A push-pull eraser

Abstract

The utility model provides a kind of push-pull eraser, including shell and rubber body (1), the shell is equipped with slide (202) inside, the shell is slidably matched with push and twist (4) component, the push and twist (4) component is connected with the rubber body (1), the push and twist (4) component can promote the rubber body (1) in the slide (202) sliding;At least one recess (101) is equipped on the lateral wall of the rubber body (1), the recess (101) is along the length direction of the rubber body (1) setting;The cross section of the rubber body (1) has wide surface, narrow surface and at least 5 angles.The push-pull eraser can realize accurate wiping of drawing line details, and can also quickly complete large-area cleaning of book pages, significantly improve use efficiency and convenience, better meet market and consumer diversification needs.

Description

Technical Field

[0001] This utility model relates to the technical field of stationery, and more specifically to a push-pull eraser. Background Technology

[0002] Push-pull erasers, as an innovative alternative to traditional boxed erasers and ordinary erasers, are favored by consumers for their unique push-pull design. Compared to ordinary erasers, which are prone to wear and tear and easy to lose, push-pull erasers store the eraser core inside the outer shell. The eraser is pushed out and pulled back by a button, which avoids contamination caused by direct contact between the eraser and the outside world, and effectively reduces eraser wear. They are clean and convenient to use and are widely used in various scenarios such as students' daily writing and office workers' document editing.

[0003] While push-pull erasers solve the problems of ordinary erasers being messy and difficult to store, their square cores limit their usability. In practical applications, consumers need to precisely erase details such as lines and handwriting on drawings, as well as quickly clean large areas like book pages and draft paper. However, traditional square-core push-pull erasers are difficult to use precisely when dealing with details due to their large contact area, and when erasing large areas, the limited area covered per eraser necessitates frequent movement, resulting in low erasing efficiency. With the market's increasing demand for diverse stationery functions, developing a push-pull eraser that can meet both detailed erasing needs and efficient large-area erasing has become an inevitable choice to adapt to market trends and meet consumer demands. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a push-pull eraser that can accurately erase details such as lines on drawings, and quickly clean large areas such as book pages, significantly improving efficiency and convenience, and better meeting the diverse needs of the market and consumers.

[0005] The technical solution of this utility model is to provide a push-pull eraser, including a housing and an eraser body. The housing is provided with a slide rail, and a push-twist component is slidably fitted on the housing. The push-twist component is connected to the eraser body and can push the eraser body to slide within the slide rail. The side wall of the eraser body is provided with at least one recess, which is provided along the length direction of the eraser body. The cross-section of the eraser body has a wide face, a narrow face, and at least 5 corners.

[0006] Compared with existing technologies, the push-pull eraser of this utility model has the following advantages: The eraser body has a special design with a wide surface, a narrow surface, and at least 5 corners in its cross-section. Compared with the traditional square core, the wide surface can be used for fast erasing of large areas, the narrow surface is suitable for precise erasing of small areas, and the multiple corners can reach into details, meeting the erasing needs of fine details such as lines on drawings. This realizes flexible switching between large-area erasing and detailed erasing in different scenarios, greatly improving erasing efficiency and accuracy. In addition, the side wall of the eraser body is provided with a recessed part along the length direction, which can effectively reduce the contact area between the eraser and the slide, reduce the friction between the two, and make the eraser body extend and retract more smoothly in the slide, avoiding jamming and improving the user experience.

[0007] As an improvement, the eraser body has recesses on both opposite sides, and the recesses are symmetrically arranged. The symmetrically distributed recesses enhance the stability and fit of the eraser body when connected to other components, avoid localized wear or breakage caused by uneven force, and significantly improve the overall durability and user experience of the push-pull eraser.

[0008] As an improvement, the eraser body is cross-shaped, with recesses on all four sides. The cross shape, with its wide and narrow surfaces and multiple corners, precisely adapts to different needs, including rapid erasing of large areas, precise wiping of small areas, and cleaning of details. The symmetrical structure of the recesses on the four sides ensures the eraser does not easily tilt during extension and retraction, guaranteeing stable and controllable wiping direction, significantly improving user experience and wiping efficiency.

[0009] As an improvement, the sidewall of the recessed portion is an arc surface. The arc surface provides a natural transition, avoiding stress concentration caused by sharp corners and preventing edge wear and breakage during frequent expansion and contraction of the rubber, thus extending its service life. As another improvement, the push-twist assembly includes a push-twist and a return elastic element. The housing is provided with a push-twist slide rail, and the push-twist slidably engages within the slide rail. The inner end of the rubber body is provided with a seat, and the connecting part of the push-twist passes through the slide rail and connects to the seat. The return elastic element is installed between the push-twist and the seat. A locking structure is provided between the push-twist and the slide rail. The sliding engagement and locking structure between the push-twist and the slide rail ensure that the user can flexibly control the extension length of the rubber while also securing it firmly to prevent retraction during use, resulting in precise and effortless operation.

[0010] As an improvement, one end of the seat is provided with a connecting post, the shape of which matches the shape of the recessed portion, and the connecting post is embedded in the recessed portion. This tightly fitting structure effectively enhances the connection strength between the seat and the rubber body, preventing detachment or loosening during pushing and pulling, and ensuring stability during use.

[0011] As an improvement, the seat body is provided with a connecting cavity, and the connecting part of the push-twist is movably connected to the connecting cavity. The return elastic element is provided between the connecting part and the side wall of the connecting cavity. The connecting cavity limits and guides the connecting part of the push-twist, ensuring the transmission of force during push-pull operations and preventing the rubber body from shifting or shaking. The return elastic element uses elastic potential energy to drive the push-twist to automatically return to its original position after the push-pull action is completed.

[0012] As an improvement, a support plate is provided between the side walls of the connecting cavity, and connecting feet are provided on both sides of the lower end of the connecting part. The lower end of each connecting foot is provided with a barb, which limits the connection to the lower side of the support plate. A return elastic element is installed between the connecting part and the support plate. The support plate provides stable support to the connecting part, and the barb at the lower end of the connecting foot limits the connection to the lower side of the support plate, forming a reliable anti-detachment structure. This ensures a firm connection between the push-twist assembly and the seat, preventing loosening or separation during use.

[0013] As an improvement, the upper end face of the connecting part of the push-twist is provided with a protruding neck, which protrudes through the push-twist slide and is exposed outside the housing. A button is connected to the end of the push-twist. A serrated strip is provided on the side wall of the push-twist slide, and a protrusion is provided on the side wall of the protruding neck. The protrusion is embedded in the tooth groove of the serrated strip, and the serrated strip and the protrusion form the locking structure. When the push-twist is pressed down, the protrusion can disengage from the tooth groove. The design of the serrated strip and the protrusion embedded in the tooth groove ensures that the eraser body can be firmly locked after being pushed out, preventing accidental retraction during use and ensuring continuous wiping. When it is necessary to adjust the extension length of the eraser body or reset it, the push-twist is pressed down, and the protrusion can disengage from the tooth groove, making the operation simple and flexible.

[0014] As an improvement, the housing includes a box body and a lid. The box body has openings at both ends, and its inner cavity forms the slide. A push-to-turn slide is provided on the side wall of the box body, with an opening at one end. The lid is connected to one end of the box body, covering the opening at one end of the box body and the opening of the push-to-turn slide. The openings at both ends of the box body and at one end of the push-to-turn slide facilitate the installation and assembly of the rubber body and the push-to-turn assembly, simplifying the manufacturing process. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the push-pull eraser of this utility model.

[0016] Figure 2 This is a schematic diagram of the exploded structure of the push-pull eraser of this utility model.

[0017] Figure 3This is a three-dimensional structural diagram of the eraser body of the push-pull eraser of this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of the push-pull eraser of this utility model.

[0019] Figure 5 This is a three-dimensional structural diagram of the base of the push-pull eraser of this utility model.

[0020] As shown in the figure: 1. Rubber body, 101. Recessed part, 102. Arc surface, 2. Box body, 201. Push-twist slide, 202. Slide, 203. Serrated strip, 3. Box cover, 4. Push-twist, 401. Connecting part, 402. Protruding neck, 403. Button, 404. Protrusion, 405. Connecting foot, 406. Barb, 407. First spring seat, 6. Seat body, 601. Connecting cavity, 602. Support plate, 603. Second spring seat, 604. Connecting post. Detailed Implementation

[0021] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0022] In the accompanying drawings, the thickness, size, and shape of the objects have been slightly exaggerated for illustrative purposes. The drawings are for illustrative purposes only and are not drawn to scale.

[0023] It should also be understood that the terms "comprising," "having," "including," and "containing," when used in this specification, indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. Furthermore, when expressions such as "...at least one" appear after a list of listed features, they modify the entire listed feature, not individual elements in the list.

[0024] like Figures 1 to 5 As shown, this utility model discloses a push-pull eraser, including a housing and an eraser body 1.

[0025] The housing includes a box body 2 and a lid 3, with openings at both ends of the box body 2. A push-to-turn slide 201 is provided on the side wall of the box body 2, with an opening at one end of the slide 201. The lid 3 is connected to one end of the housing, either by a snap-fit ​​or by a fastener; the lid 3 covers the opening on one side of the box body 2 and the opening of the push-to-turn slide 201. The inner cavity of the box body 2 and the opening at the other end of the box body 2 form a slide 202, within which the rubber body 1 slides.

[0026] The rubber body 1 has at least one recess 101 on its sidewall, the recess 101 being arranged along the length of the rubber body 1. The cross-section of the rubber body 1 has a wide surface, a narrow surface, and at least five corners. The sidewall of the recess 101 is an arc surface 102. To make the structure more stable, the recess 101 is provided on both opposite sides of the rubber body 1, and the recesses 101 are symmetrically arranged. In this specific embodiment, the rubber body 1 is cross-shaped, and the recess 101 is provided on all four sides of the rubber body 1, including two wide surfaces, two narrow surfaces, and eight corners.

[0027] The housing is slidably fitted with a push-twist 4 component, which is connected to the rubber body 1 and can push the rubber body 1 to slide within the slide rail 202.

[0028] The push-twist assembly 4 includes a push-twist 4 and a return elastic element. The housing is provided with a push-twist slide 201, and the inner end of the rubber body 1 is provided with a seat 6. The connecting part 401 of the push-twist 4 passes through the push-twist slide 201 and connects with the seat 6.

[0029] The upper end face of the connecting part 401 of the push-twist 4 is provided with a protruding neck 402. The protruding neck 402 passes through the push-twist slide 201 and is exposed outside the housing. The end of the push-twist 4 is connected to a button 403. The side wall of the push-twist slide 201 is provided with a serrated strip 203, and the side wall of the protruding neck 402 is provided with a protrusion 404. The protrusion 404 is embedded in the tooth groove of the serrated strip 203, and the serrated strip 203 and the protrusion 404 form the locking structure. When the push-twist 4 is pressed down, the protrusion 404 can disengage from the tooth groove. In this specific embodiment, the serrated strip 203 is provided on both sides of the slide of the push-twist 4, and the protrusion 404 is provided on both sides of the protruding neck 402. The protrusions 404 on both sides are embedded in the tooth grooves of the serrated strips 203 on both sides.

[0030] The seat 6 has a connecting cavity 601, and the connecting part 401 of the push-twist 4 is movably connected to the connecting cavity 601. A support plate 602 is provided between the side walls of the connecting cavity 601. Connecting feet 405 are provided on both sides of the lower end of the connecting part 401, and a barb 406 is provided at the lower end of each connecting foot 405, limiting the position of the barb 406 to the lower side of the support plate 602. A return elastic element is installed between the connecting part 401 and the support plate 602. The return elastic element is a return spring. A first spring seat 407 is provided at the lower end of the connecting part 401, and a second spring seat 603 is provided on the upper surface of the support plate 602. The two ends of the return spring are respectively fitted onto the first spring seat 407 and the second spring seat 603.

[0031] The seat 6 has a connecting post 604 at one end near the rubber body 1. The number of connecting posts 604 corresponds to the number of recesses 101, and the shape of the connecting posts 604 matches the shape of the recesses 101. The connecting posts 604 are embedded in the recesses 101. In this specific embodiment, there are four connecting posts 604, which are embedded in four recesses 101 in a one-to-one correspondence.

[0032] In use, the push-pull eraser of this invention allows the user to simply press the button 403, which protrudes from the outer casing of the push-touch 4. When the push-touch 4 moves to a specific position, the protrusion on the side wall disengages from the serrated groove of the push-touch slide 201, unlocking the sliding restriction of the push-touch 4. At this point, the user can easily push or pull the push-touch 4 forward or backward as needed. Guided by the push-touch slide 201, the push-touch 4 drives the base 6 and the eraser body 1 to slide smoothly along the slide 202. Pushing the push-touch 4 forward causes the eraser body 1 to slowly extend out of the casing, immediately satisfying the wiping need; pushing the push-touch 4 in the opposite direction causes the eraser body 1 to retract into the casing. The entire operation is smooth and natural, requiring no effort, truly achieving a labor-saving, convenient, and efficient user experience, greatly improving user comfort and work efficiency.

[0033] The above are merely specific embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Any modifications or equivalent substitutions to this utility model without departing from its spirit and scope should be covered within the protection scope of the claims of this utility model.

Claims

1. A push-pull eraser, comprising a housing and an eraser body (1), wherein a slide rail (202) is provided inside the housing, and a push-twist (4) assembly is slidably fitted on the housing, the push-twist (4) assembly being connected to the eraser body (1), and the push-twist (4) assembly being capable of pushing the eraser body (1) to slide within the slide rail (202); characterized in that: The rubber body (1) has at least one recess (101) on its side wall, and the recess (101) is arranged along the length direction of the rubber body (1); the cross-section of the rubber body (1) has a wide surface, a narrow surface and at least 5 corners.

2. The push-pull eraser according to claim 1, characterized in that: The rubber body (1) has recesses (101) on both sides opposite to each other, and the recesses (101) are arranged symmetrically.

3. The push-pull eraser according to claim 2, characterized in that: The rubber body (1) is in the shape of a cross, and the recesses (101) are provided on all four sides of the rubber body (1).

4. The push-pull eraser according to claim 1, characterized in that: The sidewall of the recess (101) is an arc surface (102).

5. The push-pull eraser according to any one of claims 1 to 4, characterized in that: The push-twist (4) assembly includes a push-twist (4) and a return elastic element. The housing is provided with a push-twist slide (201), and the push-twist (4) is slidably fitted in the push-twist slide (201). The inner end of the rubber body (1) is provided with a seat (6). The connecting part (401) of the push-twist (4) passes through the push-twist slide (201) and connects with the seat (6). The return elastic element is installed between the push-twist (4) and the seat (6). A locking structure is provided between the push-twist (4) and the push-twist slide (201).

6. The push-pull eraser according to claim 5, characterized in that: One end of the seat (6) is provided with a connecting post (604), the shape of the connecting post (604) matches the shape of the recess (101), and the connecting post (604) is embedded in the recess (101).

7. The push-pull eraser according to claim 5, characterized in that: The seat (6) is provided with a connecting cavity (601), and the connecting part (401) of the push knob (4) is movably connected in the connecting cavity (601). The return elastic member is provided between the connecting part (401) and the side wall of the connecting cavity (601).

8. The push-pull eraser according to claim 7, characterized in that: A support plate (602) is provided between the side walls of the connecting cavity (601). Connecting feet (405) are provided on both sides of the lower end of the connecting part (401). A barb (406) is provided at the lower end of the connecting foot (405). The barb (406) is limited to the lower side of the support plate (602). The return elastic element is installed between the connecting part (401) and the support plate (602).

9. The push-pull eraser according to claim 5, characterized in that: The upper end face of the connecting part (401) of the push knob (4) is provided with a protruding neck (402), the protruding neck (402) passes through the push knob slide (201) and is exposed outside the housing. The end of the push knob (4) is connected to a button (403). The side wall of the push knob slide (201) is provided with a serrated strip (203), and the side wall of the protruding neck (402) is provided with a protrusion (404). The protrusion (404) is embedded in the tooth groove of the serrated strip (203). The serrated strip (203) and the protrusion (404) form the locking structure. When the push knob (4) is pressed down, the protrusion (404) can disengage from the tooth groove.

10. The push-pull eraser according to claim 5, characterized in that: The housing includes a box body (2) and a lid (3). Both ends of the box body (2) are provided with openings. The inner cavity of the box body (2) forms the slide (202). The side wall of the box body (2) is provided with a push-twist slide (201). One end of the push-twist slide (201) is also provided with an opening. The lid (3) is connected to one end of the box body (2). The lid (3) covers the opening at one end of the box body (2) and the opening of the push-twist slide (201).

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