Printers, copiers and paper kicking mechanisms thereof

Abstract

The present invention discloses a printer, a copier and a paper kicking mechanism thereof, wherein the paper kicking mechanism comprises a frame (1), a plurality of spur wheels (2) mounted on the frame (1) and a paper kicking wheel (3) matched with the spur wheels (2), wherein the frame (1) is rotatably mounted on a bracket, the spur wheels (2) are mounted on the frame (1) via a spur wheel shaft (5), the axis of each spur wheel (2) is parallel to the rotation axis of the frame (1), and the paper kicking wheel (3) is located below the spur wheel (2). The printer and the copier comprise the paper kicking mechanism. The printer, the copier and the paper kicking mechanism thereof provided by the present invention can solve the problem of improper paper output of the printer or the copier, and avoid wrinkles on the output paper.

Description

Technical Field

[0001] The invention relates to the technical field of design and manufacturing of printer and copier equipment, and in particular to a paper kicking mechanism for a printer or a copier, and a printer or a copier comprising the paper kicking mechanism. Background Art

[0002] Printers and copiers are commonly used office equipment and are widely used in people's daily production and life. Both printers and copiers can print or copy through inkjet or laser methods, and the paper conveying methods of the two are basically the same, and both use a paper kicking mechanism.

[0003] like Figure 1 As shown, the paper kicking mechanism currently used in printers or copiers generally includes a fixed frame 1' fixedly mounted on the printer or copier bracket, a plurality of mounting slots 4' opened on the front end surface of the fixed frame 1', a spring 5' fixedly mounted in the mounting slot 4', a spur wheel 2' mounted on the spring 5' and a paper kicking wheel 3' matched with the spur wheel 2', wherein the paper kicking wheel 3' is mounted below the spur wheel 2', and the paper kicking wheel 3' is fixedly mounted on a rotating shaft, and the rotating shaft is connected to a driving member. Figure 2 As shown, the spur wheel 2' presses the kicking wheel 3' under the elastic force of the spring 5'. When paper needs to be transported, the paper is transported between the spur wheel 2' and the kicking wheel 3', and the driving member drives the kicking wheel 3' to rotate, and the kicking wheel 3' and the spur wheel 2' cooperate with each other to kick the paper out of the machine.

[0004] Although the above-mentioned paper kicking mechanism can kick the paper out of the printer or the copier, there is a problem that the paper output direction is not correct or the output paper is wrinkled. Summary of the invention

[0005] The purpose of the present invention is to provide a paper kicking mechanism, which can solve the problem of improper paper output from a printer or a copier and avoid wrinkles on the output paper.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a paper kicking mechanism, including a frame, a plurality of spur wheels mounted on the frame and a paper kicking wheel cooperating with the spur wheels, the frame is rotatably mounted on a bracket, the spur wheels are mounted on the frame through spur wheel shafts, the axis of each spur wheel is parallel to the rotation axis of the frame, and the paper kicking wheel is located below the spur wheels.

[0007] In a preferred embodiment, the frame is rotatably mounted on the bracket via a rotating shaft, the rotating shaft is mounted at the rear end of the frame, and the spur wheel is mounted at the front end of the frame.

[0008] In a preferred embodiment, the number of the rotating shafts is two, the two rotating shafts are fixedly mounted at two ends of the frame and the two rotating shafts are coaxially arranged.

[0009] In a preferred embodiment, a mounting groove is provided on the front end surface of the frame, and the spur wheel is installed in the mounting groove through a spur wheel shaft.

[0010] In a preferred embodiment, a guide structure is provided on the left end surface and / or the right end surface of the frame, and the guide structure includes a guide groove capable of cooperating with a guide rod, and when the frame rotates, the guide rod slides in the guide.

[0011] In a preferred embodiment, the guide groove is located on the front side of the frame.

[0012] In a preferred embodiment, the guide groove is a long strip groove, and when the guide rod moves to the lower end of the guide groove and contacts the lower groove wall, the frame rotates to the upper dead center.

[0013] In a preferred embodiment, a pressure device is further installed on the upper surface of the frame, and the pressure device is a spring, and two ends of the spring are pressed on the upper surface of the frame and the bracket respectively.

[0014] In a preferred embodiment, the number of the springs is two, and the two springs are respectively located on the left front side and the right front side of the upper surface of the frame.

[0015] The difference between the present invention and the prior art lies in that the paper kicking mechanism provided by the present invention directly installs multiple spur wheels on the bracket through the spur wheel shaft instead of using springs to install the spur wheels, which can avoid the problem of uneven pressure of the spur wheels on the paper kicking wheel caused by installing the spur wheels on the fixed bracket through springs in the prior art. At the same time, by making the frame rotatably installed on the bracket of the printer or copier, and the axis of each spur wheel shaft is parallel to the rotation axis of the frame, the frame can use its gravity to make each spur wheel installed on the frame apply the same amount of pressure to the paper kicking wheel. When the paper kicking wheel rotates, the paper passing between the paper kicking wheel and the spur wheel is subjected to equal kicking force between each group of spur wheels and the paper kicking wheel. Therefore, the paper kicking mechanism provided by the present invention can solve the problem of improper paper output from the printer or copier and avoid wrinkles on the output paper.

[0016] Another object of the present invention is to provide a printer or a copier that can avoid the problems of paper being mis-ejected and paper being wrinkled.

[0017] In order to achieve the above object, the technical solution of the present invention is achieved as follows:

[0018] A printer or a copier comprises a paper kicking mechanism, wherein the paper kicking mechanism is the above-mentioned paper kicking mechanism.

[0019] The printer and the copier have the same technical advantages as the above-mentioned paper kicking mechanism over the prior art, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a paper kicking mechanism of an existing printer or copier;

[0021] Figure 2 yes Figure 1 A partial enlarged view of the paper kicking mechanism shown;

[0022] Figure 3 is a structural schematic diagram of a paper kicking mechanism according to a preferred embodiment of the present invention;

[0023] Figure 4 yes Figure 3 A schematic diagram of the structure of the paper-feeding kicking mechanism shown;

[0024] Figure 5 is a partial structural schematic diagram of a paper kicking mechanism according to another preferred embodiment of the present invention;

[0025] Figure 6 is a structural schematic diagram of a paper kicking mechanism according to another preferred embodiment of the present invention;

[0026] Description of reference numerals:

[0027] 1-frame; 2-spur wheel; 3-paper kicking wheel; 4-installation slot; 5-spur wheel shaft; 6-rotating shaft; 7-guide slot; 8-spring; 9-paper. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and embodiments. However, the use and purpose of these exemplary embodiments are only used to illustrate the present invention, and do not constitute any form of limitation on the actual protection scope of the present invention, nor do they limit the protection scope of the present invention to them.

[0029] In the present invention, some directional words are defined. Unless otherwise specified, the directional words used, such as "up, down, left, right", refer to the paper kicking mechanism provided by the present invention under normal use. "Inside and outside" refer to the inside and outside relative to the contour of each component itself. These directional words are used for ease of understanding and do not constitute a limitation on the scope of protection of the present invention.

[0030] In the present invention, when a component is said to be "fixed" to another component, it may be directly fixed to the other component, or there may be a component in the middle. When a component is said to be "connected" to another component, it may be directly connected to the other component or there may be a component in the middle. When a component is said to be "disposed on" another component, it may be directly disposed on the other component or there may be a component in the middle.

[0031] First of all, it should be noted that the problem of paper misalignment or paper wrinkles when a printer or copier is ejecting paper is generally believed in the prior art to be caused by equipment assembly tolerance or improper paper placement. However, the inventor has found through research that the pressure of the spur wheel on the paper kicking wheel in the prior art is provided by a spring, and due to assembly and other reasons, the spring force provided by each spring cannot be completely consistent, and generally has an error of 10% to 20%. When the error of the spring force provided by multiple springs is evenly distributed in the left and right directions, the paper ejection of the paper kicking mechanism is normal, but when the error of the spring force provided by multiple springs is concentrated on one side, it will cause the problem of paper misalignment or paper wrinkles.

[0032] Based on the above findings, the present invention provides a paper kicking mechanism for a printer or a copier, referring to Figure 3 As shown, the paper kicking mechanism of the basic embodiment provided by the present invention comprises a frame 1, a plurality of spur wheels 2 mounted on the frame 1 and a paper kicking wheel 3 matched with the spur wheels 2, wherein the frame 1 is rotatably mounted on a bracket, Figure 5 As shown, the spur wheel 2 is installed on the frame 1 through the spur shaft 5, the axis of each spur shaft 5 is parallel to the rotation axis of the frame 1, and the paper kicking wheel 3 is located below the spur wheel 2.

[0033] like Figure 3 As shown, in this embodiment, the shape of the frame 1 is roughly plate-shaped. As required, the frame 1 can also adopt various appropriate structures such as a frame structure. The frame 1 can be rotatably mounted on a bracket, wherein the bracket is a fixed part in a printer or a copier, and is used to install or support other components. The frame 1 can be rotatably mounted on the bracket in various ways, such as installing a rotating component on the bracket, and the frame 1 is mounted on the rotating component. Preferably, refer to Figure 3 As shown, the frame 1 is rotatably mounted on the bracket via a rotating shaft 6.

[0034] The number of the spur wheels 2 is multiple, and those skilled in the art can select a reasonable number of spur wheels 2 according to the width of the paper to be transported. For example, the number of the spur wheels 2 can be 6, 8 or 12, etc. Figure 3It is shown that 8 spur wheels 2 are installed on the frame 1. The axis of each spur wheel 2 is parallel to the axis of the rotating shaft of the frame 1, so that when the frame 1 rotates to the set position, each spur wheel 2 can press on the kicking wheel 3 and generate the same pressure on the kicking wheel 3. The cooperation between the kicking wheel 3 and the spur wheel 2 means that the spur wheel 2 can press on the kicking wheel 3, so that when the kicking wheel 3 rotates, the paper between the kicking wheel 3 and the spur wheel 2 can be kicked out. The kicking wheel 3 can be installed on a transmission shaft, and the transmission shaft is rotatably installed on a bracket. A driving member (such as a motor) is connected to the transmission shaft to drive the transmission shaft to rotate, thereby driving the kicking wheel 3 to rotate.

[0035] When the paper-kicking mechanism provided in the above embodiment is in use, since the spur wheel 2 installed on the frame 1 can rotate synchronously with the frame 1, the frame 1, under the action of its gravity, causes the spur wheel 2 installed thereon to press on the paper-kicking wheel 3 below at the same time. At this time, the pressure consistency of each spur wheel 2 on the paper-kicking wheel 3 is very good, such as Figure 4 As shown, when the paper 9 enters between the kicking wheel 3 and the spur wheel 2, the pressures exerted by the spur wheel 2 and the kicking wheel 3 on each position of the paper 9 are the same. As the kicking wheel 3 rotates, the kicking force exerted on the paper 9 is uniform and stable. Therefore, the kicking mechanism provided in this embodiment can solve the problem of improper paper output from a printer or copier and avoid wrinkles on the output paper.

[0036] In the present invention, the rotating shaft 6 is installed on the frame 1 and is kept parallel to the axis of the spur wheel 2. As required, the rotating shaft 6 can be installed at any position of the frame 1. Preferably, Figure 3 As shown, the rotating shaft 6 is installed at the rear end of the frame 1, and the spur wheel 2 is installed at the front end of the frame 1. In this embodiment, by installing the rotating shaft 6 and the spur wheel 2 at both ends of the frame 1 respectively, the moment generated by the gravity of the spur wheel 2 on the rotating shaft 6 is maximized, thereby reducing the possibility of the frame 1 rotating in the reverse direction during the operation of the paper kicking mechanism.

[0037] like Figure 3 As shown, more preferably, the number of the rotating shafts 6 is two, and the two rotating shafts 6 are fixedly mounted at both ends of the frame 1 and the two rotating shafts 6 are coaxially arranged. In this embodiment, two rotating shafts 6 are arranged and fixed at the left and right ends of the frame 1 respectively, which can effectively reduce the production cost compared with setting a rotating shaft that passes through the frame.

[0038] In the present invention, the spur wheel 2 can be directly mounted on the frame 1 through the spur shaft 5. In a preferred embodiment, Figure 3 , Figure 5As shown, a mounting groove 4 is provided on the front end surface of the frame 1, and the number of the mounting grooves 4 is the same as the number of the spur wheels 2. The spur wheels 2 are installed in the mounting grooves 4 through the spur wheel shafts 5. In this embodiment, by installing the spur wheels 2 in the mounting grooves 4 of the frame 1, when the frame 1 is installed on the bracket of a printer or a copier, the risk of uneven pressure of each spur wheel 2 on the paper kicking wheel 3 due to deformation or displacement caused by collision between the spur wheels 2 and other components can be reduced.

[0039] like Figure 5 As shown, in a further preferred embodiment of the present invention, a guide structure is provided on the left end face and / or the right end face of the frame 1, and the guide structure includes a guide groove 7 that can cooperate with the guide rod, and when the frame 1 rotates, the guide rod slides in the guide groove 7. Wherein the guide structure is provided on the left end face and / or the right end face of the frame 1, it means that the guide structure can be provided only on the left end face or the right end face of the frame 1, or the guide structure can be provided on both the left end face and the right end face of the frame 1. The guide rod cooperates with the guide groove 7, which means that when the guide rod slides in the guide groove 7, the guide rod can contact the two groove walls of the guide groove 7 to play a guiding role. In this embodiment, by providing a guide structure on the frame 1, the rotation of the frame 1 can be guided to ensure that the frame 1 can move according to the set trajectory, and avoid the situation where different spur wheels 2 exert inconsistent pressure on the paper kicking wheel 3 due to the installation deviation of the rotating shaft 6.

[0040] On the basis of the above embodiment, it is further preferred that the guide groove 7 is located at the front side of the frame 1. Since the heavier spur wheel 2 and the spur wheel shaft 5 on the frame 1 are located at the front side of the frame 1, and the rotating shaft 6 is located at the rear side of the frame 1, when the spur wheel 2 is unevenly distributed on the front side of the frame 1, it will cause the overall center of gravity of the frame 1 to be biased to the left or right, thereby generating a force on the rotating shaft 6 at both ends of the frame 1. After the paper kicking mechanism is used for a long time, it may cause the rotation axis of the frame 1 to deflect, thereby affecting the consistency of the pressure of the spur wheel 2 on the paper kicking wheel 3. In this embodiment, by setting the guide groove 7 on the front side of the frame 1, the guide groove 7 is closer to the center of gravity of the frame 1, which can provide better protection for the rotating shaft 6.

[0041] In the present invention, the guide slot 7 is preferably in the shape of a long strip, and when the guide rod moves to the lower end of the guide slot 7 and contacts the lower slot wall, the frame 1 rotates to the top dead center. By adopting the above structure, the rotation range of the frame 1 can be limited.

[0042] like Figure 6As shown, in another preferred embodiment of the present invention, a pressure device is also installed on the upper surface of the frame 1, and the pressure device is a spring 8, and the two ends of the spring 8 are pressed on the upper surface of the frame 1 and the bracket respectively. In this embodiment, by installing the pressure device on the frame 1, the frame 1 can provide sufficient pressure when the weight of the frame 1 is small, thereby ensuring the pressure of the spur wheel 2 on the paper kicking wheel 3. When the pressure device is used, the frame 1 can be made of lightweight materials, thereby reducing the dead weight of the paper kicking mechanism while ensuring effective paper kicking.

[0043] More preferably, if Figure 6 As shown, in order to make the force on the frame 1 more uniform, the number of the springs 8 is two, and the two springs 8 are respectively located on the left front side and the right front side of the upper surface of the frame 1.

[0044] Based on the above technical concept, the present invention further provides a printer and a copier, both of which include the paper kicking mechanism described in the above embodiment.

[0045] In summary, in the technical solution provided by the present invention, the pressure of the spur wheel 2 on the paper kicking wheel 3 is provided by gravity, and the pressure consistency of each spur wheel 2 is very good, so that the paper kicking force is very stable, avoiding the situation that the paper is not discharged correctly or the paper is wrinkled. At the same time, since the spring installed at the spur wheel 2 is removed, the cost of parts and the installation time are reduced, which has a very large economic benefit for products with large output such as printers or copiers.

[0046] The order of the above implementation modes is only for the convenience of description and does not represent the advantages or disadvantages of the implementation modes.

[0047] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned implementation modes, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned implementation modes, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various implementation modes of the present invention.

Claims

1. A paper kicking mechanism, comprising a frame (1), a plurality of spur wheels (2) mounted on the frame (1), and a paper kicking wheel (3) cooperating with the spur wheels (2), characterized in that The frame (1) is rotatably mounted on a bracket, the spur wheel (2) is mounted on the frame (1) via a spur wheel shaft (5), the axis of each spur wheel (2) is parallel to the rotation axis of the frame (1), and the paper kicking wheel (3) is located below the spur wheel (2); A mounting groove (4) is provided on the front end surface of the frame (1), and the spur wheel (2) is mounted in the mounting groove (4) via a spur wheel shaft (5); A guide structure is provided on the left end surface and / or the right end surface of the frame (1), the guide structure comprising a guide groove (7) capable of cooperating with a guide rod, and when the frame (1) rotates, the guide rod slides in the guide groove (7); the guide groove (7) is located at the front side of the frame (1); when the guide rod moves to the lower end of the guide groove (7) and contacts the lower groove wall, the frame (1) rotates to the top dead center; A pressure device, the pressure device is a spring (8), the two ends of the spring (8) are pressed on the upper surface of the frame (1) and the bracket respectively; the number of the springs (8) is two, and the two springs (8) are respectively located on the left front side and the right front side of the upper surface of the frame (1); The frame (1) relies on its gravity to enable each spur wheel (5) installed on the frame (1) to exert the same amount of pressure on the paper-kicking wheel (3).

2. The paper kicking mechanism according to claim 1, characterized in that: The frame (1) is rotatably mounted on a bracket via a rotating shaft (6), the rotating shaft (6) is mounted at the rear end of the frame (1), and the spur wheel (2) is mounted at the front end of the frame (1).

3. The paper kicking mechanism according to claim 2, characterized in that: The number of the rotating shafts (6) is two, and the two rotating shafts (6) are fixedly mounted at two ends of the frame (1) and are coaxially arranged.

4. A printer or a copier, comprising a paper kicking mechanism, characterized in that: The paper kicking mechanism is the paper kicking mechanism according to any one of claims 1 to 3.

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