Blow-molded air intake pipe with snap-fit ​​structure and air filter with snap-fit ​​structure

Abstract

This utility model relates to a blow-molded air intake pipe with a snap-fit ​​structure and an air filter with a snap-fit ​​structure. The blow-molded air intake pipe is snapped into the lower housing of the air filter. The surface of the blow-molded air intake pipe has a barbed snap-fit ​​structure at the snap-fit ​​point. The main body wall of the lower housing of the air filter has a hollowed-out snap-fit ​​structure. The blow-molded air intake pipe and the lower housing of the air filter are snapped together through the interaction of the barbs and the hollowed-out structure. The surface of the blow-molded air intake pipe has a boss-shaped guide positioning structure at the snap-fit ​​point. The main body wall of the lower housing of the air filter has a notch-shaped guide positioning structure. The blow-molded air intake pipe and the lower housing of the air filter are guided and positioned by the interaction of the boss and the notch. Compared with the prior art, this utility model allows the blow-molded air intake pipe to be firmly snapped onto the lower housing of the air filter, ensuring alignment during assembly and contributing to assembly stability.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle engineering technology, and relates to a blow-molded air intake pipe with a snap-fit ​​structure and an air filter with a snap-fit ​​structure. Background Technology

[0002] like Figures 1 to 5 As shown, the blow-molded air intake pipe 20 is typically connected to the lower housing of the air filter using a snap-fit ​​structure. One side of the blow-molded air intake pipe 20 features barbs 201, while one side of the lower housing 10 of the air filter features a perforation 101. However, due to the characteristics of the blow-molded pipe's manufacturing process, the inner wall thickness cannot be precisely controlled, and the pipe opening is prone to collapse. When the blow-molded air intake pipe 20 is connected to the lower housing 10 of the air filter, it often becomes loose, leading to easy detachment, abnormal noise, or wear. Furthermore, the relatively long insertion length of the blow-molded air intake pipe 20 during insertion and removal results in a longer core-pulling stroke in the mold. A shorter perforation 101 length results in a smaller pull-out force. If a particularly high pull-out force is required, the lengths of the barbs 201 and the perforation 101 need to be very long. However, the length of the perforation 101 cannot be too long, as an excessively long blow-molded pipe will easily tear and fail. Utility Model Content

[0003] The purpose of this invention is to overcome at least one defect of the prior art by providing a blow-molded air intake pipe with a snap-fit ​​structure and an air filter with a snap-fit ​​structure. This invention enables the blow-molded air intake pipe to be firmly snapped onto the lower housing of the air filter, ensuring alignment during assembly and facilitating stable assembly.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] One of the technical solutions of this utility model is to provide a blow-molded air intake pipe with a snap-fit ​​structure. This blow-molded air intake pipe is snap-fitted to the lower housing of an air filter. The surface of the blow-molded air intake pipe has a barbed snap-fit ​​structure at the snap-fit ​​point, and the main body wall of the lower housing of the air filter has a hollowed-out snap-fit ​​structure. The blow-molded air intake pipe and the lower housing of the air filter are snap-fitted together through the interaction of the barbs and the hollowed-out structure.

[0006] The blow-molded air intake pipe has a guide positioning structure with a boss at the snap-fit ​​point on its surface. The main body wall of the lower housing of the air filter has a guide positioning structure with a notch. The blow-molded air intake pipe and the lower housing of the air filter are snapped together by the boss and the notch, and the positioning prevents the blow-molded air intake pipe from rotating during the snap-fit ​​process.

[0007] Furthermore, the surface of the blow-molded air inlet pipe is provided with long barbs on the upper and lower surfaces of the air inlet at the snap-fit ​​joint.

[0008] Furthermore, the long barbs on the lower surface engage with the hollowed-out parts after the blow-molded air intake pipe extends into the lower housing of the air filter.

[0009] Furthermore, the long barbs on the upper surface engage with the main body wall of the lower air filter housing after the blow-molded air intake pipe extends into it.

[0010] The length of the barbs can be adjusted according to the required insertion and extraction force. Since the hollowing utilizes the main wall of the lower housing of the air filter, the blow-molded air inlet pipe will not be prone to breakage due to weak product strength caused by excessive hollowing length.

[0011] Furthermore, the blow-molded air intake pipe has tapered protrusions on the left and right surfaces of the air intake at the snap-fit ​​joint. The size of the tapered protrusions near the lower housing of the air filter is smaller than that far from the lower housing of the air filter. The protrusions can achieve automatic centering, and the assembly position is precise and stable. After snap-fitting, the blow-molded air intake pipe is not easy to loosen. The small head and large tail can help the protrusions to snap into the notch more easily, and strengthen the guiding role of the protrusions.

[0012] Furthermore, a support column is provided between the upper and lower surfaces of the air inlet at the snap-fit ​​point inside the blow-molded air inlet pipe as a blow-molding support structure. The air inlet is made using a blow molding process, and the material is generally soft. Therefore, especially for air inlets with a large span between the left and right surfaces at the snap-fit ​​point, they are prone to collapsing inward. Adding a support column can prevent the air inlet from collapsing and make the snap-fit ​​more secure.

[0013] One of the technical solutions of this utility model is to provide an air filter with a snap-fit ​​structure, which is snap-fit ​​connected to the blow-molded air inlet pipe. The main body wall of the lower housing of the air filter has a hollow snap-fit ​​structure, and the main body wall of the lower housing of the air filter has a notch for guiding and positioning.

[0014] Furthermore, the main body wall of the lower housing of the air filter has a long strip of perforation on the lower surface of the air inlet corresponding to the blow molding air inlet pipe snap-fit. The long strip of perforation is adapted to long barbs, and the perforation prevents the barbs from falling off. Since the main body wall of the lower housing of the air filter is used as the limit on the barb side, the insertion length of the mold core pulling is reduced, and the mold manufacturing is easier, while saving the production time of the product.

[0015] Furthermore, the main body wall of the lower housing of the air filter has a conical notch on the left and right surfaces corresponding to the air inlet at the blow-molded air inlet pipe connection. The size of the conical notch near the blow-molded air inlet pipe is larger than that away from the blow-molded air inlet pipe, and the conical notch is adapted to the conical boss.

[0016] Furthermore, the main wall of the lower housing of the air filter has an arc-shaped bent plate extending outward from the same side as the long strip hollow as an installation guide structure. The bending direction of the arc-shaped bent plate is away from the air inlet at the blow-molded air inlet pipe joint. When the blow-molded air inlet pipe extends into the lower housing of the air filter, the arc-shaped bent plate assists the guide barb to engage with the long strip hollow, thus playing a guiding role.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) Compared with the traditional solution, the blow-molded air inlet pipe has a conical boss as a guide and positioning structure. At the same time, it is combined with the conical notch on the main wall of the air filter lower housing as a guide and positioning structure, and the arc-shaped bent plate as an installation guide structure. This allows the blow-molded air inlet pipe to be quickly and firmly attached to the air filter lower housing. In particular, it can be automatically aligned in the subsequent automatic mechanical assembly process, which helps to make the automatic assembly position accurate and stable.

[0019] (2) In this utility model, the snap-fit ​​structure of the blow-molded air intake pipe uses long barbs, and the snap-fit ​​structure of the corresponding air filter lower housing uses long hollows. The pull-out force is large and it is not easy to loosen. It also avoids the tearing failure of the blow-molded air intake pipe due to the excessively long hollows.

[0020] (3) In this utility model, the blow-molded connection is stable and reliable due to the support structure of the support column, and is not easy to collapse or become soft.

[0021] (4) The product of this utility model has a compact design, is easy to manufacture and process, and saves costs. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the lower housing section of an air filter with a snap-fit ​​structure in the prior art.

[0023] Figure 2 A three-dimensional structural diagram of a blow-molded air inlet pipe with a snap-fit ​​structure in the prior art;

[0024] Figure 3 This is a three-dimensional schematic diagram of the assembly of a blow-molded air intake pipe with a snap-fit ​​structure and the lower housing of an air filter in the prior art.

[0025] Figure 4 This is a top view schematic diagram of the assembly of a blow-molded air intake pipe with a snap-fit ​​structure and the lower housing of an air filter in the prior art.

[0026] Figure 5 This is a schematic cross-sectional view of the assembly of a blow-molded air intake pipe with a snap-fit ​​structure and the lower housing of an air filter in the prior art.

[0027] Figure 6This is a partial three-dimensional structural diagram of the lower housing of the air filter with a snap-fit ​​structure in an embodiment of the present utility model;

[0028] Figure 7 This is a partial three-dimensional structural diagram of the blow-molded air inlet pipe with a snap-fit ​​structure in an embodiment of this utility model;

[0029] Figure 8 This is a left-side view of the assembly of the blow-molded air intake pipe with a snap-fit ​​structure and the lower housing of the air filter in an embodiment of this utility model.

[0030] Figure 9 This is a partially enlarged structural diagram of the guide and positioning structure in an embodiment of this utility model;

[0031] Figure 10 This is a partially enlarged structural diagram of the snap-fit ​​structure and the installation guide structure in the embodiments of this utility model;

[0032] Figure 11 This is a top view of the assembly of the blow-molded air inlet pipe with a snap-fit ​​structure and the lower housing of the air filter in an embodiment of this utility model.

[0033] Figure 12 This is a left-side view of the assembly of the blow-molded air intake pipe with a snap-fit ​​structure and the lower housing of the air filter after being inverted in this embodiment of the present invention.

[0034] Figure 13 This is a partial schematic diagram of the assembly cross-section of the blow-molded air inlet pipe with snap-fit ​​structure and the lower housing of the air filter after being inverted in an embodiment of this utility model.

[0035] Figure 14 This is a three-dimensional structural diagram of a blow-molded air inlet pipe with a snap-fit ​​structure in an embodiment of this utility model;

[0036] Figure 15 This is a schematic diagram of the main structure of the blow-molded air inlet pipe with a snap-fit ​​structure in an embodiment of this utility model;

[0037] Figure 16 This is a top view of the blow-molded air inlet pipe with a snap-fit ​​structure in an embodiment of the present utility model;

[0038] Figure 17 This is a bottom view of the blow-molded air inlet pipe with a snap-fit ​​structure in an embodiment of this utility model;

[0039] Figure 18 This is a schematic diagram of the left-side view of the blow-molded air inlet pipe with a snap-fit ​​structure after it has been inverted in an embodiment of this utility model.

[0040] Explanation of markings in the diagram:

[0041] 10—Lower housing of air filter; 101—Barbs;

[0042] 20—Blow-molded air inlet pipe; 201—Hollowed-out design;

[0043] 1—Lower housing of air filter; 11—Long strip cutout; 12—Conical notch; 13—Arc-shaped curved plate;

[0044] 2—Blow-molded air intake pipe, 21—Long barb, 22—Conical boss, 23—Support column. Detailed Implementation

[0045] The present invention will now be described in detail with reference to specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0046] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., used to describe a common object only indicate different instances of the same object, and are not intended to imply that the objects described in this way must be in a given order, whether temporally, spatially, sequentially, or in any other way.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] Example:

[0049] A blow-molded air inlet pipe with a snap-fit ​​structure, such as Figure 7 and Figure 8 As shown, the blow-molded air intake pipe 2 is snapped into the lower housing 1 of the air filter. The surface of the blow-molded air intake pipe 2 has a barbed snap-fit ​​structure at the snap-fit ​​point. The main body wall of the lower housing 1 of the air filter has a hollowed-out snap-fit ​​structure. The blow-molded air intake pipe 2 and the lower housing 1 of the air filter are snapped together through the interaction of the barbs and the hollowed-out structure.

[0050] The surface of the blow-molded air intake pipe 2 is provided with a guide positioning structure with a boss at the snap-fit ​​point. The main body wall of the air filter lower housing 1 is provided with a guide positioning structure with a notch. The blow-molded air intake pipe 2 and the air filter lower housing 1 are guided to snap-fit ​​through the cooperation of the boss and the notch, and the positioning prevents the blow-molded air intake pipe 2 from rotating during the snap-fit ​​process.

[0051] like Figure 11 , Figure 12 , Figure 16 and Figure 17 As shown, the surface of the blow-molded air inlet pipe 2 is provided with long barbs 21 on the upper and lower surfaces of the air inlet at the snap-fit ​​joint;

[0052] The long barbs 21 on the lower surface extend into the lower housing 1 of the air filter after the blow-molded air inlet pipe 2 is inserted and engage with the hollow part.

[0053] The long barbs 21 on the upper surface extend into the lower housing 1 of the air filter after the blow-molded air inlet pipe 2, and engage with the main body wall of the lower housing 1 of the air filter.

[0054] The length of the barb 21 can be adjusted according to the required insertion and extraction force. Since the hollowing utilizes the main wall of the lower housing 1 of the air filter, the blow-molded air inlet pipe 2 will not be prone to breakage due to the excessive length of the hollowing.

[0055] like Figure 9 and Figure 18 As shown, the blow-molded air intake pipe 2 has tapered protrusions 22 on the left and right surfaces of the air intake at the snap-fit ​​joint. The size of the tapered protrusions 22 near the lower housing 1 of the air filter is smaller than that far from the lower housing 1 of the air filter. The protrusions can achieve automatic centering, and the assembly position is accurate and stable. After snap-fitting, the blow-molded air intake pipe 2 is not easy to loosen. The small head and large tail can help the protrusions to snap into the notch more easily and strengthen the guiding role of the protrusions.

[0056] like Figure 14 and Figure 15 As shown, a support column 23 is provided between the upper and lower surfaces of the air inlet at the snap-fit ​​joint inside the blow-molded air inlet pipe 2 as a blow-molding support structure. The air inlet adopts the blow molding process, and the material is generally soft. Therefore, especially for air inlets with a large span between the left and right surfaces of the air inlet at the snap-fit ​​joint, they are prone to collapse inward. Adding the support column 23 can prevent the air inlet from collapsing and make the snap-fit ​​more secure.

[0057] An air filter with a snap-fit ​​structure, such as Figure 6 As shown, the air filter lower housing 1 is connected to the blow-molded air intake pipe by a snap-fit ​​structure with a hollow snap-fit ​​structure on the main body wall and a notch-shaped guide positioning structure on the main body wall of the air filter lower housing 1.

[0058] like Figure 13As shown, the main body wall of the lower housing 1 of the air filter has a long strip of hollow 11 on the lower surface of the air inlet corresponding to the snap-fit ​​of the blow-molded air inlet pipe 2. The long strip of hollow 11 is adapted to the long strip of barb 21. The hollow prevents the barb from falling off. Since the main body wall of the lower housing 1 of the air filter is used as the limit on the side of the barb, the insertion length of the mold core is reduced, and the mold manufacturing is easier, while saving the production time of the product.

[0059] The main body wall of the lower housing 1 of the air filter is provided with a conical notch 12 on the left and right surfaces of the air inlet corresponding to the snap-fit ​​of the blow-molded air inlet pipe 2. The size of the conical notch 12 near the blow-molded air inlet pipe 2 is larger than that far from the blow-molded air inlet pipe 2. The conical notch 12 is adapted to the conical boss 22.

[0060] like Figure 10 As shown, the main wall of the lower housing 1 of the air filter has an arc-shaped bent plate 13 extending outward from the same side as the long strip hollow 11 as an installation guide structure. The bending direction of the arc-shaped bent plate 13 is away from the air inlet at the connection of the blow-molded air inlet pipe 2. When the blow-molded air inlet pipe 2 extends into the lower housing 1 of the air filter, the arc-shaped bent plate 13 assists the guide barb 21 to engage with the long strip hollow 11, thus playing a guiding role.

[0061] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A blow-molded intake pipe having a snap-fit structure, characterized by, The blow-molded air intake pipe (2) is snapped into the lower housing (1) of the air filter. The surface of the blow-molded air intake pipe (2) has a barbed snap-fit ​​structure at the snap-fit ​​point. The main body wall of the lower housing (1) of the air filter has a hollow snap-fit ​​structure. The blow-molded air intake pipe (2) and the lower housing (1) of the air filter are snapped together by the combination of barbs and hollows. The blow-molded air inlet pipe (2) has a boss at the snap-fit ​​point on its surface, and the air filter lower housing (1) has a notch on its main body wall, so that the blow-molded air inlet pipe (2) and the air filter lower housing (1) are snap-fitted together and positioned.

2. The blow-molded air inlet pipe with a snap-fit ​​structure according to claim 1, characterized in that, The blow-molded air inlet pipe (2) has long barbs (21) on the upper and lower surfaces of the air inlet at the snap-fit ​​joint.

3. A blow-molded air inlet pipe with a snap-fit ​​structure according to claim 2, characterized in that, The long barbs (21) on the lower surface extend into the lower housing (1) of the air filter after the blow-molded air inlet pipe (2) is inserted and engaged with the hollow part.

4. A blow-molded air inlet pipe with a snap-fit ​​structure according to claim 2, characterized in that, The long barbs (21) on the upper surface are inserted into the lower housing (1) of the air filter by the blow-molded air intake pipe (2) and then engage with the main body wall of the lower housing (1) of the air filter.

5. A blow-molded air inlet pipe with a snap-fit ​​structure according to claim 1, characterized in that, The blow-molded air inlet pipe (2) has a tapered boss (22) on the left and right surfaces of the air inlet at the snap-fit ​​joint. The size of the tapered boss (22) near the lower housing (1) of the air filter is smaller than that far from the lower housing (1) of the air filter.

6. A blow-molded air inlet pipe with a snap-fit ​​structure according to claim 1, characterized in that, The blow molding air inlet pipe (2) has a support column (23) between the upper and lower surfaces of the air inlet at the snap-fit ​​joint as a blow molding support structure.

7. An air filter with a snap-fit ​​structure, characterized in that, The air filter is snap-fitted to the blow-molded air intake pipe as described in any one of claims 1 to 6. The main body wall of the lower housing (1) of the air filter has a hollow snap-fit ​​structure, and the main body wall of the lower housing (1) of the air filter has a notch-shaped guide positioning structure.

8. An air filter with a snap-fit ​​structure according to claim 7, characterized in that, The main body wall of the lower housing (1) of the air filter is provided with a long strip perforation (11) on the lower surface of the air inlet corresponding to the snap-fit ​​of the blow-molded air inlet pipe (2), and the long strip perforation (11) is adapted to barbs.

9. An air filter with a snap-fit ​​structure according to claim 7, characterized in that, The main body wall of the lower housing (1) of the air filter is provided with a conical notch (12) on the left and right surfaces of the air inlet corresponding to the snap-fit ​​of the blow-molded air inlet pipe (2). The size of the conical notch (12) near the blow-molded air inlet pipe (2) is larger than that far away from the blow-molded air inlet pipe (2). The conical notch (12) is adapted to the boss.

10. An air filter with a snap-fit ​​structure according to claim 7, characterized in that, The main wall of the lower housing (1) of the air filter has an arc-shaped bending plate (13) extending outward from the same hollowed-out side as an installation guide structure. The bending direction of the arc-shaped bending plate (13) is away from the air inlet at the snap-fit ​​of the blow-molded air inlet pipe (2).

Images