JP2007216530A - Knock type writing implement having clip - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a writing implement having a clip which is prevented from easily slipping off from clothes, a bag or others held by the clip, of which the clip is hardly damaged by a repeated use, impact or others and which can be put on a relatively thick object. <P>SOLUTION: The knock type writing implement having the clip has a constitution wherein a writing body is disposed, urged to the rear end side of a barrel by a coil spring disposed inside the barrel, and wherein a writing tip part of the writing body is made projectable and retractable from a tip opening part of the barrel by pressing a knock body, protrusively disposed outward from the rear end part of the barrel, in the tip opening direction of the barrel. Herein the inner wall of the tip part of the clip is ordinarily put in pressure contact with the outer wall surface of a base body by an elastic body disposed between the clip and the base body, and the inner wall part of the tip of the clip can be detached from the outer wall surface of the barrel by pressing the rear end part of the clip, with the connecting part of the clip and the base body made as a fulcrum, while the base body is fitted removably to the rear end part of the barrel. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  In the present invention, the clip is connected to the base by constantly pressing the inner wall of the tip of the clip against the outer wall of the base and pressing the rear end of the clip by the elastic body disposed between the clip and the base. The present invention relates to a knock-type writing instrument having a clip in which a portion is a fulcrum, and a tip inner wall portion of the clip is disposed so as to be separable from an outer wall surface of a shaft cylinder.

2. Description of the Related Art Conventionally, a writing instrument that has a clip that constantly repels the tip inner wall of the clip toward the outer wall surface of the base and can separate the tip inner wall of the clip from the shaft cylinder is well known. In a writing instrument having such a clip, a coil spring is used as a resilient member as disclosed in Japanese Utility Model Laid-Open No. 55-148990 “Clip Device for Writing Tool” and Japanese Utility Model Laid-Open No. 56-159283 “Clip Device for Writing Tool”. The structure was also well known.
"Japanese Utility Model Publication No. 55-148990" "Japanese Utility Model Publication No. 56-159283"

  By the way, a writing instrument having a clip as described above may be sandwiched not only by clothes but also by a bag or the like. Surely, by pressing the rear end of the clip, the writing tool that uses the connecting part between the clip and the barrel as a fulcrum and the inner wall of the tip of the clip can be separated from the outer wall of the barrel is integrated with the barrel. Compared to the case where a clip is formed, it can be held between relatively thick objects.

  However, there is no particular problem when a clip is sandwiched between a bottomed sandwiched object such as a pocket, etc., but when the clip is sandwiched between bottomed sandwiched articles, the weight of the entire writing instrument is placed on the sandwiched part. In addition, an external force is applied to the other cylindrical portion, and the clip may come off from the object to be clamped.

  It is an object of the present invention to prevent a clip from being easily detached from clothes or bags held between the clips, and to prevent the clip from being damaged by repeated use or impact, etc. It is providing the knock type writing instrument which has.

  The present invention is arranged such that the writing body is urged from the coil spring disposed in the shaft tube toward the rear end side of the shaft tube, and the knock body disposed so as to protrude outward from the rear end portion of the shaft tube. In a knock-type writing instrument having a clip that can protrude and retract the writing tip of the writing body from the opening of the shaft tube tip by pressing in the direction of the shaft tube tip opening, the elastic body disposed between the clip and the base is always used. The inner wall of the front end of the clip is pressed against the outer wall of the base, and the rear end of the clip is pressed, so that the connection between the clip and the base is a fulcrum, and the front inner wall of the clip is the shaft cylinder. The base member is disposed so as to be separable from the outer wall surface, and the base is detachably fitted to the rear end portion of the shaft tube.

  Further, when the operation load of the clip is A and the operation load of the knock body is B, the relationship of A> 2B is satisfied, and the operation load of the clip is 1 kgf or less.

  The tip of the clip can be detachably fitted toward the rear end side of the shaft tube.

  In the present invention, the operating load of the clip is a pressing load required to press the rear end of the clip toward the base and the inner wall of the tip of the clip is separated from the outer wall of the base. It is the load which combined the load which contracts the elastic body arrange | positioned between, and the frictional force of the connection part of a clip and a base | substrate. The operating load of the clip varies depending on the shape of the clip, particularly the shape of the inner wall of the tip, but is substantially equivalent to the clamping force for clamping the object to be clamped between the clip and the base.

  The operating load of the knock body is a pressing load required to operate the knock body to maintain the pen tip portion in the protruding state, and bias the refill equipped with the pen tip portion toward the rear end of the shaft cylinder. It is a load that combines the load for contracting the spring that is being operated and the frictional force between the components generated in the knock mechanism during the knocking operation.

  The operating load of the clip and knock body is measured using a push-pull scale, and an attachment with a flat tip is attached to the end of the measurement shaft and the rear end surface of the knock body is pressed toward the tip of the shaft tube, or the rear end of the clip Clip the load necessary to maintain the protruding state of the pen tip to the base, and the pressing load necessary to keep the inner wall of the tip of the clip away from the outer wall of the base. Operating load.

  Knock-type writing instrument with a clip that prevents the clip from being easily removed from clothes, bags, etc., and prevents the clip from being damaged by repeated use or impact, etc. Could be provided.

  Next, examples of the knock type writing instrument having a clip of the present invention will be described with reference to the drawings, but the present invention is not limited to the following examples.

  A knock type writing instrument 1 having a clip shown in FIG. 1 to FIG. 6 comprises an axial cylinder body formed by screwing a front shaft 2 and a rear shaft 3, and ink is accommodated by a coil spring 12 disposed in the front shaft 2. A pen mounted with a ballpoint pen tip 11 holding a ball rotatably at the tip of the cylinder 9 is arranged by urging a writing body attached via a tip holder 10 toward the rear end of the rear shaft. A rotary cam 4 is disposed behind the ink containing cylinder 9, a knock body 5 is disposed behind the rotary cam, and a rear end portion of the knock body 5 projects outward from an opening of the rear shaft rear end 3a. is there. A grip member 13 is attached to the grip portion of the front shaft 2.

  Further, at the rear end portion of the rear shaft 3, a cylindrical base body 6 is provided with a front convex portion provided around the inner wall of the base body 6 so that the knock body 5 protrudes outward from the rear end opening of the base body 6. 6e and a front convex portion 3b provided around the outer wall of the rear end portion of the rear shaft 3 are fitted in a detachable manner by overcoming press fit. Further, the base 6 is provided with an engaging convex portion 6d on a support column 6c formed integrally with the outer wall surface 6a of the base 6, and opposed to the engaging convex portion 6d on both side walls 7f provided at the rear end portion of the clip 7. The engaging hole 7e is formed, and the engaging convex portion 6d and the engaging hole 7e are engaged with each other so that the clip 7 is attached to the base 6. In addition, the fitting structure of the base body 6 to the rear end portion of the rear shaft 3 is not particularly limited, and a detachable fitting method such as screwing or uneven fitting is appropriately selected and used. Can do.

  Further, as shown in FIG. 7, the cylindrical base body 6 includes a rear protrusion 6 e that is provided around the inner wall of the base body 6 so that the front end portion of the clip member 7 faces the rear shaft rear end 3 a, and the rear shaft Since the place which can be pinched | interposed by the clip 7 spreads by detachably fitting by the overpass press-fit fitting with the convex part 3b provided around the outer wall of the rear end part 3 is preferable.

  The clip 7 is provided with a coil spring 8 so as to cover the protrusion 6 b provided on the outer wall surface 6 a of the base 6 and the protrusion 7 c formed on the inner wall of the clip 7. The base 6 is always provided with a bullet on the outer wall surface 6a side. Further, by pressing the rear end portion 7b of the clip 7 (in the direction of arrow F in FIG. 1), the connecting portion (6c, 7e) between the clip 7 and the base 6 is used as a fulcrum, and the tip inner wall 7a of the clip 7 is the base. 6 can be separated from the outer wall surface. The operation load of the clip 7 for separating the tip inner wall portion 7a of the clip 7 from the outer wall surface of the base 6 was 280 gf.

  With the coil spring 8, the tip inner wall portion 7 a of the clip 7 is always elastically attached to the outer wall surface side of the base 6 and the rear end portion 7 b of the clip 7 is pressed (in the direction of arrow F in FIG. 1). By using the connecting portion (6d, 7e) between the clip 7 and the base body 6 as a fulcrum and making the tip inner wall part 7a of the clip 7 separable from the outer wall surface of the base body 6, durability by repeated use is improved. 7 is preferable because the distance between the inner wall 7a at the tip 7 and the outer wall surface of the base 6 can be increased.

  In order to use the knock-type writing instrument, the knocking body 5 is pressed (in the direction of arrow M in FIG. 1) to advance the rotating cam 4 along the cam groove (not shown), and by the action of the cam portion of the knocking body 5 The rotary cam 4 can be rotated so that the writing tip 11 protrudes from the tip opening 2 a of the front shaft 2. When the knock body 5 is further pressed, the rotating cam 4 is rotated by the action of the cam portion of the knock body 5, and the rotating cam 4 is moved back along the cam groove (not shown) by the biasing force of the coil spring 12. The part 11 can be immersed. The operating load of the knock body 5 when the writing tip portion 11 was projected was 130 gf.

  FIG. 6 shows an example in which a through hole 7d is formed at the tip of the clip 7, and the protrusion 14a of the attachment 14 is press-fitted and attached to the through hole 7d. A concave portion is formed in the attachment 14, and the side wall 14b of the concave portion is inclined so as to increase in diameter toward the surface of the clip 7, and a sheet-like reflector 15 is attached to the bottom wall of the concave portion. It is.

  In the knock type writing instrument having the clip of the present invention, the base body 6 provided with the clip 7 is detachably fitted to the shaft cylinder of the writing instrument, so that the base body 6 is attached to the rear shaft 3 as shown in FIG. By using the clip 7 after being removed, the overall length can be shortened, and the place where the clip 7 can be sandwiched is widened. In addition, since the weight of the vehicle becomes light, it becomes difficult for the clip to come off the object to be clamped (not shown). Therefore, when a separate member such as a reflector 15 or a name tag is attached to the clip 7, it is particularly effective because it can be easily sandwiched between an umbrella, a school bag and the like. Moreover, even if the base body 6 is removed, the knocking operation is possible, so that it can be used as a knock-type writing instrument.

  In the present embodiment, a cylindrical base is illustrated for convenience, but the shape of the base is not particularly limited, and may be a plate, which is detachably fitted to the shaft cylinder, and the base. Any shape may be used so long as the knock body can be actuated before and after the fitting.

  Further, in the conventional knock type writing instrument, it is noted that the operation load of the knock body is set to 100 to 200 gf as the operability, that is, the load that can be easily operated, compared with the operation load of the knock body. By increasing the operating load of the clip, it is possible to prevent the writing tool from being easily detached from clothes, a bag, etc. by expanding the tip of the clip while a hand or the like touches the clip without knowing it. Specifically, it is preferable that the operation load A of the clip is twice or more (A> 2B) compared to the operation load B of the knock body. However, since the operability of the clip is deteriorated when the operating load of the clip exceeds 1 kgf, the operating load of the clip is preferably 1 kgf or less.

  In this embodiment, for the sake of convenience, the tip inner wall portion of the clip is configured to be constantly repelled toward the outer wall surface of the base by an elastic body made of a coil spring disposed between the base and the clip. However, it is most preferable to use a coil spring in consideration of durability due to repeated use.

  Can be widely implemented as a knock-type writing instrument with a clip. By making the base with a clip detachable, the selection of objects to be locked is widened and it is not easily removed from the objects to be clamped. It is effective when moving.

1 is a longitudinal sectional view showing a writing instrument having a clip of Example 1. FIG. It is a longitudinal cross-sectional view which shows the state which expanded the front-end | tip part of the clip in FIG. It is a longitudinal cross-sectional view which shows the state which removed the clip and base | substrate in FIG. It is a principal part expanded sectional view in which a part was omitted in FIG. It is an external view which shows the state which engages the clip in FIG. 1 with a base | substrate. It is a longitudinal cross-sectional view which shows the state which attached the attachment to the clip in FIG. It is a longitudinal cross-sectional view which shows the state which orient | assigned the front-end | tip part of the clip to the rear-axis rear end side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Knock-type writing instrument with a clip 2 Front shaft 2a Front end opening 3 Rear shaft 3a Rear end 3b Protruding portion 4 Rotating cam 5 Knock body 6 Base body 6a Outer wall surface 6b Protruding portion 6c Strut 6d Engaging convex portion 6e Front convex portion 6f Rear Projection 7 Clip 7a Tip inner wall 7b Rear end 7c Protrusion 7e Engagement hole 8 Coil spring 9 Ink storage cylinder 11 Writing tip 12 Coil spring

Claims (3)

The writing body is urged from the coil spring disposed in the shaft tube toward the rear end side of the shaft tube, and the knock body that protrudes outward from the rear end portion of the shaft tube is opened at the front end of the shaft tube. In a knock-type writing instrument having a clip that can be projected and retracted from the shaft tube tip opening by pressing in the direction of the part, the tip of the clip is always provided by an elastic body disposed between the clip and the base. By pressing the inner wall of the section against the outer wall surface of the base and pressing the rear end of the clip, the connecting portion between the clip and the base is used as a fulcrum, and the tip inner wall of the clip is separated from the outer wall of the shaft cylinder. Knock type writing instrument having a clip, wherein the clip is disposed in such a manner that the base is detachably fitted to the rear end of the shaft cylinder. 2. The clip according to claim 1, wherein when the operation load of the clip is A and the operation load of the knock body is B, the relationship of A> 2B is satisfied, and the operation load of the clip is 1 kgf or less. Knock-type writing instrument The knock-type writing instrument having a clip according to claim 1 or 2, wherein a front end portion of the clip is detachably fitted toward a rear end side of the shaft cylinder.

Images