Pen cap assembly
By designing a movable ring and driving mechanism, the problem of loose or overly tight pencil caps was solved, enabling flexible movement and stable fixation of the cap between the front and rear ends of the pencil body, thus improving ease of use and durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-03-27
AI Technical Summary
Existing pencil caps are prone to loosening or becoming too tight, making them inconvenient to use and easy to lose. They also cannot move flexibly between the front and back of the pencil body, resulting in inconvenience and frequent replacements.
The design employs a first and second ring sleeve, which is driven by a device to move along the longitudinal direction of the pen body. Combined with an elastic fastening cylinder and a rotating cylinder, it achieves switching between high and low friction, ensuring that the pen sleeve is stably fixed or easily moved between the front and rear ends of the pen body.
It allows for flexible movement and stable fixation of the pen cap between the front and rear ends of the pen body, preventing the pen cap from being lost and improving ease of use and durability.
Smart Images
Figure CN224044937U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to a pencil sleeve, in particular a pencil sleeve assembly that can move along the longitudinal direction of the pencil body. BACKGROUND
[0002] A pencil is a widely used stationery. After the pencil is sharpened at the front end, a pencil sleeve is usually configured to fix the front end. The pencil sleeve can cover the exposed tip of the pencil lead to prevent the pencil lead from being broken or contaminating the inside of the pencil box or stationery bag. The specific structure is shown in Figure 1 The pencil has a longitudinal pencil body 10, and a pencil sleeve 20 at the front end. The pencil sleeve 20 includes a protective sleeve 22 and a fixed ring 21 that is fixed to the pencil body at the front end by friction. The fixed ring 21 can be made of rubber or other elastic materials, or can be made of plastic with relatively weak elasticity, as long as it can provide appropriate friction with the pencil body 10. Figure 1 The traditional pencil and pencil sleeve shown in the figure need to be first pulled off from the pencil body 10 and then fitted to the rear end of the pencil body 10 in use. In actual use, due to processing tolerances and material wear and deformation, the friction between the fixed ring 21 and the pencil body will change, resulting in uncontrollable tightness between the fixed ring 21 and the pencil body. If it is too loose, the pencil sleeve 20 will fall off, and if it is too tight, it will be difficult to fit or remove the pencil sleeve to the pencil body, which is not convenient to use. In addition, the structure of the pencil sleeve and the pencil body having two separate components is prone to the pencil sleeve being lost after being removed from the pencil body without being fitted to the rear end of the pencil body in time, which requires frequent purchase of new pencil sleeves. In addition to pencils, other pens such as fountain pens, fountain pens, and other pens that require a pencil sleeve also need to solve the problem of easy loss of the pencil sleeve. SUMMARY
[0003] The utility model provides a pencil sleeve assembly for protecting the pencil lead at the front end of the pencil body, which comprises a first ring sleeve and a second ring sleeve, the diameters of the first ring sleeve and the second ring sleeve are greater than the diameter of the pencil body, the first ring sleeve comprises a protective sleeve extending forward to protect the pencil lead at the front end of the pencil body, the front end of the protective sleeve has an opening, so that the pencil body can pass through the opening, an elastic fastening cylinder is fixed at the inner walls of the first ring sleeve and the second ring sleeve at both ends, the outer sides of the first ring sleeve and the second ring sleeve comprise a driving device, the driving device can be driven by fingers to make the first ring sleeve and the second ring sleeve move relative to each other along the longitudinal direction of the pencil body, the elastic fastening cylinder deforms correspondingly, and the friction between the elastic fastening cylinder and the outer side wall of the pencil body is adjustable.
[0004] The driving device of the utility model can further comprise a rotating cylinder located outside the first ring sleeve and the second ring sleeve, wherein two kinds of matching grooves and protrusions are respectively arranged between the inner wall of the rotating cylinder and the outer wall of the first ring sleeve and the second ring sleeve, wherein the first kind of groove is a spiral groove, and the second kind of groove is an annular groove.
[0005] The utility model discloses a drive arrangement, including deformation drive part, deformation drive part is located first ring cover and second ring cover outside and two ends are connected to first ring cover and second ring cover respectively, first ring cover and second ring cover can be pressed to each other away by deformation drive part. Deformation drive part has high friction resistance between elastic fastening cylinder and pencil body in initial state, when deformation drive part is pressed, elastic fastening cylinder and pencil body have low friction resistance. BRIEF DESCRIPTION OF DRAWINGS
[0006] In order to more clearly illustrate the technical scheme of the present application, the following will be briefly introduced the drawings needed to be used in the description, obviously, the drawings in the following description is one embodiment of the present application, for the ordinary skilled in the art, without creative labor, can also obtain other drawings according to these drawings:
[0007] Figure 1 It is the existing technology pencil and pen cover combination schematic diagram;
[0008] Figure 2a It is the first pen cover assembly first state schematic diagram of the utility model;
[0009] Figure 2b It is the first pen cover assembly second state schematic diagram of the utility model;
[0010] Figure 3a It is the second pen cover assembly first state schematic diagram of the utility model;
[0011] Figure 3b It is the second pen cover assembly second state schematic diagram of the utility model. DETAILED DESCRIPTION
[0012] The technical scheme in the embodiments of the utility model will be clearly and completely described in the embodiments of the utility model in combination with the drawings, obviously, the described embodiments only are a part of the embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the ordinary skilled in the art without creative labor are within the scope of the present application.
[0013] As Figure 2aAs shown, the utility model provides a pencil and corresponding pencil sleeve assembly structure, wherein the pencil sleeve assembly includes a first ring sleeve 214 and a second ring sleeve 212, wherein the first ring sleeve 214 has a threaded groove 142 on the outer surface, and the second ring sleeve has an annular groove on the outer surface. At the outer side of the first ring sleeve and the second ring sleeve, there is a rotating cylinder 210, the inner wall of the rotating cylinder 210 has a convex thread 141 matched with the thread at the first end, and has an annular convex or other convex that can slide in the annular groove at the second end. The utility model pencil sleeve further includes an elastic fastening sleeve 216, the first end of the elastic fastening sleeve is fixed to the inner wall of the first ring sleeve 214, and the second end of the elastic fastening sleeve 216 is fixed to the inner wall of the second ring sleeve 212. Wherein the elastic fastening sleeve 216 can be connected to the first ring sleeve 214 or the second ring sleeve 212 through a connecting part 213, and the connecting part 213 can be integrated with the first ring sleeve and the second ring sleeve or assembled. The elastic fastening sleeve 216 can be made of rubber elastic material, and a certain amplitude of expansion and deformation can realize the purpose of the utility model. A protective sleeve 122 extending to the front end can be further arranged on the first ring sleeve 214, and the front end of the protective sleeve includes an opening, and the diameter of the opening needs to be greater than the diameter of the pencil body. The length of the protective sleeve 122 can be set so that when the elastic fastening sleeve 216 is fixed to the front end of the pencil body 10, the front end of the protective sleeve 122 can cover the tip of the lead, preventing the lead from colliding or rubbing with external materials. Wherein the protective sleeve 122 can also be integrated with the first ring sleeve 214 as the same part.
[0014] As Figure 2a shown, the rotating cylinder 210 can be driven to rotate by the user's fingers, and the second ring sleeve 212 with the annular groove will not move along the longitudinal direction of the pencil body during the rotation process, and the first ring sleeve 214 will be driven to move forward and backward along the longitudinal direction of the pencil body by the spiral groove. When the rotating cylinder 210 has a first rotating position, the first ring sleeve 214 and the second ring sleeve 212 have a first distance D1, and the distance of the connecting part 213 located on the first ring sleeve 214 and the second ring sleeve 212 is less than the length of the elastic fastening cylinder 216, so that a part of the elastic fastening cylinder 216 is driven to protrude inward, thereby tightly abutting the outer wall of the pencil body 10, generating a large friction force. Wherein the smaller D1 is, the greater the area and relative pressure of the elastic fastening cylinder 216 abutting the outer wall of the pencil body, and the greater the friction force, so that the pencil sleeve assembly (214, 212, 216, 210) of the utility model can be driven to rotate the cylinder 210 to form a high-resistance friction state with the outer wall of the pencil body, and the pencil sleeve assembly can be reliably fixed at the front end of the pencil body, so that the front end of the lead is effectively protected.
[0015] As Figure 2bThe utility model discloses a pen sleeve assembly, which comprises a pen sleeve and a pen body, wherein the pen sleeve comprises a first ring sleeve, a second ring sleeve and an elastic fastening cylinder, the first ring sleeve and the second ring sleeve are connected to each other through the elastic fastening cylinder, the first ring sleeve and the second ring sleeve are arranged on the pen body, and the elastic fastening cylinder is arranged on the pen body.
[0016] Figure 3a 、 3b The utility model discloses a pen sleeve assembly, which comprises a pen sleeve and a pen body, wherein the pen sleeve comprises a first ring sleeve, a second ring sleeve and an elastic fastening cylinder, the first ring sleeve and the second ring sleeve are connected to each other through the elastic fastening cylinder, the first ring sleeve and the second ring sleeve are arranged on the pen body, and the elastic fastening cylinder is arranged on the pen body. Figure 2a The utility model discloses a pen sleeve assembly, which comprises a pen sleeve and a pen body, wherein the pen sleeve comprises a first ring sleeve, a second ring sleeve and an elastic fastening cylinder, the first ring sleeve and the second ring sleeve are connected to each other through the elastic fastening cylinder, the first ring sleeve and the second ring sleeve are arranged on the pen body, and the elastic fastening cylinder is arranged on the pen body.
[0017] Figure 3a The utility model discloses a pen sleeve assembly, which comprises a pen sleeve and a pen body, wherein the pen sleeve comprises a first ring sleeve, a second ring sleeve and an elastic fastening cylinder, the first ring sleeve and the second ring sleeve are connected to each other through the elastic fastening cylinder, the first ring sleeve and the second ring sleeve are arranged on the pen body, and the elastic fastening cylinder is arranged on the pen body. Figure 3bIn the shown state, the finger presses the deformation driving part 217, so that the deformation driving part 217 moves in the direction away from each other, and finally the elastic fastening cylinder 216 is stretched, the pen sleeve assembly and the pen body are in low resistance state, and the pen sleeve assembly can be moved to other positions of the pen body while the finger presses the deformation driving part 217. When the pen sleeve assembly moves to the target position, the finger is released, and the pen sleeve assembly is automatically fastened to the pen body. During the pressing process, the deformation driving part 217 drives the first ring sleeve 214 and the second ring sleeve 212 to move in the longitudinal direction, and also drives the two to move towards the pen body, so that the first or second ring sleeve drives the elastic fastening cylinder 216 to be close to the pen body, and an abnormal high resistance state is generated. In order to prevent the above-mentioned abnormal state from occurring, a guide cylinder 218 can be arranged to ensure that the first and second ring sleeves can only move in the longitudinal direction, so as to ensure that the pen sleeve assembly and the pen body are in low resistance state when the deformation driving part 217 is pressed, and the pen sleeve assembly can be moved.
[0018] The utility model discloses a first, second ring sleeve that can move mutually are set up, and the elastic fastening cylinder 216 is set up in the inner wall of two ring sleeves, and the first, second ring sleeve are close to or away from each other through the finger drive specific drive mechanism, and the inner wall of the elastic fastening cylinder 216 and the pen body are in high resistance state when two are in close state, and the elastic fastening cylinder and the pen body are in low resistance state when away state. In addition to the structure shown in the drive mechanism, any mechanism that can drive the first and second ring sleeves to be close to or away from each other belongs to one of the deformation embodiments of the utility model. Figures 2a-3a In addition, the pen sleeve assembly provided by the utility model has an opening at the front end, so that the lead core front end can move to a position beyond the front end of the pen sleeve through the opening, so that normal writing and fixing of the pen sleeve assembly can be realized without removing the pen sleeve assembly of the utility model. The pen sleeve assembly provided by the utility model can be applied to pencils, fountain pens, wax pens and any application occasion of the lead core that needs to be protected by the pen sleeve.
[0019] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, and any skilled person in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the utility model, and these modifications or replacements should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.
Claims
1. A pen sleeve assembly for protecting the pen refill at the front end of a pen body, characterized in that, The utility model relates to a pen holder, comprising: a first ring and a second ring, the diameter of the first ring and the second ring is larger than the diameter of the pen body, the first ring comprises a protective sleeve extending forward to protect the lead in the front end of the pen body, the front end of the protective sleeve has an opening, so that the pen body can pass through the opening; a elastic fastening cylinder is fixed between the first ring and the second ring respectively at both ends; the outer side of the first ring and the second ring comprises a driving device, the driving device can be driven by fingers to make the first ring and the second ring move along the longitudinal direction of the pen body, the elastic fastening cylinder deforms correspondingly, and the frictional force between the elastic fastening cylinder and the outer side wall of the pen body can be adjusted.
2. The pen cover assembly of claim 1, wherein, The driving device comprises a rotating cylinder located on the outer side of the first ring and the second ring, wherein the inner wall of the rotating cylinder is provided with two kinds of matching grooves and convex parts with the outer wall of the first ring and the second ring respectively, and the first groove is a spiral groove, and the second groove is an annular groove.
3. The pen cover assembly of claim 1, wherein, The driving device comprises a deformation driving part, the deformation driving part is located on the outer side of the first ring and the second ring and is connected to the first ring and the second ring respectively at both ends, and the deformation driving part can be pressed to make the first ring and the second ring move away from each other.
4. The pen cover assembly of claim 3, wherein, The deformation driving part has high frictional resistance between the elastic fastening cylinder and the pen body in the initial state, and the deformation driving part has low frictional resistance between the elastic fastening cylinder and the pen body when being pressed.
5. The pen cover assembly of claim 3, wherein, Further comprising a guide cylinder, one end of the guide cylinder is fixed to the outer wall of the first ring or the second ring, and the second end of the guide cylinder extends to the other ring, so that the second end of the guide cylinder surrounds at least part of the outer wall of the other ring.
6. The pen cover assembly of claim 3, wherein, The first ring and the second ring further have an elastic connecting part.
7. The pen cap assembly as described in claim 1, characterized in that, Both ends of the elastic fastening cylinder are fixed to the inner wall of the first ring and the second ring respectively.