Printer paper limiting mechanism and printer

Abstract

The printer paper limiting mechanism comprises a main frame body provided with a paper feeding channel, the main frame body is provided with a telescopic hole, the telescopic hole is located on the upper side and / or the lower side of the paper feeding channel, the telescopic hole is communicated with the paper feeding channel, a paper limiting sheet is installed in the telescopic hole, and the paper limiting sheet is connected with the main frame body. The paper limiting piece can stretch out and draw back relative to the telescopic hole, when the paper limiting piece stretches out of the paper feeding channel, the paper feeding channel is partially blocked and limited, and when the paper limiting piece completely retracts or partially retracts into the telescopic hole, paper limiting of the paper feeding channel is relieved. Compared with the prior art that the size of the paper feeding channel is adjusted through displacement of a sliding groove and the paper limiting piece in the direction perpendicular to the paper feeding direction of the paper feeding channel, the mode that the paper limiting piece is inserted into or pulled out of the telescopic hole to change the size of the paper feeding channel is adopted, a huge transverse displacement space does not need to be reserved, and occupied space is reduced. And the size of the main frame body is reduced, so that the size of the printer is further reduced.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, and in particular to a paper limiting mechanism for a printer and a printer. Background Technology

[0002] Traditional printer paper limiters are typically designed to accommodate various paper types. They consist of a movable paper limiter and a sliding groove located on the upper or lower side of the paper feed path within the printer's main frame. The groove's axis is perpendicular to the paper feed direction. To accommodate different paper types, the paper limiter can slide freely within the groove and stop at any position, achieving stepless adjustment. However, in practice, only two types of paper are typically used. Since the paper limiter needs to move, sufficient space must be provided on the main frame. This results in the existing limiter structure occupying too much space, preventing further reduction in printer size, as illustrated in patent document CN 218257370 U. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this utility model is to provide a paper limiting mechanism for a printer and a printer.

[0004] This utility model is implemented using the following method: A printer paper limiting mechanism includes a main frame body with a paper feed channel. The main frame body has a telescopic hole located on the upper and / or lower side of the paper feed channel. The telescopic hole is connected to the paper feed channel. A paper limiting piece is installed in the telescopic hole. The paper limiting piece can extend and retract relative to the telescopic hole. When the paper limiting piece extends into the paper feed channel, the paper feed channel is partially blocked. When the paper limiting piece is fully retracted or partially retracted into the telescopic hole, the paper feed channel is released from paper limiting.

[0005] Preferably, the telescopic hole has one or more first positioning parts, and the paper limiting piece has a second positioning part that cooperates with it, for fixing the paper limiting piece in a designated position.

[0006] Preferably, the second positioning part is an elastic arm provided on the side of the limiting paper sheet, and the first positioning part is a slot provided on the inner wall of the telescopic hole, and the elastic arm can elastically deform and be inserted into the slot.

[0007] Preferably, the elastic arm is composed of a rib on one side surface of the limiting paper sheet and a groove on the other side surface opposite to the rib.

[0008] Preferably, there are two or more of the ribs and the grooves.

[0009] Preferably, the first positioning part includes multiple slots, the cross-section of the telescopic hole is rectangular, and the slots are formed on two opposite surfaces of the telescopic hole, with the slots on the two opposite surfaces being symmetrically arranged.

[0010] Preferably, the telescopic hole consists of two sections, one section located on the upper side of the paper feed channel and the other section located on the lower side of the paper feed channel. The paper limiting piece is inserted from the upper section of the paper feed channel, and the first positioning part is located in the upper section of the paper feed channel.

[0011] Preferably, a pressing piece is provided at the end of the paper limiting sheet opposite to the paper feeding channel.

[0012] Preferably, the paper feed channel is centered, and two telescopic holes are provided, symmetrically arranged along the center line of the paper feed channel; or, the paper feed channel is aligned on one side, and one telescopic hole is provided, spaced apart from the aligned side of the paper feed channel.

[0013] A printer is provided with a printer paper limiting mechanism as described above.

[0014] The beneficial effects of this utility model are as follows: This utility model provides a paper limiting mechanism and a printer. Compared with the prior art, this utility model has at least the following technical effects: 1. Compared with the original method of adjusting the size of the paper feed channel by vertical displacement of the slide and the paper limiting piece in the paper feed direction, this utility model uses the method of changing the size of the paper feed channel by inserting or removing the paper limiting piece through the telescopic hole. This eliminates the need to reserve a large lateral displacement space, thus reducing the space occupied and allowing for a reduction in the size of the main frame, thereby further reducing the size of the printer. 2. The setting of the first positioning part and the second positioning part facilitates fixing the paper limiting piece in a designated position, that is, fixing the paper limiting piece after it is inserted into the paper feed channel, and fixing it after it is removed from the paper feed channel, avoiding interference with paper feeding. 3. The second positioning part of the paper limiting piece is an elastic arm, and the first positioning part of the telescopic hole is a slot, so that the elastic arm can deform and move out of the slot after being subjected to external force, and can also move and then lock into the slot to achieve the positioning function. 4. The raised ribs and the grooves on the back together form an elastic arm, allowing the portion of the paper limiter inserted into the telescopic hole to undergo elastic deformation. 5. Two or more raised ribs or grooves are provided, meaning there are two elastic deformation parts, one above and one below, enabling positioning in two positions: positioning and releasing the paper limiter. 6. The first positioning part includes multiple slots, symmetrically arranged, so that the paper limiter does not need to be oriented; it can be stopped by inserting it into the telescopic hole from either side. 7. The telescopic hole penetrates the upper and lower surfaces of the paper feed channel. This provides better support for the paper limiter when its two ends are located at the upper and lower ends of the telescopic hole, preventing excessive deformation during paper feeding. 8. A pressing tab is provided at the upper end of the paper limiter for easy user operation and to prevent the paper limiter from falling completely into the telescopic hole and becoming impossible to remove. 9. The installation positions of the telescopic and paper limiters can be flexibly adjusted according to the printer's paper feed alignment to adapt to product requirements. Attached Figure Description

[0015] Figure 1 This is a schematic diagram showing the components of a printer paper limiting mechanism according to this utility model.

[0016] Figure 2 This is a schematic diagram of the paper limiting sheet of a printer paper limiting mechanism according to this utility model.

[0017] Figure 3 This is a front view of the paper limiting plate of a printer paper limiting mechanism according to this utility model.

[0018] Figure 4 This is a partially enlarged schematic diagram of the paper limiting plate of a printer paper limiting mechanism of this utility model being inserted into the telescopic hole.

[0019] Figure 5 This is a partially enlarged schematic diagram of the paper feed channel of a printer paper limiting mechanism of this utility model in its maximum width state.

[0020] Figure 6 This is a partially enlarged schematic diagram of the paper feed channel of a printer paper limiting mechanism of this utility model in a narrow width state.

[0021] The following are the reference numerals: 1. Paper feed channel; 2. Main frame body; 3. Telescopic hole; 31. First positioning part; 4. Paper limiting piece; 41. Raised rib; 42. Groove; 43. Pressing piece. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] Please see Figures 1 to 6 A paper limiting mechanism for a printer includes a main frame body 2 with a paper feed channel 1. The main frame body 2 has a telescopic hole 3 located above and / or below the paper feed channel 1, and the telescopic hole 3 communicates with the paper feed channel 1. A paper limiting piece 4 is installed in the telescopic hole 3. The paper limiting piece 4 can extend and retract relative to the telescopic hole 3. When the paper limiting piece 4 extends into the paper feed channel 1, the paper feed channel 1 is partially blocked. When the paper limiting piece 4 is fully or partially retracted into the telescopic hole 3, the paper feed channel 1 is released from paper limiting (as long as the distance between the paper limiting piece 4 and the bottom surface of the paper feed channel 1 is greater than the paper thickness). Compared to the original method of adjusting the size of the paper feed channel 1 by vertical displacement of the paper feed channel 1 using a slide groove and the paper limiting piece 4 in the paper feed direction, this invention uses the method of changing the size of the paper feed channel 1 by inserting or removing the paper limiting piece 4 through the telescopic hole 3. This eliminates the need for a large lateral displacement space, reducing the space occupied and allowing for a smaller main frame body 2, thereby further reducing the size of the printer. The printer top cover is located above the paper feed channel 1, and the printer base is located below it.

[0024] Please see Figures 1 to 6 Preferably, the telescopic hole 3 has one or more first positioning parts 31, and the paper limiting piece 4 has a cooperating second positioning part for fixing the paper limiting piece 4 in a designated position. The provision of the first positioning part 31 and the second positioning part facilitates fixing the paper limiting piece 4 in a designated position, that is, fixing the paper limiting piece 4 after it is inserted into the paper feeding channel 1, and fixing the paper limiting piece 4 after it is removed from the paper feeding channel 1, thus avoiding interference with paper feeding.

[0025] Please see Figures 1 to 6Preferably, the second positioning part is an elastic arm disposed on the side of the limiting paper sheet 4, and the first positioning part 31 is a slot disposed on the inner wall of the telescopic hole 3. The elastic arm can elastically deform and be inserted into the slot. The second positioning part of the limiting paper sheet 4 is an elastic arm, and the first positioning part 31 of the telescopic hole 3 is a slot, so that the elastic arm can deform and move out of the slot after being subjected to external force, and can also be inserted into the slot after moving, so as to achieve the positioning function.

[0026] Please see Figures 1 to 6 Preferably, the elastic arm consists of a raised rib 41 on one side surface of the paper limiting sheet 4 and a groove 42 on the other side surface opposite to the raised rib 41. The raised rib 41 and the groove 42 on the back together constitute the elastic arm, allowing the portion of the paper limiting sheet 4 inserted into the telescopic hole 3 to undergo elastic deformation.

[0027] Please see Figures 1 to 6 Preferably, there are two or more of the protruding ribs 41 and the grooves 42. Having two or more protruding ribs 41 or grooves 42 means having two elastic deformation parts, one above the other, which can achieve positioning at two positions: positioning and releasing the paper limit. Alternatively, the telescopic hole 3 can have two longitudinal slots, and only one elastic arm.

[0028] Please see Figure 1 , Figures 5 to 6 Preferably, the first positioning part 31 includes multiple slots, and the telescopic hole 3 has a rectangular cross-section. The slots are formed on two opposite surfaces of the telescopic hole 3, and the slots on the opposite surfaces are symmetrically arranged. The first positioning part 31 includes multiple slots, which are symmetrically arranged so that the paper sheet 4 does not need to be oriented when used; it can be stopped by inserting it into the telescopic hole 3 from either side. More preferably, two slots are spaced apart in the longitudinal direction on each surface.

[0029] Please see Figure 1 , Figures 5 to 6 Preferably, the telescopic hole 3 consists of two sections, one located on the upper side of the paper feed channel 1 and the other on the lower side of the paper feed channel 1. The paper limiting piece 4 is inserted through the upper section of the paper feed channel 1, and the first positioning part 31 is located in the upper section of the paper feed channel 1. The telescopic hole 3 penetrates the upper and lower surfaces of the paper feed channel 1, so that when the two ends of the paper limiting piece 4 are located at the upper and lower sections of the telescopic hole 3 respectively, the paper limiting piece 4 can have better force support and avoid excessive deformation during paper limiting.

[0030] Please see Figure 1 Figure 6Preferably, a pressing piece 43 is provided at the end of the paper limiting piece 4 that is away from the paper feeding channel 1. The pressing piece 43 is provided at the upper end of the paper limiting piece 4 to facilitate user operation and to prevent the paper limiting piece 4 from falling completely into the telescopic hole 3 and being unable to be pulled out.

[0031] Preferably, the paper feed channel 1 is centrally located for paper feeding, and two telescopic holes 3 are provided, symmetrically arranged along the center line of the paper feed channel 1, such as... Figure 1 , Figure 5 , Figure 6 As shown; or, the paper feed channel 1 is aligned with paper feed on one side, and one telescopic hole 3 is provided, spaced apart from the aligned side of the paper feed channel 1. The installation positions of the telescopic hole and the paper limiting plate 4 can be flexibly adjusted according to the printer's paper feed alignment position to adapt to product requirements. Of course, more telescopic holes 3 and paper limiting plates 4 can be provided according to the number and types of applicable paper materials to accommodate a wider variety of paper types.

[0032] A printer is provided with the paper limiting mechanism described above. The paper limiting piece 4 is inserted through the telescopic hole 3 into the paper feed channel 1. Compared with the original paper feed channel 1, which moves laterally, the telescopic hole 3 and the paper limiting piece 4 are both thinner and do not take up too much space.

[0033] The working principle of this utility model is as follows:

[0034] Taking the adaptation to two sizes of paper as an example, when it is necessary to adapt to the largest size of paper, the paper limiting piece 4 is pushed outwards towards the telescopic hole 3, so that the paper feeding width of the paper feeding channel 1 is at its maximum. At this time, the elastic arm at the top of the paper limiting piece 4 cooperates with the slot at the top of the telescopic hole 3. When it is necessary to adapt to the feeding of small-sized paper, the pressing piece 43 is pressed to push the paper limiting piece 4 into the paper feeding channel 1. During the pushing process, the elastic arm deforms. When the elastic arm at the top of the paper limiting piece 4 moves down a certain distance and gets stuck in the slot at the bottom, it means that the paper limiting piece 4 is pressed in place, so that the paper feeding piece blocks part of the paper feeding channel 1. At this time, the paper feeding width of the paper feeding channel 1 is the width of the small-sized paper.

[0035] Several points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0036] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0037] Finally, the above description is only a preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions that fall within the scope of the present utility model are protected by the present utility model.

[0038] It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of this utility model should also be considered within the scope of protection of this utility model.

Claims

1. A printer paper limiting mechanism, comprising a main frame body with a paper feed channel, characterized in that: The main frame body is provided with a telescopic hole, which is located on the upper and / or lower side of the paper feed channel. The telescopic hole is connected to the paper feed channel. A paper limiting piece is installed in the telescopic hole. The paper limiting piece can extend and retract relative to the telescopic hole. When the paper limiting piece extends into the paper feed channel, the paper feed channel is partially blocked by the paper limiting piece. When the paper limiting piece is fully retracted or partially retracted into the telescopic hole, the paper feed channel is released from the paper limiting piece.

2. The printer paper limiting mechanism according to claim 1, characterized in that: The telescopic hole has one or more first positioning parts, and the paper limiting piece has a second positioning part that cooperates with it, for fixing the paper limiting piece in a designated position.

3. A printer paper limiting mechanism according to claim 2, characterized in that: The second positioning part is an elastic arm provided on the side of the limiting paper sheet, and the first positioning part is a slot provided on the inner wall of the telescopic hole. The elastic arm can elastically deform and be inserted into the slot.

4. A printer paper limiting mechanism according to claim 3, characterized in that: The elastic arm consists of a rib on one side of the paper limiting sheet and a groove on the other side of the paper limiting sheet opposite the rib.

5. A printer paper limiting mechanism according to claim 4, characterized in that: The ribs and grooves are provided in two or more.

6. A printer paper limiting mechanism according to claim 3, characterized in that: The first positioning part includes multiple slots, the cross-section of the telescopic hole is rectangular, and the slots are formed on two opposite surfaces of the telescopic hole, with the slots on the two opposite surfaces being symmetrically arranged.

7. A printer paper limiting mechanism according to claim 2, characterized in that: The telescopic hole consists of two sections, one located on the upper side of the paper feed channel and the other located on the lower side of the paper feed channel. The paper limiting piece is inserted through the upper section of the paper feed channel, and the first positioning part is located in the upper section of the paper feed channel.

8. A printer paper limiting mechanism according to claim 1, characterized in that: The end of the paper limiting sheet opposite to the paper feeding channel is provided with a pressing piece.

9. A printer paper limiting mechanism according to claim 1, characterized in that: The paper feed channel is centered for paper feeding, and two telescopic holes are provided, symmetrically arranged along the center line of the paper feed channel; or, the paper feed channel is aligned on one side for paper feeding, and one telescopic hole is provided, spaced apart from the aligned side of the paper feed channel.

10. A printer, characterized in that: The printer is equipped with a paper limiting mechanism as described in any one of claims 1-9.

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