JP5705508B2 - Movable clip - Google Patents

Description

  The present invention relates to a movable clip, and more particularly to a movable clip of a writing instrument.

  As a writing instrument clip, for example, Patent Document 1 discloses a writing instrument including a movable clip that is spring-biased.

  In the writing instrument of Patent Document 1, a support column is formed so as to protrude from the shaft tube in a direction perpendicular to the shaft tube, and the column is provided with a pin-like portion extending in a direction orthogonal to the support column.

  The clip can be rotated bi-directionally with the connecting portion between the pin-shaped portion of the support and the engagement hole on both sides of the clip as a fulcrum, and is always urged in the direction in which the clip is closed by the urging force of the coil spring.

Japanese Patent No. 4518915

  In the writing instrument of Patent Document 1, since the clip rotates with a pin-shaped portion provided on a support column protruding upward from the shaft cylinder as a rotation fulcrum, the clip rotates at a position separated from the shaft cylinder. However, it is inevitable that it will become large and give a rustic impression.

  The present invention is a novel and novel movable clip (and can provide a smart appearance, for example) that can effectively avoid clip disengagement while ensuring the function as a clip, and can increase the degree of freedom of design (and can obtain a smart appearance). The problem is to provide a writing instrument.

In order to solve the above problems, the first aspect of the present invention provides:
A clip movably attached to the base,
The clip body,
A pair of clip legs projecting from the clip body;
A pair of concave surfaces formed in the base,
Each clip leg touches each concave surface,
It is a movable clip characterized by having a through hole that fits with a support pin protruding from each concave surface and constitutes a fulcrum of clip rotation.

The second aspect of the present invention is:
In the movable clip according to the first aspect,
The pair of clip legs is a movable clip characterized by having a mutual symmetrical shape that sandwiches a base from both sides.
The third aspect of the present invention is:
In the movable clip according to the first or second aspect,
The pair of clip legs has a convex surface that contacts the pair of concave surfaces having a curved portion, and constitutes a stopper structure that restricts the rotation of the clip.

The fourth aspect of the present invention is:
In the movable clip according to the first or second aspect,
The movable clip is characterized in that the base is provided with a convex rib.
The fifth aspect of the present invention is:
In the movable clip according to the fourth aspect,
A clip main body is a movable clip characterized by comprising a stopper structure which restricts clip rotation with a convex rib.
The sixth aspect of the present invention is:
In the movable clip according to the fourth or fifth aspect,
The movable clip characterized in that the convex rib is positioned between the two clip legs at least for reducing the clip detachment.

The seventh aspect of the present invention is:
A shaft,
In a writing instrument including a clip movably attached to a shaft body,
The clip body,
A pair of clip legs projecting from the clip body;
A pair of curved concave surfaces having a curved portion formed in the shaft body;
Each clip leg is in contact with each curved concave surface,
It is a writing instrument characterized by having a through hole that fits with a support pin projecting from both sides of the notch and constitutes a fulcrum for clip rotation.

According to the present invention, it is possible to effectively avoid clip detachment while maintaining a clip function equivalent to or higher than that of the prior art, and it is possible to expand the degree of freedom of product design related to the clip.
The above and other objects, features, and advantages (effects) of the present invention will be apparent to those skilled in the art from the description of the embodiments of the present invention and the drawings.

  Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings, but it goes without saying that the present invention itself is not limited thereto.

[First Embodiment]
With reference to FIGS. 1-10, the writing instrument 1 of 1st Embodiment of this invention is demonstrated. The writing instrument 1 is a mechanical pencil that can feed a pencil lead from the tip of the writing instrument by a predetermined amount by one knock (one pressing operation).

  The writing instrument 1 of the present embodiment shown in FIG. 1 as a whole is not shown in its internal structure, but is a central part that is arranged in the center of the internal part and forms the main part of the core feeding mechanism, and a tip that concentrically covers the front part of the central part. Connected to the rear end of the cassette 3, the gold 3, the middle shaft 5 and the rear shaft 7, which are connected to the tip 3 and cover the rear part of the cassette concentrically, the tail crown 9 attached to the rear part of the rear shaft 7, A knock bar 11 for feeding the core protruding from the rear end of the tail crown. Since these writing instrument components themselves are not directly related to the present invention, further explanation is omitted.

  As shown in FIGS. 2 to 4, the tail crown 9 of the writing instrument 1 is provided with a clip 13 that sandwiches an object and a coil spring 15 that is a source of clip force generated by the clip 13.

  As shown in FIGS. 5-7, the clip 13 is comprised from the long plate-shaped clip main body 13a extended along a writing instrument longitudinal direction.

  A semicircular clip ball portion 17 constituting a clip force acting portion is formed on the inner surface of the clip main body 13a on the tip side facing the rear shaft 7.

  A pair of mutually symmetrical clip leg portions 13b extending in the direction of the tail crown are formed on both sides of the rear portion of the clip main body 13a so that the tail crown 9 can be elastically sandwiched.

  A curved convex surface 13c is formed at one corner (the left side in FIG. 5, that is, the writing tool front end side) of each clip leg 13b, and the other corner (right side, that is, the writing tool rear end side in FIG. 5) is a tapered surface 13d. Is formed.

  As will be described later, the tapered surface 13d constitutes a stopper structure that abuts and engages with a corresponding surface of the tail crown 9 when the clip rotates to prevent further opening of the clip 13.

  At the center of the tip of each clip leg 13b, there is provided a through-hole 13e for connecting with the tail crown 9 so that the clip 13 can be rotated around the center.

  A recess (spring receiving portion) that restrains the outer periphery of one end of the coil spring 15 is provided on the inner surface of the rear portion of the clip main body 13a.

  As shown in FIGS. 8 to 10, the tail crown 9 is inserted into the large-diameter portion 19 and the large-diameter portion 19 in a form in which the ring-shaped portion 19 a and the lower half-ring-shaped portion 19 b are connected. A small-diameter portion 21 having a slightly smaller diameter.

  A rectangular flat spring receiving surface 21a (spring receiving portion) is provided on the rear end side of the small diameter portion 21 (tail crown 9), and the inner periphery of the other end of the coil spring 15 is constrained on the spring receiving surface 21a. A frustoconical protrusion 21b (projecting upward in FIG. 8) is provided.

  The coil spring 15 is reliably restrained by the depression (spring receiving portion) of the clip main body 13 a and the ridge 21 b (spring receiving portion) of the small diameter portion 21 of the tail crown 9. That is, the rational spring support structure can effectively prevent the coil spring 15 from dropping off.

  In the vicinity of the spring receiving surface 21a of the small diameter portion 21 (tail crown 9), a support pin 23 is provided at a position where the tip of each clip leg portion 13b faces when the clip is attached.

  The support pins 23 protrude from the both sides of the small diameter portion 21 by the same length so as to face each other by 180 degrees.

  The support pin 23 can be formed integrally with the small-diameter portion 21 (tail crown 9), that is, can be molded as a single part, or can be assembled separately.

  On both sides of the small-diameter portion 21, the corresponding support pins 23 are fitted into the through holes 13e of the respective clip leg portions 13b, and the spring receiving portions (dents) of the clip main body 13a and the spring receiving surfaces 21a ( A coil spring 15 is mounted between the ridges 21b).

  Thereby, the clip 13 can rotate via the pivot structure of the through-hole 13e of the clip leg part 13b, and the support pin 23. FIG. On the other hand, the clip 13 is constantly urged by the coil spring 15 in the direction in which the clip is closed.

  When the clip 13 is rotated against the urging force of the coil spring 15, the tapered surface 13d at the tip corner of each clip leg 13b abuts against the flat surface 19c of the semi-ring-shaped portion 19b of the large diameter portion 19. Engagement prevents further rotation of the clip leg 13b, thus preventing further rotation of the clip 13.

  The curved convex surface 13c at the tip corner of the clip leg 13b is arranged so as to be in sliding contact with the curved concave surface 19d at the connection point between the ring-shaped portion 19a and the semi-ring-shaped portion 19b of the large-diameter portion 19 of the tail crown 9. . In addition, it can also comprise so that 13c and 19d may not slide-contact so that it may not interfere.

  This configuration can be useful for preventing the clip 13 from coming off in the axial direction and reducing the load on the support pin 23 when an external force that pushes or pulls the clip 13 toward the tip end of the writing instrument is relatively applied. .

  Hereinafter, the process of attaching the clip 13 to the tail crown 9 will be briefly described.

  First, the clip 13 is pushed forward (closer to the tail crown 9) while being positioned so as to sandwich the support pin 23 between both clip legs 13b.

  The clip leg 13 b is elastically expanded by the support pin 23 as the clip 13 is pushed forward.

  Finally, the support pin 23 snaps into the through hole 13e of the clip leg portion 13b, and the clip leg portion 13b returns to the normal state (FIGS. 2 and 3). Thereby, the attachment of the clip 13 is completed.

  When removing the clip 13 from the tail crown 9, for example, one clip leg portion 13b is expanded and the support pin 23 is removed from the through hole 13e of the clip leg portion 13b. It is sufficient to expand the leg portion 13b and remove the support pin 23 from the through hole 13e of the clip leg portion 13b.

  As described above, in the first embodiment, the clip 13 rotates with the connecting portion between the through hole 13e of the clip leg portion 13b and the support pin portion 23a of the tail crown 9 (small diameter portion 21) as a fulcrum. In practice, this fulcrum exists in the curved concave surface 19d formed in the tail crown 9, and therefore the mounting height of the clip 13 can be considerably reduced.

  From the viewpoint of reducing the mounting height of the clip 13, it is sufficient that at least a part of the support pin 23 occupies the curved concave surface 19d formed in the tail crown 9.

  Since the gap between the clip 13 and the writing instrument body (tail crown 9) can be considerably narrowed, the clip can be designed to increase its strength and durability, and the degree of freedom in clip design (writing instrument design) is increased. To do.

Furthermore, in the first embodiment, it is possible to easily and reliably prevent the clip 13 from being opened excessively only by providing the tapered surface 13d at the tip corner portion of the clip leg portion 13b.
Further, the clip 13 can be prevented from coming off in the axial direction by a step (curved concave surface 19d or the like) between the small diameter portion 21 and the large diameter portion 19.

[Second Embodiment]
Next, with reference to FIGS. 11-19, the writing instrument of 2nd Embodiment of this invention is demonstrated briefly. In addition, about the same element and part as the said 1st Embodiment, the same referential mark is attached | subjected to the required limit, the overlapping description is abbreviate | omitted suitably, and a characteristic part is explained in full detail. The same applies to a third embodiment and a fourth embodiment described later.

  The writing instrument of the second embodiment includes (i) not only one corner (the left side in FIG. 5, that is, the leading end side of the writing instrument) but also the other corner (the right side in FIG. 14, that is, the rear end side of the writing instrument). The curved convex surface 13f is formed in a round shape. Therefore, the entire tip of the clip leg 13b is a semicircular curved convex surface (13c and 13f) (FIG. 14), and (ii) the clip. A corresponding surface corresponding to the other corner of the tip of the leg portion 13b is formed on the curved concave surface 19e (FIG. 17), and a terminal end portion 19f (FIG. 17) of the curved concave surface 19e is a flat side surface on the rear side of the tip of the clip leg 13b. 13g (FIG. 14) abuts and engages to restrict clip rotation (FIG. 13).

  In the second embodiment, it is possible to obtain the same effect as the excellent effect of the first embodiment.

[Third Embodiment]
Next, with reference to FIGS. 20-28, the writing instrument of 3rd Embodiment of this invention is demonstrated succinctly.

  The writing instrument of the third embodiment is provided with a convex rib 25 projecting in the clip direction on the tail crown 9, and clip rotation is restricted by contact and engagement between the convex rib 25 and the clip 13 (clip inner surface). It is a feature.

  More specifically, the convex rib 25 is formed of a cubic block portion that protrudes toward the inner surface of the clip so as to be orthogonal to the support pin 23. The corner of the tip (upper end) on the writing tool rear side is chamfered in a taper shape, and the taper surface 25a abuts and engages the clip inner surface to limit the opening of the clip.

  In the third embodiment, in addition to being able to obtain the same effects as the excellent effects in the first and second embodiments, the clip 13 itself is directly connected to the convex rib 25 instead of the clip leg 13b. Because of the structure for supporting (contacting / engaging), it is possible to further improve the durability of opening and closing the clip.

  Further, it is possible to further increase the degree of freedom in designing the clip leg portion 13b and the tail crown 9 (design with a sense of unity, etc.). Furthermore, the rigidity of the clip 13 (resistance against bending, twisting, and detachment) can be further increased due to the structure in which the convex rib 25 can be sandwiched between the bases of the clip legs 13b.

[Fourth Embodiment]
Finally, with reference to FIGS. 29-35, the writing instrument of 4th Embodiment of this invention is demonstrated concisely.

  In the writing instrument according to the fourth embodiment, the convex rib 27 provided on the upper side of the support pin 23 is composed of an L-shaped plate portion, and a protrusion 13 h is provided on the inner surface of the clip so as to face the convex rib 27. The rotation of the clip is restricted by the contact and engagement between the projection 13h and the projection 13h.

  In the fourth embodiment, in addition to being able to obtain the same effect as the excellent effect in the third embodiment, the clip leg 13h bridges the clip leg portions 13b so as to be orthogonal to each other. It functions as a reinforcing member that restricts the mutual expansion of the portions 13b, and the clip leg portion 13b (through hole 13e) can be made difficult to come off from the support pin portion 23a.

  The present invention is not limited to the first to fourth embodiments, and various modifications and changes can be made within the scope of the present invention, that is, within the scope described in the claims. Is possible.

  For example, in this embodiment, the writing instrument is an application target of the present invention, but the principle of the present invention is not limited thereto. That is, the present invention can be applied not only to a mechanical pencil but also to various writing instruments such as a ballpoint pen and a fountain pen. For example, a coordinate input pen (stylus) or pen-type (laser) used in a graphic tablet is used. ) Widely applicable to non-writing instruments such as pointers.

It is a whole front view of the writing instrument of 1st Embodiment of this invention. It is a side view of the clip attachment part of 1st Embodiment. It is a rear view of the clip attachment part of 1st Embodiment. It is a side view of the clip attachment part of the clip open state of 1st Embodiment. It is a side view of the clip of 1st Embodiment. It is a top view of the clip of a 1st embodiment. It is a rear view of the clip of 1st Embodiment. It is a side view of the tail cap of a 1st embodiment. It is a top view of the tail cap of a 1st embodiment. It is a rear view of the tail crown of a 1st embodiment. It is a side view of the clip attachment part of 2nd Embodiment of this invention. It is a rear view of the clip attachment part of 2nd Embodiment. It is a side view of the clip attachment part of the clip open state of 2nd Embodiment. It is a side view of the clip of 2nd Embodiment. It is a top view of the clip of 2nd Embodiment. It is a rear view of the clip of 2nd Embodiment. It is a side view of the tail cap of a 2nd embodiment. It is a top view of the tail cap of a 2nd embodiment. It is a rear view of the tail crown of 2nd Embodiment. It is a side view of the clip attachment part of 3rd Embodiment of this invention. It is a rear view of the clip attachment part of 3rd Embodiment. It is a side view of the clip attachment part of the clip open state of 3rd Embodiment. It is a side view of the clip of 3rd Embodiment. It is a top view of the clip of 3rd Embodiment. It is a rear view of the clip of 3rd Embodiment. It is a side view of the tail crown of a 3rd embodiment. It is a top view of the tail cap of a 3rd embodiment. It is a rear view of the tail crown of 3rd Embodiment. It is a side view of the clip attachment part of 4th Embodiment of this invention. It is a partial cross section side view of the clip attachment part of 4th Embodiment. It is a rear view of the clip attachment part of 4th Embodiment. It is a partial cross section side view of the clip attachment part of the clip open state of 4th Embodiment. It is a side view of the tail cap of a 4th embodiment. It is a top view of the tail cap of a 4th embodiment. It is a rear view of the tail crown of 4th Embodiment.

DESCRIPTION OF SYMBOLS 1 Writing instrument 3 Tip 5 Center shaft 7 Rear shaft 9 Tail crown 11 Knock bar 13 Clip 13a Clip main body 13b Clip leg 13c Curved convex surface 13d Tapered surface 13e Through-hole 13f Curved convex surface 13g Side surface 13h Projection 15 Coil spring 17 Clip ball portion 19 Large diameter portion 19a Ring-shaped part
19b Semi-ring-shaped portion 19c Elongated plane portion 19d, 19e Curved concave surface 19f End portion 21 Small diameter portion 21a Spring receiving surface 21b Raised 23 Support pin 25, 27 Convex rib 25a Tapered surface

Claims (5)

A clip movably attached to the base,
The clip body,
A pair of clip legs projecting from the clip body;
A pair of concave surfaces formed in the base,
Each clip leg touches each concave surface,
Engaged with the support pin projecting from the respective concave have a through hole that constitutes the fulcrum of the clip rotation,
The base is provided with convex ribs,
The clip main body constitutes a stopper structure that restricts clip rotation together with a convex rib . A clip movably attached to the base,
The clip body,
A pair of clip legs projecting from the clip body;
A pair of concave surfaces formed in the base,
Each clip leg touches each concave surface,
Engaged with the support pin projecting from the respective concave have a through hole that constitutes the fulcrum of the clip rotation,
The base is provided with convex ribs,
The inner surface of the clip body is provided with a protrusion facing the convex rib,
The movable clip is characterized in that the rotation of the clip is restricted by contact and engagement between the convex rib and the protrusion . The movable clip according to claim 1 or 2,
The pair of clip leg is movable clip and having a convex surface in contact with the pair of concave having a curved portion. The movable clip according to any one of claims 1 to 3 ,
The movable clip characterized in that the convex rib is positioned between the two clip legs at least for reducing the clip detachment. A writing instrument comprising the movable clip according to any one of claims 1 to 4 .

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