# US 2014/0152004 A1 · Oil Pipe Connection Device for a Hydraulic Brake > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0152004 A1 - Document ID: US20140152004A1 - Status: Published application - Kind: A1 - Application number: 14/093,585 - Filed: 2013-12-02 - Published: 2014-06-05 - Earliest claimed: 2012-12-05 - Assignees: Lee Chi Enterprises Co., Ltd. - Applicants: Lee Chi Enterprises Co., Ltd. - Inventors: Shih-Ching Ko - Web page: https://patentgrep.com/patent/US20140152004A1 ## CPC - B60T 17/043: {Brake line couplings, air hoses and stopcocks} - B60T: VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES ## Abstract An oil pipe connection device has a base, an oil pipe, a pipe connector and a securing nut. The base has a connection hole and an abutting shoulder. The pipe connector is mounted in the connection hole and has a tapered head, an insertion segment, a pressing collar and an engaging recess. The tapered head abuts with the abutting shoulder. The insertion segment is inserted tightly into an end of the oil pipe. The pressing collar is around the insertion segment and has an inclined guiding surface. The engaging recess is formed between the pressing collar and the insertion segment and holds the end of the oil pipe inside. The securing nut is mounted around the oil pipe, is connected with the connection hole in a threaded manner and has an inclined guiding surface abutting with the inclined guiding surface on the pressing collar. ## Claims ### Claim 1 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. ### Claim 2 (depends on 1) The oil pipe connection device as claimed in claim 1, wherein the base further has a conical surface formed between the connection hole and the abutting shoulder. ### Claim 3 (depends on 2) The oil pipe connection device as claimed in claim 2, wherein a slope of an outer surface of the tapered head of the pipe connection is smaller than a slope of the conical surface of the base. ### Claim 4 (depends on 3) The oil pipe connection device as claimed in claim 3, wherein the pipe connector is metal and the pressing collar has a stepped outer surface. ### Claim 5 (depends on 4) The oil pipe connection device as claimed in claim 4, wherein the pressing collar has the inclined guiding surface, an alignment flat surface and an inclined pressing surface formed in sequence toward the tapered head and on the end of the pressing collar away from the tapered head. ### Claim 6 (depends on 5) The oil pipe connection device as claimed in claim 5, wherein the insertion segment is composed of multiple conical collars; and each conical collar has a flat guiding surface formed one an end of the conical collar. ### Claim 7 (depends on 2) The oil pipe connection device as claimed in claim 2, wherein the pipe connector is metal and the pressing collar has a stepped outer surface. ### Claim 8 (depends on 7) The oil pipe connection device as claimed in claim 7, wherein the pressing collar has the inclined guiding surface, an alignment flat surface and an inclined pressing surface formed in sequence on the end of the pressing collar away from the tapered head. ### Claim 9 (depends on 8) The oil pipe connection device as claimed in claim 8, wherein the insertion segment is composed of multiple conical collars; and each conical collar has a flat guiding surface formed one an end of the conical collar. ### Claim 10 (depends on 1) The oil pipe connection device as claimed in claim 1, wherein the pipe connector is metal and the pressing collar has a stepped outer surface. ### Claim 11 (depends on 10) The oil pipe connection device as claimed in claim 10, wherein the pressing collar has the inclined guiding surface, an alignment flat surface and an inclined pressing surface formed in sequence on the end of the pressing collar away from the tapered head. ### Claim 12 (depends on 11) The oil pipe connection device as claimed in claim 11, wherein the insertion segment is composed of multiple conical collars; and each conical collar has a flat guiding surface formed one an end of the conical collar. ### Claim 13 (depends on 1) The oil pipe connection device as claimed in claim 1, wherein the insertion segment is composed of multiple conical collars; and each conical collar has a flat guiding surface formed one an end of the conical collar.