Paper tearing knife mounting structure and printer

Abstract

The utility model discloses a paper tearing knife mounting structure and a printer, and relates to the technical field of label paper printers, the paper tearing knife mounting structure comprises a cover body, a compression roller support and a paper tearing knife, a clamping hook piece is arranged on the cover body, the clamping hook piece comprises a clamping hook arm and a clamping hook part which are connected with each other, and the clamping hook arm is connected with the cover body; a clamping hook part is arranged on a cover body, a clamping groove part matched with the clamping hook part is arranged on a compression roller support, when a paper tearing knife is installed, the paper tearing knife is firstly placed between the cover body and the compression roller support, the paper tearing knife and a clamping hook arm are matched in a limiting mode so that the paper tearing knife can be preliminarily positioned, and then the clamping hook part and the clamping groove part are connected in a clamping mode so that the compression roller support can be installed on the cover body. The cover body and the compression roller support can clamp the paper tearing knife, so that the paper tearing knife is fixed on the cover body, the installation of the paper tearing knife and the compression roller support can be realized only through the matched clamping connection of the clamping hook part and the clamping groove part, the structure is simple, and in addition, the paper tearing knife can be fixed more stably through the limiting matching of the clamping hook arm and the paper tearing knife.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of label printer, and particularly relates to a paper cutter mounting structure and a printer. BACKGROUND

[0002] In the related art, a paper cutter can cut label paper into a suitable size, so as to be applied to different products. When the paper cutter is installed, a die casting is used to position the paper cutter, and then the die casting is fixed by two screws. However, the installation method increases the dismounting complexity of the paper cutter, and the positioning of the paper cutter is not reliable. CONTENT OF THE UTILITY MODEL

[0003] The paper cutter mounting structure and the printer can solve the technical problem that the dismounting process of the paper cutter is complex and the positioning of the paper cutter is not reliable.

[0004] In a first aspect, an embodiment of the present application provides a paper cutter mounting structure, which comprises:

[0005] A cover body is provided with a hooking piece, the hooking piece comprises a hooking arm and a hooking part connected with each other, and the hooking arm is connected with the cover body.

[0006] A compression roller support is provided with a clamping groove part matched with the hooking part.

[0007] A paper cutter is arranged between the cover body and the compression roller support, and the paper cutter is limited and matched with the hooking arm.

[0008] The hooking part is clamped with the clamping groove part, so as to mount the compression roller support on the cover body and fix the paper cutter on the cover body.

[0009] In some embodiments, the paper cutter is provided with a limiting part on one side in the width direction of the cover body, and the hooking arm is in abutment with the limiting part.

[0010] In some embodiments, the hooking piece is provided as two, the two hooking pieces are arranged at intervals in the width direction of the cover body, the paper cutter is arranged at two opposite ends in the width direction of the cover body, and the two limiting parts are in abutment with the two hooking arms respectively, and at least part of the paper cutter is located between the two hooking pieces.

[0011] In some embodiments, one of the cover body and the paper cutter is provided with a mounting column, the other of the cover body and the paper cutter is provided with a mounting hole, and the mounting column is arranged in the mounting hole.

[0012] In some embodiments, the paper tearing cutter comprises a first plate body, a second plate body and a bending portion, the first plate body and the second plate body are arranged at an angle, and the second plate body is connected to the first plate body through the bending portion, the first plate body is located between the cover body and the roller support and abuts against the hook arm, and the cover body is provided with a placement position, and the second plate body abuts against the placement position.

[0013] In some embodiments, the distance between the roller support and the bending portion in a direction perpendicular to the first plate body is a, and a satisfies: 0 < a ≤ 1 mm.

[0014] In some embodiments, the paper tearing cutter further comprises a protruding mounting portion, the protruding mounting portion is connected to a side of the first plate body away from the second plate body, and a length of the protruding mounting portion in a width direction of the cover body is less than a length of the first plate body in the width direction of the cover body, so that opposite sides of the protruding mounting portion form openings with the first plate body, respectively.

[0015] In some embodiments, the hook members are provided in two, and the two openings are respectively connected to the two hook arms.

[0016] In some embodiments, the two hook members are arranged at intervals in the width direction of the cover body, the distance between the two hook members in the width direction of the cover body is b, the length of the protruding mounting portion in the width direction of the cover body is c, and b and c satisfy: b > c.

[0017] In some embodiments, the protruding mounting portion is located between the two hook members, and the protruding mounting portion has a first edge and a second edge arranged oppositely in the width direction of the cover body, and the first edge and the second edge are respectively arranged at intervals corresponding to the two hook members.

[0018] In some embodiments, the distance between the first edge and the corresponding hook member in the width direction of the cover body is d1, the distance between the second edge and the corresponding hook member in the width direction of the cover body is d2, and d1 and d2 satisfy: 0.1 mm ≤ d1 ≤ 3 mm, 0.1 mm ≤ d2 ≤ 3 mm.

[0019] In some embodiments, the cover body is provided with a first connecting hole, the roller support is provided with a through hole, and the paper tearing cutter mounting structure further comprises a connecting piece, the connecting piece is arranged through the first connecting hole and the through hole.

[0020] In some embodiments, the cover body is provided with a positioning column, the positioning column is provided with the first connecting hole, the axial direction of the positioning column and the axial direction of the first connecting hole are in the same direction, the roller support is provided with a positioning hole, the positioning hole is communicated with the through hole, and the positioning column is inserted into the positioning hole.

[0021] In some embodiments, the clamping groove is arranged on one side of the roller support along the length direction of the cover.

[0022] In some embodiments, the roller support has a first side and a second side arranged oppositely along the length direction of the cover, and the clamping groove is arranged close to the first side or the second side.

[0023] In some embodiments, two clamping hooks are arranged symmetrically along the width direction of the cover, and two clamping grooves are arranged correspondingly to the two clamping hooks.

[0024] In some embodiments, the roller support has a third side and a fourth side arranged oppositely along the width direction of the cover, and the paper cutter has a third edge and a fourth edge arranged oppositely along the width direction of the cover.

[0025] The third side is arranged oppositely and spaced apart from the third edge, and the distance between the third side and the third edge along the width direction of the cover is h1. The fourth side is arranged oppositely and spaced apart from the fourth edge, and the distance between the fourth side and the fourth edge along the width direction of the cover is h2. h1 and h2 satisfy: 0 < h1 ≤ 2 mm, and 0 < h2 ≤ 2 mm.

[0026] In a second aspect, the embodiments of the present application provide a printer, which comprises a host and the paper cutter mounting structure as described in any one of the above embodiments, and the cover is movably connected to the host.

[0027] The paper cutter mounting structure and the printer based on the embodiments of the present application have at least the following beneficial effects:

[0028] By arranging the clamping hook on the cover, the clamping hook comprises a clamping hook arm and a clamping hook part connected to each other, the clamping hook arm is connected to the cover, and the clamping groove matched with the clamping hook part is arranged on the roller support. When installing the paper cutter, the paper cutter can be first placed between the cover and the roller support, and the paper cutter is limited and matched with the clamping hook arm to preliminarily position the paper cutter. Then, the clamping hook part is clamped with the clamping groove, so that the roller support can be installed on the cover, and the cover and the roller support can clamp the paper cutter, thereby fixing the paper cutter on the cover. No other components are needed to separately install the paper cutter and the roller support. The clamping hook part and the clamping groove are matched and clamped, which can realize the installation of the paper cutter and the roller support. The structure is simple, and the disassembly and assembly of the paper cutter and the roller support are also simple. In addition, the clamping hook arm and the paper cutter are limited and matched, which can fix the paper cutter more stably. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0030] Figure 1 The first perspective view of the paper cutter mounting structure provided by the embodiment of the present application is shown in the structural schematic diagram.

[0031] Figure 2 The structural schematic diagram of the split of the pressure roller support and the cover body provided by the embodiment of the present application is shown in the structural schematic diagram.

[0032] Figure 3 The first kind of explosion structural schematic diagram of the paper cutter mounting structure provided by the embodiment of the present application is shown in the structural schematic diagram.

[0033] Figure 4 The structural schematic diagram of the paper cutter provided by the embodiment of the present application is shown in the structural schematic diagram.

[0034] Figure 5 The second kind of explosion structural schematic diagram of the paper cutter mounting structure provided by the embodiment of the present application is shown in the structural schematic diagram.

[0035] Figure 6 The first perspective view of the pressure roller support provided by the embodiment of the present application is shown in the structural schematic diagram.

[0036] Figure 7 The second perspective view of the pressure roller support provided by the embodiment of the present application is shown in the structural schematic diagram.

[0037] Figure 8 The second perspective view of the paper cutter mounting structure provided by the embodiment of the present application is shown in the structural schematic diagram.

[0038] Figure 9 The structural schematic diagram of a printer provided by the embodiment of the present application is shown in the structural schematic diagram.

[0039] BRIEF DESCRIPTION OF DRAWINGS

[0040] 100, printer; 10, cover; 1, hook piece; 11, hook arm; 12, hook part; 13, mounting column; 14, placing position; 15, positioning column; 151, first connecting hole; 20, pressure roller support; 201, first side edge; 202, second side edge; 203, third side edge; 204, fourth side edge; 21, clamping groove part; 22, through hole; 23, positioning hole; 30, paper cutter; 31, first plate body; 32, second plate body; 33, bending part; 34, protruding mounting part; 341, limiting part; 3411, opening; 342, mounting hole; 301, first edge; 302, second edge; 303, third edge; 304, fourth edge; 40, main machine. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0042] Please refer to Figure 1 and Figure 2 A paper cutter mounting structure provided by the present application, the paper cutter mounting structure comprises a cover 10, a pressure roller support 20 and a paper cutter 30, the cover 10 is provided with a hook piece 1, the hook piece 1 comprises a hook arm 11 and a hook part 12 connected with each other, the hook arm 11 is connected with the cover 10, the pressure roller support 20 is provided with a clamping groove part 21 matched with the hook part 12, the paper cutter 30 is arranged between the cover 10 and the pressure roller support 20, and the paper cutter 30 is limitedly matched with the hook arm 11, the hook part 12 and the clamping groove part 21 are clamped, the pressure roller support 20 can be mounted on the cover 10, and the paper cutter 30 is fixed on the cover 10.

[0043] Optionally, the printer 100 has a main machine 40 capable of defining a paper bin, the paper bin can be used for placing printing paper, the cover 10 can be rotatably connected with the main machine 40 for opening and closing the paper bin, one side of the cover 10 facing the paper bin is provided with the hook piece 1, the hook piece 1 comprises the hook arm 11 and the hook part 12 connected with each other, one end of the hook arm 11 is connected with the side of the cover 10 facing the paper bin, the other end of the hook arm 11 extends away from the cover 10 and is connected with the hook part 12, the pressure roller support 20 is located on the side of the cover 10 provided with the hook piece 1, and the pressure roller support 20 is provided with the clamping groove part 21, the inner contour shape and size of the clamping groove part 21 can be matched with the outer contour shape and size of the hook part 12, and the paper cutter 30 is arranged between the cover 10 and the pressure roller support 20, and the paper cutter 30 can be limitedly matched with the hook arm 11.

[0044] In the installation of the paper tearing knife 30, the paper tearing knife 30 can be first placed between the cover body 10 and the pressure roller support 20, and the paper tearing knife 30 is limited and matched with the clamping hook arm 11 to preliminarily position the paper tearing knife 30, and then the clamping hook part 12 is clamped with the clamping groove part 21, so that the pressure roller support 20 can be installed on the cover body 10, and the cover body 10 and the pressure roller support 20 can clamp the paper tearing knife 30, so as to fix the paper tearing knife 30 on the cover body 10, without the need to separately set other components to install the paper tearing knife 30 and the pressure roller support 20, and only by clamping and matching the clamping hook part 12 with the clamping groove part 21, the installation of the paper tearing knife 30 and the pressure roller support 20 can be realized, which is simple in structure, and the paper tearing knife 30 and the pressure roller support 20 are also simple to disassemble and assemble, and in addition, the clamping hook arm 11 is limited and matched with the paper tearing knife 30, so that the paper tearing knife 30 can be fixed more stably.

[0045] Please refer to Figure 2 and Figure 3 In some embodiments, the paper tearing knife 30 is provided with a limiting part 341 at one side in the width direction of the cover body 10, and the clamping hook arm 11 abuts against the limiting part 341.

[0046] Optionally, the paper tearing knife 30 can extend along the width direction of the cover body 10, Figure 1 the X-axis direction in the above is the width direction of the cover body 10, and the paper tearing knife 30 is provided with a limiting part 341 at one side in the width direction of the cover body 10, and the limiting part 341 can be an opening 3411, the clamping hook arm 11 can be arranged in the opening 3411, and the wall surface limiting the opening 3411 can abut against the clamping hook arm 11, so that the paper tearing knife 30 can be limited and matched with the clamping hook arm 11 to position the paper tearing knife 30, and when the paper tearing knife 30 is installed, the limiting part 341 can be limited and matched with the clamping hook arm 11 only by placing the paper tearing knife 30 on the clamping hook arm 11, which is very convenient to install.

[0047] Please refer to Figure 2 and Figure 3 In some embodiments, two clamping hook parts 1 are provided, and the two clamping hook parts 1 are arranged at intervals in the width direction of the cover body 10, the paper tearing knife 30 is arranged at two opposite ends in the width direction of the cover body 10, and the paper tearing knife 30 is provided with two limiting parts 341 at the two opposite ends, respectively, and the two limiting parts 341 abut against the two clamping hook arms 11, respectively, and at least part of the paper tearing knife 30 is located between the two clamping hook parts 1.

[0048] In the embodiment, the cover 10 is provided with two hook members 1 on the side facing the paper bin, the two hook members 1 are arranged at intervals along the width direction of the cover 10, the paper tearing knife 30 has a first end and a second end arranged along the width direction of the cover 10, the first end and the second end of the paper tearing knife 30 are both provided with a limiting part 341, the limiting part 341 is also an opening 3411, when the paper tearing knife 30 is installed, the paper tearing knife 30 can be placed on the two hook arms 11, and the two hook arms 11 are respectively arranged in the two openings 3411, so that the two hook arms 11 can limit the first end and the second end of the paper tearing knife 30 respectively, thereby positioning the paper tearing knife 30 on the cover 10, which can further increase the stability of the paper tearing knife 30.

[0049] In addition, at least part of the paper tearing knife 30 is located between the two hook members 1, more specifically, at least part of the paper tearing knife 30 is located between the two hook arms 11, so that the two hook arms 11 can limit the movement of the paper tearing knife 30 along the width direction of the cover 10, which can further limit the paper tearing knife 30, can make the paper tearing knife 30 more stable, and can also make full use of the space between the two hook arms 11 to install the paper tearing knife 30, reduce the additional space required for installing the paper tearing knife 30, and increase the space utilization.

[0050] Please refer to Figure 2 In some embodiments, one of the cover 10 and the paper tearing knife 30 is provided with a mounting column 13, and the other of the cover 10 and the paper tearing knife 30 is provided with a mounting hole 342, and the mounting column 13 is arranged in the mounting hole 342.

[0051] In the embodiment, the side of the cover 10 provided with the hook member 1 has a plurality of mounting columns 13, the paper tearing knife 30 is provided with a plurality of mounting holes 342, and the plurality of mounting columns 13 and the plurality of mounting holes 342 are arranged one by one, so that the plurality of mounting columns 13 can be respectively arranged in the plurality of mounting holes 342, thereby limiting the movement of the paper tearing knife 30 relative to the cover 10 along the axis perpendicular to the mounting hole 342, and the plug-in cooperation of the mounting column 13 and the mounting hole 342 can further increase the stability of the paper tearing knife 30.

[0052] In other embodiments, the cover 10 provided with the hook member 1 on the side thereof can also have a plurality of mounting holes 342, the paper tearing knife 30 can be provided with a plurality of mounting columns 13, or the cover 10 provided with the hook member 1 on the side thereof can have a plurality of mounting holes 342 and a plurality of mounting columns 13, and the paper tearing knife 30 can be provided with a plurality of mounting columns 13 and a plurality of mounting holes 342, as long as each mounting column 13 can be plug-in cooperated with the corresponding mounting hole 342.

[0053] Please refer to Figure 2 to Figure 4In some embodiments, the paper cutter 30 comprises a first plate body 31, a second plate body 32, and a bending part 33. The first plate body 31 is arranged at an angle with the second plate body 32, and the second plate body 32 is connected with the first plate body 31 through the bending part 33. The first plate body 31 is located between the cover body 10 and the roller support 20 and abuts against the hook arm 11. The cover body 10 is provided with a placement position 14, and the second plate body 32 abuts against the placement position 14.

[0054] Optionally, the first plate body 31 and the second plate body 32 are both long plate structures, and the bending part 33 is a bent plate structure. The plane in which the side surface of the first plate body 31 is located is arranged at an angle with the plane in which the side surface of the second plate body 32 is located, and the first plate body 31 is connected with the second plate body 32 through the bending part 33, so that the paper cutter 30 as a whole has a plate structure similar to an L shape. The first plate body 31 is located between the cover body 10 and the roller support 20, and can abut against the hook arm 11 to form a limiting cooperation, so that the hook arm 11 can support the paper cutter 30 and preliminarily position the paper cutter 30. The cover body 10 can have a placement position 14 on the side edge, which can be a structure similar to a groove. The second plate body 32 can abut against the placement position 14, so that the cover body 10 can support the paper cutter 30 and further position the paper cutter 30, thereby enabling the paper cutter 30 to be more accurately installed on the cover body 10.

[0055] Please refer to Figure 1 and Figure 4 In some embodiments, the distance between the roller support 20 and the bending part 33 in a direction perpendicular to the first plate body 31 is a, and a satisfies: 0 < a ≤ 1 mm.

[0056] It should be noted that Figure 1 the Z-axis direction in the above formula is the direction perpendicular to the first plate body 31. The paper cutter 30 has a paper cutting end for cutting the printing paper. The paper cutting end needs to be exposed from the surface of the cover body 10 to facilitate the paper cutter 30 to cut the printing paper. In the present embodiment, the first plate body 31 is located between the roller support 20 and the cover body 10, the second plate body 32 is located outside the roller support 20, and the end of the second plate body 32 away from the first plate body 31 is the paper cutting end. The paper cutting end can be exposed from the placement position 14 of the cover body 10. The bending part 33 is a transition part of the paper cutter 30 extending between the roller support 20 and the cover body 10. The distance between the edge of the roller support 20 and the bending part 33 in the direction perpendicular to the first plate body 31 is a. If the distance a is too large, the gap between the roller support 20 and the bending part 33 will be too large, which will cause the structure of the paper cutter 30 clamped between the roller support 20 and the cover body 10 to be unstable, and the paper cutter 30 will be loose. When a satisfies: 0 < a ≤ 1 mm, the bending part 33 can extend between the roller support 20 and the cover body 10, and the paper cutter 30 can be stably installed between the roller support 20 and the cover body 10.

[0057] Referring to Figure 2 to Figure 4 In some embodiments, the paper cutter 30 further comprises a protruding mounting portion 34 connected to the side of the first plate body 31 away from the second plate body 32, and the length of the protruding mounting portion 34 along the width direction of the cover body 10 is less than the length of the first plate body 31 along the width direction of the cover body 10, so that the protruding mounting portion 34 forms two openings 3411 along the opposite sides of the width direction of the cover body 10 with the first plate body 31, and the two openings 3411 are respectively clamped with the two clamping arms 11.

[0058] In the embodiment, the protruding mounting portion 34 is a long plate structure extending along the width direction of the cover body 10, the protruding mounting portion 34 is connected to the side of the first plate body 31 away from the second plate body 32, and the protruding mounting portion 34 is located in the middle region of the first plate body 31, the length of the protruding mounting portion 34 along the width direction of the cover body 10 is less than the length of the first plate body 31 along the width direction of the cover body 10, the opposite sides of the protruding mounting portion 34 along the width direction of the cover body 10 are respectively a first side and a second side, the opposite sides of the first plate body 31 along the width direction of the cover body 10 are respectively a third side and a fourth side, the first side and the third side are arranged at an angle and connected to form an opening 3411, and the second side and the fourth side are arranged at an angle and connected to form another opening 3411, the two openings 3411 are respectively located on the opposite sides of the paper cutter 30 along the width direction of the cover body 10, and when the paper cutter 30 is installed, the paper cutter 30 can be positioned by being placed on the two clamping pieces 1, and the two openings 3411 can be respectively clamped with the two clamping arms 11.

[0059] Referring to Figure 2 and Figure 4 In some embodiments, the two clamping pieces 1 are arranged at intervals along the width direction of the cover body 10, the distance between the two clamping pieces 1 along the width direction of the cover body 10 is b, the length of the protruding mounting portion 34 along the width direction of the cover body 10 is c, and b and c satisfy: b>c.

[0060] Alternatively, the two clamping arms 11 are arranged at intervals along the width direction of the cover body 10, and when the paper cutter 30 is installed, the protruding mounting portion 34 can be directly placed between the two clamping arms 11 due to b>c, and the two openings 3411 on the paper cutter 30 can also be respectively clamped with the two clamping arms 11, so that the paper cutter 30 can be conveniently positioned, and the two clamping arms 11 can also limit the movement of the protruding mounting portion 34 along the width direction of the cover body 10, so that the paper cutter 30 can be installed more firmly.

[0061] Referring to Figure 2 and Figure 4In some embodiments, the protruding mounting portion 34 is located between the two clamping pieces 1, and the protruding mounting portion 34 has a first edge 301 and a second edge 302 oppositely arranged along the width direction of the cover body 10, the first edge 301 and the second edge 302 are respectively arranged at intervals corresponding to the two clamping pieces 1, the distance between the first edge 301 and the corresponding clamping piece 1 along the width direction of the cover body 10 is d1, and the distance between the second edge 302 and the corresponding clamping piece 1 along the width direction of the cover body 10 is d2, and d1 and d2 satisfy: 0.1mm≤d1≤3mm and 0.1mm≤d2≤3mm.

[0062] Optionally, the protruding mounting portion 34 is arranged between the two clamping arms 11, and the first edge 301 and the second edge 302 oppositely arranged along the width direction of the cover body 10 are respectively arranged at intervals corresponding to the two clamping arms 11, so that when the paper cutter 30 is mounted, the protruding mounting portion 34 can not be in contact with the side surfaces of the two clamping arms 11, the protruding mounting portion 34 can be conveniently arranged between the two clamping arms 11, and the difficulty of mounting the paper cutter 30 is reduced.

[0063] The distance between the first edge 301 and the corresponding clamping arm 11 along the width direction of the cover body 10 is d1, and the distance between the second edge 302 and the corresponding clamping arm 11 along the width direction of the cover body 10 is d2, d1 and d2 cannot be too large or too small, if d1 and d2 are both less than 0.1mm, the length of the protruding mounting portion 34 along the width direction of the cover body 10 is close to the distance between the two clamping arms 11 along the width direction of the cover body 10, which makes it difficult to place the protruding mounting portion 34 between the two clamping arms 11, thereby making it difficult to mount the paper cutter 30, and if d1 and d2 are both greater than 3mm, the protruding mounting portion 34 is prone to loosen after being mounted between the two clamping arms 11, which can cause the paper cutter 30 to be not firmly mounted, therefore, when d1 and d2 satisfy: 0.1mm≤d1≤3mm and 0.1mm≤d2≤3mm, the protruding mounting portion 34 can be conveniently arranged between the two clamping arms 11, and the paper cutter 30 can be firmly mounted.

[0064] Of course, it should be noted that in the embodiments of the present application, d1 and d2 are not necessarily equal, d1 only needs to satisfy: 0.1mm≤d1≤3mm, and d2 only needs to satisfy: 0.1mm≤d2≤3mm.

[0065] Please refer to Figure 5 In some embodiments, the cover body 10 is provided with a first connecting hole 151, the pressure roller support 20 is provided with a through hole 22, and the paper cutter mounting structure further comprises a connecting piece, which is arranged in the first connecting hole 151 and the through hole 22.

[0066] Optionally, the axial direction of the first connecting hole 151 can be the same as the axial direction of the mounting hole 342, and the axial center line of the first connecting hole 151 can be collinear with the axial center line of the through hole 22. The connecting member can be a bolt, which is arranged in the first connecting hole 151 and the through hole 22, and can be used to fix the compression roller support 20 to the cover 10, so that the compression roller support 20 and the cover 10 are fixed more firmly. When the compression roller support 20 needs to be disassembled, the connecting member only needs to be pulled out of the first connecting hole 151 and the through hole 22, so that the compression roller support 20 can be conveniently disassembled and assembled.

[0067] Please refer to Figure 5 to Figure 7 In some embodiments, the cover 10 is provided with a positioning column 15, the positioning column 15 is provided with a first connecting hole 151, the axial direction of the positioning column 15 is the same as the axial direction of the first connecting hole 151, the compression roller support 20 is provided with a positioning hole 23, the positioning hole 23 is communicated with the through hole 22, and the positioning column 15 is inserted into the positioning hole 23.

[0068] Optionally, the cover 10 can protrude in the direction of the compression roller support 20 and is provided with a positioning column 15, the end surface of the positioning column 15 facing the compression roller support 20 is provided with a first connecting hole 151, so that the axial direction of the first connecting hole 151 is the same as the axial direction of the positioning column 15, the side surface of the compression roller support 20 facing the cover 10 is provided with a positioning hole 23, the positioning hole 23 is communicated with the through hole 22, and the axial center line of the positioning hole 23 is collinear with the axial center line of the through hole 22.

[0069] When the compression roller support 20 is installed, the positioning column 15 can be inserted into the positioning hole 23 first, so that the compression roller support 20 can be preliminarily positioned with the cover 10, and the first connecting hole 151 and the through hole 22 can be communicated, so that the connecting member can be conveniently inserted into the first connecting hole 151 and the through hole 22, and the compression roller support 20 can be easily installed on the cover 10.

[0070] Please refer to Figure 7 In some embodiments, along the length direction of the cover 10, the clamping groove part 21 and the through hole 22 are respectively arranged on opposite sides of the compression roller support 20.

[0071] In this embodiment, along the length direction of the cover 10, Figure 1The Y-axis direction in the cover 10 is the length direction, the pressure roller support 20 can have a first side edge 201 and a second side edge 202 arranged oppositely, the clamping groove part 21 can be arranged close to the first side edge 201, so that the first connecting point formed by the clamping hook part 12 and the clamping groove part 21 can be close to the first side edge 201, the through hole 22 can be arranged close to the second side edge 202, so that the second connecting point formed by the connecting piece and the first connecting hole 151 and the through hole 22 can be close to the second side edge 202, so that the first connecting point and the second connecting point can fix the opposite sides of the pressure roller support 20, and then the pressure roller support 20 and the cover 10 are fixed more firmly.

[0072] In other embodiments, the clamping groove part 21 can be arranged close to the second side edge 202, and the through hole 22 can be arranged close to the first side edge 201, as long as the clamping groove part 21 and the through hole 22 are respectively arranged on the opposite sides of the pressure roller support 20.

[0073] In some embodiments, when the clamping groove part 21 is arranged close to the first side edge 201, the first connecting point formed by the clamping groove part 21 and the clamping hook part 12 can be located at the edge of the pressure roller support 20, and when the pressure roller support 20 is disassembled, the clamping hook part 12 can be disengaged from the clamping groove part 21 from the edge of the pressure roller support 20, which can facilitate the disassembly of the pressure roller support 20. Similarly, arranging the clamping groove part 21 close to the second side edge 202 can also make the first connecting point located at the edge of the pressure roller support 20, and the pressure roller support 20 can also be disassembled conveniently.

[0074] Please refer to Figure 3 In some embodiments, the clamping hook part 1 is arranged in two, and the two clamping hook parts 1 are arranged symmetrically along the width direction of the cover 10, the clamping groove part 21 is arranged in two, and the two clamping hook parts 12 are respectively arranged corresponding to the two clamping groove parts 21.

[0075] Alternatively, the two clamping hook parts 1 are arranged symmetrically along the width direction of the cover 10, so that the two clamping hook parts 12 can also be arranged symmetrically along the width direction of the cover 10, when the two clamping hook parts 12 are arranged corresponding to the two clamping groove parts 21, the two first connecting points formed on the pressure roller support 20 can also be arranged symmetrically along the width direction of the cover 10, which can make the pressure roller support 20 and the cover 10 more firmly connected, and when the pressure roller support 20 is disassembled, after one of the two clamping hook parts 12 is disassembled, the clamping hook part 12 can be abutted with the pressure roller support 20, so that the other clamping hook part 12 can be disassembled conveniently, which can simplify the difficulty of disassembling the pressure roller support 20.

[0076] Please refer to Figure 8In some embodiments, the pressure roller support 20 has a third side edge 203 and a fourth side edge 204 on opposite sides of the cover body 10 in the width direction of the cover body 10, and the paper cutter 30 has a third edge 303 and a fourth edge 304 on opposite sides of the cover body 10 in the width direction of the cover body 10, the third side edge 203 is opposite and spaced apart from the third edge 303, the spacing between the third side edge 203 and the third edge 303 in the width direction of the cover body 10 is h1, the fourth side edge 204 is opposite and spaced apart from the fourth edge 304, the spacing between the fourth side edge 204 and the fourth edge 304 in the width direction of the cover body 10 is h2, and h1 and h2 satisfy: 0 < h1 ≤ 2 mm, 0 < h2 ≤ 2 mm.

[0077] It can be understood that the pressure roller support 20 covers the paper cutter 30, and the pressure roller support 20 and the cover body 10 jointly clamp the paper cutter 30 to fix the paper cutter 30. In order to fix the paper cutter 30 more stably, the pressure roller support 20 is usually abutted against the middle part of the paper cutter 30. Since the size of the paper cutter 30 in the width direction of the cover body 10 is slightly larger than the size of the pressure roller support 20 in the width direction of the cover body 10, there is a gap between the third side edge 203 of the pressure roller support 20 and the third edge 303 of the paper cutter 30, and the spacing between the third side edge 203 and the third edge 303 in the width direction of the cover body 10 is h1. There is also a gap between the fourth side edge 204 of the pressure roller support 20 and the fourth edge 304 of the paper cutter 30, and the spacing between the fourth side edge 204 and the fourth edge 304 in the width direction of the cover body 10 is h2.

[0078] If h1 and h2 are both greater than 2 mm, it means that the size of the pressure roller support 20 in the width direction of the cover body 10 is much smaller than the size of the paper cutter 30 in the width direction of the cover body 10, and part of the end portion on opposite sides of the paper cutter 30 in the width direction of the cover body 10 is not abutted by the pressure roller support 20, which can cause the paper cutter 30 to be not firmly positioned. Therefore, when h1 and h2 satisfy: 0 < h1 ≤ 2 mm, 0 < h2 ≤ 2 mm, the pressure roller support 20 can fix the paper cutter 30 more stably. Of course, h1 and h2 do not need to be equal, as long as h1 and h2 are both less than or equal to 2 mm.

[0079] Please refer to Figure 9 The application also provides a printer 100, which comprises a host 40 and the paper cutter mounting structure as described above, and the cover body 10 is rotationally connected to the host 40 and is used to open and close the host 40.

[0080] The printer 100 has the same beneficial effects as the paper cutter mounting structure, and thus will not be described again.

[0081] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it is understood that if the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationships in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present patent, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0082] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A paper-tearing-knife mounting structure characterized by comprising: The utility model relates to a cover body, the cover body is equipped with the hook piece, the hook piece includes the hook arm and the hook part of interconnection, the hook arm is connected with the cover body; The roller support is equipped with the card slot part matched with the hook part; The paper cutter is arranged between the cover body and the roller support, and the paper cutter is limitedly matched with the hook arm; The hook part and the card slot part are clamped to install the roller support on the cover body, and the paper cutter is fixed on the cover body. The paper cutter is equipped with the limiting portion along one side of the cover body width direction, and the hook arm is abutted with the limiting portion.

2. The paper-ripper mounting structure according to claim 1, characterized in that The hook piece is arranged as two, and the two hook pieces are arranged at intervals along the width direction of the cover body.

3. The paper-ripper mounting structure according to claim 2, characterized in that The cover body and the paper cutter are equipped with the mounting column and the mounting hole respectively, and the mounting column is arranged in the mounting hole.

4. The paper-ripper mounting structure according to claim 1, characterized by The paper cutter includes a first plate body, a second plate body, and a bending portion.

5. The paper-ripper mounting structure according to claim 1, characterized in that The distance between the roller support and the bending portion is a, and a satisfies 0 < a < 1 mm.

6. The paper-ripper mounting structure according to claim 5, characterized in that The paper cutter further includes a protruding mounting portion connected to the side of the first plate body away from the second plate body.

7. The paper-ripper mounting structure according to claim 5, characterized in that The length of the protruding mounting portion along the width direction of the cover body is less than the length of the first plate body along the width direction of the cover body. The two hook pieces are arranged at intervals along the width direction of the cover body.

8. The paper-ripper mounting structure according to claim 7, characterized in that The distance between the two hook pieces along the width direction of the cover body is b, the length of the protruding mounting portion along the width direction of the cover body is c, and b and c satisfy b > c.

9. The paper-ripper mounting structure according to claim 7, characterized in that The protruding mounting portion is located between the two hook pieces, and the protruding mounting portion has a first edge and a second edge arranged oppositely along the width direction of the cover body. The distance between the first edge and the corresponding hook piece along the width direction of the cover body is d1, and the distance between the second edge and the corresponding hook piece along the width direction of the cover body is d2. d1 and d2 satisfy 0.1 mm < d1 < 3 mm and 0.1 mm < d2 < 3 mm.

10. The paper-ripper mounting structure according to claim 1, characterized in that, The cover is provided with a first connecting hole, and the pressing roller support is provided with a through hole. The paper tearing knife mounting structure further comprises a connecting piece, which is arranged in the first connecting hole and the through hole.

11. The paper-ripper mounting structure according to claim 10, characterized in that The cover is provided with a positioning column, and the positioning column is provided with the first connecting hole. The axial direction of the positioning column is the same as the axial direction of the first connecting hole. The pressing roller support is provided with a positioning hole, and the positioning hole is communicated with the through hole. The positioning column is inserted into the positioning hole.

12. The paper-ripper mounting structure according to claim 10, characterized in that Along the length direction of the cover, the clamping groove part and the through hole are respectively arranged on opposite sides of the pressing roller support.

13. The paper-ripper mounting structure according to claim 1, characterized in that The pressing roller support has a first side edge and a second side edge arranged oppositely along the length direction of the cover. The clamping groove part is arranged close to the first side edge, or the clamping groove part is arranged close to the second side edge.

14. The paper-ripper mounting structure according to claim 1, characterized by The clamping hook part is provided with two clamping hook parts, and the two clamping hook parts are symmetrically arranged along the width direction of the cover. The clamping groove part is provided with two clamping groove parts, and the two clamping hook parts are respectively correspondingly clamped with the two clamping groove parts.

15. The paper-ripper mounting structure according to claim 1, characterized by The pressing roller support has a third side edge and a fourth side edge arranged oppositely along the width direction of the cover. The paper tearing knife has a third edge and a fourth edge arranged oppositely along the width direction of the cover. The third side edge is arranged oppositely and spaced apart from the third edge, and the spacing between the third side edge and the third edge along the width direction of the cover is h1. The fourth side edge is arranged oppositely and spaced apart from the fourth edge, and the spacing between the fourth side edge and the fourth edge along the width direction of the cover is h2. h1 and h2 satisfy: 0 < h1 ≤ 2 mm, 0 < h2 ≤ 2 mm.

16. A printer characterized by comprising: The paper tearing knife mounting structure comprises a cover and a pressing roller support. The cover is provided with a first connecting hole, and the pressing roller support is provided with a through hole. The paper tearing knife mounting structure further comprises a connecting piece, which is arranged in the first connecting hole and the through hole.

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