Rod assembly and vacuum cleaner

Abstract

The utility model discloses a rod assembly and a vacuum cleaner. The rod assembly comprises a lower support, an upper support, a locking device, a telescopic pipe, a pair of foot supports and a pair of connecting rods, wherein the upper support is movably arranged on the lower support in the longitudinal direction between a first position and a second position, the locking device locks the upper support at the first position or the second position, and the telescopic pipe is supported on the upper support and / or the lower support. The telescopic pipe is in fluid communication with the upper pipe connector of the upper bracket and the lower pipe connector of the lower bracket; each foot support is provided with a first end hinged to the lower support and a second end hinged to the corresponding connecting rod. Each connecting rod is provided with an upper end part hinged to the upper bracket and a lower end part hinged to the corresponding second end part; when the upper bracket is located at the first position, the second end part is located above the first end part, and the pair of foot supports and the pair of connecting rods are folded at the upper bracket and the lower bracket; when in the second position, the second end part is positioned behind the first end part, and the pair of foot supports and the pair of connecting rods are unfolded towards the rear parts of the upper bracket and the lower bracket; a vacuum cleaner includes a rod assembly.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning equipment, and in particular to a rod assembly and a vacuum cleaner. Background Art

[0002] A vacuum cleaner generally includes a floor brush that moves along the ground and sucks dust, a vacuum cleaner main unit equipped with a suction motor and a dust collecting device, and a rod assembly connected between the vacuum cleaner main unit and the floor brush, on which a through pipe connecting the floor brush and the vacuum cleaner main unit is installed; when performing cleaning operations, the operator holds the vacuum cleaner main unit and pushes the floor brush back and forth on the ground through the rod assembly to clean the floor; when the vacuum cleaner is stored, since the vacuum cleaner main unit is heavy and located on the upper side of the rod assembly, the center of gravity of the vacuum cleaner is relatively high, and it is easy to fall down due to unstable center of gravity when leaning against a wall. In order to stabilize the vacuum cleaner, a special bracket for supporting the vacuum cleaner is required. Utility Model Content

[0003] Based on the above technical problems, the purpose of the present application is to provide a rod assembly that lowers the center of gravity when stored and is convenient to store, and a vacuum cleaner equipped with the rod assembly.

[0004] In order to achieve the above objectives, in a first aspect, the present application provides a rod assembly for a vacuum cleaner, the rod assembly comprising:

[0005] A lower bracket, wherein a lower pipe connector is provided at the lower portion of the lower bracket,

[0006] An upper bracket is movably arranged on the lower bracket between a first position and a second position in a longitudinal direction, and an upper pipe connector is arranged on the upper portion of the upper bracket;

[0007] A locking device configured to lock the upper bracket at the first position or the second position;

[0008] A telescopic pipe, supported on the upper bracket and / or the lower bracket and connected to the upper pipe connector and the lower pipe connector in an airflow manner;

[0009] a pair of foot supports, each of the foot supports having a first end and a second end, each of the first ends being hinged to the lower bracket, and

[0010] A pair of connecting rods, wherein the upper end of each connecting rod is hinged to the upper bracket, and the lower end of each connecting rod is hinged to the corresponding second end;

[0011] Wherein, when the upper bracket is in the first position, the second end is located above the first end, and the pair of foot supports and the pair of connecting rods are retracted at the upper bracket and the lower bracket; when the upper bracket is in the second position, the second end is located behind the first end, and the pair of foot supports and the pair of connecting rods are unfolded toward the rear of the upper bracket and the lower bracket and each of the foot supports forms an angle of 10-80° with the corresponding connecting rod.

[0012] In the technical solution of the first aspect of the present application, a linkage mechanism composed of an upper bracket, a lower bracket, a pair of connecting rods and a pair of foot supports of the rod assembly facilitates lowering the center of gravity and reducing the volume of the entire machine when the vacuum cleaner is stored, and no additional accessories are required to support the vacuum cleaner to remain upright, thereby increasing the convenience and stability of storage.

[0013] In the technical solution of the first aspect above, in some specific implementations, the pair of foot supports are constructed to be distributed in an "eight" shape when the upper bracket is in the second position.

[0014] In the technical solution of the first aspect mentioned above, in some specific embodiments, the locking device includes a lock buckle which is arranged on the lower bracket and can be manipulated to move, and a first lock slot and a second lock slot which are arranged on the upper bracket, and the lock buckle includes a manipulation part and a pin part; when the upper bracket is in the first position, the pin part engages with the first lock slot; when the upper bracket is in the second position, the pin part engages with the second lock slot.

[0015] In the technical solution of the first aspect above, in some specific implementations, the lock buckle is supported on the upper bracket by a spring.

[0016] In the technical solution of the first aspect above, in some specific embodiments, the upper bracket has a top end surface, and the upper pipe connector is arranged to be lower than the top end surface.

[0017] In the technical solution of the first aspect above, in some specific embodiments, a slide groove extending in the longitudinal direction is defined on the lower bracket, and the upper bracket slides along the slide groove when moving between the first position and the second position.

[0018] In the technical solution of the first aspect above, in some specific implementations, the slide groove is a T-shaped groove.

[0019] In the technical solution of the first aspect mentioned above, in some specific embodiments, the lower bracket includes a first front side wall and a first rear side wall opposite to each other, a lower cavity extending longitudinally is provided between the first front side wall and the first rear side wall, a pair of notches is provided at the lower portion of the first rear side wall, and the pair of notches are communicated with the lower cavity; when the upper bracket is in the first position, the pair of foot supports are accommodated in the pair of notches, and part of the pair of connecting rods are located in the lower cavity.

[0020] In the technical solution of the first aspect mentioned above, in some specific embodiments, the upper bracket includes a second front side wall and a second rear side wall that are opposite to each other, and a pair of upper cavities extending longitudinally are provided between the second front side wall and the second rear side wall, and each of the connecting rods is partially located in the corresponding upper cavity; when the upper bracket is in the first position, the upper cavity intersects with the lower cavity up and down.

[0021] In a second aspect, the present application provides a vacuum cleaner, comprising:

[0022] The vacuum cleaner host comprises a housing provided with an air inlet short pipe, a suction motor mounted on the housing, and a dust collection container;

[0023] A floor brush, which has a suction port at the bottom and is configured to be movable along the floor, and a conversion joint connected to the suction port in airflow communication is provided at the rear of the floor brush; and

[0024] As in the rod assembly described in the technical solution of the first aspect, the upper tube connector is engaged with the air inlet short tube, and the lower tube connector is engaged with the adapter. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of a three-dimensional exploded structure of a rod assembly provided in an embodiment of the present application;

[0026] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the upper bracket in FIG.

[0027] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure of the lower bracket in FIG.

[0028] Figure 4 for Figure 1 A schematic structural diagram of an upper bracket of a middle rod assembly in a first position;

[0029] Figure 5 for Figure 4 A local enlarged schematic diagram of the middle A;

[0030] Figure 6 for Figure 1 A schematic diagram of a three-dimensional structure in which the upper bracket of the rod assembly is in a second position;

[0031] Figure 7 for Figure 1 A schematic diagram of a structure in which an upper bracket of a rod assembly switches between a first position and a second position;

[0032] Figure 8 For installation Figure 4 A schematic diagram of the three-dimensional structure of a vacuum cleaner with a rod assembly in a first position;

[0033] Fig. 9 For installation Figure 6 Schematic diagram of the three-dimensional structure of a vacuum cleaner with a rod assembly in a second position.

[0034] Wherein: 10, rod assembly; 1, lower bracket; 11, lower pipe connector; 12, slide groove; 13, first front side wall; 14, first rear side wall; 15, lower cavity; 16, notch; 2, upper bracket; 21, upper pipe connector; 22, second front side wall; 23, second rear side wall; 24, upper cavity; 25, top end surface; 3, telescopic tube; 4, locking device; 41, lock; 411, pin; 412, handle Control unit; 42. first locking slot; 43. second locking slot; 44. spring; 5. foot support; 51. first end; 52. second end; 6. connecting rod; 61. upper end; 62. lower end; 20. vacuum cleaner main unit; 71. shell; 711. short air inlet pipe; 72. suction motor; 73. dust collection container; 30. floor brush; 81. suction port; 82. adapter; 9. locking mechanism; 100. vacuum cleaner. DETAILED DESCRIPTION

[0035] To describe the technical content, structural features, achieved purpose and effect of the utility model in detail, the technical scheme in the embodiment of the present application will be described below in conjunction with the drawings in the embodiment of the present application. Obviously, the described embodiment is only a part of the embodiment of the present application, rather than all the embodiments. In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the utility model. However, various exemplary embodiments may also be implemented without these specific details or in the case of one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but not necessarily exclusive. For example, without departing from the concept of the utility model, the specific shape, structure and characteristics of the exemplary embodiment may be used or implemented in another exemplary embodiment.

[0036] The present application provides a rod assembly for a vacuum cleaner, such as Figure 1As shown, the rod assembly 10 includes a lower bracket 1, an upper bracket 2, a telescopic tube 3 and a support mechanism that can be supported behind the lower bracket 1 and the upper bracket 2. The upper bracket 2 is configured to be movably arranged on the lower bracket 1 between a first position and a second position in the longitudinal direction.

[0037] like Figure 1-3 As shown, the lower bracket 1 extends in the longitudinal direction, and a lower pipe connector 11 is provided at its lower portion; the upper bracket 2 extends in the longitudinal direction, and an upper pipe connector 21 is provided at its upper portion; the lower pipe connector 11 is connected to the floor brush of the vacuum cleaner, and the upper pipe connector 21 is connected to the vacuum cleaner main unit of the vacuum cleaner, and the upper bracket 2 and the lower bracket 1 connect the vacuum cleaner main unit and the floor brush to form a cleaning whole to clean the surface to be cleaned.

[0038] In the embodiment of the present application, the upper tube connector 21 and the lower tube connector 11 have a distance in the longitudinal direction, and the distance is greater when the upper bracket 2 is in the first position than when the upper bracket 2 is in the second position.

[0039] The lower bracket 1 is defined with a slide groove 12 extending in the longitudinal direction, and the slide groove 12 cooperates with the upper bracket 2 so that the upper bracket 2 moves back and forth along the slide groove 12 when moving between the first position and the second position; the slide groove 12 cooperates with the upper bracket 2 to limit the moving direction of the upper bracket 2, avoids the upper bracket 2 from deflecting during the movement, and improves the stability of the rod assembly 10 during cleaning. In the embodiment of the present application, the slide groove 12 is a T-shaped groove.

[0040] A locking device 4 is also provided between the upper bracket 2 and the lower bracket 1, and the locking device 4 is used to lock the upper bracket 2 in the first position or the second position. The locking device 4 includes a lock buckle 41 provided on the lower bracket 1 and capable of being manipulated and moved, and a first lock groove 42 and a second lock groove 43 provided on the upper bracket 2, and the lock buckle 41 can be matched with the first lock groove 42 and the second lock groove 43 respectively.

[0041] like Figure 4-6 As shown, the lock buckle 41 includes a pin portion 411 respectively matched with the first lock groove 42 and the second lock groove 43 and a control portion 412 for controlling the pin portion 411; when the upper bracket 2 is in the first position, the pin portion 411 is embedded in the first lock groove 42 to engage with the first lock groove 42, preventing the upper bracket 2 from moving back and forth relative to the lower bracket 1, so that the upper bracket 2 remains in the first position; when the upper bracket 2 is in the second position, the pin portion 411 is embedded in the second lock groove 43 to engage with the second lock groove 43, preventing the upper bracket 2 from moving back and forth, so that the upper bracket 2 remains in the second position.

[0042] like Figure 7As shown, when the upper bracket 2 needs to switch between the first position and the second position, the pin portion 411 is operated by the control portion 412 so that the pin portion 411 is disengaged from the first locking groove 42 or the second locking groove 43, thereby unlocking the upper bracket 2 and the lower bracket 1. At this time, the upper bracket 2 can switch between the first position and the second position relative to the lower bracket 1. Figure 1 As shown, the lock buckle 41 is supported on the upper bracket 2 by a spring 44 , and the spring 44 makes the operating part 412 bounce up when there is no external force pressing, so as to reset the operating part 412 .

[0043] like Figure 4 , 6 As shown, the telescopic tube 3 is supported on the upper bracket 2 and / or the lower bracket 1, and is accommodated inside the upper bracket 2 and the lower bracket 1. The telescopic tube 3 is connected to the upper pipe joint 2 and the lower pipe connector 11 in an airflow manner, so that the suction port on the floor brush of the vacuum cleaner is fluidly connected to the vacuum cleaner main body through the telescopic tube 3, and the suction force of the vacuum cleaner main body can be loaded to the suction port, and the suction port transports the dust on the surface to be cleaned into the vacuum cleaner main body through the telescopic tube 3. The telescopic tube 3 is a spring steel wire hose assembly with variable length. When the upper bracket 2 moves between the first position and the second position relative to the lower bracket 1, the telescopic tube 3 is extended or shortened in the upper bracket 2 and the lower bracket 1 along with the position of the upper bracket 2.

[0044] like Figure 4 , 6 As shown in FIGS. 7 and 8 , the support mechanism is configured to be stored on the upper bracket 2 and the lower bracket 1 when the upper bracket 2 is in the first position, and to be unfolded behind the upper bracket 2 and the lower bracket 1 when the upper bracket 2 is in the second position to support the upper bracket 2 and the lower bracket 1.

[0045] The supporting mechanism includes a pair of foot supports 5 and a pair of connecting rods 6, each foot support 5 has a first end 51 and a second end 52, and each first end 51 is hinged to the lower bracket 1, so that the foot support 5 can rotate relative to the lower bracket 1. Each foot support 5 is equipped with a connecting rod 6, the upper end 61 of each connecting rod 6 is hinged to the upper bracket 2, and the lower end 62 of each connecting rod 6 is hinged to the second end 52 of the corresponding foot support 5.

[0046] like Figure 1 As shown, in the embodiment of the present application, the upper end 61 of each connecting rod 6 and the upper bracket 2, the lower end 62 of each connecting rod 6 and the corresponding second end 52 of the foot support 5, and the first end 51 of each foot support 5 and the lower bracket 1 are respectively hinged through a rotating shaft, so that the connecting rod 6 can rotate relative to the upper bracket 2, the foot support 5 can rotate relative to the lower bracket 1, and the connecting rod 6 and the foot support 5 can rotate relative to each other.

[0047] Continue to refer to Figure 4-Figure 7When the upper bracket 2 is in the first position, the pair of foot supports 5 and the pair of connecting rods 6 are folded on the upper bracket 2 and the lower bracket 1, and the second end 52 of each foot support 5 is located above the first end 51; when the upper bracket 2 is in the second position, the pair of foot supports 5 and the pair of connecting rods 6 are deployed toward the rear of the upper bracket 2 and the lower bracket 1, and each foot support 5 forms an angle α of 10°-80° with the corresponding connecting rod 6, and the second end 52 of each foot support 5 is located behind the first end 51. The pair of foot supports 5 are hinged to the lower bracket 1 relatively to the left and right, and when the pair of foot supports 5 are deployed behind the lower bracket 1, the pair of foot supports 5 are distributed in an "eight" shape, thereby increasing the stability of the pair of foot supports 5 deployed when the upper bracket 2 is in the second position to support the entire rod assembly 10.

[0048] The lower bracket 1 includes a first front side wall 13 and a first rear side wall 14 which are opposite to each other. A lower cavity 15 extending in the longitudinal direction is provided between the first front side wall 13 and the first rear side wall 14. The lower cavity 15 is configured to accommodate at least part of the upper bracket 2 when the upper bracket 2 is in the second position. A pair of notches 16 are provided at the lower portion of the first rear side wall 14. The pair of notches 16 are connected to the lower cavity 15, and each notch 16 can be matched with a foot support 5.

[0049] The upper bracket 2 includes a second front side wall 22 and a second rear side wall 23 which are arranged opposite to each other. An upper cavity 24 extending in the longitudinal direction is defined between the second front side wall 22 and the second rear side wall 23 . At least part of a pair of connecting rods 6 can be accommodated in the upper cavity 24 . When the upper bracket 2 moves from the second position to the first position, the upper bracket 2 drives the pair of hinged connecting rods 6 to move upward relative to the lower bracket 1 in the longitudinal direction, and the upper cavity 24 and the lower cavity 15 intersect and communicate with each other. At this time, the pair of connecting rods 6 are retracted into the upper cavity 24 and the lower cavity 15 that are interconnected during the movement, and the pair of foot supports 5 are respectively accommodated in a pair of notches 16; when the upper bracket 2 is in the process of moving from the first position to the second position, the upper bracket 2 moves downward relative to the lower bracket 1 in the longitudinal direction, and the upper bracket 2 extends into the lower cavity 15. The pair of connecting rods 6 hinged on the upper bracket 2 are gradually pushed out of the upper cavity 24 and the lower cavity 15, and at the same time, the pair of foot supports 5 connected to the east by the pair of connecting rods 6 are unfolded to the rear of the lower bracket 1.

[0050] like Figure 8 , 9As shown, the vacuum cleaner 100 includes a vacuum cleaner main unit 20, a floor brush 30 and a rod assembly 10. The vacuum cleaner main unit 20 includes a shell 71 provided with an air inlet short pipe 711, a suction motor 72 and a dust collecting container 73 installed on the shell 71. The air inlet short pipe 711, the dust collecting container 73 and the suction motor 72 are fluidically connected in sequence. The suction motor 72 loads suction force on the air inlet short pipe 711, so that the air carrying dust enters the dust collecting container 73, and the dust collecting container 73 filters the air and blocks and stores the dust. A dust suction port 81 is provided at the lower part of the floor brush 30 and is constructed to be able to move along the ground. A adapter 82 is provided at the rear part of the floor brush 30 and is connected to the dust suction port 81 in airflow communication; the upper pipe connector 21 of the rod assembly 10 is engaged with the short air inlet pipe 711, and the lower pipe joint 11 is engaged with the adapter 82. The telescopic tube 3 connects the dust suction port 81 with the short air inlet pipe 711. When the suction motor 72 is working, the dust suction port 81 sucks the surface to be cleaned.

[0051] like Figure 2 As shown, the top of the upper bracket 2 has a top surface 25 , and the upper pipe joint 21 is arranged below the top surface 25 to facilitate the installation of the vacuum cleaner host 20 .

[0052] Continue to refer to Figure 8 and Fig. 9 A locking mechanism 9 is provided between the upper tube connector 21 and the air inlet short tube 711 and between the lower tube connector 11 and the adapter 82. The vacuum cleaner main unit 20 is detachably mounted on the top of the upper bracket 2 through the locking mechanism 9, and the floor brush 30 is detachably mounted on the bottom of the lower bracket 1 through the locking mechanism 9. When the locking mechanism 9 is locked, the vacuum cleaner main unit 20 is fixed on the upper bracket 2, and the floor brush 30 is fixed on the lower bracket 1. The vacuum cleaner main unit 20 and the floor brush 30 are not easily separated from the rod assembly 10. The operator can operate the locking mechanism 9 to unlock the vacuum cleaner main unit 20 and the floor brush 30 from the rod assembly 10, thereby separating from the rod assembly 10. The locking mechanism 9 has a simple structure and is convenient for disassembling and assembling the vacuum cleaner 100.

[0053] When cleaning is required, the control portion 412 of the lock buckle 41 is pressed to lift the pin portion 411 and pull the upper bracket 2 upward. At this time, the upper pipe connector 21 is away from the lower pipe connector 11. When the pin portion 411 is inserted into the first locking groove 42, the upper bracket 2 is kept in the first position. At this time, the foot support 5 and the connecting rod 6 are retracted in the upper bracket 2 and the lower bracket 1. The extended rod assembly 10 makes it easier for the operator to hold the vacuum cleaner main unit 20 and clean the surface to be cleaned by pushing the floor brush 30. After the cleaning operation is completed, Turn off the suction motor 72, press the control part 412 to lift the pin part 411 from the first locking groove 42, and press the vacuum cleaner main unit 20 to move the upper bracket 2 downward. At this time, the upper tube connector 21 is close to the lower tube connector 11. When the pin part 411 is inserted into the second locking groove 43, the upper bracket 2 remains in the second position, the shortened rod assembly 10 lowers the center of gravity of the vacuum cleaner 100, and a pair of foot supports 5 are unfolded behind the lower bracket 1. The vacuum cleaner 100 can be stably supported on the ground by the unfolded support mechanism.

[0054] The utility model uses a linkage mechanism composed of an upper bracket, a lower bracket, a pair of connecting rods and a pair of foot supports of the rod assembly to facilitate lowering the center of gravity and reducing the volume of the entire machine when the vacuum cleaner is stored, and no additional accessories are needed to support the vacuum cleaner to keep it upright, thereby increasing the convenience and stability of storage.

[0055] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and the scope of protection required by the utility model is defined by the attached claims, description and their equivalents.

Claims

1. A rod assembly for a vacuum cleaner, characterized in that The rod assembly comprises: A lower bracket, wherein a lower pipe connector is provided at the lower portion of the lower bracket; An upper bracket is movably arranged on the lower bracket between a first position and a second position in a longitudinal direction, and an upper pipe connector is arranged on the upper portion of the upper bracket; A locking device configured to lock the upper bracket at the first position or the second position; A telescopic pipe, supported on the upper bracket and / or the lower bracket and connected to the upper pipe connector and the lower pipe connector in an airflow manner; a pair of foot supports, each of the foot supports having a first end and a second end, each of the first ends being hinged to the lower bracket, and A pair of connecting rods, wherein the upper end of each connecting rod is hinged to the upper bracket, and the lower end of each connecting rod is hinged to the corresponding second end; Wherein, when the upper bracket is in the first position, the second end is located above the first end, and the pair of foot supports and the pair of connecting rods are retracted at the upper bracket and the lower bracket; when the upper bracket is in the second position, the second end is located behind the first end, and the pair of foot supports and the pair of connecting rods are unfolded toward the rear of the upper bracket and the lower bracket and each of the foot supports forms an angle of 10-80° with the corresponding connecting rod.

2. The rod assembly according to claim 1, characterized in that The pair of foot supports are constructed to be distributed in an "eight" shape when the upper bracket is in the second position.

3. The rod assembly according to claim 1, characterized in that The locking device includes a lock buckle which is arranged on the lower bracket and can be manipulated to move, and a first lock slot and a second lock slot which are arranged on the upper bracket. The lock buckle includes a manipulation portion and a pin portion. When the upper bracket is in the first position, the pin portion engages with the first lock slot. When the upper bracket is in the second position, the pin portion engages with the second lock slot.

4. The rod assembly according to claim 3, characterized in that The lock buckle is supported on the upper bracket through a spring.

5. The rod assembly according to claim 1, characterized in that The upper bracket has a top end surface, and the upper pipe connector is arranged to be lower than the top end surface.

6. The rod assembly according to claim 1, characterized in that The lower bracket is defined with a slide groove extending in the longitudinal direction, and the upper bracket slides along the slide groove when moving between the first position and the second position.

7. The rod assembly according to claim 6, characterized in that The slide groove is a T-shaped groove.

8. The rod assembly according to claim 7, characterized in that The lower bracket includes a first front side wall and a first rear side wall which are opposite to each other, and a lower cavity extending longitudinally is provided between the first front side wall and the first rear side wall, and a pair of notches are provided at the lower portion of the first rear side wall, and the pair of notches are communicated with the lower cavity; when the upper bracket is in the first position, the pair of foot supports are accommodated in the pair of notches, and the pair of connecting rods are partially located in the lower cavity.

9. The rod assembly according to claim 8, characterized in that The upper bracket includes a second front side wall and a second rear side wall that are opposite to each other, and a pair of upper cavities extending longitudinally are provided between the second front side wall and the second rear side wall, and each of the connecting rods is partially located in the corresponding upper cavity; when the upper bracket is in the first position, the upper cavity intersects with the lower cavity up and down.

10. A vacuum cleaner, characterized in that: include: The vacuum cleaner host comprises a housing provided with an air inlet short pipe, a suction motor mounted on the housing, and a dust collection container; A floor brush, the lower part of which is provided with a suction port and is configured to be movable along the ground, and the rear part of the floor brush is provided with an adapter connected to the suction port in airflow; as well as According to the rod assembly as described in any one of claims 1 to 9, the upper pipe connector is engaged with the air inlet short pipe, and the lower pipe connector is engaged with the adapter.

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