A paper stopper, paper cassette and printer

Abstract

The utility model discloses a kind of paper stop board, paper bin and printer, it is related to printer technical field, paper stop board includes baffle main body, and first elastic arm located in the baffle main body side, the starting section of the first elastic arm is connected with the baffle main body, and the first opening downwards is formed between the first elastic arm and the baffle main body, first buckle position is equipped outside the first elastic arm, the first buckle position has to and paper bin movable clamping upwards oblique first inclined plane. So it can be installed and disassembled by single-hand operation baffle main body press and lift, specifically, press baffle main body to make first buckle position elastic inwardly, descending along paper bin side wall;After the release of elastic force, first inclined plane and paper bin clamping groove inclined plane self-lock, vertically fixed paper stop board;When lifting baffle main body, first inclined plane and paper bin clamping groove inclined plane separate and complete disassembly. To simplify the installation and disassembly process of paper stop board, improve paper width adjustment efficiency.

Description

Technical Field

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

[0002] To increase the printer's adaptability to different paper widths, printers often have an adjustable paper width stop plate in the paper tray. The paper stop plate and the paper tray body are usually detachably fixed by snap-fit. The paper tray body has multiple locking structures along the paper width direction that are adapted to the paper stop plate. Thus, the paper stop plate can be removed from one locking structure as needed and fixed to another locking structure in the paper tray, realizing the adjustment of the paper feeding width. For example, CN221605478U, a thermal printer published on August 27, 2024, discloses a paper stop plate structure. The paper stop plate has elastic arms with openings facing upwards on both sides. The arms have elastic buckles protruding away from the side of the paper stop plate body. The top of the arms has elastic arm grippers. When it is necessary to move the paper stop plate, both hands need to grasp the grippers of the elastic arms and squeeze the two elastic arm grippers inwards to release the elastic buckles from the paper tray. Then, the paper stop plate is lifted upwards while the two elastic arm grippers are squeezed inwards. Although the baffle plate has a relatively simple structure, it is rather troublesome to remove.

[0003] A simpler baffle structure is needed. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a paper baffle, a paper tray and a printer to solve the problem that the current paper baffle is relatively troublesome to pick up and put down.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a baffle plate, including a baffle body and a first spring arm located on one side of the baffle body, the starting section of the first spring arm is connected to the baffle body, and a downward first opening is formed between the first spring arm and the baffle body, and a first fastening position is provided on the outer side of the first spring arm, the first fastening position having an upward inclined first slope for movably engaging with the paper tray.

[0006] Preferably, it further includes a second spring arm located on the other side of the baffle body. The starting section of the second spring arm is connected to the baffle body, and a downward-facing second opening is formed between the second spring arm and the baffle body. A second fastener is provided on the outer side of the second spring arm, and the second fastener has an upward-sloping second inclined surface for engaging with the paper tray.

[0007] Preferably, the first fastener is located at the end of the first spring arm, and the second fastener is located at the end of the second spring arm.

[0008] Preferably, the height of the baffle plate is defined as L, the first elastic arm is connected to the baffle plate at a height of 1 / 2L to 3 / 4L, the first fastener is located at a height of 1 / 3L to 2 / 3L; the first elastic arm is connected to the baffle plate at a height of 1 / 4L to 1 / 2L, and the second fastener is located at a height of 0L to 1 / 4L.

[0009] Preferably, the baffle body, the first spring arm, and the second spring arm are integrally formed, and the baffle body has a first limiting part located on the same side of the first spring arm and below the first buckle, and the baffle body has a second limiting part located on the same side of the second spring arm and above the second buckle.

[0010] Preferably, the two side walls of the first buckle in the width direction are substantially parallel, and the two side walls of the second buckle in the width direction are substantially parallel.

[0011] This application also provides a paper container, including a container body with a paper trough and a baffle plate as described above; the container body is provided with a plurality of locking structures that are movably engaged and adapted to the baffle plate along the paper width direction.

[0012] Preferably, the baffle plate further includes a second spring arm located on the other side of the baffle body, the second spring arm having a second latch; the locking structure includes a first locking groove located on one side wall of the paper compartment and adapted to the first latch, the first locking groove having a third inclined surface that is inclined downwards and adapted to the first inclined surface; the locking structure includes a second locking groove located on the other side wall of the paper compartment and adapted to the first latch, the second locking groove having a fourth inclined surface that is inclined downwards and adapted to the second inclined surface.

[0013] Preferably, the paper tray includes a first frame having a bottom plate, two end walls and one side wall, and a second frame having a second side wall. The second frame and the first frame are detachably fixedly connected, and after being fixedly connected, the second frame and the first frame form a second slot that can accommodate the second card position.

[0014] The baffle body has a first limiting part located on the same side as the first spring arm and below the first buckle, and the baffle body has a second limiting part located on the same side as the second spring arm and above the second buckle; the locking structure also includes a first limiting groove located on one side wall of the paper compartment and adapted to the first limiting part, and a second limiting groove located on the other side wall of the paper compartment and adapted to the second limiting part.

[0015] This application also provides a printer, including a printer core and a paper tray as described above.

[0016] Compared with the prior art, the beneficial effects that this utility model can achieve are: This invention features a downward-facing first elastic arm on the side of the baffle body, with an upward-sloping first inclined surface on its outer side. This first inclined surface is used to engage with the paper tray. When the baffle plate is placed into the paper tray, pressure causes the first elastic arm to elastically deform, and its outer first latch moves inward first, descending along the side wall of the paper tray. Then, under the action of elastic force, the upward-sloping first inclined surface of the first latch interacts with the corresponding inclined surface on the paper tray's slot to form a self-locking inclined surface, thereby securing the baffle plate vertically within the paper tray's locking structure. When the baffle plate needs to be removed, simply pinch the baffle body with one hand and lift it. When the lifting force exceeds the frictional force of the self-locking inclined surface, the first elastic arm elastically deforms, causing the first inclined surface to disengage from the inclined surface of the paper tray, allowing the baffle plate to be easily removed. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the baffle paperboard according to an embodiment of the present utility model; Figure 2 for Figure 1 A structural diagram from a second perspective; Figure 3 for Figure 1 A structural diagram from a third-person perspective; Figure 4 This is a schematic diagram of the paper storage compartment in an embodiment of the present invention; Figure 5 for Figure 4 A structural schematic diagram of the second frame; Figure 6 for Figure 4 A structural schematic diagram of the second frame and the baffle plate; Figure 7 for Figure 4 A schematic diagram of the structure of the first frame and the baffle plate; Figure 8 for Figure 7 A structural diagram from a second perspective.

[0018] The components are: 1. Baffle plate; 11. Baffle body; 12. First spring arm; 121. First opening; 122. First fastener; 123. First inclined surface; 131. Second opening; 132. Second fastener; 133. Second inclined surface; 14. First limiting part; 15. Second limiting part; 2. Paper compartment; 21. Compartment body; 211. First frame; 212. Second frame; 22. First slot; 23. Second slot; 231. Fourth inclined surface; 232. Block; 24. First limiting groove; 25. Second limiting groove. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model is further described below in conjunction with specific embodiments. However, the following embodiments are only preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of this utility model.

[0020] like Figures 1-3 As shown, a baffle plate 1 includes a baffle body 11 and a first spring arm 12 located on one side of the baffle body 11. The starting section of the first spring arm 12 is connected to the baffle body 11, and a downward-facing first opening 121 is formed between the first spring arm 12 and the baffle body 11. A first fastening position 122 is provided on the outer side of the first spring arm 12. The first fastening position 122 has an upward-sloping first inclined surface 123 for movably engaging with a paper tray 2. Correspondingly, a downward-sloping third inclined surface can be provided in the corresponding paper tray 2. The first inclined surface 123 and the third inclined surface form a geometric self-locking fit. The downward direction is the limiting structure for the baffle plate 1 to be inserted downward into the paper tray 2, and the upward direction is the direction for the baffle plate 1 to be lifted upward and disengaged from the limiting structure of the paper tray 2.

[0021] Please refer to Figure 2 , Figure 4 and Figure 7 A first spring arm 12 with a downward-facing opening is provided on the side of the baffle body 11, and the outer side of the first spring arm 12 is provided with an upward-sloping first inclined surface 123. The first inclined surface 123 is used to engage with the paper tray 2. When the baffle plate 1 is placed into the paper tray 2, the pressure causes the first spring arm 12 to elastically deform, and the first latch 122 on its outer side moves inward first, and the first latch 122 moves down along the side wall of the paper tray 2. Then, under the action of elastic force, the upward-sloping first inclined surface 123 of the first latch 122 interacts with the corresponding inclined surface on the slot of the paper tray 2 to form a geometric self-locking engagement, thereby securing the baffle plate 1 in the locking structure of the paper tray 2 in the vertical direction. When it is necessary to remove the baffle plate 1, it is only necessary to pinch the baffle body 11 with one hand and lift it up. When the lifting force is greater than the frictional force of the inclined surface self-locking, the first spring arm 12 elastically deforms and the first inclined surface 123 disengages from the inclined surface of the paper tray 2, making it easy to remove the baffle plate 1.

[0022] Thus, installation and disassembly can be completed by pressing down and lifting the baffle body 11 with one hand. Specifically, pressing the baffle body 11 causes the first latch 122 to elastically move inward and descend along the side wall of the paper compartment 2; after the elastic force is released, the first inclined surface 123 self-locks with the inclined surface of the paper compartment 2 slot, vertically fixing the baffle plate 1; when the baffle body 11 is lifted, the first inclined surface 123 and the inclined surface of the paper compartment 2 slot separate, completing the disassembly. This simplifies the installation and disassembly process of the baffle plate 1 and improves the paper width adjustment efficiency.

[0023] Please refer to Figure 3 , Figure 4 , Figure 6 and Figure 7 To improve the fastening performance of the baffle plate 1 installed in the paper tray 2, the baffle plate 1 further includes a second spring arm 13 located on the other side of the baffle body 11. The starting section of the second spring arm 13 is connected to the baffle body 11, and a downward second opening 131 is formed between the second spring arm 13 and the baffle body 11. A second fastening position 132 is provided on the outer side of the second spring arm 13. The second fastening position 132 has an upward inclined second slope 133 for movably engaging with the paper tray 2.

[0024] By adding a second spring arm 13 to the other side of the baffle body 11, installation and removal can also be completed by simply pressing down and lifting the baffle body 11. Without increasing the complexity of assembly and disassembly, the presence of spring arms and latches on both sides of the baffle body 11 balances the elastic self-locking effect, enhancing the connection stability between the baffle plate 1 and the paper tray 2. This further improves the accuracy of positioning by preventing paper shifting due to uneven force on the baffle plate 1 during printing or when the paper tray 2 is tilted.

[0025] In other embodiments, the first buckle 122 and the second buckle 132 only need to be located in positions where elasticity can be obtained, such as the first buckle 122 being located in the middle of the first elastic arm 12 and the second buckle 132 being located in the middle of the second elastic arm 13.

[0026] Please refer to Figure 2 and Figure 3 Preferably, the first latch 122 is located at the end of the first spring arm 12, and the second latch 132 is located at the end of the second spring arm 13. Positioning the latches at the ends of the spring arms effectively lengthens the lever arm. When force is applied to the end of the spring arm, according to the lever principle, the latch can achieve the maximum inward displacement, making it easier to disengage from the slot. The user only needs a small pressing force to generate sufficient displacement in the latches 122 or 132, making operation easier; at the same time, applying force at the end is also less strenuous. The stress at the end of the spring arm is most dispersed, reducing root stress, improving structural durability, reducing the risk of damage due to frequent disassembly, and extending service life.

[0027] Please refer to Figure 1 Preferably, the height of the baffle plate 1 is defined as L, the first spring arm 12 is connected to the baffle plate 1 at a height of 1 / 2L to 3 / 4L, the first fastener 122 is located at a height of 1 / 3L to 2 / 3L of the baffle plate 1; the first spring arm 12 is connected to the baffle plate 1 at a height of 1 / 4L to 1 / 2L, and the second fastener 132 is located at a height of 0L to 1 / 4L of the baffle plate 1.

[0028] By defining the specific positions of the spring arm connection points (fulcrums) and the fasteners (force points) at the height of the guide plate 1, the elastic deformation curve of the spring arms is geometrically optimized. The connection point of the first spring arm 12 is relatively high (1 / 2L-3 / 4L), and the fastener 122 is centered (1 / 3L-2 / 3L), which can focus on providing the main clamping force and operating feel. The connection point of the second spring arm 13 is relatively low (1 / 4L-1 / 2L), and the fastener 132 is also very low (0L-1 / 4L), which focuses on providing stable support and positioning from the bottom to prevent tilting. Through the differentiated design of the height positions of the first spring arm 12 and the second spring arm 13, and the staggered fastener layout, the force on the guide plate 1 in the paper compartment 2 is more balanced, making it more stable and less prone to shaking after installation.

[0029] In this embodiment, the first spring arm 12 is connected to the baffle plate 1 at a height of 2 / 3L, and the first fastener 122 is located at a height of 1 / 2L of the baffle plate 1; or the first spring arm 12 is connected to the baffle plate 1 at a height of 2 / 5L, and the second fastener 132 is located at a height of 0L of the baffle plate 1. This optimizes the performance of the spring arms, prioritizing the ease of operation and effective release stroke for the first spring arm 12, while prioritizing the bottom stability and anti-tipping ability for the second spring arm 13. The second fastener 132 being located at a height of 0L of the baffle plate 1 prevents a seesaw effect. By controlling the length of the spring arms, the connection points and fasteners of the spring arms are arranged most reasonably within the limited height of the baffle plate 1, ensuring that they have sufficient elastic deformation space without being too weak and vulnerable due to excessive arm length.

[0030] Please refer to Figure 1 , Figure 7 and Figure 8 Preferably, the baffle body 11, the first spring arm 12, and the second spring arm 13 are integrally formed. The baffle body 11 and the two spring arms are formed in one step by injection molding and other processes, eliminating assembly steps and reducing the number of parts.

[0031] The baffle body 11 has a first limiting part 14 located on the same side as the first spring arm 12 and below the first fastening position 122, and a second limiting part 15 located on the same side as the second spring arm 13 and above the second fastening position 132. The first limiting part 14 is located below the first fastening position 122, and the second limiting part 15 is located above the second fastening position 132. The first limiting part 14 acts within the limiting groove of the paper tray 2, thereby limiting the baffle plate 1 at four angles within the paper tray 2, further improving the stability of the baffle plate 1 in the paper width direction.

[0032] Preferably, the two side walls of the first latch 122 in the width direction are substantially parallel, and the two side walls of the second latch 132 in the width direction are substantially parallel. The parallel side walls simultaneously define the elastic space of the first spring arm 12 and the second spring arm 13, ensuring the accuracy and stability of the engagement of the first latch 122 and the second latch 132, and also optimizing the latching movement trajectory, thereby reducing the operating force and extending the service life of the component.

[0033] Please refer to Figures 4 to 8 This application also provides a paper container 2, including a container body 21 with a paper trough and a baffle plate 1 as described above; the container body 21 is provided with a plurality of locking structures that are movably engaged and adapted to the baffle plate 1 along the paper width direction.

[0034] Please refer to Figure 3 , Figure 6 , Figure 7 and Figure 8 The locking structure includes a first locking groove 22 located on one side wall of the paper tray 2 and adapted to the first locking position 122. The first locking groove 22 has a third inclined surface that slopes downwards and is adapted to the first inclined surface 123. The first inclined surface 123 and the third inclined surface form a geometric self-locking fit. The geometric self-locking fit refers to the automatic locking state between components under specific conditions through the geometric design of mechanical parts, utilizing principles such as friction, inclined surface angle, or elastic deformation, preventing relative movement without additional locking devices. Its self-locking angle depends on the inclination angle of the inclined surface and the coefficient of friction; the smaller the inclination angle and the larger the coefficient of friction, the greater the self-locking friction force, making it more difficult to extract, but with higher stability; the larger the inclination angle and the smaller the coefficient of friction, the greater the self-locking friction force, making it easier to extract, but with lower stability.

[0035] The locking structure includes a second locking groove 23 located on the other side wall of the paper compartment 2 and adapted to the second locking position 132. The second locking groove 23 has a fourth inclined surface 231 that is inclined downwards and adapted to the second inclined surface 133. During installation, the baffle body 11 is pressed down, and the inclined surface of the locking position of the paper baffle 1 contacts the inclined surface of the locking groove, generating an inward component force. This automatically guides the spring arm to retract inwards until the locking position slides into the bottom of the locking groove of the paper compartment 2, completing the locking. During disassembly, the baffle body 11 is lifted up, and the inclined surface of the locking position and the inclined surface of the locking groove interact again, generating an upward component force. This automatically guides the spring arm to retract inwards, allowing the paper baffle 1 to be removed from the locking groove.

[0036] Please refer to Figure 4 and Figure 8Furthermore, the paper tray 2 includes a first frame 211 having a bottom plate, two end walls and one side wall, and a second frame 212 having a second side wall. The second frame 212 and the first frame 211 are detachably and fixedly connected, for example, by screws and interlocking with each other. After the second frame 212 and the first frame 211 are fixedly connected, they form a second slot that can accommodate the second slot 23.

[0037] By dividing the paper tray 2 into a first frame 211 and a second frame 212, the complex structure that forms the second slot 23 inside is easy to injection mold and demold.

[0038] Please refer to Figure 5 In this embodiment, the fourth inclined surface 231 is located on the protruding latch 232 of the second frame 212, which helps to form the fourth inclined surface 231 and makes it easier to form a fit with the second inclined surface 133.

[0039] The baffle body 11 has a first limiting part 14 located on the same side as the first spring arm 12 and below the first latch 122, and a second limiting part 15 located on the same side as the second spring arm 13 and above the second latch 132. The locking structure also includes a first limiting groove 24 located on one side wall of the paper tray 2 and adapted to the first limiting part 14, and a second limiting groove 25 located on the other side wall of the paper tray 2 and adapted to the second limiting part 15. The cooperation between the limiting part and the limiting groove ensures the stability of the baffle plate 1 along the width direction of the printing paper, making its operation more reliable.

[0040] This application also provides a printer, including a printer core and a paper tray 2 as described above. The user's operations of changing paper and adjusting paper width become very simple and quick, providing a good user experience; the paper stop 1 is firmly fixed, ensuring accurate paper feed during printing, reducing the risk of paper jams, and ultimately improving print quality and overall machine reliability.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A type of baffle plate, characterized in that: It includes a baffle body and a first spring arm located on one side of the baffle body. The starting section of the first spring arm is connected to the baffle body, and a downward first opening is formed between the first spring arm and the baffle body. A first fastener is provided on the outer side of the first spring arm, and the first fastener has an upwardly inclined first slope for movably engaging with the paper tray.

2. The baffle plate according to claim 1, characterized in that: It also includes a second spring arm located on the other side of the baffle body. The starting section of the second spring arm is connected to the baffle body, and a downward second opening is formed between the second spring arm and the baffle body. A second fastener is provided on the outer side of the second spring arm. The second fastener has an upwardly inclined second slope for engaging with the paper tray.

3. The baffle plate according to claim 2, characterized in that: The first fastener is located at the end of the first spring arm, and the second fastener is located at the end of the second spring arm.

4. The baffle plate according to claim 2, characterized in that: The height of the baffle plate is defined as L. The first elastic arm is connected to the baffle plate at a height of 1 / 2L to 3 / 4L. The first fastener is located at a height of 1 / 3L to 2 / 3L of the baffle plate. The first elastic arm is connected to the baffle plate at a height of 1 / 4L to 1 / 2L. The second fastener is located at a height of 0L to 1 / 4L of the baffle plate.

5. The baffle plate according to claim 4, characterized in that: The baffle body, the first spring arm, and the second spring arm are integrally formed, and the baffle body has a first limiting part located on the same side of the first spring arm and below the first buckle, and the baffle body has a second limiting part located on the same side of the second spring arm and above the second buckle.

6. The baffle plate according to claim 2, characterized in that: The two side walls of the first buckle in the width direction are approximately parallel, and the two side walls of the second buckle in the width direction are approximately parallel.

7. A paper storage container, characterized in that: It includes a compartment with a paper trough and a paper baffle as described in any one of claims 1 to 6; the compartment is provided with a plurality of locking structures that are movably engaged and adapted to the paper baffle along the paper width direction.

8. The paper hopper according to claim 7, characterized in that: The baffle plate also includes a second spring arm located on the other side of the baffle body, the second spring arm having a second latch; the locking structure includes a first locking groove located on one side wall of the paper compartment and adapted to the first latch, the first locking groove having a third inclined surface that is inclined downwards and adapted to the first inclined surface; the locking structure includes a second locking groove located on the other side wall of the paper compartment and adapted to the first latch, the second locking groove having a fourth inclined surface that is inclined downwards and adapted to the second inclined surface.

9. The paper silo according to claim 8, characterized in that: The paper tray includes a first frame having a bottom plate, two end walls and one side wall, and a second frame having a second side wall. The second frame and the first frame are detachably fixedly connected, and the second frame and the first frame form a second slot that can accommodate the second slot after being fixedly connected. The baffle body has a first limiting part located on the same side as the first spring arm and below the first buckle, and the baffle body has a second limiting part located on the same side as the second spring arm and above the second buckle; the locking structure also includes a first limiting groove located on one side wall of the paper compartment and adapted to the first limiting part, and a second limiting groove located on the other side wall of the paper compartment and adapted to the second limiting part.

10. A printer, characterized in that: It includes a printer core and a paper tray as described in any one of claims 7 to 9.

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