JPH04260824A - Sliding roof device - Google Patents

Abstract

PURPOSE:To use EPDM for a weather strip of a sliding roof device for a vehicle, and bind a member having a good sliding property to a deflector which reduces induction of wind into a car room. CONSTITUTION:For binding a member 325 to a weather strip (base material of rubber), a lamination film 323 composed of lamination of a first film comprising olefine resin having a polarity functional group, and a second film comprising thermoplastic resin having a polarity is used. For the first film, the polarity functional group is introduced to the olefine resin having no polarity, so it is easily bound to the second film of the polarity resin such as polyester. By thus using such a lamination film, the first film is bound because it has a compartibility to the olefine rubber or EPDM, and the second film is bound strongly to the member because it has the polarity.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding roof device having an EPDM weather strip attached to a sliding roof panel for a vehicle.

0002

BACKGROUND OF THE INVENTION Conventionally, EPDM (ethylene propylene diene ternary rubber) has been widely used as a rubber member for automobiles in parts where weather resistance, ozone resistance, heat resistance, etc. are important. Research has been conducted to enhance the design and functionality of rubber substrates made of EPDM by adhering various members to them.

[0003] For example, the roof of the body of a so-called one-box wagon vehicle is provided with a sliding roof device that opens and closes an opening using a sliding roof panel. Around the sliding roof panel above, E
A PDM weather strip is installed. Also,
A deflector is attached to the front edge of this opening to reduce wind from entering the vehicle interior through the opening when the sliding roof panel is opened. This deflector is configured so that when the sliding roof panel is closed, it is stored within the thickness of the roof, and when the sliding roof panel is opened, it stands up and protrudes above the roof.
4-7055). In this technology, the mechanism for pushing the deflector against the sliding roof panel is realized using a separate part with a surface treatment that provides excellent sliding properties. However, such separate parts have led to an increase in the number of parts and an increase in cost.

[0004] As a means to solve such problems, it has been considered to bond a member to be adhered with excellent sliding properties to the sliding portion of the weather strip with respect to the deflector, or to use flocking. For example, the following method is known as a bonding method for such an EPDM rubber substrate. That is, this is a method in which a rubber substrate that has been extruded and vulcanized is subjected to the following treatments: buffing, degreasing, primer application, adhesive application, drying, attachment of a member to be adhered, and adhesive curing. However, the conventional adhesive technology requires many of the above-mentioned treatments after the vulcanization treatment, resulting in a long production line, low productivity, and increased costs.

[0005] Furthermore, even with the technique of applying flocking to the sliding parts of weather strips, treatments such as flocking and curing of the adhesive using a Seiden flocking device (Japanese Patent Publication No. 57-56378) are required after adhesive application. , there were problems similar to those mentioned above.

[0006] The present invention aims to solve the problems of the conventional technology described above, and aims to solve the problems of the conventional technology.
As a means of adhering a member to be adhered with excellent sliding properties to a part of a DM rubber base, we use a weather strip that does not require treatments such as buffing or adhesive application, and has excellent adhesive strength. The purpose is to provide.

[0007]

[Means for Solving the Problems] The present invention, which has been made to solve the above problems, provides a slide roof panel that opens and closes an opening in the roof of a vehicle body, and a slide roof panel made of EPDM that is attached to the outer periphery of the slide roof panel. A sliding roof device comprising: a rubber base; and a deflector that is attached to the front edge of the opening and stands up when the sliding roof panel is opened to reduce wind entrainment into the vehicle interior,
A non-metallic sliding adhesive member is heat-welded to a portion of the rubber base that slides on the deflector via a laminated film, and the laminated film is disposed on the rubber base side,
and a first olefin resin having a polar functional group.
The present invention is characterized in that it uses a laminated film of the above film and a second film disposed on the side of the adhered member and made of a polar thermoplastic resin.

[0008] Here, EPDM refers to ethylene-α-olefin-nonconjugated diene copolymer rubber, of which ethylene propylene diene ternary rubber is a typical example.

[0009] Furthermore, a laminated film is one in which a first film and a second film are laminated. The first film is made by introducing a polar functional group into a non-polar olefin resin. In other words, the first film has adhesion to EPDM as an inherent property of olefin resin, and also has adhesion to resins such as polyethylene and nylon by introducing polar functional groups. It is something. Examples of polar functional groups that add such properties include carboxyl groups, hydroxyl groups, amino groups, halogen groups, and acrylic groups. Further, the second film is made of a polar resin, and is a thermoplastic resin that melts when heated. That is, the second film has the property of adhering to both the first film and the non-metallic member.

Furthermore, the member to be adhered is a non-metallic member that has the property of adhering to the second film and has excellent sliding properties, such as a woven fabric such as polyester or cloth, or polyvinyl chloride. (PVC), nylon, urethane, or other resin sheets can be used.

[0011]

[Operation] The rubber substrate of the present invention uses EPDM, which has excellent heat resistance, weather resistance, and ozone resistance. EPDM
Since it is a non-polar polymer, it can adhere to non-polar resins of the same type as polyethylene and polypropylene, but it cannot adhere to materials such as polar resins such as polyester or non-metals such as cloth. In the present invention, a laminated film is used in order to adhere a non-metallic member to be adhered to an EPDM rubber substrate having such properties. The laminated film is obtained by laminating a first film made of an olefin resin having a polar functional group and a second film made of a polar thermoplastic. The first film is a non-polar olefin resin with polar functional groups introduced into it, so the second film is a polar thermoplastic resin such as polyester.
It can be easily laminated with other films. Using such a laminated film, the first film of the laminated film is disposed on the rubber substrate side, the second film is disposed on the adhered member side, and these are heat-press bonded. As a result, the first film adheres to EPDM, which is an olefin rubber, because it is compatible with the EPDM, and the second film firmly adheres to the member to be adhered because it has polarity. Then, by contacting the deflector at the part where this adhered member is adhered,
The deflector can be smoothly turned upside down to the outside of the roof of the vehicle body or stored within the roof.

0012

EXAMPLES In order to further clarify the structure and operation of the present invention described above, preferred examples of the present invention will be described below. (1) Adhesive structure First, in describing the embodiment, the basic configuration of the adhesive structure shown in FIG. 2 and its manufacturing method will be explained. In FIG. 2, the adhesive structure 1 is constructed by adhering a member 9 to be adhered to a rubber base 5 made of EPDM via a laminated film 7. The laminated film 7 includes a first film 11 disposed on the rubber base 5 side and a second film 13 disposed on the adhered member 9 side. Here, EPDM is produced by adding a small amount of non-conjugated diene such as ethylidene nobornene, dicyclopentadiene, 1,4-hexadiene, etc. as a third component to ethylene or α-olefin (e.g. propylene) and copolymerizing it. A double bond is introduced into the chain, making it sulfur vulcanizable. This EPDM usually contains auxiliary materials such as a reinforcing filler (carbon black or white filler), a plasticizer, a lubricant, and a vulcanizing agent. Moreover, the material of the first film 11 is an olefin resin having a polar functional group. For example, Admar (trade name, manufactured by Mitsui Petrochemical Industries, Ltd.), Bond First (trade name, manufactured by Sumitomo Chemical Industries, Ltd.), and Modic (trade name, manufactured by Mitsubishi Oil & Chemical Co., Ltd.) can be used. The material of the second film 13 is a copolymerized polyester resin. For example, Chemit R-248
(manufactured by Toray Industries, Inc.: trade name) can be used. Furthermore, the adhered member 9 is made of a material that has adhesive properties with the second film 13 and has excellent sliding properties, and for example, cloth such as polyester or resin sheet material such as PVC can be used.

Next, a method for manufacturing the adhesive structure 1 will be explained. The adhesive structure 1 is manufactured by the production line shown in FIG. 1, but before explaining the continuous process by the production line, the process of forming the laminated film 7 will be explained. As a method for forming such a laminated film 7, well-known extrusion lamination method, dry lamination method, wet lamination method, hot melt lamination method, two-layer inflation method, etc. can be used. Among them, the extrusion lamination method, which is the most suitable method for manufacturing the laminated film 7, involves melting each of the molten resin materials of the first film 11 and the second film 13 from a T-shaped die installed at the tip of an extruder. By coextruding, wide films are laminated and formed. In addition, the dry lamination method
This is a method in which separately formed films are bonded together using an adhesive in a separate process.

Next, the molding process shown in FIG. 1 will be explained. First, the rubber base 5 is extruded. Rubber base 5
The rubber substrate 5 is manufactured by using an EPDM material 21 as the solid rubber and extrusion molding it with an extruder 23. Next, vulcanization treatment is performed. This step is carried out by passing the extruded rubber substrate 5 through a vulcanization tank 25. The vulcanization is carried out at a temperature of 180°C to 240°C, which is suitable for vulcanizing EPDM. After the steps described above, steps such as cooling and cutting are performed. Next, an adhesion process is performed. That is, in this step, a predetermined portion of the rubber base 5 to which the adhered member 9 is to be adhered is heated, and the laminated film 7 is heated.
The member to be adhered 9 is adhered to the rubber base 5 by pressing the member to be adhered 9 to which has been adhered in advance. As a result, the laminated film 7 is thermally welded, and the adhered member 9 is adhered to the rubber base 5. Note that methods for heating a predetermined portion of the rubber base 5 include a hot jet method in which heated air is injected from a nozzle, an infrared irradiation method, and a method in which the rubber base is placed in a mold and heated.

In the above embodiment, the rubber base 5 made of EPDM is
In order to adhere the adhered member 9, a laminated film 7 in which a first film 11 in which a polar functional group is introduced into a non-polar olefin resin and a polar second film 13 are laminated is used. There is. That is, the first film 11 of the laminated film 7 is placed on the rubber base 5 side, and the second film 1 is placed on the rubber base 5 side.
A laminated film 7 is interposed between the rubber base 5 and the member to be bonded 9 so that the rubber substrate 5 and the member to be bonded 9 are disposed on the side of the member to be bonded 9, and these are pressed together in a heated state. As a result, the first film 11 adheres to the rubber base 5 because it is compatible with EPDM, which is an olefin rubber, and the second film 13
Since it has polarity, it firmly adheres to the member 9 to be adhered. As a result, the adhered member 9 is firmly adhered to the rubber base 5.

According to the above-described embodiment, the following effects can be achieved in comparison with the conventional technology. ■
Since processes such as buffing and applying adhesive are not necessary to bond the members 9 to be bonded, the production line is shortened and the equipment is simplified. ■ Also, since it uses heat welding by heat compression bonding, there is no need for adhesive.
Therefore, cost reduction can also be achieved.

(2) Weatherstrip Next, an embodiment of the weatherstrip will be described. As shown in FIG. 3, a sliding roof device 303 is provided on the roof of a body 301 of a one-box vehicle. This sliding roof device 303 includes a slide roof panel 307 that opens and closes an opening 305 in the roof, and is configured to be slidable by the driving force of a motor (not shown). A weather strip 309 made of EPDM is attached to the peripheral edge of the slide roof panel 307. This weather strip 30
9 is a mounting part 311 attached to the slide roof panel 307 and an opening part 3, as shown in FIGS. 5 and 6.
It consists of a rubber base 315 integrally formed with a lip part 313 that abuts the peripheral edge of the rubber base 315. In addition, the opening 3
Two deflectors 321 with the same configuration are installed symmetrically on the front edge of the vehicle 05 to reduce the wind being drawn into the vehicle interior. One end of the deflector 321 is biased clockwise by a spring (not shown), and the body 301
It is supported so that it can rotate 90 degrees. A member 325 to be adhered is adhered to a portion of the rubber base 315 that comes into contact with the deflector 321 via the laminated film 323 described above. The adhered member 325 is made of a polyester fabric that has excellent sliding properties with respect to the deflector 321.

In the above configuration, when the opening 305 in FIG. 3 is open, the deflector 321 is erected by the spring force, and the rectifying action reduces the wind being drawn into the vehicle interior. From this state, when the slide roof panel 307 moves in the closing direction by the driving force of the motor, the weather strip 30 integrated with the slide roof panel 307
9 slides on the adhered member 325, the deflector 3
21 and store the deflector 321 flush with the roof (see FIG. 4). As a result, the weather strip 30
9 seals between the lip portion 313 and the body 301 . In this pushing-down operation, the adhered member 325 performs a smooth sliding action on the deflector 321 that cannot be achieved by the rubber base 315 alone.

Next, a method for manufacturing the weather strip 309 will be explained with reference to FIG. First, extrusion molding was performed. For extrusion molding, an extruder 54 was used to form an extrusion molded body. The extrusion speed at this time was set to 5 m/min. The composition of EPDM used in this example is as follows. Note 1) "JSREP 57C" manufactured by Japan Synthetic Rubber Co., Ltd., trade name. Next, vulcanization treatment was performed. This step was carried out by passing the extruded body 59 through a microwave heating device (UHF) 61 mainly for heating and a hot air vulcanization device (HAV) 63 mainly for keeping warm. As the vulcanization conditions at this time, 200°C x 5 minutes was adopted. Thereafter, the vulcanized product was cooled by a cooler 69 and cut into a predetermined length. Subsequently, an adhesive treatment was performed. In this step, a predetermined portion of the weather strip 309 is heated with a photojet gun to a surface temperature of approximately 200°C, and the adhered member 325 to which the laminated film 323 has been adhered in advance is heated for 10 k
By pressing at g/cm2, the rubber base 315
This was done by thermally welding the member to be adhered 325 to the surface of the . At this time, the laminated film 323 uses an olefin resin, Admer (trade name, Mitsui Petrochemical Industries, Ltd.) as the first film, and a copolymerized polyester resin, Chemit R-248 (Toray Industries, Ltd.) as the second film. (trade name) manufactured by Co., Ltd., and were laminated to have film thicknesses of 50 μm and 30 μm, respectively.

Therefore, according to the weather strip 309 of this embodiment, in addition to the above-mentioned effects (1) to (3), the adhered member 325 adhered to the rubber base 315
In order to act to slide against 21 and defeat it,
Unlike the conventional technology, there is no need to provide a separate member for tilting the deflector, and the structure can be simplified. Further, since the adhered member 325 is bonded only to the portion that slides on the deflector, there is little increase in cost due to the adhered member 325. Next, this weather strip 309 was left to stand at room temperature for 24 hours and then subjected to a peel test as described below. That is, the weather strip 309
As shown in FIG. 8, a test piece 73 with a width of 5 mm was cut out, and the tip of the adhered member 77 was pulled against the rubber base 75 in the direction of the arrow at a pulling speed of 100 mm/min. The peel strength at this time was rupture at the rubber base 75 under a load of 2.5 kg/5 mm.

Furthermore, the sliding roof device 303 may be of the type shown in FIG. That is, this sliding roof device 303 uses a deflector 331 that stands up over the entire length of the front edge of the opening 305,
This is supported on both sides by arms 333, and
When the sliding roof panel 307 is closed, the weather strip 335 attached to the sliding roof panel 307 pushes the arm 333 to retract the deflector 331, while when the sliding roof panel 307 is opened,
The deflector 331 is erected by spring force. In this embodiment, a member to be adhered 341 is adhered to a portion of the lower surface of the rubber base 337 of the weather strip 335 that comes into contact with the arm 333 via a laminated film (not shown). Due to the action of the adhesive member 341, the weather strip 335 slides smoothly on the arm 333. Also in this case, the deflector 33
Unlike conventional technology, there is no need to provide a separate member between the slide roof panel 307 and the deflector 331 in order to raise and store the roof panel 1, and it is only necessary to glue the member 341 to be adhered, so the configuration is simple. become.

[0022]

As explained above, according to the weather strip of the present invention, the rubber base and Since it uses a laminated film that adheres to each member to be adhered, it has excellent adhesive strength. Further, since the adhered member adhered to the rubber base slides against the deflector and acts to tilt it down, there is no need to provide a separate member as in the conventional case, and the configuration can be simplified.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a method of manufacturing an adhesive structure according to an embodiment of the present invention.

FIG. 2 is a sectional view showing an adhesive structure.

FIG. 3 is a perspective view showing the sliding roof device of this embodiment.

FIG. 4 is a perspective view showing the slide panel of this embodiment in a closed state.

FIG. 5 is a sectional view showing the vicinity of the deflector.

FIG. 6 is a perspective view showing the vicinity of the deflector.

FIG. 7 is an explanatory diagram showing a method for manufacturing a weather strip.

FIG. 8 is an explanatory diagram illustrating an adhesive strength test.

FIG. 9 is a partially cutaway perspective view of another embodiment.

[Explanation of symbols]

1 Adhesive structure 5 Rubber base 7 Laminated film 9. Parts to be adhered 11 First film 13 Second film 23 Extruder 25 Vulcanization tank 54 Extruder 75 Rubber base 77 Part to be adhered 301 Body 303 Sliding roof device 305 Opening 307 Slide roof panel 309 Weather strip 311 Mounting part 315 Rubber base 321 Deflector 323 Laminated film 325 Part to be adhered 331 Deflector 333 Arm 335 Weather strip 337 Rubber base 341 Part to be adhered

Claims (1)

[Claims] Claim 1: A sliding roof panel for opening and closing an opening in the roof of a vehicle body; a rubber base made of EPDM attached to the outer peripheral edge of the sliding roof panel; and a sliding roof panel attached to the front edge of the opening. In a sliding roof device equipped with a deflector that stands up when the roof panel is opened to reduce the wind being drawn into the vehicle interior, a non-contact member is heat-welded via a laminated film to the part of the rubber base that slides on the deflector. It has a metallic sliding member to be adhered,
The laminated film includes a first film disposed on the rubber substrate side and made of an olefin resin having a polar functional group, and a second film disposed on the adhered member side and made of a polar thermoplastic resin. A sliding roof device characterized by using a laminated film of.