JP7623133B2 - Clipping device for writing implement - Google Patents

Description

The present invention relates to a clip device for a writing instrument that allows the clip to be pulled out and retracted from the barrel.

There is known a clip for a writing instrument that can be retracted into the barrel when the writing instrument is in use so as not to interfere with the use of the writing instrument, or that can be protruded from the barrel and hung in a clothing pocket or the like. Specifically, for example, there is known a technology in which a clip is provided with a base portion that is movably introduced into the rear barrel in the radial direction of the rear barrel so that it can protrude and retract, and a bent plate-shaped spring that applies a spring force to the clip in the retracting direction, and the clip is protruded by a cam action or retracted by the spring force (see, for example, Patent Document 1).

Publication No. 5-3356

However, in the above configuration where the clip is retracted and extended using a bent plate-shaped spring or cam, space is required to install the spring or cam, which tends to make the overall length of the writing instrument longer and thicker.

The present invention was made in consideration of the above points, and aims to make it possible to retract and pull out clips with a simple configuration.

In order to achieve the above objectives,
The present invention relates to
A clip device for a writing instrument, comprising:
A shaft cylinder,
a clip having an outer clip member disposed on an outer periphery side of the barrel, an inner clip member disposed on an inner periphery side of the barrel, and an outer-inner member connecting portion connecting the outer clip member and the inner clip member;
a lump-shaped elastic member provided between an inner peripheral portion of the shaft cylinder and the clip inner member;
The present invention is characterized by comprising:

As a result, the clip is retracted by the biasing force of an elastic body such as a lump, making it possible to retract and pull out the clip with a simple configuration.

The present invention makes it easy to retract and pull out clips with a simple configuration.

FIG. 2 is a partially cutaway exploded perspective view showing the configuration of the writing instrument near the head side. FIG. 4 is a vertical cross-sectional side view showing a retracted state of the clip. FIG. 4 is a vertical cross-sectional side view showing a protruding body of the clip. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 3 is a cross-sectional view taken along line VV in FIG. 2. 6 is a cross-sectional view taken along line VI-VI in FIG. 2.

The following describes in detail an embodiment of the present invention with reference to the drawings.

As shown in Figs. 1 to 6, the writing instrument 100 includes a barrel 110, a clip 120, an elastic member 130, and a crown 140. The writing instrument 100 also includes a writing body and other components housed inside the barrel 110, but for the sake of simplicity, a description of these components will be omitted.

The barrel 110 has a rectangular cylinder-shaped barrel extension 112, and a notch 113 into which the clip 120 fits is formed on the writing implement head side of the barrel extension 112. A clip protrusion receiving hole 114 into which the protrusion 126 of the clip 120 described below fits is also formed at a predetermined position of the barrel extension 112. The barrel top 115 into which the crown 140 fits is provided at the top of the barrel 110 on the head side. The barrel top 115 has a cross-sectional shape in which part of the circumference has been removed, and the upper end surface of the removed part extends toward the writing implement tip side of the barrel body 111 to form a clip receiving step 116.

The clip 120 has a clip outer member 121 arranged on the outer periphery side of the shaft tube 110, a clip inner member 122 arranged on the inner periphery side, and an outer-inner member connecting portion 123 that connects the clip outer member 121 and the clip inner member 122. The clip inner member 122 is specifically composed of a pair of rod-shaped members 122a along the edge positions on both sides of the width direction of the clip. One end side of each rod-shaped member 122a is connected to the outer-inner member connecting portion 123, and the other ends are connected to each other by the inner member connecting portion 124 (Figures 4 and 5). In addition, the clip outer member 121 or the outer-inner member connecting portion 123 has a recess 125 formed therein whose width dimension is set smaller from the clip outer member 121 toward the clip inner member 122 side (Figure 6). Furthermore, a convex portion 126 is formed on the inner surface of the clip outer member 121 near the tip, and the clip convex portion receiving hole 114 is formed on the surface of the barrel 110 at a position corresponding to the convex portion 126, making it easier to fix the writing instrument 100 when it is clamped in a clothing pocket or the like. Note that a concave portion may be formed instead of the clip convex portion receiving hole 114 as described above, and the clip convex portion receiving hole 114 of the barrel 110 and the convex portion 126 of the clip 120 do not necessarily have to be provided.

The clip 120 is inserted from the head side of the barrel 110, and with the outer and inner member connecting portion 123 fitted into the notch 113 of the barrel 110, a crown 140 (clip fixing member) is fitted to the barrel top 115 (Fig. 2). This prevents the clip 120 from slipping out of the head side of the barrel 110 while the clip outer member 121 can move between a state in which it is in close contact with the barrel 110 and a state in which it is separated and pulled out (Figs. 2 and 3).

A lump-shaped elastic member 130 is provided between the inner periphery of the shaft tube 110 and the clip inner member 122 of the clip 120, so that the clip 120 is biased in the direction in which the clip outer member 121 adheres to the shaft tube 110 (FIG. 5). The lump-shaped elastic member 130 is an elastic member formed using an elastic body that generates a biasing force by compressive strain caused by compressive stress, that is, a member that can expand and contract without structural deformation such as twisting or bending, such as a coil spring or a leaf spring. Such members are typically considered to be made of solid materials, but also include materials that are considered to be solid as a whole even if they contain fine bubbles, for example. The external shape of the elastic member 130 may be a rectangular parallelepiped, a sheet, a long and thin wire corresponding to the shape of the rod-shaped member 122a, or a deformable member such as a collection of spheres or a gel. More specifically, examples of the elastic member 130 described above include sponge-like members made of urethane, EPDM (ethylene propylene diene rubber), and silicone, while rubber sheets include those made of urethane, silicone, NBR (nitrile rubber), and fluororubber. Other examples include sheets and felt made of elastomers.

As described above, the clip 120 can be moved between a retracted state and a pulled-out state relative to the barrel 110, so that it does not get in the way when writing or storing, and can be pulled out to function as a clip when needed, such as when clipping it into a clothing pocket. Moreover, by generating the force that retracts the clip 120 using the lump-shaped elastic member 130 as described above, the clip can be easily retracted with a simple, compact configuration and pulled out when needed, and the length and thickness of the writing instrument 100 can be easily reduced. Moreover, the elastic member 130 as described above can be easily assembled, since it is only necessary to sandwich it between the barrel 110 and the clip inner member 122 of the clip 120.

(Other matters)
In the above example, the clip inner member 122 is composed of a pair of rod-shaped members 122a, which makes it easy to secure the internal space (inner diameter) of the shaft tube 110 and keep the outer diameter small, but this is not limited to this, and the clip inner member 122 may be formed into a plate-like shape as long as it is possible to secure the internal space, etc.

The elastic member 130 can also be made more compact by making it elongated to correspond to the rod-shaped member 122a. The thickness of the widthwise center of the elastic member 130 can also be made relatively thinner than the sides.

In addition, when the clip inner member 122 is composed of a pair of rod-shaped members 122a as described above, strength and rigidity can be easily ensured by connecting the ends of the rod-shaped members 122a with the inner member connecting portion 124, but if sufficient strength and rigidity can be obtained, the inner member connecting portion 124 does not necessarily have to be provided.

As described above, by forming recesses 125 in the outer and inner member connecting portion 123, etc., it is relatively easy to pinch or clamp the clip 120 with fingertips or nails and pull it out, but it is not limited to this. It is also possible to make it easier to pinch the clip 120 by forming a chamfer on the edge of the clip outer member 121 on the shaft tube 110 side, providing widthwise protrusions on the sides of the clip outer member 121 or the outer and inner member connecting portion 123, or providing a recess on the side of the shaft tube extension portion 112.

In addition, when the clip 120 is inserted from the head side of the barrel 110, in order to prevent it from slipping out, a locking portion that prevents the clip from slipping out, such as a convex portion and a concave portion, may be provided at the contact point between the clip 120 and the barrel 110 in place of or in addition to the crown 140.

In addition, the crown 140 does not necessarily have to be fitted to the barrel top 115, but may be screwed onto it, for example.

REFERENCE SIGNS LIST 100 Writing implement 110 Barrel 111 Barrel body 112 Barrel projection 113 Notch 114 Clip protrusion receiving hole 115 Barrel top 116 Clip receiving step 120 Clip 121 Clip outer member 122 Clip inner member 122a Rod-shaped member 123 Outer/inner member connecting portion 124 Inner member connecting portion 125 Recess 126 Protrusion 130 Elastic member 140 Crown

Claims (7)

A clip device for a writing instrument, comprising:
A shaft cylinder,
a clip having an outer clip member disposed on an outer periphery side of the barrel, an inner clip member disposed on an inner periphery side of the barrel, and an outer-inner member connecting portion connecting the outer clip member and the inner clip member;
a lump-shaped elastic member provided between the inner peripheral portion of the shaft tube and the clip inner member between the clip outer member and the clip inner member , the lump-shaped elastic member biasing the clip outer member in a direction in which the clip outer member comes into close contact with the shaft tube ;
Equipped with
A clip device for a writing instrument, characterized in that the clip outer member of the clip is formed into a shape having a plate-shaped portion, and the clip is arranged so that the plate-shaped portion of the clip outer member can be moved between a state in which it is in close contact with the outer periphery of the barrel and a state in which it is spaced apart. 2. A clip device for a writing implement according to claim 1,
The clip inner member has one end connected to the outer/inner member connecting portion and has a pair of rod-shaped members along the edge positions on both sides of the width direction of the clip, and an inner member connecting portion formed in a curved shape corresponding to the inner peripheral portion of the barrel and connecting the other ends of the pair of rod-shaped members, characterized in that a space inside the barrel is formed between the pair of rod-shaped members. A clip device for a writing implement according to any one of claims 1 to 2,
A clip device for a writing implement, wherein the outer clip member or the connecting portion of the outer and inner clip members has a portion whose widthwise dimension is set to be smaller from the outer clip member toward the inner clip member. A clip device for a writing implement according to any one of claims 1 to 3,
A clip device for a writing implement, characterized in that the clip is configured so that it can be inserted into the barrel from the head side of the barrel. A clip device for a writing implement according to claim 4,
The clip device for a writing implement further comprises a clip fixing member provided on the barrel closer to the head than the clip is, for preventing the clip from slipping out. A clip device for a writing implement according to claim 4,
A clip device for a writing implement, characterized in that a locking portion for preventing the clip from slipping out is provided at the contact portion between the clip and the barrel. A clip device for a writing implement according to any one of claims 1 to 6,
A clip device for a writing instrument, characterized in that a convex portion is formed on the inner surface side near the tip of the clip outer member, and a concave portion or hole is formed at a position corresponding to the convex portion on the surface side of the barrel.

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