KR20160054282A

KR20160054282A - Latch device for automobile

Info

Publication number: KR20160054282A
Application number: KR1020140153691A
Authority: KR
Inventors: 탁문배
Original assignee: 평화정공 주식회사
Priority date: 2014-11-06
Filing date: 2014-11-06
Publication date: 2016-05-16
Also published as: KR101653055B1

Abstract

According to the present invention, disclosed is a latch device for an automobile. The latch device for an automobile of the present invention includes: a base which comprises a movable groove part guiding movement of a striker and is fixed to a car body; a latch gear which is rotationally installed on the base, and confines the striker entered through the movable groove part; a pawl which is rotationally installed on the base, and confines rotation of the latch gear by an operation of being interlocked to the latch gear; an input lever part to rotate together with the pawl by being connected to the pawl; a pressurizing protrusion part to rotate the pawl by pressurizing the input lever part; and a driving part to supply power rotating the pressurizing protrusion part. The latch device of the present invention reduces operation noise and increases power to rotate the pawl.

Description

[0001] LATCH DEVICE FOR AUTOMOBILE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a latch apparatus for a vehicle, and more particularly to a latch apparatus for a vehicle which reduces operating noise and increases the force for rotating the foul.

Generally, a latch device installed in a trunk is operated by an operation of a drive switch installed in a driver's seat. The drive switch generates power by operating the drive unit, and the power of the drive unit rotates the latch gear that rotates the foul so as to restrain the striker.

Or the trunk latch device is opened by the operation of the key box provided outside the trunk latch device. That is, the power generated by the operation of the driving unit and the key box moves the fouls to unlock the latch gear, so that the latch device that holds the trunk in the locked state is switched to the open state.

Conventionally, there is a problem that operating noise and power loss are generated in the operation of rotating the foul by receiving the power of the driving part. Therefore, there is a need for improvement.

BACKGROUND ART [0002] The background art of the present invention is disclosed in Korean Utility Model Publication No. 1998-0046397 (published on September 25, 1998, entitled: Design of a Switch for a Trunk Latch for a Vehicle).

SUMMARY OF THE INVENTION It is an object of the present invention to provide a latch device for a vehicle that reduces operating noise and increases the force for rotating the fouls.

A latch device for an automobile according to the present invention includes: a base having a moving groove portion for guiding movement of a striker and fixed to a vehicle body; a latch gear rotatably installed on a base and restricting the striker, An input lever portion that is connected to the foul and rotates together with the foul, a pressing projection portion that presses the input lever portion to rotate the foul and a pressing projection portion that presses the input lever portion, And a driving unit for supplying power for rotating the projection.

It is also preferable that the foul and the input lever portion are integrally formed.

The input lever portion preferably includes a lever body extending in a direction crossing the foul on the upper side of the foul and a lever protrusion protruding from the lever body and positioned in a moving path of the pressing protrusion and rotated together with the foul by being pushed by the pressing protrusion .

It is preferable that the present invention further includes a sensor member installed in the movement path of the lever body and sensing whether the lever body rotates by contact.

It is also preferable that the pressing protrusion is fixed to a side surface of the rotating gear that receives the power of the driving unit and rotates about the rotation center axis of the rotating gear.

The pressing protrusion preferably includes a first protrusion extending along the side surface of the rotary gear and a second protrusion protruding from the first protrusion toward the rotational center axis of the rotary gear and pressing the input lever portion in contact with the input lever portion .

It is also preferable that a second projection is connected to both sides of the first projection to form a closed curve on the inside of the first projection and the second projection.

It is also preferable that the present invention further includes an elastic member connected to both sides of the latch gear and the foul, and supplying an elastic force such that the latch gear and the foul rotate in different directions.

In the latch device for an automobile according to the present invention, since the pressing projection portion is protruded toward the rotational center shaft of the rotary gear to come closer to the rotational center axis to receive the power, the force of the pressing projection for pressing the input lever portion is increased, Can be easily performed.

In addition, since the operating noise is generated only when the pressing projection portion contacts the input lever portion, the operating noise is reduced in comparison with the latch device in which the operating noise is generated even when moving to the home position.

1 is a perspective view schematically showing a structure of a latch device for a vehicle according to an embodiment of the present invention.
FIG. 2 is a perspective view schematically showing a state in which a cover member is separated from an automotive latch apparatus according to an embodiment of the present invention. FIG.
3 is a perspective view schematically illustrating a state in which a base is detached from an automotive latch apparatus according to an embodiment of the present invention.
4 is a perspective view schematically showing a configuration of a main portion of an automotive latch device according to an embodiment of the present invention.
5 and 6 are exploded perspective views of an automotive latch device according to an embodiment of the present invention.
7 is a front view schematically showing a state before the pressing projection according to an embodiment of the present invention is in contact with the input lever portion.
8 is a front view schematically showing a state in which the pressing projection according to the embodiment of the present invention is in contact with the input lever portion.
9 is a front view schematically showing a state in which the lock protrusion of the latch gear is released by rotating the foul along with the press protrusion according to the embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a vehicle latch device according to an embodiment of the present invention will be described with reference to the accompanying drawings. For convenience of explanation, an example of a latching device for a vehicle used for locking a trunk of a vehicle is described as an example. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

Further, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a perspective view schematically showing a structure of a latch device for a vehicle according to an embodiment of the present invention. FIG. 2 is a schematic view of a latch device for a vehicle according to an embodiment of the present invention, 3 is a perspective view schematically illustrating a state in which a base is detached from a latch apparatus for a vehicle according to an embodiment of the present invention. FIG. 4 is a perspective view of a latch apparatus for a vehicle according to an embodiment of the present invention. 5 and 6 are exploded perspective views of a latch device for a vehicle according to an embodiment of the present invention, and FIG. 7 is a perspective view illustrating a latching device according to an embodiment of the present invention, FIG. 8 is a front view schematically showing a state in which the pressing projection according to an embodiment of the present invention is in contact with the input lever portion, FIG. 9 is a front view It is one embodiment with the pressing projections in accordance with the example of the pawl rotates a front view schematically showing a state in which the lock of the latch gear is released.

1 to 4, a latch device 1 for a vehicle according to an embodiment of the present invention includes a moving groove 12 for guiding the movement of a striker 100, A latch gear 30 rotatably installed on the base 10 and restraining the striker 100 that has entered through the moving groove 12; An input lever portion 50 connected to the foul 40 and rotated together with the foul 40, and an input lever portion 50 connected to the foul 40, A pressing protrusion 60 for pressing the pressing protrusion 50 to rotate the foul 40 and a driving unit 70 for supplying power for rotating the pressing protrusion 60. [

The base 10 fixed to the vehicle body may be formed in various shapes within the technical idea of forming the moving groove 12 for the striker 100 to be inserted. The base 10 according to one embodiment is formed in a plate shape.

2 and 5, a latch gear 30 is rotatably installed on the right side of the base 10, and a foul 40 is rotatably installed on the left side of the base 10. The first support shaft 90 is inserted into the first connection hole 14 of the base 10 through the latch body 31 of the latch gear 30. The second support shaft 92 is inserted into the second connection hole 16 of the base 10 through the foul body 42 of the foul 40.

The cover member 20 is coupled to the base 10 with the drive portion 70 and the power transmission gear portion 80 interposed therebetween. Since the cover member 20 is installed in a shape that surrounds the driving unit 70 and the power transmission gear unit 80, it is possible to prevent foreign substances from entering the power transmission gear unit 80. The cover member 20 includes a movement restraining portion 22 for restraining the rotation of the input lever portion 50 connected to the foul 40 within a predetermined angle. The movable restraining portion 22 has a guide hole 24 into which the guide projection 56 protruding from the input lever portion 50 is inserted. The movement distance of the input lever portion 50 and the foul 40 is set according to the shape of the guide hole 24 because the guide hole 24 forms a hole having a long hole along the movement path of the guide projection 56. [

The latch gear 30 is rotatably installed on the base 10 and may be formed in various shapes within the concept of restricting the striker 100 that has entered through the moving groove 12. [ The latch gear 30 according to one embodiment includes a latch body 31, a first latching portion 32, a mounting groove portion 33, a second latching portion 34, a third latching portion 35, (36).

The latch body 31 has a mounting groove portion 33 which is rotatably installed on the base 10 and into which the striker 100 is inserted. The latch body 31 according to one embodiment is rotatably installed on the base 10 located on the right side of the moving groove 12 (reference in FIG. 2).

The first latching portion 32 is deformed into various shapes within the technical idea of restricting the downward deviation of the striker 100 by being positioned below the striker 100 which protrudes from the latch body 31 and is inserted into the mounting groove portion 33. [ . The first latching part 32 according to an embodiment extends in the horizontal direction of the latch body 31 at a locking position for restricting the striker 100. [ The first latching part 32 extends from the fully locked position toward the foul 40 and restrains the striker 100 located inside the moving groove 12 from moving to the lower side of the moving groove 12. [

The mounting groove portion 33 is located between the first engaging portion 32 and the second engaging portion 34 and the striker 100 moving up and down through the moving groove 12 of the base 10 is inserted As shown in Fig.

The second engaging portion 34 is spaced apart from the first engaging portion 32 with the mounting groove portion 33 interposed therebetween and restrains the upward movement of the striker 100 located in the moving groove 12.

The third latching part 35 may protrude from the latch body 31 spaced apart from the second latching part 34 and may be formed in various shapes within the technical idea of being caught by the foul 40 at the locking position. The third engaging portion 35 is engaged with the engaging projection 44 of the foul 40 at the lock position to restrain the rotation of the latch gear 30.

The latch extension piece 36 can be deformed into various shapes within the technical idea of protruding from the latch body 31 and supporting the elastic member 95. The latch extension 36 according to one embodiment protrudes forward from the upper side of the latch body 31 to support one side of the elastic member 95.

The latch gear 30 is configured such that the first latching portion 32, the mounting groove portion 33, the second latching portion 34, and the third latching portion 35 are fixed to the latch body 31 with the rotation axis of the latch body 31 as the center. (31).

The foul 40 is rotatably installed on the base 10 and may be formed in various shapes within the technical concept of restricting rotation of the latch gear 30 by engaging with the latch gear 30. The foul 40 according to one embodiment includes a foul body 42, a locking projection 44, and a foul extending piece 46.

The foul body 42 is rotatably mounted on the base 10 facing the latch gear 30 with the moving groove 12 therebetween.

One side of the second support shaft 92 is installed by passing through the foul body 42 and the second connection hole 16 of the base 10 in order. The second support shaft 92 passes under the foul body 42 while the hood latch 1 is in the locked position and the foul body 42 extends to the upper side of the second support shaft 92 .

The latching protrusion 44 protrudes from the foul body 42 toward the right side of the base 10 on which the latch gear 30 is installed The rotation of the latch body 31 is restrained. The locking protrusion 44 may be formed in various shapes within the technical idea of restricting the rotation of the latch gear 30 by protruding from the foul body 42. The latching protrusion 44 according to one embodiment protrudes in the direction toward the latch gear 30 from the side facing the latch gear 30. [

The foul extension piece 46 projects forward from the upper side of the foul 40 and supports the other side of the elastic member 95 that elastically supports the foul 40, .

5 to 7, the input lever portion 50 may be formed in various shapes within a technical pattern connected to the foul 40 and rotated together with the foul 40. The input lever portion 50 according to one embodiment includes a lever body 52, a lever projection 54, and a guide projection 56.

Since the foul 40 and the input lever portion 50 are formed integrally, the foul 40 is rotated together with the input lever portion 50. The lever body 52 extends from the upper side of the foul 40 in a direction intersecting the foul 40. When the foul body 42 is installed in the vertical direction (refer to FIG. 5), the lever body 52 projecting forward from the upper side of the foul body 42 is installed in the horizontal direction.

The pressing protrusion 60 protrudes upward from the lever body 52 and is located on the movement path of the pressing protrusion 60 and is pushed by the pressing protrusion 60 and rotated together with the foul 40. Thus, the lever body 52 is pushed by the pressing projection 60 and rotated about the second support shaft 92 together with the foul 40.

The guide protrusion 56 protrudes from the body of the lever body 52 toward the movement restricting portion 22 of the cover member 20 and is located inside the guide hole 24. Since the rotation of the input lever portion 50 pushed by the pressing protrusion 60 is performed inside the movement restricting portion 22, the rotation angle of the input lever portion 50 and the foul 40 can be controlled .

The pressing protrusion 60 may be formed in various shapes within the technical idea of pressing the input lever portion 50 to rotate the foul 40. The pressing protrusion 60 is fixed to the side surface of the rotating gear 84 that receives the power of the driving unit 70 and rotates and is rotated about the rotational center shaft 86 of the rotating gear 84.

The pressing projection 60 according to the embodiment includes a first projection 62 extending along the side surface of the rotary gear 84 and a second projection 62 extending from the first projection 62 to the rotation center axis 86 And a second protrusion 64 protruding toward the input lever portion 50 and pressing the input lever portion 50 in contact with the input lever portion 50.

The first protrusion 62 protrudes along the side surface of the rotary gear 84 and is formed into a circular curved surface. The second protrusions 64 are connected to both sides of the first protrusions 62 to form a closed curve inside the first protrusions 62 and the second protrusions 64. The shape of the closed curve formed inside the pressing projection 60 is formed in a triangular shape, and the outer edge portion of the pressing projection 60 forms a curved surface. The second projection 64 protruding toward the rotation center shaft 86 of the rotary gear 84 is engaged with the lever projection 54 of the input lever portion 50 when the pressing projection 60 contacts the lever projection 54 of the input lever portion 50 54 so that the input lever portion 50 can be rotated even with a small driving force.

The driving unit 70 may be formed in various shapes within the technical idea of supplying the power for rotating the pressing projection 60. The driving unit 70 according to one embodiment is located inside the cover member 20 and uses an electric motor.

Various types of gear devices may be used in the power transmission gear portion 80 within the technical idea of receiving the power of the driving portion 70 and rotating the pressing protrusions 60. [ The power transmitting gear portion 80 according to one embodiment includes a driving gear 82, a rotating gear 84, and a turning center shaft 86.

The driving gear 82 is mounted on the output shaft of the driving unit 70 and is rotated by the operation of the driving unit 70. The rotary gear 84 engaged with the drive gear 82 is formed in a disk shape and a bar-shaped rotation center shaft 86 is inserted into the rotation center of the rotary gear 84. Both sides of the rotation center shaft 86 are rotatably installed on the base 10 and the cover member 20. [

The elastic member 95 is connected at both sides to the latch gear 30 and the foul 40 and supplies the elastic force such that the latch gear 30 and the foul 40 rotate in different directions. A coil spring is used and one side of the elastic member 95 is connected to the latch extension piece 36 of the latch gear 30 and the other side of the elastic member 95 is connected to the fulcrum (40).

The sensor member 110 is installed in the movement path of the lever body 52, and detects whether the lever body 52 rotates by contact.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an operating state of an automotive latch device 1 according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

7, when the trunk door is opened, the driving unit 70 is operated to rotate the driving gear 82 when a user's operation signal is input. The rotary gear 84 engaged with the driving gear 82 starts rotating in the counterclockwise direction and the pressing projection 60 moves toward the lever projection 54 of the input lever portion 50. [ At this time, the latching protrusion 44 of the foul 40 is caught by the third latching portion 35 of the latch gear 30 to restrain the rotation of the latch gear 30, and the striker 100 is also engaged with the latch gear 30, And the rotation is restrained.

The second projection 64 of the pressing projection 60 comes into contact with the lever projection 54 of the input lever portion 50 and starts to move the input lever portion 50 as shown in Fig. Since the second projection 64 is located closer to the rotation center shaft 86 than the first projection 62, the input lever portion 50 can be easily rotated with less force than in the prior art.

9, when the pressing projection 60 continues to rotate counterclockwise together with the rotary gear 84 to move the input lever portion 50, the input lever portion 50 and the foul 40 And is rotated about the second support shaft 92. When the locking projection 44 is separated from the latch gear 30 by the rotation of the foul 40, the latch gear 30 starts to rotate clockwise by the elastic force of the elastic member 95. By this rotation of the latch gear 30, the striker 100 is unlocked.

As described above, according to the present invention, since the pressing protrusion 60 comes close to the rotation center shaft 86 protruding toward the rotation center shaft 86 of the rotary gear 84 and receiving the power, The force of the pressing protrusion 60 for pressing the pressing protrusion 50 is increased, so that the foul 40 can be easily rotated. In addition, since the operating noise is generated only when the pressing projection portion 60 contacts the input lever portion 50, the operating noise is reduced compared to the latch device in which the operating noise is generated even when moving to the home position.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined by the appended claims. will be. Also, although a car latch device used for locking a trunk of an automobile has been described as an example, the present invention is merely an example, and a car latch device according to the present invention can be applied to a door or a hood of an automobile. Accordingly, the true scope of the present invention should be determined by the following claims.

1: Automotive latch device
10: base 12: moving groove 14: first connection hole 16: second connection hole
20: cover member 22: moving restricting portion 24: guide hole
[0001] The present invention relates to a latch mechanism, and more particularly,
40: foul 42: foul body 44: engaging projection 46: Foul extension
50: input lever portion 52: lever body 54: lever projection 56: guide projection
60: pressing projection 62: first projection 64: second projection
70:
80: Power transmission gear portion 82: Drive gear 84: Rotary gear 86:
90: first support shaft 92: second support shaft 95: elastic member
100: striker 110: sensor member

Claims

A base fixed to the vehicle body and having a moving groove portion for guiding the movement of the striker;
A latch gear rotatably installed on the base and restricting the striker that has entered through the moving groove;
A fulcrum rotatably installed on the base and restraining rotation of the latch gear by engaging with the latch gear;
An input lever connected to the foul and rotated together with the foul;
A pressing protrusion for pressing the input lever to rotate the foul; And
And a driving unit for supplying power to rotate the pressing protrusion.

The method according to claim 1,
And the fulcrum and the input lever portion are integrally formed.

3. The method of claim 2,
Wherein the input lever portion includes: a lever body extending from the upper side of the foul in a direction crossing the foul; And
And a lever protrusion protruding from the lever body and positioned in a movement path of the pressing protrusion, the lever protrusion being pushed by the pressing protrusion and rotated together with the foul.

The method of claim 3,
Further comprising: a sensor member installed in a movement path of the lever body and sensing whether the lever body rotates by contact.

The method of claim 3,
Wherein the pressing projection part is fixed to a side surface of a rotating gear that receives power of the driving part and is rotated, and is rotated around a rotation center axis of the rotating gear.

6. The method of claim 5,
The pressing projection includes: a first projection extending along the side surface of the rotary gear; And
And a second protrusion protruding from the first protrusion toward a rotation center axis of the rotary gear and pressing the input lever portion in contact with the input lever portion.

The method according to claim 6,
And the second protrusions are connected to both sides of the first protrusions to form a closed curve inside the first protrusions and the second protrusions.

8. The method according to any one of claims 1 to 7,
Further comprising an elastic member connected to both the latch gear and the foul so as to supply an elastic force such that the latch gear and the foul rotate in different directions.