KR101755828B1

KR101755828B1 - A door latch link structure for preventing door opening

Info

Publication number: KR101755828B1
Application number: KR1020150116419A
Authority: KR
Inventors: 강보람; 허순호
Original assignee: 현대자동차주식회사
Priority date: 2015-08-19
Filing date: 2015-08-19
Publication date: 2017-07-07
Also published as: KR20170021996A

Abstract

The present invention relates to a door latch link structure, which comprises a claw (100) rotated to a locked position and a disengaged position locked in engagement with a striker fixed to a vehicle body, A link lever 120 linked with the pawl to unlock the pole 105, an outside lever 130 connected to actuate the link lever by operation of an outside door handle, The link lever 120 includes an inertial lever 110 at an upper end thereof and the inertial lever 110 is coupled to the outer lever 130 So that the door latch levers directly involved in the opening of the door are immediately released from the collision. It is possible to prevent the opening of the door by blocking the operation of the CLAW holding the strike, and it is possible to delete the balance weight and the backup lever, thereby reducing the weight and manufacturing cost, It has the effect of reducing the cost.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a door latch link structure,

The present invention relates to a door latch link structure for preventing a door from being opened. In particular, in order to reduce an occupant's injury due to a door opening due to a side collision of an automobile, To a door latch link structure for preventing a door from being opened.

Generally, when a door is opened in the event of a side collision of a vehicle, a passenger may be injured by a fatal second accident due to the door being thrown out through the opened door. In contrast, the structure has been improved so as to prevent the door from being opened in the event of a side collision of the vehicle.

The composition of the conventional door latch is such that the claw 1 mounted on the door is locked in engagement with a striker (not shown) fixed to the body at its insert 2, as schematically shown in Figures 1 and 2, When the mounting portion 31 of the outside lever 30 is pulled up through the cable by the operation of the outside handle, the outside link lever 20 rotatably mounted on the pivot shaft 32 rotates counterclockwise The engagement protrusion 12 on the upper side of the pawl lever is released from engagement with the lower end portion 3 of the claw 1 as the pawl lever 10 is rotated clockwise downwardly by pressing the cylindrical projection 11 downward, Is opened.

In order to prevent such a door from being opened, the vehicle receives a forward inertia force in the first place and a rearward inertia force in the second order by the internal reaction force. In the side collision, It is proposed to integrally mount a balance weight on the door open lever so as to prevent the door from being opened by the forward inertia force.

However, it is possible to prevent the opening of the door due to forward inertia force by integrally mounting the balance weight to the door open lever. However, there is a case where the door is opened due to the counterbalance of the balance weight due to the backward inertia force generated secondarily There was a problem.

In order to solve such a problem, the present applicant has proposed a door opening prevention device for an automobile by a patent of Korean Patent No. 10-1449265 (registered on October 1, 2014).

However, although the above structure can prevent door opening due to inertia, door opening may be caused by various other factors such as panel deformation in the event of a vehicle collision, thus requiring a more fundamental solution.

Domestic Registration No. 10-1449265 (Registered on October 1, 2014)

SUMMARY OF THE INVENTION It is an object of the present invention to provide an improved door for preventing a door from being opened when a side collision occurs in the conventional vehicle, And to provide a door latch link structure for preventing opening.

According to an aspect of the present invention, there is provided a door latch link structure for preventing a door from being opened, the door latch link structure including a claw rotatably engaged with a striker fixed to a vehicle body and rotated to a disengaged position, A link lever linked with the pawl to unlock the pawl, and an outside lever connected to operate the link lever by operation of an outside door handle A door latch link structure for preventing door opening, the link lever including an inertial lever at an upper end thereof, the inertial lever including a link lever interlocked with the outside lever by inertia at the time of collision, .

The inertial lever includes a main body connected to the upper end of the link lever by a hinge pin, and an operating portion having an end disposed inside the end portion cut at the center of the main body and rotatably connected to the main body by the hinge pin.

A hole is formed in the inner end of the operation portion and a hole is formed in the end portion of the body at a position opposed thereto. The weight member is provided so as to be elastically movable between the hole of the operation portion and the hole of the body end.

In addition, the weight member is normally inserted into the hole of the actuating portion to integrate the actuating portion with the main body, and when the vehicle collides with the side, the weight member moves to the hole of the end portion of the body by inertia to freely rotate about the hinge pin with respect to the main body, And the link of the pole is released.

It is preferable that the weight member is a pin-shaped member which is elastically inserted into the hole of the operation portion by a spring disposed in the hole of the body end portion and can be retracted into the hole by inertia.

The door latch link structure for preventing the door opening according to the present invention is capable of preventing the opening of the door by blocking the CLAW operation which engages the door strike by immediately separating the door latch levers directly involved in the opening of the door have.

In addition, the door latch link structure for preventing the door opening according to the present invention can eliminate the balance weight and the backup lever, thereby reducing weight and manufacturing cost, reducing the retesting schedule and costs due to door opening by vehicle type There is

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing an example of an apparatus for preventing an automotive door from opening during a conventional impact. FIG.
Fig. 2 is a rear view of Fig. 1; Fig.
3 is a schematic perspective view of a door latch link structure for preventing door opening according to the present invention applied to a link lever.
Fig. 4 is an operational state view showing the front and rear operation of the door latch link structure for preventing door opening according to the present invention shown in Fig. 3 when the vehicle collides. Fig.
5 is a schematic cross-sectional view showing the behavior of the weight in the inertial lever in the event of a vehicle collision of FIG. 4;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings illustrating embodiments of a door latch link structure for preventing door opening according to the present invention.

3, the door latch link structure for preventing door opening according to the present invention is rotatably mounted on a door and is rotated to a locked position where the door is locked by being engaged with a striker fixed to the vehicle body, (100) formed with a claw (101) formed therein, a claw (100) formed to engage with a lower end of the claw for holding the claw in a locked position and to be engaged with an engagement position for maintaining the locked state of the door, And an outward lever 130 for pivoting the pawl through the link lever 120 to unlock the pawl 105 by an operation of an outward door handle .

According to the present invention, the link lever 120 includes an inertial lever 110 at the upper end thereof, and the inertial lever 110 is inertially engaged with the engagement protrusion 106 of the pawl 105 and the claw And is linked with the pawl 105 to release the engagement.

That is, the inertial lever 110 is linked to actuate the cylindrical protrusion 107 of the pawl 105 in the link lever 120 interlocked with the outside lever 130 to release the engagement with the claw 100 .

The outer side lever 130 is rotated in the counterclockwise direction when the mounting portion 131 to which the cable is fixed (not shown in the drawing) is pulled upward in the operation of the outside handle, and the outside lever 130 The inertia lever 110 is pushed out of the pawl 105 so that the inertia lever 110 is pushed out of the pawl 105. As a result, The pawl 105 is rotated in the clockwise direction in the figure by pushing the cylindrical projection 107 formed downward. Whereby the engaging projection 106 at the upper end of the pawl 105 is disengaged at the lower end of the claw 100 and the door is opened.

The inertial lever 110 is configured such that the link with the pawl 105 is released due to inertia when the vehicle collides with a side so that the door is not originally opened.

4 and 5, the inertial lever 110 includes a main body 111 connected to the upper end of the link lever 120 by a hinge pin 113, And an operating portion 112 disposed at an inner side of an end portion of the center cut to form a groove and connected to the main body 111 by inertia so as to be pivotable by the hinge pin 113. [

A hole 117 is formed in an end portion of the main body at a position opposite to the hole 114 and a weight member 115 At its rear end is provided with a spring 116 as resilient means such that the weight member 115 moves elastically such that it is inserted into the hole 114 of the actuating portion 112 or placed in the hole 117 of the body end . The elastic means may be made of elastic rubber.

Typically, the weight member 115 is disposed in the hole 114 of the actuating portion 112 by elastic means of a spring 116 (FIG. 5 collision drawing). The operating lever 112 can be integrally held linearly with respect to the main body 111 so that the inertial lever is rotatably supported by the link lever 120 (interlocked with the rotation of the outer lever 130) And is linked to engage with the cylindrical projection 107 of the pawl to actuate the pawl when it rotates.

However, when an external impact, for example, a collision in the left direction in the drawing as indicated by an arrow in Fig. 4 occurs, the weight member 115 is moved by inertia in the hole 114 of the actuating part 112 And moves in the direction opposite to the collision direction to the holes 117 of the main body 111 (drawing in collision in Fig. 5).

At this time, the actuating part 112 rotates upward from the hinge pin 113 at the end of the main body 111. In this state, as the position of the hole 114 formed at the end of the actuating part is changed, Remains in a state of being trapped in the hole 117 of the main body 111 (drawing after collision in Fig. 5).

5, as the weight member 115 is held at the bore of the main body, as shown in the right-side view of Fig. 4, the operating portion 112 is maintained to be rotated in the upward direction, The pawl 120 can not be engaged with the cylindrical projection 107 formed on the pawl even if the pawl 120 rotates, so that the pawl can not be operated and the link is eventually released.

Therefore, the link lever 120 and the pawl 105 are disconnected from each other and the pawl can not be operated and the claws are kept in engagement with the striker, so that the impact on the side impact of the vehicle as well as the deformation of the panel The door is prevented from being opened. Therefore, the passenger is thrown out of the car due to the opening of the door during the conventional collision, so that the problem of secondary injury is no longer generated.

The present invention can be applied to the door latch link to prevent door opening even when the panel is deformed to protect the occupant in a side collision of the vehicle.

100; The claw 101:
105: Paul 106; Engaging projection
107; A projection 110; Inertia lever
111: main body 112:
114, 117: hole 115: weight member
116; Spring 120: link lever
130: Outside lever 131:
132:

Claims

A claw (100) rotated to a locked position and an unlocked position locked with a striker fixed to a vehicle body, a pawl (105) adapted to rotate between an engaged position and a unlocked position for holding the claw in a locked position, 105), a door latch link (120) coupled to the pawl for unlocking the door, a door latch link (120) for preventing door opening with an outward lever (130) connected to operate the link lever by operation of an outward door handle In the structure,
The link lever 120 includes an inertial lever 110 at an upper end thereof and the inertial lever 110 has a link lever 120 interlocked with the outboard lever 130 due to inertia at the time of collision, The link is released,
The inertial lever 110 includes a main body 111 connected to the upper end of the link lever 120 by a hinge pin 113 and an end disposed inside the end of the main body cut at the center thereof, And an operating part (112) rotatably connected to the main body (111).

delete

2. The apparatus according to claim 1, wherein a hole (114) is formed at an inner end of the operating part (112) and a hole (117) is formed at an end of the body at a position opposite thereto, Is provided so as to be able to elastically move between the hole (114) of the body (112) and the hole (117) of the body end portion.

The weight member according to claim 3, wherein the weight member is inserted into the hole (114) of the actuating part (112) so that the actuating part is integrated with the body, And the operating part freely rotates about the hinge pin 113 with respect to the main body so that the link between the inertial lever 110 and the pawl 105 is released.

The weight member according to claim 4, wherein the weight member is elastically inserted into the hole (114) of the operating portion (112) by a spring (116) disposed in a hole (117) Is a member in the form of a pin capable of retracting to the door (117).