Printer and monitor

Abstract

The utility model provides a printer and a monitor, the printer comprises a main housing, a printing head assembly arranged in the main housing, a printing paper cabin arranged in the main housing, and a printing paper cabin door assembly pivotally mounted on the main housing, and the printer is characterized in that the printing head assembly is provided with a printing head, a printing paper cabin door and a printing paper cabin door; the printing paper cabin door assembly comprises a door frame, a panel and a rubber compression roller, wherein one end of the door frame is pivotally mounted on the main shell; the panel is pivotally mounted on the front side of the door frame; the rubber compression roller is movably mounted on the rear side of the door frame at the other end of the door frame; the rubber compression roller can be clamped into the arc-shaped clamping groove in the printing head assembly in a removable mode. The printer is simple in structure, easy to manufacture and attractive in overall appearance, and cleaning and disinfection of the printer are facilitated. In addition, the unlocking area is basically not limited, and operation of different users is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a printer and a monitor comprising the printer. BACKGROUND

[0002] The monitor can be used for collecting, analyzing, storing, displaying and printing a plurality of physiological parameters of a patient. The monitor outputs and prints information representing the physiological parameters of the patient by means of a printer. When the printer is working, a rubber pressure roller driven by a stepping motor rotates at a preset speed to drag the printing paper through a thermal print head, so as to record the information representing the physiological parameters of the patient on the thermal printing paper. When new printing paper needs to be added, the printing paper hatch needs to be unlocked first to make the printing paper hatch open. In the existing printers, some are provided with a button on the printing paper hatch, and the printing paper hatch is unlocked by pressing the button; some are provided with a notch on the printing paper hatch and a flap structure in the notch, and the unlocking is realized by pulling up the small flap from the bottom of the space. Whether the printing paper hatch is unlocked by pressing the button or by pulling up the small flap, a slot or a hole needs to be formed on the printing paper hatch, which not only destroys the original industrial design of the printing paper hatch and makes the manufacturing process complicated, but also is not conducive to the cleaning and disinfection of the printer. In addition, the unlocking mechanism is complex in structure, the unlocking area is small, and the user operation is not convenient.

[0003] Therefore, it is necessary to improve the printer in the prior art. SUMMARY

[0004] The utility model aims at overcoming the defects in the prior art, and provides a printer and a monitor comprising the printer, which can overcome at least one of the defects in the prior art.

[0005] According to an aspect of the utility model, a printer is provided, which comprises:

[0006] a main housing;

[0007] a print head assembly arranged in the main housing;

[0008] a printing paper hatch arranged in the main housing; and

[0009] a printing paper hatch door assembly pivotably mounted to the main housing;

[0010] characterized in that the printing paper hatch door assembly comprises:

[0011] a door frame pivotably mounted to the main housing at one end;

[0012] a panel pivotably mounted to the front side of the door frame; and

[0013] A rubber pressure roller is movably mounted to the rear side of the door frame at the other end of the door frame, and the rubber pressure roller can be movably clamped into a clamping groove on the print head assembly.

[0014] Preferably, a pivot axis around which the panel rotates is closer to the other end of the door frame than to the one end of the door frame.

[0015] Preferably, the door frame has a gradually decreasing thickness from the position where the pivot axis is located towards the other end of the door frame, so as to define a rotation space between the door frame and the panel that allows the panel to pivot.

[0016] Preferably, two mounting protrusions are provided spaced apart at the rear side of the other end of the door frame, and a U-shaped groove is formed on each of the mounting protrusions, the U-shaped groove gradually increases in width from an opening towards a bottom, so that the support shaft of the rubber pressure roller has a freedom of movement in the U-shaped groove but cannot be disengaged from the U-shaped groove when the support shaft is received in the U-shaped groove.

[0017] Preferably, a cantilever is formed on one of the door frame and the panel, and a recess is formed on the other of the door frame and the panel, and when the panel is pivotably mounted to the door frame, the cantilever is inserted into the recess and abuts against a side wall of the recess.

[0018] Preferably, mounting shafts are respectively provided at both sides of the one end of the door frame, and the door frame is pivotably mounted to the main housing through the mounting shafts.

[0019] Preferably, a gripping protrusion is provided on the inner side of the panel close to the one end of the door frame.

[0020] Preferably, reinforcing ribs are respectively formed on the front side of the door frame and the rear side of the panel.

[0021] Preferably, the print paper cabin is further connected to the rear side of the door frame.

[0022] Preferably, the printer further comprises a driving mechanism arranged in the main housing and configured to drive the rubber pressure roller to rotate.

[0023] Preferably, the clamping groove is arc-shaped.

[0024] According to another aspect of the present application, a monitor is provided, and the monitor comprises the printer as described above.

[0025] Preferably, the monitor includes a monitor body with a receiving cavity, and the printer is removably placed in the receiving cavity and electrically connected to the monitor body.

[0026] The printer according to this invention eliminates the need for a separate unlocking mechanism on the paper tray door assembly. The panel can be a single piece with a smooth outer surface, resulting in a simple structure, ease of manufacturing, an aesthetically pleasing overall appearance, and improved ease of cleaning and disinfection. Furthermore, unlocking is performed from the bottom of the panel, with virtually no restrictions on the unlocking area, facilitating operation by various users. In addition to the aforementioned advantages of the printer, the monitor according to this invention also boasts a very compact and simple overall structure. Attached Figure Description

[0027] Figure 1 A three-dimensional view schematically shows the printer according to the present invention;

[0028] Figure 2 Another perspective view schematically shows the printer according to the present invention;

[0029] Figure 3 The paper tray door assembly of the printer according to the present invention is shown schematically in a perspective view;

[0030] Figure 4 yes Figure 3 An exploded perspective view of the printed paper compartment door assembly shown.

[0031] Figure 5 It's viewed from the other side. Figure 3 An exploded perspective view of the printed paper compartment door assembly shown.

[0032] Figure 6 yes Figure 3 The side view of the printed paper compartment door assembly shown;

[0033] Figure 7 yes Figure 3 Another side view of the printed paper compartment door assembly shown;

[0034] Figure 8 It is along Figure 6 A cross-sectional view of line AA in the diagram;

[0035] Figure 9 This is a side view of the printer according to the present invention, wherein the paper tray door assembly is shown in the locked position in a partially enlarged sectional view;

[0036] Figure 10 This is a side view of the printer according to the present invention, wherein the paper tray door assembly is shown in the just-unlocked position in a partially enlarged sectional view;

[0037] Figure 11 is a side view of the printer according to the present application, wherein the printing paper hatch assembly is in an open position;

[0038] Figure 12 is a perspective view schematically showing a monitor including the printer according to the present application, wherein the printer is in a state of being taken out from a monitor body; and

[0039] Figure 13 is a perspective view schematically showing a monitor including the printer according to the present application, wherein the printer is in a state of being installed in the monitor body. DETAILED DESCRIPTION

[0040] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings, but it should be understood that the drawings are merely intended to illustrate the present application and do not constitute a limitation thereof.

[0041] Figure 1 is a perspective view schematically showing a printer according to the present application, and Figure 2 is another perspective view schematically showing the printer according to the present application. As shown in Figure 1 and 2 , the printer 1 according to the present application generally comprises a main housing 3, a print head assembly 5 (shown in Figure 9 and 10 ) disposed in the main housing 3, a printing paper hatch 7 (shown in Figure 11 ) disposed in the main housing 3, a printing paper hatch assembly 9 disposed at the front side of the printing paper hatch (in the present application, the side of the printing paper hatch facing the outside is defined as the front side), and a driving mechanism (not shown) such as a stepping motor disposed in the main housing 3 and used to drive the rubber pressure roller on the printing paper hatch assembly 9 to rotate. When the printer is working, the rubber pressure roller driven by the driving mechanism rotates at a preset speed to drag the printing paper from the printing paper hatch to pass through the thermal print head, so as to record information representing the physiological parameters of the patient on the thermal printing paper. When new printing paper needs to be added after the printing paper is used up, the printing paper hatch door needs to be unlocked to open the printing paper hatch. Since the present application mainly relates to the improvement of the printing paper hatch assembly, the detailed description of other parts of the printer is omitted.

[0042] Figure 3 is a perspective view schematically showing a printing paper hatch assembly of the printer according to the present application, Figure 4 is an exploded perspective view of the printing paper hatch assembly shown in Figure 3 , is an exploded perspective view of the printing paper hatch assembly shown in Figure 5 from another side, Figure 3 , is an exploded perspective view of the printing paper hatch assembly shown in Figure 6yes Figure 3 The side view of the printed paper compartment door assembly shown is shown. Figure 7 yes Figure 3 The other side view of the printed paper compartment door assembly shown, and Figure 8 It is along Figure 6 A cross-sectional view of line AA in the diagram. (Example) Figures 4-8 As shown, the printer paper compartment door assembly 9 according to this utility model includes a door frame 11, which is preferably rectangular in shape. At one end of the door frame 11 ( Figure 4 and 5 Mounting shafts 13 are respectively provided on both sides of the lower end of the door frame 11. In a preferred embodiment, the mounting shafts 13 are integrally formed with the door frame 11, but it should be understood that the mounting shafts 13 can be formed separately from the door frame 11 and subsequently installed on the door frame 11. A first mounting hole 17 for the pivot shaft 15 to pass through is also provided on the door frame 11, such that the extension direction of the pivot shaft 15 is substantially parallel to the axial direction of the mounting shaft 13. At the other end of the door frame 11 ( Figure 4 and 5 Two mounting protrusions 19 are spaced apart on the rear side of the upper end of the rubber pressure roller 23. Each mounting protrusion has an upward-opening U-shaped groove 21, the width of which gradually increases from the opening to the bottom. The material, shape, and size of the U-shaped groove 21 are chosen such that the support shaft 25 of the rubber pressure roller 23 can be received within the U-shaped groove 21 and has the freedom to move vertically within the U-shaped groove 21 without dislodging from it. The rubber pressure roller 23 includes a rubber layer 27 disposed in the middle of the support shaft 25, mounting portions 29 located at both ends of the support shaft 25 for mounting into slots on the printhead assembly, and gears 31 located on the support shaft 25. When the rubber pressure roller 23 is mounted into the slots on the printhead assembly, the drive mechanism drives the rubber pressure roller 23 to rotate via the gears 31. A connecting hole 26 is also formed on the rear side of the door frame 11 for receiving the printing paper tray 7 (e.g., ...). Figure 11 (As shown) is connected to the door frame.

[0043] The printer paper compartment door assembly 9 according to this utility model further includes a panel 33, which preferably has a rectangular shape corresponding to the door frame 11. The front side of the panel 33 is formed as a generally smooth surface, and a second mounting hole 35 is formed on the rear side of the panel 33. A pivot shaft 15 passes through the second mounting hole 35 on the panel 33 and a first mounting hole 17 on the door frame 11 to pivotally mount the panel 33 to the front side of the door frame. To provide space allowing the panel 33 to pivot relative to the door frame 11 after it is pivotally mounted to the door frame 11, the door frame 11 is positioned from the pivot shaft 11 towards the other end (i.e., Figure 4 and 5The upper end of the door frame 11 has a gradually decreasing thickness so as to define a rotating space S between the door frame 11 and the panel 33. In order to prevent the panel 33 from moving relative to the door frame, increase the rebound effect of the panel and improve the operation feeling when unlocking the print paper cabin door assembly, a cantilever 37 can be provided on the door frame 11, which can be inserted into a cavity C formed on the panel 33 and abut against the cavity towards the side wall of the door frame. In the preferred embodiment, the cantilever 37 extends from the lower end to the upper end of the door frame 11 at the middle position of the door frame 11, and the cavity C is formed at the middle position of the rear side of the panel and opens downward. It should be understood that the skilled in the art can change the number, shape and orientation of the cantilever 37 and the cavity C as needed. For example, the cantilever can be provided on the rear side of the panel and extend downward, and the cavity can be provided on the front side of the door frame and open upward. In order to increase the rigidity of the door frame 11 and the panel 33, a reinforcing rib 11a can be formed on the front side of the door frame 11 and a reinforcing rib 33a can be formed on the rear side of the panel 33. In order to facilitate the operator to grasp the panel 33 when unlocking, a grasping protrusion 39 can be provided on the inner side of the lower end of the panel 33. Preferably, the door frame 11 and the panel 33 are integrally injection molded by plastic material.

[0044] After the panel 33 is pivotally mounted to the door frame 11 by the pivot shaft 15 passing through the second mounting hole 35 on the panel 33 and the first mounting hole 17 of the door frame 11, and the support shaft 25 exposed at both ends of the rubber pressure roller 23 is clamped into the U-shaped groove 21 on the two mounting protrusions 19 on the rear upper end of the door frame 11, the print paper cabin door assembly 9 as shown in Figures 6-8 is formed. The print paper cabin door assembly 9 can be rotatably mounted to the main housing 3 through the mounting shaft 13 on both sides of the lower end, and the print paper cabin 7 can be connected to the rear side of the door frame 11 through the connecting hole 26 on the door frame 11. In this way, the assembly between the print paper cabin door assembly 9 and the main housing 3 of the printer is completed.

[0045] The operation of the print paper cabin door assembly 9 of the printer according to the present application will be described below in conjunction with Figures 9-10 .

[0046] Figure 9 is a side view of the printer according to the present application, wherein the print paper cabin door assembly is shown in a locked position in a partially enlarged sectional view. After the assembly between the print paper cabin door assembly 9 and the main housing 3 of the printer is completed, the assembly part 29 of the rubber pressure roller 23 mounted on the door frame 11 is rotated clockwise around the axis of the mounting shaft 13, and the assembly part 29 of the rubber pressure roller 23 is inserted into the cavity C on the panel 33 and abuts against the cavity towards the side wall of the door frame 11. In this way, the print paper cabin door assembly 9 is locked. Figure 9The paper tray assembly 9 is closed and locked by being inserted into a slot 41 on the printhead assembly 5 located in the main housing 3. The slot 41 can be of any suitable shape as long as it can hold the mounting portion 29 of the rubber pressure roller 23 on the printhead assembly 5. To facilitate the rotation of the rubber pressure roller and reduce wear, the slot 41 is preferably arc-shaped.

[0047] Figure 10 This is a side view of the printer according to the present invention, wherein a partially enlarged sectional view shows the paper tray door assembly in the just-unlocked position, and Figure 11 This is a side view of the printer according to the present invention, wherein the paper tray door assembly is in the open position. When it is necessary to open the paper tray door assembly 9 to add printing paper, the operator grips the gripping protrusion 39 on the inner side of the lower end of the panel 33 and applies force outward, causing the panel 33 to rotate clockwise relative to the door frame 11 around the pivot axis 15. The portion of the panel 33 above the pivot axis 15 is in close contact with the door frame 11 and applies force to the print head assembly 5 through the rubber pressure roller 23. Since the rubber pressure roller 23 has the freedom to move in the vertical direction of the U-shaped groove 21 without dislodging from the U-shaped groove 21, under the reaction force of the print head assembly 5, the rubber pressure roller 23 is squeezed and moves upward in the U-shaped groove 21, thereby... Figure 10 As shown, it disengages from the slot 41 on the printhead assembly 5, thereby unlocking the print paper tray door assembly 9. Then, under the influence of gravity, the entire print paper tray door assembly 9 rotates counterclockwise around the axis of the mounting shaft 13, and as shown... Figure 10 The paper tray 7 is rotated to the fully open position to allow paper to be added. To utilize leverage and reduce the force required to unlock the paper tray door assembly 9, the axis of rotation of panel 33 relative to door frame 11 (i.e., the location of pivot axis 15) is closer to the upper end of the panel than the lower end of the panel.

[0048] Figure 12 A three-dimensional view schematically shows a monitor including a printer according to the present invention, wherein the printer is in a state of being removed from the monitor body; Figure 13 A perspective view schematically shows a monitor including a printer according to the present invention, wherein the printer is installed within the main body of the monitor. Figure 12 and 13 As shown, the monitor body 43 is provided with a receiving cavity 45, and the printer 1 according to this utility model can be removably placed in the receiving cavity 45 on the monitor body 43. Typically, the receiving cavity 45 is provided with an electrical connection part such as a spring pin (not shown), and the printer 1 is provided with a corresponding electrical connection part such as a metal contact. When the printer 1... Figure 13When the printer 1 is shown inserted into the accommodation cavity 45 and held in place, the spring-loaded pins inside the accommodation cavity 45 are in close contact with the metal contacts on the printer 1 to supply power to the printer and transmit electrical signals representing the physiological parameters of the patient to the printer. Of course, the printer 1 can also be electrically connected to the monitor main body 43 through an external cable. To ensure that the printer is correctly installed in place in the accommodation cavity, a positioning rib 47 is formed on the bottom wall of the accommodation cavity, and the bottom of the printer 1 is correspondingly formed with a positioning groove 49 (see Figure 2 ) matching the positioning rib 47. In addition to removably placing the printer 1, the accommodation cavity 45 can also removably place devices for measuring other parameters of the patient, such as a body temperature module, a blood pressure module, a blood oxygen module, a pulse module, and / or a heart rate module, etc.

[0049] The printer according to the present application, since the printer paper door assembly comprises a door frame pivotally mounted at one end to the main housing, a panel pivotally mounted to the front side of the door frame, and a rubber pressure roller movably mounted to the rear side of the door frame at the other end of the door frame, when unlocked, the operator only needs to grasp the lower end of the panel inside and outwardly force, without the need to set a separate unlocking mechanism on the printer paper door assembly, the panel can be set as a whole plate with a smooth outer surface, not only simple structure, easy to manufacture, but also has a beautiful overall appearance, is conducive to the cleaning and disinfection of the printer. In addition, the unlocking area is basically not limited from the lower end of the panel, which is conducive to the operation of different users. The monitor according to the present application has the above advantages of the printer, and has a very compact and simple structure as a whole.

[0050] Although the present application has been described in detail in connection with the preferred embodiments thereof, it should be understood that such detailed description is just for the purpose of explanation and not in the sense of limitation. For example, although the present application has been described in the above preferred embodiments in connection with the printer used with the monitor, the use of the printer according to the present application should not be limited, it can be used in any printing scene. The scope of the present application is determined by the technical solutions defined in the claims.

Claims

1. A printer comprising: a main housing (3); a print head assembly (5) disposed in the main housing (3); a paper hopper (7) disposed in the main housing (3); and a paper hopper door assembly (9) pivotably mounted to the main housing (3); characterized in that the paper hopper door assembly (9) comprises: a door frame (11) pivotably mounted at one end to the main housing (3); a face plate (33) pivotably mounted to a front side of the door frame (11); and a rubber platen (23) movably mounted to a rear side of the door frame (11) at the other end of the door frame (11), the rubber platen (23) being capable of being removably snapped into a snap slot (41) on the print head assembly (5).

2. The printer of claim 1, wherein, A pivot axis about which the face plate (33) rotates is closer to the other end of the door frame (11) than to the one end of the door frame (11).

3. The printer of claim 2, wherein, The door frame (11) has a gradually decreasing thickness from a position of the pivot axis towards the other end of the door frame (11) so as to define a rotation space (S) between the door frame (11) and the face plate (33) allowing the face plate (33) to pivot.

4. The printer of claim 1, wherein, Two mounting protrusions (19) are provided spaced apart at the rear side of the other end of the door frame (11), a U-shaped recess (21) being formed on each of the mounting protrusions, the U-shaped recess (21) having a gradually increasing width from an opening towards a bottom such that the support shaft (25) of the rubber platen (23) has a freedom of movement in the U-shaped recess (21) but not out of the U-shaped recess (21) when received in the U-shaped recess (21).

5. The printer of claim 1, wherein, A cantilever (37) is formed on one of the door frame (11) and the face plate (33), a cavity (C) being formed on the other of the door frame (11) and the face plate (33), the cantilever (37) being inserted into and abutting against a side wall of the cavity (C) when the face plate (33) is pivotably mounted to the door frame (11).

6. The printer of claim 1, wherein, A mounting shaft (13) is provided on each of two sides of the one end of the door frame (11), the door frame (11) being pivotably mounted to the main housing (3) by the mounting shafts (13).

7. The printer of claim 1, wherein, A gripping protrusion (39) is provided on an inner side of the face plate (33) close to the one end of the door frame (11).

8. The printer of claim 1, wherein, A reinforcing rib is formed on each of a front side of the door frame (11) and a rear side of the face plate (33).

9. The printer of claim 1, wherein, The paper hopper (7) is further connected to a rear side of the door frame (11).

10. The printer of claim 1, wherein, The printer further comprises a driving mechanism disposed in the main housing (3) and configured to drive the rubber platen (23) to rotate.

11. The printer of claim 1, wherein, The snap slot (41) is arc-shaped.

12. A monitor characterized by The monitor comprises the printer according to any one of claims 1-11.

13. The monitor of claim 12, wherein, The monitor comprises a monitor main body (43) provided with a receiving cavity (45), and the printer is removably arranged in the receiving cavity and electrically connected with the monitor main body.

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