JP5064320B2 - Knock-type pen - Google Patents

Description

  The present invention relates to a knock-type pen, and more specifically, a knock-type of a type in which a core of a desired color is projected and retracted from a tip of a shaft cylinder by operating a knock whose part (finger hook portion) protrudes from the upper portion of the shaft cylinder. It is about a pen.

  Knock pens of the above type (for example, black and red two-color ballpoint pens) are widely available in various designs. The knock there is composed of a knock main body 31 fitted with a core 34 at the lower end and constantly urged upward by a push-up spring wound around the upper part of the core 34, and an action part 32 assembled to the upper part of the knock main body 31. (See FIGS. 7 and 8). The action part 32 is assembled to the knock body 31 simply by fitting the fitting part 35 formed on the inner surface of the action part 32 into the engagement opening 36 formed in the knock body 31. At this time, the hooks 37 formed on both sides of the front end of the fitting part 35 are hooked on both inner side edges of the engagement opening 36.

  The action portion 32 has a finger hook portion 33 protruding outward from a slit formed in the vertical direction on the upper side portion of the shaft tube, and when the finger hook portion 33 is pressed, the knock main body 31 is pressed. Thus, the lead 34 can be fed out. The knock is locked at the pushing end to keep the core 34 exposed, and when the other knock is pushed down to release the lock, it returns to its original position by the action of the push-up spring. The lead 34 is drawn into the shaft tube.

  In the case of the conventional knock, the finger hook portion 33 protruding from the upper surface of the shaft cylinder of the action portion 32 only slightly protrudes from the slit at the upper portion of the shaft tube (see the finger hook portion 33a of the phantom line in FIG. 8). Since the force applied to the finger hooking portion 33a is directed obliquely inward, the engagement relationship between the knock main body 31 and the action portion 32 is as described above, and there is no problem.

  In the knock type pen of the above mechanism, the present applicant enlarges the pair of finger hooks 33 so as to look like an animal or a character's ear, a frog's eye, or the like, and the face of the animal or the character, etc. We designed a product with a design (see Figs. 7 and 8).

  However, when the finger hook portion 33 is formed so as to protrude outward in this way, the force applied to the finger hook portion 33 from the fingertip is applied in the outward direction, particularly at the pressing end (see FIG. 8). As a result, it was found that despite the presence of the hook portion 37, the fitting portion 35 is detached from the engagement opening 36, and the action portion 33 is easily dropped from the slit of the shaft tube.

JP 2001-310592 A JP 2000-233596 A JP-A-5-246191 Utility Model Registration No. 3049666

  As described above, in the knock type pen, when the finger hook part of the action part is formed so as to project outward, the action part is released by the force applied to the finger hook part obliquely outward from the fingertip, and the shaft There was a problem that it was easy to drop off from the slit of the tube. Therefore, the present invention provides a knock-type pen that does not cause the action part to drop off due to a diagonally outward force applied to the finger-hanging part during a pressing operation even when the action part of the knock-type pen is formed to be large. It is an issue to provide.

The invention according to claim 1 for solving the above-mentioned problem is a pen of a type in which a lead is selectively projected and retracted by a push-down operation of the knock, and the knock is fitted with a lead at a lower end by the action of a spring. It consists of a knock body that is constantly biased upward, and an action part that has a finger hook portion that projects greatly outward from the shaft cylinder and is assembled to the knock body.
The assembly of the working unit with respect to the knock body is done by fitting the fitting portion provided in a little part of the upper from the lower end of the inner side surface of the working portion engaging opening formed in the knock body,
The fitting portion has a height and a width corresponding to the height and width of the engagement opening, and has an upper surface that is longer than the depth of the engagement opening, and the upper surface rises at a tip edge thereof. A protrusion is formed on the inner side upper part of the action part, and a holding hole into which the protrusion is fitted is formed in the knock body.
When the fitting portion is fitted into the engagement opening, the upper surface of the fitting portion comes into contact with the inner top surface of the engagement opening, and the rising portion is an upper edge on the inner surface side of the engagement opening. And an extension portion extending below the fitting portion on the inner side surface of the action portion is locked to the lower edge portion on the outer surface side of the engagement opening, and the protrusion on the inner side surface of the action portion. Is a knock-type pen that fits into the holding hole of the knock body .

Preferably, finger rest of the front Symbol acting portion is formed in a shape resembling the ears and eyes of animals or characters to the end of the finger placement portion side of the barrel, wherein the animal or character, etc. The face corresponding to the ears and eyes is expressed.

  In addition, a middle shaft portion fitted to the detachable tip portion of the shaft tube is provided, and a trunk portion or a clothing corresponding to an animal, a character, or the like represented on the end portion of the action portion and the shaft tube is provided on the middle shaft portion. Sometimes expressed. In that case, in order to facilitate the alignment of the body portion in the middle shaft portion and the ears, eyes, or face, a knurling is formed at the upper end of the middle shaft portion, and the knurling contact portion in the shaft tube It is preferable to provide a stopper that engages with the knurl.

  The present invention is as described above, and the assembly of the action portion to the knock body is performed by fitting a fitting portion having a rising portion on the upper surface edge into an engagement opening formed in the knock body. Since the rising portion is hooked to the inner upper edge portion of the engagement opening during the fitting, even if a pressing force in an obliquely outward direction is applied to the finger hooking portion that protrudes largely outward from the shaft tube There is an effect that there is no possibility that the fitting part comes out of the engagement opening and the action part comes off the knock main body and falls off.

  Further, in the invention according to claim 3 or 4, the finger-hanging portion has a large shape resembling the ears or eyes of an animal or character, and the face of the animal or character on the end of the shaft tube on the finger-hanging portion side. This makes it possible to create a knock-type pen with a variety of tastes and changes, with animal and character heads at the ends. It has the effect of being widely accepted as an interesting item.

  Furthermore, in the invention which concerns on Claim 5, since the trunk | drum or clothing corresponding to the said animal, a character, etc. are expressed to the said center axis | shaft part, it becomes possible to express an animal, a character, etc. in the whole trunk | drum. In this case, a knurling is formed at the upper end of the middle shaft portion, and a stopper that engages with the knurling is provided at the knurling contact portion of the shaft cylinder. There is an effect that the positioning of the body portion in the middle shaft portion and the ear, eye, or face becomes easy.

  The best mode for carrying out the present invention will be described with reference to the accompanying drawings. The knock type pen according to the present invention shown in FIG. 1 is one for selecting and projecting one of two cores 2 of different colors, and like a general one, a shaft cylinder 1 and a shaft cylinder 1 The two types of cores 2 that protrude from the tip of the core 2 and a pair of knocks 3 that perform the feeding operation of the cores 2 are configured, and each knock 3 is configured by assembling the action part 5 to the knock body 4.

  The lower end portion of the knock body 4 is a small-diameter fitting portion 4a as in the conventional case, and the core 2 is fitted therein, and the knock body 4 is wound around the upper end portion of the core 2. The push-up spring 6 is supported so as to be constantly biased upward.

  The action part 5 has a finger hook part 7 which is large and projects outward at the upper end thereof. As an example, the finger hook portion 7 has a large shape that looks like an ear or an eye of an animal or a character, and the ear and eyes are represented by the pair of left and right finger hook portions 7. Then, by expressing the face of the animal, character, or the like at the end of the barrel 1, a knock type pen having a rich shape with a head of the animal, character, etc. at the end can be obtained. it can.

  Further, a middle shaft portion 16 fitted to the removable tip portion 15 of the shaft tube 1 is provided, and this middle shaft portion 16 corresponds to an animal, a character, or the like expressed at the action portion 5 and the end portion of the shaft tube 1. A torso or clothing may be expressed (see FIG. 6). In that case, a knurling 17 is formed on the upper end of the middle shaft portion 16 in order to facilitate the alignment of the body portion or the clothing in the middle shaft portion 16 with the ears, eyes, or face at the end portions of the action portion 5 and the shaft tube 1. It is preferable to provide a stopper 18 that engages with the knurling 17 at the knurling contact portion on the inner side of the lower end of the shaft tube 1.

  The pair of knocks 3 having such a configuration is incorporated in the shaft cylinder 1 in the same manner as the conventional one with the core 2, and in this state, the action part 5 is a slit formed in the upper part of the shaft cylinder 1. 14 can move up and down. Since the operation of projecting and retracting the core 2 by pushing down the knock 3 and the locking mechanism of the knock 3 are not different from general ones, detailed description is omitted.

The action part 5 has a fitting part 8 to be fitted in an engagement opening 11 formed in the knock main body 4 at the lower part of the inner side surface thereof, as in the prior art . The fitting part 8 is provided in a part slightly above the lower end of the inner side surface of the action part 5, and the extension part 5a is left under the fitting part 8 forming part of the action part 5 (see FIGS. 2 and 3). . The extending portion 5a contacts the outer surface side lower edge portion 12a of the engaging opening 11 when the engaging portion 11 is fitted in the engaging opening 11 (see FIGS. 4 and 5). The fitting portion 8 has a height and a width corresponding to the height and width of the engagement opening 11 and is longer than the depth of the engagement opening 11 in order to closely fit in the engagement opening 11. Has a long upper surface 8a. In addition, a latching rising portion 9 is formed at the tip edge of the upper surface 8 a of the fitting portion 8. The rising portion 9 is hooked on the upper edge portion 12 of the engagement opening 11 when the fitting portion 8 is fitted into the engagement opening 11, and thereby, the engagement portion 11 is disengaged from the engagement opening 11. Omission is prevented. Further, when the fitting portion 8 is fitted in the engagement opening 11, the extension portion 5 a of the action portion 5 is locked to the outer surface side lower edge portion 12 a of the engagement opening 11. This contributes to prevention of disconnection from the engagement opening 11.

  In addition, a protrusion 10 is provided on the upper part of the inner side surface of the action portion 5, and a support hole 13 into which the protrusion 10 is fitted is formed in a corresponding surface of the knock body 4. The protrusion 10 is inserted into the support hole 13 and held there when the fitting portion 8 is fitted into the engagement opening 11, thereby enhancing the integrity of the action portion 5 and the knock body 4. At the same time, this contributes to prevention of the fitting part 8 from coming off from the engagement opening 11. In addition, the fitting part 8 may be a block body as shown in FIGS. 2 and 3 or may be a frame provided with a frame as shown in FIG.

  In the knock type pen according to the present invention having such a configuration, the finger-hanging portion 7 has a large shape that looks like an ear or an eye of an animal or character, and the face of the animal or character or the like is at the end of the shaft tube 1. It is expressed, and the body part of the animal or character is expressed on the central shaft part 16, so that it is rich in taste and change, not only for writing purposes, but also a kind of function goods Is acceptable.

  The usage method of the knock type pen is basically the same as a general one, and the action portion 32 is a finger hook portion 7 that largely protrudes outward from the slit 14 formed in the vertical direction on the upper side portion of the shaft tube. By pressing one of the two, the knock body 4 on the side is pressed and the core 2 on the side can be fed out. Then, the knock 3 is locked at the pushing end, and the exposed state of the core 2 is maintained until the other knock 3 is pushed. When the other knock is pushed and unlocked, the push-up spring 6 It returns to its original position by the action, and the core 2 is pulled into the shaft tube 1 along with it.

Since the finger hook portion 7 of the action portion 5 in the present invention protrudes greatly outward, a force in an obliquely outward direction is applied during the pressing operation. However, the action portion 5 not only engages the fitting portion 8 in the engagement opening 11 relatively tightly, but also rises when the inclination portion is depressed in accordance with the pressing operation. Is more strongly hooked to the inner surface side upper edge portion 12 of the engagement opening 11 and the extension portion 5a of the action portion 5 is locked to the outer surface side lower edge portion of the engagement opening 11, so that the fitting portion 8 will not come out of the opening 11 for engagement, and there is no possibility that the action part 5 will come off the knock body 4 and fall off.

  In addition, since the projection 10 is fitted in the insertion hole 13, the coupling relationship between the action portion 5 and the knock body 4 is further strengthened, and even if a large force is applied to the finger hook portion 7, Dropout is surely prevented.

  Although the present invention has been described in some detail with respect to its most preferred embodiments, it will be apparent that a wide variety of different embodiments can be constructed without departing from the spirit and scope of the invention, the invention being defined by the appended claims. It is not restricted to the specific embodiment other than limiting in.

It is a figure which shows the external appearance of one Embodiment of this invention, and the cross section of the principal part. It is a disassembled perspective view which shows the structure of the knock of one Embodiment of this invention from an inner side. It is a disassembled perspective view which shows the structure of the knock of one Embodiment of this invention from an outer side. It is a side view which shows the structure of the knock of one Embodiment of this invention. It is a longitudinal cross-sectional view which shows the structure of the knock of one Embodiment of this invention. It is an exploded view which shows the structure of other embodiment of this invention. It is a disassembled perspective view which shows the structure of the conventional knock from an inner side. It is a side view for demonstrating the problem of the conventional knock.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shaft cylinder 2 core 3 Knock 4 Knock body 5 Action part 6 Push-up spring 7 Finger hook part 8 Fitting part 9 Rising part 10 Protrusion 11 Engagement opening 12 Inner side upper edge part 13 Insertion hole 14 Slit 15 Tip part 16 Middle axis Part 17 Knurl 18 Stopper

Claims (5)

A pen of a type in which a lead is selectively projected and retracted by a pushing operation of the knock, and the knock is attached to the lower end of the pen and is always pushed upward by the action of a spring, and the pen is largely disengaged from the shaft cylinder. It has a finger hook portion projecting toward the direction and an action portion assembled to the knock body,
The assembly of the working unit with respect to the knock body is done by fitting the fitting portion provided in a little part of the upper from the lower end of the inner side surface of the working portion engaging opening formed in the knock body,
The fitting portion has a height and a width corresponding to the height and width of the engagement opening, and has an upper surface that is longer than the depth of the engagement opening, and the upper surface rises at a tip edge thereof. A protrusion is formed on the inner side upper part of the action part, and a holding hole into which the protrusion is fitted is formed in the knock body.
When the fitting portion is fitted into the engagement opening, the upper surface of the fitting portion comes into contact with the inner top surface of the engagement opening, and the rising portion is an upper edge on the inner surface side of the engagement opening. And an extension portion extending below the fitting portion on the inner side surface of the action portion is locked to the lower edge portion on the outer surface side of the engagement opening, and the protrusion on the inner side surface of the action portion. Is inserted into the holding hole of the knock body .   The knock-type pen according to claim 1, wherein a finger hook portion of the action portion is formed in a shape resembling an ear or an eye of an animal or a character.   The knock type pen according to claim 2, wherein a face portion corresponding to an ear or an eye of the animal or character is expressed at an end portion of the shaft tube on the finger hook portion side. The intermediate shaft portion to be fitted to the detachable tip of the barrel is provided, on the inner shaft portion, a barrel or clothes corresponding to the animal or character or the like which is expressed on the end of the working portion and the barrel The knock type pen according to claim 3 expressed.   In order to facilitate the alignment of the body portion in the middle shaft portion and the ears, eyes, and face portion, a knurl is formed at the upper end of the middle shaft portion, and the knurled contact portion in the shaft tube is formed on the knurl. The knock type pen according to claim 4, further comprising a stopper to be engaged.

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