Filter screen with thermoplastic elastomer rubber coating structure
By using injection molding technology with thermoplastic elastomer overlay structure, the problems of cumbersome processing of filter sealing materials and failure of foam-type seals have been solved, achieving high-efficiency sealing and wear resistance, and improving motor performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-03-20
AI Technical Summary
The existing filter screen has a complicated processing procedure and is difficult to automate when bonding sealing materials to both sides of the plastic part. Foam seals fail in complex structures, affecting the sealing effect and motor performance.
It adopts a thermoplastic elastomer overlay structure, and the overlay part is integrally molded with the filter screen shell through injection molding to achieve a seal, avoid secondary bonding, and adapt to complex structures.
It improves the sealing effect, simplifies the processing steps, enhances the wear resistance and environmental impact resistance of the seal, and ensures motor performance.
Smart Images
Figure CN224009306U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to air filter technical field, concretely to a filter screen with thermoplastic elastomer rubber coating structure. BACKGROUND
[0002] The filter screen is a filter material composed of a mesh or a fiber network; its application range is very wide, and is mainly used in air conditioners, purifiers, range hoods, air filters, dehumidifiers and dust collectors and the like.
[0003] The existing filter screen is pasted with sealing materials on the front and back surfaces of the plastic part, the front surface is sealed with the dust inlet of the filter dust chamber to prevent dust leakage, and the back surface is sealed with the air outlet of the dust chamber to prevent dust leakage to the motor. However, the current technology mainly uses the secondary pasting or assembling method to paste the sealing materials, and the processing procedures are more and it is difficult to realize automation. On the other hand, the foam sealing is limited by the product structure and cannot be realized on complex irregular structures. Moreover, the foam sealing is easily worn out and fails after long-term use and water washing under the influence of the environment such as temperature and humidity, which affects the sealing of the product and may affect the performance of the motor due to dust leakage. Therefore, the filter screen with thermoplastic elastomer rubber coating structure is proposed to solve the above problems. SUMMARY
[0004] (I) Technical problems solved
[0005] In view of the deficiencies of the prior art, the utility model provides a filter screen with thermoplastic elastomer rubber coating structure, which has the advantages of sealing by thermoplastic elastomer rubber coating and installing the rubber coating on the surface of the plastic part by hot plastic forming, avoiding the decline of the overall use effect of the device due to secondary pasting and solving the problems of the existing filter screen, i.e. pasting sealing materials on the front and back surfaces of the plastic part, sealing the front surface with the dust inlet of the filter dust chamber to prevent dust leakage, and sealing the back surface with the air outlet of the dust chamber to prevent dust leakage to the motor. However, the current technology mainly uses the secondary pasting or assembling method to paste the sealing materials, and the processing procedures are more and it is difficult to realize automation. On the other hand, the foam sealing is limited by the product structure and cannot be realized on complex irregular structures. Moreover, the foam sealing is easily worn out and fails after long-term use and water washing under the influence of the environment such as temperature and humidity, which affects the sealing of the product and may affect the performance of the motor due to dust leakage.
[0006] (II) Technical solutions
[0007] The technical solutions of the utility model to solve the above technical problems are as follows: a filter screen with thermoplastic elastomer rubber coating structure, comprising a filter screen housing body, a first rubber coating part and a second rubber coating part,
[0008] The first and second encapsulating members are made of thermoplastic elastomer material and are integrally formed with the filter screen shell body through an injection molding process, the first and second encapsulating members are respectively wrapped on the outer surfaces of opposite sides of the filter screen shell body, and at least one side encapsulating member extends to the assembly contact area outside the filter screen shell body.
[0009] The utility model discloses the beneficial effect is:
[0010] The filter screen with the thermoplastic elastomer encapsulating structure has the advantages that sealing is carried out through thermoplastic elastomer encapsulation, and the encapsulation is installed on the surface of the plastic part in a thermoplastic forming mode, thereby avoiding the decline of the overall use effect of the device due to secondary pasting.
[0011] On the basis of the above technical scheme, the utility model still can make following improvement.
[0012] Further, the outer side surface of the filter screen shell body is provided with a groove, the first encapsulating member is filled in the groove and extends to the outside of the groove, and the outer side surface of the filter screen shell body is also provided with a protrusion, and the second encapsulating member is attached to the outer side surface of the protrusion.
[0013] The beneficial effect of the above further scheme is that the groove can facilitate injection molding of the first encapsulating member, and the protrusion can facilitate injection molding of the second encapsulating member.
[0014] Further, the vertical height difference between the bottom surface of the groove and the outer side surface of the filter screen shell body is 0.2-0.4 mm, and the vertical height difference between the bottom surface of the protrusion and the outer side surface of the filter screen shell body is 0.4-0.6 mm.
[0015] Further, the outer side of the first encapsulating member and the outer side of the second encapsulating member are both provided with a rib, and the number of the ribs is several.
[0016] The beneficial effect of the above further scheme is that the rib can reduce frictional resistance.
[0017] Further, the thermoplastic elastomer material is selected from any one of thermoplastic polyurethane, thermoplastic vulcanized rubber and thermoplastic elastomer. DETAILED DESCRIPTION
[0018] Fig. 1 It is a structural schematic view of the utility model;
[0019] Fig. 2 It is a structural sectional view of the utility model;
[0020] Fig. 3 It is a structural plan view of the utility model.
[0021] In the figure: 1, filter screen shell body; 2, first encapsulation part; 3, second encapsulation part; 4, groove; 5, protrusion; 6, rib position. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0023] In the embodiments, the filter screen with the thermoplastic elastomer encapsulation structure is given. Figs. 1-3 The utility model discloses a filter screen with thermoplastic elastomer encapsulation structure, and the utility model discloses a filter screen shell body 1, first encapsulation part 2 and second encapsulation part 3, first encapsulation part 2 and second encapsulation part 3 are made of thermoplastic elastomer material, and are integrally formed with filter screen shell body 1 through injection molding process, and first encapsulation part 2 and second encapsulation part 3 are respectively covered on the outer surfaces of the opposite sides of filter screen shell body 1, and at least one side encapsulation part extends to the assembly contact area outside filter screen shell body 1.
[0024] Through the integrally formed operation of the injection molding process, first encapsulation part 2 and second encapsulation part 3 can be installed on the outside of filter screen shell body 1, which avoids the cumbersome operation of the secondary bonding of first encapsulation part 2 and second encapsulation part 3, and can improve the overall sealing effect.
[0025] The utility model discloses a filter screen with thermoplastic elastomer encapsulation structure, and the utility model discloses a filter screen shell body 1, first encapsulation part 2 and second encapsulation part 3, first encapsulation part 2 and second encapsulation part 3 are made of thermoplastic elastomer material, and are integrally formed with filter screen shell body 1 through injection molding process, and first encapsulation part 2 and second encapsulation part 3 are respectively covered on the outer surfaces of the opposite sides of filter screen shell body 1, and at least one side encapsulation part extends to the assembly contact area outside filter screen shell body 1.
[0026] The outer side surface of filter screen shell body 1 is provided with a groove 4, and first encapsulation part 2 is filled in the groove 4 and extends to the outside of the groove 4. The outer side surface of filter screen shell body 1 is also provided with a protrusion 5, and second encapsulation part 3 is attached to the outer side surface of the protrusion 5.
[0027] The groove 4 and the first encapsulation part 2 form mechanical interlocking, so that when the first encapsulation part 2 is injection molded, the outflow of the first encapsulation part 2 injection liquid can be effectively prevented, and the injection molding effect of the first encapsulation part 2 is improved.
[0028] The vertical height difference between the bottom surface of the groove 4 and the outer side surface of filter screen shell body 1 is 0.2-0.4mm, and the vertical height difference between the bottom surface of the protrusion 5 and the outer side surface of filter screen shell body 1 is 0.4-0.6mm.
[0029] The protrusion 5 and the second encapsulation part 3 form mechanical interlocking, which facilitates the encapsulation injection molding operation of the second encapsulation part 3.
[0030] The outer side of the first encapsulating part 2 and the second encapsulating part 3 is provided with a plurality of rib positions 6.
[0031] The rib positions 6 on the outer side of the first encapsulating part 2 and the second encapsulating part 3 form multiple sealing protection operations and reduce frictional resistance during installation.
[0032] The thermoplastic elastomer material is selected from any one of thermoplastic polyurethane TPU, thermoplastic vulcanized rubber TPV and thermoplastic elastomer TPE.
[0033] The thermoplastic elastomer material has good wear resistance and lubrication effect, and the material ensures good thermoplastic rheological property and high elasticity at normal temperature, aging resistance and heat deformation resistance.
[0034] Working principle:
[0035] The first encapsulating part 2 and the second encapsulating part 3 are integrally formed by injection molding and installed on the filter screen housing body 1, then the filter element is installed on the inner side of the filter screen housing body 1, and then the filter screen housing body 1 is installed on the outer side of the dust box of the sweeping machine, and the outer side of the first encapsulating part 2 is extruded with the outer side of the dust box of the sweeping machine, which can prevent dust leakage, thereby completing the installation operation of the filter screen housing body 1.
[0036] It should be noted that in this text, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or equipment including the element.
[0037] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A filter screen with a thermoplastic elastomer coating structure, comprising a filter screen outer shell body (1), a first coating component (2), and a second coating component (3), characterized in that: The first coated part (2) and the second coated part (3) are made of thermoplastic elastomer material and are integrally formed with the filter screen housing body (1) by injection molding process. The first coated part (2) and the second coated part (3) are respectively covered on the outer surfaces of opposite sides of the filter screen housing body (1), and at least one coated part extends to the assembly contact area on the outside of the filter screen housing body (1).
2. The filter screen with a thermoplastic elastomer coating structure according to claim 1, characterized in that: The outer surface of the filter housing body (1) is provided with a groove (4), the first rubber-coated part (2) is filled in the groove (4) and extends to the outside of the groove (4), the outer surface of the filter housing body (1) is also provided with a protrusion (5), and the second rubber-coated part (3) is attached to the outer surface of the protrusion (5).
3. A filter screen with a thermoplastic elastomer coating structure according to claim 2, characterized in that: The vertical height difference between the bottom surface of the groove (4) and the outer surface of the filter screen housing body (1) is 0.2-0.4mm, and the vertical height difference between the bottom surface of the protrusion (5) and the outer surface of the filter screen housing body (1) is 0.4-0.6mm.
4. A filter screen with a thermoplastic elastomer coating structure according to claim 1, characterized in that: The outer sides of both the first rubber-coated component (2) and the second rubber-coated component (3) are provided with ribs (6), and the number of ribs (6) is several.
5. A filter screen with a thermoplastic elastomer coating structure according to claim 1, characterized in that: The thermoplastic elastomer material is selected from any one of thermoplastic polyurethane (TPU), thermoplastic vulcanized rubber (TPV), and thermoplastic elastomer (TPE).