JPH04283171A - Cowl louver top - Google Patents

Abstract

PURPOSE:To provide a cowl louver top which is reliably sealed to a windshield, absorbs vibration, and eliminates a fear of various noise being generated. CONSTITUTION:A skin layer 6 of a cowl louver top 1 is formed of a soft material, a core layer is formed of a rigid material, and a contact part 10 making contact with at least the windshield 11 is covered with the skin layer 6.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cowl louver top placed in front of a windshield of an automobile.

0002

2. Description of the Related Art Conventionally, as shown in FIG. 7, when introducing outside air into the interior of an automobile 21, a front lower part of a windshield 22 is used to prevent foreign objects such as snow, leaves, and dirt from entering the interior of the vehicle. A cowl louver top 23 is provided. The cowl louver top main body 23a has a left piece 24 and a right piece 25 that are formed symmetrically on the left and right sides and are connected to each other at a connecting portion 26.
, 25 is polypropylene mixed with filler (f-P
P). In FIG. 8, only the left piece 24 is shown.

As shown in FIG. 9, a protector 27 made of urethane rubber and a sponge 28 are attached to the contact surface of the cowl louver top body 23a with the windshield 22, and the hard cowl louver top body 23a and a sponge 28 are attached. This is to prevent damage and vibration to the windshield 22 due to contact with the windshield 22. In addition, as shown in FIGS. 7 and 8, a large number of ventilation holes 29 are transparently provided in the vicinity of the center of the cowl louver top 23, and these ventilation holes 29 include:
A net 30 made of wire mesh is attached. When outside air is introduced into the vehicle interior, the net 30 acts as a filter to prevent foreign matter from entering, and fresh air free of foreign matter is introduced into the vehicle interior.

0004

However, the cowl louver top 23 having the above-mentioned structure has the following problems. That is, the protector 27 and the sponge 28 were bonded with adhesive after the cowl louver top body 23a was molded. This bonding work was extremely difficult because the contact surface of the main body 23a with the windshield 22 has a complicated shape. Therefore, not only was it time-consuming for the operator, but the incidence of defective products was also high. In addition, if the adhesion is insufficient, a gap may be created between the windshield 22 and the windshield 22, which may cause abnormal noise due to vibration or the like.

Furthermore, since the main body 23a is made of a hard resin such as f-PP, it cannot absorb vibrations when the entire cowl louver top 23 vibrates, and there is a possibility that abnormal noises may be generated accordingly. there were. The present invention has been made to solve the above problems, and its purpose is to provide a cowl that is securely sealed against the windshield, can absorb vibrations, and is free from the risk of generating various abnormal noises. Our goal is to provide louver tops.

[0006]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a net that is disposed to fit with the lower front surface of a windshield of an automobile to block foreign objects when outside air is introduced into the interior of the automobile. A cowl louver top comprising:
The gist of the cowl louver top is that the skin layer is formed of a soft material, the core layer is formed of a hard material, and at least a contact portion that contacts the windshield is formed of the skin layer. do.

[0007]

[Operation] Since the skin layer is made of a soft material, vibrations of the entire cowl louver top are absorbed. Also,
Since at least the contact portion that comes into contact with the windshield is formed of a soft material, the windshield is not damaged and is reliably sealed to the windshield. Furthermore, since the core layer is made of a hard material, it has a certain level of rigidity, so that it can be installed reliably and is not easily damaged.

[0008]

[Example] An example embodying the present invention is shown below in Figs.
The explanation will be based on 6. FIG. 2 is a perspective view showing a state in which the cowl louver top 1 in which the left piece 2 and the right piece 3 are connected is arranged on the automobile 4, and FIG. 3 shows the left piece 2 of the cowl louver top 1 of this embodiment. FIG. Also, Figure 4 is Figure 3
It is a sectional view taken along the line A-A in FIG.

As shown in FIGS. 2 and 3, the cowl louver top 1 consists of a left piece 2 and a right piece 3, which are connected to each other at a connecting portion 5. As shown in FIG. 4, this cowl louver top 1 has a skin layer 6 made of soft SEBS (styrene-ethylene-butadiene-styrene copolymer resin), and a core layer 7 made of f-PP. ing. A large number of rectangular ventilation holes 8 are vertically and horizontally provided in substantially the center of the vehicle 4 in the vehicle width direction, and the ventilation holes 8 are covered with a wire mesh 9 as a net. Further, a glass fitting groove 10 as a contact portion is integrally formed on one side edge of the cowl louver top 1.
A windshield 11 is fitted therein.

Each piece 2, 3 of the cowl louver top 1 is molded by a sandwich molding method. That is, as shown in FIG. 5, the fixed mold 1 located on the upper side of the figure
2, a movable mold 13 located below, and a slide core 14 form a cavity 15 corresponding to the shape of each piece 2, 3 of the cowl louver top 1, and one end of the cavity 15 has a hole for injecting resin. A gate 16 is formed in advance.

Then, as shown in FIG. 6, the cavity 1
SE forming the skin layer 6 through the gate 16 opened at 5
After injecting BS and forming the core layer 7 after a few seconds, f-PP
Inject. Then, the SEBS is pressed against the inner circumferential wall of the cavity 15 by the f-PP and flows inside the cavity 15 from the right to the left in the figure. And finally S again
By injecting EBS, a state as shown in FIG. 1 is created. Although it is possible to mold the SEBS without injecting it again, in this case, it is necessary to inject enough SEBS to sufficiently mold the skin layer 6 in the first injection step. Next, after cooling and solidifying this, the movable mold 13 and slide core 14 are slid, and the fixed mold 12
Each piece 2, 3 is obtained by taking it out.

Next, the functions and effects of the cowl louver top 1 having the above structure will be explained. First, at the time of attachment to the automobile 4, as shown in FIG. 2, the windshield 11 is fitted into the glass fitting groove 10 of the cowl louver top 1 and placed at a predetermined position on the vehicle body. At this time, since the surface of the glass fitting groove 10 that contacts the windshield 11 is covered with soft SEBS, the fitting can be easily performed without damaging the windshield 11. Further, since the core layer 7 is formed of hard f-PP, the rigidity of the cowl louver top 1 is maintained. Therefore, it can be easily attached to a predetermined location.

[0013] Also, during use, soft SEBS
Since the windshield 11 is reliably sealed, no gaps are formed, and the skin layer 6 is made of soft SEBS.
The vibration is absorbed and there is no risk of abnormal noise being generated. Furthermore, since the core layer 7 provides a certain level of rigidity, it is difficult to be damaged by wind, foreign objects, etc.

Furthermore, during manufacturing, the cowl louver top 1 in which the skin layer 6 and the core layer 7 are integrated can be easily formed by a sandwich molding method. Therefore, the trouble of pasting the protector 27, sponge 28, etc. as in the conventional case can be saved, and the operator is not bothered. Moreover, since there is no risk of mistakes due to adhesion, the incidence of defective products can be significantly reduced.

It should be noted that the present invention is not limited to the above-mentioned embodiments, but may have the following configuration without departing from the spirit of the invention. That is, in the above embodiment, the material of the skin layer 6 was SEBS, but for example, T
A soft resin such as PU (thermoplastic polyurethane) may also be used. Further, the core layer 7 is not limited to f-PP at all, and may be made of a thermoplastic resin such as TPU mixed with talc or glass fiber, for example.

[0016]

[Effects of the Invention] The cowl louver top of the present invention has the advantage that it is reliably sealed against the windshield, can absorb vibrations, and is free from the risk of generating various abnormal noises.

[Brief explanation of the drawing]

FIG. 1 is a partial cross-sectional view showing a cowl louver top according to this embodiment formed by a sandwich molding method.

FIG. 2 is a perspective view showing a state in which a cowl louver top in which a left piece and a right piece are connected is installed in an automobile.

FIG. 3 is a perspective view showing the left piece of the cowl louver top.

4 is a sectional view taken along line AA in FIG. 3. FIG.

FIG. 5 is a cross-sectional view showing a mold for molding each piece of the cowl louver top by a sandwich molding method.

6 is a sectional view showing a state in which resin is injected into the mold of FIG. 5. FIG.

FIG. 7 is a perspective view showing a conventional cowl louver top installed in an automobile.

FIG. 8 is a perspective view showing the left piece of a conventional cowl louver top.

9 is a sectional view taken along line BB in FIG. 8. FIG.

[Explanation of symbols]

1...Cowl louver top, 4...Automobile, 6...Skin layer, 7
... Core layer, 9 ... Wire mesh as a net, 10 ... Glass fitting groove as a contact portion, 11 ... Windshield.

Claims (1)

[Claims] [Claim 1] A cowl louver top equipped with a net (9) that is arranged to fit with the lower front surface of a windshield (11) of an automobile (4) and blocks foreign objects when introducing outside air into the vehicle interior. (1), wherein the skin layer (6) is formed of a soft material, the core layer (7) is formed of a hard material, and at least the contact portion (10) that comes into contact with the windshield (11) is formed of a soft material. A cowl louver top characterized by being formed of a skin layer (6).