Grip for electronic pen and electronic pen

Abstract

This invention provides an electronic pen grip and an electronic pen that are simple to assemble and reliably attach to an electronic pen. The grip is an electronic pen grip that covers the side circumferential surface of the cylindrical housing of the electronic pen. The grip is constructed as a cylindrical body, and the cross-sectional shape of the hollow portion of the cylindrical body corresponds to the outer cross-sectional shape of the electronic pen housing. The cylindrical body constituting the grip has a double-structured structure formed by an inner cylindrical portion and an outer cylindrical portion. The inner cylindrical portion has an inner wall portion that contacts the side circumferential surface of the electronic pen housing, and the outer cylindrical portion covers the inner cylindrical portion. The inner cylindrical portion has an axially oriented slit and is made of elastic resin.

Description

Technical Field

[0001] This utility model relates to a grip for an electronic pen and an electronic pen. Background Technology

[0002] In the past, among writing instruments such as ballpoint pens and pencils used as stationery, there were writing instruments with handles made of rubber or the like installed on the part of the writing instrument to make it easier to hold (for example, see Patent Document 1 (Japanese Patent Application Publication No. 2012-115772)).

[0003] In recent years, electronic pens that can save handwriting as data instead of writing instruments that leave writing marks on paper (see Patent Document 2 (Japanese Patent Application Publication No. 2018-018149) etc.) have become increasingly popular.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2012-115772

[0007] Patent Document 2: Japanese Patent Application Publication No. 2011-186803 Utility Model Content

[0008] The problem to be solved by the utility model

[0009] Similar to the writing instruments described above, there is a desire to install a handle, such as a rubber grip, on the part of the electronic pen that is held in place. In this case, considering that some users of electronic pens may wish to use them without a grip, it would be more convenient if the pen were not designed with a grip but rather one that could be attached later. Furthermore, it is important that the grip is easy to assemble and reliably attach to the electronic pen.

[0010] The purpose of this invention is to provide a grip for an electronic pen that can solve the above-mentioned problems.

[0011] Methods for solving problems

[0012] To solve the above-mentioned problems, a grip for an electronic pen is provided, which covers the side circumferential surface of the cylindrical housing of the electronic pen, characterized in that...

[0013] The handle is cylindrical, and the cross-sectional shape of the hollow portion of the cylindrical body corresponds to the cross-sectional shape of the electronic pen's casing.

[0014] The cylindrical body has a dual structure consisting of an inner cylindrical portion and an outer cylindrical portion. The inner cylindrical portion has an inner wall portion that contacts the side circumferential surface of the electronic pen's housing, and the outer cylindrical portion covers the inner cylindrical portion.

[0015] The inner cylindrical portion has an axially oriented slit and is made of an elastic material.

[0016] In the grip for an electronic pen with the above-described structure, when the grip covers the side circumference of the cylindrical housing of the electronic pen, the assembly of the grip relative to the housing of the electronic pen is simplified because the inner cylindrical portion is made of an elastic material and has a slit in the axial direction. Furthermore, in the assembled state, the grip is firmly locked relative to the housing of the electronic pen by the elastic contraction force of the inner cylindrical portion made of the elastic material. Attached Figure Description

[0017] Figure 1 This is a diagram illustrating the appearance of an embodiment of the electronic pen and the grip for the electronic pen according to the present invention.

[0018] Figure 2 This is a structural example illustrating an embodiment of the electronic pen and grip for the electronic pen according to the present invention.

[0019] Figure 3 This is a diagram illustrating an example of an embodiment of the grip for the electronic pen of this invention.

[0020] Figure 4 This is a figure illustrating another example of an embodiment of the grip for the electronic pen of this invention.

[0021] Figure 5 This is a figure illustrating another example of an embodiment of the grip for the electronic pen of this invention.

[0022] Figure 6 This is a figure illustrating another example of an embodiment of the grip for the electronic pen of this invention.

[0023] Figure 7 This is a diagram illustrating the appearance and structure of another embodiment of the electronic pen of this utility model. Detailed Implementation

[0024] The following is a reference. Figure 1 The embodiments of the grip for the electronic pen of this invention will be described together with the embodiments of the electronic pen.

[0025] Figure 1 This is a diagram showing an example of an embodiment of the electronic pen 1 of the present invention and an example of an embodiment of the grip 2 for the electronic pen assembled with the electronic pen 1 of this embodiment. Figure 1 (A) is a perspective view of the electronic pen 1 according to this embodiment. Figure 1 (B) is a perspective view of the grip (hereinafter referred to as grip) 2 for the electronic pen according to this embodiment. Figure 1 (C) is a perspective view of the electronic pen 1 with the handle 2 attached. Additionally, Figure 2 (A) is an exploded perspective view of the electronic pen 1 of this embodiment.

[0026] The housing (pen housing) 10 of the electronic pen 1 in this embodiment is cylindrical, specifically a cylindrical shape in this example. In this example, as... Figure 1 (A) and Figure 2 As shown in (A), the housing 10 is constructed by joining a cylindrical first housing 11 (hereinafter referred to as the pen tip side housing 11) on the pen tip side and a cylindrical second housing 12 (hereinafter referred to as the rear end side housing 12) on the rear end side opposite to the pen tip side in the axial direction.

[0027] The nib-side housing 11 has a tapered portion 11t that tapers gradually at one end in the axial direction of the nib side, and the top end of the core 13 protrudes outward from the opening at the top end of the tapered portion 11t. Although not shown in the figure, the rear end of the rear end housing 12 is closed.

[0028] In this example, the pen tip side housing 11 and the rear end side housing 12 are screwed together. Therefore, a connecting portion 11a with a diameter slightly smaller than the inner diameter of the rear end side housing 12 is provided on the rear end side of the pen tip side housing 11, and a threaded portion 11b is formed in this connecting portion 11a. Furthermore, a threaded portion 12b is provided on the inner wall surface of the opening 12a on the pen tip side of the rear end side housing 12, which engages with the threaded portion 11b of the connecting portion 11a of the pen tip side housing 11.

[0029] Furthermore, in the electronic pen 1 of this embodiment, as... Figure 2 As shown in (A), with the core holder 15 housed in the rear end housing 12, the connecting part 11a of the rear end of the tip housing 11 is inserted into the hollow part of the rear end housing 12, and the rear end housing 12 is screwed into the connecting part 11a of the tip housing 11, thereby connecting the tip housing 11 and the rear end housing 12.

[0030] In this case, the outer diameter of the connecting portion 11a at the rear end of the pen tip side housing 11 is smaller than the outer diameter of the portion of the pen tip side housing 11 that is closer to the pen tip side than the connecting portion 11a. Therefore, as Figure 2 (A) and Figure 2As shown in (B), a stepped portion 11c is formed at the root of the connecting portion 11a. Therefore, when the rear end housing 12 is screwed into the connecting portion 11a of the pen tip housing 11, the annular end face 12c of the pen tip side of the rear end housing 12 (see reference) Figure 2 The pen tip side housing 11 and the rear end side housing 12 are firmly joined together by the annular wall surface of the stepped portion 11c of the root portion of the (A) and the connecting portion 11a.

[0031] In the electronic pen 1 of this embodiment, the outer diameters of the pen tip side housing 11 and the rear end side housing 12 are equal. Therefore, no step is generated on the peripheral side surface of the electronic pen 1 at the joint between the pen tip side housing 11 and the rear end side housing 12, and the peripheral side surface of the housing 10 is configured to be coplanar over the entire range in the axial direction.

[0032] like Figure 2 As shown in (A), the refill holder 15 has a hole (not shown) for inserting a replacement refill 13' in such a way that it can hold two replacement refills 13' in this example. Additionally, the refill holder 15 has a pull-out hole 15a on its tip-side end face for removing the refill 13 from the electronic pen 1. That is, when replacing the refill 13, by pressing the tip of the refill 13, which protrudes outward from the housing 10 of the electronic pen 1, into the pull-out hole 15a of the refill holder 15, the refill holder 15 can hold the refill 13. By pulling the refill holder 15 away from the housing 10 of the electronic pen 1 along the axial direction while it is held in this position, the refill 13 can be removed from the electronic pen 1.

[0033] Although not shown in the diagram, the main body of the electronic pen is housed within the hollow portion of the pen tip-side housing 11. When the electronic pen 1 is an electromagnetic induction type, the main body includes a magnetic core, such as a ferrite core, with a coil wound around it near the opening on the pen tip side; a circuit board with a capacitor forming a resonant circuit together with the coil wound around the ferrite core; and a pen pressure detection unit that detects the pressure (pen pressure) applied to the tip of the core 13. When the electronic pen 1 is an electromagnetic induction type, both the pen tip-side housing 11 and the rear end housing 12 are made of a non-conductive resin material.

[0034] Furthermore, when the electronic pen 1 uses a capacitive coupling method, the core 13 is made of a conductive material, and the main body of the electronic pen includes a pen pressure detection unit that detects the pressure (pen pressure) applied to the tip of the core 13, and a circuit board equipped with a signal transmission circuit that generates a signal transmitted to a position detection sensor through the core 13. When the electronic pen 1 uses a capacitive coupling method, both the tip-side housing 11 and the rear-side housing 12 may be made of a conductive material, such as metal; alternatively, the tip-side housing 11 may be made of a conductive metal, and the rear-side housing 12 may be made of a non-conductive resin.

[0035] Furthermore, in this embodiment, in the electronic pen 1, regardless of whether it is in the case of electromagnetic induction or electrostatic capacitive coupling, it is as follows: Figure 1 As shown in (A), a side switch is provided on the circuit board of the main body of the electronic pen, which is turned on and off by the operation part 14 provided on the side of the housing 10.

[0036] In this example, such as Figure 1 (A) and Figure 2 As shown in (A), an opening (through hole) 11H for mounting the operation unit 14 is formed on the side peripheral surface of the pen tip housing 11, above the side switch of the circuit board disposed on the main body of the electronic pen. The operation unit 14 includes an operation plate 14a embedded in the opening 11H and buttons mounted on the operation plate 14a to switch the side switch of the circuit board disposed on the main body of the electronic pen; in this example, there are three buttons 14b, 14c, and 14d.

[0037] It should be noted that in the electronic pen 1 of this embodiment, the three buttons 14b, 14c, and 14d of the operation section 14 are exposed from the opening 11H on the side circumferential surface of the pen tip side housing 11, but their height is not higher than the side circumferential surface of the pen tip side housing 11.

[0038] like Figure 1 As shown in (B) and (C), the grip 2 of this embodiment is composed of a cylindrical body 20 having a length in the axial direction that is approximately equal to the length of the pen tip-side housing 11 of the electronic pen 1, excluding the conical portion 11t. In this example, the cylindrical body 20 constituting the grip 2 is configured such that the pen tip side in the axial direction has a conical shape that bulges out from the other parts and is parallel to the conical portion 11t.

[0039] The shape of the cross-section of the hollow portion of the cylindrical body 20 constituting the handle 2 corresponds to the shape of the cross-section of the housing 10 of the electronic pen 1, and in this embodiment, it is circular. Furthermore, in this embodiment, as... Figure 1 (B) and Figure 2 As shown in (C), the cylindrical body 20 constituting the grip 2 has a dual-structure formed by an inner cylindrical portion 21 and an outer cylindrical portion 22. In this example, the inner cylindrical portion 21 has an inner wall portion that contacts the side peripheral surface of the pen tip side housing 11 of the electronic pen 1's housing 10, and the outer cylindrical portion 22 covers the inner cylindrical portion 21. It should be noted that... Figure 1 (B) is a diagram showing the grip 2 viewed from the oblique front of the pen tip. Additionally, Figure 2 (C) is a diagram of the grip 2 viewed from the rear side at an angle.

[0040] In this embodiment, such as Figure 1 (B) and Figure 2 As shown in (C), the grip 2 has openings (through holes) 2H for operating the buttons 14b, 14c, and 14d of the operation section 14 of the electronic pen 1. These openings 2H are formed by aligning and overlapping openings (through holes) 21H formed in the inner cylindrical portion 21 and openings (through holes) 22H formed in the outer cylindrical portion 22. In this embodiment, the openings 2H, 21H, and 22H of the grip 2 have the same shape and size as the opening 11H of the pen tip side housing 11 of the electronic pen 1.

[0041] Figure 3 An example of the inner cylindrical portion 21 and the outer cylindrical portion 22 constituting the handle 2 is shown. Figure 3 (A) shows an example of the outer cylindrical portion 22. The outer cylindrical portion 22 has a cylindrical structure in which the tip side bulges outwards from the other parts in the axial direction, and has the aforementioned opening 22H. The inner diameter of the outer cylindrical portion 22 is equal to or slightly larger than the outer diameter of the inner cylindrical portion 21. In this embodiment, the outer cylindrical portion 22 is made of an elastic component, such as rubber.

[0042] Figure 3 (B) shows an example of the inner cylindrical portion 21. In this embodiment, the inner cylindrical portion 21 is a cylindrical structure having the aforementioned opening 21H and an axially oriented slit 21s. The inner diameter of the inner cylindrical portion 21 is equal to or approximately equal to the outer diameter of the pen tip side housing 11. The slit 21s is formed along the entire length of the inner cylindrical portion 21 in the axial direction; in this example, as shown... Figure 3 As shown in (B), the slit 21s communicates with the opening 21H. That is, in this example, the opening 21H constitutes a part of the slit 21s. In this embodiment, the inner cylindrical portion 21 is made of an elastic material (in this example, an elastic hard resin).

[0043] In this embodiment, the inner cylindrical portion 21 and the outer cylindrical portion 22 are configured to be bonded together, for example, with an adhesive, without shifting in the axial direction. However, if the frictional resistance between the inner cylindrical portion 21 and the outer cylindrical portion 22 is large, and the inner cylindrical portion 21 does not easily detach from the outer cylindrical portion 22 in the axial direction, it is not necessary to bond them together for fixation.

[0044] Furthermore, in this embodiment, a protrusion 21p is formed at the rear end of the inner cylindrical portion 21, protruding inwards towards the inner side of the inner cylindrical portion 21 in a direction intersecting the axial direction of the inner cylindrical portion 21 (in this example, a direction orthogonal to the axial direction). In this case, the protrusion 21p is formed to protrude towards the center direction of the cross-section of the hollow portion of the inner cylindrical portion 21.

[0045] The protrusion 21p is formed in the circumferential direction centered on the axis of the inner cylindrical portion 21 at a position that is angularly related to the opening 21H, and in this example, at an angular interval of 180 degrees relative to the opening 21H. Thus, the protrusion 21p is configured to, when the grip 2 is fitted onto the housing 10 of the electronic pen 1, align the opening 21H with the operating part 14 of the side switch of the electronic pen 1, thereby enabling the operation of the three buttons 14b, 14c, and 14d.

[0046] In the rear end of the housing 11 of the electronic pen 1, the connecting part 11a is positioned at a predetermined angle to the opening 11H on its side peripheral surface. In this example, it is positioned at an angle interval of 180 degrees relative to the opening 11H. Figure 2 As shown in (B), an axial groove 11d is formed from the top of its rear end to the position of the stepped portion 11c. In this case, the groove 11d is also formed in the threaded portion 11b.

[0047] Furthermore, the protrusion height of the protrusion 21p at the rear end of the inner cylindrical portion 21 of the grip 2 corresponds to the depth of the groove 11d. It should be noted that, in this embodiment, an annular protrusion 21r is formed at the rear end of the inner cylindrical portion 21 of the grip 2, with a thickness equal to that of the protrusion 21p in the axial direction and protruding annularly inward towards the inner side of the inner cylindrical portion 21, with the width of the annular wall surface of the step portion 11c of the pen tip side housing 11 of the electronic pen 1. Therefore, the size (diameter) of the opening at the rear end of the inner cylindrical portion 21 is smaller than the size (diameter) of the opening at the pen tip side of the inner cylindrical portion 21.

[0048] In the electronic pen 1 of this embodiment, during the assembly of the grip 2, the housing 10 of the electronic pen 1 is first separated into a tip-side housing 11 and a rear-end housing 12. Then, starting from the rear end of the tip-side housing 11, with the tip side of the grip 2 in front, the grip 2 is placed over the tip-side housing 11 and moved along the tip side in the axial direction, thereby covering the entire tip-side housing 11 except for the tapered portion 11t. At this time, the grip 2 is aligned so that the position of the protrusion 21p of the grip 2 aligns with the position of the groove 11d of the fitting portion 11a of the tip-side housing 11, and the grip 2 is placed over the tip-side housing 11.

[0049] In this embodiment, the inner cylindrical portion 21 of the grip 2 has a slit 21s, thus allowing it to extend and retract in a direction orthogonal to the axial direction. Furthermore, in this embodiment, the outer cylindrical portion 22 is made of elastic rubber, so it can also extend and retract in a direction orthogonal to the axial direction. Therefore, if the grip 2 is placed over the pen tip-side housing 11 from its rear end relative to the pen tip-side housing 11 and moved towards the pen tip, the grip 2 can move in a manner that covers the vicinity of the pen tip-side housing 11 while undergoing elastic deformation of both the inner cylindrical portion 21 and the outer cylindrical portion 22.

[0050] At this time, the grip 2 is in a state where the protrusion 21p of the inner cylindrical part 21 is engaged with the groove 11d of the connecting part 11a of the pen tip side housing 11, and the grip 2 is in a state where the position of the grip 2 relative to the pen tip side housing 11 is restricted in the circumferential direction centered on the axial direction.

[0051] Furthermore, if the annular protrusion 21r of the inner cylindrical portion 21 of the grip 2 abuts against the annular wall portion of the stepped portion 11c of the pen tip side housing 11, the grip 2 becomes locked in a state where further movement relative to the axial direction of the pen tip side housing 11 is impossible. In this state where the grip 2 is locked in the pen tip side housing 11, the circumferential positional restriction achieved by the aforementioned protrusion 21p engaging with the groove 11d results in the opening 2H of the grip 2 being directly above the opening 11H of the pen tip side housing 11 (see reference). Figure 1 (C)). At this time, the protrusion 21p of the inner cylindrical part 21 of the grip 2 also comes into contact with the annular wall of the stepped part 11c of the pen tip side shell 11.

[0052] In this case, when the handle 2 is assembled, a recess is formed at the opening 2H where the thickness of the handle 2 (the sum of the thickness of the inner cylindrical part 21 and the thickness of the outer cylindrical part 22) is created. The buttons 14b, 14c, and 14d of the operation part 14 of the side switch of the electronic pen 1 are located at the lower part corresponding to the thickness of the handle 2, making them difficult to operate.

[0053] In the example of the electronic pen 1, considering this, the operating part 14', which is the side switch when the grip 2 is attached, is provided with buttons 14b', 14c', and 14d' whose height is taken into account the thickness of the grip 2. Furthermore, in this example of the electronic pen 1, this operating part 14' is configured to be interchangeable with the operating part 14 when the grip 2 is attached. This structure is known, for example, as described in Patent Document WO2023 / 17725, and therefore its description is omitted here.

[0054] Therefore, in the electronic pen 1 of this example, even when the grip 2 is assembled, the operation of the buttons 14b', 14c', and 14d' of the operation unit 14' is not difficult to perform by replacing it with the side switch operation unit 14'.

[0055] After the grip 2 is assembled onto the tip-side housing 11, the lead-pulling hole 15a of the lead holder 15 is inserted into the rear end of the tip-side housing 11, and then the rear end housing 12 is screwed into the tip-side housing 11. Thus, the grip 2 is positioned such that the annular protrusion 21r and the convex portion 11p at the rear end of the inner cylinder 21 are clamped by the stepped portion 11c of the tip-side housing 11 and the annular end face 12c of the rear end housing 12.

[0056] Therefore, with the handle 2 assembled in a manner that covers the pen tip side housing 11 of the electronic pen 1's housing 10, it is locked relative to the electronic pen 1's housing 10 in a way that prevents it from moving in the axial direction. Furthermore, in this state, the handle 2 utilizes the elastic contraction force of the inner cylinder 21 with the gap 21s and the elastic force of the outer cylinder 22 made of rubber to tighten the electronic pen 1's housing 10, thus securing it firmly to the electronic pen 1's housing 10.

[0057] As described above, the grip 2 in the above embodiment has a dual structure formed by an inner cylindrical portion 21 and an outer cylindrical portion 22. The inner cylindrical portion 21 is made of an elastic material and has an axially oriented slit 21s. The outer cylindrical portion 22 is made of an elastomer (rubber in the above example). Therefore, assembling the grip 2 relative to the housing 10 of the electronic pen 1 is simplified. Furthermore, in the assembled state, the grip 2 is firmly secured to the housing 10 of the electronic pen 1 by the elastic contraction force of the inner cylindrical portion 21 (made of an elastic material) and the elastic contraction force of the outer cylindrical portion 22.

[0058] Furthermore, according to the above-described embodiment, the grip 2 has a circumferential positioning protrusion 21p on the rear end side of the inner cylindrical portion 21, which has the following effect: when the grip 2 is assembled to the housing 10 of the electronic pen 1 by aligning the protrusion 21p with the groove 11d of the pen tip side housing 11 of the housing 10 of the electronic pen 1, the opening 11H of the operation portion 14 of the existence side switch of the electronic pen 1 is automatically aligned with the opening 2H of the grip 2.

[0059] Furthermore, in the grip 2 of the above embodiment, an annular protrusion 21r and a convex portion 21p are formed at the rear end of the inner cylindrical portion 21. These annular protrusions 21r and convex portions 21p are configured to be held by the stepped portion 11c of the pen tip-side housing 11 and the annular end face 12c of the rear end-side housing 12. Therefore, when the grip 2 is assembled into the housing 10 of the electronic pen 1, the grip 2 is reliably locked relative to the housing 10 in a state where it cannot move in the axial direction.

[0060] It should be noted that, in order to limit the movement of the handle 2 in the axial direction of the housing 10 of the electronic pen 1, only the protrusion 21p is required, and the annular protrusion 21r may not be provided.

[0061] Furthermore, in the above embodiment, the gap 21s of the inner cylinder portion 21 is configured to communicate with the opening 21H corresponding to the operation portion 14 of the side switch, but this example is not limited to this one.

[0062] Figure 4 (A) shows the inner cylindrical portion 21A of another example of a grip 2A (not shown). In this example of the grip 2A, the outer cylindrical portion 22A (not shown) is constructed in the same manner as the outer cylindrical portion 22 of the grip 2 described above, and has an opening 22AH (not shown). Furthermore, in the inner cylindrical portion 21A of this example, as... Figure 4 As shown in (A), an opening 21AH is provided, which together with the opening 22HA of the outer cylindrical portion 22A forms an opening 2AH (not shown) for the handle 2A. A slit 21As in the axial direction is provided on the side peripheral surface that does not communicate with this opening 21AH. Furthermore, in this example, the inner cylindrical portion 21A, similar to the inner cylindrical portion 21 of the above embodiment, has an annular protrusion 21Ar and a convex portion 21Ap at its rear end.

[0063] in addition, Figure 4 (B) shows another example of the grip 2B (not shown) with an inner cylindrical portion 21B. In this example of the grip 2B, the outer cylindrical portion 22B (not shown) is constructed in the same manner as the outer cylindrical portion 22 of the grip 2 described above, and has an opening 22BH (not shown). Furthermore, in this example, the inner cylindrical portion 21B does not form an opening that, together with the opening 22BH of the outer cylindrical portion 22B, constitutes the opening 2BH (not shown) of the grip 2B. Instead, as Figure 4 As shown in (B), the slit 21Bs has a width w (the circumferential length of the slit centered on the axis) that is greater than or equal to the width of the opening 22BH of the outer cylinder 22B (the circumferential length of the opening 22BH centered on the axis).

[0064] In Figure 4 In the case of example (B), it is not necessary to form such a structure in the inner cylindrical portion 21B. Figure 3 The opening shown in (B) has the same shape and size as the opening 22BH of the outer cylinder 22B and the slit communicating with it, thus making the inner cylinder 21B easier to process.

[0065] In the inner cylindrical portion 21B of this example, as Figure 4 As shown in (B), similar to the inner cylindrical part 21 in the example above, it is provided with an annular protrusion 21Br for limiting the position of the handle 2B in the axial direction when it is assembled with the housing 10 of the electronic pen 1, and a protrusion 21Bp for aligning the operation part 14 of the side switch with the opening 2BH at its rear end.

[0066] [Another implementation method]

[0067] Figure 5 This is a diagram illustrating a grip 2C of another embodiment for use with the electronic pen 1. (See diagram) Figure 5 As shown in (A), the outer cylindrical portion 22C of the handle 2C in this embodiment is configured with the same shape as the outer cylindrical portion 22 in the example described above, and is configured to have an opening 22CH. However, the outer cylindrical portion 22C of this embodiment is made of a non-elastic material, which in this example is wood.

[0068] Furthermore, in the handle 2C of this embodiment, as... Figure 5 As shown in (B), the inner cylinder 21C is configured to be divided into two parts in the axial direction, consisting of a first inner cylinder 21C1 on the tip side and a second inner cylinder 21C2 on the rear end side. Figure 5 As shown in (B), slits 21C1s and slits 21C2s are formed in the first inner cylindrical portion 21C1 and the second inner cylindrical portion 21C2 along their respective axial directions over their entire length.

[0069] In this case, the axial length of the first inner tube portion 21C1 is less than or equal to the length from the end of the opening 22CH of the outer tube portion 22C on the tip side to the end of the outer tube portion 22C on the tip side. Furthermore, the axial length of the second inner tube portion 21C2 is less than or equal to the length between the end of the outer tube portion 22C on the rear end side and the end of the opening 22CH on the rear end side.

[0070] Furthermore, at the rear end of the second inner cylinder 21C2, an annular protrusion 21Cr for limiting the position of the handle 2C in the axial direction is formed in the same way as the inner cylinder 21 of the above embodiment, and a protrusion 21Cp for aligning the operation part 14 of the side switch with the opening 22CH of the outer cylinder 22C.

[0071] The first inner cylindrical portion 21C1 and the second inner cylindrical portion 21C2 of the inner cylindrical portion 21C constituting the handle 2C of this embodiment are made of elastic members, especially members that can elastically deform in the thickness direction and the circumferential direction, such as elastic rubber.

[0072] In this embodiment, the first inner cylindrical portion 21C1 is inserted into and fixed between the tip of the outer cylindrical portion 22C and the tip of the opening 22CH. Instead of fixing the entire outer peripheral surface of the first inner cylindrical portion 21C1 to the inner wall of the tip of the outer cylindrical portion 22C, the first inner cylindrical portion 21C1 is partially fixed to the tip of the outer cylindrical portion 22C in a manner that allows it to extend and retract in a circumferential direction centered on the axial direction.

[0073] Furthermore, the second inner cylindrical portion 21C2 is inserted and fixed between the rear end of the outer cylindrical portion 22C and the rear end of the opening 22CH. Similar to the first inner cylindrical portion 21C1, the second inner cylindrical portion 21C2 is partially fixed to the outer cylindrical portion 22C at a location further from the rear end of the opening 22CH, in a manner that allows it to extend and retract in a circumferential direction centered on the axial direction.

[0074] Therefore, in the handle 2C of this embodiment, the inner cylindrical portion 21C does not exist in the portion of the outer cylindrical portion 22C where the opening 22CH is formed. That is, it is not necessary to form the openings 21H, 21AH, 21BH in the inner cylindrical portion 21C as in the inner cylindrical portions 21, 21A, 21B of the above-described embodiments, and it is not necessary to align the openings between the outer cylindrical portion 22C and the inner cylindrical portion 21C.

[0075] However, in this case, the second inner cylinder 21C2 is inserted into and fixed inside the outer cylinder 22C with the circumferential position of the protrusion 21Cp relative to the opening 22CH of the outer cylinder 22C in a predetermined positional relationship. Thus, when the grip 2C is assembled from the rear end of the pen tip-side housing 11 of the electronic pen 1 in a cover-like manner, the protrusion 21Cp engages with the groove 11d of the connecting portion 11a of the pen tip-side housing 11, thereby aligning the opening 22CH of the outer cylinder 22C of the grip 2C to a position that automatically moves onto the operation portion 14 of the side switch of the electronic pen 1.

[0076] It should be noted that such alignment is not required during the insertion and fixation of the first inner cylindrical portion 21C1 into the outer cylindrical portion 22C. Furthermore, the gaps 21C1s of the first inner cylindrical portion 21C1 and the gaps 21C2 of the second inner cylindrical portion 21C2 do not need to be aligned in a straight line along the axial direction; the circumferential positional relationship between the two gaps centered on the axial direction can be arbitrary.

[0077] When the grip 2C of this embodiment is assembled to the electronic pen 1, the grip 2C moves from the rear end of the pen tip side housing 11 to the pen tip side by elastic displacement of the first inner cylinder portion 21C1 and the second inner cylinder portion 21C2 in the thickness and circumferential directions, thus covering the pen tip side housing 11. Furthermore, after assembly, the grip 2C is firmly locked relative to the pen tip side housing 11 by the restoring force of the elastic displacement of the first inner cylinder portion 21C1 and the second inner cylinder portion 21C2.

[0078] It should be noted that, in this embodiment, the inner tube portion 21C is composed of a first inner tube portion 21C1 that is closer to the pen tip side than the opening portion 22CH of the outer tube portion 22C and a second inner tube portion 21C2 that is closer to the rear end side than the opening portion 22CH of the outer tube portion 22C. However, it may also be composed of only the second inner tube portion 21C2 that is closer to the rear end side than the opening portion 22CH of the outer tube portion 22C.

[0079] [Another implementation method]

[0080] In the above embodiment, the electronic pen 1 has a structure with a side switch operation section 14. Therefore, the grips 2 and 2C have openings for exposing the side switch operation section 14 to the outside. However, there are also electronic pens that do not have a side switch operation section 14.

[0081] Figure 6 An example of such a 2D grip for an electronic pen is shown. Figure 6 (A) shows an example of the outer cylindrical portion 22D of the grip 2D. Figure 6 (B) shows the inner cylindrical portion 21D of the grip 2D in this example. For this... Figure 6 The outer cylindrical portion 22D and the inner cylindrical portion 21D of the example grip 2D are similar to... Figure 3 and Figure 4 Similarly, the outer cylindrical part 22D of the handles 2 and 2A shown are made of rubber, and the inner cylindrical part 21D is made of hard resin.

[0082] like Figure 6 As shown in (A), the outer cylindrical portion 22D of this example is constructed in the same manner as the outer cylindrical portion 22 of the embodiment described above, except that it lacks the opening for the operation of the side switch. Furthermore, as... Figure 6As shown in (B), in this example, the inner cylindrical portion 21D is configured to have a slit 21Ds extending over its entire length in the axial direction, and does not have an opening for the operation of the side switch. Furthermore, in this example of the inner cylindrical portion 21D, alignment of the opening for the operation of the side switch is not required, therefore the protrusions 21p and 21Ap of the inner cylindrical portions 21 and 21A of the grips 2 and 2A in the above-described embodiment are not provided. However, in this example, the inner cylindrical portion 21D is provided with an annular protrusion 21Dr for position restriction in the axial direction.

[0083] Furthermore, in the case of an electronic pen that does not have a side switch operation section in this example, it is not necessary to provide a groove 11d in the connecting part 11a of the pen tip side housing 11 of the electronic pen 1 that has a side switch operation section 14.

[0084] It should be noted that, Figure 6 Example of an electronic pen grip 2D without a side switch operating section Figure 3 and Figure 4 The handles 2 and 2A shown also have an outer cylindrical portion 22D made of rubber and an inner cylindrical portion 21D made of hard resin. However, the outer cylindrical portion 22D of the handle 2D can also be made to be the same as that used with... Figure 5 The outer cylindrical portion 22C of (A) is also made of wood, and the inner cylindrical portion 21D is used in the same way. Figure 5 The inner cylindrical portion 21C described in (B) is also made of elastic rubber. Alternatively, the inner cylindrical portion 21D may not be as described... Figure 6 The component shown in (B) is not a single component, but is configured as separate components as shown in (B). Figure 5 The first inner cylindrical portion 21C1 and the second inner cylindrical portion 21C2 shown in (B).

[0085] In addition, Figure 6 In the example, an annular protrusion 21Dr is provided at the rear end of the inner cylindrical portion 21D to limit the position of the grip 2D mounted on the electronic pen in the axial direction. However, it is also possible to omit the annular protrusion 21Dr and instead provide a protrusion similar to the protrusions 21p, 21Ap, 21Bp, 21Cp, etc. In this case, the protrusion is made to have the same protrusion height as the annular protrusion 21Dr. Furthermore, multiple such protrusions can be provided at predetermined angles instead of a single one.

[0086] [Other implementation methods or variations]

[0087] In the electronic pen 1 of the above embodiment, the axial position of the grips 2, 2A, 2B, and 2C after they are assembled into the electronic pen 1 is restricted by using the annular end face of the stepped portion 11c of the pen tip side housing 11 and the annular end face 12c of the rear end housing 12 to clamp the protrusions 21p, 21Ap, 21Bp, 21Cp and the annular protrusions 21r, 21Ar, 21Br, and 21Cr. Therefore, when the grips 2, 2A, 2B, and 2C are assembled and when the grips 2, 2A, 2B, and 2C are not assembled, the difference in the axial length of the electronic pen 1 is the thickness of the protrusions 21p, 21Ap, 21Bp, 21Cp and the annular protrusions 21r, 21Ar, 21Br, and 21Cr.

[0088] To avoid this situation, in the electronic pen 1 without the grips 2, 2A, 2B, and 2C attached, as follows: Figure 7 As shown in (A) and (B), it can also be configured such that a decorative ring 16 having a width equal to the thickness of the protrusions 21p, 21Ap, 21Bp, 21Cp and the annular protrusions 21r, 21Ar, 21Br, 21Cr is held between the annular end face of the stepped portion 11c of the tip-side housing 11 and the annular end face 12c of the rear-side housing 12. This decorative ring 16 is removed from the electronic pen 1 when the grips 2 and 2C are assembled.

[0089] It should be noted that, Figure 7 The example also applies to assembly. Figure 6 The case shown is an electronic pen with a grip 2D that does not have a side switch operation section 14.

[0090] Furthermore, in the above description of the embodiments, for the electronic pen 1, the pen tip side housing 11 and the rear end side housing 12 are screwed together (engaged), but the engagement method is of course not limited to this example. For example, an annular protrusion or groove may be provided on the engagement portion 11a on the rear end side of the pen tip side housing 11 instead of the threaded portion 11b, and an annular groove or protrusion that engages with the annular protrusion or groove of the engagement portion 11a may be provided on the inner wall surface of the rear end side housing 12. In this case, by pressing the rear-end housing 12 into the connecting portion 11a on the rear end side of the pen tip housing 11, the annular groove or protrusion on the inner wall surface of the rear-end housing 12 engages with the annular protrusion or groove of the connecting portion 11a. This allows the pen tip housing 11 and the rear-end housing 12 to be joined, clamping the protrusions 21p, 21Ap, 21Bp, 21Cp and the annular protrusions 21r, 21Ar, 21Br, 21Cr of the grips 2, 2A, 2B, 2C. In this case, the electronic pen is also equipped with... Figure 7 The decorative ring 16 shown.

[0091] Explanation of reference numerals in the attached figures

[0092] 1…Electronic pen, 2, 2C, 2D…Grip, 2H…Opening, 10…Pen housing, 11…Pen tip side housing, 11a…Connecting part, 11b…Threaded part, 11c…Stepped part, 11d…Groove, 12…Rear end housing, 12b…Threaded part, 12c…Annular end face, 13…Core, 14…Side switch operating part, 16…Decorative ring, 21, 21A, 21B, 21 C, 21D…inner cylindrical part, 22, 22C, 22D…outer cylindrical part, 21H, 21AH, 21BH, 21CH…opening part, 22H, 22AH, 22CH…opening part, 21p, 21Ap, 21Bp, 21Cp…protrusion, 21r, 21Ar, 21Br, 21Cr…annular protrusion, 21s, 21As, 21Bs, 21Cs…gap.

Claims

1. A grip for an electronic pen, characterized in that it covers the side periphery of a cylindrical housing of the electronic pen, wherein... The handle is cylindrical, and the cross-sectional shape of the hollow portion of the cylindrical body corresponds to the cross-sectional shape of the electronic pen's casing. The cylindrical body has a dual structure consisting of an inner cylindrical portion and an outer cylindrical portion. The inner cylindrical portion has an inner wall portion that contacts the side circumferential surface of the electronic pen's housing, and the outer cylindrical portion covers the inner cylindrical portion. The inner cylindrical portion has an axially oriented slit and is made of an elastic material.

2. The grip for an electronic pen according to claim 1, characterized in that, The outer cylindrical portion is made of an elastomer, and the inner cylindrical portion is made of an elastic resin.

3. The grip for an electronic pen according to claim 1, characterized in that, The outer cylindrical section is made of wood.

4. The grip for an electronic pen according to claim 1, characterized in that, The electronic pen has a side switch operating part on the side circumferential surface of the cylindrical housing. The outer cylindrical portion and the inner cylindrical portion have openings that expose the operating part of the side switch to the outside.

5. The grip for an electronic pen according to claim 4, characterized in that, The inner cylindrical portion has a protrusion that protrudes inward in a direction intersecting the axial direction. The protrusion is configured to align the opening with the operating part of the side switch when it is fitted onto the housing covering the electronic pen.

6. The grip for an electronic pen according to claim 4, characterized in that, The gap in the inner cylinder is connected to the opening in the inner cylinder.

7. The grip for an electronic pen according to claim 1, characterized in that, The gap in the inner cylinder is formed over the entire length of the inner cylinder in the axial direction.

8. The grip for an electronic pen according to claim 1, characterized in that, The inner cylindrical portion has a protrusion at its rear end that protrudes inward in a direction intersecting the axial direction. The protrusion is configured to serve as a positioning element relative to the axial direction of the electronic pen's housing when it is fitted onto the housing.

9. The grip for an electronic pen according to claim 1, characterized in that, The outer cylindrical portion is longer in the axial direction than the inner cylindrical portion, and the outer cylindrical portion is configured to cover the entire inner cylindrical portion.

10. An electronic pen having a pen housing and a grip, the pen housing being detachably joined in the axial direction by a first housing including a tip side and a second housing forming a rear end side opposite to the tip side, the grip having a grip detachably mounted relative to the first housing of the pen housing, characterized in that, The handle is configured as a cylindrical body, and the shape of the cross-section of the hollow portion of the cylindrical body corresponds to the outer shape of the cross-section of the first shell of the pen housing. The cylindrical body has a dual structure consisting of an inner cylindrical portion and an outer cylindrical portion. The inner cylindrical portion has an inner wall portion that contacts the side peripheral surface of the first housing of the pen housing. The outer cylindrical portion covers the inner cylindrical portion. Furthermore, the inner cylindrical portion has an axially oriented slit and is made of elastic resin.

11. The electronic pen according to claim 10, characterized in that, The inner cylindrical portion of the handle has a protrusion at its rear end in the axial direction that protrudes inward toward the inner cylindrical portion in a direction intersecting the axial direction. When the first housing and the second housing are combined with the grip assembled in the first housing state, the protrusion is clamped by the rear end portion of the first housing and the pen tip end of the second housing, thereby positioning the grip relative to the axial direction of the pen housing.

12. The electronic pen according to claim 11, characterized in that, The electronic pen has a side switch operating part on the side circumferential surface of the cylindrical housing. The outer and inner cylindrical portions of the grip have openings that expose the operating portion of the side switch to the outside.

13. The electronic pen according to claim 12, characterized in that, The inner cylindrical portion of the handle has a protrusion that protrudes inward toward the inner side of the inner cylindrical portion at a position relative to the opening in a specific circumferential direction centered on the axial direction. This protrusion is located at the rear end of the inner cylindrical portion in the axial direction. The first housing has a coupling insertion portion that is inserted into the second housing when the first housing and the second housing are coupled in the axial direction. A groove corresponding to the protrusion is formed at a position on the operating part of the connecting insertion part that is in the same positional relationship as the specific positional relationship in the circumferential direction centered on the axis direction as the operating part of the side switch. When the handle is assembled into the first housing, the protrusion engages with the groove, thereby aligning the opening onto the operating part of the side switch.

14. The electronic pen according to claim 13, characterized in that, The first housing and the second housing are joined by a screw thread.

15. The electronic pen according to claim 10, characterized in that, The outer cylindrical portion of the handle is made of an elastomer, and the inner cylindrical portion is made of hard resin.

16. The electronic pen according to claim 10, characterized in that, The outer cylindrical portion of the handle is made of wood.

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