JPH066045U - Glass run - Google Patents

Abstract

(57) [Summary] [Object] The glass run 20 firmly adheres a glass sliding member 40 having a fluororesin fiber having excellent slidability to a rubber base 22 made of EPDM. In the glass run 20, in order to bond the glass sliding member 40 to the rubber base 22 made of EPDM,
Adhesive thread 46 is used. The adhesive thread 46 is EPDM
The glass sliding member 40 is integrally formed by being formed of an olefin fiber having a property of adhering to rubber, and further by weaving a fluororesin fiber therein. Even if the glass sliding member has a property that it is difficult to adhere to the rubber base 22, the rubber base 22 and the adhesive thread 46 are both olefinic, so that a part of the adhesive thread 46 is heat-welded onto the rubber base 22. Will be firmly adhered to.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a glass run that makes a door window glass slide smoothly and performs a sealing action.

[0002]

[Prior art]

 Conventionally, as rubber members used in automobiles, many EPDMs (ethylene propylene diene ternary rubber) have been used in parts that emphasize weather resistance, ozone resistance, heat resistance, etc. Has been done.

That is, the glass run is attached to the window frame of the door of the automobile body. As shown in the cross section of FIG. 7, the glass run 100 includes an EPDM base 105 having a sliding groove 103 for sliding the door window glass 101. The base portion 107 of the sliding groove 103 in the base body 105 is provided with a sliding portion 109 for assisting the sliding of the door window glass 101. A fabric 122 made of polyester, nylon, or the like is adhered to the sliding portion 109 via a heat-welding film 120. The fabric 122 slides on the end surface 101a of the door window glass 101, so that the door The sliding of the windshield 101 is made smooth.

[0004]

[Problems to be solved by the device]

 Incidentally, in order to further improve the sliding of the door window glass 101, various materials other than polyester have been studied as the material of the fabric 122, and one of them is a fluororesin. However, although the fluororesin is superior in slidability to polyester and the like, it has a problem that it is difficult to apply it to a glass sliding member because it has poor adhesiveness to EP DM rubber.

An object of the present invention is to solve the above-mentioned problems of the conventional technology, and to firmly adhere a glass sliding member having a fluororesin fiber to an EPDM rubber substrate and to have excellent slidability. The purpose is to provide a glass run.

[0006]

[Means for Solving the Problems]

 The present invention, which has been made to solve the above problems, provides a glass run in which a rubber sliding member made of EPDM that slides on a window glass is stacked, and a glass sliding member is laminated on the sliding portion. A sliding body including a fluororesin, and an adhesive thread formed of a material different from the fluororesin and woven into the sliding body, sewn or knitted, and bonded to the rubber base side. It is characterized by

The EPDM means an ethylene-α-olefin-non-conjugated diene copolymer rubber typified by an ethylene propylene diene ternary rubber.

[0008]

[Action]

 In the glass run of the present invention, the glass sliding member is formed by weaving an adhesive thread made of another type of material into a sliding body containing a fluororesin, and then sewing it in or knitting it. The glass sliding member is adhered to the rubber base side via an adhesive thread. Therefore, the adhesiveness of the adhesive thread compensates for the difficulty of adhesion by the sliding body containing the fluorine fiber, and at the same time, the sliding body made of the fluororesin makes good use of the excellent sliding property with respect to the wind glass.

[0009]

【Example】

 A preferred embodiment of the present invention will be described below in order to further clarify the configuration and operation of the present invention described above.

As shown in FIG. 1, the glass run 20 is attached to the window frame 14 of the door 12 of the automobile body 10. The glass run 20 includes a rubber base 22 made of EPDM, as shown in the cross section of FIG. The rubber base 22 includes a base portion 24 located at a position facing the end surface of the door window glass 16, side surface portions 26a and 26b erected from both ends of the base portion 24, and inner ends of the side surface portions 26a and 26b. Lip parts 28a, 28b are provided which extend and contact the end surfaces on both sides of the door window glass 16, respectively, and a sliding groove 30 is formed surrounded by these lip parts 28a, 28b. Lubricant layers 29a and 29b made of urethane lubricant are formed on the sliding portions of the lip portions 28a and 28b with the door window glass 16.

Further, a glass sliding member 40 is adhered to the base portion 24. The glass sliding member 40 is made of a woven fabric, as shown in FIGS. 3 and 4. That is, the weft yarn 42 and the warp yarn 44 are woven, and the direction of the warp yarn 44 is the sliding direction of the door window glass 16. A part of the warp yarn 44 is replaced with an adhesive yarn 46. Four of the adhesive threads 46 are arranged at substantially predetermined intervals in the arrow direction intersecting the sliding direction (two threads on one side are shown in FIG. 3), and a part of the adhesive thread 46 on the base portion 24 side. Are melted and heat-welded as shown in FIG.

The weft yarn 42 and the warp yarn 44 are made of a fluorine fiber yarn having a property of excellent slidability with respect to the door window glass 16. When weaving the warp yarn 42 and the warp yarn 44, a warp yarn thicker than the weft yarn is used, or the warp yarn is woven with more warp yarns than the weft yarns, so that the warp yarns in the sliding direction of the door window glass 16 are woven. It is desirable that 44 be lifted from the surface of the weft thread 42 so as to increase the slidability.

On the other hand, the adhesive thread 46 is formed of a polyolefin fiber, that is, polypropylene (PP) or polyethylene (PE). The thread diameter of the adhesive thread 46 is preferably 0.1 mm to 0.5 mm. This is because the adhesive yarn 46 needs to have a certain thickness or more in order to partially melt and exhibit the heat-welding property. On the other hand, if the adhesive yarn 46 is too thick, the door window glass 16 does not come into contact with the warp yarn 44, and the adhesive yarn 46 is This is because the sliding resistance is increased by coming into contact with 46.

In the above embodiment, when a driving force is applied to the door window glass 16 by a drive mechanism (not shown), the door window glass 16 slides in the sliding groove 30 of the glass run 20. In this glass run 20, the lip portions 28a and 28b sandwich the both end surfaces of the door window glass 16 to ensure the sealing property. In addition, the glass run 20 is provided with urethane lubricant layers 29a and 29b on the lip portions 28a and 28b, and a glass sliding member 40 is provided on the base portion 24. The sliding action is enhanced.

Next, a method of manufacturing the glass run 20 will be briefly described. First, the step of preparing the glass sliding member 40 is performed before the continuous manufacturing step of the glass run 20. That is, the glass sliding member 40 as a woven fabric is manufactured by a well-known weaving method using the weft yarn 42, the warp yarn 44, and the adhesive yarn 46.

Then, a series of manufacturing steps of the glass run 20 is performed as follows. First, the rubber base 22 is extruded. This step is performed by extruding the EPDM rubber material using an extruder to form an extruded product. Then, vulcanization is performed. This step is carried out by passing the extruded product through a microwave heating device (UHF) mainly for heating and a hot air vulcanizing device (HAV) mainly for heat retention.

Subsequently, the glass sliding member 40 is bonded. That is, the glass sliding member 40 in which the adhesive yarn 46 is woven is thermocompression-bonded to the base portion 24 of the extruded molded body in the preheated state immediately after vulcanization with a pressure roller. At this time, a part of the adhesive thread 46 receives heat from the base portion 24 and is melted to be integrated with the base portion 24 of the glass run 20. Therefore, the glass sliding member 40 is fixed to the base portion 24 via the adhesive thread 46. In the subsequent process, the extruded product is cooled, and urethane lubricant is applied to the lips 28a and 28b by rollers. As a result, the glass run 20 is completed.

According to the glass run 20 and the manufacturing method thereof, the technical effects described below can be obtained.

(1) Since the adhesive thread 46 is woven into the glass sliding member 40, the glass sliding member 40 is integrated. In the glass sliding member 40 in which the adhesive thread 46 is integrated, a part of the olefin-based adhesive thread 46 is heat-welded to the rubber base 22 and firmly adhered to the rubber base 22. Therefore, even though the glass sliding member 40 has the property of not directly adhering to the EPDM rubber substrate 22, it is adhered to the rubber substrate 22 via the adhesive thread 46, and therefore, the glass sliding member 40 is not attached to the EPDM rubber. Various materials can be selected with emphasis on slidability, durability, etc. without considering wearability.

(2) Fluorine fibers are generally expensive, but there is also an effect that the cost can be reduced by forming the glass sliding member 40 by mixing other inexpensive fibers.

(3) In the above-described manufacturing method, unlike the conventional technique, steps such as buffing and coating with an adhesive or the like are unnecessary, so that the production line is shortened and the equipment is simplified.

(4) The glass run 20 and the glass sliding member 40 are adhered to each other by using the heat welding of the adhesive thread 46, and no adhesive is used. In addition to being able to achieve down, there is no adhesion failure due to uneven application of adhesive.

(5) Since the rubber base 22 and the glass sliding member 40 are adhered to each other in a preheated state immediately after vulcanization of the rubber base, and this step can be performed on a series of production lines, the productivity is excellent. ing. Also, since the residual heat during vulcanization is used as the energy for heat welding during bonding, it also contributes to energy saving.

The present invention is not limited to the above-described embodiments, and can be implemented in various modes without departing from the scope of the invention, and the following modifications are possible, for example.

(1) FIG. 6 shows an embodiment in which the adhesive threads 56a and 56b are sewn into the glass sliding member 50. That is, adhesive threads 56a and 56b are sewn in parallel to both sides of the cloth body 51 of the glass sliding member 50. With such adhesive yarns 56a and 56b, it is possible to firmly adhere to the rubber substrate 22 by heat welding as in the above embodiment.

(2) In the above embodiment, the adhesive thread directly heat-welds the rubber substrate to bond the glass sliding member. However, the present invention is not limited to this, and the heat-welding property is provided between the glass sliding member and the rubber substrate. You may adhere using the film of. In this case, as the heat-welding film, a film that adheres to both the fiber interwoven with the fluorine fiber and the rubber substrate is used.

(3) As for the method of entwining the above-mentioned adhesive thread with the glass sliding member, if the adhesive thread is exposed from the surface of the glass sliding member so that it can be heat-welded to the rubber substrate, any weave, It may be sewn or woven. For example, in a double russel knitting in which a front cloth and a back cloth are knitted in an annular shape, an adhesive thread comes out on the back cloth side and is knitted so as to form a sliding portion or a decorative portion on the front cloth side.

(4) In the above embodiment, the adhesive yarn is heat-welded by utilizing the residual heat immediately after vulcanization of the rubber substrate. However, the present invention is not limited to this, and either one or both of the rubber substrate and the adhesive yarn side is used. May be heated and heat-welded.

(5) The glass sliding member may have any shape as long as it contains a fluororesin and has excellent slidability, and may be a non-woven fabric or a fluororesin sheet material in addition to the woven cloth. Good. In this case, an adhesive thread is sewn into the glass sliding member.

(6) In each of the above embodiments, a glass run having a substantially U-shaped cross section attached to the window frame of the door is shown as an example. However, the glass run is mounted on the belt line portion of the door and slides on the side surface of the windshield. It may be used for a door glass inner or a door glass outer having a lip portion to open.

[0031]

[Effect of device]

 As described above, according to the glass run of the present invention, the sliding body including the fluororesin uses the glass sliding member in which the adhesive thread formed of the material different from the fluororesin is woven, sewn or knitted. By adhering to the rubber substrate via the adhesive thread, the glass sliding member is firmly adhered via the adhesive thread, and at the same time, the excellent sliding property of the fluorofiber can be obtained.

[Brief description of drawings]

FIG. 1 is an external view showing the external appearance of an automobile.

FIG. 2 is a sectional view showing a glass run according to a first embodiment of the present invention.

FIG. 3 is an explanatory view for enlarging and explaining the glass sliding member of the embodiment.

FIG. 4 is an explanatory view for enlarging and explaining the glass sliding member of the embodiment.

FIG. 5 is an explanatory diagram illustrating a state in which a glass sliding member is bonded to the rubber substrate of the example.

FIG. 6 is a perspective view showing a state before heat-welding a glass sliding member in a glass run according to a second embodiment.

FIG. 7 is a sectional view showing a conventional glass run.

[Explanation of symbols]

 20 ... Glass run 22 ... Rubber base 40 ... Glass sliding member 42 ... Weft thread 44 ... Warp thread 46 ... Adhesive thread 50 ... Glass sliding member 51 ... Cloth body 56a, 56b ... Adhesive thread

Claims (1)

[Scope of utility model registration request] 1. A glass run comprising an EPDM rubber substrate that slides on a window glass, wherein a glass sliding member is laminated on the sliding portion, wherein the glass sliding member comprises a sliding body containing a fluororesin. A glass run, which is formed of a material different from that of the fluororesin, is woven into the sliding body, is sewn in or knitted, and has an adhesive thread bonded to the rubber base side.