JP3936598B2 - Writing instrument and clip for writing instrument - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a writing instrument provided with a clip capable of holding a piece of paper, an edge of a breast pocket of clothes, or the like.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been known a writing instrument including a writing instrument body, a clip body provided on the writing instrument body, and a clamping means that is configured by the writing instrument body and the clip body and can sandwich an object to be clamped such as a breast pocket of clothes. ing.
[0003]
In such a writing instrument, the writing instrument main body and the clip main body are often formed by integral molding with a single material such as synthetic resin. In addition, the clip body may be provided as a separate member from the writing instrument body. In this case, the clip main body is made of synthetic resin, metal, or the like, and is appropriately attached by being fitted to the writing instrument main body via an attachment portion provided on the clip main body.
[0004]
Thus, in order to store the writing implement in the chest pocket of the clothes, etc., the writing implement is to be inserted into the holding area formed between the writing implement main body and the clip main body such as the edge of the pocket. Manipulate. Here, the holding area specifically refers to an area partially surrounded by the writing instrument main body and the clip main body. Returning the story, for example, to place the writing instrument stably in the breast pocket, the edge of the chest pocket is inserted into the holding area by lowering the writing instrument with the opening in the holding area of the writing instrument facing down. The sandwiched object is held by the sandwiching means. At this time, the object to be clamped is inserted against the surface frictional resistance and clamping force of the clamping means. Further, after insertion, the edge of the breast pocket is held by these surface frictional resistance and clamping force, and the writing instrument is in a fixed position in the breast pocket. In addition, when taking out a writing implement from a breast pocket, it is made to perform operation reverse to the time of insertion.
[0005]
[Problems to be solved by the invention]
However, in these writing instruments, the surface frictional resistance of the clamping means is substantially constant within the same plane of the holding region, so that the force required to insert the writing instrument in both cases of inserting and removing the writing instrument. The force required to take out the writing instrument is almost the same. Accordingly, if the writing tool is easily inserted, the writing tool is easily pulled out, which causes a problem that the clip function is not performed. Alternatively, if the writing instrument is made difficult to be pulled out, there is a problem that the end of the object to be clamped breaks during insertion, making insertion difficult.
[0006]
[Means for Solving the Problems]
In view of the above problems, in the present invention, a clamping means that is configured by a writing instrument main body and a clip main body and that can clamp an object to be clamped such as a breast pocket of clothes is provided on the front side in the insertion direction of the object to be clamped. A guide portion and a holding portion that is located in the vicinity of the guide portion and that is provided on the back side in the insertion direction of the object to be clamped , and the guide portion and the holding portion continuously form one convex portion In addition , the writing tool is formed on the assumption that the guide portion and the holding portion are formed at the apex of the convex portion, and the surface friction resistance of the holding portion is higher than the surface friction resistance of the guide portion. Is to provide.
Furthermore, in the present invention, as a guide part and a holding part are provided on the clip body side, it is possible to constitute a holding means that can hold an object to be clamped such as a breast pocket of clothes together with the writing instrument body, the clip body, In a clip for a writing instrument provided with an attachment part attached to the writing instrument body, the clip body is located near the insertion direction of the object to be sandwiched, and is inserted in the vicinity of the guide part and inserted into the object to be sandwiched ; and a holding portion provided in the direction rear side, the guide portion and the holding portion and the said guiding portion and the boundary of the vertex of the convex portion to form a single convex portion continuously the holding portion And a clip for a writing instrument characterized in that the surface frictional resistance of the holding part is higher than the surface frictional resistance of the guide part.
[0007]
In such a case, at the beginning of inserting the object to be clamped, the object to be clamped can be smoothly inserted into the insertion region along the guide part having low frictional resistance, and if the guide part is further passed, the friction will occur. It will be in contact with the holding part with high resistance, and the object to be clamped can be stably held.
[0008]
In addition, in order to guide the object to be held to the holding part with high frictional resistance, the end of the object to be held is bent due to its high frictional resistance, making insertion difficult. Since the guide part is also provided to reliably guide the object to be clamped to the part, the end of the object is bent and cannot be inserted, or if the object to be clamped is paper, etc. And damage can be prevented.
[0009]
And , in order to make the guide to the holding part smoother, it is desirable that the guide part has an inclined surface with a protruding height that gradually protrudes from the front side in the insertion direction of the sandwiched object toward the back. .
[0010]
In addition, in the writing instrument according to the present invention, it is desirable that the convex portion has a substantially semicircular shape in a side view.
[0011]
In order to facilitate the insertion of the object to be held in the holding part and to hold the object to be held locally, it is desirable that the holding part has a convex shape. Here, the convex shape protrudes in the direction of narrowing the gap between the writing instrument body and the clip body.
[0012]
Further, in order to easily obtain an appropriate frictional force without performing special processing on the surface of the holding portion, it is desirable that the holding portion is made of a soft synthetic resin.
[0013]
Furthermore, in order to simplify the production, it is desirable that the guide portion is made of a hard synthetic resin and formed by two-color molding together with the holding portion.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
The writing instrument according to the present embodiment is a knock-type mechanical pencil capable of feeding a lead by knocking the rear part as shown in FIGS.
[0015]
In the following description, unless otherwise specified, the end of the pen tip is the front end, and the opposite end is the rear end.
[0016]
As shown in FIGS. 1 to 3, the mechanical pencil P <b> 1 includes a writing instrument main body 1, a clip main body 2, a clamping means 3 including the writing instrument main body 1 and the clip main body 2.
[0017]
The writing instrument main body 1 includes a lead feeding mechanism 4, an eraser feeding mechanism 5, and a writing shaft 6 that accommodates the lead feeding mechanism 4 and the eraser feeding mechanism 5 therein.
[0018]
As shown in FIGS. 2 and 3, the lead feeding mechanism 4 includes a back chuck 41, a connector 42, a spring 43, and a lead tank 44 in order from the front end side, and is a known structure that opens and closes the back chuck 41 by a knocking operation and feeds the lead. belongs to.
[0019]
As shown in FIGS. 2 and 3, the eraser feeding mechanism 5 is attached to the rear end of the core tank, and is composed of a rotating sleeve 51, a screw 52, and an eraser 53 in order from the leading end side. It has a known structure for feeding out the eraser by the relative rotation of 52.
[0020]
As shown in FIGS. 1 to 3, the writing shaft 6 has a cylindrical shape in which the central portion in the longitudinal direction is slightly smaller in diameter than the front end portion and the rear end portion, and is held by the user's fingertip during writing. Grip 61, a shaft cylinder 62 provided on the rear end side of the grip 61 and indicating a finger-to-finger portion between the index finger and the thumb of the user, a clip 2 described later, and a convex portion 63 constituting a clamping means. ing.
[0021]
The grip 61 is a hollow having a substantially conical shape with the tip side narrowed down, and a front chuck 611 having a substantially mushroom shape having a through hole 611a into which a lead can be inserted along a longitudinal axial core. The inner surface of the rear end side is provided with a female screw portion 612 that is screwed with a shaft cylinder 62 described later. The grip 61 is formed of a hard synthetic resin (for example, PP, PE, PMMA, etc.) and a soft synthetic resin (for example, an elastomer), and the soft synthetic resin is formed on the entire surface 613 of the grip 61. Is exposed. Further, the surface 613 is provided with a concave portion 614 provided intermittently along the longitudinal direction and the circumferential direction on the rear side of the grip 31 and a circumferential surface provided intermittently in the longitudinal direction on the tip side. A slit portion 615 extending so as to bisect the circumference in the direction is formed. By configuring the grip 61 in this way, it is possible to prevent the user's finger from slipping and to give the user a soft feel around the finger.
[0022]
The shaft cylinder 62 has a cylindrical shape extending in the longitudinal direction, and includes a small-diameter portion 621 on the front end side and a large-diameter portion 622 extending continuously to the small-diameter portion 621 on the rear end side. The small-diameter portion 621 includes an insertion portion 621a inserted into the grip 61 on the front end side and a male screw portion 621b screwed onto the female screw portion 612 of the grip 61 on the rear end side. The large-diameter portion 622 has a hollow cylindrical shape that can accommodate the core feeding mechanism 4 and the eraser feeding mechanism 5 therein, and its surface 622a is composed of a hard portion 624 and a soft portion 625. Specifically, the soft part 625 includes a front-end peripheral part 625a provided along the front-end peripheral part of the large-diameter part 622, a rear-end peripheral part 625b provided along the rear-end peripheral part, the front-end peripheral part 625a, and the rear-end peripheral part. The portion 625b is made of a soft synthetic resin (e.g., an elastomer) in which a part of the portion 625b is continuous along the longitudinal direction and is continuous with a smooth curve. The continuous portion 625c is provided at a position facing the clip body 2 described later. A hard portion 624 made of a hard synthetic resin (for example, PP, PS, PMMA, etc.) is formed at a portion other than the soft portion 625 of the shaft cylinder 62. In particular, at a position on the opposite side of the continuous portion 625c, it is configured as an inter-finger contact portion 624b in which a portion between the user's index finger and thumb is in contact. A hard portion 624a having a substantially egg shape is formed at a portion where the distal end peripheral edge portion 625a and the continuous portion 625c intersect.
[0023]
The convex portion 63 is formed at a position slightly rearward from the longitudinal center of the large diameter portion 622. The guide portion 631 having an inclined surface 631a that serves as a guide surface for the object to be clamped on the front end side, with the approximate apex of the convex portion 63 as a boundary, is made of a hard synthetic resin, and the friction is provided on the rear end side. The holding portion 632 that holds the object to be clamped by force is made of a soft synthetic resin. As a whole, the shape is substantially semicircular when viewed from the side, which is composed of smooth R as a whole.
[0024]
The clip body 2 is provided on the rear end side of the writing instrument body 1 and has a plate shape formed such that the tip gradually becomes narrower in plan view, and the base end portion 21 is integrated with the shaft tube 62. And the tip end side is extended to a position where it overlaps with the projection 63. In addition, a pressing portion 23 that protrudes from the inner surface 22 toward the writing instrument main body is formed on the inner surface 22 of the clip main body 2 at a tip end side of the convex portion 63. Further, the entire clip body 2 is formed of a hard synthetic resin.
[0025]
The holding means 3 is composed of the writing instrument main body 1 and the clip main body 2, specifically, the convex part 63 provided on the surface of the writing instrument main body 1 and the inner surface 625 of the clip main body 2. Yes.
[0026]
In addition, in the writing instrument (the mechanical pencil P1) described above, a portion formed of a hard synthetic resin and a portion formed of a soft synthetic resin are mixed, but these portions are formed by two-color molding. Yes.
[0027]
Next, an operation for inserting an object to be held such as a breast pocket of clothes into a writing instrument will be described. First, the object to be clamped is inserted from the front end side toward the rear end side against the elasticity of the clip body 2. Next, the end of the object to be clamped approaches the clip body 2 along the inclined surface 631a provided on the convex portion 63 and comes into contact with the holding portion 632 when reaching the vicinity of the approximate apex of the convex portion 63. The insertion is further advanced, and the insertion is completed when the tip of the object to be clamped contacts the proximal end portion 21 of the clip body 2. Therefore, in this state, the writing instrument is stably held by the object to be clamped by the clamping force due to the elasticity of the clip body 2 and the frictional force of the holding portion 632.
[0028]
In the present embodiment, a pressing portion 23 is provided at the tip of the clip main body 2, and a soft portion 625 c made of a soft synthetic resin is also provided at the position of the writing instrument main body facing the pressing portion 23. As a result, when holding the object to be clamped, the pressing part 23 presses the pinched part against the soft part 625c by elasticity, and the holding force of the object to be clamped is further increased.
[0029]
As described above, the mechanical pencil P1 of the present embodiment includes the writing instrument main body 1 and the clip main body 2, and the holding means 3 that can hold an object to be clamped such as a breast pocket of clothes is on the front side in the insertion direction of the object to be clamped. A guide portion 631 provided on the (front end side), and a holding portion 632 located near the guide portion 631 and provided on the back side (rear end side) in the insertion direction of the object to be clamped, Since the surface frictional resistance of the holding part 632 is set higher than the surface frictional resistance of the guide part 631, the object to be clamped smoothly along the guide part 631 having a low frictional resistance at the beginning of inserting the object to be clamped. Can be inserted into the insertion region, and when the guide portion 631 is exceeded, the holding portion 632 having high frictional resistance is brought into contact, and the object to be clamped can be stably held. Further, since the holding portion 632 having a high frictional resistance also has the guide portion 631, the object to be held is surely guided to the holding portion 632, and the end of the object to be held is bent and cannot be inserted. In the case of paper, it is possible to prevent wrinkles and damage.
[0030]
In addition, since the holding portion 632 has a convex shape, when the object to be held is guided from the guide portion 631 to the holding portion 632, the object to be held is not excessively subjected to the frictional force of the holding portion. It can be moved. Furthermore, in the present embodiment, the convex shape functions as a protruding end that substantially gives a holding force to the object to be held, so that a sufficient holding force can be obtained for holding the object to be held.
[0031]
In addition, since the guide portion 631 includes an inclined surface 631a that gradually increases in height from the front end side to the rear end side of the object to be clamped, the guide to the holding portion 632 is made smoother. I can do it.
[0032]
In particular, since the guide portion 631 and the holding portion 632 continuously form one convex portion 63 so as to form a substantially semicircular shape when viewed from the side, it is easy to insert the object to be held into the holding portion 632. At the same time, the object to be clamped can be held locally. Furthermore, the structure of the clamping means 3 can be made simple and compact without complicating the structure.
[0033]
Further, since the guide portion 631 and the hard portion 624 are made of a hard synthetic resin and the holding portion 632 and the soft portion 625 are made of a soft synthetic resin, the surface of the holding portion 632 can be appropriately processed without special processing. Can obtain a good frictional force.
[0034]
Furthermore, if it is manufactured by two-color molding, it is possible to manufacture at low cost without reducing the number of parts and increasing the number of molds. Therefore, the mechanical pencil P1 having an unprecedented excellent function for the user is provided. It can be offered at a low price.
[0035]
In addition, the specific structure of each part is not limited to embodiment mentioned above, A various deformation | transformation is possible in the range which does not deviate from the meaning of this invention.
[0036]
For example, although the mechanical pencil P1 has been described in the above embodiment, the present invention is not limited to this, and the present invention can be applied to the ballpoint pen P2 as shown in FIGS. The ball-point pen P2 will be briefly described. The ball-point pen P2 includes a known knock mechanism 8 that allows the pen tip 9 to be taken in and out by operating a knock portion 7 provided at the rear end. Since other parts are the same as those of the mechanical pencil P1, description thereof is omitted.
[0037]
In addition, the clip body 2 is configured as a separate member with respect to the writing instrument body 1, and the writing instrument body 1 is a concept that includes a cap (not shown).
[0038]
Furthermore, although the guide part 631 and the holding | maintenance part 632 demonstrated the example provided in the writing instrument main body 1 side, of course, you may provide in the clip main body 2 side, either one is provided in the clip main body 2 side, and the other May be provided on the writing instrument body 1 side.
[0039]
【The invention's effect】
Since the present invention has the configuration described above, it is possible to smoothly insert a sandwiched object such as a piece of paper or a pocket of clothes into the insertion region, and to stably hold the sandwiched object after insertion. Therefore, it is possible to provide a writing instrument having an excellent function that is not easily found in a conventional clip, which is easy to insert and difficult to remove.
[Brief description of the drawings]
FIG. 1 is a side view of a writing instrument according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the writing instrument in the embodiment.
FIG. 3 is a longitudinal sectional view of the writing instrument in the embodiment.
FIG. 4 is a cross-sectional view of the writing instrument in the embodiment.
FIG. 5 is a side view of a writing instrument according to another embodiment of the present invention.
FIG. 6 is an exploded perspective view of the writing instrument in the embodiment.
[Explanation of symbols]
P1 ... mechanical pencil (writing instrument)
DESCRIPTION OF SYMBOLS 1 ... Writing instrument main body 2 ... Clip main body 3 ... Holding means 631 ... Guide part 632 ... Holding part

Claims (7)

In a writing instrument comprising a writing instrument main body, a clip main body provided on the writing instrument main body, and a clamping means constituted by the writing instrument main body and the clip main body and capable of clamping an object to be clamped such as a breast pocket of clothes,
The clamping means is provided in the vicinity of the guide portion having an inclined surface which is provided on the near side of the sandwiched object in the insertion direction and gradually increases in height from the near side of the sandwiched object in the insertion direction. And a holding part provided on the back side in the insertion direction of the object to be clamped ,
The guide portion and the holding portion continuously form one convex portion, and the guide portion and the holding portion are formed at the apex of the convex portion, respectively , and surface friction of the holding portion A writing instrument, wherein the resistance is higher than the surface frictional resistance of the guide portion. The writing instrument according to claim 1, wherein the guide portion includes an inclined surface that gradually increases in height from the front side in the insertion direction of the object to be clamped . The writing instrument according to claim 2, wherein the convex portion has a substantially semicircular shape in a side view. The writing instrument according to claim 1, wherein the holding portion is made of a soft synthetic resin . The writing instrument according to claim 4, wherein the guide part is made of a hard synthetic resin and is formed by two-color molding together with the holding part . In the writing instrument clip provided with a clip body and an attachment portion attached to the writing instrument body, it is possible to constitute a holding means that can hold an object to be held such as a chest pocket of clothes together with the writing instrument body.
The clip body includes a guide portion provided on the near side in the insertion direction of the object to be clamped, and a holding portion located near the guide portion and provided on the back side in the insertion direction of the object to be clamped,
The guide portion and the holding portion continuously form one convex portion, and the guide portion and the holding portion are formed at the apex of the convex portion, respectively, and surface friction of the holding portion A clip for a writing instrument, wherein the resistance is higher than the surface frictional resistance of the guide portion. The clip for a writing instrument according to claim 6, wherein the guide portion includes an inclined surface that gradually increases in height from the front side in the insertion direction of the object to be clamped .

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