Connecting structure of air cleaner intake pipe

Abstract

A connection structure for an air filter intake pipe includes an air inlet nozzle of the air filter and an air outlet nozzle of the intake pipe. Both the air inlet nozzle and the air outlet nozzle are rigid pipes. The air inlet of the air inlet nozzle and the air outlet of the air outlet nozzle overlap. The lower part of the air inlet nozzle at the air inlet extends towards the direction of the air outlet to form a first extension. The upper part of the air outlet nozzle at the air outlet extends towards the direction of the air inlet to form a second extension. The second extension is located directly above the first extension. The upper edges of the outer walls on both sides of the first extension and the lower edges of the outer walls on both sides of the second extension are engaged by a snap-fit ​​structure and positioned by a limiting structure. The air inlet and air outlet are arranged crosswise by the first extension and the second extension. The limiting structure composed of a limiting groove and a limiting block cooperates with the snap-fit ​​structure to fix and limit the air inlet nozzle and the air outlet nozzle from two directions, thereby improving the stability and strength of the connection structure between the air inlet nozzle and the air outlet nozzle.

Description

Technical Field

[0001] This utility model relates to air filters, specifically to a connection structure for an air filter intake pipe. Background Technology

[0002] The intake pipe of a car's air intake system is connected to the air filter. Due to the need for separation during later vehicle maintenance, the intake pipe and air filter need to be tightly connected to prevent detachment during use. Currently, the common connection method for car air filters and air filter intake pipes on the market is an insertion structure using adhesive foam gaskets and clamps. These connection structures are not secure enough during connection, are prone to detachment, have many parts, are relatively complex to install, and have poor effectiveness, failing to meet consumer needs. Furthermore, publications CN210460905U (a fixing and anti-detachment snap-fit ​​structure for air filters and air filter intake pipes) and CN216896334U (an easily detachable pipe connection structure for intake systems) both use a snap-fit ​​connection method to connect the air filter intake nozzle to the intake pipe. However, this single connection method is prone to significant shaking and failure under extreme conditions. Utility Model Content

[0003] To address the problems in the existing technology, this utility model provides a connection structure for an air filter intake pipe, aiming to improve the stability of the connection structure between the air filter intake nozzle and the intake pipe.

[0004] A connection structure for an air filter intake pipe includes an air filter intake port and an air intake pipe outlet port. Both the intake port and the outlet port are rigid pipes, and the air inlet of the intake port and the air outlet of the outlet port overlap.

[0005] The lower part of the air inlet nozzle at the air inlet extends towards the air outlet to form a first extension, and the upper part of the air outlet nozzle at the air outlet extends towards the air inlet to form a second extension. The second extension is located directly above the first extension. The upper edges of the outer walls on both sides of the first extension and the lower edges of the outer walls on both sides of the second extension are engaged by a snap-fit ​​structure.

[0006] A first skirt is integrally provided on the outer edge of the bottom surface of the first extension, which covers the bottom surface of the air outlet and covers the overlapping seam at the bottom of the air inlet and the air outlet; a second skirt is integrally provided on the outer edge of the top surface of the second extension, which covers the top surface of the air inlet and the overlapping seam at the top of the air inlet and the air outlet.

[0007] A limiting groove is provided in the middle of the first or second skirt, and a matching limiting block is inserted in the limiting groove. The limiting block is integrally set on the outer wall of the air outlet or air inlet.

[0008] Furthermore, the free end face of the limiting block is an arc-shaped guide surface.

[0009] Furthermore, the limiting block is a long strip structure set on the bottom surface of the air outlet or the top surface of the air inlet, and the long direction of the long strip structure is perpendicular to the airflow direction in the air filter intake pipe.

[0010] Furthermore, a first annular reinforcing plate is integrally provided on the outer wall of the first or second skirt at the position corresponding to the limiting groove.

[0011] Furthermore, a slot is provided in the middle of the first skirt, and a locking strip is integrally provided on the bottom surface of the air outlet corresponding to the slot. The locking strip is inserted into the slot and engages with its opening.

[0012] Furthermore, a second annular reinforcing plate is integrally provided on the outer wall of the first skirt at the position corresponding to the slot, and the lower end of the clip is folded over and covers the lower side of the second annular reinforcing plate.

[0013] Furthermore, strip-shaped reinforcing plates connecting the air intake nozzle and the first skirt are distributed on the bottom surface of both, and the free end of the limiting block abuts against the inner wall of the first annular reinforcing plate.

[0014] Furthermore, the snap-fit ​​structure includes a snap-fit ​​block and a snap-fit ​​fastened to the snap-fit ​​block, with the snap-fit ​​block and the snap-fit ​​fastener located on the first extension and the second extension, respectively.

[0015] Furthermore, both the air inlet and outlet nozzles have square cross-sections.

[0016] The beneficial effects of this utility model are as follows: the air inlet and air outlet are arranged in a cross manner through the first extension and the second extension, and the limiting structure composed of the limiting groove and the limiting block cooperates with the snap-fit ​​structure to fix and limit the air inlet and air outlet from two directions, thereby improving the stability and strength of the connection structure between the air inlet of the air filter and the air outlet of the air inlet pipe. Attached Figure Description

[0017] Figure 1 This is a structural diagram of the connection between the air inlet and air outlet.

[0018] Figure 2 This is a schematic diagram of the air intake nozzle.

[0019] Figure 3 This is a schematic diagram of the air outlet nozzle. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings. Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. The directional terms such as left, center, right, top, and bottom in the embodiments of the present invention are only relative concepts or referenced to the normal use state of the product, and should not be considered restrictive.

[0021] A connection structure for an air filter intake pipe, such as Figure 1 As shown, it includes the air inlet 1 of the air filter and the air outlet 2 of the air inlet pipe. Figure 1 Both the inlet nozzle 1 and the outlet nozzle 2 are cut sections from their respective connecting ends. Both are rigid tubular bodies with square longitudinal sections. The inlet 11 of the inlet nozzle 1 and the outlet 21 of the outlet nozzle 2 overlap (i.e., their end faces are in contact). Figure 2 As shown, the lower part of the air inlet nozzle 1 at the air inlet 11 extends towards the air outlet 21 to form a first extension 3, combined with Figure 3As shown, the upper part of the air outlet 2 at the air outlet 21 extends towards the air inlet 11 to form a second extension 4, which is located directly above the first extension 3. The upper edges of the outer walls on both sides of the first extension 3 and the lower edges of the outer walls on both sides of the second extension 4 are engaged by a snap-fit ​​structure 5. The snap-fit ​​structure 5 includes a snap block 52 and a snap fastener 51 engaged on the snap block 52. The snap block 52 and the snap fastener 51 are located on the first extension 3 and the second extension 4, respectively. A first skirt 31 is integrally provided on the outer edge of the bottom surface of the first extension 3. The first skirt 31 covers the bottom surface of the air outlet 2 and covers the overlapping seam at the bottom of the air inlet 11 and the air outlet 21. A second skirt 41 is integrally provided on the outer edge of the top surface of the second extension 4. The second skirt 41 covers the top surface of the air inlet 11 and covers the overlapping seam at the top of the air inlet 11 and the air outlet 21. The seams are sealed to cover the gaps. A limiting groove 33 is provided in the middle of the first skirt 31 or the second skirt 41. A matching limiting block 23 is inserted into the limiting groove 33. The limiting block 23 is a long strip structure provided on the bottom surface of the air outlet 2 or the top surface of the air inlet 1. The long direction of the long strip structure is perpendicular to the airflow direction in the air filter intake pipe. The limiting block 23 is integrally set on the outer wall of the air outlet 2 or the air inlet 1. The free end face of the limiting block 23 is an arc-shaped guide surface, which facilitates the insertion of the limiting block 23 into the limiting groove 33. Since the first skirt 31 and the second skirt 41 are relatively thin, in order to improve the structural strength at the limiting groove 33, a first annular reinforcing plate 35 is integrally set on the outer wall of the first skirt 31 or the second skirt 41 at the position corresponding to the limiting groove 33. The free end of the limiting block 23 abuts against the inner wall of the first annular reinforcing plate 35.

[0022] To ensure the engagement between the air inlet 1 and the air outlet 2, a slot 32 is provided in the middle of the first skirt 31. A retaining strip 22 is integrally provided on the bottom surface of the air outlet 2 at the position corresponding to the slot 32. The retaining strip 22 is inserted into the slot 32 and engages with its opening. To increase the structural strength of the first skirt 31 at the slot 32, a second annular reinforcing plate 34 is integrally provided on the outer wall of the first skirt 31 at the position corresponding to the slot 32. The lower end of the retaining strip 22 is folded over and covers the lower side of the second annular reinforcing plate 34. To increase the overall structural strength of the first skirt 31, strip-shaped reinforcing plates 12 connecting the two are distributed on the bottom surfaces of both the air inlet 1 and the first skirt 31.

[0023] During assembly, the air filter is in a fixed state, which also fixes the air inlet 1. The second extension 41 of the air outlet 2 is placed directly above the first extension 3, and the limiting block 23, the locking strip 22, and the locking block 52 are aligned vertically with the limiting groove 33, the locking slot 32, and the buckle 51, respectively. Then, the second extension 4 is pressed down, so that the limiting block 23 is inserted into the limiting groove 33, the locking strip 22 is inserted into the locking slot 32, and the buckle 51 is engaged with the locking block 52. The air inlet 11 and the air outlet 21 overlap, and the first skirt 31 and the second skirt 41 cover the bottom surface of the air outlet 2 and the top surface of the air inlet 1, respectively, to achieve a stable connection structure for the air filter intake pipe.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A connection structure for an air filter intake pipe, comprising an air inlet nozzle of the air filter and an air outlet nozzle of the intake pipe, wherein both the air inlet nozzle and the air outlet nozzle are rigid pipe bodies, and the air inlet of the air inlet nozzle and the air outlet of the air outlet nozzle overlap, characterized in that: The lower part of the air inlet nozzle at the air inlet extends towards the air outlet to form a first extension, and the upper part of the air outlet nozzle at the air outlet extends towards the air inlet to form a second extension. The second extension is located directly above the first extension. The upper edges of the outer walls on both sides of the first extension and the lower edges of the outer walls on both sides of the second extension are engaged by a snap-fit ​​structure. A first skirt is integrally provided on the outer edge of the bottom surface of the first extension, which covers the bottom surface of the air outlet and covers the overlapping seam at the bottom of the air inlet and the air outlet; a second skirt is integrally provided on the outer edge of the top surface of the second extension, which covers the top surface of the air inlet and the overlapping seam at the top of the air inlet and the air outlet. A limiting groove is provided in the middle of the first or second skirt, and a matching limiting block is inserted in the limiting groove. The limiting block is integrally set on the outer wall of the air outlet or air inlet.

2. The connection structure of an air cleaner intake pipe according to claim 1, characterized by: The free end face of the limiting block is a circular arc-shaped guide surface.

3. The connection structure of an air cleaner intake pipe according to claim 1 or 2, characterized by: The limiting block is a long strip-shaped structure set on the bottom surface of the air outlet or the top surface of the air inlet. The long direction of the long strip-shaped structure is perpendicular to the airflow direction in the air filter intake pipe.

4. The connection structure of the air filter inlet pipe according to claim 1, characterized in that: A first annular reinforcing plate is integrally provided on the outer wall of the first or second skirt at the position corresponding to the limiting groove.

5. The connection structure of the air filter inlet pipe according to claim 1, characterized in that: A slot is provided in the middle of the first skirt, and a retaining strip is integrally provided on the bottom surface of the air outlet corresponding to the slot. The retaining strip is inserted into the slot and engages with its opening.

6. The connection structure of the air filter inlet pipe according to claim 5, characterized in that: A second annular reinforcing plate is integrally provided on the outer wall of the first skirt at the position corresponding to the slot, and the lower end of the clip is folded over and covers the lower side of the second annular reinforcing plate.

7. The connection structure of the air filter inlet pipe according to claim 6, characterized in that: Strip-shaped reinforcing plates connecting the air intake nozzle and the first skirt are distributed on the bottom surface of both, and the free end of the limiting block abuts against the inner wall of the first annular reinforcing plate.

8. The connection structure of the air filter inlet pipe according to claim 1, characterized in that: The snap-fit ​​structure includes a snap block and a snap fastener that snaps onto the snap block, with the snap block and the snap fastener located on the first extension and the second extension, respectively.

9. The connection structure of the air filter inlet pipe according to claim 1, characterized in that: Both the air inlet and outlet nozzles have square cross-sections.

Images