner cylinder 21. A screw spindle 25 extending coaxially with the motor shaft 23a is connected to the motor shaft 23a protruding from the motor 23 toward the outer cylinder 22 via a speed reducer 24. The base end of the screw spindle 25 on the motor 23 side is supported by a ball bearing 26. The tip of the screw spindle 25 is inserted into the first guide tube 28. The screw spindle 25 is screwed and fixed to the spindle nut 27 in the first guide pipe 28.

A compression coil spring 30 is provided inside the cylinder 20. The compression coil spring 30 is arranged outside the second guide tube 29 so that the second guide tube 29, the first guide tube 28, and the screw spindle 25 are inserted inside the compression coil spring 30. One end of the compression coil spring 30 is in contact with the joint member 41. The other end of the compression coil spring 30 is in contact with the ball bearing 26. As a result, the compression coil spring 30 urges the inner cylinder 21 and the outer cylinder 22 in a direction in which they are separated from each other in the axial direction.

By driving the motor 23 and rotating the screw spindle 25, the spindle nut 27 screwed into the screw spindle 25 apparently moves axially on the screw spindle 25. As a result, the inner cylinder 21 and the outer cylinder 22 move relative to each other in the axial direction, and the length of the cylinder 20 changes. In this way, the drive mechanism A capable of changing the length of the tubular body 20 using the motor 23 as the drive source is configured.

In FIG. 4, a straight line coaxial with the central axis of the inner cylinder 21 constituting the tubular body 20 is displayed as the central axis C. The central axis C is the central axis of the vehicle door opening / closing device 10. FIG. 4 shows an inner cylinder 21, a speed reducer 24, a motor 23, a harness tube 51, and a joint member 31 in a state where the vehicle door opening / closing device 10 is disassembled along the extending direction of the central axis C. Shown. FIG. 5 shows a cross-sectional structure of the vehicle door opening / closing device 10 along the central axis C.

As shown in FIGS. 4 and 5, the harness tube 51 has a disk-shaped base 52 sandwiched between the motor 23 and the joint member 31, and a cylindrical coating into which the wiring 23b of the motor 23 is inserted. It has a part 53. The covering portion 53 extends in the extending direction of the central axis C from the surface of the base portion 52 on the joint member 31 side. The base portion 52 is formed with an opening 52a that communicates with the inside of the covering portion 53. The harness tube 51 is made of a soft material.

The base portion 32 of the joint member 31 is formed with a recess 35 recessed toward the central axis C side. The recess 35 is formed from the socket portion 34 side to the motor 23 side.
When assembling the vehicle door opening / closing device 10, the wiring 23b of the motor 23 is inserted into the harness tube 51 through the opening 52a shown in FIG.

As shown in FIG. 5, the harness tube 51 is pulled out from the inner cylinder 21 through the recess 35 of the joint member 31 inserted into the inner cylinder 21. Note that in FIG. 5, the wiring 23b is not shown.

As shown in FIGS. 4 and 6, the base portion 32 of the joint member 31 is formed in a cylindrical shape. A cylindrical shaft portion 33 having a diameter smaller than that of the base portion 32 is coaxially projected from the socket side end surface 40 which is the bottom surface of the cylindrical base portion 32. A socket portion 34 is provided at an end portion of the shaft portion 33 opposite to the base portion 32. The socket portion 34 is formed with a hole 34a into which a ball stud is fitted. The base portion 32, the shaft portion 33, and the socket portion 34 are integrally molded.

FIG. 7 shows the joint member 31 seen from the motor side end surface 39 on the side opposite to the socket side end surface 40 of the base portion 32. As shown in FIGS. 6 and 7, the recess 35 has a first side surface 37 and a second side surface 38 parallel to each other, and a bottom surface 36 connecting the first side surface 37 and the second side surface 38. The recess 35 penetrates the base portion 32 from the end surface 39 on the motor side to the end surface 40 on the socket side.

As shown in FIG. 6, the bottom surface 36 of the recess 35 is formed so as to be inclined with respect to the central axis C. FIG. 6 is a two-dot chain line showing a straight line L1 that is parallel to the central axis C and passes through the intersection of the socket side end surface 40 and the bottom surface 36. Further, the straight line L2 is shown by a broken line as an example of a straight line passing through arbitrary two points on the bottom surface 36. The straight line L2 is a straight line that passes through the line of intersection between the socket side end surface 40 and the bottom surface 36 and the line of intersection between the motor side end surface 39 and the bottom surface 36. The straight line L2 is inclined so as to approach the central axis C as the distance from the socket portion 34 increases and the distance from the straight line L1 increases. That is, the bottom surface 36 of the recess 35 is inclined so that the end surface 39 on the motor side is closer to the central axis C than the end surface 40 on the socket side of the base portion 32. Further, the bottom surface 36 of the recess 35 is inclined at an angle at which none of the straight lines passing through any two points on the bottom surface 36 can intersect the socket portion 34, similarly to the straight line L2.

Here, the length from the outer peripheral surface 32a to the bottom surface 36 on the first side surface 37 or the second side surface 38 is defined as the “depth of the recess 35”. In the joint member 31 according to the present embodiment, the recess 35 is formed so that the depth of the recess 35 at the position of the socket side end surface 40 is smaller than the difference between the radius of the base portion 32 and the radius of the shaft portion 33. .. Further, the recess 35 is formed so that the depth of the recess 35 at the position of the end surface 39 on the motor side is equal to the difference between the radius of the base portion 32 and the radius of the shaft portion 33.

Here, the cross-sectional area of the recess 35 along the direction orthogonal to the central axis C is simply referred to as the “cross-sectional area of the recess 35”. Since the first side surface 37 and the second side surface 38 are parallel and the bottom surface 36 is inclined as described above, the cross-sectional area of the recess 35 is larger on the motor side end surface 39 side than on the socket side end surface 40 side. It's getting bigger. More specifically, the cross-sectional area of the recess 35 gradually increases from the socket side end face 40 toward the motor side end face 39. That is, the cross-sectional area of the recess 35 has a minimum value on the socket side end surface 40 and a maximum value on the motor side end surface 39.

The harness tube 51 is in contact with the first side surface 37, the second side surface 38, and the bottom surface 36 of the recess 35.
The joint member 31 is manufactured as follows. First, a molding step is performed for forging a rough material of a joint member 31 that integrally includes a base portion 32, a shaft portion 33, and a socket portion 34. Subsequently, a joint member 31 in which the recess 35 is formed is manufactured by performing a processing step of performing a cutting process for forming the recess 35 in the rough material.

In the processing step, for example, a cutting tool having a width corresponding to the distance between the first side surface 37 and the second side surface 38 is used. The cutting tool is arranged on an axis orthogonal to the central axis C, and while rotating the cutting tool around the axis, the cutting tool is directed from the motor side end surface 39 side to the socket side end surface 40 side along the extending direction of the central axis C. To move. At this time, the cutting tool is moved so as to be gradually separated from the central axis C as the cutting tool approaches the socket side end surface 40 side so that the bottom surface 36 is inclined as described above. Alternatively, the cutting tool is arranged on an axis orthogonal to the central axis C, and while rotating the cutting tool around the axis, the cutting tool is directed from the socket side end surface 40 side to the motor side end surface 39 side along the extending direction of the central axis C. Move the cutting tool. At this time, the cutting tool is moved so that the cutting tool gradually approaches the central axis C as the cutting tool approaches the motor side end surface 39 side so that the bottom surface 36 is inclined as described above. In the processing process for forming the concave portion 35, grinding processing can also be adopted.

Next, the operation of the method for manufacturing the vehicle door opening / closing device 10 and the vehicle door opening / closing device 10 and their effects will be described.
(1) As described above, when the joint member 31 includes a shaft portion 33 that connects the base portion 32 and the socket portion 34, the depth of the recess 35 on the socket portion 34 side is the radius of the base portion 32 and the shaft. There is a circumstance that it cannot be made larger than the difference from the radius of the portion 33. If the depth of the recess 35 is shallow, the opening 52a of the harness tube 51 to be inserted into the recess 35 has to be made smaller.

In this regard, according to the vehicle door opening / closing device 10 in which the bottom surface 36 of the recess 35 is tilted, the tilt angle of the bottom surface 36 with respect to the central axis C is "0" degrees, and the cross-sectional area of the recess 35 is the central axis C. It is possible to adopt the harness tube 51 having a larger opening 52a as compared with the case where it is constant in the stretching direction. This makes it easier to insert the tip of the wiring 23b into the opening 52a.

(2) If a step is formed on the inner wall of the recess 35, the shape of the harness tube 51 inserted into the recess 35 may be distorted according to the shape of the recess 35. In this case, a step may be formed on the inner wall of the harness tube 51, and the tip of the inserted wiring 23b may easily be caught in the step, making it difficult to insert the wiring 23b into the harness tube 51.

In this regard, in the vehicle door opening / closing device 10, the shape of the harness tube 51 inserted into the recess 35 may be distorted due to the inclined bottom surface 36 and the gradual change in the cross-sectional area of the recess 35. It is suppressed and the wiring 23b can be easily inserted into the harness tube 51.

(3) In the vehicle door opening / closing device 10, the bottom surface 36 of the recess 35 is gradually inclined. Therefore, in the cutting process for forming such a recess 35, the central axis C is stretched from the motor side end face 39 side toward the socket side end face 40 side, or from the socket side end face 40 side toward the motor side end face 39 side. The first side surface 37, the second side surface 38, and the bottom surface 36 can be formed by so-called one-pass processing in which the cutting tool is moved in one direction.

(4) When the recess 35 is formed by cutting, if the socket portion 34 is present on the extension line of the movement locus of the cutting tool, the cutting tool may interfere with the socket portion 34. In this regard, as described above, when the recess 35 in which the bottom surface 36 is inclined at an angle at which none of the straight lines passing through any two points on the bottom surface 36 can intersect the socket portion 34 is formed during processing. The socket portion 34 does not exist on the extension line of the movement locus of the cutting tool. That is, the recess 35 of the vehicle door opening / closing device 10 can be formed without causing the cutting tool to interfere with the socket portion 34 during processing.

(5) Since the cutting tool does not interfere with the socket portion 34 during the cutting process for forming the recess 35, a integrally molded structure can be adopted as the joint member 31. That is, the joint member 31 can be manufactured by cutting the rough material of the integrally molded joint member 31.

In addition, the said embodiment can also be carried out in the following embodiment which modified this as appropriate.
The drive mechanism A shown in FIG. 3 is an example of a mechanism for expanding and contracting the cylinder 20 of the vehicle door opening / closing device 10. The joint member 31 in the above embodiment can be applied as long as the harness tube 51 pulled out from the inside of the tubular body 20 passes through the recess 35 of the joint member 31.

-The joint member 131 in which the socket unit 134 and the base unit 132 are combined as shown in FIG. 8 can be adopted instead of the integrally molded joint member 31. The base unit 132 and the socket unit 134 are fixed by pins 141 penetrating each other. A cylindrical cover 142 is provided on the outer periphery of the socket unit 134 to prevent the pin 141 from falling off. The base unit 132 is formed with a recess 135 having an inclined bottom surface. According to such a configuration, the base unit 132 and the socket unit 134 can be combined after the base unit 132 is processed to form the recess 135. In such a configuration, after the base unit 132 and the socket unit 134 are combined, the recess 135 can be formed.

When an integrally molded joint member such as the joint member 31 is adopted, the number of parts can be reduced as compared with the joint member 131, and the step of assembling a plurality of parts can be omitted.

In the recess 35 of the joint member 31 in the above embodiment, the first side surface 37 and the second side surface 38 are parallel to each other. Like the joint member 231 shown in FIG. 9, the first side surface 237 and the second side surface 238 are configured to gradually separate from the central axis C as the distance from the socket portion 234 side increases in the extending direction of the central axis C. The recess 235 can also be adopted. Due to the first side surface 237 and the second side surface 238, the width of the recess 235 in the circumferential direction of the base portion 232 is larger in the width W2 on the motor side end surface 239 side than in the width W1 on the socket side end surface 240 side. .. As described above, depending on the side surface shape of the recess 235, the cross-sectional area of the recess 235 may be larger on the motor side end surface 239 side than on the socket side end surface 240 side. In this case, the bottom surface 236 of the recess 235 may be inclined as in the above embodiment, or a configuration in which the bottom surface 236 is not inclined may be adopted.

The inclination angle of the bottom surface 36 with respect to the central axis C can be appropriately changed as long as the cross-sectional area of the recess 35 on the motor 23 side is larger than that on the socket portion 34 side. If the cross-sectional area of the recess 35 on the motor 23 side is large, the opening 52a is provided as the harness tube 51 to be inserted into the recess 35 as compared with the case where the cross-sectional area of the recess 35 is constant in the extending direction of the central axis C. A large harness tube 51 can be adopted.

In the above embodiment, the motor 23 is arranged on the joint member 31 side in the tubular body 20, and the joint member 31 is a joint member having a recess 35 through which the harness tube 51 passes. The device 10 is shown. On the other hand, when the motor 23 is arranged on the joint member 41 side, it is conceivable to pull out the harness tube 51 from the end portion on the joint member 41 side. In this case, by applying the configuration corresponding to the recess 35 of the joint member 31 to the joint member 41, the same effect as that of the above embodiment can be obtained.

Next, the technical idea that can be grasped from the above embodiment will be described together with the effect.
(A) A cylinder including an inner cylinder and an outer cylinder accommodating one end of the inner cylinder is provided, one end of the cylinder is connected to the body of the vehicle and the other end is connected to the door of the vehicle. The door can be opened and closed by the inner cylinder and the outer cylinder moving relative to each other in the direction of the central axis of the cylinder and expanding and contracting the cylinder by using a motor provided inside the body as a drive source. And
The base portion inserted into the end portion of the tubular body, the socket portion protruding from the tubular body and fitted to the ball stud provided on the vehicle, and the base portion and the socket portion are connected to each other. A shaft portion, a joint member having a shaft portion, and
A harness tube covering the wiring of the motor is provided.
The base portion is formed with a recess recessed from the outer peripheral surface to the central shaft side from the socket portion side to the motor side.
The harness tube is pulled out from the cylinder through the recess and
The recess is a method for manufacturing a vehicle door opening / closing device in which the cross-sectional area on the motor side is larger than the cross-sectional area on the socket portion side.
A processing step of forming the recess in the base portion of the joint member by cutting is included.
In the processing step, by moving the cutting tool from the base portion side to the socket portion side in the extending direction of the central axis, any straight line passing through the two points on the bottom surface of the recess intersects with the socket portion. A method for manufacturing a vehicle door opening / closing device that forms the recess having the bottom surface that is inclined with respect to the extending direction of the central axis at an angle that cannot be obtained.

According to the above manufacturing method, a cutting tool having a size corresponding to the width of the concave portion is moved from the base portion side to the socket portion side while gradually changing the distance from the central axis of the cylinder to perform cutting. , A recess can be formed. Further, since the socket portion is not on the extension line of the movement locus of the cutting tool during processing, the cutting tool does not interfere with the socket portion. If there is a risk that the cutting tool may interfere with the socket part, it becomes difficult to form a recess by cutting, and a joint member is manufactured by assembling the base part and the socket part as separate parts after forming the recess. There is a need. In this regard, if the recess is formed by cutting as described above, a joint member in which the base portion and the socket portion are integrally molded can be adopted.

10 ... Vehicle door opening / closing device, 20 ... Cylinder, 21 ... Inner cylinder, 22 ... Outer cylinder, 23 ... Motor, 23a ... Motor shaft, 23b ... Wiring, 24 ... Reducer, 25 ... Screw spindle, 26 ... Ball bearing , 27 ... Spindle nut, 28 ... First guide tube, 28a ... Open end, 29 ... Second guide tube, 30 ... Compression coil spring, 31 ... Joint member, 32 ... Base part, 32a ... Outer surface, 33 ... Shaft part , 34 ... Socket part, 34a ... Hole, 35 ... Recessed, 36 ... Bottom surface, 37 ... First side surface, 38 ... Second side surface, 39 ... Motor side end face, 40 ... Socket side end face, 41 ... Joint member, 51 ... Harness Tube, 52 ... base, 52a ... opening, 53 ... covering, 91 ... vehicle, 92 ... door opening, 93 ... back door, 94 ... body, A ... drive mechanism.

Claims (4)

A cylinder composed of an inner cylinder and an outer cylinder accommodating one end of the inner cylinder is provided, one end of the cylinder is connected to the body of the vehicle and the other end is connected to the door of the vehicle, and the inside of the cylinder is provided. The door can be opened and closed by the inner cylinder and the outer cylinder moving relative to each other in the central axis direction of the cylinder and expanding and contracting the cylinder by using the motor provided in the vehicle as a drive source. Door opening and closing device
The base portion inserted into the end portion of the tubular body, the socket portion protruding from the tubular body and fitted to the ball stud provided on the vehicle, and the base portion and the socket portion are connected to each other. A shaft portion, a joint member having a shaft portion, and
A harness tube covering the wiring of the motor is provided.
The base portion is formed with a recess recessed from the outer peripheral surface to the central shaft side from the socket portion side to the motor side.
The harness tube is pulled out from the cylinder through the recess and
The recess has a larger cross-sectional area on the motor side than the cross-sectional area on the socket portion side, and also has a larger cross-sectional area .
A vehicle door opening / closing device in which the cross-sectional area of the recess gradually increases from the socket portion side toward the motor side. The recess is a notch having both sides extending parallel to each other and a bottom surface connecting the both sides.
The vehicle door opening / closing device according to claim 1 , wherein the bottom surface is inclined with respect to the extending direction of the central axis so that the bottom surface is closer to the central axis toward the motor side. The vehicle door opening / closing device according to claim 2 , wherein the socket portion has a bottom surface inclined at an angle at which neither straight line passing through two points on the bottom surface of the recess portion can intersect the socket portion. The vehicle door opening / closing device according to any one of claims 1 to 3 , wherein in the joint member, the base portion and the socket portion are integrally molded.

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