KR100387882B1 - A Structure of Hood Ratch in Vehicle - Google Patents

Abstract

The present invention relates to a hood latch structure of a motor vehicle.

This is rotated by the striker 101 of the hood running along the guide groove of the latch base plate fixed to the vehicle body and hangs the pawl 20 supported by the elastic spring 42 and the engaging piece of the pawl 20. In the hood latch structure of a motor vehicle having a latch 30 supported by an elastic spring 44 and preventing the pawl 20 from rotating in the opposite direction, the guide groove 12 of the latch base plate 10 is provided. Has a configuration extending inward from the striker position when the hood is in the closed state.

According to this, the guide groove of the latch base plate is formed deeper and the striker of the hood can continue to the inner end of the guide groove in the event of the impact force caused by the collision with the pedestrian, so as to absorb the impact force to the maximum and make the pedestrian safe Has a protective effect.

Description

A structure of hood latch in vehicle

The present invention relates to a hood latch of an automobile, and more particularly, to form a deeper guide groove of the latch base plate, and in the event of an impact force caused by a collision with a pedestrian, the striker of the hood can continue to the inner end of the guide groove. The present invention relates to a hood latch structure of a vehicle that is capable of absorbing the maximum impact force to protect pedestrians more safely.

In general, a car has a hood that protects the engine room and also provides sound insulation for engine noise. The hood is pivotally mounted to the cowl top outer via a hinge to keep it closed and normally close to the driver. It is connected to a button or a rotatable lever mounted on a wire and has a structure in which the locking is released by a wire pulled according to the operation of the button or the lever.

1A and 1B schematically illustrate a hood latch structure of a vehicle according to the related art, and have a latch base plate 110 fixed to a vehicle body of the vehicle by a bolt member or the like. The latch base plate 110 is formed with a guide groove 112 for guiding the striker 101 fixed to the inner panel of the hood to proceed, and also includes a hinge pin 114 mounted to the latch base plate 110. It has a pawl 102 and a latch 130 which rotate about 116 to operate the striker 101 to be detachable from the guide groove 112.

To this end, the pawl 120 is supported by the elastic spring 142 to receive the elastic restoring force in the counterclockwise direction relative to the hinge pin 114 in the drawing and the latch 130 is hinge pin 116 It is supported by the elastic spring 144 to receive the elastic restoring force in the clockwise direction based on the reference, and forming a concave engaging groove 122 in one end of the pole 120, except for the elastic spring 144 When no external force is applied, the counterclockwise extension 124 with respect to the locking groove 122 is in a position away from the guide groove 112 and the other extension 126 is positioned in the guide groove 112. The pawl 120 is supported by a stopper (not shown). In addition, when the pawl 120 is rotated clockwise around the hinge pin 116 by the striker 101, the pawl 120 is engaged with the extension part 126 of the pawl 120 so as to receive another external force. As long as this does not work, the locking step 132 is formed to maintain the locking state. In addition, when the striker 101 moves out of the locking groove 122 of the pawl 120 and rises by an elastic spring not shown, the hood is kept in a slightly open state so that the driver may open the hood by mistake while driving. It has an auxiliary latch (not shown), which is a kind of safety device that prevents obstruction of view.

The conventional hood latch having such a structure is behaved by the opening and closing operation of the hood, and when the hood is opened, the hood latch operates from the state of FIG. 1A to the state of FIG. 1B and the hood of the state of FIG. 1B when the hood is closed. It works.

That is, when the hood latch is in the state of FIG. 1A, when the hood is closed and the striker 101 enters through the guide groove 112 of the hood base panel 110, the striker 101 is caught by the pawl 120. The rod 120 is rotated in the clockwise direction of the drawing while the pole 120 receives the rotational force and overcomes the elastic repulsion force of the elastic spring 142, thereby extending the extension portion 126 to the latching jaw 132 of the latch 130. 1) is converted into the state of FIG. 1B, and when the latch 130 is rotated clockwise by a wire not shown when the hood latch is in the state of FIG. 1B, the latch 130 of the latch 130 The extension 126 of the pole 120 is pulled out, whereby the pole 120 rotates counterclockwise to change to the state of FIG. 1A.

However, such a conventional hood latch structure has a problem that the hood is not greatly deformed when the car and the pedestrian collide with the front, while the pedestrian is severely injured by the impact. This is because it is required to have the durability of and the rigidity is set large, which prevents the hood latch from being easily deformed by a large impact force. That is, when the pedestrian hits the upper surface of the hood, the impact force is transmitted to the hood latch through the striker fixed to the hood, but the components and the striker forming the hood latch are not significantly deformed and the outer panel and inner panel forming the hood Since only the shock absorbed by the deformation, a relatively large impact was given to the pedestrian.

Of course, there is a method to more securely protect pedestrians by maximizing the amount of deformation by forming a larger space between the outer panel and the inner panel, which is the part on which the scriber is mounted, but in practice, such a method is designed and layout of a vehicle. Due to the nature of the had a certain limit.

The present invention has been made to solve such a conventional problem, the object of which is to absorb the maximum impact force on the hood by collision with the pedestrian while maintaining the space between the outer panel and the inner panel of the hood. The present invention provides a hood latch structure for a vehicle.

Figure 1a is a block diagram showing a case in which the hood latch according to the prior art in the open state;

Figure 1b is a block diagram showing a case in which the hood latch according to the prior art in the closed state;

Figure 2a is a block diagram showing a case where the hood latch according to the present invention the hood is open;

Figure 2b is a block diagram showing a case in which the hood latch according to the invention the hood is closed;

3 is an explanatory view showing a state in which the hood latch according to the present invention is deformed when the pedestrian collides with the hood;

Explanation of symbols on the main parts of the drawings

10: latch base plate 12: guide groove

14, 16: hinge pin 18: safety bracket

20: Paul 22: hanging groove

24, 26: latching piece 30: latch

32: sliding guide surface 34: locking jaw

42, 44: elastic spring 101: striker

As a technical configuration for achieving the above object, the present invention, by the striker of the hood running along the guide groove of the latch base plate fixed to the vehicle body, the pawl supported by the elastic spring, and hooking the pawl In a hood latch structure of an automobile which has its poles prevented from rotating in the opposite direction and having a latch supported by an elastic spring, the guide groove of the latch base plate extends inward of the striker position when the hood is closed. By providing a hood latch structure of the vehicle characterized in that.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2A and 2B are schematic views showing a hood latch structure of a vehicle according to the present invention, showing the pawls and latches when the hood is in the open and closed states.

The latch base plate 10 fixed to the vehicle body via a bolt member or the like forms a guide groove 12 for guiding the striker 101 by providing a traveling path of the striker 101 fixed to the hood. do. The inner end of the guide groove 12 is located further inward than the position of the striker 101 when the hood is closed, as shown in Fig. 2B, and thus the striker when the closing and opening action of the conventional hood is made. 101 does not enter to the inner end of the guide groove 12.

Hinge pins 14 and 16 are respectively mounted on the left and right sides of the guide groove 12 in the latch base plate 10, and the pawls 20 and the latch 30 are attached to the hinge pins 14 and 16. It is mounted to be rotatable. Each of these poles 20 and latches 30 is supported by elastic springs 42 and 44, and the elastic springs 42 and 44 are provided with the poles 20 and the latches 30, respectively. It provides an elastic restoring force to restore the initial state by rotating in one direction about the hinge pins (14, 16). The direction in which these poles 20 and latches 30 are provided with an elastic restoring force to be rotated by the elastic springs 42 and 44 will be described later.

The pawl 20 forms a locking groove 22 having an outer side open at one end and concave inward, and the width of the locking groove 22 is slightly larger than the outer diameter of the striker 101, and the direction thereof is It is formed to be approximately equal to the radial direction to the hinge pin 14, and the depth thereof does not prevent the striker 101 fitted into the locking groove 22 from traveling along the guide groove 12 of the latch base plate 10. It should be formed to a degree. And, the position of the engaging groove 22 of the pole 20 is supported by the elastic spring 42 so as to reciprocate the state of Figures 2a and 2b, which is the pole 20 by the elastic spring 42 This means that the elastic restoring force is provided to rotate counterclockwise, and in the initial state shown in FIG. 2A, the pawl 20 is no longer rotated counterclockwise by a stopper not shown or shown in FIG. 2. What is necessary is just to set the elastic spring 42 in an initial state not to shrink and expand. More specifically, in the initial state, the first locking piece 24, which is a portion near the latch 30, of the first locking piece 24 and the second locking piece 26 formed on the left and right sides of the locking groove 22 is guided. Located in the groove 12 to interfere with the striker 101 when the striker 101 proceeds, and the second catching piece 26 is separated from the guide groove 12 so that the striker 101 may move when the striker 101 proceeds. 101) do not interfere at all.

In addition, the safety bracket 18 is integrally fixed to the latch base plate 10. The safety bracket 18 protrudes a predetermined length to the latch base plate 10 so that one end of the pole 20 rotates. And the position of the safety bracket 18 is in the closed state, as shown in Fig. 2B, when the pole 20 is rotated to the latched position by the striker 101 by the striker 101. If the pawl 20 is rotated further than that, it is set to be in a position to block it. Therefore, when the hood is closed and opened in the normal state, no force is applied to the safety bracket 18. In addition, the safety bracket 18, the latch base plate 10 is to be separated from the latch base plate 10 when the force transmitted through the striker 101 is greater than the appropriate level.

The latch 30 has a sliding guide surface 32 and a locking projection 34 formed on the surface of the side portion adjacent to the pole 20 in succession so that the first locking piece 24 of the pole 20 is hinge pin 14. ) While moving along the sliding guide surface 32 while being rotated about the bar, so that the locking jaw 34 may be caught, and the first locking piece 24 of the pawl 20 is the sliding guide surface of the latch 30. The sliding guide surface 32 of the latch 30 contacts the first catching piece 24 of the pawl 20 as it proceeds along 32 so that the latch 30 counterclockwise about the hinge pin 16. In this case, the elastic spring 44 that was supporting the latch 30 generates an elastic force in a direction to restore the latch 30. Therefore, when the pawl 20 continues to rotate and the first catching piece 24 reaches the catching jaw 34 of the latch 30, the pawl 20 is rotated by the first catching piece 24 of the pawl 20. The latch 30 was rotated instantaneously by the elastic spring 44 in the opposite direction, which caught the first catching piece 24 of the pawl 20 by the catching jaw 34 of the latch 30. (20) is prevented from rotating in the opposite direction.

According to the hood latch structure of the present invention having such a configuration, it normally operates in response to the closing and opening of the hood, and when the hood is closed, it is operated from Fig. 2A to Fig. 2B and when the hood is opened to Fig. 2B to Fig. 2A. This is similar to the state in which a conventional hood latch structure operates.

That is, when the hood latch is in the state of FIG. 2A and the hood is closed and the striker 101 enters through the guide groove 12 of the hood base panel 10, the striker 101 is caught by the pawl 20. The first locking piece 24 is latched by the latch 30 by being rotated in the clockwise direction while the pole 20 receives the rotational force, thereby overcoming the elastic repulsive force of the elastic spring 42. When the latch 30 is rotated in the clockwise direction by a wire not shown when the hood latch is in the state of FIG. 2B when the hood latch is in the state of FIG. 2B, the locking step 34 of the latch 30 is changed. ), The first catching piece 24 of the pawl 20 is pulled out, whereby the pawl 20 rotates counterclockwise to change to the state of FIG. 2A.

The hood latch structure of the present invention operates differently from the conventional hood latch structure when the pedestrian collides with the vehicle in front, and when the impact force caused by the collision is applied to the hood, the outer panel and the inner panel of the hood undergo plastic deformation. The impact force is transmitted to the striker 101, and the impact force transmitted to the striker 101 is transmitted to the pawl 20.

At this time, as shown in FIG. 2B, the pawl 20 is prevented from rotating in the clockwise direction by the safety bracket 18. The impact force transmitted to the pawl 20 by the striker 101 is a safety bracket. And is separated from the hood base panel 10 by the impact force thereof.

Since the safety bracket 18 which prevented the rotation of the pawl 20 is removed, the striker 101 is guide groove 12 of the latch base plate 10 as shown by the dashed line in FIG. Along the way to the inner end, and through this process the impact force is absorbed.

In addition, through the above process, the hood is substantially moved to the latch base plate 10, thereby achieving the same effect as forming a large space between the outer panel and the inner panel to maximize the amount of deformation. It will protect pedestrians more safely.

As described above, according to the hood latch structure of the vehicle according to the present invention, when the guide groove of the latch base plate is formed deeper and the impact force caused by the collision with the pedestrian is generated, the striker of the hood may continue to the inner end of the guide groove. By absorbing the impact force to the maximum, it has the effect of protecting the pedestrian more safely.

Claims (2)

The pawl 20 rotated by the striker 101 of the hood running along the guide groove 12 of the latch base plate 10 fixed to the vehicle body and supported by the elastic spring 42, and the pawl 20. In the hood latch structure of a motor vehicle having a latch 30 supported by an elastic spring 44 to prevent the pawl 20 from rotating in the opposite direction by hanging a locking piece of The guide groove 12 of the latch base plate 10 extends inward from the striker position when the hood is closed, and the safety bracket 18 is fixed to the latch base plate 10, and the safety bracket The position of the 18 is set in the rotation path of the pole 20 close to the position of the pole 20 corresponding to the hood closed state, and the fixed strength is generated when the pedestrian collides with the hood, so that the striker 101 and the pole 20 Hood latch structure of the vehicle, characterized in that it is set to be separated from the latch base plate (10) by the impact force transmitted through). delete