Opening/closing device for opening/closing body

Patent metadata

Field	Value
Publication number	US-10323449-B2
Application number	US-201415107370-A
Country	US
Kind code	B2
Filing date	Dec 23, 2014
Priority date	Dec 25, 2013
Publication date	Jun 18, 2019
Grant date	Jun 18, 2019

Abstract

An opening and closing apparatus of an opening and closing member includes a support member including a first support wall portion and a second support wall portion, a support pin including axially opposed end portions, a pulley arranged between the first and second support wall portions, a transmission belt engaged with the pulley, and an electric drive source moving the transmission belt. The first support wall portion includes a penetration bore into which one of the axially opposed end portions of the support pin is inserted and a slit continuously provided to the insertion bore. An engagement portion is provided at an axial tip end of the support pin, the engagement portion including a step engageable with a peripheral edge portion of the penetration bore and a tapered portion connected to the step and reduced in diameter from the step towards a tip end of the engagement portion.

First claim

The invention claimed is:

1. An opening and closing apparatus for opening and closing an opening and closing member, comprising:
a support member including a first support wall portion and a second support wall portion which are arranged facing each other, the support member being made of resin;
a support pin including first and second axially opposed end portions which are inserted into the first support wall portion and the second support wall portion respectively;
a pulley arranged between the first support wall portion and the second support wall portion, the support pin is disposed in the pulley;
a transmission belt engages the pulley and is linked to the opening and closing member; and
an electric drive source moving the transmission belt which rotates the pulley around an axis of the support pin for opening and closing the opening and closing member, wherein
the first support wall portion includes a penetration bore into which the first axially opposed end portion of the support pin is inserted and a slit continuous with the penetration bore, the slit being provided for inhibiting a weld from existing at the first support wall portion after the first support wall portion is formed,
an engagement portion is provided at the first axially opposed end portion of the support pin,
the engagement portion including
a first step engageable with a peripheral edge portion of the penetration bore,
a first tapered portion connected to the first step and reducing in diameter as the first tapered portion extends from the first step towards a distal end of the engagement portion,
a second step connected to a distal end of the first tapered portion and having a diameter larger than a diameter of the distal end of the first tapered portion, and
a second tapered portion connected to the second step and reduced reducing in diameter as the second tapered portion extends in diameter from the second step towards the distal end of the engagement portion.

2. The opening and closing apparatus according to claim 1 , wherein an inclination angle of the second tapered portion relative to an axis of the support pin is greater than an inclination angle of the first tapered portion relative to the axis of the support pin.

3. The opening and closing apparatus according to claim 1 , wherein a maximum diameter of the second tapered portion is smaller than a maximum diameter of the first tapered portion.

4. The opening and closing apparatus according to claim 1 , wherein the first support wall portion includes a protective wall extending from the first support wall portion at least the same distance the distal end of the engagement portion extends from the first support wall portion to surround the engagement portion.

5. The opening and closing apparatus according to claim 1 , wherein the pulley includes a pin penetration bore in which the support pin is disposed and a bearing mounting bore which has a diameter greater than a diameter of the pin penetration bore, the opening and closing apparatus further including:
a bearing including an outer race press-fitted into the bearing mounting bore such that the outer race makes contact with an inner wall of the bearing mounting bore, an inner race in which the support pin is disposed, and a rolling element arranged between the outer race and the inner race; and
the support pin is disposed in a spacer which makes contact with the inner race and one of the first and second support wall portions.

6. The opening and closing apparatus according to claim 5 , wherein the pulley includes a body and a plate portion,
the body including the bearing mounting bore which is cylindrically shaped, a cover wall portion, which includes the pin penetration bore, at a first end portion of the body, and a first retainer portion protruding radially outward from the first end portion of the body,
the plate portion including an insertion portion which is disposed in the bearing mounting bore and which is cylindrically shaped, a second retainer portion making contact with a second end portion of the body and protruding radially outward relative to the insertion portion, and a guide flange protruding radially inward relative to the insertion portion.

7. The opening and closing apparatus according to claim 6 , wherein the spacer engages with the plate portion.

8. An opening and closing apparatus for opening and closing an opening and closing member, comprising:
a support member including a first support wall portion and a second support wall portion which are arranged facing each other;
a support pin including first and second axially opposed end portions which are inserted into the first support wall portion and the second support wall portion respectively;
a pulley arranged between the first support wall portion and the second support wall portion and including a pin penetration bore in which the support pin is disposed and a bearing mounting bore which has a diameter greater than a diameter of the pin penetration bore;
a bearing including an outer race press-fitted into the bearing mounting bore such that the outer race makes contact with an end wall of the bearing mounting bore in an axial direction of the pulley, an inner race into which the support pin is inserted, and a rolling element arranged between the outer race and the inner race;
a transmission belt engages the pulley and is linked to the opening and closing member;
an electric drive source moving the transmission belt which rotates the pulley around the support pin for opening and closing the opening and closing member; and
the support pin is disposed in a spacer, the spacer engages the inner race and one of the first and second support wall portions, wherein
the pulley includes a body and a plate member,
the body includes the bearing mounting bore which is cylindrically shaped, a cover wall portion, which includes the pin penetration bore, at a first end portion of the body, and a first retainer portion protruding radially outward from the first end portion of the body,
the plate portion includes an insertion member which is disposed in the bearing mounting bore and which is cylindrically shaped, a second retainer portion making contact with a second end portion of the body and protruding radially outward relative to the insertion portion, and a guide flange protruding radially inward relative to the insertion portion.

Assignees

• Aisin Seiki

Inventors

• Suzuki Seiichi
• Sakai Shin
• Nakanishi Eisuke

Classifications

• E05F15/646

  allowing or involving a secondary movement of the wing, e.g. rotational or transversal · CPC title

• E05F15/655

  specially adapted for vehicle wings · CPC title

• E05Y2201/434

  Electromotors; Details thereof · CPC title

• E05F15/643 Primary

  operated by flexible elongated pulling elements, e.g. belts, chains or cables (by flexible elongated push-pull mechanisms E05F15/635) · CPC title

• B60J5/047

  characterised by the opening or closing movement · CPC title