Printing mechanism capable of preventing paper jamming and POS machine
By designing paper outlets at the bottom of the POS machine and optimizing paper outlets, using guide protrusions and gaps to prevent paper jams, the problem of paper jams in the POS machine outlets is solved, and the stability and user experience are improved.
Patent Information
- Application Number
- CN202422826135.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-11-19
AI Technical Summary
The paper outlet design of existing POS machines is prone to invasion of foreign objects, causing paper jamming, and affecting the stability of the equipment and user experience.
Design the paper outlet at the bottom of the POS machine, and redesign the paper outlet channel so that the pleated paper will wrinkle in the channel without paper jamming, using guide bumps and preset gaps to prevent paper from entering the print outlet.
It effectively reduces paper jams, improves the stability and user experience of the equipment, simplifies the cleaning process, and saves paper resources.
Smart Images
Figure CN223237231U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of printing, and in particular relates to a printing mechanism and a POS machine that can prevent paper jams. Background Art
[0002] At present, the paper outlet of the handheld POS printer is mostly designed on the front of the POS machine. Although this layout is intuitive and convenient for users to observe the printing status, it has a significant flaw: the paper outlet can easily become a "gateway" for foreign objects to enter. Once dust, paper scraps or other small objects accidentally fall in, it may interfere with the normal operation of the printer and even cause malfunctions.
[0003] To address this issue, the printer's paper outlet was moved to the bottom of the POS machine. This change effectively reduced the risk of foreign matter falling into the printer and improved the stability of the device. However, because the paper roll needs to be bent counterclockwise at a large angle inside the machine, the paper output process is no longer so smooth. Especially when a lot of waste paper is piled up at the paper outlet, normal paper output will be subject to the reaction force from the waste paper pile, thereby increasing the risk of paper jams. The occurrence of paper jams not only wastes precious paper resources, but also seriously affects the user experience. Whenever a paper jam occurs, users often need to open the printer cover and manually clean up the waste paper. This process is cumbersome and time-consuming, greatly reducing work efficiency. Therefore, it is necessary to make improvements. Utility Model Content
[0004] In order to solve the above problems in the prior art, the utility model provides a paper jam-proof printing mechanism and a POS machine, which are used to solve the paper jam problem.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] As one aspect of the present invention, a paper jam prevention printing mechanism is provided, which includes: a housing having an installation space;
[0007] The bracket is connected to the installation space of the shell; the bracket is formed with a paper bin, and the paper bin is used for installing the paper roll;
[0008] A printer connected to the bracket;
[0009] A paper bin cover is movably connected to the shell; one end of the paper bin cover is rotatably connected to the shell, and a paper outlet is formed between the other end of the paper bin cover and the shell; a paper outlet channel is formed between the paper bin cover, the bracket, the printer and the shell, and the paper outlet channel is communicated with the paper outlet.
[0010] Optionally, installation slots for installing the printer are respectively provided on the left and right sides of the bracket, and the left and right sides of the printer are respectively connected to the corresponding installation slots.
[0011] Optionally, the paper output channel includes a printing paper inlet of the printer, a printing paper outlet of the printer, and a first channel formed between the paper bin cover and the shell, and the end of the first channel forms a paper outlet; the movable end of the paper roll enters from the printing paper inlet, passes through the printing paper outlet, the first channel in sequence, and finally comes out from the paper outlet; the first channel is straight; and the first channel and the printing paper outlet are inclined.
[0012] Optionally, a preset gap is formed between the printing paper outlet and the paper bin cover, and the preset gap is 0.1-1 mm.
[0013] Optionally, a first guide protrusion is formed on the inner bottom of the paper bin cover, and the preset gap is formed between the first guide protrusion and the printing paper outlet.
[0014] Optionally, a second guide protrusion is formed on the inner bottom of the paper bin cover, one side of the second guide protrusion cooperates with the paper bin; the other side of the second guide protrusion cooperates with the printing paper inlet.
[0015] Optionally, a buffer portion is formed at the inner end of the first channel.
[0016] As another aspect of the present invention, a POS machine is provided, which includes the anti-paper jam printing mechanism as described above.
[0017] The beneficial effects of the anti-paper jam printing mechanism and POS machine of the present invention are specifically embodied in that: the paper outlet channel is redesigned to change the force transmission point of the wrinkled paper. When the paper at the paper outlet is blocked, the force of the wrinkled paper will wrinkle along with the paper in the first channel, and will not wrinkle between the printing paper inlet and the printing paper outlet of the printer; the printer's rubber roller will still push the wrinkled paper out of the outlet, thereby achieving the anti-paper jam function. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The drawings in the specification, which constitute a part of this 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.
[0019] Figure 1 This is a schematic structural diagram of the anti-paper jam printing mechanism of the present invention;
[0020] Figure 2 This is an exploded view of the structure of the anti-paper jam printing mechanism of the present invention;
[0021] Figure 3 This is an exploded view of the structure of the anti-paper jam printing mechanism of the present invention;
[0022] Figure 4 This is a structural cross-sectional view of the anti-paper jam printing mechanism of the present invention. DETAILED DESCRIPTION
[0023] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the following will provide a clear and complete description of the technical solutions of the present invention in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.
[0024] An anti-paper jam printing mechanism according to an embodiment of the present application is as follows: Figure 1-Figure 4 As shown, it comprises: a housing 1, wherein the housing 1 has an installation space 11;
[0025] The bracket 2 is connected to the installation space 11 of the housing 1; the bracket 2 is formed with a paper bin 21, which is used to install the paper roll 5; the shape of the paper bin 21 is adapted to the shape of the paper roll 5;
[0026] The printer 3 is connected to the bracket 2. It should be noted that the structure and operation of the printer 3 are conventional and will not be described in detail here. The bracket 2 has mounting slots 22 for mounting the printer 3 on its left and right sides, and the left and right sides of the printer 3 are connected to the corresponding mounting slots 22.
[0027] The paper bin cover 4 is movably connected to the shell 1; one end of the paper bin cover 4 is rotatably connected to the shell 1, and a paper outlet 6 is formed between the other end of the paper bin cover 4 and the shell 1; a paper outlet channel 7 is formed between the paper bin cover 4, the bracket 2, the printer 3 and the shell 1, and the paper outlet channel 7 is communicated with the paper outlet 6.
[0028] In one embodiment, if Figure 4 As shown, the paper outlet channel 7 includes a printing paper inlet 71 of the printer 3, a printing paper outlet 72 of the printer 3, and a first channel 73 formed between the paper compartment cover 4 and the housing 1, with the end of the first channel 73 forming the paper outlet 6; the inner end of the first channel 73 is recessed toward the paper compartment cover 4 to form a buffer portion 74 for buffering paper coming out of the printing paper outlet 72; the movable end of the paper roll 5 enters from the printing paper inlet 71, passes through the printing paper outlet 72 and the first channel 73 in sequence, and finally exits from the paper outlet 6; the first channel 73 is straight; and the first channel 73 is inclined to the printing paper outlet 72, so that wrinkled paper in the first channel 73 is not easily entered into the printing paper outlet 72.
[0029] In one embodiment, if Figure 4As shown, a preset gap is formed between the print paper outlet 72 and the paper bin cover 4. The preset gap is 0.1-1 mm, which blocks the wrinkled paper in the first channel 73 from entering the print paper outlet 72, thereby preventing paper jams. The wrinkled paper in the first channel 73 can be pulled out manually.
[0030] In one embodiment, if Figure 4 As shown, a first guide protrusion 41 is formed on the inner bottom of the paper bin cover 4 , and the preset gap is formed between the first guide protrusion 41 and the print paper outlet 72 .
[0031] In one embodiment, if Figure 4 As shown, a second guide protrusion 42 is formed on the inner bottom of the paper bin cover 4, and one side of the second guide protrusion 42 cooperates with the paper bin 21 to jointly limit the paper roll 5; the other side of the second guide protrusion 42 cooperates with the printing paper inlet 71 to facilitate the entry of the movable end of the paper roll 5.
[0032] A POS machine according to another embodiment of the present application includes the anti-paper jam printing mechanism described above.
[0033] 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, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.
[0034] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application. At the same time, 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 actual proportional relationships. 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 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 the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.
[0035] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this 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. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.
[0036] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. 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 figures. For example, if the device in the 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" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0037] 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.
[0038] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model in specific circumstances.
[0039] 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. A printing mechanism for preventing paper jams, characterized in that: It includes: a housing having an installation space; A bracket connected to the installation space of the shell; The bracket is formed with a paper bin, which is used for installing a paper roll; A printer connected to the bracket; A paper bin cover is movably connected to the shell; one end of the paper bin cover is rotatably connected to the shell, and a paper outlet is formed between the other end of the paper bin cover and the shell; a paper outlet channel is formed between the paper bin cover, the bracket, the printer and the shell, and the paper outlet channel is communicated with the paper outlet.
2. The anti-paper jam printing mechanism according to claim 1, characterized in that: The left and right sides of the bracket are respectively provided with installation slots for installing the printer, and the left and right sides of the printer are respectively connected to the corresponding installation slots.
3. The anti-paper jam printing mechanism according to claim 1, wherein: The paper output channel includes a printing paper inlet of the printer, a printing paper outlet of the printer, and a first channel formed between the paper bin cover and the shell, and the end of the first channel forms a paper outlet; the movable end of the paper roll enters from the printing paper inlet, passes through the printing paper outlet and the first channel in sequence, and finally exits from the paper outlet; the first channel is straight; and the first channel and the printing paper outlet are inclined.
4. The anti-paper jam printing mechanism according to claim 3, characterized in that: A preset gap is formed between the printing paper outlet and the paper bin cover, and the preset gap is 0.1-1 mm.
5. The anti-paper jam printing mechanism according to claim 4, characterized in that: A first guide protrusion is formed on the inner bottom of the paper bin cover, and the preset gap is formed between the first guide protrusion and the printing paper outlet.
6. The anti-paper jam printing mechanism according to claim 3, characterized in that: A second guide protrusion is formed on the inner bottom of the paper bin cover, one side of the second guide protrusion is matched with the paper bin; the other side of the second guide protrusion is matched with the printing paper inlet.
7. The anti-paper jam printing mechanism according to claim 3, characterized in that: A buffer portion is formed at an inner end of the first channel.
8. A POS machine, characterized in that: It comprises the anti-paper jam printing mechanism as claimed in any one of claims 1 to 7.