Air filter with limiting convex block

Abstract

The utility model relates to the technical field of air filters, and particularly discloses an air filter with a limiting convex block. The air filter comprises a frame and filter paper arranged in the frame, the frame comprises a frame body and a frame arranged on the periphery of the top of the frame body, the air filter is installed in an assembly, the inner wall of the assembly is provided with a guide groove used for allowing the frame to be inserted, the frame extends downwards to be provided with a limiting protruding block, and the limiting protruding block is arranged in the guide groove. The end of the limiting protruding block is elastic, and the end of the limiting protruding block abuts against the inner side wall of the guide groove. According to the air filter with the limiting protruding blocks, the air filter can be well fixed, so that the air filter is prevented from shaking, stable installation of the air filter can be facilitated within a certain tolerance range, a certain buffering protection effect can be achieved through elastic contact, noise is reduced, and the installation process is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of air filters, and specifically discloses an air filter with a limiting convex block. Background Art

[0002] At present, an air filter structure design commonly used in the market for installation in automobile assemblies is shown in the figure. The air filter includes pleated Z-shaped filter paper and a frame injection-molded integrally with the filter paper. A sealing ring for sealing the assembly is arranged at the upper end of the frame. The sealing ring is made of elastic material. When the air filter is installed in the assembly, the sealing ring is connected to the inner wall of the assembly by an interference fit, so that the left and right sides of the air filter are tightly fitted to the inner wall of the assembly, which can prevent the air filter from shaking left and right in the assembly and play a buffering role.

[0003] However, there is a problem. The air filter is only provided with a sealing ring on the upper end, while the upper and lower ends of the air filter installed in the assembly need to be tightly abutted against the assembly. In the case of tolerance, the upper and lower ends of the air filter are sometimes difficult to completely seal and fit with the inner wall of the assembly, causing the air filter to swing up and down in the assembly during use, thereby generating noise and easily damaging the filter element and the assembly.

[0004] In response to the above problems, Patent 202322391032.6 discloses a silicone sealed injection molded air filter, and proposes that a plurality of fasteners spaced side by side are provided at the bottom of the left and right ends of the edge seal of the frame body, and the bottom of the fastener is fastened with an end edge limiting assembly that fits tightly on the side of the frame body, and the end edge limiting assembly includes an end edge strip, and the front end of the end edge strip is integrally provided with a positioning protrusion, and an arc-shaped groove is provided on the inner side of the positioning protrusion. The end edge strip is tightly against the side of the frame body and fastened by the fastener, and the positioning protrusion is fitted on the front side of the frame body through the arc-shaped groove, and a plurality of positioning blocks matching the fasteners are provided at the bottom of the end edge strip. By providing the end edge limiting assembly, the positioning protrusion and the end edge strip provided on the end edge limiting assembly can realize the rapid limiting installation of the front end and the left and right ends when installing the air filter.

[0005] However, the limiting component of the air filter is still not convenient to operate, and the structure is not simplified enough, and the material consumption is large, which is not conducive to cost reduction. Utility Model Content

[0006] The utility model aims to overcome the deficiencies of the prior art and provide an air filter with a limiting protrusion.

[0007] The utility model discloses an air filter with a limited position projection, which adopts the following technical scheme:

[0008] An air filter with a limiting protrusion comprises a frame and filter paper arranged in the frame, wherein the frame comprises a frame body and a frame arranged around the top of the frame body, the air filter is installed in an assembly, the inner wall of the assembly is provided with a guide groove for inserting the frame, the frame is provided with a limiting protrusion extending downward, the end of the limiting protrusion is elastic, and the end of the limiting protrusion and the inner side wall of the guide groove abut against each other.

[0009] Preferably, the limiting protrusion includes a first protrusion portion and a second protrusion portion, the first protrusion portion is connected to the frame, the second protrusion portion is connected to the first protrusion portion, the end of the second protrusion portion and the inner wall of the guide groove are mutually abutted, the hardness of the first protrusion portion is greater than that of the second protrusion portion, and the second protrusion portion is elastic.

[0010] Preferably, the first bump portion and the second bump portion are integrally molded by two-color injection molding.

[0011] Preferably, the first protrusion portion and the second protrusion portion are detachably mounted.

[0012] Preferably, the first protrusion portion and the frame are integrally injection-molded, and the second protrusion portion is an elastic sleeve, and the second protrusion portion is sleeved on the first protrusion portion.

[0013] Preferably, the second convex block portion is made of PU polyurethane material.

[0014] Preferably, two or more limiting protrusions are provided at intervals on one side of the frame.

[0015] Preferably, an opening is provided on one side of the assembly, the air filter is installed into the assembly from the opening, a guiding slope is provided at the end of the guide groove close to the opening, and the end of the limiting protrusion is inserted into the guide groove along the guiding slope.

[0016] Preferably, the frame is surrounded by a sealing ring.

[0017] Compared with the prior art, the utility model has at least the following beneficial effects:

[0018] The utility model provides an elastic limiting protrusion on the frame of the air filter. During the process of inserting the air filter into the assembly, the limiting protrusion will generate elastic deformation in the guide groove to reduce friction, which is easier to install. After the installation is completed, the limiting protrusion restores the elastic deformation, so that the limiting protrusion and the inner side wall of the guide groove in the assembly abut against each other, which can not only fix the air filter well to prevent the air filter from shaking, but also allow a certain tolerance range to facilitate the stable installation of the air filter. The elastic contact can also play a certain buffering and protective role, avoiding noise or wear caused by vibration transmission due to hard contact. Different from the prior art that requires operation of the limiting component to complete installation and fixation, the structure of this scheme is simpler, and the fixation can be completed after the air filter is installed in the assembly. There are no unnecessary operating steps, the installation process is more convenient and quick, and the material consumption is saved, reducing the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a frame of an air filter with a limiting protrusion according to Example 1;

[0020] Figure 2 The figure is a schematic diagram of the overall structure of the air filter with the limiting protrusion of the embodiment 1;

[0021] Figure 3 It is a schematic diagram of the process of installing the air filter with the limiting protrusion of Example 1 into the assembly;

[0022] Figure 4 It is a schematic diagram of the air filter with the limiting protrusion of Example 1 after being installed in the assembly;

[0023] Figure 5 It is a schematic diagram from another angle after the air filter with the limiting protrusion of Example 1 is installed in the assembly;

[0024] Figure 6 It is a partial cross-sectional view of the air filter with the limiting protrusion of Example 1 after being installed in the assembly;

[0025] Figure 7 for Figure 6 A magnified view of;

[0026] Figure 8 This is a schematic diagram of the structure of an air filter with a limiting protrusion according to Example 2.

[0027] Description of Figure Numbers:

[0028] 1. air filter; 11. frame; 111. frame; 112. sealing ring; 12. filter paper; 13. limiting protrusion; 131. first protrusion part; 132. second protrusion part; 2. assembly; 21. guide groove; 211. guide slope. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] Example 1

[0031] This embodiment discloses an air filter with a limited position projection, referring to Figure 1-7 , including a frame 11 and a filter paper 12 arranged in the frame 11, the frame 11 includes a frame body and a frame 111 arranged around the top of the frame body, the frame 111 is surrounded by a sealing ring 112, the air filter 1 is installed in the assembly 2, one side of the assembly 2 is provided with an opening, the inner walls on both sides of the assembly 2 are provided with guide grooves 21 for inserting the frame 111, the air filter 1 is loaded into the assembly 2 from the opening, the frame 111 extends downward to be provided with a limiting protrusion 13, the end of the limiting protrusion 13 is elastic, and the limiting protrusion 13 and the inner side wall of the guide groove 21 are mutually abutted. By setting the limiting protrusion 13, after the air filter 1 is installed in the assembly 2, the limiting protrusion 13 elastically abuts against the inner wall of the guide groove 21, which not only allows a certain tolerance range to facilitate the stable installation of the air filter 1, but also can well fix the upper and lower ends of the frame 111 with the sealing ring 112, and is not easy to loosen or shift, thereby preventing the air filter 1 from shaking, and the elastic contact can also play a certain buffering and protective role, avoiding the noise or wear caused by vibration transmission due to hard contact. Different from the prior art, the structure of this scheme is simpler, and the air filter 1 can be fixed after being installed in the assembly 2, without unnecessary operating steps, and the installation process is more convenient and quick, and it also saves material consumption and reduces manufacturing costs.

[0032] In this embodiment, see Figure 6-7 The limiting protrusion 13 includes a first protrusion portion 131 and a second protrusion portion 132. The first protrusion portion 131 is connected to the frame 111, and the second protrusion portion 132 is connected to the first protrusion portion 131. The end of the second protrusion portion 132 abuts against the inner wall of the guide groove 21. The hardness of the first protrusion portion 131 is greater than that of the second protrusion portion 132. The second protrusion portion 132 is elastic. For example, the first protrusion portion 131 is made of hard plastic, and the second protrusion portion 132 is made of a soft material such as PU polyurethane. By adopting the above design, the second protrusion portion 132 has the characteristics of softer hardness and more elasticity, and plays the role of elastic abutment and limiting. The first protrusion portion 131 has a greater hardness, which can ensure the overall structural stability of the limiting protrusion 13, thereby better improving the abutment reliability of the limiting protrusion 13.

[0033] In this embodiment, the first protrusion portion 131 and the second protrusion portion 132 can be integrally injection molded by a two-color injection molding process. By injecting two different materials into the same set of molds, a molding process is achieved in which the molded parts are formed of two materials. The two materials have different hardness and different colors, thereby improving the assembly performance and aesthetics of the air filter.

[0034] In this embodiment, two limiting protrusions 13 are spaced apart on one side of the frame 111. The two limiting protrusions 13 are spaced apart so that the supporting and fixing effect of the air filter is more stable. Of course, in other embodiments, more than two limiting protrusions 13 may be spaced apart on one side of the frame 111.

[0035] In this embodiment, a guide slope 211 is provided at the end of the guide groove 21 close to the assembly opening, and the limiting protrusion 13 is installed into the guide groove 21 along the guide slope 211. By adopting the above design, the installation process of the air filter 1 with the limiting protrusion 13 is smoother.

[0036] Example 2

[0037] This embodiment discloses an air filter with a limited position projection, referring to Figure 8 The only difference from Example 1 is that the first protrusion portion 131 and the second protrusion portion 132 are detachably installed, wherein the first protrusion portion 131 and the frame 111 are integrally injection-molded, and the second protrusion portion 132 is an elastic sleeve, specifically a rubber sleeve or a silicone sleeve, etc. The second protrusion portion 132 is sleeved on the first protrusion portion 131, which is convenient for the manufacturing process. In addition, when the elastic sleeve is worn due to long-term use or other situations, the second protrusion portion 132 can also be disassembled and replaced so that the air filter 1 can continue to be used for stable filtering.

[0038] The technical solution provided by the utility model is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation mode of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. At the same time, for general technicians in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. An air filter with a limited position projection, comprising a frame and filter paper arranged in the frame, wherein the frame comprises a frame body and a frame arranged around the top of the frame body, the air filter is installed in an assembly, and the inner wall of the assembly is provided with a guide groove for inserting the frame, characterized in that: The frame is provided with a limiting protrusion extending downward, the end of the limiting protrusion is elastic, and the end of the limiting protrusion and the inner side wall of the guide groove are mutually supported.

2. The air filter with a limiting protrusion according to claim 1, characterized in that: The limiting protrusion includes a first protrusion portion and a second protrusion portion, the first protrusion portion is connected to the frame, the second protrusion portion is connected to the first protrusion portion, the end of the second protrusion portion and the inner wall of the guide groove are mutually abutted, the hardness of the first protrusion portion is greater than that of the second protrusion portion, and the second protrusion portion is elastic.

3. The air filter with a limiting protrusion according to claim 2, characterized in that: The first bump portion and the second bump portion are integrally injection-molded by two-color injection molding.

4. The air filter with a limiting protrusion according to claim 2, characterized in that: The first protrusion portion and the second protrusion portion are detachably installed.

5. The air filter with a limiting protrusion according to claim 4, characterized in that: The first protrusion part and the frame are integrally injection-molded, and the second protrusion part is an elastic sleeve, and the second protrusion part is sleeved on the first protrusion part.

6. The air filter with a limiting protrusion according to claim 2, characterized in that: The second convex block portion is made of PU polyurethane material.

7. The air filter with a limiting protrusion according to claim 1, characterized in that: Two or more limiting protrusions are arranged at intervals on one side of the frame.

8. The air filter with a limiting protrusion according to claim 1, characterized in that: An opening is provided on one side of the assembly, and the air filter is installed into the assembly from the opening. A guiding slope is provided at the end of the guide groove close to the opening, and the end of the limiting protrusion is inserted into the guide groove along the guiding slope.

9. The air filter with a limiting protrusion according to any one of claims 1 to 8, characterized in that: The frame is surrounded by a sealing ring.

Images