Paper feeding device and image forming equipment

Abstract

The utility model discloses a paper feeding device which comprises a support, a paper feeding mechanism and a paper feeding mechanism. The paper feeding tray is rotatably connected with the bracket; the limiting mechanism is arranged on the paper feeding tray and abuts against the limiting part; the paper feeding tray drives the limiting mechanism to move in the limiting part, so that the limiting mechanism changes the position abutting against the limiting part, and the opening and closing angle of the paper feeding tray on the support is changed. The limiting mechanism abuts against the other position of the limiting part so that the paper feeding tray can be positioned, the opening and closing angle of the paper feeding tray relative to the support can be increased, and therefore the opening and closing angle between the paper feeding tray and the paper discharging tray is increased, the relative space between the paper feeding tray and the paper discharging tray is larger, and when the paper jam situation occurs, the paper jam phenomenon is avoided. A user can lift up the paper feeding tray, a larger space of the paper discharging tray or the paper discharging bearing area can be exposed, and the user can determine the position of the clamped paper and take out the clamped paper more conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic imaging, and particularly relates to a paper feeding device and an image forming apparatus. Background Art

[0002] At present, image forming apparatuses such as printers and copiers are provided with an automatic document feeder (ADF). A user can place printing media such as paper on a paper feed tray of the automatic document feeder, and the image forming apparatus can achieve automatic paper feeding to complete operations such as copying and scanning.

[0003] During the process of the ADF module automatically feeding paper, a paper pickup module picks up paper from the paper feed tray, and the paper enters the paper feed path of the ADF module. The paper is moved by a conveying roller in the paper feed path, reaches a paper discharge roller, and is finally moved by the paper discharge roller away from the paper feed path and falls onto a paper discharge tray or a specific paper discharge receiving area. During the entire paper feeding process, the paper feeding device moves the paper by the roller through friction from paper pickup to intermediate conveyance to paper discharge. Therefore, paper specifications (material thickness, humidity), the degree of paper skew (including misalignment during conveyance or wrinkles and deformation of the paper itself), or the situation where components related to conveyance are displaced or worn due to long-term use may cause paper jams.

[0004] When a paper jam occurs at the paper discharge roller in the downstream of the paper feed path, since the paper discharge roller remains in a tightly engaged state, at this time, the user can only forcibly pull out the jammed paper at the paper discharge tray or the paper discharge receiving area, which is not only laborious but also likely to damage the paper. In addition, the space between the paper discharge tray and the paper discharge receiving area is small, which is inconvenient for the user to operate. Summary of the Utility Model

[0005] The paper feeding device and the image forming apparatus of the utility model can effectively solve the problem that it is not conducive to taking out the jammed paper after a paper jam occurs in the existing paper feeding device.

[0006] According to one aspect of the utility model, a paper feeding device is provided, including:

[0007] A bracket, the bracket is provided with a limiting portion;

[0008] A paper feed tray, the paper feed tray is rotatably connected to the bracket;

[0009] A limiting mechanism, the limiting mechanism is arranged on the paper feed tray and abuts against the limiting portion;

[0010] By driving the limiting mechanism to move in the limiting portion through the paper feed tray, the limiting mechanism changes the position where it abuts against the limiting portion, so as to change the opening and closing angle of the paper feed tray on the bracket.

[0011] In some embodiments, the limiting mechanism includes a first support portion and a second support portion, and there is a constant distance between the first support portion and the second support portion. The paper feed tray drives the first support portion and the second support portion to move synchronously to change the position where the first support portion abuts against the limiting portion. Thus, the first support portion and the second support portion are used to abut against the limiting portion to support and lock the paper feed tray, and the first support portion is used to position the opening and closing angle of the paper feed tray.

[0012] In some embodiments, the limiting portion includes a first guiding hole and a second guiding hole, and the first support portion and the second support portion are respectively movably disposed in the first guiding hole and the second guiding hole. Thus, the first support portion moves in the first guiding hole to change the abutting position and position the paper feed tray, and the second support portion abuts against the second guiding hole to support the paper feed tray.

[0013] In some embodiments, the first guiding hole has a first hole end and a second hole end, and the paper feed tray drives the first support portion to move from the first hole end to abut against and be limited by the second hole end to increase the opening and closing angle of the paper feed tray on the bracket. Thus, the first hole end and the second hole end are respectively the initial end and the end end when the paper feed tray is opened, and the first support portion can also be reset by driving the paper feed tray.

[0014] In some embodiments, the angle corresponding to the arc length formed between the first hole end and the second hole end is equal to the increased opening and closing angle of the paper feed tray on the bracket. Thus, the first guiding hole is related to the opening and closing angle of the paper feed tray.

[0015] In some embodiments, an elastic member is further included. The elastic member is connected to the first support portion or the second support portion, and drives the first support portion to abut against the second hole end through the elastic force of the elastic member to change the opening and closing angle of the paper feed tray on the bracket. Thus, the elastic member is used to provide the power for the limiting mechanism to abut against the limiting portion to ensure that the limiting mechanism can smoothly abut against the limiting portion after movement.

[0016] In some embodiments, the limiting mechanism is integrally formed with the paper feed tray, and the paper feed tray drives the first support portion to move around the second support portion. Thus, it is beneficial to simplify the structures of the paper feed tray and the limiting mechanism.

[0017] In some embodiments, the limiting mechanism and the paper feed tray are of a split design. The paper feed tray is provided with a tray groove, and the limiting mechanism is movably arranged in the tray groove. The paper feed tray rotates around the bracket through a rotating shaft to drive the first support portion to change its position abutting against the limiting portion. Thus, it is beneficial to improve the stability when the paper feed tray is lifted and rotated, and avoid the situation of shaking when the paper feed tray is lifted due to the gap of the limiting portion.

[0018] On the other hand, an image forming apparatus is provided, including the above paper feeding device.

[0019] Compared with the prior art, the paper feeding device and the image forming apparatus of the present utility model have the following

[0020] Advantages:

[0021] In this application, a limiting mechanism is provided on the paper feed tray. The limiting mechanism can abut against the limiting portion on the bracket. When the paper feed tray rotates relative to the bracket, it can drive the limiting mechanism to move, so that the position where the limiting mechanism abuts against the limiting portion changes. Then, the paper feed tray is positioned by abutting against another position of the limiting mechanism to increase the opening and closing angle of the paper feed tray relative to the bracket, thereby increasing the opening and closing angle between the paper feed tray and the paper discharge tray. Therefore, the relative space between the paper feed tray and the paper discharge tray is larger. When paper jams occur, the user can lift the paper feed tray and easily take out the jammed paper. At the same time, as the paper feed tray is lifted, a larger space of the paper discharge tray or the paper discharge receiving area can be exposed, which is more convenient for the user to determine the position of the jammed paper and take out the jammed paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the image forming apparatus of the present utility model;

[0023] Figure 2 is a schematic structural diagram of the paper feeding device in the present utility model;

[0024] Figure 3 is a partial enlarged side view of the paper feeding device in Embodiment 1 of the present utility model;

[0025] Figure 4 is a reference diagram of the open state of the paper feed tray of the paper feeding device in Embodiment 1 of the present utility model;

[0026] Figure 5 is Figure 4 an enlarged view of part A in;

[0027] Figure 6 is a partial enlarged side view of the paper feed tray in Embodiment 2;

[0028] Figure 7Reference diagram of the cooperation between the paper feed tray and the bracket when the paper feed tray is opened in Embodiment 2;

[0029] Figure 8 Partial enlarged side view of the paper feed tray in Embodiment 3;

[0030] Figure 9 Reference diagram of the cooperation between the paper feed tray and the bracket when the paper feed tray is opened in Embodiment 3.

[0031] In the figure: 100 - image forming device, 1 - device main body, 2 - image reading device, 20 - paper feed device, 21 - bracket, 22 - paper feed tray, 221 - first clamping part, 222 - second clamping part, 223 - sensing part, 23 - paper discharge tray, 24 - elastic part, 251 - first support part, 252 - second support part, 253 - connecting rod, 211 - first guiding hole, 212 - second guiding hole, 213 - first hole end, 214 - second hole end, 26 - tray groove, 27 - rotating shaft. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0033] It should be noted that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0034] The present utility model relates to a paper feed device and an image forming device. The paper feed device is used for conveying and discharging printing media such as paper and can be installed in the image forming device. The image forming device includes a printer, a copier, etc., and is used to achieve automatic paper feeding to complete operations such as copying / scanning.

[0035] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0036] Figure 1 Schematically shows an image forming device 100 according to an embodiment of the present utility model. As Figure 1As shown, the image forming apparatus 100 includes a device main body 1 and an image reading device 2. The image reading device 2 is mounted on the device main body 1. The image reading device 2 is provided with a paper feeding device 20. A sheet of paper is carried on the paper feeding device 20 and is subjected to relevant document processing operations by a processing module (not shown) provided therein. For convenience of description, the length direction of the paper feeding device 20 is defined as the X-axis direction, the width direction of the paper feeding device 20 is defined as the Y-axis direction, and the height direction of the paper feeding device 20 is defined as the Z-axis direction. The three-axis directions are mutually orthogonal.

[0037] As Figure 2 shown, the paper feeding device 20 includes a bracket 21, a paper picking device, conveying rollers, a paper discharging roller, a paper feeding tray 22, and a paper discharging tray 23. The structure of the bracket 21 is uniformly distributed on both sides in the Y-axis direction of the paper feeding device 20 and is used to support the paper feeding tray 22 and the paper discharging tray 23. The paper picking device (not shown) is used to pick up the paper on the paper feeding tray 22 to the paper feeding path. A plurality of conveying rollers (not shown) are provided and are used to move and convey the paper along the paper feeding path. The paper feeding tray 22 is rotatably provided on the bracket 21. The paper feeding tray 22 is used to place the paper to be processed. The paper feeding tray 22 is provided with a sensing member 223, a first clamping portion 221, a second clamping portion 222, and a driving gear (not shown). The first clamping portion 221 and the second clamping portion 222 are movably provided on the paper feeding tray 22 through a slide bar or a rack structure. The first clamping portion 221 and the second clamping portion 222 are mirror-symmetrical structures and can approach or separate from each other. For example, the first clamping portion 221 and the second clamping portion 222 can be engaged with the driving gear through a rack structure. When a user applies a force to the first clamping portion 221 (or the second clamping portion 222), the second clamping portion 222 (or the first clamping portion 221) can be driven simultaneously, so that the first clamping portion 221 and the second clamping portion 222 approach or separate from each other relatively in the Y-axis direction on the paper feeding tray 22, thereby adapting to papers of different sizes. The sensing member 223 is provided on the paper feeding tray 22 and the paper discharging tray 23 and is used to sense the paper placed on the paper feeding tray 22 and the paper discharging tray 23, so as to send the signal of the current state of the paper feeding tray 22 and the paper discharging tray 23 to the image forming apparatus 100. A sensing member 223 for sensing the positions of the first clamping portion 221 and the second clamping portion 222 is also provided in the paper feeding tray 22. The paper discharging roller (not shown) is used to move the paper out of the paper feeding path and finally output it to the paper discharging tray 23. The paper discharging tray 23 is used to support the processed paper and is located below the paper feeding tray 22 (-Z-axis side).

[0038] Embodiment 1

[0039] As Figure 3 、 Figure 4As shown, in order to solve the problem that it is not easy to take out the jammed paper in the existing paper feeding device 20, in this embodiment, the paper feeding device 20 further includes a limiting mechanism and an elastic member 24. The limiting mechanism is arranged on the side wall of the paper feeding tray 22 in the Y-axis direction. In this embodiment, the limiting mechanism and the paper feeding tray 22 are integrally formed. Specifically, the limiting mechanism includes a first supporting portion 251 and a second supporting portion 252. The first supporting portion 251 and the second supporting portion 252 adopt a cylindrical shaft structure, and their sizes can be designed according to actual situations. The first supporting portion 251 is closer to the end of the paper feeding tray 22 on the +X-axis side, and is used to position the flipping (lifting) amplitude of the paper feeding tray 22, that is, to position the opening and closing angle of the paper feeding tray 22 on the bracket 21. The second supporting portion 252 serves as the fulcrum part for the rotation support of the paper feeding tray 22, that is, the paper feeding tray 22 flips around the second supporting portion 252. The second supporting portion 252 is located on the -X-axis side of the first supporting portion 251. Both the first supporting portion 251 and the second supporting portion 252 have a supporting effect on the paper feeding tray 22. Among them, the bracket 21 is provided with a limiting portion, and the limiting portion is specifically a hole groove structure. In this embodiment, the limiting portion can adopt a through hole structure. Optionally, in order to ensure the balance during the flipping of the paper feeding tray 22, the limiting portions are arranged on both sides of the bracket 21 in the Y-axis direction.

[0040] The limiting portion includes a first guiding hole 211 and a second guiding hole 212. The first supporting portion 251 and the second supporting portion 252 are respectively movably inserted and supported in the first guiding hole 211 and the second guiding hole 212. The first guiding hole 211 has a partial arc structure. The first guiding hole 211 has a first hole end 213 and a second hole end 214. The first hole end 213 and the second hole end 214 are the upstream end (end) and the downstream end (beginning end) respectively. The path between the first hole end 213 and the second hole end 214 is the movement path of the first supporting portion 251, and this path is a non-complete arc path. The first supporting portion 251 can abut against both the first hole end 213 and the second hole end 214. The second guiding hole 212 is not a complete circular through hole and can adopt an oval hole. Since the distance between the first supporting portion 251 and the second supporting portion 252 is constant, so that the second supporting portion 252 can move a short distance in the second guiding hole 212, enabling the second supporting portion 252 to drive the first supporting portion 251 to cooperate and transition with each other. Therefore, when the first supporting portion 251 moves from the first hole end 213 to the second hole end 214, it can abut and be positioned at the second hole end 214. This process is driven by the paper feeding tray 22, that is, the flipping and lifting action of the paper feeding tray 22, so as to increase the opening and closing angle of the paper feeding tray 22 on the bracket 21.

[0041] The elastic member 24 is preferably a spring. One end of the elastic member 24 can abut against the second support portion 252, and the other end can be arranged on the bracket 21 or the paper feed tray 22. It is mainly used to generate an elastic force to push the second support portion 252, so that the second support portion 252 drives the first support portion 251 to abut against the second hole end 214, forming the function of abutting and positioning (or clamping) between the first support portion 251 and the second hole end 214.

[0042] Working principle: As Figure 4 shown, since the distance between the first support portion 251 and the second support portion 252 is constant, this constant distance is marked as R. The process of the axis of the first support portion 251 moving from the first hole end 213 to the second hole end 214 is marked with 4 points: namely a, b, c, and d. The second support portion 252 has two points during this process: namely O1 and O2. When the paper feed tray 22 is not flipped up, the first support portion 251 abuts against the first hole end 213. At this time, the second support portion 252 is at the position of O1, and the distance between the first support portion 251 and the second support portion 252 is R1. When flipping the paper feed tray 22 to drive the first support portion 251 and the second support portion 252 to move, the first support portion 251 moves to the position of point b, and the second support portion 252 gradually moves along the second hole end 214. At this time, the moving distance of the second support portion 252 is short (not obvious). When the paper feed tray 22 continues to flip to drive the first support portion 251 and the second support portion 252 to move, the first support portion 251 moves to the position of point c. At this time, the movement state of the second support portion 252 in the second hole end 214 is the most obvious. The second support portion 252 is located at the position of O2, and the second support portion 252 compresses the elastic member 24, increasing the elastic potential energy of the elastic member 24. Mark the distance between the first support portion 251 and the second support portion 252 at this time as R2. As the paper feed tray 22 continues to flip, the elastic member 24 pushes the second support portion 252 to drive the first support portion 251 to move along the direction close to the +X axis, so that the first support portion 251 moves from point c to point d (the path from point c to point d is close to the telescopic direction of the elastic member 24). The second support portion 252 returns to the position of O1. At this time, mark the distance between the first support portion 251 and the second support portion 252 as R3. The first support portion 251 abuts against and is positioned in the second hole end 214 to realize the lifting and positioning of the paper feed tray 22. When the paper feed tray 22 needs to be reset, it can move in the reverse direction. This process needs to drive the second support portion 252 to overcome the elastic force of the elastic member 24.

[0043] It can be seen that since R1, R2, and R3 are equal, throughout the movement process, it can be understood that R1 and R3 share a fulcrum O1. That is, R2 has a retraction process (a tendency to move along the -X axis direction) compared to R1. That is, the movement path between the first hole end 213 and the second hole end 214 is to provide the space structure for the final first support portion 251 to abut and be positioned at the second hole end 214. The angle corresponding to the arc length formed by the first support portion 251 moving from point a to point d is the swing angle of R1 and R3, and thus is also equal to the increased opening and closing angle of the paper feed tray 22 on the bracket 21.

[0044] Therefore, when the paper feed tray 22 drives the first support portion 251 to change its position abutting in the first guide hole 211 during flipping, it positions and increases the opening and closing angle of the paper feed tray 22 on the bracket 21. At the same time, relative to the paper discharge tray 23, the space between the paper feed tray 22 and the paper discharge tray 23 is also increased. Users can more conveniently take out the jammed paper. As the paper feed tray 22 is lifted, a larger space of the paper discharge tray 23 or the paper discharge receiving area can be exposed, making it more convenient for users to determine the paper jam position and take out the jammed paper. When the user operates the paper feed tray 22 to reset, the holding state of the paper feed tray 22 can be easily released, facilitating user use.

[0045] Embodiment 2

[0046] Most of the structures of this embodiment are the same as those of Embodiment 1. The difference lies in that the structure of the limiting mechanism is different, and the corresponding structure provided on the paper feed tray 22 is also different. Most of the other structures, as well as the movement mode and principle of the limiting mechanism, are the same.

[0047] Such as Figure 6 、 Figure 7As shown in the figure, in this embodiment, the limiting mechanism and the paper feeding tray 22 adopt a split structure. The limiting mechanism is movably arranged on the paper feeding tray 22. Similarly, the limiting mechanism includes a first support portion 251 and a second support portion 252. A connecting rod 253 is used to connect the first support portion 251 and the second support portion 252, that is, the connecting rod 253 is the constant distance formed by the first support portion 251 and the second support portion 252. Among them, the paper feeding tray 22 is further provided with a tray groove 26. The tray groove 26 adopts a rectangular groove structure. The (length) extension dimension of the tray groove 26 is greater than the total length of the limiting mechanism (that is, the total length of the first support portion 251 and the second support portion 252), so that the first support portion 251 and the second support portion 252 can move necessarily within the tray groove 26. The bracket 21 still retains the first guiding hole 211 and the second guiding hole 212, and their positions are the same as those in the first embodiment. In the Y-axis direction, the projection of the tray groove 26 overlaps with the projections of the first guiding hole 211 and the second guiding hole 212. In addition, the paper feeding tray 22 is further provided with a rotating shaft 27. The rotating shaft 27 is connected to the bracket 21 through a hole-shaft structure. The rotating shaft 27 serves as the flipping fulcrum of the paper feeding tray 22, that is, the paper feeding tray 22 only flips relative to the bracket 21 around the rotating shaft 27, and the position of the rotating shaft 27 can be set according to actual needs.

[0048] During use, due to the limiting effect of the tray groove 26, the paper feeding tray 22 can drive the first support portion 251 and the second support portion 252 to move. Relative to the bracket 21, the first support portion 251 still passes through the positions of points a, b, c, and d, and the second support portion 252 still passes through the positions of O1 and O2. When the first support portion 251 moves to the position of point c, the second support portion 252 is at the position of O2. The moving distance of the first support portion 251 and the second support portion 252 within the tray groove 26 is the largest. At this time, the second support portion 252 compresses the elastic member 24, and the elastic member 24 stores elastic potential energy. Driven by the paper feeding tray 22, the tray groove 26 overlaps with the second hole end 214. The elastic member 24 releases the elastic potential energy to form a thrust on the second support portion 252, and drives the first support portion 251 to move within the tray groove 26 to the second hole end 214 through the connecting rod 253, so that the first support portion 251 abuts against and is positioned at the second hole end 214, so as to achieve the state where the paper feeding tray 22 flips and lifts. The reset of the paper feeding tray 22 is the same as that in the first embodiment.

[0049] In contrast, the paper feeding tray 22 in this embodiment is positioned and flipped through the rotating shaft 27, and there is only one flipping fulcrum, and there will be no movement of the fulcrum and then abutting and positioning. Instead, the limiting mechanism and the first guiding hole 211 and the second guiding hole 212 on the bracket 21 are used for separate abutting and positioning, that is, each structure corresponds to bear the function without affecting other structures, making the actions of the paper feeding tray 22 during flipping or resetting smoother and without jamming.

[0050] Embodiment III

[0051] The structure of this embodiment is mostly the same as that of Embodiment II. The difference lies in that the structure of the limiting mechanism and the tray groove 26 in this embodiment is different, and most of the other structures not mentioned are the same.

[0052] As Figure 8 、 Figure 9 shown, specifically, in this embodiment, the limiting mechanism only includes the first support portion 251. The second support portion 252 can be configured as a rotating shaft 27. Correspondingly, the bracket 21 is only provided with the first guide hole 211. Therefore, the size of the corresponding tray groove 26 will be relatively reduced. The paper feeding tray 22 still rotates relative to the bracket 21 around the rotating shaft 27. The elastic member 24 directly acts on the first support portion 251. At this time, the elastic member 24 can adopt a tension spring or a spring. For example, when the first support portion 251 is at the a point position on the bracket 21, the elastic member 24 is in a state of storing elastic potential energy. When the paper feeding tray 22 drives the first support portion 251 to move, after the first support portion 251 passes through the b and c point positions in sequence, the positions of the tray groove 26 and the second hole end 214 overlap. At this time, the elastic member 24 releases the elastic potential energy to push or pull the first support portion 251 to move along the tray groove 26 and finally abut and be positioned at the second hole end 214, so that the first support portion 251 reaches the d point position. When resetting, it is the same as the above embodiment, and only the elastic force of the elastic member 24 needs to be overcome.

[0053] Compared with this embodiment, the smoothness of the flipping of the paper feeding tray 22 in Embodiment II is retained, the structure of the limiting mechanism is simplified, more space of the paper feeding tray 22 is reserved, which is beneficial to the miniaturization of the positioning structure of the paper feeding tray 22.

[0054] As described above, these are only the preferred embodiments of the present invention. For the sake of concise description, not all possible combinations of the various technical features in the above embodiments are described. It does not impose any form of limitation on the present invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A paper feeding device, characterized in that, Comprising: A bracket, the bracket being provided with a limiting portion; A paper feed tray, the paper feed tray being rotatably connected to the bracket; A limiting mechanism, the limiting mechanism being arranged on the paper feed tray and abutting against the limiting portion; The paper feed tray drives the limiting mechanism to move within the limiting portion, so that the limiting mechanism changes the position where it abuts against the limiting portion, thereby changing the opening and closing angle of the paper feed tray on the bracket.

2. The paper feeding device according to claim 1, wherein, The limiting mechanism includes a first support portion and a second support portion, a constant distance being provided between the first support portion and the second support portion, and the paper feed tray drives the first support portion and the second support portion to move synchronously, so as to change the position where the first support portion abuts within the limiting portion.

3. The paper feeding device according to claim 2, wherein, The limiting portion includes a first guiding hole and a second guiding hole, and the first support portion and the second support portion are respectively movably arranged within the first guiding hole and the second guiding hole.

4. The paper feeding device according to claim 3, characterized in that, The first guiding hole has a first hole end and a second hole end, and the paper feed tray drives the first support portion to move from the first hole end to abut and be limited against the second hole end, so as to increase the opening and closing angle of the paper feed tray on the bracket.

5. The paper feeding device according to claim 4, characterized in that, The angle corresponding to the arc length formed between the first hole end and the second hole end is equal to the increased opening and closing angle of the paper feed tray on the bracket.

6. The paper feeding device according to claim 4, characterized in that, It further includes an elastic member, the elastic member being connected to the first support portion or the second support portion, and the elastic force of the elastic member drives the first support portion to abut against the second hole end, so as to change the opening and closing angle of the paper feed tray on the bracket.

7. The paper feeding device according to claim 2, wherein The limiting mechanism is integrally formed with the paper feed tray, and the paper feed tray drives the first support portion to move around the second support portion.

8. The paper feeding device according to claim 2, wherein, The limiting mechanism and the paper feed tray are of a split design, the paper feed tray being provided with a tray groove, the limiting mechanism being movably arranged within the tray groove, and the paper feed tray rotates around the bracket through a rotating shaft, so as to drive the first support portion to change the position where it abuts within the limiting portion.

9. The paper feeding device according to claim 8, characterized in that, The second support portion is configured as the rotating shaft, the first support portion being movably arranged within the tray groove, and the paper feed tray drives the first support portion to move along the limiting portion, so that the first support portion moves along the tray groove to abut against the limiting portion.

10. An image forming apparatus, characterized in that, It includes the paper feeding device according to any one of claims 1-9.

Images