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In a check plate supporting structure, a check plate of a door checker interposed between a door support and a door supported on the door support is turnably supported on a bracket mounted to the door support. A pivot secured to the bracket is relatively turnably press-fitted into a polygonal bearin

In a check plate supporting structure, a check plate of a door checker interposed between a door support and a door supported on the door support is turnably supported on a bracket mounted to the door support. A pivot secured to the bracket is relatively turnably press-fitted into a polygonal bearing bore defined in the check plate. Large numbers of pressure-contact portions and gaps are alternately arranged between an inner peripheral surface of the bearing bore and an outer peripheral surface of the pivot in circumferential directions thereof. Thus, the looseness between the pivot secured to the bracket and the bearing bore in the check plate can be eliminated without excessive increase in turning torque of the check plate relative to the bracket, thereby preventing generation of an abnormal sound during opening and closing of the door and facilitating manual mounting of the door checker to the door support.

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1. A structure for pivotally supporting a check plate of a door checker interposed between a door support and a door supported on said door support, said check plate being turnably supported on a bracket mounted to said door support, wherein a pivot secured to said bracket is relatively turnably p

1. A structure for pivotally supporting a check plate of a door checker interposed between a door support and a door supported on said door support, said check plate being turnably supported on a bracket mounted to said door support, wherein a pivot secured to said bracket is relatively turnably press-fitted into a polygonal bearing bore defined in said check plate, and large numbers of pressure-contact portions and gaps are alternately arranged in circumferential directions thereof between an inner peripheral surface of said bearing bore and an outer peripheral surface of said pivot. 2. A structure for pivotally supporting a check plate of a door checker according to claim 1, wherein at least a bearing portion of said check plate, which defines said bearing bore, is made of a synthetic resin.3. A structure for pivotally supporting a check plate of a door checker according to claim 2, wherein said check plate comprises a plate body made of a metal, and a cover member made of a synthetic resin and mold-coupled to said plate body to cover said plate body, and said bearing portion in close contact with an inner peripheral surface of a through-bore provided in said plate body is integrally connected to the cover member.