JP7732424B2 - Vehicle sliding door device - Google Patents

Description

The present invention relates to a vehicle sliding door device.

2. Description of the Related Art There is a sliding door device for a vehicle that includes a sliding door that can open and close a door opening provided in a vehicle body (see, for example, Patent Document 1).
Some vehicle sliding door devices include a slide rail attached to the vehicle body and a connecting mechanism that connects the slide door to the slide rail so that the slide door can slide relative to the slide rail. The slide rail has a straight portion extending in the longitudinal direction and a curved portion that bends from the front end of the straight portion toward the inside in the vehicle width direction. When the connecting mechanism is located in the straight portion, the slide door slides in the longitudinal direction of the vehicle at a slide position that is a certain distance outward in the vehicle width direction relative to the vehicle body. When the connecting mechanism moves from the straight portion to the curved portion, the slide door moves toward the inside in the vehicle width direction. When the connecting mechanism moves to the front end of the curved portion, the slide door fully closes the door opening.

A latch and locking member are rotatably attached to this connecting mechanism. The latch is configured to be engageable with a striker attached to the vehicle body. The locking member engages with the latch engaged with the striker to restrict the displacement of the latch and lock the sliding door to the vehicle body in the fully open position, and rotates between a locked position, which allows the latch to be displaced.

A cable is connected to the locking member, which is pulled in conjunction with the operation of the door handle to rotate the locking member. When the door handle is operated while the sliding door is locked to the vehicle body in the fully open position, the cable is pulled and the locking member is rotated. This rotates the locking member to the unlocked position, allowing the latch to displace, disengaging the latch from the striker and unlocking the sliding door from the vehicle body.

JP 2010-126891 A

However, in such vehicle sliding door devices, it is necessary to ensure a large passenger compartment space while also reducing cable wear caused by cable movement.

Various aspects of a vehicle sliding door device for solving the above problems will be described.
[Aspect 1] A sliding door device for a vehicle, comprising: a slide rail attached to a vehicle body; and a four-bar link mechanism that slidably connects a sliding door to the slide rail, where the front-to-rear direction of the vehicle is defined as the front-to-rear direction and the front and rear sides of the front-to-rear direction are defined as the front and rear sides, wherein the slide rail has a straight portion extending along the front-to-rear direction and a bent portion that extends and curves inward in the vehicle width direction from a front end of the straight portion, and the four-bar link mechanism has a rail-side arm slidably attached to the slide rail, a door-side arm fixed to the sliding door, and a pair of link members that are arranged side by side in the front-to-rear direction and connect the rail-side arm and the door-side arm so that they can rotate, and wherein the attitude of the four-bar link mechanism changes as the rail-side arm moves between the straight portion and the bent portion, thereby changing the distance between the door-side arm and the rail-side arm in the vehicle width direction. a locking function unit is attached to one of the pair of link members, the locking function unit including: a latch configured to be engageable with a striker provided on the vehicle body; and a locking member provided to be displaceable between a locked position where the latch engages with the latch in a state engaged with the striker to restrict displacement of the latch and lock the sliding door to the vehicle body in a fully open position, and an unlocked position where displacement of the latch is permitted; and a cable function unit is attached to the door-side arm unit, the cable including a cable extending in the fore-and-aft direction and operable to be pulled rearward, and a transmission unit that is drivingly connected to the cable and presses the locking member in conjunction with a pulling operation of the cable, thereby displacing the locking member from the locked position to the unlocked position, and the transmission unit is configured to be separated from the locking member at least when the four-bar link mechanism unit is positioned at the bent portion.

With the above configuration, when the sliding door slides to the fully open position, the latch engages with the striker and the locking member engages with the latch, locking the sliding door to the vehicle body in the fully open position.

On the other hand, when the cable is pulled, for example by operating the door handle, the transmission unit presses the locking member in conjunction with this. This causes the locking member to move from the locked position to the unlocked position, allowing the latch to move, thereby releasing the engagement between the latch and striker.

When the rail-side arm moves from the straight section of the guide rail to the bent section when the sliding door is moved toward the fully closed position, the posture of the four-bar link mechanism changes, reducing the distance between the door-side arm and the rail-side arm in the vehicle width direction. This means that the sliding door can be moved to the fully closed position even if the length of the bent section extending inward in the vehicle width direction is shortened. This allows for a larger interior space.

Here, it is conceivable to attach the latch and locking member to the link member and connect the cable to the locking member.
However, in this case, the cable is pulled by the change in the position of the locking member in response to the change in the position of the four-bar linkage mechanism, which causes the cable to move frequently, which can lead to accelerated wear on the cable.

Here, with the above configuration, the lock function unit is attached to one of the pair of link members, and the cable function unit is attached to the door-side arm unit. The transmission unit is configured to move away from the lock member at least when the four-bar link mechanism unit is positioned at the bent portion. Therefore, the transmission unit does not interfere with the lock member, which displaces in accordance with changes in the position of the four-bar link mechanism unit as it moves through the bent portion. This suppresses movement of the cable that is drivingly connected to the transmission unit. Therefore, wear on the cable due to cable movement can be suppressed.

[Aspect 2] The vehicle sliding door device described in [Aspect 1], wherein the transmission unit includes a first transmission member connected to one end of the cable and rotatably mounted relative to the door-side arm, and a second transmission member rotatably mounted relative to the door-side arm and pressed by the first transmission member, which rotates when the cable is pulled, to rotate and press the locking member.

According to the above configuration, the number of parts in the transmission section can be minimized.
[Aspect 3] A vehicle sliding door device as described in [Aspect 1] or [Aspect 2], wherein the locking function portion is attached to the rear link member located at the rear of the pair of link members.

According to the above configuration, the size of the locking function portion can be made smaller than when the locking function portion is attached to the front link member.
[Aspect 4] The locking function portion comprises an attachment member rotatably attached to the rear link member, and a support member rotatably attached to both the door-side arm portion and the attachment member, and the rear link member, the attachment member, the support member, and the door-side arm portion form a four-bar link, and the latch and the locking member are rotatably supported by the support member. This is a sliding door device for a vehicle described in [Aspect 1].

With the above configuration, a four-bar link is formed by the rear link member, the mounting member rotatably attached to the rear link member, the support member rotatably attached to both the door-side arm and the mounting member, and the door-side arm member. The latch and locking members are attached to the support member. This allows the latch and locking members to be positioned regardless of the shape of the rear link member. This increases the degree of freedom in positioning the locking function unit.

[Aspect 5] The locking function portion includes a fixing member fixed to the rear link member,
The vehicle sliding door apparatus according to [Aspect 1], wherein the latch and the locking member are each rotatably attached to the fixed member.

With the above configuration, the latch and locking members are attached to a fixed member fixed to the rear link member. By appropriately designing the shape of the fixed member, the latch and locking members can be positioned regardless of the shape of the rear link member. This increases the degree of freedom in positioning the locking function unit.

Furthermore, with the above configuration, the fixing member to which the latch and locking member are attached is fixed to the rear link member and not attached to the door-side arm portion. Therefore, the locking function can be realized with a simple configuration.

This invention allows for a larger interior space in the vehicle and reduces cable wear caused by cable movement.

FIG. 1 is a side view mainly showing a sliding door of a vehicle to which a sliding door device according to a first embodiment is applied. FIG. 2 is a plan view showing the operation of the sliding door device of FIG. FIG. 3 is a perspective view showing the door-side arm portion, the link member, and the lock function portion according to the first embodiment. FIG. 4 is a bottom view of the sliding door device in the fully open position according to the first embodiment. FIG. 5 is a bottom view of the sliding door device in the fully closed position according to the first embodiment. FIG. 6 is a plan view showing the lock function portion in the fully closed position in the first embodiment. FIG. 7 is a plan view showing the operation of the latch being pressed by the striker and pivoting in the first embodiment. FIG. 8 is a plan view showing the lock function portion in the fully open position in the first embodiment. FIG. 9 is a plan view showing the operation of releasing the engagement between the latch and the striker in the first embodiment. FIG. 10 is a perspective view showing the door-side arm portion, the link member, and the lock function portion according to the second embodiment. FIG. 11 is a bottom view of the four-bar link mechanism in the fully open position according to the second embodiment. FIG. 12 is a bottom view of the four-bar link mechanism in the fully closed position according to the second embodiment.

First Embodiment
The first embodiment will be described below with reference to FIGS.
In the following description, the front-to-rear direction of the vehicle will be referred to as the front-to-rear direction L, the width direction of the vehicle as the vehicle width direction W, and the up-to-down direction of the vehicle as the up-to-down direction Z. Furthermore, the front and rear sides of the front-to-rear direction L will be referred to as the front side and the rear side, the side toward the center of the vehicle in the vehicle width direction W will be referred to as the inside, the side away from the center of the vehicle will be referred to as the outside, and the upper and lower sides of the up-to-down direction Z will be referred to as the upper side and the lower side.

As shown in FIG. 1, a passenger entrance 93 through which passengers get on and off is provided on the side of the vehicle body 90. A sliding door 91 is provided on the outside of the passenger entrance 93 so that it can slide in the fore-and-aft direction L. A door handle 92 is attached to the outer surface of the sliding door 91. In addition, a door handle (not shown) is attached to the inner surface of the sliding door 91. By sliding in the fore-and-aft direction L, the sliding door 91 is displaced between a fully closed position that fully closes the passenger entrance 93 and a fully open position that fully opens the passenger entrance 93.

Attached to the vehicle body 90 are an upper slide rail 15, a lower slide rail 16, and a center slide rail 17 that guide the sliding door 91 so that it can slide in the fore-and-aft direction L.

The upper slide rail 15 is provided above the entrance 93. The lower slide rail 16 is provided below the entrance 93. The center slide rail 17 is provided behind the entrance 93, in the center of the entrance 93 in the vertical direction Z.

An upper coupling mechanism 15a provided at the upper end of the sliding door 91 is slidably coupled to the upper slide rail 15. A center coupling mechanism 17a provided at the middle of the sliding door 91 in the up-down direction Z is slidably coupled to the center slide rail 17. The upper end and middle of the sliding door 91 are supported by the upper slide rail 15 and the center slide rail 17, so that the sliding direction of the sliding door 91 coincides with the fore-and-aft direction L. In addition, the dimensions of the upper slide rail 15 and the center slide rail 17 at their front end sides in the vehicle width direction W are larger, allowing the sliding door 91 to move in the vehicle width direction W between near the fully closed position and the fully open position.

In the sliding door device 10, the sliding door 91 slides along the lower slide rail 16 between a fully closed position and a fully open position. Note that hereafter, the lower slide rail 16 will be referred to simply as the slide rail 11.

As shown in Figures 2 to 5, the sliding door device 10 includes a slide rail 11, a four-bar link mechanism 12 that connects the slide door 91 to the slide rail 11 so that the slide door 91 can slide, a lock function unit 13, and a cable function unit 14.

<Slide rail 11>
As shown in FIG. 2, the slide rail 11 has a straight portion 11a extending along the front-rear direction L, and a bent portion 11b extending inwardly from the front end of the straight portion 11a.

A striker 94 is provided on the vehicle body 90 rearward of the straight portion 11a.
<Four-bar link mechanism 12>
As shown in FIGS. 2 to 5, the four-bar link mechanism 12 has a rail-side arm 20, a door-side arm 30, and a pair of link members 40.

As shown in Figures 4 and 5, the rail-side arm unit 20 includes a base unit 21, three roller support units 25 provided on the base unit 21, and three rollers 22, 23, and 24 rotatably supported by the three roller support units 25. The three rollers 22, 23, and 24 are slidably mounted on the slide rail 11.

As shown in FIG. 4 , the base portion 21 is provided with a front rotation shaft 45 and a rear rotation shaft 46 that extend in the up-down direction Z. The front rotation shaft 45 and the rear rotation shaft 46 are aligned in the front-to-rear direction L. The front rotation shaft 45 is located forward of the rear rotation shaft 46.

The rotation axes of the front roller 22 and the rear roller 24 extend in the vertical direction Z. The rotation axis of the center roller 23 extends perpendicular to both the vertical direction Z and the extension direction of the slide rail 11.

As shown in Figures 3 and 4, the door-side arm portion 30 includes a bracket 31 fixed to the sliding door 91, a support plate 32 fixed to the underside of the bracket 31, and a mounting plate 35 fixed to the underside of the support plate 32.

The bracket 31 includes a vertical wall portion 31a that extends in the front-to-rear direction L and the up-down direction Z and is fixed to the sliding door 91, and a horizontal wall portion 31b that extends inward from the lower end of the vertical wall portion 31a.

The support plate 32 is fixed to the side wall portion 31b by bolts 33 and nuts (not shown).
The mounting plate 35 is fixed to the support plate 32 and the bracket 31 by bolts 36 and nuts 37 .

A front pivot shaft 43 and a rear pivot shaft 44 extending in the up-down direction Z are provided at the front of the support plate 32. The front pivot shaft 43 and the rear pivot shaft 44 are aligned in the front-to-rear direction L. The front pivot shaft 43 is located further forward than the rear pivot shaft 44.

The pair of link members 40 are arranged side by side in the front-rear direction L, and rotatably connect the rail-side arm portion 20 and the door-side arm portion 30 .
The pair of link members 40 includes a front link member 41 and a rear link member 42 located rearward of the front link member 41 .

The outer end of the front link member 41 is rotatably supported by the front pivot shaft 43. The outer end of the rear link member 42 is rotatably supported by the rear pivot shaft 44. The inner end of the front link member 41 is rotatably supported by the front pivot shaft 45. The inner end of the rear link member 42 is rotatably supported by the rear pivot shaft 46.

As shown in FIG. 4, when the sliding door 91 is in a fully open position, both the front link member 41 and the rear link member 42 extend in the vehicle width direction W.
As shown in FIG. 5, when the sliding door 91 is in the fully closed position, the front link member 41 and the rear link member 42 both extend in the front-rear direction L.

As shown in Figures 4 and 5, when the rail-side arm portion 20 is positioned at the bent portion 11b, the distance between the door-side arm portion 30 and the rail-side arm portion 20 in the vehicle width direction W is smaller than when the rail-side arm portion 20 is positioned at the straight portion 11a.

In other words, the posture of the four-bar link mechanism 12 changes as the rail-side arm 20 moves between the straight section 11a and the bent section 11b. This changes the distance between the door-side arm 30 and the rail-side arm 20 in the vehicle width direction W.

<Lock function unit 13>
As shown in FIGS. 4 and 5, the rear link member 42 is provided with a locking function portion 13 that locks the sliding door 91 to the vehicle body 90 in the fully open position.

The locking function portion 13 includes an attachment member 50 , a support member 53 , a receiving member 55 , a latch 60 , and a locking member 70 .
The mounting member 50 is in the shape of a flat plate and is attached to the rear link member 42 so as to be rotatable about a rotation shaft 51 extending in the up-down direction Z.

As shown in FIG. 4, when the sliding door 91 is in the fully open position, the mounting member 50 extends rearward from the pivot shaft 51 and then curves outward. The mounting member 50 is located below the rear link member 42.

As shown in Figures 4 and 5, the support member 53 is rotatably attached to both the door-side arm portion 30 and the mounting member 50. One end of the support member 53 is rotatably connected to the mounting plate 35 around a rotation shaft 54 extending in the vertical direction Z. The rotation shaft 54 is located on the mounting plate 35 at a position rearward of the rear rotation shaft 44.

The outer end of the mounting member 50 is connected to the support member 53 so that it can rotate around a rotation axis 52 extending in the vertical direction Z. The support member 53 is located below the mounting plate 35 and the mounting member 50.

The rear link member 42, the mounting member 50, the support member 53, and the door-side arm portion 30 form a four-bar link.
A receiving member 55 is fixed to the underside of the support member 53 .

A latch 60 is supported between the support member 53 and the receiving member 55 so that it can rotate around a rotation shaft 66 extending in the vertical direction Z. A first biasing member (not shown) is also provided between the support member 53 and the receiving member 55 to bias the latch 60 in one direction around the rotation shaft 66. The first biasing member is, for example, a torsion coil spring attached to the rotation shaft 66.

As shown in Figures 6 to 9, the latch 60 has a substantially disc-shaped base portion 61 through which the pivot shaft 66 is inserted, two arm portions 62 extending radially outward from the base portion 61, and a claw portion 64 protruding radially outward from the base portion 61. An engagement recess 63 that can engage with the striker 94 is formed between the arm portions 62.

As shown by arrow A in Figures 8 and 9, the latch 60 is biased by the first biasing member in a direction (counterclockwise in Figures 8 and 9) around the pivot shaft 66 in which the engagement between the latch 60 and the striker 94 is released.

A locking member 70 is supported between the support member 53 and the receiving member 55 so that it can rotate about a rotation axis 75 extending in the vertical direction Z. A second biasing member (not shown) is also provided between the support member 53 and the receiving member 55, biasing the locking member 70 in one direction about the rotation axis 75. The second biasing member is, for example, a torsion coil spring attached to the rotation axis 75.

As shown in Figures 6 to 9, the locking member 70 has a base portion 71 through which the pivot shaft 75 is inserted, and a claw portion 72 that protrudes radially outward from the base portion 71 and is configured to be able to engage with the claw portion 64 of the latch 60. The locking member 70 also has an extension portion 73 that extends radially outward from the base portion 71.

As shown by arrow B in Figures 7 and 8, the locking member 70 is biased by the second biasing member in a direction (counterclockwise in Figures 7 and 8) in which the claw portion 72 engages with the claw portion 64 around the pivot shaft 75.

The locking member 70 is provided so as to be rotatable between a locked position shown in FIG. 8 and an unlocked position shown in FIG.
8, in the locked position, the locking member 70 restricts the rotation of the latch 60 by engaging with the latch 60 which is engaged with the striker 94. As a result, the sliding door 91 is locked to the vehicle body 90 in the fully open position.

As shown in FIG. 9, the locking member 70 allows the latch 60 to rotate when in the unlocked position.
As shown in Figure 5, when the rail-side arm portion 20 is positioned at the bent portion 11b, the locking function portion 13 is configured to overlap with the door-side arm portion 30 and the rear link member 42 in the vertical direction Z.

<Cable function unit 14>
4, the cable function unit 14 is attached to the mounting plate 35. The cable function unit 14 includes a cable 80, a storage unit 81, and a transmission unit 82.

The cable 80 extends in the front-rear direction L and is pulled rearward.
The storage section 81 has a cylindrical shape extending in the front-rear direction L, stores the cable 80 , and is fixed to a stay 35 a extending outward from the mounting plate 35 .

One end 80 a of the cable 80 protrudes from the front end of the storage section 81 .
The transmission unit 82 is drivingly connected to the cable 80 and configured to press the locking member 70 in conjunction with the pulling operation of the cable 80, thereby rotating the locking member 70 from the locked position to the unlocked position.

The transmission unit 82 includes a first transmission member 83 and a second transmission member 85 .
The first transmission member 83 is connected to one end 80 a of the cable 80 and is provided rotatably with respect to the door-side arm portion 30 .

The first transmission member 83 is rotatable relative to the mounting plate 35 around a rotation shaft 84 extending in the vertical direction Z. The first transmission member 83 has a core portion 83a through which the rotation shaft 84 is inserted, an outer arm portion 83b that extends outward from the core portion 83a and is connected to one end 80a of the cable 80, and an inner arm portion 83c that extends inward from the core portion 83a.

The second transmission member 85 is rotatably mounted on the door-side arm portion 30 and is configured to rotate when pressed by the first transmission member 83, which rotates when the cable 80 is pulled, thereby pressing the locking member 70. The second transmission member 85 is located more inward than the first transmission member 83.

The second transmission member 85 is rotatable relative to the mounting plate 35 around a rotation shaft 86 extending in the vertical direction Z. The second transmission member 85 has a core portion 85a through which the rotation shaft 86 is inserted, an outer arm portion 85b extending outward from the core portion 85a, and an inner arm portion 85c extending inward from the core portion 85a.

As shown in Figures 4 and 5, the inner arm portion 85c of the second transmission member 85 is configured to move away from the locking member 70 when the rail-side arm portion 20 is positioned at the bent portion 11b.

That is, the transmission part 82 is configured to move away from the locking member 70 when the rail-side arm part 20 moves between the straight part 11a and the bent part 11b.
The operation of this embodiment will be described.

When the sliding door 91 slides from the fully closed position to the fully open position, the rail-side arm 20 moves from the front end of the bent portion 11b of the slide rail 11 to the rear end of the straight portion 11a. At this time, the front link member 41 rotates around the front pivot shafts 43, 45, and the rear link member 42 rotates around the rear pivot shafts 44, 46. This increases the distance in the vehicle width direction W between the door-side arm 30 and the rail-side arm 20 (see Figure 4).

At this time, as shown by arrow C in Figure 6, the support member 53 rotates around the rotation axis 54 in conjunction with the rotation of the rear link member 42. Note that Figure 6 shows a plan view of the lock function unit 13.

Then, as shown in Figure 4, as the rail-side arm portion 20 approaches the rear end of the straight portion 11a, the latch 60, locking member 70, and receiving member 55 move between the door-side arm portion 30 and the rail-side arm portion 20 in the vehicle width direction W.

At this time, as shown in Figure 7, as the rail-side arm portion 20 approaches the rear end of the straight portion 11a, the striker 94 enters the engagement recess 63 of the latch 60. Then, as the striker 94 presses against the engagement recess 63, the latch 60 rotates in the direction of arrow D (clockwise in Figure 7) around the pivot shaft 66.

As shown in Figure 8, the latch 60 rotates until the claw 64 is positioned rearward of the claw 72 of the locking member 70. Then, when the rail-side arm 20 reaches the rear end of the straight portion 11a, the latch 60 engages with the striker 94.

Here, the latch 60 is biased in the direction of arrow A (counterclockwise in Figure 8) around the pivot shaft 66 by the first biasing member. Meanwhile, the locking member 70 is biased in the direction of arrow B (counterclockwise in Figure 8) around the pivot shaft 75 by the second biasing member. As a result, the claw portion 72 of the locking member 70 and the claw portion 64 of the latch 60 press against each other, causing the locking member 70 to restrict displacement of the latch 60 and hold the sliding door 91 in a locked position that locks it to the vehicle body 90 in the fully open position.

As shown in FIG. 9 , when the door handle 92 is operated and the cable 80 is pulled rearward as indicated by arrow E, the first transmission member 83 rotates in the direction of arrow F (clockwise in FIG. 9 ) around the pivot shaft 84. Accordingly, the inner arm portion 83c of the first transmission member 83 presses the outer arm portion 85b of the second transmission member 85 forward, causing the second transmission member 85 to rotate in the direction of arrow G (counterclockwise in FIG. 9 ) around the pivot shaft 86. Accordingly, the inner arm portion 85c of the second transmission member 85 presses the extension portion 73 of the locking member 70. As a result, the locking member 70 rotates in the direction of arrow H (clockwise in FIG. 9 ) around the pivot shaft 75, thereby rotating the locking member 70 from the locked position to the unlocked position. As a result, the engagement between the claw portion 72 of the locking member 70 and the claw portion 64 of the latch 60 is released. Then, as the latch 60 is allowed to rotate, the first biasing member causes the latch 60 to rotate in the direction of arrow A (counterclockwise in Figure 9) around the pivot shaft 66, and the engagement between the latch 60 and the striker 94 is released.

As shown in Figures 4 and 5, when the rail-side arm 20 moves from the straight portion 11a to the bent portion 11b of the slide rail 11, the posture of the four-bar link mechanism 12 changes as follows. That is, the front link member 41 and the rear link member 42 rotate so that the front pivot shaft 43 and the rear pivot shaft 44 move forward of the front pivot shaft 45 and the rear pivot shaft 46, changing the posture of the four-bar link mechanism 12. This reduces the distance between the door-side arm 30 and the rail-side arm 20 in the vehicle width direction W.

The effects of this embodiment will be described.
(1-1) The sliding door device 10 is configured so that the distance between the door-side arm portion 30 and the rail-side arm portion 20 in the vehicle width direction W is changed by the four-bar link mechanism portion 12.

According to this configuration, even if the length of the bent portion 11b extending inward is shortened, the sliding door 91 can be moved to the fully closed position, thereby making it possible to increase the space inside the vehicle.
Here, it is conceivable to attach the latch 60 and the locking member 70 to the linking member 40 and connect the cable 80 to the locking member 70 .

However, in this case, the cable 80 is pulled as the position of the locking member 70 changes in response to changes in the position of the four-bar link mechanism 12. As a result, the cable 80 moves frequently, which can easily lead to wear on the cable 80 due to the movement of the cable 80.

In contrast to this, the transmission part 82 of this embodiment is configured to be separated from the locking member 70 when the four-bar link mechanism part 12 is positioned at the bent part 11b.
With this configuration, the transmission unit 82 does not interfere with the locking member 70, which is displaced in accordance with changes in the posture of the four-bar linkage mechanism 12. This suppresses movement of the cable 80, which is drivingly connected to the transmission unit 82. Therefore, wear on the cable 80 due to movement of the cable 80 can be suppressed.

(1-2) The transmission unit 82 includes a first transmission member 83 and a second transmission member 85 .
According to this configuration, the number of parts in the transmission unit 82 can be minimized.
(1-3) The lock function portion 13 is attached to the rear link member 42 .

According to this configuration, the size of the locking function part 13 can be made smaller than when the locking function part 13 is attached to the front link member 41 .
(1-4) The locking function unit 13 includes an attachment member 50 and a support member 53, and a four-bar link is formed by the rear link member 42, the attachment member 50, the support member 53, and the door-side arm unit 30. The latch 60 and the locking member 70 are supported by the support member 53.

According to this configuration, the latch 60 and the locking member 70 can be disposed regardless of the shape of the rear link member 42. Therefore, the degree of freedom in disposing the locking function portion 13 is increased.
Second Embodiment
The second embodiment will be described below with reference to FIGS.

In this embodiment, the configuration of the lock function section is different from that of the first embodiment.
The following description will focus on the differences from the first embodiment. Note that in the second embodiment, the same components as those in the first embodiment are given the same reference numerals, and corresponding components are given the reference numeral "1**" which is obtained by adding "100" to the reference numeral "**" in the first embodiment, thereby avoiding redundant description.

As shown in Figures 10 to 12, the locking function unit 113 includes a fixing member 100, a receiving member 155, a latch 160, and a locking member 170. Note that the locking function unit 113 does not include an attachment member 50 or a support member 53.

As shown in Figures 11 and 12, the fixing member 100 is flat and fixed to the rear link member 42 with two bolts 100a and two nuts (not shown). The fixing member 100 is located below the rear link member 42. When the sliding door 91 is in the fully open position, the fixing member 100 extends rearward from the rear link member 42.

A receiving member 155 is fixed to the underside of the fixed member 100 .
A latch 160 is supported between the fixed member 100 and the receiving member 155 so as to be rotatable around a rotation shaft 166. A first biasing member (not shown) is also provided between the fixed member 100 and the receiving member 155 to bias the latch 160 in one direction around the rotation shaft 166.

The latch 160 and the first biasing member have the same configuration as the latch 60 and the first biasing member of the first embodiment.
A locking member 170 is supported between the fixed member 100 and the receiving member 155 so as to be rotatable around a rotation shaft 175. In addition, a second biasing member (not shown) is provided between the fixed member 100 and the receiving member 155 to bias the locking member 170 in one direction around the rotation shaft 175.

The locking member 170 and the second biasing member have the same configuration as the locking member 70 and the second biasing member of the first embodiment.
As shown in FIG. 11 , when the rail-side arm portion 20 is located on the straight portion 11 a, the locking function portion 13 is located between the rail-side arm portion 20 and the door-side arm portion 30 in the vehicle width direction W.

As shown in Figure 12, when the rail-side arm portion 20 is positioned at the bent portion 11b, the locking function portion 13 overlaps with the door-side arm portion 30 and the rear link member 42 in the vertical direction Z.

The operation of this embodiment will be described.
As shown in Figures 11 and 12, when the rail side arm portion 20 moves from the bent portion 11b to the straight portion 11a of the slide rail 11, the lock function portion 13 rotates together with the rear link member 42 and becomes positioned between the rail side arm portion 20 and the door side arm portion 30.

According to this embodiment, in addition to the effects (1-1) to (1-3) of the first embodiment, the following new effects can be achieved.
(2-1) The lock function portion 113 includes a fixed member 100 fixed to the rear link member 42, and the latch 160 and the lock member 170 are each attached to the fixed member 100 so as to be rotatable relative to the fixed member 100.

With this configuration, by appropriately setting the shape of the fixing member 100, the latch 160 and locking member 170 can be positioned regardless of the shape of the rear link member 42. This increases the degree of freedom in positioning the locking function part 113.

Furthermore, with the above configuration, the fixing member 100 to which the latch 160 and locking member 170 are attached is fixed to the rear link member 42 and is not attached to the door-side arm portion 30. Therefore, the locking function portion 113 can be realized with a simple configuration.

<Example of change>
This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility.

In the first and second embodiments, the locking function portion 13 , 113 may be provided on the front link member 41 .
In the first and second embodiments, for example, the upper slide rail 15 may be embodied as the slide rail of the [Means for Solving the Problems].

- In the first and second embodiments, when the door handle 92 is not being pulled, the transmission part 82 and the locking member 70 may be spaced apart throughout the entire extension direction of the slide rail 11.

DESCRIPTION OF SYMBOLS 10...Sliding door device 11...Slide rail 11a...Straight portion 11b...Bent portion 12...Four-bar link mechanism portion 13...Lock function portion 14...Cable function portion 15...Upper slide rail 15a...Upper connecting mechanism 16...Lower slide rail 17...Center slide rail 17a...Center connecting mechanism 20...Rail side arm portion 21...Base portion 22, 23, 24...Roller 25...Roller support portion 30...Door side arm portion 31...Bracket 31a...Vertical wall portion 31b...Horizontal wall portion 32...Support plate 33...Bolt 35...Mounting plate 35a...Stay 36...Bolt 37...Nut 40...Link member 41...Front side link member 42...Rear side link member 43...Front side pivot shaft 44...Rear side pivot shaft 45...Front side pivot shaft 46...Rear side pivot shaft DESCRIPTION OF SYMBOLS 50...Mounting member 51...Pivoting shaft 52...Pivoting shaft 53...Support member 54...Pivoting shaft 55...Receiving plate 60...Latch 61...Base portion 62...Arm portion 63...Engagement recess 64...Claw portion 66...Pivoting shaft 70...Lock member 71...Base portion 72...Claw portion 73...Extending portion 75...Pivoting shaft 80...Cable 80a...One end 81...Storage portion 82...Transmission portion 83...First transmission member 83a...Core portion 83b...Outer arm portion 83c...Inner arm portion 84...Pivoting shaft 85...Second transmission member 85a...Core portion 85b...Outer arm portion 85c...Inner arm portion 86...Pivoting shaft 90...Vehicle body 91...Sliding door 92...Door handle 93...Incoming door 94...Striker 100...Fixing member 100a... Bolt 113... Locking function portion 155... Receiving member 160... Latch 166... Rotating shaft 170... Locking member 175... Rotating shaft

Claims (5)

A sliding door device for a vehicle,
When the longitudinal direction of the vehicle is defined as the longitudinal direction, and the front and rear sides of the longitudinal direction are defined as the front and rear sides,
A slide rail attached to the vehicle body,
a four-joint link mechanism that connects the sliding door to the slide rail so that the sliding door can slide;
The slide rail has a straight portion extending along the front-rear direction and a bent portion extending from a front end of the straight portion toward the inside in the vehicle width direction,
the four-bar link mechanism includes a rail-side arm portion slidably mounted on the slide rail, a door-side arm portion fixed to the slide door, and a pair of link members arranged side by side in the front-rear direction and rotatably connecting the rail-side arm portion and the door-side arm portion,
a distance between the door-side arm portion and the rail-side arm portion in the vehicle width direction is changed by changing the posture of the four-bar link mechanism portion as the rail-side arm portion moves between the straight portion and the bent portion,
One of the pair of link members is fitted with a locking function unit including a latch configured to be engageable with a striker provided on the vehicle body, and a locking member provided to be displaceable between a locked position where the latch engages with the latch in a state where the latch is engaged with the striker to restrict displacement of the latch and lock the sliding door to the vehicle body in a fully open position, and an unlocked position where the latch displacement is not restricted,
a cable function unit attached to the door-side arm unit, the cable function unit including a cable extending in the front-rear direction and being pulled rearward; and a transmission unit drivingly connected to the cable and pressing the locking member in conjunction with the pulling operation of the cable, thereby displacing the locking member from the locked position to the unlocked position;
the transmission unit is configured to be separated from the locking member at least when the four-bar link mechanism unit is positioned at the bent portion.
A sliding door device for a vehicle. The transmission unit includes a first transmission member connected to one end of the cable and rotatably provided with respect to the door-side arm unit, and a second transmission member rotatably provided with respect to the door-side arm unit, and pressed by the first transmission member, which is rotated by a pulling operation of the cable, to rotate and press the locking member.
The vehicle sliding door device according to claim 1. The locking function portion is attached to a rear link member located at the rear of the pair of link members.
3. The vehicle sliding door device according to claim 1 or 2. the lock function portion includes an attachment member rotatably attached to the rear link member, and a support member rotatably attached to both the door-side arm portion and the attachment member,
a four-bar link is configured by the rear link member, the mounting member, the support member, and the door-side arm portion,
The latch and the locking member are rotatably supported on the support member.
4. The vehicle sliding door device according to claim 3. the locking function portion includes a fixing member fixed to the rear link member,
The latch and the locking member are each rotatably attached to the fixing member.
4. The vehicle sliding door device according to claim 3.