Integrally formed weather strip

• US 5,446,998 A
• Filed: 08/17/1994
• Issued: 09/05/1995
• Est. Priority Date: 01/31/1992
• Status: Expired due to Fees

• Current Assignee: Tokai Kogyo Kabushiki Kaisha
• Original Assignee: Tokai Kogyo Kabushiki Kaisha
• Inventors: Arima, Hidetoshi
• Primary Examiner(s): KANNAN, PHILIP
• Application Number:
  US08/291,845
• Time in Patent Office: 384 Days
• Field of Search: 49/479.1, 49/490.1, 49/498.1, 49/476.1
• US Class Current: 49/490.1
• CPC Class Codes: B29C 2791/007 Using fluid under pressure
• CPC Class Codes: B29C 48/001 Combinations of extrusion moulding with other shaping operations
• CPC Class Codes: B29C 48/11 comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
• CPC Class Codes: B29C 48/12 Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
• CPC Class Codes: B29C 48/1472 at the die nozzle exit zone
• CPC Class Codes: B29C 48/302 being adjustable, i.e. having adjustable exit sections
• CPC Class Codes: B29C 48/91 Heating, e.g. for cross linking
• CPC Class Codes: B29C 48/9105 of hollow articles
• CPC Class Codes: B29L 2031/26 Sealing devices, e.g. packaging for pistons or pipe joints
• CPC Class Codes: B60J 10/16 consisting of two or more plastic materials having different physical or chemical properties B60J10/17 takes precedence
• CPC Class Codes: B60J 10/22 having varying cross-section in the longitudinal direction
• CPC Class Codes: B60J 10/24 having tubular parts
• CPC Class Codes: B60J 10/248 having two or more tubular cavities, e.g. formed by partition walls
• CPC Class Codes: B60J 10/277 for facilitating specific deformation of sealing parts, e.g. for ensuring proper folding
• CPC Class Codes: B60J 10/84 arranged on the vehicle body
• CPC Class Codes: B60J 10/86 arranged on the opening panel

Abstract

A weather strip having first and second weather strip sections integrally formed as a unit. Each of the weather strip sections includes a sealing portion and an engagement portion. The sealing portion and the engagement portion of each of the weather strip sections are formed of first and second molding materials, respectively. The sealing portion of the first weather strip section having a cross-sectional configuration which is different from the sealing portion of the second weather strip section. The second weather strip section is harder than the first section.

Claims

1. A particularly shaped weather strip for use on an automobile body to seal a clearance formed between an automobile door and a door opening of the body, comprising first and second weather strip sections integrally formed as a single unit, each of said first and second weather strip sections including a sealing portion to seal said clearance and an engagement portion to be engaged with the body, said sealing portion and said engagement portion of each of said first and second weather strip sections being of different kinds of materials, respectively,

said sealing portion of said first weather strip section has a substantially oval cross-sectional configuration, and said sealing portion of said second weather strip section has a substantially depressed rectangular cross-sectional configuration.

2. The weather strip as defined in claim 1, wherein said sealing portion and said engagement portion of each of said first and second weather strip sections are of sponge rubber and semi-hard rubber, respectively.

3. An elongate weather strip for use on an automobile body to seal the entire clearance formed between an automobile door and the door opening of the body, comprising a first and a second weather strip section integrally formed as a single unit, each of said first and second weather strip sections including a sealing portion to seal said clearance and an engagement portion to be engaged with the body, said sealing portion and said engagement portion of each of said first and second weather strip sections having a different hardness and

the sealing portion of said first weather strip section being formed with an upper substantially oval cross-sectional configuration, and the sealing portion of said second weather strip section includes a substantially rectangular cross sectional configuration having an upper portion forming a groove.

4. The weather strip as defined in claim 3, wherein said sealing portion and said engagement portion of said first weather strip section is sponge rubber and the second weather strip section is semi-hard rubber.

5. The weather strip as defined in claim 3 wherein the first weather strip section operates to seal along the door pillar and the second weather strip section operates to seal along the roof and the groove operates to guide rainwater away from the roof.

6. A single length weather strip for use on an automobile body to seal the clearance formed between an automobile door and the door opening of the automobile body, comprising first and second weather strip sections integrally formed as a single unit, each of said first and said second weather strip section including a sealing portion to seal said clearance and an engagement portion for engagement with the body, said sealing portion and said engagement portion of each of said first and second weather strip section materials having different hardness, said sealing portion of said first weather strip section includes an upper substantially oval cross-sectional configuration, and the sealing portion of said second weather strip section includes a substantially rectangular cross-sectional configuration with an upper portion forming a groove, the sealing portion and said engagement portion of said first weather strip section is sponge rubber, and said second weather strip section is heat treated sponge rubber having a hardness of semi-hard rubber.

7. An elongated weather strip for use on an automobile body to seal the clearance formed between an automobile door and the door opening of the body, comprising a first and a second weather strip section integrally formed as a single unit, each of said first and second weather strip sections including a sealing portion to seal said clearance and an engagement portion to be engaged with the body, said sealing portion and said engagement portion of each of said first and second weather strip sections having a different hardness, said sealing portion of the first weather strip section having a cross-sectional configuration which differs from the sealing portion of the second weather strip section, and said sealing portion of the second weather strip section having a heat treated portion of which the hardness is greater than the hardness of the sealing portion of the first weather strip section.