JP4625706B2 - Writing instrument with clip member - Google Patents

Description

  The present invention relates to a writing instrument having a clip member formed by integrating or attaching a clip member to a cylindrical body.

2. Description of the Related Art Conventionally, a writing instrument having a clip member having a locking protrusion such as a ball provided on the inner wall of the tip inner wall of the clip member is well known. In a writing instrument having such a clip member, in JP 2004-276474 “Clip and a tool to which this clip is attached” or JP 2003-246189 “Critical tool and clip for writing instrument”, a pocket or a notebook locked to the clip member, etc. The clip member made into the structure which cannot remove easily is disclosed.
"JP 2004-276474 A" "JP 2003-246189 A"

  However, Patent Document 1 has a structure in which a pocket, a notebook, etc. locked to a clip member cannot be easily removed by operating an operation lever, but the structure is complicated and the user must operate it. There was a troublesomeness. In addition, Patent Document 2 is preferable because it is a structure in which a pocket, a notebook or the like locked to the clip member cannot be easily removed at all times, but two types of materials having different surface frictional resistance must be used. There was a problem that it was difficult.

  By the way, as shown in FIG. 6, a structure in which two locking projections 104 are provided on the inner wall of the tip inner wall of the clip member 103 is also known. Such a structure provided with a locking protrusion has a higher locking force than a structure provided with one locking protrusion. This is because when there is only one locking projection, there is only one contact point between the cylindrical shaft cylinder and the locking projection, but by providing two locking projections, the cylindrical shaft This is because there are two contact points between the cylinder and the locking projection.

  Certainly, it is possible to increase the locking force by providing a locking projection, but there is a problem that pockets and notebooks locked to the clip member become difficult to enter due to the increased number of contacts. there were.

  An object of the present invention is to provide a writing instrument having a clip member that has a simple structure, allows an object to be locked such as a pocket or a notebook to enter the clip member, and does not easily come off.

  The present invention relates to a writing instrument having a clip member, which is integrally or attached to a cylindrical body, and is provided with a locking projection that extends in the axial direction on the inner wall of the distal end portion of the clip member and contacts the shaft cylinder. In addition to providing a portion, the locking projection is formed in a square shape in which the gap is spaced from the front end of the shaft tube toward the rear end of the shaft tube.

  Further, the inclination angle of the locking projection is less than 90 degrees.

  Further, the clip member is characterized in that an elastic body disposed between the cylinder and the clip member is provided in a state in which the tip inner wall portion of the clip member is constantly repelled toward the outer wall surface of the cylinder.

  It was possible to provide a writing instrument having a simple structure, a simple structure, a clip member that has a clip member that is easy to enter into the clip member, such as a pocket or a notebook, and that does not easily come off.

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

  The writing instrument 1 having a clip member shown in FIGS. 1 to 5 is provided with engaging projections 9 on a main pillar 8 integrally formed on the outer wall surface 2 a of the shaft cylinder 2, and both sides provided on the rear end of the clip member 3. An engagement recess 10 is formed on the wall 5 so as to face the engagement protrusion 9, and the engagement protrusion 9 and the engagement recess 10 are engaged with each other so that the clip member 3 is attached to the shaft cylinder 2.

  Further, the projection 6 extending toward the clip member 3 provided on the outer wall 2 a of the rear end portion of the shaft cylinder 2 and the projection 7 extending toward the shaft cylinder 2 provided on the inner wall of the clip member 3 are covered. By arranging the coil spring 11 on the front end, the tip inner wall portion of the clip member 3 is always elastically attached to the outer wall surface 2a side of the shaft tube 2. Further, by pressing the rear end portion 3a of the clip member 3 (in the direction of arrow F in FIG. 1), the connecting portion between the clip member 3 and the shaft tube 2 is used as a fulcrum, and the tip inner wall portion of the clip member 3 is used as the shaft tube 2. It can be separated from the outer wall surface 2a.

  On the bottom wall of the clip member 3, the engaging protrusion 4 that faces and opposes the through hole 12 is inclined in the direction toward the rear end of the shaft cylinder compared to the interval M at the front end, and the interval N is separated (M < N) It is attached to the C shape. The shape of the locking projection 4 is not particularly limited, but is substantially arc-shaped so that a locked object such as a pocket can easily enter (opposite to the arrow H in FIG. 2) in the longitudinal section direction. Is formed.

  By providing the locking projection 4 together, there are two contact points S with the shaft tube 2 and the clamping force is improved. Since the gap between the stop protrusions 4 is narrow, an object to be locked (not shown) such as a pocket is likely to enter.

  The inclination angle α of the locking projection 4 is not particularly limited, but if the inclination angle exceeds 90 degrees, an object to be locked (not shown) such as a pocket becomes difficult to enter, so it is less than 90 degrees. It is preferable that

  Further, by forming the C-shape, the force for holding the object to be locked (not shown) is improved as compared with the locking protrusion 104 of the clip member 103 provided in parallel as shown in FIG. . This is presumably because the locking protrusion 4 is inclined with respect to the direction (H direction in FIG. 2) in which the locked object is released, so that the releasing force is dispersed.

  Further, the inner wall portion at the tip of the clip member 3 is configured to be constantly repelled toward the outer surface 2a of the shaft tube by the coil spring 11 disposed between the shaft tube 2 and the clip member 3, so that the object to be locked (FIG. (Not shown) can be appropriately selected by the coil spring 11, and even if the holding force is relatively strong so that the object to be locked is not easily detached, the clip member 3 is not likely to be damaged. Furthermore, the contact S between the shaft cylinder 2 and the locking projection 4 does not separate with time. For this reason, it is preferable that the locking protrusion 4 is formed in a U-shape and the tip inner wall portion of the clip member 3 is constantly repelled toward the outer tube wall surface 2a side, so that a stronger clamping force can be obtained.

  In this embodiment, for the sake of convenience, the tip inner wall portion of the clip member is configured to constantly spring toward the outer wall surface side of the cylinder by a coil spring disposed between the cylinder and the clip member. A leaf spring may be used, or a clip member may be formed integrally with the cylinder. In the present embodiment, the cylinder is illustrated as an axial cylinder, but a structure in which the cylinder is used as a cap and a clip member is attached to the cap may be used.

  Cap-type, knock-type, etc. can be widely implemented as a writing instrument with a clip member, and the holding force of the locked object is high and it does not easily come off from the locked object, so it is effective when moving to commuting or school is there.

It is the longitudinal cross-sectional view which abbreviate | omitted partially which shows the writing instrument which has a clip member of Example 1. It is the figure which looked at only the clip member in FIG. 1 from the axial cylinder side. It is the AA expanded sectional view in FIG. 1, and is the figure which abbreviate | omitted the decoration member. It is BB expanded sectional drawing in FIG. It is CC sectional drawing in FIG. It is the figure which looked at only the conventional clip member from the axial cylinder side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Writing instrument which has a clip member 2 Shaft cylinder 3 Clip member 3a Tip inner wall part 4 Through-hole 5, 6 Projection part 7, 8 Projection part 8 Support | pillar 9 Engagement recessed part 10 Engagement protrusion part 11 Coil spring

Claims (3)

In a writing instrument having a clip member integrated or attached to a cylindrical body, a locking projection that extends in the axial direction and contacts the axial cylinder is provided on the inner wall of the tip of the clip member. In addition, a writing instrument having a clip member, wherein the locking projection is formed in a square shape with a gap spaced from the front end direction of the shaft tube toward the rear end direction of the shaft tube. The writing instrument having a clip member according to claim 1, wherein an inclination angle of the locking projection is less than 90 degrees. 3. The clip member according to claim 1, wherein the clip member is attached in a state in which the tip inner wall portion of the clip member is constantly repelled toward the outer wall surface of the cylinder by an elastic body disposed between the cylinder and the clip member. A writing instrument having the clip member described.

Images