JP2006289726A - Clip fitting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To fit a clip on a barrel by a slide-over fitting fashion without requiring a separate component such as a leaf spring or a pin. <P>SOLUTION: A recessed part 3a and a projecting part 3b are formed on each of the opposing surfaces of a barrel 1 and a clip 2, and the recessed part 3a and the projecting part 3b are fitted into each other in a slide-over fitting manner. Thus the clip 2 is connected with the barrel 1 and consequently, a supporting structure consisting of only the recessed part 3a and the projecting part 3b is achieved. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a clip attachment device for attaching a clip to a surface of a cylinder such as a cap of a writing instrument or a shaft cylinder.
Specifically, the present invention relates to a clip attachment device in which a clip is connected to a cylinder of a writing instrument so as to be rotatable around a fulcrum or the like.

Conventionally, as this type of clip attachment device, an insertion is formed in which one end side of a substantially U-shaped pinching spring made of a leaf spring or the like is formed on the top side of a cylindrical body such as a cap or a shaft cylinder. The other end of the pinching spring is fixed along the surface of the cylinder, and the clip is pivotally supported on the pivot formed on the opposite surface of the clip and the cylinder. The clip is attached to the cylinder so that the other end of the clip spring is hooked to the front end side of the clip and the front end of the clip is in elastic contact with the surface of the cylinder (see, for example, Patent Document 1). ).
Also, a hole for attaching the fulcrum rotation shaft of the clip (coating stopper) is drilled in the main body or cap of the writing instrument, etc., and the hole of the fulcrum rotation shaft of the clip is aligned and connected with the rotation shaft, and the back side of these clips A leaf spring bent in a generally U shape is provided between the body and the cap, and the leaf spring is compressed and deformed to open the clip by pressing the pressing portion arranged on the top side of the clip. (See, for example, Patent Document 2).

However, according to such a conventional clip mounting apparatus, in the case of Patent Document 1, the cylindrical body and the clip are rotatably connected by a separate part leaf spring or the like, so that the number of parts is equal to the amount of the pinching spring. There was a problem of increasing costs.
Further, in the case of Patent Document 2, since the main body such as a writing instrument or a cap and a clip are rotatably connected by a separate rotating shaft, the number of components increases by the amount of the rotating shaft, resulting in an increase in cost. there were.
Furthermore, since it is necessary to insert the rotary shaft after the clip is accurately positioned at a predetermined position on the main body or cap of the writing instrument, etc., and then to prevent the rotary shaft from being detached, the number of assembly work steps is large. There was also a problem that it took time and effort.
Japanese Patent No. 3175933 (page 1-3, FIG. 1-6) JP 2000-79792 A (page 1-2, FIG. 1-8)

  The present invention has been made in view of the above-described conventional circumstances, and an object of the present invention is to provide a clip attachment device that can be easily assembled by overcoming fitting without requiring separate parts such as a leaf spring and a pin. There is.

In order to solve the above-mentioned problem, in the first invention, in the clip attachment device for connecting the clip to the cylinder of the writing instrument, a concave portion and a convex portion are provided on the opposing surfaces of the cylindrical body and the clip, respectively. The clip is connected to the cylindrical body by fitting by fitting by overcoming.
Here, the cylinder of the writing instrument is a cap, a shaft cylinder, or the like.
In the second invention, in addition to the configuration of the first invention, a pair of at least one of a concave portion and a convex portion is provided on the cylindrical body or clip, and an inclined guide is continuously formed on the other side. The positional relationship is such that by sliding one side along the inclined guide, the pair of spaces is elastically expanded to the interval necessary for fitting with the other.
Further, in the third invention, in addition to the configuration of the first or second invention, the clip is rotatably connected to the cylindrical body by fitting the concave portion and the convex portion. Further, it is characterized in that it has a polygonal cross-section in which flat portions that are in surface contact with the concave portion are formed, and only a predetermined angle region corresponding to the opening / closing movement of the clip piece portion is brought into curved contact.

The present invention has the following effects by the above configuration.
According to the first invention, the concave portion and the convex portion are respectively provided on the opposing surfaces of the cylindrical body and the clip, and the concave portion and the convex portion are overcome and fitted by fitting so that the clip is connected to the cylindrical body. The support structure is completed with only the convex portions.
Therefore, it is possible to easily assemble by overcoming fitting without requiring separate parts such as a leaf spring and a pin.
Therefore, the number of parts can be reduced and the assembling work can be completed in a short time as compared with the prior art in which the clip is connected with another part, and the manufacturing cost can be reduced.

According to the second invention, the cylindrical body or the clip is provided with a pair of at least one of the concave portion and the convex portion, and the other is formed with an inclined guide continuously therewith, and one is slid along the inclined guide. Since the positional relationship is such that the pair of intervals are elastically expanded to the interval necessary for fitting with the other, the concave portion and the convex portion are smoothly connected only by the sliding operation along the inclined guide.
Therefore, assembly work can be facilitated.
Therefore, the rotating shaft is inserted after the clip is accurately positioned on the main body or cap of the writing instrument, etc., and the assembly work is completed in a shorter time than the conventional technology that requires the rotating shaft to be secured. Suitable for production.

According to the third aspect of the present invention, the clip is rotatably connected to the cylindrical body by fitting the concave portion and the convex portion, and the convex polygon is a cross-sectional polygon formed with a flat portion in surface contact with the concave portion. Since the curved surface is brought into contact with only a predetermined angle region corresponding to the opening / closing movement of the sandwiching piece portion, the cross-sectional area of the convex portion is increased as compared with a pin having a circular cross section.
Therefore, the strength of the fulcrum can be increased.
Furthermore, the stability when the clip is closed by the contact of the flat portion is improved, and the play can be reduced.

  As shown in FIGS. 1 to 3, the clip attachment device of the present invention is provided with a concave portion 3 a and a convex portion 3 b constituting the fulcrum 3 on the opposing surfaces of the tube 1 and the clip 2 such as a cap and a shaft cylinder of the writing instrument A, respectively. The clip 2 is rotatably connected to the cylinder 1 by providing the cylinder 1 and the clip 2 close to each other and fitting the respective recesses 3a and projections 3b by, for example, over-fitting. An elastic material 4 is provided between the cylindrical body 1 and the clip 2, and the clip piece 2 a extending in the axial direction of the clip 2 is supported so as to be freely opened and closed.

  In the clip attachment device of the present invention, although not shown, the inner end portion of the clip 2 made of a material that can be elastically deformed by fitting the concave portion 3a and the convex portion 3b, for example, by fitting over the concave portion 3a and the convex portion 3b. Further, another structure is also included which is connected to be non-rotatable and is supported to be opened and closed using the elastic deformation of the clip 2.

  The cylindrical body 1 such as the cap or the shaft cylinder is mainly formed of a synthetic resin or the like in a cylindrical shape or a rectangular cylindrical shape, and in the case of the illustrated example, a support base 5 that protrudes radially outward is integrally formed on the outer peripheral surface 1a. It is formed or provided integrally, and either one of the concave portion 3a or the convex portion 3b of the fulcrum 3 is formed integrally or provided integrally with the support base 5, so that the fulcrum 3 is provided outside the cylindrical body 1. Is arranged.

  The clip 2 is formed of an elastically deformable synthetic resin, metal, or the like, and a clip piece 2a extending in the longitudinal direction is disposed along the outer peripheral surface 1a of the cylindrical body 1 and faces the outer peripheral surface 1a. The other of the concave portion 3a or the convex portion 3b of the fulcrum 3 is integrally formed or integrally provided on the inner surface side of the sandwiching piece portion 2a.

  The concave portion 3a and the convex portion 3b are formed so as to be fitted to each other, and at least one of the concave portion 3a and the convex portion 3b is paired so as to be appropriately spaced in a direction perpendicular to the axial direction of the cylindrical body 1. An inclined guide 6 is formed on the other side continuously with the inclined guide 6, and one of the pair of the concave portions 3 a or the convex portions 3 b is slid along the inclined guide 6, so that the pair of the concave portions 3 a is disposed. Alternatively, the positional relationship is such that one interval of the convex portion 3b is elastically widened to an interval necessary for fitting with the other.

Further, the convex portion 3b has a flat portion 3c having a flat portion 3c in surface contact with the concave portion 3a. The convex portion 3b is formed in a polygonal shape such as a substantially square, and is a sectional circle such as a pin known as a component of the fulcrum By increasing the cross-sectional area as compared with the shape, the fulcrum 3 is increased in strength, and the curved surface portion 3d having a small curvature is limited only to a predetermined angle region that rotates in accordance with the opening and closing movement of the sandwiching piece portion 2a of the convex portion 3b. The clip 2 rotates smoothly as the clip 2 opens and closes.
In the illustrated example, one of the corner portions arranged on the top end side of the convex portion 3b formed in a substantially square shape is a curved surface portion 3d having a small curvature.
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  In the first embodiment, as shown in FIGS. 1A and 1B and FIG. 3, the cylindrical body 1 is a cap, and a fulcrum 3 is mounted on a support base 5 projecting from an outer peripheral surface 1 a of the cap 1. By forming the concave portion 3a and the inclined guide 6 integrally, and forming a pair of convex portions 3b on the inner surface of the sandwiching piece portion 2a of the substantially L-shaped clip 2 so as to face the concave portion 3a and the inclined guide 6 respectively. The fulcrum 3 is arranged outside the cylindrical body 1 and in the middle of the pinch piece 2a in the axial direction, and the outer surface of the pinch piece 2a located on the apex side of the fulcrum 3 is made of an elastic coil spring. A case where the radial pressing portion P1 is opposite to the elastic direction of the material 4 and the outer surface of the top piece 2b extending in the radial direction of the clip 2 is an axial pressing portion P2 opposite to the elastic direction of the elastic material 4. It is shown.

The cap 1 has an open top end surface 1b, and a cutout portion 1d into which the top piece 2b of the clip 2 enters is formed at the mouth edge of the top end opening 1c as shown in FIG. To do.
As shown in FIGS. 3A and 3B, a locking portion 1e that engages with the end portion of the coil spring that is the elastic material 4 is provided on the inner surface of the top end opening 1c. The coil spring 4 is elastically mounted over the inner surface of the top piece 2b of the clip 2, and the clip 2 is closed by the elastic force of the coil spring 4 so as to be integrally formed on the inner surface at the front end side of the clip piece 2a. The ball part 2e is brought close to or in contact with the outer peripheral surface 1a of the cap 1.

In the case of the illustrated example, as the locking portion 1e, a plurality of ribs 1e are projected on the inner peripheral surface of the top end opening 1c at appropriate intervals in the circumferential direction, and a space formed between the ribs 1e is used. A ventilation path 7 is formed which is always in communication toward the end opening 1f.
The engaging portion 1e may have a structure other than a rib as long as it engages with the end portion of the coil spring 4. Further, if necessary, the engaging portion 1e may have a structure shown in FIG. It is also possible to provide a sealing material 1g that engages with the pen tip P as indicated by a two-dot chain line in FIG.

An anti-slip portion 2c is formed on the surface of the radial pressing portion P1 disposed on the outer surface of the clip piece portion 2a of the clip 2, so that the finger pressing the radial pressing portion P1 does not slip. preferable.
As shown in FIGS. 1 and 2, the anti-slip portion 2c may be formed with a protrusion adjacent to the top end side of the radial direction pressing portion P1, or may be replaced with or added to the protrusion. It is also possible to form irregularities (not shown) such as concave grooves on the surface of the direction pressing portion P1, or to integrally provide rubber, elastomer resin, or the like.

Further, by forming a through hole 2d in the sandwiching piece portion 2a at a position facing the support base 5 projecting from the cap 1, the clip piece 2a contacts the outer end portion of the support base 5 when the clip 2 is closed. In addition, the pinching piece 2a is easily elastically deformed when the concave portion 3a and the convex portion 3b of the fulcrum 3 are fitted to each other.
The through-hole 2d is also necessary for removing the molding shape when the clip 2 is integrally formed with synthetic resin. If the clip 2 can be formed without a hole, the through-hole 2d is supported by forming a recess instead of the through-hole 2d. While preventing it from coming into contact with the outer end portion of the pedestal 5, the pinching piece 2 a may be easily elastically deformed when the concave portion 3 a and the convex portion 3 b of the fulcrum 3 are fitted.

  The support 5 is projected in a substantially T-shaped cross section along an upright surface portion 5a that extends linearly in the axial direction of the cap 1 and an outer front end (upper front end in FIGS. 1 and 3) of the upright surface portion 5a. The recessed portion 3a of the fulcrum 3 and the inclined guide 6 are formed on the standing surface portion 5a.

Specifically, the concave portion 3a of the fulcrum 3 and the inclined guide 6 are sequentially disposed on both surfaces of the upright surface portion 5a that are arranged back to back in the direction orthogonal to the axial direction from the top end surface 1b side of the cap 1 toward the end opening 1f side. A pair is arranged.
For the reason of forming the clip 2, a pair of these recesses 3a are provided back to back, but it is also possible to integrate both by penetrating them.

  The inclined guide 6 is inclined at least on the standing surface portion 5a so as to gradually expand from the top end surface 1b side of the cap 1 toward the end opening 1f side, and along the inclined surface 6a, a pair of the clip 2 By sliding the tip of the convex portion 3b, the clip piece 2a of the clip 2 is guided toward the concave portion 3a while being elastically deformed so that the interval between the convex portions 3b gradually increases.

  Further, as the inclined guide 6, the outer peripheral surface 1a of the cap 1 and the inner surface of the stopper portion 5b facing each other are inclined so as to gradually become narrower from the top end surface 1b side of the cap 1 toward the end opening 1f side, The convex portion 3b is guided toward the concave portion 3a along the inclined guide surfaces 6b and 6c.

  Further, the tip surfaces of both convex portions 3b facing the inclined surface 6a of the inclined guide 6 are partially or entirely inclined to be substantially parallel to the inclined surface 6a, thereby aligning with the inclined surface 6a. It makes work easier.

Next, the effect of such a clip attachment apparatus is demonstrated.
First, when assembling the clip mounting device, as shown in FIGS. 1 and 2A, a pair of convex portions 3b protruding from the inner surface of the clip piece portion 2a of the clip 2 are formed on the outer peripheral surface 1a of the cap 1. If the sliding operation is performed in the axial direction from the top end surface 1b side toward the end opening 1f side along the inclined guide 6 of the projecting support base 5, the interval between the convex portions 3b is gradually increased by the inclined surface 6a of the inclined guide 6. At the same time, it is guided by the inclined guide surfaces 6b and 6c and smoothly enters and fits into the recess 3a.
Thereby, the clip 2 is rotatably connected around these convex portions 3b.

In such an assembled state, as shown in FIG. 3B, the radial pressing portion P1 arranged on the top end side with respect to the convex portion 3b is pressed in the radial direction toward the cap 1 with a finger or the like. Alternatively, if the axial direction pressing portion P2 disposed on the outer surface of the top piece portion 2b is pressed toward the cap 1 with a finger or the like in the axial direction, the coil spring of the elastic material 4 is compressed and deformed, and at the same time, the convex portion 3b. The curved surface portion 3d rotates along the inner peripheral surface of the concave portion 3a, whereby the sandwiching piece portion 2a is opened.
As a result, there is an advantage that the clip 2 can be opened even if it is pushed from either the radial direction or the axial direction (two directions).

  Further, the cap 1 has a top end opening 1c due to a gap formed between the top end face 1b and the top piece 2b of the clip 2 and a space between ribs 1e protruding at appropriate intervals in the circumferential direction. Since the air passage 7 that always communicates from the first to the end opening 1f is formed to form a penetrating structure, there is an advantage that accidents such as suffocation are unlikely to occur even if a child such as an infant or an infant swallows it.

  In addition, according to Example 1 of the said clip attachment apparatus, although the case where the said cylinder 1 was a cap made from a synthetic resin which opened the top end surface 1b was shown, it is not limited to this, A clip is attached to the axial cylinder 8. 2 is attached, the clip 2 is rotatably connected to the outer peripheral surface of the shaft tube 8 in the same manner as in the first embodiment, or it is made of a material that can be elastically deformed by fitting the concave portion 3a and the convex portion 3b. The inner end portion of the clip 2 may be connected to the cylindrical body 1 so as not to rotate, and may be supported so as to be opened and closed using elastic deformation of the clip 2.

  Further, the concave portion 3a and the inclined guide 6 are formed on the support base 5 and a pair of convex portions 3b are integrally formed on the inner surface of the sandwiching piece portion 2a of the clip 2. However, the present invention is not limited to this. 5 may be provided, and a pair of concave portions 3a and an inclined guide 6 may be provided on the inner surface of the sandwiching piece portion 2a, as long as the concave portions 3a and the convex portions 3b can be rotatably connected to each other. .

  Further, the fulcrum 3 is disposed outside the cylindrical body 1 and in the midway position in the axial direction of the pinching piece 2a of the substantially L-shaped clip 2, and the outer surface of the pinching piece 2a located on the apex side of the fulcrum 3 is The radial pressing portion P1 opposite to the elastic direction of the elastic material 4 and the outer surface of the top piece 2b are set to the axial pressing portion P2 opposite to the elastic direction of the elastic material 4, but not limited thereto, A clip 2 having a shape other than a substantially L-shape may be attached, or the fulcrum 3 may be disposed at a place other than the outside of the cylinder 1.

  Furthermore, although a coil spring is interposed as the elastic member 4 between the top end opening 1c of the cap 1 and the top piece 2b of the clip 2, this is not limited, and a coil spring (not shown) is used instead. A plate spring, a coil spring, rubber, or the like may be interposed, and a coil spring, a leaf spring, rubber, or the like may be interposed between the outer peripheral surface 1a of the cap 1 and the inner surface of the clip piece 2a of the clip 2. Even in this case, the same effects as those of the first embodiment can be obtained.

1 is an exploded perspective view showing an embodiment of a clip attachment device of the present invention, with a main portion partially cut away. It is the same front view, (a) shows the state before clip attachment, (b) has shown the state after clip attachment. It is the longitudinal cross-sectional front view, (a) shows the closed movement state of a clip, and the fulcrum part is sectioned along the (IIIA)-(IIIA) line | wire of FIG.2 (b). (B) shows the open state of the clip, and the fulcrum portion is sectioned along the (IIIB)-(IIIB) line in FIG. 2 (b). It is a disassembled perspective view which cuts and shows the principal part.

Explanation of symbols

A Writing instrument 1 Tube (cap)
2 clip 3 fulcrum 3a concave part 3b convex part 3c flat part 4 elastic material 6 inclined guide

Claims (3)

In the clip attachment device for connecting the clip (2) to the cylinder (1) of the writing instrument (A),
By providing a concave portion (3a) and a convex portion (3b) on the opposed surfaces of the cylindrical body (1) and the clip (2), respectively, and by fitting the concave portion (3a) and the convex portion (3b) by fitting, A clip attachment device characterized in that a clip (2) is connected to a cylindrical body (1). A pair of at least one of the concave portion (3a) and the convex portion (3b) is provided on the cylindrical body (1) or the clip (2), and an inclined guide (6) is formed on the other side of the cylindrical body (1) or the clip (2). (6) By sliding one of the concave part (3a) or the convex part (3b) along (6), the positional relationship is such that the pair of gaps is elastically expanded to the gap necessary for fitting with the other. The clip mounting apparatus according to claim 2. By fitting the concave portion (3a) and the convex portion (3b), the clip (2) is rotatably connected to the cylindrical body (1), and the convex portion (3b) is mutually connected to the concave portion (3a). 3. A cross-sectional polygonal shape in which a flat portion (3c) in surface contact is formed, and only a predetermined angle region corresponding to the opening and closing movement of the clip piece (2a) is brought into contact with a curved surface. Clip mounting device.

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