Powder supply device for carbon powder tank

Abstract

The utility model discloses a powder supply device for a carbon powder tank, which comprises an outer cover, an outer powder outlet is arranged on the side wall of the outer cover, an inner cover is arranged in the outer cover, an inner powder outlet is arranged at the position of the inner cover corresponding to the outer powder outlet, and a movable sealing mechanism capable of sealing the inner powder outlet is arranged on one side of the inner powder outlet. And an auxiliary elastic mechanism capable of opening the movable sealing mechanism when the movable sealing mechanism rotates to the outer toner outlet is arranged in the inner cover. In order to overcome the defects in the prior art, the utility model provides the powder supply device for the carbon powder tank, which is simple in structure, and can effectively ensure that the movable sealing mechanism can be opened smoothly so as to ensure that carbon powder is discharged normally.

Description

Technical Field

[0001] The utility model relates to the technical field of printing consumables, and particularly relates to a powder feeder for a toner cartridge. Background Art

[0002] An electrophotographic imaging device usually has an image processing unit and a developing unit. Using a developer such as toner provided by the developing unit, an electrostatic latent image formed on the image processing unit is developed to form a visible image on a medium such as paper. Among them, toner, as a consumable, needs to be continuously replenished into the electrophotographic imaging device. Generally, a toner container having a certain amount of toner accommodated therein is detachably installed in the developing unit of the electrophotographic imaging device to provide toner to the developing unit.

[0003] For the existing toner container used to provide toner to the developing unit, due to design defects, the cover plate for controlling the toner outlet will have a problem that it is difficult to open after being used for a period of time, thus seriously affecting the normal powder output. This causes the machine to report a fault and affects the normal use.

[0004] Therefore, the existing powder feeder for a toner cartridge needs to be further improved. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a powder feeder for a toner cartridge with a simple structure, which can effectively ensure that the movable sealing mechanism can be smoothly opened, thus ensuring the normal powder output of the toner.

[0006] To achieve the above purpose, the utility model adopts the following scheme: A powder feeder for a toner cartridge includes an outer cover. An outer powder outlet is provided on the side wall of the outer cover. An inner cover is provided inside the outer cover. An inner powder outlet is provided at a position corresponding to the outer powder outlet on the inner cover. A movable sealing mechanism capable of closing the inner powder outlet is provided on one side of the inner powder outlet. An auxiliary elastic mechanism capable of opening the movable sealing mechanism when the movable sealing mechanism rotates to the outer powder outlet is provided inside the inner cover.

[0007] As another improvement of the powder feeder for a toner cartridge of the utility model, the movable sealing mechanism includes hinge shafts symmetrically arranged in the vertical direction on one side of the inner powder outlet. A cover plate capable of closing the inner powder outlet is hinged on the hinge shafts.

[0008] As another improvement of the powder feeder for a toner cartridge of the utility model, a sealing sponge is provided on the outer wall of the inner cover around the inner powder outlet.

[0009] As another improvement of a powder feeder for a toner cartridge of the present utility model, the auxiliary elastic mechanism includes an elastic sheet disposed on the outer wall of the inner cover between two hinge shafts. The rear end of the elastic sheet is wound around the outer wall of the inner cover. A support gasket is provided on the outer wall of the inner cover on one side of the hinge shaft. The front end of the elastic sheet extends between the cover plate and the inner powder outlet and abuts against the inner wall of the cover plate. The front part of the elastic sheet abuts against the outer end of the support gasket.

[0010] As another improvement of a powder feeder for a toner cartridge of the present utility model, a positioning step is provided inside the outer cover. The inner cover includes an inner cover body. An inner convex platform is provided at the center of the upper end surface of the inner cover body. The outer wall of the inner convex platform is smaller than the outer diameter of the inner cover body. The inner powder outlet and the hinge shafts are both provided on the outer wall of the inner convex platform. A sealing gasket is provided between the upper end surface and the positioning step. A plurality of positioning buckles are spaced apart and provided inside the opening end of the outer cover. The end of the inner cover body presses against the positioning buckles.

[0011] As another improvement of a powder feeder for a toner cartridge of the present utility model, an installation ring is provided inside the inner cover, and a powder guiding sheet is provided on the installation ring.

[0012] As another improvement of a powder feeder for a toner cartridge of the present utility model, an installation convex column is provided inside the inner cover. Positioning installation holes are provided at positions corresponding to the installation ring and the installation convex column. The installation convex column is disposed in the positioning installation holes.

[0013] As another improvement of a powder feeder for a toner cartridge of the present utility model, the rear end of the elastic sheet is fixed to the outer wall of the inner cover by a pressing block.

[0014] As another improvement of a powder feeder for a toner cartridge of the present utility model, the cover plate includes a plate body, and a hinge hook is provided at a position corresponding to the hinge shaft on one side of the plate body.

[0015] As another improvement of a powder feeder for a toner cartridge of the present utility model, the auxiliary elastic mechanism includes an elastic sheet disposed on the outer wall of the inner cover between two hinge shafts. The rear end of the elastic sheet is wound around the outer wall of the inner cover. A support gasket is provided on the outer wall of the inner cover on one side of the hinge shaft. A receiving groove is provided inside one end of the cover plate close to the hinge shaft. The elastic sheet is inserted into the receiving groove. The front part of the elastic sheet abuts against the outer end of the support gasket.

[0016] In summary, the beneficial effects of the present utility model compared with the prior art are as follows: The structure of the present utility model is simple. Through the auxiliary elastic mechanism, it can effectively ensure that the movable sealing mechanism can still be smoothly opened after long-term use, thereby ensuring normal powder output of the toner. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional schematic diagram of the present utility model.

[0018] Figure 2 is Figure 1 a partial cross-sectional schematic diagram of.

[0019] Figure 3 This is one of the schematic diagrams of the inner cover, movable sealing mechanism, and auxiliary elastic mechanism of the present utility model.

[0020] Figure 4 This is the second schematic diagram of the inner cover, movable sealing mechanism, and auxiliary elastic mechanism of the present utility model.

[0021] Figure 5 This is the internal structure schematic diagram of the inner cover of the present utility model.

[0022] Figure 6 This is a three-dimensional schematic diagram of the outer cover of the present utility model.

[0023] In the figure: 1. Outer cover; 2. Outer powder outlet; 3. Inner cover; 31. Inner cover body; 32. Upper end face; 33. Inner convex platform; 34. Mounting convex column; 4. Inner powder outlet; 5. Movable sealing mechanism; 51. Hinge shaft; 52. Cover plate; 521. Plate body; 522. Hinge hook; 6. Auxiliary elastic mechanism; 61. Elastic sheet; 62. Support gasket; 7. Sealing sponge; 8. Positioning step; 9. Sealing gasket; 10. Positioning buckle; 11. Mounting ring; 12. Powder guiding sheet; 13. Positioning mounting hole; 14. Pressing block. Specific embodiments

[0024] The following further elaborates on the above and other technical features and advantages of the present utility model in conjunction with the accompanying drawings.

[0025] The following describes the preferred embodiments of the present utility model with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present utility model and do not limit the protection scope of the present utility model.

[0026] It should be noted that in the description of the present utility model, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0027] In addition, it should be noted that in the description of the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] As Figures 1-6 shown, a powder feeder for a toner cartridge includes an outer cover 1. An outer powder outlet 2 is provided on the side wall of the outer cover 1. An inner cover 3 is provided inside the outer cover 1. An inner powder outlet 4 is provided at a position corresponding to the outer powder outlet 2 in the inner cover 3. An active sealing mechanism 5 capable of closing the inner powder outlet 4 is provided on one side of the inner powder outlet 4. An auxiliary elastic mechanism 6 capable of opening the active sealing mechanism 5 when the active sealing mechanism 5 rotates to the outer powder outlet 2 is provided inside the inner cover 3. The structure of the present utility model is simple. Through the auxiliary elastic mechanism, it can effectively ensure that the active sealing mechanism can still be smoothly opened after long-term use, thereby ensuring normal powder output of the toner.

[0029] The active sealing mechanism 5 of the present utility model includes hinge shafts 51 symmetrically arranged along the up and down direction on one side of the inner powder outlet 4. A cover plate 52 capable of closing the inner powder outlet 4 is hinged on the hinge shafts 51. The auxiliary elastic mechanism 6 is arranged between the two hinge shafts 51. In one implementation manner of the present utility model, the cover plate 52 and the hinge shafts 51 can be separately arranged. In this way, the cover plate 52 includes a plate body 521, and hinge hooks 522 are provided at positions corresponding to the hinge shafts 51 on one side of the plate body 521. This makes the installation and disassembly of the cover plate 52 and the hinge shafts 51 more convenient.

[0030] In the present utility model, a sealing sponge 7 is provided on the outer wall of the inner cover 3 around the inner powder outlet 4. The sealing sponge 7 is an elastic sealing sponge. In the existing powder feeder for a toner cartridge, the cover plate 52 is only bounced open by the action of the sealing sponge 7. However, after a long time of use, the elasticity of the sealing sponge 7 weakens, and problems such as the cover plate 52 being difficult to open or not fully opened may occur, resulting in abnormal powder output. In the present utility model, the sealing sponge 7 and the auxiliary elastic mechanism 6 act together, so that the cover plate 52 can still be effectively and fully opened after long-term use.

[0031] The auxiliary elastic mechanism 6 of the present utility model includes an elastic sheet 61 disposed on the outer wall of the inner cover 3 between two hinge shafts 51. The rear end of the elastic sheet 61 is wound around the outer wall of the inner cover 3. A support gasket 62 is provided on the outer wall of the inner cover 3 on one side of the hinge shaft 51. The front end of the elastic sheet 61 extends between the cover plate 52 and the inner powder outlet 4 and abuts against the inner wall of the cover plate 52. The front part of the elastic sheet 61 abuts against the outer end of the support gasket 62. In one embodiment of the present utility model, the rear end of the elastic sheet 61 is fixed to the outer wall of the inner cover 3 by a pressing block 14. In the present utility model, the rear end of the elastic sheet 61 can also be fixedly arranged on the outer wall of the inner cover 3 by gluing. In the present utility model, a good outward elastic force is provided for the cover plate 52 by the elastic sheet 61. When the cover plate 52 is completely misaligned with the outer powder outlet 2, due to the restriction of the inner wall of the outer cover 1, at this time, the cover plate 52 will overcome the elastic forces of the elastic sheet 61 and the sealing sponge 7 and form a good seal with the sealing sponge 7. When the inner cover 3 rotates and the cover plate 52 falls into the outer powder outlet 2, since the cover plate 52 loses the restriction of the inner wall of the outer cover 1, under the elastic forces of the elastic sheet 61 and the sealing sponge 7, the cover plate 52 can be opened well.

[0032] The present utility model is provided with a positioning step 8 in the outer cover 1. The inner cover 3 includes an inner cover body 31. A central position of the upper end surface 32 of the inner cover body 31 is provided with an inner boss 33. The outer wall of the inner boss 33 is smaller than the outer diameter of the inner cover body 31. The inner powder outlet 4 and the hinge shafts 51 are both arranged on the outer wall of the inner boss 33. A sealing gasket 9 is provided between the upper end surface 32 and the positioning step 8. A plurality of positioning buckles 10 are arranged at intervals in the inner opening end of the outer cover 1. The end of the inner cover body 31 is pressed against the positioning buckles 10. The present utility model makes the inner cover 3 effectively restricted in the outer cover 1 through the mutual cooperation of the positioning step 8 and the positioning buckles 10.

[0033] The present utility model is provided with an installation ring 11 in the inner cover 3, and a powder guiding sheet 12 is provided on the installation ring 11. The present utility model is provided with an installation convex column 34 in the inner cover 3. Positioning installation holes 13 are provided at corresponding positions of the installation ring 11 and the installation convex column 34. The installation convex column 34 is arranged in the positioning installation holes 13. An included angle is formed between the powder guiding sheet 12 and the plane of the installation ring 11 of the present utility model, so that when the inner cover 3 drives the installation ring 11 to rotate, the toner can enter the inner powder outlet 4 more smoothly under the action of the powder guiding sheet 12.

[0034] Another embodiment of the auxiliary elastic mechanism 6 of the present utility model, the auxiliary elastic mechanism 6 includes an elastic piece 61 disposed on the outer wall of the inner cover 3 between two hinge shafts 51, the rear end of the elastic piece 61 is wound around the outer wall of the inner cover 3, a support gasket 62 is provided on the outer wall of the inner cover 3 on one side of the hinge shaft 51, a receiving groove is provided in the inner end of the cover plate 52 near the hinge shaft 51, the elastic piece 61 is inserted into the receiving groove, and the front portion of the elastic piece 61 abuts against the outer end of the support gasket 62.

[0035] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A powder feeder for a carbon powder canister, comprising an outer cover (1), a powder outlet (2) being provided on a side wall of the outer cover (1), characterized in that: An inner cover (3) is provided inside the outer cover (1); an inner powder outlet (4) is provided at a position of the inner cover (3) corresponding to the powder outlet (2); a movable sealing mechanism (5) capable of closing the inner powder outlet (4) is provided on one side of the inner powder outlet (4); and an auxiliary elastic mechanism (6) capable of opening the movable sealing mechanism (5) when the movable sealing mechanism (5) rotates to the powder outlet (2) is provided inside the inner cover (3).

2. A powder feeder for a carbon powder canister according to claim 1, characterized in that: The movable sealing mechanism (5) comprises a hinge shaft (51) symmetrically arranged along the up-down direction on one side of the inner powder outlet (4), and a cover plate (52) capable of closing the inner powder outlet (4) is hingedly connected to the hinge shaft (51).

3. A powder feeder for a carbon powder canister according to claim 1 or 2, characterized in that: A sealing sponge (7) is provided on the outer wall of the inner cover (3) around the inner powder outlet (4).

4. A powder feeder for a carbon powder canister according to claim 2, characterized in that: The auxiliary elastic mechanism (6) comprises an elastic sheet (61) arranged on the outer wall of the inner cover (3) between the two hinge shafts (51); the rear end of the elastic sheet (61) is wound around the outer wall of the inner cover (3); a supporting gasket (62) is provided on the outer wall of the inner cover (3) on one side of the hinge shaft (51); the front end of the elastic sheet (61) extends between the cover plate (52) and the inner powder outlet (4) and abuts against the inner wall of the cover plate (52); and the front part of the elastic sheet (61) abuts against the outer end of the supporting gasket (62).

5. A powder feeder for a carbon powder canister according to claim 1, characterized in that: A positioning step (8) is provided inside the outer cover (1); the inner cover (3) comprises an inner cover body (31); an inner boss (33) is provided at the center of the upper end surface (32) of the inner cover body (31); the outer wall of the inner boss (33) is smaller than the outer diameter of the inner cover body (31); the inner powder outlet (4) and the hinge shaft (51) are both arranged on the outer wall of the inner boss (33); a sealing gasket (9) is provided between the upper end surface (32) and the positioning step (8); a plurality of positioning buckles (10) are arranged at intervals inside the opening end of the outer cover (1); and the end of the inner cover body (31) presses against the positioning buckle (10).

6. A powder feeder for a carbon powder canister according to claim 1, characterized in that: A mounting ring (11) is provided inside the inner cover (3), and a powder guide sheet (12) is provided on the mounting ring (11).

7. A powder feeder for a carbon powder canister according to claim 6, characterized in that: A mounting boss (34) is provided in the inner cover (3), a positioning mounting hole (13) is provided at a position of the mounting ring (11) corresponding to the mounting boss (34), and the mounting boss (34) is arranged in the positioning mounting hole (13).

8. A powder feeder for a carbon powder canister according to claim 4, characterized in that: The rear end of the elastic sheet (61) is fixed to the outer wall of the inner cover (3) via a pressing block (14).

9. A powder feeder for a carbon powder canister according to claim 2, characterized in that: The cover plate (52) comprises a plate body (521), and a hinge hook (522) is provided at a position corresponding to the hinge shaft (51) on one side of the plate body (521).

10. A powder feeder for a carbon powder canister according to claim 2, characterized in that: The auxiliary elastic mechanism (6) comprises an elastic sheet (61) arranged on the outer wall of the inner cover (3) between the two hinge shafts (51); the rear end of the elastic sheet (61) is wound around the outer wall of the inner cover (3); a supporting gasket (62) is provided on the outer wall of the inner cover (3) on one side of the hinge shaft (51); a receiving groove is provided in one end of the cover plate (52) close to the hinge shaft (51); the elastic sheet (61) is inserted into the receiving groove; the front part of the elastic sheet (61) abuts against the outer end of the supporting gasket (62).

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