A split drive gear structure

Abstract

The utility model provides a kind of separated drive gear structure, including main drive gear and the third level drive gear of axially slidable, the main drive gear inside is equipped with the adaptive slot close to the one side of selenium drum body and the clamping structure away from selenium drum body, the clamping structure includes two sliding grooves and two clamping grooves of circumferential symmetry, the middle part of the clamping groove is equipped with protrusion, the side of protrusion towards selenium drum body is first sliding slope, the side away from selenium drum body is vertical clamping surface, the third level drive gear includes the positioning cylinder extending into the clamping structure, the positioning cylinder is equipped with with sliding bar and the elastic buckle arm of the clamping groove cooperation of the sliding groove cooperation, the elastic buckle arm end is equipped with buckle head, its side towards selenium drum body is second sliding slope, the side away from selenium drum body is third sliding slope. The utility model relates to toner cartridge technical field.

Description

Technical Field

[0001] This utility model relates to the field of toner cartridge technology, and in particular to a split drive gear structure. Background Technology

[0002] Currently, in the production of Canon 069 series toner cartridges with built-in seals, a structure is commonly used where the main drive gear drives the stirring rack gear inside the toner cartridge. In this structure, when the toner cartridge is running, the stirring rack rotates and simultaneously tears off the seal film, collecting it on the stirring rod. To ensure product quality, the toner cartridges undergo 100% machine inspection. To prevent the stirring rack from accidentally tearing off the seal film during testing, the current process does not install the stirring rack drive gear before full inspection, keeping the stirring rack stationary during the inspection. After passing the test, the toner cartridge and waste toner compartment of the toner cartridge must be separated, the gear cover removed, the stirring rack drive gear manually installed, and then the gear cover, toner compartment, and waste toner compartment reassembled before cleaning and warehousing.

[0003] However, this process has significant drawbacks: the operation is extremely cumbersome, and after testing, a lot of manual labor is required to repeatedly disassemble and reassemble the toner cartridge to replace the gears, which is not only inefficient but also has high labor costs; the disassembly and reassembly process is very likely to cause secondary contamination or damage to the parts, creating hidden quality problems that are difficult to detect; since it cannot be re-verified after reassembly, it is impossible to monitor whether the secondary disassembly and reassembly has caused quality problems; especially when the product needs to be reworked, the transmission gears must be removed again and the entire disassembly and reassembly testing process must be repeated, further amplifying the efficiency and quality risks.

[0004] Therefore, the inventors urgently need a separable sliding gear structure that can switch drive states and achieve separation and engagement of the stirring frame transmission gear without disassembling the toner cartridge body, in order to completely solve the above problems. Utility Model Content

[0005] To address the shortcomings of the existing technology, this utility model provides a separate drive gear structure, aiming to solve the problems of low efficiency, high labor costs, and potential quality risks caused by repeated disassembly and reassembly of the transmission gear during full inspection of toner cartridges in the existing technology.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a split drive gear structure, including a main drive gear and an axially sliding third-stage drive gear. The main drive gear has an adapter groove near the drum body and a locking structure away from the drum body. The locking structure includes two circumferentially symmetrical sliding grooves and two locking grooves. A protrusion is provided in the middle of the locking groove. The side of the protrusion facing the drum body is a first sliding slope, and the side away from the drum body is a vertical locking surface. The third-stage drive gear includes a positioning post extending into the locking structure. The positioning post has an anti-rotation sliding strip that cooperates with the sliding groove and an elastic latching arm that cooperates with the locking groove. The end of the elastic latching arm has a latching head. The side facing the drum body is a second sliding slope, and the side away from the drum body is a third sliding slope. When the second sliding slope abuts against the vertical locking surface, the third-stage drive gear disengages from the intermediate gear. When the third sliding slope abuts against the first sliding slope, the third-stage drive gear engages with the intermediate gear.

[0007] Based on the above, the beneficial effects of a separate drive gear structure are that it solves the problems of low efficiency, high labor costs, and potential quality risks caused by repeated disassembly and reassembly of the transmission gear during full inspection of toner cartridges in the existing technology; mainly reflected in: This invention utilizes a locking structure between an axially sliding third-stage drive gear and the main drive gear to allow the third-stage drive gear to directly switch between a disengaged and engaged state with the intermediate gear. This achieves a seamless transition between the working states of the toner cartridge body without disassembly. Specifically, when a full inspection is required, the third-stage drive gear is pushed with a tool to the position where the second sliding inclined surface abuts against the vertical locking surface, causing the inner gear ring to disengage from the intermediate gear. At this point, the stirring frame stops rotating, and the full inspection can be performed directly. After the full inspection is completed, the third-stage drive gear is pushed to the position where the third sliding inclined surface abuts against the first sliding inclined surface, causing the inner gear ring to engage with the intermediate gear and restoring the stirring function. This invention utilizes a self-locking mechanism between the elastic buckle arm and the protruding inclined surface of the locking groove, enabling state switching to require only a single axial push operation. Specifically, when the buckle head of the elastic buckle arm slides, it undergoes elastic deformation by pressing the vertical locking surface through the second sliding inclined surface, and after passing the protrusion, it achieves the engagement of the inner gear ring with the intermediate gear. When sliding in the reverse direction, the third sliding inclined surface is deformed by the pressure of the first sliding inclined surface, and after passing the protrusion, it achieves reverse locking. This invention ensures that the third-stage drive gear switches in a closed environment by using the cooperation of the anti-rotation sliding strip and the sliding groove, as well as the sliding seal between the limiting disc and the adapter groove. Specifically, the anti-rotation sliding strip restricts the circumferential rotation of the third-stage drive gear, ensuring precise meshing / disengagement between the inner gear ring and the intermediate gear; the limiting disc slides in the adapter groove to prevent external dust from entering the gear transmission area; all operations are completed by pushing with external tools after the toner cartridge is assembled, without the need to disassemble any parts.

[0008] Furthermore, the main drive gear includes a gear body and a sliding guide sleeve arranged coaxially, the adapter groove is disposed in the gear body, and the locking structure is disposed inside the sliding guide sleeve.

[0009] Based on the above, the beneficial effects of the gear body are that by setting an adapter groove to form a sliding fit with the sliding disk of the third-stage drive gear, the axial movement trajectory of the third-stage drive gear is precisely guided, ensuring stable and reliable meshing / disengagement between the inner gear ring and the intermediate gear; the beneficial effects of the sliding guide sleeve are that by setting an internal locking structure and its included sliding groove and locking groove, it provides an axial movement channel and two-position locking function for the positioning column of the third-stage drive gear, realizing the switching of the drive state without disassembly.

[0010] Furthermore, the sliding guide sleeve has a cylindrical structure, and four axially extending guide grooves are evenly distributed along the inner wall of the sliding guide sleeve in the circumferential direction, wherein two opposite guide grooves constitute the sliding groove, and the other two opposite guide grooves constitute the locking groove.

[0011] Based on the above, the beneficial effect of the guide groove is that by uniformly distributing four axially extending groove structures along the circumference, it provides a precise guide path for the anti-rotation sliding strip and elastic latching arm on the positioning column, thereby realizing the smooth sliding and accurate positioning of the third-stage drive gear.

[0012] Furthermore, the third-stage drive gear also includes a limiting disc disposed on the side of the positioning column near the drum body, the limiting disc forming a sliding fit with the adapter groove.

[0013] Based on the above, the beneficial effect of the limiting disc is that by forming a sliding fit with the adapter groove, it limits the maximum axial displacement of the third-stage drive gear, prevents the third-stage drive gear from disengaging from the main drive gear during sliding, and ensures the stability of gear meshing.

[0014] Furthermore, the diameter of the limiting disk is larger than that of the positioning column, and the end face of the limiting disk is provided with an inner gear ring that meshes with the intermediate gear.

[0015] Based on the above, the beneficial effect of the internal gear ring is that by setting it on the end face of the limiting disc, it directly meshes with the intermediate gear, realizing the function of reliably transmitting the power of the main drive gear to the mixing frame gear, while simplifying the gear transmission structure.

[0016] Furthermore, the thickness of the elastic buckle arm is less than that of the anti-rotation sliding strip.

[0017] Based on the above, the beneficial effect of the elastic buckle arm is that by adopting a design with a thickness smaller than that of the anti-rotation sliding strip, it achieves the necessary elastic deformation capacity while ensuring sufficient structural strength, so that the buckle head can slide and lock smoothly in the raised locking groove.

[0018] Furthermore, the width of the vertical locking surface is not less than the thickness of the buckle head, and it is perpendicular to the axis of the sliding guide sleeve.

[0019] Based on the above, the beneficial effects of the vertical locking surface are that, through the design that the width is not less than the thickness of the locking head, it provides sufficient contact area to ensure that the locking head forms a stable mechanical lock when locked, preventing the third-stage drive gear from being accidentally displaced. At the same time, by making the vertical locking surface strictly perpendicular to the axis of the sliding guide sleeve, it ensures the fit between the locking head and the locking surface, realizing the reliable fixation of the third-stage drive gear when it is disengaged, and avoiding locking failure caused by angular deviation.

[0020] Furthermore, the first sliding inclined plane and the third sliding inclined plane have the same inclination angle, forming a matching inclined plane guide structure.

[0021] Based on the above, the beneficial effect of the inclined plane guide structure is that the cooperation between the first sliding inclined plane and the third sliding inclined plane provides a reliable mechanical guide for the state switching of the third stage drive gear, avoiding jamming or inaccurate positioning.

[0022] Furthermore, the angle between the third sliding inclined surface of the buckle head and the vertical locking surface is 30° to 60°.

[0023] To more clearly illustrate the above-mentioned features of this utility model and the objectives it aims to achieve, the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0024] Figure 1 : This is a cross-sectional view showing the mating of the main drive gear and the third-stage drive gear of this utility model; Figure 2 : This is a schematic diagram of the internal structure of the main drive gear of this utility model; Figure 3 : This is a schematic diagram of the third-stage drive gear of this utility model.

[0025] Explanation of reference numerals: 1-Main drive gear, 11-Adapter groove, 12-Clocking structure, 121-Sliding groove, 122-Clocking groove, 123-Protrusion, 1231-First sliding ramp, 1232-Vertical locking surface, 13-Gear body, 14-Sliding guide sleeve, 2-Third stage drive gear, 21-Inner gear ring, 23-Positioning column, 231-Anti-rotation sliding strip, 232-Elastic latching arm, 233-Latching head, 2331-Second sliding ramp, 2332-Third sliding ramp, 24-Limiting disc. Detailed Implementation

[0026] like Figures 1-3 As shown, a split drive gear structure includes a main drive gear 1 and an axially sliding third-stage drive gear 2. The main drive gear 1 has an adapter groove 11 near the drum body and a locking structure 12 away from the drum body. The locking structure 12 includes two circumferentially symmetrical sliding grooves 121 and two locking grooves 122. A protrusion 123 is provided in the middle of the locking groove 122. The side of the protrusion 123 facing the drum body is a first sliding inclined surface 1231, and the side away from the drum body is a vertical locking surface 1232. The third-stage drive gear 2 includes gears extending into the locking structure 12. The positioning column 23 is provided with an anti-rotation sliding strip 231 that cooperates with the sliding groove 121 and an elastic latching arm 232 that cooperates with the locking groove 122. The end of the elastic latching arm 232 is provided with a latching head 233. The side facing the drum body is a second sliding slope 2331, and the side away from the drum body is a third sliding slope 2332. When the second sliding slope 2331 abuts against the vertical locking surface 1232, the third-stage drive gear 2 disengages from the intermediate gear. When the third sliding slope 2332 abuts against the first sliding slope 1231, the third-stage drive gear 2 engages with the intermediate gear.

[0027] The main drive gear 1 includes a gear body 13 and a sliding guide sleeve 14 arranged coaxially. The adapter groove 11 is disposed in the gear body 13, and the locking structure 12 is disposed inside the sliding guide sleeve 14.

[0028] The sliding guide sleeve 14 has a cylindrical structure. The inner wall of the sliding guide sleeve 14 has four axially extending guide grooves evenly distributed along the circumference. Two of the guide grooves opposite each other form the sliding groove 121, and the other two guide grooves opposite each other form the locking groove 122.

[0029] The third-stage drive gear 2 also includes a limiting disk 24 located on the side of the positioning column 23 near the drum body, and the limiting disk 24 forms a sliding fit with the adapter groove 11.

[0030] The diameter of the limiting disk 24 is larger than that of the positioning column 23, and the end face of the limiting disk 24 is provided with an inner gear ring 21 that meshes with the intermediate gear.

[0031] The thickness of the elastic buckle arm 232 is less than that of the anti-rotation sliding strip 231.

[0032] The width of the vertical locking surface 1232 is not less than the thickness of the buckle head 233, and it is perpendicular to the axis of the sliding guide sleeve 14.

[0033] The first sliding inclined surface 1231 and the third sliding inclined surface 2332 have the same inclination angle, forming a matching inclined surface guide structure.

[0034] The angle between the third sliding inclined surface 2332 of the buckle head 233 and the vertical locking surface 1232 is 30° to 60°.

[0035] In summary, the specific embodiments of this utility model are as follows: When the toner cartridge needs to undergo full inspection, the operator uses a tool to push the positioning column 23 of the third-stage drive gear 2 away from the toner cartridge body. At this time, the latching head 233 at the end of the elastic latching arm 232 is subjected to external force, and its third sliding slope 2332 presses the first sliding slope 1231 of the protrusion 123 in the locking groove 122, forcing the elastic latching arm 232 to elastically deform inward. After the latching head 233 passes the protrusion 123, the elastic latching arm 232 resets so that the second sliding slope 2331 abuts against the vertical locking surface 1232. The third-stage drive gear 2 is in the first working position. At this time, the inner gear ring 21 of the end face of the limiting disc 24 disengages from the intermediate gear. When the printer starts, the stirring rack gear meshing with the intermediate gear is stationary, so that the stirring rack does not rotate, and the toner cartridge can be directly subjected to full inspection test. When the full inspection is completed and the stirring function needs to be activated, the operator pushes the positioning column 23 in the opposite direction to move it closer to the drum body. The second sliding inclined surface 2331 of the latch head 233 contacts the vertical locking surface 1232 of the protrusion 123. Under the action of axial thrust, the vertical locking surface 1232 of the protrusion 123 in the locking groove 122 squeezes the second sliding inclined surface 2331, causing the elastic latch arm 232 to deform. After the latch head 233 passes the protrusion 123, the third sliding inclined surface 2332 completely abuts against the first sliding inclined surface 1231. The third stage drive gear 2 enters the second working position. At this time, the inner gear ring 21 meshes with the intermediate gear, and the power of the main drive gear 1 is transmitted to the stirring frame gear through the inner gear ring 21. Throughout the entire process, the anti-rotation sliding strip 231 always slides within the sliding groove 121 to prevent the third-stage drive gear 2 from circumferentially deflecting; the limiting disc 24 moves axially within the fitting groove 11 to limit the maximum displacement and maintain a seal; the guide groove of the sliding guide sleeve 14 ensures that the positioning column 23 slides along a straight trajectory.

[0036] The above description is only the optimal solution embodiment of this utility model and is not intended to limit this utility model. Various modifications or substitutions made by those skilled in the art to this utility model without departing from the essence and protection scope of this utility model should also be within the protection scope of this utility model.

Claims

1. A split drive gear structure, characterized in that: The device includes a main drive gear (1) and an axially sliding third-stage drive gear (2). The main drive gear (1) has an adapter groove (11) near the drum body and a locking structure (12) away from the drum body. The locking structure (12) includes two circumferentially symmetrical sliding grooves (121) and two locking grooves (122). The locking groove (122) has a protrusion (123) in the middle. The side of the protrusion (123) facing the drum body is a first sliding inclined surface (1231), and the side away from the drum body is a vertical locking surface (1232). The third-stage drive gear (2) includes a positioning column (23) extending into the locking structure (12). The positioning column (23) is provided with an anti-rotation sliding strip (231) that cooperates with the sliding groove (121) and an elastic buckle arm (232) that cooperates with the locking groove (122). The end of the elastic buckle arm (232) is provided with a buckle head (233). The side facing the drum body is the second sliding slope (2331), and the side away from the drum body is the third sliding slope (2332). When the second sliding slope (2331) abuts against the vertical locking surface (1232), the third stage drive gear (2) disengages from the intermediate gear. When the third sliding slope (2332) abuts against the first sliding slope (1231), the third stage drive gear (2) meshes with the intermediate gear.

2. The split drive gear structure according to claim 1, characterized in that: The main drive gear (1) includes a gear body (13) and a sliding guide sleeve (14) arranged coaxially. The adapter groove (11) is disposed in the gear body (13), and the locking structure (12) is disposed inside the sliding guide sleeve (14).

3. The split drive gear structure according to claim 2, characterized in that: The sliding guide sleeve (14) has a cylindrical structure. The inner wall of the sliding guide sleeve (14) has four axially extending guide grooves evenly distributed along the circumference. Two of the guide grooves opposite each other constitute the sliding groove (121), and the other two guide grooves opposite each other constitute the locking groove (122).

4. The split drive gear structure according to claim 1, characterized in that: The third-stage drive gear (2) also includes a limiting disk (24) located on the side of the positioning column (23) near the drum body, and the limiting disk (24) and the adapter groove (11) form a sliding fit.

5. A split drive gear structure according to claim 4, characterized in that: The diameter of the limiting disk (24) is larger than that of the positioning column (23), and the end face of the limiting disk (24) is provided with an inner gear ring (21) that meshes with the intermediate gear.

6. The split drive gear structure according to claim 1, characterized in that: The thickness of the elastic buckle arm (232) is less than that of the anti-rotation sliding strip (231).

7. A split drive gear structure according to claim 2, characterized in that: The width of the vertical locking surface (1232) is not less than the thickness of the buckle head (233), and it is perpendicular to the axis of the sliding guide sleeve (14).

8. The split drive gear structure according to claim 1, characterized in that: The first sliding inclined surface (1231) and the third sliding inclined surface (2332) have the same inclination angle, forming a matching inclined surface guide structure.

9. A split drive gear structure according to claim 1, characterized in that: The angle between the third sliding inclined surface (2332) of the buckle head (233) and the vertical locking surface (1232) is 30° to 60°.

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