CN209879241U

CN209879241U - Processing box

Info

Publication number: CN209879241U
Application number: CN201920883010.2U
Authority: CN
Inventors: 梁永; 肖创; 黄乐
Original assignee: HUIWEI PRINTER CONSUMABLES CO Ltd
Current assignee: HUIWEI PRINTER CONSUMABLES CO Ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2019-12-31
Anticipated expiration: 2029-06-11

Abstract

A process cartridge detachably mountable to an image forming apparatus, the process cartridge including a powder hopper containing a developer; a hollow push rod provided with a developer inlet and a developer outlet; the developer outlet can be communicated with the inner cavity of the powder bin, and a sealing piece is arranged at the developer outlet; the push plate is connected with the push rod; the push rod and the push plate can be arranged in the powder bin in an axially moving mode along the powder bin, and one end, far away from the push plate, of the push rod can extend out of the powder bin. The utility model discloses a hollow push rod, the both ends of push rod set up developer import and developer export, the push rod forms a passageway to adding powder in the powder storehouse after packing into the powder storehouse of processing box, the developer can be followed the developer import of push rod and poured into, in the powder storehouse of processing box is flowed into from the developer export of push rod, advance/export through setting up great large size developer on the push rod, thereby improve filling efficiency, and reduction in production cost can not influence the original structure of processing box moreover.

Description

Processing box

Technical Field

The utility model relates to a processing box used in an image forming device.

Background

An image forming apparatus is an apparatus, such as a copying machine, a printer, a facsimile machine, etc., which forms an image on a recording material using the principle of electrophotographic image formation. An image forming apparatus generally includes a main body and a process cartridge detachably mounted in the main body, and the process cartridge develops an electrostatic latent image formed on a photosensitive device in a developing unit by supplying a developer to the developing unit in the image forming apparatus to form a visible image on a medium such as paper. Among them, carbon powder (developer) is a consumable product and needs to be continuously replenished. It is common to add developer to the developing unit using a process cartridge that can accommodate a certain amount of developer. The existing processing box is generally provided with a powder adding port on the wall of a powder bin, and developer is added into the powder bin through the powder adding port. However, in order to ensure the sealing performance of the processing box and not to affect the original overall structure and appearance of the processing box, the size of the powder adding port is generally smaller, so that the filling efficiency is lower during powder adding.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a processing box of filling efficiency when can improve the powder feeding.

In order to achieve the above object, the present invention adopts the following technical solutions:

a process cartridge detachably mountable to an image forming apparatus, the process cartridge including a powder hopper containing a developer; a hollow push rod provided with a developer inlet and a developer outlet; the developer outlet can be communicated with the inner cavity of the powder bin, and a sealing piece is arranged at the developer outlet; the push plate is connected with the push rod; the push rod and the push plate can be arranged in the powder bin in an axially moving mode along the powder bin, and one end, far away from the push plate, of the push rod can extend out of the powder bin.

According to the above technical scheme, the utility model discloses set up the cavity push rod that can realize adding the powder in the powder storehouse of processing box, and the both ends of push rod set up developer import and developer export, the push rod is packed into behind the powder storehouse of processing box, can with the interior intercommunication of the powder storehouse of processing box, form a passageway to adding the powder in the powder storehouse, the developer can be followed the developer import of push rod and poured into, flow into the powder storehouse of processing box from the developer export of push rod, set up on the lateral wall of processing box or roof with prior art and add the powder mouth and compare, it sets up on the push rod to add the powder mouth (developer advances/export), the ingenious cavity push rod that has utilized forms and has added the powder passageway, can not influence the structure of processing box itself, can advance/export the developer aperture size design some greatly, thereby improve filling efficiency, and the production cost is reduced.

Optionally, the sealing element is a sealing plug disposed in the push rod.

The developer outlet is sealed in a plug mode, the structure is simple, and the cost is low.

More specifically, the inner diameter of the developer outlet is smaller than the inner diameter of the push rod.

The developer outlet has small inner diameter, can limit the sealing plug, and prevent the sealing plug from falling into the powder bin of the processing box due to improper operation when the sealing plug is installed.

More specifically, the push rod comprises a first rod body and a second rod body, the length of the first rod body is larger than that of the second rod body, and the joint of the first rod body and the second rod body is located at the rear part of the push rod.

More specifically, the first rod body and the second rod body are connected in a nested manner.

The push rod adopts split type structure, makes things convenient for the installation and the demolition of sealing plug. In a further scheme, the push rod is formed by the two rod bodies connected in a nested mode, the structure is simple, and production is easy.

Optionally, the sealing element at the developer outlet is a movable sealing cover for sealing the developer outlet from the outer side of the push rod, the movable sealing cover is provided with a limiting guide post extending towards the push rod, and the axis of the limiting guide post is parallel to the axis of the push rod; a through hole for the limiting guide post to pass through is formed in the push plate, and a push rod resetting piece for enabling the push rod to approach the movable seal cover is arranged between the movable seal cover and the push rod or between the movable seal cover and the push plate; the push rod and the movable sealing cover can move relatively along the axial direction, so that the developer outlet is opened or closed.

The movable sealing cover is arranged at the rear end of the push rod, and the sealing cover can automatically block the developer outlet, so that the operation during powder filling is simplified, and the efficiency is improved.

Furthermore, the limiting guide posts are symmetrically arranged on the movable sealing cover.

The symmetrical limiting guide parts can guide the relative motion between the push rod and the movable sealing cover to keep parallel and stable so as to ensure the sealing effect.

More specifically, the push rod reset piece is a spring sleeved on the limiting guide post, one end of the spring abuts against the end part of the limiting guide post through a fastener, and the other end of the spring abuts against the push rod or the push plate.

The spring is used as the push rod reset piece to drive the reset of the push rod, so that the acting force of mutual pressing between the push rod and the movable sealing plug is kept, the structure is simple, and the cost is low.

Preferably, the inner diameter of the front end surface of the developer outlet is smaller than the inner diameter of the rear end surface, and the movable sealing cover is provided with a tapered sealing part corresponding to the shape of the developer outlet.

The outlet with the shape of small front and large back is adopted, so that the flow of the developer at the developer outlet can be improved, and the filling efficiency is improved.

Further, a push rod limiting part is arranged between the push rod and the powder bin and used for limiting the axial movement of the push rod.

More specifically, the limiting part comprises at least one limiting groove arranged on the outer wall of the push rod and a limiting rod movably arranged on the front end cover of the powder bin, and when the push rod is pulled outwards to the bottom, one end of the limiting rod can extend into the limiting groove or leave the limiting groove.

Furthermore, the push rod is provided with a first capacity limiting groove and a second capacity limiting groove which respectively represent different capacity states of the powder bin, the first capacity limiting groove is positioned at the rear part of the push rod, and the second capacity limiting groove is positioned in the middle part of the push rod.

Through setting up the push rod locating part, restrict the removal of pulling out the back push rod, realize the location to the push rod. In a more specific scheme, the limiting grooves are arranged at different positions on the push rod, so that different capacity states of the powder bin can be represented, and operators can know the capacity condition in the powder bin conveniently.

Further, a seal is provided at the developer inlet.

And a sealing element is also arranged at the inlet of the developer, so that the effect of double sealing can be achieved, and the phenomenon that residual carbon powder in the push rod flows outwards to cause pollution is avoided.

Drawings

In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive effort.

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is an exploded schematic view of embodiment 1 of the present invention;

fig. 3 is a partial sectional view of embodiment 1 of the present invention;

FIG. 4 is a schematic view of the case of powdering in example 1;

fig. 5 is an exploded schematic view of a push rod according to embodiment 2 of the present invention;

fig. 6 is a partial sectional view of embodiment 2 of the present invention;

FIG. 7 is a schematic view of the case of powdering in example 2;

fig. 8 is a schematic structural view of embodiment 3 of the present invention;

fig. 9 is a schematic structural view of a powder adding assembly according to embodiment 3 of the present invention;

FIG. 10 is a cross-sectional view of FIG. 9;

fig. 11 is an exploded view of the push rod assembly according to embodiment 3 of the present invention;

fig. 12 is a partial sectional view of embodiment 3 of the present invention;

FIG. 13 is a schematic view of the case of powdering in example 3;

FIG. 14 is a schematic structural view of a putter in accordance with embodiment 4 of the present invention;

fig. 15a and 15b are schematic views illustrating the push rod of embodiment 4 being limited at different volume positions, respectively.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings, wherein for convenience of illustration, the drawings showing the structure of the device are not to scale and are partially enlarged, and the drawings are only examples, which should not limit the scope of the invention. It should be noted that the drawings are in simplified form and are not to precise scale, which is only used for the purpose of facilitating and clearly assisting in the description of the embodiments of the present invention.

Example 1

As shown in fig. 1 and 2, the process cartridge of the present embodiment includes a powder hopper 1, a push lever 2, and a push plate 3. The powder bin 1 is used for containing developer, the powder bin 1 of the embodiment is a cylindrical hollow cylinder, the front end of the powder bin 1 is open, a front end cover 1a for closing the open end is arranged, and the front end cover 1a is connected with the powder bin 1 in a sealing mode. Push rod 2 links to each other with push pedal 3, constitutes the powder feeding subassembly, and push rod 2 and the 3 formula structures as an organic whole of push pedal of this embodiment, in other embodiments, push rod 2 and push pedal 3 also can be split type structure, and both accessible threaded connection or modes such as buckle connection link together. The push rod 2 and the push plate 3 are disposed in the powder bin 1, one end of the push rod 2 opposite to the push plate 3 extends out of the powder bin 1, for convenience of description, the end of the push rod 2 exposed out of the powder bin 1 is defined as a front end, and the other end (end connected to the push plate 3) of the push rod 2 is a rear end. The push rod 2 can be arranged in the powder bin 1 along the axial direction of the push rod 2, the push rod 2 can drive the push plate 3 to move while moving, the push plate 3 is used for pushing the developer into the powder bin 1 and further sending the developer into the image forming equipment, and the shape of the push plate 3 can be adapted to the shape of the inner cavity of the powder bin 1. The peripheral wall of the push plate 3 is provided with a sealing ring for sealing with the inner wall of the powder bin 1 to prevent the developer from leaking outwards.

The utility model discloses a push rod 2 is hollow pipe (section of thick bamboo) body, and push rod 2's both ends are opened to preceding tip and the back tip at push rod 2 form developer import 2a and developer export 2b respectively. After the push rod 2 is arranged in the powder bin 1, the push rod is communicated with the inner cavity of the powder bin 1, so that the developer can be filled into the powder bin 1 through the push rod 2. In the embodiment, the sealing parts are respectively arranged at the developer inlet 2a and the developer outlet 2b, the sealing end cover 4 is adopted at the developer inlet 2a to seal the developer inlet 2a, and the sealing end cover 4 is installed at the developer inlet 2a in a threaded connection manner and is used for preventing the developer in the push rod 2 from leaking out of the push rod from the developer inlet 2 a; the developer outlet 2b is sealed by the sealing plug 5 at the developer outlet 2b, so that the developer in the powder bin 1 is prevented from leaking out of the powder bin from the developer outlet 2b, and the sealing plug 5 can be made of sponge, rubber, plastic and the like, and the size of the sealing plug is adapted to the inner diameter of the inner cavity of the push rod 2 or the inner diameter of the developer outlet 2b, or is matched with the inner cavity of the push rod 2 or the developer outlet 2b in an interference fit manner. Preferably, in order to facilitate the installation and positioning of the sealing plug 5, the inner diameter of the developer outlet 2b of the embodiment is smaller than the inner diameter of the push rod 2 (developer inlet), because the inner diameter of the developer outlet 2b is small, the outer edge of the developer outlet 2b protrudes inwards from the inner wall of the push rod 2 relative to the inner wall of the push rod 2, the protruding part can limit the sealing plug 5, when the sealing plug 5 moves to the rear end of the push rod 2 and contacts with the outer edge of the developer outlet 2b, the sealing plug is blocked by the outer edge of the developer outlet 2b, and cannot move backwards continuously, so that the sealing plug 5 can be prevented from falling into the powder bin 1 in the installation process.

As shown in fig. 3, the push rod 2 and the push plate 3 are disposed in the powder bin 1, the front end of the push rod 2 extends out of the powder bin 1, when the push rod 2 moves axially along itself under the action of an external force (such as pushing/pulling by a person), the push plate 3 can be pushed into the powder bin 1 or the push plate 3 can be pulled outward, and when the push plate 3 moves inward, the developer in the powder bin 1 can be pushed. Under the normal use state, sealing end cover 4 and sealing plug 5 block developer import 2a and developer export 2b respectively to guarantee that the developer can not leak outward.

When the developer needs to be filled, as shown in fig. 4, the push rod 2 is pulled out to drive the push plate 3 to move to the front end part of the powder bin 1, then the sealing end cover 4 is opened, and the sealing plug 5 in the push rod 2 is taken out, at this time, the push rod 2 is communicated with the inner cavity of the powder bin 1, the developer can be added from the developer inlet 2a of the push rod 2, and the developer flows into the powder bin 1 through the developer outlet 2b of the push rod 2, so that the process cartridge can be powdered. After the powder adding is finished, the sealing plug 5 is placed into the push rod 2 and pushed towards the rear end part of the push rod 2 to be located at the developer outlet 2b to seal the developer outlet 2b, then the sealing end cover 4 is installed back to the developer inlet 2a to seal the developer inlet 2a, after the sealing parts are installed, the processing box is installed into the image forming device, and when the push rod 2 is pushed inwards, the push plate 3 can be driven to push the developer into the powder bin 1 and into the image forming equipment. When the size of the push plate is about the same as that of the push rod, for example, the outer diameter of the push plate is equal to that of the push rod, or only slightly larger than that of the push rod, the push plate can also be considered as a part of the push rod, that is, the push plate is the rear end surface of the push rod.

In order to facilitate filling of the developer, as a preferred embodiment, a push rod limiting member 6 is disposed between the push rod 2 and the powder hopper 1 (the front end cover 1a), and the push rod limiting member 6 is used for limiting the axial movement of the push rod (when filling the developer). The push rod limiting part 6 of the embodiment includes a limiting groove 6-1 arranged on the outer wall of the push rod 2 and a limiting rod 6-2 arranged on the front end cover 1a, the limiting rod 6-2 is movably arranged on the front end cover 1a, and when the limiting rod 6-2 moves, one end of the limiting rod can extend into the limiting groove 6-1 or leave the limiting groove 6-1. As shown in figure 4, when powder is added, after the push rod 2 is pulled outwards to the bottom, the limiting groove 6-1 is exposed out of the powder bin 1 along with the movement of the push rod 2, the limiting rod 6-2 on the front end cover 1a is inserted into the limiting groove 6-1, and the limiting rod 6-2 and the limiting groove 6-1 are matched with each other, so that the push rod 2 can be limited, the push rod 2 cannot axially move, and the powder adding operation of an operator is facilitated.

Example 2

Referring to fig. 5, 6 and 7, the present embodiment differs from embodiment 1 in that: the push rod 2 of the embodiment is designed in a sectional manner, the push rod 2 comprises a first rod body 2-1 and a second rod body 2-2, the first rod body 2-1 and the second rod body 2-2 are connected together in a nested structure, and the second rod body 2-2 is connected with the push plate 3. The length of the second rod 2-2 is less than the length of the first rod 2-1, and in this embodiment, the joint between the first rod 2-1 and the second rod 2-2 is located at the rear of the push rod 2. Adopt split type body of rod structure, can make things convenient for packing into and taking out of sealing plug 5, before will installing or taking out sealing plug 5, will part first body of rod 2-1 and second body of rod 2-2 earlier, because the length of second body of rod 2-2 is shorter, operating personnel can easily stretch into near the developer export 2b in the second body of rod 2-2 with the finger, need not just can pack into sealing plug 5 or take out with the help of other instruments.

Example 3

As shown in fig. 8, 9, 10 and 11, the present embodiment is different from embodiment 1 in that: the developer outlet 2b of the push rod 2 of the present embodiment is sealed from the outside of the push rod 2 by a movable seal cap 5'. The movable sealing cover 5 'is arranged outside the push rod 2, is provided with a limiting guide column 5-1', is provided with a through hole 3a for the limiting guide column 5-1 'to pass through on the push plate 3, and can move along the axial direction of the push rod 2, so that the movable sealing cover 5' is separated from a developer outlet 2b of the push rod 2 or close to the developer outlet 2b of the push rod 2, and the developer outlet 2b is opened or closed. A push rod reset piece 7 is arranged between the movable sealing cover 5 'and the push plate 3 (push rod 2), and the push rod reset piece 7 provides a force for the push rod 2 (push plate 3) to move towards the movable sealing cover 5', so that the push rod 2 always has a tendency of moving towards the movable sealing cover 5 ', and the movable sealing cover 5' can be kept to block the developer outlet 2b under the condition of no other external force. The push rod reset piece 7 of the embodiment is a spring, the spring is sleeved on the limiting guide post 5-1 ', one end of the spring abuts against the end part of the limiting guide post 5-1' through a fastening piece such as a screw 8, and the other end of the spring abuts against the push plate 3.

As shown in fig. 12, the push rod 2 and the push plate 3 are located in the powder hopper 1, and when the push rod 2 is pulled out to the extreme position, because the limiting guide post 5-1 ' on the movable sealing cover 5 ' extends towards the powder bin end cover 1a after penetrating through the push plate 3, the limiting guide post 5-1 ' can contact with the powder bin end cover 1a before the push plate 3, because the powder bin end cover 1a is propped against the limiting guide post 5-1 and the movable sealing cover 5' can not move together with the push rod 2, when the push rod 2 is pulled outwards, as shown in fig. 13, the push rod 2 will overcome the elastic force of the spring (push rod stopper 7), compress the spring and leave the movable sealing cover 5' which can not move continuously, the developer outlet 2b is thus opened, and the developer flows out from the gap between the rear end surface of the push rod 2 and the front end surface of the movable seal cover 5' (the direction of the arrow in fig. 13). When the powder filling is completed, the push rod 2 can automatically move towards the direction close to the movable sealing cover 5 'under the action of the push rod reset piece 7, so that the movable sealing cover 5' can close the developer outlet 2b (fig. 12) of the push rod 2 to prevent the developer from entering the push rod 2 from the developer outlet 2b and leaking outwards. In order to increase the flow rate of the developer, it is preferable that the developer outlet 2b of the present embodiment has a trapezoidal vertical cross-sectional shape (taking the direction shown in fig. 12 as an example) with a smaller top and a larger bottom, that is, the inner diameter of the front end surface of the developer outlet 2b is smaller than that of the rear end surface, and the movable seal cover 5 'has a tapered seal portion 5 a' corresponding to the tapered outlet. In the embodiment, two limiting grooves 6-1 which are longitudinally arranged are arranged on the outer wall of the push rod 2, and when the limiting rods 6-2 are matched with different limiting grooves 6-1, the push rod 2 can be positioned at different positions.

This embodiment adopts the sealed lid of activity to seal the developer export on the push rod, and the last spacing guide post of the sealed lid of activity can guide the removal of the sealed lid of activity, makes it can guarantee to follow the axial displacement of push rod, also can carry on spacingly to the extreme position of the sealed lid of activity outward movement in-process simultaneously, makes the push rod can the sealed lid of relative activity more outwards remove a section distance to the sealed lid of activity and push rod phase separation open the developer export, alright through the push rod filling developer in to the powder storehouse. After the filling is completed, the limit of the limit rod on the push rod is removed, the push rod moves and resets under the action of the push rod reset piece or the action of external force, the push rod automatically forms sealing fit with the movable sealing cover, and the developer outlet is blocked to prevent the developer from leaking outside.

Example 4

As shown in fig. 14, this embodiment is different from embodiment 1 in that: two limit grooves are arranged on the push rod 2: a first capacity limiting groove 6-1a and a second capacity limiting groove 6-1 b. The capacity limiting grooves correspond to different capacity states in the powder bin 1, the second capacity limiting groove 6-1b is positioned in the middle of the push rod 2, and the first capacity limiting groove 6-1a is positioned at the rear part of the push rod 2 and is closer to the push plate 3. As shown in fig. 15a and 15b, when the restriction lever 6-2 is inserted into the first capacity restriction groove 6-1a, it means that the powder hopper has a larger capacity, and when the restriction lever 6-2 is inserted into the second capacity restriction groove 6-1b, it means that the powder hopper has a smaller capacity.

In the description of the embodiments, the emphasis is placed on the difference from other parts, and the same or similar parts between the parts may be referred to each other or may be combined with each other. The combination of parts and features is not intended to be exhaustive or to limit the invention to the precise forms disclosed, and the foregoing description of the disclosed embodiments is provided to enable one skilled in the art to make and use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A process cartridge detachably mountable to an image forming apparatus, said process cartridge including a powder hopper containing a developer, characterized in that: further comprising:

a hollow push rod provided with a developer inlet and a developer outlet; the developer outlet can be communicated with the inner cavity of the powder bin, and a sealing piece is arranged at the developer outlet; the push plate is connected with the push rod; the push rod and the push plate can be arranged in the powder bin in an axially moving mode along the powder bin, and one end, far away from the push plate, of the push rod can extend out of the powder bin.

2. A process cartridge according to claim 1, wherein: the sealing element is a sealing plug arranged in the push rod.

3. A process cartridge according to claim 2, wherein: the inner diameter of the developer outlet is smaller than the inner diameter of the push rod.

4. A process cartridge according to claim 2 or 3, wherein: the push rod comprises a first rod body and a second rod body, the length of the first rod body is larger than that of the second rod body, and the joint of the first rod body and the second rod body is located at the rear part of the push rod.

5. A process cartridge according to claim 4, wherein: the first rod body is connected with the second rod body in a nested mode.

6. A process cartridge according to claim 1, wherein: the sealing element positioned at the developer outlet is a movable sealing cover for sealing the developer outlet from the outer side of the push rod, the movable sealing cover is provided with a limiting guide post extending towards the push rod, and the axis of the limiting guide post is parallel to the axis of the push rod; a through hole for the limiting guide post to pass through is formed in the push plate, and a push rod resetting piece for enabling the push rod to approach the movable seal cover is arranged between the movable seal cover and the push rod or between the movable seal cover and the push plate; the push rod and the movable sealing cover can move relatively along the axial direction, so that the developer outlet is opened or closed.

7. A process cartridge according to claim 6, wherein: the push rod reset piece is a spring sleeved on the limiting guide post, one end of the spring abuts against the end part of the limiting guide post through a fastener, and the other end of the spring abuts against the push rod or the push plate.

8. A process cartridge according to claim 6 or 7, wherein: the movable sealing cover is provided with a conical sealing part corresponding to the shape of the developer outlet.

9. A process cartridge according to claim 1, 2, 6 or 7, wherein: and a push rod limiting part is arranged between the push rod and the powder bin and is used for limiting the axial movement of the push rod.

10. A process cartridge according to claim 9, wherein: the limiting part comprises at least one limiting groove arranged on the outer wall of the push rod and a limiting rod movably arranged on the front end cover of the powder bin, and one end of the limiting rod can extend into the limiting groove or leave the limiting groove.