Oil Pipe Connection Device for a Hydraulic Brake

An oil pipe connection device for a hydraulic brake comprising:

• a base having
• a connection hole defined in the base and having
• a diameter;
• an inner surface;
• a bottom surface;
• and
• an inner thread formed in the inner surface;
• and
• a bottom hole defined in the bottom surface and having a diameter smaller than the diameter of the connection hole to form an abutting shoulder between the connection hole and the bottom hole;
• an oil pipe connected with the base and having an end mounted in the connection hole;
• a pipe connector mounted in the connection hole and having
• a tapered head formed on a first end of the pipe connector and abutting with the abutting shoulder;
• an insertion segment formed on and extending from a second end of the pipe connector and inserted tightly into an end of the oil pipe;
• a pressing collar formed on the second end of the pipe connector around the insertion segment, mounted around the end of the oil pipe into which the insertion segment is inserted and having an inclined guiding surface formed on an end of the pressing collar away from the tapered head;
• and
• an engaging recess formed between the pressing collar and the insertion segment and holding the end of the oil pipe into which the insertion segment is inserted inside;
• and
• a securing nut mounted around the end of the oil pipe into which the insertion segment is inserted, connected with the connection hole in a threaded manner and having
• an outer thread screwed with the inner thread of the connection hole;
• and
• an inclined guiding surface formed in an inner surface of an end of the securing nut and abutting with the inclined guiding surface on the pressing collar.