CN219440941U

CN219440941U - Central tube structure with error-proof installation

Info

Publication number: CN219440941U
Application number: CN202320157371.5U
Authority: CN
Inventors: 王唯真
Original assignee: Mann and Hummel Filter Shanghai Co Ltd
Current assignee: Mann and Hummel Filter Shanghai Co Ltd
Priority date: 2023-02-08
Filing date: 2023-02-08
Publication date: 2023-08-01
Anticipated expiration: 2033-02-08

Abstract

The utility model relates to a central tube structure with error-proof installation, which comprises a groove (11) arranged at the bottom of a central tube (1) of a filter element and reinforcing ribs (12) arranged in the groove (11), wherein the groove (11) corresponds to a boss (21) of a shell end cover (2), a boss (21) is provided with a protrusion (22), and the protrusion (22) avoids the reinforcing ribs (12) to be inserted into the groove (11). Compared with the prior art, the utility model can achieve the purpose of error-proof installation.

Description

Central tube structure with error-proof installation

Technical Field

The utility model relates to the technical field of filters, in particular to a central tube structure with error-proof installation.

Background

The filter generally comprises a housing and a filter cartridge located in the housing, the filter cartridge being provided with a central tube inside. Because different brands of product designs are different, the structure of filter core center tube and casing is different for at the in-process that the filter core was installed in the casing, the in-process of installing the casing in the filter core takes place to mix the dress, like mix the second brand filter core into the casing of main brand, consequently, the mistake proofing installation demand to the filter core also is more and more, needs through some special structures and location, thereby reaches the purpose that avoids mixing the dress.

Disclosure of Invention

The utility model aims to provide a central tube structure with error-proof installation, which achieves the purpose of error-proof installation.

The aim of the utility model can be achieved by the following technical scheme: the utility model provides a take center tube structure of mistake proofing installation, includes the recess of setting in filter core center tube bottom and sets up the strengthening rib in the recess, recess and the boss of casing end cover correspond, be provided with the arch on the boss, the arch avoids the strengthening rib to insert in the recess.

Preferably, the center of the groove is provided with a reinforcing rib, the two sides of the boss are provided with bulges, and the reinforcing rib is positioned between the two bulges.

Further preferably, four inclined reinforcing ribs are arranged in the center of the groove, and the protrusions are correspondingly arranged in an inclined manner.

Still more preferably, the four reinforcing ribs are arranged in parallel and are arranged in a parallelogram.

Preferably, a reinforcing rib is arranged on one side of the groove, and a protrusion is arranged on the other side of the boss opposite to the reinforcing rib.

Further preferably, three inclined reinforcing ribs are arranged on one side of the groove, and the protrusions are correspondingly arranged in an inclined manner.

Still further preferably, the three reinforcing ribs are arranged in a K shape, wherein two ends of one reinforcing rib are connected with the grooves, and one end of the other two reinforcing ribs is connected with the reinforcing rib, and the other end is connected with the grooves.

Preferably, the shape of the edge of the groove is waist-shaped.

Preferably, the cross-sectional area of the groove decreases progressively from the bottom to the top of the cartridge center tube.

Preferably, the contact surface of the protrusion and the reinforcing rib is a plane.

Compared with the prior art, the utility model has the following advantages:

1. the boss at the corresponding position of the central tube bottom groove and the shell end cover can be matched in structure, the raised reinforcing rib is designed in the central tube bottom groove, the strength of the groove can be increased, and the purpose of error-proof installation is achieved by changing different positions of the reinforcing rib;

2. according to the utility model, through the design of the shape and the position of the groove at the bottom of the central tube, the rotary offset can not occur after the central tube is matched with the shell end cover, and the axial and radial positioning can be achieved;

3. the utility model achieves correct installation and matching through the concave-convex structures at the bottom of the central tube and the end cover of the shell, and meanwhile, the concave-convex structures at different positions can also avoid the false installation and matching of the filter element and the shell, thereby achieving the purpose of preventing mistakes;

4. the reinforcing rib at the bottom of the central tube can increase the strength of the central tube and prevent plastic parts from deforming.

Drawings

FIG. 1 is a schematic diagram of a central tube of a filter element according to embodiment 2;

FIG. 2 is a schematic diagram of a central tube of the filter element of the second embodiment 2;

FIG. 3 is a schematic diagram showing the structure of a housing end cap according to embodiment 2;

fig. 4 is a schematic diagram of a second embodiment of the end cap of the housing of embodiment 2;

FIG. 5 is a schematic view of the assembly of the center tube and housing end cap of the cartridge of example 2;

FIG. 6 is a schematic diagram of a central tube of the filter element of example 3;

FIG. 7 is a schematic diagram II of the central tube of the filter element of the embodiment 3;

FIG. 8 is a schematic diagram showing the structure of a housing end cap according to embodiment 3;

FIG. 9 is a second schematic structural view of the end cap of the housing of embodiment 3;

FIG. 10 is a schematic view of the assembly of the center tube and housing end cap of the cartridge of example 3;

in the figure: 1-a filter element central tube, 11-grooves, 12-reinforcing ribs, 2-a shell end cover, 21-a boss and 22-protrusions.

Detailed Description

The utility model will now be described in detail with reference to the drawings and specific examples. The following examples are given by way of illustration of detailed embodiments and specific procedures based on the technical scheme of the present utility model, but the scope of the present utility model is not limited to the following examples.

Example 1

The utility model provides a take center tube structure of mistake proofing installation, includes the recess 11 that sets up in filter core center tube 1 bottom, is provided with strengthening rib 12 in recess 11. The groove 11 corresponds to a boss 21 of the shell end cover 2, a boss 21 is provided with a boss 22, and when the filter element is assembled, the boss 22 of the shell end cover 2 is inserted into the groove 11 at the bottom of the filter element central tube 1 while avoiding the reinforcing rib 12.

Example 2

The utility model provides a take center tube structure of mistake proofing installation, this structure is done with the casing structure through the structure of filter core center tube 1 and is matees, mainly comprises two parts: a filter element central tube 1 and a shell end cover 2.

As shown in fig. 1 to 5, four inclined reinforcing ribs 12 positioned in the center of the groove 11 are added in the groove 11 at the bottom of the central tube 1 of the filter element and are used for matching inclined protrusions 22 on two sides of a boss 21 at the corresponding position of the end cover 2 of the shell. When the central tube is installed, the reinforcing ribs in the central tube groove 11 can be wrapped by the shell protrusions 22, so that the correct installation is achieved.

Example 3

As shown in fig. 6 to 10, three inclined reinforcing ribs 12 are added to one side of the groove 11 at the bottom of the central tube 1 of the filter element, and the projections 22 corresponding to the opposite positions of the other side of the boss 21 of the end cover 2 of the shell are arranged, so that the shell and the filter element can be correctly matched and installed according to the designated positions.

The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present utility model. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present utility model is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present utility model.

Claims

1. The central tube structure with the error-proof installation is characterized by comprising a groove (11) arranged at the bottom of a central tube (1) of a filter element and reinforcing ribs (12) arranged in the groove (11), wherein the groove (11) corresponds to a boss (21) of an end cover (2) of a shell, a bulge (22) is arranged on the boss (21), and the bulge (22) avoids the reinforcing ribs (12) to be inserted into the groove (11);

the center of the groove (11) is provided with a reinforcing rib (12), two sides of the boss (21) are provided with protrusions (22), and the reinforcing rib (12) is positioned between the two protrusions (22);

or, a reinforcing rib (12) is arranged on one side of the groove (11), and a bulge (22) is arranged on the other side of the boss (21) opposite to the reinforcing rib (12).

2. The central tube structure with error-proof installation according to claim 1, wherein four inclined reinforcing ribs (12) are arranged in the center of the groove (11), and the protrusions (22) are correspondingly arranged in an inclined manner.

3. The central tube structure with error-proof installation according to claim 2, wherein the four reinforcing ribs (12) are arranged in parallel and arranged in a parallelogram.

4. The central tube structure with error-proof installation according to claim 1, wherein three inclined reinforcing ribs (12) are arranged on one side of the groove (11), and the protrusions (22) are correspondingly arranged in an inclined manner.

5. The central tube structure with error-proof installation according to claim 4, wherein the three reinforcing ribs (12) are arranged in a K shape, wherein two ends of one reinforcing rib (12) are connected with the grooves (11), one end of the other two reinforcing ribs (12) is connected with the reinforcing rib (12), and the other end is connected with the grooves (11).

6. The central tube structure with error-proof installation according to claim 1, wherein the shape of the edges of the grooves (11) is kidney-shaped.

7. A central tube structure with error proofing according to claim 1, characterized in that the cross-sectional area of the groove (11) decreases gradually from the bottom to the top of the central tube (1) of the filter cartridge.

8. The center tube structure with error proofing according to claim 1, wherein the contact surface of the protrusion (22) and the reinforcing rib (12) is a plane.