Eraser with pencil sharpener

The eraser design with a built-in pencil sharpener, featuring a push button, a positional mechanism, and an elastic element, solves the problem of needing to tear the eraser box, achieving convenient adjustment and dust and dirt prevention.

CN224256337UActive Publication Date: 2026-05-19WENZHOU XUANHAN STATIONERY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WENZHOU XUANHAN STATIONERY CO LTD
Filing Date
2025-06-25
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

Existing erasers require tearing off the cardboard box, which is inconvenient to use, cumbersome to operate, and easily produces paper scraps, affecting the comfort of holding them.

Method used

Design an eraser with a pencil sharpener, using a push button and a position positioning structure. The length of the eraser can be adjusted in stages through the cooperation of the positioning block and the positioning groove. Combined with an elastic element, it provides an automatic reset force, avoiding the traditional paper box tearing operation.

Benefits of technology

It enables convenient adjustment of eraser length, avoids the inconvenience of tearing cardboard boxes, is dustproof and dirtproof, extends service life, and reduces assembly costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The eraser with the pencil sharpener comprises a shell, an eraser assembly and the pencil sharpener, the shell is provided with a cavity used for installing the eraser assembly and an opening communicated with the cavity, and the eraser extends out of the opening. The eraser assembly comprises a mounting base, an eraser and a push button, the mounting base is slidably mounted in the cavity in the first direction and used for fixing the eraser, the push button is used for driving the mounting base to move, and a gear positioning structure is arranged between the push button and the shell and comprises a plurality of positioning grooves formed in the shell; the positioning blocks are arranged on the push button and connected with the positioning grooves in a matched mode, and the multiple positioning grooves are distributed in the moving direction of the push button at intervals. By means of the push button and the gear positioning structure, the length of the eraser can be adjusted in a gear mode, and traditional tedious operation of tearing a paper box is avoided; in addition, functions of the eraser and the pencil sharpener are combined, the number of stationery is reduced, and carrying is convenient.
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Description

Technical Field

[0001] This utility model relates to the field of daily necessities technology, specifically to an eraser with a pencil sharpener. Background Technology

[0002] Most erasers currently on the market use a paper box packaging structure, requiring users to repeatedly tear open the box to reveal the eraser itself. As the eraser wears out, the box needs to be torn further to continue use. This process is not only cumbersome and prone to producing paper scraps, but frequent tearing can also cause uneven edges on the box, affecting grip comfort. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is to overcome the defect of existing erasers that require tearing off the cardboard box, which makes them inconvenient to use, and thus provide an eraser that is easy to use with a pencil sharpener.

[0004] Therefore, this utility model provides an eraser with a pencil sharpener, including a housing and an eraser assembly. The housing has a cavity for mounting the eraser assembly and an opening communicating with the cavity for the eraser to extend out. The eraser assembly includes a mounting base, an eraser, and a push button. The mounting base is slidably mounted in the cavity along a first direction and is used to fix the eraser. The push button is used to drive the mounting base to move. A position positioning structure is provided between the push button and the housing. The position positioning structure includes a plurality of positioning grooves provided on the housing and a positioning block provided on the push button and adapted to be connected to the positioning grooves. The plurality of positioning grooves are spaced apart along the moving direction of the push button.

[0005] The push button is slidably mounted on the mounting base along a second direction via an elastic element. The extension direction of the second direction is perpendicular to the first direction. The push button has a locked position and an unlocked position. In the locked position, the positioning block abuts against the positioning groove, and the elastic element is in an energy-storing state. In the unlocked position, the positioning block separates from the positioning groove.

[0006] The push button is assembled with the mounting base via an elastic hook structure. The elastic hook structure includes a hook block on the mounting base and an elastic hook on the push button that is connected to the hook block.

[0007] The push button includes the elastic hook, the stop block, and the push button part connected in sequence. The elastic element is a spring sleeved on the elastic hook. One end of the spring abuts against the stop block, and the other end abuts against the baffle on the mounting base. The baffle has a through hole in the middle for the end of the elastic hook to pass through. The two sides of the stop block abut against the inner wall of the housing, and the push button part extends out of the housing.

[0008] Two first positioning ribs are formed on the inner wall of the housing, and a first sliding groove is formed between the two first positioning ribs for the stop block to slide.

[0009] Multiple second positioning ribs are formed on the inner wall of the housing, and a limiting groove adapted to the second positioning ribs is formed on the outer wall of the mounting base.

[0010] The side wall of the housing is formed with a second sliding groove and a plurality of positioning grooves spaced apart along the length of the second sliding groove, and the outer wall of the mounting base is formed with a slider that slides along the second sliding groove.

[0011] A pencil sharpener is mounted on the end of the housing away from the opening.

[0012] The technical solution of this utility model has the following advantages:

[0013] 1. The eraser with a pencil sharpener provided by this utility model, through the push button and the gear positioning structure, the positioning block and the positioning groove cooperate to realize the adjustment of the eraser length in stages, avoiding the cumbersome operation of tearing paper boxes in the traditional way; in addition, the shell opening only exposes the part in use, which is dustproof and dirtproof, and extends the life of the eraser.

[0014] 2. The eraser with a pencil sharpener provided by this utility model has an elastic element that provides an automatic reset force, so that the positioning block and the positioning groove are stably engaged, preventing accidental retraction during use. When switching gears, press the button inward to switch to the unlocked position, and then push the push button downward to adjust the length. The operation can be completed with one hand, which is efficient and convenient.

[0015] 3. The eraser with a pencil sharpener provided by this utility model adopts an elastic hook structure to achieve screwless connection between the push button and the mounting base, reducing assembly costs.

[0016] 4. The eraser with a pencil sharpener provided by this utility model has a second positioning rib that cooperates with the limiting groove to prevent the mounting base from rotating inside the housing and keep the eraser always aligned with the opening. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a perspective view of the eraser with a pencil sharpener of this utility model.

[0019] Figure 2 for Figure 1 Cross-sectional view;

[0020] Figure 3 A schematic diagram of the exploded structure of an eraser with a pencil sharpener;

[0021] Figure 4 This is a three-dimensional view of the shell;

[0022] Figure 5 A 3D view of the push button;

[0023] Figure 6 A 3D image of an eraser with a pencil sharpener after the sharpener has been removed;

[0024] Figure 7 for Figure 6 Top view.

[0025] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Eraser; 3. Opening; 4. Mounting base; 5. Push button; 6. Positioning groove; 7. Positioning block; 8. Elastic element; 9. Hook block; 10. Elastic hook; 11. First positioning rib; 12. Stop block; 13. Push button part; 14. Baffle; 15. Through hole; 16. First sliding groove; 17. Second positioning rib; 18. Limiting groove; 19. Second sliding groove; 20. Slider; 21. Pencil sharpener. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0030] Example

[0031] This embodiment provides an eraser with a pencil sharpener, such as... Figure 1 As shown, it includes a housing 1, an eraser assembly, and a pencil sharpener.

[0032] Casing 1, such as Figure 2 and Figure 3 As shown, it has a cavity for mounting an eraser assembly, and an opening 3 communicating with the cavity for the eraser 2 to extend out. The opening 3 is located at the bottom of the housing 1, and a pencil sharpener 21 is mounted at the end of the housing 1 away from the opening 3 (i.e., the top of the housing 1). Figure 4 As shown, a second sliding groove 19 is formed on the side wall of the housing 1, and a plurality of positioning grooves 6 are spaced apart along the length direction of the second sliding groove 19.

[0033] Eraser components, such as Figure 2 , Figure 6 and Figure 7 As shown, it includes a mounting base 4, an eraser 2, a push button 5, and an elastic element 8.

[0034] The mounting base 4 is slidably mounted in the cavity along a first direction (vertical direction) and is used to fix the eraser 2. The mounting base 4 is formed with a slot for mounting the eraser 2, such as... Figure 7 As shown, the outer wall of the mounting base 4 is formed with a slider 20 and multiple limiting grooves 18, and the slider 20 is slidably connected to the second sliding groove 19. The inner wall of the housing 1 is formed with multiple second positioning ribs 17 that are adapted to and connected to the limiting grooves 18, thereby restricting the rotation of the mounting base 4.

[0035] Push button 5 is used to drive the mounting base 4 to move. A position positioning structure is provided between push button 5 and housing 1, such as... Figure 4 and Figure 5As shown, the gear positioning structure includes multiple positioning grooves 6 on the housing 1, and positioning blocks 7 on the push button 5, which are adapted to and connected to the positioning grooves 6. The multiple positioning grooves 6 are spaced apart along the moving direction of the push button 5. The push button 5 is slidably mounted on the mounting base 4 in a second direction (i.e., in the horizontal direction) via an elastic member 8. The extension direction of the second direction is perpendicular to the first direction. The push button 5 has a locked position and an unlocked position. In the locked position, the positioning block 7 abuts against the positioning groove 6, and the elastic member 8 is in an energy-storing state. In the unlocked position, the positioning block 7 is separated from the positioning groove 6. The push button 5 is assembled with the mounting base 4 via an elastic hook structure, such as... Figure 2 As shown, the elastic hook structure includes a hook block 9 disposed on the mounting base 4, and an elastic hook 10 disposed on the push button 5 and connected to the hook block 9. In this embodiment, as... Figure 5 As shown, the push button 5 includes the elastic hook 10, the stop block 12, and the push button part 13 connected in sequence. The elastic element 8 is a spring sleeved on the elastic hook 10. One end of the spring abuts against the stop block 12, and the other end abuts against the baffle 14 on the mounting base 4. Figure 2 As shown, the baffle 14 has a through hole 15 in the middle for the end of the elastic hook 10 to pass through, the two sides of the stop block 12 abut against the inner wall of the housing 1, and the push button part 13 extends out of the housing 1. Two first positioning ribs 11 are formed on the inner wall of the housing 1, and a first sliding groove 16 is formed between the two first positioning ribs 11 for the stop block 12 to slide.

[0036] This utility model provides an eraser with a pencil sharpener, comprising a housing 1, an eraser assembly, and a pencil sharpener 21. The housing 1 has a cavity for mounting the eraser assembly and an opening 3 communicating with the cavity for the eraser to extend out. The eraser assembly includes a mounting base 4, an eraser 2, and a push button 5. The mounting base 4 is slidably mounted in the cavity along a first direction and is used to fix the eraser. The push button 5 is used to drive the mounting base 4 to move. A position positioning structure is provided between the push button 5 and the housing 1. The position positioning structure includes multiple positioning grooves 6 on the housing 1 and positioning blocks 7 on the push button 5 that are adapted to and connected to the positioning grooves 6. The multiple positioning grooves 6 are spaced apart along the moving direction of the push button 5. Through the push button 5 and the position positioning structure, the eraser length can be adjusted in stages, avoiding the cumbersome operation of traditional paper-tearing boxes. In addition, combining the eraser and pencil sharpener functions reduces the number of stationery items and makes it easy to carry.

[0037] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An eraser with a pencil sharpener, characterized in that, include: The housing (1) has a cavity for mounting the eraser assembly and an opening (3) communicating with the cavity for the eraser (2) to extend out; An eraser assembly includes a mounting base (4), an eraser (2), and a push button (5). The mounting base (4) is slidably mounted in the cavity along a first direction and is used to fix the eraser (2). The push button (5) is used to drive the mounting base (4) to move. A position positioning structure is provided between the push button (5) and the housing (1). The position positioning structure includes a plurality of positioning grooves (6) provided on the housing (1) and a positioning block (7) provided on the push button (5) and adapted to be connected to the positioning grooves (6). The plurality of positioning grooves (6) are spaced apart along the moving direction of the push button (5).

2. The eraser with a pencil sharpener according to claim 1, characterized in that, The push button (5) is slidably mounted on the mounting base (4) along the second direction via an elastic member (8). The extension direction of the second direction is perpendicular to the first direction. The push button (5) has a locked position and an unlocked position. In the locked position, the positioning block (7) abuts against the positioning groove (6), and the elastic member (8) is in an energy storage state. In the unlocked position, the positioning block (7) separates from the positioning groove (6).

3. The eraser with a pencil sharpener according to claim 2, characterized in that, The push button (5) is assembled with the mounting base (4) via an elastic hook structure. The elastic hook structure includes a hook block (9) provided on the mounting base (4) and an elastic hook (10) provided on the push button (5) and hooked to the hook block (9).

4. The eraser with a pencil sharpener according to claim 3, characterized in that, The push button (5) includes the elastic hook (10), the stop block (12) and the push button part (13) connected in sequence. The elastic element (8) is a spring sleeved on the elastic hook (10). One end of the spring abuts against the stop block (12) and the other end abuts against the baffle (14) on the mounting base (4). The baffle (14) has a through hole (15) in the middle for the end of the elastic hook (10) to pass through. The two sides of the stop block (12) abut against the inner wall of the housing (1). The push button part (13) extends out of the housing (1).

5. The eraser with a pencil sharpener according to claim 4, characterized in that, Two first positioning ribs (11) are formed on the inner wall of the housing (1), and a first sliding groove (16) is formed between the two first positioning ribs (11) for the stop block (12) to slide.

6. The eraser with a pencil sharpener according to claim 1, characterized in that, Multiple second positioning ribs (17) are formed on the inner wall of the housing (1), and a limiting groove (18) adapted to the second positioning ribs (17) is formed on the outer wall of the mounting base (4).

7. The eraser with a pencil sharpener according to claim 1, characterized in that, The housing (1) has a second sliding groove (19) formed on its side wall, and a plurality of positioning grooves (6) spaced apart along the length of the second sliding groove (19). The mounting base (4) has a slider (20) formed on its outer wall that slides along the second sliding groove (19).

8. The eraser with a pencil sharpener according to claim 1, characterized in that, A pencil sharpener (21) is mounted on the end of the housing (1) away from the opening (3).