JP2009208729A - Hood lock part structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hood lock part structure can enhance the pedestrian protective performance without reducing the deformation strength of a hood. <P>SOLUTION: A bend part 48 bent to a hood 16 side is formed on an intermediate part of a connection part 46 in a striker 40 in the connecting direction for connecting leg parts 44 to each other. The striker 40 is supported by the locking mechanism unit 30 with the bend part 48 as a supporting point when the striker is held by a locking mechanism unit 30 and subjected to the load downward of a vehicle. Thus, for example, when a collision body is collided with a front end side of the hood 16 while the striker 40 is held by the locking mechanism unit 30, the striker 40 is oscillated with the bend part 48 as the supporting point around the axis 46Y substantially in the vehicle longitudinal direction and around the axis 46X substantially in the vehicle width direction according to the deformation of the hood 16. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a hood lock portion structure for locking to a vehicle body side with a hood closed.

In the front part of the vehicle, a hood that covers the engine room and a hood lock part structure for locking the closed hood to the vehicle body side are provided (see, for example, Patent Document 1). It is required to secure the protection performance for the elderly.
JP 2007-30737 A

  However, if the deformation strength of the hood is reduced in order to improve pedestrian protection performance, other important performances required for the hood (closing performance, running noise performance (performance that reduces noise generation during running), It is difficult to ensure dent resistance and opening / closing durability.

  In view of the above facts, an object of the present invention is to obtain a hood lock portion structure that can improve pedestrian protection performance without reducing the deformation strength of the hood.

  The hood lock structure according to the first aspect of the present invention is provided on the vehicle body side, and is provided with a lock means provided for locking the hood to the vehicle body side. A pair of fixing portions fixed at a position, leg portions erected from the fixing portion toward the locking means, and the leg portions are connected to each other and the locking means is locked when the hood is closed. And a striker that is swingable about an axis in the front-rear direction of the vehicle in accordance with deformation of the hood when held by the locking means. And

  According to the hood lock portion structure of the present invention described in claim 1, the striker to which the lock means on the vehicle body side is locked is fixed so that the pair of fixing portions are arranged side by side in the vehicle width direction on the hood side when the vehicle is viewed from the front. Therefore, for example, when a colliding body collides with the front end side of the hood from the diagonally upper front side of the vehicle and a load of a predetermined value or more is input, the striker is tilted according to the deformation of the hood while being held by the locking means. In addition, the striker can swing about the axis in the vehicle front-rear direction in accordance with the deformation of the hood when held by the locking means. When a collision occurs at a position shifted outward in the width direction (left and right), the striker swings about an axis in the vehicle front-rear direction in accordance with the deformation of the hood. For this reason, deformation of the hood is performed smoothly.

  According to a second aspect of the present invention, there is provided the hood lock portion structure according to the first aspect, wherein the striker is rotated about an axis in the vehicle width direction in accordance with deformation of the hood when held by the lock means. It is possible to swing.

  According to the hood lock portion structure of the present invention as set forth in claim 2, the striker can swing about the axis in the vehicle width direction according to the deformation of the hood when held by the locking means. For example, when the colliding body collides with the front end side of the hood, the striker swings about the axis in the vehicle longitudinal direction and about the axis in the vehicle width direction according to the deformation of the hood. As a result, the hood is smoothly deformed.

  According to a third aspect of the present invention, there is provided the hood lock portion structure according to the first or second aspect, wherein the leg portion is inclined toward the front side of the hood toward the lower side of the hood. To do.

  According to the hood lock part structure of the present invention described in claim 3, since the leg part is inclined toward the front side of the hood toward the lower side of the hood, the collision body is, for example, the front end side of the hood from the diagonally upper front side of the vehicle. When a load of a predetermined value or more is input by colliding with the, the rotational moment to the rear rear side of the vehicle with the connecting portion of the striker as a fulcrum is generated, and the striker is stably tilted. As a result, the hood is smoothly deformed.

  The hood lock structure according to a fourth aspect of the present invention is the structure according to any one of the first to third aspects, wherein the connecting portion is intermediate in the connecting direction in which the legs are connected to each other. The striker is bent to the hood side, and the striker is supported by the lock means using the bent portion as a fulcrum when the striker is held by the lock means and receives a load on the vehicle lower side. It is characterized by that.

  According to the hood lock part structure of the present invention described in claim 4, the connecting part is formed with a bent part bent toward the hood at the intermediate part in the connecting direction for connecting the leg parts, When the load is held by the locking means and receives a load on the lower side of the vehicle, the bent portion is supported by the locking means as a fulcrum. In this case, the striker swings about the bent portion as a fulcrum according to the deformation of the hood.

  As described above, the hood lock structure according to the first aspect of the present invention has an excellent effect that the pedestrian protection performance can be improved without reducing the deformation strength of the hood.

  According to the hood lock part structure of the second aspect, when the collision body collides with the hood, the striker is swung about the axis in the vehicle longitudinal direction and the axis in the vehicle width direction according to the deformation of the hood. Thus, it has an excellent effect that the hood can be smoothly deformed.

  According to the hood lock part structure of the third aspect, when the colliding body collides with the front end side of the hood from the obliquely upward front side of the vehicle, a rotational moment is generated downward on the vehicle with the connecting part of the striker as a fulcrum. By tilting the striker stably, it has an excellent effect that the hood can be smoothly deformed.

  According to the hood lock part structure of the fourth aspect, there is an excellent effect that the pedestrian protection performance can be further improved without reducing the deformation strength of the hood while having a simple configuration.

(Configuration of the embodiment)
A hood lock structure according to an embodiment of the present invention will be described with reference to FIGS. In these drawings, an arrow FR appropriately shown indicates the vehicle front side, an arrow UP indicates the vehicle upper side, and an arrow W indicates the vehicle width direction. In the hood closed state, the hood front-rear direction and the vehicle front-rear direction are the same direction, and the hood vertical direction and the vehicle vertical direction are the same direction.

  As shown in FIG. 1, a radiator support upper 14 as a part of the vehicle body is disposed along the vehicle width direction at the front end portion of the engine room 12 in the front portion 10 </ b> A of the vehicle body 10. A lock mechanism portion 30 as a lock means is attached to the center portion in the vehicle width direction of the radiator support upper 14 which is a vehicle body skeleton member.

  Further, a hood 16 that can be rotated in the opening / closing direction (arrow X direction) with respect to the engine room 12 is disposed on the vehicle upper side of the engine room 12. FIG. 2 shows a state where the hood 16 is closed. As shown in FIG. 3, which is an enlarged sectional view taken along line 3-3 in FIG. 2, the hood 16 includes a hood outer panel 18. The hood outer panel 18 constitutes a hood outer plate that is the front side of the hood 16 (that is, the vehicle outer side, the upper part in the closed state). Further, the hood 16 includes a hood inner panel 20 that is disposed at a predetermined distance from the hood outer panel 18 toward the hood lower side. The hood inner panel 20 constitutes a hood inner plate that is the back side of the hood 16 (that is, the vehicle inner side, the lower part in the closed state). The outer peripheral edge 18A of the hood outer panel 18 and the outer peripheral edge 20A of the hood inner panel 20 are coupled to each other by hemming.

  In FIG. 3, only the front end side of the hood 16 is shown, but the hood outer panel 18 has a curved shape that bulges upward on the vehicle body as a whole, and the hood inner panel 20 is also entirely The shape of the hood outer panel 18 is substantially the same.

  As shown in FIG. 1, a hinge 22 is disposed at the rear end portion of the hood 16 in the vehicle front-rear direction, so that the hood 16 can rotate around the axis of the hinge 22 in the vehicle width direction. It has become. Further, the hood inner panel 20 at the front end of the hood has a bulging portion 20B that bulges toward the back surface of the hood along the vehicle width direction. As shown in FIG. 3, a hood lock reinforcement (rigid reinforcement member) 24 constituting a part of the hood 16 is disposed between the bulging portion 20 </ b> B and the hood outer panel 18. The hood lock reinforcement 24 has a reverse hat shape in a side sectional view and extends along the hood width direction in order to ensure the rigidity of the hood front end corresponding to the hand-held portion when the hood 16 is opened and closed. The hood inner panel 20 and the hood outer panel 18 are joined.

  As shown in FIGS. 3 and 4 (a perspective view showing the hood lock portion 28), the striker 40 is fixed to the bottom plate portion 24A arranged on the hood inner panel 20 side in the hood lock reinforcement 24. In FIG. 4, the hood outer panel 18 and the hood lock reinforcement 24 are shown in a state where a part of the front end side of the hood outer panel 18 and a central region in the vehicle width direction are seen through (a two-dot chain line). Some of them are shown. As shown in FIGS. 3 and 4, the striker 40 can be latched with a latch 32 in the lock mechanism 30. That is, the lock mechanism portion 30 and the striker 40 constitute a hood lock portion 28 that locks to the vehicle body 10 (see FIG. 3) with the hood 16 closed.

  The lock mechanism portion 30 is provided for locking the hood 16 to the vehicle body 10 (see FIG. 3) side, and includes a plate-like base body 34 arranged with the plate thickness direction as the vehicle width direction. The base body 34 is attached to the radiator support upper 14 (see FIG. 3) side via an attachment bracket (not shown). At the center in the width direction of the base body 34 (the center in the direction along the vehicle front-rear direction), there is a notch 36 that opens at the upper end of the base body 34 and that is substantially longitudinal along the vehicle vertical direction. 34 is formed penetrating in the thickness direction. The notch 36 is used for insertion of a lower end portion (a connecting portion 46 described later in detail) of the striker 40.

  A latch 32 (also referred to as “lock member”) is attached to the base body 34. The base end side of the latch 32 is supported by the base body 34 so as to be rotatable about an axis in the vehicle width direction. That is, the latch 32 includes a normal position (position shown in FIGS. 3 and 4) that is an arrangement position in a state in which the hood 16 is locked to the vehicle body 10 (see FIG. 3), and a retreat position that is retreated from the normal position. , And is normally arranged at a normal position by a biasing means (not shown). The free end side of the latch 32 is a locking portion, and when the latch 32 is disposed at the normal position with the hood 16 closed, the lower end portion of the striker 40 (a connecting portion 46 described in detail later). ) Is held so that the striker 40 does not come out upward. The lock mechanism unit 30 can move the latch 32 to the retracted position by a release mechanism (not shown).

  As shown in FIG. 4, the striker 40 is made of high-strength steel and has a round bar shape. The striker 40 is bent by a bending machine so that the hood 16 side is open when viewed from the front of the vehicle. A pair of left and right fixing portions 42 fixed side by side in the vehicle width direction on the side of the vehicle, a pair of left and right leg portions 44 respectively erected from the fixing portion 42 toward the lock mechanism portion 30 side, And includes a connecting portion 46 that connects the portions 44 to each other and that latches the latch 32 of the lock mechanism portion 30 when the hood 16 is closed.

  The fixing portion 42 of the striker 40 is bent from the upper end of the leg portion 44 and extends in a direction away from each other in the hood front-rear direction (the same direction as the vehicle front-rear direction when the hood 16 is closed). The fixing portion 42 is welded to the upper surface side of the bottom plate portion 24A of the hood lock reinforcement 24. Moreover, in this embodiment, the edge part by the side of the leg part 44 in a pair of fixing | fixed part 42 has aligned the position of the hood front-back direction (the same direction as the vehicle front-back direction in the closed state of the hood 16). The pair of left and right leg portions 44 are parallel to each other and are inclined toward the front side of the hood toward the lower side of the hood.

  Here, an angle θ1 formed by the axial line 44L of the leg 44 shown in FIG. 3 and an imaginary straight line L1 hanging from the upper end of the leg 44 to the hood lower side (in other words, the striker shown in FIG. 3). The angle formed by the inclination direction line of the leg portion 44 and the hood vertical direction line in a state in which the coupling portion 46 of the forty and the notch portion 36 of the lock mechanism portion 30 mesh with each other is 45 ° ≦ θ1 ≦ 80 °. It is preferable to set as follows. As a result, the position where the connecting portion 46 of the striker 40 meshes with the cutout portion 36 of the lock mechanism portion 30 is offset from the upper end portion of the leg portion 44 toward the vehicle front side.

  As shown in FIG. 4, the connecting portion 46 is formed with a bent portion 48 bent toward the hood 16 at an intermediate portion (substantially central portion in the present embodiment) in the connecting direction for connecting the leg portions 44 to each other. Yes. That is, the shape of the striker 40 is inverted M-shaped (inverted V-shaped if only the connecting portion 46 is viewed) when viewed from the front of the vehicle when the hood 16 is closed, and is supported on the lock mechanism 30 side. Both sides of the bent portion 48 that are engaged (engaged) are inclined so as to incline toward the lower side of the hood toward the outer side in the hood width direction. With such a shape, the striker 40 is supported by the lock mechanism portion 30 in a scale-like manner using the bent portion 48 as a fulcrum when the striker 40 is held by the lock mechanism portion 30 and receives a load on the vehicle lower side. ing. Here, the inclination angle θ2 of the connecting portion 46 with respect to the virtual straight line L2 connecting the lower ends of the leg portions 44 is preferably set to satisfy 5 ° ≦ θ2 ≦ 15 °.

  The striker 40 having such a structure is capable of swinging around an axis (swing shaft) 46Y in a substantially vehicle front-rear direction in accordance with deformation of the hood 16 when held by the lock mechanism 30 (in other words, the vehicle It can be turned on a virtual plane including the vertical direction and the vehicle width direction) and can swing about an axis line (swing axis) 46X in a substantially vehicle width direction (in other words, a virtual including the vehicle vertical direction and the vehicle front-rear direction). The surface is free to rotate (pivotable). Here, supplementing the swing around the axis 46 </ b> Y in the substantially vehicle front-rear direction, the connecting portion 46 is bent as described above, so that the striker 40 is substantially in the axis in the vehicle front-rear direction according to the deformation of the hood 16. Even when rocking about 46Y, the resistance of the latch 32 of the lock mechanism 30 to the connecting portion 46 can be suppressed.

(Operation and effect of the embodiment)
Next, the operation and effect of the above embodiment will be described.

  As shown in FIG. 4, the striker 40 to which the latch 32 of the lock mechanism portion 30 is locked has a pair of fixing portions 42 fixed to the hood 16 side by side in the vehicle width direction when viewed from the front of the vehicle. As shown in FIG. 5, when the collision body 50 collides with the front end side of the hood 16 from the diagonally upper front side of the vehicle (in the direction of arrow A) and a load of a predetermined value or more is input, the striker 40 is It is tilted according to the deformation of the hood 16 while being held at 30. The two-dot chain line striker 40 indicates the striker position in the state before the collision.

  Here, as shown in FIG. 4, the connecting portion 46 of the striker 40 is formed with a bent portion 48 bent toward the hood 16 at the intermediate portion in the connecting direction for connecting the leg portions 44 to each other. 40 is supported by the lock mechanism 30 using the bent portion 48 as a fulcrum when it is held by the lock mechanism 30 and receives a load on the vehicle lower side. Therefore, for example, when the collision body 50 shown in FIG. 3 collides with the front end side of the hood 16 in a state where the striker 40 is held by the lock mechanism portion 30, the structure shown in FIG. In response to the deformation of the hood 16, the striker 40 swings around the axis 46 </ b> Y (see FIG. 4) in the vehicle front-rear direction and the axis 46 </ b> X (see FIG. 4) in the vehicle width direction with the bent portion 48 as a fulcrum.

  In the present embodiment, as shown in FIG. 3, the leg portion 44 is inclined toward the hood front side toward the hood lower side, so that the collision body 50 is inclined obliquely from the upper front side of the vehicle (in the direction of arrow A). ) When a load of a predetermined value or more is input by colliding with the front end side of the hood 16, a rotational moment M is generated in the rear lower side of the vehicle with the connecting portion 46 of the striker 40 as a fulcrum, as shown in FIG. 5. In addition, the striker 40 stably swings to the lower rear side of the vehicle about the axis 46X in the vehicle width direction. As a result, the hood 16 is smoothly deformed.

  As described above, the striker 40 shown in FIG. 4 is swingable about the axis 46Y in the vehicle front-rear direction according to the deformation of the hood 16 while being held by the lock mechanism 30. For example, as shown in FIG. 6, when the collision body 50 collides with a position shifted from the vehicle width direction center position in the hood 16 to the vehicle width direction outer side (other than the vehicle center), according to the deformation of the hood 16. The striker 40 swings about an axis 46Y in the substantially vehicle longitudinal direction. For this reason, also in such a case, the deformation | transformation of the food | hood 16 is performed smoothly.

  As described above, according to the hood lock portion structure according to this embodiment, the pedestrian protection performance can be improved without reducing the deformation strength of the hood 16. As a result, pedestrian protection performance required for the hood 16, closing performance, running noise performance (performance that reduces the occurrence of unusual noise during running), anti-dent performance, and switching durability performance, etc. Multiple performances can be ensured.

  In addition, if the deformation strength of the hood (hood rigidity) is reduced to ensure pedestrian protection performance, the hood will bend and load even if it is pushed down statically with the hood placed on the vehicle body when the hood is closed. In general, the hood is difficult to close (deterioration of the closing performance). If the hood is difficult to close, the load (static closing force) that pushes down against the hood more statically must be increased. If such a load exceeds the dent resistance of the hood outer panel (outer plate), The hood outer panel will be recessed. In order to reduce the occurrence of noise due to the relative movement of the latch and striker when the hood is closed, the hood side is locked in the fully retracted state. The latch and the striker must be firmly locked by the force acting on the upper side of the hood. However, if such a configuration is used, generally the load that is pushed down statically against the hood is increased to increase the load. It is important to communicate effectively. However, if the deformation strength of the hood is reduced, the load cannot be transmitted effectively, so it is difficult to apply a configuration that locks the hood with the hood side fully retracted to the vehicle body, reducing the generation of abnormal noise during travel. Difficult to do. As described above, when the deformation strength of the hood is lowered, it is difficult to ensure various performances required for the hood. However, according to the hood lock portion structure according to this embodiment, the deformation strength of the hood 16 is not reduced. Since it is good, such problems can be solved.

(Supplementary explanation of the embodiment)
In the above embodiment, as shown in FIG. 4, the ends of the pair of fixing portions 42 on the leg 44 side are positioned in the hood front-rear direction (the same direction as the vehicle front-rear direction when the hood 16 is closed). For example, even if the leg-side ends of the pair of fixed portions are slightly displaced in the position in the hood front-rear direction, the pair of fixed portions are viewed in front of the vehicle (vehicle Any configuration may be used as long as it is arranged in the vehicle width direction (viewed from the front).

  In the above-described embodiment, the striker 40 is swingable about the axis 46 </ b> Y in the vehicle front-rear direction according to the deformation of the hood 16 while being held by the lock mechanism 30, and is the axis in the vehicle width direction. This configuration is preferable. For example, the striker can be swung about an axis in the front-rear direction of the vehicle in accordance with deformation of the hood while being held by the locking means. Further, it may be configured such that it can be tilted stepwise in the hood front-rear direction.

  Furthermore, in the said embodiment, the leg part 44 inclines to the food | hood front side toward the food | hood downward direction, and such a structure is preferable, but a leg part is directed toward the food | hood downward | lower direction (without inclining), for example. ) It may be a leg that is drooped.

  Furthermore, in the above embodiment, the connecting portion 46 is formed with a bent portion 48 bent toward the hood 16 at an intermediate portion in the connecting direction for connecting the leg portions 44, and the striker 40 is connected to the lock mechanism portion 30. It is configured to be supported by the lock mechanism 30 with the bent portion 48 as a fulcrum when it is held and receives a load on the vehicle lower side, and such a configuration is preferable. A curved portion bent toward the hood is formed at the intermediate portion in the connecting direction for connecting the two, and the striker is locked by the curved portion as a fulcrum when it is held by the locking means and receives a load on the vehicle lower side. It may be configured to be supported by the means. Further, as another example, although processing is complicated, a spherical ball portion is formed at the intermediate portion in the connecting direction for connecting the leg portions in the connecting portion, and the striker is held by the locking means and on the vehicle lower side. When the load is applied, the ball portion may be used as a fulcrum to be supported by the lock means. That is, the connecting portion of the striker is such that the striker can swing about the axis in the vehicle longitudinal direction and the axis in the vehicle width direction according to the deformation of the hood while the striker is held by the locking means. It is good also as a connection part.

It is a perspective view which shows the vehicle front part to which the hood lock part structure which concerns on one Embodiment of this invention was applied (it shows in the state which the hood opened). It is a perspective view which shows the vehicle front part to which the hood lock part structure which concerns on one Embodiment of this invention was applied (it shows in the state in which the hood was closed). FIG. 3 is an enlarged cross-sectional view taken along line 3-3 in FIG. 2. It is a perspective view which shows the hood lock | rock part structure which concerns on one Embodiment of this invention. It is a sectional side view which shows the vehicle front part of the state which the collision body collided with the front-end side of the hood, and the hood deform | transformed. It is a perspective view which shows the displacement state of the striker at the time of a collision body colliding in the position which shifted | deviated to the vehicle width direction outer side in the vehicle width direction in a hood (it shows in the state which saw through the hood outer panel).

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Car body 16 Hood 28 Hood lock part 30 Lock mechanism part (locking means)
40 striker 42 fixed portion 44 leg portion 46 connecting portion 46X axis line in a substantially vehicle width direction 46Y axis line in a substantially vehicle front-rear direction 48 bent portion

Claims (4)

Locking means provided on the vehicle body side and used for locking the hood to the vehicle body side;
A pair of fixing portions fixed to the hood side by side in the vehicle width direction when viewed from the front of the vehicle, leg portions erected from the fixing portion toward the locking means side, and the leg portions are connected to each other. And a connecting portion that holds the locking means when the hood is closed, and in a state where the hood is held by the locking means, the hood swings about an axis in the longitudinal direction of the vehicle according to the deformation of the hood. A striker that can be moved,
A hood lock portion structure characterized by comprising:   2. The hood lock portion structure according to claim 1, wherein the striker is swingable about an axis in a substantially vehicle width direction in accordance with deformation of the hood when held by the lock means.   The hood lock part structure according to claim 1, wherein the leg part is inclined toward the front side of the hood toward the lower side of the hood.   The connecting portion is formed with a bent portion bent toward the hood at an intermediate portion in the connecting direction for connecting the legs, and the striker is held by the locking means and is loaded on the vehicle lower side. The hood lock part structure according to any one of claims 1 to 3, wherein the hood lock part structure is supported by the locking means using the bent part as a fulcrum when receiving the fulcrum.

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