JP2023148161A - Vehicle door device - Google Patents

Abstract

To suitably drive a door of a vehicle to open and close.SOLUTION: A vehicle door device 20 has first and second link arms 11, 12 having a first turning connection point X1 for a vehicle 2 and a second turning connection point X2 for a door 5 of the vehicle. The door device 20 has a drive device 71 that drives the door 5 to open and close based on operation of a link mechanism 15 formed of the first and second link arms 11, 12 by using the first link arm 11 as a driving link 80 and turning the driving link 80. The drive device 71 is disposed on the first link arm 11 constituting the driving link 80 and turns integrally with the first link arm 11 by giving a driving torque to the first turning connection point X1.SELECTED DRAWING: Figure 12

Description

The present invention relates to a vehicle door device.

2. Description of the Related Art Conventionally, there is a vehicle door device that includes first and second link arms having a first pivot connection point to the vehicle body and a second pivot connection point to the vehicle door. In such a vehicle door device, a door provided at a door opening of the vehicle door device opens and closes based on the operation of a link mechanism formed by first and second link arms. For example, in Patent Document 1, each of these link arms is stored in a position that is outside a door opening that is attached to the terminal part of the side of the vehicle body and inside a weather strip that is attached to the inside of the door. The configuration is described.

Japanese Patent Application Publication No. 2006-90097

Furthermore, in vehicles, many in-vehicle equipment are becoming more powerful and electrified. For door devices using link mechanisms such as those described above, the optimal design of the drive device, including its arrangement, is also being sought.

A vehicle door device that solves the above problems includes first and second link arms having a first rotational connection point with respect to the vehicle body and a second rotational connection point with respect to the vehicle door; a drive device that uses at least one of the second link arms as a drive link and rotates the drive link to open and close the door based on the operation of a link mechanism formed by the first and second link arms. , the drive device is provided on the drive link and rotates integrally with the drive link by applying a drive torque to at least one of the first and second rotation connection points.

According to the above configuration, there is no need for a space for arranging the drive device on the vehicle body side and the door side. Therefore, when an occupant uses the door opening provided with this door device, the drive device is less likely to interfere with getting on and off the vehicle. Particularly, when the door is opened, the drive device, which rotates together with the drive link, moves in the direction of the door opening operation. That is, the door is separated from the door opening in which it is provided. This makes it even more difficult for the drive device to interfere with the occupant using the door opening, thereby ensuring excellent ease of getting in and out of the vehicle. Therefore, according to the above configuration, the door of the vehicle can be suitably driven to open and close.

In a vehicle door device that solves the above problem, it is preferable that the drive device includes an actuator that generates the drive torque, and a transmission mechanism that transmits the drive torque to a position spaced apart from the actuator.

That is, the proximal position of the drive link near the first rotational connection point with respect to the vehicle body and the distal side position of the drive link near the second rotational connection point with the door are both such that when the door is fully closed, The distance between the vehicle body or door to be connected and the drive link tends to become narrow. For this reason, it is difficult to secure sufficient space for arranging the actuator. In this regard, according to the above configuration, the actuator can be supported at a position on the longitudinal center side of the drive link where it is relatively easy to secure the arrangement space. As a result, this actuator can be arranged integrally with its drive link. As a result, the drive device is less likely to interfere with the occupant using the door opening, making it possible to ensure even better ease of getting in and out of the vehicle.

In the vehicle door device that solves the above problems, the transmission mechanism is a gear train that transmits the drive torque by meshing a plurality of gear members, and the transmission mechanism includes a case fixed to the drive link, and a case fixed to the drive link. a fixed gear provided coaxially with the rotation axis of the drive link, a drive gear meshing with the fixed gear while supported by the case, and a rotation fulcrum of the case coaxial with the rotation axis of the drive link. a bearing member formed therein, the drive link is rotated integrally with the case based on the revolution movement of the drive gear that rotates due to the transmission of the drive torque, and the drive link is rotated integrally with the case, the fixed gear and the It is preferable that the bearing member is provided with a notch portion for arranging the rotation shaft inside.

That is, by using a gear train as the transmission mechanism, a smooth and reliable transmission path of the drive torque can be ensured. Further, according to the above configuration, by inserting the rotation shaft of the drive link into the notch, the transmission mechanism can be easily and correctly assembled to the drive link in a unitized state. As a result, the efficiency of the assembly work can be improved.

In the vehicle door device that solves the above problem, it is preferable that the drive device is supported by the drive link at a position overlapping the drive link when the drive link is viewed from above.

According to the above configuration, the drive device can be arranged integrally with the drive link. As a result, this drive device becomes less likely to interfere with the occupant using the door opening, thereby ensuring even better ease of getting in and out of the vehicle.

It is preferable that the vehicle door device that solves the above problem includes a link cover that covers the drive link together with the drive device, and that the link cover constitutes an armrest when the door is in a fully closed state.

According to the above configuration, an occupant seated on a seat located on the side of the door supported by the link mechanism formed by the first and second link arms can sit on the link cover that functions as an armrest. You can rest your arms and elbows on it. This allows the occupant of this seat to take a relaxed sitting posture.

A vehicle door device that solves the above problem is provided with a variable connection length mechanism that is provided on one of the first and second link arms and that allows the connection length between the first and second rotational connection points to be changed. The opening/closing operation locus of the door changes based on the operation of the variable connection length mechanism, and the other side of the first and second link arms, where the variable connection length mechanism is not provided, is connected to the drive link. It is preferable to do so.

According to the above configuration, the degree of freedom of opening and closing operations can be increased based on the operation of the variable connection length mechanism. Furthermore, by using the link not provided with such a variable connection length mechanism as the drive link, when the drive device opens and closes the door, the door is unlikely to shake due to the operation of the variable connection length mechanism. Accordingly, the door of the vehicle can be opened and closed more suitably.

According to the present invention, it is possible to suitably drive the door of a vehicle to open and close.

It is a perspective view of a door device. It is a perspective view of a door device. FIG. 3 is a plan view of first and second link arms forming a link mechanism. FIG. 3 is a plan view of first and second link arms forming a link mechanism. FIG. 3 is a plan view of first and second link arms forming a link mechanism. FIG. 3 is a plan view of first and second link arms forming a link mechanism. FIG. 3 is a schematic configuration diagram of a door-side engaging portion and a vehicle body-side engaging portion. It is an explanatory view showing arrangement of a door side engagement part and a vehicle body side engagement part. FIG. 3 is a perspective view of a door and a door opening showing the arrangement of a door-side engaging portion and a vehicle body-side engaging portion. It is a top view of the joint link mechanism which comprises a connection length variable mechanism. It is a top view of the joint link mechanism which comprises a connection length variable mechanism. It is a perspective view of the 1st and 2nd link arm which supports a door, and a drive device. It is a perspective view of the 1st and 2nd link arm which supports a door, and a drive device. It is a side view of the drive device provided in the 1st link arm. It is a top view of the drive device provided in the 1st link arm. It is a side view of the drive device provided in the 1st link arm. It is a top view of the drive device provided in the 1st link arm. It is an exploded perspective view of the first link arm and the drive device. FIG. 3 is an exploded perspective view of the transmission mechanism. It is a top view of the gear train which constitutes a transmission mechanism. FIG. 2 is a side view of a gear train that constitutes a transmission mechanism. It is a bottom view of the gear train which constitutes a transmission mechanism. It is an external view of the link cover which covers a 1st link arm and a drive device, and the armrest which this link cover forms.

An embodiment of a vehicle door device will be described below with reference to the drawings.
As shown in FIGS. 1 and 2, the vehicle 1 of this embodiment includes a door opening 3 provided on a side surface 2s of a vehicle body 2. As shown in FIGS. The door opening 3 is provided with a first link arm 11 and a second link arm 12 that support the door 5 of the vehicle 1 in the door opening 3.

Specifically, in the vehicle 1 of this embodiment, these first and second link arms 11 and 12 are connected to a first rotational connection point X1 to the vehicle body 2 and a second rotational connection point to the door 5, respectively. It has a point X2. Specifically, the first link arm 11 is connected to the vehicle body 2 in a state where it is pivotally supported by a support shaft N1a that extends in the vertical direction (the vertical direction in each figure), and also connected to the vehicle body 2 by a support shaft N1b that extends in the vertical direction. It is connected to the door 5 in a state where it is pivotally supported. The second link arm 12 is also connected to the vehicle body 2 in a state of being pivotally supported by a support shaft N2a extending in the vertical direction, and is also connected to the door 5 in a state of being pivotally supported by a support shaft N2b extending in the vertical direction. connected.

That is, as shown in FIGS. 3 to 6, in the vehicle 1 of this embodiment, these first and second link arms 11 and 12 form a link mechanism 15 having a configuration as a four-bar link. . The vehicle 1 of this embodiment is configured such that the door 5 supported by the door opening 3 opens and closes based on the operation of the link mechanism 15.

More specifically, as shown in FIGS. 1 and 2, the vehicle 1 of this embodiment uses these first and second link arms 11 and 12 to move the door 5 toward the rear side of the vehicle (see FIG. It is supported in the door opening 3 (inside, left side, in Fig. 2, right side). In the vehicle 1 of this embodiment, these first and second link arms 11 and 12 are each rotatably connected to the vehicle body 2 near the rear edge 3r of the door opening 3. It has a first rotational connection point X1. In the vehicle 1 of this embodiment, these first and second link arms 11 and 12 are arranged apart from each other in the vertical direction.

In the vehicle 1 of this embodiment, the first link arm 11 is provided above the second link arm 12. Further, the first link arm 11 has a second rotational connection point X2 that is rotatably connected to the door 5 at a substantially central position in the front-rear direction of the door 5 . On the other hand, the second link arm 12 has a second rotational connection point X2 connected to the door 5 near the front end 5f of the door 5. In the vehicle 1 of this embodiment, the door device 20 opens and closes the door 5 based on the operation of the link mechanism 15 formed by the first and second link arms 11 and 12. is formed.

Specifically, as shown in FIGS. 3 to 6, in the door device 20 of this embodiment, when the door 5 is opened, the first and second link arms 11 and 12 are It rotates counterclockwise in each figure around the rotation connection point X1. As a result, the door 5 of the vehicle 1 supported by the first and second link arms 11 and 12 opens toward the rear of the vehicle (to the left in each figure).

Further, in the door device 20 of this embodiment, when the door 5 is closed, the first and second link arms 11 and 12 are rotated around the first rotational connection point X1, as shown in each figure. Rotate in the rotational direction. As a result, the door 5 of the vehicle 1 supported by the first and second link arms 11 and 12 is configured to close toward the front of the vehicle (to the right in each figure).

Furthermore, the door device 20 of this embodiment follows the opening/closing operation locus of the door 5 so as to draw an arcuate locus Rg based on the operation of the link mechanism 15 formed by the first and second link arms 11 and 12. R is defined. That is, as shown in FIG. 5, in the intermediate position where the first and second link arms 11 and 12 extend in the vehicle width direction (vertical direction in FIGS. 3 to 6), The movement component to becomes large. As shown in FIGS. 3 and 4, the closer the opening/closing position of the door 5 is to the fully closed position P0, the more the first and second link arms 11, 12 move in the vehicle longitudinal direction (in FIGS. 3 to 6, By extending in the left-right direction), the movement component in the vehicle width direction increases.

In addition, in the door device 20 of this embodiment, the first link arm 11 has a second rotational connection point X2 relative to the door 5 at a position closer to the center of gravity G than the second link arm 12. have. That is, in the door device 20 of this embodiment, this first link arm 11 is positioned as the main link 21 that supports a larger door load. The second link arm 12 is positioned at the sub-link 22 on which the door load acting thereon is relatively small.

In addition, in the door device 20 of this embodiment, the first link arm 11 has a larger external shape than the second link arm 12. The door device 20 of this embodiment is thus configured to provide high support rigidity to the first link arm 11 positioned at the main link 21 thereof.

Further, as shown in FIGS. 3 to 7, the door device 20 of the present embodiment includes a door-side engaging portion 31 provided at the front end 5f of the door 5, and a door-side engaging portion 31 provided at the front edge 3f of the door opening 3. A vehicle body side engaging portion 32 is provided. That is, in the vehicle 1 of the present embodiment, the door-side engaging portion 31 opens and closes the door opening 3 of the vehicle 1 based on the operation of the link mechanism 15 formed by the first and second link arms 11 and 12. It is provided at the closing side end portion 33 located on the closing operation side of 5. Further, the vehicle body-side engaging portion 32 is configured to close the door opening 3 such that the closing end 33 of the door 5 approaches or separates, that is, approaches or separates, based on the opening/closing operation of the door 5 that moves in the longitudinal direction of the vehicle. It is provided at the side end portion 34. The door device 20 of this embodiment is configured such that the door side engaging portion 31 and the vehicle body side engaging portion 32 engage with each other when the door 5 is in the vicinity of the fully closed position P0.

To be more specific, the door-side engaging portion 31 of the present embodiment includes a shaft-like engaging portion 41 extending in the vertical direction of the vehicle 1 (direction perpendicular to the plane of the paper in FIG. 7) as a guide engaging portion. There is. In the door device 20 of this embodiment, the shaft-like engagement portion 41 as the guide engagement portion is configured as a roller 41x rotatably supported around a support shaft (not shown) extending in the vertical direction. have. Further, the vehicle body-side engaging portion 32 includes a guide groove 42 that has a pair of side wall portions 42a and 42b facing each other in the vehicle width direction (vertical direction in FIG. 7) and extends in the opening/closing operation direction of the door 5. ing. In the door device 20 of this embodiment, when the door 5 is in the vicinity of the fully closed position P0, the shaft-shaped engaging portion 41 constituting the guide engaging portion is disposed within the guide groove 42. The door side engaging portion 31 and the vehicle body side engaging portion 32 are configured to engage with each other.

That is, the shaft-shaped engaging portion 41 of the door-side engaging portion 31 is disposed within the guide groove 42 of the vehicle body-side engaging portion 32 while being sandwiched between a pair of side wall portions 42a and 42b facing each other in the vehicle width direction. This restricts the displacement of the door 5 in the vehicle width direction. Therefore, the door device 20 of the present embodiment can close the door 5 even in the vicinity of the fully closed position P0, where the first and second link arms 11 and 12 forming the link mechanism 15 are likely to be lined up. It is possible to provide stable support.

As shown in FIGS. 8 and 9, the door device 20 of the present embodiment engages the door-side engaging portions 31, 31 provided at the front end 5f of the door 5 at two positions spaced apart in the vertical direction. We are prepared. Further, this door device 20 includes vehicle body side engaging portions 32, 32 provided on the front edge 3f of the door opening 3 at two positions similarly spaced apart in the vertical direction. The door device 20 of this embodiment is configured to hold the door 5 in the fully closed position P0 with the door side engaging parts 31, 31 and the vehicle body side engaging parts 32, 32 engaging with each other. It has become.

Further, the door device 20 of this embodiment includes lock devices 35, 35 provided at the front end 5f and rear end 5r of the door 5. In the door device 20 of the present embodiment, the latch mechanisms (not shown) constituting each of these lock devices 35 engage strikers (not shown) provided on the vehicle body 2, so that the door 5 is locked. It is configured to be restricted to the fully closed position P0.

Further, as shown in FIGS. 3 to 6, in the door device 20 of this embodiment, the second link arm 12 positioned as the sub-link 22 has its first and second rotational connection points X1. , X2 is provided. Furthermore, this variable length linkage mechanism 50 has a length between its first and second rotational link points X1 and X2, that is, the length of the door by the second link arm 12 on which this variable length linkage mechanism 50 is provided. It is biased in the direction of shortening the connection length L of No. 5. The door device 20 of this embodiment is thus configured such that the door 5 opens and closes while the connection length L of the second link arm 12 is shortened.

Further, as shown in FIGS. 3, 4, and 7, in the door device 20 of this embodiment, the door side Opening/closing operations of the door 5 are permitted in a state in which the mating portion 31 and the vehicle body-side engaging portion 32 are engaged. Specifically, when the door 5 opens and closes while the door-side engaging portion 31 and the vehicle body-side engaging portion 32 are engaged, the connection length L is changed based on the operation of the variable connection length mechanism 50. However, the shaft-like engaging portion 41 is relatively displaced along the direction in which the guide groove 42 extends. As a result, in the door device 20 of this embodiment, the opening/closing operation locus R of the door 5 changes.

That is, in the door device 20 of the present embodiment, when the door 5 moves to the fully closed position P0, the door side engaging portion 31 engages with the vehicle body side engaging portion 32, so that the door device 20 moves into the guide groove 42. The opening/closing operation of the door 5 is guided in a state in which the shaft-shaped engaging portion 41 is arranged. Thus, the door device 20 of the present embodiment is configured such that the arcuate trajectory Rg based on the operation of the link mechanism 15 changes to a linear trajectory Rs along the opening width direction of the door opening 3. ing.

Specifically, in the door device 20 of this embodiment, when the door 5 is fully closed, the door side engaging portion 31 and the vehicle body side engaging portion 32 are engaged with each other, and the door 5 is closed. An operating force in the direction of the closing operation is applied. In the door device 20 of this embodiment, the operating force for opening and closing the door 5 is assumed to be the driving force of a drive device described later or a manual operation by a user. Further, in this case, the connection length variable mechanism 50 provided on the second link arm 12 is operated based on the operating force in the closing direction, so that the door-side engaging portion 31 and the vehicle body-side engaging portion 32 are connected to each other. Based on the engaged state, the connecting length L of the door 5 by the second link arm 12 is extended. Then, the door device 20 of the present embodiment has a configuration in which the door 5 supported by the link mechanism 15 closes toward the fully closed position P0 in a manner that draws the linear trajectory Rs as described above. It has become.

When the door 5 is opened from the fully closed position P0, the door 5 is operated in the opening direction while the door-side engaging portion 31 and the vehicle body-side engaging portion 32 are engaged. power is given. Furthermore, in this case, by operating the variable connection length mechanism 50 based on the operating force in the opening operation direction, the second The connection length L of the door 5 by the link arm 12 is shortened. The door device 20 of the present embodiment is thus configured such that the door 5 supported by the link mechanism 15 opens from the fully closed position P0 in a manner that similarly draws a linear trajectory Rs.

More specifically, as shown in FIGS. 10 and 11, in the door device 20 of this embodiment, the second link arm 12 includes a vehicle body side link 51 and a door side link 52. That is, the vehicle body side link 51 has a first rotational connection point X1 with respect to the vehicle body 2. Further, the door-side link 52 has a second rotational connection point X2 with respect to the door 5 of the vehicle 1. Furthermore, in the door device 20 of this embodiment, the second link arm 12 has a configuration in which the vehicle body side link 51 and the door side link 52 are rotatably connected. The door device 20 of this embodiment is configured such that the joint link mechanism 60 formed thereby functions as the variable connection length mechanism 50.

Specifically, the door side link 52 of this embodiment has a configuration as a so-called mini arm having a shorter axial length than the vehicle body side link 51. Further, the vehicle body side link 51 has a vehicle body side connecting portion 61 to the vehicle body 2 at one end in the longitudinal direction. Furthermore, the door-side link 52 also has a door-side connecting portion 62 to the door 5 at one end in its longitudinal direction. The vehicle body side link 51 and the door side link 52 each have intermediate connecting portions 63 and 64 connected to each other on the other end side in the longitudinal direction.

That is, in the door device 20 of this embodiment, these intermediate connecting portions 63 and 64 form an intermediate connecting point X3 of the joint link mechanism 60 provided on the second link arm 12. Further, the second link arm 12 has the intermediate connection point X3 as its apex, and the vehicle body side link 51 and the door side link 52 form a triangle. Then, as a result of the relative rotation of these vehicle body side links 51 and door side links 52, the length of the straight line connecting the first and second rotational connection points X1 and X2, which are the bases of the triangle, In other words, the connection length L changes.

(drive device)
Next, the drive device provided in the door device 20 of this embodiment will be explained.
As shown in FIGS. 12 to 17, the door device 20 of this embodiment uses a motor 70 as a drive source to support a vehicle 1 supported by a link mechanism 15 formed by first and second link arms 11 and 12. The door 5 is provided with a drive device 71 that drives the door 5 to open and close.

In the door device 20 of this embodiment, this drive device 71 is provided on the first link arm 11 positioned on the main link 21. Further, this drive device 71 applies a driving torque to the first rotational connection point X1 of the first link arm 11 with respect to the vehicle body 2. Thereby, the drive device 71 of this embodiment rotates together with the first link arm 11 configured as the drive link 80, and the link formed by the first link arm 11 The door 5 of the vehicle 1 is opened and closed based on the operation of the mechanism 15.

More specifically, as shown in FIGS. 14 to 18, in the door device 20 of this embodiment, the first link arm 11 includes a pair of pipe frames 81, 81 arranged vertically. The first link arm 11 includes a base end connecting portion 83 that connects the base end portions of these two pipe frames 81, 81, a tip end connecting portion 84 that connects the front end portions of these both pipe frames 81, 81, It is equipped with

Further, in the door device 20 of this embodiment, the base end connecting portion 83 constituting the first link arm 11 is rotatably connected while being fixed near the rear edge 3r of the door opening 3. A vehicle body bracket 85 is provided. Further, the door device 20 includes a door bracket 86, which is fixed to the inner surface 5s of the door 5 and to which a tip connecting portion 84, which also constitutes the first link arm 11, is rotatably connected. In the door device 20 of this embodiment, the first and second rotational connection points X1 and X2 in the first link arm 11 are thus formed.

Specifically, the door device 20 of this embodiment includes a rotation shaft 87 that extends in the vertical direction and passes through the base end connection portion 83 of the first link arm 11 and the vehicle body bracket 85. There is. The door device 20 also includes a rotation shaft 88 that extends vertically and passes through the end connecting portion 84 of the first link arm 11 and the door bracket 86. The door device 20 of this embodiment has a configuration in which the first link arm 11 relatively rotates around the respective rotation axes 87 and 88, with these rotation axes 87 and 88 serving as support axes N1a and N1b. It has become.

Further, in the door device 20 of the present embodiment, the drive device 71 includes an actuator 90 having a motor 70 serving as a drive source, and a transmission mechanism 100 that transmits the driving force to a position spaced apart from the actuator 90. We are prepared. The actuator 90 of this embodiment has a configuration as a so-called geared motor that includes a motor 70 and a reduction gear (not shown). Furthermore, the transmission mechanism 100 of the present embodiment uses the driving force generated by the actuator 90 as the driving torque of the first link arm 11 configured as a driving link 80 provided with a driving device 71, and transmits the driving force to the vehicle body 2. to the first rotational connection point X1. In the drive device 71 of this embodiment, the first link arm 11 rotates based on the drive torque applied to the first rotation connection point X1, so that the first link arm 11 is formed. The door 5 of the vehicle 1 supported by a link mechanism 15 is driven to open and close.

More specifically, in the door device 20 of this embodiment, the actuator 90 of the drive device 71 is supported at a substantially central portion in the longitudinal direction of the first link arm 11 . Specifically, the door device 20 of this embodiment has a bent plate shape with a substantially U-shaped cross section and is fixed to the first link arm 11 so that it is supported by the first link arm 11. It has a protective cover 101 that covers the outside of the actuator 90. In the door device 20 of the present embodiment, the protective cover 101 is in a state where both ends of the bent plate shape having a substantially U-shaped cross section fit between the pipe frames 81 and 81 of the first link arm 11. and is fixed to the first link arm 11. Furthermore, the drive device 71 of this embodiment uses the protective cover 101 as a fixing bracket 102 for the first link arm 11, and is located inside the protective cover 101 at a height position between the two pipe frames 81, 81. The actuator 90 is supported. Thereby, the door device 20 of the present embodiment has a drive link arm 11 in a position overlapping with the first link arm 11, when the first link arm 11 constituting the drive link 80 is viewed from above. The device 71 is configured to be supported (see FIGS. 15 and 17).

Further, as shown in FIGS. 19 to 22, in the drive device 71 of this embodiment, the transmission mechanism 100 has a configuration as a gear train 115 that transmits drive torque by meshing a plurality of gear members 110. ing.

Specifically, the actuator 90 of this embodiment uses the pinion gear 120 rotated by motor drive as its output portion 90x. Furthermore, the transmission mechanism 100 of the present embodiment includes a first stage gear member 121 that meshes with this pinion gear 120, a second stage gear member 122 that meshes with this gear member 121, and a second stage gear member 122 that meshes with this gear member 122. A third stage gear member 123 is provided. Furthermore, this transmission mechanism 100 is provided coaxially with a rotation axis 87 of the first link arm 11 that becomes the drive link 80, that is, a support shaft N1a that constitutes the first rotation connection point X1 with respect to the vehicle body 2. It has a fixed gear 125. The transmission mechanism 100 of this embodiment is configured such that the third stage gear member 123 meshes with the fixed gear 125.

To be more specific, the transmission mechanism 100 of this embodiment includes a case 126 that accommodates each of the first to third stage gear members 121 to 123 constituting the gear train 115. In the drive device 71 of this embodiment, the case 126 vertically sandwiches the gear members 121 to 123 of the first to third stages so that the case 126 can freely rotate the gear members 121 to 123. It includes an upper case 126a and a lower case 126b which are supported by the upper case 126a and the lower case 126b. Furthermore, in the transmission mechanism 100 of this embodiment, the case 126 is fixed to the first link arm 11. In the drive device 71 of this embodiment, the transmission mechanism 100 is also fixed to the first link arm 11 using its protective cover 101 as a fixing bracket 102. In the transmission mechanism 100 of the present embodiment, each of the first to third stage gear members 121 to 123 supported by the case 126, together with the actuator 90 having the pinion gear 120, It is configured to rotate together with the link arm 11.

Furthermore, in the transmission mechanism 100 of this embodiment, the fixed gear 125 is fixed to a vehicle body bracket 85 that serves as a fixing portion of the first link arm 11 to the vehicle body 2 (see FIGS. 15 and 18). Specifically, the vehicle body bracket 85 of this embodiment has a support piece 127 having a bent plate shape with a substantially L-shaped cross section. Furthermore, the fixed gear 125 has a fastening portion 128 for this support piece 127. The fixed gear 125 of this embodiment is a sector gear disposed coaxially with the rotation axis 87 of the first link arm 11 by fixing the fastening portion 128 to the support piece 127 of the vehicle body bracket 85. It has a section 129.

More specifically, in the transmission mechanism 100 of this embodiment, the gear members 122 and 123 constituting the second and third stages of the gear train 115 each have large and small gear parts with different gear diameters. It has a configuration as a two-stage gear that rotates coaxially and integrally. Specifically, the gear member 121 constituting the first stage of the gear train 115 meshes with the large diameter gear portion 122a of the gear member 122 constituting the second stage. Furthermore, the small diameter gear portion 122b of the second stage gear member 122 meshes with the large diameter gear portion 123a of the gear member 123 constituting the third stage of the gear train 115. The transmission mechanism 100 of this embodiment uses the third stage gear member 123 as a drive gear 130, and its small diameter gear portion 123b meshes with the sector gear portion 129 of the fixed gear 125 fixed to the vehicle body bracket 85. It is configured to do this.

Further, the case 126 of this embodiment has slit-like cutouts 131, 131 provided at one longitudinal end of the upper case 126a and the lower case 126b. Further, the transmission mechanism 100 of this embodiment includes a bearing member 132 having a substantially cylindrical sliding bearing portion 132x into which these notches 131, 131 fit. The transmission mechanism 100 of the present embodiment is configured such that the sliding bearing portion 132x of the bearing member 132 is disposed coaxially with the rotation axis 87 of the first link arm 11, and the first link serving as the drive link 80 is It is configured to be supported by an arm 11 (see FIGS. 15 and 17).

That is, in the door device 20 of this embodiment, the pivot point X4 of the case 126 is formed by the bearing member 132 at a position coaxial with the pivot shaft 87 of the first link arm 11. Furthermore, the rotation of the pinion gear 120 constituting the output section 90x of the actuator 90 is sequentially transmitted to each of the gear members 121 to 123 supported within the case 126. In the transmission mechanism 100 of this embodiment, the gear train 115 formed by each of these gear members 121 to 123 does not have a speed ratio. Furthermore, as a result, the gear member 123 serving as the drive gear 130 that meshes with the fixed gear 125 provided coaxially with the rotating shaft 87 of the first link arm 11 can transmit the drive torque, that is, rotate by the motor drive. It revolves according to the direction. The drive device 71 of this embodiment is thereby integrated with the case 126 of the transmission mechanism 100 that supports the drive gear 130, and the first link arm 11 as a drive link 80 in which the drive device 71 is provided. is rotated around the rotation axis 87. That is, by applying the driving torque of the first link arm 11 transmitted via the transmission mechanism 100 to the first rotational connection point X1 with respect to the vehicle body 2, the first and second link arms 11, The door 5 of the vehicle 1 supported by the door 12 is driven to open and close.

More specifically, in the door device 20 of the present embodiment, the bearing member 132 forming the pivot point X4 of the case 126 has its sliding bearing portion 132x disposed coaxially with the sector gear portion 129 of the fixed gear 125. , are integrally fixed to this fixed gear 125. Furthermore, the fixed gear 125 and the bearing member 132 are connected to each other by the case 126 and each of the gear members 121 to 123 supported inside, with the notches 131, 131 of the case 126 fitting into the sliding bearing portion 132x. At the same time, the transmission mechanism 100 is unitized. The fixed gear 125 and the bearing member 132 are provided with slit-shaped notches 133 and 134 extending in the radial direction at positions overlapping with the notches 131 and 131 of the case 126, respectively. It is being

That is, the transmission mechanism 100 of this embodiment is configured such that the notches 133 and 134 provided in the fixed gear 125 and the bearing member 132 are fitted to the rotation shaft 87, and the first It is assembled to the link arm 11 of. Thereby, the sector gear portion 129 of the fixed gear 125 and the sliding bearing portion 132x of the bearing member 132 forming the rotation fulcrum X4 of the case 126 can be easily moved to the rotation shaft 87 of the first link arm 11. It is possible to place it in a coaxial position.

Further, as shown in FIG. 23, the door device 20 of this embodiment includes a link cover 140 that covers the first link arm 11. Furthermore, in the door device 20 of this embodiment, the drive device 71 is also supported in a position covered by the link cover 140 together with the first link arm 11 that constitutes the drive link 80. In the door device 20 of this embodiment, when the door 5 supported by the link mechanism 15 formed by the first link arm 11 is in a fully closed state, the link cover 140 is attached to the side of the door 5. The armrest 142 of the seat 141 is located at the seat 141.

That is, the door device 20 of this embodiment is arranged with the first link arm 11 extending in the longitudinal direction of the vehicle when the door 5 is in the fully closed state (see FIGS. 3 and 12). Furthermore, at this time, the link cover 140 that covers the first link arm 11 is arranged at a position where the occupant seated on the seat 141 located on the side of the door 5 can place his or her arms and elbows. The door device 20 of this embodiment is configured such that the link cover 140 functions as an armrest 142, thereby allowing the occupant of the seat 141 to take a relaxed sitting posture.

Next, the operation of this embodiment will be explained.
That is, in the door device 20 of this embodiment, the first link arm 11 and the second link arm 12 are rotated by rotating the first link arm 11 based on the drive torque generated by the drive device 71. The door 5 supported by the link mechanism 15 formed opens and closes. Further, when the door 5 is opened, the drive device 71 supported by the first link arm 11 serving as the drive link 80 rotates together with the first link arm 11, thereby opening the door 5. Move in the direction of motion. In other words, the door 5 is separated from the door opening 3 in which it is provided. Thereby, this drive device 71 becomes less likely to get in the way of the occupant who uses the door opening 3.

Next, the effects of this embodiment will be explained.
(1) The door device 20 for a vehicle includes first and second link arms 11 having a first rotational connection point X1 with respect to the vehicle body 2 and a second rotational connection point X2 with respect to the door 5 of the vehicle 1; 12. Further, in the door device 20, the first link arm 11 is used as a drive link 80, and by rotating this drive link 80, the link mechanism 15 formed by the first and second link arms 11 and 12 is operated. The door 5 is provided with a drive device 71 that opens and closes the door 5 based on the following. The drive device 71 is provided on the first link arm 11 constituting the drive link 80, and applies a drive torque to the first rotational connection point X1. Rotate as one.

According to the above configuration, the space for arranging the drive device 71 on the vehicle body 2 side is not required. Therefore, when the occupant uses the door opening 3 provided with the door device 20, the drive device 71 is less likely to interfere with getting on and off the vehicle. In particular, when the door 5 is opened, the drive device 71, which rotates together with the drive link 80, moves in the direction of the door 5 opening operation. In other words, the door 5 is separated from the door opening 3 in which it is provided. This makes it even more difficult for the drive device 71 to interfere with the occupant using the door opening 3, thereby ensuring excellent ease of getting in and out. Therefore, according to the above configuration, the door 5 of the vehicle 1 can be suitably driven to open and close.

(2) The drive device 71 includes an actuator 90 that generates a drive torque, and a transmission mechanism 100 that transmits the drive torque at a position spaced apart from the actuator 90.
That is, both the proximal position close to the first rotational connection point X1 with respect to the vehicle body 2 and the distal side position close to the second rotational connection point X2 with respect to the door 5, when the door 5 is fully closed, The distance between the drive link 80 and the vehicle body 2 or door 5 to be connected tends to become narrow. Therefore, it is difficult to secure sufficient space for arranging the actuator 90. In this regard, according to the above configuration, the actuator 90 can be supported at a position on the longitudinal center side of the drive link 80 where it is relatively easy to secure the arrangement space. As a result, this actuator 90 can be arranged integrally with its drive link 80. As a result, the drive device 71 becomes less likely to interfere with the occupant using the door opening 3, thereby making it possible to ensure even better ease of getting in and out of the vehicle.

In particular, in a configuration in which driving torque is applied to the first rotational connection point X1 with respect to the vehicle body 2, the actuator 90 is supported at a position spaced apart from the first rotational connection point X1, so that the door 5 can be opened. At this time, the actuator 90 becomes far away from the door opening 3. As a result, it is possible to obtain a more remarkable effect of improving the ease of getting on and off the vehicle.

(3) The transmission mechanism 100 has a configuration as a gear train 115 that transmits drive torque by meshing a plurality of gear members 110. The transmission mechanism 100 also includes a case 126 fixed to the drive link 80, a fixed gear 125 provided coaxially with the rotation shaft 87 of the drive link 80, and a fixed gear 125 supported by the case 126. and a drive gear 130 that meshes with the drive gear 125. Further, the transmission mechanism 100 includes a bearing member 132 that forms a pivot point X4 of the case 126 coaxially with the pivot shaft 87 of the drive link 80. That is, this transmission mechanism 100 rotates the drive link 80 integrally with the case 126 based on the revolution movement of the drive gear 130 that rotates due to the transmission of drive torque. The case 126, the fixed gear 125, and the bearing member 132 are provided with notches 131, 133, and 134 in which the rotation shaft 87 is arranged.

That is, by using the gear train 115 in the transmission mechanism 100, a smooth and reliable drive torque transmission path can be ensured. Further, according to the above configuration, by inserting the rotation shaft 87 of the drive link 80 into the notches 131, 133, 134, the transmission mechanism 100 can be easily operated in a unitized state. can be correctly assembled to the drive link 80. As a result, the efficiency of the assembly work can be improved.

(4) The drive device 71 is supported by the drive link 80 at a position overlapping the drive link 80 when the drive link 80 is viewed from above.
According to the above configuration, the drive device 71 can be arranged integrally with the drive link 80 thereof. As a result, the drive device 71 becomes less likely to interfere with the occupant using the door opening 3, thereby making it possible to ensure even better ease of getting in and out of the vehicle.

(5) The door device 20 includes a link cover 140 that covers the first link arm 11 that constitutes the drive link 80 together with the drive device 71. In the door device 20, the link cover 140 constitutes an armrest 142 when the door 5 is in a fully closed state.

According to the above configuration, an occupant seated on the seat 141 located on the side of the door 5 supported by the link mechanism 15 formed by the first link arm 11 is seated on the link cover 140 that functions as an armrest 142. You can place your arm or elbow on it. This allows the occupant of this seat 141 to take a relaxed sitting posture.

(6) The door device 20 is provided on the second link arm 12 configured as a sub-link 22, and the connection length L between the first and second rotation connection points X1 and X2 can be changed. The connecting length variable mechanism 50 is provided. The door device 20 is configured such that the opening/closing operation locus R of the door 5 changes based on the operation of the variable connection length mechanism 50.

According to the above configuration, the degree of freedom in opening and closing operations can be increased based on the operation of the variable length linkage mechanism 50 provided on the second link arm 12. In addition, by using the first link arm 11, which is not provided with such a variable length mechanism 50, as the drive link 80, when the drive device 71 drives the door 5 to open or close, the variable length mechanism 50 is operated. The door 5 is less likely to shake. Thereby, the door 5 of the vehicle 1 can be driven to open and close more suitably.

(7) The first link arm 11 has a second rotational connection point X2 connected to the door 5 at a position closer to the center of gravity G of the door 5 than the second link arm 12.
According to the above configuration, the door 5 can be stably supported by the first link arm 11 positioned on the main link 21 that supports a larger load. Further, by using the first link arm 11 as the drive link 80, the drive device 71 can be stably supported. By applying a driving torque to the main link 21, the door 5 can be stably driven to open and close while suppressing the shaking of the door 5 caused by the application of the driving torque.

Note that the above embodiment can be modified and implemented as follows. The above embodiment and the following modification examples can be implemented in combination with each other within a technically consistent range.

- In the above embodiment, the first link arm 11 configured as the main link 21 is used as the drive link 80, and the first link arm 11 is provided with the drive device 71. However, the present invention is not limited to this, and the second link arm 12 configured as the sub-link 22 may be used as the drive link 80, and the second link arm 12 may be provided with the drive device 71. A configuration may also be adopted in which both the first and second link arms 11 and 12 are used as drive links 80, and a drive device 71 is provided for each of these first and second link arms 11 and 12.

- In the above embodiment, the drive torque of the drive link 80 is applied to the first rotational connection point X1 with respect to the vehicle body 2. However, the present invention is not limited to this, and a configuration may be adopted in which a driving torque is applied to the second rotational connection point X2 with respect to the door 5. Further, a configuration may be adopted in which driving torque is applied to both the first and second rotational connection points X1 and X2. In this case, a configuration may be adopted in which transmission mechanisms 100 and 100 for transmitting drive torque are provided to these first and second rotational connection points X1 and X2, respectively. A configuration may also be adopted in which a plurality of actuators 90 are used to apply driving torque to the first and second rotational connection points X1 and X2, respectively.

- In the embodiment described above, the transmission mechanism 100 has a configuration as a gear train 115 that transmits drive torque by meshing a plurality of gear members 110. This gear train 115 meshes with each of the gear members 121 to 123 constituting the first to third stages and the third stage gear member 123 as a drive gear 130. A fixed gear 125 is included.

However, the configuration of the gear train 115, such as the number and arrangement of the gear members 110, the shape of the case 126, etc., may be changed arbitrarily. Further, for example, a structure other than the gear train 115, such as a drive shaft or a drive belt, may be used in the transmission mechanism 100. In addition, the actuator 90 may be arranged near the rotation shaft 87 that applies the driving torque without using the transmission mechanism 100 that transmits the driving torque to a position distant from the actuator 90. .

- In the above embodiment, the door side engaging part 31 has the shaft-like engaging part 41 as a guide engaging part, and the vehicle body side engaging part 32 has the guide groove 42. However, the present invention is not limited to this, and a configuration may be adopted in which the door-side engaging portion 31 has the guide groove 42 and the vehicle body-side engaging portion 32 has the shaft-like engaging portion 41.

- Furthermore, although the shaft-like engaging portion 41 is configured as a roller 41x rotatably supported around a support shaft, it may be configured such that the shaft-like engaging portion 41 does not rotate. Furthermore, the guide engagement portion does not necessarily have to have a shaft shape. The shape of the guide groove 42 may also be changed arbitrarily. That is, in the vicinity of the fully closed position P0 where the door side engaging part 31 engages with the vehicle body side engaging part 32, the opening/closing operation of the door 5 is performed with the guide engaging part disposed within the guide groove 42. Any configuration is sufficient as long as it guides the user.

- In the above embodiment, the first link arm 11 configured as the main link 21 is arranged above the second link arm 12 configured as the sub link 22. The second link arm 12 is arranged closer to the closed end 33 of the door 5 than the first link arm 11 is. However, the arrangement of the first and second link arms 11 and 12 is not limited to this, and the arrangement of the first and second link arms 11 and 12 may be changed arbitrarily. For example, the second link arm 12 may have the second rotation connection point X2 at a position closer to the center of gravity G of the door 5 than the first link arm 11. In such a case, it is preferable to use the second link arm 12 as the drive link 80.

- In the above embodiment, the second link arm 12 is provided with the variable connection length mechanism 50. However, the present invention is not limited to this, and may be applied to a configuration in which the first link arm 11 is provided with the variable connection length mechanism 50. The present invention may also be applied to a structure in which the variable length mechanism 50 is provided on both the first and second link arms 11 and 12.

- Furthermore, from the viewpoint of suppressing the shaking of the door 5 due to the operation of the variable link length mechanism 50 when the drive device 71 drives the door 5 to open and close, it is desirable that the drive link 80 does not include the variable link length mechanism 50. However, a configuration in which the drive link 80 includes the variable link length mechanism 50 is also not excluded.

- In the embodiment described above, the variable connection length mechanism 50 is able to rotate the vehicle body side link 51 having the first rotation connection point X1 and the door side link 52 having the second rotation connection point X2. We decided to have a configuration as a joint link mechanism 60 that is connected. However, the configuration of the variable connection length mechanism 50 may be arbitrarily changed without being limited to this, such as using a direct-acting telescopic link mechanism. Further, such a variable connection length mechanism 50 may be applied to a configuration in which neither of the first and second link arms 11 and 12 is provided.

- In the above embodiment, the door 5 of the vehicle 1 was applied to a configuration in which the door 5 opens toward the rear of the vehicle, but the present invention may also be applied to a configuration in which the door 5 opens toward the front of the vehicle.
Next, technical ideas that can be understood from the above embodiment and modified examples will be described.

(a) A vehicle characterized in that, of the first and second link arms, the one having the second rotational connection point closer to the center of gravity of the door is used as the drive link. door device.

According to the above configuration, the door can be stably driven to open and close while suppressing the shaking of the door that occurs due to the application of drive torque. Accordingly, the door of the vehicle can be opened and closed more suitably.

DESCRIPTION OF SYMBOLS 1... Vehicle 2... Vehicle body 5... Door 20... Door device 11... First link arm 12... Second link arm 15... Link mechanism 71... Drive device 80... Drive link X1... First rotation connection point X2... Second pivot point

Claims (6)

first and second link arms having a first pivot connection to the vehicle body and a second pivot connection to the vehicle door;
Drive for opening and closing the door based on the operation of a link mechanism formed by the first and second link arms by rotating the drive link using at least one of the first and second link arms as a drive link; comprising a device;
The drive device is provided on the drive link and rotates integrally with the drive link by applying a drive torque to at least one of the first and second rotation connection points. The vehicle door device according to claim 1,
The drive device is
an actuator that generates the driving torque;
a transmission mechanism that transmits the drive torque to a position spaced apart from the actuator;
A vehicle door device comprising: The vehicle door device according to claim 2,
The transmission mechanism is a gear train that transmits the driving torque by meshing a plurality of gear members,
a case fixed to the drive link;
a fixed gear provided coaxially with the rotation axis of the drive link;
a drive gear that meshes with the fixed gear while being supported by the case;
a bearing member that forms a rotational fulcrum of the case at a position coaxial with the rotational axis of the drive link;
Equipped with
The drive link is rotated integrally with the case based on the revolution movement of the drive gear rotated by the transmission of the drive torque, and
A vehicle door device characterized in that the case, the fixed gear, and the bearing member are provided with a notch in which the rotation shaft is arranged inside. The vehicle door device according to any one of claims 1 to 3,
The vehicle door device is characterized in that the drive device is supported by the drive link at a position overlapping the drive link when the drive link is viewed from above. The vehicle door device according to any one of claims 1 to 4,
a link cover that covers the drive link together with the drive device;
A vehicle door device characterized in that when the door is in a fully closed state, the link cover constitutes an armrest. The vehicle door device according to any one of claims 1 to 5,
a linkage length variable mechanism provided on one of the first and second link arms and capable of changing the linkage length between the first and second rotational linkage points;
The opening/closing operation locus of the door changes based on the operation of the variable connection length mechanism, and
A vehicle door device characterized in that the other side of the first and second link arms on which the variable connection length mechanism is not provided is the drive link.

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