Filter structure of ink-jet printer

Abstract

The utility model discloses a filter structure of an ink-jet printer, which belongs to the technical field of filter systems of ink-jet printers and is used for solving the problem of unreliable connection between a nozzle filter and an ink tube. The filter is provided with the joint connected with the filter main body; a frustum part abutting against the ink tube is formed in the circumferential direction of the outer wall of a connecting column at the tail end of the connector, and the ink tube connector is characterized by further comprising a crimping part which can be arranged outside the connecting column in a sleeving mode. The connecting sleeve is arranged outside the crimping part and connected with the connecting column so as to provide pressing force for the crimping part, the matching part on the crimping part tightly presses the ink tube on the frustum part, and the ink-jet printer has the advantages of being simple in structure, convenient to manufacture, low in cost and beneficial to prolonging the stable operation time of the ink-jet printer.

Description

TECHNICAL FIELD

[0001] The utility model relates to a filter system technical field of ink-jet printer, especially relate to a kind of ink-jet printer filter structure. BACKGROUND

[0002] Ink-jet printer mainly includes main filter, pump front filter, nozzle filter and recycling filter, these filters play important role in purifying ink in ink-jet printer, preventing blockage, regularly replacing these filters is the key measure to ensure the stable operation of ink-jet printer;

[0003] Among them, nozzle filter is the most precise filter inside ink-jet printer, filter level is 5um, its main role is to prevent slightly larger particles into nozzle, protect nozzle from damage, traditional nozzle filter is butterfly filter, the connecting column at both ends of filter is connected with ink pipe through connector, connector and ink pipe are plug-connected, connection is unreliable, there is falling phenomenon, in addition, sealing is not strict, ink is easily leaked. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the defects of prior art, provide a kind of ink-jet printer filter structure, to solve the problem of unreliable connection between nozzle filter and ink pipe.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] The utility model discloses a kind of ink-jet printer filter structure, comprising:

[0007] Connector connected with filter main body;

[0008] The connecting column outer wall of the connector end is formed with ink pipe abutting taper section, characterized by further comprising

[0009] Compression joint, which can be set on the outside of the connecting column;

[0010] Connecting sleeve, which is installed outside the compression joint and connected with the connecting column, to provide compression force for the compression joint, the matching part on the compression joint compresses the ink pipe on the taper section.

[0011] Further, the matching part is the matching surface same as the taper inclination of the taper section.

[0012] Further, the compression joint is configured as a circular gasket, and the inner diameter of the circular gasket is formed with the matching surface.

[0013] Further, the compression joint is configured as a sleeve with a circular structure, the outer wall of the sleeve is formed with a shoulder, the outer diameter of the shoulder is greater than the inner diameter of the tail end of the connecting sleeve, and the bottom end of the sleeve is formed with the matching surface.

[0014] Further, the connecting sleeve is formed with an internal thread section at one end and a limiting portion at the other end for abutting against the crimping piece.

[0015] Further, the connecting column is formed with a variable diameter section below the frustoconical portion, the variable diameter section having an external thread and being larger in diameter than the maximum diameter of the frustoconical portion.

[0016] Further, the frustoconical portion is connected to the connecting column at one end and extends away from the center line of the connecting column at the other end, and the bottom end face of the frustoconical portion is spaced apart from the top end face of the variable diameter section.

[0017] In the above technical solution, the ink-jet printer filter structure has the following beneficial effects:

[0018] The ink-jet printer filter structure is provided with a crimping piece and a connecting sleeve, the crimping piece is sleeved on the outside of the connecting column and abuts on the frustoconical portion, the connecting sleeve is arranged on the outside of the crimping piece and connected to the connecting column to provide axial compression force for the crimping piece, the crimping piece is compressed on the frustoconical portion by the cooperation portion to keep tight connection, thereby ensuring connection reliability and sealing performance and reducing the risk of ink leakage and pipe disconnection. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments or prior art, the drawings needed in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0020] Figure 1 is a front view of the ink-jet printer filter structure disclosed by the present application;

[0021] Figure 2 is Figure 1 A position enlarged view;

[0022] Figure 3 is Figure 1 A position another embodiment enlarged view;

[0023] Figure 4 is a front view of the ink-jet printer filter structure joint disclosed by the present application;

[0024] Figure 5 is a front view of the ink-jet printer filter structure connecting sleeve disclosed by the present application.

[0025] EXPLANATION OF REFERENCE NUMERALS:

[0026] 1, filter body; 2, joint; 3, connecting column; 4, cone section; 5, reducing section; 6, pressure contact piece; 7, matching surface; 8, shoulder; 9, connecting sleeve; 10, limiting part. DETAILED DESCRIPTION

[0027] In order for those skilled in the art to better understand the technical scheme of the utility model, the utility model will be further described in detail below with reference to the drawings.

[0028] Referring to Figure 1 , 2 as shown;

[0029] The utility model discloses a filter structure of ink-jet printer, comprising: filter body 1, joint 2;

[0030] The connecting column 3 of the joint 2 end is formed with the cone section 4 abutting with the ink pipe in the circumferential direction of the outer wall, and the connecting column 3 is inserted into the ink pipe and abuts with the inner wall of the ink pipe through the cone section 4, wherein the filter structure further comprises a pressure contact piece 6 and a connecting sleeve 9.

[0031] The pressure contact piece 6 can be set on the outside of the connecting column 3 and abut on the cone section 4, and the connecting sleeve 9 is arranged on the outside of the pressure contact piece 6, when assembling, the connecting sleeve 9 is connected with the connecting column 3 to provide axial compression force for the pressure contact piece 6, and the pressure contact piece 6 is pressed on the cone section 4 through the matching part to keep close connection, so that the ink pipe is prevented from being separated from the connecting column 3 when the axial force pulls, thereby guaranteeing the connection reliability and the sealing property, and reducing the risk of ink leakage and pipe separation.

[0032] Referring to Figure 2 as shown:

[0033] Preferably, the matching part is a matching surface 7 with the same taper of the cone section 4, of course, according to the requirement, it can also be other shapes, which can realize abutting with the outer wall of the cone section 4, such as annular convex ridge.

[0034] The pressure contact piece 6 is structured as a sleeve pipe with circular structure, the outer wall of the sleeve pipe is formed with a shoulder 8, the outer diameter of the shoulder 8 is larger than the inner diameter of the tail end of the connecting sleeve 9, the inner wall of the bottom end of the sleeve pipe is formed with the matching surface 7, when assembling, the outer wall of the ink pipe is sequentially sleeved into the connecting sleeve 9 and the pressure contact piece 6 and then sleeved on the connecting column 3 of the joint, after the connecting sleeve 9 is connected with the connecting column 3, the ink pipe is pressed on the cone section 4 by driving the pressure contact piece 6 through the connecting sleeve 9.

[0035] Referring to Figure 3 as shown:

[0036] In another preferred embodiment, the pressure contact piece 6 is structured as a circular gasket, and the inner diameter of the circular gasket is formed with the matching surface 7, which is simple in structure, convenient to manufacture and low in cost.

[0037] Referring to Figure 5 as shown:

[0038] Preferably, the connecting sleeve 9 is formed with an internally threaded section at one end and a limiting portion 10 at the other end for abutting against the crimping member 6, the connecting column 3 is formed with a variable diameter section 5 below the frustoconical portion 4, the variable diameter section 5 has an external thread, and the connecting sleeve 9 is threadedly connected to the variable diameter section 5 through the internally threaded section.

[0039] The frustoconical portion 4 is connected to the connecting column 3 at one end of the outer wall and extends away from the center line of the connecting column 3 at the other end, that is, the end with the larger diameter of the frustoconical portion 4 is located on the side of the variable diameter section 5, and the bottom end face of the frustoconical portion 4 is spaced apart from the top end face of the variable diameter section 5 to accommodate the end of the ink pipe and ensure that the ink pipe has sufficient overlap with the connecting column 3.

[0040] In the above technical solution, the utility model provides a filter structure of a code inkjet printer, and the use method is:

[0041] When assembled, the outer wall of the ink pipe is sequentially sleeved into the connecting sleeve 9 and the crimping member 6 and then inserted into the connecting column 3, the end of the ink pipe abuts against the variable diameter section 5 of the connecting column 3, the connecting sleeve 9 is rotated to be threadedly connected to the connecting column 3, the crimping member 6 is driven by the connecting sleeve 9 to press the ink pipe against the frustoconical portion 4,

[0042] The filter structure effectively avoids the ink pipe from being separated from the connecting column 3 when subjected to axial force pulling, thereby ensuring the connection reliability and sealing performance and reducing the risk of ink leakage and pipe separation.

[0043] The above only describes some exemplary embodiments of the utility model by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the utility model. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection of the utility model claims.

Claims

1. The structure of the inkjet printer filter includes: The connector (2) is connected to the filter body (1); The connecting post (3) at the end of the connector (2) has a circumferentially formed conical portion (4) that abuts against the ink tube, characterized in that: it further includes A crimping member (6) is fitted onto the outside of the connecting post (3); A connecting sleeve (9) is installed outside the crimping member (6) and connected to the connecting post (3) to provide a clamping force to the crimping member (6), and the mating part on the crimping member (6) presses the ink tube onto the frustum part (4).

2. The inkjet printer filter structure according to claim 1, characterized in that... ； The mating part is a mating surface (7) with the same taper slope as the frustum part (4).

3. The inkjet printer filter structure according to claim 2, characterized in that; The crimping member (6) is constructed as a circular gasket, and the inner diameter of the circular gasket forms the mating surface (7).

4. The inkjet printer filter structure according to claim 2, characterized in that; The crimping member (6) is a circular sleeve with a shoulder (8) formed on the outer wall of the sleeve. The outer diameter of the shoulder (8) is larger than the inner diameter of the tail end of the connecting sleeve (9). The bottom end of the sleeve has the mating surface (7).

5. The inkjet printer filter structure according to any one of claims 1-4, characterized in that; The connecting sleeve (9) has an internal thread section at one end and a limiting part (10) at the other end for abutting against the crimping member (6).

6. The inkjet printer filter structure according to claim 5, characterized in that; The connecting post (3) is located below the frustum portion (4) and has a variable diameter section (5) with a diameter greater than the maximum diameter of the frustum portion (4). The variable diameter section (5) has external threads.

7. The inkjet printer filter structure according to claim 6, characterized in that... ； One end of the outer wall of the frustum (4) is connected to the connecting column (3), and the other end extends away from the center line of the connecting column (3), and the bottom end face of the frustum (4) and the top end face of the variable diameter section (5) are spaced apart.

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