JP6716988B2 - Vehicle door latch device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle door latch device that holds a door in a closed state by engaging an engaging portion provided inside a door and an engaged portion provided on a vehicle body side.

Conventionally, as a vehicle door latch device of this type, an operation force of a door handle is transmitted to an open lever by a transmission cable to operate (rotate) the open lever, thereby engaging with a striker provided on a vehicle body side. There is proposed a method of canceling the above (for example, refer to Patent Document 1). In this door latch device, the first outer surface having the striker receiving groove for receiving the striker is addressed to the door end wall, and the second outer surface having one end of the striker receiving groove open to the door inner wall. It is fixed to the door in the closed state. The strip-shaped sealing members extending over the entire upper edge portion of the first outer surface that is directed to the door end wall and the entire upper edge portion of the second outer surface that is directed to the door inner wall are the door end wall and the door end wall, respectively. It is sandwiched between the inner wall of the door and the wall. As a result, it is possible to prevent water leakage at the connection end of the cable and the like simply by adding the band-shaped sealing member.

JP, 2013-83086, A

In the vehicle door latch device described above, water can be prevented from entering from above by the band-shaped sealing members provided at the upper edge portions of the first outer surface and the second outer surface, but water from other directions can be prevented. It is difficult to prevent water from entering from below due to intrusion, especially bounce.

The vehicle door latch device of the present invention is mainly intended to further improve the waterproof property inside the transmission cable with a simple configuration.

The vehicle door latch device of the present invention employs the following means in order to achieve the above-mentioned main object.

The vehicle door latch device of the present invention is
A vehicle door latch device for holding a door in a closed state by engaging an engaged portion provided in a door and an engaged portion provided on a vehicle body side,
A main body that accommodates the engaging portion and is fixed in the door,
A lever member that is driven based on an operation of a door handle to release the engagement between the engaging portion and the engaged portion,
It has an outer casing and an inner cable that is inserted into the inner cavity of the outer casing and has a tip exposed from the outer casing and connected to the lever member, and transmits an operating force from the door handle to the lever member. And a transmission cable for driving the lever member,
At least an upper side of the main body is joined, and a cover member that covers the inner cable exposed from the outer casing,
A seal member for sealing at least the upper side of the joint between the cover member and the main body,
The point is to have.

In this vehicle door latch device of the present invention, the cover member is joined to the main body so as to cover the inner cable exposed from the outer casing in the transmission cable that transmits the operating force of the door handle to the lever member. Further, the cover member is joined at least on the upper side of the main body, and at least the upper side of the joining portion between the cover member and the main body is sealed by the seal member. Thereby, the intrusion of water from the upper side can be prevented by the cover member and the seal member, and the infiltration of water from other directions can be suppressed by the cover member. As a result, the waterproof property inside the transmission cable can be further improved with a simple configuration.

In the vehicle door latch device of the present invention as described above, the seal member may be a double-sided tape for adhering a joint between the cover member and the main body. In this case, the cover member and the main body can be joined (adhered) and can also serve as a seal, so that the work efficiency in assembling the cover member can be further improved.

Also, in the vehicle door latch device of the present invention, one of the cover member and the main body has a convex rib that extends along a joint between the cover member and the main body and presses the seal member. You can also do it. With this configuration, the adhesion between the cover member and the main body can be increased, and the waterproof performance can be further improved.

Further, in the vehicle door latch device of the present invention, the cover member may be formed of a plurality of members, and a mating surface between the plurality of members may be sealed by a labyrinth structure. With this configuration, it is possible to easily assemble the cover member including the plurality of members to the main body, and it is possible to effectively prevent water from entering between the plurality of members.

Also, in the vehicle door latch device of the present invention, there is a locking groove that is formed on the main body side and that locks the outer casing, and the locking groove is with respect to an assembling direction of the main body to the door. Alternatively, the openings may be formed in a direction substantially orthogonal to each other. With this configuration, it is possible to prevent the assembled transmission cable from dropping from the locking groove when the main body is assembled to the door after the transmission cable is assembled to the locking groove.

1 is a schematic diagram of a vehicle 1 including a vehicle door latch device 20 as an embodiment of the present invention. 3 is an explanatory diagram showing a state in which the vehicle door latch device 20 is mounted on the door 10. FIG. FIG. 3 is an exploded perspective view showing the vehicle door latch device 20 in an exploded manner. 4 is an external perspective view showing the external appearance of the vehicle door latch device 20 when the cover portion 46 of the waterproof cover 40 is opened. FIG. 4 is an external perspective view showing the external appearance of the vehicle door latch device 20 when the cover portion 46 of the waterproof cover 40 is closed. FIG. It is explanatory drawing explaining a cable assembling direction and a body assembling direction. FIG. 6 is an external view showing an external appearance of a second cover including a frame portion 44 and a lid portion 46. It is sectional drawing which shows the AA cross section of FIG. It is sectional drawing which shows the BB cross section of FIG.

Modes for carrying out the present invention will be described using examples.

FIG. 1 is a schematic view of a vehicle 1 including a vehicle door latch device 20 according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram showing a state in which the vehicle door latch device 20 is mounted on a door 10. FIG. 3 is an exploded perspective view showing the vehicle door latch device 20 in an exploded manner, and FIG. 4 is an external perspective view showing an external appearance of the vehicle door latch device 20 when the lid portion 46 of the waterproof cover 40 is opened. FIG. 5 is an external perspective view showing the external appearance of the vehicle door latch device 20 when the cover portion 46 of the waterproof cover 40 is closed.

The vehicle door latch device 20 of the embodiment holds the door 10 in a closed state with respect to the vehicle body by engaging with a striker (not shown) fixed to the vehicle body, and is shown in FIG. 1 or 2. Thus, it is arranged in the space defined by the outside panel 11 and the inside panel 12 of the door 10 on the vehicle rear side. As shown in FIG. 3, the vehicle door latch device 20 has a body 22, a base plate 24 assembled to the body 22, and a waterproof cover 40 joined to the body 22, as shown in FIG.

The body 22 is a resin housing, and accommodates a latch mechanism 26, a lock mechanism, a lever mechanism, and the like.

The base plate 24 is a metal plate, and as shown in FIG. 3, a striker housing groove 24a capable of housing a striker is formed. The base plate 24 is provided with bolt holes 24b at a plurality of locations, and is directed from the inside to the end wall on the side opposite to the center of rotation of the door 10 and from the outside of the end wall to the bolt holes 24b. It is fixed to the door 10 by screwing the bolts together.

The latch mechanism 26 is a mechanism for holding the door 10 in a closed state with respect to the vehicle body, and includes a latch 27 that can be engaged with and disengaged from the striker. When the striker enters the striker housing groove 24a due to the closing operation of the door 10, the latch 27 is displaced to a latch position where it engages with the striker, and the latch 27 disengages to the unlatch position where it is released from engagement with the striker by a pole (not shown). As a result, the striker is held in the striker housing groove 24a. The latch 27 is biased by a torsion coil spring (not shown) in a direction in which it is displaced from the latched position to the unlatched position. When the lever is driven to release the displacement prevention by the pole, the torsion coil spring is released. It is displaced to the unlatched position by the urging force of and the meshing with the striker is released.

The lever mechanism includes an outside open lever 28 driven by an operating force from the outside door handle 16 and an inside open lever (not shown) driven by an operating force from an inside door handle (not shown). Prepare The outside open lever is linked with the outside door handle 16 via a transmission cable 30 as an operation force transmission member, and is driven by an operating force transmitted from the outside door handle 16 via the transmission cable 30. .. As shown in FIG. 2, the outside door handle 16 is arranged at a position above the door 10 and at the rear of the door window 13 so as to separate the division bar 14 (partition). Further, the inside open lever is linked with the inside door handle via an operation force transmitting member such as a transmission cable, and is driven by an operating force transmitted from the inside door handle via the operating force transmitting member. When the outside open lever 28 and the inside open lever are driven by the operation force of the door handle, the latch 27 is displaced from the latched position to the unlatched position, and the engagement between the latch 27 and the striker is released.

The lock mechanism is interposed between the latch mechanism 26 and the lever mechanism and transmits the driving force of the lever mechanism to the pawl so that the engagement between the latch mechanism 26 and the striker can be released. By switching the driving force from being transmitted to the pole, the latch mechanism 26 and the striker are switched to the locked state in which the engagement cannot be released. The lock mechanism is driven by an operation force of a key cylinder provided outside the vehicle or a lock knob provided inside the vehicle, or by a driving force of an electric actuator.

The transmission cable 30 is configured as a push-pull cable that connects the outside door handle 16 and the outside open lever 28. As shown in FIGS. 3 to 5, the transmission cable 30 includes a tubular outer casing 32 and an outer casing 32. An inner cable 34 (see FIG. 4) inserted through the inner cavity and a casing camp 36 crimped to the end of the outer casing 32 are provided.

The tip portion 34a of the inner cable 34 exposed from the outer casing 32 is formed in a spherical shape, and is locked by the outside open lever 28 by being inserted into a locking groove 28a formed in the outside open lever 28. ing.

The casing 36 has a groove 36a formed all around, and is fixed to the bracket 48 by being inserted into a locking groove 48a formed in the bracket 48. The bracket 48 is fixed to the body 22 with screws 49.

FIG. 6 is an explanatory diagram for explaining the cable assembling direction and the body assembling direction. The body 22 is assembled to the left in FIG. On the other hand, the outer casing 32 (casing cap 36) is fixed to the body 22 by inserting it into the locking groove 48a that opens in the direction from the back to the front in FIG. The vehicle door latch device 20 is assembled to the door 10 by assembling the transmission cable 30 to the body 22 (bracket 48) and then assembling the body 22 (base plate 24) to the door 10. As described above, since the door 10 is provided with an obstacle (such as the division bar 14) that may be an obstacle when the vehicle door latch device 20 is assembled, the transmission cable 30 is assembled to the body 22 (bracket 48). If the transmission cable 30 is attached to the door 10 in the state where the transmission cable 30 is in the open state, it is possible that the transmission cable 30 is caught by an obstacle and the transmission cable 30 falls off. In the present embodiment, the outer casing 32 (casing cap 36) is assembled in the direction orthogonal to the direction in which the body 22 (base plate 24) is assembled in the door 10. Therefore, the transmission cable 30 is assembled in the door 10. Can be suppressed.

As shown in FIGS. 3 to 5, the waterproof cover 40 is configured to cover the inner cable 34 exposed from the outer casing 32 and the casing cap 36, and is joined to the body 22. The waterproof cover 40 is a resin cover, and is configured by stacking a bottom portion 42, a frame portion 44, and a lid portion 46. In the present embodiment, the waterproof cover 40 includes a frame portion 44 and a lid portion 46 that are integrated via a connecting portion 47, and includes a first cover that forms a bottom portion 42, the frame portion 44, and the lid portion 46. It is composed of two members of the second cover to be formed. FIG. 7 shows an appearance of the second cover including the frame portion 44 and the lid portion 46.

As shown in FIG. 3, a locking claw 42 a is formed on the bottom portion 42, and the bottom portion 42 is fixed to the bracket 48 by being locked in a locking hole 48 b formed in the bracket 48, that is, fixed to the body 22. There is.

As shown in FIG. 3, the frame portion 44 has a fitting portion 44a and a locking claw 44b formed therein, and a fitting portion (not shown) formed on the bottom portion 42 and a locking hole 42b, respectively. The fitting portion 44a and the locking claw 44b are engaged with each other to join the bottom portion 42. Further, as shown in FIG. 4, the frame portion 44 has a joint surface 44c extending upward (upward in FIG. 4) and laterally (rightward in FIG. 4) from a side wall surrounding the inner cable 34. The joint surface 44c is joined to the body 22 with the seal member 50 interposed therebetween.

In this embodiment, the seal member 50 is an elastic double-sided tape having adhesive layers formed on the front and back sides, and the joint surface 44c of the frame portion 44 is bonded to the body 22 with the double-sided tape. FIG. 8 is a sectional view showing an AA section of FIG. As shown in FIGS. 7 and 8, a convex rib 44d is formed in a band shape on the joint surface 44c of the frame portion 44 along the joint surface 44c, and the sealing member 50 is formed by the rib 44d of the frame portion 44. Are crushed to improve the adhesion of the joint surface 44c.

As shown in FIG. 3, FIG. 5 or FIG. 6, the lid portion 46 is formed with a locking claw 46 a, and is joined to the bottom portion 42 by being locked in a locking hole 42 c formed in the bottom portion 42. , The opening of the frame portion 44 is closed. FIG. 9 is a cross-sectional view showing a BB cross section of FIG. As shown, the mating surfaces of the bottom portion 42, the frame portion 44, and the lid portion 46 are formed by a labyrinth structure in order to prevent water from entering. That is, each mating surface has two bent portions in the overlapping direction, and two orthogonal surfaces are in contact with each other.

According to the vehicle door latch device 20 of the embodiment described above, the waterproof cover 40 that covers the inner cable 34 exposed from the outer casing 32 is joined to the body 22 on the upper side, and the joint surface between the waterproof cover 40 and the body 22 is joined. A seal member 50 (double-sided seal) for sealing is provided. Thereby, the intrusion of water from above can be prevented by the waterproof cover 40 and the seal member 50, and the infiltration of water from other directions due to splashing of water can be prevented by the waterproof cover 40.

Further, according to the vehicle door latch device 20 of the embodiment, since the seal member 50 is configured by the double-sided seal, it is possible to serve as a joint between the waterproof cover 40 and the body 22 and also as a seal. The workability when assembling can be improved.

Further, according to the vehicle door latch device 20 of the embodiment, since the rib 42d is formed along the joint surface 42c (sealing member 50) of the waterproof cover 40 to the body 22, the sealing member 50 is crushed by the rib 42d. In this way, the adhesion with the body 22 can be enhanced, and the waterproof performance of the waterproof cover 40 can be further improved.

Further, according to the vehicle door latch device 20 of the embodiment, since the waterproof cover 40 is configured by superposing the bottom portion 42, the frame portion 44, and the lid portion 46, and the mating surfaces thereof are formed by the labyrinth structure, the mating surface is formed. It is possible to prevent water from invading, and it is possible to further improve the waterproof performance of the waterproof cover 40.

Further, according to the vehicle door latch device 20 of the embodiment, the transmission cable 30 (outer casing 32) is assembled in the direction orthogonal to the assembly direction to the door 10. Therefore, after the transmission cable 30 is assembled, the door 10 is assembled. It is possible to prevent the transmission cable 30 from dropping off when the transmission cable 30 is assembled.

In the vehicle door latch device 20 of the embodiment, the waterproof cover 40 is composed of the two members of the first cover forming the bottom portion 42 and the second cover including the frame portion 44 and the lid portion 46. It may be configured by three or more members, such as the lid portion 46 being a separate member, or the bottom portion 42, the frame portion 44, and the lid portion 46 may be configured by a single member.

In the vehicle door latch device 20 of the embodiment, the seal member 50 is configured by the double-sided seal having the adhesive layers on the front and back sides, but may be configured by the elastic member having no adhesive layer. In this case, the waterproof cover 40 may be mechanically joined to the body 22 with screws or the like.

In the vehicle door latch device 20 of the embodiment, the rib 44d is formed on the joint surface 44c of the waterproof cover 40 (frame portion 44), but the rib may be formed on the joint surface on the body 22 side. Such ribs may be omitted.

In the vehicle door latch device 20 of the embodiment, the transmission cable 30 (outer casing 32) is mounted in a direction orthogonal to the mounting direction to the door 10, but the mounting direction of the transmission cable 30 may be any direction.

The vehicle door latch device 20 according to the embodiment is applied to the vehicle-mounted door 10 on the rear side of the vehicle, but is applied to the vehicle-mounted door on the front side of the vehicle. It may be mounted on any door.

Correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problem will be described. In the embodiment, the latch 27 corresponds to the “engaging portion”, the striker corresponds to the “engaged portion”, the body 22 corresponds to the “main body”, and the outside open lever 28 corresponds to the “lever member”. However, the transmission cable 30 corresponds to a “transmission cable”, the waterproof cover 40 corresponds to a “cover member”, and the seal member 50 corresponds to a “seal member”. The rib 44d corresponds to the "rib". The locking groove 48a corresponds to a "locking groove".

The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problem is that the embodiment implements the invention described in the section of means for solving the problem. Since this is an example for specifically explaining the mode for carrying out the invention, it does not limit the elements of the invention described in the column of means for solving the problem. That is, the interpretation of the invention described in the column of means for solving the problem should be made based on the description in that column, and the embodiment is the invention of the invention described in the column of means for solving the problem. This is just a specific example.

Although the embodiments for carrying out the present invention have been described above with reference to the embodiments, the present invention is not limited to these embodiments, and various embodiments are possible within the scope not departing from the gist of the present invention. Of course, it can be implemented.

INDUSTRIAL APPLICABILITY The present invention is applicable to the manufacturing industry of vehicle door latch devices and the like.

1 vehicle, 10 door, 11 outside panel, 12 inside panel, 13 door window, 14 division bar, 16 outside door handle, 20 vehicle door latch device, 22 body, 24 base plate, 24a housing groove, 24b bolt hole, 26 Latch mechanism, 28 Outside open lever, 28a Locking groove, 30 Transmission cable, 32 Outer casing, 34 Inner cable, 34a Tip part, 36 Casing cap, 36a groove, 40 Waterproof cover, 42 Bottom part, 42a Locking claw, 42b , 42c locking hole, 42d rib, 44 frame part, 44a fitting part, 44b locking claw, 44c joining surface, 44d rib, 46 lid part, 46a locking claw, 47 connecting part, 50 sealing member.

Claims (3)

A vehicle door latch device for holding a door in a closed state by engaging an engaged portion provided in a door and an engaged portion provided on a vehicle body side,
A main body that accommodates the engaging portion and is fixed in the door,
A lever member that is driven based on an operation of a door handle to release the engagement between the engaging portion and the engaged portion,
It has an outer casing and an inner cable that is inserted into the inner cavity of the outer casing and has a tip exposed from the outer casing and connected to the lever member, and transmits an operating force from the door handle to the lever member. And a transmission cable for driving the lever member,
At least an upper side of the main body is joined, and a cover member that covers the inner cable exposed from the outer casing,
A seal member for sealing at least the upper side of the joint between the cover member and the main body,
Equipped with
The sealing member is a double-sided tape that bonds the joint between the cover member and the main body.
A vehicle door latch device characterized by the above. A vehicle door latch device for holding a door in a closed state by engaging an engaged portion provided in a door and an engaged portion provided on a vehicle body side,
A main body that accommodates the engaging portion and is fixed in the door,
A lever member that is driven based on an operation of a door handle to release the engagement between the engaging portion and the engaged portion,
It has an outer casing and an inner cable that is inserted into the inner cavity of the outer casing and has a tip exposed from the outer casing and connected to the lever member, and transmits an operating force from the door handle to the lever member. And a transmission cable for driving the lever member,
At least an upper side of the main body is joined, and a cover member that covers the inner cable exposed from the outer casing,
A seal member for sealing at least the upper side of the joint between the cover member and the main body,
Equipped with
The vehicle door latch device according to claim 1, wherein one of the cover member and the main body has a convex rib that extends along a joint between the cover member and the main body and presses the seal member . A vehicle door latch device for holding a door in a closed state by engaging an engaged portion provided in a door and an engaged portion provided on a vehicle body side,
A main body that accommodates the engaging portion and is fixed in the door,
A lever member that is driven based on an operation of a door handle to release the engagement between the engaging portion and the engaged portion,
It has an outer casing and an inner cable that is inserted into the inner cavity of the outer casing and has a tip exposed from the outer casing and connected to the lever member, and transmits an operating force from the door handle to the lever member. And a transmission cable for driving the lever member,
At least an upper side of the main body is joined, and a cover member that covers the inner cable exposed from the outer casing,
A seal member for sealing at least the upper side of the joint between the cover member and the main body,
Equipped with
A locking groove formed on the main body side for locking the outer casing,
The vehicle door latch device according to claim 1, wherein the locking groove is opened in a direction substantially orthogonal to an assembling direction of the main body to the door .

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