公开(公告)号：WO99042356A1

公开(公告)日：1999-08-26

申请号：PCT/CN1998/000022

申请日：1998-02-18

IPC: B62K15/00 ,  B62K19/18

CPC classification number: B62K15/006

Abstract: A pivoting and locking means for the frame tubes of a foldable bicycle comprises a front frame tube and a rear frame tube, wherein a front locking sleeve and a rear locking sleeve are joined on said front and rear frame tubes respectively by means of screws, a front connecting arm and a rear connecting arm are fixed on said front and rear locking sleeves respectively and are pivotally joined together by a hinged shaft, a locking plate is fixed on the rear end of said front frame tube and a mounting plate is fixed on the front end of said rear locking sleeve, an elongated hole is provided in said locking plate and a T-shaped locking member is fixed on said mounting plate, which extends along the axial direction of said rear frame tube and can be inserted into said hole. When the front frame tube and the rear frame tube are pivotally joined around the hinged shaft, they can be locked or released by the rotation of said T-shaped locking member in said hole, which is caused by the rotation of the front and rear connecting arms around the axis of the frame tube.

Abstract translation: 用于可折叠自行车的框架管的枢转和锁定装置包括前框架管和后框架管，其中前锁定套和后锁定套分别通过螺钉连接在所述前框架管和后框架管上， 前连接臂和后连接臂分别固定在所述前和后锁定套筒上，并通过铰接轴枢轴连接在一起，锁定板固定在所述前框架管的后端，并且安装板固定在 所述后锁定套筒的前端，在所述锁定板上设置有长孔，并且在所述安装板上固定有T形锁定件，所述安装板沿着所述后框架管的轴向延伸并且可插入所述孔中。 当前框架管和后框架管围绕铰接轴枢轴连接时，它们可以通过所述孔中的所述T形锁定构件的旋转而被锁定或释放，这由前后连接 臂围绕框架管的轴线。

公开(公告)号：WO1983001763A1

公开(公告)日：1983-05-26

申请号：PCT/DE1982000216

申请日：1982-11-11

Applicant: GRÜNFELD, Detmar

IPC: B62K19/18

CPC classification number: B22D19/045 ,  B29C45/14614 ,  B62K19/18 ,  Y10T29/49988 ,  Y10T403/475

Abstract: The connections between portions of bicycle frames or forks, comprised of tubes, particularly the connections to the steering tube (9), to the crank gear bearing (10) and to be saddle tube (11), comprise at least one first tube (1) connected by its preformed end (6') to the periphery of a second tube (2) by means of an extruded material (12). The end of the first tube is enlarged and adapted to the periphery of the second tube, while the extruded material is plastic material. Furthermore, the ends may be adhered, respectively, to the periphery of other tubes. In addition to the tubes forming the frame itself, the rear portion of the bicycle may also be connected, by its ends, to the crank gear bearing (10) and to the saddle tube (11) by means of the extruded plastic material.

Abstract translation: 由管子组成的自行车车架或叉车部分之间的连接，特别是与转向管（9）的连接，曲柄轴承（10）和鞍形管（11）的连接包括至少一个第一管（1 ）通过其预成型端（6'）通过挤压材料（12）连接到第二管（2）的周边。 第一管的端部被扩大并适应于第二管的周边，而挤出的材料是塑料材料。 此外，端部可以分别粘附到其它管的周边。 除了形成框架本身的管子之外，自行车的后部还可以通过其端部通过挤出的塑料材料连接到曲柄轴承（10）和鞍形管（11）。