JP7027761B2 - Mounting structure of the latch mechanism in the vehicle - Google Patents

Description

The present invention relates to a mounting structure of a latch mechanism in a vehicle.

Some vehicles have a front-opening hood that opens and closes the front space of the vehicle body.
In this vehicle, a striker is provided near the front end of the hood, a latch mechanism is provided in the space in the front space of the vehicle facing the striker to engage and disengage with the striker, and the striker is engaged by the latch mechanism. The closed position where the hood closes the front space of the vehicle is maintained, and the hood can be opened to the open position by disengaging the engagement by the latch mechanism.
In a vehicle equipped with such a front opening type hood, when the impact load due to the head impactor is input near the front end of the hood, that is, near the latch mechanism, how to efficiently absorb the impact load. It is important to suppress the failure value.

Therefore, Patent Document 1 discloses that a shock absorbing mechanism is provided in a structure in which a latch mechanism (locking means) is attached to a member (radiator support upper) on the vehicle body side via a plate-shaped lock base.
The shock absorbing mechanism is formed through the lock base and locks the latch mechanism by inserting a long hole extending along the impact load input direction of the head impactor and fastening the long hole to a member on the vehicle body side. It consists of bolts that are attached to members on the vehicle body side via the base.
According to the mounting structure of such a latch mechanism, when an impact load of a predetermined value or more is applied to the vicinity of the front end of the hood by the head impactor, the latch mechanism is inserted along with the lock base along the elongated hole through the bolt. The impact load is absorbed by being guided downward.

Japanese Unexamined Patent Publication No. 2009-57708

However, in the above-mentioned conventional technique, sufficient strength is secured against a load repeatedly applied to the latch mechanism due to the opening / closing operation of the hood, and an impact load of a predetermined value or more is applied to the vicinity of the front end portion of the hood by the head impactor. When input, it is necessary to meet the two requirements that the latch mechanism is smoothly guided together with the lock base.
Therefore, it is necessary to strictly control the tightening torque of the bolt to perform the assembling work, which is disadvantageous in improving the efficiency of the assembling work of the latch mechanism.
The present invention has been made in view of the above circumstances, and is an advantageous latch mechanism in a vehicle for efficiently absorbing impact with respect to the input of impact load by the head impactor while improving the efficiency of the assembly work of the latch mechanism. It is intended to provide a mounting structure for.

In order to achieve the above object, the present invention provides a bracket on the upper bar in a vehicle provided with a latch mechanism in which the upper bar arranged in the front space of the vehicle is detachably coupled to the striker of the hood. The bracket has a protrusion that protrudes upward from the upper bar while being inclined in the front-rear direction of the vehicle, the latch mechanism is attached to the protrusion, and the protrusion is near the front end of the hood. When an impact load is input from above, a deformation inducing portion that proactively deforms and deforms the protruding portion downward is provided at another portion of the protruding portion, and the bracket is a vehicle front portion of the protruding portion. The front panel is provided with a front panel base attached to the front surface of the upper bar, and is located at the upper end of the front panel base and bends forward and upward of the vehicle to provide the deformation inducing portion. It is characterized by having a bent portion constituting the bent portion and a front panel tip portion that is inclined forward from the upper end of the bent portion and protrudes upward from the upper bar .
Further, the present invention is characterized in that the bent portion is located at substantially the same height as the upper surface of the upper bar.
Further, in the present invention, the bracket includes a rear panel constituting the vehicle rear portion of the protrusion, and the rear panel has a rear panel base attached to the rear surface of the upper bar and a front panel front portion. It has a rear panel front portion attached to the rear surface of the upper end thereof, and an inclined portion extending so as to connect the rear panel base portion and the rear panel front portion, and has the front panel front portion and the rear panel front portion. A closed cross-sectional structure is formed by the front portion and the upper surface of the upper bar, and the protruding portion is composed of the front panel front portion and the rear panel front portion that project upward from the upper bar to form the closed cross-section structure. It is characterized by being done.
Further, in the present invention, the front panel has a bead portion extending in the vertical direction, and a width changing portion whose width changes is provided at an intermediate portion in the extending direction of the bead portion, and the width change portion is provided. The portion is characterized in that it is provided in the bent portion.

According to the present invention, when an impact load is input from above near the front end of the hood by the head impactor, the impact load is applied from the hood to the protrusion or from the hood to the protrusion via the upper end of the latch mechanism. ..
In this case, since the protrusion is inclined to the front or the rear of the vehicle, the protrusion is more likely to be deformed downward as compared with other parts of the bracket, and the deformation of the protrusion makes shock absorption more efficient. It is well done and is advantageous in reducing the failure value.
Further, unlike the conventional technique, it is not necessary to strictly control the bolt tightening torque when assembling the latch mechanism, which is advantageous in improving the efficiency of the assembling work of the latch mechanism.
Further, according to the present invention , when an impact load is input from above to the vicinity of the front end portion of the hood by the head impactor, the protruding portion is deformed with the bent portion as a fulcrum, and the interference between the latch mechanism and the upper bar is suppressed. This is advantageous, and shock absorption is efficiently performed, which is more advantageous in reducing the failure value.
Further, according to the present invention , the front panel can be reliably deformed at the bent portion, which is more advantageous in suppressing the interference between the latch mechanism and the upper bar, the shock absorption is efficiently performed, and the obstacle value is reduced. It will be even more advantageous in reducing the amount.
Further, according to the present invention , since sufficient strength can be secured against a load repeatedly applied to the bracket via the latch mechanism due to the opening / closing operation of the hood, the durability of the bracket during the opening / closing operation of the hood can be ensured. It is advantageous in improving and suppressing the vibration of the hood.
Further, according to the present invention , it is advantageous in improving the durability of the bracket during the opening / closing operation of the hood and suppressing the vibration of the hood. Further, since the protruding portion is deformed more reliably with the bent portion as a fulcrum, the bending mode of the bracket can be stabilized, the impact absorption is efficiently performed, and it is more advantageous in reducing the failure value.

It is a perspective view which shows the structure of the front part of the vehicle to which the attachment structure of the latch mechanism is applied in the vehicle which concerns on embodiment, and shows the state which omitted the hood and the latch mechanism. It is an enlarged perspective view of the main part of the mounting structure of the latch mechanism in the vehicle which concerns on embodiment. It is a side sectional view of the main part of the mounting structure of the latch mechanism in the vehicle which concerns on embodiment. It is a perspective view of the bracket attached to the upper bar as seen from the front of the vehicle. It is a perspective view of the bracket attached to the upper bar as seen from the rear of the vehicle. It is a perspective view which looked at the front panel from the front of a vehicle. It is a perspective view which looked at the rear panel from the rear of a vehicle.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the following drawings, the reference numeral FR indicates the front of the vehicle, the reference numeral UP indicates the upper side of the vehicle, and the reference numeral HL indicates the width direction of the vehicle.
As shown in FIG. 1, the vehicle 10 has a vehicle front space 12 partitioned by a dash panel in front of the vehicle interior.
In the vehicle front space 12, an inverter is arranged when the vehicle 10 is an electric vehicle, and a radiator and an engine are arranged when the vehicle 10 uses an internal combustion engine as a drive source.
Left and right front side members 14 extending in the front-rear direction of the vehicle 10 are arranged on both sides of the vehicle front space 12 in the vehicle width direction.
An intermediate portion of the left and right lamp supports 16 extending in the vertical direction is connected to the front end of the front side member 14.
Further, the intermediate portions of the left and right lamp supports 16 are connected by a bumper beam 18 extending in the vehicle width direction.
Further, the left and right upper bar sides 20 extending in the front-rear direction of the vehicle 10 are arranged above the front side members 14.
The front ends of the left and right upper bar sides 20 and the upper ends of the left and right lamp supports 16 are connected by an upper bar 22 (front end upper bar 22) extending in the vehicle width direction.
Further, the lower ends of the left and right lamp supports 16 are connected by a lower cross member 24 extending in the vehicle width direction.

The vehicle front space 12 is covered with a front-opening hood 26 shown in FIG. 3 so as to be openable and closable, and the rear end of the hood 26 is swingably attached to the vehicle body side via a hinge (not shown). ..
The hood 26 includes a hood outer panel 2602 forming an outer surface of the vehicle body and a hood inner panel 2604 facing the vehicle front space 12.
A striker 28 that engages with and detaches from the latch mechanism 30 is attached to the hood inner panel 2604.

As shown in FIG. 2, the latch mechanism 30 includes, for example, a primary latch mechanism 32, a secondary latch mechanism 34, an unlock lever 36, and a holder 38 for accommodating them.
The primary latch mechanism 32 locks the hood 26 in a fully closed state in which the hood 26 covers the front space 12 by engaging with the striker 28, and unlocks the hood 26 so that the hood 26 can be opened. Is.
Further, the secondary latch mechanism 34 engages with the striker 28 to prevent the hood 26 from being fully opened when the lock of the primary latch mechanism 32 is released due to an erroneous operation from the vehicle interior during traveling.
The lock release lever 36 swings the secondary latch 3402 to the retracted position by being operated by a finger inserted from the front side of the hood 26 when the hood 26 is in the half-open position by an operation from the vehicle interior. It allows the hood 26 to swing to the fully open position.
As such a latch mechanism 30, various conventionally known configurations can be adopted.
The latch mechanism 30 is attached to the upper bar 22 via the bracket 40 in the front portion of the vehicle front space 12.

As shown in FIG. 3, the upper bar 22 is connected to the front end 2202 facing the front of the vehicle, the upper surface 2204 connected to the upper end of the front surface 2202 and facing upward to the vehicle, and connected to the rear end of the upper surface 2204 to face the rear of the vehicle. It has a rear surface 2206 and has a hat-shaped cross section.

As shown in FIGS. 2 and 3, the bracket 40 has a protrusion 42 that is inclined toward the front of the vehicle and projects upward from the upper bar 22, and a latch mechanism 30 is attached to the front surface of the protrusion 42. ..
Specifically, the bracket 40 includes a front panel 44 and a rear panel 46.

As shown in FIGS. 3, 4, and 6, the front panel 44 is located at the upper ends of the front panel base 4402 attached to the front surface 2202 of the upper bar 22 and the front panel base 4402, and faces forward and upward of the vehicle. It includes a bent portion 4406 that bends, and a front panel front portion 4404 that protrudes upward from the upper bar 22 while inclining forward from the upper end of the bent portion 4406.
The bent portion 4406 is located at substantially the same height as the upper surface 2204 of the upper bar 22.
On the front surface of the front panel 44, two bead portions 4408 extending vertically while projecting to the front of the vehicle are formed at intervals in the vehicle width direction.
The portion of the bead portion 4408 located at the front panel front portion 4404 is formed to be wider than the portion of the bead portion 4408 located at the front panel base portion 4402.
Therefore, a width changing portion 4410 in which the width of the bead portion 4408 changes is located in the middle portion of the bead portion 4408 in the extending direction, and the width changing portion 4410 is provided in the bent portion 4406. At this time, the width of the bead portion 4408 located at the front panel base portion 4402 is set so that the bead portion 4408 does not interfere with the latch mechanism 30 when the bracket 40 is deformed by an impact load applied from above as described later. good.

Two through holes 4412 are formed in the upper portion of one bead portion 4408 of the two bead portions 4408, and one through hole 4412 is formed in the upper portion of the other bead portion 4408, and the rear surface of each bead portion 4408 is formed. A weld nut (not shown) for mounting the latch mechanism 30 coaxially with the through hole 4412 is provided in each.

As shown in FIGS. 3 and 5, the rear panel 46 is located behind the vehicle of the front panel 44.
The rear panel 46 has a rear panel base 4602 attached to the upper bar 22, a rear panel front 4604 attached (joined) to the rear surface of the upper end of the front of the front panel front 4404, and a rear panel base 4602. It is provided with an inclined portion 4606 extending so as to connect the rear panel front portion 4604 and the rear panel front portion 4604.
As shown in FIGS. 5 and 7, the rear panel base 4602 is bonded to the lower surface 4602A which is located on both sides of the rear panel 46 in the width direction and is joined to the upper surface 2204 of the upper bar 22 and to the rear surface 2206 of the upper bar 22. It has a rear surface portion 4602B to be formed.
The inclined portion 4606 extends from the upper end of the rear surface portion 4602B toward the upper part of the rear surface of the front panel front portion 4404 between the lower surface portions 4602A on both sides, and is joined to the upper part of the rear surface of the front panel front portion 4404.
A plurality of bead portions 4608 connected to the upper portion of the rear surface of the front panel front portion 4404 are provided on the upper portion of the inclined portion 4606 at intervals in the vehicle width direction.
The rear panel front portion 4604 has a back surface portion 4604A located on both sides of the inclined portion 4606 in the vehicle width direction, and the back surface portion 4604A and the upper end of the rear panel front portion 4604 are joined to the rear surface of the front panel front portion 4404. ing.
Both sides of the inclined portion 4606 in the vehicle width direction are connected to the back surface portion 4604A and the lower surface portion 4602A by the side surface portions 4606A.

Therefore, as shown in FIG. 3, a closed cross-sectional structure is formed by the front panel 44, the rear panel 46, and the upper surface 2204 of the upper bar 22.
In detail, this closed cross-sectional structure has a triangular shape due to the front panel front portion 4404, the rear panel front portion 4604, the inclined portion 4606, and the upper surface 2204 of the upper bar 22.
The protruding portion 42 that is inclined forward of the vehicle and protrudes upward from the upper bar 22 protrudes upward from the upper bar 22 and forms a closed cross-sectional structure with the front panel front portion 4404, the rear panel front portion 4604, and the inclined portion. It is composed of 4606.
Here, as shown in FIGS. 3 and 4, the front panel base portion 4402 is fixed to the front surface 2202 of the upper bar 22, and the front panel front portion 4404 is inclined toward the front of the vehicle and above the upper bar 22. Since it is protruding, when an impact load is applied to the protruding portion 42 that is inclined forward of the vehicle and protrudes above the upper bar 22, the bent portion 4406 takes the initiative in other parts of the protruding portion 42. It constitutes a deformation inducing unit 48 that deforms.
At this time, by making the bent portion 4406 substantially the same height as the upper surface 2204 of the upper bar 22, the front panel 44 (that is, the bracket 40) can be reliably deformed by the bent portion 4406, and the latch mechanism 30 and the upper bar 22 can be reliably deformed. It is advantageous in suppressing the interference with.
In the present embodiment, as shown in FIGS. 4 and 6, since the width changing portion 4410 of the bead portion 4608 is located at the bent portion 4406, the bent portion 4406 is applied when an impact load is applied to the protruding portion 42. Is more easily deformed.
The deformation-inducing portion 48 may be configured by making a hole in the front panel 44, providing a thin-walled portion in the front panel 44, or the like, but as in the embodiment, a bead portion 4408 is provided and a bent portion is provided. When configured by providing the width changing portion 4410 in addition to the 4406, the bracket 40 is surely deformed by the bent portion 4406 while firmly supporting the latch mechanism 30 and increasing the durability of the structure supporting the latch mechanism 30. Can be done.

Further, as shown in FIGS. 2 to 5, a bracket 52 for a hood support rod extending so as to incline to the rear of the vehicle toward the upper side of the vehicle is provided on the rear surface of the inclined portion 4606, and the bracket 52 is provided with the bracket 52. A clip 54 for supporting the hood support rod 50 is provided at the upper end.
The clip 54 sandwiches and supports the intermediate portion of the hood support rod 50.
By providing such a bracket 52 on the bracket 40 for mounting the latch mechanism 30, the space occupied by the bracket 52 can be made compact.
Further, since the bracket 52 for the hood support rod extends diagonally to the rear of the vehicle, it is deformed when an impact load is applied from above, the impact is absorbed, and it is more advantageous in reducing the obstacle value. Become.

As shown in FIG. 2, the latch mechanism 30 has a mounting plate portion 3002 for mounting on the vehicle body, and each bolt N1 through which three bolt insertion holes provided in the mounting plate portion 3002 is inserted is a front panel 44. By being fastened to each weld nut, it is attached to the protruding portion 42 of the bracket 40.
In the present embodiment, as shown in FIG. 3, in the state where the latch mechanism 30 is attached to the protrusion 42, the position of the upper end of the latch mechanism 30 is lower than the upper end of the protrusion 42, but the upper end of the latch mechanism 30. The position of may be higher than the upper end of the protrusion 42.

Next, the action and effect will be described.
In the present embodiment, the bracket 40 has a protruding portion 42 that is inclined forward of the vehicle and projects upward from the upper bar 22, and a latch mechanism 30 is attached to the protruding portion 42.
Therefore, when an impact load is input from above near the front end portion of the hood 26 by the head impactor, the impact load is applied from the hood 26 to the protrusion 42 or to the protrusion 42 via the upper end of the latch mechanism 30. Join.
In this case, since the protruding portion 42 is inclined to the front of the vehicle, the protruding portion 42 is more likely to be deformed downward as compared with other parts of the bracket 40, and the deformation of the protruding portion 42 absorbs shock. It is done efficiently, which is advantageous in reducing the failure value.
Further, unlike the conventional technique, it is not necessary to strictly control the tightening torque of the bolt, which is advantageous in improving the efficiency of the assembling work of the latch mechanism 30.

Further, in the present embodiment, the front panel 44 is inclined from the upper end of the front panel base 4402 attached to the front surface 2202 of the upper bar 22 and the upper end of the front panel base 4402 to the front of the vehicle via the bent portion 4406. The front panel tip portion 4404 projecting upward from the bar 22 is provided, and the bent portion 4406 is located at substantially the same height as the upper surface 2204 of the upper bar 22.
Therefore, since the bending portion 4406 constitutes the deformation inducing portion 48 that deforms proactively to the other protruding portions 42, when an impact load is input from above to the vicinity of the front end portion of the hood 26 by the head impactor. The protruding portion 42 is deformed with the bent portion 4406 as a fulcrum, which is advantageous in suppressing the interference between the latch mechanism 30 and the upper bar 22, and the impact absorption is efficiently performed, which is more advantageous in reducing the obstacle value. Become.

Further, in the present embodiment, a closed cross-sectional structure is formed by the front panel front portion 4404, the rear panel front portion 4604, and the upper surface 2204 of the upper bar 22, and the protruding portion 42 projects upward from the upper bar 22 and has a closed cross section. Since it is composed of the front panel front portion 4404 and the rear panel front portion 4604 forming the structure, it is advantageous in increasing the strength of the bracket 40 and increasing the rigidity of the structure supporting the latch mechanism 30.
Therefore, since sufficient strength can be secured against a load repeatedly applied to the bracket 40 via the latch mechanism 30 as the hood 26 opens and closes, the durability of the bracket 40 during the opening and closing operation of the hood 26 is improved. This is advantageous in suppressing the vibration of the hood 26.

Further, in the present embodiment, since the bead portion 4408 extending in the vertical direction is provided on the front panel 44, it is more advantageous in increasing the strength of the bracket 40, and the durability of the bracket 40 during the opening / closing operation of the hood 26 or the like is achieved. It is more advantageous in improving the property and suppressing the vibration of the hood 26.
Further, since the width changing portion 4410 in which the width of the bead portion 4408 changes is provided in the bending portion 4406, when an impact load is input from above near the front end portion of the hood 26 by the head impactor, the bracket 40 or the bracket 40 is provided from the hood 26. The impact load applied to the protrusion 42 via the upper end of the latch mechanism 30 causes the protrusion 42 to deform more reliably with the bent portion 4406 as a fulcrum, so that the bending mode of the bracket 40 can be stabilized and the impact absorption is efficient. This is more advantageous in reducing the failure value.

The above-described embodiment is an example, and is not limited to the above-mentioned configuration.
In the present embodiment, the case where the protruding portion 42 is inclined to the front of the vehicle and protrudes above the upper bar 22 has been described.
However, it goes without saying that even when the protruding portion 42 is inclined to the rear of the vehicle and protrudes upward from the upper bar 22, the same effect as that of the present embodiment is exhibited.
Further, the position of the bent portion 4406 is not limited to substantially the same height as the upper surface of the upper bar 2204, and may be provided at a position shifted upward or downward from the upper surface of the upper bar 2204.
Further, in the present embodiment, the width of the bead portion 4408 located at the front panel base 4402 is smaller than the width of the bead portion 4408 located at the front panel front portion 4404, but the width is located at the front panel front portion 4404. The width of the bead portion 4408 may be the same as the width of the bead portion 4408 located at the front panel base portion 4402, and the width may be narrowed only at the position corresponding to the bent portion 4406.

10 Vehicle 12 Vehicle front space 22 Upper bar 2202 Front 2204 Top 2206 Rear 26 Hood 28 Striker 30 Latch mechanism 40 Bracket 42 Protruding 44 Front panel 4402 Front panel base 4404 Front panel front 4406 Bending 4408 Bead 4410 Width change 46 Rear panel 4602 Rear panel base 4604 Rear panel front 48 Deformation inducer

Claims (4)

In a vehicle equipped with a latch mechanism that detachably connects to the striker of the hood on the upper bar located in the front space of the vehicle.
A bracket is provided on the upper bar,
The bracket has a protrusion that protrudes upward from the upper bar while being inclined in the front-rear direction of the vehicle.
The latch mechanism is attached to the protrusion, and the latch mechanism is attached.
When an impact load is input to the protruding portion from above near the front end portion of the hood, a deformation inducing portion that proactively deforms and deforms the protruding portion downward is provided at another portion of the protruding portion.
The bracket comprises a front panel constituting the vehicle front portion of the protrusion.
The front panel includes a front panel base attached to the front surface of the upper bar, a bent portion located at the upper end of the front panel base and bent forward and upward of the vehicle to form the deformation-inducing portion, and the bent portion. It has a front panel tip portion that protrudes upward from the upper bar while inclining toward the front of the vehicle from the upper end portion of the portion.
The mounting structure of the latch mechanism in the vehicle characterized by this. The bent portion is located at substantially the same height as the upper surface of the upper bar.
The mounting structure of the latch mechanism in the vehicle according to claim 1 . The bracket comprises a rear panel constituting the vehicle rear portion of the protrusion.
The rear panel includes a rear panel base attached to the rear surface of the upper bar, a rear panel front portion attached to the rear surface of the upper end of the front panel front portion, a rear panel base portion, and a rear panel front portion. Has an incline extending to connect with and
A closed cross-sectional structure is formed by the front panel front portion, the rear panel front portion, and the upper surface of the upper bar.
The protruding portion is composed of the front panel front portion and the rear panel front portion that project upward from the upper bar to form the closed cross-sectional structure.
The mounting structure of the latch mechanism in the vehicle according to claim 1 or 2 , wherein the latch mechanism is attached. The front panel has a bead portion extending in the vertical direction.
A width changing portion whose width changes is provided in the middle portion of the bead portion in the extending direction.
The width changing portion is provided in the bent portion.
The mounting structure of the latch mechanism in the vehicle according to any one of claims 1 to 3 , wherein the latch mechanism is attached.

Images