A central filter

Abstract

This utility model discloses a central filter, including a filter box, a first air inlet pipe, a box cover, a second air inlet pipe, a filter element, and a connecting structure. The air duct and connecting cylinder are fixed together. During installation, the connecting cylinder is fitted onto the second air inlet pipe, and the positioning rod is inserted into the stop block, so that the locking rod corresponds to the locking slot. Then, pushing the retaining ring causes the push groove to push the locking rod to rotate, and one end of the locking rod rotates out of the locking rod groove and into the locking slot, thereby limiting the connecting cylinder on the second air inlet pipe for convenient installation. Sliding the retaining ring to the right causes the locking rod to rotate out of the locking slot under the action of the torsion spring, releasing the limitation on the connecting cylinder for convenient disassembly. This allows for convenient disassembly of the air duct during subsequent disassembly and maintenance, making the filter element replacement process simpler.

Description

Technical Field

[0001] This utility model relates to the field of automotive filter technology, specifically a central filter. Background Technology

[0002] As an important component of the engine intake system, the car air filter is mainly responsible for filtering dust, particulate matter and other impurities in the air and protecting the internal components of the engine.

[0003] Existing patent CN104548793A discloses an air filter for automobiles, which has excellent permeation and filtration performance and is washable and semi-permanent.

[0004] The aforementioned patents or existing central filters have the following problems:

[0005] Over time, the filter element of the existing central filter will accumulate impurities, so it needs to be disassembled and cleaned regularly. When disassembling the cover, the air duct and the second air inlet duct need to be separated first. However, the existing air duct and the second air inlet duct are connected by a clamp, which is inconvenient to disassemble and assemble, resulting in a complicated and inconvenient disassembly and assembly of the cover. Utility Model Content

[0006] The purpose of this invention is to provide a central filter to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a central filter, comprising a filter box, a first air inlet pipe provided on the filter box, a box cover provided on the filter box, a second air inlet pipe provided on the box cover, a filter element assembled in the filter box, a connecting structure provided on the second air inlet pipe, the connecting structure including a bayonet, a bayonet provided on the second air inlet pipe, a connecting cylinder sleeved on the second air inlet pipe, a locking rod groove provided in the connecting cylinder, a locking rod connected in the locking rod groove, a locking ring connected to the connecting cylinder, and a push groove provided on the surface of the locking ring.

[0008] Preferably, the surface of the second air inlet pipe is provided with a stop block, and when the connecting cylinder is pressed against the surface of the stop block, the position of the locking rod groove corresponds to the position of the locking opening.

[0009] Preferably, the surface of the connecting cylinder is provided with a positioning rod, which can be inserted into the stop block, and the positioning rod and the locking groove are on the same straight line.

[0010] Preferably, the surface of the connecting cylinder is provided with a retaining element, which can be connected to the stop block.

[0011] Preferably, a push rod is connected to the connecting cylinder, a screw is connected to the end of the push rod, a threaded sleeve is fixed in the connecting cylinder, a fixing block is fixed in the connecting cylinder, a reinforcing block is connected to the fixing block, a reinforcing cylinder is provided in the retaining ring, a spring is assembled in the reinforcing cylinder, and a top plate is fixed to the end of the spring.

[0012] Preferably, the surface of the fixing block is planar, and the fixing block is in contact with the inner surface of the reinforcing block.

[0013] Preferably, the reinforcing block is inserted into the reinforcing cylinder and pushes the top plate, causing the spring to be in a state of tension.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The duct and connecting sleeve are fixed together. During installation, the connecting sleeve is fitted onto the second air inlet duct, and the positioning rod is inserted into the stop block so that the locking rod and the locking slot correspond. Then, the retaining ring is pushed to drive the push groove to push the locking rod to rotate. One end of the locking rod rotates out of the locking rod groove and into the locking slot, thereby limiting the connecting sleeve on the second air inlet duct to achieve the beneficial effect of convenient installation. Slide the retaining ring to the right, and the locking rod rotates out of the locking slot under the action of the torsion spring, thereby releasing the limitation on the connecting sleeve to achieve the beneficial effect of convenient disassembly. This makes it easier to disassemble the duct during subsequent disassembly and maintenance, and makes the process of replacing the filter element simpler. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a front view structural diagram of the present utility model;

[0018] Figure 3 This is a side sectional view of the present invention.

[0019] Figure 4 This is a partial enlarged view of region A of this utility model;

[0020] Figure 5 This is a partial enlarged view of region B of this utility model.

[0021] In the diagram: Filter box-1, First air inlet pipe-2, Box cover-3, Second air inlet pipe-4, Filter element-5, Connecting structure-6, Air duct-7, Bayonet-61, Connecting cylinder-62, Locking rod groove-63, Locking rod-64, Locking ring-65, Push groove-66, Stop block-67, Stop block-67, Positioning rod-68, Clamping piece-69, Push rod-610, Screw-611, Threaded sleeve-612, Fixing block-613, Reinforcing block-614, Reinforcing cylinder-615, Spring-616, Top plate-617. Detailed Implementation

[0022] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.

[0023] Please see Figure 1 , Figure 2 and Figure 3 This utility model provides a central filter, including a filter box 1, a first air inlet pipe 2 on the filter box 1, a box cover 3 installed on the filter box 1, a second air inlet pipe 4 on the box cover 3, a filter element 5 assembled in the filter box 1, and a connecting structure 6 on the second air inlet pipe 4.

[0024] Specifically, the air duct 7 is connected to the second air inlet duct 4 through the connecting structure 6. External air enters the second air inlet duct 4 through the air duct 7, and then enters the filter box 1 through the second air inlet duct 4. When the air passes through the filter element 5, it will filter out the impurities in it to achieve air filtration. Then it enters the unit through the first air inlet duct 2.

[0025] Please see Figure 3 and Figure 4 This utility model provides a central filter. The connecting structure 6 includes a bayonet 61. The bayonet 61 is provided on the second air inlet pipe 4. A connecting cylinder 62 is sleeved on the second air inlet pipe 4. A locking groove 63 is provided in the connecting cylinder 62. A locking rod 64 is provided in the locking groove 63. The locking rod 64 is rotatably connected in the locking groove 63 by a torsion spring. When the torsion spring is in its unloaded natural state, the upper end of the locking rod 64 protrudes from the surface of the connecting cylinder 62. A retaining ring 65 is slidably connected to the connecting cylinder 62. The surface of the retaining ring 65 is provided with... The push groove 66 and the second air inlet pipe 4 are provided with a stop block 67. When the connecting cylinder 62 is pressed on the surface of the stop block 67, the position of the locking rod groove 63 corresponds to the position of the locking opening 61. The surface of the connecting cylinder 62 is provided with a positioning rod 68, which can be inserted into the stop block 67. The positioning rod 68 and the locking rod groove 63 are on the same straight line so that the locking rod 64 can be locked in the locking rod groove 63. The surface of the connecting cylinder 62 is provided with a locking piece 69, which can be connected to the stop block 67 to achieve a pre-fixed connection and improve stability.

[0026] Specifically, the air duct 7 is fixed to the connecting cylinder 62. During installation, the connecting cylinder 62 is fitted onto the second air inlet duct 4, and the positioning rod 68 is inserted into the stop block 67, so that the locking rod 64 corresponds to the bayonet 61. Then, the retaining ring 65 is pushed to drive the push groove 66 to push the locking rod 64 to rotate. One end of the locking rod 64 rotates out of the locking rod groove 63 and into the bayonet 61, thereby limiting the connecting cylinder 62 on the second air inlet duct 4 to achieve the beneficial effect of convenient installation. Sliding the retaining ring 65 to the right, the locking rod 64 rotates out of the bayonet 61 under the action of the torsion spring, thereby releasing the limitation on the connecting cylinder 62 to achieve the beneficial effect of convenient disassembly. This achieves the beneficial effect of convenient disassembly of the air duct 7 during subsequent disassembly and maintenance, making the process of replacing the filter element 5 more convenient.

[0027] Please see Figure 4 and Figure 5 A push rod 610 is connected to the connecting cylinder 62, and a screw 611 is rotatably connected to the end of the push rod 610. A threaded sleeve 612 is fixed in the connecting cylinder 62, and the screw 611 is threadedly connected to the threaded sleeve 612. A fixing block 613 is fixed in the connecting cylinder 62, and a reinforcing block 614 is connected to the fixing block 613. A reinforcing cylinder 615 is provided in the retaining ring 65, and a spring 616 is assembled in the reinforcing cylinder 615. A top plate 617 is fixed to the end of the spring 616. The surface of the fixing block 613 is flat, and the fixing block 613 fits against the inner surface of the reinforcing block 614 to ensure that the reinforcing block 614 is not prone to skewing. The reinforcing block 614 is inserted into the reinforcing cylinder 615 and pushes the top plate 617, so that the spring 616 is in a state of tension. When the pressure on the reinforcing block 614 is released, the reinforcing block 614 is pushed out of the reinforcing cylinder 615 under the action of the spring 616.

[0028] Specifically, after the retaining ring 65 is fixed on the connecting cylinder 62, the push rod 610 is pushed and then the reinforcing block 614 is pushed, causing it to slide on the surface of the fixing block 613 and then be inserted into the reinforcing cylinder 615. At the same time, the top plate 617 is pushed, causing the spring 616 to deform under force. The screw 611 is rotated to connect with the threaded sleeve 612. At this time, the reinforcing block 614 is inserted into the reinforcing cylinder 615 to reinforce the retaining ring 65, so that the retaining ring 65 is not easy to move or fall off when vibration occurs.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A central filter, comprising a filter box (1), wherein a first air inlet pipe (2) is provided on the filter box (1), a box cover (3) is provided on the filter box (1), a second air inlet pipe (4) is provided on the box cover (3), and a filter element (5) is assembled in the filter box (1), characterized in that: It also includes a connecting structure (6), which is provided on the second air inlet pipe (4). The connecting structure (6) includes a bayonet (61). The second air inlet pipe (4) is provided with a bayonet (61). A connecting cylinder (62) is fitted on the second air inlet pipe (4). A locking groove (63) is provided in the connecting cylinder (62). A locking rod (64) is connected in the locking groove (63). A retaining ring (65) is connected on the connecting cylinder (62). A push groove (66) is provided on the surface of the retaining ring (65).

2. A central filter according to claim 1, characterized in that: The second air inlet pipe (4) is provided with a stop block (67). When the connecting cylinder (62) is pressed on the surface of the stop block (67), the position of the locking groove (63) and the locking opening (61) are corresponding.

3. A central filter according to claim 2, characterized in that: The surface of the connecting cylinder (62) is provided with a positioning rod (68), which can be inserted into the stop block (67). The positioning rod (68) and the locking groove (63) are on the same straight line.

4. A central filter according to claim 3, characterized in that: The surface of the connecting cylinder (62) is provided with a locking element (69), which can be connected to the stop block (67).

5. A central filter according to claim 1, characterized in that: A push rod (610) is connected to the connecting cylinder (62), and a screw (611) is connected to the end of the push rod (610). A threaded sleeve (612) is fixed in the connecting cylinder (62). A fixing block (613) is fixed in the connecting cylinder (62). A reinforcing block (614) is connected to the fixing block (613). A reinforcing cylinder (615) is provided in the retaining ring (65). A spring (616) is assembled in the reinforcing cylinder (615). A top plate (617) is fixed to the end of the spring (616).

6. A central filter according to claim 5, characterized in that: The surface of the fixing block (613) is flat, and the fixing block (613) is in contact with the inner surface of the reinforcing block (614).

7. A central filter according to claim 5, characterized in that: The reinforcing block (614) is inserted into the reinforcing cylinder (615) and pushes the top plate (617) to make the spring (616) retract.

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