Movable fan

Abstract

The utility model provides a movable fan which comprises an axial flow fan, a U-shaped frame is arranged at the bottom of the axial flow fan, the two U-shaped frames are fixedly connected with column rods, the upper ends of the column rods are rotationally connected with the axial flow fan, the upper ends of the column rods are fixedly connected with lug plates, a shielding cylinder is installed on the face, away from the axial flow fan, of each lug plate, and the shielding cylinders are connected with the column rods. A nut is fixedly connected to the middle position in the shielding barrel, a stud used for limiting the relative position of the lug plate and the axial flow fan is in threaded connection with the interior of the nut, a first shielding ring is arranged on the side, facing the handle, of the nut, and a second shielding ring is arranged on the side, deviating from the first shielding ring, of the nut; and the distance between the first shielding ring and the second shielding ring is half of the length of the shielding cylinder. The threaded connection structure has the beneficial effect that small sundries are prevented from entering the threaded connection part.

Description

Technical Field

[0001] The utility model relates to a mobile fan, belonging to the technical field of fans. Background Art

[0002] To facilitate the movement of the axial flow fan, a bracket is usually installed on the axial flow fan, wherein the bracket is rotatably connected to the axial flow fan in the form of a rotating shaft, thereby facilitating the adjustment of the direction of the axial flow fan. To facilitate limiting the direction of the axial flow fan, a limit screw needs to be installed at the end of the bracket. By turning the limit screw, one end of the limit screw is tightly fitted with the surface of the axial flow fan, thereby preventing the axial flow fan from rotating around the rotating shaft and limiting the direction of the axial flow fan. However, the limit screw is in an exposed state. During use, small debris can easily enter the threaded hole that matches the limit screw, resulting in obstruction of the turning of the limit screw. It is time-consuming and laborious to clean up the small debris that enters the contact area between the limit screw and the threaded hole. Therefore, it is necessary to design a mobile fan that can prevent small debris from entering the threaded connection area. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a mobile fan to solve the problems raised in the above-mentioned background technology. The utility model prevents small debris from entering the threaded connection part.

[0004] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a mobile fan, including an axial flow fan, a U-shaped frame is provided at the bottom of the axial flow fan, two of the U-shaped frames are connected and fixed with a column rod, the upper end of the column rod is rotatably connected to the axial flow fan, the upper end of the column rod is connected and fixed with an ear plate, a side of the ear plate facing away from the axial flow fan is equipped with a shielding cylinder, a nut is connected and fixed at the middle position in the shielding cylinder, a stud for limiting the relative position of the ear plate and the axial flow fan is connected and fixed by a thread in the nut, a handle is connected and fixed to one end of the stud away from the axial flow fan, a first shielding ring is provided on the side of the nut facing the handle, the first shielding ring is sleeved on the stud and connected and fixed to the stud, the first shielding ring is slidably installed in the shielding cylinder, a second shielding ring is provided on the side of the nut facing away from the first shielding ring, the second shielding ring is slidably installed in the shielding cylinder, the second shielding ring is sleeved on the stud and connected and fixed to the stud, and the spacing between the first shielding ring and the second shielding ring is half the length of the shielding cylinder.

[0005] Furthermore, a connecting plate is fixedly connected to one end of the stud away from the handle, and the connecting plate is slidably installed in the shielding tube. A rubber head in contact with the surface of the axial flow fan is adhered to one side of the connecting plate away from the stud.

[0006] Furthermore, four universal brake wheels are evenly installed at the bottom of the U-shaped frame, and the universal brake wheels are connected and fixed to the U-shaped frame by two connecting screws.

[0007] Furthermore, the outer surface of the U-shaped frame is recessed in an area directly above the universal brake wheel to form a slot, in which an insert block is inserted, and the lower surface of the insert block is provided with two screw holes that cooperate with the connecting screws, and the bottom of the slot is provided with two small holes, and the connecting screws pass through the holes and small holes on the universal brake wheel and are threadedly connected in the screw holes.

[0008] Furthermore, the slot has a rectangular cross section, and the plug block has a rectangular cross section.

[0009] Furthermore, a circular opening is provided at the position where the ear plate is mounted on the shielding tube, and one end of the shielding tube is fixed in the circular opening.

[0010] Furthermore, a straight tube is connected and fixed to the outer surface of the U-shaped frame, and the straight tube is inclined in a direction away from the axial flow fan. A round rod is inserted in the straight tube, and one end of the round rod that is outside the straight tube is connected and fixed to a gripping rod. An outer threaded portion of one end of the straight tube away from the U-shaped frame is connected to a positioning screw for limiting the relative position of the straight tube and the round rod. Two reinforcing ribs are connected and fixed to the outer surface of one end of the straight tube close to the U-shaped frame, and the other end of the reinforcing rib is connected and fixed to the U-shaped frame.

[0011] Furthermore, both ends of the axial flow fan are connected and fixed with sleeve rings, and the back sides of the two sleeve rings are provided with rings, and the rings are connected and fixed with the sleeve rings by multiple bolts, and a protective net is fixed inside the rings.

[0012] The beneficial effects of the utility model.

[0013] 1. The connection part between the stud and the nut is hidden in the space formed by the first shielding ring, the second shielding ring and the shielding tube. When the stud is screwed, the first shielding ring and the second shielding ring slide in the shielding tube, preventing small debris from entering the nut at will without affecting the screwing of the stud, thus eliminating the trouble of cleaning small debris in the thread pattern.

[0014] 2. When connecting the universal brake wheel and the U-shaped frame with the connecting screws, insert the plug into the slot to assemble the plug and the U-shaped frame. Pass the connecting screws through the holes and small holes on the universal brake wheel and then screw them into the screw holes to complete the installation of the universal brake wheel. When the screw holes are damaged due to wrong threads or other reasons, replace the plug without replacing the entire U-shaped frame, thereby reducing maintenance costs. At the same time, there is no need to open screw holes on the U-shaped frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objectives and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings.

[0016] Figure 1The utility model is a structural schematic diagram of a mobile fan.

[0017] Figure 2 This is an enlarged view of point A in a mobile fan of the utility model.

[0018] Figure 3 The utility model is a schematic diagram of the assembly of nuts, studs, shielding tubes and ear plates in a mobile fan.

[0019] Figure 4 The utility model is a three-dimensional diagram of a middle ear plate of a mobile fan.

[0020] Figure 5 The utility model is a schematic diagram of the assembly of an insert block, connecting screws and a U-shaped frame in a mobile fan.

[0021] In the figure: 1-axial flow fan, 2-ring, 3-protective net, 4-bolt, 5-column, 6-universal brake wheel, 7-insert block, 8-U-frame, 9-reinforcement rib, 10-straight pipe, 11-positioning screw, 12-round rod, 13-grip rod, 14-handle, 15-stud, 16-first shielding ring, 17-ear plate, 18-shielding tube, 19-rubber head, 20-second shielding ring, 21-nut, 22-round mouth, 23-connecting screw, 24-small hole, 25-screw hole. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] See also Figure 1 The utility model provides a technical solution: a mobile fan, including an axial flow fan 1, both ends of the axial flow fan 1 are connected and fixed with collars, the backs of the two collars are provided with rings 2, the rings 2 are connected and fixed with the collars by multiple bolts 4, a protective net 3 is fixed inside the ring 2, and the protective net 3 realizes the protection of the internal blades and other components of the axial flow fan 1.

[0024] See also Figure 1 , Figure 2 , Figure 3 and Figure 4A U-shaped frame 8 is provided at the bottom of the axial flow fan 1, and both ends of the U-shaped frame 8 are connected and fixed with a column 5, and the upper end of the column 5 is rotatably connected to the axial flow fan 1, and the upper end of the column 5 is connected and fixed with an ear plate 17, and a shielding cylinder 18 is installed on the side of the ear plate 17 away from the axial flow fan 1, that is, a circular opening 22 is opened at the position where the shielding cylinder 18 is installed on the ear plate 17, so that one end of the shielding cylinder 18 is fixed in the circular opening 22, thereby improving the stability of the connection between the shielding cylinder 18 and the ear plate 17, and the shielding cylinder 18 is connected and fixed at the middle position inside the shielding cylinder 18 There is a nut 21, and the inner thread of the nut 21 is connected to a stud 15 for limiting the relative position of the ear plate 17 and the axial flow fan 1, the end of the stud 15 away from the axial flow fan 1 is connected and fixed with a handle 14, the end of the stud 15 away from the handle 14 is connected and fixed with a connecting plate, the connecting plate is slidably installed in the shielding tube 18, and the side of the connecting plate away from the stud 15 is adhered with a rubber head 19 in contact with the surface of the axial flow fan 1, and the rubber head 19 increases the friction coefficient between the stud 15 and the surface of the axial flow fan 1.

[0025] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The first shielding ring 16 is provided on the side of the nut 21 facing the handle 14, and the first shielding ring 16 is sleeved on the stud 15 and connected and fixed with the stud 15, and the first shielding ring 16 is slidably installed in the shielding tube 18, and the side of the nut 21 away from the first shielding ring 16 is provided with a second shielding ring 20, and the second shielding ring 20 is slidably installed in the shielding tube 18, and the second shielding ring 20 is sleeved on the stud 15 and connected and fixed with the stud 15, and the spacing between the first shielding ring 16 and the second shielding ring 20 is half the length of the shielding tube 18, so that the connection part between the stud 15 and the nut 21 is hidden in the space formed by the first shielding ring 16, the second shielding ring 20 and the shielding tube 18, and then when the stud 15 is screwed, the first shielding ring 16 and the second shielding ring 20 slide in the shielding tube 18, so as to prevent small debris from entering the nut 21 at will without affecting the screwing of the stud 15, thereby eliminating the trouble of cleaning small debris in the thread pattern.

[0026] See also Figure 1 and Figure 5Four universal brake wheels 6 are evenly installed at the bottom of the U-shaped frame 8. The universal brake wheels 6 are connected and fixed to the U-shaped frame 8 by two connecting screws 23. By installing the universal brake wheels 6 on the U-shaped frame 8, it is convenient to move the position of the axial flow fan 1. The outer surface of the U-shaped frame 8 is located directly above the universal brake wheels 6. The area is recessed downward to form a slot with a rectangular cross section. A plug block 7 with a rectangular cross section is inserted in the slot. The lower surface of the plug block 7 is provided with two screw holes 25 that match the connecting screws 23. The bottom of the slot Two small holes 24 are provided in the part. When the universal brake wheel 6 and the U-shaped frame 8 are connected by the connecting screws 23, the plug block 7 is inserted into the slot to realize the assembly of the plug block 7 and the U-shaped frame 8. The connecting screws 23 pass through the holes and the small holes 24 on the universal brake wheel 6 and are screwed into the screw holes 25 to complete the installation of the universal brake wheel 6. When the screw holes 25 are damaged due to wrong threads or the like, the plug block 7 can be replaced without replacing the entire U-shaped frame 8, thereby reducing the maintenance cost. At the same time, there is no need to open the screw holes 25 on the U-shaped frame 8.

[0027] See also Figure 1 A straight tube 10 is connected and fixed to the outer surface of the U-shaped frame 8, and the straight tube 10 is inclined in the direction away from the axial flow fan 1. A round rod 12 is inserted in the straight tube 10, and a gripping rod 13 is connected and fixed to one end of the round rod 12 outside the straight tube 10. A positioning screw 11 for limiting the relative position of the straight tube 10 and the round rod 12 is threadedly connected to the outer side of the end of the straight tube 10 away from the U-shaped frame 8. Two reinforcing ribs 9 are connected and fixed to the outer surface of one end of the straight tube 10 close to the U-shaped frame 8, and the other end of the reinforcing rib 9 is connected and fixed to the U-shaped frame 8. The length of the round rod 12 in the straight tube 10 is adjusted, and the position of the round rod 12 is limited by the positioning screw 11 to adjust the height of the gripping rod 13 as needed. The gripping rod 13, the round rod 12, the straight tube 10 and other components together form a gripping carrier for pushing the axial flow fan 1.

[0028] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A mobile fan, comprising an axial flow fan (1), characterized in that: The bottom of the axial flow fan (1) is provided with a U-shaped frame (8), both ends of the U-shaped frame (8) are connected and fixed with a column (5), the upper end of the column (5) is rotatably connected to the axial flow fan (1), the upper end of the column (5) is connected and fixed with an ear plate (17), a side of the ear plate (17) facing away from the axial flow fan (1) is installed with a shielding cylinder (18), a nut (21) is connected and fixed at a middle position inside the shielding cylinder (18), the inner thread of the nut (21) is connected with a stud (15) for limiting the relative position of the ear plate (17) and the axial flow fan (1), the end of the stud (15) away from the axial flow fan (1) is connected and fixed with a handle (14), and the A first shielding ring (16) is provided on a side of the nut (21) facing the handle (14); the first shielding ring (16) is sleeved on the stud (15) and is fixedly connected to the stud (15); the first shielding ring (16) is slidably mounted in the shielding tube (18); a second shielding ring (20) is provided on a side of the nut (21) facing away from the first shielding ring (16); the second shielding ring (20) is slidably mounted in the shielding tube (18); the second shielding ring (20) is sleeved on the stud (15) and is fixedly connected to the stud (15); and the spacing between the first shielding ring (16) and the second shielding ring (20) is half the length of the shielding tube (18).

2. A mobile fan according to claim 1, characterized in that: A connection plate is fixedly connected to one end of the stud (15) away from the handle (14), and the connection plate is slidably mounted in the shielding tube (18). A rubber head (19) that contacts the surface of the axial flow fan (1) is adhered to the side of the connection plate that is away from the stud (15).

3. A mobile fan according to claim 1, characterized in that: Four universal brake wheels (6) are evenly mounted on the bottom of the U-shaped frame (8), and the universal brake wheels (6) are connected and fixed to the U-shaped frame (8) via two connecting screws (23).

4. A mobile fan according to claim 3, characterized in that: The outer surface of the U-shaped frame (8) is recessed downwards in an area directly above the universal brake wheel (6) to form a slot, in which an insert block (7) is inserted, and the lower surface of the insert block (7) is provided with two screw holes (25) that match the connecting screws (23), and the bottom of the slot is provided with two small holes (24), and the connecting screws (23) pass through the holes and small holes (24) on the universal brake wheel (6) and are then threadedly connected in the screw holes (25).

5. A mobile fan according to claim 4, characterized in that: The slot has a rectangular cross section, and the insert block (7) has a rectangular cross section.

6. The mobile fan according to claim 1, characterized in that: A circular opening (22) is provided at the position of the ear plate (17) where the shielding tube (18) is installed, and one end of the shielding tube (18) is fixed in the circular opening (22).

7. The mobile fan according to claim 1, characterized in that: A straight tube (10) is connected and fixed to the outer surface of the U-shaped frame (8), and the straight tube (10) is inclined in a direction away from the axial flow fan (1). A round rod (12) is inserted in the straight tube (10), and one end of the round rod (12) outside the straight tube (10) is connected and fixed to a gripping rod (13). The outer side of the end of the straight tube (10) away from the U-shaped frame (8) is threadedly connected to a positioning screw (11) for limiting the relative position of the straight tube (10) and the round rod (12). Two reinforcing ribs (9) are connected and fixed to the outer surface of one end of the straight tube (10) close to the U-shaped frame (8), and the other end of the reinforcing rib (9) is connected and fixed to the U-shaped frame (8).

8. The mobile fan according to claim 1, characterized in that: Both ends of the axial flow fan (1) are connected and fixed with sleeve rings, and the back surfaces of the two sleeve rings are provided with rings (2). The rings (2) are connected and fixed with the sleeve rings via a plurality of bolts (4), and a protective net (3) is fixed inside the rings (2).

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