JP6829051B2 - Door lock device - Google Patents

Description

The present invention relates to a door lock device.

The door lock device includes a rotary lever connected to a door operating lever by a cable. If the rotary lever is a lock lever that switches between the unlocked state and the locked state of the door, it is necessary to take measures to prevent unauthorized operation at the connection part between the lock lever and the cable. Patent Document 1 discloses a door lock device that prevents theft due to unauthorized operation and prevents water from entering the housing by attaching a cover to the opening where the connection portion is exposed.

Japanese Unexamined Patent Publication No. 2004-204491

However, since the door lock device of Patent Document 1 is simply waterproof by providing a frame wall around the opening, there is a possibility that water may enter the opening through the gap between the frame wall and the cover. Therefore, the waterproof measures for the door lock device of Patent Document 1 are insufficient, and there is room for improvement.

An object of the present invention is to provide a door lock device capable of preventing water from entering through an opening of a housing without using a waterproof packing or the like.

The present invention is elastically deformed with a housing body having an opening and a mounting groove formed in the vicinity of the opening, and a body mounted on the housing body so as to close the opening. in and a seal lip is fitted to the mounting groove, e Bei a cover and the body portion and the seal lip is formed integrally, the mounting groove is formed above the opening It has a first wall portion extending in the lateral direction and a second wall portion located below the first wall portion at intervals, and the main body portion is on the upper end edge of the second wall portion. The seal lip has an elastically deformed portion that is continuous with the continuous portion and is curved toward the first wall portion, and a pressure contact portion that is pressed against the first wall portion. Provided is a door lock device that is inserted and fitted into the mounting groove from the elastically deformed portion .

In the door lock device of the present invention, by attaching a cover to the housing, the main body prevents unauthorized operation of the parts inside the opening, and the seal lip prevents water from entering the opening without using waterproof packing or the like. it can.

The perspective view which shows the door lock device of 1st Embodiment which removed the cover. Bottom perspective view of the door lock device. The bottom view of the door lock device of FIG. 2A. The perspective view which shows the internal structure of the door lock device. An exploded perspective view of the housing. An exploded perspective view showing the locking structure of the main case and the cover. Sectional drawing which shows the mounting groove and the seal lip in the mounted state. Sectional drawing which shows the mounting groove and a seal lip before mounting. FIG. 2 is a cross-sectional view showing a mounting groove and a seal lip of the second embodiment. FIG. 5 is a cross-sectional view showing a mounting groove and a seal lip of the third embodiment. FIG. 5 is a cross-sectional view showing a mounting groove and a seal lip according to a fourth embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First Embodiment)
1 to 6B show the door lock device 10 according to the first embodiment of the present invention. As shown in FIG. 2B, the door lock device 10 is arranged inside, for example, the door 1 of the vehicle (between the outer panel 2 and the inner panel 3). In the following description, the vehicle length direction of the door 1 is referred to as the X direction, the vehicle height direction of the door 1 is referred to as the Y direction, and the vehicle width direction of the door 1 is referred to as the Z direction.

A lock knob (not shown) for switching the door 1 between the locked state and the unlocked state is arranged on the inner panel 3 located inside the vehicle. Referring to FIG. 3, a lock lever 60 of the door lock device 10 is connected to the lock knob by a cable 12A. Referring to FIGS. 1 to 3, the connection portion between the cable 12A and the lock lever 60 exposed from the opening 44 of the housing body 20 is covered by the sub cover 45. In the present embodiment, it is possible to prevent water from entering the opening 44 through the gap between the housing body 20 and the sub cover 45 without using a waterproof packing or the like as a separate part.

(Overall configuration of door lock device)
As shown in FIGS. 1 to 2B, the door lock device 10 includes a housing 18 having a substantially L-shaped plan view. The housing 18 includes a housing body 20 having a main case 22, a main cover 33, and a sub case 42. In the main case 22, the second accommodating portion 24 projects in the orthogonal direction from one end of the first accommodating portion 23. The main cover 33 closes the opening of the first accommodating portion 23. The sub-case 42 is arranged in the second accommodating portion 24. The main cover 33 is arranged so as to extend in the X direction along the inner panel 3, and the sub case 42 is arranged so as to extend in the Z direction along the end surface 4. The end surface 4 is located on the opposite side of the hinge connecting portion of the door 1 to the vehicle body.

A latch mechanism, a switching mechanism, and an opening mechanism are arranged in the housing 18. Among them, a group of parts constituting the switching mechanism and a part of the group of parts constituting the opening mechanism are arranged in the first accommodating portion 23. The group of parts constituting the latch mechanism and the rest of the group of parts constituting the opening mechanism are arranged in the sub-case 42.

The latch mechanism keeps the door 1 closed with respect to the vehicle body by locking the striker fixed to the vehicle body so as to be detachable. This latch mechanism has the same configuration as the conventional one, which includes a fork that locks the striker detachably and a claw that holds the fork in the locking position.

The switching mechanism switches between an unlocked state in which the operating force of the opening mechanism can be transmitted to the latch mechanism and a locked state in which the operating force of the opening mechanism cannot be transmitted to the latch mechanism. As shown in FIG. 3, the switching mechanism includes a lock lever 60, a motor 61, a worm 62, a worm wheel 63, a joint 64, a switching lever 65, and a link 66. When the lock knob of the door 1 is operated, the lock lever 60 connected by the cable 12A rotates to move the joint 64 linearly in the Y direction. When the electronic key is operated, the worm wheel 63 is rotated via the worm 62 by the drive of the motor 61, so that the joint 64 is linearly moved in the Y direction. When the joint 64 moves linearly downward in the Y direction, the link 66 rotates to the unlocked position via the switching lever 65. When the joint 64 moves linearly upward in the Y direction, the link 66 rotates to the locked position via the switching lever 65.

The opening mechanism transmits the operating force of the inner handle of the door 1 and the operating force of the outer handle to the latch mechanism via the switching mechanism. As shown in FIGS. 2B and 3, the opening mechanism includes an inner lever 68 arranged in the main case 22, a child lever 69 arranged in the sub case 42, and an outer lever 70 arranged in the sub case 42. Be prepared. The inner lever 68 rotates by operating the inner handle connected by the cable 12B, and moves the link 66 upward via the child lever 69. The outer lever 70 rotates by operating the outer handle connected by a rod (not shown), and moves the link 66 directly upward. In the unlocked state, when the link 66 comes into contact with the receiving portion (not shown) of the latch mechanism, the rotational force of the levers 69 and 70 is transmitted to the latch mechanism to release the lock of the striker by the latch mechanism. In the locked state, the link 66 swings idle without contacting the receiving portion of the latch mechanism, so that the rotational force of the levers 69 and 70 cannot be transmitted to the latch mechanism, so that the striker cannot be unlocked by the latch mechanism.

(Details of cable connection part)
As shown in FIGS. 1 and 3, the lock lever 60 is a first rotary lever connected to the lock knob by the cable 12A. The inner lever 68 is a second rotary lever connected to the inner handle by the cable 12B. The cables 12A and 12B each include a flexible tubular tube 13 and a metal wire 14 that is movably inserted into the tube 13. Further, at the end of the wire 14, a cable end 15 for connecting to the cable connecting portions 60a and 68a of the levers 60 and 68 is provided.

At the connecting portion between the levers 60 and 68 and the cables 12A and 12B, a wire 14 having a predetermined length is exposed (advanced) from the end of the tube 13. When the wire 14 of the cable 12A is illegally operated, the locked door lock device 10 is switched to the unlocked state. Therefore, the levers 60 and 68 and the cables 12A and 12B are connected at the lower end of the housing 18. With the door lock device 10 attached to the door 1, the upper part of the connection portion is covered with the housing 18 to prevent unauthorized unlocking.

As shown in FIGS. 3 and 4, the main case 22 includes a bottom wall 25 that constitutes the bottom of the housing body 20. The bottom wall 25 is provided with an opening 26 for exposing the lock lever 60. Mounting portions 27 for cables 12A and 12B are provided on the lower surface side of the bottom wall 25 so as to be located near the opening 26. Further, the main case 22 is provided with a first shielding wall 28 that protrudes downward beyond the bottom wall 25. The first shielding wall 28 is provided with a shaft portion 29 for axially supporting the inner lever 68.

As shown in FIGS. 1 and 4, the main cover 33 includes a second shielding wall 34 located at a distance from the first shielding wall 28. The second shielding wall 34, like the first shielding wall 28, projects downward from the bottom wall 25. The second shielding wall 34 is provided with an opening 35 for exposing the cable connecting portions 60a and 68a of the levers 60 and 68 from the side.

The space between the pair of shielding walls 28, 34 including the openings 26, 35 is the opening 44 of the housing body 20. By providing the opening 44, illicit operation is suppressed as much as possible while improving workability when connecting the cables 12A and 12B to the levers 60 and 68. However, the housing body 20 provided with the opening 44 still has room for improvement as an anti-theft measure. Further, if the water that has entered the door 1 adheres to the wires 14 and the levers 60 and 68 in the cold season, the levers 60 and 68 malfunction due to freezing. Therefore, in the present embodiment, as shown in FIGS. 1 to 2B, the opening 44 of the housing body 20 is covered with the sub cover 45.

(Details of sub-cover mounting structure)
As shown in FIGS. 4 and 5, the sub-cover 45 includes a main body 46 for closing the opening 44 and a seal lip 55 for preventing water from entering the opening 44. The seal lip 55 is integrally molded with the main body 46, and is fitted into the mounting groove 36 formed in the housing main body 20.

The main body 46 includes a first portion 47 that closes the opening 35 of the main cover 33, and a second portion 48 that closes between the lower ends of the shielding walls 28 and 34. The second portion 48 closes the lower opening of the housing body 20 and is located below the levers 60 and 68 mounted on the housing body 20. A plurality of (three in this embodiment) locking claws 49 that can be elastically deformed are projected from the tip of the second portion 48. The first shielding wall 28 of the main case 22 is provided with a locking hole 30 into which the locking claw 49 is locked. The sub cover 45 is arranged from the main cover 33, and is attached to the housing main body 20 by inserting and locking the locking claw 49 into the corresponding locking hole 30.

Further, in the second portion 48, a holding portion 50 for pressing and holding the cables 12A and 12B is formed at the hinge connecting portion side end of the door 1 in the X direction. The holding portion 50 has a square columnar shape, and the tip of the holding portion 50 projects from the tip of the second portion 48. The first shielding wall 28 is provided with a holding hole 31 for inserting and holding the tip of the holding portion 50. The first portion 47 is provided with a screw hole 51 for fixing the tip of the shaft portion 29 for the inner lever 68.

The mounting groove 36 is a long groove having one end opening formed in the vicinity of the opening 35, and is formed in the main cover 33. The mounting groove 36 is located above the opening 35 and is provided from one end to the other end of the opening 44 in the X (lateral) direction. The mounting groove 36 includes a first wall portion 37, a second wall portion 38, and an end wall portion 39. The first wall portion 37 is made of a flat plate parallel to the ZX plane. The second wall portion 38 is composed of flat plates located below the first wall portion 37 in parallel at intervals. The end wall portion 39 is a groove bottom that closes the ends of the first wall portion 37 and the second wall portion 38 in the Z direction. A claw portion 40 for preventing the seal lip 55 from coming off is formed on the second wall portion 38 of the mounting groove 36. Referring to FIG. 1, two claw portions 40 are provided at intervals in the X direction.

As shown in FIGS. 4 to 6B, a continuous portion 52 arranged along the second wall portion 38 of the mounting groove 36 is provided on the upper end edge of the first portion 47 of the sub cover 45. The continuous portion 52 is bent with respect to the first portion 47 so as to project in the same direction as the second portion 48. On the outer surface of the continuous portion 52, a claw portion 53 corresponding to the claw portion 40 is projected toward the second portion 48. As most clearly shown in FIG. 5, the sub-cover 45 includes a reinforcing plate portion 54 continuous with the first portion 47, the second portion 48, and the continuous portion 52 at the end portion opposite to the holding portion 50.

The seal lip 55 is formed at the tip of the continuous portion 52 and is fitted into the mounting groove 36 in an elastically deformed state. The seal lip 55 includes an elastically deformed portion 56 continuous with the continuous portion 52 and a pressure contact portion 57 continuous with the elastically deformed portion 56. The elastically deformed portion 56 has an arcuate cross section having a predetermined curvature, and protrudes outward in the direction in which the first portion 47 extends from the end portion of the continuous portion 52. The pressure contact portion 57 is pressure contacted with the first wall portion 37, and is formed in a substantially right-angled trapezoidal shape. The outer surface 57a of the pressure contact portion 57 is brought into close contact (surface contact) with the lower surface 37a of the first wall portion 37 by the elastic force of the elastically deformed portion 56.

As shown most clearly in FIG. 6B, in the state before mounting, the pressure contact portion 57 from the outer surface of the continuous portion 52 is wider than the width W1 of the mounting groove 36 from the tip of the claw portion 40 to the lower surface 37a of the first wall portion 37. The width W2 of the seal lip 55 up to the tip of the outer surface 57a is wide. As shown in FIG. 6A, the seal lip 55 is elastically deformed to a width W1 by being mounted in the mounting groove 36. The wall thickness t1 of the continuous portion 52 is substantially the same as the wall thickness of the first portion 47 and the second portion 48. The wall thickness t2 of the elastically deformed portion 56 is thinner than the wall thickness t1 of the continuous portion 52 (t1> t2). The wall thickness t3 of the pressure contact portion 57 is thinner than the wall thickness t1 of the continuous portion 52 and thicker than the wall thickness t2 of the elastically deformed portion 56 (t1>t3> t2). As a result, the seal lip 55 is provided with a high elastic force, and workability at the time of mounting is improved. Further, in the mounted state, the outer surface 57a of the seal lip 55 is in pressure contact with the lower surface 37a of the mounting groove 36, thereby improving the waterproof property. Further, the claw portion 53 is urged by the elastic force of the elastically deformed portion 56 on the second wall portion 38 side, that is, on the side opposite to the direction in which the engagement with the claw portion 40 is released. The engagement state between the claw portion 40 and the claw portion 40 is reliably maintained, and the seal lip 55 is reliably prevented from being detached from the mounting groove 36.

In the door lock device 10, since the opening 44 of the housing main body 20 is closed by the main body 46 of the sub cover 45, it is possible to prevent unauthorized operation of the parts located in the opening 44. Further, since the seal lip 55 fitted into the mounting groove 36 of the housing main body 20 is integrally formed with the main body portion 46, it is possible to prevent water from entering the opening 44 without using a waterproof packing or the like.

For example, the water that has entered the door 1 descends along the outer surface of the housing body 20. When the water reaches the mounting groove 36, it travels through the first wall portion 37 and reaches the pressure contact portion with the seal lip 55. Since the pressure contact portion is the lower surface 37a of the first wall portion 37, water does not collect in the pressure contact portion 57 but falls on the continuous portion 52 or falls along the seal lip 55. Therefore, since it is possible to prevent water from accumulating in the pressure contact portion, it is possible to prevent water from entering the opening 44 from the pressure contact portion. As a result, it is possible to prevent malfunction of the levers 60 and 68 due to water adhering to the wires 14 and the levers 60 and 68 and freezing.

Further, since the sub cover 45 is provided with the holding portion 50 of the cables 12A and 12B to be arranged in the housing 18, it is possible to prevent the cables 12A and 12B from being separated from the levers 60 and 68. Moreover, since the claws 40 and 53 are formed in the formed portions of the mounting groove 36 and the seal lip 55, the seal lip 55 is separated from the mounting groove 36 even if vibration is applied to the door lock device 10 due to traveling. Can be prevented. Therefore, the waterproof performance of the door lock device 10 can be reliably maintained. Further, since the second portion 48 of the sub cover 45 is located below the levers 60 and 68 mounted on the housing body 20, it is not necessary to provide a waterproof structure such as a seal lip 55, and it is easy to use. Can be configured.

(Second Embodiment)
FIG. 7 shows the seal lip 55 of the sub cover 45 of the second embodiment. The configuration of the door lock device other than the seal lip 55 is the same as that of the first embodiment. The seal lip 55 of the second embodiment includes only a substantially semicircular elastically deformed portion 56 continuous with the continuous portion 52, and does not include the pressure contact portion 57 of the first embodiment shown in FIG. 6A. In this seal lip 55, the elastically deformed portion 56 functions as a pressure contact portion, and the tip of the elastically deformed portion 56 makes line contact with the first wall portion 37 along the X direction to prevent water from entering the opening 44. it can. Therefore, the seal lip 55 of the second embodiment can also obtain the same action and effect as that of the first embodiment.

(Third Embodiment)
FIG. 8 shows the seal lip 55 of the sub cover 45 of the third embodiment. The configuration of the door lock device other than the seal lip 55 is the same as that of the first embodiment. Similar to the second embodiment, the seal lip 55 of the third embodiment includes only the arc-shaped elastically deformed portion 56 that is continuous with the continuous portion 52. The cross-sectional shape of the elastically deformed portion 56 is formed in a substantially C shape in which the total length in the unfolded state is longer than that of the second embodiment. In the seal lip 55, the elastically deformed portion 56 functions as a pressure contact portion, and a part of the outer peripheral portion of the elastically deformed portion 56 makes line contact with the first wall portion 37 along the X direction into the opening 44. Can prevent flooding. Therefore, the seal lip 55 of the third embodiment can also obtain the same action and effect as that of the first embodiment.

(Fourth Embodiment)
FIG. 9 shows the seal lip 55 of the sub cover 45 of the fourth embodiment. The configuration of the door lock device other than the seal lip 55 is the same as that of the first embodiment. Similar to the second embodiment, the seal lip 55 of the fourth embodiment includes only the arc-shaped elastically deformed portion 56 that is continuous with the continuous portion 52. The elastically deformed portion 56 has a substantially V-shaped cross section, and includes a first portion 56a continuous with the continuous portion 52 and a second portion 56b bent in the opposite direction from the tip of the first portion 56a. The first portion 56a is formed so that the wall thickness gradually decreases, and the second portion 56b is formed with a uniform wall thickness (t2). In the seal lip 55, the second portion 56b of the elastically deformed portion 56 functions as a pressure contact portion, and the tip of the second portion 56b makes line contact with the first wall portion 37 along the X direction, so that the inside of the opening 44 Can prevent water from entering the area. Therefore, the seal lip 55 of the fourth embodiment can also obtain the same action and effect as that of the first embodiment.

The door lock device 10 of the present invention is not limited to the configuration of the above embodiment, and various changes can be made.

For example, the sub cover 45 does not have to be provided with the holding portions 50 of the cables 12A and 12B. Further, the parts to be covered by the sub cover 45 may be other than the connecting portion between the levers 60 and 68 and the cables 12A and 12B. Further, the mounting groove 36 does not have to be provided with a claw portion 40 for preventing the seal lip 55 from coming off. Further, the shape of the seal lip 55 may be a shape other than those of the first to fourth embodiments. Of course, the wall thickness of the seal lip 55 may be the same as that of the main body 46 as long as it can be elastically deformed.

1 Door 2 Outer panel 3 Inner panel 4 End face 10 Door lock device 12A, 12B Cable 13 Tube 14 Wire 15 Cable end 18 Housing 20 Housing body 22 Main case 23 1st housing 24 2nd housing 25 Bottom wall 26 Opening 27 Mounting Part 28 1st shield wall 29 Shaft part 30 Locking hole 31 Holding hole 33 Main cover 34 2nd shield wall 35 Opening 36 Mounting groove 37 1st wall part 37a Lower surface 38 2nd wall part 39 End wall part 40 Claw part 42 Sub Case 44 Opening 45 Sub cover (cover)
46 Main body 47 1st part 48 2nd part 49 Locking claw 50 Holding part 51 Screw hole 52 Continuous part 53 Claw part 54 Reinforcing plate part 55 Seal lip 56 Elastic deformation part 56a 1st part 56b 2nd part 57 Pressure welding part 57a Outer surface 60 lock lever (lever)
60a Cable connection 61 Motor 62 Warm 63 Warm wheel 64 Joint 65 Switching lever 66 Link 68 Inner lever (lever)
68a Cable connection 69 Child lever 70 Outer lever

Claims (5)

A housing body having an opening and a mounting groove formed in the vicinity of the opening,
It has a main body portion mounted on the housing main body so as to close the opening, and a seal lip fitted in the mounting groove in an elastically deformed state, and the main body portion and the seal lip are integrated. Bei example and a cover which is formed in,
The mounting groove has a first wall portion formed above the opening and extending in the lateral direction, and a second wall portion located below the first wall portion at intervals.
The main body portion has a continuous portion along the second wall portion at the upper end edge.
The seal lip has an elastically deformed portion that is continuous with the continuous portion and is curved toward the first wall portion, and a pressure contact portion that is pressed against the first wall portion, and the elastically deformed portion is attached to the seal lip. A door lock device that is inserted and fitted into a groove . The door lock device according to claim 1, wherein the wall thickness of the seal lip is thinner than the wall thickness of the main body portion. The door lock device according to claim 1 or 2 , wherein a claw portion for preventing the seal lip from coming off is formed in the mounting groove. A lever is rotatably arranged at the bottom of the housing body, and the end of the lever is exposed from the opening.
The door lock device according to any one of claims 1 to 3 , wherein the main body portion covers the end portion of the lever and the connection portion of the cable. The door lock device according to claim 4 , wherein a holding portion for pressing and holding the cable is formed on the main body portion.

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