Automatic uncovering mechanism of printer and printer

Abstract

The utility model belongs to the technical field of printers, and relates to an automatic uncovering mechanism of a printer and the printer, the automatic uncovering mechanism comprises a driving unit arranged on a printer body, the output end of the driving unit is connected with a convex part, and the center of the convex part and the center of the output end of the driving unit are in an eccentric state; the connecting rod is slidably connected to the printer body and can move up and down on the printer body; one end of the connecting rod is movably connected with a pressing end of a deflector rod of the printer body; a stroke long-strip hole is formed in the other end of the connecting rod, and the protruding part is located in the stroke long-strip hole. After the structure is adopted, the beneficial effects are that the convex part rotates to drive the connecting rod, the rotating motion is changed into the reciprocating lifting motion, the displacement size of the connecting rod is controlled by the preset distance between the center of the convex part and the center of the output end of the driving unit, the motion stroke is easy to control, the driving unit is utilized to realize automatic opening of the printer flip cover, the automation degree is high, and the operation is convenient. The practicability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of printers, in particular to an automatic cover opening mechanism of a printer and the printer. Background Art

[0002] Thermal printers are widely used in POS terminal systems, banking systems, medical instruments and other fields. Its working principle is to use a semiconductor heating element installed on the print head. After the print head is heated and contacts the thermal printing paper, the required text and pattern can be printed. In the prior art, thermal printers are equipped with a press-type cover opening device to automatically pop open the flip cover. The cover opening method is mainly manual, which requires the user to open the cover by manually pushing the lever. If the machine is relatively wide or the user has little strength, it is very inconvenient to open the cover, or it requires more force to push the lever to open the cover. The practicality is poor, so it is necessary to improve it. Utility Model Content

[0003] In order to solve the above problems in the prior art, the utility model provides an automatic cover opening mechanism of a printer and a printer, which are convenient to open the cover and have good practicality.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] As one aspect of the utility model, an automatic cover opening mechanism of a printer is provided, which comprises: a driving unit arranged on a printer body, wherein an output end of the driving unit is connected to a convex portion, and a center of the convex portion is eccentric to a center of the output end of the driving unit;

[0006] It also includes a connecting rod slidably connected to the printer body, and the connecting rod can move up and down on the printer body; one end of the connecting rod is movably connected to the pressing end of the lever of the printer body; the other end of the connecting rod is provided with a travel strip hole, and the convex part is located in the travel strip hole.

[0007] Optionally, a sliding portion is further included, and the connecting rod is slidably connected to the printer body via the sliding portion.

[0008] Optionally, the sliding portion includes a slide groove provided on the printer body, the width of the connecting rod is matched with the slide groove, and the connecting rod can slide in the slide groove.

[0009] Optionally, the sliding portion further comprises a limiting member arranged on the printer body, wherein the limiting member is located in the slide groove; a limiting hole is arranged on the connecting rod, and when the connecting rod is connected to the slide groove, the limiting member is located in the limiting hole.

[0010] Optionally, an elastic member is further included, one end of the elastic member is connected to the connecting rod, and the other end of the elastic member is connected to the printer body.

[0011] Optionally, it also includes a connecting part, and the elastic member is connected between the printer body and the connecting rod through the connecting part; the connecting part includes a connecting block connected to the side of the connecting rod, and a guide column is formed on the connecting block, and the elastic member is sleeved on the guide column; a limit block is formed on the printer body, and when the connecting rod is connected to the printer body, the limit block is located directly below the connecting block, and the elastic member is located between the connecting block and the limit block; a guide hole for the guide column to pass through is formed on the limit block, and the guide column cooperates with the guide hole.

[0012] Optionally, a lever connecting piece is further included, and one end of the connecting rod is movably connected to the pressing end of the lever of the printer body through the lever connecting piece.

[0013] Optionally, the lever connecting member includes a lever connecting block connected to the pressing end of the lever of the printer body, a connecting rod connecting column is formed on the lever connecting block, one end of the connecting rod is provided with a lever connecting hole matching with the connecting rod connecting column, and the connecting rod connecting column and the lever connecting hole are movably connected.

[0014] Optionally, a connecting disk is further included, and the output end of the driving unit is connected to a protrusion via the connecting disk.

[0015] As another aspect of the present invention, a printer is provided, which includes the automatic cover opening mechanism of the printer as described above.

[0016] The beneficial effects of the automatic cover opening mechanism and the printer of the utility model are specifically embodied in that: the rotation of the convex part drives the connecting rod to change the rotational motion into a reciprocating lifting motion, the displacement size of the connecting rod is controlled by the preset distance between the center of the convex part and the center of the output end of the driving unit, the motion stroke is easy to control, and the driving unit is used to realize the automatic cover opening of the printer, which has a high degree of automation and is convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0018] Figure 1 It is a structural schematic diagram of the automatic cover opening mechanism of the printer of the utility model;

[0019] Figure 2 It is a structural exploded diagram of the automatic cover opening mechanism of the printer of the utility model. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] An automatic cover opening mechanism of a printer according to an embodiment of the present application, such as Figure 1-Figure 2 As shown, it includes: a driving unit 2 arranged on a printer body 1. It should be noted that the printer body 1 is a prior art, that is, the printer body 1 itself has a push-type cover opening structure, and its specific structure is not repeated here; the driving unit 2 includes but is not limited to a motor, as long as it can realize a driving device of torque; the output end of the driving unit 2 is connected to a convex portion 31 through a connecting disk 3, and the center of the convex portion 31 is eccentric to the center of the output end of the driving unit 2, that is, there is a preset distance between the center of the convex portion 31 and the center of the output end of the driving unit 2; as an example, the convex portion 31 is a guide column;

[0022] The printer body 1 further includes a connecting rod 4 which is slidably connected to the printer body 1 and can move up and down on the printer body 1. One end of the connecting rod 4 is movably connected to the pressing end of the lever 11 of the printer body 1. The other end of the connecting rod 4 is provided with a travel strip hole 41, which is arranged horizontally, and the protrusion 31 is located in the travel strip hole 41. The driving unit 2 works to drive the protrusion 31 to rotate. During the rotation, the protrusion 31 drives the connecting rod 4 to move downward relative to the printer body 1, thereby driving the pressing end of the lever 11 to rotate downward. The lever 11 opens the locking portion formed in a locking state between the printer body 1 and the printer flip cover 12, and the printer flip cover 12 is automatically opened under the action of the flip cover rotating portion. Then, the connecting rod 4 returns to its initial position under the operation of the driving unit 2, and the pressing end of the lever 11 returns to its original position.

[0023] In one embodiment, it also includes a sliding portion 5, and the connecting rod 4 is slidably connected to the printer body 1 through the sliding portion 5; the sliding portion 5 includes a slide groove 51 and a limit member 52 provided on the printer body 1, the width of the connecting rod 4 is adapted to the slide groove 51, and the connecting rod 4 can slide in the slide groove 51; the limit member 52 is located in the slide groove 51; a limit hole 42 is provided on the connecting rod 4, when the connecting rod 4 is connected to the slide groove 51, the limit member 52 is located in the limit hole 42, and the limit member 52 serves as a stroke limit of the connecting rod 4; as an example, the limit member 52 is two limit columns arranged at intervals, and the length of the limit hole 42 is greater than the distance between the two limit columns, so as to protect the connecting rod 4 from having a preset moving distance.

[0024] In one embodiment, an elastic member 6 is also included, and the elastic member 6 is a return spring. One end of the elastic member 6 is connected to the connecting rod 4, and the other end of the elastic member 6 is connected to the printer body 1. Under normal circumstances, the elastic member 6 is in an uncompressed state; when the connecting rod 4 moves downward, the elastic member 6 is compressed, and the elastic member 6 plays a role in returning the connecting rod 4.

[0025] In one embodiment, it also includes a connecting portion 7, and the elastic member 6 is connected between the printer body 1 and the connecting rod 4 through the connecting portion 7; the connecting portion 7 includes a connecting block 71 connected to the side of the connecting rod 4, and a guide column 72 is formed on the connecting block 71, and the elastic member 6 is sleeved on the guide column 72; a limit block 13 is formed on the printer body 1, and when the connecting rod 4 is connected to the printer body 1, the limit block 13 is located directly below the connecting block 71, and the elastic member 6 is located between the connecting block 71 and the limit block 13; a guide hole 14 is formed on the limit block 13 for the guide column 72 to pass through, and the guide column 72 cooperates with the guide hole 14 to prevent the elastic member 6 from being offset, thereby ensuring the normal operation of the elastic member 6.

[0026] In one embodiment, it also includes a lever connecting member 8, and one end of the connecting rod 4 is movably connected to the pressing end of the lever 11 of the printer body 1 through the lever connecting member 8; the lever connecting member 8 includes a lever connecting block 81 connected to the pressing end of the lever 11 of the printer body 1, and a connecting rod connecting column 82 is formed on the lever connecting block 81. One end of the connecting rod 4 is provided with a lever connecting hole 83 that matches the connecting rod connecting column 82, and the connecting rod connecting column 82 is movably connected to the lever connecting hole 83, that is, the size of the lever connecting hole 83 is larger than the diameter of the connecting rod connecting column 82.

[0027] In this embodiment, the connecting rod 4 is driven by the rotation of the protrusion 31, and the rotational motion is changed into a reciprocating lifting motion. The displacement size of the connecting rod 4 is controlled by the preset distance between the center of the protrusion 31 and the center of the output end of the driving unit 2. The motion stroke is easy to control. The driving unit 2 is used to realize the automatic opening of the printer cover 12. The power of the driving unit 2 is selected according to the size of the printer cover 12. The degree of automation is high and it is convenient and practical.

[0028] A printer according to one embodiment of the present application includes the automatic cover opening mechanism of the printer as described above.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0030] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0031] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0032] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0033] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the present invention.

Claims

1. An automatic cover opening mechanism for a printer, characterized in that: It includes: A driving unit is arranged on the printer body, wherein the output end of the driving unit is connected to a convex portion, and the center of the convex portion is eccentric to the center of the output end of the driving unit; It also includes a connecting rod slidably connected to the printer body, and the connecting rod can move up and down on the printer body; one end of the connecting rod is movably connected to the pressing end of the lever of the printer body; the other end of the connecting rod is provided with a travel strip hole, and the convex part is located in the travel strip hole.

2. The automatic cover opening mechanism of the printer according to claim 1, characterized in that: It also includes a sliding part, and the connecting rod is slidably connected to the printer body through the sliding part.

3. The automatic cover opening mechanism of the printer according to claim 2, characterized in that: The sliding part comprises a slide groove arranged on the printer body, the width of the connecting rod is matched with the slide groove, and the connecting rod can slide in the slide groove.

4. The automatic cover opening mechanism of the printer according to claim 3, characterized in that: The sliding part also includes a limiting member arranged on the printer body, and the limiting member is located in the slide groove; a limiting hole is arranged on the connecting rod, and when the connecting rod is connected to the slide groove, the limiting member is located in the limiting hole.

5. The automatic cover opening mechanism of the printer according to claim 1, characterized in that: It also includes an elastic member, one end of which is connected to the connecting rod, and the other end of which is connected to the printer body.

6. The automatic cover opening mechanism of the printer according to claim 5, characterized in that: It also includes a connecting part, through which the elastic member is connected between the printer body and the connecting rod; the connecting part includes a connecting block connected to the side of the connecting rod, a guide column is formed on the connecting block, and the elastic member is sleeved on the guide column; a limit block is formed on the printer body, when the connecting rod is connected to the printer body, the limit block is located directly below the connecting block, and the elastic member is located between the connecting block and the limit block; a guide hole for the guide column to pass through is formed on the limit block, and the guide column cooperates with the guide hole.

7. The automatic cover opening mechanism of a printer according to claim 1, characterized in that: It also includes a lever connecting piece, and one end of the connecting rod is movably connected to the pressing end of the lever of the printer body through the lever connecting piece.

8. The automatic cover opening mechanism of a printer according to claim 7, characterized in that: The lever connecting piece includes a lever connecting block connected to the pressing end of the lever of the printer body, a connecting rod connecting column is formed on the lever connecting block, one end of the connecting rod is provided with a lever connecting hole matched with the connecting rod connecting column, and the connecting rod connecting column is movably connected to the lever connecting hole.

9. The automatic cover opening mechanism of a printer as claimed in claim 1, characterized in that: It also includes a connecting disk, and the output end of the driving unit is connected to a protrusion through the connecting disk.

10. A printer, characterized in that: It comprises the automatic cover opening mechanism of the printer as claimed in any one of claims 1 to 9.

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