CN210052018U

CN210052018U - Novel carbon powder cylinder

Info

Publication number: CN210052018U
Application number: CN201920874148.6U
Authority: CN
Inventors: 石学良; 黄乐; 梁永
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: 2020-02-11
Anticipated expiration: 2029-06-11

Abstract

The novel carbon powder cylinder comprises a cylinder body and a piston assembly which is matched with the cylinder body and can be arranged in the cylinder body in an axially moving mode, wherein the piston assembly comprises a piston rod and a piston plate connected with the piston rod; the device is characterized in that the piston rod at least comprises a hollow first rod body which is provided with a developer inlet and a developer outlet; the developer outlet can be communicated with the inner cavity of the cylinder body, and a sealing piece is arranged in the first rod body. The utility model skillfully utilizes the hollow piston rod to form the powder feeding channel, which is convenient for the operation of operators; simultaneously, for directly seting up the powder mouth on the barrel lateral wall, the size increase of filling passageway to can improve filling efficiency, and can avoid the phenomenon that can appear developing powder seriously and leak at the removal in-process of piston.

Description

Novel carbon powder cylinder

Technical Field

The utility model relates to a carbon powder section of thick bamboo for being image forming apparatus powder-adding.

Background

An image forming apparatus such as a laser printer, a copier, or the like generally has an image processing unit and a developing unit, and develops an electrostatic latent image formed on the image processing unit with a developer such as toner supplied from the developing unit to form a visible image on a medium such as paper. Among them, toner (developer) as a consumable product needs to be constantly replenished to a developing unit in an image forming apparatus. In the prior art, developer carbon powder is directly filled in an opening on a powder box of a developing unit; image forming apparatuses have been developed that require the use of an externally mounted toner cartridge to add developer to a developing unit in the image forming apparatus. The existing carbon powder cylinder generally adds the developer into the cylinder body through a piston mounting opening on the cylinder body, but the whole piston needs to be detached in the developer adding mode, so that the operation is complex, and the operation is not facilitated for operators. If the powder adding opening is directly formed in the cylinder body, in order to guarantee the sealing performance of the carbon powder cylinder and not influence the original integral structure and appearance of the carbon powder cylinder, the size of the powder adding opening is generally smaller, so that the filling efficiency of the carbon powder cylinder during powder adding is lower, and the phenomenon that the developing powder seriously leaks can occur in the moving process of the piston.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a carbon dust section of thick bamboo convenient to irritate powder operation.

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

the novel carbon powder cylinder comprises a cylinder body and a piston assembly which is matched with the cylinder body and can be arranged in the cylinder body in an axially moving mode, wherein the piston assembly comprises a piston rod and a piston plate connected with the piston rod; the piston rod at least comprises a hollow first rod body provided with a developer inlet and a developer outlet; the developer outlet can be communicated with the inner cavity of the cylinder body, and a sealing piece is arranged in the first rod body.

According to the technical scheme, the utility model adopts the hollow piston rod with the developer inlet and the developer outlet arranged at two ends, and the developer outlet can be communicated with the inner cavity of the cylinder body to form a channel for adding powder into the cylinder body; namely, the developer can be poured in from the developer inlet of the piston rod and flows into the cylinder body of the carbon powder cylinder from the developer outlet of the piston rod; and then, the channel is sealed by using a sealing element arranged in the first rod body, and the carbon powder filling is completed. The utility model discloses ingenious hollow piston rod that has utilized forms the powder channel, the operating personnel operation of being convenient for. In addition, compared with the mode that the powder adding opening is directly formed in the side wall of the cylinder body, the size of the filling channel is increased, so that the filling efficiency is improved, and the phenomenon that the developing powder seriously leaks out in the moving process of the piston can be avoided.

Optionally, the seal is disposed at the developer outlet;

optionally, the sealing element is a sealing plug disposed in the piston 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 piston rod.

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

More specifically, the piston rod further comprises a second rod body connected to one end of the first rod body close to the developer inlet.

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

More specifically, one end of the second rod body nested in the first rod body is closed and abuts against the sealing element, or the closed end of the second rod body is used for replacing the sealing element.

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

Furthermore, the carbon powder tube also comprises a piston rod limiting assembly which can axially limit the piston rod and the tube body relatively.

The piston rod limiting assembly comprises at least one limiting groove arranged on the outer wall of the piston rod, a limiting hole arranged on the end cover of the barrel body and a limiting rod capable of penetrating through the limiting hole and extending into the limiting groove.

Furthermore, the piston rod is provided with a first capacity limiting groove and a second capacity limiting groove which respectively represent different capacity states of the cylinder body.

Through setting up the spacing subassembly of piston rod, realize the location to the piston rod, prevent under storage state, trigger the piston rod and cause the carbon dust to leak. In a more specific scheme, the limiting grooves are arranged at different positions on the piston rod, so that different capacity states of the cylinder body can be represented, and operators can know the capacity conditions in the cylinder body 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 piston rod flows outwards to cause pollution is avoided.

Further, the piston plate is an end surface of the piston rod.

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 piston 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 a piston rod according to embodiment 3 of the present invention;

fig. 9a and 9b are schematic views of the piston rod being limited at different volume positions according to embodiment 3.

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 toner cartridge of the present embodiment includes a cartridge body 1, a piston rod 2, and a piston plate 3. The barrel 1 has an inner cavity for accommodating the developer, the barrel 1 of the embodiment is a cylindrical hollow barrel, the front end of the barrel 1 is open, and a front end cover 1a for closing the open end is provided, and the front end cover 1a is connected with the barrel 1 in a sealing manner. Piston rod 2 links to each other with piston plate 3, constitutes and adds the powder subassembly, and the piston rod 2 and the 3 formula structures as an organic whole of piston plate of this embodiment, in other embodiments, piston rod 2 and piston plate 3 also can be split type structure, and modes such as both accessible threaded connection or buckle connection link together. Piston rod 2 and piston plate 3 set up in barrel 1, and the one end that piston plate 3 was kept away from to piston rod 2 stretches out outside barrel 1, for the convenience of expression, the utility model discloses with exposing of piston rod 2 tip definition outside barrel 1 for preceding tip, then another tip (the tip that links to each other with piston plate 3) of piston rod 2 is the rear end portion. The piston rod 2 can be arranged in the cylinder body 1 along the axial movement of the piston rod 2, the piston rod 2 can drive the piston plate 3 to move while moving, the piston plate 3 is used for pushing the developer to the outlet end of the cylinder body 1 and further sending the developer into the image forming equipment, and the shape of the piston plate 3 is matched with the shape of the inner cavity of the cylinder body 1. The peripheral wall of the piston plate 3 is provided with a sealing ring for forming sealing with the inner wall of the cylinder 1 to prevent the developer from leaking.

The utility model discloses a piston rod 2 is the hollow pipe (section of thick bamboo) body, and the both ends of piston rod 2 are opened to preceding tip and the back tip at piston rod 2 form developer import 2a and developer export 2b respectively. After the piston rod 2 is installed in the cylinder 1, the piston rod is communicated with the inner cavity of the cylinder 1 through the developer outlet 2b, so that the developer can be filled into the cylinder 1 through the piston rod 2. In the embodiment, the developer inlet 2a and the developer outlet 2b are respectively provided with a sealing member, the developer inlet 2a is sealed by a sealing end cover 4 at 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 piston rod 2 from leaking out of the piston 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 cylinder 1 is prevented from leaking out of the cylinder from the developer outlet 2b, and the sealing plug 5 can be made of sponge, rubber, plastic and the like, and is adaptive to the inner cavity of the piston rod 2 or the inner diameter of the developer outlet 2b or is matched with the inner cavity of the piston 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 present embodiment is smaller than the inner diameter of the piston rod 2 (developer inlet), because the inner diameter of the developer outlet 2b is small, the outer edge of the developer outlet 2b protrudes inward from the inner wall of the piston rod 2 relative to the inner wall of the piston rod 2, and the protruding portion can limit the sealing plug 5, when the sealing plug 5 moves to the rear end of the piston 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 backward, so that the sealing plug 5 can be prevented from falling into the cylinder 1 in the installation process.

As shown in fig. 3, the piston rod 2 and the piston plate 3 are disposed in the cylinder 1, the front end of the piston rod 2 extends out of the cylinder 1, the piston rod 2 can move along its own axis by an external force (such as pushing/pulling by a person), the piston plate 3 is pushed into the cylinder 1 or the piston plate 3 is pulled outward, and the developer in the cylinder 1 can be pushed to move to the outlet of the cylinder when the piston plate 3 is pushed inward. 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 piston rod 2 is pulled out to drive the piston plate 3 to move to the front end part of the cylinder body 1, then the sealing end cover 4 is opened, and the sealing plug 5 in the piston rod 2 is taken out, at this time, the inner cavity of the piston rod 2 is communicated with the inner cavity of the cylinder body 1, the developer can be added from the developer inlet 2a of the piston rod 2, and the developer flows into the cylinder body 1 through the developer outlet 2b of the piston rod 2, so that the toner can be added to the toner cylinder. After the powder adding is finished, the sealing plug 5 is placed into the piston rod 2 and pushed towards the rear end of the piston rod 2 to be located at the developer outlet 2b so as 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, and after the sealing parts are installed, the filling of the carbon powder cylinder is finished. When the carbon powder cylinder is needed to be used for filling carbon powder into the image forming equipment, the piston rod 2 is pushed inwards, and the piston plate 3 can be driven to push the developer into the cylinder body 1 and the image forming equipment. When the size of the piston plate is about the same as the size of the piston rod, for example, the outer diameter of the piston plate is equal to the outer diameter of the piston rod, or only slightly larger than the outer diameter of the piston rod, the piston plate may also be considered as a part of the piston rod, that is, the piston plate is the rear end surface of the piston rod.

As a preferred embodiment, a piston rod position limiting assembly 6 is disposed between the piston rod 2 and the cylinder 1 (the front end cover 1a), and the piston rod position limiting assembly 6 is used for limiting the axial movement of the piston rod 2 and positioning the piston rod 2. The piston rod limiting assembly 6 of the embodiment comprises a limiting groove 6-1 arranged on the outer wall of the piston rod 2, a limiting hole arranged on a front end cover 1a of the cylinder body 1 and a limiting rod 6-2; in a use state, after the limiting rod 6-2 passes through the limiting hole arranged on the front end cover 1a, one end of the limiting rod can extend into the limiting groove 6-1 or leave the limiting groove 6-1. As shown in fig. 4, after the piston rod 2 is pulled outwards to the bottom, the limiting groove 6-1 is exposed out of the cylinder 1 along with the movement of the piston rod 2, the limiting rod 6-2 passing through the limiting hole arranged on the front end cover 1a is inserted into the limiting groove 6-1, and the limiting rod 6-2, the limiting hole and the limiting groove 6-1 are mutually matched to form the limiting of the piston rod 2, so that the piston rod 2 cannot move axially. Of course, the limiting rod 6-2 can be connected and relatively movably arranged on the front end cover 1 a.

Example 2

Referring to fig. 5, 6 and 7, the present embodiment differs from embodiment 1 in that: the piston rod 2 of this embodiment is a split design, and the piston rod 2 includes a second rod body 2-1 and a first rod body 2-2, and the second rod body 2-1 and the first rod body 2-2 are connected together by a nested structure, and the first rod body 2-2 is connected to the piston plate 3. The length of the first rod body 2-2 is smaller than that of the second rod body 2-1, in this embodiment, the joint of the second rod body 2-1 and the first rod body 2-2 is located at one end of the piston rod 2 close to the piston plate; one end of the second rod body nested in the first rod body is closed (is a closed end) and abuts against the sealing element; of course, in this state, the seal may be absent, i.e. replaced by the closed end of the second rod; a developer inlet 2a and a developer outlet 2b are formed on the first rod 2-2. It is of course also possible that the first rod 2-2 and the second rod 2-1 are in communication. The split type rod body structure is adopted, so that the filling of the developer can be more convenient, and the filling and the taking out of the sealing plug 5 can be facilitated; before filling the developer or installing or taking out the sealing plug 5, the first rod body 2-1 and the second rod body 2-2 are separated, and because the length of the second rod body 2-2 is shorter, an operator can easily stretch fingers into the vicinity of the developer outlet 2b in the second rod body 2-2, and can plug or take out the sealing plug 5 without other tools; filling of the developer and sealing of the developer outlet 2b are also facilitated. In addition, the second rod body can be sleeved outside the first rod body.

Example 3

As shown in fig. 8, this embodiment is different from embodiment 1 in that: two limit grooves are arranged on the piston 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 cylinder body 1, the second capacity limiting groove 6-1b is located in the middle of the piston rod 2, and the first capacity limiting groove 6-1a is located in the rear portion of the piston rod 2 and is closer to the piston plate 3. As shown in FIGS. 9a and 9b, when the stopper rod 6-2 is inserted into the first capacity-limiting groove 6-1a, it means that the toner cartridge has a large capacity, and when the stopper rod 6-2 is inserted into the second capacity-limiting groove 6-1b, it means that the toner cartridge has a small 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. The novel carbon powder cylinder comprises a cylinder body and a piston assembly which is matched with the cylinder body and can be arranged in the cylinder body in an axially moving mode, wherein the piston assembly comprises a piston rod and a piston plate connected with the piston rod; the device is characterized in that the piston rod at least comprises a hollow first rod body which is provided with a developer inlet and a developer outlet; the developer outlet can be communicated with the inner cavity of the cylinder body, and a sealing piece is arranged in the first rod body.

2. A novel toner cartridge as claimed in claim 1, wherein: the seal is disposed at the developer outlet.

3. A novel toner cartridge as claimed in claim 1 or 2, wherein: the sealing element is a sealing plug.

4. A novel toner cartridge as claimed in claim 1 or 2, wherein: the inner diameter of the developer outlet is smaller than the inner diameter of the piston rod.

5. A novel toner cartridge as claimed in claim 1 or 2, wherein: the piston rod further comprises a second rod body connected to one end, close to the developer inlet, of the first rod body.

6. The novel toner cartridge of claim 5, wherein: the first rod body is connected with the second rod body in a nested mode.

7. A novel toner cartridge as claimed in claim 6, wherein: one end of the second rod body nested in the first rod body is closed and abuts against the sealing element.

8. A novel toner cartridge as claimed in claim 6, wherein: one end of the second rod body nested in the first rod body is a closed end, and the closed end replaces the sealing member.

9. A novel toner cartridge as claimed in claim 1 or 2, wherein: the carbon powder barrel further comprises a piston rod limiting assembly capable of axially limiting the piston rod and the barrel relatively.

10. A novel toner cartridge as claimed in claim 9, wherein: the piston rod limiting assembly comprises at least one limiting groove arranged on the outer wall of the piston rod, a limiting hole arranged on the barrel body and a limiting rod capable of penetrating through the limiting hole and extending into the limiting groove.

11. A novel toner cartridge as claimed in claim 10, wherein: the piston rod is provided with a first capacity limiting groove and a second capacity limiting groove which respectively represent different capacity states of the cylinder body.

12. A novel toner cartridge as claimed in claim 1 or 2, wherein: a sealing member is provided at the developer inlet.

13. A novel toner cartridge as claimed in claim 1 or 2, wherein: the piston plate is the end face of the piston rod.