A ceiling-mounted fresh air unit that is convenient for maintenance

Abstract

The present invention provides a ceiling-mounted fresh air fan convenient for maintenance, which relates to the technical field of fresh air systems and includes a fresh air fan housing. A heat exchanger is installed inside the fresh air fan housing. A maintenance cover is movably installed at the bottom end of the fresh air fan housing. The maintenance cover includes a movable maintenance cover one and a movable maintenance cover two. The movable maintenance cover one and the movable maintenance cover two move away from each other to open the fresh air fan housing, and the movable maintenance cover one and the movable maintenance cover two move towards each other to close the fresh air fan housing. A dust-proof structure is also installed inside the fresh air fan housing. A groove is provided inside the fresh air fan housing for accommodating the dust-proof structure. The dust-proof structure includes a movable plate. An adjustment structure is provided between the dust-proof structure and the maintenance cover for adjusting the inclination angle of the movable plate in the dust-proof structure.

Description

Technical Field

[0001] The present invention belongs to the technical field of fresh air systems, and particularly relates to a ceiling-mounted fresh air fan that is convenient for maintenance. Background Art

[0002] A fresh air fan is an effective air purification device that can circulate indoor air. On the one hand, it discharges the dirty air indoors to the outside, and on the other hand, it inputs the fresh air outside into the room after measures such as sterilization, disinfection, and filtration, so that the air in the room is fresh and clean at all times. With the use of the fresh air fan, due to dust accumulation in the air duct and the decline of the pipeline sealing performance, the air volume at each air outlet is uneven and the fresh air effect is poor. Therefore, professional personnel are required to check the system and adjust the air volume to eliminate potential hazards and ensure the fresh air effect. If the wiring board of the fresh air fan and the power connection are used for a long time, a large amount of dust will accumulate or the wiring will become loose due to the vibration of the fresh air fan, resulting in potential safety hazards. Therefore, cleaning should be carried out first during maintenance. The fresh air control panel is a relatively precise electrical component. Due to static electricity, it will adsorb dust or accumulate moisture during long-term use, easily causing the control panel to malfunction or component damage, and it can be replaced during maintenance. Therefore, when the above problems occur in the fresh air fan and need to be repaired, the cover of the fresh air fan needs to be opened.

[0003] At present, the inspection cover of the fresh air system is positioned by hinges and fixed by buckles. During maintenance, it is necessary to separate the fresh air fan housing and the cover plate, which is inconvenient for lifting the inspection cover. If the inspection plate is too large, during maintenance, the existing ceiling space cannot open the inspection cover due to the keel problem, and the existing filtering structure is a filter mesh cover, which is installed at the inlet and outlet of the pipeline. If it becomes blocked, the air duct needs to be disassembled before the filter mesh cover can be cleaned or replaced. Summary of the Invention

[0004] The purpose of the present invention is to provide a ceiling-mounted fresh air fan that is convenient for maintenance in order to solve the problems of the prior art.

[0005] A ceiling-mounted fresh air fan that is convenient for maintenance includes a fresh air fan housing, a heat exchanger is installed inside the fresh air fan housing, a fresh air duct, an exhaust duct, a return air duct, and a supply air duct are connected to the fresh air fan housing. Outdoor air enters the room through the fresh air duct and the heat exchanger and then enters the room through the supply air duct. Indoor air passes through the return air duct and the heat exchanger and then is discharged from the exhaust duct. An inspection cover body is movably installed at the bottom end of the fresh air fan housing. The inspection cover body includes a movable inspection cover one and a movable inspection cover two. The movable inspection cover one and the movable inspection cover two move away from each other to open the fresh air fan housing, and the movable inspection cover one and the movable inspection cover two move towards each other to close the fresh air fan housing. A dust blocking structure is also installed inside the fresh air fan housing. A groove is provided inside the fresh air fan housing for accommodating the dust blocking structure. The dust blocking structure includes a movable plate. An adjusting structure is provided between the dust blocking structure and the inspection cover body for adjusting the inclination angle of the movable plate in the dust blocking structure.

[0006] Further, a slide rail is provided on the fresh air fan housing, and sliders are provided on one side of the movable maintenance cover one and the movable maintenance cover two. The sliders are slidably connected to the slide rail, and the movable maintenance cover one and the movable maintenance cover two move along the slide rail.

[0007] Further, the dust blocking structure includes a plurality of movable plates. The movable plates are rotatably connected to the central rotating shaft. Connecting rods are connected to both ends of the central rotating shaft, and auxiliary rods are installed on the connecting rods for manually placing the dust blocking structure in the groove.

[0008] Further, a limit cover plate is provided on the groove, and the limit cover plate is connected to the fresh air fan housing by screws.

[0009] Further, a vertical rod is movably connected to the movable plate. The vertical rod is located on one side of the central rotating shaft. A plurality of limit sleeves are sleeved on the movable rod. The limit sleeves are located below the movable plate and are used to limit the rotation angle of the movable plate around the central rotating shaft. The top end of the vertical rod passes through the movable maintenance cover one and extends above the movable maintenance cover one. When the vertical rod connected to the movable maintenance cover one moves upward, the movable plate on one side of the movable maintenance cover one rotates counterclockwise around the central rotating shaft. When the vertical rod connected to the movable maintenance cover two moves upward, the movable plate on one side of the movable maintenance cover two rotates clockwise around the central rotating shaft.

[0010] Further, when the movable plate is perpendicular to the vertical rod, the distance from the bottom end of the vertical rod to the bottom end of the groove is greater than the distance from the top end of the vertical rod to the bottom end of the movable maintenance cover one.

[0011] Further, a linkage structure is provided inside the movable maintenance cover one, and the structure of the movable maintenance cover two and the structure of the movable maintenance cover one are centrosymmetric along the contact surface of the maintenance cover one and the maintenance cover two.

[0012] Further, the linkage structure includes a sphere. A displacement groove is provided inside the movable maintenance cover one for accommodating the sphere. When the movable maintenance cover one moves, the sphere moves in the displacement groove. The vertical rod passes through the sphere, and a round hole is provided in the sphere. The vertical rod is located in the round hole. A square groove is also provided inside the movable maintenance cover one for the movement of the vertical rod. The square groove is located in the middle of the displacement groove.

[0013] Further, the displacement groove is composed of a bent section and a horizontal section. When the movable maintenance cover one and the movable maintenance cover two are closed, the sphere is located at the horizontal section.

[0014] Further, a locking hole and a limiting hole are provided in the vertical rod. A locking structure is installed in the locking hole. The locking structure includes a locking rod. The bottom end of the locking rod is connected with a first downward moving rod and a second downward moving rod. The first downward moving rod and the second downward moving rod are hinged to each other. The bottom end of the locking hole is connected with a first upward moving rod and a second upward moving rod. The first upward moving rod and the second upward moving rod are hinged to each other. The first downward moving rod is hinged to the first upward moving rod, and the second downward moving rod is hinged to the second upward moving rod. A spring is installed at the hinge joint of the first downward moving rod and the second downward moving rod and the hinge joint of the first upward moving rod and the second upward moving rod. The first downward moving rod, the second downward moving rod, the first upward moving rod and the second upward moving rod are located in the limiting hole. A hemispherical hole is provided in the sphere. When the locking rod is locked, one ends of the first downward moving rod, the second downward moving rod, the first upward moving rod and the second upward moving rod are located in the hemispherical hole. A locking plate is sleeved on the locking rod. The locking plate is located above the vertical rod. The locking plate and the vertical rod are connected by a locking member.

[0015] The beneficial effects of the present invention are as follows:

[0016] The inspection cover is designed to be slid open, which can be opened even in a small space, and there is no need to separate the inspection cover from the fresh air blower. When the inspection cover is opened, it does not need to be manually supported and will not fall off, and the operation is safe and convenient;

[0017] The dust-proof structure is installed in the fresh air blower housing. The dust-proof structure prevents foreign objects from entering the fresh air blower and causing blockage, which affects ventilation. When the dust-proof structure is cleaned or replaced, there is no need to disassemble the ventilation pipe;

[0018] A linkage structure is provided between the inspection cover and the dust-proof structure, so that the flipping of the movable plate in the dust-proof structure rotates with the opening of the inspection cover, and the foreign objects adhered to the surface of the movable plate fall by gravity;

[0019] A locking structure is installed in the vertical rod to lock the vertical rod and the sphere, ensuring the stability of the movement of the vertical rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0021] Figure 1 is a schematic bottom view structure diagram of the fresh air blower housing of the present invention;

[0022] Figure 2 is a schematic internal structure diagram of the fresh air blower housing of the present invention;

[0023] Figure 3 is a schematic diagram of the inspection cover plate in the opened state of the present invention;

[0024] Figure 4It is a left - view structural schematic diagram of the fresh air fan housing of the present invention;

[0025] Figure 5 is of the present invention Figure 4 The enlarged structural schematic diagram of part A in;

[0026] Figure 6 It is a left - view structural schematic diagram of the movable plate in the open state of the maintenance cover plate of the present invention;

[0027] Figure 7 It is a left - view structural schematic diagram of the dust - blocking assembly of the present invention;

[0028] Figure 8 It is a left - view structural schematic diagram of the movable plate in the closed state of the maintenance cover plate of the present invention;

[0029] Figure 9 It is the enlarged structural schematic diagram of the displacement groove of the present invention;

[0030] Figure 10 is of the present invention Figure 6 The A - A cross - sectional view in;

[0031] Figure 11 It is a left - view structural schematic diagram of the vertical rod of the present invention;

[0032] Figure 12 It is a cross - sectional view of the sphere of the present invention;

[0033] Figure 13 It is an internal structural schematic diagram of the movable maintenance cover two of the present invention.

[0034] In the figure, the markings are: 1. Fresh air fan housing; 2. Fresh air duct; 3. Exhaust duct; 4. Movable maintenance cover one; 5. Movable maintenance cover two; 6. Return air duct; 7. Limit cover plate; 8. Air supply duct; 9. Groove; 10. Heat exchanger; 11. Displacement groove; 12. Vertical rod; 13. Square groove; 14. Sphere; 15. Central rotating shaft; 16. Movable plate; 17. Limit sleeve; 18. Slide block; 19. Slide rail; 20. Connecting rod; 21. Auxiliary rod; 22. Horizontal section; 23. Bent section; 24. First upward - moving rod; 25. Spring; 26. Locking part; 27. Locking rod; 28. Second downward - moving rod; 29. Second upward - moving rod; 30. Locking hole; 31. Limit hole; 32. Round hole; 33. Hemispherical hole; 34. Locking plate; 35. First downward - moving rod. Detailed implementation manners

[0035] Example 1

[0036] A ceiling - mounted fresh air fan convenient for maintenance, including a fresh air fan housing 1, as Figure 2As shown in the figure, a heat exchanger 10 is installed inside the fresh air fan housing 1. A fresh air duct 2, an exhaust duct 3, a return air duct 6 and a supply air duct 8 are connected to the fresh air fan housing 1. Outdoor air passes through the fresh air duct 2 and the heat exchanger 10 and then enters the room from the supply air duct 8. Indoor air passes through the return air duct 6 and the heat exchanger 10 and then is discharged from the exhaust duct 3, causing the indoor air to circulate, discharging the dirty indoor air outdoors, and sending the fresh outdoor air into the room after sterilization, disinfection, filtration, etc., to keep the indoor air fresh and clean.

[0037] If an abnormality occurs during the use of the fresh air fan, it needs to be repaired by a professional by opening the inspection cover on the fresh air fan. Therefore, for the convenience of professional maintenance, as Figures 1-5 shown, a maintenance cover body is movably installed at the bottom end of the fresh air fan housing 1. The maintenance cover body includes a movable maintenance cover one 4 and a movable maintenance cover two 5. A slide rail 19 is provided on the fresh air fan housing 1. A slider 18 is provided on one side of the movable maintenance cover one 4 and the movable maintenance cover two 5. The slider 18 is slidably connected to the slide rail 19. The movable maintenance cover one 4 and the movable maintenance cover two 5 move along the slide rail 19, and the maintenance cover body slides open to both sides. That is, the movable maintenance cover one 4 and the movable maintenance cover two 5 move away from each other to open the fresh air fan housing 1, and the movable maintenance cover one 4 and the movable maintenance cover two 5 move towards each other to close the fresh air fan housing 1. The maintenance cover body is fixed by the slide rail 19. When opened, there is no need to hold it up by hand, and the maintenance cover body will not fall off, with high safety. Moreover, the maintenance cover body is divided from one plate into two plates, and the length of the separated two plates becomes smaller, and the space occupied when opened is also smaller, so that the opening of the maintenance cover body is not restricted by the ceiling space.

[0038] Embodiment Two

[0039] On the basis of the above Embodiment One, a dust blocking structure is also installed inside the fresh air fan housing 1 to prevent dust accumulation in the pipeline, resulting in uneven air volume at the air outlet and poor fresh air effect, as Figure 2 shown, a groove 9 is provided inside the fresh air fan housing 1 for accommodating the dust blocking structure, and the internal structure of the groove 9 corresponds to the dust blocking structure, as Figure 7 shown, the dust blocking structure includes a plurality of movable plates 16. The movable plates 16 are rotatably connected to the central rotating shaft 15. The movable plates 16 rotate around the central rotating shaft 15 in the groove 9. Both ends of the central rotating shaft 15 are connected with connecting rods 20 to connect a plurality of central rotating shafts 15 into a whole. The number of corresponding movable plates 16 is set according to the sizes of the pipe orifices of the fresh air duct 2, the return air duct 6, the exhaust duct 3 and the supply air duct 8. An auxiliary rod 21 is installed on the connecting rod 20 for manually placing the dust blocking structure in the groove 9.

[0040] Specifically, a limit cover plate 7 is provided on the groove 9. The limit cover plate 7 is connected to the fresh air fan housing 1 by screws. During operation, only need to remove the limit cover plate 7 and hold the auxiliary rod 21, then the dust blocking structure can be removed for cleaning or replacement, and the operation is convenient.

[0041] In this embodiment, other structures and principles are the same as those in the first embodiment.

[0042] Embodiment Three

[0043] Based on the above-mentioned second embodiment, the dust-proof structure includes a movable plate 16, and an adjustment structure is provided between the dust-proof structure and the inspection cover body for adjusting the inclination angle of the movable plate 16 in the dust-proof structure, so as to further avoid dust accumulation in the pipeline and can preliminarily filter foreign matters in the air.

[0044] As Figure 6 shown, a vertical rod 12 is movably connected to the movable plate 16. The vertical rod 12 is located on one side of the central rotating shaft 15. The top end of the vertical rod 12 passes through the first movable inspection cover 4 and extends above the first movable inspection cover 4. Specifically, as Figure 13 shown, the structure of the second movable inspection cover 5 and the structure of the first movable inspection cover 4 are centrosymmetric along the contact surface of the first inspection cover 4 and the second inspection cover 5. When the vertical rod 12 connected to the first movable inspection cover 4 moves upward, the movable plate 16 on one side of the first movable inspection cover 4 rotates counterclockwise around the central rotating shaft 15.

[0045] As Figure 8 shown, when the vertical rod 12 connected to the second movable inspection cover 5 moves upward, the movable plate 16 on one side of the second movable inspection cover 5 rotates clockwise around the central rotating shaft 15, effectively blocking foreign matters in the air.

[0046] As Figure 6 shown, a linkage structure is provided in the first movable inspection cover 4. The linkage structure includes a sphere 14. A displacement groove 11 is provided in the first movable inspection cover 4 for accommodating the sphere 14. The vertical rod 12 passes through the sphere 14. A circular hole 32 is provided in the sphere 14. The vertical rod 12 is located in the circular hole 32. Specifically, a square groove 13 is also provided in the first movable inspection cover 4 for the movement of the vertical rod 12. The square groove 13 is located in the middle of the displacement groove 11. When the first movable inspection cover 4 moves, the sphere 14 moves in the displacement groove 11 through the vertical rod 12.

[0047] As Figure 9 shown, the displacement groove 11 is composed of a bent section 23 and a horizontal section 22. The position of the sphere 14 is restricted by the horizontal section 22 to ensure the locking of the vertical rod 12. When the first movable inspection cover 4 and the second movable inspection cover 5 are closed, the sphere 14 is located at the horizontal section 22.

[0048] In order to limit the rotation angle of the movable plate 16, a plurality of limit sleeves 17 are sleeved on the movable plate 16. The limit sleeves 17 are located below the movable plate 16 to limit the rotation angle of the movable plate 16 around the central rotating shaft 15.

[0049] In this embodiment, other components and principles are the same as those in the second embodiment.

[0050] Embodiment Four

[0051] On the basis of the above-mentioned third embodiment, in order to further lock the vertical rod 12 and the sphere 14 and facilitate the detachable connection between the vertical rod 12 and the sphere 14, as Figure 10 shown, a locking hole 30 and a limiting hole 31 are provided in the vertical rod 12, and a locking structure is installed in the locking hole 30.

[0052] Specifically, as Figures 10-12 shown, the locking structure includes a locking rod 27. A first downward moving rod 35 and a second downward moving rod 28 are connected to the bottom end of the locking rod 27. The first downward moving rod 35 and the second downward moving rod 28 are hinged to each other. A first upward moving rod 24 and a second upward moving rod 29 are connected to the bottom end of the locking hole 30. The first upward moving rod 24 and the second upward moving rod 29 are hinged to each other. The first downward moving rod 35 is hinged to the first upward moving rod 24, and the second downward moving rod 28 is hinged to the second upward moving rod 29. A spring 25 is installed at the hinge joint of the first downward moving rod 35 and the second downward moving rod 28 and the hinge joint of the first upward moving rod 24 and the second upward moving rod 29.

[0053] The first downward moving rod 35, the second downward moving rod 28, the first upward moving rod 24 and the second upward moving rod 29 are located in the limiting hole 31. A hemispherical hole 33 is provided in the sphere 14. When the locking rod 27 is locked, one ends of the first downward moving rod 35, the second downward moving rod 28, the first upward moving rod 24 and the second upward moving rod 29 are located in the hemispherical hole 33.

[0054] When the locking rod 27 is pressed down, the spring 25 is compressed, and one ends of the first downward moving rod 35, the second downward moving rod 28, the first upward moving rod 24 and the second upward moving rod 29 move into the hemispherical hole 33. On the contrary, when the downward force applied to the locking rod 27 disappears, the spring 25 returns to its original position by its elastic force, and the first downward moving rod 35, the second downward moving rod 28, the first upward moving rod 24 and the second upward moving rod 29 return into the locking rod 27.

[0055] In order to further ensure the locking of the vertical rod 12 and the sphere 14, a locking plate 34 is sleeved on the locking rod 27. The locking plate 34 is located above the vertical rod 12. The locking plate 34 and the vertical rod 12 are connected by a locking member 26. Specifically, when the locking member 26 is tightened, the locking rod 27 is pressed down. On the contrary, when the locking member 26 is loosened, the downward force applied to the locking rod 27 disappears. At this time, the vertical rod 12 moves up and down relative to the sphere 14. When the movable plate 16 is perpendicular to the vertical rod 12, the distance from the bottom end of the vertical rod 12 to the bottom end of the groove 9 is greater than the distance from the top end of the vertical rod 12 to the bottom end of the movable maintenance cover 14, so as to disassemble the dust-proof structure.

[0056] In this embodiment, the other components and principles are the same as those in the third embodiment.

[0057] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A ceiling-mounted fresh air unit convenient for maintenance, comprising a fresh air unit housing, a heat exchanger is installed inside the fresh air unit housing, a fresh air duct, an exhaust duct, a return air duct and a supply air duct are connected to the fresh air unit housing. Outdoor air passes through the fresh air duct and the heat exchanger and then enters the room through the supply air duct, and indoor air passes through the return air duct and the heat exchanger and then is discharged from the room through the exhaust duct. It is characterized in that a maintenance cover is movably installed at the bottom end of the fresh air unit housing. The maintenance cover comprises a movable maintenance cover one and a movable maintenance cover two. The movable maintenance cover one and the movable maintenance cover two move away from each other to open the fresh air unit housing, and the movable maintenance cover one and the movable maintenance cover two move towards each other to close the fresh air unit housing. A dust-proof structure is also installed inside the fresh air unit housing. A groove is provided inside the fresh air unit housing for accommodating the dust-proof structure. The dust-proof structure comprises a movable plate. An adjusting structure is provided between the dust-proof structure and the maintenance cover for adjusting the inclination angle of the movable plate in the dust-proof structure. A slide rail is provided on the fresh air unit housing. Sliders are provided on one side of the movable maintenance cover one and the movable maintenance cover two. The sliders are slidably connected to the slide rail, and the movable maintenance cover one and the movable maintenance cover two move along the slide rail. The dust-proof structure comprises a plurality of movable plates. The movable plates are rotatably connected to a central rotating shaft. Connecting rods are connected to both ends of the central rotating shaft. An auxiliary rod is installed on the connecting rod for manually placing the dust-proof structure in the groove.

2. The ceiling-mounted fresh air unit convenient for maintenance according to claim 1, It is characterized in that a limit cover plate is provided on the groove, and the limit cover plate is connected to the fresh air unit housing by screws.

3. The ceiling-mounted fresh air unit convenient for maintenance according to claim 1, It is characterized in that a vertical rod is movably connected to the movable plate. The vertical rod is located on one side of the central rotating shaft. A plurality of limit sleeves are sleeved on the movable rod. The limit sleeves are located below the movable plate for limiting the rotation angle of the movable plate around the central rotating shaft. The top end of the vertical rod passes through the movable maintenance cover one and extends above the movable maintenance cover one. When the vertical rod connected to the movable maintenance cover one moves upward, the movable plate on the side of the movable maintenance cover one rotates counterclockwise around the central rotating shaft. When the vertical rod connected to the movable maintenance cover two moves upward, the movable plate on the side of the movable maintenance cover two rotates clockwise around the central rotating shaft.

4. The ceiling-mounted fresh air unit convenient for maintenance according to claim 3, It is characterized in that when the movable plate is perpendicular to the vertical rod, the distance from the bottom end of the vertical rod to the bottom end of the groove is greater than the distance from the top end of the vertical rod to the bottom end of the movable maintenance cover one.

5. The ceiling-mounted fresh air unit convenient for maintenance according to claim 3, It is characterized in that a linkage structure is provided inside the movable maintenance cover one. The structure of the movable maintenance cover two and the structure of the movable maintenance cover one are centrosymmetric along the contact surface of the maintenance cover one and the maintenance cover two.

6. The ceiling-mounted fresh air unit convenient for maintenance according to claim 5, It is characterized in that The linkage structure includes a sphere. A displacement groove is provided inside the first movable inspection cover for accommodating the sphere. When the first movable inspection cover moves, the sphere moves within the displacement groove. The vertical rod passes through the sphere. A circular hole is provided inside the sphere, and the vertical rod is located within the circular hole. A square groove is also provided inside the first movable inspection cover for the movement of the vertical rod, and the square groove is located in the middle of the displacement groove.

7. The ceiling-mounted fresh air blower for convenient maintenance according to claim 6, characterized in that the displacement groove is composed of a bent section and a horizontal section. When the first movable inspection cover and the second movable inspection cover are closed, the sphere is located at the horizontal section.

8. The ceiling-mounted fresh air blower for convenient maintenance according to claim 6, characterized in that a locking hole and a limiting hole are provided inside the vertical rod. A locking structure is installed inside the locking hole. The locking structure includes a locking rod. The bottom end of the locking rod is connected with a first downward moving rod and a second downward moving rod. The first downward moving rod and the second downward moving rod are hinged to each other. The bottom end of the locking hole is connected with a first upward moving rod and a second upward moving rod. The first upward moving rod and the second upward moving rod are hinged to each other. The first downward moving rod is hinged to the first upward moving rod, and the second downward moving rod is hinged to the second upward moving rod. A spring is installed at the hinge joint of the first downward moving rod and the second downward moving rod and the hinge joint of the first upward moving rod and the second upward moving rod. The first downward moving rod, the second downward moving rod, the first upward moving rod and the second upward moving rod are located within the limiting hole. A hemispherical hole is provided inside the sphere. When the locking rod is locked, one ends of the first downward moving rod, the second downward moving rod, the first upward moving rod and the second upward moving rod are located within the hemispherical hole. A locking plate is sleeved on the locking rod, and the locking plate is located above the vertical rod. The locking plate and the vertical rod are connected through a locking member.

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