Printer roll paper limiting structure and portable printer

Abstract

The utility model relates to the field of printers, in particular to a printer roll paper limiting structure and a portable printer. The device comprises a bottom frame and two clamping plate assemblies. The bottom frame comprises a paper bin, a first clearance area and a second clearance area are arranged at the two ends of the paper bin respectively, a plurality of parallel narrow grooves are formed in the bottom face of the first clearance area, a wide groove is formed in the bottom face of the second clearance area, and the narrow grooves and the wide groove are perpendicular to the axial direction of the paper bin. The clamping plate assemblies are detachably and fixedly installed at the two ends of the roll paper, the roll paper is arranged in the paper bin, the clamping plate assembly at one end of the roll paper is in lap joint with the wide groove and can slide in the wide groove, and the clamping plate assembly at the other end of the roll paper is clamped into the narrow groove to limit the roll paper. The limiting structure is simple in design, the movable clamping plate assembly is clamped into different narrow grooves, roll paper of different widths can be limited, the first receding area and the second receding area are arranged, and the roll paper can be conveniently replaced from the upper portion.

Description

Technical Field

[0001] The utility model relates to the field of printers, in particular to a printer roll paper limiting structure. Background Art

[0002] Currently, the portable A4 wide-format thermal printers on the market need to be designed in a sophisticated manner due to the limited space. There is no space to install a linkage width adjustment structure, and it is difficult to be compatible with rolls of paper of different widths. Moreover, when changing the roll paper, it is often necessary to flip the printer over to pour out the roll paper, which is inconvenient to change the roll paper. Utility Model Content

[0003] In order to overcome the above problems, the utility model provides a printer paper roll limiting structure. The technical solution adopted by the utility model to solve the technical problem is:

[0004] A printer paper roll limiting structure comprises a bottom frame and two cardboard assemblies; the bottom frame comprises a paper bin, a first air avoidance area and a second air avoidance area are respectively arranged at two ends of the paper bin, a plurality of mutually parallel narrow grooves are arranged on the bottom surface of the first air avoidance area, a wide groove is arranged on the bottom surface of the second air avoidance area, and both the narrow grooves and the wide grooves are perpendicular to the axial direction of the paper bin; the cardboard assemblies are detachably fixedly installed at two ends of the paper roll, the paper roll is placed in the paper bin, the cardboard assembly at one end of the paper roll overlaps the wide groove and can slide in the wide groove, and the cardboard assembly at the other end of the paper roll is clamped into the narrow groove to limit the paper roll; the movable cardboard assembly is clamped into different narrow grooves to limit paper rolls of different widths.

[0005] Furthermore, the card assembly includes a coaxially arranged pin, a baffle and a card shaft, the pin passes through the hollow shaft of the paper roll and fits tightly with the paper roll, the baffle has a diameter larger than the diameter of the pin and is located between the pin and the card shaft, and the card shaft is radially provided with a flange, the flange can be inserted into the narrow groove to limit the position, and the flange can overlap the wide groove for sliding.

[0006] Furthermore, a limit slot is provided on the bottom frame, the limit slot is close to the two ends of the paper bin, and a limit piece is provided in the limit slot. The paper output end of the paper roll passes between the limit pieces to limit the deviation of the paper output end; the limit piece can slide in the limit slot to adapt to paper rolls of different widths.

[0007] Furthermore, a locking position is provided in the limiting groove to limit the limiting member from sliding in the limiting groove.

[0008] Furthermore, the limiting member includes a sliding portion and a limiting portion, the sliding portion can be slidably arranged in the limiting groove, and the limiting portion is fixed to the sliding portion; the sliding portion includes a deformation end, and after the limiting member is subjected to force, the deformation end can be elastically deformed and locked to allow the limiting member to slide.

[0009] Furthermore, a stopper protrusion is provided on the limiting portion, and the stopper protrusion is located above the moving path of the paper outlet end of the paper roll to limit the paper outlet end of the paper roll from leaving the limiting component.

[0010] A portable printer comprises any one of the above-mentioned paper roll limiting structures.

[0011] Furthermore, it also includes an upper cover, which is covered on the bottom frame, and a rubber roller assembly and a print head assembly are arranged on the upper cover.

[0012] The beneficial effects of the utility model are:

[0013] The paper roll limiting structure includes a bottom frame and two cardboard assemblies; the bottom frame includes a paper bin, and a first air avoidance area and a second air avoidance area are respectively arranged at both ends of the paper bin, a plurality of mutually parallel narrow grooves are arranged on the bottom surface of the first air avoidance area, and a wide groove is arranged on the bottom surface of the second air avoidance area, and the narrow grooves and the wide grooves are both perpendicular to the axial direction of the paper bin; the cardboard assembly is detachably fixedly installed at both ends of the paper roll, and the paper roll is placed in the paper bin, and the cardboard assembly at one end of the paper roll overlaps the wide groove and can slide in the wide groove, and the cardboard assembly at the other end of the paper roll is inserted into the narrow groove to limit the paper roll; the limiting structure is simply designed, and the moving cardboard assembly is inserted into different narrow grooves to limit paper rolls of different widths, and the first air avoidance area and the second air avoidance area are set, so that the paper roll can be replaced conveniently from the top. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, wherein:

[0015] Figure 1 is an exploded view of a portable printer;

[0016] Figure 2 It is a three-dimensional view and a partial enlarged view of the bottom frame of the utility model;

[0017] Figure 3 This is a top three-dimensional view of the paper roll limiting structure of the utility model;

[0018] Figure 4 It is an enlarged view of area A of the utility model;

[0019] Figure 5 It is an enlarged view of area B of the utility model;

[0020] Figure 6 This is a three-dimensional upward view of the paper roll limiting structure of the utility model;

[0021] Figure 7 It is an enlarged view of the C area of ​​the utility model;

[0022] Figure 8 This is a three-dimensional view of the paper roll & cardboard assembly of the utility model;

[0023] Fig. 9 It is a three-dimensional view of the limiting member of the utility model.

[0024] Figure number marking:

[0025] 100, bottom frame; 101, paper bin; 102, first avoidance area; 103, second avoidance area; 104, narrow groove; 105, wide groove; 106, limit groove; 107, limit member; 1071, sliding part; 1072, limit part; 1073, deformation end; 1074, stop convex; 108, clamping position;

[0026] 200, card plate assembly; 201, latch; 202, baffle; 203, card shaft; 204, flange;

[0027] 300, paper roll; 301, hollow shaft; 302, paper outlet;

[0028] 400, upper cover;

[0029] 500, rubber roller assembly;

[0030] 600. Print head assembly. DETAILED DESCRIPTION

[0031] In order to better understand the purpose, structure and function of the utility model, the specific embodiment of the utility model "a paper roll limiting structure" is further described in detail below in conjunction with the accompanying drawings.

[0032] See also Figures 1 to 8 In this embodiment, the printer paper roll limiting structure includes a bottom frame 100 and two cardboard assemblies 200; the bottom frame 100 includes a paper bin 101, and the two ends of the paper bin 101 are respectively provided with a first air avoidance area 102 and a second air avoidance area 103, the bottom surface of the first air avoidance area 102 is provided with a plurality of narrow grooves 104 that are parallel to each other and are equidistant, and the bottom surface of the second air avoidance area 103 is provided with a wide groove 105, and the narrow grooves 104 and the wide grooves 105 are both perpendicular to the axial direction of the paper bin 101; the cardboard assembly 200 is detachably fixedly installed at both ends of the paper roll 300, and the cardboard assembly 200 is preferably plugged and fixed to both ends of the paper roll 300. The ends are connected to the two ends of the paper roll 300 by threads; when the paper roll 300 is placed in the paper bin 101, the card assembly 200 at one end of the paper roll 300 overlaps the wide groove 105 and can slide in the wide groove 105, and its sliding direction is parallel to the axial direction of the paper roll 300, and the card assembly 200 at the other end of the paper roll 300 is inserted into the narrow groove 104 to limit the paper roll 300; the moving card assembly 200 is inserted into different narrow grooves 104 to limit paper rolls 300 of different widths; a first avoidance area 102 and a second avoidance area 103 are set at both ends of the paper bin 101 to facilitate the placement and removal of the paper roll 300.

[0033] For more details, see Figure 8In this embodiment, the card assembly 200 includes a coaxially arranged pin 201, a baffle 202 and a card shaft 203. The pin 201 can penetrate into the hollow shaft 301 of the paper roll 300 and fit tightly with the paper roll 300. The diameter of the baffle 202 is greater than the diameter of the pin 201 to limit the depth of the pin 201 penetrating into the hollow shaft 301 of the paper roll 300. The baffle 202 is located between the pin 201 and the card shaft 203. The card shaft 203 is radially provided with a flange 204. The flange 204 can be inserted into the narrow groove 104 to limit the movement of the card assembly 200. The flange 204 can overlap in the wide groove 105 and slide in the wide groove 105. The two cardboard assemblies 200 are respectively fixed at the two ends of the paper roll 300, and can adapt to paper rolls of different widths. Then, the paper roll 300 with the cardboard assembly 200 installed is placed in the paper bin 101, and the flange 204 at one end of the paper roll 300 overlaps in the wide and narrow grooves 105, and can slide axially in the wide groove 105 along the paper roll 300 to cooperate with the flange 204 at the other end of the paper roll 300 to be adjusted to be stuck in the narrow groove 104, so as to facilitate the limiting of paper rolls 300 of different widths.

[0034] See also Figure 3-Figure 7 In this embodiment, a limiting groove 106 is further provided on the bottom frame 100. The limiting groove 106 is close to the two ends of the paper bin 101. A limiting member 107 is provided in the limiting groove 106. The paper output end 302 of the paper roll 300 passes through between the limiting members 107. The limiting member 107 can prevent the paper output end 302 from deviating left and right when the paper is output and printed, thereby further ensuring the quality of printing; more specifically, the limiting member 107 can slide in the limiting groove 106, and the width between the two limiting members 107 can be adjusted by sliding to adapt to the paper rolls 300 of different widths.

[0035] For more details, see Figure 7 A stopper 108 is provided in the limit groove 106, and the stopper 108 divides the limit groove 106 into several areas. The limit member 107 cannot easily pass through the stopper 108 and reach another area from one area. This can limit the sliding of the limit member 107 during the printing process and enhance the limiting effect of the limit member 107.

[0036] For more details, see Figure 7 and Fig. 9 In this embodiment, the limiter 107 includes a sliding portion 1071 and a limiter 1072. The sliding portion 1071 is slidably disposed in the limiter slot 106, and the limiter 1072 is fixed to the sliding portion 1071; the sliding portion 1071 includes a deformation end 1073. When the limiter 107 is subjected to force and reaches the deformation critical point of the deformation end 1073, the deformation end 1073 can be elastically deformed. The limiter 107 slides and passes through the clamping position 108, from one area of ​​the limiter slot 106 to another area, so as to realize the function of sliding to adjust the distance between the limiters 107, so as to limit the paper outlet end 302 of the roll paper 300 with different widths.

[0037] For more details, see Figure 4 , Figure 5 and Fig. 9 In this embodiment, a stop protrusion 1074 is provided on the limiting portion 1072. The stop protrusion 1074 is located above the moving path of the paper outlet end 302 of the paper roll 300. The stop protrusion 1074 can limit the paper outlet end 302 of the paper roll 300 to prevent it from deviating upward and detaching from the limiting member 107 during the printing process. The limiting member 107 can further ensure the limiting effect of the paper outlet end 302 of the paper roll 300 to ensure the printing quality.

[0038] See also Figure 1 , which is a portable printer, including the above-mentioned paper roll limiting structure, and also includes an upper cover 400, the upper cover 400 covers the bottom frame 100, and a rubber roller assembly 500 and a print head assembly 600 are arranged on the upper cover 400. The design is exquisite and simple, and the portability is high.

[0039] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

Claims

1. A printer roll paper limiting structure, characterized in that: It comprises a bottom frame (100) and two cardboard assemblies (200); wherein: The bottom frame (100) comprises a paper bin (101), wherein a first air avoidance area (102) and a second air avoidance area (103) are respectively arranged at two ends of the paper bin (101), a plurality of mutually parallel narrow grooves (104) are arranged on the bottom surface of the first air avoidance area (102), and a wide groove (105) is arranged on the bottom surface of the second air avoidance area (103), and the narrow grooves (104) and the wide grooves (105) are both perpendicular to the axial direction of the paper bin (101); The cardboard assembly (200) is detachably fixedly mounted on both ends of the paper roll (300); the paper roll (300) is placed in the paper bin (101); the cardboard assembly (200) at one end of the paper roll (300) overlaps the wide groove (105) and can slide in the wide groove (105); the cardboard assembly (200) at the other end of the paper roll (300) is inserted into the narrow groove (104) to limit the position of the paper roll (300); the cardboard assembly (200) is moved to insert into different narrow grooves (104) to limit the position of paper rolls (300) of different widths.

2. A printer paper roll limiting structure according to claim 1, characterized in that: The card assembly (200) comprises a coaxially arranged latch (201), a baffle (202) and a card shaft (203); the latch (201) penetrates into the hollow shaft (301) of the paper roll (300) and is tightly matched with the paper roll (300); the baffle (202) has a diameter greater than that of the latch (201) and is located between the latch (201) and the card shaft (203); the card shaft (203) is radially provided with a flange (204); the flange (204) can be inserted into the narrow groove (104) to limit the position; and the flange (204) can overlap the wide groove (105) to slide.

3. A printer roll paper limiting structure according to claim 1, characterized in that: The bottom frame (100) is also provided with a limiting groove (106), the limiting groove (106) being close to the two ends of the paper bin (101), and a limiting member (107) being provided in the limiting groove (106), and the paper outlet end (302) of the paper roll (300) passes through between the limiting members (107) to limit the deviation of the paper outlet end (302); the limiting member (107) can slide in the limiting groove (106) to adapt to paper rolls (300) of different widths.

4. A printer roll paper limiting structure according to claim 3, characterized in that: A locking position (108) is provided in the limiting groove (106) to limit the limiting member (107) from sliding in the limiting groove (106).

5. A printer paper roll limiting structure according to claim 4, characterized in that: The limiting member (107) comprises a sliding portion (1071) and a limiting portion (1072); the sliding portion (1071) is slidably arranged in the limiting groove (106); the limiting portion (1072) is fixedly connected to the sliding portion (1071); the sliding portion (1071) comprises a deformation end (1073); after the limiting member (107) is subjected to force, the deformation end (1073) can be elastically deformed and pass through the clamping position (108) to enable the limiting member (107) to slide.

6. A printer roll paper limiting structure according to claim 5, characterized in that: The limiting portion (1072) is provided with a stop protrusion (1074), and the stop protrusion (1074) is located above the moving path of the paper outlet end (302) of the paper roll (300) to limit the paper outlet end (302) of the paper roll (300) from escaping from the limiting member (107).

7. A portable printer, characterized in that: It comprises the paper roll limiting structure described in any one of claims 1 to 6.

8. A portable printer according to claim 7, characterized in that: It also comprises an upper cover (400), the upper cover (400) covers the bottom frame (100), and a rubber roller assembly (500) and a print head assembly (600) are arranged on the upper cover (400).

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