Notebook

Abstract

To provide a writing instrument and a writing instrument body allowing a user to write beautiful characters.SOLUTION: A writing instrument 1 is provided with a shaft 2 accommodating ink A, and a writing instrument body 3 having a tip part 4 and a rear end part 6 to accommodate the shaft 2. The writing instrument body 3 is provided with an inner shaft 10 made of aluminum to coaxially accommodate the shaft 2, and an outer cylinder 11 made of silicon to coaxially accommodate the inner cylinder 10.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a writing instrument and a writing instrument body that enable good handwriting.

Background Art

[0002] Conventionally, in order to enable good handwriting, there are known products configured to allow correct use of writing instruments, and products that improve the feel when holding a writing instrument to make writing easier.

[0003] As an example of the former, for example, Patent Document 1 discloses a writing instrument aid to be worn on the index finger for use.

[0004] Also, as an example of the latter, for example, Patent Document 2 discloses a shaft cylinder for a writing instrument in which a thin layer of silicone rubber is coated on the outer surface of a cylindrical body formed of a synthetic resin.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, the former writing instrument aid needs to be prepared separately from the writing instrument and is troublesome to handle.

[0007] Also, the latter shaft cylinder for a writing instrument has a configuration in which a thin layer is adhered to the cylindrical body, so the feel is only slightly improved.

[0008] The present invention has been made based on the above circumstances, and an object thereof is to provide a writing instrument and a writing instrument body that enable good handwriting. [Means for solving the problem]

[0009] To solve the above problems, the writing instrument according to the present invention comprises a shaft containing ink, a tip end and a rear end, and a writing instrument body that houses the shaft, Shaft holder and, The writing instrument body comprises an inner cylinder made of a hard material that coaxially houses the shaft, and an outer cylinder made of a softer material than the hard material that coaxially houses the inner cylinder. The shaft retainer comprises a front support portion that supports the front ends of the inner and outer cylinders, and a rear support portion that supports the rear ends of the inner and outer cylinders, the shaft retainer being detachable from the rear support portion, the rear support portion having an L-shaped groove, and the shaft retainer having an engaging portion that engages with the L-shaped groove This invention provides a writing instrument characterized by having the following features:

[0010] Furthermore, the writing instrument body according to the present invention is a writing instrument body having a front end and a rear end, and is characterized by comprising an inner cylinder made of a hard material for detachably and coaxially housing a barrel containing ink, and an outer cylinder made of a soft material softer than the hard material for coaxially housing the inner cylinder. [Effects of the Invention]

[0011] According to the writing instrument and writing instrument body of the present invention, one will be able to write letters well. [Brief explanation of the drawing]

[0012] The drawings illustrate specific embodiments of the present invention, including not only essential components of the invention but also optional and preferred embodiments. [Figure 1] A side view showing a writing instrument according to the present invention. [Figure 2] A cross-sectional view showing the writing instrument. [Figure 3] An exploded perspective view showing the writing instrument. [Figure 4] A side view showing the tip support of the writing instrument. [Figure 5] A plan view showing the tip support section of the writing instrument. [Figure 6] A cross-sectional view showing the tip support of the writing instrument. [Figure 7] A perspective view showing a partial cross-section of the tip support of the writing instrument. [Figure 8] A side view showing the rear end support of the writing instrument. [Figure 9] Plan view showing the rear end support portion of the writing instrument. [Figure 10] Cross-sectional view showing the rear end support portion of the writing instrument. [Figure 11] Perspective view showing the tip support portion of the writing instrument. [Figure 12] Side view showing the shaft retainer of the writing instrument. [Figure 13] Plan view showing the shaft retainer of the writing instrument. [Figure 14] Cross-sectional view showing the shaft retainer of the writing instrument. [Figure 15] Perspective view showing the shaft retainer of the writing instrument. [Figure 16] Explanatory drawing showing the operation of the writing instrument.

Mode for Carrying Out the Invention

[0013] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0014] In FIG. 1, reference numeral 1 indicates a writing instrument according to the present invention.

[0015] This writing instrument 1 includes a shaft 2 that houses ink A (shown in FIG. 2), and a writing instrument body 3 that coaxially houses this shaft 2.

[0016] The writing instrument body 3 is provided with a tip support portion 5 on the tip end portion 4 side, and a rear end support portion 7 on the rear end portion 6 side.

[0017] Also, on the rear end portion 6 side of the writing instrument body 3, a shaft retainer 8 that presses the shaft 2 toward the tip end portion 4 side is provided.

[0018] Furthermore, the shaft 2 has a pen tip 9 on one end side, and this pen tip 9 protrudes from the tip end portion 4 side.

[0019] Furthermore, as also shown in FIGS. 2 and 3, the writing instrument body 3 has, for example, a cylindrical inner cylinder 10 and, for example, a cylindrical outer cylinder 11.

[0020] The inner cylinder 10 is made of a metal, such as aluminum (a hard material), and is designed to coaxially house the shaft 2.

[0021] The outer cylinder 11 is made of silicon (a soft material), which is softer than aluminum, and is designed to coaxially house the inner cylinder 10.

[0022] As shown in Figures 4 to 7, the tip support portion 5 includes a tip insertion hole 12 for the shaft 2, a shaft support portion 13 that protrudes into the tip insertion hole 12 and supports the tip portion 4 side of the shaft 2, a tip inner cylinder fixing portion 14 that fits onto the tip portion 4 side of the inner cylinder 10 to fix the inner cylinder 10, and a tip outer cylinder fixing portion 15 that fits onto the tip portion 4 side of the outer cylinder 11 to fix the outer cylinder 11.

[0023] As shown in Figures 8 to 11, the rear end support portion 7 includes a rear end insertion hole 16 for the shaft 2, a rear end inner cylinder fixing portion 17 that fits onto the rear end 6 side of the inner cylinder 10 to fix the inner cylinder 10, and a rear end outer cylinder fixing portion 18 that fits onto the rear end 6 side of the outer cylinder 11 to fix the outer cylinder 11.

[0024] As a result, a cylindrical first gap S1 is formed between the shaft 2 and the inner cylinder 10, and a cylindrical second gap S2 is formed between the inner cylinder 10 and the outer cylinder 11.

[0025] Furthermore, the rear end support portion 7 has an L-shaped groove 19, that is, a first groove 20 extending from the rear end of the rear end support portion 7 in the axial direction towards the front end, a second groove 21 communicating with the first groove 20 and extending in the circumferential direction, and a third groove 22 communicating with the second groove 21 and extending toward the axial rear end portion 6.

[0026] As shown in Figures 13 to 15, the shaft retainer 8 has an inner fitting portion 23 that is detachably fitted into the rear end insertion hole 16 of the rear end support portion 7, a cap portion 24 that is connected to the inner fitting portion 23 and abuts against the rear end support portion 7, and an engaging portion 25 that protrudes from the peripheral wall of the inner fitting portion 23 and engages with the groove 19 of the rear end support portion 7.

[0027] Then, after inserting the shaft 2 into the inner cylinder 10, the inner fitting portion 23 of the shaft retainer 8 is fitted into the rear end insertion hole 16 of the rear end support portion 7 so that the engaging portion 25 engages with the first groove 20. Furthermore, by rotating the shaft retainer 8 so that the engaging portion 25 engages with the second groove 21 and reaches the third groove 22, the shaft 2 can be held in place so that the pen tip 9 protrudes from the tip support portion 5.

[0028] With the above configuration, the inner cylinder 10 is made of aluminum and the outer cylinder 11 is made of silicon. The tip 4 side of the inner cylinder 10 and the outer cylinder 11 are fixed by the tip support part 5, and the rear end 6 side of the inner cylinder 10 and the outer cylinder 11 are fixed by the rear end support part 7. As a result, a cylindrical second gap S2 is formed between the inner cylinder 10 and the outer cylinder 11. Therefore, as shown in Figure 16, when the writing instrument body 3 is held with the fingers P, the outer cylinder 11 made of silicon can be deformed relatively freely and elastically in the radial, axial, and circumferential directions without being constrained by the inner cylinder 10.

[0029] Therefore, the amount of deformation of the outer cylinder 11 can be increased, which makes it easier to write.

[0030] In this case, since there is an inner cylinder 10 made of aluminum inside the outer cylinder 11, excessive deformation is prevented.

[0031] Furthermore, since the outer cylinder 11 is fixed at both ends by the front support portion 5 and the rear support portion 7 which are fixed to both ends of the inner cylinder 10, axial extension can be prevented.

[0032] In the above embodiment, a cylindrical second gap S2 is formed between the inner cylinder 10 and the outer cylinder 11. However, the present invention is not limited to this, and any configuration is acceptable in which the inner cylinder 10 does not restrict the deformation of the outer cylinder 11 even when the outer circumferential surface of the inner cylinder 10 and the inner circumferential surface of the outer cylinder 11 are in contact.

[0033] Furthermore, although the outer cylinder 11 is made of silicone, it is not limited to this; other soft materials can be used as long as they can maintain a cylindrical shape.

[0034] Furthermore, although the inner cylinder 10 is made of a metal such as aluminum, it is not limited to this and may be made of a hard resin or other material. Furthermore, although the inner cylinder 10 and outer cylinder 11 are formed in a cylindrical shape, they are not limited to this, and could be, for example, rectangular, or any other cylindrical shape.

[0035] The disclosure relating to the present invention described above can be summarized to at least the following:

[0036] In other words, the writing instrument according to the present invention has a shaft containing ink, a tip end and a rear end, and a writing instrument body that houses the shaft, Shaft holder and, The writing instrument body comprises an inner cylinder made of a hard material that coaxially houses the shaft, and an outer cylinder made of a softer material than the hard material that coaxially houses the inner cylinder. The shaft retainer comprises a front support portion that supports the front ends of the inner and outer cylinders, and a rear support portion that supports the rear ends of the inner and outer cylinders, the shaft retainer being detachable from the rear support portion, the rear support portion having an L-shaped groove, and the shaft retainer having an engaging portion that engages with the L-shaped groove It is characterized by having the following features.

[0037] Furthermore, the writing instrument body according to the present invention is a writing instrument body having a front end and a rear end, and is characterized by comprising an inner cylinder made of a hard material for detachably and coaxially housing a barrel containing ink, and an outer cylinder made of a soft material softer than the hard material for coaxially housing the inner cylinder.

[0038] The present invention described above may include at least the following embodiments. These embodiments may be adopted separately or in combination with each other.

[0040] ( 1 The soft material is made of silicone.

[0041] ( 2 Hard materials are made of metal.

[0042] ( 3 The metal is made of aluminum.

[0043] ( 4 A first gap is provided between the shaft and the inner cylinder.

[0044] ( 5 A second gap is provided between the inner cylinder and the cylinder. [Explanation of Symbols]

[0045] A Ink 1 writing implements 2 axes 3. Writing instrument body 4 Tip 5 Tip support part 6 Rear end 7 Rear end support part 10 Inner cylinder 11 Outer cylinder S1 First Gap S2 The second gap

Claims

1. The barrel containing the ink, A writing instrument body having a front end and a rear end, housing the shaft, and a shaft retainer, Equipped with, The writing instrument body is, An inner cylinder made of a rigid material that coaxially houses the shaft, An outer cylinder made of a softer material than the hard material, which coaxially houses the inner cylinder, A tip support portion that supports the respective tip ends of the inner cylinder and the outer cylinder, A rear end support portion that supports the rear end sides of the inner cylinder and the outer cylinder, Equipped with, The shaft retainer is detachably attached to the rear end support portion. The aforementioned rear end support portion is provided with an L-shaped groove, The shaft retainer has an engaging portion that engages with the L-shaped groove. A writing instrument characterized by having the following features.

2. The writing instrument according to claim 1, characterized in that the soft material is made of silicone.

3. The writing instrument according to claim 1, characterized in that the hard material is made of metal.

4. The writing instrument according to claim 3, characterized in that the aforementioned metal is made of aluminum.

5. The writing instrument according to claim 1, characterized in that it has a first gap between the shaft and the inner cylinder.

6. The writing instrument according to claim 1, characterized in that a second gap is provided between the inner cylinder and the outer cylinder.

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