A DC fan

Abstract

The utility model provides a DC fan, comprising a cylinder, one end of which is connected and fixed with a first ring, one end of which is close to the first ring and has two notches, a motor is arranged on one side of the cylinder close to the first ring, and two connecting plates are installed on the outer surface of the motor through an adjusting member, one end of the connecting plate is connected and fixed with a plug plate matching the notch, one side of the plug plate is provided with a circular hole, a first through hole aligned with the circular hole is arranged on the first ring, a first connecting ring is arranged on the side of the first ring away from the plug plate, one side of the first connecting ring is provided with a first through hole aligned with the first through hole, a first screw is inserted in a channel formed by the first through hole, the first through hole and the circular hole, and one end of the first screw is threadedly connected with a first nut. The utility model has the following beneficial effects: it is convenient to install the screw for limiting the position of the motor on the outside of the cylinder.

Description

Technical Field

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

[0002] A DC fan is a type of fan. The DC fan comprises a cylinder, and a motor with fan blades is arranged in the cylinder. A bracket is installed on the motor, and the bracket is installed on a raised portion on the inner wall of the cylinder by screws. After the motor is arranged in the cylinder, the motor will occupy part of the space in the cylinder, and the space for installing screws that limit the position of the motor is small. It is inconvenient to use tools such as wrenches to disassemble and assemble the screws that limit the position of the motor, which increases the difficulty of disassembly and assembly. Therefore, it is necessary to design a DC fan that installs the screws that limit the position of the motor on the outside of the cylinder. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a DC fan to solve the problems raised in the above-mentioned background technology. The utility model facilitates the installation of screws for limiting the position of the motor on the outside of the cylinder.

[0004] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a DC fan, comprising a cylinder, one end of the cylinder is connected and fixed with a first ring, one end of the cylinder close to the first ring is provided with two notches, a motor is provided on one side of the cylinder close to the first ring, a fan blade in the cylinder is installed on the motor output shaft, two connecting plates are installed on the outer surface of the motor through an adjusting member, the two connecting plates are symmetrically fitted on the inner wall of the cylinder, one end of the connecting plate is connected and fixed with a plug plate matching the notch, the plug plate passes through the notch, one side of the plug plate is provided with a circular hole, a first through hole aligned with the circular hole is provided on the first ring, a first connecting ring is provided on the side of the first ring away from the plug plate, a first mesh cover is installed on the side of the first connecting ring away from the first ring, a first through hole aligned with the first through hole is provided on one side of the first connecting ring, a first screw is inserted in the channel formed by the first through hole, the first through hole and the circular hole, one end of the first screw is threadedly connected with a first nut, and the first nut is arranged on the side of the plug plate away from the first ring.

[0005] Furthermore, the adjusting member includes a first screw, and the first screw is installed on one side of the two connecting plates facing the motor, the end of the first screw away from the connecting plate is threadedly connected to an internal threaded barrel, the side of the internal threaded barrel away from the first screw is threadedly connected to a second screw, one end of the second screw in the internal threaded barrel is connected and fixed to the motor, the thread on the first screw is in opposite directions to the thread on the second screw, and the threads on both sides of the internal threaded barrel are in opposite directions.

[0006] Furthermore, a plurality of convex strips are evenly installed on the outer surface of the internally threaded barrel, and the convex strips are arranged along the length direction of the internally threaded barrel.

[0007] Furthermore, the position where the connecting plate is mounted with the first screw is recessed to form a blind hole, and one end of the first screw away from the internal threaded barrel is fixed in the blind hole.

[0008] Furthermore, a second ring is connected and fixed to one end of the cylinder away from the first ring, a second connecting ring is provided on the side of the second ring facing away from the first ring, a second mesh cover is installed on the side of the second connecting ring facing away from the second ring, a plurality of second through holes are provided on one side of the second connecting ring, a plurality of second through holes are provided on one side of the second ring, a second screw is inserted in the space formed by the second through hole and the second through hole, and a second nut is threadedly connected to one end of the second screw.

[0009] Furthermore, the plug plate and the connecting plate are an integrally formed structure, the plug plate and the connecting plate are arranged perpendicular to each other, and a side of the connecting plate facing away from the motor is processed with an arc surface with the same arc as the inner wall of the cylinder.

[0010] Beneficial effects of the utility model:

[0011] 1. Twist the internal threaded barrel to change the length of the first screw and the second screw in the internal threaded barrel, so that the distance between the connecting plate and the motor is increased or shortened, which is convenient for adjusting the distance between the connecting plate and the motor and for passing the plug plate through the notch on the barrel. At the same time, the design of the notch does not affect the alignment and fit of the first connecting ring and the first ring.

[0012] 2. After the plug plate is inserted into the notch, the circular hole, the first perforation and the first through hole are aligned, and then the first screw is passed through the channel formed by the circular hole, the first perforation and the first through hole, and then the first nut is screwed on, so that the position of the motor in the cylinder is limited by the first nut and the first screw, and the first mesh cover is installed at one end of the cylinder. On the one hand, the use of screws is reduced, and on the other hand, the fastener formed by the first screw and the first nut that limit the position of the motor is located outside the cylinder, which is convenient for disassembling and assembling the first screw in a large space using tools such as wrenches, thereby reducing the difficulty of disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0014] Figure 1 This is a structural schematic diagram of a DC fan of the utility model;

[0015] Figure 2 This is a three-dimensional diagram of a DC fan of the utility model from another perspective;

[0016] Figure 3 This is a schematic diagram of the assembly of a motor and a cylinder in a DC fan of the utility model;

[0017] Figure 4 This is a schematic diagram of the assembly of a connecting plate and a motor in a DC fan of the utility model;

[0018] Figure 5 This is a schematic diagram of the assembly of a first ring, a second ring and a cylinder in a DC fan of the utility model;

[0019] In the figure: 1-cylinder, 2-first ring, 3-first connecting ring, 4-first mesh cover, 5-first screw, 6-second ring, 7-second nut, 8-second connecting ring, 9-plug plate, 10-first nut, 11-second screw, 12-second mesh cover, 13-motor, 14-first perforation, 15-second perforation, 16-circular hole, 17-connecting plate, 18-fan blade, 19-inner threaded cylinder, 20-first screw, 21-second screw, 22-notch. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-Figure 5The utility model provides a technical solution: a DC fan comprises a cylinder 1, one end of the cylinder 1 is connected and fixed with a first ring 2, one end of the cylinder 1 close to the first ring 2 is provided with two notches 22, a motor 13 is provided on one side of the cylinder 1 close to the first ring 2, a fan blade 18 in the cylinder 1 is installed on the output shaft of the motor 13, two symmetrically arranged connecting plates 17 are provided on the outside of the motor 13, the two connecting plates 17 are symmetrically fitted on the inner wall of the cylinder 1, wherein a side of the connecting plate 17 away from the motor 13 is processed with an arc surface with the same arc as the inner wall of the cylinder 1, a first screw 20 is installed in the blind hole provided on the side of the two connecting plates 17 facing the motor 13, an end of the first screw 20 away from the connecting plate 17 is threadedly connected with an internal threaded cylinder 19, and a side of the internal threaded cylinder 19 away from the first screw 20 is threadedly connected with a second screw Rod 21, one end of the second screw 21 in the internal threaded barrel 19 is connected and fixed to the motor 13, the thread on the first screw 20 is opposite to the thread on the second screw 21, and the threads on both sides of the internal threaded barrel 19 are opposite. Turning the internal threaded barrel 19 changes the length of the first screw 20 and the second screw 21 in the internal threaded barrel 19, so that the spacing between the connecting plate 17 and the motor 13 increases or shortens, which is convenient for adjusting the spacing between the connecting plate 17 and the motor 13, and convenient for passing the plug plate 9 through the notch 22 on the barrel body 1. At the same time, the design of the notch 22 does not affect the alignment and fit of the first connecting ring 3 and the first ring 2. A plurality of convex strips are evenly installed on the outer surface of the internal threaded barrel 19, and the convex strips are arranged along the length direction of the internal threaded barrel 19. The convex strips increase the anti-slip property of the surface of the internal threaded barrel 19, which is convenient for twisting the internal threaded barrel 19.

[0022] See also Figure 1-Figure 5, one end of the connecting plate 17 is connected and fixed with a plug plate 9 that matches the notch 22, the plug plate 9 and the connecting plate 17 are an integrally formed structure, the plug plate 9 and the connecting plate 17 are arranged perpendicular to each other, the plug plate 9 passes through the notch 22, a circular hole 16 is opened on one side of the plug plate 9, a first through hole 14 aligned with the circular hole 16 is opened on the first ring 2, a first connecting ring 3 is provided on the side of the first ring 2 away from the plug plate 9, a first mesh cover 4 is installed on the side of the first connecting ring 3 away from the first ring 2, a first through hole aligned with the first through hole 14 is opened on one side of the first connecting ring 3, a first screw 5 is inserted in the channel formed by the first through hole, the first through hole 14 and the circular hole 16, one end of the first screw 5 is threadedly connected with a first nut 10, the first A nut 10 is arranged on the side of the plug plate 9 away from the first ring 2. After the plug plate 9 is inserted into the notch 22, the circular hole 16, the first through hole 14 and the first through hole are aligned, and then the first screw 5 is passed through the channel formed by the circular hole 16, the first through hole 14 and the first through hole, and the first nut 10 is screwed on, so that the first nut 10 and the first screw 5 are used to jointly limit the position of the motor 13 in the cylinder 1 and the first mesh cover 4 is installed at one end of the cylinder 1. On the one hand, the use of screws is reduced, and on the other hand, the fastener formed by the first screw 5 and the first nut 10 that limit the position of the motor 13 is located outside the cylinder 1, which is convenient for disassembling and assembling the first screw 5 in a large space using tools such as a wrench, thereby reducing the difficulty of disassembly and assembly.

[0023] See also Figure 1 , Figure 2 , Figure 3 and Figure 5 A second ring 6 is connected and fixed to one end of the cylinder 1 away from the first ring 2, a second connecting ring 8 is provided on the side of the second ring 6 away from the first ring 2, a second mesh cover 12 is installed on the side of the second connecting ring 8 away from the second ring 6, a plurality of second through holes are provided on one side of the second connecting ring 8, a plurality of second through holes are provided on one side of the second ring 6, a second screw 11 is inserted in the space formed by the second through hole and the second through hole 15, a second nut 7 is threadedly connected to one end of the second screw 11, the second connecting ring 8 and the second ring 6 are connected in a matching manner by the second screw 11 and the second nut 7, and the second mesh cover 12 is assembled with the cylinder 1, and the first mesh cover 4 and the second mesh cover 12 work together to protect the motor 13 and the fan blades 18 in the cylinder 1.

[0024] 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 DC fan, comprising a cylinder (1), characterized in that: A first ring (2) is connected and fixed to one end of the cylinder (1), and two notches (22) are provided at one end of the cylinder (1) close to the first ring (2). A motor (13) is provided on one side of the cylinder (1) close to the first ring (2), and a fan blade (18) located in the cylinder (1) is installed on the output shaft of the motor (13). Two connecting plates (17) are installed on the outer surface of the motor (13) through an adjusting member, and the two connecting plates (17) are symmetrically fitted on the inner wall of the cylinder (1). An insert plate (9) matching the notch (22) is connected and fixed to one end of the connecting plate (17), and the insert plate (9) passes through the notch (22). A circular hole is provided on one side of the insert plate (9). (16), a first through hole (14) aligned with the circular hole (16) is formed on the first ring (2), a first connecting ring (3) is formed on the side of the first ring (2) away from the plug plate (9), a first mesh cover (4) is installed on the side of the first connecting ring (3) away from the first ring (2), a first through hole aligned with the first through hole (14) is formed on one side of the first connecting ring (3), a first screw (5) is inserted into the channel formed by the first through hole, the first through hole (14) and the circular hole (16), one end of the first screw (5) is threadedly connected with a first nut (10), and the first nut (10) is arranged on the side of the plug plate (9) away from the first ring (2).

2. A DC fan according to claim 1, characterized in that: The adjusting member comprises a first screw (20), and the first screw (20) is installed on one side of the two connecting plates (17) facing the motor (13); the end of the first screw (20) away from the connecting plate (17) is threadedly connected to an internal threaded barrel (19); the side of the internal threaded barrel (19) away from the first screw (20) is threadedly connected to a second screw (21); one end of the second screw (21) located in the internal threaded barrel (19) is connected and fixed to the motor (13); the thread on the first screw (20) is in opposite directions to the thread on the second screw (21); and the threads on both sides of the internal threaded barrel (19) are in opposite directions.

3. A DC fan according to claim 2, characterized in that: A plurality of convex strips are evenly mounted on the outer surface of the internally threaded barrel (19), and the convex strips are arranged along the length direction of the internally threaded barrel (19).

4. A DC fan according to claim 2, characterized in that: The position where the connecting plate (17) is mounted with the first screw rod (20) is recessed to form a blind hole, and one end of the first screw rod (20) away from the internal threaded cylinder (19) is fixed in the blind hole.

5. A DC fan according to claim 1, characterized in that: The end of the cylinder (1) away from the first ring (2) is connected and fixed with a second ring (6); a second connecting ring (8) is provided on the side of the second ring (6) away from the first ring (2); a second mesh cover (12) is installed on the side of the second connecting ring (8) away from the second ring (6); a plurality of second through holes are provided on one side of the second connecting ring (8); a plurality of second through holes (15) are provided on one side of the second ring (6) and aligned with the second through holes; a second screw (11) is inserted in the space formed by the second through hole and the second through hole (15); and a second nut (7) is threadedly connected to one end of the second screw (11).

6. A DC fan according to claim 1, characterized in that: The plug plate (9) and the connecting plate (17) are an integrally formed structure. The plug plate (9) and the connecting plate (17) are arranged perpendicular to each other. A side of the connecting plate (17) facing away from the motor (13) is processed with an arc surface with the same arc as the inner wall of the cylinder (1).

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