Printer

Abstract

The utility model discloses a printer, and relates to the technical field of printer equipment, the printer comprises a cover body, a host and a plurality of rotating shafts, a plurality of connecting arms are arranged on one side edge of the cover body, a plurality of connecting positions are arranged on the host, and each connecting arm is provided with a first mounting hole extending along a first direction; each connecting position is provided with a second mounting hole extending in the first direction, the multiple second mounting holes are opposite to the multiple first mounting holes in position, so that each second mounting hole can communicate with the corresponding first mounting hole, and in the first direction, the distance d between every two adjacent connecting arms is smaller than the length h of the rotating shaft; each rotating shaft can penetrate through the first mounting hole and the second mounting hole which are communicated with each other from the position between every two adjacent connecting arms, so that the cover body can be rotationally connected with the main body, and each rotating shaft only needs to sequentially penetrate through one first mounting hole and one second mounting hole; and the rotating shaft can be conveniently, quickly and accurately aligned with the first mounting hole and the second mounting hole.

Description

Technical Field

[0001] This application relates to the field of printer equipment technology, and more particularly to a printer. Background Technology

[0002] In related technologies, a printer includes a main unit and a cover. A rotating shaft is sequentially inserted into the cover and the main unit, allowing the cover and the main unit to be rotatably connected. However, during the insertion of the rotating shaft into the cover and the main unit, the shaft needs to be sequentially inserted into the mounting holes on opposite sides of the cover, making it difficult to align the rotating shaft with the mounting holes on both sides of the cover, thus making installation inconvenient. Utility Model Content

[0003] This application provides a printer that solves the technical problem that the rotating shaft is difficult to align with the mounting hole during the assembly of the printer cover and the main unit.

[0004] In a first aspect, embodiments of this application provide a printer, which includes:

[0005] The cover body is provided with a plurality of connecting arms, the plurality of connecting arms being located on the same side of the cover body and arranged at intervals along a first direction, and each connecting arm being provided with a first mounting hole extending along the first direction;

[0006] The host has multiple connection positions, and the multiple connection positions and multiple connection arms are arranged along the first direction. The multiple connection positions and multiple connection arms are configured in a one-to-one correspondence. Each connection position has a second mounting hole extending along the first direction. The multiple second mounting holes are respectively opposite to the positions of the multiple first mounting holes.

[0007] Multiple rotating shafts are provided, the number of which matches the number of connecting arms. The distance between two adjacent connecting arms along the first direction is d, and the length of the rotating shaft along the first direction is h. d and h satisfy: d > h. Each rotating shaft passes through the first mounting hole and the second mounting hole, which are positioned opposite each other, between two adjacent connecting arms, so that the rotating shaft can be quickly and accurately aligned with the first mounting hole and the second mounting hole.

[0008] In some embodiments, the shaft includes two ends and a middle portion located between the two ends, the middle portion passing through the first mounting hole and the second mounting hole, and one of the two ends extending out of the first mounting hole.

[0009] In some embodiments, the distance between two adjacent connecting arms along the first direction is d, the length of the rotating shaft is h, and the length of the end extending from the first mounting hole is h1, wherein d, h, and h1 satisfy: d > h + h1.

[0010] In some embodiments, the axis lines of two adjacent pivots are collinear.

[0011] In some embodiments, the connecting arm comprises a connecting column defining the first mounting hole, and a side wall of the connecting column is provided with a viewing port communicating with the first mounting hole.

[0012] In some embodiments, the top surface of the connecting column is provided with the viewing port when the cover is in the position of opening the main machine.

[0013] In some embodiments, the side surface of the connecting column is provided with the viewing port when the cover is in the position of opening the main machine.

[0014] In some embodiments, the connecting arm comprises a connecting column defining the first mounting hole, and one end of the connecting column has a penetrating hole through which the pivot is arranged in the first mounting hole, and the radial dimension of the penetrating hole is greater than the radial dimension of the pivot.

[0015] In some embodiments, the radial dimension of the pivot is r, and the radial dimension of the penetrating hole is a, and r and a satisfy: 2cm≥a-r≥0.5cm.

[0016] In some embodiments, the inner side surface of the first mounting hole is provided with at least one first protrusion, and the inner side surface of the penetrating hole is provided with a second protrusion, and along the direction perpendicular to the axial direction of the pivot, the at least one first protrusion and the second protrusion are respectively located on the opposite sides of the pivot to limit the movement of the pivot along the direction perpendicular to the axial direction of the pivot.

[0017] In some embodiments, the printer further comprises a cover plate covering the connecting arm, and the cover plate is provided with a third protrusion and a fourth protrusion towards the side surface of the connecting arm, the third protrusion and the fourth protrusion are spaced apart, and the end of the pivot protruding out of the first mounting hole is clamped between the third protrusion and the fourth protrusion.

[0018] In some embodiments, one side of the third protrusion towards the fourth protrusion is provided with a first arc surface, and one side of the fourth protrusion towards the third protrusion is provided with a second arc surface, and the end of the pivot protruding out of the first mounting hole is clamped between the first arc surface and the second arc surface.

[0019] In some embodiments, the free end of the third protrusion away from the cover plate and the free end of the fourth protrusion away from the cover plate have a spacing b, and the radial dimension of the pivot is r, and b and r satisfy: b>r.

[0020] In some embodiments, the cover plate further comprises a baffle plate arranged along the first direction towards the side of the connecting arm, the baffle plate is used to limit the axial movement of the rotating shaft.

[0021] In some embodiments, the cover plate further comprises a clamping piece arranged towards the side of the connecting arm, the clamping piece is used to clamp the connecting arm.

[0022] In some embodiments, the connecting arm comprises a connecting column, the connecting column defines the first mounting hole, and the connecting column has an insertion end, the rotating shaft is inserted into the first mounting hole from the insertion end, and the side wall of the insertion end is provided with a notch, the notch is in communication with the first mounting hole.

[0023] In some embodiments, the connecting arm protrudes from the surface of the cover body.

[0024] The printer based on the embodiments of the present application has at least the following beneficial effects:

[0025] By arranging multiple connecting arms on one side of the cover body, and multiple connecting positions on the main body, the multiple connecting positions and the multiple connecting arms are arranged along the first direction, each connecting arm is provided with a first mounting hole extending along the first direction, each connecting position is provided with a second mounting hole extending along the first direction, and the multiple second mounting holes are respectively opposite to the multiple first mounting holes in position, so that each second mounting hole can be in communication with a corresponding first mounting hole, the number of the multiple rotating shafts can match the number of the multiple connecting arms, and the distance d of the adjacent two connecting arms along the first direction is less than the length h of the rotating shaft along the first direction, so that each rotating shaft can be inserted into the first mounting hole and the second mounting hole in communication with each other from between the adjacent two connecting arms, thereby the multiple rotating shafts can rotate and connect the multiple connecting arms to the multiple connecting positions respectively, so that the cover body can be rotationally connected to the main body, and each rotating shaft only needs to be sequentially inserted into one first mounting hole and one second mounting hole, which can facilitate the quick and accurate alignment of the rotating shaft with the first mounting hole and the second mounting hole. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in 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 the prior art description. 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 effort.

[0027] Figure 1 A perspective structural schematic diagram of a printer provided by the embodiments of the present application;

[0028] Figure 2The first perspective view of the cover provided by the embodiment of the present application is shown in the structure diagram.

[0029] Figure 3 The structure diagram of the host provided by the embodiment of the present application is shown in the structure diagram.

[0030] Figure 4 The second perspective view of the cover provided by the embodiment of the present application is shown in the structure diagram.

[0031] Figure 5 The third perspective view of the cover provided by the embodiment of the present application is shown in the structure diagram.

[0032] Figure 6 The enlarged structure diagram of A in the above figure is shown in the structure diagram. Figure 5

[0033] Figure 7 The fourth perspective view of the cover provided by the embodiment of the present application is shown in the structure diagram.

[0034] Figure 8 The enlarged structure diagram of B in the above figure is shown in the structure diagram. Figure 7

[0035] The structure diagram of the cover plate installed on the connecting arm provided by the embodiment of the present application is shown in the structure diagram. Figure 9

[0036] The structure diagram of the cover plate clamping the rotating shaft provided by the embodiment of the present application is shown in the structure diagram. Figure 10

[0037] The structure diagram of the cover plate provided by the embodiment of the present application is shown in the structure diagram. Figure 11 The legend of the figures is shown in the table.

[0038]

[0039] 100, printer; 10, cover; 1, connecting arm; 11, connecting column; 111, first mounting hole; 112, observation hole; 113, penetrating hole; 114, first protrusion; 115, second protrusion; 116, insertion end; 1161, notch; 20, host; 21, connecting position; 210, second mounting hole; 30, rotating shaft; 31, end portion; 32, intermediate portion; 40, cover plate; 41, third protrusion; 411, first arc surface; 42, fourth protrusion; 421, second arc surface; 43, baffle; 44, hook piece. DETAILED DESCRIPTION

[0040] 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 figures and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0041] Please refer to​​Figures 1 to 4 A printer 100 provided by the embodiment of the present application, the printer 100 comprising a cover 10, a main machine 20 and a plurality of rotating shafts 30, the cover 10 is provided with a plurality of connecting arms 1, the plurality of connecting arms 1 are located on the same side of the cover 10, and the plurality of connecting arms 1 are arranged at intervals along a first direction, each connecting arm 1 is provided with a first mounting hole 111 extending along the first direction, the main machine 20 is provided with a plurality of connecting positions 21, the plurality of connecting positions 21 are arranged along the first direction with the plurality of connecting arms 1, and the plurality of connecting positions 21 are arranged one by one with the plurality of connecting arms 1, each connecting position 21 is provided with a second mounting hole 210 extending along the first direction, the plurality of second mounting holes 210 are respectively opposite to the plurality of first mounting holes 111 in position, the number of the plurality of rotating shafts 30 matches the number of the plurality of connecting arms 1, the distance between the adjacent two connecting arms 1 along the first direction is d, the length of the rotating shaft 30 along the first direction is h, d and h satisfy: d>h, and each rotating shaft 30 is arranged in the first mounting hole 111 and the second mounting hole 210 opposite in position from between the adjacent two connecting arms 1, so that the rotating shaft 30 is quickly and accurately aligned with the first mounting hole 111 and the second mounting hole 210.

[0042] Optionally, the cover 10 comprises two first sides and two second sides, the two first sides are located on opposite sides of the cover 10 in the length direction, the two second sides are located on opposite sides of the cover 10 in the width direction, one of the two first sides is provided with a plurality of connecting arms 1, the plurality of connecting arms 1 are arranged at intervals along the first direction, the first direction is the width direction of the cover 10, Figure 1 The X-axis direction in the above is the first direction, the connecting arm 1 is provided with the first mounting hole 111 extending along the first direction, and the part of the connecting arm 1 provided with the first mounting hole 111 extends out of the cover 10 along the length direction of the cover 10.

[0043] In combination with Figure 3 The main machine 20 is provided with a plurality of connecting positions 21, the plurality of connecting positions 21 are arranged along the first direction with the plurality of connecting arms 1, and the plurality of connecting positions 21 are arranged one by one with the plurality of connecting arms 1, each connecting position 21 is provided with a second mounting hole 210 extending along the first direction, the plurality of second mounting holes 210 are respectively opposite to the plurality of first mounting holes 111 in position, so that the second mounting hole 210 opposite in position and the first mounting hole 111 are in communication with each other, and the axis of the second mounting hole 210 is collinear with the axis of the first mounting hole 111 opposite in position.

[0044] In this embodiment, the cover 10 is provided with two adjacent connecting arms 1, and the main unit 20 is provided with two connecting positions 21. The two connecting arms 1 are respectively arranged opposite to the two connecting positions 21, so that the two first mounting holes 111 are respectively arranged opposite to the two second mounting holes 210. The two first mounting holes 111 are arranged at intervals along the first direction, and the two second mounting holes 210 are arranged at intervals along the first direction. The two first mounting holes 111 are located between the two second mounting holes 210, dividing the two first mounting holes 111 and the two second mounting holes 210 into two groups. Each group has a first mounting hole 111 and a second mounting hole 210 that are positioned opposite each other.

[0045] Combination Figure 2 The number of multiple rotating shafts 30 is two, the distance between two adjacent connecting arms 1 along the first direction is d, and the length of each rotating shaft 30 along the first direction is h, d>h, so that the rotating shaft 30 can be placed between two adjacent rotating shafts 30, and the rotating shaft 30 can be easily inserted into a set of first mounting holes 111 and second mounting holes 210 with opposite positions.

[0046] Specifically, when the cover 10 is rotatably mounted on the main body 20, the first of the two rotating shafts 30 can be placed between two adjacent connecting arms 1, and the first rotating shaft 30 passes through the first set of corresponding first mounting holes 111 and second mounting holes 210. Then, the second of the two rotating shafts 30 is placed between two adjacent connecting arms 1, and the second rotating shaft 30 passes through the second set of corresponding first mounting holes 111 and second mounting holes 210, so that the cover 10 can be rotatably connected to the main body. Each rotating shaft 30 only needs to pass through one first mounting hole 111 and one second mounting hole 210 in sequence, which facilitates quick and accurate alignment of the rotating shaft 30 with the first mounting hole 111 and the second mounting hole 210. In other embodiments, the number of connecting arms 1 can also be greater than two. This application embodiment does not specify the number of connecting arms 1.

[0047] Please see Figure 2 In some embodiments, the shaft 30 includes two ends 31 and a middle portion 32 located between the two ends, the middle portion 32 passing through the first mounting hole 111 and the second mounting hole 210, and one of the two ends 31 extending out of the first mounting hole 111.

[0048] For ease of description, the rotating shaft 30 is divided into three parts: the rotating shaft 30 includes two ends 31 and a middle part 32 located between the two ends. However, the rotating shaft 30 is actually integrally formed. When the rotating shaft 30 passes through the first mounting hole 111 and the second mounting hole 210, the middle part 32 is located inside the first mounting hole 111 and the second mounting hole 210. One of the two ends 31 can extend from the side of the first mounting hole 111 away from the second mounting hole 210, so that the end 31 is located outside the first mounting hole 111 and the second mounting hole 210. Thus, the rotating shaft 30 can be pulled out from the first mounting hole 111 and the second mounting hole 210 by hand, and the rotating shaft 30 can be easily disassembled.

[0049] Please see Figure 2 In some embodiments, the distance between two adjacent connecting arms 1 along the first direction is d, the length of the rotating shaft 30 is h, and the length of the end 31 extending from the first mounting hole 111 is h1. d, h and h1 satisfy: d > h + h1.

[0050] It is understandable that when the cover 10 is rotated and installed on the main unit 20, the first of the two rotating shafts 30 is placed between two adjacent connecting arms 1, and the first rotating shaft 30 passes through the first set of opposite mounting holes 111 and 210. At this time, the end 31 of the first rotating shaft 30 extends outward from the first mounting hole 111. The end 31 of the first rotating shaft 30 will occupy the space between two adjacent connecting arms 1. If d < h + h1, the second of the two rotating shafts 30 cannot be placed between two adjacent connecting arms 1, making it inconvenient to install the second rotating shaft 30.

[0051] In this embodiment, d, h and h1 satisfy: d > h + h1. Therefore, even if the first rotating shaft 30 has been installed, there is still enough space between the two connecting arms 1 to prevent the second rotating shaft 30 from being installed. The second rotating shaft 30 can be easily inserted into the first mounting hole 111 and the second mounting hole 210 in the second set of opposite positions, which can further facilitate the installation of the rotating shaft 30.

[0052] Please see Figure 2 In some embodiments, the centerlines of two adjacent rotating shafts 30 are collinear.

[0053] Optionally, the centerlines of the multiple first mounting holes 111 can be collinear, and the centerlines of the first mounting holes 111 can be collinear with the centerlines of the opposite second mounting holes 210, so that the centerlines of the multiple first mounting holes 111 and the multiple second mounting holes 210 can all be collinear. Thus, after each rotating shaft 30 passes through the opposite first mounting holes 111 and second mounting holes 210, the centerlines of the multiple rotating shafts 30 can also be collinear, so that the cover 10 can rotate more stably relative to the host 20 around the centerline of the rotating shaft 30.

[0054] Please see Figure 4 In some embodiments, the connecting arm 1 includes a connecting post 11, which defines a first mounting hole 111. The side wall of the connecting post 11 is provided with an observation port 112, which communicates with the first mounting hole 111.

[0055] Optionally, the portion of the connecting arm 1 extending out of the cover 10 is a connecting post 11. The connecting post 11 defines a first mounting hole 111, and the connecting post 11 includes a side wall axially arranged around the first mounting hole 111. The side wall is provided with an observation port 112, which can communicate with the first mounting hole 111. When the rotating shaft 30 is inserted into the first mounting hole 111, at least a portion of the rotating shaft 30 can be exposed from the observation port 112, thereby facilitating observation of the insertion of the rotating shaft 30. If the rotating shaft 30 deviates, it can be adjusted in time, and the rotating shaft 30 can be inserted into place more quickly.

[0056] In some embodiments, when the cover 10 is in the position of opening the host 20, the top surface of the connecting post 11 is provided with an observation port 112, through which the user can see the insertion of the rotating shaft 30, thereby making it easier to check whether the rotating shaft 30 has shifted. Once the rotating shaft 30 shifts, it can be adjusted in time.

[0057] In some embodiments, when the cover 10 is in the position of opening the host 20, the side of the connecting post 11 is provided with an observation port 112, and the observation port 112 is set towards the host 20. The user can see the insertion of the rotating shaft 30 through the observation port 112, which makes it easier to check whether the rotating shaft 30 has shifted. Once the rotating shaft 30 shifts, it can be adjusted in time.

[0058] Please see Figure 5 and Figure 6 In some embodiments, the connecting arm 1 includes a connecting post 11 defining a first mounting hole 111, and one end of the connecting post 11 has an insertion hole 113 through which the rotating shaft 30 passes through the first mounting hole 111, the radial dimension of the insertion hole being greater than the radial dimension of the rotating shaft 30.

[0059] Optionally, the connecting post 11 has an insertion hole 113 at one end along the first direction. The insertion hole 113 can extend along the first direction, so that the insertion hole 113 communicates with the first mounting hole 111. The axial direction of the insertion hole 113 is the same as the axial direction of the first mounting hole 111, so that the rotating shaft 30 can be inserted into the first mounting hole 111 from the insertion hole. Since the radial dimension of the insertion hole 113 is larger than the radial dimension of the rotating shaft 30, the rotating shaft 30 can be easily inserted into the insertion hole 113 and inserted into the first mounting hole 111 along the insertion hole 113, so that the rotating shaft 30 can be quickly and accurately aligned with the first mounting hole 111 by the guidance of the insertion hole 113.

[0060] In this embodiment, each of the two adjacent connecting arms 1 includes a connecting post 11. The two connecting posts 11 have an insertion hole 113 at their close ends, so that the rotating shaft 30 can be placed between the two adjacent connecting arms 1 and inserted into the first mounting hole 111 through the insertion hole 113, which makes it convenient for the rotating shaft 30 to be inserted into the first mounting hole 111.

[0061] In some embodiments, the radial dimension of the rotating shaft 30 is r, and the radial dimension of the through hole 113 is a, where r and a satisfy: 2cm ≥ a ≥ 0.5cm.

[0062] Alternatively, if ar > 2cm, although the shaft 30 can be easily inserted into the insertion hole 113, the radial dimension of the insertion hole 113 will be too large, resulting in a larger size of the connecting post 11, thereby increasing the overall size of the printer 100.

[0063] If ar < 0.5cm, the radial dimension of the insertion hole 113 will be too small, making it difficult for the rotating shaft 30 to be inserted into the insertion hole 113, and consequently, difficult for the rotating shaft 30 to be aligned with the first mounting hole 111. Therefore, when r and a satisfy: 2cm ≥ ar ≥ 0.5cm, the rotating shaft 30 can be easily aligned with the first mounting hole 111 through the insertion hole 113 without increasing the size of the printer 100.

[0064] Please see Figure 7 and Figure 8 In some embodiments, the inner side of the first mounting hole 111 is provided with at least one first protrusion 114, and the inner side of the insertion hole 113 is provided with a second protrusion 115. Along the axial direction perpendicular to the rotating shaft 30, at least the first protrusion 114 and the second protrusion 115 are located on opposite sides of the rotating shaft 30 to restrict the movement of the rotating shaft 30 along the axial direction perpendicular to the rotating shaft 30.

[0065] Optionally, the radial dimension of the first mounting hole 111 is larger than the radial dimension of the rotating shaft 30, and the inner side of the first mounting hole 111 is provided with at least one first protrusion 114. The distance by which the first protrusion 114 protrudes relative to the inner side of the first mounting hole 111 is c, and c+r is also smaller than the radial dimension of the first mounting hole 111, so that the rotating shaft 30 can be inserted into the first mounting hole 111. The inner side of the insertion hole 113 is provided with a second protrusion 115. At least one first protrusion 114 and the second protrusion 115 are respectively provided on opposite sides of the rotating shaft 30 along the axial direction perpendicular to the rotating shaft 30, so that at least one first protrusion 114 and the second protrusion 115 can limit the rotating shaft 30 to restrict the movement of the rotating shaft 30 along the axial direction perpendicular to the rotating shaft 30, so that the rotating shaft 30 can rotate more stably around the axial direction of the rotating shaft 30 in the first mounting hole 111, and the cover 10 can be opened and closed more smoothly.

[0066] Please see Figure 9 and Figure 10 In some embodiments, the printer 100 further includes a cover plate 40, which covers the connecting arm 1, and the cover plate 40 has a third protrusion 41 and a fourth protrusion 42 on the side facing the connecting arm 1. The third protrusion 41 and the fourth protrusion 42 are spaced apart, and the end 31 of the rotating shaft 30 extending out of the first mounting hole 111 is clamped between the third protrusion 41 and the fourth protrusion 42.

[0067] Optionally, the cover body 10 is provided with two connecting arms 1, and the cover plate 40 can cover the two connecting arms 1 to block the first mounting hole 111 on the connecting arm 1, which can prevent dust from entering the first mounting hole 111, so that the cover body 10 can rotate more smoothly around the axis of the rotating shaft 30, and the cover plate 40 can increase the aesthetics after covering the two connecting arms 1.

[0068] In this embodiment, the cover plate 40 is provided with a third protrusion 41 and a fourth protrusion 42 on the side facing the connecting arm 1. The third protrusion 41 and the fourth protrusion 42 can be spaced apart along the axial direction perpendicular to the rotating shaft 30, and the end 31 of the rotating shaft 30 extending out of the first mounting hole 111 is sandwiched between the third protrusion 41 and the fourth protrusion 42, which can further restrict the movement of the rotating shaft 30 along the axial direction perpendicular to the rotating shaft 30.

[0069] Please see Figure 10 and Figure 11 In some embodiments, the third protrusion 41 has a first arc surface 411 on the side facing the fourth protrusion 42, and the fourth protrusion 42 has a second arc surface 421 on the side facing the third protrusion 41. The end 31 of the rotating shaft 30 extending out of the first mounting hole 111 is clamped between the first arc surface 411 and the second arc surface 421.

[0070] Optionally, the sides of the third protrusion 41 and the fourth protrusion 42 that are close to each other are arc surfaces, and the side of the third protrusion 41 facing the fourth protrusion 42 is the first arc surface 411, and the side of the fourth protrusion 42 facing the third protrusion 41 is the second arc surface 421. The first arc surface 411 and the second arc surface 421 are both adapted to the outer surface of the rotating shaft 30, so that the end 31 of the rotating shaft 30 extending out of the first mounting hole 111 can be clamped between the first arc surface 411 and the second arc surface 421, and the first arc surface 411 and the second arc surface 421 can clamp the rotating shaft 30, so that the rotating shaft 30 can be installed more stably.

[0071] Please see Figure 10 In some embodiments, the distance between the free end of the third protrusion 41 away from the cover 10 and the free end of the fourth protrusion 42 away from the cover 10 is b, and the radial dimension of the rotating shaft 30 is r, where b and r satisfy: b > r.

[0072] Optionally, the end of the third protrusion 41 away from the cover plate 40 is the free end of the third protrusion 41, and the first arc surface 411 is located between the cover plate 40 and the free end of the third protrusion 41. The end of the fourth protrusion 42 away from the cover plate 40 is the free end of the fourth protrusion 42, and the second arc surface 421 is located between the cover plate 40 and the free end of the fourth protrusion 42. The distance between the free end of the third protrusion 41 and the free end of the fourth protrusion 42 along the axial direction perpendicular to the rotating shaft 30 is b. When the cover plate 40 is installed on the connecting arm 1, the rotating shaft 30 is inserted between the free end of the third protrusion 41 and the free end of the fourth protrusion 42. When b and r satisfy: b > r, the rotating shaft 30 can be easily inserted between the free end of the third protrusion 41 and the free end of the fourth protrusion 42, thereby facilitating the engagement of the rotating shaft 30 between the first arc surface 411 and the second arc surface 421.

[0073] Please see Figure 10 In some embodiments, the cover plate 40 is also provided with a baffle 43 on the side facing the connecting arm 1. The baffle 43 and the rotating shaft 30 are arranged along a first direction. The baffle 43 is used to restrict the rotating shaft 30 from moving along its axial direction.

[0074] Optionally, the cover plate 40 is provided with two baffles 43 on the side facing the connecting arm 1. The two baffles 43 and the two rotating shafts 30 are arranged along the first direction, and the two baffles 43 are located between the two rotating shafts 30. The two rotating shafts 30 are respectively provided with one-to-one correspondence with the two baffles 43. The end 31 of each rotating shaft 30 extending out of the first mounting hole 111 abuts against the corresponding baffle 43, so that the baffle 43 can restrict the corresponding rotating shaft 30 from moving along the axial direction of the rotating shaft 30. Thus, the baffle 43 can restrict the corresponding rotating shaft 30 from disengaging from the first mounting hole 111 along the axial direction of the rotating shaft 30, so that the rotating shaft 30 can be more stably installed in the first mounting hole 111.

[0075] Please see Figure 10 In some embodiments, the cover plate 40 is also provided with a hook 44 on the side facing the connecting arm 1, and the hook 44 is engaged with the connecting arm 1.

[0076] Optionally, the cover plate 40 is also provided with a hook 44 on the side facing the connecting arm 1. The connecting arm 1 is provided with a slot that matches the hook 44. When installing the cover plate 40, the hook 44 can be engaged with the slot, so that the cover plate 40 can be detachably installed on the connecting arm 1. Thus, the cover plate 40 can be easily installed on the connecting arm 1 through the hook 44, and the cover plate 40 can also be easily removed from the connecting arm 1.

[0077] Please see Figure 6 In some embodiments, the connecting arm 1 includes a connecting post 11 defining a first mounting hole 111, and the connecting post 11 has an insertion end 116. The rotating shaft 30 passes through the insertion end 116 into the first mounting hole 111. The side wall of the insertion end 116 is provided with a notch 1161, which communicates with the first mounting hole 111.

[0078] Optionally, the cover 10 is provided with two connecting arms 1. Among the two adjacent connecting posts 11, the ends of the two connecting posts 11 that are close to each other are the insertion ends 116. When the cover 10 is installed on the host 20, the rotating shaft 30 can be set between the two connecting posts 11, or the rotating shaft 30 can be set between the two insertion ends 116, and the rotating shaft 30 can be inserted from the insertion end 116 into the first mounting hole 111.

[0079] In this embodiment, the insertion end 116 can define a through hole 113, which communicates with the first mounting hole 111. A notch 1161 is provided on the side wall of the through hole 113, which communicates with the through hole 113. When installing the rotating shaft 30, the rotating shaft 30 can be placed into the through hole 113 through the notch 1161 and inserted into the first mounting hole 111 through the through hole 113, which further facilitates the insertion of the rotating shaft 30 into the first mounting hole 111. When disassembling the rotating shaft 30, after the rotating shaft 30 is pulled out from the first mounting hole 111, the rotating shaft 30 can be detached from the connecting post 11 through the notch 1161, which facilitates the disassembly of the rotating shaft 30.

[0080] Please see Figure 4 In some embodiments, the connecting arm 1 protrudes from the surface of the cover 10, so that the cover 10 maintains a uniform thickness. This can effectively avoid the problem of uneven surface reflection (i.e., the visual difference between matte and glossy) caused by local thickness differences during injection molding, thereby improving the appearance quality of the printer 100.

[0081] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0082] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A printer, characterized in that, include: The cover body is provided with a plurality of connecting arms, the plurality of connecting arms being located on the same side of the cover body and arranged at intervals along a first direction, and each connecting arm being provided with a first mounting hole extending along the first direction; The host has multiple connection positions, and the multiple connection positions and multiple connection arms are arranged along the first direction. The multiple connection positions and multiple connection arms are configured in a one-to-one correspondence. Each connection position has a second mounting hole extending along the first direction. The multiple second mounting holes are respectively opposite to the positions of the multiple first mounting holes. Multiple rotating shafts are provided, the number of which matches the number of connecting arms. The distance between two adjacent connecting arms along the first direction is d, and the length of the rotating shaft along the first direction is h. d and h satisfy: d > h. Each rotating shaft passes through the first mounting hole and the second mounting hole, which are positioned opposite each other, between two adjacent connecting arms, so that the rotating shaft can be quickly and accurately aligned with the first mounting hole and the second mounting hole.

2. The printer according to claim 1, characterized in that, The shaft includes two ends and a middle portion located between the two ends. The middle portion passes through the first mounting hole and the second mounting hole, and one of the two ends extends out of the first mounting hole.

3. The printer according to claim 2, characterized in that, The distance between two adjacent connecting arms along the first direction is d, the length of the rotating shaft is h, and the length of the end extending from the first mounting hole is h1. d, h, and h1 satisfy: d > h + h1.

4. The printer according to claim 1, characterized in that, The centerlines of two adjacent rotating shafts are collinear.

5. The printer according to claim 1, characterized in that, The connecting arm includes a connecting post that defines the first mounting hole. The side wall of the connecting post is provided with an observation port that communicates with the first mounting hole.

6. The printer according to claim 5, characterized in that, When the cover is in the open position of the main unit, the top surface of the connecting column is provided with the observation port.

7. The printer according to claim 5, characterized in that, When the cover is in the open position of the main unit, the observation port is provided on the side of the connecting column.

8. The printer according to claim 1, characterized in that, The connecting arm includes a connecting post defining the first mounting hole, and one end of the connecting post has a through hole. The rotating shaft passes through the through hole into the first mounting hole, and the radial dimension of the through hole is greater than the radial dimension of the rotating shaft.

9. The printer according to claim 8, characterized in that, The radial dimension of the rotating shaft is r, and the radial dimension of the through hole is a. r and a satisfy: 2cm ≥ a ≥ 0.5cm.

10. The printer according to claim 8, characterized in that, The inner side of the first mounting hole is provided with at least one first protrusion, and the inner side of the insertion hole is provided with a second protrusion. Along the axial direction perpendicular to the rotating shaft, at least one first protrusion and the second protrusion are respectively located on opposite sides of the rotating shaft to restrict the movement of the rotating shaft along the axial direction perpendicular to the rotating shaft.

11. The printer according to claim 1, characterized in that, The printer also includes a cover plate, which is disposed on the connecting arm. The side of the cover plate facing the connecting arm has a third protrusion and a fourth protrusion, which are spaced apart. The end of the rotating shaft extending out of the first mounting hole is clamped between the third protrusion and the fourth protrusion.

12. The printer according to claim 11, characterized in that, The third protrusion has a first arc surface on the side facing the fourth protrusion, and the fourth protrusion has a second arc surface on the side facing the third protrusion. The end of the rotating shaft extending out of the first mounting hole is clamped between the first arc surface and the second arc surface.

13. The printer according to claim 11, characterized in that, The distance between the free end of the third protrusion away from the cover plate and the free end of the fourth protrusion away from the cover plate is b, and the radial dimension of the rotating shaft is r, where b and r satisfy: b > r.

14. The printer according to claim 11, characterized in that, The cover plate is also provided with a baffle on the side facing the connecting arm. The baffle and the rotating shaft are arranged along the first direction, and the baffle is used to restrict the rotating shaft from moving along its axial direction.

15. The printer according to claim 11, characterized in that, The cover plate is also provided with a hook on the side facing the connecting arm, and the hook engages with the connecting arm.

16. The printer according to claim 1, characterized in that, The connecting arm includes a connecting post defining the first mounting hole, and the connecting post has an insertion end. The rotating shaft passes through the insertion end into the first mounting hole, and the side wall of the insertion end has a notch that communicates with the first mounting hole.

17. The printer according to claim 1, characterized in that, The connecting arm protrudes from the surface of the cover.

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