Sheath and writing pen

Abstract

The utility model provides a sheath and a writing pen, and relates to the technical field of office supplies. The protective sleeve comprises a body and a supporting part, a mounting through hole is formed in the body in the axial direction of the body, and the mounting through hole is used for mounting a pen shell; the supporting parts are arranged on the outer wall of the body and comprise the first supporting part and the second supporting part, the first supporting part and the second supporting part are arranged in the circumferential direction of the body, the first supporting part is used for supporting the thumb and / or the index finger, and the second supporting part is used for supporting the middle finger; in the radial direction of the body, the maximum thickness of the second supporting part is larger than that of the first supporting part. Due to the fact that the maximum thickness of the second supporting part is large, softer support can be provided for the middle finger, and the comfort of a user for holding the pen is improved. And meanwhile, the thickness of the first supporting part is relatively small, so that the material cost can be saved.

Description

Technical Field

[0001] The utility model generally relates to the technical field of office supplies, and in particular to a protective sheath and a writing pen. Background Art

[0002] Since children have poor fine motor skills, they may hold the pen incorrectly, which may cause writing fatigue, or block their vision or cause myopia due to the low pen holding position. In addition, existing sheaths are generally made of soft materials and have a consistent thickness, but the middle finger has the greatest force during actual writing, which may cause the middle finger to become fatigued or even deformed when writing for a long time. Utility Model Content

[0003] The utility model provides a protective sheath and a writing pen, which realize the function of dividing finger force into different zones and can relieve the pressure on the middle finger.

[0004] According to a first aspect of the utility model, there is provided a sheath comprising:

[0005] A body, wherein the body is provided with a mounting through hole along the axial direction of the body, and the mounting through hole is used for mounting a pen housing;

[0006] A support portion, arranged on the outer wall of the body, the support portion comprises a first support portion and a second support portion, the first support portion and the second support portion are arranged along the circumference of the body, the first support portion is used to support the thumb and / or index finger, and the second support portion is used to support the middle finger;

[0007] Wherein, along the radial direction of the body, the maximum thickness of the second support portion is greater than the maximum thickness of the first support portion.

[0008] In some embodiments, the support portion includes a protrusion, the body is provided with a groove at a position corresponding to the support portion, and the protrusion is disposed in the groove.

[0009] In some embodiments, the groove is extended along the axial direction of the body;

[0010] And / or, the shape of the groove is at least one of rectangular, elliptical, and waist-shaped.

[0011] In some embodiments, the protrusion of the first supporting portion includes a first protrusion and a second protrusion, a limiting groove is provided in the groove, and along the axial direction of the main body, the first protrusion and the second protrusion are respectively provided at two ends of the limiting groove, and a gap is provided between the first protrusion and the second protrusion.

[0012] In some embodiments, the first protrusion is an arc-shaped structure;

[0013] And / or, the second protrusion is an arc-shaped structure;

[0014] And / or, the bending direction of the first protrusion is opposite to the bending direction of the second protrusion.

[0015] In some embodiments, there are multiple first protrusions, and the multiple first protrusions are arranged along the axial direction of the body, and the arc lengths of the multiple first protrusions gradually increase in a direction away from the second protrusion;

[0016] And / or, there are multiple second protrusions, and the multiple second protrusions are arranged along the axial direction of the body, and the arc lengths of the multiple second protrusions gradually increase in the direction away from the first protrusion.

[0017] In some embodiments, along the radial direction of the body, the protrusion of the second support portion penetrates the body;

[0018] And / or, the protrusion of the second supporting portion is extended along the axial direction of the body;

[0019] And / or, the protrusion of the second supporting portion has a shape of at least one of a rectangle, an ellipse, and a waist.

[0020] In some embodiments, the body is made of a hard material;

[0021] And / or, the protrusion is made of soft material.

[0022] According to the second aspect of the utility model, an embodiment of the utility model also provides a writing pen, including a pen case, a pen core, a pen head and the above-mentioned sheath, the pen head is arranged at the end of the pen case, the pen core is passed through the pen case and the pen head, and the pen case is passed through the installation through hole of the sheath.

[0023] In some embodiments, the pen case includes a pen shaft and a pen neck, one end of the pen neck is connected to the pen shaft, and the other end is detachably connected to the pen tip, the sheath is sleeved on the outside of the pen neck and abuts against the pen shaft, the pen neck is provided with a limiting hole, and a limiting boss is provided on the side of the second support portion facing the pen shaft corresponding to the limiting hole, and the limiting boss is passed through the limiting hole.

[0024] An embodiment of the utility model has the following advantages or beneficial effects:

[0025] The sheath and writing pen provided in this embodiment have a first support portion that provides a support position for the thumb and / or index finger, and a second support portion that provides a support position for the middle finger. The first support portion and the second support portion are arranged along the circumference of the body, so that the thumb, index finger and middle finger are arranged around the body, and the finger force partitioning function is realized when the user holds the pen to write, which is used to correct the user's pen holding posture and play a role in preventing myopia. Since the maximum thickness of the second support portion is relatively large, it can provide a softer support for the middle finger, improving the comfort of the user holding the pen. At the same time, the thickness of the first support portion is relatively small, which can save material costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to better understand the utility model, reference may be made to the embodiments shown in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the utility model. In addition, related elements or components may have different settings as known in the art. In addition, in the drawings, the same reference numerals represent the same or similar components in each of the drawings. By describing its example embodiments in detail with reference to the drawings, the above and other features and advantages of the utility model will become more apparent.

[0027] in:

[0028] Figure 1 The figure shows the explosion of a writing pen according to an embodiment of the utility model. Figure 1 ;

[0029] Figure 2 The figure shows the explosion of a writing pen according to an embodiment of the utility model. Figure 2 ;

[0030] Figure 3 The structure of the writing pen of one embodiment of the utility model is shown. Figure 1 ;

[0031] Figure 4 Shown is a cross-sectional view of a writing pen according to an embodiment of the utility model;

[0032] Figure 5 The structure of the writing pen of one embodiment of the utility model is shown. Figure 2 ;

[0033] Figure 6 The figure shows the matching diagram of the pen neck and the sheath in the writing pen of one embodiment of the utility model;

[0034] Figure 7 Shown is a schematic diagram of the matching of a sheath according to an embodiment of the utility model;

[0035] Figure 8Shown is a partial enlarged view of a writing pen display sheath according to an embodiment of the utility model.

[0036] The reference numerals are described as follows:

[0037] 100, sheath; 200, refill; 300, pen case; 301, pen holder; 302, pen neck; 3021, limiting hole; 400, pen tip; 500, press head; 600, mounting shaft; 700, pen clip;

[0038] 1. Main body; 2. Support part;

[0039] 10. Installation through hole; 11. Groove; 12. Limiting groove;

[0040] 20, protruding portion; 21, first supporting portion; 22, second supporting portion; 221, limiting boss;

[0041] 201, first protruding portion; 202, second protruding portion;

[0042] 211, first sub-unit; 212, second sub-unit. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the example embodiments of the utility model to clearly and completely describe the technical solutions in the example embodiments of the utility model. The example embodiments described herein are only for illustrative purposes and are not intended to limit the scope of protection of the utility model. Therefore, it should be understood that various modifications and changes can be made to the example embodiments without departing from the scope of protection of the utility model.

[0044] In the description of the present invention, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; the term "plurality" refers to two or more; the term "and / or" includes any and all combinations of one or more associated listed items. In particular, reference to "the / the" object or "an" object is also intended to indicate one of a possible plurality of such objects.

[0045] Unless otherwise specified or explained, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0046] Further, in the description of the present invention, it should be understood that the directional words such as "upper", "lower", "inner", "outer" and the like described in the exemplary embodiments of the present invention are described at the angles shown in the accompanying drawings and should not be understood as limitations on the exemplary embodiments of the present invention. It should also be understood that, in the context, when it is mentioned that an element or feature is connected to another element (one or more) "upper", "lower", or "inner", "outer", it can not only be directly connected to the other (one or more) elements "upper", "lower", or "inner", "outer", but can also be indirectly connected to the other (one or more) elements "upper", "lower", "inner", "outer" through an intermediate element.

[0047] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0048] This embodiment provides a writing pen, such as Figure 1-Figure 2 As shown, the writing pen includes a pen case 300, a pen core 200, a pen head 400 and a sheath 100. The pen head 400 is arranged at the end of the pen case 300, which has the effect of lowering the center of gravity of the entire writing pen. The pen core 200 is inserted into the pen case 300 and the pen head 400, and the pen case 300 is inserted into the sheath 100. The sheath 100 is sleeved on the outside of the pen case 300, and the sheath 100 plays a role in protecting the pen case 300. The sheath 100 is arranged at one end of the pen case 300 close to the pen head 400, that is, the sheath 100 is arranged close to the pen head 400. When the user writes, the finger can be placed on the sheath 100, which improves the comfort of writing.

[0049] In one embodiment, the pen case 300 includes a pen shaft 301 and a pen neck 302. Both the pen shaft 301 and the pen neck 302 are hollow structures. One end of the pen neck 302 is connected to the pen shaft 301, and the other end is detachably connected to the pen head 400. The sheath 100 is sleeved on the outside of the pen neck 302 and abuts against the pen shaft 301.

[0050] Specifically, the pen holder 301 and the pen neck 302 are split structures, the pen holder 301 serves as an extension rod, and the pen neck 302 is used to install the sheath 100. One end of the pen neck 302 and the pen holder 301, and the other end of the pen neck 302 and the pen head 400 can be detachably connected by threaded connection or clamping, so as to facilitate the installation and replacement of the pen core 200. For example, one end of the pen neck 302 and the pen holder 301 is provided with a clamping block, and the other end is provided with a clamping slot, and the clamping block is clamped in the clamping slot. The other end of the pen neck 302 is provided with an external thread, and the pen head 400 is provided with an internal thread, and the external thread and the internal thread are threadedly connected.

[0051] Among them, the end of the pen head 400 close to the pen neck 302 is also provided with an anti-skid portion, and the protective portion can be specifically selected as vertical stripes. When the user twists the pen head 400, the protective portion can increase the friction between the pen head 400 and the user's finger, play an anti-skid role, and facilitate the user to replace the pen core 200. Specifically, a vertical stripe texture can be set on the upper half of the pen head 400 to form vertical stripes, which has a simple process and a relatively low production cost.

[0052] In one embodiment, Figure 1-Figure 5 As shown, the writing pen further includes a pressing head 500 and a mounting shaft 600. The mounting shaft 600 is disposed in the pen holder 301. One end of the mounting shaft 600 abuts against the pen core 200, and the other end is passed through the pen holder 301 and connected to the pressing head 500. The pressing head 500 is a hollow cylindrical structure with one end open. The open end of the pressing head 500 is sleeved on the outside of the mounting shaft 600. When the user presses the pressing head 500, the pen core 200 moves in a direction close to the pen head 400 until the tip of the pen core 200 is exposed outside the pen head 400 for the user to write. When the user presses the pressing head 500 again, the pen core 200 moves in a direction away from the pen head 400 until the tip of the pen core 200 retracts into the pen head 400, thereby protecting the pen core 200.

[0053] In one embodiment, the writing pen further includes a reset member, which is sleeved on the outside of the pen core 200 , disposed between the pen core 200 and the pen head 400 , or disposed between the pen core 200 and the mounting shaft 600 , for resetting the pen core 200 .

[0054] In one embodiment, Figure 1-Figure 5 As shown, the writing pen also includes a pen clip 700, which is arranged on the pen holder 301 to prevent the writing pen from rolling off the desktop and can also be convenient for users to hang it on books or clothes. The pen clip 700 and the pen holder 301 are assembled through a T-slot and a mounting block.

[0055] The material of the existing sheath 100 is relatively soft and is used to relieve writing pressure. However, due to the poor fine motor skills of children, they may have an incorrect pen-holding posture, which may easily cause writing fatigue when writing, or block their vision or cause myopia due to the low pen-holding position.

[0056] To solve this problem, Figure 6 As shown, this embodiment provides a protective sleeve 100, which includes a body 1, and the body 1 is provided with a mounting through hole 10 along the axial direction of the body 1, and the mounting through hole 10 is used to mount the pen housing 300.

[0057] The body 1 is a hollow structure, and the body 1 is provided with a mounting through hole 10 along the axial direction of the body 1. The pen case 300 is passed through the mounting through hole 10 of the body 1, so that the sheath 100 is sleeved on the outside of the pen case 300, so as to realize the installation between the pen neck 302 of the pen case 300 and the sheath 100. Specifically, the body 1 is made of a hard material, such as hard plastic, and the structural strength of the body 1 is relatively large, which prolongs the service life. The body 1 can be formed by an injection molding process, and specifically a two-color mold process can be adopted, which is simple in process and relatively low in production cost.

[0058] like Figure 6-Figure 7 As shown, the sheath 100 also includes a support portion 2, which is arranged on the outer wall of the main body 1. The support portion 2 includes a first support portion 21 and a second support portion 22. The first support portion 21 and the second support portion 22 are arranged along the circumference of the main body 1. The first support portion 21 is used to support the thumb and / or index finger, and the second support portion 22 is used to support the middle finger.

[0059] The protective sheath 100 provided in this embodiment has a first support portion 21 that provides a support position for the thumb and / or index finger, and a second support portion 22 that provides a support position for the middle finger. The first support portion 21 and the second support portion 22 are arranged along the circumference of the main body 1, so that the thumb, index finger and middle finger are arranged around the main body 1, and a finger force partitioning function is realized when the user holds the pen to write, which is used to correct the user's pen-holding posture and play a role in preventing myopia.

[0060] Generally, the correct pen-holding posture is to first place the body 1 between the thumb, index finger and middle finger, with the index finger in front, the thumb at the left back, and the middle finger at the lower right. The middle finger has the greatest strength when holding the pen. If the thickness of the sheath 100 is uniform, the middle finger will easily become fatigued or even deformed when writing for a long time.

[0061] To solve this problem, Figure 6-Figure 8 As shown, in the sheath 100 provided in this embodiment, along the radial direction of the body 1 , the maximum thickness of the second support portion 22 is greater than the maximum thickness of the first support portion 21 .

[0062] Since the maximum thickness of the second support part 22 is relatively large, a softer support can be provided for the middle finger, thereby improving the comfort of the user holding the pen. Meanwhile, the thickness of the first support part 21 is relatively small, thus saving material costs.

[0063] In one embodiment, the first supporting portion 21 includes a first sub-portion 211 and a second sub-portion 212 which are spaced apart from each other. The first sub-portion 211, the second sub-portion 212 and the second supporting portion 22 are arranged along the circumference of the body 1. The first sub-portion 211 is used to support the thumb, and the second sub-portion 212 is used to support the index finger.

[0064] In this way, the first support portion 21 is divided into two partitions, the first sub-portion 211 and the second sub-portion 212, which correspond to the thumb and index finger respectively, and are used to limit the positions of the thumb and index finger of the user when holding the pen. When the user holds the pen to write, the sheath 100 realizes the zoning function of the thumb and index finger, further improving the effect of correcting the pen-holding posture.

[0065] Specifically, Figure 6-Figure 8 As shown, the support portion 2 includes a protruding portion 20, that is, the first support portion 21 and the second support portion 22 both limit the user's fingers through the protruding portion 20, so as to correct the user's writing pen-holding posture.

[0066] The protrusion 20 is made of a soft material, for example, the protrusion 20 can be made of rubber. The protrusion 20 with a relatively soft texture can relieve the pressure on the fingers, reduce the fatigue of the fingers, and improve the user's comfort in holding the pen.

[0067] If the protrusion 20 is directly protruded from the outer wall of the body 1, the diameter of the entire sheath 100 will be relatively large. For younger users, the fingers of children cannot hold the relatively thick body 1, which affects the use experience.

[0068] To solve this problem, Figure 6-Figure 8 As shown, the main body 1 provided in this embodiment is provided with a groove 11 at a position corresponding to the support portion 2 , and the protrusion 20 is arranged in the groove 11 .

[0069] In this way, the lower half of the protrusion 20 sinks into the groove 11, and the upper half of the protrusion 20 protrudes from the body 1 or is flush with the body 1, reducing the height of the protrusion 20 protruding from the body 1 and the overall diameter of the sheath 100, making it easier for users to hold it and improving the usability.

[0070] The groove 11 is extended along the axial direction of the body 1 .

[0071] When the user is writing, the first joint of the finger at the tip needs to contact the sheath 100, and the first joint extends approximately along the axial direction of the main body 1. By extending the groove 11 along the axial direction of the main body 1, the extension direction of the groove 11 is approximately consistent with the contact area between the finger and the sheath 100, thereby further realizing the finger partitioning function of the sheath 100 and improving the effect of correcting the pen-holding posture.

[0072] Exemplarily, the shape of the groove 11 is at least one of a rectangle, an ellipse, and a waist shape. For example, the groove 11 provided in this embodiment is specifically approximately an ellipse, which is aesthetically pleasing, and the shape of the groove 11 matches the contact range of the finger holding the pen, and the feel of use is good. Of course, the shape of the groove 11 can also be adjusted according to actual use needs. For example, the upper and lower widths of the groove 11 are not exactly the same, and the width of the upper half of the groove 11 is smaller than the width of the lower half, so that the groove 11 is similar to a water drop-shaped structure.

[0073] Among them, a limiting groove 12 is provided in the groove 11, that is, the groove bottom of the groove 11 is chamfered to form the limiting groove 12, which further increases the partition range, and can further reduce the height of the protrusion 20 protruding from the outer wall, and reduce the overall occupied volume of the sheath 100. The shape of the limiting groove 12 is at least one of a rectangle, an ellipse, and a waist shape, and the shape of the limiting groove 12 matches the shape of the groove 11 as much as possible.

[0074] It can be understood that the protrusion 20 of the first sub-section 211 and the second sub-section 212 in the first supporting portion 21 have the same structure and shape, and the only difference is the different setting positions and functions. The protrusion 20 of the first sub-section 211 is used to support the thumb, and the protrusion 20 of the second sub-section 212 is used to support the index finger.

[0075] Specifically, the protrusion 20 of the first support portion 21 includes a first protrusion 201 and a second protrusion 202. Along the axial direction of the body 1, the first protrusion 201 and the second protrusion 202 are respectively arranged at both ends of the limiting groove 12, and a gap is arranged between the first protrusion 201 and the second protrusion 202.

[0076] That is, the gap between the first protrusion 201 and the second protrusion 202 in the first sub-portion 211 is used to accommodate the thumb. The first protrusion 201 and the second protrusion 202 can not only prevent the thumb from slipping, but also serve as a finger support to better support the thumb and provide a comfortable pen grip. The gap between the first protrusion 201 and the second protrusion 202 in the second sub-portion 212 is used to accommodate the index finger. The first protrusion 201 and the second protrusion 202 can not only prevent the index finger from slipping, but also serve as a finger support to better support the index finger and provide a comfortable pen grip.

[0077] Exemplarily, the first protrusion 201 is an arc-shaped structure. Since the first protrusion 201 contacts the lower edge of the finger, the first protrusion 201 of the arc-shaped structure can better support the lower edge of the finger, so as to provide upward support for the finger, and the user can save effort when writing.

[0078] Exemplarily, the second protrusion 202 is an arc-shaped structure. Since the first protrusion 201 is in contact with the upper edge of the finger, the second protrusion 202 of the arc-shaped structure can limit the upper edge of the finger to avoid a large upward position deviation of the finger.

[0079] Furthermore, the bending direction of the first protrusion 201 is opposite to that of the second protrusion 202. In this way, the first protrusion 201 and the second protrusion 202 can be specifically the part of the ellipse along its long axis, which can achieve a semi-wrapping effect on the contact position between the finger and the sheath 100, further limit the placement position of the finger, and be used to correct the user's pen-holding posture.

[0080] In one embodiment, there are multiple first protrusions 201, which are arranged along the axial direction of the body 1, and the arc lengths of the multiple first protrusions 201 gradually increase in the direction away from the second protrusion 202. It can be understood that a first recessed groove is formed between two adjacent first protrusions 201.

[0081] For example, the number of the first protrusions 201 is three, and the three first protrusions 201 are arranged along the axial direction of the body 1. The first protrusions 201 form a multi-layer structure to increase the anti-slip area of ​​the lower edge of the finger. According to the length of the arc, the three first protrusions 201 can be specifically a first small arc, a first middle arc, and a first large arc. Since the length and thickness of the fingers of users of different age groups may be different, the first small arc can be used to support the lower edge of the fingers of younger children, the first middle arc can be used to support the lower edge of the fingers of teenagers, and the first large arc can be used to support the lower edge of the fingers of older adults, so as to meet the comfort requirements of different users.

[0082] In one embodiment, there are multiple second protrusions 202, which are arranged along the axial direction of the body 1, and the arc lengths of the multiple second protrusions 202 gradually increase in the direction away from the first protrusion 201. It can be understood that a second recessed groove is formed between two adjacent second protrusions 202.

[0083] For example, the number of the second protrusions 202 is three, and the three second protrusions 202 are arranged along the axial direction of the body 1. The second protrusions 202 form a multi-layer structure to increase the anti-slip area of ​​the upper edge of the finger. According to the size of the arc length, the three second protrusions 202 can be specifically a second small arc portion, a second middle arc portion, and a second large arc portion. Since the length and thickness of the fingers of users of different age groups may be different, the second small arc portion can be used to limit the upper edge of the fingers of younger children, the second middle arc portion can be used to limit the upper edge of the fingers of teenagers, and the second large arc portion can be used to limit the upper edge of the fingers of older adults, so as to meet the writing correction posture needs of different users.

[0084] In one embodiment, Figure 6-Figure 8 As shown, along the radial direction of the body 1 , the protruding portion 20 of the second supporting portion 22 penetrates the body 1 .

[0085] Compared with the protrusion 20 of the first support part 21 being arranged on the outer wall of the body 1, the protrusion 20 of the second support part 22 penetrates the body 1. When the first support part 21 and the second support part 22 protrude from the outer wall of the body 1 at the same height, since the second support part 22 also includes a part penetrating through the side arm of the body 1, the thickness of the protrusion 20 of the second support part 22 is greater than the thickness of the protrusion 20 of the first support part 21 along the radial direction of the body 1. Since the middle finger has the greatest strength when holding a pen, the thicker protrusion 20 can provide softer support for the middle finger, improve the user's comfort in holding the pen, and delay the writing fatigue of the middle finger.

[0086] In one embodiment, the protrusion 20 of the second supporting portion 22 is extended along the axial direction of the body 1 .

[0087] When the user is writing, the first joint of the middle finger needs to contact the sheath 100, and the first joint extends approximately along the axial direction of the main body 1. The protrusion 20 of the second support portion 22 is extended along the axial direction of the main body 1 so that the extension direction of the protrusion 20 is approximately consistent with the contact area between the middle finger and the sheath 100, thereby providing a suitable position for the middle finger and improving the effect of correcting the pen-holding posture.

[0088] In one embodiment, the protrusion 20 of the second support portion 22 has at least one of a rectangular shape, an elliptical shape, and a waist shape.

[0089] Exemplarily, the shape of the protrusion 20 of the second support portion 22 is at least one of a rectangle, an ellipse, and a waist shape. For example, the protrusion 20 of the second support portion 22 provided in this embodiment is specifically approximately an ellipse, which is aesthetically pleasing, and the shape of the protrusion 20 of the second support portion 22 matches the contact range of the finger holding the pen, and the feel of use is good. Of course, the shape of the protrusion 20 of the second support portion 22 can also be adjusted according to actual use needs. For example, the upper and lower widths of the protrusion 20 of the second support portion 22 are not exactly the same, and the width of the upper half of the protrusion 20 of the second support portion 22 is smaller than the width of the lower half, so that the protrusion 20 of the second support portion 22 is similar to a water drop-shaped structure.

[0090] In one embodiment, the pen neck 302 is provided with a limit hole 3021 (such as Figure 6 As shown), the second support portion 22 is provided with a limiting boss 221 (as shown) on one side of the pen holder 301 corresponding to the limiting hole 3021. Figure 8 As shown), the limiting boss 221 is penetrated in the limiting hole 3021. Among them, the limiting boss 221 and the second support portion 22 can be an integrally formed structure, which reduces the time of parts assembly and has a relatively low production cost.

[0091] In this way, the limiting boss 221 is inserted into the limiting hole 3021, so that the sheath 100 and the pen neck 302 can be limited, and the sheath 100 can be prevented from being greatly offset relative to the pen neck 302, thereby improving the installation stability. At the same time, since the protrusion 20 of the second support part 22 has the limiting boss 221 on the inner side of the pen neck 302, the overall thickness of the protrusion 20 and the limiting boss 221 can be further increased, which can provide greater support and comfort to the middle finger of the user when writing.

[0092] The protective cover 100 provided in this embodiment adopts a force partitioning structure to improve user experience and pen-holding comfort.

[0093] It should be noted that the embodiments of the present invention are shown in the drawings and described in this specification is only an example of the principle of the present invention. It should be clearly understood by those skilled in the art that the principle of the present invention is not limited to any details or any components of the device shown in the drawings or described in the specification.

[0094] It should be understood that the utility model does not limit its application to the detailed structure and arrangement of the components proposed in this specification. The utility model can have other embodiments and can be implemented and executed in a variety of ways. The aforementioned deformation forms and modified forms fall within the scope of the utility model. It should be understood that the utility model disclosed and defined in this specification extends to all alternative combinations of two or more individual features mentioned or evident in the text and / or the drawings. All these different combinations constitute multiple alternative aspects of the utility model. The embodiments described in this specification illustrate the best known methods for implementing the utility model and will enable those skilled in the art to utilize the utility model.

[0095] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variation, use, or adaptation of the present invention, which follows the general principles of the present invention and includes common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and example embodiments are to be considered as exemplary only, and the true scope and spirit of the present invention are indicated by the appended claims.

[0096] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of protection of the present invention is limited only by the appended claims.

Claims

1. A sheath, characterized in that: include: A body, wherein the body is provided with a mounting through hole along the axial direction of the body, and the mounting through hole is used for mounting a pen housing; A support portion, arranged on the outer wall of the body, the support portion comprises a first support portion and a second support portion, the first support portion and the second support portion are arranged along the circumference of the body, the first support portion is used to support the thumb and / or index finger, and the second support portion is used to support the middle finger; Wherein, along the radial direction of the body, the maximum thickness of the second support portion is greater than the maximum thickness of the first support portion.

2. The sheath according to claim 1, characterized in that The support portion includes a protruding portion, the body is provided with a groove at a position corresponding to the support portion, and the protruding portion is arranged in the groove.

3. The sheath according to claim 2, characterized in that: The groove is extended along the axial direction of the body; And / or, the shape of the groove is at least one of rectangular, elliptical, and waist-shaped.

4. The sheath according to claim 2, characterized in that The protrusion of the first supporting portion includes a first protrusion and a second protrusion. A limiting groove is arranged in the groove. Along the axial direction of the main body, the first protrusion and the second protrusion are respectively arranged at two ends of the limiting groove, and a gap is arranged between the first protrusion and the second protrusion.

5. The sheath according to claim 4, characterized in that The first protrusion is an arc-shaped structure; And / or, the second protrusion is an arc-shaped structure; And / or, the bending direction of the first protrusion is opposite to the bending direction of the second protrusion.

6. The sheath according to claim 5, characterized in that There are multiple first protrusions, and the multiple first protrusions are arranged along the axial direction of the body, and the arc lengths of the multiple first protrusions gradually increase in a direction away from the second protrusion; And / or, there are multiple second protrusions, and the multiple second protrusions are arranged along the axial direction of the body, and the arc lengths of the multiple second protrusions gradually increase in the direction away from the first protrusion.

7. The sheath according to claim 2, characterized in that Along the radial direction of the body, the protrusion of the second support portion penetrates the body; And / or, the protrusion of the second supporting portion is extended along the axial direction of the body; And / or, the protrusion of the second supporting portion has a shape of at least one of a rectangle, an ellipse, and a waist.

8. The sheath according to claim 2, characterized in that The body is made of hard material; And / or, the protrusion is made of soft material.

9. The sheath according to any one of claims 1 to 8, characterized in that: The first supporting portion includes a first sub-portion and a second sub-portion which are arranged at intervals. The first sub-portion, the second sub-portion and the second supporting portion are arranged along the circumference of the body. The first sub-portion is used to support the thumb, and the second sub-portion is used to support the index finger.

10. A writing pen, characterized in that: The invention comprises a pen shell, a pen core, a pen head and the protective cover according to any one of claims 1 to 9, wherein the pen head is arranged at the end of the pen shell, the pen core is passed through the pen shell and the pen head, and the pen shell is passed through the installation through hole of the protective cover.

11. The writing pen according to claim 10, characterized in that: The pen case includes a pen body and a pen neck, one end of the pen neck is connected to the pen body, and the other end is detachably connected to the pen head, the sheath is sleeved on the outside of the pen neck and abuts against the pen body, the pen neck is provided with a limiting hole, and a limiting boss is provided on the side of the second support portion facing the pen body corresponding to the limiting hole, and the limiting boss is penetrated through the limiting hole.

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