Fuel filter assembly

Abstract

The utility model discloses a fuel filter assembly, and relates to the technical field of motor vehicles. The device comprises a main body assembly and a fixing assembly, the main body assembly comprises a filter cartridge and a filter element, the filter element is fixedly connected with the filter cartridge through the fixing assembly, the bottom end of the filter cartridge is communicated with an output pipe, and the top end of the filter element is provided with an oil pump plug and an oil pipe; the fixing assembly comprises an embedding groove formed in the top end of the filter cylinder, an embedding piece matched with the embedding groove is further fixed to the top end of the peripheral side of the filter element, and an inner groove is further formed in the top end of the filter cylinder. Through the arrangement of the fixing assembly, when the filter element is installed, the embedding piece is aligned with the embedding groove to be inserted into the embedding groove, and the arc surface of the embedding piece extrudes the limiting piece, so that the elastic piece is elastically deformed; after the embedding piece is completely inserted, the elastic piece is reset to drive the limiting piece to clamp the outer side of the embedding piece, so that the radial fixation of the filter element is realized, and the problems that the filter element and the filter cartridge are mostly connected through bolts and the mounting and the dismounting are relatively complicated in the existing scheme are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the motor vehicle related technical field, especially, a kind of fuel filter assembly. BACKGROUND

[0002] Fuel filter assembly is the key component responsible for purifying fuel in fuel supply system, usually by filter shell, filter element, inlet and outlet oil interface and sealing element etc. Its core function is to filter the impurities (such as dust, metal particles, colloid, etc.) contained in fuel, prevent these pollutants from entering the precision components such as fuel injection nozzle and fuel pump of engine, avoid wear, blockage or performance degradation. According to vehicle type and fuel type (gasoline or diesel), the structure design of assembly is different, some also integrated pressure regulation, oil-water separation (common for diesel vehicles) and other additional functions, installation position is mostly in the pipeline between fuel tank and engine, need to be replaced regularly to ensure filtering efficiency, is an important guarantee for maintaining normal operation and prolonging service life of engine.

[0003] But it still has the following disadvantages in actual use: the existing fuel filter cartridge and filter element are mostly fixedly connected by bolts, in order to ensure the stability of connection, multiple groups of bolts are needed, when replacing filter element, it needs to be disassembled, because the number of bolts is large, and special tools are also needed, which makes disassembly and installation more cumbersome. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of fuel filter assembly, the utility model is fixed subassembly by being set, solve the problem that filter element and filter cartridge are mostly connected by bolt in the prior art scheme, installation and disassembly are more cumbersome.

[0005] To solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a kind of fuel filter assembly, including main component and fixed component, main component includes filter cartridge and filter element, filter element is fixedly connected with filter cartridge by fixed component, filter cartridge bottom end is connected with output pipe, filter element top end is also provided with oil pump plug and oil pipe;

[0007] Fixed component includes the embedded groove of being opened in filter cartridge top end, filter element outer circumferential side top end is also fixed with the embedded part that is compatible with embedded groove, filter cartridge top end is also opened with inner groove, and the side wall on the inner groove is fixed with spring piece, and the end of spring piece away from the side wall of inner groove is fixed with the limiting piece compatible with embedded part, and the side surface of limiting piece is horizontally fixed with limiting rod, and limiting rod is movably connected on the side wall of inner groove.

[0008] Further, the fixing assembly further comprises a rotating disc rotatably connected to the top end of the inner groove, and the rotating disc is further fixed with an adjusting block.

[0009] Further, the contact surface between the fitting part and the limiting part is an arc surface.

[0010] Further, the elastic sheet, the limiting part, the limiting rod, the adjusting block and the adjusting part on the same side form a group and are arranged in a ring array with the center axis of the filter cartridge as the center.

[0011] Further, two limiting rods are arranged on each limiting part.

[0012] Further, the contact surface between the fitting part and the fitting groove is bonded with a rubber pad, and the surface of the adjusting block close to the adjusting part is provided with a plurality of universal balls.

[0013] The utility model has the following beneficial effects:

[0014] 1. The fixing assembly is arranged, the fitting part is inserted into the fitting groove, the arc surface of the fitting part extrudes the limiting part, the elastic sheet is elastically deformed, the elastic sheet is reset after the fitting part is completely inserted, the limiting part is clamped to the outer side of the fitting part, the radial fixing of the filter core is realized, and the problem that the filter core and the filter cylinder are mostly connected through bolts in the prior art and are relatively cumbersome to install and disassemble is solved.

[0015] 2. The fixing assembly is arranged, the rotating disc at the top end of the inner groove is rotated when the filter core needs to be replaced, the adjusting block at the bottom end of the rotating disc is synchronously rotated, the adjusting block extrudes the adjusting part on the limiting part when the adjusting block is rotated, the limiting part is moved away from the fitting part, the limiting part is completely separated from the fitting part, the filter core can be pulled out upward to complete disassembly, the rotating disc is loosened after disassembly, the elastic sheet is reset, the limiting part and the adjusting part are returned to the initial position, the next installation is facilitated, and the problem that four fixing parts are arranged in the prior art and each fixing part is separately adjusted and disassembled is relatively cumbersome is solved. DRAWINGS

[0016] Figure 1 It is a structural schematic view of the overall appearance of the utility model;

[0017] Figure 2 It is a structural schematic view of the filter cylinder section;

[0018] Figure 3 It is a structural schematic view of another view of the filter cylinder section;

[0019] Figure 4 It is a structural schematic view of the fitting part and the limiting part of the utility model;

[0020] Figure 5It is the structure schematic view of fixed assembly of the utility model;

[0021] Figure 6 For Figure 5 The structure enlarged schematic view of A in the middle.

[0022] Reference signs:

[0023] 1, main body assembly; 11, filter cartridge; 12, filter core; 13, output pipe; 14, oil pump plug; 15, oil pipe;

[0024] 2, fixed assembly; 21, fitting groove; 22, fitting piece; 23, inner groove; 24, elastic sheet; 25, limiting piece; 26, limiting rod; 27, rotating disc; 28, adjusting block; 29, adjusting piece. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model.

[0026] Please refer to Figures 1-5 The utility model discloses a fuel filter assembly, including main body assembly 1 and fixed assembly 2, main body assembly 1 includes filter cartridge 11 and filter core 12, and filter core 12 is fixedly connected with filter cartridge 11 through fixed assembly 2, and the bottom end of filter cartridge 11 is connected with output pipe 13, and the top end of filter core 12 is also provided with oil pump plug 14 and oil pipe 15.

[0027] Main body assembly 1 is the main component of fuel filter assembly, and fixed assembly 2 is mainly used for the quick installation or dismounting of filter cartridge 11 and filter cartridge 11, so as to save the cumbersome bolt fixing process.

[0028] Fixed assembly 2 includes fitting groove 21 arranged at the top end of filter cartridge 11, and the top end of the outer circumferential side of filter core 12 is also fixed with fitting piece 22 matched with fitting groove 21, and the top end of filter cartridge 11 is also provided with inner groove 23, and elastic sheet 24 is fixed on the circumferential wall of inner groove 23, one end of elastic sheet 24 away from the wall of inner groove 23 is fixed with limiting piece 25 matched with fitting piece 22, limiting rod 26 is horizontally fixed on one side of limiting piece 25, and limiting rod 26 is movably connected to the circumferential wall of inner groove 23.

[0029] Fitting groove 21 is matched with fitting piece 22, so that fitting piece 22 can be inserted into fitting groove 21, and then elastic sheet 24 can push limiting piece 25 to jam fitting piece 22, so that fitting piece 22 is stably fixed, thereby realizing the fixed connection of filter cartridge 11 and filter core 12.

[0030] Further, the fixing assembly 2 further comprises a rotating disc 27 rotatably connected to the top end of the inner groove 23, and the bottom end of the rotating disc 27 is further fixed with an adjusting block 28, and one side of the limiting piece 25 is further fixed with an adjusting piece 29 matched with the adjusting block 28, and the adjusting block 28 and the adjusting piece 29 mainly realize quick disassembly between the filter element 12 and the filter cartridge 11, and the adjusting block 28 is rotated by rotating the rotating disc 27, the adjusting piece 29 arranged in an inclined manner is pushed to move, thereby driving the limiting piece 25 to move, and finally the limiting piece 25 is separated from the embedded part 22, at this time, the filter cartridge 11 can be removed, which is convenient and fast.

[0031] Further, the contact surface between the embedded part 22 and the limiting piece 25 is an arc surface, so that when the embedded part 22 is installed, it can be directly pressed to realize quick installation without rotation, which greatly improves the convenience of installation.

[0032] Further, the elastic sheet 24, the limiting piece 25, the limiting rod 26, the adjusting block 28 and the adjusting piece 29 located on the same side form a group and are arranged in a ring array with the center axis of the filter cartridge 11 as the center, and four groups are arranged, which can stably connect the filter cartridge 11 and the filter element 12 and improve the stability of the fixing,

[0033] Further, two limiting rods 26 are arranged on each limiting piece 25, and the limiting rods 26 are used for horizontal movement of the limiting piece 25, and only one limiting rod 26 will cause the limiting piece 25 to rotate along the limiting rod 26, and only two limiting rods 26 can limit the movement direction of the limiting piece 25.

[0034] Further, the contact surface between the embedded part 22 and the embedded groove 21 is bonded with a rubber pad, and the side of the adjusting block 28 close to the adjusting piece 29 is provided with a plurality of universal balls, the rubber pad can make the filter cartridge 11 and the filter element 12 more closely connected, and increase the air tightness, and the universal balls can reduce the friction between the adjusting piece 29 and the adjusting block 28, so that the adjusting piece 29 and the adjusting block 28 can be more smoothly rotated and adjusted.

[0035] The specific working principle of the utility model is: when installing the filter element 12, the fitting part 22 of the outer circumferential side top end of the filter element 12 and the fitting groove 21 of the top end of the filter cylinder 11 are adaptive structures, the fitting part 22 is inserted to the fitting groove 21 during installation, realizing the preliminary axial positioning of the filter element 12 and the filter cylinder 11, the rubber pad of the contact surface of the fitting part 22 and the fitting groove 21 is extruded and contacted, enhancing the sealing property, preventing fuel leakage, the inner groove 23 of the top end of the rear filter cylinder 11 is fixed with the spring sheet 24 on the circumferential wall, one end of the spring sheet 24 away from the circumferential wall of the inner groove 23 is connected with the limiting part 25, when the fitting part 22 is inserted into the fitting groove 21, the arc surface (the contact surface with the limiting part 25 is an arc surface) of the fitting part 22 will extrude the limiting part 25, making the spring sheet 24 elastically deformed; after the fitting part 22 is completely inserted, the spring sheet 24 resets, driving the limiting part 25 to clamp the outside of the fitting part 22, realizing the radial fixation of the filter element 12, the limiting rod 26 fixed horizontally on one side of the limiting part 25 is movably connected to the circumferential wall of the inner groove 23, and two limiting rods 26 are arranged on each limiting part 25, which can play a guiding role when the limiting part 25 is forced to move, avoiding the deviation of the limiting part 25, enhancing the fixation stability, meanwhile, the four groups of fixing assemblies 2 (each group includes the spring sheet 24, the limiting part 25, the limiting rod 26, the adjusting block 28 and the adjusting part 29) arranged in a ring array around the center axis of the filter cylinder 11 are evenly forced from all around, further ensuring the coaxiality and the fixation firmness of the filter element 12 and the filter cylinder 11.

[0036] When the filter element 12 needs to be replaced, the turntable 27 at the top end of the inner groove 23 is rotated, the adjusting block 28 at the bottom end of the turntable 27 is synchronously rotated, one side of the adjusting block 28 close to the adjusting part 29 is provided with a plurality of universal balls, which can reduce the friction with the adjusting part 29 during rotation, making the operation more labor-saving, the adjusting block 28 rotates and extrudes the adjusting part 29 on the limiting part 25, driving the limiting part 25 to move away from the fitting part 22 (at this time, the spring sheet 24 is compressed), until the limiting part 25 is completely separated from the fitting part 22, the filter element 12 can be pulled out upward to complete the disassembly, after the disassembly is completed, the turntable 27 is loosened, the spring sheet 24 resets, driving the limiting part 25 and the adjusting part 29 to return to the initial position, facilitating the next installation.

[0037] The above is only the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement and improvement of the technical solutions recorded in the foregoing embodiments, and the modification, equivalent replacement and improvement all belong to the protection of the utility model.

Claims

1. A fuel filter assembly comprising a main body assembly (1) and a securing assembly (2), characterised in that: The main body assembly (1) comprises a filter cartridge (11) and a filter core (12), the filter core (12) is fixedly connected with the filter cartridge (11) through the fixing assembly (2), the bottom end of the filter cartridge (11) is connected with an output pipe (13), and the top end of the filter core (12) is provided with an oil pump plug (14) and an oil pipe (15); The fixing assembly (2) comprises a matching groove (21) formed in the top end of the filter cartridge (11), the outer circumferential side of the top end of the filter core (12) is further fixed with a matching part (22) matched with the matching groove (21), the top end of the filter cartridge (11) is further provided with an inner groove (23), the outer circumferential wall of the inner groove (23) is fixed with an elastic sheet (24), one end of the elastic sheet (24) away from the outer circumferential wall of the inner groove (23) is fixed with a limiting part (25) matched with the matching part (22), and one side of the limiting part (25) is fixed with a limiting rod (26) horizontally.

2. A fuel filter assembly according to claim 1, wherein: The fixing assembly (2) further comprises a rotating disc (27) rotatably connected to the top end of the inner groove (23), and the bottom end of the rotating disc (27) is further fixed with an adjusting block (28), and one side of the limiting part (25) is further fixed with an adjusting part (29) matched with the adjusting block (28).

3. A fuel filter assembly according to claim 2, wherein: The contact surface between the matching part (22) and the limiting part (25) is an arc surface.

4. A fuel filter assembly according to claim 3, wherein: The elastic sheet (24), the limiting part (25), the limiting rod (26), the adjusting block (28) and the adjusting part (29) located on the same side form a group and are arranged in a ring array around the central axis of the filter cartridge (11).

5. A fuel filter assembly according to claim 4, wherein: Two limiting rods (26) are arranged on each limiting part (25).

6. A fuel filter assembly according to claim 5, wherein: The contact surface between the matching part (22) and the matching groove (21) is bonded with a rubber pad, and the side of the adjusting block (28) close to the adjusting part (29) is provided with a plurality of universal balls.

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