A toner cartridge mounting structure for a laser printer

Abstract

The utility model relates to laser printer technical field, concretely relates to a selenium drum mounting structure of laser printer, including two limit slide ways of opposite fixed in laser printer and the operation groove on laser printer, the mounting structure still includes: at least two abutting pieces on the side turnover cover, the abutting piece is used for when the side turnover cover closes, selenium drum abutting fixed between two limit slide ways. The utility model discloses through the side turnover cover downward overturning closure, can make the clamping piece push abutting block and limit post separate, makes torsional force of torsion spring push pivot rotation and drives elastic pull rod and limit post deflection reset, makes limit post clamping in horizontal buckle groove, simultaneously, the side turnover cover pushes elastic abutting rod and the roller extrusion selenium drum, and makes elastic abutting rod compression to approach limit state and abutting fixed selenium drum, makes the closure of side turnover cover and the fixation of selenium drum synchronous completion, simplifies the step of whole selenium drum replacement operation.

Description

Technical Field

[0001] This utility model relates to the field of laser printer technology, and in particular to a toner cartridge mounting structure for a laser printer. Background Technology

[0002] Because the toner cartridge integrates more than 70% of the imaging components in a laser printer, it becomes the core component responsible for image formation. OPC drums have a lifespan of 2,000 to 3,000 pages and are less expensive, while ceramic drums have a lifespan of 90,000 pages but are more expensive. When a laser printer experiences print quality issues, the toner cartridge needs to be replaced. Some modern laser printers are equipped with a smart counter that automatically alerts the printer when the number of pages printed is close to the cartridge's lifespan, prompting for replacement.

[0003] Some existing laser printers have a flip cover located on one of the vertical surfaces outside the laser printer. When replacing the toner cartridge, you need to first release the latches that secure the flip cover, then pry open the two latches to release them from the old toner cartridge, then pry out the old toner cartridge, insert the new toner cartridge, and then pry open the two latches in the opposite direction to secure the new toner cartridge. Finally, close and secure the flip cover to complete the toner cartridge replacement operation. However, the entire toner cartridge replacement operation is relatively complicated. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a toner cartridge installation structure for laser printers to solve the problem that the entire toner cartridge replacement operation is relatively complicated.

[0005] To achieve the above objectives, this utility model provides a toner cartridge mounting structure for a laser printer, including two limiting slides fixedly within the laser printer and an operating slot disposed on the laser printer. The mounting structure further includes: At least two abutting members are provided on the side flip cover, the abutting members being used to abut and fix the toner cartridge between two limiting slides when the side flip cover is closed.

[0006] A spring-loaded shaft is located in the operating slot and can rotate back.

[0007] An elastic pull rod is radially fixed to the top of the spring shaft, and a limiting post is fixed to the free end of the elastic pull rod.

[0008] An arc-shaped groove is provided on the side flip cover and connected to the inside of the operating groove, and a horizontal buckle groove is provided at the end of the arc-shaped groove away from the operating groove. Under the torque of the rebound shaft, the elastic pull rod is reset and deflected to the horizontal buckle groove, so that the limiting post passes through the arc-shaped groove and is locked in the horizontal buckle groove, thus limiting and fixing the side flip cover.

[0009] Preferably, the abutment includes an elastic abutment rod fixed to the side cover and a roller rotatably disposed on the free end of the elastic abutment rod. During the downward deflection of the side cover, the roller first abuts against the outside of the drum and, as the side cover continues to deflect, the roller slowly moves upward along one of the vertical surfaces of the drum and compresses the elastic abutment rod until the side cover is completely closed, at which point the elastic abutment rod contracts to near its limit and fixes the drum against the two limiting slides.

[0010] Preferably, the spring shaft includes a rotating shaft rotatably disposed on one of the vertical surfaces within the operating groove and a torsion spring sleeved outside the rotating shaft. The two ends of the torsion spring are respectively fixed on the rotating shaft and the vertical surface within the operating groove, and the elastic pull rod is radially fixed at one end outside the rotating shaft.

[0011] Preferably, the axis of the limiting post is coplanar with and parallel to the axis of the rotating shaft, and the two end faces of the limiting post are respectively flush with the two end faces of the rotating shaft.

[0012] Preferably, the operating slot and the side flip cover are located on the same vertical plane of the laser printer, and the side of the operating slot near the side flip cover is open.

[0013] Preferably, the mounting structure further includes: A snap-fit ​​component is provided on the side of the side flip cover near the operating groove, and a limiting part is provided in the operating groove. The snap-fit ​​component and the limiting part are matched and used to push the limiting part to separate from the limiting post when the side flip cover is closed, thereby releasing the limiting part from the limiting post.

[0014] Preferably, the limiting part includes an elastic push rod fixedly disposed at the top of the operating groove and an abutment block fixedly disposed at the bottom of the elastic push rod. A semi-fastening ring is provided on one of the vertical surfaces of the abutment block. The semi-fastening ring and the abutment block together form a semi-open limiting groove. The free end of the semi-fastening ring is provided with an inclined surface. An arc-shaped baffle is disposed in the operating groove. The arc of the arc-shaped baffle is the same as the arc of the arc-shaped groove, and the top of the arc-shaped baffle is connected to and aligned with one end of the arc-shaped groove. The arc-shaped baffle is located between the limiting post and the rotating shaft.

[0015] Preferably, the snap-fit ​​component includes a movable rod hinged to a vertical surface of the side-flip cover near the operating slot and a flat stop fixed to the vertical surface of the side-flip cover near the operating slot. The flat stop is used to restrict the movable rod from deflecting outwards from the operating slot, so that the movable rod can only deflect inwards from the operating slot. An elastic retractable rod is hinged between the movable rod and the vertical surface of the side-flip cover near the operating slot. The elastic retractable rod, the elastic abutment rod, and the elastic push rod have the same structure.

[0016] The beneficial effects of this utility model are: This invention involves sequentially pushing the limiting post from the horizontal locking groove and the arc-shaped groove into the operating groove, where it is pressed and fixed onto the arc-shaped baffle by the abutment block. Then, the side cover is flipped upwards, separating the abutment from the old toner cartridge, thus releasing its abutment and allowing the toner cartridge to be easily pulled out and replaced between the two limiting slides. After replacement, the side cover is flipped downwards. During its closing process, the movable rod, limited by the flat baffle, presses against the inclined surface of the semi-locking ring, causing the abutment block to separate from the limiting post. Under the torsion of the torsion spring and the guidance of the arc-shaped baffle, the elastic pull rod deflects into the arc-shaped groove, and the limiting post is finally locked in the horizontal buckle groove. During this process, the side-flip cover pushes the elastic abutment rod and roller to squeeze the toner cartridge until the side-flip cover is completely closed and fixed. Then, the elastic abutment rod contracts to near its limit, thus firmly pressing the toner cartridge into the limiting slide. The closing of the side-flip cover and the fixing of the toner cartridge are completed simultaneously. The operation is simple and efficient, simplifies the operation steps, and reduces the resistance when removing the toner cartridge. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 ; Figure 2 This is a three-dimensional illustration of the present invention. Figure 2 ; Figure 3 This is a three-dimensional illustration of the present invention. Figure 3 ; Figure 4 This is a three-dimensional illustration of the present invention. Figure 4 ; Figure 5 for Figure 4 An enlarged schematic diagram of part A in the middle.

[0019] The diagram is marked as follows: 1. Operating groove; 2. Rebound shaft; 3. Elastic pull rod; 4. Limiting post; 5. Arc-shaped groove; 6. Horizontal buckle groove; 7. Limiting part; 71. Arc-shaped baffle; 72. Abutting block; 73. Semi-buckle ring; 74. Limiting groove; 75. Elastic push rod; 8. Abutting component; 81. Elastic abutting rod; 82. Roller; 9. Snap-fit ​​component; 91. Movable rod; 92. Elastic retraction rod; 93. Flat stop block; 10. Limiting slide. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0021] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] like Figures 1 to 5 As shown, a toner cartridge mounting structure for a laser printer includes two limiting slides 10 fixedly within the laser printer and an operating slot 1 on the laser printer. The mounting structure also includes: At least two abutting members 8 are provided on the side cover, the abutting members 8 are used to abut and fix the drum between the two limiting slides 10 when the side cover is closed.

[0023] A spring-loaded shaft 2 is located in the operating groove 1 and can be rotated back.

[0024] An elastic rod 3 is radially fixed to the top of the spring shaft 2, and a limiting post 4 is fixed to the free end of the elastic rod 3. The elastic rod 3 includes a sleeve fixed to one end of the spring shaft 2 and an insert rod inserted into the sleeve. A tension spring is provided inside the sleeve. The tension spring is located between the end face of the insert rod and the end face of the sleeve near the spring shaft 2. The insert rod retracts into the sleeve under the tension of the tension spring.

[0025] An arc-shaped groove 5 is located on the side-flip cover and connects to the inside of the operating groove 1. A transverse locking groove 6 is located at one end of the arc-shaped groove 5 away from the operating groove 1, with one end of the transverse locking groove 6 laterally close to the operating groove 1. Under the torque of the return shaft 2, the elastic pull rod 3 is reset and deflected towards the transverse locking groove 6, causing the limiting post 4 to pass through the arc-shaped groove 5 and engage in the transverse locking groove 6, thus limiting and fixing the side-flip cover. This allows the closing and fixing of the side-flip cover and the limiting and fixing of the toner cartridge to be performed and completed simultaneously. By stretching the elastic pull rod 3, the limiting post 4 slides from the transverse locking groove 6 into the arc-shaped groove 5, and then... The elastic lever 3 is pushed upward by the arc groove 5, causing the spring shaft 2 to accumulate torque until the limiting post 4 moves from the arc groove 5 into the operating groove 1. At this time, the limiting fixation of the side cover is released, and the side cover can be flipped upward, so that the contact part 8 is separated from the old toner cartridge, releasing its contact fixation on the old toner cartridge. This makes it easier for the operator to pull out the old toner cartridge laterally between the two limiting slides 10, and then insert the new toner cartridge laterally between the two limiting slides 10. This simplifies the toner cartridge replacement operation steps, improves the efficiency of toner cartridge replacement operation, and reduces the difficulty of toner cartridge replacement operation.

[0026] like Figure 2 and Figure 3 As shown, the abutment 8 includes an elastic abutment rod 81 fixed to the side cover and a roller 82 rotatably disposed on the free end of the elastic abutment rod 81. During the downward deflection of the side cover, the roller 82 first abuts against the outside of the drum and, as the side cover continues to deflect, the roller 82 slowly moves upward along one of the vertical surfaces of the drum and compresses the elastic abutment rod 81 until the side cover is completely closed, causing the elastic abutment rod 81 to contract to near its limit state and fix the drum against the two limiting slides 10.

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the spring shaft 2 includes a rotating shaft 21 rotatably disposed on one of the vertical surfaces in the operating groove 1 and a torsion spring 22 sleeved on the outside of the rotating shaft 21. The two ends of the torsion spring 22 are respectively fixed on the rotating shaft 21 and the vertical surface in the operating groove 1. The elastic pull rod 3 is fixed radially at one end outside the rotating shaft 21.

[0028] The axis of the limiting post 4 is coplanar and parallel to the axis of the rotating shaft 21, and the two end faces of the limiting post 4 are flush with the two end faces of the rotating shaft 21. By pushing the elastic pull rod 3 upward, the rotating shaft 21 is deflected, causing the torsion spring 22 to accumulate elastic torque, and causing the limiting post 4 to disengage from the horizontal buckle groove 6 and the arc groove 5 in sequence, and then enter the operating groove 1, releasing the limiting post 4 and the elastic pull rod 3 from the side flip cover. After the side flip cover is completely closed, under the action of the elastic torque accumulated by the torsion spring 22, the rotating shaft 21 is reset and rotated, and the elastic pull rod 3 and the limiting post 4 are deflected synchronously, causing the limiting post 4 to slide in the arc groove 5 until it slides between the arc groove 5 and the horizontal buckle groove 6. Under the elastic pull of the elastic pull rod 3, it enters the interior of the horizontal buckle groove 6, completing the limiting and fixing of the side flip cover.

[0029] like Figures 1 to 5 As shown, the operating groove 1 and the side cover are located on the same vertical plane of the laser printer, and the side of the operating groove 1 near the side cover is open. This design facilitates the smooth transition of the limiting post 4 from the arc groove 5 into the operating groove 1, or from the operating groove 1 into the arc groove 5, when the limiting fixation of the side cover is released or when the side cover is fixed, thus improving the smoothness of the transition between the two.

[0030] like Figures 1 to 5 As shown, the mounting structure also includes: A snap-fit ​​member 9 is provided on the side of the side flip cover near the operation slot 1, and a limiting part 7 is provided in the operation slot 1. The snap-fit ​​member 9 and the limiting part 7 are matched and used to push the limiting part 7 to separate from the limiting post 4 when the side flip cover is closed, thereby releasing the limiting part 7 from the limiting post 4.

[0031] The limiting part 7 includes an elastic push rod 75 fixedly disposed at the top of the operating groove 1 and an abutment block 72 fixedly disposed at the bottom of the elastic push rod 75. A semi-fastening ring 73 is provided on one of the vertical surfaces of the abutment block 72. The semi-fastening ring 73 and the abutment block 72 together form a semi-open limiting groove 74. The free end of the semi-fastening ring 73 is provided with an inclined surface. An arc-shaped baffle 71 is disposed in the operating groove 1. The arc of the arc-shaped baffle 71 is the same as the arc of the arc-shaped groove 5, and the top of the arc-shaped baffle 71 is connected to and aligned with one end of the arc-shaped groove 5. 1 is located between the limiting post 4 and the rotating shaft 21. This design allows the limiting post 4 to smoothly transition between the arc-shaped groove 5 and the operating groove 1, avoiding affecting the smoothness of the movement of the limiting post 4 and thus affecting the opening or closing of the side flip cover. After the limiting post 4 enters the operating groove 1, the abutment block 72, under the elastic force of the elastic push rod 75, limits and fixes the limiting post 4 between the abutment block 72 and the arc-shaped baffle 71, preventing the limiting post 4 from resetting under the torque of the torsion spring 22 and affecting the subsequent closing of the side flip cover.

[0032] The snap-fit ​​component 9 includes a movable rod 91 hinged to a vertical surface on the side-flip cover near the operating groove 1 and a flat stop 93 fixed to the vertical surface on the side-flip cover near the operating groove 1. The free end of the movable rod 91 corresponds to the inclined surface of the free end of the half-ring 73. The flat stop 93 is used to restrict the movable rod 91 from deflecting outwards in the operating groove 1, so that the movable rod 91 can only deflect inwards in the operating groove 1. An elastic retractable rod 92 is hinged between the movable rod 91 and the vertical surface on the side-flip cover near the operating groove 1. The elastic retractable rod 92 has the same structure as the elastic abutment rod 81 and the elastic push rod 75. The elastic retractable rod 92 includes a sleeve rod and a push rod inserted inside the sleeve rod. A compression spring is provided inside the sleeve rod, and the two ends of the compression spring abut against the sleeve rod. The push rod end and the end face of the sleeve rod away from the push rod are used to push the push rod to extend outwards. This design allows the movable rod 91 to abut against the inclined surface of the free end of the half-ring 73 when the side flap is closed. Under the limitation of the flat stop block 93, the movable rod 91 cannot deflect and the structural strength of the movable rod 91 is improved, so that it presses against the inclined surface of the free end of the half-ring 73. The half-ring 73 and the abutment block 72 move upwards under the pressure, and the elastic push rod 75 retracts, so that the abutment block 72 separates from the limiting post 4. This allows the limiting post 4 to slide along the arc-shaped baffle 71 and the arc-shaped groove 5 into the interior of the horizontal buckle groove 6 under the elastic torque of the torsion spring 22, automatically completing the limiting and fixing of the closed side flap.

[0033] Working principle: Before replacing the toner cartridge, first stretch the elastic lever 3, causing the limiting post 4 to slide from the horizontal locking groove 6 into the arc-shaped groove 5. Then, push the elastic lever 3 upward along the arc-shaped groove 5 to deflect it, causing the return shaft 2 to accumulate torque until the limiting post 4 moves from the arc-shaped groove 5 into the operating groove 1. At this point, the limiting fixation of the side cover is released, and the side cover can be flipped upward, causing the contact part 8 to separate from the old toner cartridge, releasing its contact fixation on the old toner cartridge. This allows the operator to laterally pull out the old toner cartridge from between the two limiting slides 10. Insert the new toner cartridge horizontally between the two limiting slides 10. When the side cover is flipped upwards, the movable rod 91 abuts against the inner boundary of the semi-locking ring 73. The degree of freedom of the movable rod 91 will deflect towards the inside of the operating groove 1 and press against the vertical surface of the side cover near the operating groove 1. This allows the movable rod 91 to move out of the inside of the semi-locking ring 73, and in the process, the elastic retraction rod 92 is compressed. After the toner cartridge is replaced, flip the side cover downwards. Before the side cover is fully closed, the roller 82 first abuts against the outside of the toner cartridge and moves along with the side cover. As the flip cover continues to deflect, the roller 82 slowly moves upward along one of the vertical surfaces of the drum and compresses the elastic abutment rod 81 until the side flip cover is fully closed. This causes the elastic abutment rod 81 to contract to near its limit, firmly abutting the drum between the two limiting slides 10. During this process, the movable rod 91 abuts against and presses against the inclined surface of the free end of the semi-fastening ring 73. Under the limitation of the flat stop block 93, the movable rod 91 cannot deflect, and its structural strength is increased, causing it to press against the inclined surface of the free end of the semi-fastening ring 73. Under the pressure, the semi-fastening ring 73 and the abutment block 72 move upward and cause the elastic push rod 75 to retract, so that the abutment block 72 separates from the limiting post 4. This allows the limiting post 4 to slide along the arc-shaped baffle 71 and the arc-shaped groove 5 into the interior of the horizontal fastening groove 6 under the elastic torque of the torsion spring 22, automatically completing the limiting and fixing of the closed side cover. This achieves simultaneous and complete abutment fixing of the toner cartridge and limiting fixing of the side cover, eliminating the need for separate disassembly and fixing of the toner cartridge, simplifying the toner cartridge replacement process, and improving the efficiency of toner cartridge replacement operations.

[0034] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0035] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A toner cartridge mounting structure for a laser printer, comprising two limiting slides (10) fixedly within the laser printer and an operating slot (1) disposed on the laser printer, characterized in that, The mounting structure also includes: At least two abutting members (8) are provided on the side flip cover, the abutting members (8) are used to abut and fix the drum between two limiting slides (10) when the side flip cover is closed; A spring-loaded shaft (2) is provided in the operating groove (1) and can be spring-loaded and rotated. An elastic rod (3) is radially fixed to the top of the spring shaft (2) and a limiting post (4) is fixed to the free end of the elastic rod (3); An arc-shaped groove (5) is provided on the side flip cover and connected to the inside of the operation groove (1), and a horizontal buckle groove (6) is provided in the arc-shaped groove (5) at one end away from the operation groove (1). Under the torque of the spring shaft (2), the elastic pull rod (3) is reset and deflected to the horizontal buckle groove (6), so that the limiting post (4) passes through the arc-shaped groove (5) and is locked in the horizontal buckle groove (6), so that the side flip cover is limited and fixed.

2. The toner cartridge mounting structure for a laser printer according to claim 1, characterized in that, The abutment (8) includes an elastic abutment rod (81) fixed to the side cover and a roller (82) rotatably disposed on the free end of the elastic abutment rod (81).

3. The toner cartridge mounting structure for a laser printer according to claim 2, characterized in that, The spring shaft (2) includes a rotating shaft (21) rotatably disposed on one of the vertical surfaces in the operating groove (1) and a torsion spring (22) sleeved on the outside of the rotating shaft (21). The two ends of the torsion spring (22) are respectively fixed on the rotating shaft (21) and the vertical surface in the operating groove (1). The elastic rod (3) is fixed radially at one end outside the rotating shaft (21).

4. The toner cartridge mounting structure for a laser printer according to claim 3, characterized in that, The axis of the limiting post (4) is coplanar with and parallel to the axis of the rotating shaft (21), and the two end faces of the limiting post (4) are flush with the two end faces of the rotating shaft (21).

5. The toner cartridge mounting structure for a laser printer according to claim 1, characterized in that, The operation slot (1) and the side cover are located on the same vertical plane of the laser printer, and the side of the operation slot (1) near the side cover is open.

6. The toner cartridge mounting structure for a laser printer according to claim 3, characterized in that, The mounting structure also includes: A snap-fit ​​member (9) is provided on the side of the side flap close to the operation groove (1) and a limiting part (7) is provided in the operation groove (1). The snap-fit ​​member (9) and the limiting part (7) are matched and used to push the limiting part (7) to separate from the limiting post (4) when the side flap is closed, thereby releasing the limiting part (7) from the limiting post (4).

7. The toner cartridge mounting structure for a laser printer according to claim 6, characterized in that, The limiting part (7) includes an elastic push rod (75) fixedly disposed at the top of the operating groove (1) and an abutment block (72) fixed at the bottom of the elastic push rod (75). A half-ring (73) is provided on one of the vertical surfaces of the abutment block (72). The half-ring (73) and the abutment block (72) together form a semi-open limiting groove (74). The free end of the half-ring (73) is provided with an inclined surface. An arc-shaped baffle (71) is provided in the operating groove (1). The arc of the arc-shaped baffle (71) is the same as the arc of the arc groove (5). The top of the arc-shaped baffle (71) is connected to and aligned with one end of the arc groove (5). The arc-shaped baffle (71) is located between the limiting post (4) and the rotating shaft (21).

8. The toner cartridge mounting structure for a laser printer according to claim 7, characterized in that, The snap-fit ​​component (9) includes a movable rod (91) hinged to the vertical surface of the side cover near the operating groove (1) and a flat stop (93) fixed to the vertical surface of the side cover near the operating groove (1). The flat stop (93) is used to restrict the movable rod (91) from deflecting to the outside of the operating groove (1), so that the movable rod (91) can only deflect to the inside of the operating groove (1). An elastic retractable rod (92) is hinged between the movable rod (91) and the vertical surface of the side cover near the operating groove (1). The elastic retractable rod (92), the elastic abutment rod (81), and the elastic push rod (75) have the same structure.

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