Novel paper roll frame structure and printer

Abstract

The utility model discloses a novel paper roll frame structure and a printer, and the novel paper roll frame structure comprises a mounting seat, a connecting arm, a paper shaft, and a roll paper fixing structure. The mounting seat is provided with at least two mounting parts for mounting the connecting arms; the setting positions of the two mounting parts are different; the paper shaft comprises a shaft core and a sleeve; the two or more sleeves with different lengths are detachably connected along the length direction; two or more sleeves with different lengths are sleeved on the shaft core; one end of the shaft core is detachably connected with a mounting part through a connecting arm, and the other end of the shaft core is detachably connected with the roll paper fixing structure; and the distance between the roll paper fixing structure and the connecting arm is adjustable. The novel paper roll frame structure disclosed by the utility model solves the problem that the existing printer paper roll frame cannot adapt to diversified use requirements of users due to single model and single mounting position of the roll paper core supported and mounted.

Description

Technical Field

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

[0002] Currently, most printer paper roll holders on the market can only support a single model of paper roll core with a fixed paper shaft diameter and paper width. In addition, existing paper roll holders generally only support single-position installation and cannot adapt to users' diverse usage needs. Utility Model Content

[0003] In order to solve the above technical problems, the present invention provides a novel paper roll holder structure and a printer, wherein the novel paper roll holder structure includes a mounting seat, a connecting arm, a paper shaft and a paper roll fixing structure;

[0004] The mounting seat is provided with at least two mounting portions for mounting the connecting arm; the two mounting portions are arranged at different positions;

[0005] The paper shaft comprises a shaft core and a sleeve; two or more sleeves of different lengths are detachably connected along the length direction; two or more sleeves of different lengths are sleeved on the shaft core;

[0006] One end of the shaft core is detachably connected to a mounting portion via a connecting arm, and the other end is detachably connected to a paper roll fixing structure; the distance between the paper roll fixing structure and the connecting arm is adjustable.

[0007] Preferably, one end of the shaft core is provided with a plurality of first limiting grooves along the length direction, and the other end is provided with a plurality of second limiting grooves along the length direction; the paper roll fixing structure is engaged with a first limiting groove; and the sleeve is engaged with a second limiting groove.

[0008] Preferably, the sleeve includes a first sleeve and a second sleeve; the length of the first sleeve is greater than the length of the second sleeve;

[0009] One end of the first sleeve is provided with a first barb, and the other end is provided with a second barb fixing portion; one end of the second sleeve is provided with a second barb;

[0010] The first inverted hook can be snapped into the second limiting groove; the second inverted hook can be snapped into the second inverted hook fixing portion.

[0011] Preferably, the mounting portion of the mounting seat for mounting the connecting arm includes a first mounting portion and a second mounting portion; the first mounting portion and the second mounting portion are respectively arranged on both sides of the mounting seat.

[0012] Preferably, the connecting arm includes a first connecting arm and a second connecting arm; one end of the first connecting arm is detachably connected to a mounting portion, and the other end is detachably connected to the shaft core through the second connecting arm.

[0013] Preferably, the first connecting arm is provided with a second mounting through hole and a third mounting through hole; a plurality of the third mounting through holes are dispersedly arranged around the second mounting through hole with the second mounting through hole as the center;

[0014] A fourth mounting through hole and a mounting notch are adjacently provided at one end of the second connecting arm; the distance between the mounting notch and the fourth mounting through hole is the same as the distance between the third mounting through hole and the second mounting through hole; the fourth mounting through hole and the second mounting through hole are detachably connected by a first fastener;

[0015] The mounting notch is detachably connected to at least one third mounting through hole via a second fastener.

[0016] Preferably, the paper roll fixing structure includes a paper stopper and a plurality of paper stopper blades; the shaft core passes through the paper stopper and is detachably connected to the paper stopper; a plurality of paper stopper blades are radiated from the side wall of the paper stopper with the shaft core as the center; and the paper stopper blades are detachably connected to the paper stopper.

[0017] Preferably, the paper shaft is provided with a paper end detection device.

[0018] Preferably, the distance between the detection position of the paper end detection device and the paper axis is adjustable.

[0019] The present invention further provides a printer which adopts any of the above described novel paper roll holder structures.

[0020] The novel paper roll holder structure provided by the utility model solves the problem that the existing printer paper roll holder supports and installs a single paper roll core model and a single installation position, and cannot adapt to the diverse usage needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional diagram of the novel paper roll holder structure provided by an embodiment of the utility model;

[0022] Figure 2 for Figure 1 Another perspective view;

[0023] Figure 3 This is an exploded view of the paper axis;

[0024] Figure 4 It is a three-dimensional diagram of the paper roll fixing structure;

[0025] Figure 5 The exploded view of the blade in the paper roll fixing structure;

[0026] Figure 6 for Figure 5 Side view of

[0027] Figure 7 It is a three-dimensional image of the third paper axis;

[0028] Figure 8 It is a combined diagram of the first paper axis and the second paper axis;

[0029] Figure 9 This is a structural diagram of the connection between the connecting arm and the mounting base;

[0030] Figure 10 The first connecting arm, the second connecting arm and the mounting base explode as follows;

[0031] Figure 11 This is a three-dimensional diagram of a paper near-end detection device;

[0032] Figure 12 Diagram of the paper end detection device and shrapnel explosion;

[0033] Wherein: 10, mounting seat; 11, first mounting portion; 12, second mounting portion; 20, connecting arm; 21, first connecting arm; 211, first mounting through hole; 212, second mounting through hole; 213, third mounting through hole; 22, second connecting arm; 221, fourth mounting through hole; 222, mounting notch; 223, shaft core limiting hole; 30, paper shaft; 31, first sleeve; 311, first hook; 312, second hook fixing portion; 32, second Sleeve; 321, second inverted hook; 322, protrusion; 33, shaft core; 331, first limiting groove; 332, second limiting groove; 333, limiting platform; 40, paper end detection device; 41, fixing block; 42, slide groove; 43, sensor; 44, paper shaft mounting hole; 45, spring piece; 50, paper roll fixing structure; 51, paper stopper; 511, card slot; 512, card connection column; 52, third inverted hook; 53, paper stopper blade; 531, card connection notch. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments. However, the following embodiments are only preferred embodiments of the present invention, not all of them. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without making any creative work are all within the scope of protection of the present invention. The experimental methods in the following embodiments are all conventional methods unless otherwise specified. The materials, reagents, etc. used in the following embodiments are all commercially available unless otherwise specified.

[0035] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model in specific circumstances.

[0037] The utility model provides a novel paper roll holder structure and a printer, wherein the novel paper roll holder structure comprises a mounting base 10, a connecting arm 20, a paper shaft 30 and a paper roll fixing structure 50;

[0038] The mounting base 10 is provided with at least two mounting portions for mounting the connecting arm 20; the two mounting portions are provided at different positions;

[0039] The paper shaft 30 includes a shaft core 33 and a sleeve; two or more sleeves of different lengths are detachably connected along the length direction; two or more sleeves of different lengths are sleeved on the shaft core 33;

[0040] One end of the shaft core 33 is detachably connected to a mounting portion via a connecting arm 20 , and the other end is detachably connected to the paper roll fixing structure 50 .

[0041] When implementing it specifically, Figure 1 、 Figure 2 、 Figure 3 As shown, the novel paper roll stand structure includes a mounting base 10, a connecting arm 20, a paper shaft 30 and a paper roll fixing structure 50;

[0042] The mounting base 10 is provided with at least two mounting portions; the mounting portions are used to mount the connecting arm 20; the two mounting portions are arranged at different positions; by providing the mounting portions at two different positions, paper can be loaded regardless of whether the user's device is mounted on the left side or on the side; otherwise, if the printer is mounted on the wrong side of the device, the paper roll cannot be loaded (the paper roll is loaded after the paper roll fixing structure 50 is removed), thereby achieving the installation of the paper roll holder at different positions;

[0043] The paper shaft 30 includes a shaft core 33 and a sleeve; two or more sleeves of different lengths are detachably connected along the length direction; the two or more sleeves of different lengths are sleeved onto the shaft core 33; one end of the shaft core 33 is detachably connected to a mounting portion via a connecting arm 20, and the other end is detachably connected to a paper roll fixing structure 50; the spacing between the paper roll fixing structure 50 and the connecting arm 20 is adjustable. During use, the user can combine the shaft core 33 with sleeves of different lengths. For example, the user can use only the shaft core 33, or sleeve a single sleeve of different lengths onto the shaft core 33, or sleeve two or more sleeves of different lengths onto the shaft core 33 according to actual needs, thereby accommodating printing papers of different shaft diameters and widths.

[0044] The novel paper roll holder structure provided by the utility model solves the problem that the existing printer paper roll holder supports and installs a single paper roll core model and a single installation position, and cannot adapt to the diverse usage needs of users.

[0045] When implementing it specifically, Figure 7 As shown, one end of the shaft core 33 is provided with a plurality of first limiting grooves 331 along the length direction, and the other end is provided with a plurality of second limiting grooves 332 along the length direction; the paper roll fixing structure 50 is clamped with a first limiting groove 331; the sleeve is clamped with a second limiting groove 332; through the provision of the plurality of first limiting grooves 331 and the clamping design with the paper roll fixing structure 50, the distance between the paper roll fixing structure 50 and the connecting arm 20 can be conveniently adjusted, thereby adapting to the installation of printing paper of different paper widths; through the provision of the plurality of second limiting grooves 332, for clamping the sleeve and the limiting sleeve, the printing paper is more stable during use.

[0046] like Figure 3 、 Figure 8 As shown, the sleeve includes a first sleeve 31 and a second sleeve 32; the length of the first sleeve 31 is greater than the length of the second sleeve 32;

[0047] One end of the first sleeve 31 is provided with a first hook 311 (such as Figure 8 As shown), the other end is provided with a second hook fixing portion 312 (as shown Figure 3 The second barb fixing portion 312 is a through hole provided on the side wall of the annular protrusion of the first sleeve 31. The hook portion of the second barb 321 passes through the through hole and is clamped on the annular protrusion. After installation, the two sleeves can be separated by pressing the second barb 321 toward the shaft core 33 and then pulling the second sleeve 32 to the side. The second sleeve 32 has a second barb 321 at one end. The hook portion of the first barb 311 is clamped in the second limiting groove 332. The position of the first sleeve 31 is limited by the second limiting groove 33.

[0048] During use, the user can, according to actual needs, sleeve the first sleeve 31 alone on the shaft core 33, or sleeve the first sleeve 31 and the second sleeve 32 together on the shaft core 33, so as to meet the installation requirements of printing rolls of different paper widths when the hollow diameter of the paper roll is large.

[0049] During specific implementation, the sleeve is composed of two or more sleeves.

[0050] When implementing it specifically, Figure 3 As shown, a protrusion 322 is provided on the end face of the second sleeve 32 close to the first sleeve 31; a groove is provided on the end face of the first sleeve 31; when the second sleeve 32 is connected to the first sleeve 31, the protrusion 322 is arranged in the groove; the radial connection strength between the sleeves can be enhanced by the protrusion 322 and the groove.

[0051] When implementing it specifically, Figure 1 、 Figure 2 As shown, the mounting portion of the mounting base 10 for mounting the connecting arm 20 includes a first mounting portion 11 and a second mounting portion 12, which are respectively provided on both sides of the mounting base 10. The first mounting portion 11 and the second mounting portion 12 include, but are not limited to, threaded holes, a clamping structure, and the like.

[0052] Furthermore, the connecting arm 20 includes a first connecting arm 21 and a second connecting arm 22 ; one end of the first connecting arm 21 is detachably connected to a mounting portion, and the other end is detachably connected to the shaft core 33 through the second connecting arm 22 .

[0053] When implementing it specifically, Figure 9 、 Figure 10 As shown, a first mounting through hole 211 is provided at one end of the first connecting arm 21; a third fastener passes through the first mounting through hole 211 and is detachably connected to the first mounting portion 11, and connects the first connecting arm 21 to the first mounting portion 11;

[0054] The other end of the first connecting arm 21 is provided with a second mounting hole 212 and a third mounting hole 213; a plurality of third mounting holes 213 are dispersed around the second mounting hole 212 with the second mounting hole 212 as the center (such as Figure 10 shown);

[0055] A fourth mounting through hole 221 and a mounting notch 222 are adjacent to one end of the second connecting arm 22; the distance between the mounting notch 222 and the fourth mounting through hole 221 is the same as the distance between the third mounting through hole 213 and the second mounting through hole 212; the fourth mounting through hole 221 and the second mounting through hole 212 are detachably connected by a first fastener; the mounting notch 222 and at least one third mounting through hole 213 are detachably connected by a second fastener; a shaft core limiting hole 223 is provided at the other end of the second connecting arm 22; a clamping protrusion that is adapted to the shape of the shaft core limiting hole 223 is provided on the side of the shaft core 33 close to the second limiting groove 332, and the shaft core is limited by combining the clamping protrusion with the shaft core limiting hole 223.

[0056] During installation, the angle between the first connecting arm 21 and the second connecting arm 22 can be adjusted by fastening the installation notch 222 with the three installation through holes 213 at different positions, thereby adjusting the position and height of the paper shaft 30 in the paper bin.

[0057] The aforementioned fastener structures include but are not limited to bolts, bolts and nuts.

[0058] Furthermore, the paper roll fixing structure 50 includes a paper stopper 51 and a plurality of paper stopper blades 53; the shaft core 33 passes through the paper stopper 51 and is detachably connected to the paper stopper 51; a plurality of paper stopper blades 53 are radiated from the side wall of the paper stopper 51 with the shaft core 33 as the center; the paper stopper blades 53 are detachably connected to the paper stopper 51.

[0059] When implementing it specifically, Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 As shown, the paper roll securing structure 50 includes a paper stopper 51 and a plurality of paper stopper blades 53. The shaft core 33 passes through the middle of the paper stopper 51. A third hook 52 is provided on one side of the middle of the paper stopper 51. When the shaft core 33 passes through the paper stopper 51, the third hook 52 is used to engage with one of the first limiting grooves 331 on the shaft core 33, thereby achieving a detachable connection between the paper roll securing structure 50 and the shaft core 33.

[0060] The circumferential side wall of the paper stopper 51 is provided with a plurality of card slots 511; a card notch 531 is provided at one end of the paper stopper blade 53; a card post 512 is provided in the card slot 511; the card notch 531 is carded in the card slot 511 by engaging with the card post 512, thereby realizing a detachable connection between the paper stopper blade 53 and the paper stopper 51; a plurality of paper stopper blades 53 are radiated on the side wall of the paper stopper 51 with the shaft core 33 as the center.

[0061] Furthermore, the paper shaft 30 is provided with a paper end detection device 40 .

[0062] Furthermore, the distance between the detection position of the paper near-end detection device 40 and the paper shaft 30 is adjustable.

[0063] When implementing it specifically, Figure 1 、 Figure 3 、 Figure 11 、 Figure 12 As shown, the paper shaft 30 is provided with a paper end detection device 40; the paper end detection device 40 includes a fixing block 41, a sensor 43, and a spring 45, wherein:

[0064] The fixing block 41 is provided with a paper shaft mounting hole 44 and a chute 42. A sensor 43 is located within the chute 42. The paper shaft mounting hole 44 matches the cross-sectional shape of the shaft core 33, which is provided with a stop platform 333. The mounting bracket for the sensor 43 is located within the chute 42, and a spring clip 45 is provided on the back of the chute 42. A bolt passes through the spring clip 45, connects the chute 42, and connects the mounting bracket for the sensor 43. The spring clip 45 secures the sensor within the chute 45. The chute 42 is elongated. The distance between the sensor 43 and the paper shaft 30 can be adjusted by sliding the sensor to different positions within the chute. The structure of the near-end paper detection device 40 in this embodiment facilitates adjustment of the position of the sensor 43 according to different paper roll types, making it easy to use. In this embodiment, the sensor 43 uses an existing paper end detection sensor, which will not be described in detail here.

[0065] The present invention also provides a printer that adopts any of the above-mentioned novel paper roll holder structures. The printer includes but is not limited to an embedded printer, a thermal printer, etc.

[0066] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new paper roll stand structure, characterized by: The invention comprises a mounting seat (10), a connecting arm (20), a paper shaft (30) and a paper roll fixing structure (50), wherein: The mounting seat (10) is provided with at least two mounting portions for mounting the connecting arm (20); the two mounting portions are arranged at different positions; The paper shaft (30) comprises a shaft core (33) and a sleeve; two or more sleeves of different lengths are detachably connected along the length direction; the two or more sleeves of different lengths are sleeved on the shaft core (33); One end of the shaft core (33) is detachably connected to a mounting portion via a connecting arm (20), and the other end is detachably connected to a paper roll fixing structure (50); the distance between the paper roll fixing structure (50) and the connecting arm (20) is adjustable.

2. The novel paper roll stand structure according to claim 1 is characterized in that: One end of the shaft core (33) is provided with a plurality of first limiting grooves (331) along the length direction, and the other end is provided with a plurality of second limiting grooves (332) along the length direction; the paper roll fixing structure (50) is clamped with a first limiting groove (331); and the sleeve is clamped with a second limiting groove (332).

3. The novel paper roll stand structure according to claim 2 is characterized in that: The sleeve comprises a first sleeve (31) and a second sleeve (32); the length of the first sleeve (31) is greater than the length of the second sleeve (32); One end of the first sleeve (31) is provided with a first barb (311), and the other end is provided with a second barb fixing portion (312); one end of the second sleeve (32) is provided with a second barb (321); The first inverted hook (311) can be snap-fitted into the second limiting groove (332); and the second inverted hook (321) can be snap-fitted into the second inverted hook fixing portion (312).

4. The novel paper roll stand structure according to claim 1 is characterized in that: The mounting portion of the mounting seat (10) for mounting the connecting arm (20) comprises a first mounting portion (11) and a second mounting portion (12); the first mounting portion (11) and the second mounting portion (12) are respectively arranged on both sides of the mounting seat (10).

5. The novel paper roll stand structure according to claim 1 is characterized in that: The connecting arm (20) comprises a first connecting arm (21) and a second connecting arm (22); one end of the first connecting arm (21) is detachably connected to a mounting portion, and the other end is detachably connected to the shaft core (33) via the second connecting arm (22).

6. The novel paper roll stand structure according to claim 5 is characterized in that: The first connecting arm (21) is provided with a second mounting through hole (212) and a third mounting through hole (213); a plurality of the third mounting through holes (213) are dispersedly arranged around the second mounting through hole (212) with the second mounting through hole (212) as the center; A fourth mounting through hole (221) and a mounting notch (222) are adjacently provided at one end of the second connecting arm (22); the distance between the mounting notch (222) and the fourth mounting through hole (221) is the same as the distance between the third mounting through hole (213) and the second mounting through hole (212); the fourth mounting through hole (221) and the second mounting through hole (212) are detachably connected via a first fastener; The mounting notch (222) and at least one third mounting through hole (213) are detachably connected via a second fastener.

7. The novel paper roll stand structure according to claim 1 is characterized in that: The paper roll fixing structure (50) comprises a paper stopper (51) and a plurality of paper stopper blades (53); the shaft core (33) passes through the paper stopper (51) and is detachably connected to the paper stopper (51); the plurality of paper stopper blades (53) are radiated from the side wall of the paper stopper (51) with the shaft core (33) as the center; and the paper stopper blades (53) are detachably connected to the paper stopper (51).

8. The novel paper roll stand structure according to any one of claims 1 to 7, characterized in that: The paper shaft (30) is provided with a paper end detection device (40).

9. The novel paper roll stand structure according to claim 8, characterized in that: The distance between the detection position of the paper end detection device (40) and the paper shaft (30) is adjustable.

10. A printer, characterized in that: A novel paper roll stand structure as described in any one of claims 1 to 9 is adopted.

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