JP4424717B2 - Attaching structure of clip body to shaft of writing instrument or electronic input pen - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure for attaching a clip body to a shaft tube of a writing instrument or an electronic input pen attached to a shaft tube through a connecting portion.
[0002]
[Prior art]
As an example, Japanese Utility Model Publication No. 62-178186 will be described. The scope of the utility model registration request of the publication is “a clip composed of a clip plate, a spring plate, and a ball portion having a locking portion, and a knock bar having a locking portion at a predetermined position that is shifted by a knock operation. When the knock bar is advanced by a knocking operation and the writing tip of the cursive body is projected from the end of the shaft, the engaging part of the ball part and the locking part of the knock bar are engaged by the action of the spring plate. A clip plate or a spring plate of a clip in a writing instrument configured such that the engagement is released by pressing the rear end of the clip plate and the leading end of the writing body is immersed in the shaft. A protruding piece having a notch at the front edge of the front end and a notch at the front edge is provided, and the protruding piece is formed as a ball portion with the notch as a locking portion, and continues to the rear end edge of the ball portion. A bent piece is provided at the side edge of the clip plate at the rear position, and the bent piece is clicked. Tsu writing instrument bent so as to contact the lower surface of the spring plate polymerized to the lower surface of the flops plate characterized by being integrally fixed to the caulking clip board clip. Has been described as ". That is, the clip is urged toward the shaft cylinder and the cursive body by the elastic spring plate, thereby maintaining the protruding state of the cursive body.
[0003]
[Problems to be solved by the invention]
However, although the length of the spring plate connecting the shaft cylinder and the clip plate is short and a strong locking force is obtained, on the other hand, a large force is applied to the rear end portion of the clip plate for releasing the lock. I had to hang it.
In addition, when not in use, the writing instrument may be inserted into a pocket or the like. At this time, the clip is separated from the shaft tube, but it is not easily separated by the elastic restoring force of the spring plate. Sometimes
[0004]
[Means for Solving the Problems]
The present invention is a mounting structure in which a clip body is attached to a writing cylinder or a shaft cylinder of an electronic input pen with a spring-plate-like connecting member, and the tip end portion of the clip body biased by the shaft cylinder is the clip body. A first fixing portion that is a fixing portion of the connecting member to the shaft tube and a fixing portion of the connecting member to the clip body so as to be separated from the shaft tube by pressing a rear end portion. In the mounting structure in which the clip body is attached to the shaft cylinder with the connecting member so that the second fixing portion is located at a different position in the longitudinal direction of the shaft cylinder, the connecting member is the first fixing which is one end thereof. From the first fixed portion, a standing portion that stands up in a direction away from the shaft tube, a first bent portion that is bent from an end portion of the standing portion toward the distal end direction of the shaft tube, and from the first bent portion Almost flat with the barrel A first linear portion extending linearly in the distal end direction of the shaft tube, a second bent portion further bent in a direction away from the shaft tube from the end portion of the first linear portion, and the second bent portion A third bent portion that is further bent in a direction away from the shaft tube and then bent toward a tip direction of the shaft tube, and is in a tip direction of the shaft tube from the third bent portion, and the shaft tube The second fixing portion is configured by a spring plate having a second linear portion that extends straight in a direction approaching the clip body, and the second linear portion is fixed from the center portion to the tip portion of the clip body. The gist is that the length of the first linear portion is longer than the length of the upright portion to separate the first and second fixing portions .
[0005]
【Example】
A so-called retractable writing instrument (mechanical pencil), in which a mechanical pencil is disposed inside the shaft cylinder and the mechanical pencil protrudes by pressing a knock member disposed at the rear part, will be described as an example. However, the present invention is not limited to this. A ballpoint pen may be sufficient as the thing arrange | positioned inside, and not only a writing instrument but an electronic input pen etc. may be sufficient. Further, the present invention is not limited to the pendant type writing instrument, and may be applied to a general writing instrument that protects the pen tip of the ballpoint pen by attaching and detaching a cap, for example.
A tip member 2 is detachably fixed to the front end of the resin or metal shaft cylinder 1 by means such as screwing. The shaft cylinder 1 is composed of a front shaft 1a and a rear shaft 1b. They are detachably fixed by screwing. A grip member 3 is inserted in the front portion of the front shaft 1a. The grip member 3 will be described in detail later.
An inner shaft 4 is disposed in the shaft tube 1 so as to be movable back and forth, and a tip 6 is detachably fixed to the tip of the inner shaft 4 by means such as screwing. A lead protection tube 7 for guiding and guiding the lead is press-fitted and fixed at the tip of the tip 6, but may be formed integrally with the tip 6. The tip 6 and the core protection tube 7 are normally urged rearward by the elastic member 23 and are housed in the shaft tube 1. However, when the center shaft moves forward, the tip of the tip member 2 is moved. It can be projected from. An engagement protrusion 1c is formed on the inner side of the front shaft 1a and is engaged with an engagement groove 4a formed on the front outer periphery of the middle shaft 4. That is, the middle shaft 4 is arranged so as to be able to move back and forth with respect to the front shaft 1a (shaft cylinder 1) but not to rotate. Thereby, the tip 6 and the middle shaft 4 can be easily attached and detached.
[0006]
On the other hand, a clip 9 urged in the radial direction of the shaft tube 1 is fixed to the rear portion of the shaft tube 1, and a ball portion 10 is formed inside the tip end of the clip 9. And when the auxiliary | assistant engagement part 11 is formed in the front-end | tip of the ball | bowl part 10, and the said center axis | shaft 4 advances and the core protection tube 7 etc. protrude, when it is not blocked | prevented by the engagement part mentioned later, The auxiliary engagement portion 11 is brought into contact with the intermediate shaft 4 so that the backward movement of the middle shaft 4 is prevented. That is, when the middle shaft 4 moves forward, the front portion of the clip 9 rotates so as to fall down in the radial direction of the shaft cylinder 1, and the engaging portion 11 of the clip 9 engages with the rear end portion 12 of the middle shaft 4.
Here, the clip 9 includes a clip body 13 and an elastic connecting member 14. One end of the connecting member 14 is fixed to the shaft cylinder 1, and the other end is fixed to the clip body 13. More specifically, a bent portion 15 is formed at an intermediate portion of the connecting member 14. And the bending part 15 is formed in the position away from the fixing | fixed part 16 of the connection member 14 and the axial cylinder 1. As shown in FIG. In other words, the fixing portion 17 with the clip body 13 is provided at a position away from the fixing portion 16 of the shaft tube 1. And even if it utilizes the whole area of this separation part A, the connection member 14 is elastically deformed (refer FIG. 4).
Further, the distance of the separation portion A is formed to be larger than the separation distance B between the clip 9 and the shaft tube 1. Although not limited to this, if the distance relationship is the same or shorter, the elastic deformation action of the separated portion A may not be sufficiently obtained.
Further, the clip 9 in this example is in contact with the outer surface of the middle shaft 4 at the front end thereof, and is prevented from being immersed in the radial direction. Thereby, the contact of the ball portion 10 with the lead tank which will be described later is avoided, so that damage to the sliding lead tank is prevented.
Further, the front end portion of the connecting member 14 is bent in an L shape, and this portion serves as an engaging portion 14 a that contacts the engaging portion 12 of the middle shaft 4. That is, the engaging portion 14a of the connecting member 14 substantially contacts the middle shaft 4, and in the unlikely event that the contacting portion 14a is destroyed, the auxiliary engaging portion 11 comes into contact. ing.
[0007]
A core tank 18 is slidably disposed inside the middle shaft 4. A chuck for gripping and releasing the core via a joint member 41 and a relay member 19 is provided at the front end of the core tank 18. The body 20 is fixed. A chuck ring 21 that opens and closes the chuck body 20 is bent around the front portion of the chuck body 20. A lead detent member 22 made of a rubber-like elastic body that prevents the retraction of the lead is located in front of the chuck body 20, and the lead detent member 22 is press-fitted and fixed to the inner surface of the tip 6. Has been. Reference numeral 8 denotes an elastic member such as a coil spring that urges the lead tank 18 and the chuck body 20 backward. On the other hand, an eraser holder 24 is press-fitted and fixed to the rear portion of the core tank 18, and an eraser 25 is detachably fitted into the eraser holder 24 via a washer 26. A knock member 27 is detachably attached to the eraser holder 24 so as to cover the eraser 25. Reference numeral 28 denotes an O-ring made of a rubber-like elastic body surrounded by a tail cap 29. The O-ring 28 is colored to indicate the diameter of the core to be used. Regarding the core diameter display, a recess 30 may be formed on the top surface of the knock member 27, and a seal 31 or the like describing the core diameter may be attached to the recess 30. By forming the concave portion 30, it is possible to prevent peeling of the seal 31, peeling of the printed matter, and the like (see FIGS. 5 and 6).
[0008]
A metal grip cylinder 32 is disposed in front of the shaft cylinder 1 so as to be sandwiched between the step portion 33 of the front shaft 1a and the tip member 2, and is formed integrally with the tip member 2. Also good.
The grip cylinder 32 will be described in detail. The surface of the grip cylinder 32 is knurled (see FIG. 2), and a plurality of through holes 35 are formed in the knurled region 34. An elastic protrusion 36 made of a rubber-like elastic body is exposed from the through hole 35. The elastic protrusion 36 is connected in the grip cylinder 32. More specifically, a plurality of elastic protrusions 36 are formed at equal intervals on the surface of the rubber-like elastic cylinder 37.
The elastic protrusion 36 has an elliptical shape, and the protrusion amount R from the knurled region 34 is set to 0.3 mm, but is allowed in the range of 0 mm to 1.0 mm. In addition, the protrusion amount from the knurl region in this example refers to the length from the top of the knurl to the top of the elastic protrusion.
One piece of the knurled region 34 has a rhombus shape, and the acute angle portion of the rhombus is formed at 60 degrees. An arc is formed at the top and valley of the knurl, the radius of curvature of the arc is 0.06 mm, and the angle between the top and valley is 90 degrees. Furthermore, the distance (height) from the valley to the top is formed to be 0.2 mm, and the pitch of the knurl is formed to be 0.5 mm in this example, but 0.4 mm to 0.7 mm. Is allowed in the range.
In this example, the elastic protrusion is protruded from the inside of the grip cylinder, but the elastic protrusion is closely attached to the surface of the grip cylinder not formed with a through hole by means such as insert molding, adhesion, or welding. It may be fixed.
[0009]
In addition, a window hole 38 is formed in the rear part of the grip cylinder 32 so that a seal portion on which the hardness of the core affixed to the corresponding position of the front shaft 1a is described can be visually recognized. Of course, the seal has various hardnesses, and can be easily selected by relatively rotating the front shaft 1a and the grip cylinder 32.
As this modification, a means as shown in FIG. 7 is also conceivable. More specifically, the rear portion of the grip cylinder 32 is cut, and a window hole 39 is formed to form a separate ring member 40. Accordingly, the ring member 40 can be rotated without giving a sliding resistance to the front shaft 1a of the rubber-like elastic cylinder 37, so that the core hardness can be selected more easily. In addition, since the ring member 40 itself is not sandwiched from the longitudinal direction, the ring member 40 is not crushed and deformed by the clamping force, thereby enabling the ring member 40 to be thinned and the core hardness display to be easily seen. Become.
[0010]
Next, a usage example will be described. When the knock member 27 is pressed, the center shaft 4 and the lead tank 18 move forward against the resilience of the resilience member 23, and the tip 6 and the lead protection tube 7 protrude from the tip of the tip member 2. To do. At this time, the rear end 12 of the middle shaft 4 is engaged with the engaging portion 14a of the connecting member 14, and the backward movement due to the restoring force of the elastic member 23 is prevented (see FIG. 8). At this time, the clip 9 is temporarily separated from the shaft tube 1, but the curved deformation of the separation portion A of the connecting member 14 is also acting. Here, if the knock member 27 is further pressed, the lead tank 18 and the chuck body 20 move forward, and the lead feeding operation is performed.
When it is desired to house the tip 6 in the tip member 2 again, the rear portion of the clip 9 is pressed and lifted, and the engagement between the engagement portion 14a and the rear end 12 of the central shaft is released. Also at this time, as described above, the separation portion A of the connecting member 14 is also curved, and the front of the clip 9 is lifted. As a result of the release, the middle shaft 4 and the like return backward by the elastic member 23.
In this example, in the retracted state of the central shaft, the chuck body is expanded to release the core. That is, even if the lead is stored in a protruding state, the lead is released, so that the lead can be easily stored even if an external force is applied. Further, since the central shaft is retracted in the state where the chuck body is expanded, it is possible to prevent the chuck body from being bitten by an impact when reaching the last retracted position.
[0010]
【The invention's effect】
The present invention is a mounting structure in which a clip body is attached to a writing cylinder or a shaft cylinder of an electronic input pen with a spring-plate-shaped connecting member, and the tip end portion of the clip body biased by the shaft cylinder is the clip body A first fixing portion that is a fixing portion of the connecting member to the shaft tube and a fixing portion of the connecting member to the clip body so as to be separated from the shaft tube by pressing a rear end portion. In the mounting structure in which the clip body is attached to the shaft cylinder with the connecting member so that the second fixing portion is located at a different position in the longitudinal direction of the shaft cylinder, the connecting member is the first fixing which is one end thereof. From the first fixed portion, a standing portion that stands up in a direction away from the shaft tube, a first bent portion that is bent from an end portion of the standing portion toward the distal end direction of the shaft tube, and from the first bent portion Almost flat with the barrel A first linear portion extending linearly in the distal end direction of the shaft tube, a second bent portion further bent in a direction away from the shaft tube from the end portion of the first linear portion, and the second bent portion A third bent portion that is further bent in a direction away from the shaft tube and then bent toward a tip direction of the shaft tube, and is in a tip direction of the shaft tube from the third bent portion, and the shaft tube The second fixing portion is configured by a spring plate having a second linear portion that extends straight in a direction approaching the clip body, and the second linear portion is fixed from the center portion to the tip portion of the clip body. Since the length of the first linear portion is longer than the length of the upright portion and the first and second fixing portions are separated , the separation operation of the clip can be easily performed.
[Brief description of the drawings]
FIG. 1 is an external view showing an example of the present invention.
FIG. 2 is a longitudinal half sectional view of FIG.
FIG. 3 is a cross-sectional view of a main part showing a front shaft and a middle shaft, and a bottom view.
FIG. 4 is a longitudinal half sectional view showing the main part of the operation.
FIG. 5 is a top view showing a modified example of the knock member.
6 is a longitudinal sectional view of FIG.
FIG. 7 is a longitudinal half sectional view of an essential part showing a modified example of the core hardness display.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Shaft cylinder 2 Tip member 3 Grip member 4 Center shaft 6 Tip 7 Core protection tube 8 Repellent member 9 Clip 10 Ball part 11 Engagement part 12 Rear end part 13 Clip main body 14 Connection member 15 Bending part 16 Fixing part 17 Fixing part 18 core tank 19 joint member 20 chuck body 21 chuck ring 22 core detent member 23 elastic member 24 eraser holder 25 eraser 26 washer 27 knock member 28 O-ring 30 tail crown 31 seal 32 grip cylinder 33 ring member 34 knurl region 35 penetrating Hole 36 Elastic protrusion 37 Rubber elastic cylinder 38 Window hole 39 Window hole 40 Ring member 41 Joint member A Separation part B Separation distance

Claims (1)

An attachment structure in which a clip body is attached to a writing cylinder or a shaft cylinder of an electronic input pen with a spring-plate-shaped connecting member, and a tip end portion of the clip body biased by the shaft cylinder is a rear end portion of the clip body. A first fixing portion that is a fixing portion of the connecting member to the shaft tube and a second fixing portion that is a fixing portion of the connecting member to the clip body so as to be separated from the shaft tube by pressing. In the mounting structure in which the clip body is attached to the shaft tube with the connecting member such that the clip body is at a different position in the longitudinal direction of the shaft tube,
  The connecting member includes one end of the first fixing portion, an upstanding portion that stands up in a direction away from the shaft tube from the first fixing portion, and an end portion of the upright portion that extends toward the distal end of the shaft tube. A bent first bent portion, a first linear portion extending linearly from the first bent portion in a distal direction of the axial tube substantially parallel to the axial tube, and the shaft from the end of the first linear portion A second bent portion that is further bent in a direction away from the tube, a third bent portion that is further bent in a direction away from the shaft tube at the second bent portion, and is bent toward the distal end of the shaft tube; A spring plate having a second linear portion extending straight from the three bent portions toward the tip of the shaft tube and in a direction approaching the shaft tube;
  Fixing the second linear portion from the center to the tip of the clip body to form the second fixing portion;
  The writing instrument or the clip to the shaft cylinder of the electronic input pen, wherein the length of the first linear portion is longer than the length of the upright portion to separate the first and second fixing portions Body mounting structure.

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