Printer

Abstract

The utility model discloses a printer, and relates to the technical field of printer equipment, the printer comprises a printer body and a cover body, the cover body is movably connected with the printer body, so that the cover body has a closed state and an open state, and two first limiting parts are arranged on the printer body; the press roll mounting frame is provided with two first limiting parts, the two first limiting parts are arranged at intervals in the first direction and are in one-to-one correspondence with the two clamping hook pieces, the press roll mounting frame is provided with two second limiting parts, the two second limiting parts are located on the two outer side walls, opposite to each other in the first direction, of the press roll mounting frame correspondingly, and when the cover body covers the machine body, the second limiting parts firstly make contact with the first limiting parts; the two second limiting parts are located between the two first limiting parts, and under the limiting matching action of the two first limiting parts and the two second limiting parts, the pressing roller mounting frame can be prevented from deviating relative to the machine body in the first direction, so that the two ends of the pressing roller can directly face and be clamped with the two clamping hook pieces correspondingly; and the cover body and the machine body are more stably covered.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of printer equipment, and in particular to a printer. BACKGROUND

[0002] In the related art, a printer includes a body and a cover. The body is provided with two clamping pieces at intervals. The cover is provided with a pressure roller. The pressure roller is rotationally connected to the cover. When the cover is closed, the two ends of the pressure roller are respectively clamped with the two clamping pieces.

[0003] However, due to the inconsistent order, size, and direction of forces on both sides of the cover, the pressure roller and the two clamping pieces are likely to be clamped out of sync, that is, one end of the pressure roller is clamped into one clamping piece, and the other end is not clamped into the other clamping piece. CONTENT OF THE UTILITY MODEL

[0004] The embodiments of the present application provide a printer, which can solve the technical problem of clamping out of sync of the pressure roller and the two clamping pieces when the cover is closed.

[0005] In a first aspect, the embodiments of the present application provide a printer, which includes:

[0006] a body having two first limiting portions and two clamping pieces, the two first limiting portions being provided at intervals along a first direction, and the two first limiting portions being respectively provided in one-to-one correspondence with the two clamping pieces;

[0007] a cover movably connected to the body, so that the cover has a closed state and an open state, the cover having a pressure roller mounting rack and a pressure roller assembled on the pressure roller mounting rack, the pressure roller mounting rack having two second limiting portions, the two second limiting portions being respectively located on two outer side walls of the pressure roller mounting rack opposite in the first direction;

[0008] When the cover is in the closed state, the two second limiting portions are located between the two first limiting portions, and the two second limiting portions are respectively limited in cooperation with the two first limiting portions, so that the two ends of the pressure roller are respectively clamped with the two clamping pieces.

[0009] In some embodiments, when the cover is in the closed state, the distance between the first limiting portion and the second limiting portion matched therebetween is d, and d satisfies: 0.5mm≥d≥0.05mm.

[0010] In some embodiments, the second limiting portion includes a limiting groove, and the first limiting portion includes a limiting protrusion, the limiting protrusion being used for limiting cooperation with the limiting groove when the cover is in the closed state.

[0011] In some embodiments, the limiting groove comprises a groove bottom surface, which is configured to abut against the limiting protrusion.

[0012] In some embodiments, the limiting groove comprises a groove bottom surface and a groove top surface, wherein the width of the groove top surface is smaller than that of the groove bottom surface, and the groove top surface is configured to abut against the limiting protrusion.

[0013] In some embodiments, the width of the groove top surface is h, and h satisfies 2.5mm≥h≥1mm.

[0014] In some embodiments, the pressing roller mounting frame is provided with a guide slope on the two outer side walls opposite to each other along the first direction, and the guide slope is connected with the groove top surface to guide the limiting protrusion to abut against the groove top surface.

[0015] In some embodiments, the cover comprises an outer cover and an inner cover connected with the outer cover.

[0016] In some embodiments, the pressing roller mounting frame is arranged on the side of the inner cover away from the outer cover.

[0017] In some embodiments, at least one of the inner cover and the outer cover is provided with a first positioning protrusion, and at least the other of the inner cover and the outer cover is provided with a first positioning groove, and the first positioning protrusion and the first positioning groove are insertedly connected.

[0018] In some embodiments, the pressing roller mounting frame comprises a fixing seat and a rotating mounting frame connected with the fixing seat, the fixing seat is arranged on the outer cover, the inner cover is provided with a through hole, the rotating mounting frame is arranged in the through hole, and the pressing roller is rotatably mounted on the rotating mounting frame and located on the side of the inner cover away from the outer cover.

[0019] In some embodiments, at least one of the inner cover and the rotating mounting frame is provided with a second positioning protrusion, and at least the other of the inner cover and the rotating mounting frame is provided with a second positioning groove, and the second positioning protrusion and the second positioning groove are insertedly connected.

[0020] In some embodiments, the pressing roller comprises a roller body and a rotating shaft, the roller body is sleeved on the rotating shaft, the rotating shaft is rotatably mounted on the pressing roller mounting frame, and when the cover is in the closed state, the two ends of the rotating shaft are respectively clamped by the two clamping hooks.

[0021] In some embodiments, the cover has oppositely arranged connecting end and movable end, the connecting end is rotationally connected with the body, the movable end is provided with the roller mounting rack, and the hooking member is located on the side of the first limiting part away from the connecting end.

[0022] In some embodiments, the first limiting part comprises a guide protrusion located on the side of the first limiting part facing the hooking member, and the guide protrusion is used to guide the one end of the roller to be clamped with the hooking member.

[0023] The printer provided by the embodiments of the present application has at least the following beneficial effects:

[0024] By arranging two first limiting parts on the body, the two first limiting parts are arranged in the first direction and correspond to the two hooking members one by one, and the roller mounting rack has two second limiting parts, the two second limiting parts are respectively located on the two outer side walls of the roller mounting rack facing away from each other in the first direction, when the cover is closed with the body, the second limiting part will first contact with the first limiting part, and the two second limiting parts are located between the two first limiting parts, under the limiting cooperation of the two first limiting parts and the two second limiting parts respectively, the roller mounting rack can be prevented from being offset relative to the body in the first direction, so that the two ends of the roller can be respectively opposite to and clamped with the two hooking members, and the cover can be closed with the body more stably. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0026] Figure 1 The first perspective view of the structure of the printer provided by the embodiments of the present application in the open state;

[0027] Figure 2 The second perspective view of the structure of the printer provided by the embodiments of the present application in the open state;

[0028] Figure 3 The structure of the cover provided by the embodiments of the present application; Figure 2 The enlarged structure diagram of A in FIG. 6;

[0029] Figure 4 The structure of the cover provided by the embodiments of the present application;

[0030] Figure 5 The structure of the cover provided by the embodiments of the present application; Figure 2 The enlarged structure diagram of B in FIG. 6.

[0031] Explanation of reference signs:

[0032] 100, printer; 10, body; 11, first limiting part; 111, limiting protrusion; 112, guiding protrusion; 12, hooking piece; 20, cover; 201, connecting end; 202, movable end; 21, pressure roller mounting rack; 22, pressure roller; 221, roller body; 222, rotating shaft; 23, second limiting part; 231, limiting groove; 2311, groove bottom surface; 2312, groove top surface; 24, guiding inclined surface; 25, inner cover; 26, outer cover; 27, first positioning protrusion; 28, first positioning groove. DETAILED DESCRIPTION

[0033] 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.

[0034] Please refer to Figures 1 to 3 A printer 100 provided by the present application embodiment, the printer 100 includes a body 10 and a cover 20, the body 10 has two first limiting parts 11 and two hooking pieces 12, two first limiting parts 11 are spaced apart along the first direction, and two first limiting parts 11 are respectively arranged one by one with two hooking pieces 12, the cover 20 is movably connected with the body 10, so that the cover 20 can be switched between the closed state and the open state relative to the body 10, the cover 20 has a pressure roller mounting rack 21 and a pressure roller 22 assembled on the pressure roller mounting rack 21, the pressure roller mounting rack 21 has two second limiting parts 23, two second limiting parts 23 are respectively located on the two outer side walls of the pressure roller mounting rack 21 along the first direction, wherein, when the cover 20 is in the closed state, two second limiting parts 23 are located between two first limiting parts 11, and two second limiting parts 23 are respectively limited to cooperate with two first limiting parts 11, so that the two ends of the pressure roller 22 are respectively clamped with two hooking pieces 12.

[0035] Optionally, the body 10 is the main machine of the printer 100, the body 10 can be used to realize printing, the top surface of the body 10 is provided with two first limiting parts 11 and two hooking pieces 12, the first direction is the width direction of the body 10, two first limiting parts 11 are spaced apart along the first direction, and the first limiting part 11 protrudes upward relative to the top surface of the body 10, two hooking pieces 12 are arranged one by one with two first limiting parts 11, in the corresponding hooking piece 12 and the first limiting part 11, the opening on the hooking piece 12 is arranged towards the first limiting part 11.

[0036] The cover body 20 is movably connected with the machine body 10, so that the cover body 20 can move towards or away from the machine body 10. The cover body 20 can move relative to the machine body 10 to a closed state and an open state. More specifically, when the cover body 20 moves towards the machine body 10, the cover body 20 can be moved to be closed with the machine body 10, and at this time, the cover body 20 is in the closed state. When the cover body 20 moves away from the machine body 10, the cover body 20 can be moved to expose the top surface of the machine body 10, and at this time, the cover body 20 is in the open state.

[0037] The pressing roller mounting frame 21 can be arranged at the movable end 202 of the cover body 20. The movable end 202 of the cover body 20 is the end at which the cover body 20 can move relative to the machine body 10. The pressing roller 22 is rotatably mounted on the pressing roller mounting frame 21. The pressing roller mounting frame 21 is provided with a second limiting portion 23 on each of the two outer side walls opposite in the first direction. The axis direction of the pressing roller 22 is the same as the first direction, so that the two ends of the pressing roller 22 in the axis direction are respectively arranged in one-to-one correspondence with the two second limiting portions 23.

[0038] When the cover body 20 is closed with the machine body 10, the second limiting portion 23 will first contact the first limiting portion 11, and the two second limiting portions 23 are located between the two first limiting portions 11. Under the limiting cooperation of the two first limiting portions 11 and the two second limiting portions 23, the two first limiting portions 11 can limit the pressing roller mounting frame 21 between the two first limiting portions 11, so as to prevent the pressing roller mounting frame 21 from deviating relative to the machine body 10 in the first direction, thereby enabling the two ends of the pressing roller 22 to respectively face and be clamped by the two hook members 12, so that the cover body 20 is more stably closed with the machine body 10.

[0039] In some embodiments, when the cover body 20 is in the closed state, the distance between the first limiting portion 11 and the second limiting portion 23 that matches it is d, and d satisfies: 0.5mm≥d≥0.05mm.

[0040] It can be understood that, in the process of moving the cover body 20 to the closed state, the two first limiting portions 11 will be respectively limited and cooperated with the two second limiting portions 23, that is, the first limiting portion 11 will contact the second limiting portion 23 that matches it. If the distance between the first limiting portion 11 and the second limiting portion 23 that matches it is greater than 0.5mm when the cover body 20 is in the closed state, the distance between the first limiting portion 11 and the second limiting portion 23 is too large, which causes the first limiting portion 11 and the second limiting portion 23 that matches it to be not close enough, so that the pressing roller mounting frame 21 can shake in the first direction between the two first limiting portions 11.

[0041] If the distance between the first limiting portion 11 and the matched second limiting portion 23 is less than 0.05mm when the cover 20 is in the closed state, the distance between the first limiting portion 11 and the matched second limiting portion 23 is too small, which results in too large friction between the first limiting portion 11 and the matched second limiting portion 23, and it is inconvenient to open and close the cover 20. In addition, in the process of closing the cover 20, the second limiting portion 23 is prone to collide with the first limiting portion 11, and the cover 20 cannot be closed.

[0042] Therefore, the distance d between the first limiting portion 11 and the matched second limiting portion 23 satisfies: 0.5mm≥d≥0.05mm, and the two first limiting portions 11 can prevent the pressure roller mounting frame 21 from shaking in the first direction, and will not affect the opening and closing of the cover 20.

[0043] Please refer to Figure 1 and Figure 3 In some embodiments, the second limiting portion 23 comprises a limiting groove 231, and the first limiting portion 11 comprises a limiting protrusion 111, and the limiting protrusion 111 is used for limiting cooperation with the limiting groove 231 when the cover 20 is in the closed state.

[0044] It should be noted that the limiting groove 231 is recessed on the two outer side walls of the pressure roller mounting frame 21 in the first direction, and the limiting protrusion 111 is protruded on the oppositely arranged side walls of the two first limiting portions 11, and the two limiting protrusions 111 can correspond to the two limiting grooves 231 one by one, and in the process of closing the cover 20, the two limiting protrusions 111 can be matched with the two limiting grooves 231 respectively, thereby limiting the pressure roller mounting frame 21 between the two first limiting portions 11, so that the two ends of the pressure roller 22 are respectively clamped with the two hook members 12, and the cover 20 is more stably closed with the machine body 10.

[0045] In addition, the limiting groove 231 is recessed on the two outer side walls of the pressure roller mounting frame 21 in the first direction, which can reduce the length of the pressure roller mounting frame 21 in the first direction, and the length of the pressure roller mounting frame 21 is reduced, which can increase the rigidity of the pressure roller mounting frame 21 in the first direction, so that the pressure roller 22 arranged on the pressure roller mounting frame 21 is more easily clamped with the two hook members 12.

[0046] Please refer to Figure 1 and Figure 3 In some embodiments, the limiting groove 231 comprises a groove bottom surface 2311, and the groove bottom surface 2311 is used for abutting cooperation with the limiting protrusion 111.

[0047] It can be understood that, in the process of covering the cover body 20, the limiting protrusions 111 can be gradually inserted into the limiting grooves 231, and the limiting protrusions 111 can abut against the groove bottom surfaces 2311 of the limiting grooves 231, so that the two limiting protrusions 111 can limit the offset of the compression roller mounting frame 21 in the first direction, and the limiting protrusions 111 and the limiting grooves 231 are inserted and matched, which can increase the stability of the limiting cooperation of the first limiting part 11 and the second limiting part 23.

[0048] Please refer to Figure 3 In some embodiments, the limiting groove 231 includes a groove bottom surface 2311 and a groove top surface 2312, the width of the groove top surface 2312 is less than the width of the groove bottom surface 2311, and the groove top surface 2312 is used for abutting cooperation with the limiting protrusion 111.

[0049] In the embodiment, the limiting groove 231 has the groove bottom surface 2311 and the groove top surface 2312, the groove top surface 2312 protrudes in a direction away from the compression roller mounting frame 21 relative to the groove bottom surface 2311, that is, the groove top surface 2312 protrudes further from the compression roller mounting frame 21 relative to the groove bottom surface 2311, and the width of the groove top surface 2312 is less than the width of the groove bottom surface 2311, in the process of covering the cover body 20, the limiting protrusions 111 will be in limiting contact with the groove top surface 2312, so that the two limiting protrusions 111 can limit the offset of the compression roller mounting frame 21 in the first direction, and because the width of the groove top surface 2312 is less than the width of the groove bottom surface 2311, the contact area of the groove top surface 2312 and the limiting protrusion 111 is smaller than the contact area of the groove bottom surface 2311 and the limiting protrusion 111, so that the friction between the groove top surface 2312 and the limiting protrusion 111 is smaller than the friction between the groove bottom surface 2311 and the limiting protrusion 111, and the limiting contact between the groove top surface 2312 and the limiting protrusion 111 can be more easily opened and closed than the contact between the groove bottom surface 2311 and the limiting protrusion 111.

[0050] Please refer to Figure 3 In some embodiments, the width of the groove top surface 2312 is h, and h satisfies: 2.5mm≥h≥1mm.

[0051] It can be understood that, in the process of closing the cover 20, the limiting protrusions 111 are in sliding contact with the groove top surface 2312, and the limiting protrusions 111 and the groove top surface 2312 move relative to each other, that is, the limiting protrusions 111 will move along the length direction of the groove top surface 2312, and the width of the groove top surface 2312 determines the contact area between the limiting protrusions 111 and the limiting protrusions 111. When the width h of the groove top surface 2312 is greater than 2.5 mm, the friction between the groove top surface 2312 and the limiting protrusions 111 will be too large, resulting in the need for a relatively large force to open and close the cover 20. When the width h of the groove top surface 2312 is less than 1 mm, the wall thickness defining the groove top surface 2312 will be too thin, resulting in insufficient structural strength to support the abutment of the groove top surface 2312 and the limiting protrusions 111. Therefore, the width h of the groove top surface 2312 satisfies: 2.5 mm≥h≥1 mm, so that the groove top surface 2312 can be limited and matched with the limiting protrusions 111, and the cover 20 can be easily opened and closed.

[0052] Please refer to Figure 3 In some embodiments, the pressure roller mounting frame 21 is provided with a guide inclined surface 24 on the two outer side walls opposite to each other in the first direction, and the guide inclined surface 24 is connected with the groove top surface 2312 to guide the abutment of the limiting protrusions 111 and the groove top surface 2312.

[0053] It should be noted that, when the cover 20 is in the open state, the guide inclined surface 24 is located on the side of the groove top surface 2312 close to the first limiting portion 11, and the first side of the guide inclined surface 24 is connected with the groove top surface 2312, and the second side of the guide inclined surface 24 is inclined towards the middle part of the pressure roller mounting frame 21 in the first direction relative to the first side of the guide inclined surface 24. The first side and the second side are opposite sides of the guide inclined surface 24.

[0054] In the process of closing the cover 20, the second side of the guide inclined surface 24 first contacts the limiting protrusions 111, and the guide inclined surface 24 can guide the limiting protrusions 111 to move into contact with the groove top surface 2312, so that the groove top surface 2312 can be limited and matched with the limiting protrusions 111. The guide inclined surface 24 can play a role in guiding the limiting protrusions 111 and the groove top surface 2312 to limit and match, thereby preventing the pressure roller mounting frame 21 from colliding with the limiting protrusions 111.

[0055] Please refer to Figure 1 and Figure 4 In some embodiments, the cover 20 includes an outer cover 26 and an inner cover 25 connected with the outer cover 26.

[0056] Optionally, the cover 20 comprises two layers of the cover 20, i.e., an outer cover 26 and an inner cover 25, and the outer cover 26 is connectable with the inner cover 25 in at least one of the following manners, such as screwing, buckling, welding, hinging or gluing, so that the outer cover 26 and the inner cover 25 are connected as a whole. Since the cover 20 has two layers of the inner cover 25 and the outer cover 26, the overall rigidity of the cover 20 is increased, so that the cover 20 is less likely to be deformed or skewed, thereby better opening and closing the cover 20.

[0057] Referring to Figure 4 In some embodiments, the pressure roller mounting bracket 21 is arranged on the side of the inner cover 25 away from the outer cover 26.

[0058] It can be understood that in the printer 100, the pressure roller 22 can flatten the paper or other printing materials, so as to ensure that the materials pass through the printing area smoothly during the printing process, thereby avoiding the printing quality problems caused by uneven materials. At the same time, the pressure roller 22 conveys the paper by rotating, so as to ensure the continuity and efficiency of the printing work. Therefore, the pressure roller 22 needs to be in contact with the printing paper on the body 10, i.e., the pressure roller 22 needs to be arranged on the side of the cover 20 facing the body 10. Arranging the pressure roller mounting bracket 21 on the side of the inner cover 25 away from the outer cover 26 can conveniently arrange the pressure roller mounting bracket 21 towards the body 10, so as to conveniently install the pressure roller 22 and simplify the structure of the cover 20.

[0059] Referring to Figure 4 In some embodiments, at least one of the inner cover 25 and the outer cover 26 is provided with a first positioning protrusion 27, and at least the other of the inner cover 25 and the outer cover 26 is provided with a first positioning groove 28, and the first positioning protrusion 27 and the first positioning groove 28 are inserted and matched.

[0060] Specifically, the circumferential edge of the inner cover 25 can be provided with a plurality of first positioning grooves 28 and a plurality of first positioning protrusions 27, and the plurality of first positioning grooves 28 and the plurality of first positioning protrusions 27 are sequentially arranged along the circumference of the inner cover 25, and there is one first positioning protrusion 27 between every two adjacent first positioning grooves 28.

[0061] Similarly, the circumferential edge of the outer cover 26 is also provided with a plurality of first positioning grooves 28 and a plurality of first positioning protrusions 27, and the plurality of first positioning grooves 28 and the plurality of first positioning protrusions 27 are sequentially arranged along the circumference of the outer cover 26, and there is one first positioning groove 28 between every two adjacent first positioning protrusions 27.

[0062] The plurality of first positioning protrusions 27 on the outer cover body 26 are arranged one by one corresponding to the plurality of first positioning grooves 28 on the inner cover body 25, and the plurality of first positioning protrusions 27 on the outer cover body 26 are respectively inserted and matched with the plurality of first positioning grooves 28 on the inner cover body 25, the plurality of first positioning protrusions 27 on the inner cover body 25 are arranged one by one corresponding to the plurality of first positioning grooves 28 on the outer cover body 26, and the plurality of first positioning protrusions 27 on the inner cover body 25 are respectively inserted and matched with the plurality of first positioning grooves 28 on the outer cover body 26, so that the inner cover body 25 and the outer cover body 26 can be connected more firmly, and the inner cover body 25 and the outer cover body 26 can be prevented from being offset and dislocated, and the risk of the pressure roller mounting frame 21 being tilted can be further reduced.

[0063] In some embodiments, the pressure roller mounting frame 21 comprises a fixed seat and a rotating mounting frame connected with the fixed seat, the fixed seat is arranged on the outer cover body 26, and the inner cover body 25 is provided with a through hole, and the rotating mounting frame is arranged in the through hole, and the pressure roller 22 is rotatably mounted on the rotating mounting frame and located on the side of the inner cover body 25 away from the outer cover body 26.

[0064] More specifically, the inner cover body 25 and the outer cover body 26 can have a mounting space therebetween, the fixed seat is connected with the outer cover body 26 and located in the mounting space, the inner cover body 25 is provided with two through holes in communication with the mounting space, the two through holes are arranged in the first direction, the rotating mounting frame can be connected with the fixed seat, and the rotating mounting frame has two connecting arms, the two connecting arms can be respectively arranged in the two through holes, and one end of each of the two connecting arms extends to the side of the inner cover body 25 away from the outer cover body 26, and the opposite ends of the pressure roller 22 are rotatably mounted on the one end of each of the two connecting arms extending out of the through hole, so that the pressure roller 22 is located on the side of the inner cover body 25 away from the outer cover body 26, thereby the pressure roller 22 can be arranged on the side of the cover body 20 facing the fuselage 10, and when the cover body 20 is in the closed state, the pressure roller 22 can be used to flatten the printing paper, and the offset of the pressure roller mounting bracket can be further prevented.

[0065] Of course, it needs to be noted that when the pressure roller mounting seat is connected with the outer cover body 26, the two second limiting portions 23 are arranged on the portions of the two connecting arms extending out of the through hole, so that the two second limiting portions 23 can be limited and matched with the two first limiting portions 11, thereby preventing the two connecting arms from being offset, and the two ends of the pressure roller 22 can be respectively clamped with the two hook members 12.

[0066] In some embodiments, at least one of the inner cover body 25 and the rotating mounting frame is provided with a second positioning protrusion, and at least one of the other of the inner cover body 25 and the rotating mounting frame is provided with a second positioning groove, and the second positioning protrusion and the second positioning groove are inserted and matched.

[0067] Optionally, the inner cover 25 can be provided with a second positioning protrusion, the connecting arm of the rotating mounting frame can be provided with a second positioning groove, the pressure roller 22 is rotatably arranged on the connecting arm, the second positioning protrusion and the second positioning groove are inserted and matched, the rotating mounting frame can be clamped with the inner cover 25, the stability of the rotating mounting frame can be further increased, so that the pressure roller 22 can be further prevented from deviating in the first direction.

[0068] Of course, the inner cover 25 can be provided with a second positioning groove, the connecting arm of the rotating mounting frame can be provided with a second positioning protrusion, the inner cover 25 can be provided with a second positioning groove and a second positioning protrusion at the same time, and the connecting arm of the rotating mounting frame can be provided with a second positioning groove and a second positioning protrusion at the same time, as long as the inner cover 25 and the rotating mounting frame can be inserted and matched through the second positioning protrusion and the second positioning groove to increase the stability of the rotating mounting frame.

[0069] Please refer to Figure 1 and Figure 4 In some embodiments, the pressure roller 22 includes a roller body 221 and a rotating shaft 222, the roller body 221 is sleeved on the rotating shaft 222, the rotating shaft 222 is rotatably arranged on the pressure roller mounting frame 21, and the two ends of the rotating shaft 222 are clamped with the two clamping hooks 12 when the cover 20 is in the closed state.

[0070] Specifically, the roller body 221 is the main part of the pressure roller 22, the main function of the roller body 221 is to transmit pressure, and the roller body 221 is usually made of wear-resistant and high-strength materials, and the shape of the roller body 221 can be cylindrical, the rotating shaft 222 is a component connecting the roller body 221 and the pressure roller mounting frame 21, and the roller body 221 is sleeved on the rotating shaft 222, the opposite ends of the rotating shaft 222 are connected with the pressure roller mounting frame 21, and the two ends of the rotating shaft 222 can be clamped with the two clamping hooks 12 when the cover 20 is in the closed state, which can prevent the rotating shaft 222 from moving in the first direction, so that the roller body 221 can rotate freely, and the roller body 221 can be conveniently flattened.

[0071] Please refer to Figure 1 and Figure 4 In some embodiments, the cover 20 has an opposite connecting end 201 and a movable end 202, the connecting end 201 is rotatably connected with the body 10, the movable end 202 is provided with the pressure roller mounting frame 21, and the clamping hook 12 is located on the side of the first limiting portion 11 away from the connecting end 201.

[0072] Specifically, the overall shape of the cover body 20 is a rectangular structure, one end of the cover body 20 is a connecting end 201, the other end of the cover body 20 is a movable end 202, the connecting end 201 and the movable end 202 are opposite ends of the cover body 20, the connecting end 201 can be rotatably connected with the machine body 10, so that the cover body 20 can rotate relative to the machine body 10 to switch between the closed state and the open state. More clearly, the cover body 20 rotates towards the direction close to the machine body 10 until the movable end 202 of the cover body 20 contacts the machine body 10, at this time the cover body 20 is in the closed state, and the cover body 20 rotates away from the machine body 10 until the cover body 20 is arranged at a preset angle with the machine body 10, at this time the cover body 20 is in the open state.

[0073] And the pressure roller mounting frame 21 is arranged at the movable end 202, the clamping pieces 12 are located on the side of the first limiting portion 11 away from the connecting end 201, and it can also be said that the clamping pieces 12, the first limiting portion 11 and the connecting end 201 are arranged in a straight line in sequence. In the process of closing the cover body 20, the movable end 202 gradually moves towards the direction where the first limiting portion 11 and the clamping pieces 12 are located, and because the first limiting portion 11 is closer to the connecting end 201 than the clamping pieces 12, the first limiting portion 11 will contact the pressure roller mounting frame 21 on the movable end 202 first, that is, the first limiting portion 11 will first limit cooperate with the second limiting portion 23. After the two first limiting portions 11 limit the displacement of the pressure roller mounting frame 21 in the first direction, the two ends of the pressure roller 22 are respectively clamped with the two clamping pieces 12, so that it can be ensured that before the two ends of the pressure roller 22 are clamped with the two clamping pieces 12, the two ends of the pressure roller 22 are respectively opposite to the two clamping pieces 12, so that the cover body 20 is closed with the machine body 10 more stably.

[0074] Please refer to Figure 1 and Figure 5 In some embodiments, the first limiting portion 11 includes a guide protrusion 112 located on the side of the first limiting portion 11 facing the clamping piece 12, and the guide protrusion 112 is used to guide one end of the pressure roller 22 to be clamped with the clamping piece 12.

[0075] Optionally, the first limiting portion 11 has a side wall arranged towards the clamping piece 12, the side wall is provided with a guide protrusion 112, the guide protrusion 112 has an arc-shaped guide surface, and the arc-shaped guide surface is also arranged towards the clamping piece 12. In the process of closing the cover body 20, one end of the pressure roller 22 will contact the arc-shaped guide surface, and under the guidance of the arc-shaped guide surface, one end of the pressure roller 22 will be inserted into the clamping groove of the clamping piece 12. By arranging the guide protrusion 112, the clamping of the pressure roller 22 with the clamping piece 12 can be facilitated.

[0076] 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.

[0077] 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 printer characterized by comprising: The utility model relates to a kind of printer, including: Machine body, with two first limit parts and two clamping hook parts, two The first limit part is spaced apart along the first direction, and two The first limit part is respectively with two The clamping hook part one-to-one corresponding arrangement; Cover, with the machine body movably connected, so that the cover has closed state and open state, the cover has pressure roller mounting bracket and the pressure roller assembled on the pressure roller mounting bracket, the pressure roller mounting bracket has two second limit parts, two The second limit part is located respectively on the pressure roller mounting bracket along the first direction two outer side walls opposite; Wherein, when the cover is in closed state, two The second limit part is located between two The first limit part, and two The second limit part is respectively limited with two The first limit part cooperation, to make two ends of the pressure roller respectively with two The clamping hook part is connected.

2. The printer of claim 1, wherein, When the cover is in closed state, the distance between the first limit part and the second limit part matched is d, d satisfies: 0.5mm≥d≥0.05mm.

3. The printer of claim 1, wherein, The second limit part includes limit groove, the first limit part includes limit protrusion, and the limit protrusion is used to limit groove limit cooperation when the cover is in closed state.

4. The printer of claim 3, wherein, The limit groove includes groove bottom surface, and the groove bottom surface is used to limit protrusion abutment cooperation.

5. The printer of claim 3, wherein, The limit groove includes groove bottom surface and groove top surface, the width of the groove top surface is less than the width of the groove bottom surface, and the groove top surface is used to limit protrusion abutment cooperation.

6. The printer of claim 5, wherein, The width of the groove top surface is h, and h satisfies: 2.5mm≥h≥1mm.

7. The printer of claim 5, wherein, The pressure roller mounting bracket is provided with guide inclined plane on two outer side walls opposite along the first direction, and the guide inclined plane is connected with the groove top surface to guide the limit protrusion and the groove top surface abutment.

8. The printer of claim 1, wherein, The cover includes outer cover and inner cover connected with the outer cover.

9. The printer of claim 8, wherein, The pressure roller mounting bracket is arranged on the side of the inner cover away from the outer cover.

10. The printer of claim 8, wherein, The first positioning protrusion is arranged on at least one of the inner cover and the outer cover, and the first positioning groove is arranged on at least the other one of the inner cover and the outer cover, and the first positioning protrusion and the first positioning groove are inserted and matched.

11. The printer of claim 8, wherein, The pressure roller mounting bracket includes a fixed seat and a rotating mounting bracket connected with the fixed seat, the fixed seat is arranged on the outer cover, and the inner cover is provided with a through hole, the rotating mounting bracket is arranged in the through hole, and the pressure roller is rotatably mounted on the rotating mounting bracket and located on the side of the inner cover away from the outer cover.

12. The printer of claim 11, wherein, At least one of the inner cover and the rotating mounting bracket is provided with a second positioning protrusion, and at least the other one of the inner cover and the rotating mounting bracket is provided with a second positioning groove, and the second positioning protrusion and the second positioning groove are inserted and matched.

13. The printer of claim 1, wherein, The pressure roller includes a roller body and a rotating shaft, the roller body is sleeved on the rotating shaft, the rotating shaft is rotatably mounted on the pressure roller mounting bracket, and two ends of the rotating shaft are respectively connected with two clamping hook parts when the cover is in closed state.

14. The printer of claim 1, wherein, The cover has oppositely arranged connecting end and movable end, the connecting end is rotationally connected with the fuselage, the movable end is provided with the compression roller mounting rack, and the hooking part is located on the side of the first limiting part away from the connecting end.

15. The printer of claim 14, wherein, The first limiting part comprises a guide protrusion, the guide protrusion is located on the side of the first limiting part towards the hooking part, and the guide protrusion is used for guiding the one end of the compression roller to be connected with the hooking part.

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