Self-locking type filter element pressing mechanism

Abstract

The invention discloses a self-locking type filter element pressing mechanism, which belongs to the technical field of automobile internal combustion engines, and comprises a base, more than three rotating groups, two connecting rods, a plurality of base shafts, a plurality of connecting rod shafts, a plurality of self-locking mechanisms and a plurality of pressing wheels, the more than three rotating groups are arranged at intervals along the length direction of the base; the rotating set comprises two L-shaped columns, low-step-face platforms of the two L-shaped columns are hinged to the base through base shafts, and high-step-face platforms of the two L-shaped columns are hinged to connecting rod shafts. The two connecting rods are arranged at two ends of the connecting rod shaft; the connecting rod shaft is sleeved with the pressing wheel. The self-locking mechanism comprises 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 matched with the rotating set at the end. One end of the push rod assembly is hinged to the lever plate, and the other end is hinged to the base. Height superposition cannot be generated in the pressing direction, and self-locking is achieved through the self-locking mechanism, so that the pressing mechanism is simple in structure and small in occupied space, and meanwhile the stability of the pressing state can be ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile internal combustion engines, and particularly relates to a self-locking filter element pressing mechanism. Background Art

[0002] The engine intake system's air filter element is compressed using various filter element compression mechanisms. Common filter element compression mechanisms currently include a compression shaft and a handle. The compression shaft is used to press the air filter element against the air filter housing (hereinafter referred to as the housing), while the handle adjusts the height of the compression shaft in the compression direction, thereby achieving compression.

[0003] However, the existing filter element pressing mechanism still has the following problems:

[0004] (1) Occupies large space

[0005] When the filter element compactor is in the extended position, there is a height overlap in the compacting direction. Due to the limited internal space of the box, the height in the compacting direction will limit the size of the filter element. To ensure that the filter element can be installed and function properly in the box, the height of the filter element needs to be reduced.

[0006] (2) Unable to self-lock

[0007] To maintain the compressed state, a limiter is required to prevent the filter from falling out. This limiter further narrows the already limited interior space of the box and complicates the air filter structure. Furthermore, because the compression mechanism cannot self-lock, installing the filter requires the cooperation of multiple personnel (for example, one person holds the handle to keep it open while another installs the filter), which is inconvenient for the operator. Once the air filter is released from compression, the handle automatically returns to its folded state, and reopening it again is time-consuming and labor-intensive, further reducing installation efficiency.

[0008] The above problems make the existing filter element pressing mechanism inconvenient to use and urgently need to be improved. Summary of the Invention

[0009] In view of this, the present invention provides a self-locking filter element clamping mechanism, which does not produce high overlap in the clamping direction and achieves self-locking through a self-locking mechanism, so that the clamping mechanism has a simple structure and occupies a small space, while ensuring the stability of the clamping state.

[0010] The present invention is achieved through the following technical solutions:

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

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

[0013] The rotating group includes: two L-shaped columns arranged with their backs facing each other; the front of the L-shaped columns is stepped; in each rotating group, the low-step surface platforms of the two L-shaped columns are hinged to the base through the base axis, and the high-step surface platforms are hinged to the connecting rod axis;

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

[0015] A rotating group at the end is used to control the movement of the connecting rod, and the pinch wheels are sleeved on each connecting rod shaft connected to the remaining rotating groups in a one-to-one correspondence;

[0016] A plurality 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 matched with the rotating group at the 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 state;

[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 state.

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

[0022] The three or more column groups are arranged at intervals along the length direction of the base plate;

[0023] Each column group includes: two columns; the two columns in the same column group are arranged opposite to each other along the width direction of the base plate;

[0024] The base shaft corresponds to the column group one by one, and both ends of the base shaft are respectively installed on the two columns of the corresponding column group.

[0025] Furthermore, it also includes: a handle;

[0026] The handle is fixedly connected to the two L-shaped columns of the rotating group at the end; the length direction of the handle is parallel to the length direction of the L-shaped column;

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

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

[0029] The lever plate is hinged to the base shaft connected to the end rotation group through the base shaft hole, and is hinged to the connecting rod shaft connected to the end rotation group 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 hinged with the self-locking hole, and the other end of the thrust spring abuts against the end surface of the open end of the support tube;

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

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

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

[0037] Furthermore, the lever plate is triangular;

[0038] The angle between the side where the base shaft hole and the connecting rod shaft hole are located and the side where the base shaft hole and the self-locking hole are located on the lever plate is not greater than 90°.

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

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

[0041] Furthermore, it also includes: exhaustion point column;

[0042] The exhaustion point column is arranged on the bottom plate; when the pressing mechanism is in the expanded state, the L-shaped column is pressed against the exhaustion point column, so that the L-shaped column and the connecting rod are not collinear.

[0043] Furthermore, the outer diameters of both ends of the pressing wheel are larger than the outer diameter of the pressing wheel body;

[0044] An adjusting pad is coaxially sleeved outside the wheel body of the pressing wheel.

[0045] Furthermore, a plurality of submerged grooves are provided on the bottom plate of the substrate;

[0046] The submerged grooves correspond to the pressing wheels one by one;

[0047] When the pressing mechanism is in the expanded state, the pressing wheel dives into the corresponding diving groove.

[0048] Beneficial effects:

[0049] (1) The present invention provides a self-locking filter element clamping mechanism, wherein the high-stepped surfaces of the two L-shaped columns are hinged to the connecting rod shaft, and the two connecting rods are arranged at both ends of the connecting rod shaft and protrude from both sides of the base respectively. When the clamping mechanism is unfolded, the two connecting rods can protrude from both sides of the base, thereby achieving non-overlapping of the clamping mechanism in the height direction, reducing the space occupied by the clamping mechanism in the unfolded state, and lowering the size restriction on the height of the air filter element; the clamping mechanism includes a plurality of self-locking mechanisms, which can achieve self-locking of the clamping mechanism in the unfolded state and the clamped state. When the clamping mechanism is in the clamped state and the unfolded state, the push rod assembly pushes The movable lever plate is self-locking against the bottom plate, so that one person can complete the filter element installation without the cooperation of auxiliary personnel (that is, there is no need for a dedicated person to maintain the unfolded state), which simplifies the operation process and improves operational efficiency; no additional limit device is required during the clamping operation, which simplifies the structure of the clamping mechanism; in addition, the self-locking mechanism can avoid automatically returning to the folded state after the clamping of the filter element is released, further improving the installation efficiency; in addition, the clamping mechanism includes more than three rotating groups, and the movement of the connecting rod is controlled by the rotating group at the end, thereby synchronously controlling the remaining rotating groups to achieve compression of the air filter element, making the clamping mechanism easy to adjust.

[0050] (2) The present invention provides a self-locking filter element clamping mechanism, wherein a handle is fixedly connected to the two L-shaped columns of the rotating group located at the end, so as to facilitate the rotation of the rotating group at the end to achieve the clamping operation; since the handle is separated from the rotating group used for clamping, there is no need to change or replace the handle, and the mechanism can be applied to air filter elements of different shapes, thereby increasing the versatility of the clamping mechanism.

[0051] (3) A self-locking filter element clamping mechanism of the present invention is provided, wherein 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 thrust spring is coaxially sleeved outside the push rod. 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) The self-locking filter element clamping mechanism of the present invention has an angle of ∠AOB of not less than 90°, so that there is a point of maximum thrust when the self-locking mechanism changes from a clamping state to an expanded state (or vice versa), thereby avoiding unlocking in the clamping state and further ensuring the reliability of self-locking.

[0053] (5) In a self-locking filter element clamping mechanism of the present invention, the lever plate is triangular, and the angle between the sides of the lever plate where the base shaft hole and the connecting rod shaft hole are located and the sides where the base shaft hole and the self-locking hole are located 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 element pressing mechanism of the present invention, the two side walls of the open 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 a self-locking filter element clamping mechanism of the present invention, the exhaustion point column is set on the bottom plate, so that the L-shaped column of the clamping mechanism is not in line with the connecting rod in the expanded state, thereby eliminating the stuck point and making the clamping operation smoother.

[0056] (8) A self-locking filter element clamping mechanism of the present invention has an adjusting pad coaxially sleeved outside the wheel body of the clamping wheel, which can clamp filter elements with length errors.

[0057] (9) A self-locking filter element clamping mechanism of the present invention has a plurality of submersible grooves on the bottom plate of the base plate. When the clamping mechanism is in the expanded state, the clamping wheel submerges into the corresponding submersible groove, thereby further reducing the height of the clamping mechanism in the expanded state. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0059] Figure 2 It is a structural schematic diagram of the clamping mechanism assembly of the present invention in the expanded state;

[0060] Figure 3 It is a structural schematic diagram of the base of the present invention;

[0061] Figure 4 It is a structural schematic diagram of the bottom plate of the present invention;

[0062] Figure 5 Schematic diagram of the structure of the bracket of the present invention;

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

[0064] Figure 7 It is a structural schematic diagram of the column of the present invention;

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

[0066] Figure 9 Schematic diagram A of the structure of the L-shaped column of the present invention;

[0067] Figure 10Schematic diagram B of the structure of the L-shaped column of the present invention;

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

[0069] Figure 12 Schematic diagram of the connecting rod structure of the present invention;

[0070] Figure 13 It is a structural schematic diagram of the handlebar assembly of the present invention;

[0071] Figure 14 It is a structural schematic diagram of the pressure wheel of the present invention;

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

[0073] Figure 16 Schematic diagram of the structure of the push rod assembly of the present invention (in the unfolded state);

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

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

[0076] Figure 19 Schematic diagram of the thrust direction of the lever plate of the present invention;

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

[0078] Figure 21 It is a structural schematic diagram of the support conduit of the present invention;

[0079] Figure 22 This is a schematic diagram A of 180-degree superposition and overlap of the present invention;

[0080] Figure 23 This is a schematic diagram B of 180-degree superposition and overlap of the present invention;

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

[0082] Among them, 1-base, 11-bottom plate, 111-mounting hole, 112-diving groove, 12-exhaust point column, 13-bracket, 2-column, 3-self-locking mechanism, 31-lever plate, 311-base axis hole, 312-connecting rod axis 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 axis, 5-connecting rod axis, 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 DESCRIPTION

[0083] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0084] Example 1:

[0085] This embodiment provides a self-locking filter element pressing mechanism, which is installed on the air filter box body and is used to press the filter element of the air filter to the air outlet of the air filter box body (the air outlet is located at Figure 1 on the right side); 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, a plurality of rotating groups, a plurality of base shafts 4, a plurality of connecting rod shafts 5, a plurality of clamping wheels 8 and a plurality of cotter pins 9;

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

[0087] like Figure 3 and Figure 4 As shown, the bottom plate 11 is provided with a plurality of mounting holes 111 and a plurality of submerged grooves 112; the submerged grooves 112 correspond one to one with the pressing wheels 8. When the pressing mechanism is in the deployed state, the pressing wheel 8 submerges into the corresponding submerged groove 112, thereby reducing the height of the pressing mechanism in the pressing direction; as an example, there are preferably three mounting holes 111, so that the installation of the base 1 is convenient;

[0088] Several brackets 13 are arranged on the bottom plate 11; Figure 5 As shown, the bracket 13 is a U-shaped structure, the open end of the U-shaped structure is connected to the air filter case, and the closed end of the U-shaped structure is connected to the mounting hole 111 of the bottom plate 11; when the surface of the air filter case where the pressing mechanism is installed is uneven, the bracket 13 can be adjusted according to the height of different positions on the case surface so that the mounting surface of the pressing mechanism can be kept level, thereby solving the height difference problem caused by the uneven surface and improving the pressing effect on the filter element;

[0089] More than three column groups are arranged at intervals along the length direction of the bottom 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; the two columns 2 of the same column group are arranged oppositely along the width direction of the base plate 11; in this embodiment, three column groups are preferably used, and each column 2 is fixedly connected to the base plate 11 by welding;

[0090] Each column group is provided with a base shaft 4; the two ends of the base shaft 4 are respectively connected to the two columns 2 of the corresponding column group, and the axis of the base shaft 4 is parallel to the width direction of the bottom plate 11; each base shaft 4 is provided with two pin holes a, and the two pin holes a are located on the shaft body of the base shaft 4 between the two columns 2 and are symmetrically arranged; 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 corresponding to each other and are rotatably connected to the base shaft 4; each rotating group includes: two L-shaped columns 6;

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

[0093] The high-stepped platform 62 of the two L-shaped columns 6 of the same rotating group protrudes from the column 2 connected thereto, and a connecting rod shaft 5 (such as Figure 22 and 23 The axis of the connecting rod shaft 5 is parallel to the width direction of the base plate 11; Figure 11 As shown, as an example, both ends of each connecting rod shaft 5 are of 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 shaft body of the connecting rod shaft 5, and a step surface is formed at the junction of both ends of the connecting rod shaft 5 and the shaft body; each end of the connecting rod shaft 5 is respectively processed 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 realize the synchronous rotation of each L-shaped column 6; Figure 1 and Figure 2 As shown, two connecting rods 7 are respectively installed at the two ends of a plurality of connecting rod shafts 5, and the two connecting rods 7 protrude from both sides of each column group; the cotter pin 9 set in the pin hole b forms an axial limit for the connecting rod 7; the diameter-reducing structure on the connecting rod shaft 5 can prevent the column 2 on the bottom plate 11 from interfering with the movement of the L-shaped column 6 and the connecting rod 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 group located at the end of the bottom plate 11 is used to control the movement of the connecting rod 7, thereby realizing the synchronous lifting and lowering movement of the other rotating groups; let this rotating group be rotating group A; the handle 10 is set on the rotating group A; specifically, the handle 10 is fixedly connected to the two L-shaped columns 6 of the rotating group A by welding; 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 moves along the clamping direction (i.e., perpendicular to the surface of the bottom plate 11), thereby realizing the clamping or releasing operation of the clamping mechanism; the handle 10 and the two L-shaped columns 6 connected to the handle 10 form a handle assembly;

[0096] The pressing wheel 8 outside the rotating group is used to press the filter element to the vent in the filter box; Figure 1 、 Figure 2 、 Figure 22 and Figure 23 As shown, the pressing wheels 8 are sleeved one by one on all the connecting rod shafts 5 that are not hinged to the rotating group A; Figure 14 As shown, the outer diameter of each end portion of the pressing wheel 8 is larger than the outer diameter of the pressing wheel 8 body, that is, the outer wall surface of the pressing wheel 8 is a structure with high ends and low middle, and an adjustment pad is coaxially sleeved on the low middle structure, so that the pressing wheel 8 is conducive to compacting the filter element with length error; as an example, the adjustment pad is made of metal; the pressing wheel 8 corresponds to the submergence groove 112 one by one, and when the pressing mechanism is in the expanded state, the pressing wheel 8 can be submerged in the submergence groove 112, further reducing the overlap of the pressing mechanism in the compaction height;

[0097] Several of the self-locking mechanisms 3 are arranged at intervals along the width direction of the bottom plate 11; specifically, Figure 1 、 Figures 15 and 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 fixedly connected to the plate surface of the bottom plate 11 and is located between the rotating group A and the rotating group adjacent to the 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 is provided with three through holes B, namely: a base shaft hole 311, a connecting rod shaft hole 312, and a self-locking hole 313. The center points of the three through holes B are O, B, and A, respectively. The center points O, B, and A form a triangle, in which ∠AOB is not less than 90°. The lever plate 31 is hinged to the base shaft 4 connected to the rotating group A through the base shaft hole 311, and is hinged to the connecting rod shaft 5 connected to the rotating group 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 ∠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 hinged to the self-locking hole 313 and the through hole A respectively; 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 formed integrally with a push rod U-shaped groove 3211 and a rod body; one end of the rod body is provided with 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 through a cotter pin 9;

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

[0103] The thrust spring 323 is coaxially sleeved outside the rod body 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 surface of the catheter body;

[0104] The push rod assembly 32 always applies a thrust to the center point A of the lever plate 31, and the thrust direction is as follows: Figure 19 As shown in FIG, as the handle 10 rotates, it changes between the two arrow directions ( Figure 19, the arrow on the left side represents a schematic diagram of the thrust direction of the thrust spring 323 when the pressing mechanism is in the pressed state, and the arrow on the right side represents a schematic diagram of the thrust direction of the thrust spring 323 when the pressing mechanism is in the expanded state);

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

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

[0107] The exhaustion point column 12 is used to prevent the L-shaped column 6 and the connecting rod 7 from being in the same line; the exhaustion point column 12 is located at the overlapping portion of the L-shaped column 6 and the bottom plate 11 when the L-shaped column 6 rotates to be parallel to the bottom plate 11; the exhaustion point column 12 is arranged along the width direction of the bottom plate 11; the structure of the exhaustion point column 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 to 5 mm; 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 unfolding state, and the clamping state and the unfolding state are achieved by rotating the handle 10;

[0110] When the clamping mechanism is in the clamping state, 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 rectangular parallelepiped structure; when the clamping state is released, the handle 10 drives the two L-shaped columns 6 fixed thereto to rotate around the axis of the base axis 4; the connecting rod shaft 5 on the rotating group A rotates around the axis of the base axis 4 as the L-shaped column 6 rotates; at this time, the two connecting rods 7 move with the connecting rod shaft 5, and drive the connecting rod shafts 5 in the remaining rotating groups other than the rotating group A to rotate synchronously around the axis of the corresponding base axis 4; in the above process, the rectangular side formed by the base plate 11, several L-shaped columns 6 and connecting rods 7 is converted into a parallelogram structure; the connecting rod 7 continuously approaches the base plate 11, and when the angle between the handle 10 and the base plate 11 is infinitely close to 180°, the clamping mechanism is in the expanded state; when the clamping mechanism is in the expanded state, as shown Figure 2 As shown, the L-shaped column 6 and the bottom plate 11 are nearly parallel, and the two connecting rods 7 are respectively located on both sides of the base 1, so that there is no height overlap of the various components of the clamping mechanism in the clamping direction, thereby minimizing the height of the clamping mechanism;

[0111] When the clamping state is released, the rectangular structure formed by the base plate 11, the plurality of L-shaped columns 6 and the connecting rod 7 gradually deforms and becomes collinear (i.e., the L-shaped column 6 and the connecting rod 7 form a straight line); at this time, the L-shaped column 6 cannot generate a torque capable of rotating the L-shaped column 6 and lifting it under the pull of the handle 10, so that the L-shaped column 6 cannot be transformed from a state parallel to the base plate 11 to a state perpendicular to the base plate 11; after the exhaustion point column 12 is set, the L-shaped column 6 and the connecting rod 7 are always not collinear (i.e., an angle is formed between the L-shaped column 6 and the connecting rod 7), thereby avoiding the L-shaped column 6 and the connecting rod 7 from being collinear, thereby eliminating the card point of the clamping mechanism.

[0112] The self-locking mechanism 3 adopts the lever principle; in the triangular lever plate 31, the center point O is the fulcrum, the center point A is the action point, and "OA" is 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 process, the thrust spring 323 is always in a compressed state, that is, the thrust spring always applies a torque to the lever "OA"; when the push rod 321 and the lever "OA" are collinear, the compression of the thrust spring 323 is the largest, and the torque generated is the largest; therefore, the lever plate 31 is Figure 15 The expanded state in 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, when no external force is applied, the self-locking mechanism 3 is not unlocked, that is, it can achieve self-locking in the compressed state; when the lever plate 31 is out of 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 hits the bottom plate 11, self-locking in the expanded state is achieved; when the lever plate 31 continues to rotate until the lever plate 31 hits the filter element to be compressed, self-locking in the compressed state is achieved; in the triangle OAB, ∠AOB is not less than 90° so that the lever plate 31 is Figure 15 The state changes to Figure 16 In the state of , the push rod 321 and the lever "OA" are collinear.

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

[0114] S01: Assemble base 1

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

[0116] S02: Assemble the handlebar assembly

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

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

[0119] S031: hinge the self-locking hole 313 of the lever plate 31 with the U-shaped groove 3211 of the push rod, and lock and limit them with the cotter pin 9;

[0120] S032: Sleeve the thrust spring 323 onto the push rod 321;

[0121] S033: Hinging the U-shaped groove 3221 of the supporting conduit 322 with the through hole A of the self-locking bolt 33, and locking and limiting them with the cotter pin 9;

[0122] S034: The support guide tube 322 is inserted into the push rod 321;

[0123] S04: Assemble the rotating group

[0124] S041: Install the base axis 4 of the rotating group 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-stepped surface platform 61 of an L-shaped column 6 fixedly connected to the handle 10, the base shaft hole 311 of the lever plate 31, the low-stepped surface platform 61 of another L-shaped column 6, and another column 2; when the end faces of the base shaft 4 are respectively flush with the end faces of the columns 2 to which they are hinged (the end faces facing away from the bottom plate 11), the low-stepped surface platform 61 of the L-shaped column 6 is locked and limited by the cotter pin 9;

[0126] S042: Install the base axis 4 of the remaining rotating group

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

[0128] S043: Install the connecting rod shaft 5 of the rotating group A

[0129] Pass one end of the connecting rod shaft 5 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 the other L-shaped column 6 in sequence; insert the corresponding parts of the two connecting rods 7 into the two ends of the connecting rod shaft 5, and lock the connecting rods 7 with the cotter pins 9 and limit them to the stepped surface of the connecting rod shaft 5;

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

[0131] Pass one end of the connecting rod shaft 5 through the large stepped surface platform 62 of the corresponding L-shaped column 6, the pressure wheel 8, and the large stepped surface platform 62 of the other L-shaped column 6 in sequence; insert the corresponding parts of the two connecting rods 7 into the two ends of the connecting rod shaft 5 respectively, and lock the connecting rods 7 with the cotter pin 9 and limit them on the step surface of the connecting rod shaft 5;

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

Claims

1. A self-locking filter element pressing mechanism, characterized in that: include: A base, three or more rotating groups, two connecting rods, a plurality of base shafts, a plurality of connecting rod shafts, a plurality of self-locking mechanisms and a plurality of pressing wheels; Three or more rotating groups are arranged at intervals along the length direction of the base; The rotating group includes: two L-shaped columns arranged with their backs facing each other; the front of the L-shaped columns is stepped; in each rotating group, the low-step surface platforms of the two L-shaped columns are hinged to the base through the base axis, and the high-step surface platforms are hinged to the connecting rod axis; The two connecting rods are arranged at both ends of the connecting rod shaft and protrude from both sides of the base respectively; A rotating group at the end is used to control the movement of the connecting rod, and the pinch wheels are sleeved on each connecting rod shaft connected to the remaining rotating groups in a one-to-one correspondence; A plurality 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 matched with the rotating group at the 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 state; 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 state.

2. A self-locking filter element pressing mechanism as claimed in claim 1, characterized in that: It also includes groups of three or more columns; The three or more column groups are arranged at intervals along the length direction of the base plate; Each column group includes: two columns; the two columns in the same column group are arranged opposite to each other along the width direction of the base plate; The base shaft corresponds to the column group one by one, and both ends of the base shaft are respectively installed on the two columns of the corresponding column group.

3. A self-locking filter element pressing mechanism as claimed in claim 1, characterized in that: Also includes: handle; The handle is fixedly connected to the two L-shaped columns of the rotating group at the end; the length direction of the handle is parallel to the length direction of the L-shaped column; The handle is used to rotate the rotating group located at the end.

4. A self-locking filter element pressing mechanism as claimed in claim 1, characterized in that: The lever plate is provided with three through holes B, which are respectively: a base shaft hole, a connecting rod shaft hole and a self-locking hole; The lever plate is hinged to the base shaft connected to the end rotation group through the base shaft hole, and is hinged to the connecting rod shaft connected to the end rotation group 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 plate; The thrust spring is coaxially sleeved outside the push rod; one end of the thrust spring abuts against the end of the push rod hinged with the self-locking hole, and the other end of the thrust spring abuts against the end surface of the open end of the support tube; The push rod assembly applies a thrust to the lever plate through a thrust spring.

5. A self-locking filter element pressing mechanism as claimed in claim 4, characterized in that: The center points of the three through holes B of the base shaft hole, connecting rod shaft hole and self-locking hole are O, B and A respectively; The center points O, B and A form a triangle, in which ∠AOB is not less than 90°.

6. A self-locking filter element pressing mechanism as claimed in claim 5, characterized in that: The lever plate is triangular; The angle between the side where the base shaft hole and the connecting rod shaft hole are located and the side where the base shaft hole and the self-locking hole are located on the lever plate is not greater than 90°.

7. A self-locking filter element pressing mechanism according to any one of claims 4 to 6, characterized in that: The end of the push rod hinged to the self-locking hole of the lever plate is a push rod U-shaped groove; The two side walls of the open end of the U-shaped groove of the push rod are hinged to the self-locking hole.

8. A self-locking filter element pressing mechanism as claimed in claim 1, characterized in that: Also includes: exhaustion point column; The exhaustion point column is arranged on the bottom plate; when the pressing mechanism is in the expanded state, the L-shaped column is pressed against the exhaustion point column, so that the L-shaped column and the connecting rod are not collinear.

9. A self-locking filter element pressing mechanism as claimed in claim 1, characterized in that: The outer diameters of both ends of the pressure wheel are larger than the outer diameter of the pressure wheel body; An adjusting pad is coaxially sleeved outside the wheel body of the pressing wheel.

10. A self-locking filter element pressing mechanism as claimed in claim 9, characterized in that: The bottom plate of the substrate is provided with a plurality of submerged grooves; The submerged grooves correspond to the pressing wheels one by one; When the pressing mechanism is in the expanded state, the pressing wheel dives into the corresponding diving groove.

Images