Self-locking filter element pressing mechanism

Abstract

This invention discloses a self-locking filter element pressing mechanism, belonging to the field of automotive internal combustion engine technology. It includes a base, three or more rotating groups, two connecting rods, several base shafts, several connecting rod shafts, several self-locking mechanisms, and several pressing wheels. The three or more rotating groups are arranged at intervals along the length of the base. Each rotating group includes two L-shaped columns; the lower stepped platform of each L-shaped column is hinged to the base via a base shaft, and the higher stepped platform is hinged to a connecting rod shaft. Two connecting rods are located at both ends of the connecting rod shaft. The pressing wheels are sleeved on the connecting rod shaft. The self-locking mechanism includes a lever plate and a push rod assembly. The lever plate is hinged to the connecting rod shaft and the base shaft, and the connecting rod shaft and the base shaft cooperate with the rotating group at the outermost end. One end of the push rod assembly is hinged to the lever plate, and the other end is hinged to the base. This invention avoids height superposition in the pressing direction and achieves self-locking through the self-locking mechanism, resulting in a simple pressing mechanism structure, small footprint, and stable pressing state.

Description

Technical Field

[0001] This invention belongs to the field of automotive internal combustion engine technology, specifically relating to a self-locking filter element pressing mechanism. Background Technology

[0002] The air filter element of the engine intake system is pressed down using various filter element pressing mechanisms with different structures. Commonly used filter element pressing mechanisms include a pressing shaft and a handle. The pressing shaft presses the air filter element against the air filter housing (hereinafter referred to as the housing), and the handle is used to change the height of the pressing shaft in the pressing direction, thereby achieving the pressing of the air filter.

[0003] However, existing filter cartridge clamping mechanisms still have the following problems:

[0004] (1) Large space required

[0005] When the filter cartridge compressor is in the unfolded state, there is a height overlap in the compression direction. Due to the limited internal space of the housing, the height in the compression direction restricts the size of the filter cartridge. To ensure that the filter cartridge can be properly installed and function within the housing, the height of the filter cartridge needs to be reduced.

[0006] (2) Cannot self-lock

[0007] To maintain a stable compressed state, an additional limiting device is needed to prevent the filter element from falling off. However, this limiting device further narrows the already limited internal space of the housing, making the air filter structure more complex. Furthermore, because the compression mechanism is not self-locking, multiple people are required to install the filter element (e.g., one person holds the handle to keep it open while another installs the filter element), causing inconvenience to the operators. After releasing the air filter compression, the handle automatically returns to its folded state, and reopening the folded handle is time-consuming and laborious, further reducing installation efficiency.

[0008] The aforementioned problems make the existing filter cartridge pressing mechanism inconvenient to use and urgently need improvement. Summary of the Invention

[0009] In view of this, the present invention provides a self-locking filter cartridge pressing mechanism, which does not produce height superposition in the pressing direction and achieves self-locking through a self-locking mechanism, making the pressing mechanism simple in structure, occupying little space, and ensuring the stability of the pressing state.

[0010] This invention is achieved through the following technical solution:

[0011] A self-locking filter cartridge pressing mechanism includes: a base, three or more rotating groups, two connecting rods, several base shafts, several connecting rod shafts, several self-locking mechanisms, and several pressing wheels;

[0012] Three or more rotating groups are arranged at intervals along the length of the base;

[0013] The rotating assembly includes: two L-shaped columns arranged with their backs facing each other; the front of the L-shaped columns is stepped; in each rotating assembly, the lower stepped surface platform of the two L-shaped columns is hinged to the base through the base shaft, and the higher stepped surface platform is hinged to the connecting rod shaft.

[0014] The two connecting rods are located at both ends of the connecting rod shaft and protrude from both sides of the base, respectively;

[0015] The rotating assembly at the very end is used to control the movement of the connecting rod, and the pressure wheel is fitted onto each connecting rod shaft that is connected to the other rotating assemblies;

[0016] Several of the self-locking mechanisms are arranged at intervals along the width direction of the base;

[0017] The self-locking mechanism includes: a lever plate and a push rod assembly;

[0018] The lever plate is hinged to the connecting rod shaft and the base shaft, and the connecting rod shaft and the base shaft are engaged with the rotating assembly at the outermost end; one end of the push rod assembly is hinged to the lever plate, and the other end is hinged to the base.

[0019] When the clamping mechanism is in the deployed state, the lever plate is pushed against the base by the push rod assembly, forming a self-locking mechanism;

[0020] When the clamping mechanism is in the clamping state, the lever plate is pushed against the filter element by the push rod assembly, forming a self-locking mechanism.

[0021] Furthermore, it also includes groups of three or more columns;

[0022] Three or more of the aforementioned column groups are arranged at intervals along the length of the base plate;

[0023] Each column group consists of two columns; the two columns in the same column group are arranged opposite each other along the width of the base plate.

[0024] The base shaft corresponds one-to-one with the column assembly, and the two ends of the base shaft are respectively installed on the two columns of the corresponding column assembly.

[0025] Furthermore, it also includes: handles;

[0026] The handle is fixedly connected to two L-shaped posts at the far end of the rotating assembly; the length direction of the handle is parallel to the length direction of the L-shaped posts.

[0027] The handle is used to rotate the rotating assembly located at the far end.

[0028] Furthermore, the lever plate is provided with three through holes B, which are respectively: base shaft hole, connecting rod shaft hole and self-locking hole;

[0029] The lever plate is hinged to the base shaft connecting the outermost rotating assembly through the base shaft hole, and is hinged to the connecting rod shaft connecting the outermost rotating assembly through the connecting rod shaft hole;

[0030] The push rod assembly includes: a push rod, a support guide tube, and a thrust spring;

[0031] One end of the push rod is hinged to the self-locking hole of the lever plate;

[0032] One end of the support conduit is open and the other end is closed; the open end of the support conduit is coaxially sleeved on the end of the push rod that is not hinged to the lever plate, and the other end is hinged to the base plate.

[0033] The thrust spring is coaxially sleeved outside the push rod; one end of the thrust spring abuts against the end of the push rod that is hinged to the self-locking hole, and the other end of the thrust spring abuts against the open end face of the support guide tube.

[0034] The push rod assembly applies a thrust to the lever plate via a thrust spring.

[0035] Furthermore, let the center points of the three through holes B of the base shaft hole, connecting rod shaft hole and self-locking hole be O, B and A respectively;

[0036] The center points O, B, and A form a triangle, where ∠AOB is not less than 90°.

[0037] Furthermore, the lever plate is triangular;

[0038] The angle between the side containing the base shaft hole and the connecting rod shaft hole on the lever plate and the side containing the base shaft hole and the self-locking hole is no greater than 90°.

[0039] Furthermore, the end of the push rod that is hinged to the self-locking hole of the lever plate is a push rod U-shaped groove;

[0040] The two sidewalls of the U-shaped groove opening end of the push rod are hinged to the self-locking hole.

[0041] Furthermore, this also includes: exhaustion point columns;

[0042] The exhaust point post is set on the base plate; when the clamping mechanism is in the unfolded state, the L-shaped post abuts against the exhaust point post, so that the L-shaped post and the connecting rod are not collinear.

[0043] Furthermore, the outer diameter of both ends of the clamping wheel is larger than the outer diameter of the wheel body;

[0044] An adjusting shim is coaxially fitted onto the outside of the clamping wheel.

[0045] Furthermore, the bottom plate of the substrate is provided with a plurality of recessed grooves;

[0046] Each of the submerged grooves corresponds to a pressure wheel;

[0047] When the clamping mechanism is in the deployed state, the clamping wheel is submerged into the corresponding recess.

[0048] Beneficial effects:

[0049] (1) A self-locking filter element pressing mechanism of the present invention comprises two L-shaped columns with their stepped surfaces hinged to a connecting rod shaft, and two connecting rods located at both ends of the connecting rod shaft and protruding from both sides of the base. When the pressing mechanism is unfolded, the two connecting rods can protrude from both sides of the base, thereby achieving non-overlapping of the pressing mechanism in the height direction, reducing the space occupied by the pressing mechanism in the unfolded state, and reducing the size restriction on the height of the air filter element; the pressing mechanism includes several self-locking mechanisms, which can realize self-locking of the pressing mechanism in the unfolded state and the pressing state. When the pressing mechanism is in the pressing state and the unfolded state, the push rod assembly pushes... The movable lever plate abuts against the base plate to achieve self-locking, allowing a single person to complete the filter installation without the need for auxiliary personnel (i.e., no one is required to maintain the unfolded state), simplifying the operation process and improving operational efficiency. The absence of additional limiting devices during the pressing operation simplifies the structure of the pressing mechanism. Furthermore, the self-locking mechanism prevents the filter from automatically returning to its folded state after the pressing is released, further improving installation efficiency. In addition, the pressing mechanism includes three or more rotating groups; the movement of the connecting rod is controlled by the outermost rotating group, thereby synchronously controlling the remaining rotating groups to press the air filter, making the pressing mechanism easy to adjust.

[0050] (2) A self-locking filter element pressing mechanism of the present invention has a handle fixedly connected to two L-shaped columns of the rotating group at the far end, which facilitates the rotation of the rotating group at the far end to realize the pressing operation. Since the handle is separate from the rotating group used for pressing, there is no need to change or replace the handle, which can be applied to air filter elements of different shapes, thereby increasing the versatility of the pressing mechanism.

[0051] (3) In a self-locking filter element pressing mechanism of the present invention, the open end of the support guide tube is coaxially sleeved on the end of the push rod that is not hinged to the lever plate, the thrust spring is coaxially sleeved on the outside of the push rod, and the push rod assembly applies a thrust to the lever plate through the thrust spring, so that the thrust applied by the push rod assembly to the lever plate can be maintained, thereby achieving self-locking while ensuring self-locking stability.

[0052] (4) In the self-locking filter element pressing mechanism of the present invention, ∠AOB is not less than 90°, so that there is a point of maximum thrust during the process of the self-locking mechanism changing from the pressing state to the unfolding state (or the opposite state), thereby avoiding unlocking in the pressing state and further ensuring the reliability of self-locking.

[0053] (5) In the present invention, a self-locking filter element pressing mechanism is provided, wherein the lever plate is triangular, and the angle between the side of the lever plate containing the base shaft hole and the connecting rod shaft hole and the side containing the base shaft hole and the self-locking hole is not greater than 90°, thereby increasing the rotation angle of the lever plate and improving the reliability of self-locking.

[0054] (6) In a self-locking filter cartridge pressing mechanism of the present invention, the two side walls of the opening end of the push rod U-shaped groove are hinged to the self-locking hole, so that the lever plate can rotate freely.

[0055] (7) In the present invention, a self-locking filter element pressing mechanism has a dead point column set on the base plate, so that the L-shaped column of the pressing mechanism is not collinear with the connecting rod in the unfolded state, thereby eliminating the jamming point and making the pressing operation smoother.

[0056] (8) A self-locking filter element pressing mechanism of the present invention has an adjusting pad coaxially sleeved on the outside of the pressing wheel, which can press a filter element with length error.

[0057] (9) A self-locking filter cartridge pressing mechanism of the present invention has a plurality of recessed grooves on the bottom plate of the substrate. When the pressing mechanism is in the unfolded state, the pressing wheel is recessed into the corresponding recessed groove, thereby further reducing the height of the pressing mechanism in the unfolded state. Attached Figure Description

[0058] Figure 1 This is a schematic diagram of the clamping mechanism assembly of the present invention in the clamping state;

[0059] Figure 2 This is a schematic diagram of the clamping mechanism assembly of the present invention in its unfolded state;

[0060] Figure 3 This is a schematic diagram of the base structure of the present invention;

[0061] Figure 4 This is a schematic diagram of the structure of the base plate of the present invention;

[0062] Figure 5 This is a schematic diagram of the structure of the bracket of the present invention;

[0063] Figure 6 This is a schematic diagram of the exhaustion point column of the present invention;

[0064] Figure 7 This is a schematic diagram of the structure of the column of the present invention;

[0065] Figure 8 This is a schematic diagram of the base shaft of the present invention;

[0066] Figure 9 This is a schematic diagram A of the L-shaped column of the present invention;

[0067] Figure 10This is a schematic diagram B of the L-shaped column of the present invention;

[0068] Figure 11 This is a schematic diagram of the connecting rod shaft of the present invention;

[0069] Figure 12 This is a schematic diagram of the linkage structure of the present invention;

[0070] Figure 13 This is a schematic diagram of the assembly of the present invention;

[0071] Figure 14 This is a schematic diagram of the structure of the clamping wheel of the present invention;

[0072] Figure 15 This is a schematic diagram of the push rod assembly of the present invention (in the compressed state);

[0073] Figure 16 This is a schematic diagram of the push rod assembly of the present invention (in its unfolded state);

[0074] Figure 17 This is a schematic diagram of the self-locking bolt of the present invention;

[0075] Figure 18 This is a schematic diagram of the lever plate of the present invention;

[0076] Figure 19 This is a schematic diagram showing the thrust direction of the lever plate of the present invention;

[0077] Figure 20 This is a schematic diagram of the push rod structure of the present invention;

[0078] Figure 21 This is a schematic diagram of the supporting conduit of the present invention;

[0079] Figure 22 This is a schematic diagram A showing the 180-degree overlapping of the present invention;

[0080] Figure 23 This is a schematic diagram (B) showing the 180-degree overlapping of the present invention;

[0081] Figure 24 This is a schematic diagram of the cotter pin of the present invention;

[0082] Among them, 1-base, 11-base plate, 111-mounting hole, 112-submerged groove, 12-exhaust point column, 13-bracket, 2-column, 3-self-locking mechanism, 31-lever plate, 311-base shaft hole, 312-connecting rod shaft hole, 313-self-locking hole, 32-push rod assembly, 321-push rod, 3211-push rod U-shaped groove, 322-support guide tube, 3221-guide tube U-shaped groove, 323-thrust spring, 33-self-locking bolt, 4-base shaft, 5-connecting rod shaft, 51-large step, 52-small step, 53-limiting hole, 6-L-shaped column, 61-low step surface platform, 62-high step surface platform, 7-connecting rod, 8-pressure wheel, 9-cotter pin, 10-handle. Detailed Implementation

[0083] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0084] Example 1:

[0085] This embodiment provides a self-locking filter element pressing mechanism. The pressing mechanism is installed on the housing of the air filter and is used to press the air filter element into the air outlet inside the air filter housing (the air outlet is located at...). Figure 1 (on the right side); such as Figure 1 and Figure 2 As shown, the clamping mechanism includes: a base 1, a handle 10, two connecting rods 7, one or more self-locking mechanisms 3, three or more column groups, several rotating groups, several base shafts 4, several connecting rod shafts 5, several clamping wheels 8, and several cotter pins 9.

[0086] like Figure 3 As shown, the base 1 includes: a base plate 11 and a bracket 13;

[0087] like Figure 3 and Figure 4 As shown, the base plate 11 is provided with a plurality of mounting holes 111 and a plurality of recessed grooves 112; the recessed grooves 112 correspond one-to-one with the pressing wheels 8. When the pressing mechanism is in the unfolded state, the pressing wheels 8 are recessed into the corresponding recessed grooves 112, thereby reducing the height of the pressing mechanism in the pressing direction; as an example, the mounting holes 111 are preferably three, which makes the installation of the base 1 convenient.

[0088] Several brackets 13 are mounted on the base plate 11; such as Figure 5 As shown, the bracket 13 has a U-shaped structure. The open end of the U-shape is connected to the housing of the air filter, and the closed end of the U-shape is connected to the mounting hole 111 of the base plate 11. When the surface of the air filter housing on which the pressing mechanism is installed is uneven, the bracket 13 can be adjusted according to the height of different positions on the housing surface so that the mounting surface of the pressing mechanism can be kept horizontal, thereby solving the problem of height difference caused by uneven surface and improving the pressing effect on the filter element.

[0089] Three or more column groups are arranged at intervals along the length of the base plate 11; each column group includes two columns 2; as an example, the structure of each column 2 is as follows: Figure 7 As shown; two columns 2 of the same column group are arranged opposite to each other along the width direction of the base plate 11; in this embodiment, three column groups are preferred, and each column 2 is fixed to the base plate 11 by welding;

[0090] Each column assembly is equipped with a base shaft 4; both ends of the base shaft 4 are respectively connected to two columns 2 of the corresponding column assembly, and the axis of the base shaft 4 is parallel to the width direction of the base plate 11; each base shaft 4 is provided with two pin holes a, which are located on the shaft body of the base shaft 4 between the two columns 2 and are arranged symmetrically; each pin hole a is provided with a cotter pin 9; as an example, the structure of the base shaft 4 is as follows Figure 8 As shown;

[0091] The rotating groups are rotatably connected to the base shaft 4 in a one-to-one correspondence; each rotating group includes: two L-shaped columns 6;

[0092] like Figure 1 and Figure 2 As shown, two L-shaped columns 6 in the same rotating assembly are rotatably connected to the base shaft 4; specifically, the two L-shaped columns 6 are arranged with their backs facing each other at both ends of the base shaft 4 (the backs of the L-shaped columns 6 are...). Figure 9 and Figure 10 (right side of the middle); such as Figure 9 and Figure 10 As shown, the front of each L-shaped column 6 is stepped, consisting of a low-step platform 61 and a high-step platform 62; the low-step platforms 61 of the two L-shaped columns 6 are connected to the base shaft 4 hole shaft, and the cotter pin 9 set on the pin hole a forms an axial limit on the section where the low-step platform 61 of the L-shaped column 6 is located.

[0093] The stepped platforms 62 of the two L-shaped columns 6 in the same rotating group protrude from the column 2 connected to them, and a connecting rod shaft 5 is hinged to the stepped platforms 62 of the two L-shaped columns 6 (e.g., Figure 22 and 23 (As shown); the axis of the connecting rod shaft 5 is parallel to the width direction of the base plate 11; as shown Figure 11 As shown, as an example, both ends of each connecting rod shaft 5 have a variable diameter structure, that is, the outer diameter of both ends of the connecting rod shaft 5 is smaller than the outer diameter of the connecting rod shaft body, and a stepped surface is formed at the connection between both ends of the connecting rod shaft 5 and the shaft body; each end of the connecting rod shaft 5 is respectively machined with a connecting rod shaft 5 pin hole b, and each pin hole b is provided with a cotter pin 9;

[0094] The connecting rod 7 is used to achieve synchronous rotation of each L-shaped column 6; such as Figure 1 and Figure 2 As shown, two connecting rods 7 are respectively mounted on both ends of several connecting rod shafts 5, and the two connecting rods 7 protrude from both sides of each column group; the cotter pins 9 set in the pin holes b provide axial restraint for the connecting rods 7; the variable diameter structure on the connecting rod shafts 5 can prevent the columns 2 on the base plate 11 from interfering with the movement of the L-shaped columns 6 and the connecting rods 7; as an example, the structure of each connecting rod 7 is as follows Figure 12 As shown;

[0095] like Figure 1 and Figure 2 As shown, the rotating assembly located at the far end of the base plate 11 is used to control the movement of the connecting rod 7, thereby achieving synchronous lifting and lowering movements of the remaining rotating assemblies; let this rotating assembly be rotating assembly A; the handle 10 is mounted on rotating assembly A; specifically, the handle 10 is fixedly connected to the two L-shaped columns 6 of rotating assembly A by welding; as shown Figure 13 As shown, the length direction of the handle 10 is parallel to the length direction of the L-shaped column 6; the handle 10 is used to rotate the L-shaped column 6, so that the remaining connecting rod shaft 5 can move in the pressing direction (i.e., perpendicular to the surface of the base plate 11), thereby realizing the pressing or releasing operation of the pressing mechanism; the handle 10 and the two L-shaped columns 6 connected to the handle 10 form a handle assembly;

[0096] The clamping rollers 8, excluding the rotating assembly, are used to press the filter element against the vent inside the filter housing; such as Figure 1 , Figure 2 , Figure 22 and Figure 23 As shown, the clamping rollers 8 are fitted one-to-one on all the connecting rod shafts 5 that are not hinged to the rotating assembly A; as Figure 14 As shown, the outer diameter of each of the two ends of the pressing wheel 8 is larger than the outer diameter of the wheel body, that is, the outer wall of the pressing wheel 8 has a structure that is high at both ends and low in the middle. An adjusting pad is coaxially fitted on the low middle structure, so that the pressing wheel 8 is conducive to pressing the filter element with length error; as an example, the adjusting pad is made of metal; the pressing wheel 8 corresponds one-to-one with the submersion groove 112. When the pressing mechanism is in the unfolded state, the pressing wheel 8 can be submerged into the submersion groove 112, further reducing the superposition of the pressing height of the pressing mechanism;

[0097] Several self-locking mechanisms 3 are arranged at intervals along the width direction of the base plate 11; specifically, as follows: Figure 1 , Figures 15 to 16 , Figures 22 to 23 As shown, the self-locking mechanism 3 includes: a lever plate 31, a push rod assembly 32, and a self-locking bolt 33;

[0098] like Figure 22 and Figure 23As shown, the self-locking bolt 33 is fixed to the surface of the base plate 11 and is located between the rotating group A and the adjacent rotating group A; Figure 17 As shown, the self-locking bolt 33 is provided with a through hole A;

[0099] like Figure 18 As shown, the lever plate 31 has three through holes B, which are: a base shaft hole 311, a connecting rod shaft hole 312, and a self-locking hole 313. The centers of the three through holes B are O, B, and A, respectively. The centers O, B, and A form a triangle, where ∠AOB is not less than 90°. The lever plate 31 is hinged to the base shaft 4 connected to the rotating assembly A through the base shaft hole 311, and to the connecting rod shaft 5 connected to the rotating assembly A through the connecting rod shaft hole 312. As an example, the lever plate 31 is triangular, and the angle between the vertex of the lever plate 31 and the vertex corresponding to ∠AOB is not greater than 90°, which can further improve the stability of the self-locking.

[0100] The two ends of the push rod assembly 32 are respectively hinged to the self-locking hole 313 and the through hole A; specifically, the push rod assembly 32 includes: a push rod 321, a support guide tube 322 and a thrust spring 323;

[0101] like Figure 20 As shown, the push rod 321 is integrally formed by the push rod U-shaped groove 3211 and the rod body; one end of the rod body is set at the geometric center of the closed end of the push rod U-shaped groove 3211; the two side walls of the open end of the push rod U-shaped groove 3211 are hinged to the self-locking hole 313 by the cotter pin 9.

[0102] like Figure 21 As shown, the supporting conduit 322 is integrally formed from the conduit body and the conduit U-shaped groove 3221; the conduit body is open at one end and closed at the other end; the open end of the conduit body is slidably connected to one end of the rod body that is not connected to the push rod U-shaped groove 3211, and the other end of the conduit body is connected to the center of the closed end of the conduit U-shaped groove 3221; the two side walls of the open end of the conduit U-shaped groove 3221 are hinged to the through hole A of the self-locking bolt 33 through the cotter pin 9; the open end of the conduit body is opposite to the open end of the conduit U-shaped groove 3221.

[0103] The thrust spring 323 is coaxially sleeved on the outside of the push rod 321; one end of the thrust spring 323 abuts against the closed end of the push rod U-shaped groove 3211, and the other end of the thrust spring 323 abuts against the open end face of the guide tube body.

[0104] The push rod assembly 32 always applies a pushing force to the center point A of the lever plate 31, and the direction of the pushing force is as follows: Figure 19 As shown, the direction changes between the two arrows as the handle 10 rotates. Figure 19In the diagram, the arrow on the left represents the direction of the thrust of the thrust spring 323 when the clamping mechanism is in the clamped state, and the arrow on the right represents the direction of the thrust of the thrust spring 323 when the clamping mechanism is in the unfolded state.

[0105] The structure of the cotter pin 9 is as follows: Figure 24 As shown;

[0106] As an example, the filter cartridge clamping mechanism further includes: an exhaustion point column 12;

[0107] The exhaust point post 12 is used to prevent the L-shaped post 6 from being collinear with the connecting rod 7; the exhaust point post 12 is located at the overlapping part of the L-shaped post 6 and the base plate 11 when the L-shaped post 6 is rotated to be parallel with the base plate 11; the exhaust point post 12 is arranged along the width direction of the base plate 11; the structure of the exhaust point post 12 is as follows Figure 6 As shown; as an example, the distance between the exhaustion point column 12 and the column 2 is 3-5mm; as an example, the exhaustion point column 12 is welded to the base plate 11 by welding.

[0108] Working principle:

[0109] The clamping mechanism includes a clamping state and an unfolded state, which are achieved by rotating the handle 10.

[0110] When the clamping mechanism is in the clamping state, such as Figure 1 As shown, the L-shaped column 6 is perpendicular to the base plate 11, and the base plate 11, several L-shaped columns 6, and connecting rods 7 together form a cuboid structure. When the clamping state is released, the handle 10 drives the two L-shaped columns 6 fixed to it to rotate around the axis of the base shaft 4. The connecting rod shaft 5 on the rotating group A rotates around the axis of the base shaft 4 along with the rotation of the L-shaped column 6. At this time, the two connecting rods 7 move with the connecting rod shaft 5, and drive the connecting rod shafts 5 in the other rotating groups other than rotating group A to rotate synchronously around the corresponding axis of the base shaft 4. In the above process, the rectangular side formed by the base plate 11, several L-shaped columns 6, and connecting rods 7 is transformed into a parallelogram structure. The connecting rods 7 continuously approach the base plate 11, and when the included angle between the handle 10 and the base plate 11 approaches 180°, the clamping mechanism is in the unfolded state. When the clamping mechanism is in the unfolded state, as shown... Figure 2 As shown, the L-shaped column 6 is nearly parallel to the base plate 11, and the two connecting rods 7 are located on both sides of the base 1, so that the various components of the pressing mechanism do not have overlapping heights in the pressing direction, thus minimizing the height of the pressing mechanism.

[0111] When the clamping state is released, the rectangular structure formed by the base plate 11, several L-shaped columns 6, and connecting rod 7 gradually deforms and becomes collinear (i.e., the L-shaped columns 6 and connecting rod 7 form a straight line). At this time, the L-shaped columns 6 cannot generate a torque that can rotate the L-shaped columns 6 and lift them under the pull of the handle 10, so that the L-shaped columns 6 cannot change from a state parallel to the base plate 11 to a state perpendicular to the base plate 11. After setting the exhaustion point column 12, the L-shaped columns 6 and connecting rod 7 are never collinear (i.e., an angle is formed between the L-shaped columns 6 and connecting rod 7), thereby avoiding the L-shaped columns 6 and connecting rod 7 from being collinear, thus eliminating the jamming point of the clamping mechanism.

[0112] The self-locking mechanism 3 employs the lever principle; in the triangular lever plate 31, the center point O is the fulcrum, the center point A is the point of application, and "OA" serves as the lever; under the elastic force of the thrust spring 323, the lever "OA" rotates around the center point O, and the lever "OB" rotates with the lever "OA"; during the rotation, the thrust spring 323 is always in a compressed state, that is, the thrust spring always applies torque to the lever "OA"; when the push rod 321 is collinear with the lever "OA", the compression of the thrust spring 323 is at its maximum, and the generated torque is at its maximum; therefore, the lever plate 31 is... Figure 15 The unfolded state in the middle becomes Figure 16 When the lever plate 31 is in the compressed state, sufficient external force needs to be applied to overcome the maximum torque to achieve unlocking in the compressed state; that is, without applying external force, the self-locking mechanism 3 does not unlock, thus achieving self-locking in the compressed state; when the lever plate 31 is disengaged from the collinear state of the push rod 321 and the lever "OA": when the lever plate 31 continues to rotate until the lever plate 31 touches the bottom plate 11, self-locking in the unfolded state is achieved; when the lever plate 31 continues to rotate until the lever plate 31 touches the filter element to be compressed, self-locking in the compressed state is achieved; in triangle OAB, ∠AOB is not less than 90° so that the lever plate 31 is... Figure 15 The state in the middle becomes Figure 16 In the state of [the circuit], push rod 321 is collinear with lever "OA".

[0113] In this embodiment, the assembly sequence of the clamping mechanism is as follows:

[0114] S01: Assembly Base 1

[0115] Weld the column 2, self-locking bolt 33, exhaust point column 12 and bracket 13 onto the base plate 11;

[0116] S02: Assemble the assembly

[0117] Weld the two L-shaped posts 6 to the handle 10;

[0118] S03: Assemble the self-locking mechanism 3

[0119] S031: The self-locking hole 313 of the lever plate 31 is hinged to the push rod U-shaped groove 3211, and locked and limited by the cotter pin 9;

[0120] S032: The thrust spring 323 is fitted onto the push rod 321;

[0121] S033: The U-shaped groove 3221 of the supporting conduit 322 is hinged to the through hole A of the self-locking bolt 33, and locked and limited by the cotter pin 9;

[0122] S034: The support tube 322 is fitted onto the push rod 321;

[0123] S04: Assemble the rotating assembly

[0124] S041: Base shaft 4 for mounting rotating assembly A

[0125] One end of the base shaft 4 is sequentially passed through one of the columns 2 in the corresponding column group, the low-step platform 61 of an L-shaped column 6 fixed to the handle 10, the base shaft hole 311 of the lever plate 31, the low-step platform 61 of another L-shaped column 6, and another column 2; when the two end faces of the base shaft 4 are flush with the end faces of the columns 2 that are hinged to it (the end faces away from the base plate 11), the low-step platform 61 of the L-shaped column 6 is locked and limited by the cotter pin 9;

[0126] S042: Base shaft 4 for installing the remaining rotating assembly

[0127] One end of the base shaft 4 is sequentially passed through one of the columns 2, the low-step platform 61 of one L-shaped column 6, the low-step platform 61 of another L-shaped column 6, and another column 2 in the corresponding column group; when the two end faces of the base shaft 4 are flush with the end faces of the columns 2 that are hinged to it (the end faces away from the base plate 11), the low-step platform 61 of the L-shaped column 6 is locked and limited by the cotter pin 9.

[0128] S043: Connecting rod shaft 5 for mounting rotating assembly A

[0129] One end of the connecting rod shaft 5 is passed sequentially through the large stepped surface platform 62 of an L-shaped column 6 fixed to the handle 10, the connecting rod shaft hole 312 of the lever plate 31, and the large stepped surface platform 62 of another L-shaped column 6; the corresponding parts of the two connecting rods 7 are inserted into the two ends of the connecting rod shaft 5 respectively, and the connecting rods 7 are locked and limited on the stepped surface of the connecting rod shaft 5 by the cotter pin 9.

[0130] S044: Install the connecting rod shaft 5 of the remaining rotating assembly.

[0131] One end of the connecting rod shaft 5 is passed sequentially through the large stepped surface platform 62 of the corresponding L-shaped column 6, the clamping wheel 8, and the large stepped surface platform 62 of the other L-shaped column 6; the corresponding parts of the two connecting rods 7 are inserted into the two ends of the connecting rod shaft 5 respectively, and the connecting rods 7 are locked and limited on the stepped surface of the connecting rod shaft 5 by the cotter pin 9;

[0132] In summary, the above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A self-locking filter cartridge pressing mechanism, characterized in that, include: The system includes a base, three or more rotating groups, two connecting rods, several base shafts, several connecting rod shafts, several self-locking mechanisms, and several pressure rollers. Three or more rotating groups are arranged at intervals along the length of the base; The rotating assembly includes: two L-shaped columns arranged with their backs facing each other; the front of the L-shaped columns is stepped; in each rotating assembly, the lower stepped surface platform of the two L-shaped columns is hinged to the base through the base shaft, and the higher stepped surface platform is hinged to the connecting rod shaft. The two connecting rods are located at both ends of the connecting rod shaft and protrude from both sides of the base, respectively; The rotating assembly at the very end is used to control the movement of the connecting rod, and the pressure wheel is fitted onto each connecting rod shaft that is connected to the other rotating assemblies; Several of the self-locking mechanisms are arranged at intervals along the width direction of the base; The self-locking mechanism includes: a lever plate and a push rod assembly; The lever plate is hinged to the connecting rod shaft and the base shaft, and the connecting rod shaft and the base shaft are engaged with the rotating assembly at the outermost end; one end of the push rod assembly is hinged to the lever plate, and the other end is hinged to the base. When the clamping mechanism is in the deployed state, the lever plate is pushed against the base by the push rod assembly, forming a self-locking mechanism; When the clamping mechanism is in the clamping state, the lever plate is pushed against the filter element by the push rod assembly, forming a self-locking mechanism; It also includes three or more column groups; Three or more of the aforementioned column groups are arranged at intervals along the length of the base plate; Each column group consists of two columns; the two columns in the same column group are arranged opposite each other along the width of the base plate. The base shaft corresponds one-to-one with the column group, and the two ends of the base shaft are respectively installed on the two columns of the corresponding column group. Also includes: handles; The handle is fixedly connected to two L-shaped posts at the far end of the rotating assembly; the length direction of the handle is parallel to the length direction of the L-shaped posts. The handle is used to rotate the rotating assembly located at the far end; The lever plate is provided with three through holes B, which are respectively: base shaft hole, connecting rod shaft hole and self-locking hole; The lever plate is hinged to the base shaft connecting the outermost rotating assembly through the base shaft hole, and is hinged to the connecting rod shaft connecting the outermost rotating assembly through the connecting rod shaft hole; The push rod assembly includes: a push rod, a support guide tube, and a thrust spring; One end of the push rod is hinged to the self-locking hole of the lever plate; One end of the support conduit is open and the other end is closed; the open end of the support conduit is coaxially sleeved on the end of the push rod that is not hinged to the lever plate, and the other end is hinged to the base. The thrust spring is coaxially sleeved outside the push rod; one end of the thrust spring abuts against the end of the push rod that is hinged to the self-locking hole, and the other end of the thrust spring abuts against the open end face of the support guide tube. The push rod assembly applies a thrust to the lever plate via a thrust spring.

2. The self-locking filter cartridge pressing mechanism as described in claim 1, characterized in that, Let the center points of the three through holes B of the base shaft hole, connecting rod shaft hole and self-locking hole be O, B and A respectively; The center points O, B, and A form a triangle, where ∠AOB is not less than 90°.

3. The self-locking filter cartridge pressing mechanism as described in claim 2, characterized in that, The lever plate is triangular; The angle between the side containing the base shaft hole and the connecting rod shaft hole on the lever plate and the side containing the base shaft hole and the self-locking hole is no greater than 90°.

4. A self-locking filter cartridge pressing mechanism as described in any one of claims 1-3, characterized in that, The end of the push rod that is hinged to the self-locking hole of the lever plate is a push rod U-shaped groove; The two sidewalls of the U-shaped groove opening end of the push rod are hinged to the self-locking hole.

5. The self-locking filter cartridge pressing mechanism as described in claim 1, characterized in that, Also includes: Exhaustion point column; The exhaust point post is set on the base plate; when the clamping mechanism is in the unfolded state, the L-shaped post abuts against the exhaust point post, so that the L-shaped post and the connecting rod are not collinear.

6. The self-locking filter cartridge pressing mechanism as described in claim 1, characterized in that, The outer diameter of both ends of the clamping wheel is larger than the outer diameter of the wheel body; An adjusting shim is coaxially fitted onto the outside of the clamping wheel.

7. The self-locking filter cartridge pressing mechanism as described in claim 6, characterized in that, The base plate is provided with several recessed grooves; Each of the submerged grooves corresponds to a pressure wheel; When the clamping mechanism is in the deployed state, the clamping wheel is submerged into the corresponding recess.

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