Pressurization device for toner cartridge and toner cartridge

2:

• The pressurization device, as recited in claim 1, further comprising:
• an outer cover, wherein:
• an elliptical annular groove facing the toner cartridge is formed on the outer cover;
• a center line of the elliptical annular groove and an axis of the toner cartridge are collinear;
• wherein:
• a slide portion is arranged at a side of the inner cover, closing to the elliptical annular groove;
• a sliding slot, which penetrates through the slide portion in an axial direction and extends along a radial direction, is provided on the slide portion;
• a middle part of the sliding member is able to slide in the sliding slot;
• a second end of the sliding member is slidably embedded in the elliptical annular groove;
• when the slide portion rotates with the toner cartridge relative to the outer cover, the sliding member slides back and forth in the sliding slot.

3:

• The pressurization device, as recited in claim 2, wherein the inner cover comprises:
• a cap portion, which is arranged on the toner cartridge;
• and
• a channel portion, which protrudes from a side, away from the toner cartridge, of the cap portion, wherein:
• the channel portion has a first air vent formed at a joint with the cap portion, and a second air vent facing outward;
• the fixed end of the airbag is fixed on the channel portion, the airbag opening corresponds to the second air vent, and the second air vent is sealed by the airbag.

4:

• The pressurization device, as recited in claim 3, wherein:
• the cap portion is connected with the toner cartridge in threaded connection;
• a reversion-preventing bump is arranged at a tail end of a thread on the toner cartridge, and a reversion-preventing opening is provided on the cap portion;
• when the cap portion is completely connected with the toner cartridge, the reversion-preventing opening exactly matches with the reversion-preventing bump.

5:

• The pressurization device, as recited in claim 3, wherein:
• a tubular connection part is formed on the channel portion and extends outward along a radial direction of the toner cartridge;
• an opening of the connection part is the second air vent;
• the airbag is bell-shaped, and a bottom opening of the airbag is the airbag opening;
• the airbag tightly clamps the connection part.

6:

• The pressurization device, as recited in claim 5, wherein:
• an outer circumferential surface of the connection part is inward concave to form an annular second clamping groove;
• a bottom edge of an inner circumferential surface of the airbag protrudes inward to form an annular protruding part;
• the protruding part tightly fits the second clamping groove.

8:

• The pressurization device, as recited in claim 2, wherein:
• the outer cover is cylindrical;
• a plurality of clamping pieces are arranged at a first end of the outer cover, closing to the toner cartridge;
• an outer circumferential surface of the inner cover is inward concave to form an annular first clamping groove;
• when the inner cover except the cap portion is arranged inside the outer cover, the clamping pieces rotationally fits the first clamping groove.

9:

• The pressurization device, as recited in claim 8, wherein:
• an outer cover end face is formed at a second end of the outer cover, away from the toner cartridge;
• an end face opening is provided on the outer cover end face;
• an outer cover cap is arranged at the end face opening;
• the outer cover cap is integrated with the outer cover end face through ultrasonic welding;
• a protruding inner annular part is formed on the outer cover cap;
• an outer annular part, opposite to the inner annular part, is formed at an edge of the end face opening;
• the inner annular part and the outer annular part are both elliptical;
• and the elliptical annular groove is formed between the inner annular part and the outer annular part.

10:

• The pressurization device, as recited in claim 9, wherein:
• a first limiting convex edge, which protrudes inward, is arranged on the outer annular part;
• a second limiting convex edge, which protrude outward, is arranged on the inner annular part;
• the first limiting convex edge corresponds to the second limiting convex edge, for axially positioning the second end of the sliding member.

11:

• The pressurization device, as recited in claim 10, wherein:
• a threaded hole is provided at the second end of the sliding member;
• a screw is mounted in the threaded hole;
• a square platform is arranged at a side of the sliding member, where the second end is located;
• the square platform matches with inner sides of the sliding slot;
• a circular platform is between a head and a threaded portion of the screw;
• the circular platform is limited between the first limiting convex edge and the second limiting convex edge.

14:

• The pressurization device, as recited in claim 1, wherein:
• the sliding member comprises an annular portion and a rod portion;
• a cylindrical airbag bump is arranged at the free end of the airbag;
• the annular portion tightly clamps the airbag bump;
• and the rod portion is connected to a radial side of the annular portion.