CN201145821Y - Powder feeding device for toner cartridge - Google Patents

Abstract

A powder feeding device for a toner cartridge is arranged inside a toner cartridge. The toner cartridge has an outlet at one end. The powder feeding device includes a cone adjacent to the outlet. The cross-sectional area of the cone gradually decreases toward the outlet. The outer surface of the cone has at least one convex portion and at least one concave portion. The convex portion can be spiral or linear, and the end of the convex portion away from the outlet is in contact with the peripheral wall of the toner cartridge. Therefore, when the powder feeding device rotates with the toner cartridge, the toner powder can be efficiently transported to the outlet. The powder feeding device has a simple structure and low manufacturing cost.

Description

Powder feeding device for toner cartridge

technical field

The utility model is related to the toner box, in particular to a powder feeding device for the toner box, which has a simple structure and good powder feeding efficiency.

Background technique

The general toner cartridge has a barrel, an outlet is located at one end of the barrel, and a powder feeding device is accommodated in the barrel, and the barrel is usually horizontally arranged in an electronic imaging device, so that the barrel The carbon powder in the body is sent out through the outlet, and the inner wall of the cylinder is provided with spiral ribs. As the cylinder continues to rotate, the carbon powder can be pushed by the ribs and move toward the outlet, and the powder feeding device can be located in the cylinder The toner in the lower part of the cylinder is transferred to the outlet near the axis of the cylinder.

The known powder discharge device, as disclosed in U.S. Patent No. 6,137,978, has two scraping members (scraping members) to guide the carbon powder to two inclined surfaces (conveying slopes), and then guides to the outlet. The structure of the powder discharge device is complicated and the manufacturing cost is high. high.

Utility model content

One purpose of the present utility model is to provide a powder feeding device for a toner cartridge, which has a simple structure.

Another object of the utility model is to provide a powder feeding device for the toner cartridge, which has high powder feeding efficiency.

In order to achieve the purpose of the previous disclosure, the utility model provides a powder feeding device for a toner cartridge. One end of the toner cartridge has an outlet. It is characterized in that the powder feeding device includes:

A cone is accommodated in the toner cartridge and adjacent to the outlet. The cross-sectional area of the cone gradually decreases toward the outlet. The outer surface of the cone has one of at least one convex portion and at least one concave portion.

Wherein the convex portion of the cone is spiral.

Wherein the convex portion of the cone is linear.

Wherein the toner cartridge has a long axis direction, and the protrusion extends from the cone along the long axis direction.

Wherein the end of the protrusion away from the outlet of the toner cartridge abuts against the peripheral wall of the toner cartridge.

Wherein the end of the convex part away from the outlet of the toner cartridge is extended with a scraper abutting against the peripheral wall of the toner cartridge.

Wherein the number of the protrusions is three.

Wherein the protrusions and the recesses are arranged in a staggered manner.

The utility model provides a powder feeding device for a toner cartridge. One end of the toner cartridge has an outlet, and the feature is that the powder feeding device includes:

A cone is accommodated in the toner cartridge and adjacent to the outlet, the cross-sectional area of the cone gradually decreases toward the outlet, and at least one of the outer surfaces of the cone is deformed.

The powder feeding device for the toner box provided by the utility model has a simple structure.

The powder feeding device for the toner box provided by the utility model has high powder feeding efficiency.

Description of drawings

In order to explain in detail the structure and characteristics of the present utility model, the following four preferred embodiments are described in conjunction with the accompanying drawings as follows, wherein:

Fig. 1 is the front view of the first preferred embodiment of the utility model;

Fig. 2 is an exploded perspective view of the first preferred embodiment of the utility model;

Fig. 3 is a sectional view along the direction 3-3 in Fig. 1;

Fig. 4 is a side view of the powder feeding device provided by the first preferred embodiment of the present invention;

Fig. 5 is a perspective view of the powder feeding device provided by the second preferred embodiment of the present invention;

Fig. 6 is a perspective view of the powder feeding device provided by the third preferred embodiment of the present invention;

Fig. 7 is a perspective view of the powder feeding device provided by the fourth preferred embodiment of the present invention.

Detailed ways

Please refer to Fig. 1 to Fig. 4, the powder feeding device 10 provided by the first preferred embodiment of the present invention is used to be located in a toner cartridge 12, and the toner cartridge 12 has a chamber 14 for carbon powder ( not shown in the figure), the right end of the toner cartridge 12 has an outlet 16, and the left end uses a cover 18 to close the chamber 14, the peripheral wall 19 of the toner cartridge 12 adjacent to the outlet 16 is stepped, the toner cartridge 12 The powder box 12 extends along a long axis A as a whole.

The powder feeding device 10 is accommodated in the chamber 14 of the toner cartridge 12 and adjacent to the outlet 16. The powder feeding device 10 has a cone 20, which is a cone and its cross-sectional area faces the The direction of the outlet 16 gradually decreases, and the cross-sectional area refers to the area surrounded by the outer edge of the cone 20. The outer surface 21 of the cone 20 has three convex portions 24, and three concave portions 26 are opposite to the convex portions 24. , the protrusions 24 and the recesses 26 are arranged in a staggered manner, wherein the protrusions 24 are helical and extend from the cone 20 along the long-axis direction A, and the protrusions 24 are adjacent to One end (i.e. the right end) of the outlet 16 is respectively formed into a stepped shape to match the shape of the peripheral wall 19 of the toner cartridge 12, and one end (i.e. the left end) of the protrusions 24 away from the outlet 16 is respectively extended to have a scraper 25 affixed thereto. On the peripheral wall 19 of the toner cartridge 12 , the inner surface 28 of the cone 20 is a complete cone.

When the toner cartridge 12 is mounted on an electronic imaging device (not shown), the long-axis direction A is generally horizontal, and the carbon powder is located at the bottom of the toner cartridge 12 due to gravity. When the toner cartridge 12 is driven to rotate in the direction of the arrow in Figure 2, the powder feeding device 10 will rotate together with the toner cartridge 12, the scraper 25 can guide the toner into the concave portion 26, and along the spiral concave portion 26 Moving on, finally the powder feeding device 10 can deliver the toner to the outlet 16 of the toner cartridge 12 .

Because the structure of the powder feeding device 10 provided by the utility model is quite simple, it can be formed by plastic injection, and its manufacturing cost can be much lower than the known structure. In addition, because the end of the convex part 24 of the powder feeding device 10 is attached to the The peripheral wall 19 of the toner cartridge 12 forms a nearly airtight channel between the cone 20, the convex parts 24 and the peripheral wall 19, for conveying the carbon powder introduced by the scraper blade 25, and its powder feeding efficiency is extremely high. High, which is another advantage of the powder feeding device provided by the utility model.

Based on the creative spirit of the present utility model, the structure of the powder feeding device can have various changes, as shown in Figure 5, it is the powder feeding device 30 provided by the second preferred embodiment of the present utility model, and its structure is the same as that of the aforementioned first embodiment Example is roughly the same, only the convex portion 34 of the cone 32 does not extend to the peripheral wall of the toner cartridge, on the contrary, the convex portion 34 only extends a small distance from the cone 32, so that the purpose of conveying carbon powder can also be achieved. And the structure is more concise.

As shown in Figure 6 again, it is the powder feeding device 40 provided by the third preferred embodiment of the present invention, which includes a cone 42, and eight convex parts 44 extend from the cone 42, and these convex parts 44 It is linear, and the end E of these convex parts 44 away from the outlet of the toner cartridge is used to stick against the peripheral wall of the toner cartridge, which can replace the structure of the scraper in the above two embodiments, thus the powder feeding The device 40 also has the function of conveying carbon powder.

Also as shown in Figure 7, it is the 50 provided by the fourth preferred embodiment of the present utility model, which directly forms a plurality of convex parts 54 and a plurality of concave parts 56 arranged in a staggered manner on a cone 52, and these convex parts 54 and the The concave portions 56 are all linear.

In addition, the shape of the cone of the powder feeding device can also be changed, as long as its cross-sectional area gradually decreases toward the direction of the outlet, and the number, shape and extension distance of the protrusions are not limited, as long as the cone Having at least one convex portion or/and at least one concave portion can achieve the purpose of the utility model; in addition, the convex portions 24, 34, 44, 54 and the concave portions 26, 56 can be regarded as the cones 20, 56 The deformation of the outer surfaces of 32, 42, and 52, that is, at least one deformation of the outer surface of the cone, can achieve the purpose of the utility model, and all such structural changes that are easy to think of should be the claims of the utility model covered by the scope.

Claims (9)

1. A powder feeding device for a toner cartridge, one end of the toner cartridge has an outlet, and it is characterized in that the powder feeding device includes: A cone is accommodated in the toner cartridge and adjacent to the outlet. The cross-sectional area of the cone gradually decreases toward the outlet. The outer surface of the cone has one of at least one convex portion and at least one concave portion. 2. The powder feeding device for toner cartridge according to claim 1, wherein the convex portion of the cone is in a spiral shape. 3. The powder feeding device for a toner cartridge according to claim 1, wherein the convex portion of the cone is linear. 4 . The powder feeding device for a toner cartridge according to claim 1 , wherein the toner cartridge has a long axis direction, and the protrusion extends from the cone along the long axis direction. 5 . The powder feeding device for a toner cartridge according to claim 1 , wherein the end of the protrusion away from the outlet of the toner cartridge abuts against the peripheral wall of the toner cartridge. 6 . 6 . The powder feeding device for a toner cartridge as claimed in claim 1 , wherein a scraper is extended from the end of the convex portion away from the outlet of the toner cartridge to abut against the peripheral wall of the toner cartridge. 7 . 7. The powder feeding device for toner cartridge according to claim 1, wherein the number of the convex parts is three. 8 . The powder feeding device for toner cartridge according to claim 1 , wherein the protrusions and the recesses are arranged in a staggered manner. 9. A powder feeding device for a toner cartridge, one end of the toner cartridge has an outlet, it is characterized in that the powder feeding device includes: A cone is accommodated in the toner cartridge and adjacent to the outlet, the cross-sectional area of the cone gradually decreases toward the outlet, and at least one of the outer surfaces of the cone is deformed.

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