JP4402481B2 - Automobile hood seal structure - Google Patents

Description

  The present invention relates to a seal structure for an automobile hood.

  A space is formed between the rear end of the hood that covers the engine room of the automobile and the cowl top located at the lower end of the front window panel. This space is raised by a resin seal panel that is raised from the cowl top side. Shielded. The space is shielded by such a resin seal panel, so that hot air and odor in the engine room are prevented from entering the vehicle interior via the cowl top and foreign matter (dead leaves) accumulated in the space. , Snow, etc.) from entering the engine compartment.

  Since the seal panel is required to have a function of blocking both gas and solid as described above, a certain degree of rigidity is required as a whole, and elasticity at the tip is required to be in close contact with the other party. For this reason, conventionally, a rubber that abuts the lower surface of the hood is provided at the upper end of the resin seal panel raised from the cowl top.

If the resin seal panel is too rigid, the hood is difficult to move downward when a large downward load is applied to the hood during a vehicle collision, and the collision energy cannot be sufficiently absorbed. Therefore, the seal panel is formed into a shape that is easily deformed, and is easily deformed at the time of a vehicle collision to allow the hood to move downward (for example, Patent Document 1).
JP 2001-146177 A

  However, in such a conventional technique, although the resin seal panel is formed into a shape that is easily deformed, the seal panel is crushed between the hood and the cowl top at the time of a vehicle collision. Therefore, the reaction force cannot be completely eliminated. Therefore, it is desired to develop a seal structure that can further reduce the reaction force.

  The present invention has been made paying attention to such a conventional technique, and provides a seal structure for an automobile hood that can further reduce a reaction force at the time of a vehicle collision.

The invention according to claim 1 is an automobile hood seal structure that shields a space of a predetermined size formed between the rear end of the hood and the cowl top, and maintains the shape from the rear end of the hood toward the space. possible and distal rigid forms a seal body in a positional relationship not to interfere with the cowl top and the vertical direction, the tip or the cowl top tip of the seal body, the tip is elastically deformable to contact the other side A lip is provided.

  The invention according to claim 2 is characterized in that the seal body is provided with another lip whose tip contacts the hood.

  The invention according to claim 3 is characterized in that the seal body is formed of the same member as the lip, and the reinforcing structure is applied only to the seal body.

  The invention according to claim 4 is characterized in that the seal body or cowl top and the lip are two-color molded products.

According to a fifth aspect of the invention, the proximal end of the lip, the recesses formed on either one of the cowl top tip, the proximal end of the lip, that the structure in which either allowed other is fitted in the cowl top tip Features.

According to the first aspect of the present invention, since the distal end of the seal body having rigidity capable of maintaining the shape is in a positional relationship that does not interfere with the cowl top in the vertical direction, if a downward load is applied to the hood during a vehicle collision, Moves downward without generating a reaction force together with the seal body, and can sufficiently absorb the collision energy. The seal body and the cowl top are sealed by a lip.

  According to the invention described in claim 2, since the seal body is provided with another lip whose tip contacts the hood, the sealing performance between the seal body and the hood is also improved.

According to the invention described in claim 3, since the seal body is formed of the same member as the lip, the seal body and the lip can be easily formed integrally. Further, since the reinforcing structure is applied only to the seal body, the rigidity is high and the sealing performance is improved.

  According to the invention described in claim 4, since the seal body and the lip are formed by two-color molding, it is easy to manufacture even different materials.

According to the invention of claim 5, wherein the proximal end of the lip, the recesses formed on either one of the cowl top tip, the proximal end of the lip, is a structure in which fitted to the other of the cowl top tip Therefore, even after manufacturing separately, both can be combined. It is also possible to replace only the lip for repair or the like.

An object of the present invention is to provide a seal structure for an automobile hood capable of further reducing a reaction force at the time of a vehicle collision. An object of the automobile hood for shielding a space of a predetermined dimension formed between a rear end of the hood and a cowl top A seal structure having a rigidity capable of retaining a shape from the rear end of the hood toward the space and having a positional relationship in which the tip does not interfere with the cowl top in the vertical direction is formed. This is realized by providing an elastically deformable lip whose tip contacts the other side at the tip or the tip of the cowl top. Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected about the part which is common in each following embodiment, and the overlapping description is abbreviate | omitted.

  1 and 2 are diagrams showing a first embodiment. A rear opening hood 2 is disposed above the engine room 1. A cowl top 6 including a cowl top cover 4 and a cowl top panel 5 is formed at the lower end of the front window panel 3. An air introduction hole 7 is formed in the cowl top cover 4. A space S is formed between the rear end of the hood 2 and the cowl top 6.

  At the rear end of the hood 2, a seal body 8 (inverted L-shaped cross section) made of hard resin (for example, PP) is provided on the lower side. The seal body 8 has a claw portion 9 at the upper end, and this claw portion 9 is engaged with the hood 2. The tip (lower end) 10 of the seal body 8 is close to the front end of the cowl top cover 4, but is offset to the front side by D1.

  A lip 11 made of a soft resin (for example, TPO) is formed at the tip 10 of the seal body 8. The lip 11 is formed by two-color molding simultaneously with the seal body 8. The lip 11 is formed of a proximal end that is fixed to the distal end of the seal body 8 and a distal end that contacts the cowl top cover 4. The tip of the lip 11 is in contact with the upper surface of the cowl top cover 4 and completely blocks between the seal body 8 and the cowl top cover 4.

  Since the seal body 8 has a rigidity capable of maintaining its shape, even if snow or dead leaves accumulate in the space S, entry into the engine room 1 can be prevented. Further, since the airtight shielding is performed by the lip 11 made of the soft resin, it is possible to prevent hot air, odor, etc. in the engine room 1 from reaching the air introduction hole 7 of the cowl top cover 4.

  In a vehicle collision, when a downward load F is applied to the hood 2, the tip 10 of the seal body 8 is in a positional relationship that does not interfere with the cowl top cover 4 in the vertical direction. It can move downward without generating any reaction force and can sufficiently absorb the collision energy.

  FIG. 3 is a diagram showing a second embodiment. In the second embodiment, the seal body 12 is attached to the lower surface of the hood 2 with an adhesive 13. The seal body 12 extends obliquely rearward from the front end of the portion attached by the adhesive 13, and a lip 15 that contacts the cowl top cover 4 is formed at the front end 14. The tip 14 of the seal body 12 is offset to the front side of the cowl top cover 4 by D2.

  Therefore, according to the second embodiment, since the seal body 12 is extended obliquely rearward from the front end of the portion attached to the hood 2, the space S can be made wider.

  FIG. 4 is a diagram showing a third embodiment. The rear side of the portion of the seal body 16 attached to the hood 2 is slightly lifted from the hood 2, and another lip 17 is attached to that portion. The tip of the lip 17 is in contact with the hood 2 and more securely seals between the seal body 16 and the hood 2. The tip 18 of the seal body 16 is offset forward by D3 with respect to the cowl top 6, and a lip 19 is attached thereto.

  FIG. 5 is a diagram showing a fourth embodiment. In the fourth embodiment, the seal body 20 extends obliquely forward, and the tip 21 is positioned behind the front end of the cowl top cover 22 with an offset of D4. Further, the lip 23 has a recess 24 at the base end, and this recess 24 is engaged with the tip 21 of the seal body 20. A hollow portion 25 is formed at the tip of the lip 23 and is in contact with the cowl top cover 22. Depending on the front-rear positional relationship between the hood 2 and the cowl top cover 22, the tip 21 of the seal body 20 may be offset rearward as in this embodiment. Further, since the lip 23 is coupled using the recess 24, the lip 23 can be attached to the seal body 20 later or can be replaced. Instead of forming the recess 24 at the base end of the lip 23, a recess may be formed at the tip 21 of the seal body 20, and the base end of the lip 23 may be engaged with this recess.

  FIG. 6 is a diagram showing a fifth embodiment. In the fifth embodiment, the seal body 26 is attached to the hood 2 by a clip 27. The front end 28 of the seal body 26 is offset forward from the cowl top panel 5 by D5. A lip 29 that contacts the front surface of the cowl top panel 5 is attached to the tip 28 of the seal body 26.

  FIG. 7 is a diagram showing a sixth embodiment. In the sixth embodiment, the entire seal body 30 and lip 31 are molded from a soft resin. Then, only the portion corresponding to the seal body 30 was formed with ribs 32 as “reinforcing structures” to increase the rigidity. The boundary of the rib 32 corresponds to the tip 33, and the tip 33 is offset forward of the cowl top cover 4 by D6. Since the seal body 30 and the lip 31 are formed of the same material, the integral formation is easy.

  FIG. 8 is a diagram showing a seventh embodiment. In the seventh embodiment, the lip 34 is not attached to the seal body 35 but attached to the tip 37 of the cowl top cover 36. The front end 38 of the seal body 35 is bent rearward and is offset to the front side by D7 from the front end 37 of the cowl top cover 36. The tip of the lip 34 is in contact with the tip 38 of the seal body 35 to improve the hermetic sealing performance. Thus, the lip 34 is not necessarily attached to the seal body 35 side.

  FIG. 9 is a diagram showing an eighth embodiment. In the eighth embodiment, the seal main body 39 extends straight down, and its tip 40 is offset from the tip 37 of the cowl top cover 36 by D8. A recess 42 is formed at the base end of the lip 41, and the lip 41 is attached by fitting the recess 42 to the tip 37 of the cowl top cover 36. Instead of forming the recess 42 at the base end of the lip 41, a recess may be formed at the tip 37 of the cowl top cover 36, and the base end of the lip 41 may be engaged with this recess.

  In the above embodiment, the hood 2 having a rear opening structure is taken as an example, but a hood having a front opening structure may be used.

Sectional drawing which shows the seal structure which concerns on 1st Example of this invention. Sectional drawing which shows the state which the food | hood of FIG. 1 moved below. Sectional drawing which shows the seal structure which concerns on 2nd Example of this invention. Sectional drawing which shows the seal structure which concerns on 3rd Example of this invention. Sectional drawing which shows the seal structure which concerns on 4th Example of this invention. Sectional drawing which shows the seal structure which concerns on 5th Example of this invention. Sectional drawing which shows the seal structure which concerns on 6th Example of this invention. Sectional drawing which shows the seal structure which concerns on 7th Example of this invention. Sectional drawing which shows the seal structure which concerns on 8th Example of this invention.

Explanation of symbols

2 Hood 4, 22, 36 Cowl top cover 5 Cowl top panel 6 Cowl top 8, 12, 16, 20, 26, 30, 35, 39 Seal body 10, 14, 18, 21, 28, 33, 38, 40 Tip 11, 15, 19, 23, 29, 31, 34, 41 Lip S space

Claims (5)

An automotive hood seal structure that shields a space of a predetermined dimension formed between the rear end of the hood and the cowl top,
From the rear end of the hood toward the space, forming a seal body that has a rigidity capable of maintaining a shape and has a positional relationship that the tip does not interfere with the cowl top in the vertical direction;
Sealing structure for an automobile hood, wherein the tip or the cowl top tip of the seal body, the tip has an elastic deformable lip which contacts to the other side. The automotive hood seal structure according to claim 1,
A seal structure for an automobile hood, wherein the seal body is provided with another lip whose tip contacts the hood. The automotive hood seal structure according to claim 1 or 2,
A seal structure for an automobile hood, wherein the seal body is formed of the same member as the lip, and the reinforcing structure is applied only to the seal body. The automotive hood seal structure according to any one of claims 1 to 3,
A seal structure for an automobile hood, wherein the seal body or cowl top and the lip are two-color molded products. The automotive hood seal structure according to any one of claims 1 to 3,
Proximal end of the lip, the recesses formed on either one of the cowl top tip, the proximal end of the lip, the sealing structure for an automobile hood, which is a the other one to the fitted structure of the cowl top tip .

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