Method of mounting a bearing to an air compressor, and air compressor having a bearing mounted by the method
AssigneeUnik World Industrial Co., Ltd.
InventorWen-San CHOU
Life of this patent
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Abstract
A method of mounting a bearing to an air compressor including a shaft element having a first end and a second is disclosed, which includes the steps of: fixing the second end of the shaft element to a center of a gear; inserting the first end of the shaft element through a central hole of a bearing to have an annular step of the shaft element abutted an inner ring of the bearing; and hitting the first end of the shaft element by a striking tool to form an expanded or flared edge on a top face of the first end of the shaft element. With the method, the bearing can be firmly fixed between the expanded or flared edge and the annular step of the shaft element.
Claims6
A method of mounting a bearing to an air compressor which includes:
- a base frame defining a first mounting hole, which allows a pinion driven by a motor to pass, and a second mounting hole for receiving therein a bearing which has an outer ring, an inner ring defining a central hole, and a plurality of rolling balls disposed between the outer ring and the inner ring;
- a cylinder fixed to or formed integrally with the base frame;
- an air storage container provided with one or more outlet tubes and connected with the cylinder;
- a gear in mesh with the pinion;
- a crank mechanism including a counterweight provided on the gear, and a shaft element having a first end and a second end, wherein the second end has a diameter greater than the first end, thus forming an annular step therebetween;
- the method comprising the steps of:
- fixing the second end of the shaft element to a center of the gear;
- inserting the first end of the shaft element through the central hole of the bearing to have the annular step of the shaft element abutted the inner ring of the bearing;
- and
- hitting the first end of the shaft element by a striking tool to form an expanded or flared edge on a top face of the first end of the shaft element;
- whereby the bearing is firmly fixed between the expanded or flared edge and the annular step of the shaft element.
An air compressor, comprising:
- a base frame defining a first mounting hole, which allows a pinion driven by a motor to pass, and a second mounting hole for receiving therein a bearing which includes an outer ring, an inner ring defining a central hole, and a plurality of rolling balls disposed therebetween;
- a cylinder fixed to or formed integrally with the base frame;
- an air storage container provided with one or more outlet tubes (411, 412), and connected and communicated with the cylinder;
- a gear in mesh with the pinion;
- and
- a crank mechanism including a counterweight provided on the gear, a crankpin connected with a piston, and a shaft element having a first end and a second end, wherein the second end has a diameter greater than the first end, thus forming an annular step therebetween, the second end of the shaft element being fixed to a center of the gear, the first end of the shaft element being inserted through the central hole of the inner ring of the bearing and being hitted by a striking tool to form an expanded or flared edge on a top face of the first end of the shaft element, so that the bearing is firmly fixed between the expanded or flared edge and the annular step of the shaft element.
Dependencies are inferred from the claim text.