Paper clamping assembly and printer

Abstract

A paper clamping assembly and printer are disclosed. The paper clamping assembly includes a first moving component, a second moving component, a transmission component, and a mounting bracket for mounting at the paper output outlet. An open mounting groove is formed within the mounting bracket. The first moving component, the second moving component, and the transmission component are all disposed within the mounting groove. The first moving component is connected to the second moving component via the transmission component, enabling the first and second moving components to move simultaneously towards or away from each other. The paper clamping assembly also includes an elastic self-locking device with a pawl, which is disposed on at least one of the first and second moving components. A ratchet is provided on the inner wall of the mounting groove, and the ratchet has multiple hook-tooth structures along the length of the mounting groove. These hook-tooth structures cooperate with the ratchet to limit the positions of the first and second moving components.

Description

Technical Field

[0001] This utility model relates to the field of printer technology, and in particular to a paper clamping assembly and a printer. Background Technology

[0002] Printers are widely used in people's daily lives, especially in offices where they are standard equipment. To ensure stable paper feeding during printing, printers have paper clamping components at the paper inlet. These components hold the paper in place, ensuring a stable paper feed. However, most existing paper clamping components rely on the friction of silicone sheets or high-viscosity damping grease to provide strong friction for limiting the paper's movement. Silicone sheets and high-viscosity damping grease can fail under extreme conditions, failing to achieve the limiting effect. Furthermore, as they age, their friction decreases, also losing their limiting effect. This results in the paper clamping component failing to effectively limit the paper, causing the paper to shift during transport and ultimately leading to misalignment and deviation in the printed content. Utility Model Content

[0003] This invention provides a paper clamping assembly and a printer, aiming to solve at least one of the technical problems existing in the prior art.

[0004] According to a first aspect of the present invention, the present invention provides a paper clamping assembly for use in a printer, the printer having a paper output port, the paper clamping assembly including a first moving assembly, a second moving assembly, a transmission assembly, and a mounting bracket for mounting at the paper output port, the mounting bracket having an open mounting groove, at least a portion of the first moving assembly, at least a portion of the second moving assembly, and the transmission assembly being disposed in the mounting groove, and the first moving assembly being connected to the second moving assembly via the transmission assembly, such that the first moving assembly and the second moving assembly can move simultaneously toward or away from each other; The paper clamping assembly further includes an elastic self-locking device with a pawl, which is disposed on at least one of the first moving assembly and the second moving assembly. A ratchet is provided on the inner sidewall of the mounting groove, and the ratchet is provided with a plurality of hook tooth structures along the length direction of the mounting groove. The plurality of hook tooth structures cooperate with the ratchet to limit the movement position of the first moving assembly and the second moving assembly.

[0005] In a paper clamping assembly according to one embodiment of the present invention, the elastic self-locking device includes a connecting part and two latching parts, the two latching parts are spaced apart at one end of the connecting part, the connecting part is fixed to the side of the first moving component and / or the second moving component facing the mounting groove, and the pawl is disposed on the side opposite to the two latching parts.

[0006] In a paper clamping assembly according to one embodiment of the present invention, the elastic self-locking device further includes a limiting part, which is disposed on one side opposite to the two latching parts, and the distance between the two limiting parts is not less than the sum of the extension lengths of the two pawls.

[0007] In a paper clamping assembly according to one embodiment of the present invention, the width of the snap-fit ​​portion gradually increases from the direction away from the connecting portion.

[0008] In a paper clamping assembly according to one embodiment of the present invention, the connecting portion has a groove structure on the side near the latching portion, and the groove structure extends from one of the latching portions to another.

[0009] In a paper clamping assembly according to one embodiment of the present invention, the width of the groove structure is adapted to the maximum width of the pawl.

[0010] In a paper clamping assembly according to one embodiment of the present invention, the first moving component includes a first limiting block, the second moving component includes a second limiting block, and the connecting parts are all disposed on the side of the first limiting block and the second limiting block facing the mounting groove.

[0011] In a paper clamping assembly according to one embodiment of the present invention, the connecting part is provided with a positioning groove, and the first limiting block and the second limiting block are provided with positioning platforms, the positioning platforms cooperating with the positioning groove.

[0012] In a paper clamping assembly according to one embodiment of the present invention, the first moving component includes a first rack, the second moving component includes a second rack, and the transmission component includes a gear structure, wherein the first rack is connected to the second rack via the gear structure.

[0013] According to a second aspect of the present invention, the present invention also provides a printer including the aforementioned paper clamping assembly.

[0014] The technical solution provided in this application embodiment may include the following beneficial effects: This application designs a paper clamping assembly and a printer. The paper clamping assembly includes a first moving assembly, a second moving assembly, a transmission assembly, and a mounting bracket for mounting at the paper outlet. At least a portion of the first moving assembly, at least a portion of the second moving assembly, and the transmission assembly are all disposed in the mounting groove of the mounting bracket. The first moving assembly is connected to the second moving assembly through the transmission assembly, ensuring that the first moving assembly and the second moving assembly can move synchronously and accurately towards or away from each other, and ensuring uniform clamping force. The mounting slot has a ratchet bar on its inner wall, and the first and / or second moving components are equipped with elastic self-locking devices. The pawl of the elastic self-locking device can cooperate with the hook tooth structure of the ratchet bar to limit the movement of the first and second moving components, achieving one-way or two-way mechanical self-locking. This effectively prevents the paper clamping components from accidentally sliding during use, replacing the traditional friction limiter. This fundamentally avoids the impact of the environment and aging on performance. Furthermore, the clear "click" sound of the first and second moving components during movement provides users with good operational feedback and solves the pain point of declining print quality due to component aging after long-term use, thus enhancing product durability and user satisfaction.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments 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 based on these drawings without creative effort.

[0017] Figure 1 This is a partial schematic diagram of a printer provided in one embodiment of this application; Figure 2 yes Figure 1 A partial exploded view of the printer in the image; Figure 3 yes Figure 2 A schematic diagram of the paper clamping assembly in the diagram; Figure 4 yes Figure 3 A cross-sectional schematic diagram of the paper clamping assembly in the middle; Figure 5 yes Figure 3 A partial schematic diagram of the paper clamping assembly; Figure 6 yes Figure 3 An exploded view of the paper clamping component; Figure 7 yes Figure 6 A partial schematic diagram of the paper clamping component; Figure 8 yes Figure 7 An exploded view of the first moving component in the diagram; Figure 9 yes Figure 8 A schematic diagram of the elastic self-locking device in the diagram.

[0018] Explanation of reference numerals in the attached figures: 100. Paper clamping assembly; 200. Printer body; 201. Printer housing; 10. First moving component; 11. First limiting block; 12. First rack; 20. Second moving component; 21. Second limiting block; 22. Second rack; 30. Transmission components; 40. Mounting bracket; 41. Mounting slot; 411. Ratchet; 42. Gear mounting slot; 50. Flexible self-locking device; 51. Pawl; 52. Connecting part; 53. Snap-fit ​​part. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] It should also be understood that the terminology used in this utility model specification is merely for describing specific aspects of the present application. It is important to understand that terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present application 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. Therefore, they should not be construed as limitations on the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0022] like Figures 1 to 9 As shown, according to a first aspect of this application, this application provides a paper clamping assembly 100 for use in a printer. The printer includes a printer body 200, which includes a printer housing 201. The printer housing 201 is provided with a paper output port to accommodate the output of papers of different widths, prevent the paper being conveyed from shifting, and improve the accuracy and stability of subsequent paper output.

[0023] In one optional embodiment, the paper clamping assembly 100 includes a first moving component 10, a second moving component 20, a transmission component 30, and a mounting bracket 40 for mounting at the paper outlet. The mounting bracket 40 has an open mounting groove 41. At least a portion of the first moving component 10, at least a portion of the second moving component 20, and the transmission component 30 are all disposed in the mounting groove 41. The first moving component 10 is connected to the second moving component 20 via the transmission component 30, allowing the first moving component 10 and the second moving component 20 to move simultaneously towards or away from each other. This facilitates stable positioning of papers of different widths, ensuring uniform clamping force and precise guidance of different types of paper, preventing paper deviation during transport. Specifically, the first moving component 10 and the second moving component 20 moving towards each other can clamp the paper; moving away from each other can release the paper. This allows the paper clamping assembly 100 to adapt to the output of papers of different widths, preventing paper deviation during transport and improving the accuracy and stability of subsequent paper output.

[0024] In an optional embodiment, the paper clamping assembly 100 further includes an elastic self-locking device 50 with a pawl 51. The elastic self-locking device 50 is disposed on at least one of the first moving assembly 10 and the second moving assembly 20. A ratchet 411 is provided on the inner sidewall of the mounting groove 41. The ratchet 411 has multiple hook tooth structures along the length direction of the mounting groove 41. The multiple hook tooth structures cooperate with the pawl 51 to limit the movement position of the first moving assembly 10 and the second moving assembly 20. The limiting is achieved through a purely mechanical structure, which is not affected by environmental changes such as temperature and humidity. The performance is stable and there are no problems such as silicone aging or grease drying, resulting in excellent durability. At the same time, during the movement, the pawl 51 of the elastic self-locking device 50 on the first moving assembly 10 and / or the second moving assembly 20 will slide along the tooth surface of the ratchet 411, making a clicking sound, providing good operational feedback to the user.

[0025] After adopting the above technical solution, due to the unique shape of the pawl 51 and the hook tooth of the pawl 411, which is usually a steep slope and a vertical surface, to provide discrete but precise positioning points, when the first moving component 10 and the second moving component 20 are subjected to the outward reverse force of the paper, the pawl 51 will be firmly pressed against the vertical surface of the hook tooth and cannot move in the opposite direction. This achieves one-way or two-way mechanical self-locking, prevents accidental slippage during use, solves the pain point of decreased print quality due to component aging after long-term use, and enhances the durability of the product and user satisfaction.

[0026] In an optional embodiment, the resilient self-locking device 50 includes a connecting portion 52 and two locking portions 53. The two locking portions 53 are spaced apart at one end of the connecting portion 52 to form a stable fork-shaped or U-shaped structure, like two rails, thereby ensuring that the resilient self-locking device 50 remains stable during movement and does not twist or tilt. The connecting portion 52 is fixed to the side of the first moving component 10 and / or the second moving component 20 facing the mounting groove 41. The pawl 51 is located on the opposite side of the two locking portions 53, so that the locking force on the pawl 51 can be directly transmitted to the two locking portions 53, and then through the connecting portion 52 to the first moving component 10 and / or the second moving component 20. The force flow path is clear and efficient, ensuring that the pawl 51 always engages with the hook teeth of the ratchet 411 at the correct angle and depth, and also avoiding the risk of disengagement or stripping due to structural deformation.

[0027] In an optional embodiment, the resilient self-locking device 50 further includes a limiting part disposed on one side opposite to the two locking parts 53, and the distance between the two limiting parts is not less than the sum of the extension lengths of the two pawls 51, so as to prevent the resilient self-locking device 50 from being damaged or permanently malfunctioning due to excessive deformation.

[0028] For example, when the locking portion 53 bends due to excessive force, the two locking portions 53 will move closer to each other. Once they are close enough to contact the two limiting portions, the bending process will be forcibly stopped immediately. Therefore, by setting the distance between the two limiting portions to be no less than the sum of the extension lengths of the two pawls 51, this application ensures that when the limiting portions contact each other, the deformation of the pawls 51 and the stress on the locking portion 53 remain within a safe range, thereby avoiding permanent damage, greatly extending the service life of the elastic self-locking device 50, and ensuring the reliability of the entire paper clamping assembly 100 throughout the product's entire life cycle.

[0029] In an alternative embodiment, the width of the latching portion 53 gradually increases from the direction away from the connecting portion 52, so that the end of the latching portion 53 can still produce smooth and flexible elastic deformation when subjected to force, ensuring that the pawl 51 can slide smoothly into and out of the ratchet, providing a clear operating feel and a reliable clicking sound.

[0030] In an alternative embodiment, the connecting portion 52 has a groove structure on the side near the latching portion 53, the groove structure extending from one of the latching portions 53 to the other, reducing the material cross-sectional area of ​​the resilient self-locking device 50 at that location, making it the most easily bent part of the entire resilient self-locking device 50, so that the user needs less operating force when adjusting the width of the paper clamping assembly 100, and the feel is lighter and more comfortable.

[0031] In one alternative implementation, the width of the groove structure is adapted to the maximum width of the pawl 51 to ensure that the pawl 51 can be smoothly lifted and locked with minimal and comfortable operating force, providing clear and consistent tactile feedback. At the same time, by precisely aligning the flexible area of ​​the groove with the stress area of ​​the pawl 51, uncontrollable, high-stress micro-deformation in any other area can be avoided, thereby concentrating material fatigue damage entirely within the carefully designed arc-shaped groove, achieving the longest service life.

[0032] In an optional embodiment, the first moving component 10 includes a first limiting block 11, and the second moving component 20 includes a second limiting block 21. The connecting part 52 is disposed on the side of the first limiting block 11 and the second limiting block 21 facing the mounting groove 41, so that the first limiting block 11 and the second limiting block 21 can drive the entire elastic self-locking device 50 to move along the mounting groove 41. During the movement, the pawl 51 of the elastic self-locking device 50 engages and bounces with the ratchet 411 on the side wall of the mounting groove 41, making a clicking sound and providing a sense of stopping. When it moves to the target position, the pawl 51 is engaged in the tooth groove of the ratchet 411 under the elastic action, so that the limiting block can be mechanically locked in this position by the elastic self-locking device 50.

[0033] In an optional embodiment, the connecting part 52 is provided with a positioning groove, and the first limiting block 11 and the second limiting block 21 are provided with positioning platforms. The positioning platforms cooperate with the positioning groove to achieve precise, fast and reliable assembly between the elastic self-locking device 50 and the first limiting block 11 and the second limiting block 21, thereby ensuring the consistency of the performance of the entire self-locking system.

[0034] In an optional embodiment, the first moving component 10 includes a first rack 12, the second moving component 20 includes a second rack 22, and the transmission component 30 includes a gear structure. The first rack 12 is connected to the second rack 22 via the gear structure, so that the rotation of the gear can force one rack to move in one direction, while the other rack moves in the completely opposite direction, and the distances moved are absolutely equal. This also ensures that the center of the paper clamping component 100 is always aligned with the paper output center of the printer, thus realizing the automatic centering function.

[0035] In an alternative embodiment, a gear mounting groove 42 is formed at the center of the mounting groove 41, and the gear structure is rotatably mounted in the gear mounting groove 42.

[0036] like Figures 1 to 9 As shown, according to a second aspect of this application, this application also provides a printer including the aforementioned paper clamping assembly 100.

[0037] In the description of this application, it should be noted that, unless otherwise expressly 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 communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0038] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A paper clamping assembly for use in a printer, the printer having a paper output tray, characterized in that, The paper clamping assembly includes a first moving assembly, a second moving assembly, a transmission assembly, and a mounting bracket for mounting at the paper outlet. The mounting bracket has an open mounting groove. At least a portion of the first moving assembly, at least a portion of the second moving assembly, and the transmission assembly are all disposed in the mounting groove. The first moving assembly is connected to the second moving assembly via the transmission assembly, so that the first moving assembly and the second moving assembly can move towards each other or away from each other simultaneously. The paper clamping assembly further includes an elastic self-locking device with a pawl, which is disposed on at least one of the first moving assembly and the second moving assembly. A ratchet is provided on the inner sidewall of the mounting groove, and the ratchet is provided with a plurality of hook tooth structures along the length direction of the mounting groove. The plurality of hook tooth structures cooperate with the ratchet to limit the movement position of the first moving assembly and the second moving assembly.

2. The paper clamping assembly according to claim 1, characterized in that, The resilient self-locking device includes a connecting part and two locking parts, the two locking parts being spaced apart at one end of the connecting part, the connecting part being fixed to the side of the first moving component and / or the second moving component facing the mounting groove, and the pawl being disposed on the opposite side of the two locking parts.

3. The paper clamping assembly according to claim 2, characterized in that, The elastic self-locking device further includes a limiting part, which is disposed on one side opposite to the two locking parts, and the distance between the two limiting parts is not less than the sum of the extension lengths of the two pawls.

4. The paper clamping assembly according to claim 2, characterized in that, The width of the snap-fit ​​portion gradually increases from the direction away from the connecting portion.

5. The paper clamping assembly according to claim 2, characterized in that, The connecting portion has a groove structure on the side near the snap-fit ​​portion, and the groove structure extends from one of the snap-fit ​​portions to the other one of the snap-fit ​​portions.

6. The paper clamping assembly according to claim 5, characterized in that, The width of the groove structure is adapted to the maximum width of the pawl.

7. The paper clamping assembly according to claim 2, characterized in that, The first moving component includes a first limiting block, and the second moving component includes a second limiting block. The connecting parts are all disposed on the side of the first limiting block and the second limiting block facing the mounting groove.

8. The paper clamping assembly according to claim 7, characterized in that, The connecting part is provided with a positioning groove, and the first limiting block and the second limiting block are provided with positioning platforms, which cooperate with the positioning groove.

9. The paper clamping assembly according to claim 7, characterized in that, The first moving component includes a first rack, the second moving component includes a second rack, and the transmission component includes a gear structure, wherein the first rack is connected to the second rack via the gear structure.

10. A printer, characterized in that, Includes the paper clamping assembly as described in any one of claims 1 to 9.

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