JP5502832B2 - Writing instrument - Google Patents

Description

  The present invention relates to a writing instrument, and more particularly, a writing instrument such as a ballpoint pen of a type that causes a lead to protrude from the tip of a shaft, and the lead feeding operation is performed by a method different from a conventional knock type or rotary type. It relates to a writing instrument that can be made in a form that is intriguing to the user.

  As a writing instrument of a type that causes a core such as a ballpoint pen to protrude from the tip of the pen, it is arranged at the head of the shaft tube, or a type of pushing down with a thumb or pulling down a knock arranged to protrude from the upper side surface of the shaft tube, A so-called knock type is common. As this knock type pen, various types of designs are on the market, such as a knock that looks like the head of an animal or character, and a shaft that is expressed as a torso corresponding to the head. (For example, refer to Japanese Utility Model Publication No. 7-21353).

  For example, in order to give the design features, the applicant first enlarges the pair of knocks arranged so as to protrude from the upper side surface of the shaft tube so that the ears of animals, characters, etc., frog eyes, etc. As a writing instrument that can be manipulated with interest by the user, it has been commercialized by proposing and commercializing a product (commonly known as an ear knock pen) with the face of the animal or character on the upper end of the barrel. It has been well received (Japanese Patent Laid-Open No. 2010-12743).

  However, even with such an interestingly designed knock type pen, the insertion / removal of the lead is ultimately caused by pressing or pulling down the knock with the thumb, and the lead-out operation itself cannot be replaced. . In addition, there is a type in which the upper part of the shaft cylinder is rotated with respect to the lower part to make the core appear and disappear. However, in that case, the structure becomes relatively complicated and the cost tends to increase, which is not general.

Japanese Utility Model Publication No. 7-21353 JP 2010-12743 A

  As described above, in the conventional knock-type pen, the lead feeding operation is such that the knock placed on the head of the shaft tube or pushed out from the upper side surface of the shaft tube is pressed or pulled down with the thumb. The operation itself does not work. SUMMARY OF THE INVENTION An object of the present invention is to provide a writing instrument that can perform a change operation of a lead by a novel method that has not been used in the past while enjoying changes, and can be finished in various intriguing forms.

The invention according to claim 1 for solving the above-described problem is provided with a shaft cylinder that allows a stored core to protrude from a tip end portion thereof, and a rear end portion of the shaft cylinder that is rotatable in a direction perpendicular to the shaft cylinder. And an operating portion that acts to cause the core to protrude and retract from the distal end portion of the shaft cylinder as it rotates, and the core is attached to the distal end portion of the core shaft of the core housed in the shaft cylinder. A return spring that biases in the sinking direction is assembled, and a driven cylinder that slides in the axial direction within the rear end of the shaft cylinder is attached to the rear end of the core shaft, A pivot supporting means for pivotally supporting the shaft cylinder, and a plate cam which acts on the driven cylinder in accordance with the pivoting operation and slides the driven cylinder in the rear end portion of the shaft cylinder in the axial direction. And the driven cylinder slides in the direction in which the driven cylinder is retracted into the shaft cylinder by the action of the plate cam. Issued, the plate Ri Do and the core is sinking state by the driven cylinder by the action of the cam slides in the direction out of the barrel, the barrel is provided with an insertion support portion for inserting supporting the Supported by a clip, the operation part is shaped like an animal head, the clip is shaped like a torso of the animal, and the tip of the barrel corresponds to the tail of the animal been a writing instrument characterized by Rukoto.

  In one embodiment, contact plates are provided on both sides of the insertion opening for receiving the rear end portion of the shaft tube of the operation portion, and extend inward to regulate the rotation angle of the shaft tube. When the cylinder comes into contact with one of the contact plates, the sunk state of the core is maintained, and when the shaft cylinder comes into contact with the other contact plate, the protruding state of the core is maintained. .

  In one embodiment, the plate cam is connected to a first end engaging portion formed on an inner surface of a piece constituting the operation portion, an arc portion extending therefrom, and an end portion of the arc portion. A second end engaging portion and a support portion extending from the second end engaging portion to the inner side surface of the piece, and a tip protrusion of the driven cylinder is engaged with the first end engaging portion. In some cases, the wicked state of the lead is maintained, and the lead-out state of the lead is maintained when the tip protrusion of the driven cylinder is engaged with the second end engaging portion. Further, the pivot means of the operation portion is an uneven portion that engages with an uneven portion formed on the peripheral surface of the shaft tube.

In one embodiment, prior Symbol clip is enabled upright in a state of inserting holding the barrel.

  Since the writing instrument according to the present invention has the above-described configuration, the lead in / out operation can be performed while enjoying the change by an unprecedented method of rotating the operation unit in the vertical direction with respect to the shaft tube, for example, Since the operation part is designed on the head of the animal and the core can be moved up and down by moving the head, the writing tool can be greatly intrigued by the user.

  In the invention which concerns on Claims 5 thru | or 8, a clip can be stood and a writing instrument can be supported, The said operation part is set as the design which imitated the head of the animal, and the said clip was designed as the model which simulated the trunk of the said animal. By doing so, it is possible to represent an animal standing on four legs in the standing state of the clip, and to enjoy the interesting design.

It is a perspective view which shows the structure of one Embodiment of the writing instrument which concerns on this invention. It is a disassembled perspective view which shows the structure of the axial cylinder part in one Embodiment of the writing instrument which concerns on this invention. It is a figure which shows the 1st process (state in which the lead was retracted) of the taking in / out operation of the lead in one Embodiment of the writing instrument which concerns on this invention. It is a figure which shows the 2nd process (state in which the lead has gone out) of the operation of putting in / out the lead in one Embodiment of the writing instrument which concerns on this invention. It is a figure which shows the 3rd process (state where the lead has been pulled out) of the taking in / out operation of the lead in one Embodiment of the writing instrument which concerns on this invention. It is a figure which shows the usage method of the clip in one Embodiment of the writing instrument which concerns on this invention. It is a figure which shows each different expression form of the writing instrument which concerns on this invention.

  Embodiments of the present invention will be described with reference to the accompanying drawings. The writing instrument according to the present invention is attached to a shaft cylinder 1 that feeds the housed core 2 from a tip end portion, and a rear end portion of the shaft cylinder 1 so as to be rotatable in a direction perpendicular to the shaft cylinder 1, and its rotating operation. And the operation unit 21 that acts to cause the core 2 to appear and disappear.

  A top 5 detachable by screw means is attached to the tip of the shaft tube 1. An opening 6 for projecting and retracting the core 2 is formed in the tip surface of the top 5, and the tip 5 is assembled in the tip 5 of the core shaft 3 that supports the core 2 at the tip part. A step portion 7 is formed for receiving the lower surface of the return spring 8 to be inserted. The upper surface of the return spring 8 is held down by a protrusion 4 formed on the side surface of the core shaft 3. The return spring 8 always urges the lead 2 to move in the direction in which the lead 2 is drawn into the opening 6 (leftward in FIG. 2).

  A driven cylinder 9 functioning as a cam follower is slidably fitted in the rear end portion (left end portion in FIG. 2) of the shaft tube 1. The driven cylinder 9 is formed in, for example, a cylindrical shape in which a conical tip protrusion 10 is formed at the tip, and when the driven cylinder 9 is fitted into the rear end of the shaft cylinder 1, the rear end of the core shaft 3 is inserted therein. The part is attached to the core shaft 3 by being inserted, and moves together with the core shaft 3 in the axial direction.

  On the side surface (usually, both side surfaces) of the rear end portion of the shaft cylinder 1, there is formed an uneven portion that is a means for pivotally supporting the operation portion 21 described later. The uneven portion in the illustrated example is a pivot hole 11 (which may or may not be penetrated) into which the protrusion 22 formed in the operation portion 21 is fitted. The relationship may be reversed. That is, a protrusion may be formed on the shaft tube 1 side, and a pivot hole into which the protrusion is fitted may be provided on the operation portion 21 side.

  The operation unit 21 is attached to the shaft cylinder 1 so as to be rotatable about the protrusion 22 and is generally configured by joining two pieces 23 formed in a substantially symmetrical shape. The protrusions 22 are formed on the inner surface of each piece 23, and one or a plurality of engaging means (concave / convex portions) 24 that engage with each other for facilitating the joining are formed. The operating portion 21 is rotatably attached to the end portion of the shaft tube 1 by fitting into the pivotal support hole 11 of the shaft tube 1 from both sides during assembly.

  Furthermore, the inner surface of one or both (usually both) pieces 23 acts on the driven cylinder 9 as the operating portion 21 rotates, and the driven cylinder 9 is axially moved in the rear end portion of the shaft cylinder 1. A plate cam 25 to be slid is provided. The plate cam 25 includes a first end engaging portion 26 formed on the inner surface of the piece 23, an arc portion 27 extending from the first end engaging portion 26, and a second end engaging portion 28 connected to the end portion of the arc portion 27. , And a support portion 29 extending from the second end engaging portion 28 to the inner surface of the piece 23.

  The first end engaging portion 26 and the second end engaging portion 28 are recessed portions into which the tip protruding portion 10 of the driven cylinder 9 is fitted, and the tip protruding portion 10 is accommodated in the first end engaging portion 26. Sometimes the sunk state of the core 2 from the opening 6 is maintained (see FIG. 3). Then, as the operating portion 21 rotates, the tip protrusion 10 disengages the first end engaging portion 26 and moves while slidingly contacting the arc portion 27, so that the core 2 is gradually exposed from the opening 6 (see FIG. 4). ) Eventually, the leading end protrusion 10 is accommodated in the second end engaging portion 28, and the core 2 is cut out, and the protruding state is maintained for writing (see FIG. 5).

  The operating portion 21 has an insertion opening 30 that is formed when the pieces 23 and 23 are joined, and receives the rear end portion of the shaft tube 1. In other words, the contact plates 31 and 32 respectively corresponding to the first end engaging portion 26 and the second end engaging portion 28 of the plate cam 25 extend inward so as to extend inward. Arranged in a shape. That is, the contact plate 31 on one side corresponds to the first end engaging portion 26, and the shaft cylinder 1 is brought into contact with the contact plate 31 when the tip protrusion 10 is fitted to the first end engaging portion 26. The contacted plate 32 on the other side corresponds to the second end engaging portion 28, and the tip protrusion 10 is engaged with the second end. When fitted to the portion 28, the shaft cylinder 1 comes into contact with the contact plate 32 and the centered state is maintained (state shown in FIG. 5).

  The writing instrument (writing instrument main body) having the above-described structure feeds the core 2 as described above and uses the shaft cylinder 1 for writing, but in one embodiment, the writing instrument main body is inserted to insert and support the shaft cylinder 1. It can support by the clip 41 provided with the support part. The clip 41 can be configured so as to function as a stand in addition to the original function of holding the object by forming it so that it can stand up in a state where the shaft tube 1 is inserted and supported.

  The clip 41 includes a pair of side plates 42 and 43 and a U-shaped leaf spring 44 disposed between the side plates 42 and 43, as in the case of a general clip (see FIGS. 1 and 6). Each of the side plates 42 and 43 is formed with a pair of shaft support plates 45 and 46 each provided with a shaft tube insertion port 47 that serves as an insertion support portion of the shaft tube 1. The shaft support plate 45 and the shaft support plate 46 are engaged with an annular groove provided at the peripheral edge of one of the shaft tube insertion ports 47 by engaging an annular protrusion provided at the periphery of the other shaft tube insertion port 47. The shaft tube 1 can be inserted through the shaft tube insertion port 47 of the shaft support plate 45 and the shaft support plate 46 which are coupled so as to be relatively rotatable.

  The side plates 42 and 43 having the end portions of the leaf springs 44 fixed to the inner surface of the upper part are opened and closed with the annular grooves and the annular ridges engaged with each other as a result of pushing the upper parts thereof. Since the holding function is achieved, the clip 41 can be held between the end portion of the notebook or any other position with the writing instrument main body supported or alone.

  The side plates 42 and 43 of the clip 41 can have any shape. For example, the side plates 42 and 43 of the clip 41 can be made to stand by extending a lower end portion horizontally and providing a flat portion 48. Further, for example, an animal can be expressed by a combination of the writing instrument and the clip 41. In this case, the operation unit 21 is used to represent the animal's head, the clip 41 is used to represent the trunk corresponding to the head, and the protruding tip of the barrel 1 is designed to represent the tail. be able to.

  For example, in FIG. 7A, a bear is represented, in FIG. 7B, a panda is represented, and in FIG. 7C, a tiger with a tilted neck is represented. In this way, by finishing the operation unit 21 and the clip in a corresponding form, various animals and characters can be expressed as a whole, and it is possible to provide stand-type writing instruments with various interesting designs. It becomes.

  Although the invention has been described in some detail with its most preferred embodiments, it is evident that a wide variety of embodiments can be constructed without departing from the spirit and scope of the invention. Accordingly, the invention is not limited to that particular embodiment, except as limited in the appended claims.

DESCRIPTION OF SYMBOLS 1 shaft cylinder 2 core 3 core shaft 5 top 6 opening 7 step part 8 return spring 9 driven cylinder 10 tip protrusion 11 pivot hole 21 operation part 22 protrusion 23 piece 25 plate cam 26 1st end engaging part 27 arc part 28 Second end engaging portion 29 Support portion 30 Insertion opening 31, 32 Contact plate 41 Clip 42, 43 Side plate 44 Plate spring 45, 46 Shaft support plate 47 Shaft cylinder insertion port

Claims (5)

A shaft cylinder for projecting and retracting the housed core from the front end portion and a rear end portion of the shaft cylinder are installed so as to be rotatable in a direction perpendicular to the shaft cylinder, and the core is attached to the front end of the shaft cylinder in accordance with the rotation. It consists of an operation part that acts to make it appear and disappear from the part,
A return spring that urges the core in the sunk direction is assembled at the tip of the core shaft of the core housed in the shaft cylinder, and the rear end of the core shaft is attached to the rear end of the shaft cylinder. A driven cylinder that slides in the axial direction inside the end portion is attached, and the operation section is provided with a pivot supporting means for rotatably supporting the axial cylinder, and acting on the driven cylinder in accordance with the rotation operation. A plate cam is provided for sliding the driven cylinder in the axial direction in the rear end portion of the shaft cylinder, and the driven cylinder slides in the direction in which the driven cylinder is retracted into the shaft cylinder by the action of the plate cam. is fed, the plate Ri Do and the core is sinking state by the driven cylinder by the action of the cam slides in the direction out of the barrel, the barrel is provided with an insertion support portion for inserting supporting the Supported by a clip, the operating part is shaped like an animal head, Is the body of the serial animals in the form that imitates the tip portion of the barrel is characterized Rukoto is in a form corresponding to the tail of the animal writing instrument.   Abutting plates that extend inward and restrict the rotation angle of the shaft tube are disposed on both sides of the insertion opening that receives the rear end portion of the shaft tube of the operation unit. 2. The writing instrument according to claim 1, wherein the state in which the core is depressed is maintained when contacting the contact plate, and the protruding state of the core is maintained when the shaft cylinder contacts the other contact plate.   The plate cam includes a first end engagement portion formed on an inner surface of a piece constituting the operation portion, an arc portion extending from the first end engagement portion, and a second end engagement provided continuously to an end portion of the arc portion. And a support portion extending from the second end engaging portion to the inner side surface of the piece, and the lead protrusion of the driven cylinder is engaged with the first end engaging portion. The writing instrument according to claim 1 or 2, wherein the state is maintained and the protruding state of the core is maintained when the tip protrusion of the driven cylinder is engaged with the second end engaging portion.   The writing instrument according to any one of claims 1 to 3, wherein the pivot means of the operation portion is a concavo-convex portion that engages with a concavo-convex portion formed on a peripheral surface of the shaft cylinder.   The writing instrument according to any one of claims 1 to 4, wherein the clip is allowed to stand in a state where the shaft cylinder is inserted and held.