Paper length and paper width detection mechanism for paper box of printer and printer

Abstract

The utility model relates to the technical field of printers, in particular to a printer carton paper length and width detection mechanism and a printer, and aims to solve the problems that in the prior art, an existing detection mechanism can only detect the length of paper and cannot detect the width of paper, and the length of standard paper can only be detected. And the length and the width of the custom paper cannot be detected. According to the printer carton paper length and width detection mechanism provided by the utility model, the first voltage end conductive element, the first middle conductive element, the first linear resistor element and the grounding element form the first detection loop used for detecting the paper width, and the resistance value of the first linear resistor element in the first detection loop changes along with the movement of the first baffle plate; the second voltage end conductive element, the second middle conductive element, the second linear resistor element and the grounding element form a second detection loop used for detecting the length of the paper, and the resistance value of the second linear resistor element in the second detection loop changes along with movement of the second baffle.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to a paper length and width detection mechanism for a printer paper box and a printer. Background Art

[0002] The paper length detection mechanism of the existing printer paper box generally contacts the electrical switch of the corresponding paper length through the action of the mechanical structure, and the corresponding electrical circuit signal will be fed back to the main control board. There are generally two types of paper length detection mechanisms in the market: 1. Figure 8 , rear baffle sliding opening + 4-key switch. This solution is that when the user pushes the rear baffle to press A4 (for example) paper, the corresponding opening of the A4 paper will slide to the 4-key switch and press the corresponding 2 or more keys of the A4 paper. At this time, the electrical feedback circuit corresponding to the A4 paper is turned on; 2. Refer to Figure 8 , the rotating disk opening + 4-key switch at the bottom of the paper box. This solution is that when the user pushes the rear baffle to press the A4 (for example) paper, the opening corresponding to the corresponding A4 paper will rotate to the 4-key switch and press the 2 keys of the corresponding A4 paper. At this time, the electrical feedback circuit corresponding to the A4 paper is turned on.

[0003] However, the existing detection mechanism can only detect the length of paper, but not the width of paper, and can only detect the length of several standard papers, but cannot detect the length and width of custom paper. Utility Model Content

[0004] The utility model aims to provide a printer paper box paper length and paper width detection mechanism and a printer, so as to solve the problems in the prior art that the existing detection mechanism can only detect the paper length but not the paper width, and can only detect the lengths of several standard papers but cannot detect the length and width of custom paper.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0006] In a first aspect, the utility model provides a printer paper box paper length and width detection mechanism, comprising: a first voltage end conductive element, a first intermediate conductive element, a first linear resistance element, a second voltage end conductive element, a second intermediate conductive element, a second linear resistance element and a grounding element;

[0007] The first intermediate conductive element is connected to the first baffle, the first intermediate conductive element is slidably connected to the first voltage end conductive element, the first intermediate conductive element is slidably connected to the first linear resistance element, the first voltage end conductive element, the first intermediate conductive element, the first linear resistance element and the grounding element form a first detection loop for detecting paper width, and the resistance value of the first linear resistance element in the first detection loop changes with the movement of the first baffle;

[0008] The second intermediate conductive element is connected to the second baffle, the second intermediate conductive element is slidably connected to the second voltage end conductive element, the second intermediate conductive element is slidably connected to the second linear resistance element, the second voltage end conductive element, the second intermediate conductive element, the second linear resistance element and the grounding element form a second detection circuit for detecting paper length, and the resistance value of the second linear resistance element in the second detection circuit changes with the movement of the second baffle.

[0009] Further, the grounding element is electrically connected to the first linear resistance element;

[0010] The grounding element is electrically connected to the second linear resistance element.

[0011] Furthermore, a first voltage terminal for connecting to a power source is provided at the end of the first voltage end conductive element.

[0012] Furthermore, a second voltage terminal for connecting to a power source is provided at the end of the second voltage end conductive element.

[0013] Furthermore, a grounding terminal is provided at the end of the grounding element.

[0014] Furthermore, the first linear resistance element is a resistance sheet or a resistance wire;

[0015] The second linear resistor element is a resistor sheet or a resistor wire.

[0016] Furthermore, the first voltage-end conductive element is a conductive sheet or a conductive wire.

[0017] Furthermore, the grounding element is a grounding plate or a grounding wire.

[0018] Furthermore, the first voltage-end conductive element, the first linear resistance element, the second voltage-end conductive element, the second linear resistance element and the grounding element are all connected to the bottom plate of the paper box.

[0019] In a second aspect, the printer provided by the utility model includes the printer paper box paper length and width detection mechanism.

[0020] Based on the above technical solutions, the technical effects that can be achieved by the utility model are:

[0021] The utility model provides a paper length and width detection mechanism for a printer paper box. Since the first intermediate conductive element is slidably connected to the first voltage end conductive element and the first voltage end conductive element, and the first intermediate conductive element is connected to the first baffle of the paper box, when paper is put into the paper box, as the first baffle moves, the first intermediate conductive element is driven to move relative to the first voltage end conductive element and the first voltage end conductive element, so as to change the resistance value of the first linear resistor element in the first detection loop, and then the width value of the paper is detected by feeding back the corresponding resistance value through the circuit; since the second intermediate conductive element is slidably connected to the second voltage end conductive element and the second voltage end conductive element, and the second intermediate conductive element is connected to the second baffle of the paper box, Then, put the paper into the paper box, and as the second baffle moves, the second intermediate conductive element is driven to move relative to the second voltage end conductive element and the second voltage end conductive element to change the resistance value of the second linear resistor element in the second detection circuit, and then the length of the paper is detected by feedback of the corresponding resistance value by the circuit. The printer paper box paper length and width detection mechanism provided by the utility model can detect the length and width of the paper, and can detect the paper length and paper width corresponding to the custom paper according to the corresponding resistance value fed back by the circuit, which solves the problems existing in the prior art that the existing detection mechanism can only detect the paper length but not the paper width, and can only detect the length of several standard papers but cannot detect the length and width of the custom paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of a paper length and width detection mechanism for a paper box of a printer provided by an embodiment of the utility model;

[0024] Figure 2 is a partially enlarged schematic diagram of the first detection loop;

[0025] Figure 3 is a partial enlarged schematic diagram of the second detection circuit;

[0026] Figure 4 A schematic diagram of a structure in which a second intermediate conductive element is connected to a second voltage end conductive element and a second linear resistance element;

[0027] Figure 5 It is a structural schematic diagram of a paper box;

[0028] Figure 6The figure is a schematic diagram of the movement state of the first baffle, the second baffle and the third baffle in the paper box;

[0029] Figure 7 It is the electrical schematic diagram;

[0030] Figure 8 It is a structural schematic diagram of another paper length detection mechanism in the prior art.

[0031] Icon: 1-first voltage terminal conductive element; 1a-first voltage terminal;

[0032] 2-first intermediate conductive element; 3-first linear resistance element;

[0033] 4-second voltage end conductive element; 4a-second voltage terminal; 5-second intermediate conductive element; 6-second linear resistance element; 7-grounding element; 7a-grounding terminal;

[0034] 8-first baffle; 9-second baffle; 10-third baffle; 11-gear; 12-rack. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0038] The utility model provides a paper length and width detection mechanism for a printer paper box, comprising: a first voltage end conductive element 1, a first intermediate conductive element 2, a first linear resistor element 3, a second voltage end conductive element 4, a second intermediate conductive element 5, a second linear resistor element 6 and a grounding element 7; the first intermediate conductive element 2 is connected to a first baffle 8, the first intermediate conductive element 2 is slidably connected to the first voltage end conductive element 1, the first intermediate conductive element 2 is slidably connected to the first linear resistor element 3, the first voltage end conductive element 1, the first intermediate conductive element 2, the first linear resistor element 3 and the grounding element 7 form a first detection circuit for detecting paper width, and the resistance value of the first linear resistor element 3 in the first detection circuit changes with the movement of the first baffle 8; the second intermediate conductive element 5 is connected to a second baffle 9, the second intermediate conductive element 5 is slidably connected to the second voltage end conductive element 4, the second intermediate conductive element 5 is slidably connected to the second linear resistor element 6, the second voltage end conductive element 4, the second intermediate conductive element 5, the second linear resistor element 6 and the grounding element 7 form a second detection circuit for detecting paper length, and the resistance value of the second linear resistor element 6 in the second detection circuit changes with the movement of the second baffle 9.

[0039] The utility model provides a paper length and width detection mechanism for a printer paper box. Since the first intermediate conductive element 2 is slidably connected to the first voltage end conductive element 1 and the first voltage end conductive element 1, and the first intermediate conductive element 2 is connected to the first baffle 8 of the paper box, when paper is put into the paper box, as the first baffle 8 moves, the first intermediate conductive element 2 is driven to move relative to the first voltage end conductive element 1 and the first voltage end conductive element 1, so as to change the resistance value of the first linear resistor 3 in the first detection loop, and then the width of the paper is detected by feedback of the corresponding resistance value by the circuit; since the second intermediate conductive element 5 is slidably connected to the second voltage end conductive element 4 and the second voltage end conductive element 4, and the second intermediate conductive element 5 is connected to the second The baffle 9 is connected, and the paper is put into the paper box. As the second baffle 9 moves, the second intermediate conductive element 5 is driven to move relative to the second voltage end conductive element 4 and the second voltage end conductive element 4 to change the resistance value of the second linear resistor 6 in the second detection circuit, and then the length of the paper is detected by feedback of the corresponding resistance value by the circuit. The printer paper box paper length and width detection mechanism provided by the utility model can detect the length and width of the paper at the same time, and can detect the paper length and paper width corresponding to the custom paper according to the corresponding resistance value fed back by the circuit, which solves the problems in the prior art that the existing detection mechanism can only detect the paper length but not the paper width, and can only detect the length of several standard papers but cannot detect the length and width of the custom paper.

[0040] The following combination Figure 1-Figure 7 The structure and shape of the paper length and width detection mechanism of the printer paper box provided in this embodiment are described in detail.

[0041] The first voltage end conductive element 1, the first linear resistance element 3, the second voltage end conductive element 4, the second linear resistance element 6 and the grounding element 7 are all fixedly connected to the bottom plate of the paper box.

[0042] Regarding the shapes and structures of the first voltage end conductive element 1, the first intermediate conductive element 2, and the first linear resistance element 3, in detail:

[0043] Reference Figure 1 and Figure 2 , the first intermediate conductive element 2 is connected to the first baffle 8. For example, the first baffle 8 is the left baffle of the paper box; the first intermediate conductive element 2 is slidably connected to the first voltage end conductive element 1, the first intermediate conductive element 2 is slidably connected to the first linear resistance element 3, and the first intermediate conductive element 2 is electrically connected to the first voltage end conductive element 1 and the first linear resistance element 3. Specifically, the first intermediate conductive element 2 is configured as a bending structure, the bending structure includes a horizontal section and a vertical section, and arc-shaped protrusions are provided on the horizontal section and the vertical section. The arc-shaped protrusion on the vertical section is slidably connected to the first voltage end conductive element 1 and can slide relative to the first voltage end conductive element 1, and the arc-shaped protrusion on the horizontal section is slidably connected to the first linear resistance element 3 and can slide relative to the first linear resistance element 3.

[0044] The grounding element 7 is electrically connected to the first linear resistance element 3. The end of the first voltage end conductive element 1 is provided with a first voltage terminal 1a for connecting to a power source. The end of the grounding element 7 is provided with a grounding terminal 7a.

[0045] The first voltage end conductive element 1, the first intermediate conductive element 2, the first linear resistor element 3 and the grounding element 7 form a first detection loop for detecting the paper width. The resistance value of the first linear resistor element 3 in the first detection loop changes with the movement of the first baffle 8. In the first detection loop, refer to Figure 2 , Figure 2 The direction of the arrow in is the direction of current. The current flows in from the first voltage terminal 1a, passes through the first voltage end conductive element 1, the first intermediate conductive element 2, the first linear resistance element 3 and the grounding element 7 in sequence, and finally flows to the grounding terminal 7a of the grounding element 7.

[0046] Specifically, the first baffle 8 is the left baffle, and the relative position of the first baffle 8 is the third baffle 10, that is, the right baffle of the paper box. Racks 12 are provided on both the left baffle and the right baffle, and the rack 12 on the left baffle is connected to the first linear resistance element 3. A gear 11 is rotatably connected to the bottom plate of the paper box. The two racks 12 are arranged in parallel and are engaged with the gear 11. When the paper is put into the paper box, according to the paper width, the user pushes the third baffle 10, and the first baffle 8 will also move synchronously. The first intermediate conductive element 2 will slide on the first linear resistance element 3 and the first voltage end conductive element 1. The resistance value of the first linear resistance element 3 in the first detection circuit will change with the movement of the first baffle 8. When the user adjusts the position of the side baffle, one end of the paper in the width direction is against the left baffle, and the other end is against the right baffle. At the same time, the circuit feedbacks the resistance value corresponding to the paper width.

[0047] The detection principle is as follows:

[0048] According to the resistance formula R = ρL / S (where R is the resistance, ρ is the resistivity of the material, which is the inherent property of the material, L is the length of the material, and S is the cross-sectional area of ​​the material), the resistance is linearly related to the length of the homogeneous material. Therefore, a linear / sheet resistor part made of a homogeneous high-resistance material can be used as a way to detect distance. By changing the length of the first linear resistor element 3 in the electrical circuit to change its resistance value, the width change can be detected.

[0049] Regarding the shapes and structures of the second voltage end conductive element 4, the second intermediate conductive element 5, and the second linear resistance element 6, in detail:

[0050] Reference Figure 1 , Figure 3 and Figure 4 , the second intermediate conductive element 5 is connected to the second baffle 9. For example, the second baffle 9 is the rear baffle of the paper box. The second intermediate conductive element 5 is slidably connected to the second voltage end conductive element 4. The second intermediate conductive element 5 is slidably connected to the second linear resistance element 6. The second intermediate conductive element 5 is electrically connected to the second voltage end conductive element 4 and the second linear resistance element 6. Specifically, the second intermediate conductive element 5 is provided with arc-shaped protrusions, some of which are slidably connected to the second linear resistance element 6 and can slide relative to the second linear resistance element 6, and some of which are slidably connected to the second voltage end conductive element 4 and can slide relative to the second voltage end conductive element 4.

[0051] The grounding element 7 is electrically connected to the second linear resistance element 6. The end of the second voltage end conductive element 4 is provided with a second voltage terminal 4a for connecting to a power source.

[0052] The second voltage end conductive element 4, the second intermediate conductive element 5, the second linear resistor element 6 and the grounding element 7 form a second detection loop for detecting the length of paper. The resistance value of the second linear resistor element 6 in the second detection loop changes with the movement of the second baffle 9. Figure 3 , Figure 3 The direction of the arrow in is the direction of current. The current flows in from the second voltage terminal 4a, passes through the second voltage end conductive element 4, the second intermediate conductive element 5, the second linear resistance element 6 and the grounding element 7 in sequence, and finally flows to the grounding terminal 7a of the grounding element 7.

[0053] Specifically, refer to Figure 5 When the paper is put into the paper box, the user pushes the second baffle 9 according to the length of the paper, and the second intermediate conductive element 5 will slide on the second linear resistor element 6 and the second voltage end conductive element 4. The resistance value of the second linear resistor element 6 in the second detection circuit will change with the movement of the second baffle 9. When the user adjusts the position of the rear baffle, one end of the paper in the length direction is against the rear baffle, and the other end is aligned with the paper feed surface of the paper box and against the paper feed surface of the paper box. At the same time, the circuit feedbacks the resistance value corresponding to the length of the paper.

[0054] The detection principle of length measurement is the same as that of width measurement, which is also based on the resistance formula R=ρL / S. By changing the length of the second linear resistance element 6 in the electrical circuit to change its resistance value, the length change can be detected. The electrical schematic diagram can be referred to Figure 7 .

[0055] It should be noted that Figure 6 The figure is a schematic diagram of the movement of the left and right side baffles and the rear baffle in the paper box (the arrows in the figure are the movement directions of the baffles). Figure 6 is a schematic diagram of the upper perspective. Figure 1-4 The components in the figure are schematic diagrams of the detection mechanism after the carton is turned over.

[0056] The input voltage of the first voltage terminal 1a and the second voltage terminal 4a may be 3.3V, 5V or 12V.

[0057] Among them, the linear resistor is an alloy with high conductivity, which is a high resistance material, and can be constantan, aluminum nickel iron alloy, iron chromium aluminum alloy, nickel chromium alloy, or metal manganese, or some high resistance metal oxides and the like.

[0058] In an optional implementation, the first linear resistance element 3 is a resistance sheet or a resistance wire; the second linear resistance element 6 is a resistance sheet or a resistance wire.

[0059] In an optional embodiment, the first voltage end conductive element 1 is a conductive sheet or a conductive wire, and the grounding element 7 is a grounding sheet or a grounding wire.

[0060] The printer paper box paper length and width detection mechanism provided in this embodiment uses linear variable resistors. When the user adjusts the positions of the side baffles and the rear baffle, the circuit feeds back the resistance values ​​corresponding to the paper length and paper width, and the length and width of the paper can be detected.

[0061] The printer paper box paper length and width detection mechanism provided in this embodiment can detect the paper length and paper width at the same time; and it is user-friendly. The user does not need to set the paper size before printing. The machine automatically recognizes it, avoiding the risk of burning the machine after the user sets it incorrectly. It solves the problem that when the user sets the wrong paper width and paper length, paper jams will occur, the machine will burn, and the image will be inconsistent with the paper size; and it is friendly to firmware design and user experience. The firmware does not need a built-in paper size detection program, which solves the problem that the built-in paper size detection firmware program has a long interval between the first and second sheets of paper, affecting the customer experience; and the cost of the 4-key switch in the prior art is relatively expensive, and the cost of the printer paper box paper length and paper width detection mechanism provided in this embodiment is much lower than that of the 4-key switch.

[0062] Since the technical effect of the printer provided in this embodiment is the same as the technical effect of the printer paper box paper length and width detection mechanism provided in the above embodiment, it will not be repeated here.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A printer paper box paper length and width detection mechanism, characterized in that: include: A first voltage end conductive element (1), a first intermediate conductive element (2), a first linear resistive element (3), a second voltage end conductive element (4), a second intermediate conductive element (5), a second linear resistive element (6) and a grounding element (7); The first intermediate conductive element (2) is connected to the first baffle (8), the first intermediate conductive element (2) is slidably connected to the first voltage-end conductive element (1), the first intermediate conductive element (2) is slidably connected to the first linear resistor element (3), the first voltage-end conductive element (1), the first intermediate conductive element (2), the first linear resistor element (3) and the grounding element (7) form a first detection circuit for detecting paper width, and the resistance value of the first linear resistor element (3) in the first detection circuit changes with the movement of the first baffle (8); The second intermediate conductive element (5) is connected to the second baffle (9), the second intermediate conductive element (5) is slidably connected to the second voltage-end conductive element (4), the second intermediate conductive element (5) is slidably connected to the second linear resistive element (6), the second voltage-end conductive element (4), the second intermediate conductive element (5), the second linear resistive element (6) and the grounding element (7) form a second detection circuit for detecting the length of paper, and the resistance value of the second linear resistive element (6) in the second detection circuit changes with the movement of the second baffle (9).

2. The printer paper box paper length and width detection mechanism according to claim 1, characterized in that: The grounding element (7) is electrically connected to the first linear resistance element (3); The grounding element (7) is electrically connected to the second linear resistance element (6).

3. The printer paper box paper length and width detection mechanism according to claim 1, characterized in that: The end of the first voltage end conductive element (1) is provided with a first voltage terminal (1a) for connecting to a power source.

4. The printer paper box paper length and width detection mechanism according to claim 1, characterized in that: The end of the second voltage end conductive element (4) is provided with a second voltage terminal (4a) for connecting to a power source.

5. The printer paper box paper length and width detection mechanism according to claim 1, characterized in that: A grounding terminal (7a) is provided at the end of the grounding element (7).

6. The printer paper box paper length and width detection mechanism according to claim 1, characterized in that: The first linear resistance element (3) is a resistance sheet or a resistance wire; The second linear resistance element (6) is a resistance sheet or a resistance wire.

7. The printer paper box paper length and width detection mechanism according to claim 1, characterized in that: The first voltage end conductive element (1) is a conductive sheet or a conductive wire.

8. The printer paper box paper length and width detection mechanism according to claim 1, characterized in that: The grounding element (7) is a grounding sheet or a grounding wire.

9. The printer paper box paper length and width detection mechanism according to claim 1, characterized in that: The first voltage end conductive element (1), the first linear resistance element (3), the second voltage end conductive element (4), the second linear resistance element (6) and the grounding element (7) are all connected to the bottom plate of the paper box.

10. A printer, characterized in that: It comprises a printer paper box paper length and width detection mechanism as described in any one of claims 1-9.

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