Quick release structure of air filter

Abstract

The utility model discloses an air filter quick-release structure which comprises a first shell, a second shell is arranged at the upper end of the first shell, an external air connecting pipe is fixedly arranged on one side of the first shell, an engine air inlet pipe is fixedly arranged on one side of the second shell, a filter element is movably arranged at the upper end of the interior of the first shell in a clamped mode, and an air inlet pipe is fixedly arranged on one side of the second shell. A groove is formed in the outer side surface of the upper end of the first shell, a reset telescopic rod is fixedly arranged in the groove, and a protection mechanism for preventing sundries from entering the engine air inlet pipe is arranged in the engine air inlet pipe. According to the utility model, the use effect is good, and a part of the filter element embedded into the first shell can be automatically popped out when the second shell is opened and the filter element needs to be replaced every time, so that a worker can conveniently detach the filter element.

Description

Technical Field

[0001] The utility model relates to the technical field of air filters, in particular to a quick-release structure of an air filter. Background Art

[0002] The main function of the automotive air filter is to provide clean air for the engine to prevent the engine from inhaling air with impurities and particles during operation, which increases the chance of wear. The air filter is mainly composed of a filter element and a housing. The filter element is the main filtering part and is responsible for filtering the gas.

[0003] In the prior art, the installation and disassembly of automobile air filters is very convenient. Generally, they are embedded and installed inside the shell through interference fit, without any other fixing structure. Such installation is more convenient. However, during disassembly, since the air filter is generally embedded and installed inside the shell through interference fit, and due to sealing requirements, the air filter should fit tightly around the shell, such disassembly is more troublesome than installation. Therefore, an air filter quick-release structure needs to be improved to address this problem. Utility Model Content

[0004] The utility model aims to provide an air filter quick-release structure to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an air filter quick-release structure, comprising a first shell, a second shell is arranged on the upper end of the first shell, an external air connecting pipe is fixedly arranged on one side of the first shell, an engine intake pipe is fixedly arranged on one side of the second shell, a filter element is movably engaged with the upper end of the first shell, a groove is arranged on the outer surface of the upper end of the first shell, a reset telescopic rod is fixedly arranged inside the groove, and a protective mechanism is arranged inside the engine intake pipe to prevent debris from entering the engine intake pipe.

[0006] Preferably, the protection mechanism includes a rotating shaft, a flap, a paddle, and an extrusion rod. The middle part of the inner side of the engine intake pipe is movably provided with a rotating shaft through a bearing, and a flap is fixedly provided on the outer surface of the rotating shaft, and the flap is arranged inside the engine intake pipe. One end of the rotating shaft is inserted through the engine intake pipe and extends to the outside of the engine intake pipe. The rotating shaft is fixedly provided with a paddle at the outer section of the engine intake pipe, and the outer surface of the upper end of the filter element is fixedly provided with an extrusion rod. When the filter element is disassembled and replaced, the second housing is in an open state, and the engine intake pipe is completely exposed to the outside. Although the engine is no longer working and will not inhale air at this time, there may still be a possibility that debris such as leaves float into the engine intake pipe. When the second housing and the first housing are disassembled, the device will automatically block and seal the engine intake pipe through the protection mechanism, so as to prevent debris from entering the engine intake pipe when the filter element is replaced; and when the first housing and the second housing are fixed and closed to each other, the engine intake pipe can be automatically conducted to ensure ventilation performance;

[0007] The conduction principle of the protection mechanism is as follows: the filter element of the device is fixed with an additional extrusion rod compared to the prior art. When the second housing is aligned with the first housing from top to bottom for installation, the extrusion rod will align with the position of the paddle. Figure 8 As shown, at this time, as the second shell moves downward, the squeezing rod will squeeze the paddle to rotate, so that the paddle drives the flap to rotate, and the flap rotates to a vertical state, so that the engine intake pipe can be opened to ensure ventilation performance; and when the second shell needs to be removed and the filter element needs to be replaced, the squeezing rod and the paddle are separated, and the paddle, the rotating shaft and the flap can be automatically reset under the action of the torsion spring.

[0008] Preferably, a reset torsion spring is provided on the outer surface of the shaft between the paddle and the engine intake pipe, and the reset torsion spring can automatically drive the paddle, shaft and flap to rotate and reset, so that the flap is in a horizontal state of sealing the engine intake pipe.

[0009] Preferably, rubber sealing rings are fixedly provided around the outer surface of the filter element, and the filter element is interference fit at the upper end of the interior of the first shell through the rubber sealing ring. In this way, the rubber sealing ring can ensure the sealing of the filter element and the inner side wall of the first shell, and there is no need to worry about the filter element being too tightly fit and difficult to remove. After the second shell is removed, the filter element loses its extrusion, and at this time, the elongation of the resetting telescopic rod can push the filter element to pop out a part of it from the interior of the first shell, thereby making it convenient for the staff to remove the filter element.

[0010] Preferably, the outer surfaces of the first shell and the second shell are both provided with locks, which can fix the first shell and the second shell together, and also facilitate quick disassembly, so that the second shell can be quickly opened to take out the filter element.

[0011] Preferably, a spring is arranged inside the resetting telescopic rod. After the filter element is installed and the second housing is closed, the resetting telescopic rod of the device is in a retracted state, that is, the spring inside the telescopic rod is in a compressed state.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model uses a rubber sealing ring to make the filter element interference fit on the first shell, which can ensure the sealing of the filter element and the inner side wall of the first shell. When the first shell and the second shell are fixed by buckles, the second shell can limit the filter element so that the filter element will not move in the installed position. When the second shell is disassembled, the filter element can be pushed to pop out a part of it from the inside of the first shell under the extension effect of the resetting telescopic rod, so that the staff can remove the filter element conveniently.

[0014] 2. When the second housing is disassembled to replace the filter element, the second housing is in an open state. At this time, the engine intake pipe is completely exposed. Although the engine is no longer working and will not inhale air, there is still a possibility that debris such as leaves float into the engine intake pipe. The device will automatically block and seal the engine intake pipe through a protective mechanism when the second housing and the first housing are disassembled, thereby preventing debris from entering the engine intake pipe when the filter element is replaced; and when the first housing and the second housing are fixed and closed to each other, the engine intake pipe can be automatically conducted to ensure ventilation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of an air filter quick-release structure of the utility model;

[0016] Figure 2 This is a cross-sectional view of the overall structure of an air filter quick-release structure of the utility model Figure 1 ;

[0017] Figure 3 This is a cross-sectional view of the overall structure of an air filter quick-release structure of the utility model Figure 2 ;

[0018] Figure 4 This is an overall structural view of the second housing in the air filter quick-release structure of the utility model;

[0019] Figure 5 This is an exploded view of an air filter quick-release structure of the utility model;

[0020] Figure 6 It is a cross-sectional view of a first housing in an air filter quick-release structure of the utility model;

[0021] Figure 7It is a cross-sectional view of the second housing in the quick-release structure of an air filter of the utility model;

[0022] Figure 8 This is an installation view of a first housing and a second housing in an air filter quick-release structure of the utility model;

[0023] Fig. 9 The utility model is an overall structural view of a protective mechanism in an air filter quick-release structure.

[0024] In the figure: 1. first shell; 2. second shell; 3. external air connection pipe; 4. engine air intake pipe; 5. filter element; 6. groove; 7. resetting telescopic rod; 8. rotating shaft; 9. flap; 10. paddle; 11. squeezing rod; 12. resetting torsion spring; 13. rubber sealing ring; 14. lock. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-9 The utility model provides a technical solution: an air filter quick-release structure, comprising a first shell 1, a second shell 2 is arranged on the upper end of the first shell 1, an outside air connecting pipe 3 is fixedly arranged on one side of the first shell 1, an engine intake pipe 4 is fixedly arranged on one side of the second shell 2, a filter element 5 is movably engaged with the upper end of the first shell 1, a groove 6 is arranged on the outer surface of the upper end of the first shell 1, a reset telescopic rod 7 is fixedly arranged inside the groove 6, and a protective mechanism is arranged inside the engine intake pipe 4 to prevent debris from entering the engine intake pipe 4.

[0027] The protection mechanism includes a rotating shaft 8, a flap 9, a paddle 10, and an extrusion rod 11. The rotating shaft 8 is movably arranged at the middle part of the inner side of the engine intake pipe 4 through a bearing, and a flap 9 is fixedly arranged on the outer surface of the rotating shaft 8. The flap 9 is arranged inside the engine intake pipe 4. One end of the rotating shaft 8 is inserted through the engine intake pipe 4 and extends to the outside of the engine intake pipe 4. The rotating shaft 8 is fixedly arranged with a paddle 10 at the outer section of the engine intake pipe 4. The outer surface of the upper end of the filter element 5 is fixedly arranged with an extrusion rod 11. When disassembling and replacing the filter element 5, the second shell The second housing 2 is in an open state, and the engine intake pipe 4 is completely exposed. Although the engine is no longer working and will not inhale air, there is still a possibility that debris such as leaves float into the engine intake pipe 4. The device will automatically block and seal the engine intake pipe 4 through a protective mechanism when the second housing 2 and the first housing 1 are disassembled, so that debris can be prevented from entering the engine intake pipe 4 when the filter element 5 is replaced; and when the first housing 1 and the second housing 2 are fixed and closed to each other, the engine intake pipe 4 can be automatically conducted to ensure ventilation performance;

[0028] The conduction principle of the protection mechanism is as follows: the filter element 5 of the device is fixed with an additional extrusion rod 11 compared to the prior art. When the second housing 2 is aligned with the first housing 1 from top to bottom for installation, the extrusion rod 11 will align with the position of the paddle 10, such as Figure 8 As shown, at this time, as the second housing 2 moves downward, the extrusion rod 11 will squeeze the paddle 10 to rotate, so that the paddle 10 drives the flap 9 to rotate, so that the flap 9 rotates to a vertical state, so that the engine intake pipe 4 can be connected to ensure ventilation performance; and when the second housing 2 needs to be disassembled to replace the filter element 5, the extrusion rod 11 and the paddle 10 are separated, and the paddle 10, the rotating shaft 8 and the flap 9 can be automatically reset under the action of the torsion spring;

[0029] A return torsion spring 12 is arranged on the outer surface of the rotating shaft 8 between the paddle 10 and the engine intake pipe 4, and the return torsion spring 12 can automatically drive the paddle 10, the rotating shaft 8 and the flap 9 to rotate and reset, so that the flap 9 is in a horizontal state of sealing the engine intake pipe 4;

[0030] The outer surface of the filter element 5 is fixedly provided with a rubber sealing ring 13 around the periphery. The filter element 5 is interference-engaged with the upper end of the inner part of the first housing 1 through the rubber sealing ring 13. In this way, the rubber sealing ring 13 can ensure the sealing of the filter element 5 and the inner side wall of the first housing 1, and there is no need to worry about the filter element 5 being too tightly engaged and difficult to remove. After the second housing 2 is removed, the filter element 5 loses its extrusion. At this time, the filter element 5 can be pushed to pop out a part of it from the inside of the first housing 1 under the elongation of the resetting telescopic rod 7, so that the staff can remove the filter element 5 conveniently.

[0031] The outer surfaces of the first shell 1 and the second shell 2 are both provided with lock buckles 14, which can fix the first shell 1 and the second shell 2 together, and can also facilitate quick disassembly, so as to quickly open the second shell 2 and take out the filter element 5;

[0032] The resetting telescopic rod 7 is provided with a spring inside. After the filter element 5 is installed and the second housing 2 is closed, the resetting telescopic rod 7 of the device is in a retracted state, that is, the spring inside the telescopic rod is in a compressed state.

[0033] Working principle: When using the device, the filter element 5 is interference-fitted on the first housing 1 through the rubber sealing ring 13, which can ensure the sealing of the filter element 5 and the inner side wall of the first housing 1. When the first housing 1 and the second housing 2 are fixed by buckles, the second housing 2 can limit the filter element 5 so that the filter element 5 is in the installed position and will not move. When disassembling the second housing 2, the filter element 5 can be pushed to pop out a part of the first housing 1 under the elongation of the resetting telescopic rod 7, so that the staff can remove the filter element 5 conveniently;

[0034] The filtering principle of the filter element 5 is as follows: the filter element 5 is located between the engine air intake pipe 4 and the outside air connecting pipe 3. The air entering the outside air connecting pipe 3 can only enter the upper end of the filter element 5 after being filtered from the lower end of the filter element 5, and then enter the engine air intake pipe 4;

[0035] When the second housing 2 is disassembled to replace the filter element 5, the second housing 2 is in an open state, and the engine intake pipe 4 is completely exposed. Although the engine is no longer working and will not inhale air, there is still a possibility that debris such as leaves may float into the engine intake pipe 4. The device will automatically block and seal the engine intake pipe 4 through a protective mechanism when the second housing 2 and the first housing 1 are disassembled, thereby preventing debris from entering the engine intake pipe 4 when the filter element 5 is replaced; and when the first housing 1 and the second housing 2 are fixed and closed to each other, the engine intake pipe 4 can be automatically opened to ensure ventilation performance.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air filter quick-release structure, comprising a first housing (1), characterized in that: A second shell (2) is arranged at the upper end of the first shell (1); an external air connection pipe (3) is fixedly arranged on one side of the first shell (1); an engine air intake pipe (4) is fixedly arranged on one side of the second shell (2); a filter element (5) is movably engaged with the upper end of the first shell (1); a groove (6) is arranged on the outer surface of the upper end of the first shell (1); a reset telescopic rod (7) is fixedly arranged inside the groove (6); and a protective mechanism is arranged inside the engine air intake pipe (4) to prevent foreign objects from entering the engine air intake pipe (4).

2. The air filter quick-release structure according to claim 1, characterized in that: The protection mechanism comprises a rotating shaft (8), a flap (9), a paddle (10), and an extrusion rod (11); the rotating shaft (8) is movably arranged at the middle part of the inner side of the engine intake pipe (4) through a bearing; the outer surface of the rotating shaft (8) is fixedly arranged with a flap (9); the flap (9) is arranged inside the engine intake pipe (4); one end of the rotating shaft (8) is inserted through the engine intake pipe (4) and extends to the outside of the engine intake pipe (4); the rotating shaft (8) is fixedly arranged with a paddle (10) at the outer section of the engine intake pipe (4); and the extrusion rod (11) is fixedly arranged on the outer surface of the upper end of the filter element (5).

3. The air filter quick-release structure according to claim 2, characterized in that: A return torsion spring (12) is arranged on the outer surface of the rotating shaft (8) between the paddle (10) and the engine intake pipe (4).

4. The air filter quick-release structure according to claim 1, characterized in that: A rubber sealing ring (13) is fixedly arranged around the outer surface of the filter element (5), and the filter element (5) is interference-engaged with the upper end of the interior of the first shell (1) through the rubber sealing ring (13).

5. The air filter quick-release structure according to claim 1, characterized in that: Lock buckles (14) are provided on the outer surfaces of the first shell (1) and the second shell (2).

6. The air filter quick-release structure according to claim 1, characterized in that: A spring is arranged inside the resetting telescopic rod (7).

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