Supporting pad insert and air filter

Abstract

The utility model belongs to the technical field of air filters, and particularly relates to a supporting pad insert which comprises a supporting body and an embedding ring. A connecting hole is formed in the center of the embedded ring; the injection molding combination part is mainly connected to the outer shell in a fusion and meshing mode and is integrally combined with the shell. In the injection molding process of the support pad insert, the embedded ring is firstly injected, and then the support body is secondarily injected on the embedded ring, so that the dimensional accuracy of the support pad insert is ensured, the process defects such as holes in the combined part are avoided, the stability is improved, and the production cost is lower. The embedded ring can be made of hard plastic which is the same as that of the shell, so that the embedded ring and the shell have excellent combinability. Wherein the first combination part of the embedded ring is mainly combined with the shell in a meshing mode, and the second combination part of the embedded ring is mainly combined with the shell in a fusion mode, so that integral combination is achieved, and the structural stability and reliability of the combination part are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air filters, and particularly relates to a support pad insert and an air filter. Background Art

[0002] An air filter is an essential component in an engine system. Its main function is to filter the air entering the engine to ensure the cleanliness of the air, thereby improving the combustion efficiency of the engine and extending its service life. An air filter usually consists of a housing and an internal filter element. The external housing is equipped with an air inlet and an air outlet. After the air enters through the air inlet and is filtered by the filter element, it flows from the air outlet to the engine.

[0003] In order to fix the air filter and enable it to be stably installed in the engine compartment, special shock pads are usually provided on the outer shell. These shock pads need to be tightly assembled with the installation points in the engine compartment to ensure the stability and shock absorption effect of the filter during vehicle driving.

[0004] In the prior art, there is a scheme of directly assembling and connecting the shock pad with the outer shell. Although this method is simple, the bonding strength is low, and the stability of the connection part is poor. There is also a scheme of connecting the shock pad with the outer shell by using the secondary injection molding technology, that is, after the housing is formed, the shock pad material is injected into the designated position of the housing. Although this technology improves the bonding effect to a certain extent, there are still some problems. For example, during the secondary injection molding, due to the fact that the size of the outer shell is much larger than that of the shock pad, and the outer shell may be deformed to a certain extent due to external forces, thermal stresses and other factors during the processing, resulting in the position deviation of the shock pad or fine defects such as holes at the joint with the housing. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a support pad insert and an air filter. The purpose is to improve the connection stability by adding an embedding ring between the support body and the housing, and at the same time ensure the dimensional accuracy of the support pad insert, avoid process defects such as holes at the joint between the support body and the embedding ring, and due to the excellent bonding property between the embedding ring and the housing, greatly improve the structural stability and reliability of the joint part.

[0006] To achieve the above purpose, the utility model provides a support pad insert, which includes a preformed embedding ring and a support body injection-molded and combined on the embedding ring; the embedding ring has a connection hole in the center and an injection-molding joint part on the outer periphery; the support body and the embedding ring are integrally combined during injection molding; the embedding ring has a stable shape, and the support body has elasticity.

[0007] During the manufacturing process of the air filter housing, this support pad insert is placed as a pre-set insert at a predetermined position in the mold, and then the housing is injection-molded. Since the support pad insert only contains a relatively small-sized embedding ring and a support body, high-precision molds can be used for batch prefabrication. That is, first, high-precision hard embedding rings are mass-produced, and then elastic support bodies are injection-molded on the embedding rings in batches. This can ensure the dimensional accuracy of the support pad insert made of heterogeneous materials, avoid process defects such as holes at the joint of heterogeneous materials, ensure extremely high consistency and stability among products of different batches, and the production cost is also relatively low. During the injection molding process of combining the support pad insert with the air filter housing, since the embedding ring of the support pad insert can be made of the same hard plastic as the housing during prefabrication, it has excellent bonding property with the housing, thereby improving the structural stability and reliability of the joint part.

[0008] Furthermore, the embedding ring is integrally injection-molded from a hard material; the molding material of the support body is selected from rubber or silica gel.

[0009] For the support pad insert of the present utility model, the material of the support body can be selected from elastic rubber or silica gel materials, which have certain resilience, heat resistance, and wear resistance. The materials of the embedding ring and the external housing both use hard plastics, and the two are integrally formed, so that the situation of loosening or even detachment will not occur, which enhances the stability to a certain extent.

[0010] Furthermore, the embedding ring includes a connecting ring, a top ring and a bottom ring on both sides of the connecting ring, wherein the top ring, the connecting ring and the bottom ring are integrally formed; there is an injection molding joint on the outer edge of the connecting ring.

[0011] When the support pad insert is embedded in the housing, the joint part between the housing and the support pad insert has a blurred and transitional boundary. Since the upper and lower surfaces of the top ring and the bottom ring are regular shapes, while adding more aesthetic appearance, it also enhances the bonding ability between the support top and the housing.

[0012] Furthermore, the injection molding joint includes a first joint; the first joint is in the shape of a strip block and is oppositely combined on the outer circumference of the connecting ring.

[0013] Because the contact area of the first joint is relatively large and only a small amount of this strip block melts during the injection molding process, the first joint meshes with the external housing to a certain extent.

[0014] Furthermore, the injection molding joint also includes a plurality of second joints, which are in the shape of triangular blocks, and their roots are integrally combined with the outer circumference of the connecting ring; the second joints are arranged in a row on the outer circumference of the connecting ring not occupied by the first joint.

[0015] During the process of integrally injection - molding the support pad insert of the present utility model with the external housing, since the embedding ring and the external housing are made of the same material, they have the same melting point. The shape of the second joint part is triangular, and its small volume makes the main combination method be the fusion combination. By simultaneously arranging the first joint part and the second joint part outside the embedding ring, both the meshing and fusion combination methods exist, which is more conducive to the stable combination of the embedding ring and the housing.

[0016] Further, the radial diameter of the first joint part is w, and the radial diameter of the top ring is d; the radial diameter w is in the range of 0.4 - 0.6 mm; the radial diameter d is in the range of 1.1 - 1.3 mm, ensuring a strong bonding force. Preferably, d is 2 - 3 times of w.

[0017] Further, the support body includes a locking cylinder, a reinforcing block, a base, and a guiding part; one side of the base is combined with the locking cylinder, and the other side is combined with the guiding part; both the locking cylinder and the guiding part have through - holes in the center, and the base has through - holes communicating with them; a plurality of reinforcing blocks are arranged at the connection between the outer wall of the base and the locking cylinder.

[0018] The support pad insert of the present utility model, when in contact with the external engine, achieves support and shock absorption while preventing the engine vibration from being transmitted to the vehicle interior. And while improving the structural strength, it avoids the detachment of the housing and the connected column, improves the performance and service life of the support body, and extends the equipment life.

[0019] Further, the lower part of the guiding part is in a flared shape, and a plurality of shock - absorbing grooves are arranged on the arc surface inside the guiding part.

[0020] The guiding part of the support body reduces vibration by designing a plurality of shock - absorbing grooves, thus ensuring the smooth operation of the external housing, preventing it from being affected by excessive vibration and affecting stability, extending the equipment life and enhancing practicality.

[0021] The present utility model also provides an air filter, which includes a housing and a filter element; the filter element is installed in the internal chamber of the housing, dividing the chamber into an air inlet chamber and an air outlet chamber; the housing includes an air inlet channel and an air outlet channel, where the air inlet channel is connected to the air inlet chamber and the air outlet channel is connected to the air outlet chamber; the above - mentioned support pad insert is provided on the housing, the embedding ring and the housing are integrally combined, and the support body is injection - molded and combined with the embedding ring.

[0022] The air inlet channel and the air outlet channel of the air filter of the present utility model are respectively connected to chambers. The chambers before and after filtration are connected. Air enters the air inlet chamber from the air inlet channel, passes through the filtration and purification of the internal filter element, reaches the air outlet chamber, and enters the engine for combustion from the air outlet channel. During the injection - molding process, since the embedding ring can be made of the same hard plastic as the housing, it has excellent bonding property with the air filter housing, thus improving the structural stability and reliability of the bonding part.

[0023] Beneficial effects

[0024] For the support pad insert of the present utility model, a high-precision hard embedding ring is first produced, and then an elastic support body is injection-molded on the embedding ring for the second time. This can ensure the dimensional accuracy of the support pad insert, avoid process defects such as holes at the joint of heterogeneous materials, improve stability, and the production cost is also relatively low.

[0025] For the air filter of the present utility model, during the injection molding process of combining the support pad insert with the outer shell of the air filter, since the embedding ring of the support pad insert can be made of the same hard plastic as the outer shell during prefabrication, it has excellent bonding with the outer shell body, thereby improving the structural stability and reliability of the joint part. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of the support pad insert in Embodiment 1;

[0027] Figure 2 、 Figure 3 It is a schematic structural diagram of the embedding ring in Embodiment 1;

[0028] Figure 4 、 Figure 5 It is a structural diagram of the support body in Embodiment 1;

[0029] Figure 6 It is a top view of the support pad insert in Embodiment 1;

[0030] Figure 7 It is a schematic structural diagram of the air filter in Embodiment 2;

[0031] Figure 8 It is a partial schematic diagram of the support pad insert in Embodiment 2;

[0032] In the drawings: 1. Embedding ring; 2. Support body; 3. Shell; 11. Top ring; 12. Connecting ring; 121. Injection molding joint; 1211. First joint; 1212. Second joint; 13. Bottom ring; 14. Connecting hole; 21. Locking cylinder; 22. Reinforcing block; 23. Base; 24. Guide part; 241. Shock absorption groove; 31. Air inlet channel; 32. Air outlet channel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] Embodiment 1

[0034] As Figure 1 shown, a kind of support pad insert can be used as an insert for injection molding in a larger shell as a shock-absorbing connecting component.

[0035] As Figures 1 to 5As shown in the figure, the support pad insert of this embodiment includes a preformed embedding ring 1 and a support body 2 injection-molded and combined on the embedding ring 1; the center of the embedding ring 1 has a connection hole 14, and the outer periphery includes an injection-molding joint part 121; the support body 2 and the embedding ring 1 are integrally combined during injection molding. The embedding ring 1 has a stable shape and is integrally injection-molded from a rigid material; the molding material of the support body 2 is selected from elastic rubber or silica gel.

[0036] As Figure 3 shown in the figure, the embedding ring 1 includes a connection ring 12, and a top ring 11 and a bottom ring 13 on both sides of the connection ring 12, where the top ring 11, the connection ring 12, and the bottom ring 13 are integrally formed; the outer edge of the connection ring 12 has an injection-molding joint part 121. The injection-molding joint part 121 includes a first joint part 1211; the first joint part 1211 is in the shape of a strip block and is oppositely combined on the outer periphery of the connection ring 12.

[0037] The injection-molding joint part 121 further includes a plurality of second joint parts 1212, which are in the shape of triangular blocks, and their roots are integrally combined with the outer periphery of the connection ring 12; the second joint parts 1212 are arranged on the outer periphery of the connection ring 12 that is not occupied by the first joint part 1211. As Figure 6 shown in the figure, the radial diameter of the first joint part 1211 is w, and the radial diameter of the top ring 11 is d; d is 2 to 3 times of w. The radial diameter w is in the range of 0.4 to 0.6 mm; the radial diameter d is in the range of 1.1 to 1.3 mm.

[0038] As Figure 4 and Figure 5 shown in the figure, the support body 2 includes a locking cylinder 21, a reinforcing block 22, a base 23, and a guiding part 24; one side of the base 23 is combined with the locking cylinder 21, and the other side is combined with the guiding part 24; through holes are provided in the centers of both the locking cylinder 21 and the guiding part 24, and the base 23 has a through hole communicating with the two; a plurality of reinforcing blocks 22 are provided at the connection between the outer walls of the base 23 and the locking cylinder 21. Among them, 5 to 10 reinforcing blocks 22 can be provided.

[0039] The lower part of the guiding part 24 is in the shape of a flared opening, and a plurality of shock-absorbing grooves 241 are arranged on the arc surface inside the guiding part 24, thereby enhancing the shock-absorbing effect.

[0040] Embodiment 2

[0041] As Figure 7 shown, an air filter can be used to filter the air with impurities and convey the filtered clean air into the engine for combustion.

[0042] As Figure 7An air filter shown includes: a housing 3 and a filter element; the filter element is installed in the inner chamber of the housing 3, dividing the chamber into an air inlet chamber and an air outlet chamber; the housing 3 includes an air inlet passage 31 and an air outlet passage 32, wherein the air inlet passage 31 is connected to the air inlet chamber, and the air outlet passage 32 is connected to the air outlet chamber; a support pad insert of Embodiment 1 is provided on the housing 3, the embedding ring 1 and the housing 3 are integrally combined, and the support body 2 is injection-molded and combined with the embedding ring 1.

[0043] The air with impurities enters the air filter from the air inlet passage 31, reaches the air inlet chamber, and through the filtration and purification of the filter element, the filtered air enters the air outlet chamber and leads to the engine for combustion through the air outlet passage 32, reducing impurities while reducing the combustion energy consumption, and also improving the performance and service life of the equipment.

[0044] As Figure 8 shown, during the injection molding process, the embedding ring 1 is first injection-molded, and then the support body 2 is injection-molded and fused with the embedding ring 1 to form a support pad insert, and the support pad insert is placed as a whole in the housing 3 mold and injection-molded together with the housing 3. This can not only ensure the dimensional accuracy of the support pad insert, but also avoid process defects such as holes at the joint of the support pad insert. During the injection molding process of combining the support pad insert with the air filter housing 3, since the embedding ring 1 of the support pad insert can be made of the same hard plastic as the outer shell during prefabrication, it has excellent bonding property with the housing 3. The first joint portion 1211 of the embedding ring 1 is mainly in a meshing manner, and the second joint portion 1212 is mainly in a fusing manner due to its small volume and is combined with the housing 3 to achieve integral combination, thereby improving the structural stability and reliability of the joint portion. In Figure 8 it, the boundary of the connection part between the support pad insert and the air filter housing 3 is schematically shown by a solid line, but it should be understood that in the actual product, the connection between the support pad insert and the housing 3 is integrally combined, and there is no strict physical boundary line or only a blurred boundary line between the two.

Claims

1. A support pad insert, characterized in that: The invention comprises a preformed embedding ring (1) and a support body (2) which is injection-molded and bonded to the embedding ring (1); the embedding ring (1) has a connection hole (14) in the center and an injection-molded bonding portion (121) at the periphery; the support body (2) and the embedding ring (1) are integrally bonded during injection molding; the embedding ring (1) has a stable shape, and the support body (2) has elasticity.

2. The support pad insert according to claim 1, characterized in that: The embedding ring (1) is integrally formed by injection molding of a hard material; the molding material of the support body (2) is selected from rubber or silicone.

3. The support pad insert according to claim 1, characterized in that: The embedded ring (1) comprises a connecting ring (12) and a top circular ring (11) and a bottom circular ring (13) on both sides of the connecting ring (12), wherein the top circular ring (11), the connecting ring (12) and the bottom circular ring (13) are integrally formed; and an injection-molded joint (121) is provided on the outer edge of the connecting ring (12).

4. The support pad insert according to claim 3, characterized in that: The injection molding joint (121) comprises a first joint (1211); the first joint (1211) is in the shape of a strip block and is oppositely joined to the outer periphery of the connection ring.

5. The support pad insert according to claim 1, characterized in that: The injection molding joint (121) further comprises a plurality of second joints (1212) in the shape of triangular blocks, the roots of which are integrally connected to the outer circumference of the connecting ring (12); the second joints (1212) are arranged in an array on the outer circumference of the connecting ring (12) not occupied by the first joints (1211).

6. The support pad insert according to claim 4, characterized in that: The radial diameter of the first connecting portion (1211) is w, and the radial diameter of the top circular ring (11) is d; and d is 2 to 3 times of w.

7. The support pad insert according to claim 6, characterized in that: The radial diameter w is in the range of 0.4-0.6 mm; the radial diameter d is in the range of 1.1-1.3 mm.

8. The support pad insert according to claim 1, characterized in that: The support body (2) comprises a locking cylinder (21), a reinforcing block (22), a base (23), and a guide portion (24); the locking cylinder (21) is combined on one side of the base (23), and the guide portion (24) is combined on the other side; the locking cylinder (21) and the guide portion (24) are both provided with through holes in the center, and the base (23) has a through hole communicating with the two; and a plurality of reinforcing blocks (22) are provided at the connection between the base (23) and the outer wall of the locking cylinder (21).

9. The support pad insert according to claim 8, characterized in that: The lower portion of the guide portion (24) is in a bell-mouth shape, and a plurality of shock-absorbing grooves (241) are arranged on the arc surface inside the guide portion (24).

10. An air filter, characterized in that: The invention comprises a shell (3) and a filter element; the filter element is installed in the internal chamber of the shell (3), dividing the chamber into an air inlet chamber and an air outlet chamber; the shell (3) comprises an air inlet channel (31) and an air outlet channel (32), wherein the air inlet channel (31) is connected to the air inlet chamber, and the air outlet channel (32) is connected to the air outlet chamber; the shell (3) is provided with a support pad insert according to any one of claims 1 to 8, the embedding ring (1) and the shell (3) are integrally combined, and the support body (2) is injection-molded and combined with the embedding ring (1).

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