초록 ▼

In a tube fixing structure, a tube is fixed to a joint by means of a fixing member. The joint comprises a pipe whose one end is fitted into the tube, whose outside diameter is larger than an inside diameter of the tube, and whose outer surface is flattened with respect to the axial direction; and a

In a tube fixing structure, a tube is fixed to a joint by means of a fixing member. The joint comprises a pipe whose one end is fitted into the tube, whose outside diameter is larger than an inside diameter of the tube, and whose outer surface is flattened with respect to the axial direction; and a main body that is connected with the other end of the pipe. The fixing member comprises a cylindrical holder made of a flexible material, which holds a portion of the tube having the pipe fitted therein by cramping the portion from its outer periphery, the holder having a through hole into which the tube is coaxially disposed and a slit formed to reach the through hole.

대표청구항 ▼

What is claimed is: 1. A tube fixing structure in which a tube is fixed to a joint by means of a fixing member, the tube fixing structure comprising: a pipe having a first terminal end and a second terminal end, the first terminal end being fitted into the tube; and a main body that is connected wi

What is claimed is: 1. A tube fixing structure in which a tube is fixed to a joint by means of a fixing member, the tube fixing structure comprising: a pipe having a first terminal end and a second terminal end, the first terminal end being fitted into the tube; and a main body that is connected with the second terminal end of the pipe and includes a protruding portion which protrudes in an axial direction, contacts an end of the tube and covers a portion of the pipe; and the fixing member comprising a cylindrical holder made of a flexible material, which cramps a portion of the tube, the holder having a through hole into which the tube is coaxially disposed and a slit formed to reach the through hole; wherein the holder is disposed to cover, from an outside of the tube, the first terminal end of the pipe, and an area on the outer surface of the pipe, which area is covered by the holder, is made smooth. 2. The tube fixing structure according to claim 1, wherein the pipe is made of a metal. 3. The tube fixing structure according to claim 1, wherein the outside diameter of the pipe is gradually decreasing toward the first terminal end thereof, the structure satisfying the following formula: (φ2−φ1)/φ2≦0.1 where φ1 represents an outside diameter of the first terminal end of the pipe; and φ2 represents an outside diameter of the second terminal end of the pipe. 4. The tube fixing structure according to claim 1, wherein the slit of the fixing member is formed along an axial direction of the tube. 5. The tube fixing structure according to claim 1, wherein the slit of the fixing member is formed throughout an entire length of the through hole. 6. The tube fixing structure according to claim 1, wherein the fixing member further comprises a plurality of first grippers protruding, from portions where an outer surface of the holder intersects a line that passes through a center of the through hole and extends perpendicularly to a line that connects the slit with the center of the through hole, in a direction opposite to a direction extending from the center of the through hole to the slit, wherein confronting sides of the slit are spaced apart when the fixing member is in a normal state. 7. The tube fixing structure according to claim 6, wherein the first grippers are formed integral with the holder. 8. The tube fixing structure according to claim 6, further comprising a plurality of second grippers protruding, from portions where the outer surface of the holder intersects the line that passes through the center of the through hole and extends perpendicularly to the line that connects the slit with the center of the through hole, in the direction extending from the center of the through hole to the slit. 9. The tube fixing structure according to claim 8, wherein the second grippers are formed integral with the holder and the first grippers. 10. The tube fixing structure according to claim 6, wherein a confronting pair of the plurality of first grippers are deformable in such a manner that they can be partially in contact with each other. 11. The tube fixing structure according to claim 6, wherein boundaries between the holder and confronting sides of a confronting pair of the plurality of first grippers have rounded corners. 12. The tube fixing structure according to claim 1, further comprising: a plurality of protrusions protruding outward from such portions of an outer surface of the holder as to intersect a line that passes through a center of the through hole and extends perpendicularly to a line that connects the slit with the center of the through hole, the protrusions being formed integral with the holder; insertion holes formed throughout the respective protrusions along a direction of the line that connects the slit with the center of the through hole; and elastic plates that are slidably inserted into the insertion holes. 13. The tube fixing structure according to claim 12, further comprising covers that are detachably attached to respective end of the plates with respect to a sliding direction of the plates, each of the covers has such a size as to be impassable through the through hole. 14. The tube fixing structure according to claim 1, wherein the fixing member further comprises an elastic member that is disposed to connect two opposite wall faces of the holder defining the slit, the elastic member having a larger elasticity than that of the holder. 15. The tube fixing structure according to claim 1, wherein the through hole of the holder is longer than a length from the first terminal end of the pipe to a portion of the pipe protruding from the main body with respect to the axial direction.