Protector with sensor and method of molding end part of the same

• US 9,605,470 B2
• Filed: 03/05/2015
• Issued: 03/28/2017
• Est. Priority Date: 03/18/2014
• Status: Active Grant

• Current Assignee: Nishikawa Rubber Company Limited
• Original Assignee: Nishikawa Rubber Company Limited
• Inventors: Matsumoto, Michihiko, Hirakawa, Yuzo
• Primary Examiner(s): Walsh, Ryan
• Application Number:
  US14/639,764
• Publication Number:
  US 20150267457A1
• Time in Patent Office: 754 Days
• US Class Current: 1/1
• CPC Class Codes: B29C 45/14467 Joining articles or parts of a single article B29C45/14377, B29C45/14385, B29C45/14581, B29C45/14614 and B29C45/006 take precedence
• CPC Class Codes: B29K 2023/16 EPM, i.e. ethylene-propylene copolymers; EPDM, i.e. ethylene-propylene-diene copolymers; EPT, i.e. ethylene-propylene terpolymers
• CPC Class Codes: B60J 10/24 having tubular parts
• CPC Class Codes: B60J 10/80 specially adapted for opening panels, e.g. doors for non-fixed roofs B60J10/90
• CPC Class Codes: B60J 10/82 for movable panels in roofs
• CPC Class Codes: E05F 15/44 responsive to changes in electrical conductivity
• CPC Class Codes: E05F 15/443 specially adapted for vehicle windows or roofs
• CPC Class Codes: E05F 15/73 responsive to movement or presence of persons or objects
• CPC Class Codes: E05Y 2600/40 Mounting location; Visibility of the elements
• CPC Class Codes: E05Y 2800/46 Injection moulding in general B29C45/00
• CPC Class Codes: E05Y 2900/531 Doors
• CPC Class Codes: E05Y 2900/542 Roof panels
• CPC Class Codes: G01D 11/16 Elements for restraining, or preventing the movement of, parts, e.g. for zeroising caging of moving parts when not in use G01D11/20
• CPC Class Codes: G01D 11/24 Housings ; Casings for instruments
• CPC Class Codes: G01D 5/14 influencing the magnitude of a current or voltage
• CPC Class Codes: G01L 1/005 by electrical means and not provided for in G01L1/06 - G01L1/22

Abstract

A protector with a sensor is installed on a sliding door for detecting an object by touch between two core wires in a hollow part. In a terminal part of the protector with the sensor, the core wires drawn out are connected with legs of a resistor. A primary seal is formed by grinding a surface of the hollow part of the terminal part of an extrusion molded part, positioning a ground part on a die and covering wire connection parts and a side of another end of an insert while also covering the ground part by means of injection molding. A secondary seal is formed by means of the injection molding for coating a part formed with the primary seal for forming an external shape of a product.

Claims

1. A protector with a sensor comprising:

an installation base member operatively coupled on at least one of a peripheral edge of an opening/closing panel or a peripheral edge of an opening of the automobile body, said opening/closing panel being moveable between at least two positions to open and close said opening of an automobile body, the opening/closing panel being selected from a group consisting of a door of an automobile and a sun roof of an automobile; and

a hollow part unified with the installation base member, the hollow part having two core wires and a space provided therein, the space being positioned between the two core wires;

said installation base member and said hollow part forming an extrusion molded part made of a rubber like elastic body which is extrusion molded, in which;

when an object is disposed between said opening/closing panel and said opening and makes contact with said hollow part when said opening/closing panel is moved towards a closed position, an electric signal provides an indication that said object is in said opening; and

in a terminal part of said extrusion molded part, said core wires extend in a direction parallel to the peripheral edge of said opening are connected with two leads, said two leads being joined with a control unit or an electrical component, and a side of one end of an insert made of a non-conductive material is inserted in and fills up said space, and said terminal part of said extrusion molded part is die molded, wherein;

the terminal part of said extrusion molded part which is extrusion molded has a primary sealing layer and a secondary sealing layer formed thereon by means of injection molding respectively, said primary sealing layer covering wire connection parts of said core wires and said leads and a side of another end of said insert while also covering a ground part on a surface of said hollow part of the terminal part of said extrusion molded part, and said secondary sealing layer being piled on and covering the primary sealing layer, and said secondary sealing layer forming an external shape of a product.

2. A method of molding an end part of a protector with a sensor comprising:

an installation base member operatively coupled on at least one of a peripheral edge of an opening/closing panel or a peripheral edge of an opening of the automobile body, said opening/closing panel being moveable between at least two positions to open and close said opening of an automobile body, the opening/closing panel being selected from a group consisting of a door of an automobile and a sun roof of an automobile; and

a hollow part unified with the installation base member, the hollow part having two core wires and a space provided therein, the space being positioned between the two core wires;

said installation base member and said hollow part forming an extrusion molded part made of a rubber like elastic body which is extrusion molded, in which;

when an object is disposed between said opening/closing panel and said opening and makes contact with said hollow part when said opening/closing panel is moved towards a closed position, an electric signal provides an indication that said object is in said opening; and

in a terminal part of said extrusion molded part, said core wires extend in a direction parallel to the peripheral edge of said opening are connected with two leads, said two leads being joined with a control unit or an electrical component, and a side of one end of an insert made of a non-conductive material is inserted in and fills up said space, and said terminal part of said extrusion molded part is die molded, the method comprising;

forming a primary seal by grinding a surface of said hollow part of the terminal part of said extrusion molded part, positioning a ground part on a die and covering wire connection parts of said core wires and said leads and a side of another end of said insert by means of injection molding; and

forming a secondary seal on a part formed with the primary seal by means of the injection molding for forming an external shape of a product.

3. The method of molding the end part of the protector with the sensor as claimed in claim 2, the method further comprising:

grinding a surface of said hollow part beyond said primary seal; and

forming the secondary seal by means of the injection molding for covering a ground part on the surface of said hollow part.

4. The method of molding the end part of the protector with the sensor as claimed in claim 3, wherein:

a range subjected to grinding on the surface of said hollow part of the terminal part of said extrusion molded part comprises a primary ground range on a position close to an end surface of said extrusion molded part and a secondary ground range on a position far from said end surface, said primary seal being formed by means of the injection molding for covering said primary ground range, and said secondary seal being formed by means of the injection molding for covering said secondary ground range.

5. The method of molding the end part of the protector with the sensor as claimed in claim 4, wherein:

said extrusion molded part is made of EPDM, and die molding material of said primary seal and said secondary seal comprises TPO.

6. The method of molding the end part of the protector with the sensor as claimed in claim 3, wherein:

said extrusion molded part is made of EPDM, and die molding material of said primary seal and said secondary seal comprises TPO.

7. The method of molding the end part of the protector with the sensor as claimed in claim 2, wherein:

said extrusion molded part is made of EPDM, and die molding material of said primary seal and said secondary seal comprises TPO.