Paper limiting device and printer

Abstract

The utility model discloses a paper limiting device and printer, the paper limiting device comprises a paper cabin, paper limiting sheets, guide grooves and a linkage structure, the paper cabin is arranged on a shell, the two paper limiting sheets are arranged in the paper cabin, the guide grooves are arranged on two side frames of the paper cabin, two ends of the paper limiting sheets are in sliding connection with the guide grooves, and the linkage structure is arranged on the shell. The linkage structure is connected with the two paper limiting pieces and used for enabling the two paper limiting pieces to synchronously move close to or away from each other. The guide grooves are formed in the two sides of the paper bin, the paper limiting piece is in sliding connection with the guide grooves, and therefore the paper limiting piece can be more stable in the moving process, and due to the fact that the guide grooves are located in the two sides of the paper limiting piece, compared with an existing paper limiting piece with only one middle guide groove, the paper limiting piece can be more stable in the moving process.

Description

Technical Field

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

[0002] In the field of printing equipment, the printer paper limiter is a crucial component ensuring precise paper positioning and transport, and its performance directly impacts print quality and efficiency. Currently, most printer paper limiters on the market employ a double-limiter design, adjusting the distance between the two limiters to accommodate different paper widths. However, these limiters typically only have one guide groove located in the middle, a design that introduces significant instability and wobbling during paper transport. Especially when the paper is long or the stress point is at the end, the single guide groove position makes the paper prone to deviating from its intended path, leading to frequent printing misalignments, paper jams, and other malfunctions. Therefore, we provide a paper limiting device and printer to address these issues. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a paper limiting device and printer.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A paper limiting device, comprising:

[0006] Paper compartment, which is formed on the shell;

[0007] Paper limiting pieces, two of which are located inside the paper compartment;

[0008] The guide groove is formed on both sides of the paper tray, and both ends of the paper limiting sheet are slidably connected to the guide groove;

[0009] A linkage structure is provided, which is connected to the two paper limiting sheets. The linkage structure is used for the two paper limiting sheets to move synchronously closer to each other or further apart.

[0010] Preferably, both the paper limiting sheet and the surface on which the guide groove slides are provided with raised strips.

[0011] Preferably, the linkage structure includes two racks respectively connected to the two paper limiting sheets, and a gear is connected between the two racks. The gear is rotatably mounted on the shell at the back of the paper compartment.

[0012] Preferably, two clearance grooves adapted to the rack are provided on the inner wall of the paper bin. The connection between the rack and the paper limiting piece is slidably connected to the clearance grooves, and the connection between the rack and the paper limiting piece is partially inserted through the clearance grooves into the paper bin.

[0013] Preferably, one of the racks has a slot, a tension spring is hung in the slot, and the other end of the tension spring is hung on the housing.

[0014] Preferably, a fixing plate is installed on each of the two paper sheets facing each other.

[0015] Preferably, the paper sheet is provided with anti-slip protrusions.

[0016] Preferably, the anti-slip protrusion is cylindrical, elliptical, or polygonal.

[0017] This application also provides a printer that includes the paper limiting device described in any of the above claims.

[0018] This utility model has the following advantages:

[0019] 1. This utility model provides guide grooves on both sides of the paper tray, and the paper limiting sheet is slidably connected to the guide grooves, which makes the paper limiting sheet more stable during movement. Since the guide grooves are located on both sides of the paper limiting sheet, compared with the existing paper limiting sheet which only has one middle guide groove, the paper limiting sheet of this application is more stable during movement.

[0020] 2. This utility model provides a raised strip on the surface where the paper sheet slides and the guide groove slides. The raised strip reduces the contact area with the guide groove surface, making the sliding smoother and preventing jamming during movement.

[0021] 3. This utility model sets a gear between two racks, and the gear meshes with the two racks, so that when one rack moves with the paper limiter, the other paper limiter moves with it, thus realizing the linkage between the two paper limiters. Attached Figure Description

[0022] Figure 1 This is a first-view structural diagram of the paper limiting device of this utility model.

[0023] Figure 2 This is a second-view structural diagram of the paper limiting device of this utility model.

[0024] Figure 3 This is a first-view schematic diagram of the linkage structure of this utility model.

[0025] Figure 4 This is a second-view schematic diagram of the linkage structure of this utility model.

[0026] Figure 5 This is a cross-sectional view of the paper-limiting structure of this utility model.

[0027] Figure 6 This utility model Figure 5 Enlarged structural diagram at point A in the middle.

[0028] Figure 7 This utility model Figure 5 Enlarged structural diagram at point B.

[0029] In the diagram, 100 is the paper tray; 200 is the paper limiter; 300 is the guide groove; 400 is the linkage structure; 410 is the rack; 420 is the gear; 500 is the clearance groove; 600 is the tension spring; 700 is the slot; 800 is the fixing plate; 900 is the anti-slip protrusion; and 1000 is the raised strip. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] like Figure 1 — Figure 7 The example shown.

[0033] A paper limiting device includes a paper bin 100, paper limiting pieces 200, a guide groove 300, and a linkage structure 400. Specifically, the paper bin 100 is formed on a shell, the two paper limiting pieces 200 are located inside the paper bin 100, the guide groove 300 is formed on the two side frames of the paper bin 100, and both ends of the paper limiting pieces 200 are slidably connected to the guide groove 300. The linkage structure 400 is connected to the two paper limiting pieces 200, and the linkage structure 400 is used for the two paper limiting pieces 200 to move synchronously closer to each other or further apart.

[0034] Please see Figure 1 , Figure 2 , Figures 5 to 7As shown, in this embodiment, a guide groove 300 is provided at each end of the side frame on both sides of the paper tray 100. At this time, the two sides of the paper limiting piece 200 at each end are slidably connected with the guide groove 300. Therefore, when the paper limiting piece 200 at each end moves, the guide groove 300 on both sides is slidably connected with it, making each paper limiting piece 200 more stable during movement.

[0035] Furthermore, in order to achieve simultaneous position adjustment of the two paper limit pieces 200, this application sets up a linkage structure 400 to achieve linkage between the two paper limit pieces 200. When one of the paper limit pieces 200 is moved, the other paper limit piece 200 will move synchronously, and the two paper limit pieces 200 will move closer to each other or further away from each other at the same time, so as to achieve synchronous adjustment and movement of the two paper limit pieces 200.

[0036] Both the limiting paper sheet 200 and the guide groove 300 have raised strips 1000 on their sliding surfaces.

[0037] Please continue reading. Figure 6 and Figure 7 As shown, each paper limiting piece 200 is provided with a protrusion 1000 on the sliding surface between it and the guide grooves 300 on both sides, thereby reducing the friction between the paper limiting piece 200 and the guide groove 300, reducing the resistance when the paper limiting piece 200 moves, and making the adjustment and movement of the paper limiting piece 200 more stable.

[0038] In this embodiment, the protrusion 1000 and the paper sheet 200 can be connected by an integral molding method, such as injection molding.

[0039] The linkage structure 400 includes two racks 410 respectively connected to the two paper limiting pieces 200, and a gear 420 connected between the two racks 410. The gear 420 is rotatably mounted on the shell on the back of the paper tray 100.

[0040] Please see Figure 3 and Figure 4 As shown, in this embodiment, in order to enable the two paper limiting pieces 200 to move synchronously, both paper limiting pieces 200 are mounted on racks 410, and a gear 420 is provided between the two racks 410. The gear 420 is meshed with the two racks 410 for transmission. When one paper limiting piece 200 moves away from or closer to the other paper limiting piece 200, the other paper limiting piece 200 also moves because the two racks 410 are meshed with the gear 420 for transmission. Specifically, the two paper limiting pieces 200 move closer to or away from each other.

[0041] The inner wall of the paper bin 100 has two clearance grooves 500 that are adapted to the rack 410. The connection between the rack 410 and the paper limiting piece 200 is slidably connected to the clearance grooves 500, and the connection between the rack 410 and the paper limiting piece 200 is partially inserted through the clearance grooves 500 into the paper bin 100.

[0042] See Figure 1 and Figure 2 As shown, in order to enable the two paper limiters 200 to be located within the paper bin 100 and to enable the two paper limiters 200 to be connected by transmission, two clearance grooves 500 adapted to the rack 410 are provided on the outer shell of the paper bin 100. The length of the clearance grooves 500 is sufficient to allow for clearance of the clearance groove 500's movement distance. Specifically, the component at the connection between the rack 410 and the paper limiter 200 is slidably connected to the clearance grooves 500. This allows the clearance grooves 500 to provide guidance for the movement of the paper limiters 200 and the rack 410 to a certain extent, thereby further stabilizing the movement of the paper limiters 200.

[0043] Please continue reading. Figure 1 and Figure 2 As shown, two racks 410 are located on the back of the paper tray 100 housing, and a gear 420 is rotatably mounted on the back of the paper tray 100 housing. The gear 420 is located between the two racks 410, and the two racks 410 move synchronously through the gear 420.

[0044] In this embodiment, one of the racks 410 has a slot 700, and a tension spring 600 is hung in the slot 700. The other end of the tension spring 600 is hung on the housing.

[0045] Please see Figure 2 , Figure 3 as well as Figure 4 As shown, in this embodiment, the shell mentioned above can also be called a housing, which means the housing that forms the paper tray 100. In order to ensure that the two paper limiting pieces 200 are always close to each other and clamp the printing paper roll located between them, a corresponding tension spring 600 is hung on one of the racks 410. The other end of the tension spring 600 is connected to the housing where the paper tray 100 is located. The elastic force of the tension spring 600 drives one of the paper limiting pieces 200 to move towards the other paper limiting piece 200. Under the transmission action of the two racks 410 through the gear 420, the two paper limiting pieces 200 move closer to each other, thereby clamping the paper roll located between the two paper limiting pieces 200.

[0046] Please continue reading. Figure 2 , Figure 3 as well as Figure 4As shown, a slot 700 is provided on one of the racks 410, and the slot 700 is used for fixing the end of the tension spring 600, and then the other end of the tension spring 600 is hung on the housing where the paper hopper 100 is located.

[0047] See Figure 1 , Figure 3 , Figure 5 As shown, a fixing plate 800 is installed on each of the two paper strips 200 facing each other, and the fixing plate 800 directly contacts the paper roll to fix the paper roll.

[0048] Please see Figure 1 , Figure 3 and Figure 5 As shown, the limiting paper sheet 200 is provided with anti-slip protrusions 900. In this embodiment, in order to provide a force point for the hand during the movement of the limiting paper sheet 200, anti-slip protrusions 900 are provided on the limiting paper sheet 200. The anti-slip protrusions 900 increase the friction between the paper sheet and the fingers and prevent slipping.

[0049] Specifically, the anti-slip protrusion 900 is cylindrical, elliptical, or polygonal. The polygon can be triangular, quadrilateral, pentagonal, hexagonal, or other shapes. In this embodiment, the anti-slip protrusion 900 is cylindrical.

[0050] This application also provides a printer that includes any of the paper limiting devices described above.

[0051] The working process of this utility model is as follows: By setting guide grooves 300 that are slidably connected to the paper limiting sheet 200 on both sides of the paper tray 100, the paper limiting sheet 200 is more stable during movement. The linkage structure 400 enables the two paper limiting sheets 200 to move synchronously, and the tension spring 600 gives the two paper limiting sheets 200 a force to move closer to each other, thereby clamping the paper roll located between them.

[0052] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A paper limiting device, characterized in that, include: Paper hopper (100), said paper hopper (100) being formed on the housing; Paper sheets (200), two of the paper sheets (200) are located inside the paper bin (100); Guide groove (300) is formed on both sides of the paper tray (100), and both ends of the paper limiting piece (200) are slidably connected to the guide groove (300); A linkage structure (400) is connected to two paper limiting pieces (200), and the linkage structure (400) is used to make the two paper limiting pieces (200) move synchronously closer to each other or further apart.

2. The paper limiting device according to claim 1, characterized in that: The paper limiting sheet (200) and the guide groove (300) are both provided with raised strips (1000) on their sliding surfaces.

3. The paper limiting device according to claim 1, characterized in that: The linkage structure (400) includes two racks (410) respectively connected to the two paper limiting pieces (200), and a gear (420) is connected between the two racks (410). The gear (420) is rotatably mounted on the shell on the back of the paper tray (100).

4. A paper limiting device according to claim 3, characterized in that: The inner wall of the paper bin (100) has two clearance grooves (500) adapted to the rack (410). The connection between the rack (410) and the paper limiting piece (200) is slidably connected to the clearance grooves (500), and the connection between the rack (410) and the paper limiting piece (200) is partially inserted through the clearance grooves (500) into the paper bin (100).

5. A paper limiting device according to claim 3, characterized in that: One of the racks (410) has a slot (700) on it, and a tension spring (600) is hung on the slot (700). The other end of the tension spring (600) is hung on the housing.

6. A paper limiting device according to claim 1, characterized in that: A fixing plate (800) is installed on each of the two paper limiting pieces (200) facing each other.

7. A paper limiting device according to claim 1, characterized in that: The paper sheet (200) is provided with anti-slip protrusions (900).

8. A paper limiting device according to claim 7, characterized in that: The anti-slip protrusion (900) is cylindrical, elliptical, or polygonal.

9. A printer, characterized in that: Includes the paper limiting device as described in any one of claims 1 to 8.

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