Sliding type cooling fan capable of adjusting air volume

Abstract

The utility model provides a sliding type heat dissipation fan capable of adjusting air volume, which relates to the technical field of heat dissipation equipment, and comprises a shell, a fan body is arranged in the shell, a plurality of supporting rods are arranged on the fan body in the circumferential direction, and a connecting plate is arranged at the free end of each supporting rod; the guide rails are arranged on the inner wall of the shell in the wind direction of the fan body, the number of the guide rails corresponds to that of the supporting rods, each guide rail is connected with a sliding block in a sliding mode, and each connecting plate is arranged on the corresponding sliding block; the guide rail is provided with a first fixing groove, each sliding block is provided with a first through hole matched with the first fixing groove, and each first through hole is in threaded connection with a limiting screw rod corresponding to the first fixing groove. Under the condition that a wall body is not damaged, the heat dissipation axial flow fan can be overhauled and replaced, and the effect of adjusting the air volume of the heat dissipation axial flow fan can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation equipment, and particularly relates to a sliding heat dissipation fan with adjustable air volume. Background Art

[0002] At present, the axial flow heat dissipation fan is of an integrated structure, and the air volume cannot be adjusted by the blades. When a small air volume is required, such as in a low ambient temperature in winter, the angle of the blades cannot be adjusted, and only by turning off the fan can the effect of reducing the air volume be achieved, which brings inconvenience to production. In addition, when the fan is damaged and needs to be replaced, only by demolishing the wall around the fan can the whole fan be removed and repaired and replaced, which greatly increases the maintenance cost. Summary of the Utility Model

[0003] In order to solve the problems that the air volume of the axial flow heat dissipation fan cannot be adjusted and that when the fan is damaged, the wall needs to be demolished for maintenance and replacement, the utility model provides a sliding heat dissipation fan with adjustable air volume, which can perform maintenance and replacement on the axial flow heat dissipation fan without demolishing the wall and can achieve the effect of adjusting the air volume of the axial flow heat dissipation fan.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A sliding heat dissipation fan with adjustable air volume is provided, including:

[0006] A housing, inside which a fan body is provided. A plurality of support rods are circumferentially arranged on the fan body, and a connecting plate is provided at the free end of each support rod;

[0007] A guide rail, which is arranged on the inner wall of the housing along the wind direction of the fan body. The number of the guide rails corresponds to that of the support rods. Each guide rail is slidably connected with a slider, and each connecting plate is arranged on each slider; a first fixing groove is formed on the guide rail, a first through hole adapted to the first fixing groove is formed on each slider, and a limiting screw corresponding to the first fixing groove is threadedly connected to each first through hole.

[0008] In some embodiments of the utility model, a second through hole is formed on the connecting plate, a fixing hole corresponding to the second through hole is formed on the slider, and a fastening bolt passing through the second through hole and the fixing hole is threadedly connected to the connecting plate.

[0009] In some embodiments of the utility model, each support rod abuts against the adjacent guide rail.

[0010] In some embodiments of the utility model, the number of the first fixing grooves is 3.

[0011] In some embodiments of the present utility model, the fan body includes blades, a hub, and a drive assembly. The drive assembly is arranged inside the housing through a plurality of support rods. The drive assembly is arranged on the hub and is used to drive the hub to rotate. A groove is formed on the hub, and a plurality of third through holes communicating with the groove are circumferentially formed on the side wall of the hub. The number of blades corresponds to the number of the third through holes, and a fixing rod located in each third through hole is provided on each blade. A transmission assembly located in the groove is arranged on the hub, and the transmission assembly is used to link the rotation of the blades on each fixing rod.

[0012] In some embodiments of the present utility model, the transmission assembly includes a gear disk and bevel gears, which are rotatably connected inside the groove. The number of bevel gears corresponds to the number of fixing rods. Each bevel gear is arranged on each corresponding fixing rod, and each bevel gear meshes with the outer wall of the gear disk, and the central axis of the bevel gear is perpendicular to the central axis of the gear disk.

[0013] In some embodiments of the present utility model, a handle is provided on the top of the gear disk.

[0014] In some embodiments of the present utility model, a cover is snap-fitted on the hub, and a second fixing groove for restricting the rotation of the handle is formed on the inner top of the cover.

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

[0016] The fan body is arranged inside the housing through the support rods. The free end of the support rod is connected to a connecting plate and a slider, and the slider is slidably connected to a guide rail on the inner wall of the housing. A limit screw on the slider can limit the slider. During use, by adjusting the tightness of the limit screw, the slider can slide on the guide rail. After the slider slides, the fan body can also move inside the housing along the central axis direction of the housing, so as to adjust the position of the fan body, and it is also convenient to repair the fan body without removing the entire housing when a fault occurs, reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 Structural schematic diagram of a sliding type cooling fan with adjustable air volume Figure 1 ;

[0019] Figure 2 For Figure 1 Partial enlarged schematic diagram at A in

[0020] Figure 3 is a top view of the guide rail;

[0021] Figure 4 Schematic diagram of the fan body Figure 1 ;

[0022] Figure 5 Schematic diagram of the fan body Figure 2 ;

[0023] Figure 6 Schematic diagram of the fan body Figure 3 ;

[0024] Figure 7 Schematic diagram of the wheel hub structure.

[0025] Reference numerals:

[0026] 1-housing, 10-guide rail, 11-slider, 12-first fixing groove, 13-first through hole, 14-limiting screw, 15-second through hole, 2-fan body, 20-wheel hub, 201-bayonet, 21-blade, 22-groove, 23-gear plate, 230-cavity, 231-fourth through hole, 232-limiting groove, 24-third through hole, 25-fixing rod, 26-bevel gear, 27-handle, 270-limiting rod, 28-cover, 280-second fixing groove, 29-undercut, 3-support rod, 30-connecting plate. DETAILED DESCRIPTION

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0028] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention.

[0029] The embodiments of the utility model are described in detail below with reference to the accompanying drawings. Example

[0030] As shown Figures 1 - 3 in the figure, this embodiment provides a sliding heat dissipation fan with adjustable air volume, including:

[0031] A housing 1, inside which there is a fan body 2. A plurality of support rods 3 are circumferentially arranged on the fan body 2, and a connecting plate 30 is provided at the free end of each support rod 3;

[0032] A guide rail 10 is arranged on the inner wall of the housing 1 along the wind direction of the fan body 2. The number of the guide rails 10 corresponds to that of the support rods 3. A slider 11 is slidably connected to each guide rail 10, and each connecting plate 30 is arranged on each slider 11. A first fixing groove 12 is formed on the guide rail 10, a first through hole 13 adapted to the first fixing groove 12 is formed on each slider 11, and a limiting screw 14 corresponding to the first fixing groove 12 is threadedly connected to each first through hole 13.

[0033] The fan body 2 is fixed inside the housing 1 through a plurality of support rods 3 circumferentially arranged on itself, and the housing 1 is installed on a wall or some walls. A connecting plate 30 is arranged at one end of each support plate away from the fan body 2, and the other end of the connecting plate 30 is arranged on the slider 11. The slider 11 and the guide rail 10 arranged on the inner wall of the housing 1 are slidably connected to each other, and the sliding direction of the slider 11 on the guide rail 10 is the same as the air flow direction generated when the fan body 2 operates. A first through hole 13 is formed in the middle of the slider 11, and a first fixing groove 12 is formed on the guide rail 10. When it is necessary to fix the slider 11, by adjusting the limiting screw 14 located in the first through hole 13, the limiting screw 14 enters the first fixing groove 12 on the guide rail 10 to complete the limitation of the slider 11 and prevent the slider 11 from sliding continuously on the guide rail 10; when it is necessary to adjust the movement of the slider 11, by adjusting the limiting screw 14, after the limiting screw 14 is separated from the first fixing groove 12 on the guide rail 10, the slider 11 can be moved. During the sliding process of the slider 11, it can be separated from the guide rail 10, and at this time, the fan body 2 can be removed for maintenance and replacement, avoiding the need to remove the housing 1 by damaging the wall or avoiding it and then performing maintenance and replacement on the fan body 2 inside the housing 1, thus reducing the maintenance cost.

[0034] Further, as Figure 3 shown in the figure, a second through hole 15 is formed on the connecting plate 30, a fixing hole corresponding to the second through hole 15 is formed on the slider 11, and a fastening bolt passing through the second through hole 15 and the fixing hole is threadedly connected to the connecting plate 30.

[0035] Both ends of the connecting plate 30 are provided with second through holes 15. Fixing holes corresponding to the second through holes 15 on the connecting plate 30 are provided on the slider 11, and fastening bolts are threadedly connected to the second through holes 15 and the fixing holes, so that the connecting plate 30 is detachably connected to the slider 11, facilitating the disassembly of the fan body 2 from the housing 1 for maintenance and replacement.

[0036] Further, as Figure 3 shown, each support rod 3 abuts against the adjacent guide rail 10.

[0037] Each support rod 3 abuts against the guide rail 10 adjacent to itself, that is, the end of the support rod 3 facing the housing 1 contacts the bottom on the adjacent guide rail 10. The purpose is that when the fan body 2 rotates, the overall stability can be enhanced through the abutment of the support rod 3 on the guide rail 10, avoiding the rotation of the fan body 2 from affecting the overall shaking of the housing 1.

[0038] Further, as Figure 3 shown, the number of the first fixing grooves 12 is 3.

[0039] In this embodiment, the number of the first fixing grooves 12 provided on the guide rail 10 is 3. The opening of the 3 first fixing grooves 12 can provide multiple fixing points for the slider 11 on the guide rail 10. For each slider 11 at a different position, the air volume provided by the fan body 2 will also change.

[0040] Further, as Figure 4 shown, the fan body 2 includes blades, a hub 20 and a driving assembly. The driving assembly is arranged inside the housing 1 through a plurality of support rods 3. The driving assembly is arranged on the hub 20 and is used to drive the hub 20 to rotate; a groove 22 is provided on the hub 20, and a plurality of third through holes 24 communicating with the groove 22 are circumferentially provided on the side wall of the hub 20; the number of the blades corresponds to the number of the third through holes 24, and a fixing rod 25 located in each third through hole 24 is provided on each blade; a transmission assembly located in the groove 22 is provided on the hub 20, and the transmission assembly is used to drive the blades on each fixing rod 25 to rotate.

[0041] In the fan body 2, the driving component drives the hub 20 to rotate through an external power supply. When the hub 20 rotates, it can drive the blades 21 on the hub 20 to rotate, forming an air flow. A groove 22 is opened at the middle position of the hub 20, and a plurality of third through holes 24 are circumferentially opened on the outer wall of the hub 20. The adjacent third through holes 24 are arranged at equal intervals, and the number of the third through holes 24 corresponds to the number of the blades 21. A fixing rod 25 is arranged at one end of each blade 21 facing the hub 20, and the fixing rod 25 is located inside the third through hole 24. A bevel gear 26 is arranged at one end of the fixing rod 25 facing the hub 20. A gear disk 23 is rotatably connected inside the groove 22. Helical teeth are arranged on the outer wall of the gear disk 23 and can be meshed with the bevel gear 26. When the gear disk 23 rotates in the groove 22 on the hub 20, it drives the blades on the fixing rod 25 to rotate, so as to adjust the blade angle and achieve the effect of adjusting the air volume of the fan.

[0042] Further, as Figure 4 shown, the transmission component includes a gear disk 23 and a bevel gear 26, which are rotatably connected inside the groove 22. The number of the bevel gears 26 corresponds to the number of the fixing rods 25. Each bevel gear 26 is arranged on each corresponding fixing rod 25, and each bevel gear 26 is meshed with the outer wall of the gear disk 23, and the central axis of the bevel gear 26 is perpendicular to the central axis of the gear disk 23.

[0043] The gear disk 23 is located at the center of the groove 22 and is rotatably connected to the bottom of the groove 22. The teeth on the outer wall of the gear disk 23 are helical teeth and can be meshed with the helical teeth on the bevel gear 26 to achieve the transmission effect. The rotation direction of the gear disk 23 is the same as the running direction of the hub 20. The same direction here does not mean that the rotation direction of the gear disk 23 needs to be the same as the rotation direction of the hub 20, but indicates that the rotation direction of the gear disk 23 is along the rotation direction of the hub 20 when it runs. The bevel gear 26 is arranged at one end of each fixing rod 25 facing the gear disk 23, and each bevel gear 26 is meshed with the gear disk 23. The central axis of the bevel gear 26 is along the radius direction of the gear disk 23, that is, the central axis of the bevel gear 26 and the central axis of the gear disk 23 form a 90° perpendicular situation.

[0044] During use, after the gear disc 23 rotates, through the meshing of the helical teeth on the outer wall of the gear disc 23 and the helical teeth on the outer wall of the bevel gear 26, the fixed rod 25 is driven to rotate. After the fixed rod 25 rotates, the blade 21 connected to the other end of the fixed rod 25 can be rotated, achieving the effect of adjusting the angle of the blade 21. It should be noted that currently, the hubs 20 in most fan bodies 2 are basically cylindrical structures. When the blades 21 are arranged on the outer wall of the hub 20, they need to fit the outer wall of the hub 20. If the angle of the blade 21 needs to be adjusted, it will be difficult for the blade 21 to always fit the outer wall of the hub 20. Therefore, the material of the blade 21 is selected as nylon material or ABS material. The blades 21 made of these two materials respectively can meet the requirement that when the angle of the blade 21 is adjusted, the blade 21 always fits the outer wall of the hub 20.

[0045] Furthermore, as Figure 5 shown, a handle 27 is provided on the top of the gear disc 23.

[0046] The handle 27 is arranged on the top of the gear disc 23, and the gear disc 23 can be adjusted to rotate through the handle 27, so as to realize the adjustment of the angle of the blade 21.

[0047] Furthermore, as Figure 6 and Figure 7 shown, a cover 28 is clamped on the hub 20, and a second fixing groove 280 for restricting the rotation of the handle 27 is opened at the inner top of the cover 28.

[0048] The cover 28 is used to enclose the gear disc 23 in the groove 22. The diameter of the cover 28 is equal to the diameter of the hub 20. The cover 28 and the hub 20 are connected by a clamping method. Specifically, a plurality of connecting rods are circumferentially arranged on the outer wall of the cover 28, and buckles 29 are arranged at the free ends of the connecting rods. A plurality of bayonets 201 are opened on the outer wall of the hub 20. The number of the bayonets 201 corresponds to the number of the buckles 29. Each buckle 29 corresponds to each bayonet 201, so that the cover 28 and the hub 20 are detachably connected. The second fixing groove 280 is opened on the side of the cover 28 facing the hub 20. The second fixing groove 280 is used to restrict the handle 27, so as to avoid the spontaneous rotation of the handle 27 from affecting the angle of the blade 21 and thus affecting the air volume when the angle of the blade 21 does not need to be adjusted.

[0049] When in use, if the air volume needs to be adjusted, the undercut 29 on the cover 28 is removed from the bayonet 201 on the outer wall of the hub 20, and the cover 28 can be removed from the hub 20. At this time, the second fixing groove 280 on the cover 28 can no longer limit the handle 27, and the angle of the blade 21 can then be adjusted using the handle 27. After the angle of the blade 21 is adjusted, the cover 28 is pressed against the hub 20. During the process of fastening the cover 28, the second fixing groove 280 on the cover 28 must be aligned with the handle 27, so that the cover 28 can limit the handle 27. After the undercut 29 on the cover 28 and the bayonet 201 on the outer wall of the hub 20 are correspondingly engaged, the cover 28 is installed on the hub 20, which has the effect of closing the groove 22 of the hub 20 and limiting the rotation of the handle 27 on the hub 20.

[0050] It is worth noting that if the handle 27 does not change the angle of the blade 21 much, then if the cover 28 wants to restrict the handle 27 with a small change in angle, it also needs to adjust its own angle so that the second fixing groove 280 can restrict the handle 27. In this case, if the cover 28 is to adjust the same angle as the handle 27, the number of undercuts 29 and latches 201 on the cover 28 will increase simultaneously, so that the cover 28 can be fixed after adjusting different angles, making the structure more complicated. Therefore, a cavity 230 is provided inside the gear plate 23, and a fourth through hole 231 is provided on the gear plate 23 to communicate with the cavity 230, and a limit groove 232 is also provided to communicate with both the cavity 230 and the fourth through hole 231. The handle 27 is rotatably connected to the fourth through hole 231, and the part of the handle 27 located in the cavity 230 is provided with a limit rod 270, which is used to prevent the handle 27 from falling out of the cavity 230. In addition, the handle 27 can also move up and down along the central axis direction of the fourth through hole 231. When the handle 27 moves up and down, the limit rod 270 can enter the limit groove 232. At this time, rotating the handle 27 can drive the gear plate 23 to rotate; when there is no need to rotate, the handle 27 is pushed into the cavity 230, so that the limit rod 270 and the limit groove 232 are disengaged. At this time, rotating the handle 27 allows the second fixing groove 280 on the cover 28 to limit the handle 27 after adjusting any angle without adding the undercut 29 and the bayonet 201, and without adjusting the angle of the cover 28, thereby preventing the blade 21 from rotating by itself.

[0051] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Without conflict, the embodiments of the present application and the features in the embodiments can be combined arbitrarily. Any modification, equivalent replacement, improvement, 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 sliding cooling fan with adjustable air volume, characterized in that, Comprising: a housing, inside which a fan body is provided, on which a plurality of support rods are circumferentially arranged, and on the free end of each support rod, a connecting plate is provided; a guide rail, which is arranged on the inner wall of the housing along the wind direction of the fan body, and the number of the guide rails corresponds to that of the support rods, and on each guide rail, a slider is slidably connected, and each connecting plate is arranged on each slider; a first fixing groove is formed on the guide rail, and on each slider, a first through hole adapted to the first fixing groove is formed, and on each first through hole, a limiting screw corresponding to the first fixing groove is threadedly connected.

2. The adjustable air volume sliding heat dissipation fan according to claim 1, wherein A second through hole is formed on the connecting plate, a fixing hole corresponding to the second through hole is formed on the slider, and a fastening bolt passing through the second through hole and the fixing hole is threadedly connected to the connecting plate.

3. The adjustable air volume sliding heat dissipation fan according to claim 2, wherein, Each support rod abuts against the adjacent guide rail.

4. The adjustable air volume sliding heat dissipation fan according to claim 3, wherein, The number of the first fixing grooves is 3.

5. The adjustable air volume sliding heat dissipation fan according to claim 1 or 4, characterized in that, The fan body includes blades, a hub and a driving component. The driving component is arranged inside the housing through a plurality of support rods, the driving component is arranged on the hub and is used for driving the hub to rotate; a groove is formed on the hub, and a plurality of third through holes communicating with the groove are circumferentially formed on the side wall of the hub; the number of the blades corresponds to that of the third through holes, and on each blade, a fixing rod located in each third through hole is provided; a transmission component located in the groove is arranged on the hub, and the transmission component is used for driving the blades on each fixing rod to rotate in a linkage manner.

6. The adjustable air volume sliding heat dissipation fan according to claim 5, wherein The transmission component includes a gear disc and bevel gears, which are rotatably connected inside the groove. The number of the bevel gears corresponds to that of the fixing rods, and each bevel gear is arranged on each corresponding fixing rod. Each bevel gear meshes with the outer wall of the gear disc, and the central axis of the bevel gear is perpendicular to the central axis of the gear disc.

7. The adjustable air volume sliding heat dissipation fan according to claim 6, wherein A handle is provided on the top of the gear disc.

8. The adjustable air volume sliding heat dissipation fan according to claim 7, wherein A cover is snap-connected to the hub, and a second fixing groove for restricting the rotation of the handle is formed on the inner top of the cover.

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