JP5486635B2 - Automobile hood seal structure - Google Patents

Description

  The present invention relates to an automobile hood seal structure.

A conventional example of an automobile hood seal structure will be described. FIG. 10 is a cross-sectional view showing the hood seal structure, and FIG. 11 is a cross-sectional view showing an essential part thereof.
As shown in FIG. 10, a hood 110 that covers an engine room is provided on an automobile body (not shown) so as to be openable and closable. The hood 110 is a so-called front-opening type in which a rear end portion (right end portion in FIG. 10) is rotatably provided on the vehicle body via a hinge mechanism. A hood lock striker 121 corresponding to a hood lock device (not shown) provided on the vehicle body side is provided on the lower surface side of the hood 110. When the hood lock striker 121 is restrained by the hood lock device, the hood 110 is locked in the closed state. Further, there is a case where the restraint point P of the hood 110 by the hood lock striker 121 is disposed with a predetermined distance a with respect to the front end of the hood 110. Further, a radiator support cover 122 that covers a radiator support (not shown) provided on the vehicle body side is disposed between the grill 113 and the hood lock striker 121.

As shown in FIG. 11, when the hood 110 is in a closed state, a gap opening in the front of the vehicle (referred to as a “parting gap”) between the front end portion of the hood 110 and the grill 113 corresponding to the front end portion. ) 120 is formed. The parting gap 120 is provided with a hood seal 130 for measures such as appearance and wind noise. The hood seal 130 is formed in a long shape extending in the left-right direction of the vehicle (the front and back direction in FIG. 11) with a rubber-like elastic material. In the cross-sectional shape, the hood seal 130 has an attachment portion 131 attached to the upper surface of the grill 113 and a lip portion 132 that protrudes upward from the front end portion of the attachment portion 131 and curves backward. The lip 132 is in elastic contact with the lower surface of the closed hood 110.
In addition, as such a hood seal structure, there exist some which were described in patent document 1, 2, etc., for example.

Japanese Utility Model Publication No.58-255782 Japanese Utility Model Publication No. 63-105551

  According to the conventional automobile hood seal structure, when the vehicle is traveling (particularly at high speed), the lip 132 that receives the wind pressure of the traveling wind blown from the parting gap 120 (see arrow Y in FIG. 11) is pushed backward. Easy (refer to the two-dot chain line 132 in FIG. 11). As described above, when the lip portion 132 is pushed backward, the pressing force of the lip portion 132 against the hood 110 is reduced, and there is a possibility that vibration (vertical vibration) is caused to the hood 110. In particular, when the restraint point P of the hood 110 by the hood lock striker 121 is arranged with a predetermined distance a with respect to the front end of the hood 110 (see FIG. 10), the front portion of the hood 110 is at a high speed. The deformation | transformation which bends upwards arises and the hood 110 may become easier to vibrate.

  Further, as a measure for preventing vibration of the hood 110 during traveling of the vehicle, if the elastic reaction force of the lip portion 132 of the hood seal 130 is increased, the hood 110 is difficult to close or the hood 110 is stopped when the vehicle is stopped (still). Since the front part of the part is pushed up, the vertical width of the parting gap 120 between the grille 113 and the hood 110 (this width is referred to as “parting part width”) 120W (see FIG. 10) is widened and the appearance is deteriorated. It is not preferable because it causes problems such as

  Moreover, in the thing of the said patent document 1, the front-end | tip part of the lip | rip part of a hood seal is contacting in the point contact form in the cross section with respect to the rear side surface of the front-end part bent in the downward direction of the hood in the closed state of the hood. It is only (refer FIG. 2 of patent document 1). For this reason, it is difficult to expect the effect of suppressing the vibration of the hood during vehicle travel (particularly during high-speed travel).

  Moreover, in the thing of the said patent document 2, the hood seal | sticker which seals the clearance gap between a radiator core support and the hood which opposes the radiator core support is provided. However, since the gap between the radiator core support and the hood has a crank shape in section with respect to the parting gap at the front end of the hood, it is not a gap that opens directly in front of the vehicle (see Patent Document 2). (See FIGS. 1 and 3). Therefore, since the running wind blown from the parting gap hits the radiator core support and the wind pressure is weakened, the lip portion is not structured to use the wind pressure of the running wind. For this reason, it is difficult to expect the effect of suppressing the vibration of the hood during vehicle travel (particularly during high-speed travel).

  The problem to be solved by the present invention is that vibration of the hood during traveling (especially at high speed) can be achieved without increasing the reaction force of the hood seal (while maintaining the conventional reaction force) when the vehicle is stopped (still). An object of the present invention is to provide an automobile hood seal structure that can be suppressed.

According to a first aspect of the present invention, a lip portion in a hood seal that seals a gap (parting gap) that opens in front of the vehicle between a front end portion of a hood of an automobile and a vehicle body side member is a traveling wind blown from the parting gap when the vehicle travels. While receiving the wind pressure, a pressing force is applied to the other member side using the wind pressure. Thereby, the vibration of the hood at the time of vehicle travel can be suppressed. In addition, a contact portion that can contact each other is provided between the rear side of the lip portion and one member side, and the contact portion is a lip portion when receiving a wind pressure of traveling wind blown from a gap. The reversal is prevented by mutual contact.

In a second aspect based on the first aspect, the contact portion provided on the rear side of the lip portion of the hood seal is a rib portion protruding rearward from the base portion of the lip portion.

According to a third aspect, in the first or second aspect, the one member includes a portion that contacts the rear side of the rear end portion of the hood seal attachment portion.

In a fourth aspect based on the second aspect, the one member has a stepped shape corresponding to a concave portion formed in a stepped shape on the rear side of the attachment portion by the attachment portion and the rib portion of the hood seal. Convex part is provided.

1 is a perspective view showing a front portion of an automobile according to Embodiment 1. FIG. It is sectional drawing which shows a hood seal structure. It is sectional drawing which shows the principal part of a hood seal structure. It is a perspective view which shows a hood seal. It is sectional drawing which shows the hood seal structure at the time of high speed driving | running | working. It is sectional drawing which shows the hood seal structure which concerns on the example of a change. It is sectional drawing which shows the hood seal structure which concerns on the example of a change. 6 is a cross-sectional view showing a hood seal structure according to Embodiment 2. FIG. 6 is a cross-sectional view showing a hood seal structure according to Embodiment 3. FIG. It is sectional drawing which shows the hood seal structure which concerns on a prior art example. It is sectional drawing which shows the principal part of a hood seal structure.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

[Example 1]
A first embodiment of the present invention will be described. For convenience of explanation, the structure of the front portion of the automobile will be described, and then the hood seal structure will be described. 1 is a perspective view showing a front portion of an automobile, FIG. 2 is a cross-sectional view showing a hood seal structure, and FIG. 3 is a cross-sectional view showing a main part of the hood seal structure.
As shown in FIG. 1, a radiator grill (hereinafter abbreviated as “grill”) 13, a front bumper 14, a pair of left and right headlamps 15, etc. are provided on the front side of an engine room (not shown) formed on the body of the automobile. Is provided. The vehicle body is provided with a hood 10 that covers the engine room so as to be opened and closed. The hood 10 is a so-called front-opening type whose rear end portion (not shown) is rotatably provided on the vehicle body side via a hinge mechanism. In FIG. 1, arrow FR indicates the front of the vehicle, arrow RH indicates the right side of the vehicle, and arrow UPR indicates the upper side of the vehicle.

  As shown in FIG. 3, the grill 13 includes a main grill portion 13 a that forms the main body, an upper wall portion 13 b that extends from the upper end of the grill main portion 13 a toward the rear of the vehicle (rightward in FIG. 3), and an upper wall thereof. A stepped portion 13c that protrudes upward from the rear end portion of the portion 13b, and an overhang portion 13d that extends from the upper end portion of the stepped portion 13c to the rear of the vehicle (rightward in FIG. 3). Attaching pieces 13e arranged at a predetermined interval in the left-right direction of the vehicle protrude from the upper wall portion 13b toward the rear of the vehicle (rightward in FIG. 3). The attachment piece 13e is fastened to a member on the vehicle body side by a bolt 18. Further, a notch groove 19 corresponding to the head portion 18a of the bolt 18 is formed in the overhang portion 13d. The grill 13 corresponds to a “vehicle body side member” in the present specification.

  As shown in FIG. 2, a hood lock striker 21 corresponding to a hood lock device (not shown) provided on the vehicle body side is provided on the lower surface side of the hood 10. When the hood lock striker 21 is restrained by the hood lock device, the hood 10 is locked in the closed state. In addition, the restraint point P of the hood 10 by the hood lock striker 21 is disposed with a predetermined distance a from the front end of the hood 10. Further, a radiator support cover 22 that covers a radiator support (not shown) provided on the vehicle body side is disposed between the grill 13 and the hood lock striker 21.

  As shown in FIG. 3, the hood 10 includes an outer panel 11 that constitutes a design surface, and an inner panel 12 that supports the outer panel 11 from the back surface side. The front end portion of the outer panel 11 is gently curved downward. The outer peripheral end portion 11 a of the outer panel 11 and the outer peripheral end portion 12 a of the inner panel 12 are overlapped, and the end edge portion 11 b of the outer panel 11 protruding from the outer peripheral end of the inner panel 12 is the back side of the outer peripheral end portion 12 a of the inner panel 12. The panels 11 and 12 are joined together by being folded back into a polymer. The front end of the hood 10 in the closed state has a predetermined vertical width (this width is referred to as “parting width”) 20 W with respect to a corner portion formed by the grill main portion 13 a and the upper wall portion 13 b of the grill 13. Opposing with a parting gap 20 (see FIGS. 2 and 3). Further, the inner panel 12 includes a horizontal plate-like flat plate portion 12b extending in the left-right direction of the vehicle (the front and back direction in FIG. 3) at a position facing the rear half of the upper wall portion 13b of the grill 13. Between the front end portion of the inner panel 12 (which corresponds to the front side portion of the outer peripheral end portion 12a) and the flat plate portion 12b, a vehicle left-right direction (in FIG. 3) is located at a position facing the front half portion of the upper wall portion 13b of the grill 13. A concave curved portion 12c extending in the direction of the front and back of the paper is formed.

Next, the hood seal 30 disposed in the parting gap 20 for measures such as appearance and wind noise will be described. FIG. 4 is a perspective view showing the hood seal.
The hood seal 30 is formed in a long shape extending in the left-right direction of the vehicle with a rubber-like elastic material (see FIG. 1). As shown in FIG. 3, the hood seal 30 is an integrally molded product having a mounting portion 31, a lip portion 32, a rib portion 33, and a guide portion 34 in a cross-sectional shape. Hereinafter, each part 31-34 is demonstrated in order.

  The attachment portion 31 is formed in a strip shape. The attachment portion 31 is attached to the rear half of the upper wall portion 13b of the grill 13 by a clip 40. An appropriate number of clips 40 are arranged at predetermined intervals in the vehicle left-right direction (the front and back direction in FIG. 3). Further, the clip 40 is prevented from coming off by elastically engaging with a mounting hole (not shown) formed in the upper wall portion 13b of the grill 13. At the same time, the head portion 40a of the clip 40 presses the attachment portion 31 onto the upper wall portion 13b. At this time, the attachment portion 31 is brought into contact with the stepped portion 13c of the grill 13, whereby the attachment portion 31 is positioned in the vehicle front-rear direction (left-right direction in FIG. 3). The clip 40 corresponds to an “attachment member” in this specification.

  The lip portion 32 is formed in a circular arc shape that protrudes upward from the rear end portion of the attachment portion 31 and curves forward. The lip portion 32 is tilted when the central portion of the outer peripheral surface thereof is pushed down by a corner portion (reference numeral 12d) formed by the flat plate portion 12b and the concave curved portion 12c of the inner panel 12 when the hood 10 is closed. ing. Accordingly, when the height of the lip portion 32 is reduced, the lip portion 32 elastically contacts the hood 10, specifically the corner portion 12 d of the inner panel 12 (specifically, line contact (in the cross section)). At the same time, when the vehicle is stopped, a portion extending from the contact portion of the lip portion 32 to the hood 10 to the front of the vehicle (rightward in FIG. 3) is a change in the parting gap 20 generated when the vehicle travels. In this case, the free state of the lip portion 32 is indicated by a two-dot chain line 32 in FIG.

The rib portion 33 protrudes rearward from the base portion of the lip portion 32. The rib portion 33 is close to or abutted on the stepped portion 13c and / or the overhang portion 13d of the grill 13.
The guide portion 34 protrudes upward from the front end portion of the attachment portion 31 and is inclined rearward. The guide part 34 including the attachment part 31 is formed to have substantially the same height as the parting width 20W (see FIG. 2) of the parting gap 20. The guide part 34 conceals the head 40a of the clip 40. Thereby, the head 40 a of the clip 40 is not exposed to the front of the vehicle through the parting gap 20.

  In the above-described automobile hood seal structure, as shown in FIG. 3, when the hood 10 is closed when the vehicle is stopped (stopped), the hood seal 30 causes the front of the hood 10 and the grill 13 to move forward. The parting gap 20 that is open is sealed. At this time, the lip portion 32 of the hood seal 30 is in elastic contact with the hood 10 (specifically, the corner portion 12d of the inner panel 12) with a predetermined elastic reaction force. When the hood 10 is opened, the hood 10 is separated from the lip portion 32, whereby the lip portion 32 is elastically restored to a free state (see a two-dot chain line 32 in FIG. 3).

  When the vehicle travels with the hood 10 closed, the lip portion 32 of the hood seal 30 receives the wind pressure of the running wind (see arrow Y in FIG. 3) blown from the parting gap 20 and uses the wind pressure. A pressing force is applied to the hood 10 (specifically, the corner 12d of the inner panel 12). Thereby, the vibration of the hood 10 at the time of vehicle travel can be suppressed.

  Further, when the front portion of the hood 10 is deformed to bend upward during high speed traveling, the parting gap 20 is changed, that is, the parting width 20W (see FIG. 2) is enlarged. In such a case, the lip portion 32 (including the marginal portion 32a) of the hood seal 30 uses the wind pressure of the traveling wind blown from the parting gap 20, and the parting gap 20 (specifically, the parting width 20W (see FIG. 2). )) To follow the change and apply a pressing force to the hood 10 (specifically, the inner panel 12). FIG. 5 is a cross-sectional view showing the hood seal structure during high speed running. In FIG. 5, a two-dot chain line 10 indicates the hood 10 when the vehicle is stopped, and a two-dot chain line 32 (32a) indicates the lip portion 32 including the margin 32a of the hood seal 30 when the vehicle is stopped.

  At this time, since the lip portion 32 of the hood seal 30 is always in contact with the hood 10, the traveling wind does not rub through the hood 10 and the hood seal 30. Further, the faster the traveling speed, the greater the pressing force of the lip portion 32 of the hood seal 30 against the hood 10. Further, depending on the size of the parting width 20W (see FIG. 2), the lip portion 32 (specifically, the margin portion 32a) of the hood seal 30 has a flat plate portion 12b or a concave shape in addition to the corner portion 12d of the inner panel 12 of the hood 10. It contacts the curved portion 12c.

Further, when the front part of the hood 10 is elastically restored to its original shape when the vehicle is decelerated from the high speed traveling, the lip portion 32 of the hood seal 30 is changed when the parting gap 20 changes, that is, when the parting width 20W (see FIG. 2) decreases. 10 is tilted downward (see FIG. 3).
As described above, the lip portion 32 of the hood seal 30 can apply a pressing force to the hood 10 following the change in the parting gap 20 (increase / decrease in parting width 20W (see FIG. 2)) that occurs during vehicle travel. .

  According to the above-described automobile hood seal structure, the lip portion 32 in the hood seal 30 that seals the parting gap 20 that opens to the front of the vehicle between the front end portion of the automobile hood 10 and the grill 13 is provided in the parting gap 20 when the vehicle travels. The wind pressure of the running wind (see arrow Y in FIG. 3) blown from the air is received and a pressing force is applied to the hood 10 side using the wind pressure. Thereby, the vibration of the hood 10 at the time of vehicle travel can be suppressed.

In addition, unlike the case where the elastic reaction force of the lip portion 32 of the hood seal 30 is increased to prevent vibration of the hood 10 during traveling of the vehicle, the hood 10 is difficult to close due to the increase of the elastic reaction force of the lip portion 32, When the vehicle is stopped, the elastic reaction force of the lip portion 32 is increased, and the front part of the hood 10 is deformed so that the parting width 20W (see FIG. 2) between the grill 13 and the hood 10 is widened and the appearance is lost. Can improve the quality.
Further, since the driving wind (see arrow Y in FIG. 3) blown from the front of the vehicle through the parting gap 20 is properly received by the lip portion 32 of the hood seal 30, for example, unlike the hood seal in Patent Document 2, the driving The wind pressure of the wind can be used effectively, and the vibration of the hood 10 can be effectively suppressed when the vehicle is traveling (particularly during high-speed traveling).

  Further, the change in the parting gap 20 that occurs when the vehicle travels, that is, the parting width 20W (see FIG. 2), using the wind pressure of the traveling wind (see arrow Y in FIG. 3) that the lip portion 32 of the hood seal 30 blows from the parting gap 20. The pressing force is applied to the hood 10 side following the increase / decrease of the reference). Thereby, the vibration of the hood 10 in which the change of the parting gap 20 occurs when the vehicle travels can be suppressed. This is effective as a hood seal structure for an automobile in which a distance a (see FIG. 2) from the front end of the hood 10 to the restraint point P of the hood 10 is set large.

  Further, the margin portion 32a formed in the lip portion 32 of the hood seal 30 can always contact the hood 10 following the change of the parting gap 20 that occurs when the vehicle travels (see FIGS. 3 and 5).

  Further, when the wind pressure of the running wind (see arrow Y in FIG. 3) blown from the parting gap 20 during high-speed running increases, the lip portion 32 of the hood seal 30 receives the wind pressure, so that the lip portion 32 rolls backward in the vehicle. It is expected that the movement will be easy to reverse. However, when the rib portion 33 provided on the hood seal 30 abuts on the stepped portion 13c and / or the overhang portion 13d of the grill 13, the lip portion 32 can be prevented from being reversed. In addition, since the rib part 33 is provided as needed, it can also be abbreviate | omitted (refer FIG. 6).

  Moreover, the guide part 34 provided in the hood seal 30 can efficiently guide the traveling wind blown from the parting gap 20 to the lip part 32 when the vehicle is traveling (see arrow Y1 in FIG. 3). In the case of the present embodiment, a part of the traveling wind guided to the lip portion 32 by the guide portion 34 is swung in a bag path-like space portion 35 surrounded by the base portion of the lip portion 32, the attachment portion 31 and the guide portion 34. A vortex is formed (see arrow Y2 in FIG. 3). For this reason, traveling wind can be efficiently applied to the lip portion 32. Moreover, since the guide part 34 is provided as needed, it can also be abbreviate | omitted (refer FIG. 7).

  Further, the guide portion 34 of the hood seal 30 can conceal the clip 40 (specifically, the head 40a) for attaching the hood seal 30 to the grill 13. In addition, you may provide the cover part for exclusive use which conceals the clip 40 (specifically head 40a) separately from the guide part 34. FIG.

[Example 2]
A second embodiment of the present invention will be described. Since the present embodiment is obtained by changing a part of the first embodiment, the changed portion will be described, and redundant description will be omitted. FIG. 8 is a cross-sectional view showing the hood seal structure.
In the present embodiment, as shown in FIG. 8, the distal end portion of the guide portion 34 of the hood seal 30 is extended and connected to the base portion of the lip portion 32, thereby having a closed cross-sectional shape including the attachment portion 31 and the guide portion 34. A hollow cylinder portion 36 is formed. According to this configuration, the rigidity of the attachment portion 31 and the guide portion 34 of the hood seal 30 can be improved.

[Example 3]
A third embodiment of the present invention will be described. Since the present embodiment is obtained by changing a part of the first embodiment, the changed portion will be described, and redundant description will be omitted. FIG. 9 is a cross-sectional view showing the hood seal structure.
In the present embodiment, as shown in FIG. 9, a hood seal 30 (see FIG. 6) is attached to the hood 10 side, specifically, the lower surface of the flat plate portion 12 b of the inner panel 12, instead of the grill 13. At this time, with the hood 10 closed, the lip portion 32 of the hood seal 30 is elastically brought into contact with the upper surface of the upper wall portion 13b of the grill 13, for example, the corner portion 13j formed by the flat surface portion 13h and the inclined surface portion 13i. Is. Further, on the front end portion of the upper wall portion 13 b of the grill 13, traveling wind intrudes between the upper wall portion 13 b of the grill 13 and the margin portion 32 a of the lip portion 32 corresponding to the front end portion of the hood 10. A protrusion 13k is formed to prevent the above.

  The present invention is not limited to the above-described embodiments, and modifications can be made without departing from the gist of the present invention. For example, in the above embodiment, the grill 13 is illustrated as the vehicle body side member corresponding to the hood 10, but the front bumper 14, the headlamp 15, and the like may be used as the vehicle body side member corresponding to the hood 10. Further, the attachment portion 31 may be attached to the vehicle body side member such as the grill 13 or the hood 10 by arranging a double-sided tape, an adhesive, or the like in addition to the clip 40 partially or entirely. As long as the lip portion 32 is formed in a shape that receives the wind pressure of the running wind blown from the parting gap 20 when the vehicle is running and applies a pressing force to the other member side using the wind pressure, the inner portion of the hood 10 is used. Not only the corner portion 12d (see FIG. 3) of the panel 12 and the corner portion 13j (see FIG. 9) of the upper wall portion 13b of the grill 13, but a flat portion or other shape portion may be contacted.

10 Hood 13 Radiator grill (vehicle body side member)
20 Parting gap (gap)
30 Hood seal 32 Lip part 32a Margin part 33 Rib part 34 Guide part 36 Hollow cylinder part 40 Clip (attachment member)

Claims (3)

A hood seal that seals a gap that opens in front of the vehicle between the front end portion of the hood of the automobile and the vehicle body side member corresponding to the front end portion,
The hood seal mounting portion disposed on the vehicle body side member, and the rear end portion of the mounting portion toward the hood side are protruded to bend forward and lip elastically contacts the hood And
The lip portion is formed in a shape that receives the wind pressure of the running wind blown from the gap during vehicle running and applies a pressing force to the hood side using the wind pressure,
Between the rear side of the lip part and the vehicle body side member side , a contact part that can contact each other is provided,
The contact portion is configured to prevent reversal of the lip portion by mutual contact when receiving the wind pressure of traveling wind blown from the gap ,
A hood seal structure for an automobile , wherein the contact portion provided on the rear side of the lip portion of the hood seal is a rib portion protruding rearward from the base portion of the lip portion . The automobile hood seal structure according to claim 1,
The automobile body hood seal structure is characterized in that the vehicle body side member includes a portion that comes into contact with a rear side of a rear end portion of the hood seal attachment portion. The automobile hood seal structure according to claim 1 or 2 ,
The vehicle body side member includes a stepped convex portion corresponding to a concave portion formed stepwise on the rear side of the mounting portion by the mounting portion of the hood seal and the rib portion. Characteristic hood seal structure for automobiles.

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