Printer module and medical equipment

Abstract

The utility model provides a printer module and medical equipment, the printer module comprises: an upper cover, the bottom of which is opened to form an accommodating cavity, and the accommodating cavity is internally provided with a printing assembly and a paper bin for accommodating roll paper; one end of the base is mounted at the bottom of the upper cover through a connecting shaft, and the base can slide in the radial direction of the connecting shaft relative to the upper cover and rotate around the connecting shaft; the locking structure comprises a first limiting assembly and a second limiting assembly; when the second limiting assembly is located at the locking position, the second limiting assembly is matched with the first limiting assembly so that the base and the upper cover can be fixed to each other. When the second limiting assembly is located at the unlocking position, the second limiting assembly is separated from the first limiting assembly so that the base can move relative to the upper cover, the base can slide and rotate relative to the upper cover, and therefore the base can move to be separated from the upper cover, the paper bin is exposed, and roll paper can be installed in the paper bin or taken out of the paper bin. Therefore, the roll paper can be conveniently taken and placed in the printer module.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, and in particular to a printer module and medical equipment. Background Art

[0002] Medical equipment such as fetal monitors, electrocardiographs, defibrillators or ultrasonic diagnostic equipment generally have built-in printer modules to issue inspection reports. The printer module includes a base, an upper cover, a print head, a handle assembly and a roller. The base and the upper cover are enclosed to form a receiving cavity to accommodate the print head, the handle assembly and the roller. The printer module usually uses roll paper, and a paper bin dedicated to accommodating the roll paper is formed in the receiving cavity, and the paper bin is covered by the upper cover.

[0003] In the related art, in order to take and place the paper roll, the printer module is provided with a detachable connection between the upper cover and the base. For example, the upper cover and the base are connected by screws, so that tools are needed to take and place the paper roll; or the upper cover and the base are connected by a snap-on structure, which makes it difficult to disassemble the upper cover and the base, resulting in inconvenience in taking and placing the paper roll in the printer module used in medical equipment. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a printer module and a medical device, aiming to solve the problem of inconvenience in taking and placing roll paper of the printer module applied to the medical device in the related art.

[0005] In order to solve the above technical problems, the first aspect of the utility model provides a printer module, comprising:

[0006] An upper cover, with a bottom opening forming a receiving cavity, wherein a printing component and a paper bin for receiving roll paper are arranged in the receiving cavity;

[0007] A base, one end of which is mounted to the bottom of the upper cover via a connecting shaft and can slide relative to the upper cover along the radial direction of the connecting shaft and rotate around the connecting shaft; and

[0008] The locking structure comprises a first limiting assembly and a second limiting assembly, wherein the first limiting assembly is arranged on the upper cover or the printing assembly, and the second limiting assembly is arranged at an end of the base away from the connecting shaft and can move between a locking position and an unlocking position;

[0009] Wherein, the second limiting component is at least partially exposed on a side surface of the base facing away from the upper cover, and when the second limiting component is located at the locking position, it cooperates with the first limiting component to fix the base and the upper cover to each other; when the second limiting component is located at the unlocking position, it disengages from the first limiting component to allow the base to move relative to the upper cover.

[0010] Optionally, the first limiting assembly includes a first limiting part provided on the printing assembly, and the first limiting part is provided with a limiting structure;

[0011] The second limiting assembly includes a handle assembly rotatably connected to the base, a restoring member, and a second limiting member disposed on the handle assembly, wherein the restoring member is used to provide a restoring force to drive the handle assembly to rotate to the locking position;

[0012] Wherein, when the handle assembly is located at the locking position, the second limiting member is fixed to the first limiting member via the limiting structure; when the handle assembly is located at the unlocking position, the second limiting member is disengaged from the limiting structure.

[0013] Optionally, the first limiting member is rotatably connected to the printing assembly, and the limiting structure includes a limiting groove provided on the first limiting member;

[0014] When the handle assembly is located at the locking position, the second limiting member extends into the limiting groove, and the first limiting member can prevent the second limiting member from disengaging from the limiting groove along the sliding direction of the base; when the handle assembly is located at the unlocking position, the second limiting member disengages from the limiting groove.

[0015] Optionally, the base is provided with a clearance cavity, and the handle assembly comprises:

[0016] A first rotating shaft is rotatably mounted on a side of the base close to the upper cover, the second limiting member is fixed to the first rotating shaft, and the return member is respectively connected to the first rotating shaft and the base; and

[0017] A handle has one end fixed to the first rotating shaft and the other end passing through the clearance cavity.

[0018] Optionally, the base is provided with a guide groove, and the guiding direction of the guide groove is parallel to the sliding direction of the base; one end of the connecting shaft is fixed to the side wall of the accommodating cavity, and the other end passes through the guide groove.

[0019] Optionally, the printer module is provided with a paper outlet, and the printer module also includes a traction assembly arranged on the base, the traction assembly is used to pull the roll paper stored in the paper bin to the paper outlet, and the roll paper passes between the printing assembly and the base and is wound around the bottom of the printing assembly.

[0020] Optionally, the traction assembly includes a connecting seat and a roller, the connecting seat is fixed to the base, the roller is rotatably assembled on the base, and the roller is arranged between the paper outlet and the printing assembly.

[0021] Optionally, the base is provided with a first groove, in which a plurality of first ribs are spaced apart; the upper cover is provided with a second groove, in which a plurality of second ribs are spaced apart; wherein the first groove and the second groove together form the paper outlet.

[0022] Optionally, the printing component includes:

[0023] A fixing seat, fixed in the accommodating cavity, wherein the fixing seat and the upper cover define the paper bin;

[0024] A print head is fixed to the fixing seat and is located in the accommodating cavity; and

[0025] The circuit board is fixed to the fixing seat and is electrically connected to the printing head.

[0026] A second aspect of the present invention provides a medical device, comprising the printer module as described above.

[0027] Compared with the related art, the printer module and medical equipment in the utility model have the following beneficial effects: when the second limit assembly is in the locking position, it cooperates with the first limit assembly to fix the base and the upper cover to each other, and the base can neither slide nor rotate at this time, so as to ensure that the printer module can be used normally; when the second limit assembly is in the unlocking position, it is separated from the first limit assembly so that the base can move relative to the upper cover, so that the base can slide and rotate relative to the upper cover, so that the base can move to separate from the upper cover, the paper bin is exposed, and the roll paper can be installed in the paper bin or taken out from the paper bin. Compared with the prior art, the paper roll does not require special tools to be taken and placed, and the locking of the base and the upper cover only requires the second limit assembly to be moved to the locking position or the unlocking position, and the unlocking and locking method is simple, so it is convenient to take and place the paper roll in the printer module. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the overall structure of the printer module provided by the embodiment of the utility model;

[0030] Figure 2 is an exploded view of a printer module provided by an embodiment of the utility model;

[0031] Figure 3It is a schematic diagram of the assembly between the base, the second limiting component and the pulling component in the printer module provided by the embodiment of the utility model;

[0032] Figure 4 It is a schematic diagram of the assembly between the upper cover, the printing assembly and the paper roll in the printer module provided by the embodiment of the utility model;

[0033] Figure 5 It is a schematic diagram of the state of the handle assembly in the printer module provided by the embodiment of the utility model switching between the locked position and the unlocked position;

[0034] Figure 6 It is a schematic diagram of the state in which the base in the printer module provided by the embodiment of the utility model moves relative to the upper cover.

[0035] In the accompanying drawings, the various reference numerals represent: 1. upper cover; 11. accommodating chamber; 2. base; 21. guide groove; 3. printing assembly; 31. fixing seat; 32. print head; 33. circuit board; 4. connecting shaft; 5. first limiting assembly; 51. first limiting member; 511. limiting groove; 6. second limiting assembly; 61. handle assembly; 611. first rotating shaft; 612. handle; 62. return member; 63. second limiting member; 7. paper outlet; 8. traction assembly; 81. connecting seat; 82. roller; 9. first rib plate; 10. second rib plate; 20. fixing plate; 30. window; 40. waterproof member; 50. paper roll. DETAILED DESCRIPTION

[0036] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" and "several" is two or more, unless otherwise clearly and specifically defined.

[0039] Example:

[0040] The embodiment of the utility model provides a medical device, including a device body and a printer module, wherein the printer module is installed on the device body and is used to print a test report of the medical device, wherein the medical device may be a fetal monitor, an electrocardiograph, a defibrillator, an ultrasonic diagnostic device, and the like.

[0041] See also Figure 1 , Figure 2 and Figure 6 The printer module includes an upper cover 1, a base 2, a printing assembly 3 and a locking structure. The bottom opening of the upper cover 1 forms a receiving cavity 11, in which the printing assembly 3 and a paper bin for receiving the roll paper 50 are arranged; one end of the base 2 is mounted to the bottom of the upper cover 1 through a connecting shaft 4, and can slide along the radial direction of the connecting shaft 4 relative to the upper cover 1 and rotate around the connecting shaft 4; the locking structure includes a first limiting assembly 5 and a second limiting assembly 6, the first limiting assembly 5 is arranged on the upper cover 1 or the printing assembly 3, and the second limiting assembly 6 is arranged at one end of the base 2 away from the connecting shaft 4, and can move between a locked position and an unlocked position; wherein, the second limiting assembly 6 is at least partially exposed on the side surface of the base 2 away from the upper cover 1.

[0042] When the second limit assembly 6 is in the locking position, it cooperates with the first limit assembly 5 to fix the base 2 and the upper cover 1 to each other. At this time, the base 2 can neither slide nor rotate, ensuring that the printer module can be used normally; when the second limit assembly 6 is in the unlocking position, it is separated from the first limit assembly 5 so that the base 2 can move relative to the upper cover 1, so that the base 2 can slide and rotate relative to the upper cover 1, so that the base 2 can move to separate from the upper cover 1, the paper bin is exposed, and the paper roll 50 can be installed in the paper bin or taken out from the paper bin. Compared with the prior art, the paper roll 50 does not require special tools to be taken and placed, and the locking of the base 2 and the upper cover 1 only requires the second limit assembly 6 to be moved to the locking position or the unlocking position. The unlocking and locking methods are simple, so it is convenient to take and place the paper roll 50 in the printer module.

[0043] It should be noted that in this solution, when the second limit assembly 6 moves to the unlocked position, the base 2 needs to slide a certain distance relative to the upper cover 1 before it can rotate, and the base 2 rotates downward relative to the upper cover 1. In actual application scenarios, the gap between the upper cover 1 and the top of the device body is generally small, and the downward sliding of the base 2 relative to the upper cover 1 can avoid taking and placing the roll paper 50 through the movable upper cover 1, thereby improving the adaptability range of the printer module.

[0044] See also Figure 2 , Figure 3 and Figure 5 , further, the first limiting component 5 includes a first limiting member 51 provided on the printing component 3, and the first limiting member 51 is provided with a limiting structure; the second limiting component 6 includes a handle component 61 rotatably connected to the base 2, a return member 62 and a second limiting member 63 provided on the handle component 61, and the return member 62 is used to provide a restoring force for driving the handle component 61 to rotate to the locking position. Among them, when the handle component 61 is in the locking position, the second limiting member 63 is fixed to the first limiting member 51 through the limiting structure, and the second limiting member 63 is provided on the base 2, and the first limiting member 51 is provided on the upper cover 1, so that the base 2 and the upper cover 1 are fixed to each other, and the base 2 cannot slide and rotate relative to the upper cover 1. When the handle component 61 is in the unlocking position, the second limiting member 63 is separated from the limiting structure, so that the base 2 and the upper cover 1 are connected only through the connecting shaft 4, and the base 2 can slide and rotate relative to the upper cover 1.

[0045] Specifically, the handle assembly 61 is partially exposed on the outside of the base 2. When the handle assembly 61 is in a natural state (not under force), the handle assembly 61 is in a locked position driven by the restoring force. At this time, the second limit member 63 is fixed to the first limit member 51 through the limiting structure; when the handle assembly 61 is rotated to the unlocked position, the restoring member 62 is compressed. At this time, the second limit member 63 follows the rotation and disengages from the limiting structure. The second limit member 63 is separated from the first limit member 51, and the base 2 can slide and rotate relative to the upper cover 1.

[0046] See also Figure 2 , Figure 3 and Figure 5In one embodiment, the first limiting member 51 is rotatably connected to the printing assembly 3, and the limiting structure includes a limiting groove 511 provided on the first limiting member 51; when the handle assembly 61 is in the locking position, the second limiting member 63 extends into the limiting groove 511, and the first limiting member 51 can prevent the second limiting member 63 from disengaging from the limiting groove 511 along the sliding direction of the base 2; when the handle assembly 61 is in the unlocking position, the second limiting member 63 disengages from the limiting groove 511. Specifically, the first limiting member 51 is located at one end of the printing assembly 3, and the first limiting member 51 can be a V-shaped block, one end of the V-shaped block is rotatably connected to the printing assembly 3, and the bottom of the V-shaped block is provided with a limiting groove 511, and the opening of the V-shaped block is horizontally distributed in a natural state. The second limiting member 63 can be a V-shaped block, one end of the V-shaped block is fixed to the handle assembly 61, and the other end is adapted to the limiting groove 511.

[0047] During the assembly process of the base 2 and the upper cover 1, the base 2 is first connected to the upper cover 1 through the connecting shaft 4, and then the base 2 is rotated toward the bottom cover until it is in fit with the upper cover 1, and then the base 2 slides to the left; and during the sliding process of the base 2, since the handle assembly 61 is in the locked position, the second limit member 63 will contact the first limit member 51, and the second limit member 63 will push against the first limit member 51 and rotate clockwise until the second limit member 63 extends into the limit groove 511 of the first limit member 51, at this time, the first limit member 51 will prevent the second limit member 63 from sliding along the base 2, thereby preventing the base 2 from sliding, and further fixing the base 2 and the upper cover 1 to each other. When the base 2 needs to slide to the right, the handle assembly 61 is turned to the unlocked position, and the second limit member 63 rotates with the handle assembly 61. At this time, the height of the second limit member 63 relative to the base 2 gradually decreases and can be disengaged from the limit groove 511, thereby separating the first limit member 51 and the second limit member 63, and the base 2 can slide to the right.

[0048] In another embodiment, the first limiting member 51 is fixed on the printing component 3, and the limiting structure on the first limiting member 51 can be a card slot, and a buckle is set on the second limiting member 63. When the handle assembly 61 is in the locking position, the second limiting member 63 and the first limiting member 51 are connected by the buckle and the card slot to fix the base 2 and the upper cover 1 to each other; when the handle assembly 61 is in the unlocking position, the buckle of the second limiting member 63 is disengaged from the card slot of the first limiting member 51, so that the base 2 can move relative to the upper cover 1.

[0049] See also Figure 2 , Figure 3 and Figure 5In some embodiments, the base 2 is provided with a clearance cavity, and the handle assembly 61 includes a first rotating shaft 611 and a handle 612. The first rotating shaft 611 is rotatably assembled on the side of the base 2 close to the upper cover 1, the second limiter 63 is fixed to the first rotating shaft 611, and the return member 62 is respectively connected to the first rotating shaft 611 and the base 2; one end of the handle 612 is fixed to the first rotating shaft 611 and the other end passes through the clearance cavity. Specifically, the two ends of the first rotating shaft 611 are respectively rotatably connected to the two sides of the base 2, so that the first rotating shaft 611 can rotate relative to the base 2. The return member 62 is provided on the side of the first rotating shaft 611 close to the connecting shaft 4, and the return member 62 can be a torsion spring or a spring sheet. The two ends of the return member 62 are respectively connected to the first rotating shaft 611 and the base 2, so that the return member 62 can drive the first rotating shaft 611 to rotate to the locking position. According to actual needs, multiple return members 62 can be provided, such as two or three.

[0050] In a specific example, when the handle assembly 61 is in a natural state, the handle 612 and the plane where the base 2 is located have an angle. Figure 5 As shown, when the handle 612 is rotated clockwise by a certain angle (such as α°), the handle 612 is located in the unlocking position and the first rotating shaft 611 rotates accordingly to drive the second limiting member 63 to be located in the unlocking position; when the handle 612 is not subjected to force, the first rotating shaft 611 rotates counterclockwise under the action of the restoring force until the handle 612 is located in the locking position, and the second limiting member 63 is also in the locking position driven by the first rotating shaft 611.

[0051] See also Figure 2 and Figure 6 In some embodiments, the base 2 is provided with a guide groove 21, and the guide direction of the guide groove 21 is parallel to the sliding direction of the base 2; one end of the connecting shaft 4 is fixed to the side wall of the accommodating cavity 11, and the other end passes through the guide groove 21. Specifically, the two side walls of the base 2 are between the two side walls of the upper cover 1, and the two side walls of the base 2 are provided with guide grooves 21. There are two connecting shafts 4, and the two connecting shafts 4 are respectively fixed on the two side walls of the upper cover 1, and the two connecting shafts 4 extend into the two guide grooves 21 one by one to achieve the connection between the base 2 and the upper cover 1. Figure 6 As shown, when the base 2 slides to the right, the connecting shaft 4 moves toward the right end of the guide groove 21. When the base 2 slides a certain distance (such as distance L), the connecting shaft 4 is located at the right end of the guide groove 21, and the base 2 can rotate around the rotating shaft. According to actual needs, the guide groove 21 is a through groove, and the left and right ends of the guide groove 21 are semicircular; the printer module also includes a fixing plate 20, and the connecting shaft 4 can be first fixed on the fixing plate 20, and then the fixing plate 20 is fixed to the upper cover 1. The fixing plate 20 can be fixed to the upper cover 1 by screws, which is conducive to fixing the connecting shaft 4 to the upper cover 1.

[0052] See also Figure 1 , Figure 2 and Figure 4 In some embodiments, the printer module is provided with a paper outlet 7, and the printer module further includes a traction assembly 8 disposed on the base 2, the traction assembly 8 is used to pull the roll paper 50 stored in the paper bin to the paper outlet 7, and the roll paper 50 passes between the printing assembly 3 and the base 2 and is wound around the bottom of the printing assembly 3. Since the printing assembly 3 is fixed to the upper cover 1, the printing assembly 3 can press the roll paper 50 on the base 2, making the roll paper 50 more flat, so that there is no need to set up a pressing mechanism in the printer module, which can reduce the volume of the printer module, facilitate the miniaturization of the printer module, and facilitate the installation of the printer module on the device body.

[0053] See also Figure 2 and Figure 4 Furthermore, the traction assembly 8 includes a connecting seat 81 and a roller 82. The connecting seat 81 is fixed to the base 2, and the connecting seat 81 is located between the printing assembly 3 and the paper outlet 7; the roller 82 is rotatably assembled on the base 2, and the roller 82 is arranged between the paper outlet 7 and the printing assembly 3. The roller 82 can pull the roll paper 50 so that the roll paper 50 reaches the paper outlet 7.

[0054] See also Figure 2 , Figure 3 and Figure 4 In one embodiment, the base 2 is provided with a first groove, and a plurality of first ribs 9 are provided in the first groove at intervals; the upper cover 1 is provided with a second groove, and a plurality of second ribs 10 are provided in the second groove at intervals. The first groove and the second groove together form the paper outlet 7, that is, the paper outlet 7 is not directly provided on the upper cover 1, which can reduce the height of the paper outlet 7, thereby reducing the height of the printer module, which is beneficial to reducing the volume of the printer module; the first rib 9 is provided in the first groove and the second rib 10 is provided in the second groove, which can increase the area of ​​the roll paper 50 exposed to the air, which is beneficial to heat dissipation of the roll paper 50.

[0055] See also Figure 2 and Figure 4 The printing assembly 3 includes a fixed seat 31, a print head 32 and a circuit board 33. The fixed seat 31 is fixed in the accommodating cavity 11. The fixed seat 31 and the upper cover 1 define a paper bin, and a second rotating shaft is arranged in the paper bin to install the roll paper 50. Since the paper bin is located in the upper cover 1, the space in the accommodating cavity 11 can be reasonably utilized to reduce the volume of the upper cover 1, thereby reducing the volume of the printer module. The print head 32 is fixed to the fixed seat 31 and is located in the accommodating cavity 11. A third rotating shaft is arranged in the print head 32. The first limiter 51 is fixed to the third rotating shaft so that it can rotate relative to the print head 32. The print head 32 is used to print content on the roll paper 50. The circuit board 33 is fixed to the fixed seat 31 and is electrically connected to the print head 32. The circuit board 33 is used to control the operation of the print head 32.

[0056] See also Figure 1 and Figure 2 In some embodiments, the upper cover 1 is further provided with a window 30, and the interface module of the circuit board 33 is exposed through the window 30. The printer module further includes a waterproof member 40, which is mounted on the upper cover 1 and arranged around the window 30. The waterproof member 40 is arranged in the accommodating cavity 11. The waterproof member 40 may be a waterproof gasket for preventing water from entering the printer module.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A printer module, characterized in that: include: An upper cover, with a bottom opening forming a receiving cavity, wherein a printing component and a paper bin for receiving roll paper are arranged in the receiving cavity; A base, one end of which is mounted to the bottom of the upper cover via a connecting shaft, and can slide relative to the upper cover along the radial direction of the connecting shaft and rotate around the connecting shaft; as well as, The locking structure comprises a first limiting assembly and a second limiting assembly, wherein the first limiting assembly is arranged on the upper cover or the printing assembly, and the second limiting assembly is arranged at an end of the base away from the connecting shaft and can move between a locking position and an unlocking position; Wherein, the second limiting component is at least partially exposed on a side surface of the base facing away from the upper cover, and when the second limiting component is located at the locking position, it cooperates with the first limiting component to fix the base and the upper cover to each other; when the second limiting component is located at the unlocking position, it disengages from the first limiting component to allow the base to move relative to the upper cover.

2. The printer module according to claim 1, characterized in that: The first limiting assembly comprises a first limiting part arranged on the printing assembly, and the first limiting part is provided with a limiting structure; The second limiting assembly includes a handle assembly rotatably connected to the base, a restoring member, and a second limiting member disposed on the handle assembly, wherein the restoring member is used to provide a restoring force to drive the handle assembly to rotate to the locking position; Wherein, when the handle assembly is located at the locking position, the second limiting member is fixed to the first limiting member via the limiting structure; when the handle assembly is located at the unlocking position, the second limiting member is disengaged from the limiting structure.

3. The printer module according to claim 2, characterized in that: The first limiting member is rotatably connected to the printing assembly, and the limiting structure includes a limiting groove provided on the first limiting member; When the handle assembly is located at the locking position, the second limiting member extends into the limiting groove, and the first limiting member can prevent the second limiting member from disengaging from the limiting groove along the sliding direction of the base; when the handle assembly is located at the unlocking position, the second limiting member disengages from the limiting groove.

4. The printer module according to claim 2, characterized in that: The base is provided with a clearance cavity, and the handle assembly comprises: A first rotating shaft is rotatably mounted on a side of the base close to the upper cover, the second limiting member is fixed to the first rotating shaft, and the return member is respectively connected to the first rotating shaft and the base; and A handle has one end fixed to the first rotating shaft and the other end passing through the clearance cavity.

5. The printer module according to claim 1, characterized in that: The base is provided with a guide groove, the guiding direction of which is parallel to the sliding direction of the base; one end of the connecting shaft is fixed to the side wall of the accommodating cavity, and the other end passes through the guide groove.

6. The printer module according to claim 1, characterized in that: The printer module is provided with a paper outlet, and the printer module also includes a traction component arranged on the base, the traction component is used to pull the roll paper stored in the paper bin to the paper outlet, and the roll paper passes between the printing component and the base and is wound around the bottom of the printing component.

7. The printer module according to claim 6, characterized in that: The traction assembly comprises a connecting seat and a roller, wherein the connecting seat is fixed to the base, the roller is rotatably assembled on the base, and the roller is arranged between the paper outlet and the printing assembly.

8. The printer module according to claim 6, characterized in that: The base is provided with a first groove, in which a plurality of first ribs are arranged at intervals; the upper cover is provided with a second groove, in which a plurality of second ribs are arranged at intervals; wherein the first groove and the second groove together form the paper outlet.

9. The printer module according to claim 1, characterized in that: The printing assembly comprises: A fixing seat, fixed in the accommodating cavity, wherein the fixing seat and the upper cover define the paper bin; A print head is fixed to the fixing seat and is located in the accommodating cavity; and The circuit board is fixed to the fixing seat and is electrically connected to the printing head.

10. A medical device, characterized in that: Comprising a printer module as described in any one of claims 1-9.

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