JPH0467088U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1a is a cross-sectional side view showing a writing instrument according to an embodiment of the present invention, with the writing shaft in the storage position, FIG. 1b is a cross-sectional side view showing the writing shaft in the writing position, and FIG. Figure 3a is a cross-sectional side view showing the main parts of the writing instrument when the writing shaft is in the storage position, Figure b is a cross-sectional side view showing the main parts of the writing instrument when the writing shaft is in the writing position, Figure 3a 4B is a plan view of the barrel in the writing instrument, FIG. 4B is a bottom view of the barrel in the writing instrument, FIG. The bottom view, Figures 5a, b, and c are cross-sectional side views for explaining the various dimensional changes in the same writing instrument, and Figure 6a is a diagram of the writing instrument when the writing shaft is in the storage position in the second embodiment. Figure 7b is a cross-sectional side view showing the main parts of the writing instrument when the writing shaft is in the writing position; Figure 7a is a partial cross-sectional plan view of the knob member of the writing instrument; Figure b is a bottom view of the knob member in the same writing instrument. 10... shaft cylinder, 11... tip opening of shaft cylinder, 12
... Locking hole, 13 ... Penetration groove, 14 ... Locking part,
20... Writing shaft, 30, 50... Knock member, 3
3, 54...second bending piece, 34,56...first
Flexible piece, 35, 57...Clip connection part, 36
, 58... Clip main body, 37, 59... 1st
Locked part, 39, 55...Second locked part, 4
0...Compression spring (biasing member).

Claims (1)

[Scope of utility model registration request] an axial cylinder that opens on both the distal end and the caudal end;
A writing portion is provided at the tip, and the writing portion is inserted into the barrel so as to be movable in the axial direction between a writing position where the writing portion projects outward from the opening on the tip side of the barrel and a storage position where the writing portion is recessed inward. a writing shaft that has been inserted into the shaft cylinder, a biasing member that biases the writing shaft in the direction of the tail end, and
a knock member that protrudes outward from the opening on the tail end side of the barrel, and pushes the writing shaft from the storage position to the writing position when the tail end receives a knock operation; A first flexible piece having a shape that allows the end portion to be bent inward in the radial direction of the writing instrument is provided, a clip connecting portion is provided extending from the flexible end of the first flexible piece toward the outer side in the radial direction of the writing instrument, and the clip connecting portion is provided. A clip main body extends from the outer end to the distal end, a first locked portion is provided protruding from the back surface of the distal end of the clip main body, and the first flexible piece is attached to the knob member. A second flexible piece is formed at a different position in the circumferential direction, and either one of the tail end side end part and the tip side end part has a shape that can be bent inward in the radial direction of the writing instrument, and the second flexible piece is bent. A second locked part is provided at the end, and the tail end of the barrel has dimensions that extend in the axial direction of the writing instrument, open toward the tail end, and allow the clip connecting part to pass through. A clip-through groove is formed, and the clip connecting portion passes through the clip-through groove in the barrel, and the knob member engages the first locked portion with the writing shaft pushed out to the writing position. A locking portion is provided at a position where the writing instrument is locked, and a locking portion extending in the axial direction of the writing instrument is provided at a position where the second locked portion is fitted with the clip connecting portion passing through the clip penetration groove in the barrel. A hole is formed, and the knock member is locked with the writing shaft in the storage position by abutting the tail end side edge of the locking hole with the second locked part. A writing instrument characterized by: