A stirring structure with flat wire springs

Abstract

The utility model discloses a stirring structure with flat spring, it includes: glue piece rod, the one end of glue piece rod is shaped with the transmission shaft part for connecting with the driving part of powder box, still has a locating groove on glue piece rod along the long axis direction, spiral flat spring, the spiral flat spring sleeve is connected in the periphery of glue piece rod and is used for stirring powder, and the one end of spiral flat spring is bent and is shaped with the bending part, the powder outlet sleeve is set up in the end of spiral flat spring, and the powder outlet sleeve is opened with the powder outlet hole for discharging powder. The utility model discloses a spiral flat spring replaces traditional integral spiral plastic structure, and the spiral flat spring of the coil of flat wire is set up on the glue piece rod, and the glue piece rod is separated from the spiral structure, and the glue piece rod can be separately produced and then assembled, effectively reduces the plastic mould cost and the production cost of stirring structure, and is suitable for popularization and application to the stirring structure of various copying machines, printers, food mixers.

Description

Technical fields:

[0001] This utility model relates to the technical field of printer equipment accessories, and specifically to a stirring structure with a flat wire spring. Background technology:

[0002] Inside the toner cartridge of a copier / printer, there is usually a stirring mechanism to agitate the toner, ensuring its even distribution within the toner container and preventing clumping or sedimentation, thus guaranteeing print quality. This stirring mechanism typically includes an agitator that rotates to mix and evenly distribute the toner, ensuring that fresh toner is used for each print. It is driven by a motor, and the rotation of the agitator creates a liquid flow that evenly mixes the toner within the container. A common agitator design is a spiral plastic structure, which offers a wide coverage area and excellent mixing effect.

[0003] However, some copier toner cartridges currently on the market use a spiral plastic agitator structure to agitate the powder. For example, Chinese utility model patent application CN 20797669U discloses a copier toner cartridge, which includes: a main body, a top cover, an end cover, a gear drive unit, a toner stirring shaft, and a propulsion shaft; the gear drive unit includes a first gear connected to the toner stirring shaft, a second gear connected to the propulsion shaft, and an intermediate gear meshing with the first and second gears, which enables the toner stirring shaft and the propulsion shaft to move in conjunction; the propulsion shaft includes a shaft core and a spiral strip formed on the shaft core, the spiral strip having a forward spiral section near the connection end of the second gear and a reverse spiral section relatively far from the connection end of the second gear.

[0004] However, this existing copier toner cartridge still has the following shortcomings:

[0005] In this technical solution, the propulsion shaft is integrally molded, and the spiral strip on the propulsion shaft is difficult to mold because a mold matching the shape of the spiral strip is required for production. Once the shape of the spiral strip is modified, a new mold is required for production, which increases production costs and reduces production efficiency. In addition, once the plastic spiral strip is molded, it cannot be changed, and the density of the spiral strip cannot be adjusted. Furthermore, the plastic spiral strip will experience significant wear after prolonged use, which will affect the mixing effect.

[0006] In view of the above, the inventors propose the following technical solution. Utility model content:

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a stirring structure with a flat wire spring.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a stirring structure with a flat wire spring, comprising: a rubber rod, one end of which is formed with a transmission shaft for connecting with a powder box drive unit, and a positioning groove is formed on the rubber rod along its long axis; a spiral flat wire spring, which is sleeved around the rubber rod and used for stirring powder, one end of which is bent to form a bent portion for engaging with the positioning groove; and a powder discharge sleeve, which is sleeved on the end of the spiral flat wire spring, and the powder discharge sleeve is provided with a powder discharge hole for discharging powder.

[0009] Furthermore, in the above technical solution, the rubber rod includes a drive shaft portion, a rod body portion integrally formed with the drive shaft portion and used to pass through the helical flat wire spring, and a protrusion portion protruding between the drive shaft portion and the rod body portion and used to prevent the helical flat wire spring from coming outward, wherein the positioning groove is axially formed on the protrusion portion.

[0010] Furthermore, in the above technical solution, the protruding part is formed with an extended blocking body to prevent the bent part from falling out of the positioning groove; the protruding part is also formed with several hollow grooves to reduce weight.

[0011] Furthermore, in the above technical solution, the extended blocking body is also provided with a first inclined surface to facilitate the bending part sliding into the positioning groove.

[0012] Furthermore, in the above technical solution, the rod body has several first limiting protrusions protruding from one end near the protrusion for limiting the spiral flat wire spring, and the first limiting protrusions have a second inclined surface formed on them; the rod body also has several limiting grooves recessed for axially limiting the spiral flat wire spring.

[0013] Furthermore, in the above technical solution, the rod body is also provided with several grooves to increase rigidity.

[0014] Furthermore, in the above technical solution, a transmission surface is formed on the transmission shaft, and a snap-fit ​​groove is also formed on the transmission surface.

[0015] Furthermore, in the above technical solution, the powder outlet sleeve is formed with a sleeve hole for the spiral flat wire spring to pass through; the powder outlet sleeve is also provided with a fixing part for fixed connection with the outside.

[0016] Furthermore, in the above technical solution, the powder outlet sleeve includes a first powder outlet body and a second powder outlet body assembled together with the first powder outlet body. A receiving groove for accommodating the spiral flat wire spring is formed between the first powder outlet body and the second powder outlet body, and the fixing part is disposed on the second powder outlet body.

[0017] After adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art: In this utility model, by replacing the traditional integrated spiral plastic structure with a spiral flat wire spring, the spiral flat wire spring, made of coiled flat wire, is sleeved on the plastic rod, that is, the plastic rod is separated from the spiral structure. The plastic rod 1 can be produced separately and then assembled, effectively reducing the cost of plastic molds and the production cost of the stirring structure, making it suitable for widespread application in the stirring structures of various copiers, printers, and food mixers. In addition, compared with the existing structure, the spiral flat wire spring in this utility model is made of metal, which has better wear resistance than the existing plastic material. Furthermore, the spiral flat wire spring is easy to bend, compress, and stretch, and has extremely high plasticity. Attached image description:

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 yes Figure 1 An enlarged diagram at point A;

[0020] Figure 3 This is an exploded structural diagram of the present invention;

[0021] Figure 4 This is a three-dimensional structural diagram of the powder outlet sleeve in this utility model;

[0022] Figure 5 This is a three-dimensional structural diagram of the rubber rod in Embodiment 2 of this utility model. Detailed implementation method:

[0023] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0024] See Figures 1 to 4 As shown, this is an embodiment of the present invention, a stirring structure with a flat wire spring, comprising: a plastic rod 1, one end of which is formed with a transmission shaft portion 110 for connecting with a powder box drive unit, and a positioning groove 131 formed on the plastic rod 1 along its long axis; a spiral flat wire spring 2, which is sleeved around the plastic rod 1 and used for stirring powder, one end of which is bent to form a bent portion 210 for engaging with the positioning groove 131; and a powder discharge sleeve 3, which is sleeved on the end of the spiral flat wire spring 2, and the powder discharge sleeve 3 is provided with a powder discharge hole 310 for discharging powder.

[0025] In this invention, a spiral flat wire spring 2 replaces the traditional integrated spiral plastic structure. The spiral flat wire spring 2, made of coiled flat wire, is fitted onto the plastic rod 1, effectively separating the plastic rod 1 from the spiral structure. The plastic rod 1 can be manufactured separately and then assembled, effectively reducing the cost of plastic molds and the production cost of the mixing structure. This makes it suitable for widespread application in the mixing structures of various copiers, printers, and food mixers. Furthermore, compared to existing structures, the spiral flat wire spring 2 in this invention is made of metal, which has better wear resistance than existing plastic materials. Moreover, the spiral flat wire spring 2 is easy to bend, compress, and stretch, exhibiting excellent plasticity and adaptability to various toner cartridge shapes.

[0026] In this embodiment, the plastic rod 1 adopts a three-section design, which enables quick assembly of the helical flat wire spring 2. Specifically, the plastic rod 1 includes a drive shaft portion 110, a rod body portion 120 integrally formed with the drive shaft portion 110 and used to pass through the helical flat wire spring 2, and a protrusion portion 130 protruding between the drive shaft portion 110 and the rod body portion 120 to prevent the helical flat wire spring 2 from dislodging outward, wherein a positioning groove 131 is axially formed on the protrusion portion 130.

[0027] The protrusion 130 has an extended blocking body 132 protruding from it to prevent the bent portion 210 from dislodging from the positioning groove 131; the protrusion 130 also has several recessed slots 133 for reducing weight. The extended blocking body 132 is also provided with a first inclined surface 1321 to facilitate the bending portion 210 sliding into the positioning groove 131. Here, in order to prevent the helical flat wire spring 2 from accidentally dislodging from the positioning groove 131 due to external force during operation, the side wall of one side of the positioning groove 131 is extended to obtain the extended blocking body 132, which can effectively block the bent portion 210. In addition, the first inclined surface 1321 can assist the bent portion 210 in sliding into the positioning groove 131 during assembly.

[0028] The rod portion 120 has several first limiting protrusions 121 protruding from one end near the protrusion 130 for limiting the spiral flat wire spring 2. A second inclined surface 122 is formed on each of the first limiting protrusions 121. The rod portion 120 also has several limiting grooves 123 recessed for axially limiting the spiral flat wire spring 2. When the spiral flat wire spring 2 is assembled onto the rod portion 120, it is first fitted onto the opposite end of the protrusion 130. When the spiral flat wire spring 2 is fitted onto the first limiting protrusion 121, it can be rotated to pass around the first limiting protrusion 121, or it can be slightly expanded by passing through the second inclined surface 122 to complete the fitting.

[0029] The rod body 120 is also surrounded by several grooves 125 to increase rigidity. Here, the length of the rubber rod 1 is usually relatively long, and the rod body 120 is relatively thin. In order to avoid accidental damage during operation, grooves 125 are specially made along the axial direction on the rod body 120 to strengthen the overall rigidity and make the rod body 120 less prone to breakage.

[0030] A transmission surface 111 is formed on the transmission shaft portion 110, and a snap-fit ​​groove 112 is also formed on the transmission surface 111. Here, the transmission surface 111 and the snap-fit ​​groove 112 are used to snap-fit ​​with the external powder box drive portion to improve transmission efficiency.

[0031] The powder outlet sleeve 3 is formed with a sleeve hole 320 for the spiral flat wire spring 2 to pass through; the powder outlet sleeve 3 is also provided with a fixing part 330 for fixed connection with the outside.

[0032] The powder outlet sleeve 3 includes a first powder outlet body 31 and a second powder outlet body 32 assembled together with the first powder outlet body 31. A receiving groove 40 for accommodating the spiral flat wire spring 2 is formed between the first powder outlet body 31 and the second powder outlet body 32. The fixing part 330 is disposed on the second powder outlet body 32.

[0033] Combination Figure 5 As shown in Embodiment 2 of this utility model, the rod body 120 of the rubber rod 1 also has several protruding second limiting protrusions 126 for limiting the spiral flat wire spring 2, so that the operator can adjust the number of turns (i.e., density) of the spiral flat wire spring 2 between two adjacent second limiting protrusions 126. Specifically, if it is necessary to increase the density of the spiral flat wire spring 2 at the front end of the rod body 120 for stirring, the front end of the spiral flat wire spring 2 can be compressed and limited by the second limiting protrusions 126, so that the number of turns of the spiral flat wire spring 2 between two adjacent second limiting protrusions 126 can be increased. This adjustment can adapt to the stirring of various powders, so that this utility model can be widely applied to the stirring structures of various copiers, printers, and food mixers. In this embodiment, except for the structure of the rod body 120, which is different from that in Embodiment 1, the rest of the structure is the same, and will not be described in detail here.

[0034] In summary, this invention replaces the traditional integrated spiral plastic structure with a spiral flat wire spring 2. The spiral flat wire spring 2, made of coiled flat wire, is fitted onto the plastic rod 1, effectively separating the plastic rod 1 from the spiral structure. The plastic rod 1 can be manufactured separately and then assembled, significantly reducing the cost of plastic molds and the production cost of the mixing structure. This makes it suitable for widespread application in the mixing structures of various copiers, printers, and food mixers. Furthermore, compared to existing structures, the spiral flat wire spring 2 in this invention is made of metal, which offers better wear resistance than existing plastic materials. Moreover, the spiral flat wire spring 2 is easy to bend, compress, and stretch, exhibiting excellent plasticity and adaptability to various toner cartridge shapes.

[0035] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A stirring structure with a flat wire spring, characterized in that, include: The plastic rod (1) has a drive shaft (110) formed at one end for connecting with the powder box drive unit, and a positioning groove (131) is also formed on the plastic rod (1) along the long axis direction. A spiral flat wire spring (2) is sleeved around the outer periphery of the rubber rod (1) and used for stirring powder. One end of the spiral flat wire spring (2) is bent into a bent part (210) for engaging with the positioning groove (131). The powder discharge sleeve (3) is sleeved on the end of the spiral flat wire spring (2), and the powder discharge sleeve (3) is provided with a powder discharge hole (310) for discharging powder.

2. The stirring structure with a flat wire spring according to claim 1, characterized in that: The rubber rod (1) includes a drive shaft portion (110), a rod body portion (120) integrally formed with the drive shaft portion (110) and used to pass through the helical flat wire spring (2), and a protrusion portion (130) protruding between the drive shaft portion (110) and the rod body portion (120) and used to prevent the helical flat wire spring (2) from coming outward, wherein a positioning groove (131) is axially formed on the protrusion portion (130).

3. The stirring structure with a flat wire spring according to claim 2, characterized in that: The protrusion (130) is formed with an extended stop (132) for preventing the bent part (210) from falling out of the positioning groove (131); the protrusion (130) is also formed with several hollow grooves (133) for reducing weight.

4. The stirring structure with a flat wire spring according to claim 3, characterized in that: The extension block (132) is also provided with a first inclined surface (1321) to facilitate the bending part (210) to slide into the positioning groove (131).

5. A stirring structure with a flat wire spring according to claim 2, characterized in that: The rod body (120) has several first limiting protrusions (121) protruding from one end near the protrusion (130) for limiting the spiral flat wire spring (2), and a second inclined surface (122) is formed on the first limiting protrusion (121); the rod body (120) also has several limiting grooves (123) recessed for axially limiting the spiral flat wire spring (2).

6. A stirring structure with a flat wire spring according to any one of claims 2-5, characterized in that: A transmission surface (111) is formed on the transmission shaft (110), and a snap-fit ​​groove (112) is also provided on the transmission surface (111).

7. A stirring structure with a flat wire spring according to claim 6, characterized in that: The rod body (120) is also surrounded by several grooves (125) to increase rigidity.

8. A stirring structure with a flat wire spring according to claim 7, characterized in that: The powder outlet sleeve (3) is formed with a sleeve hole (320) for the spiral flat wire spring (2) to pass through; the powder outlet sleeve (3) is also provided with a fixing part (330) for fixed connection with the outside.

9. A stirring structure with a flat wire spring according to claim 8, characterized in that: The powder outlet sleeve (3) includes a first powder outlet body (31) and a second powder outlet body (32) assembled together with the first powder outlet body (31). A receiving groove (40) for accommodating the spiral flat wire spring (2) is formed between the first powder outlet body (31) and the second powder outlet body (32). The fixing part (330) is disposed on the second powder outlet body (32).

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