JP-7856493-B2 - The latch device of the vehicle's back door and the latch device are

Inventors

• 小笠原 巧士
• 横田 佳明

Assignees

• 株式会社ハイレックスアクト

Dates

Publication Date

20260511

Application Date

20220603

Claims (6)

1. A latching device for the back door of a vehicle, A meshing unit having a meshing mechanism that engages with the striker of the vehicle, and a first housing that houses the meshing mechanism, A meshing release unit having a motor, a power-operated meshing release unit connected to the motor that releases the meshing mechanism from the striker by the power of the motor, and a second housing that houses the motor and the power-operated meshing release unit, The system includes a cover plate that supports the engaging unit and the disengaging unit, The first housing and the second housing are independent of each other. The engagement unit and the disengagement unit are adjacent to each other and supported on the same surface of the cover plate . The engagement mechanism comprises a latch capable of engaging with the striker, a latch shaft that rotatably supports the latch, a ratchet capable of engaging with the latch, and a ratchet shaft that rotatably supports the ratchet. The power-operated gear release unit has a gear transmission path that transmits the power of the motor to the gear meshing mechanism. The gear transmission path comprises at least one gear and at least one rotating shaft that rotatably supports the at least one gear. A latching device in which the latch shaft, the ratchet shaft, and the at least one rotating shaft are directly supported by the cover plate .
2. The at least one gear has multiple gears, The latch device according to claim 1 , further comprising a partition plate separating at least one gear from the plurality of gears from the motor.
3. The motor comprises a motor body and an output shaft connected to the motor body and having a connection portion to the gear transmission path. The latch device according to claim 1 or 2 , wherein the disengagement unit comprises a partition wall that separates the motor body from the connection portion and has a portion through which the output shaft passes, and a top plate that covers the motor body.
4. A set of latching devices for the back door of a vehicle, The set of latching devices comprises a first latching device and a second latching device. The first latch device and the second latch device are both latch devices according to claim 1, and each is, The meshing unit and the cover plate are included, Of the first and second latching devices, only the first latching device has a scinting function that pulls the striker into the meshing mechanism. A set of latching devices in which the cover plate and the engagement unit are substantially common to the first and second latching devices.
5. The meshing units of the first and second latching devices each have the first housing . The latch device set according to claim 4 , wherein the latch, the ratchet, and the first housing are common to the first and second latch devices.
6. With the back door closed, the rear end of the cover plate of the first latch device coincides with the rear end of the vehicle of the first latch device. The latch device set according to claim 4 or 5 , wherein, in the closed state of the back door, the vehicle rear end of the cover plate of the second latch device coincides with the vehicle rear end of the second latch device.

Description

This invention relates to a latching device and a set of latching devices for a vehicle's tailgate. A latching device for a vehicle's tailgate is known to use a motor to open the tailgate. Such a latching device comprises a meshing unit with a meshing mechanism that engages with a vehicle's striker, and a disengagement unit with a powered disengagement section that releases the meshing mechanism from the striker using motor power. Patent Document 1 discloses a latching device in which the meshing unit is supported on one side of a support member, and the disengagement unit is supported on the other side of the support member. The latching device disclosed in Patent Document 1 further includes a power scinting mechanism that uses motor power to bring the half-latched latch to a fully latched state. The power scinting mechanism is integrated with the disengagement unit and is supported together with the disengagement unit on the other side of the support member. Patent Document 2 discloses a latching device in which the meshing unit and the disengagement unit are housed in a common housing. The latching device disclosed in Patent Document 2 does not include a power scinting mechanism. Japanese Patent Publication No. 2021-195796Patent No. 5824767 This is a side view of the first and second latch devices attached to the vehicle's tailgate.This is an exploded side view of the first and second latching devices.This is a functional relationship diagram of the main elements of the first latching device.This is a perspective view of the first latching device.This is an exploded perspective view of the first latching device.This is an exploded perspective view of the engagement mechanism of the first latch device.This is an exploded perspective view of the upper part of the partition plate of the first latch device.This is a diagram showing the configuration of the gear transmission path of the first latching device.This is an exploded side view of the vicinity of the manual cutting section of the first latch device.This is a perspective view of the first housing of the first latching device.This is a perspective view of the ratchet of the first latching device.This is a perspective view of the third gear and the disengagement member of the first latching device.This is a perspective view of the lever member of the first latching device.This is a perspective view of the meshing mechanism and gear transmission path of the second latching device.This is a plan view of the engagement mechanism and memory lever of the second latching device. Embodiments of the present invention will be described with reference to the drawings. The present invention applies to two types of latch devices for back doors (first and second latch devices 1, 101). Of the first and second latch devices 1, 101, only the first latch device 1 has a scinting function that uses motor power to pull the striker S into the engagement mechanism 31. The second latch device 101 does not have a scinting function. Depending on the vehicle model and grade, only one of the first latch device 1 or the second latch device 101 may be installed in a single vehicle. For convenience, in this specification, the first latch device 1 and the second latch device 101 will be referred to as a set of latch devices. However, it should be noted that the first latch device 1 and the second latch device 101 may be manufactured and distributed separately. In the following description, terms such as "clockwise direction," "counterclockwise direction," and "top view" are defined as an upward view unless otherwise specified. The term "upward view" means looking from above in a direction perpendicular to the cover plate 2 which is on the horizontal plane. In the diagram, the X direction represents the vehicle width direction, the Y direction represents the vehicle's longitudinal direction, and the Z direction represents the vertical direction. These are defined assuming the cover plate 2 is in a horizontal plane. Figure 1(a) shows a side view of the first latch device 1 mounted on the back door D, and Figure 1(b) shows a side view of the second latch device 101 mounted on the back door D. Figure 2(a) shows an exploded side view of the first latch device 1 with the cover plate 2 in a horizontal plane, and Figure 2(b) shows an exploded side view of the second latch device 101 with the cover plate 2 in a horizontal plane. The first and second latch devices 1, 101 each include an engagement unit 3, an engagement release unit 6, and a cover plate 2. Mounting portions 21 for attaching the first and second latch devices 1, 101 to the back door D are provided on both sides of the cover plate 2 (see also Figure 4). The first and second latch devices 1, 101 are attached to the back door D by inserting bolts (not shown) through holes in the mounting portions 21. The engagement unit 3 and the engagement release unit 6 are adjacent to each other and supported on one surface 23 of the cover plat