Knob type eraser device

Abstract

The invention discloses a knob type eraser device. The knob type eraser device comprises a base, two sliding parts and a driving structure. The base is provided with a guide structure in the front-back direction. The sliding pieces are arranged in the guide structures in a sliding mode, and each sliding piece is provided with a fixedly-connected eraser element; the driving structure is rotatably mounted on the base, and the driving structure is in transmission connection with the two sliding pieces; when the driving structure rotates, the two sliding pieces are driven to slide in the opposite direction or the opposite direction along the guiding structure, so that the two eraser elements are stored or stretch out. A pair of oppositely-arranged guide grooves are formed in the top of the guide structure, limiting sliding tongues are arranged on the two sides of the two sliding parts correspondingly, and the limiting sliding tongues are arranged in the guide grooves in a sliding mode and used for limiting deviation of the sliding parts in the non-sliding direction; a limiting structure is arranged on the base and clamped to the edge of the bottom of the opening of the driving structure. Through the arrangement, the eraser device is compact in structure, reasonable in component matching and flexible to control.

Description

Technical Field

[0001] The present invention relates to the technical field of stationery, and particularly to a rotary eraser device. Background Art

[0002] As a commonly used stationery in daily study and office, the basic function of an eraser is to erase the handwriting on paper. Traditional erasers are mostly in a block structure, with a relatively large volume. When in use, it needs to be manually held and wiped, the operation is not convenient enough, and problems such as being easily soiled, broken, and inconvenient to carry are likely to occur during long-term use.

[0003] In order to improve the convenience of using an eraser, various structurally improved eraser devices have emerged in recent years, such as push-pull type, press type, pen-shaped erasers, etc. Although such structures have improved part of the use experience, they generally have the following problems: First, the overall structure is complex and occupies a large space, making it difficult to carry or embed in a small stationery combination; second, the sliding parts or eraser components are prone to come off or get stuck, with insufficient reliability; third, the driving method is single and the control method is not flexible enough, making it difficult to achieve precise adjustment of the telescopic state of the eraser by the user. Summary of the Invention

[0004] In order to solve the deficiencies of the prior art, the purpose of the present invention is to provide a rotary eraser device. This eraser device has a compact structure, reasonable cooperation of components, and flexible control.

[0005] Based on the above purpose, the present invention adopts the following technical solutions: A rotary eraser device, comprising: a base, two sliding parts, and a driving structure; a guiding structure along the front-rear direction is provided on the base; the sliding parts are slidably arranged in the guiding structure, and an eraser element is fixedly connected to each sliding part; the driving structure is rotatably installed on the base, and the driving structure is in transmission connection with the two sliding parts, forming a transmission structure that can convert rotational motion into linear motion; when the driving structure rotates, it drives the two sliding parts to slide towards or away from each other along the guiding structure, so that the two eraser elements are retracted or extended; a pair of oppositely arranged guiding grooves are provided at the top of the guiding structure, and limiting sliding tongues are respectively provided on both sides of the two sliding parts, and the limiting sliding tongues are slidably arranged in the guiding grooves for restricting the offset of the sliding parts in the non-sliding direction; a limiting structure is provided on the base, and the limiting structure is clamped at the bottom edge of the opening of the driving structure for restricting the axial separation of the driving structure relative to the base and allowing the driving structure to rotate.

[0006] Further, the driving structure includes a cap and a body, the body is sleeved on the outer peripheral part of the base, and the cap is fixedly arranged on the body or integrally formed with it.

[0007] Further, a groove for driving the two sliding members to move is provided on the bottom surface of the cap, and a protruding portion matching the groove is provided on the top of the sliding member.

[0008] Further, an opening is provided on the side surface of the cap body for the eraser element to pass through; the limiting structure is clamped at the bottom edge position of the opening, and the limiting structure and the bottom edge of the opening can slide relative to each other.

[0009] Further, serrated patterns are provided on the side wall of the cap body.

[0010] Further, a connecting column is provided at one end of the sliding member away from the center of the base; a connecting hole is provided on the eraser element, and the eraser element is detachably sleeved on the connecting column through the connecting hole.

[0011] Further, a linear pattern in the front-rear direction is provided at the bottom of the guiding structure, and a matching pattern is provided at the bottom of the eraser element to cooperate with it, for limiting the lateral offset of the eraser element during the sliding process.

[0012] Further, a limiting post is provided in the middle of the guiding structure, and a limiting groove matching the limiting post is provided at the bottom of the sliding member. When the two sliding members slide towards each other to the fully retracted state of the eraser element, they respectively abut against the limiting post.

[0013] Further, a limiting hole is provided in the middle of the driving structure, a chamfer is provided at the top of the limiting post, and an inclined surface matching the chamfer is provided at the edge of the limiting hole. The limiting post and the limiting hole are positioned and matched through the chamfer and the inclined surface.

[0014] The above-mentioned knob-type eraser device integrates the driving structure on the outer periphery of the base. Through the cooperation mechanism of rotational driving and guiding sliding, the number of internal components is effectively reduced, the overall structure is compact, and the occupied space is small. At the same time, the extension and retraction of the eraser element can be realized by rotating the driving structure, the operation method is intuitive, and the problems of jamming or misoperation that are prone to occur in traditional pressing or pushing operations are avoided. Moreover, the sliding member is embedded in the guiding groove through the limiting tongue, the movement track is controlled, and the stability is strong. The driving structure and the sliding member are in transmission cooperation through the protrusion and the groove, the transmission efficiency is high, and the problems of sliding failure or synchronization imbalance are avoided. In addition, the base and the driving structure are connected through a clamping and limiting structure, which can not only ensure the realization of the rotation function, but also effectively prevent the driving structure from accidentally detaching during use or carrying, enhancing the overall safety and service life of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the eraser device provided by the present invention; Figure 2 is an exploded view of the eraser device provided by the present invention; Figure 3It is a bottom view of the drive structure provided according to the present invention. Detailed implementation manners

[0016] Combined with the embodiments of the present invention below, the technical solutions in the embodiments will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0017] At the same time, in order to clearly illustrate the technical solution of the present application, the upper side, lower side, left side, right side, front side and rear side as Figure 1 shown are also defined.

[0018] As Figures 1 to 3 shown, the present application provides a knob-type eraser device, including: a base 1, a drive structure 4 and two sliding members 2.

[0019] Specifically, a guiding structure 11 along the front-rear direction is provided on the base 1; the sliding members 2 are respectively slidably arranged in the guiding structure 11, and an eraser element 3 is fixedly connected to each sliding member 2; the drive structure 4 is rotatably mounted on the base 1 and is in transmission connection with the two sliding members 2, forming a transmission structure that can convert rotational motion into linear motion, and is used to drive the two sliding members 2 to slide towards or away from each other along the guiding structure 11 by rotation, so that the two eraser elements are received or extended. Among them, when the drive structure 4 rotates along the first direction T1, it drives the sliding member 2 to slide away, so that the eraser element 3 extends from the base 1; when the drive structure 4 rotates along the second direction T2, it drives the sliding member 2 to slide towards each other, so that the eraser element 3 is received into the base 1.

[0020] Through the above settings, only by rotating the drive structure 4 can the extension and retraction of the eraser element 3 be realized. The operation is simple and the structure is compact, avoiding common problems such as jamming and offset in traditional sliding mechanisms. The guiding structure 11 ensures the stability of the movement of the sliding member 2 and avoids skew. The bidirectional rotation control of the drive structure 4 improves the flexibility of use and can complete the extension or reception of the eraser device according to the rotation direction. The eraser element 3 can be completely received in the base 1, effectively protecting it from pollution or damage, and improving the durability and user experience of the overall product.

[0021] More specifically, the driving structure 4 includes a cap 41 and a cap body 42. The cap body 42 is sleeved on the outer peripheral part of the base 1, and the cap 41 is fixedly arranged on the cap body 42 or integrally formed therewith. A groove 43 for driving the movement of two sliding members is provided on the bottom surface of the cap 41, and a protruding portion cooperating with the groove 43 is provided on the top of the sliding member. By rotating the cap 41, the driving of the slider 2 is realized, without the need to provide a complex transmission mechanism, reducing the manufacturing difficulty and cost. The cap ring, as a rotational support and limiting structure, improves the fitting accuracy between the driving structure 4 and the base 1 and enhances the assembly stability.

[0022] Furthermore, an opening 44 is provided on the side surface of the cap body 42 for the eraser element 3 to pass through. A limiting structure 12 is provided on the base 1, and the limiting structure 12 is clamped at the bottom edge position of the driving structure 4 for restricting the axial detachment of the driving structure 4 relative to the base 1 and allowing the driving structure 4 to rotate. Specifically, the limiting structure 12 is clamped at the bottom edge position of the opening 44, and the limiting structure 12 and the bottom edge of the opening 44 can slide relative to each other. Through the above arrangement, on the basis of ensuring the smooth telescoping of the eraser element 3, the problem of axial detachment of the driving structure 4 caused by uneven force or misoperation during use is effectively prevented, improving the safety and durability of the product. At the same time, through the relative sliding fit between the limiting structure 12 and the edge of the opening 44, a stable constraint on the driving structure 4 is realized without sacrificing the operation flexibility, optimizing the structural reliability of the device.

[0023] As Figure 1 shown, serrated patterns are provided on the side wall of the cap body 42, thereby enhancing the user's gripping feeling, improving the sensitivity and controllability of the rotational operation, reducing the slipping risk of wet fingers during use, and enhancing the overall comfort and safety of use.

[0024] As Figure 2 shown, a pair of oppositely arranged guiding grooves 13 are provided at the top of the guiding structure 11. Limiting tongues 22 are respectively provided on both sides of the two sliders 2, and the limiting tongues 22 are slidably arranged in the guiding grooves 13 for restricting the offset of the sliders 2 in the non-sliding direction, thereby effectively controlling the movement track of the sliders 2 and preventing problems such as offset, swing or derailment caused by lateral force, significantly improving the operation reliability and structural stability of the device.

[0025] One end of the slider 2 away from the center of the base 1 is provided with a connecting post 23. A connecting hole 31 is correspondingly provided on the eraser element 3, and the eraser element 3 is detachably sleeved on the connecting post 23 through the connecting hole 31. This structure provides a quick disassembly and assembly mechanism for the eraser element 3, facilitating users to replace it after the eraser device has been used to a certain extent, significantly improving the maintainability and service life of the product. In addition, due to the simple structure and low manufacturing cost, the user experience and after-sales convenience can be improved without increasing the production cost.

[0026] The bottom of the guiding structure 11 is provided with linear patterns in the front-back direction, and the bottom of the eraser element 3 is provided with matching patterns for cooperation therewith, which are used to limit the lateral offset of the eraser element 3 during the sliding process. This design significantly improves the sliding accuracy and use stability, effectively avoiding problems such as uneven friction or unsmooth operation caused by the lateral shaking of the eraser element 3 during the sliding process. By enhancing the structural constraint, the overall operation reliability and service life of the device are improved, while the operation error is reduced and the use efficiency of the eraser device is increased.

[0027] Furthermore, a limiting post 14 is arranged in the middle of the guiding structure 11, and a limiting groove 24 corresponding to the limiting post 14 is provided at the bottom of the slider 2. When the two sliders 14 slide towards each other until the eraser element 3 is in the fully retracted state, the two sliders 2 respectively abut against the limiting post 14. By providing the matching structure of the limiting post 14 and the limiting groove 24, the slider 2 can be effectively prevented from continuing to slide when it is not fully retracted, improving the structural stability and use safety of the eraser device. While ensuring the accuracy of retraction, this design also facilitates users to judge the state of complete retraction, which helps to improve the user experience.

[0028] A limiting hole 45 corresponding to the limiting post 14 is arranged in the middle of the driving structure 4. A chamfer 15 is provided at the top of the limiting post 14, and the edge of the limiting hole 45 is provided with an inclined surface corresponding to the chamfer 15. The limiting post 14 and the limiting hole 45 are positioned and matched through the chamfer 15 and the inclined surface. By adopting the limiting structure 12 with the cooperation of the chamfer 15 and the inclined surface, on the one hand, the assembly guiding property between the limiting post 14 and the limiting hole 45 is improved, reducing the mechanical impact during rotation; on the other hand, smoother positioning and stopping are achieved through the inclined surface cooperation, avoiding damage to the structure caused by abrupt stopping and extending the service life of the device.

[0029] The above is the description of the embodiments of the present invention. Through the above description of the disclosed embodiments, those skilled in the art can implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A knob-type eraser device, characterized in that, Comprising: A base (1), on which a guiding structure (11) is provided in the front-rear direction; Two sliding members (2), which are slidably arranged in the guiding structure (11), and an eraser element (3) fixedly connected is provided on each sliding member (2); A driving structure (4), which is rotatably mounted on the base (1), and the driving structure (4) is in transmission connection with the two sliding members (2) to form a transmission structure capable of converting rotational motion into linear motion; when the driving structure (4) rotates, it drives the two sliding members (2) to slide towards or away from each other along the guiding structure (11), so that the two eraser elements (3) are received or extended; A pair of oppositely arranged guiding grooves (13) are provided at the top of the guiding structure (11), and limiting sliding tongues (22) are respectively provided on both sides of the two sliding members (2), and the limiting sliding tongues (22) are slidably arranged in the guiding grooves (13) for restricting the offset of the sliding members (2) in the non-sliding direction; A limiting structure (12) is provided on the base (1), and the limiting structure (12) is clamped at the bottom edge position of the driving structure (4) for restricting the axial detachment of the driving structure (4) relative to the base (1) and allowing the driving structure (4) to rotate.

2. The rotatable and retractable eraser device according to claim 1, wherein: The driving structure (4) includes a cap (41) and a cap body (42), the cap body (42) is sleeved on the outer peripheral part of the base (1), and the cap (41) is fixedly arranged on the cap body (42) or integrally formed with it.

3. The rotatable and retractable eraser device according to claim 2, wherein: A groove (43) for driving the two sliding members (2) to move is provided on the bottom surface of the cap (41), and a protruding portion (21) cooperating with the groove (43) is provided on the top of the sliding member (2).

4. The rotatable storage eraser device according to claim 2, wherein: An opening (44) is provided on the side surface of the cap body (42), and the opening (44) is used for the eraser element (3) to pass through; the limiting structure (12) is clamped at the bottom edge position of the opening (44), and the limiting structure (12) and the bottom edge of the opening (44) can slide relatively.

5. The rotatable and retractable eraser device according to claim 2, wherein: A serrated pattern is provided on the side wall of the cap body (42).

6. The rotatable and retractable eraser device according to claim 1, characterized in that: A connecting column (23) is provided at one end of the sliding member (2) away from the center of the base (1); a connecting hole (31) is provided on the eraser element (3), and it is detachably sleeved on the connecting column (23) through the connecting hole (31).

7. The rotatable and retractable eraser device according to claim 1, wherein: A linear pattern is provided at the bottom of the guiding structure (11) in the front-rear direction, and a matching pattern is provided at the bottom of the eraser element (3) for restricting the lateral offset of the eraser element (3) during the sliding process.

8. The rotatable and retractable eraser device according to claim 1, wherein: A limiting column (14) is provided in the middle of the guiding structure (11), and a limiting groove (24) cooperating with the limiting column (14) is provided at the bottom of the sliding member (2). When the two sliding members (2) slide towards each other to the state where the eraser element (3) is completely received, they respectively abut against the limiting column (14).

9. The rotatable and retractable eraser device according to claim 8, wherein: A limiting hole (45) is provided in the middle of the driving structure (4). A chamfer (15) is provided at the top of the limiting post (14). An inclined surface matching with the chamfer (15) is provided at the edge of the limiting hole (45). The limiting post (14) and the limiting hole (45) are positioned and matched through the chamfer (15) and the inclined surface.

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