A quick dismounting structure of a printer shaft

Abstract

The utility model relates to a printer technical field, concretely relates to a printer axle center quick dismounting structure, including mounting seat, two mounting seat between be provided with axle center, mounting seat and axle center between be provided with dismounting subassembly, among them: the dismounting subassembly includes connecting column, the inside of mounting seat is provided with the installation groove, the upper end sliding connection of inside mounting seat has the locking lever, the upper end of connecting column inside is provided with the locking hole, after connecting column is engaged and is connected in the inside of installation groove, the locking lever is under the action of first spring that sets up between locking lever one side and mounting seat and is automatically engaged and is connected in the inside of locking hole, the installation position of connecting column is locked, need not additional manual operation, realize "no tool, no jamming" smooth installation experience, avoided the component damage that traditional interference fit led to, realize "insertion is locked" quick installation effect, significantly promote axle center maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of printer technology, and more specifically, to a quick-release and disassembly structure for a printer shaft. Background Technology

[0002] In modern office and production settings, printers, as essential output devices, are used increasingly frequently. With the continuous development of printer technology, users have placed higher demands on the stability and maintainability of printers. The printer spindle, as a key internal transmission component, directly impacts maintenance efficiency and operating costs due to its ease of disassembly and assembly. From an industry perspective, routine maintenance and repair of printers are essential to ensuring their normal operation. During long-term use, the printer spindle may require replacement or repair due to wear, malfunction, or other reasons.

[0003] There are many existing technologies for shaft assembly and disassembly structures, such as:

[0004] Chinese Patent (Application No.: CN202220672593.6) discloses a printer shaft that can prevent paper jams. The shaft includes a shaft with wedges fixedly mounted at both ends. A lubricating layer is fixedly mounted on the outer wall of both the shaft and the wedges. A fixing rod is fixedly connected to the middle of the front faces of each of the two wedges. A fixing sleeve is inserted through each of the two fixing rods. A limit groove is formed inside each of the two fixing sleeves. A fixing ring is fixedly connected to the end of each fixing rod away from the shaft. A first threaded hole is formed on the outer wall of each of the two fixing rings. This utility model discloses a printer shaft that can prevent paper jams. By providing wedges and a lubricating layer, it prevents paper jams. By providing a limit plate, fixing screws, and a second threaded hole, it prevents offset. By providing a limit groove, a limit block, a telescopic rod, and a spring, it facilitates installation and disassembly.

[0005] Traditional printer spindles often require tools such as screwdrivers and presses for installation, making the disassembly and assembly process cumbersome and hindering quick disassembly and maintenance. After prolonged use, they are prone to loosening, causing vibration or jamming during operation and affecting the stable operation of the printer. Utility Model Content

[0006] This utility model addresses the technical problems existing in the prior art by providing a quick disassembly and assembly structure for printer shafts. It solves the problem that traditional printer shafts often require the use of tools such as screwdrivers and presses during installation, making the disassembly and assembly process cumbersome and hindering the quick disassembly and maintenance of the shafts.

[0007] To achieve the above objectives, this utility model provides a quick-release and disassembly structure for a printer shaft, including a mounting base, a shaft disposed between two mounting bases, and a disassembly and assembly component disposed between the mounting base and the shaft. The disassembly and assembly component includes a connecting post, a mounting groove is provided inside the mounting base, a locking rod is slidably connected to the upper end inside the mounting base, and a locking hole is provided at the upper end inside the connecting post. After the connecting post is engaged with the mounting groove, the locking rod automatically engages with the locking hole under the action of a first spring disposed between the locking rod and the mounting base, thereby locking the installation position of the connecting post.

[0008] The beneficial effects of this utility model are:

[0009] 1. When installing the shaft, the first inclined surface of the connecting column in the disassembly and assembly assembly engages with the second inclined surface of the locking rod. During the process of inserting the connecting column into the installation slot, the locking rod is automatically lifted by the thrust of the inclined surface. No additional manual operation is required, achieving a smooth installation experience of "no tools and no jamming". This avoids the component damage caused by forced pressing in traditional interference fits.

[0010] 2. After the shaft is installed, the locking rod automatically engages with the locking hole under the action of the first spring, achieving a quick "insert and lock" installation effect. Disassembly simply requires manually lifting the locking rod to release the lock, effectively shortening the operation time compared to traditional screw fixing and significantly improving shaft maintenance efficiency.

[0011] Based on the above technical solution, the present invention can be further improved as follows.

[0012] Preferably, a buffer pad is fixedly connected to the inner side of the mounting groove.

[0013] The beneficial effect of adopting the above-mentioned further solution is that the buffer pad is made of rubber, which can absorb high-frequency vibrations during printer operation, reduce component wear, and extend the service life of the spindle.

[0014] Preferably, a first inclined surface is provided above one end of the connecting column, and a second inclined surface is provided at the lower end of the locking rod. The first inclined surface contacts the second inclined surface during the movement inside the mounting groove, pushing the locking rod upward.

[0015] The beneficial effect of adopting the above-mentioned further solution is that the locking rod is automatically lifted by the inclined plane during the insertion process, without the need for additional manual operation, achieving a smooth installation experience of "no tools and no jamming", and avoiding component damage caused by forced pressing in traditional interference fit.

[0016] Preferably, the mounting base is provided with symmetrical positioning grooves on the front and rear sides, and the connecting column is fixedly connected with symmetrical positioning columns on the front and rear sides, and the positioning columns slide inside the positioning grooves.

[0017] The beneficial effect of adopting the above-mentioned further solution is that the positioning pin slides inside the positioning groove to provide precise guidance for the shaft, ensuring the coaxiality of the shaft and the mounting base during installation, improving operational stability, and ensuring the vertical alignment of the subsequent locking rod with the locking hole, making it convenient for the subsequent locking rod to be inserted into the locking hole.

[0018] Preferably, a fixed plate is rotatably connected to the outer side of one of the mounting bases, and a movable plate is rotatably connected to the outer side of the other mounting base. A guide rod is fixedly connected to the lower end of one side of the fixed plate, and the movable plate slides on the outer side of the guide rod. A second spring is provided on the outer side of the guide rod, and the two ends of the second spring are fixedly connected to one side of the fixed plate and the movable plate, respectively.

[0019] The advantage of adopting the above-mentioned further solution is that it provides auxiliary guiding force during disassembly and assembly, avoiding hard collisions between the shaft and the mounting base.

[0020] Preferably, one end of the mounting base is fixedly connected to a gear.

[0021] The advantage of adopting the above-mentioned further solution is that it directly meshes with the printer's drive system without the need for an additional coupling, simplifying the overall structure while ensuring transmission efficiency.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] By engaging the first inclined surface of the connecting column and the second inclined surface of the locking rod in the assembly, the locking rod is automatically lifted by the inclined surface thrust during the insertion of the connecting column into the mounting slot, eliminating the need for additional manual operation and achieving a smooth installation experience of "no tools and no jamming". This avoids component damage caused by forced pressing in traditional interference fits. After insertion, the locking rod automatically engages with the locking hole under the action of the first spring, achieving a quick installation effect of "insertion and locking". During disassembly, simply lift the locking rod manually to release the lock. The operation time is effectively shortened compared to traditional screw fixing, significantly improving the efficiency of shaft maintenance. Attached Figure Description

[0024] Figure 1 This is an isometric view of one side of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the shaft and mounting base structure of this utility model;

[0026] Figure 3 This is a front cross-sectional view of the present invention.

[0027] Figure 4 This utility model Figure 3 A schematic diagram of the structure at point A.

[0028] The meanings of the labels in the diagram are as follows:

[0029] 1. Mounting bracket;

[0030] 2. Axis;

[0031] 3. Assembly / Disassembly Components; 31. Connecting Post; 32. Mounting Slot; 33. Buffer Pad; 34. First Inclined Surface; 35. Locking Rod; 36. Second Inclined Surface; 37. Locking Hole; 38. First Spring;

[0032] 4. Positioning groove; 41. Positioning post;

[0033] 5. Fixed plate; 51. Moving plate; 52. Guide rod; 53. Second spring;

[0034] 6. Gears. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Please see Figures 1-4 As shown, this embodiment provides a quick-release and disassembly structure for a printer spindle, including a mounting base 1 and a spindle 2 disposed between two mounting bases 1. Considering that the installation of traditional printer spindles 2 often requires the use of tools such as screwdrivers and presses, making the disassembly and assembly process cumbersome and not conducive to the quick disassembly and maintenance of the spindle 2, a disassembly and assembly component 3 is provided between the mounting base 1 and the spindle 2. The disassembly and assembly component 3 includes a connecting post 31. The mounting base 1 has an installation groove 32 inside. A locking rod 35 is slidably connected to the upper end inside the mounting base 1. The upper end of the connecting post 31 has a locking hole 37. After the connecting post 31 is engaged with the installation groove 32, the locking rod 35 is automatically engaged with the locking hole 37 under the action of a first spring 38 disposed between the locking rod 35 and the mounting base 1, thereby locking the installation position of the connecting post 31.

[0037] In summary, the improvement of this embodiment lies in:

[0038] By assembling and disassembling component 3, a smooth installation experience with "no tools and no jamming" is achieved between mounting base 1 and shaft 2, avoiding component damage caused by forced pressing in traditional interference fits. The locking rod 35 automatically engages with the locking hole 37 under the action of the first spring 38, achieving a quick "insert and lock" installation effect. Disassembly only requires manually lifting the locking rod 35 to release the lock, effectively shortening the operation time compared to traditional screw fixing and significantly improving the maintenance efficiency of shaft 2.

[0039] Based on the above, other structures also need to be disclosed in detail, such as:

[0040] Considering that traditional structures often lack elastic cushioning design, the vibration during printer operation can easily cause wear on the spindle 2. Therefore, a buffer pad 33 is fixedly connected to the inside of the mounting slot 32. The buffer pad 33 is made of rubber, which can absorb high-frequency vibration during printer operation, reduce component wear, and extend the service life of the spindle 2.

[0041] To improve the ease of installation of the shaft 2, a first inclined surface 34 is provided on the upper part of one end of the connecting post 31, and a second inclined surface 36 is provided on the lower end of the locking rod 35. During the movement of the first inclined surface 34 inside the mounting groove 32, it contacts the second inclined surface 36 and pushes the locking rod 35 upward. The first inclined surface 34 of the connecting post 31 cooperates with the second inclined surface 36 of the locking rod 35. During the insertion process, the locking rod 35 is automatically lifted by the inclined surface thrust, without the need for additional manual operation. This achieves a smooth installation experience of "no tools and no jamming" and avoids the component damage caused by forced pressing in traditional interference fits.

[0042] Considering that inaccurate positioning during shaft 2 installation could lead to installation deviations, affecting the locking effect of locking rod 35 on connecting post 31 and consequently impacting the stability of shaft 2 during use, symmetrical positioning grooves 4 are provided on the front and rear sides of mounting base 1. Positioning posts 41 are symmetrically fixedly connected to the front and rear sides of connecting post 31, and these posts 41 slide within the positioning grooves 4. During the insertion of connecting post 31 into mounting groove 32, the sliding of positioning posts 41 within the positioning grooves 4 provides precise guidance for shaft 2, ensuring coaxiality between shaft 2 and mounting base 1 during installation, improving operational stability, and simultaneously ensuring the vertical alignment of locking rod 35 with locking hole 37, facilitating the subsequent insertion of locking rod 35 into locking hole 37.

[0043] Considering that both ends of the shaft 2 need to be connected to the mounting base 1, in order to facilitate the installation of the shaft 2 and avoid hard collision between the shaft 2 and the mounting base 1, a fixed plate 5 is rotatably connected to the outside of one mounting base 1, and a movable plate 51 is rotatably connected to the outside of the other mounting base 1. A guide rod 52 is fixedly connected to the lower end of one side of the fixed plate 5. The movable plate 51 slides on the outside of the guide rod 52. A second spring 53 is provided on the outside of the guide rod 52. The two ends of the second spring 53 are fixedly connected to one side of the fixed plate 5 and the movable plate 51, respectively. The fixing plate 5 is fixed to a suitable position inside the printer by external bolts. Before installation, the moving plate 51 is pulled to move one mounting base 1 away from the other mounting base 1, increasing the distance between the two mounting bases 1. The guide rod 52 limits the movement direction of the moving plate 51, effectively ensuring the coaxiality between the two mounting bases 1. At the same time, the second spring 53 extends, and then the connecting post 31 at one end of the shaft 2 is inserted into the mounting groove 32 in one of the mounting bases 1. After the shaft 2 is installed and locked, the pull on the moving plate 51 is released, and the second spring 53 drives the moving plate 51 to return to its original position. The connecting post 31 at the other end of the shaft 2 is inserted into the mounting groove 32 in the other mounting base 1, completing the installation of the shaft 2.

[0044] To ensure the transmission efficiency and stability of the shaft 2, a gear 6 is fixedly connected to one end of a mounting base 1. The gear 6 can directly mesh with the printer's transmission system without the need for an additional coupling, simplifying the overall structure while ensuring transmission efficiency. Compared to traditional keyed connection structures, this reduces transmission torque loss.

[0045] In summary, the working principle of this solution is as follows:

[0046] The operator first secures the fixing plate 5 to the printer's internal bracket using external bolts. Before installing the spindle 2, the moving plate 51 is pulled, causing the right-side mounting base 1 to slide to the right along the guide rod 52. At this time, the second spring 53 stretches and stores energy, increasing the distance between the two mounting bases 1 to slightly greater than the length of the spindle 2. This design avoids hard collisions and ensures the coaxiality of the two mounting bases 1 through the guide rod 52.

[0047] Then, the connecting post 31 at the left end of the shaft 2 is aligned with the mounting groove 32 in the left mounting base 1 and inserted. During this process, the positioning post 41 slides along the inside of the positioning groove 4 to provide precise guidance for the shaft 2, ensuring the coaxiality of the shaft 2 and the mounting base 1 during installation, improving operational stability, and ensuring the vertical alignment of the locking rod 35 and the locking hole 37. When the first inclined surface 34 at one end of the connecting post 31 contacts the second inclined surface 36 at the bottom of the locking rod 35, the inclined surface thrust forces the locking rod 35 to move upward against the elastic force of the first spring 38. After insertion, the locking rod 35 is engaged in the locking hole 37 under the action of the first spring 38, completing the left-end locking. Then, the moving plate 51 is released, the second spring 53 retracts and resets, driving the right mounting base 1 to slide to the left. The connecting post 31 at the right end of the shaft 2 completes automatic locking in the same inclined surface-spring linkage manner. The entire process requires no tools and can be operated by one person with one hand, improving the efficiency of shaft 2 installation and disassembly.

[0048] When the printer is working, gear 6 meshes with the transmission system to drive the mounting base 1 and shaft 2 to rotate. The buffer pad 33 is made of rubber to absorb the high-frequency vibrations during printer operation, reduce component wear, and extend the service life of shaft 2.

[0049] During disassembly, manually lift the locking lever 35 to disengage it from the locking hole 37, and repeat the above reverse operation to quickly remove the shaft 2. This structure, through the triple innovation of elastic linkage, inclined plane guidance, and automatic locking, not only improves the efficiency of shaft 2 disassembly and assembly but also effectively extends the service life of shaft 2 and significantly reduces equipment maintenance costs.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A quick-release structure for a printer shaft, comprising a mounting base (1), characterized in that: A shaft (2) is provided between the two mounting seats (1), and a disassembly assembly (3) is provided between the mounting seats (1) and the shaft (2). The disassembly assembly (3) includes a connecting column (31), a mounting groove (32) is provided inside the mounting seat (1), a locking rod (35) is slidably connected to the upper end inside the mounting seat (1), and a locking hole (37) is provided at the upper end inside the connecting column (31). After the connecting column (31) is engaged with the mounting groove (32), the locking rod (35) is automatically engaged with the locking hole (37) under the action of a first spring (38) provided between the locking rod (35) and the mounting seat (1), thereby locking the installation position of the connecting column (31).

2. The printer shaft quick-assembly and disassembly structure according to claim 1, characterized in that: A buffer pad (33) is fixedly connected to the inner side of the mounting groove (32).

3. The quick-release and disassembly structure for a printer shaft according to claim 1, characterized in that: A first inclined surface (34) is provided above one end of the connecting column (31), and a second inclined surface (36) is provided at the lower end of the locking rod (35). During the movement of the first inclined surface (34) inside the mounting groove (32), it contacts the second inclined surface (36) and pushes the locking rod (35) upward.

4. The printer shaft quick-release and disassembly structure according to claim 1, characterized in that: The mounting base (1) has symmetrical positioning grooves (4) on its front and rear sides, and the connecting column (31) has symmetrical positioning columns (41) fixedly connected on its front and rear sides. The positioning columns (41) slide inside the positioning grooves (4).

5. The quick-release and disassembly structure for a printer shaft according to claim 1, characterized in that: A fixed plate (5) is rotatably connected to the outside of one of the mounting bases (1), and a movable plate (51) is rotatably connected to the outside of the other mounting base (1). A guide rod (52) is fixedly connected to the lower end of one side of the fixed plate (5). The movable plate (51) slides on the outside of the guide rod (52). A second spring (53) is provided on the outside of the guide rod (52). The two ends of the second spring (53) are fixedly connected to one side of the fixed plate (5) and the movable plate (51), respectively.

6. The quick-release and disassembly structure for a printer shaft according to claim 1, characterized in that: A gear (6) is fixedly connected to one end of one of the mounting bases (1).

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