Structure of a writing instrument holder
The integrated shaft and clip guide design in the writing instrument holder simplifies the structure, reducing complexity and breakage risk while supporting a broader range of shaft diameters, enhancing usability and durability.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- KOKUYO CO LTD
- Filing Date
- 2022-08-08
- Publication Date
- 2026-07-22
AI Technical Summary
Conventional writing instrument holders require multiple parts, including a pressing member and a spring, which increase complexity, breakage risk, and limit the shaft diameter they can accommodate.
A writing instrument holder with a recessed shaft holding portion and a clip guide portion integrated into a clipboard, allowing the shaft to be supported and the clip to be guided without additional parts, reducing complexity and enhancing rigidity.
The holder supports writing instruments with a simple structure, minimizing part count, reducing breakage risk, and accommodating a wider range of shaft diameters while maintaining ease of insertion and removal.
Smart Images

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Abstract
Description
Technical Field
[0001] The present invention relates to the structure of a writing instrument holder that supports writing instruments.
Background Art
[0002] A clipboard (or sheet holder, paper clip, paper holder) that can hold one or more sheets of paper is known.
[0003] Clipboards are usually used in combination with ballpoint pens and other writing instruments. Therefore, as disclosed in the following patent documents, for example, it is also common to provide a clipboard with a holder that can support a writing instrument and carry it together with sheets of paper.
[0004] Conventional writing instrument holders are configured to attach a pressing member that covers from above the clipboard to the main body of the clipboard, and hold the writing instrument between the pressing member and the clipboard main body.
[0005] However, in such a case, it requires the labor of assembling a pressing member, a spring that elastically biases the pressing member in a direction approaching the clipboard main body, etc. to the clipboard main body, and the number of parts also increases. In addition, the shaft diameter of the writing instrument that can be held is limited. Moreover, since the pressing member, the spring, etc. are separate bodies (separate members) from the clipboard main body, the possibility of their breakage increases.
Prior Art Documents
Patent Documents
[0006]
Patent Document 1
Patent Document 2
Summary of the Invention
Problems to be Solved by the Invention
[0007] This invention aims to provide a holder that can properly support a writing instrument with a simple structure. [Means for solving the problem]
[0008] The structure of a writing instrument holder for supporting a writing instrument according to the present invention comprises a shaft holding portion that is recessed downward in relation to the left and / or right side adjacent to the shaft of the target writing instrument, and whose surface abuts against the shaft of the writing instrument, and a clip guide portion provided on the back surface of the shaft holding portion that protrudes downward from the back surface of the shaft holding portion and abuts against or comes very close to the clip of the writing instrument or slides the clip. The back surface of the shaft holder portion has a shape substantially similar to the front surface of the shaft holder portion, and the clip guide portion protrudes downward from the back surface of the shaft holder portion and extends along the direction in which the shaft of the writing instrument extends. .
[0009] The surface of the shaft holder is typically partially cylindrical when viewed along the direction in which the shaft of the writing instrument extends.
[0011] The shaft holding portion and the clip guide portion are provided, for example, on a clipboard capable of holding one or more sheets of paper.
[0012] The aforementioned clipboard holds the paper sheets placed on its upper surface. In this clipboard, it is preferable that the shaft holding portion is provided on the upper surface side of the clipboard, and the clip guide portion does not protrude below the lower surface of the clipboard. [Effects of the Invention]
[0013] According to the present invention, a holder that properly supports a writing instrument can be realized with a simple configuration. [Brief explanation of the drawing]
[0014] [Figure 1] A perspective view showing the clipboard of one embodiment of the present invention. [Figure 2] A perspective view showing a magnified view of the writing instrument holder of the clipboard in the same embodiment. [Figure 3]Perspective view of the clipboard with the pen holder of the same embodiment enlarged, seen from the rear lower side of the clipboard. [Figure 4] Perspective view of the clipboard with the pen holder of the same embodiment enlarged, seen from the rear lower side of the clipboard. [Figure 5] Side sectional view showing the pen holder of the clipboard of the same embodiment enlarged. [Figure 6] Cross-sectional view of the clipboard with the pen holder of the same embodiment enlarged, seen from the rear of the clipboard. [Figure 7] Perspective view of the clipboard with the pen holder of the same embodiment enlarged, seen from the rear lower side of the clipboard. [Figure 8] Side sectional view showing the pen holder of the clipboard of the same embodiment enlarged. [Figure 9] Perspective view of the clipboard with the pen holder according to one of the modified examples of the present invention enlarged, seen from the rear lower side of the clipboard. [Figure 10] Cross-sectional view of the clipboard with the pen holder of the same modified example enlarged, seen from the rear of the clipboard. [Figure 11] Perspective view of the clipboard with the pen holder according to one of the modified examples of the present invention enlarged.
Mode for Carrying Out the Invention
[0015] One embodiment of the present invention will be described with reference to the drawings. In FIG. 1, a clipboard 0 to which a pen holder 14 of the present embodiment is applied is shown.
[0016] This clipboard 0 is provided with a clip 2 for sandwiching and holding paper sheets P at the center of the rear end portion of the board body 1 (the end portion further away from the user of the clipboard 0). The main body 1 has a generally rectangular thin plate shape, and includes a face plate 11 on which one or more paper sheets P can be placed on its surface, i.e., the upper surface, a side wall 12 that stands upright upward from one side end portion of the face plate 11, a dike portion 13 that stands upright upward from a portion of the rear end portion of the face plate 11 where the clip 2 is not located, and a writing tool holder 14 formed on the dike portion 13. The clip 2 is supported by the face plate 11 and presses the paper sheets P placed on the upper surface of the face plate 11 from above. The paper sheets P are sandwiched between the clip 2 and the face plate 11. The mechanism and structure of the clip 2 are arbitrary.
[0017] The face plate 11, side wall 12, dike portion 13, and writing tool holder 14 of the main body 1 are integrally formed of, for example, a hard resin. The side wall 12 stands upright along the left edge of the face plate 11 and extends along the front-rear direction. This side wall 12 has a shape such that its height gradually decreases from the rear end side to the front end side of the face plate 11 (towards the front of the user of the clipboard 0). The inner surface of the side wall 12 can abut against the edge of the paper sheets P.
[0018] The dike portion 13 stands upright along the rear edge portion of the face plate 11 and extends in the left-right direction except for the portion where the clip 2 is located. One side end, i.e., the left side end, of the dike portion 13 is connected to the rear end of the side wall 12. The front surface of the dike portion 13 can abut against the edge of the paper sheets P.
[0019] The writing tool holder 14 is located at a position close to the other side end, i.e., the right side end, of the dike portion 13, and can support the writing tool 3 used by the user to be detachable with respect to this clipboard 0.
[0020] To add to this, typical writing instruments 3 often have a clip 32. The clip 32 is connected to the rear end of the shaft 31 and extends forward along the direction in which the shaft 31 extends, facing the outer circumferential surface of the shaft 31. The front end of the clip 32 is provided with a projection 321 that protrudes from its inward-facing surface toward the outer circumferential surface of the shaft 31. As shown in Figures 1, 3, 5, and 6, when the writing instrument 3 is held in the writing instrument holder 14, the shaft 31 of the writing instrument 3 and the clip 32 (especially the projection 321) clamp and grip the writing instrument holder 14 from above and below.
[0021] Figures 2 to 6 show the structure of the writing instrument holder 14. The writing instrument holder 14 comprises a shaft holding portion 141 that is recessed below the surface, i.e., the upper surface, of the rim portion 13 and can receive the shaft 31 of the writing instrument 3, and a clip guide portion (or clip receiving portion) 142 provided on the back surface, i.e., the lower surface, of the shaft holding portion 141, into which the projection 32 of the clip 321 of the writing instrument 3 slides.
[0022] The ridge portion 13 has a channel shape that opens downward in a side cross-sectional view and extends along the left-right direction. The shaft holding portion 141 is shaped to recess the top wall of the ridge portion 13 from above. The shaft holding portion 141 has a partially cylindrical or semi-cylindrical shape that is open upward. The shaft holding portion 141 extends along the front-to-back (depth) direction of the faceplate 11 of the clipboard 0, and is also substantially parallel to the upper surface of the faceplate 11 on which the paper sheets P are placed. Incidentally, as shown in Figure 6, the top wall of the ridge portion 13 slopes gently downward toward the right side of the faceplate 11 (Note: Figure 6 is a rear view, so left and right are reversed compared to the description herein). The portion 131 of the top wall adjacent to the left side of the shaft holding portion 141 and the portion 132 of the top wall adjacent to the right side of the shaft holding portion 141 both bulge upward so as to be at a higher position than the shaft holding portion 141. However, the latter portion 132 is slightly lower than the former portion 131.
[0023] As shown in Figures 2 and 5, the surface, or top surface, of the shaft holder 141, even at its lowest bottom, is elevated above the top surface of the faceplate 11 on which the paper sheets P are placed. As shown in Figures 1, 3, 5, and 6, when the writing instrument 3 is held in the writing instrument holder 14, the outer circumferential surface of the shaft 31 of the writing instrument 3 is supported by contact with the top surface of the shaft holder 141.
[0024] As shown in Figures 3 to 6, the back surface, or bottom surface, of the shaft holding portion 141 is also partially cylindrical or semi-cylindrical, similar in shape to the top surface of the shaft holding portion 141. The clip guide portion 142 protrudes below the bottom surface of the shaft holding portion 141 and is a convex ridge that extends along the front-rear direction of the faceplate 11 of the clipboard 0. When the writing instrument 3 is held in the writing instrument holder 14, the clip 32 of the writing instrument 3, particularly the projection 321, comes into contact with or very close to the clip guide portion 142.
[0025] In addition, a rear wall 133 extends horizontally from the rear edge of the ridge portion 13. Furthermore, a rib 111 extending horizontally is formed on the back surface, i.e., the bottom surface, of the faceplate 11, near the boundary with the ridge portion 13. The lower edges of these side walls 12 and ribs 111 protrude slightly below the bottom surface of the faceplate 11. Moreover, notches 112 and 134 that recess upward are formed in the rear wall 133 and ribs 111, directly below the shaft holding portion 141. The notches 112 and 134 exist to allow the clip 32 of the writing instrument 3 to pass through. This allows the writing instrument 3 to be easily inserted into and removed from the writing instrument holder 14 of the clipboard 0 along the front-to-back direction.
[0026] Furthermore, in conjunction with the shape and position of the upper surface of the shaft holder 141, the shaft 31 of the writing instrument 3 housed in the shaft holder 141 is supported in a position approximately parallel to the upper surface of the faceplate 11, that is, in a position floating above the sheets of paper P on the faceplate 11. This prevents the shaft 31 from touching or rubbing against the sheets of paper P when inserting or removing the writing instrument 3. Conversely, this means that the sheets of paper P held by the clip 2 can be removed or additional sheets of paper P can be held by the clip 2 while the writing instrument 3 remains attached to the writing instrument holder 14.
[0027] The lower surfaces of the notches 112 and 134 are substantially flush with the lower surface of the clip guide portion 142 that protrudes downward from the shaft holding portion 141, and together they form a roughly I-shape when viewed from below, as shown in Figure 4. In Figure 4 (and also in Figure 9, which shows a modified example described later), the lower surfaces of the notches 112 and 134 and the clip guide portion 142 are represented by halftone dots. The lower surfaces of these notches 112 and 134 and the clip guide portion 142 do not protrude below the lower surface of the faceplate 11 of the clipboard 0.
[0028] The structure of the writing instrument holder 14 that supports the writing instrument 3 in this embodiment comprises a shaft holding portion 141 that is recessed downward relative to the left and right adjacent portions 131 and 132 of the shaft 31 of the target writing instrument 3, with its surface contacting the shaft 31 of the writing instrument 3, and a clip guide portion 142 provided on the back surface, i.e., the bottom surface, of the shaft holding portion 141, which protrudes downward from the bottom surface of the shaft holding portion 141 and contacts or is very close to the clip 32 of the writing instrument 3. According to this embodiment, a holder 14 that can properly support the writing instrument 3 can be realized with a simple configuration.
[0029] By thinning the ridge portion 13 and the writing instrument holder 14 (parts other than the top walls 131 and 132, the rear wall 133, the ribs 111, the shaft holding portion 141, and the clip guide portion 142) of the board body 1, the amount of resin material consumed when manufacturing the components of the board 0 excluding the clip 2 is reduced, making it easier to remove from the mold, and further reducing the adverse effects of shrinkage ("yield") that occurs when the resin material cools. Although the board body 1 is generally thinned, a convex clip guide portion 142 is provided, and this clip guide portion 142 is connected to the rear wall 133 and the ribs 111, which also reinforces the rigidity of the ridge portion 13 and the shaft holding portion 141.
[0030] Furthermore, as shown in Figures 7 and 8, it is also possible to insert the writing instrument 3 deeply into the body 1 of the clipboard 0 such that the projection 321 of the clip 32 of the writing instrument 3 extends beyond the rib 111 and is positioned towards the user (in this case, the projection 321 contacts or is very close to the back surface, i.e., the bottom surface, of the faceplate 11). When the user inserts or removes the writing instrument 3 from the body 1 of the clipboard 0, the clip 32 of the writing instrument 3, particularly its projection 321, slides or moves against the clip guide portion 142 of the writing instrument holder 14 as it is guided to the clip guide portion 142.
[0031] It should be noted that the present invention is not limited to the embodiments described in detail above. For example, as shown in Figures 9 and 10, two clip guide portions 142, which are convex ridges extending in the front-rear direction, may be provided on the left and right sides, substantially parallel to each other, and the clip 32 of the writing instrument 3 (especially the projection 321) may be sandwiched between them, so that the clip 32 (especially the projection 321) comes into contact with or is very close to the clip guide portions 142.
[0032] The shaft holding portion 141 is not necessarily semi-cylindrical. As shown in Figure 11, the portion 132 adjacent to the right side of the shaft holding portion 141 of the writing instrument holder 14 (or the portion 131 adjacent to the left side) may be cut off so that it is substantially flush with the bottom of the shaft holding portion 141.
[0033] Furthermore, the specific configuration of each part can be modified in various ways without departing from the spirit of the present invention. [Explanation of symbols]
[0034] 0... Clipboard 1…Board body 11…Face plate 111... Rib 112... notch 12…Side wall 13…Bank part 131, 132... Locations adjacent to the shaft holding part of the writing instrument holder. 133…Back wall 134...notch 14…Writing instrument holder 141...Shaft holding part 142...Clip guide section 2…A clip that holds papers on a clipboard. 3…Writing implements 31... Axis 32…Pen clip 321…Protrusion P…paper leaves
Claims
1. A structure for a writing instrument holder that supports a writing instrument, A shaft holding portion that is recessed downwards on the left or right side adjacent to the shaft of the target writing instrument, and whose surface contacts the shaft of the writing instrument, A clip guide portion is provided on the back surface of the shaft holder portion, protruding downward from the back surface of the shaft holder portion, and contacting or being very close to the clip of the writing instrument, or sliding the clip. It is equipped with, The back surface of the shaft holding portion has a shape substantially similar to the surface of the coaxial holding portion. A writing instrument holder structure in which the clip guide portion protrudes downward from the back surface of the shaft holding portion and extends along the direction in which the shaft of the writing instrument extends.
2. The structure of the writing instrument holder according to claim 1, wherein the surface of the shaft holding portion is partially cylindrical when viewed along the direction in which the shaft of the writing instrument extends.
3. The structure of the writing instrument holder according to claim 1, wherein the shaft holding portion and the clip guide portion are provided on a clipboard capable of holding one or more sheets of paper.
4. The clipboard holds the paper sheets placed on its upper surface, The shaft holding portion is provided on the upper surface side of the clipboard. The structure of the writing instrument holder according to claim 3, wherein the clip guide portion does not protrude below the lower surface of the clipboard.