Filter for automobile air suspension

Abstract

A filter for an automobile air suspension comprises an upper shell and a lower shell, a filter cavity is formed between the upper shell and the lower shell, a filter element of an annular cylinder structure is arranged in the filter cavity, the upper end face of the filter element is attached and bonded to the top wall of the upper shell, an air outlet is formed in the middle of the upper shell, and the air outlet is communicated with a center hole; the end face of the lower end of the filter element is attached and bonded to the lower end cover, the lower end cover blocks a lower end opening of the center hole, a first gap is reserved between the lower end face of the lower end cover and the bottom wall of the lower shell, a second gap is reserved between the outer wall of the filter element and the inner wall of the filter cavity, the second gap is communicated with the first gap, and an air inlet is formed in the bottom wall of the lower shell; the lower end cover is bonded with the filter element, then the filter element is bonded on the upper shell, the lower end cover, the filter element, the upper shell and the lower shell form an integral structure, the air inlet is right opposite to the lower end cover, and high-pressure air flows through the air purifier in an external-in and internal-out mode, so that the stability and the sealing performance of the structure are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to an air filter, in particular to a filter for automobile air suspension. BACKGROUND

[0002] The air suspension system refers to the vehicle suspension system with air spring replacing the ordinary spring as the elastic element, and the air suspension system generally comprises air spring, air supply module and control module etc. Among them, the filter in the air supply module needs to filter clean gas for the air tank of the automobile suspension, and at the same time, the filter needs to have high sealing property and structural stability, and can bear large air pressure. The air filter disclosed in publication No. CN208900248U and the air filter disclosed in publication No. CN206234023U both disclose the filter for filtering air, but the stability and sealing property of the internal structure of both cannot meet the use requirements of the air suspension system. SUMMARY

[0003] In view of the requirements in the prior art, the utility model provides a filter for automobile air suspension, aiming to ensure the stability and sealing property of the internal structure of the filter.

[0004] A filter for automobile air suspension, comprising an upper shell and a lower shell, the upper shell and the lower shell are connected in butt joint, and a filter cavity is formed between the upper shell and the lower shell, a filter element in the form of a ring-shaped cylindrical structure is arranged in the filter cavity, the upper end face of the filter element is attached to the top wall of the upper shell, a gas outlet is formed in the middle part of the upper shell corresponding to the center hole of the filter element, and the gas outlet is in communication with the center hole; the lower end face of the filter element is attached to the lower end cover, the lower end cover blocks the lower end port of the center hole, and the lower end face of the lower end cover is spaced apart from the bottom wall of the lower shell to form a first gap, the outer wall of the filter element is spaced apart from the inner wall of the filter cavity to form a second gap, the second gap is in communication with the first gap, and an air inlet is formed in the bottom wall of the lower shell, and the air inlet is in communication with the second gap.

[0005] Further, vertical support blocks are distributed around the lower end cover in the first gap, one side of the vertical support block is in contact with the lower end cover, and the other side of the vertical support block is integrally arranged with the inner wall of the lower shell; horizontal support blocks are distributed around the edge of the lower end cover in the second gap, one side of the horizontal support block is in contact with the lower end cover, and the other side of the horizontal support block is integrally arranged with the lower end cover.

[0006] Further, the upper end of the vertical support block is in the form of a wedge-shaped structure with a small upper end and a large lower end, the wedge-shaped structure is located above the lower end cover, and the inclined surface of the wedge-shaped structure gradually moves away from the filter element from bottom to top.

[0007] Further, a first annular cylinder is integrally arranged on the circumference of the lower end cover, and the outer wall of the first annular cylinder is attached to the vertical support block.

[0008] Further, the outer end of the transverse support block and the lower end of the vertical support block are integrally arranged.

[0009] Further, an annular groove with an upward opening is integrally arranged on the upper end of the lower shell, and the upper part of the inner wall on both sides of the annular groove is provided with an annular sunken platform; an annular skirt is integrally arranged on the lower shell at the position corresponding to the annular groove, the annular skirt covers the groove opening of the annular groove, and an annular protrusion is integrally arranged on the annular skirt and is inserted into the annular groove and friction welded with the bottom of the inner wall of the annular groove.

[0010] Further, the vertical section of the annular protrusion is a conical structure with a small lower part and a large upper part.

[0011] Further, an upper connector is integrally arranged on the top surface of the upper shell at the position corresponding to the air outlet, and a lower connector is integrally arranged on the bottom surface of the lower shell at the position corresponding to the air inlet.

[0012] Further, the upper shell and the lower shell are made of plastic.

[0013] Further, a second annular cylinder is integrally arranged on the inner side of the top wall of the upper shell at the position corresponding to the center hole, and the second annular cylinder is sleeved in the upper end of the filter core and close to the side wall of the center hole.

[0014] The beneficial effects of the present application are as follows: the lower end cover is bonded with the filter core, and the filter core is bonded on the upper shell, so that the lower end cover, the filter core, the upper shell and the lower shell form an integral structure, and the air inlet is directly opposite to the lower end cover, so that the high-pressure air flows through the present application in the form of outside-in, thereby ensuring the stability and sealing performance of the structure of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present application;

[0016] Figure 2 It is a sectional view of the present application;

[0017] Figure 3 It is a sectional view of the lower shell in the present application;

[0018] Figure 4 It is a sectional view of the upper shell in the present application. DETAILED DESCRIPTION

[0019] The utility model will be described in detail below with reference to the drawings. The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model and cannot be interpreted as a limitation on the utility model. The left, middle, right, top, bottom and other orientation terms in the embodiments of the utility model are only relative concepts or are referenced to the normal use state of the product, and should not be considered as limiting.

[0020] A filter for an automobile air suspension, as shown in Figure 1 and Figure 2 The utility model discloses a filter for automobile air suspension, which comprises an upper shell 1 and a lower shell 2 both made of plastic material, the upper shell 1 and the lower shell 2 are connected in butt joint, and a filter cavity is formed between the upper shell 1 and the lower shell 2, a filter core 3 in the form of a ring-shaped cylindrical structure is arranged in the filter cavity, the filter core 3 is made of filter paper, the upper end face of the filter core 3 is attached to the top wall of the upper shell 1, a gas outlet 13 is formed in the middle of the upper shell 1 corresponding to the position of the central hole 31 of the filter core 3, the gas outlet 13 is in communication with the central hole 31, a second ring-shaped cylinder 15 is integrally arranged on the inner side of the top wall of the upper shell 1 corresponding to the position of the central hole 31, the second ring-shaped cylinder 15 is sleeved on the upper end of the filter core 3 and close to the side wall of the central hole 31, thereby reducing the air flow at the upper part of the filter core 3 and protecting the attachment relationship between the filter core 3 and the upper shell 1, the lower end face of the filter core 3 is attached to a lower end cover 33, the lower end cover 33 blocks the lower end port of the central hole 31, a first gap is left between the lower end face of the lower end cover 33 and the bottom wall of the lower shell 2, a second gap is left between the outer wall of the filter core 3 and the inner wall of the filter cavity, the second gap is in communication with the first gap, an air inlet 23 is formed in the bottom wall of the lower shell 2, and the air inlet 23 is in communication with the second gap, in order to improve the stability of the lower end cover 33 in the filter cavity, a Figure 3As shown, vertical support blocks 25 are distributed around the lower end cover 33 within the first gap. One side of the vertical support block 25 contacts the lower end cover 33, and the other side of the vertical support block 25 is integrally formed with the inner wall of the lower housing 2. The upper end of the vertical support block 25 is a wedge-shaped structure that is smaller at the top and larger at the bottom. The wedge-shaped structure is located above the lower end cover, and the inclined surface of the wedge-shaped structure gradually moves away from the filter element 3 from bottom to top, thereby facilitating the downward installation of the lower end cover 33. Transverse support blocks 24 are distributed around the edge of the lower end cover 33 within the second gap. One side of the transverse support block 24 contacts the lower end cover 33. The other side of the transverse support block 24 is integrated with the lower end cover 33. The outer end of the transverse support block 24 and the lower end of the vertical support block 25 are integrated, thereby improving the structural strength of both. The vertical support block 25 and the transverse support block 24 limit the radial and axial movement of the lower end cover 33, respectively. A first annular cylinder 32 is integrated on the circumference of the lower end cover 33. The outer wall of the first annular cylinder 32 is in contact with the vertical support block 25, thereby increasing the support area between the lower end cover 33 and the vertical support block 25, and further improving the stability of the lower end cover 33.

[0021] To enhance the connection strength and sealing between the upper shell 1 and the lower shell 2, an upward-opening annular groove 26 is integrally provided on the upper end port of the lower shell 2, and annular recesses 27 are provided on the upper part of the inner walls on both sides of the annular groove 26; combined with Figure 4 As shown, an annular skirt 12 is integrally provided on the lower housing 2 at the position corresponding to the annular groove 26. The annular skirt 12 covers the groove opening of the annular groove 26. An annular protrusion 14 is integrally provided on the annular skirt 12. In order to facilitate friction welding between the annular protrusion 14 and the annular groove 26, the vertical cross section of the annular protrusion 14 is a tapered structure with a smaller bottom and a larger top. The annular protrusion 14 is inserted into the annular groove 26 and friction welded to the bottom of the inner wall of the annular groove 26.

[0022] In addition, an upper connector 11 is integrally provided on the top surface of the upper housing 1 at the position corresponding to the air outlet 13, and a lower connector 22 is integrally provided on the bottom surface of the lower housing 2 at the position corresponding to the air inlet 23; a plug-in seat 28 is integrally provided in the middle of the outer wall of the lower housing 2.

[0023] In use, the airflow first enters the filter chamber through the lower nozzle 22 and the air inlet 23, then passes around the lower end cover 33 in the second gap and enters the first gap. The gas passes through the filter element 3 in an external-in-internal manner, and enters the air compressor through the air outlet 13 and the upper nozzle 11 to filter the gas cleanly for the car suspension air tank.

[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 filter for an automobile air suspension, comprising an upper housing and a lower housing, the upper housing and the lower housing being connected in abutment to form a filter cavity between the two, a filter element in the form of a ring-shaped cylindrical structure being arranged in the filter cavity, characterized in that: The upper end face of the filter core is attached and bonded with the top wall of the upper shell, a gas outlet is arranged at the middle of the upper shell corresponding to the position of the central hole of the filter core, and the gas outlet is in communication with the central hole; the lower end face of the filter core is attached and bonded with the lower end cover, the lower end cover blocks the lower end port of the central hole, and a first gap is left between the lower end face of the lower end cover and the bottom wall of the lower shell; a second gap is left between the outer wall of the filter core and the inner wall of the filter cavity, and the second gap is in communication with the first gap; an air inlet is arranged on the bottom wall of the lower shell, and the air inlet is in communication with the second gap.

2. The filter for an automotive air suspension according to claim 1, characterized by: Vertical supporting blocks are distributed around the lower end cover in the first gap, one side of the vertical supporting blocks is in contact with the lower end cover, and the other side of the vertical supporting blocks is integrally arranged with the inner wall of the lower shell; horizontal supporting blocks are distributed around the edge of the lower end cover in the second gap, one side of the horizontal supporting blocks is in contact with the lower end cover, and the other side of the horizontal supporting blocks is integrally arranged with the lower end cover.

3. The filter for an automotive air suspension according to claim 2, characterized by: The upper end of the vertical supporting block is a wedge-shaped structure with a small upper end and a large lower end, the wedge-shaped structure is located above the lower end cover, and the inclined surface of the wedge-shaped structure gradually moves away from the filter core from bottom to top.

4. The filter for an automotive air suspension according to claim 2, characterized by: A first annular cylinder is integrally arranged on the circumference of the lower end cover, and the outer wall of the first annular cylinder is attached to the vertical supporting block.

5. The filter for an automotive air suspension according to claim 2, characterized by: The outer end of the horizontal supporting block and the lower end of the vertical supporting block are integrally arranged.

6. The filter for an automotive air suspension according to claim 1, characterized by: An upwardly opening annular groove body is integrally arranged on the upper end port of the lower shell, and the upper part of the inner wall of the annular groove body on both sides is provided with an annular sunken platform; an annular skirt is integrally arranged on the lower shell corresponding to the position of the annular groove body, the annular skirt covers the groove opening of the annular groove body, an annular protrusion is integrally arranged on the annular skirt, and the annular protrusion is inserted into the annular groove body and friction welded with the bottom of the inner wall of the annular groove body.

7. The filter for an automotive air suspension according to claim 6, characterized by: The vertical section of the annular protrusion is a tapered structure with a small lower end and a large upper end.

8. The filter for an automotive air suspension according to claim 1, characterized by: An upper connector is integrally arranged on the top surface of the upper shell corresponding to the position of the gas outlet, and a lower connector is integrally arranged on the bottom surface of the lower shell corresponding to the position of the air inlet.

9. The filter for an automotive air suspension according to claim 1, characterized by: Both the upper shell and the lower shell are made of plastic material.

10. The filter for an automotive air suspension according to claim 1, characterized by: A second annular cylinder is integrally arranged on the inner side of the top wall of the upper shell corresponding to the position of the central hole, and the second annular cylinder is sleeved in the upper end of the filter core and close to the side wall of the central hole.

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