KR100828439B1 - Anti-jam type door latch - Google Patents

Abstract

An anti-jam type door latch is provided to rotate a lock lever independently by causing first and second link members to pivot around a hinge, thereby solving jam. An anti-jam type door latch comprises a lock lever(20), a release lever(40), and a lock link(30). The lock lever is installed on a plate and moved by a key rod, a lock knob, or an actuator. The release lever is installed on the plate, and rotated by a handle. The release lever includes an unlock slot(42) at one end, and meets an actuating end(51) of a foul lever. The lock link is connected with one end of the lock lever and provided with an interlocking protrusion which is inserted into the unlocking slot of the release lever. The lock link includes first and second link members(31,32) and a torsion spring(34). The first lock link is hinged at the lock lever at one end. The second link member is provided with the interlocking protrusion at one end. Both first and second link members pivots around a hinge(33). The torsion spring is located between the first link member and the second link member.

Description

Anti-jam type door latch with jam reduction structure

1 is an overall configuration diagram of a door latch for an automobile having a jam releasing structure proposed as a preferred embodiment of the present invention.

2 is a door latch for an automobile having a jam releasing structure proposed as a preferred embodiment of the present invention, and shows a coupling state of the lock lever, the inner handle lever, the release lever, the lock link, and the foul lever,

3 is a door latch for an automobile having a jam releasing structure proposed as a preferred embodiment of the present invention, and shows the operating states of the lock lever, the inner handle lever, the release lever, the lock link, and the foul lever in sequence;

4 is a door latch for a vehicle which is not provided with a conventional jam releasing structure, showing a coupling state of a lock lever, an inner handle lever, a release lever, a lock link, and a foul lever.

**** Explanation of symbols for the main parts of the drawing ****

1. Door latch for automobile

10. Plate 20. Lock lever

21. Axes 22. End

30. Lock link 31. First link member

31a. Hinge 32. Second link member

32a. Interlocking protrusion 33. Hinge

34. Torsion Spring 34a. First

34b. The other end

40. Release lever 41. Shaft

42. Haejeong Slot

50. Foulever 51.

60. Internal handle lever 61. Shaft

70. Interlocking members

The present invention relates to a door latch for an automobile, and more particularly, when a lock lever and a release lever are simultaneously switched, a so-called jam that does not move the lock link connecting the lock lever and the release lever is eliminated. It relates to a door latch for a vehicle configured to be.

As is well known, the door latch for an automobile which aims to lock the door generally includes: a release lever for opening the door by switching a foul restricting the latch gear in one direction; It is configured to include an inner handle lever and an outer handle lever for providing a switching force of the release lever.

 In addition, a lock module is provided between the door handles to control the interlocking state between the inner handle or the outer handle and the release lever, so that the lock state of the door can be maintained.

However, when a user operates the steering wheel to switch the release lever 40 to open the door of the vehicle and another user attempts to switch the lock lever 20 by operating the remote controller, as shown in FIG. 4. Likewise, the interlocking protrusion 32a of the lock link 30 'interferes with the acting end 51 of the foul lever 50, so that the jam phenomenon in which the lock lever 20 is not switched is generated.

If such a jam occurs, release the handle, operate the remote control, etc. to switch the lock lever in one direction, and then switch the lock lever in the reverse direction again to set it to the unlocked state. Inconvenience in use occurs, and the problem that the linkage of the lock link is physically damaged.

An object of the present invention devised to solve the above problems is that when the lock lever and the release lever are simultaneously switched, the so-called lock link connecting the lock lever and the release lever does not move. It is to provide an automobile door latch configured to be.

The above object is achieved by the following configuration provided in the present invention.

Door latch for automobile having a jam releasing structure according to the present invention,

A lock lever axially mounted to the plate and switched left and right by an action of a key rod, a lock knob, or an actuator; A release lever which is installed on the plate and is switched by receiving an action force from the handle, and has a long freezing slot formed at one end thereof, and on one side of the freezing slot, a release lever at which an operating end of the foul lever is released; One end is coupled to the lock lever, the other end formed with the interlocking projection is configured to include a lock link is inserted into the release slot of the release lever, by the displacement of the interlocking protrusion formed on the lock link according to the switching of the lock lever, In the door latch for a vehicle configured to control the interlocking state of the release lever and the foul lever,

The lock link is configured such that one end of the first link member is hinged to the lock lever, and one end is dualized by a second link member having an interlocking protrusion, and hinged to the other end of the first link member and the second link member. By constructing to be able to fold, by installing a stop member between the hinged first link member and the second link member,

Even when the lock link interlocking projection is physically attached to and constrained by the actuating end of the release lever and the foul lever by the simultaneous switching of the lock lever and the release lever, the hinge of the first link member and the second link member Independent switching is configured to be implemented.

Preferably, the gripping member is a torsion spring, one end of the torsion spring is fixed to the first link member, the other end is attached to the second link member, and the hinge-bound first link member and the second link. The member is configured to have an elastic propensity to propel.

Hereinafter, with reference to the accompanying drawings will be described in detail a door latch for a vehicle having a jam releasing structure proposed as a preferred embodiment in the present invention.

1 is an overall configuration diagram of a door latch for a vehicle having a jam releasing structure proposed as a preferred embodiment in the present invention, Figure 2 is a door latch for a vehicle having a jam releasing structure proposed as a preferred embodiment in the present invention In the present invention, the lock lever and the inner handle lever and the release lever, and the lock link and the show the coupling state of the lever, Figure 3 is a door latch for an automobile having a jam releasing structure proposed as a preferred embodiment in the present invention, It shows the working status of lock lever, inner handle lever, release lever, lock link and foul lever in order.

The door latch 1 for an automobile having a jam releasing structure proposed as a preferred embodiment in the present invention is provided with a shaft 21 on the plate 10, as shown in FIGS. 1 to 3, and a key rod and a lock knob. Lock lever 20 is switched left and right by the action of the actuator (not shown); The shaft 41 is installed on the plate 10 and is switched by receiving an action force from the handle. At one end, a long freezing slot 42 is formed, and one side of the freezing slot 42 restrains the latch gear. A release lever 40 on which the operating end 51 of the foul lever 50 to release is located; One end is coupled to the lock lever 20, the lock link 30 is installed by inserting the interlocking projection (32a) formed on the other end into the unlocking slot 42 of the release lever (40); And an inner handle lever 60 installed on the plate 10 to interlock and switch the release lever 40.

The door lock device 1 for a vehicle configured as described above may be formed by the displacement of the release lever 40 and the foul lever 50 by the displacement of the interlocking protrusion 32a formed on the lock link 30 according to the left and right switching of the lock lever 20. The interlocking state is alternatively implemented so that the lock and unlock state of the door is controlled.

In detail, when the lock lever 20 is reversed and the linking protrusion 32a of the lock link 30 is located at one side of the release slot 42 of the release lever 40, the handle lever is operated by the handle. Even if the release lever 40 is switched to the left direction, since the operating end 51 of the foul lever 50 is not positioned on the pivot trajectory of the interlocking projection 32a, the door is not opened.

However, when the lock lever 20 is switched in one direction so that the linking protrusion 32a of the lock link 30 is located at the other side of the release slot 42 of the release lever 40, the turning trajectory of the linking protrusion 32a is provided. The operating end 51 of the foul lever 50 is located on the bar. When the release lever 40 is switched to the left by operating the handle, the operating end 51 of the foul lever 50 is interlocked with the interlocking protrusion 32a. Rotate in conjunction with the release lever 40 through.

Therefore, the restraint state of the latch gear is released by switching of the foul lever 50, thereby opening the door. (Unlocked state)

On the other hand, when the lock lever 20 is driven in the state that the release lever 40 is switched by the steering wheel operation of the vehicle door locking device 1 configured as described above, for example, a user to open the door of the vehicle If the other user attempts to switch the lock lever 20 by operating the remote control while the handle lever is operated to switch the release lever 40, the linkage projection 32a of the lock link 30 is the foul lever 50. By interfering with the working end 51 of the), the jam phenomenon that the lock lever 20 is not switched occurs.

In this embodiment, the lock link 30 connecting the lock lever 20 and the release lever 40 is configured to be hinged 33 so that the interlocking protrusion 32a of the lock link 30 is a foul lever. Even if the working end 51 of the 50 and the release lever 40 are interfered, the jam lever can be overcome by configuring the lock lever 20 to be independently switched.

In detail, in the present embodiment, the lock link 30 includes a first link member 31 having one end hinged to the lock lever 20 and a second linking protrusion 32a formed at one end thereof. It is comprised so that the link member 32 may be dualized, and the other end of these 1st link member 31 and the 2nd link member 32 is hinged 33, and it is comprised so that folding is possible.

Then, a stop member is provided between the first link member 31 and the second link member 32 which are bound to each of the hinges 33, and the first link member 31 and the second link member which are bound to the hinge 33 are provided. It is comprised so that (32) will always have elastic development tendency.

Referring to the drawings, in this embodiment, the torsion spring 34 is adopted as the finger member, and one end 34a of the torsion spring 34 is fixed to the first link member 31 and the other end 34b. Is attached to the second link member 32, so that the first link member 31 and the second link member 32, which are bound to the hinge 33, have elastic propensity.

With this configuration, the interlocking projection 32a of the lock link 30 is operated by the release lever 40 and the foul lever 50 by the simultaneous switching of the lock lever 20 and the release lever 40. Even if physically constrained, the independent switching of the lock lever 20 is realized by hinge folding of the first link member 31 and the second link member 32 as shown in FIG. Can be.

That is, after the independent switching of the lock lever 20 is implemented by the hinge folding of the lock link 30, the interlocking protrusion 32a formed on the lock link 30 is applied to the working end 51 of the foul lever 50. By the release (restraint) by the sequential release, the jam is eliminated.

On the other hand, according to this embodiment, one end of the inner handle lever 60 is attached to one end of the release lever 40, so that the release lever 40 is interlocked by the switching of the inner handle lever 60 is configured to switch do.

In addition, an interlocking member 70 is provided between an end of the adjacent inner handle lever 60 and an end of the lock lever 20, and the lock lever 20 is interlocked in one direction by an operation of the inner handle lever 60. Configured to be switched.

Therefore, when the user first switches the internal handle lever 60 by operating the internal handle (not shown) in the locked state as shown in FIG. 3 (a), the release lever 40 and the release lever 40 as shown in FIG. The lock lever 20 is simultaneously switched, and when the release lever 40 and the lock lever 20 are simultaneously switched in this way, the interlocking protrusion 32a of the lock link 30 acts on the action of the foul lever 50 ( A stuck state, that is, a jam state, is formed between the 51 and the release lever 40.

At this time, since the lock link 30 formed of the first link member 31 and the second link member 32 is hinged, the lock lever 20 is one-way switching regardless of the jam state. The door lock device for an automobile according to the example is in an unlocked state, that is, a release state.

When the user releases the inner handle in this state, as shown in FIG. 3 (c), the reverse switching of the release lever 40 is performed, and the interlocking protrusion 30a of the lock link 30 is jammed to release the release lever 40. It is located on the other side of the unlocking slot 42 formed in the. Displacement of the linkage projection 32a, the hinge-folded first link member 31 and the second link member 32 is made by the elastic expansion action.

Subsequently, when the user manipulates the inner handle second to switch the inner handle lever 60, the operating end 51 of the foul lever 50 is switched by the release lever 40 as shown in FIG. 3 (d). The lock is switched in conjunction with the interlocking projection 32a of the lock link 30 to release the restraint of the latch.

Finally, as shown in FIG. 3 (e), the interlocking protrusions 32a and the foul lever 50 of the release lever 40 and the lock link 30 are reversed and restored.

Therefore, in the door lock device 1 for a vehicle according to the present embodiment, when the inner handle lever 60 is primarily operated in a locked state, the lock lever 20 is switched to release the lock, and the inner handle lever 60 is closed. If you switch to the secondary has a so-called two-motion override function that opens the door.

When the two-motion override function is combined, it is not necessary to separately form a lock knob for unlocking the inside of the vehicle.

As described above, in the present invention, by providing an elastic flow structure between the lock lever and the lock link, even if the lock link is constrained (jam) at the operating end of the foul lever, the independent switching of the lock lever is implemented, jam phenomenon Overcoming.

If the jam is overcome in this way, after the lock lever is released and the lock lever is operated again, the hassle of re-operating the handle does not occur, and the linkage of the lock link is physically damaged by the action lever of the foul lever. The phenomenon can be prevented, and can have the advantage that the durability is improved.

In particular, the internal handle lever and the lock lever are configured to be interlocked with each other. When the internal handle lever is operated primarily, the lock lever is switched to release the lock, and when the internal handle lever is secondly switched, the door is opened. Two motion overrides are implemented.

When combined with the two-motion override function, it is not necessary to form a separate lock knob in the interior of the vehicle, it can have an effect that the additional costs due to the manufacture and installation of the lock knob can be significantly reduced.

Claims (2)

A lock lever axially mounted to the plate and switched left and right by an action of a key rod, a lock knob, or an actuator; A release lever which is installed on the plate and is switched by receiving an action force from the handle, and has a long freezing slot formed at one end thereof, and on one side of the freezing slot, a release lever at which an operating end of the foul lever is released; One end is coupled to the lock lever, the other end formed with the interlocking projection is configured to include a lock link is inserted into the release slot of the release lever, by the displacement of the interlocking protrusion formed on the lock link according to the switching of the lock lever, In the door latch for a vehicle configured to control the interlocking state of the release lever and the foul lever, The lock link is configured such that one end of the first link member is hinged to the lock lever, and one end is dualized by a second link member having an interlocking protrusion, and hinged to the other end of the first link member and the second link member. By constructing to be able to fold, by installing a stop member between the hinged first link member and the second link member, Even when the lock link interlocking projection is physically attached to and constrained by the actuating end of the release lever and the foul lever by the simultaneous switching of the lock lever and the release lever, the hinge of the first link member and the second link member Automobile door latch having a jam reliever structure, characterized in that configured to implement independent switching. The first link member of claim 1, wherein the finger member is a torsion spring, one end of the torsion spring is fixed to the first link member, and the other end is attached to the second link member. The door latch for a vehicle having a jam releasing structure, characterized in that the second link member is configured to have an elastic propensity to propel.

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