WO2018210061A1 - Sealing mechanism for push-pull device - Google Patents

Abstract

A sealing mechanism (100) for a push-pull device. The sealing device (100) comprises a first sash frame (1), a second sash frame (2), a control device (3), a first transmission device (4), a second transmission device (5), and a sealing device (6). The second sash frame (2) is horizontally disposed and two ends thereof are fixedly connected to two ends of the first sash frame (1), respectively. The control device (3) is fixedly connected to the first sash frame (1). The first transmission device (4) is provided in the first sash frame (1), and is transmittingly connected to the control device (3). The sealing device (6) is located at the bottom of the second sash frame (2). The second transmission device (5) comprises a lifting rod (51) and a plurality of springs (52). The lifting rod (51) is horizontally disposed in the second sash frame (2), the tops of both ends of the lifting rod (51) are fixedly connected to both ends of the first transmission device (4) respectively, and the bottom of the lifting rod (51) is fixedly connected to the sealing device (6). The tops of the plurality of springs (52) are all fixedly connected to the bottom of the first sash frame (1), and the bottoms of the plurality of springs (52) are all fixedly connected to the top of the lifting rod (51). The sealing mechanism (100) can be raised and lowered to fully seal the bottom of the device.

Description

Sealing mechanism of push-pull device

The present application claims the priority of the Chinese Patent Application, filed on May 17, 2017, the disclosure of which is hereby incorporated by reference.

Technical field

The invention relates to the technical field of aluminum alloy doors and windows, in particular to a sealing mechanism of a push-pull device.

Background technique

Most of the traditional sliding doors and windows are sealed by the tops. Because the strips are applied to ordinary sliding doors and windows, the friction during the push-pull process is too large, which not only affects the smoothness of the push-pull, but also affects the service life of the strip.

Although the top has a certain barrier effect on rain, dust, airflow, etc., its loose structure greatly reduces the sealing performance of the top. In the summer or winter, the air-conditioning and heating are easily lost, resulting in waste of energy. In the typhoon-prone areas such as coastal cities, or in wind and rain, the bottom of the sliding doors and windows is prone to water leakage. Especially for low-rail sliding doors, the track is inherently low, and the tops under the profiles can not achieve a good lap joint with the sliding profiles, which can easily lead to a series of problems such as water seepage and air leakage. The bottom of the hook is The most important reason for this problem is that the bottom side of the hook is usually not sealed.

Although the high-rail sliding door has better watertight performance than the low-rail sliding door, due to the high height of the track protruding from the ground, it will cause certain obstacles to personnel access, and its airtightness has not been greatly improved. In addition, the high-rail design will cause some deep pits in the sliding of the push-pull device. The usual cleaning tools are difficult to clean, and it is easy to accumulate dust, which is not conducive to sanitary cleaning, and even hinders the sliding of the fan material and affects the use effect.

Summary of the invention

In view of the above problems, an object of the present invention is to provide a sealing mechanism that solves the above problems. In particular, the present invention provides a sealing mechanism capable of improving the sealing performance of the push-pull device.

The invention provides a sealing mechanism of a push-pull device, the sealing mechanism comprising a first fan frame, a second fan frame, a control device, a first transmission device, a second transmission device and a sealing device, wherein the second fan The frame is horizontally disposed, and the two ends of the second frame are respectively fixedly connected to the two ends of the first frame, the control device is fixedly connected to the first frame, and the first transmission is disposed at The first fan frame is connected to the control device; the sealing device is located at the bottom of the second frame;

The second transmission device includes a lifting rod and a plurality of springs, the lifting rod is horizontally disposed in the second frame, and the top ends of the lifting rod are respectively fixedly connected with the two ends of the first transmission device a bottom of the lifting rod is fixedly connected to the sealing device; a top end of the plurality of springs is fixedly connected to a bottom end of the first frame, and a bottom end of the plurality of springs is connected to the lifting rod The top is fixedly connected.

The first frame includes a first frame, a horizontal frame, and a second frame, and the first end of the first frame and the first end of the frame are both 45 degrees and fixed. Connecting; the second end of the horizontal frame and the first end of the second vertical frame are both 45 degrees, and are fixedly connected; the first vertical frame and the second vertical frame are perpendicular to the The horizontal frame is disposed on the same side of the horizontal frame; the second end of the first vertical frame and the second end of the second vertical frame are respectively fixedly connected to the top ends of the plurality of springs.

Wherein the first transmission device includes a first transmission rod, a second transmission rod, a third transmission rod and a fourth transmission rod; wherein the first end of the first transmission rod and the fourth transmission rod One end is fixedly connected to the top ends of the lifting rods respectively; the second end of the first transmission rod, the two ends of the second transmission rod and the first end of the third transmission rod are both 45 degrees a beveled structure, and the second end of the first transmission rod is drivingly coupled to the first end of the second transmission rod, the second end of the second transmission rod and the first end of the third transmission rod a transmission connection; a second end of the third transmission rod and a second end of the fourth transmission rod are both connected to the control device, and the third transmission rod and the fourth transmission rod are respectively located at the Control different sides of the device.

Wherein the end face width of the first end of the second transmission rod is 1/3 to 2/3 of the width of the second transmission rod, and the end surface width of the first end of the third transmission rod is the The width of the three transmission rods is 1/3 to 2/3.

Wherein, the first vertical frame is provided with a first transmission slot, the horizontal frame is provided with a second transmission slot, and the second vertical frame is provided with a third transmission slot, the first transmission rod and the The first transmission slot is slidably coupled to the second transmission slot, and the third transmission lever and the fourth transmission lever are both slidably coupled to the third transmission slot.

Wherein the width of the first transmission slot is equal to the width of the first transmission rod, the width of the second transmission slot is equal to the width of the second transmission rod, and the width of the third transmission slot is The width of the third transmission rod is equal.

The lifting frame is disposed in the lifting slot and is slidably connected to the second frame, and the width of the lifting slot is greater than the width of the lifting rod.

Wherein the sealing device comprises a sealing strip and a sealing block, the sealing strip is located at the bottom of the second frame and is fixedly connected with the lifting rod; the sealing block is located at the second frame The end portion is disposed flush with the end of the sealant strip.

Wherein, the control device comprises a handle and a transmission, and the transmission is drivingly connected to the first transmission through the first fan frame, and the handle is fixedly connected with the transmission.

The beneficial effects of the invention include: the sealing mechanism of the push-pull device provided by the invention utilizes the resilience of the spring, so that the sealing strip can rise with the pushing and pulling of the device, and the friction between the sealing strip and the sliding rail is prevented from affecting the smooth sliding. The sealing strip can also be lowered as the device is closed, and the bottom of the device is fully sealed to provide sealing performance of the device to achieve anti-seepage, windproof, dustproof and insect-proof sealing effects.

DRAWINGS

The accompanying drawings, which are incorporated in FIG In the drawings, like reference numerals are used to refer to the like. The drawings in the following description are some embodiments of the invention, rather than all embodiments. Other figures may be obtained from those of ordinary skill in the art in light of the inventive work.

Figure 1 is a schematic structural view of a sealing mechanism of a push-pull device;

2 is a schematic view showing a sealed state in a second frame;

3 is a schematic diagram of a push-pull state in a second frame;

4 is a schematic structural view of a first vertical frame;

Figure 5 is a schematic structural view of a horizontal frame;

Figure 6 is a bottom structural view of an embodiment of a sealing mechanism;

Figure 7 is a bottom structural view of another embodiment of the sealing mechanism;

Figure 8 is a schematic structural view of a control device;

Figure 9 is a schematic view showing the structure of the actuator.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

In order to make up for the insufficient sealing caused by the looseness of the top, the inventors used a sealing strip for sealing; and in order to avoid the obstruction caused by the friction of the bottom of the sealing strip during the pushing and pulling process, the inventor designed a transmission device. The retractable performance of the spring drives the sealing strip to slide up and down within the bottom frame. When the push-pull device is closed, the transmission device presses the sealing strip to ensure the sealing performance of the device; during the pushing and pulling process, the sealing strip is lifted, thereby avoiding friction with the ground or track at the bottom of the fan frame, ensuring the push-pull action Smoothness, extend the life of the device and the strip.

The sealing mechanism of the push-pull device according to the present invention will be described in detail below with reference to the accompanying drawings.

1 is a schematic structural view of a specific embodiment of a sealing mechanism of the push-pull device of the present invention. Referring to FIG. 1, the sealing mechanism 100 includes a first frame 1, a second frame 2, and a control device 3. The first transmission 4, the second transmission 5 and the sealing device 6. The first frame 1 is an inverted U-shaped structure, the second frame 2 is horizontally disposed, and the two ends of the second frame 2 are respectively fixedly connected to the two ends of the first frame 1; the control device 3 and the first fan The frame 1 is fixedly connected, the first transmission device 4 is disposed in the first frame 1 and is drivingly connected to the control device 3; the second transmission device 5 is located in the above-ground fan frame 2, and the sealing device 6 is located at the bottom of the second frame 2 And fixedly connected to the second transmission device 5. During the process of pushing and closing the push-pull device, the control device 3 drives the sealing device 6 to rise or fall by the transmission between the first transmission device 4 and the second transmission device 5, thereby ensuring the smoothness or sealing performance of the push-pull process.

In a typical embodiment, the second transmission 5 includes a lifting rod 51 and a plurality of springs 52, the lifting rod 51 is horizontally disposed in the second frame 2, and the tops of the two ends of the lifting rod 51 are respectively coupled to the first transmission The two ends of the lifting rod 51 are fixedly connected to the sealing device 6; the top ends of the plurality of springs 52 are fixedly connected with the bottom end of the first frame frame 1, and the bottom ends of the plurality of springs 52 are respectively connected with the lifting rod 51. The top is fixedly connected. In actual use, the control device 3 forces the lifting rod 51 to descend and pull the spring 52 by controlling the lowering of the both ends of the first transmission device 4, thereby controlling the lowering of the sealing device 6 at the bottom of the second frame 2. In order to improve the sealing performance of the push-pull device; when the push-pull operation of the push-pull device is required, the control device 3 controls the first transmission device 4 to rise, under the dual action of the elastic restoring force of the spring 52 and the pulling force of the first transmission device 4 The lifting rod 51 drives the sealing device 6 to rise in the second frame 2 away from the push-pull track to avoid friction between the sealing device 6 and the track and affect the smoothness of the push-pull and the service life of the sealing device 6.

Specifically, the first frame 1 includes a first frame 11, a frame 12, and a second frame 13, wherein the first end of the first frame 11 and the first end of the frame 12 are both 45 degrees. And fixedly connecting with each other; the second end of the horizontal frame 13 and the first end of the second vertical frame 13 are both 45-degree structures, and are fixedly connected to each other; the first vertical frame 11 and the second vertical frame 13 are perpendicular to the horizontal Block 12 is provided and is located on the same side of the cross frame 12. The second end of the first frame 11 is fixedly connected to the first end of the second frame 2, and the second end of the second frame 13 is fixedly connected to the second end of the second frame 2. In the embodiment shown in FIG. 1 , both ends of the second frame 2 , the second end of the first frame 11 and the second end of the second frame 13 are both 45-degree beveled structures, which not only facilitates the transmission device. The smooth transmission between the two can also effectively ensure the overall stability of the push-pull device.

In the embodiment shown in FIG. 1, two springs 52 are disposed in the second transmission 5 of the sealing mechanism 100, and the second ends of the first vertical frame 11 and the second ends of the second vertical frame 13 are respectively The top ends of the springs 52 are fixedly connected. When the first transmission device 4 pushes the lifting rod 51 down, the lifting rod 51 stretches the two springs 52. When the first transmission device 4 is relaxed, the spring 52 raises the lifting rod 51 back under the action of the restoring force. In situ.

Specifically, the first transmission 4 includes a first transmission rod 41, a second transmission rod 42, a third transmission rod 43, and a fourth transmission rod 44. The first end of the first transmission rod 41 and the first end of the fourth transmission rod 44 are respectively fixedly connected with the top ends of the lifting rod 51; the second end of the first transmission rod 41 and the second transmission rod 42 The first end of the end and the third transmission rod 43 are both 45-degree inclined structure, the second end of the first transmission rod 41 is drivingly connected with the first end of the second transmission rod 42, and the second end of the second transmission rod 42 is The first end of the third transmission rod 43 is drivingly connected; the second end of the third transmission rod 43 and the second end of the fourth transmission rod 44 are both connected to the control device 3, and the third transmission rod 43 and the fourth transmission rod 44 are connected. They are located on different sides of the control device 3, respectively. Under the action of the control device 3, the moving direction and amplitude of the fourth transmission rod 44 are the same as the moving direction and amplitude of the first transmission rod 41 under the transmission of the third transmission rod 43 and the second transmission rod 42, and thus Both ends of the control lifter 51 are smoothly moved during ascending or descending.

In order to realize the transmission movement between the third transmission rod 43, the second transmission rod 42 and the first transmission rod 41, the second end of the first transmission rod 41 and the second end of the second transmission rod 42 are completely beveled structures. The first end of the second transmission rod 42 and the first end of the third transmission rod 43 are both incompletely beveled structures, that is, a flat end surface perpendicular to the side surface is left. In the actual installation process, in the push-pull state, the side ends of the first transmission rod 41, the second transmission rod 42 and the third transmission rod 43 on the inner side of the inverted U-shaped structure of the first vertical frame 1 are aligned.

2 is a structural schematic view of the second frame of the sealing mechanism of the present invention in a sealed state, and FIG. 3 is a schematic structural view of the second frame in a push-pull state. In the present embodiment, the lifting rod 51 is A positioning groove 510 is provided at the bottom, and the sealing device 6 is fixed to the bottom of the lifting rod 51 through the positioning groove 510. Referring to FIG. 1 to FIG. 3, when the push-pull device is closed, under the action of the control device 3, the fourth transmission rod 44 moves down and the third transmission rod 43 moves up, under the transmission of the 45-degree inclined structure, The first end of the third transmission rod 43 pushes the second transmission rod 42 to move in the direction of the first transmission rod 41, and the first transmission rod 41 moves downward, and the first transmission rod 41 and the fourth transmission rod 44 are respectively downward. Squeezing the lifting rod 51, so that the lifting rod 51 drives the sealing device 6 to move down, and simultaneously stretches the two springs 52; conversely, when the pushing and pulling device needs to be pushed and pulled, under the action of the control device 3, the third transmission The rod 43 moves down and the fourth transmission rod 44 moves up. Under the elastic restoring force of the spring 52, the spring 52 drives the lifting rod 51 to move up, thereby pushing the first transmission rod 41 to move up, and the first transmission rod 41 is pushed. The two transmission rods 42 are moved in the direction of the third transmission rod 43, and the sealing device 6 is raised by the lifting rod 51 to reduce the friction between the rail and the rail, thereby ensuring smooth pushing and pulling of the push-pull device.

The first end of the third transmission rod 43 and the first end of the second transmission rod 42 have a flat end surface such that the slope length of the first end of the third transmission rod 43 is smaller than the slope of the second end of the second transmission rod 42. The length of the slope of the first end of the second transmission rod 42 is smaller than the length of the slope of the second end of the first transmission rod 41, thereby ensuring the movement of the third transmission rod 43 and the second transmission rod 42 during the transmission process, and ensuring Under the action of the first transmission rod 41 and the fourth transmission rod 44, the lifting device 51 can smoothly drive the lifting device 6 to rise or fall, thereby achieving the corresponding smooth pushing and pulling or improving the sealing performance.

Generally, the end face width of the first end of the second transmission rod 42 is 1/3 to 2/3 of the width of the second transmission rod 42, and the end surface width of the first end of the third transmission rod 43 is the third transmission rod. 1/3 to 2/3 of the width of 42 is sufficient to ensure the stroke of the sealing device 6 to rise or fall, and to ensure the smoothness of the push-pull device and the service life of the sealing device 6 under the premise of ensuring the sealing performance of the push-pull device.

Fig. 4 is a view showing the internal structure of a specific embodiment of the first frame of the present invention, and Fig. 5 is a view showing the internal structure of a specific embodiment of the frame of the present invention. In order to ensure that the first transmission rod 41, the second transmission rod 42, the third transmission rod 43 and the fourth transmission rod 44 can only move along their lengths in order to control their movement stroke and ensure effective movement of the sealing device 6, A first transmission slot 110 (FIG. 4) is disposed in the first vertical frame 11, a second transmission slot 120 (FIG. 5) is disposed in the horizontal frame 12, and a third transmission slot is disposed in the second vertical frame 13 (in the figure) Not shown), the first transmission rod 41 is slidably coupled to the first transmission slot 110, the second transmission rod 42 is slidably coupled to the second transmission slot 120, and the third transmission rod 43 and the fourth transmission rod 44 are both coupled to the third transmission slot Slide the connection.

Specifically, the width of the first transmission slot 110 is equal to or slightly larger than the width of the first transmission rod 41, the width of the second transmission slot 120 is equal to or slightly larger than the width of the second transmission rod 42, and the width of the third transmission slot is equal to or slightly Greater than the width of the third transmission rod 43, that is, the first transmission rod 41 can only slide along the length of the first transmission slot 110, and the second transmission rod 42 can only slide along the length of the second transmission slot 120. The third transmission rod 43 and the fourth transmission rod 44 can only slide along the length thereof in the third transmission groove.

Referring to FIG. 2 and FIG. 3, a lifting slot 20 is disposed in the second frame 2, and the lifting rod 51 is located in the lifting slot 20 and is slidably connected to the second frame 2, and the width of the lifting slot 20 is greater than The width of the lifting rod 51 and the length of the lifting groove 20 are adapted to the length of the lifting rod 51, so that the lifting rod 51 can only slide up and down in the lifting groove 20 to drive the sealing device 6 up or down.

In the sealing mechanism 100 of the push-pull device provided by the present invention, the sealing device 6 may include a sealant strip 61 and a sealing block 62, and FIG. 6 shows a bottom structure of an embodiment of the sealing mechanism of the push-pull device of the present invention. Schematic, FIG. 7 shows a bottom structural view of another embodiment of the sealing mechanism. Referring to FIG. 6 and FIG. 7 , the sealing strip 61 is located at the bottom of the second frame 2 and is fixedly connected to the lifting rod 51 , that is, the sealing strip 61 is disposed parallel to the second frame 2 and the lifting rod 51 for The bottom of the second frame 2 is sufficiently sealed; the sealing block 62 is located at the end of the second frame 2, is fixedly connected to the end of the lifting rod 51, and is flush with the end of the sealing strip 61 for The sealing of the bottom side of the hooking enterprise is realized, the sealing performance of the push-pull device is further improved, and the sealing block 62 also moves with the upward movement of the lifting rod 51.

In actual use, the size of the sealing block 62 can be selectively set according to actual conditions. Specifically, the width of the sealing block 62 may be equal to the thickness of the second frame 2 (as shown in FIG. 6), or may be equal to the interval between the two lifting slots 20 in the second frame 2 (FIG. 7). Shown). The former sealing block 62 achieves complete sealing of the end of the second frame 2, at which time the length of the lifting rod 51 is smaller than the length of the second frame 2; the latter can be used for the end of the second frame 2 The position of the lifting rods 51 is sealed, and the length of the lifting rods 51 is equal to the length of the second frame 2 at this time.

In a typical embodiment, the control device 3 of the sealing mechanism of the present invention comprises a handle 31 and an actuator 32. The actuator 32 is drivingly coupled to the first transmission 4 via the first frame 1, the handle 31 and the actuator 32 fixed connection. The upper portion and the lower portion of the transmission 32 are respectively coupled to the second end of the third transmission rod 43 and the second end of the fourth transmission rod 44. The rotation handle 31 can control the third transmission rod 43 and the third through the transmission 32. The movement of the four transmission rods 44.

Among them, the actuator 32 can be selected from existing products. Figure 8 is a schematic view showing the structure of an embodiment of the control device 3 of the present invention, and Figure 9 is a schematic view showing the internal transmission structure of a specific embodiment of the actuator 32, as shown in Figures 8 and 9, In this embodiment, the output end of the handle 31 and the input end of the actuator 32 are connected by a square shaft drive. Specifically, the actuator 32 includes a control wheel 321, a transmission wheel 322, a first transmission member 323, and a second transmission member 324. The output end of the handle 31 is connected to the center of the control wheel 321, and the control wheel 321 is simultaneously coupled to the transmission wheel 322. The first end of the first transmission member 323 is engaged and driven, and the transmission wheel 322 is engaged with the first end of the second transmission member 324. The second end of the first transmission member 323 and the second end of the second transmission member 324 are coupled. They are fixedly connected to the third transmission rod 43 and the fourth transmission rod 44, respectively. During use, the control wheel 321 is rotated by twisting the handle 31, thereby controlling the first transmission member 323 to rotate in a direction opposite to the direction of rotation of the control wheel 321, while the second transmission member 324 is controlled by the transmission wheel 322. The control wheel 321 rotates in the same direction of rotation, that is, the second transmission member 324 and the first transmission member 323 move in the opposite direction, so that the third transmission rod 43 and the fourth transmission rod 44 can be controlled to move in opposite directions in any case. .

The above description may be implemented individually or in combination in various ways, and such modifications are within the scope of the invention.

The specific dimensional values of the members listed in the present invention are exemplary values, and the dimensional parameters of the different members may be different in actual engineering depending on the building construction requirements.

It should be noted that, in this context, relational terms such as first and second are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply such entities or operations. There is any such actual relationship or order between them. Furthermore, the terms "comprise," "comprise," or "comprising" or "comprising" or "comprising" or "the" Or it also includes elements that are inherent to such an item or device. An element defined by the phrase "comprising", without further limitation, does not exclude the presence of additional identical elements in the item or device including the element.

The above embodiments are only intended to illustrate the technical solutions of the present invention and are not to be construed as limiting the invention. It should be understood by those skilled in the art that the present invention may be modified or equivalently substituted without departing from the spirit and scope of the invention.

Industrial applicability

The invention utilizes the resilience force of the spring, so that the sealing strip can rise with the push-pull of the push-pull device, effectively avoiding the friction between the sealing strip and the sliding rail, affecting the smoothness of the push-pull; the sealing strip can also be closed with the device. When it is lowered, the bottom of the device is fully sealed to improve the sealing performance of the push-pull device, and the sealing effect of anti-seepage, windproof, dustproof and insect-proof is achieved.

Claims (9)

A sealing mechanism (100) for a push-pull device, characterized in that the sealing mechanism (100) comprises the sealing mechanism (100) comprising a first fan frame (1), a second fan frame (2), and a control device ( 3) a first transmission (4), a second transmission (5) and a sealing device (6); The second frame (2) is horizontally disposed, and two ends of the second frame (2) are respectively fixedly connected to both ends of the first frame (1), and the control device (3) is The first fan frame (1) is fixedly connected, the first transmission device (4) is disposed in the first fan frame (1), and is drivingly connected with the control device (3); the sealing device (6) located at the bottom of the second frame (2); The second transmission device (5) includes a lifting rod (51) and a plurality of springs (52), the lifting rod (51) being horizontally disposed in the second frame (2), the lifting rod (51) The top ends of the two ends are fixedly connected to the two ends of the first transmission device (4), the bottom of the lifting rod (51) is fixedly connected with the sealing device (6); the plurality of springs (52) The top ends are fixedly connected to the bottom end of the first frame (1), and the bottom ends of the plurality of springs (52) are fixedly connected to the top of the lifting rod (51). The sealing mechanism (100) of claim 1 wherein: The first frame (1) includes a first vertical frame (11), a horizontal frame (12) and a second vertical frame (13), and the first end of the first vertical frame (11) and the horizontal frame The first ends of (12) are both 45-degree structures and are fixedly connected; the second ends of the horizontal frame (12) and the first ends of the second vertical frames (13) are both 45-degree structures, and Performing a fixed connection; the first vertical frame (11) and the second vertical frame (13) are both disposed perpendicular to the horizontal frame (12) and located on the same side of the horizontal frame (12); The second end of the first vertical frame (11) and the second end of the second vertical frame (13) are fixedly connected to the top ends of the plurality of springs (52), respectively. The sealing mechanism (100) of claim 2, wherein The first transmission (4) includes a first transmission rod (41), a second transmission rod (42), a third transmission rod (43) and a fourth transmission rod (44); Wherein the first end of the first transmission rod (41) and the first end of the fourth transmission rod (44) are respectively fixedly connected with the top ends of the lifting rod (51); the first transmission a second end of the rod (41), both ends of the second transmission rod (42) and a first end of the third transmission rod (43) are both 45-degree beveled structures, and the first transmission rod The second end of (41) is drivingly coupled to the first end of the second transmission rod (42), the second end of the second transmission rod (42) and the first end of the third transmission rod (43) An end drive connection; a second end of the third transmission rod (43) and a second end of the fourth transmission rod (44) are both connected to the control device (3), and the third transmission rod ( 43) and the fourth transmission rod (44) are respectively located on different sides of the control device (3). A sealing mechanism (100) according to claim 3, wherein The end face of the first end of the second transmission rod (42) has a width of 1/3 to 2/3 of the width of the second transmission rod (42), and the first end of the third transmission rod (43) The end face width is 1/3 to 2/3 of the width of the third transmission rod (42). A sealing mechanism (100) according to claim 3, wherein a first transmission slot (110) is disposed in the first vertical frame (11), a second transmission slot (120) is disposed in the horizontal frame (12), and the second vertical frame (13) is disposed therein a third transmission slot, the first transmission rod (41) is slidably coupled to the first transmission slot (110), and the second transmission rod (42) is slidably coupled to the second transmission slot (120). The third transmission rod (43) and the fourth transmission rod (44) are both slidably coupled to the third transmission slot. A sealing mechanism (100) according to claim 5, wherein The width of the first transmission slot (110) is equal to the width of the first transmission rod (41), and the width of the second transmission slot (120) is equal to the width of the second transmission rod (42). The width of the third transmission groove is equal to the width of the third transmission rod (43). The sealing mechanism (100) of claim 1 wherein: a lifting slot (20) is disposed in the second frame (2), and the lifting rod (51) is located in the lifting slot (20) and is slidably connected to the second frame (2). The width of the lifting groove (20) is larger than the width of the lifting rod (51). The sealing mechanism (100) of claim 1 wherein: The sealing device (6) comprises a sealing strip (61) and a sealing block (62), the sealing strip (61) being located at the bottom of the second frame (2) and with the lifting rod (51) a fixed connection; the sealing block (62) is located at an end of the second frame (2) and is flush with an end of the sealant strip (61). The sealing mechanism (100) of claim 1 wherein: The control device (3) includes a handle (31) and a transmission (32), and the transmission (32) is drivingly connected to the first transmission (4) through the first fan frame (1). The handle (31) is fixedly coupled to the actuator (32).

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