JPH049193Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Industrial application field) This invention uses a knocking rod to
The engaging part provided at the tip of the clip engages with the locking part provided on the knob bar, causing the writing tip to protrude from the tip of the shaft, and the engagement is released by pressing the pressing part at the rear end of the clip. The present invention relates to an improvement of a knob-type writing instrument in which the writing tip is housed in a barrel.

(Prior art) Conventionally, when this type of writing instrument is inserted into the chest with the writing tip protruding, the writing tip is not stored sufficiently in the barrel, or the writing tip cannot be inserted into the chest with the writing tip protruding. For example, Utility Model Publication No. 37-20413, which is devised to prevent clothes from getting dirty, is
Various proposals have been made in JP-A-47-5651, JP-A-58-82290, JP-A-59-162288, etc.

(Problems to be Solved by the Invention) However, in the various proposals mentioned above, when clothes, etc. are inserted between the clip and the barrel, that is, when the clip is held in a pocket etc. If an external force is applied to the part and the actuating piece and the engaging part move in the distal direction, the writing tip protrudes from the tip of the shaft, which has the disadvantage of staining clothes. In addition, if the material is thin enough to be worn as a dress shirt, the edge of the pocket will easily fit into the small gap created, for example, between the engaging part (the tip in the present invention) and the clip (the spring plate in the present invention). However, there was a problem in that the exposure of the writing section could not be controlled because the expected engagement state could not be obtained.

The present invention aims to eliminate the above drawbacks.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention is movably inserted into the through hole of the knock rod and is biased between the tail plug and the engaging part by a spring. A contact pin that is pressed is provided and an arm protrudes from the contact pin, and when worn in a pocket (clothing), the edge of the pocket and the tip of the arm engage, allowing the contact pin to be used as a writing instrument. When the writing tip is moved toward the rear end and an external force is applied to the knob bar, causing the writing tip to protrude from the tip of the shaft, the tip is held by the edge of the pocket.
The movement of the abutment pin is regulated, and therefore the knob bar also does not move, preventing the writing tip from protruding from the tip of the shaft, thereby ensuring the function of the abutment pin.

Hereinafter, embodiments will be described in detail with reference to the drawings.

FIG. 1 is a longitudinal cross-sectional view of the upper part of the barrel 1 with the refill 14 stored in the retracted position.
Reference numeral 3 denotes a window portion opened on the outer periphery of the upper part of the shaft cylinder 1 facing the clip 4; the window portion 2 is fitted with the ball portion 5 of the clip 4;
The window portion 3 is provided to project the arm portion 6a of the abutment pin 6 toward the rear surface of the clip 4 and to guide the arm portion 6a so as to be movable up and down. A spring plate 7 is fixed to the back surface of the clip 4, and the base 7a of the spring plate 7 is clamped and fixed between a rear threaded pipe 8 and a crown 9, and the rear threaded pipe 8 is press-fitted and fixed into the upper end opening of the shaft 1. Also, the clip 4 has a ball part 5.
Locking grooves 5b are provided at the top and bottom of the front surface of the
Then, the lower end of the clip 4 is bent to the back side, and the flange piece 5a of the ball part 5 is caulked with the bent part 4a. Tamabe 5
The tip of the spring plate 7 is in contact with the upper part of the flange 5a, and the clip 4 is biased toward the lower end, and is attached with a reference numeral 10 on the back side of the clip 4.
Weld the upper part of the spring plate 7 over a long span to the back surface of the clip 4 as shown in FIG.
a into a contact state. The upper part of the clip 4 extends upward from the base 7a of the spring plate 7, and the back surface is formed into a narrow sloped side 4c as it reaches the upper part, and a gap P is formed between it and the outer peripheral surface of the crown 9, and the pressing part 4b is pressed against the crown 9, the ball portion 5 rises above the window hole 2 using the base 7a of the spring plate 7 as a fulcrum. The ball portion 5 is normally kept pressed into the window hole 2 by a spring plate 7. Next, reference numeral 11 is a knob rod, which is installed inside the upper center hole of the shaft tube 1 so as to be able to move up and down.The upper small diameter portion 11a is made to protrude outward from the crown 9, and the decorative tube 12 is inserted into the outer periphery. A tail plug 13 is attached to the inner periphery of the small-diameter cylindrical portion 11a inserted into the inner periphery of the tail plug 13. An insertion cylindrical portion 13b is formed on the tail plug 13 and is firmly inserted therein, or a fixing protrusion 13c is provided to protrude and fix the tail plug 13.
Further, a vertically elongated window hole 11b is provided at the location where the clip 4 of the knock rod 11 is located, an annular groove 11c is provided at the lower end of the window hole 11b, and a groove 11d is further provided below the annular groove 11c.
Install refill 14. This refeel 14
There is a tip 18 and a re-reel 14 at the bottom inside the barrel 1.
The coil spring 15 provided between the shaft cylinder 1 and the rear end of the shaft cylinder 1 is always pressed upwardly, causing the tail plug 13 to protrude outward from the rear end of the shaft cylinder 1, thereby maintaining a state in which the knocking operation can be performed. As a result, the upward movement of the knock rod 11 is restricted by the stepped portion 11f formed by forming the small diameter cylindrical portion 11a above the approximately middle large diameter portion 11e, which abuts against the lower end of the threaded tube 8. Also, 11g is the small diameter cylindrical portion 11a.
A vertically elongated guide window hole provided facing the location of the clip 4 guides the vertical movement of an abutment pin 6, which will be described later. Next, the abutment pin 6 is inserted into the small diameter cylindrical portion 11a above the knock rod 11, and a protrusion 6d is provided in the axial direction on the outer periphery facing the clip 4 to align with the guide window hole 11g. An arm portion 6a is provided with a downward bias toward the clip 4, and a small-diameter guide rod 6b is provided at the upper end, and is always urged toward the writing portion 17 by a coil spring 16.

Furthermore, the proximal end 6c of the arm portion 6a is wide, and the distal end is shaped like a narrow plate resembling the head of a long-necked bird to provide elasticity. An arm portion 6a protrudes from the vertical hole 11b of the knock rod 11 and the corresponding vertical hole 3 of the shaft tube 1, and is received in the window hole 11h connected to the recess 11c. Press the tip elastically. A beak-shaped tip 6e is provided at the tip of the arm 6a and abuts against the spring plate 7.

Further, as shown in FIG. 4, the arm portion 6a has a protrusion 6 at the tip of the tip portion 6e that faces toward the tip of the writing instrument.
f is attached and brought into contact with the spring plate 7, and the pocket opening edge is scooped from the outside to the inside and guided to the lower surface of the tip portion 6e. As shown in FIG. 5, the arm portion 6a is made of a metal spring plate and is bent downward into an L-shape at the front end to form a tip 6e and a protrusion 6f, and bent into an upward L-shape at the rear end. In order to fix the arm portion 6a, the abutting pin 6 has a cutout recess 19 opened on the side surface just above the base end 6c, and guide projections 20, 20a are provided in the recess at the upper and lower sides to fit into the fitting groove. 21 is provided, and the bent rear portion of the arm portion 6a is forcibly fitted and fixed along this groove 21 from the side.

Next, the above-mentioned spring plate 7 has a part above the welded part 10 at the lower end that is not fixed to the back surface of the clip 4, and in this non-fixed part, the arm part 6a side is on the lower end side from the contact part with the tip part 6e. chevron-shaped bent part 7 protruding from
b, and a sloped part 7c is provided below the sloped part 7c.
e Guide it to the bottom surface.

(Function) Next, to explain the function, when the rear end of the tail plug 13 is pushed down from the non-use mode shown in FIG. As shown in FIG.
The ball portion 5 engages in the annular recess 11c of the knock rod 11, resists the biasing force of the coil spring 15, and prevents the re-seal 14 from retreating.
The writing tip No. 4, that is, the writing portion 17 protrudes from the tip hole of the tip 18, and is in a use mode. Furthermore,
When the pressing part 4b at the upper end of the clip 4 is pressed from this state, the ball part 5 of the clip 4 releases its engagement with the annular recess 11c, and the knock bar moves upward with the re-feel due to the elastic force of the coil spring 15 and moves into the shaft 1. stored in the first
Return to the state shown in the figure. Next, when inserting the clip 4 into a pocket or the like, press the pressing part 4b of the clip 4 until it comes into contact with the circumferential surface of the crown 9, leaving a large space between the ball part 5 of the clip 4 and the circumferential surface of the barrel 1. .

As shown in FIG. 3, the clothing a (pocket part) that has entered between the spring plate 7 and the tip 6e engages its opening edge with the tip 6e of the arm 6a, and the stopper piece 6a and the abutment pin 6 is pushed up against the coil spring 16. Prior to engagement with the tip 6e, the garment a is guided from the outside to the inside by the protrusion 6f of the tip 6e to ensure engagement, and is also inclined inward toward the arm 6a along the slope 7c. It is guided and engaged with the tip 6e. In this state, the upper end tail plug 1 of the knock rod 11 is
Even if 3 is knocked by an external impact, it does not move toward the tip of the barrel 1 (however, the stroke of S moves), so the writing tip does not protrude from the tip hole of the tip 18.
Further, since the arm portion 6a is given elasticity, it comes into contact with the spring plate 7 of the clip 4 even when the gap between the ball portion 5 of the clip and the shaft surface is wide open.

(Effects) Due to the above-mentioned action, even if an inadvertent external force is applied to the knob rod when it is attached to a pocket, the knob-type writing instrument according to the present invention is absorbed by the coil spring 16, and further pushing up is restricted by the edge of the pocket. Since the writing tip does not protrude from the shaft tip hole, stains on clothes can be reliably prevented. or,
When worn in a pocket, even if the ball of the clip is left wide open from the side of the barrel, the tip will always come into contact with the clip due to the elasticity of the arm, so clothes will not get caught between the tip and the clip. ,
In addition, the tip of the abutment pin can ensure engagement with the edge of the pocket (clothing), so that the abutment pin can function reliably.

Furthermore, by forming a protrusion on the tip that faces toward the tip of the writing instrument, and providing an inclined portion on the spring plate, the edges of the pocket, etc. are guided to the tip to facilitate engagement with the tip. be able to.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the upper part of the shaft cylinder when the refiel is retracted, Figure 2 is the same sectional view when the refiel is advanced, and Figure 3 is the same sectional view when the refiel is moving forward.
The figures are the same sectional view when worn in a pocket, etc., FIG. 4 is an enlarged sectional view of a part of the deformed arm and spring piece, FIG. 5 is a side view of another embodiment of the arm, and FIG. FIG. 7 is a cross-sectional view taken along the - line and - line. 1...Shaft tube, 2...Window part, 3...Window part, 4...
Clip, 5... Ball portion, 6... Contact pin, 6a...
...Arm part, 6e...Tip part, 6f...Protrusion, 7...
Spring plate, 7b... chevron-shaped bent part, 7c... inclined part,
11...Knock stick, 14...Refeel, 16...
...Coil spring.

Claims (1)

[Claims for Utility Model Registration] (1) A knob that has a locked part to be engaged with a clip and that moves toward the tip of the writing instrument against the biasing force toward the rear end of the writing instrument when pressed. It is biased toward the outer circumferential surface of the shaft cylinder by the rod and a spring plate provided inside, and engages with the locked portion when the knob rod moves and the writing tip protrudes in a use mode. After use, the clip is disengaged by rotating the clip against the spring plate, and the knock bar is placed in a non-use mode based on the biasing force. In the knock-type writing instrument which is configured to return to the state of an abutment pin having a tip protruding from the window hole and being stopped by the spring plate; and when the clip is attached to the pocket, the edge of the pocket A knock-type writing instrument, characterized in that the knock rod cannot be pressed by lifting the tip and moving the abutment pin toward the rear end of the writing instrument and holding it. (2) Claim 1 characterized in that the tip of the abutment pin is provided with a protrusion facing toward the tip of the writing instrument.
Notsuku type writing instrument described. (3) The knob-type writing instrument according to claim 1 or 2, wherein the spring plate is provided with an inclined portion for guiding the edge of the pocket.