JPH0565634U - Weather strip for vehicle door - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent rattling of the door glass, improve the seal, and prevent abnormal noise when the door glass moves up and down. [Structure] A base 12, an upper lip body 15, and a lower lip body 20 are integrally provided. The lower lip body 20 has a lip 21 piece that extends substantially parallel to the upper lip body 15 from one side surface of the base body 12 in an upwardly inclined shape, and one end thereof is coupled to the tip of the upper inclined surface of the lip piece 21. Edge is upper lip body 20
And a lip piece 21 and a support piece 27 that is coupled to one side surface of the base body 12 and is curved upwards at a substantially intermediate position between the lip piece 21 and the lip piece 21 to form a hollow closed cross section. Lip piece 21
Has a thin-walled elastically deformable portion 22 formed near the base end thereof, and the lip body portion 23 of the lip piece 21 is formed in a thick-walled shape. A seal head portion 24 that is in contact with the surface extends in an upwardly inclined shape that is continuous with the lip body portion. The support piece 27 is mainly composed of an elastic body having high flexibility and elasticity.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a weather strip for a vehicle door.

[0002]

[Prior Art]

 Generally, a weather strip for a vehicle integrally includes a base body assembled to an upper edge portion of a door panel and upper and lower lip bodies extending from one side surface of the base body. Both of these lip bodies are elastically deformed by being pressed against the door glass surface, and due to the elastic force based on the elastic deformation, the sealing property between the door glass and the upper edge of the door panel and the rattling of the door glass (lateral vibration) ) Preventive measures are taken. Therefore, the greater the elastic force due to the elastic deformation of both the upper and lower lips, the more effective the sealing property and the prevention of rattling of the door glass.

Conventionally, as shown in FIG. 3 and FIG. 4, in a weather strip 11 ′, a lower lip body 20 ′ that cannot be visually recognized from the outside is formed in a hollow closed cross section, and a lower lip body 20 ′ is formed. There is an attempt to increase the elastic force of ´ and improve the sealing property and the prevention of rattling of the door glass.

[0004]

[Problems to be solved by the device]

 By the way, in the conventional structure shown in FIGS. 3 and 4, the lower lip body 20 'is formed into a hollow closed cross section with a substantially uniform thickness, and the lower lip body 20' is formed of a door glass 4 '. It is elastically deformed into a flat shape while being pressed by the glass surface. For this reason, the contact area of the lower lip body 20 'with the glass surface becomes very large, and thus the surface of the lower lip body 20' is provided with the flocked hair 25 'for improving the slipperiness. When the door glass 4 ′ is opened / closed (elevated), the frictional force of the lower lip body 20 ′ against the glass surface becomes large, and there is a problem that a tongue (a creaking noise) is generated in the rain or immediately after a car wash.

In view of the above-mentioned conventional problems, an object of the present invention is to prevent rattling of the door glass and improve the sealing property, and also to prevent abnormal noise from occurring when the door glass is moved up and down. A weather strip for a vehicle door is provided.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a base body that is assembled to the upper edge portion of a door panel of a vehicle door, and an upper lip body that extends from one side surface of the base body toward the door glass in an upwardly inclined shape. A lower lip body that is located below the upper lip body and protrudes from one side surface of the base body, the lower lip body being substantially parallel to the upper lip body from the one side surface of the base body. An upwardly inclined lip piece is joined to one side of the base body at one end of the lip piece, which is connected to the tip of the upper inclined surface of the lip piece, and the other end of the lip piece at a substantially intermediate position between the upper lip body and the lip piece. And a supporting piece that is coupled upward and is curved upward, and is formed into a hollow closed cross-section.The lip piece has a thin-walled elastically deformable portion formed near its base end and The lip body is thickly formed, At the tip of the lip barrel, a seal head in contact with the door glass surface is extended in an upwardly inclined shape continuous with the lip barrel, and the support piece is mainly composed of an elastic body having a high degree of flexibility and elasticity.

[0007]

[Action]

 In the weather strip for a vehicle door configured as described above, when the weather strip is assembled to the upper edge of the door panel, the lower lip body has the same lip piece while elastically deforming the support piece. The elastically deformed portion at the base end of is elastically deformed with the bending point. The supporting piece has an upwardly curving shape and is mainly composed of an elastic body having high flexibility and elasticity, while the lip body of the lip piece is formed thickly, so that the lower lip body has a certain directionality. Is elastically deformed. In this way, by giving directionality to the deformation direction of the lower lip body and applying elastic force due to elastic deformation of the lip piece and the support piece to the seal head portion at the tip of the lip piece, only the seal head portion Presses against the door glass surface.

[0008]

【Example】

 (Embodiment 1) Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS. In FIG. 1, a mounting clip 3 is attached to an upper edge flange 2 of a door panel 1 of a vehicle door. The weather strip 11 integrally includes a base 12 and upper and lower lip bodies 15 and 25.

The base body 12 is formed by bending a metal plate into a substantially inverted U-shaped cross section, and the mounting clip 3 is fitted in the groove thereof. On one side surface 13 of the base body 12, upper and lower lip bodies 15 and 20 are integrally formed by extrusion molding of an elastomer (elastic body) such as synthetic resin or rubber.

The upper lip body 15 extends from the upper portion of the elastomer layer 13 on one side surface of the base body 12 toward the door glass 4 in an upwardly inclined shape. Further, a thin elastic deformation portion 16 is formed at the base of the upper lip body 15, and the adhesive layer applied from the central portion to the tip of the lower inclined surface of the upper lip body 15 is made of nylon fiber due to static electricity. Flocked hair 17 is applied.

The lower lip body 20 is provided with a lip piece 21 and a support piece 27 and has a hollow closed cross section. The lip piece 21 extends substantially in parallel with the upper lip body 15 from the lower portion of the elastomer layer 13 on one side surface of the base body 12 in an upwardly inclined shape. A thin elastic deforming portion 22 is formed near the base end of the lip piece 21, and the thickness gradually increases from the elastic deforming portion 22 to the lip body portion 23. Further, at the tip of the lip body portion 23 of the lip piece 21, a seal head portion 24 that contacts the glass of the door glass 4 is extended in an upwardly inclined shape that is continuous with the lip body portion 23. Further, on the lower inclined surface of the lip piece 21, the adhesive layer applied from a part of the elastically deformable portion 22 to the lip body portion 23 and the seal head portion 24 has a hair transplant 25 made of nylon fiber due to static electricity. Has been applied.

One end of the support piece 27 is connected to a boundary portion between the lip body portion 23 and the seal head portion 24 near the tip of the upper inclined surface of the lip piece 21, and the other end is connected to the upper lip body 15 and the lip portion. In a state where it is bonded to the elastomer layer 13 on one side surface of the base body 12 at a position approximately at the middle height with respect to the piece 21, it projects upward in a curved shape. Further, the support piece 27 is formed of an elastomer having a high flexibility and soft elasticity. In this embodiment, the elastomer layer 13 of the substrate 12, the upper lip body 15 and the lip piece 21 of the lower lip body 20 are made of synthetic rubber such as EPDM having a hardness (HS) of 60 to 70 degrees. The support piece 27 of the body 20 is made of synthetic rubber such as EPDM having a hardness (HS) lower by 10 to 30 degrees than the lip piece 21.

The first embodiment is configured as described above. Therefore, in a state where the weather strip 11 is assembled to the upper edge flange 2 of the door panel 1 by the mounting clip 3, the upper and lower lip bodies 15 and 20 are elastically deformed with their elastically deformed portions at flexion points 16 and 22, respectively. Be transformed.

In particular, the lower lip body 20 is elastically deformed by the lip piece 21 elastically deforming the support piece 27 while the elastically deforming portion 22 at the base end of the lip piece 21 is a bending point. Furthermore, while the support piece 27 has an upwardly curved shape and is formed of an elastomer having a high degree of flexibility and elasticity, while the body portion 23 of the lip piece 21 cup is formed thick, the lower lip body 20 is , Is elastically deformed with a certain directionality.

In this way, the lower lip body 20 is provided with directionality in the deformation direction, and the elastic force based on the elastic deformation of the lip piece 21 and the support piece 27 acts on the seal head 24, and the seal head 24 receives the elastic force. By pressing only the portion 24 against the glass surface of the door glass 4, the sealability can be improved and the rattling of the door glass can be reliably prevented. Moreover, as shown in FIG. 2, only the seal head 24 of the lower lip body 20 comes into contact with the glass surface of the door glass 4 in a state where the lower lip body 29 is elastically deformed, and the other portions are not brought into contact with each other. Therefore, it is possible to reduce the frictional force of the lower lip body 20 against the glass surface as much as possible, and it is possible to prevent the generation of abnormal noise (scratching noise) when the door glass 4 is moved up and down in the rain or immediately after washing the car.

Further, in the first embodiment, the support piece 27 of the lower lip body 20 is made of EPDM having a hardness lower by 10 to 30 degrees than the lip piece 21 and is rich in flexibility and elasticity. Therefore, the support piece 27 is made thicker than the one formed of EPDM having a hardness of 60 to 70 degrees, and the elastic force of the lower lip body 20 is set to the desired elastic force without excess or deficiency. can do. Further, even if there is a slight variation in the wall thickness of the support piece 27, it is possible to reduce the influence on the elastic force of the lower lip body 20 as a whole, and there is a disadvantage that the elastic force is insufficient or insufficient. It can be prevented.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIG. In the second embodiment, the support piece 27 is constructed by mainly forming a flexible sponge layer 27a such as foamed urethane rubber, and providing a thin coating protective layer 27b on the outer surface of the sponge layer 27a. .. The cover protective layer 27b is formed of EPDM having a hardness of 60 to 70 degrees, which is similar to that of the lip piece 21 of the lower lip body 20. Since other parts and members are configured in the same manner as in the first embodiment, the same parts and members are designated by the same reference numerals and the description thereof is omitted.

[0018]

[Effect of the device]

 As described above, according to the present invention, the lower lip body is formed by the lip piece and the support piece to have a hollow closed cross section, and the deformation thereof has directionality to obtain a stable elastic force. It is possible to prevent backlash of the door glass and improve the sealing property. Moreover, when the lower lip body is elastically deformed, the contact area of the lower lip body with respect to the door glass surface can be made as small as possible by bringing only the seal head portion at the tip of the lip piece into contact with the door glass surface. It is possible to prevent the generation of abnormal noise when the door glass moves up and down in the rain or immediately after washing the car. Further, since the supporting piece is mainly composed of an elastic body having high flexibility, even if there is a slight variation in the thickness of the supporting piece, it is possible to reduce the influence on the elastic force of the entire lower lip body. Therefore, it is possible to prevent problems caused by the excess and deficiency of the elastic force.

[Brief description of drawings]

FIG. 1 is a sectional view showing a weather strip according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing a state in which both upper and lower lip bodies of the weather strip are elastically deformed.

FIG. 3 is a sectional view showing a weather strip according to a second embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a conventional weather strip.

FIG. 5 is a sectional view showing a state in which both upper and lower lip bodies of the weather strip are elastically deformed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door panel 11 Weather strip 12 Base material 15 Upper lip body 20 Lower lip body 21 Lip piece 22 Elastic deformation part 23 Lip body part 24 Seal head part 27 Support piece

Claims (1)

[Scope of utility model registration request] 1. A base body assembled to an upper edge portion of a door panel of a vehicle door, an upper lip body extending upwardly from one side surface of the base body toward a door glass, and a lower side of the upper lip body. And a lower lip body projecting from one side surface of the base body, and the lower lip body extends upward from the one side surface of the base body substantially parallel to the upper lip body. With a lip piece,
A support piece whose one end is connected to the tip of the upper inclined surface of the lip piece and the other end is connected to one side surface of the base body at a substantially intermediate position between the upper lip body and the lip piece and which is curved upward. Is formed in a hollow closed cross-section, and the lip piece is formed with a thin-walled elastically deformable portion near the base end thereof, and the lip body of the lip piece is formed in a thick-walled shape, and At the tip of the lip barrel, a seal head contacting the surface of the door glass is extended in an upwardly inclined shape continuous with the lip barrel, and the support piece is mainly composed of an elastic body rich in soft elasticity. Characteristic vehicle door weather strip.