Clipping device for writing implement
The writing instrument clip device addresses the issue of space constraint by using an offset biasing member, allowing for efficient clip operation while maintaining a larger internal space, thus reducing the instrument's length and thickness.
Patent Information
- Application Number
- JP2021076395
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-04-28
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2041-04-28
AI Technical Summary
Existing writing instrument clip configurations that use bent plate-like springs and cams require additional space, leading to increased length or thickness of the writing instrument, which compromises the internal space.
A writing instrument clip device with a biasing member offset from the shaft center, allowing the clip to be pulled in and out while maintaining a larger internal space, as the biasing member does not constrain the diameter of the internal space.
This configuration allows for easy securing of the internal space within the writing instrument while enabling the clip to be efficiently retracted and protruded, reducing the overall length and thickness of the instrument.
Smart Images
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Abstract
Description
[Technical field]
[0001] The present invention relates to a clip device for a writing implement that is capable of pulling out and retracting a clip relative to a barrel. [Background technology]
[0002] There is known a clip for a writing instrument that is 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 protrudes from the barrel and can be hung in a clothing pocket, etc. Specifically, for example, a technology is known 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 as to be retractable, and a bent plate-like spring that imparts 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). [Prior art documents] [Patent documents]
[0003] [Patent Document 1] Publication No. 5-3356 Summary of the Invention [Problem to be solved by the invention]
[0004] However, in the above-described configuration in which the clip is retracted and protruded by a bent plate-like spring or cam, space is required for the spring or cam, which tends to make the overall length and thickness of the writing instrument longer.
[0005] The present invention has been made in consideration of the above-mentioned points, and has an object to make it possible to easily ensure internal space in a writing instrument. [Means for solving the problem]
[0006] 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 a clip outer member disposed on an outer peripheral side of the barrel; a biasing member that applies a biasing force to the clip in a direction toward an axis of the barrel, The biasing member is characterized in that it is disposed at a position offset with respect to a plane including the axis of the barrel.
[0007] This makes it possible to prevent the diameter of the internal space, for example of a circular cross section, in the writing instrument from being restricted by the biasing member, so that the internal space of the writing instrument can be easily secured while allowing the clip to be retracted and pulled out. Effect of the Invention
[0008] According to the present invention, the internal space of the writing implement can be easily secured. [Brief description of the drawings]
[0009] [Figure 1] FIG. 2 is an exploded perspective view, partially in section, showing the configuration of the head side and its vicinity of the writing instrument of the first embodiment. [Diagram 2] 1 is a vertical cross-sectional side view showing a retracted state of the clip of embodiment 1. FIG. [Diagram 3] 1 is a vertical cross-sectional side view showing a protruding state of the clip of embodiment 1. FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. [Diagram 5] 3 is a cross-sectional view taken along line VV in FIG. 2. [Figure 6] 6 is a cross-sectional view taken along line VI-VI in FIG. 2. [Figure 7] FIG. 11 is an exploded perspective view, partially in section, showing the configuration of the vicinity of the head side of a writing instrument of a second embodiment. [Figure 8] FIG. 11 is a perspective view showing the overall shape of a clip according to a second embodiment. [Figure 9] FIG. 11 is a vertical cross-sectional side view showing a retracted state of the clip of the second embodiment. [Figure 10] 11 is a vertical cross-sectional side view showing a protruding state of the clip of embodiment 2. FIG. [Figure 11] 10 is a cross-sectional view taken along line XI-XI of FIG. 9. [Figure 12] 10 is a cross-sectional view taken along line XII-XII in FIG. 9. [Figure 13] 10 is a cross-sectional view taken along line XIII-XIII in FIG. 9. [Figure 14] FIG. 11 is a perspective view showing the overall shape of a clip of embodiment 3. [Figure 15] FIG. 11 is a perspective view showing the overall shape of a clip according to a fourth embodiment. [Figure 16] FIG. 13 is a vertical cross-sectional side view showing a retracted state of the clip of embodiment 5. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0010] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In each of the following embodiments, components having the same functions as those in other embodiments will be denoted by the same reference numerals and will not be described.
[0011] (Embodiment 1) 1 to 6, an example of the structure of the head side (opposite the tip of the writing instrument) of writing instrument 100 is shown, and includes barrel 110, clip 120, elastic member 130, and crown 140. Writing instrument 100 further includes a writing body and the like housed inside barrel 110, but a description thereof will be omitted for convenience.
[0012] The barrel 110 has a barrel projection 112 in the shape of a square prism, and a notch 113 into which a clip 120 fits is formed on the writing implement head side of the barrel projection 112. A clip protrusion receiving hole 114 into which a protrusion 126 of a clip 120 described later fits is formed at a predetermined position of the barrel projection 112. A barrel top 115 into which a crown 140 fits is provided at the top of the barrel 110 on the head side. The barrel top 115 has a shape in which a part of the circumference is removed in cross section, and the upper end surface of the removed part extends to the writing implement tip side of the barrel body 111 to form a clip receiving step 116.
[0013] 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 connecting 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 in 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 end sides are connected to each other by an inner member connecting portion 124 (FIGS. 4 and 5). In addition, the clip outer member 121 or the outer / inner member connecting portion 123 has a recess 125 formed therein, the width dimension of which is set smaller from the clip outer member 121 toward the clip inner member 122 (FIG. 6). Furthermore, a convex portion 126 is formed on the inner surface side of the clip outer member 121 near the tip, and the clip convex portion receiving hole 114 is formed on the surface side of the barrel 110 at a position corresponding to the convex portion 126, so that the writing instrument 100 can be easily fixed 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.
[0014] The clip 120 is inserted from the head side of the barrel 110, and with the outer / inner member connecting part 123 fitted into the notch 113 of the barrel 110, the crown 140 is fitted to the barrel top 115 (Fig. 2). This prevents the clip 120 from slipping out of the barrel 110 head side while the clip outer member 121 can move between a state where it is in close contact with the barrel 110 and a state where it is separated or pulled out (Figs. 2 and 3).
[0015] Between the inner periphery of the barrel 110 and the clip inner member 122 of the clip 120, a pair of elongated wire-like and block-like elastic members 130 (biasing members) corresponding to the shape of the pair of rod-like members 122a are provided, so that the clip 120 is biased in a direction in which the clip outer member 121 comes into close contact with the barrel 110 (FIG. 5). More specifically, the clip inner member 122 and the elastic member 130 of the clip 120 are disposed at positions along the inner side of the side wall of the barrel protruding portion 112 of the barrel 110, that is, at positions offset from a plane including the axis of the barrel 110 and facing the direction in which the clip 120 moves, and are configured to be deformable and movable along the inner side of the side wall. This makes it easy to ensure a large diameter for the internal space having a circular cross section in the writing implement 100. In particular, by providing the barrel 110 with the barrel protrusion 112, such as a square prism-shaped one, and arranging the elastic member 130 and the like inside the barrel 110, it is possible to easily ensure a large internal space as described above. However, even if the barrel protrusion 112 is not provided, it is possible to ensure an internal space according to, for example, the wall thickness of the barrel main body 111 by arranging the clip inner member 122 and the elastic member 130 at the offset position as described above.
[0016] The lump-shaped elastic member 130 is an elastic member formed of an elastic body that generates a biasing force by compressive strain caused by compressive stress, that is, an elastic 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 include materials that are considered to be solid as a whole even if they contain fine bubbles. The outer shape of the elastic member 130 may be a rectangular parallelepiped or sheet-like shape, or may be a collection of spheres or a deformable member such as a gel. More specifically, examples of the elastic member 130 as described above include sponge-like ones made of urethane, EPDM (ethylene propylene diene rubber), and silicone, and rubber sheets made of urethane, silicone, NBR (nitrile rubber), and fluororubber. In addition, sheets and felts made of elastomers can be used.
[0017] 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 a pocket of clothing. Moreover, by generating the urging force that retracts the clip 120 by the lump-shaped elastic member 130 as described above, the clip can be easily retracted with a simple and 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 simply sandwiched between the barrel 110 and the clip inner member 122 of the clip 120, which also makes assembly easy.
[0018] (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 to keep the outer diameter small, but this is not limited to the above. The clip inner member 122 may be formed into a curved plate that bulges outward so as to secure the internal space, etc.
[0019] In addition, the elastic member 130 can also be made more compact by making it elongated to correspond to the rod-shaped member 122a. Alternatively, the thickness of the widthwise central portion of the elastic member 130 may be made relatively thinner than the sides.
[0020] Furthermore, 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.
[0021] Furthermore, by forming recesses 125 in the outer and inner member connecting portion 123 etc. as described above, it is relatively easy to pinch or clamp the clip 120 with fingertips or nails and pull it out, but without being 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, by providing widthwise protrusions on the sides of the clip outer member 121 or the outer and inner member connecting portion 123, or by providing a recess on the side of the shaft tube extension portion 112.
[0022] 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 such as a convex portion and a concave portion may be provided at the contact portion between the clip 120 and the barrel 110 in place of or in addition to the cap 140 to prevent the clip from slipping out.
[0023] Moreover, the crown 140 is not limited to being fitted onto the barrel top 115, but may be screwed onto it.
[0024] (Embodiment 2) The writing instrument 100 of the second embodiment differs from the writing instrument 100 of the first embodiment in that, as shown in Figures 7, 9, and 10, a clip 220 is provided instead of the clip outer member 121 and the elastic member 130. More specifically, as shown in Figures 8, 12, and 13, the clip 220 is integrally formed with a clip outer member 221, a pair of spring parts 222 (urging members) disposed at positions along the inner surface of the side wall of the barrel protruding part 112 of the barrel 110 (positions along the edge positions on both sides in the width direction of the clip), i.e., at positions offset from a plane including the axis of the barrel 110 and facing the direction in which the clip 120 moves forward and backward, and a spring part connecting part 223 connecting the clip outer member 221 and the spring part 222. The spring portion 222 is formed at the lower part of the spring portion connecting portion 223 from a rod-shaped parallel portion 222a that is parallel to the axis of the barrel 110 and whose center portion is connected, diagonal material portions 222b that are folded back upward from both ends of the parallel portion 222a, and a spring end connecting portion 222c that connects the tips of the diagonal material portions 222b in the pair of spring portions 222. In addition, a recess 223a is formed on the inner surface side of the spring portion connecting portion 223, so that an internal space with a circular cross section in the writing instrument 100 is secured.
[0025] On the other hand, as shown in Figures 9, 10, and 12, the axle tube 110 has a protruding portion 118 that protrudes from the inner surface of the axle tube extension portion 112 toward the axis of the axle tube 110. The parallel portion 222a and the diagonal portion 222b of the spring portion 222 are movably sandwiched in the gap formed between the protruding portion 118 and the inner surface of the side wall of the axle tube extension portion 112, so that the spring portion 222 is unlikely to fall over. In addition, the inner surface of the axle tube extension portion 112 has a spring receiving portion 117 that abuts against the spring end connecting portion 222c of the spring portion 222 in the clip 220, and the spring portion 222 receives a reaction force of the urging force that draws the clip 220 toward the axis of the axle tube 110. In this embodiment 2, the barrel extension 112 of the barrel 110 is formed with a substantially constant wall thickness near the position corresponding to the protrusion 126 of the clip 220 as shown in FIG. 11, but is not limited thereto, and the inside of the barrel extension 112 may be formed solid as shown in FIG. 4 of embodiment 1.
[0026] Crown 140 is formed with crown main body portion 141 into which barrel top portion 115 of barrel 110 fits, and crown extension portion 142 having a rectangular prism shape similar to barrel extension portion 112 of barrel 110. On the inner surface of crown extension portion 142, spring seat portion 144 and protrusion portion 143 are formed similarly to barrel 110, which receive the reaction force of the urging force of spring portion 222 and prevent spring portion 222 from falling over.
[0027] As described above, by arranging spring portion 222 at a position offset from a plane including the axis of barrel 110, it is also easy to ensure a large diameter for the internal space having a circular cross section in writing instrument 100. Also, by forming spring portion 222 integrally with clip outer member 221, it is easy to reduce the number of parts and simplify the configuration.
[0028] In the above example, the spring end connecting portion 222c of the spring portion 222 of the clip 220 and the protrusion 118 extending toward the axis of the shaft tube 110 are not necessarily required, but by providing these, it is possible to easily stabilize the posture and the biasing force when the clip 220 is pulled out.
[0029] Furthermore, by increasing the length of the elastically deformable portion, such as by providing the diagonal member portion 222b as described above, it becomes easier to reduce the stress generated in each portion and to increase durability.
[0030] (Embodiment 3) The shape of the spring portion 222 in the clip 220 and the dimensions of each portion are not limited to the above, and can be set in various ways according to the required pull-out stroke and pull-out force of the clip 220. For example, as shown in FIG. 14, the parallel portion 222a may be directly provided with the spring end connecting portion 222c without providing the diagonal member portion 222b folded back at both ends. This makes it easy to increase the spring's urging force, that is, to increase the force with which the clip 220 is pulled, by setting the overall length of the spring to be short, and to strengthen the gripping force of the clip 220. In addition, by making the distance between the spring portion connecting portion 223 and the spring end connecting portion 222c longer than in the second embodiment, the clip 220 can be easily pulled out in a parallel movement manner by suppressing the swinging movement around the spring portion connecting portion 223 when it is pulled out.
[0031] (Embodiment 4) Also, as shown in FIG. 15, while having a shape similar to that of the third embodiment, the length of the parallel portion 222a may be set shorter so as to increase the force with which the clip 220 is pulled in, or so as to reduce the space required to accommodate the parallel portion 222a of the spring portion 222, etc., within the barrel 110.
[0032] (Embodiment 5) The clip 220 is not limited to being pulled out by translating it as described above, and may be made to swing so that it can be hung on a pocket of clothing or the like. For example, in a configuration similar to that of the second embodiment, as shown in Fig. 16, an inclined portion 227 may be formed at the top end of the clip outer member 221 on the head side of the barrel 110 so that a gap is formed between the crown 140 and the barrel 110. This allows the top end portion of the clip outer member 221 to be pressed against the crown 140 or the like, causing the clip 220 to swing so as to increase the distance between the writing implement tip of the clip outer member 221 and the barrel 110, and a biasing force in a direction to reduce the distance can be applied.
[0033] The components described in the above embodiments and modified examples may be combined in various ways within a logically possible range. Specifically, for example, a configuration in which the clip 120 can be relatively easily pinched or pinched with fingertips or nails to be pulled out by forming a recess 125 in the outer-inner member connecting portion 123 of the first embodiment may be applied to the clips of other embodiments. Also, the shape of the spring portion 222 as shown in Fig. 14 or Fig. 15 may be applied to the configuration in which the clip 220 is swung as in the fifth embodiment. Also, for example, the shape of the spring portion 222 as shown in Fig. 8, Fig. 14, and Fig. 15 may be combined on the tip side and the top side of the writing implement, or one of them may be omitted. [Explanation of symbols]
[0034] 100 writing instruments 110 Shaft cylinder 111 Shaft cylinder body 112 Shaft tube overhang 113 Notch 114 Clip protrusion receiving hole 115 Top of shaft cylinder 116 Clip receiving part 117 Spring support 118 Convex 120 clips 121 Clip outer member 122 Clip inner member 122a Rod-shaped member 123 External and internal material connection part 124 Inner member connection section 125 Recess 126 Convex 130 Elastic member 140 crown 141 Head crown body 142 Crown overhang 143 Convex 144 Spring support 220 clips 221 Clip outer member 222 Spring part 222a Parallel part 222b Diagonal section 222c Spring end connection 223 Spring connection part 223a Recess 227 Slope
Claims
1. A clip device for a writing instrument, comprising: A shaft cylinder, a clip having a clip outer member disposed on an outer peripheral side of the barrel; a biasing member that applies a biasing force to the clip in a direction toward an axis of the barrel, the biasing member is disposed at a position offset with respect to a plane including an axis of the barrel and facing a direction in which the clip appears and disappears, The biasing member is connected to the clip outer member and has a rod-shaped parallel portion disposed inside the barrel parallel to the axis of the barrel, and a diagonal portion that is folded back from an end of the parallel portion toward the inner surface of the barrel and has an end abutting against the inner surface of the barrel, or a bent portion that is bent from an end of the parallel portion toward the inner surface of the barrel, A clip device for a writing instrument, characterized in that the biasing members are provided in pairs on either side of a plane including the axis of the barrel, and the ends of the diagonal portion or the bent portion of each biasing member are connected via a spring end connecting portion.
2. 2. A clip device for a writing implement according to claim 1, The barrel has a rectangular prism-shaped barrel protrusion, The clip device for a writing implement, wherein the biasing member is configured to be deformable and movable along the inner surface of the side wall of the barrel protruding portion.
3. A clip device for a writing implement according to claim 2, A convex portion is formed protruding from the inner surface of the barrel protruding portion toward the axis of the barrel, and a gap is formed between the convex portion and the inner surface of the side wall of the barrel protruding portion, A clip device for a writing implement, wherein the biasing member is configured to be deformable and movable within the gap.
4. 2. A clip device for a writing implement according to claim 1, A clip device for a writing instrument, characterized in that a gap is formed between the barrel or a member connected to the barrel on the head side of the clip outer member, and the clip is configured to be swingable so as to narrow the gap.
Citation Information
Patent Citations
JP1959-016804Y
JP1966005618Y1
JP1973033251U
JP1973065338U
JP1974035649U