JPH06127275A - Weather strip with intake and exhaust port - Google Patents

Abstract

PURPOSE:To provide an intake and exhaust port in which degradation of sealing performance at the time of use can be prevented and without possibility of deformation thereof at the time of manufacturing. CONSTITUTION:A weather strip 6 is constituted of a long weather strip main body 8 having a hollow seal part 11, and a first and a second connection parts 9, 10 for connecting one end to the other end of the main body 8. One end of the first connection part 9 is molded being connected to one end of the weather strip main body 8 while the second connection part 10 is molded being connected to the other end of the first connection part 9 and the other end of the main body 8. In the first connection part 9, a cylindrical intake and exhaust port 15 projecting in the orthogonal direction is integrally molded. Consequently, different from conventional, the weather strip 6 is connected only by the first and the second connection parts having elasticity and therefore elasticity is not damaged at the time of use. In manufacturing, both the connection parts 9, 10 are connectingly molded by means of a metal mold and therefore deformation is not caused.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weather strip having a seal portion provided on, for example, a sliding roof of an automobile. More specifically, gas is injected from an intake / exhaust port communicating with the inside of the seal portion to improve sealing performance. The present invention relates to a weather strip having an intake / exhaust port designed to achieve the above.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 8, it is known that a sliding roof 52 such as a sunroof or a moonroof is provided in an opening of a ceiling 51 of an automobile. Generally, a weather strip 53 is arranged around the sliding roof 52. The weather strip 53 is provided with a hollow seal portion 54, and the seal portion 54 seals the gap between the sliding roof 52 and the opening. The weather strip 53 prevents air from entering and exiting through the gap between the sliding roof 52 and the opening when the vehicle is running, and prevents rainwater from entering during rain.

Further, in recent years, in order to further improve the sealing performance of the weather strip 53 when the automobile is traveling at a high speed, a technique of pressurizing a gas into the seal portion 54 has been proposed (for example, Fairness 3-5
447 publication). In this type of technique, as shown in FIG. 9, one end and the other end of a seal portion 54 of a weather strip body 55 formed in an elongated shape are connected with a connection piece 56 interposed. The connection piece 56 includes a tubular piece body 57 and an intake / exhaust port 58 that projects from the piece body 57 in a tubular shape. Then, the piece body 57
The weather strip body 55 and the connection piece 56 are connected in an annular shape by fitting both ends of the seal portion 54 to one end and the other end of the seal portion 54.

Subsequently, as shown in FIG. 10, the periphery of the piece main body 57 including the fitting portion is covered and molded in the mold 59 with the same material as the weather strip main body 55. By this coating and molding, both 55 and 57 are firmly connected to each other, and the weather strip 53 having excellent design is obtained.

The weather strip 53 is attached to the periphery of the sliding roof 52, and when the sliding roof 52 is closed, gas pumped from a pump (not shown) is injected into the seal portion 54 from the intake / exhaust port 58. . As a result, the seal portion 54 expands, the opening portion and the seal portion 54 firmly come into close contact with each other, and generation of abnormal noise during high-speed traveling or the like is suppressed.

[0006]

However, the above-mentioned conventional techniques have the following problems. That is, if the piece body 57 of the connection piece 56 is formed of a flexible material, the piece body 57 is deformed by the flow pressure of the coating material in the coating / molding process in the mold 59 described above. There was a risk that As a result, the piece body 57 may block the gas passage when the weather strip 53 is used.

On the other hand, the piece body 57 of the connection piece 56.
Is made of a rigid material, the piece body 57
Does not deform during the coating / molding process. However, since the piece body 57 is not easily deformed even when it is used and has poor elasticity, the sealing force of the weather strip 53 is reduced only in the portion of the piece body 57.

The present invention has been made to solve the above problems, and an object of the present invention is to prevent deterioration of the sealing performance during use in a weather strip having an intake / exhaust port, and SUMMARY OF THE INVENTION It is an object of the present invention to provide a weather strip having an intake / exhaust port that is free from deformation during manufacturing.

[0009]

In order to achieve the above object, the present invention provides a weather strip body which is formed in a long shape by extrusion molding, has a hollow seal portion, and has elasticity, and a weather. The strip body is made of the same material as the strip body, and has a connection part that is connected and molded to one end and the other end of the weather strip body by a die so that the weather strip body has almost the same appearance. A gist of the weather strip is a weather strip having an intake / exhaust port which is formed so as to project in a direction intersecting with the connecting part and which is connected to the inside of the seal part.

[0010]

According to the above construction, one end and the other end of the weather strip body formed into a long shape by extrusion molding are
A connecting portion made of the same material as the weather strip body and having an external appearance substantially the same as that of the weather strip body is connected and molded by a mold. In addition, an intake / exhaust port communicating with the inside of the seal part is formed in the connecting part so as to project in a direction intersecting with the connecting part. Then, when the weather strip is used, gas is injected from the intake / exhaust port. For this reason, since the seal portion is expanded, the sealability of the weather strip is enhanced.

Here, the weather strip is not separately provided with a connecting piece for connecting one end and the other end of the weather strip body, and the weather strip body and the connecting portion form an annular weather strip. Will be formed. The connecting portion is made of the same material as the weather strip body having elasticity. Therefore, when the weather strip is used, the elasticity of the weather strip is not impaired by the rigidity of the connection piece.

Further, in manufacturing the weather strip, since the flexible connecting piece is not used and the connecting portion is connected and molded by the mold, the weather strip is not deformed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment embodying the present invention will now be described with reference to FIGS.
6 will be described. As shown in FIGS. 2 and 3, a substantially rectangular opening 3 is formed in the ceiling portion 2 of the automobile 1, and the opening 3 is opened and closed by sliding in the front-back direction of the automobile 1. A possible sliding roof 4 is provided. The sliding roof 4 includes a transparent and substantially rectangular glass plate 5, a weather strip 6 mounted around the glass plate 5, and a metal slide for supporting the glass plate 5 and the weather strip 6. And a panel 7.

As shown in FIGS. 1 and 3, the weather strip 6 includes an elongated weather strip body 8, a first connecting portion 9 for connecting one end and the other end of the body 8, and a first weather strip 6. It is composed of two connecting portions 10. Weather strip body 8
Is made of EPDM (ethylene-propylene-diene copolymer rubber) solid rubber and is formed by a known extrusion molding method. The weather strip body 8 has a hollow seal portion 11, a lip portion 12 extending downward from the seal portion 11, a glass fitting portion 13 having an inverted U-shaped cross section, a seal portion 11 and a glass fitting portion. And a slide panel fitting portion 14 formed by 13. Then, the glass plate 5 is fitted in the glass fitting portion 13, and the slide panel 7 is fitted in the slide panel fitting portion 14, and they are immovable with respect to the fitting portions 13 and 14, respectively. It is fixed.

Further, one end (the left end in the drawing) of the first connecting portion 9 is connected to one end of the weather strip body 8, and
The other end (right end in the figure) of the connection part 9 is connected to one end (left end in the figure) of the second connection part 10. The other end (the right end in the figure) of the second connecting portion 10 is connected to the other end of the weather strip body 8.
In addition, the first and second connecting portions 9 and 10 form an annular weather strip 6.

The first and second connecting portions 9 and 10 are also
Like the weather strip body 8, it is made of EPDM solid rubber. The first connecting portion 9 is integrally formed with a cylindrical intake / exhaust port 15 that projects from a central portion of the connecting portion 9 in a direction orthogonal to the connecting portion 9. And
The first connecting portion 9 is the same as the weather strip body 8 except that a part of the portion corresponding to the glass fitting portion 13 is cut out so as not to hinder the projection of the intake / exhaust port 15. It has a cross-sectional shape. In addition, the second connecting portion 10
Has the same sectional shape as the weather strip body 8. That is, the weather strip body 8 and the first and second connecting portions 9 and 10 have the same external shape. Further, the intake / exhaust port 15 is communicated with the inside of the first connecting portion 9, and is also communicated with the second connecting portion 10 and the seal portion 11 of the weather strip body 8.

Further, a pump (not shown) is provided on the ceiling portion 2, and the pump is connected to the intake / exhaust port 15 via a hose (not shown). Then, when the sliding roof 4 is closed, the gas from the pump is pressure-fed to the intake / exhaust port 15 via the hose and injected into the seal portion 11 from the intake / exhaust port 15. By this injection, the seal portion 11 of the weather strip 6 expands. For this reason, the opening 3 and the seal portion 11 are firmly brought into close contact with each other, and the generation of abnormal noise during high-speed traveling is suppressed.

Next, a method of manufacturing the weather strip 6 having the above structure will be described. First, a well-known extrusion molding method is used to obtain a weather strip body 8 which is long and cut into a predetermined length.

Subsequently, as shown in FIGS. 4 and 5, a first mold is formed on one end of the weather strip body 8 by a mold (not shown) having a cavity having the shape of the first connecting portion 9. The connection portion 9 is connected and molded. That is, the first connecting portion 9 having the intake / exhaust port 15 is molded, and one end of the first connecting portion 9 is connected to one end of the weather strip body 8.

Next, the L-shaped core 16 is inserted from the intake / exhaust port 15. One piece of the core 16 is the seal portion 1.
It is formed slightly larger than the inner circumference of 1, and
The other piece of the core 16 is formed to be slightly larger than the inner circumference of the intake / exhaust port 15. The tip of one piece of the core 16 is projected from the portion corresponding to the seal portion 11 of the first connecting portion 9, and the tip of the other piece is fixed in a state of being projected from the intake / exhaust port 15.

Then, as shown in FIG.
The tip portion of one piece is fitted into the seal portion 11 on the other end side (right side in the drawing) of the weather strip body 8. As a result, the weather strip body 8 is annularly connected via the first connecting portion 9 and a part of the core 16.

A part of the core 16 is a mold 17
It is installed inside. A cavity (not shown) having the shape of the second connecting portion 10 is formed in the mold 17. Then, the EPDM solid rubber is injected and filled into this cavity, so that the second connecting portion 1
0 is spliced. That is, the second connecting portion 10 having the same cross-sectional shape as the weather strip body 8 is molded, and one end of the second connecting portion 10 is connected to the other end of the first connecting portion 9, The other end of the second connecting portion 10 is connected to the other end of the weather strip body 8. Thus, as shown in FIG. 1, the weather strip body 8 and the annular weather strip 6 to which the first and second connecting portions 9 and 10 are connected are obtained.

According to the weather strip 6 of this embodiment, the weather strip body 8 can be used without using the connecting piece used in the above-mentioned prior art.
One end and the other end are connected by the first and second connecting portions 9 and 10, and in particular, the first connecting portion 9 is provided with an intake / exhaust port 15. That is, the first and second connecting portions 9, 10
Is the same EPD as the weather strip body 8 having elasticity
It is composed of M solid rubber only. Therefore, when the weather strip 6 is used, since a material having rigidity does not exist in the weather strip 6, the elasticity of the weather strip 6 is not impaired. as a result,
When the weather strip 6 is used, it is possible to prevent the deterioration of the sealing performance due to the loss of elasticity.

In manufacturing the weather strip 6, a flexible connecting piece is not used, and the first and second connecting portions 9 and 10 are connected and molded by the mold 17 or the like. The weather strip 6 is not deformed. Therefore, it is possible to eliminate the risk of deformation during manufacturing, and it is possible to eliminate the risk of blocking the gas passage during use.

Further, in this embodiment, the external shapes of the first and second connecting portions 9 and 10 are the same as that of the weather strip body 8, so that the weather strip body is connected only by the connecting piece. It is possible to improve the appearance quality as compared with.

The present invention is not limited to the above-described embodiment, but may be implemented as follows with a part of the configuration appropriately modified without departing from the spirit of the invention. (1) In the above-described embodiment, when the weather strip 6 is manufactured, the first connecting portion 9 having the intake / exhaust port 15 is connected and molded to one end of the weather strip body 8, and the intake / exhaust port 15 is used. The L-shaped core 16 was inserted and the tip portion of one piece of the core 16 was fitted into the seal portion 11 on the other end side of the weather strip body 8. Then, the second connecting portion 10 and the weather strip body 8 are connected to the first connecting portion 9 by the mold 17.
Although the connection molding is performed at the other end of the above, it may be manufactured in the following manner, for example.

That is, as shown in FIG. 7, one piece of the L-shaped core 21 is inserted into one end of the weather strip body 8 and another piece of the L-shaped core 22 is inserted into the other end. Insert. However, the other pieces of the cores 21 and 22 have a semicircular cross section, and they are in contact with each other to have a circular cross section. Then, these cores 21 and 22 are placed in the mold 23, and a connection part (not shown) is connected and molded.
Then, the cylindrical intake and exhaust ports are formed by the portions of the other pieces of the cores 21 and 22. After the molding is completed, the cores 21 and 22 are pulled out to obtain a weather strip in which one end and the other end of the weather strip body 8 are connected by a connecting portion. By manufacturing in this way, there is an advantage that connection molding can be performed in one step and one connecting portion can be completed, as compared with the above-described embodiment.

(2) In each of the above-mentioned embodiments, EPDM solid rubber was adopted as the material of the weather strip body 8, but this material is not particularly limited to the above as long as it has elasticity, and it can be used in various applications. You may change suitably according to it.

(3) Although the weather strip 6 is mounted around the sliding roof 4 in each of the above embodiments, the weather strip 6 may be provided in the opening 3 of the ceiling 2. Further, the weather strip 6 may be provided around the door or on the door contact surface of the body.

[0030]

As described above in detail, according to the weather strip having the intake and exhaust ports of the present invention, it is possible to prevent the deterioration of the sealing performance during use, and there is no fear of deformation during manufacturing. It has an excellent effect.

[Brief description of drawings]

FIG. 1 is a partial perspective view showing first and second connection portions of a weather strip and the vicinity thereof in one embodiment embodying the present invention.

FIG. 2 is a partial perspective view showing a sliding roof provided on a ceiling portion of an automobile in one embodiment.

FIG. 3 is a partial cross-sectional view showing a sliding roof in one embodiment.

FIG. 4 is a partial perspective view showing a state in which a first connecting portion having an intake / exhaust port is connected to one end of a weather strip body and a core is inserted from the intake / exhaust port in one embodiment.

FIG. 5 is a partial plan view showing a state in which the first connection portion is connected and molded and the core is inserted from the intake / exhaust port in one embodiment.

FIG. 6 is a partial plan view showing a state at the time of connecting and molding the second connecting portion in the embodiment.

FIG. 7 is a partial plan view showing a state at the time of connecting and molding a connecting portion in another embodiment of the present invention.

FIG. 8 is a partial cross-sectional view showing a sliding roof in the related art.

FIG. 9 is a partial perspective view showing a state in which the connection piece is fitted to the weather strip body in the prior art.

FIG. 10 is a cross-sectional view of a mold showing a state in which a connection piece is installed in a conventional technique.

[Explanation of symbols]

8 ... Weatherstrip body, 9 ... First connection part, 10 ...
Second connection part, 11 ... Seal part, 15 ... Intake / exhaust port, 1
7, 23 ... Mold.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Wataru Hattori Wataru Hattori Aichi Prefecture Kasuga Town Kasuga Town Ochiai 1 Nagachibata Toyoda Gosei Co., Ltd. Toyoda Gosei Co., Ltd.

Claims (1)

[Claims] 1. A weather strip body (8) which is formed in a long shape by extrusion molding, has a hollow seal portion (11), and has elasticity, and the same material as the weather strip body (8). Becomes
A connecting portion (9, 9) formed by connecting and molding one end and the other end of the weather strip body (8) with a mold (17, 23) so that the weather strip body (8) has almost the same external appearance. 10) and an intake / exhaust port formed by a mold (23) projecting in a direction intersecting with the connection part (9) and communicating with the inside of the seal part (11). A weather strip having.