JPH0347188U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a sectional view of the main parts of a writing instrument according to the first embodiment of the present invention, Fig. 2 is a partially sectional perspective view showing a cylinder and a closing part attached to the writing instrument, and Fig. 3 a.
4 is a sectional view showing the same writing instrument with the writing shaft in the storage position, FIG. 4b is a sectional view showing the same writing instrument with the writing shaft in the protruding position, and FIG. Figure 5a is a cross-sectional view showing the writing instrument in a state where the shaft is in the storage position, Figure 5b is a cross-sectional view showing the writing instrument in the protruding position, and Figure 5a is a writing instrument in the third embodiment with the writing shaft in the storage position. 6B is a sectional view showing the writing instrument in a certain state, FIG. 6B is a sectional view showing the writing instrument in a protruding position, and FIG. FIG. 7B is a sectional view showing the writing instrument in which the writing shaft is in a protruding position, and FIG. 7 is a partially sectional perspective view showing the cylindrical body and the closing portion attached to the writing instrument. 10...Main container, 14...Writing axis, 18...
Cylindrical body, 183...Through hole, 19...Restricting member (pressing part), 201...First compression spring (first biasing means), 202...Second compression spring (second biasing unit) means), 21... hinge part, 22... closing part,
24...Pressed part.

Claims (1)

[Scope of utility model registration request] A cylindrical body having a through hole in the axial direction of the writing instrument and mounted movably in the axial direction within the writing instrument main body, and a cylindrical body inserted into the through hole of the cylindrical body so as to be retractable in the distal direction from the distal end surface of the cylindrical body. a writing shaft formed integrally with the cylindrical body via a hinge portion, and a closing portion that opens and closes the distal end opening of the through hole by rotating around the hinge portion; a first biasing member that biases the writing shaft toward the tail end with respect to the cylinder, and a second biasing member that biases the writing shaft toward the tail end and has a stronger biasing force than the first biasing member. and a member;
In the part near the hinge part in the closed part,
A pressed portion is provided that protrudes toward the inner wall of the writing instrument body, and a pressing portion is provided at a position that abuts the pressed portion from the tail end side when the cylinder body is located at the tail end side within the writing instrument body. . A writing instrument characterized in that this contact causes the closing portion to be pressed to a position where it closes the opening on the distal end side of the through hole.