A kind of easy-to-maintain automobile air conditioner filter element of double-layer filter structure

The easy-maintain car air conditioning filter with a dual-layer filtration structure, where the inner and outer filter layers work together, and the design of the inner pull rope and outer locking block solves the problem of impurities falling off the filter after long-term use, achieving efficient filtration and simplified maintenance, and ensuring the air quality inside the vehicle.

CN224474816UActive Publication Date: 2026-07-10CHANGZHOU DINGWEI ENVIRONMENTAL PROTECTION TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGZHOU DINGWEI ENVIRONMENTAL PROTECTION TECH CO LTD
Filing Date
2025-06-13
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

After prolonged use, existing automotive air conditioning filters tend to accumulate impurities that can easily fall off, causing dust to re-spread inside the vehicle, making maintenance complex and inconvenient.

Method used

It adopts a dual-layer filtration structure, including an inner filter layer and an outer filter layer. The inner pull rope and the outer locking block work together to achieve a stable fixation of the filter element and easy removal, preventing impurities from spreading during replacement.

Benefits of technology

It improves air filtration efficiency, extends filter life, simplifies maintenance, reduces the risk of secondary pollution, and ensures air quality inside the vehicle.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224474816U_ABST
    Figure CN224474816U_ABST
Patent Text Reader

Abstract

The utility model provides a kind of easy maintenance automobile air conditioner filter core of double-layer filter structure, it is related to automobile air conditioner filter core technical field, to solve since automobile air filter is used after long time, its inside is easy to accumulate too much impurity, lead to in replacement process, accumulated impurity is easy to fall in vehicle body, make dust re-disperses in the problem inside vehicle body, including: holding frame;Four groups of edge fixed plates are equipped in the inside of holding frame;Opposite two groups of the edge fixed plate between glue link has outer filter layer;Two groups of the edge fixed plate without the through line through -hole are adhered with inner pull rope;The end position of the inner pull rope is fixedly connected with outer clamping block. The interval of opposite edge fixed plate can be reduced by pulling inner pull rope, outer filter layer is extruded, can effectively prevent the impurity accumulated inside in filter core removal replacement process fall in vehicle body inside, reduce the secondary pollution risk in car caused by impurity scattering, make filter core maintenance more clean, efficient.
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Description

Technical Field

[0001] This utility model belongs to the technical field of automotive air conditioning filter elements, and more specifically, it relates to an easy-to-maintain automotive air conditioning filter element with a double-layer filtration structure. Background Technology

[0002] As people's living standards improve, their requirements for the car driving environment are increasing. The air quality inside the car is directly related to the health and comfort of the passengers. However, many authoritative testing agencies have found that the air inside many vehicles contains a large number of toxic substances that are seriously harmful to human health. Among the many devices that improve the air quality inside the car, the car air conditioning filter plays a key role. It can filter the air entering the car from the outside, improve the air cleanliness, and block impurities such as fine particulate matter, pollen, bacteria, industrial exhaust gas and dust from entering the car, thus protecting the health of the people inside. Therefore, a car air conditioning filter is needed to facilitate the filtration of the air inside the car.

[0003] For example, application number 202323480125.2 relates to an automotive air conditioning filter element with good filtration effect, including a main body and a cover plate. The main body has a receiving cavity that penetrates the main body. One end of the receiving cavity is covered with a first filter screen. The inner wall of the receiving cavity has multiple slots that are close to both sides of the main body and penetrate the main body. The slots have buckles that are fixedly connected to the inner wall of the slots on both sides of the middle part of the buckles. One side of one end of the buckle has a protrusion. The receiving cavity is filled with an absorbent material with gaps. The cover plate has a rectangular frame structure and a second filter screen is covered inside the cover plate. The cover plate has grooves on both sides and is placed on the other end of the receiving cavity. The protrusion is fixedly engaged in the groove.

[0004] Based on existing technology, it has been found that most existing car air conditioning filters are disposable products. They are made of materials such as non-woven fabric and activated carbon, and filter the air through the properties of the materials. However, after a long period of use, the car air filter is prone to accumulating too many impurities inside. During the replacement process, the accumulated impurities can easily fall into the car body, causing dust to be redispersed inside the car body. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model relates to an easy-to-maintain automotive air conditioning filter with a double-layer filtration structure. This solves the problem that after prolonged use, excessive impurities tend to accumulate inside the automotive air filter, causing these accumulated impurities to fall into the vehicle body during replacement, leading to dust re-diffusion inside the vehicle.

[0006] This utility model provides an easy-to-maintain automotive air conditioning filter element with a double-layer filtration structure, achieved through the following specific technical means:

[0007] A maintenance-friendly automotive air conditioning filter with a dual-layer filtration structure includes: a retaining frame; four layers of adhesive inner frames arranged in an upper and lower array fixedly connected inside the retaining frame; a shaping frame respectively bonded to the upper and lower adhesive inner frames; an inner filter layer bonded between the middle two adhesive inner frames; four sets of side fixing plates provided inside the retaining frame; adhesive dots provided on the retaining frame; adhesive dots provided on the four sets of side fixing plates; through holes for wires opened on two sets of side fixing plates on the same side; an outer filter layer bonded between two sets of opposite side fixing plates; an inner pull rope bonded to the two sets of side fixing plates without the through holes; and an outer clamping block fixed to the end of the inner pull rope.

[0008] Preferably, the retaining frame is configured as a rectangular frame structure; the adhesive inner frame is configured as a rectangular frame structure; and the shaping frame is configured as a rectangular frame structure.

[0009] Preferably, the four sets of edge fixing plates are arranged in a rectangular array; the edge fixing plates are configured as square plate structures; and the through holes are configured as circular through holes.

[0010] Preferably, the outer wall of the retaining frame is provided with an outer cartoon hole; the outer cartoon hole and the through hole are kept on the same axis.

[0011] Preferably, there are two sets of outer filter layers; the two sets of outer filter layers are arranged on the upper and lower sides of the inner filter layer.

[0012] Preferably, the two sets of outer filter layers are provided with wiring through holes; the wiring through holes are respectively aligned with the outer filter holes and the wiring through holes on the same axis.

[0013] Preferably, the inner pull cord is threaded through the wiring through hole, the outer card hole, and the wiring through hole; the outer card block is locked inside the outer card hole.

[0014] The easy-to-maintain automotive air conditioning filter element with a double-layer filtration structure proposed in this utility model has the following beneficial effects:

[0015] 1. The inner and outer filter layers work together to form a multi-layer filtration system that can deeply purify the air inside the vehicle. Different filter layers can specifically filter particulate matter, harmful gases and odors of different sizes, greatly improving air filtration efficiency, effectively ensuring the air quality inside the vehicle, and creating a healthier and more comfortable breathing environment for drivers and passengers.

[0016] 2. The adhesive inner frame and the shaping frame work together to not only securely fix the filter layer, but also enhance the rigidity and stability of the overall frame structure. The shaping frame effectively prevents the frame from deforming in the complex environment inside the vehicle body, ensuring that the filter element is always in the best working condition, extending the service life of the filter element, and reducing the decline in filtration performance caused by structural problems.

[0017] 3. The inner pull rope and outer clamping block allow the filter element to be replaced by pulling the inner pull rope to reduce the distance between the relative side fixing plates and squeeze the outer filter layer. This effectively prevents impurities accumulated inside the filter element from falling into the vehicle body during the removal and replacement process, simplifying the maintenance operation process, reducing the maintenance difficulty, and also reducing the risk of secondary pollution inside the vehicle caused by impurities falling in, making filter element maintenance cleaner and more efficient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the three-dimensional assembly structure of this utility model.

[0019] Figure 2 This is an exploded structural diagram of the present invention.

[0020] Figure 3 This is an exploded bottom view structural diagram of this utility model.

[0021] Figure 4 This is a cross-sectional structural diagram of the utility model in use.

[0022] Figure 5 This utility model is composed of Figure 4 A schematic diagram of the enlarged structure of part A.

[0023] Figure 6 This is a schematic diagram of the dismantled cross-section structure of this utility model.

[0024] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0025] 1. Maintain the frame; 2. Attach the inner frame; 3. Shape the frame; 4. Inner filter layer; 5. Side fixing plate; 6. Adhesive dots; 7. Through holes for wiring; 8. Outer card holes; 9. Outer filter layer; 10. Through holes for wiring; 11. Inner pull rope; 12. Outer clamping block. Detailed Implementation

[0026] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0027] Example 1: As shown in the attached document Figure 1 To be continued Figure 6As shown: This utility model provides an easy-to-maintain automotive air conditioning filter element with a double-layer filtration structure, including: a retaining frame 1; four layers of adhesive inner frames 2 arranged in an upper and lower array are fixedly connected inside the retaining frame 1; the adhesive inner frames 2 are used to fix the shaping frame 3 and the inner filter layer 4 to assist in the assembly of the air conditioning filter element; the upper and lower adhesive inner frames 2 are respectively bonded with the shaping frame 3; the shaping frame 3 is used to shape the retaining frame 1 to prevent it from deforming inside the vehicle body and affecting the use of the air conditioning filter element; the inner filter layer 4 is bonded between the two middle adhesive inner frames 2; the inner filter layer 4 is used to cooperate with the outer filter layer 9 to filter the air inside the vehicle body; four sets of side fixing plates 5 are provided inside the retaining frame 1; adhesive dots 6 are provided on the retaining frame 1; adhesive dots 6 are provided on the four sets of side fixing plates 5. Adhesive points 6 are used to bond the side fixing plates 5 to the inner wall of the retaining frame 1, so as to maintain the stability of the connection between the two during use. Through holes 7 are opened on the two sets of side fixing plates 5 on the same side. An outer filter layer 9 is bonded between the two sets of opposite side fixing plates 5. An inner pull rope 11 is bonded to the two sets of side fixing plates 5 without through holes 7. The inner pull rope 11 is used to pull the side fixing plates 5 in conjunction with the outer clamping block 12, so as to reduce the distance between the opposite side fixing plates 5 and to squeeze the inner outer filter layer 9, so as to squeeze out the impurities accumulated inside, and prevent the internal impurities from falling into the vehicle body during the removal and replacement process. An outer clamping block 12 is fixed to the end of the inner pull rope 11. The outer clamping block 12 is used to pull the inner pull rope 11 to assist in pulling the side fixing plates 5.

[0028] Example 2: Based on Example 1, as shown in the appendix Figure 1 To be continued Figure 6As shown, the retaining frame 1 is a rectangular frame structure; the retaining frame 1 is used to assist in the installation and fixation of other structures of the air conditioning filter element, so as to facilitate the assembly of the air conditioning filter element; the adhesive inner frame 2 is a rectangular frame structure; the shaping frame 3 is a rectangular frame structure; the four sets of side fixing plates 5 are distributed in a rectangular array; the side fixing plates 5 are square plate structures; the side fixing plates 5 are used to shape the outer filter layer 9 to prevent it from deforming inside the vehicle body and to prevent it from affecting normal use; the through hole 7 is a circular through hole; the through hole 7 is used to cooperate with the outer card hole 8 and the wiring through hole 10 to lay the inner pull rope 11; the outer wall of the retaining frame 1 has an outer card hole 8; the outer card hole 8 and the wiring through hole 10 are connected to the outer card hole 8 and the wiring through hole 10. The wire through hole 7 is kept on the same axis; the outer locking hole 8 is used to cooperate with the wire through hole 7 and the wire routing through hole 10 to lay the inner pull rope 11; there are two sets of outer filter layers 9; the two sets of outer filter layers 9 are set on the upper and lower sides of the inner filter layer 4; the outer filter layer 9 is used to cooperate with the inner filter layer 4 to filter the interior of the car for convenient use; the two sets of outer filter layers 9 are provided with wire routing through holes 10; the wire routing through holes 10 are kept on the same axis as the outer locking hole 8 and the wire through hole 7 respectively; the wire routing through hole 10 is used to cooperate with the wire through hole 7 and the outer locking hole 8 to lay the inner pull rope 11; the inner pull rope 11 is threaded through the wire routing through hole 10, the outer locking hole 8 and the wire through hole 7; the outer locking block 12 is locked in the outer locking hole 8.

[0029] The specific usage and function of this embodiment are as follows:

[0030] In this utility model, the car air conditioning filter is installed inside the vehicle body so as to filter the air inside the vehicle body through the inner filter layer 4 and the outer filter layer 9.

[0031] During replacement, pull the outer clamp 12, which is fixed to the end of the inner pull rope 11. The inner pull rope 11 is threaded through the wiring through hole 10, the outer clamp hole 8, and the wiring through hole 7. Pull the outer clamp 12 to move the inner pull rope 11. The inner pull rope 11 pulls the side plate 5 without the wiring through hole 7, reducing the distance between the opposite side plates 5. This squeezes the inner outer filter layer 9, compacting the impurities accumulated inside the outer filter layer 9. Then, the entire air conditioning filter is removed to prevent internal impurities from falling into the vehicle body during the removal and replacement process. After removal, the replaced air conditioning filter is reinstalled.

[0032] The following points should be noted in this article:

[0033] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0034] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0035] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A maintenance-friendly automotive air conditioning filter element with a dual-layer filtration structure, characterized in that: include: The retaining frame (1) has four layers of adhesive inner frames (2) arranged in an upper and lower array. The upper and lower adhesive inner frames (2) are respectively bonded with shaping frames (3). The middle two layers of adhesive inner frames (2) are bonded with an inner filter layer (4). The retaining frame (1) has four sets of side fixing plates (5). The retaining frame (1) has adhesive dots (6). The four sets of side fixing plates (5) have adhesive dots (6). The two sets of side fixing plates (5) on the same side have through holes (7). The two sets of side fixing plates (5) opposite to each other are bonded with an outer filter layer (9). The two sets of side fixing plates (5) without through holes (7) are bonded with inner pull ropes (11). The ends of the inner pull ropes (11) are fixed with outer clips (12).

2. The easy-to-maintain automotive air conditioning filter element with a dual-layer filtration structure according to claim 1, characterized in that: The retaining frame (1) is configured as a rectangular frame structure; the adhesive inner frame (2) is configured as a rectangular frame structure; and the shaping frame (3) is configured as a rectangular frame structure.

3. The easy-to-maintain automotive air conditioning filter element with a dual-layer filtration structure according to claim 1, characterized in that: The four sets of edge fixing plates (5) are arranged in a rectangular array; the edge fixing plates (5) are configured as square plate structures; the through holes (7) are configured as circular through holes.

4. The easy-to-maintain automotive air conditioning filter element with a double-layer filtration structure according to claim 1, characterized in that: The outer wall of the retaining frame (1) is provided with an outer cartoon hole (8); the outer cartoon hole (8) and the through hole (7) are kept on the same axis.

5. The easy-to-maintain automotive air conditioning filter element with a double-layer filtration structure according to claim 1, characterized in that: The outer filter layer (9) is provided in two sets; the two sets of the outer filter layer (9) are arranged on the upper and lower sides of the inner filter layer (4).

6. The easy-to-maintain automotive air conditioning filter element with a dual-layer filtration structure according to claim 4, characterized in that: Two sets of outer filter layers (9) are provided with wiring through holes (10); the wiring through holes (10) are respectively kept on the same axis as the outer filter hole (8) and the wiring through hole (7).

7. The easy-to-maintain automotive air conditioning filter element with a dual-layer filtration structure according to claim 6, characterized in that: The inner pull rope (11) is threaded through the wiring through hole (10), the outer card hole (8) and the wiring through hole (7); the outer card block (12) is locked inside the outer card hole (8).