Bicycle saddle height adjustment device

The present invention relates to a device for adjusting the height of a bicycle saddle, the device comprising a covering member and a cylinder head configured in an outer enclosure cylinder and having an inner enclosure cylinder installed in the cylinder head. The cylinder head has a control valve means configured therein to control oil fluid and has an oil covering configured therein to store oil fluid. A post head provided with a height control member and an air injection member is combined with a seat post, a saddle coupling means is configured above the post head, and a rod member including a piston is configured below the post head, thereby allowing the seat post to come into and out of the outer enclosure cylinder and allowing the rod member to come into and out of the inner enclosure cylinder. The inner enclosure cylinder and the height control member of the post head are coupled to each other by a connection line, and compressed fluid is stored in the outer enclosure cylinder and the seat post, thereby adjusting the lift of the seat post operated by the compressed fluid to a certain height depending on the length of the connection line. The covering member of the outer enclosure cylinder has a withdrawing means, which is provided with a withdrawing connection line, configured therein and is coupled to the control valve means by the withdrawing connection line to enable the oil fluid stored in the inner enclosure cylinder to come in and out while the control valve means is opened and closed by the withdrawal of the withdrawing connection line, thereby adjusting the height of the seat post by the compressed fluid and the oil fluid. Therefore, the height of a bicycle saddle can be adjusted accurately and conveniently with simple configuration. 본 발명은 자전거 안장 높낮이 조절장치에 관한 것으로, 외함실린더에는 커버링부재 및 실린더헤드가 구성되어 실린더헤드에는 내함실린더가 입설되며, 또한 실린더헤드에는; 오일유체를 제어조절하는 제어발브수단 및 오일유체가 저장되는 오일커버링이 구성되는 것과; 시트포스트에는; 높이조절부재 및 에어주입부재가 제공된 포스트헤드가 결합된채, 상기 포스트헤드 상측으로 안장결합수단이 구성됨과 아울러 포스트헤드 하측으로 피스톤이 포함된 로드부재가 구성되어 시트포스트는 외함실린더 내ㆍ외측으로 출입되며, 또한 상기 로드부재는 내함실린더 내ㆍ외부로 출입되는 것과; 상기 내함실린더는와 포스트헤드의 높이조절부재는 연결줄로 상호 결속되며, 상기 외함실린더와 시트포스트에는 압축유체가 저장되어 연결줄의 길이에 따라 압축유체로 작동되는 시트포스트의 상승작동이 일정 높이로 조절되는 것과; 외함실린더의 커버링부재에는; 인출연결줄이 제공된 인출수단이 구성된채, 상기 제어발브수단과 인출연결줄로 결속되어 인출연결줄의 인출에 따라 제어발브수단이 개폐됨과 아울러 내함실린더에 저장된 오일유체의 출입작용이 연출되는 특징으로 압축유체 및 오일유체에 의한 시트포스트의 높낮이가 조절되는 특징을 갖는 자전거 안장 높낮이 조절장치.