TWI805055B - Cooling fan - Google Patents

Abstract

A cooling fan is used to solve the problem that the wires of the conventional cooling fan are easy to loosen. The cooling fan includes a fan frame, an impeller and a limit member. The fan frame has a ring wall, and an assembling structure of the fan frame is connected to the ring wall. The impeller rotatably coupled with the fan frame. The limit member is detachably combined with the assembling structure in the axial direction. The limit member and the ring wall together form at least one limit slot, and the limit slot is used to radially limit the loosening of a wire.

Description

cooling fan

The present invention relates to a cooling device, in particular to a cooling fan.

A conventional cooling fan may have a fan frame and a fan wheel, the fan frame may have a line groove, and the fan wheel may be rotatably located in the fan frame. Also, the cooling fan can have a wire (such as a power cable), which can pass through the groove and be electrically connected to an external power supply, whereby the external power supply can supply power to the cooling fan through the wire , to drive the fan wheel to rotate.

The above-mentioned known heat dissipation fan is to place the wire in the wire groove through an opening of the wire groove. In order to meet the requirements of different wire diameters, the wire groove is usually provided with a larger opening. However, the Larger openings can easily cause the wires to loosen or fall out of the grooves, making the wires easily pinched during assembly, resulting in poor contact or breakage of the wires, which seriously affects the conventional heat dissipation fan. The service life of the cooling fan is long, and no matter whether it is to choose to repair the components or directly replace the whole set of cooling fans, it will cause an additional burden on the user.

In view of this, it is necessary to improve the conventional cooling fan.

In order to solve the above problems, the purpose of the present invention is to provide a heat dissipation fan, which can avoid wire loosening.

The second object of the present invention is to provide a cooling fan, which can improve the convenience of installation sex.

Another object of the present invention is to provide a cooling fan which can reduce the manufacturing cost.

Another object of the present invention is to provide a cooling fan which can improve the stability of the combination.

Directionality or similar terms used throughout the present invention, such as "front", "rear", "left", "right", "upper (top)", "lower (bottom)", "inner", "outer" , "side", etc., mainly refer to the directions of the attached drawings, and each direction or its approximate terms are only used to assist in explaining and understanding the various embodiments of the present invention, and are not intended to limit the present invention.

The elements and components described throughout the present invention use the quantifier "a" or "an" only for convenience and to provide the usual meaning of the scope of the present invention; in the present invention, it should be interpreted as including one or at least one, and singular The notion of also includes the plural unless it is obvious that it means otherwise.

Approximate terms such as "combination", "combination" or "assembly" mentioned throughout the present invention mainly include forms that can be separated without destroying the components after connection, or that the components cannot be separated after connection, etc., which are common knowledge in the art. One can be selected according to the material of the components to be connected or assembly requirements.

The cooling fan of the present invention includes: a fan frame with a ring wall, an assembly structure of the fan frame connected to the ring wall, the assembly structure has at least one first positioning part; a fan wheel, rotatably located on the fan frame Inside; and a limiting member, detachably combined with the assembly structure axially, the limiting member has a first surface and a second surface opposite, the limiting member has at least one second positioning portion located on the second On one side of the surface, the at least one second positioning part is combined with the at least one first positioning part. The limiting part has a connected body and a limiting section. The main body is axially aligned with the assembly structure. The component and the ring wall jointly form at least one limiting groove, and the limiting groove is used for radially limiting a wire from loosening.

Accordingly, the cooling fan of the present invention utilizes the limiting member to detachably combine with the assembly structure, and the limiting member and the ring wall jointly form at least one limiting groove, so that the wire can be limited in the limiting groove No matter in the process of assembling the heat dissipation fan or the rotation of the fan wheel, the wire can be prevented from loosening or falling out of the limiting slot, thereby preventing the wire from being pinched and reducing the chance of poor contact or open circuit situation occurs, thereby, it has the effect of improving the convenience of use and prolonging the service life of the cooling fan, and the structure is simple and easy to manufacture, and has the effect of reducing manufacturing cost, and when the limiting member is combined with the assembly structure, it is It can prevent the position-limiting member from being displaced relative to the assembly structure along a radial direction, which has the effect of improving the stability of the combination.

Wherein, the ring wall may have a notch, and the free end of the limiting section may abut against the notch. In this way, it can be ensured that no gap will be formed between the limiting section and the surrounding wall, which has the effect that the wire can always be firmly positioned in the limiting groove.

Wherein, the connection between the body and the limiting section may have an arc guide portion. In this way, when the wire is located in the limiting groove and the wire is pulled, it is less likely to generate shear force and cause cracking of the limiting section, which has the effect of increasing the service life of the limiting member.

Wherein, the limiting member may have a first surface and a second surface opposite to each other, the limiting member may have two buckles located on one side of the second surface, and the two buckles are combined with the assembly structure. In this way, the limiting member can be firmly combined with the assembly structure, which has the effect of improving the stability of the combination.

Wherein, the assembly structure may have two side wall parts, and the two buckle parts may be connected to the two side wall parts by two sides of the assembly structure. In this way, the two buckles enable the limiting member to be combined from the outside of the assembly structure, which has the effect of improving the convenience of assembly.

Wherein, the fan frame has a top plate, the limiting member may have a first surface and a second surface opposite to each other, and the first surface may be flush with an outer surface of the top plate. In this way, the limiting member can be prevented from exceeding the outer surface of the fan frame, which has the effect of not affecting the overall axial height of the cooling fan of the present invention.

Wherein, the limiting member may have two limiting sections connected to two sides of a body, and the two limiting sections may surround the ring wall to form two limiting grooves. In this way, when assembling the fan frame into a system, the wire can be selected to be accommodated in one of the two limiting slots according to the configuration requirements, or the two limiting slots can be respectively accommodated by the two wires. The effect of ease of installation.

Wherein, the number of the fan frame and the fan wheel can be two, and the two fan frames can have a top plate respectively, and the ring wall is connected between the two top plates, and the two fan wheels are located at the circle of the two top boards and the ring wall. In the enclosed space, the quantity of the limiting member can be one or two. In this way, the heat dissipation fan is a series fan, and one or two limiting slots can be formed for accommodating wires, which has the effect of improving the convenience of installation.

〔this invention〕

1: fan frame

11: Bottom plate

12: Top plate

12a: Outer surface

13: ring wall

131: Notch part

14: Assembly structure

141: The first positioning department

142: side wall

2: fan wheel

21: hub

22: blade

3: Limiting parts

3a: first surface

3b: Second surface

31: Ontology

32: limit segment

32a: free end

33: buckle

34:Second positioning department

35: arc guide part

L wire

S: limit slot

X: radial direction

Y: axis direction

[FIG. 1] An exploded perspective view of a first embodiment of the present invention.

[Fig. 2] An assembled perspective view of the first embodiment of the present invention.

[Fig. 3] A partially assembled front view of the first embodiment of the present invention.

[Fig. 4] An assembled perspective view of the second embodiment of the present invention.

[Fig. 5] The second embodiment of the present invention is a combination perspective view of two wires passing through the connection of the two fan frames.

[FIG. 6] An assembled perspective view of the third embodiment of the present invention.

[Fig. 7] An exploded perspective view of a fourth embodiment of the present invention.

[Fig. 8] An assembled perspective view of the fifth embodiment of the present invention.

In order to make the above and other objects, features and advantages of the present invention more obvious and understandable, the following Wen Te cites preferred embodiments of the present invention and explains them in detail in conjunction with the accompanying drawings; in addition, those marked with the same symbols in different drawings are deemed to be the same, and their descriptions will be omitted.

Please refer to Figure 1, which is the first embodiment of the cooling fan of the present invention, which includes a fan frame 1, a fan wheel 2 and a limiting member 3, and the fan wheel 2 is rotatably located on the fan frame 1 Inside, the limiting member 3 is combined with the fan frame 1 . The present invention can be applied to heat dissipation fans such as blower fans or axial flow fans. Although this embodiment uses an axial flow fan as an example for illustration, it is not limited thereto.

The fan frame 1 is based on the principle that the airflow can be smoothly blown out. The structure, composition and appearance of the fan frame 1 are not limited by the present invention, nor are they limited by the drawings disclosed in this embodiment. For example, the fan frame 1 may have a bottom plate 11 and a top plate 12 opposite to each other, an axis direction Y may be defined between the bottom plate 11 and the top plate 12, and the axis direction Y may be perpendicular to a radial direction X. The fan frame 1 has a ring wall 13, the ring wall 13 is connected between the bottom plate 11 and the top plate 12, the ring wall 13 and the bottom plate 11 can preferably be integrally connected, so that the structure of the fan frame 1 can be improved strength. Moreover, the ring wall 13 can have a notch portion 131 , and the notch portion 131 can be adjacent to an outer surface 12 a of the top plate 12 .

The fan frame 1 has an assembly structure 14, the assembly structure 14 is connected to the ring wall 13, and the assembly structure 14 is preferably integrally connected to the ring wall 13, the assembly structure 14 can be located on the side of the notch 131, and the The top plate 12 can be closer to the assembly structure 14 than the bottom plate 11, and the assembly structure 14 can have at least one first positioning portion 141, and the first positioning portion 141 can be in the form of a hole, a bump or a groove, for example. , in this embodiment, the first positioning portion 141 is described as a groove. In addition, the assembly structure 14 may have two side wall portions 142 located on two sides of the first positioning portion 141 .

The fan wheel 2 is located in the space enclosed by the base plate 11, the top plate 12 and the ring wall 13. The fan wheel 2 can have a hub 21 and several blades 22. The fan wheel 2 can be operated by a motor (not shown in the figure). shown) is driven to rotate.

Please refer to Figures 1 and 2, the limiting member 3 is detachably combined with the assembly structure 14 axially, the limiting member 3 and the ring wall 13 jointly form at least one limiting groove S, and the limiting groove S radially limits a wire L to loosen. Specifically, the limiting member 3 can have a main body 31 and a limiting section 32 connected thereto, the main body 31 can axially align the assembly structure 14, and the free end 32a of the limiting section 32 can abut against the The notch 131 enables the limiting section 32 to be surrounded by the ring wall 13 to jointly form the limiting groove S, the limiting groove S can be accommodated by the wire L, and the wire L can be connected to an external power supply Or a control signal, the external power supply or the control signal can supply power to the cooling fan through the wire L.

Please refer to Figures 1, 2, and 3, the limiting member 3 may have a first surface 3a and a second surface 3b opposite to each other, the first surface 3a faces the top plate 12, and the second surface 3b faces the In the bottom plate 11 , the first surface 3 a is preferably flush with the outer surface 12 a of the top plate 12 . In addition, the limiting part 3 can have two buckle parts 33, the two buckle parts 33 can be connected to the body 31, the two buckle parts 33 can be located on one side of the second surface 3b, the limiting part 3 is combined with the assembly structure At 14 o'clock, the two buckle parts 33 are located on both sides of the two side wall parts 142, and the two buckle parts 33 enable the limiting member 3 to be combined from the outside of the assembly structure 14, and the two buckle parts 33 can be buckled and combined with the The bottom edge of the assembly structure 14 .

Please refer to Figures 1 and 3, and the limiting member 3 has at least one second positioning portion 34, which can be connected to the body 31, and the second positioning portion 34 can be located on the second surface 3b, the second positioning part 34 can be combined with the first positioning part 141, thereby, when the limiting part 3 is combined with the assembly structure 14, it can prevent the limiting part 3 from facing the radial direction X. The assembled structure 14 is displaced. Wherein, the shape and form of the second positioning part 34 are based on the principle of being able to match and combine with the first positioning part 141, and the present invention is not limited thereto, nor is it limited by the drawings disclosed in this embodiment. For example, the second positioning portion 34 can be in the form of a hole, a bump or a groove. In this embodiment, the second positioning portion 34 is described as a bump, so , the first The second positioning part 34 can be easily combined with the first positioning part 141, which can improve the convenience of assembly.

Please refer to Figures 1 and 2, when assembling the cooling fan of the present invention, first stretch the wire L to the side of the assembly structure 14, and then combine the limiting member 3 with the assembly structure 14 along the axial direction Y , so that the two buckle parts 33 can be fastened and combined with the bottom edge of the assembly structure 14, and the limiting groove S is formed by the limiting member 3 and the ring wall 13 together, so that the wire L can be accommodated in the limiting Slot S. In this way, the wire L can be restricted in the limiting groove S, and the wire L can be prevented from loosening or falling out of the limiting groove S, thereby preventing the wire L from being pinched and avoiding Poor contact or open circuit occurs.

Please refer to Figure 4, which is the second embodiment of the cooling fan of the present invention. The second embodiment of the present invention is substantially the same as the above-mentioned first embodiment, and the main difference is: the second embodiment of the present invention The radiating fan system is described as a series fan, which is connected by the aforementioned two fan frames 1, and the wire L can pass through the joint of the two fan frames 1.

Specifically, the two fan frames 1 can be snapped together by their respective bottom plates 11, the two fan frames 1 can respectively have a top plate 12, the ring wall 13 is located between the two top plates 12, and the number of the fan wheels 2 For two, the two fan wheels 2 can be located in the space enclosed by the two top plates 12 and the ring wall 13, so that the distance between the two top plates 12 is far apart, and the overall axial height of the cooling fan is relatively high. Large, the limiting member 3 can be combined with the assembly structure 14, so that the limiting member 3 and the ring wall 13 jointly form the limiting slot S, and then the wire L can be accommodated in the limiting slot S, It can surely prevent the wire L from getting loose or falling out from the limiting slot S. In other embodiments, the wires L passing through the joints of the two fan frames 1 can also be two as shown in Figure 5, and the two wires L can be accommodated in the limiting slot S at the same time, so that The two wires L can pass through from the same side, which can also prevent the two wires L from getting loose or falling out of the limiting slot S.

Please refer to Figure 6, which is the third embodiment of the cooling fan of the present invention. The third embodiment of the present invention is substantially the same as the above-mentioned second embodiment. The main difference is: the first embodiment of the present invention Third Embodiment The number of the limiting parts 3 is two, and the two limiting parts 3 are respectively combined with the second assembly structure 14 of the fan frame 1, so that the two limiting parts 3 and the ring wall 13 respectively form two limiting parts. Slot S, the two wires L can be accommodated in the two limiting slots S respectively, so that the two wires L can pass through from different sides, which can prevent the two wires L from loosening or being released by the two limiting slots S. drop.

Please refer to Figure 7, which is the fourth embodiment of the cooling fan of the present invention. The fourth embodiment of the present invention is substantially the same as the above-mentioned first embodiment, and the main difference is: the fourth embodiment of the present invention. The limiting member 3 can have two limiting sections 32, the two limiting sections 32 are connected to both sides of the body 31, and the free ends of the two limiting sections 32 can abut against the two notches 131 of the ring wall 13 respectively , so that the two limiting sections 32 can surround the ring wall 13 to form two limiting slots S; in this way, when assembling the fan frame 1 to a system, the wire L can be selected to be accommodated in the One of the two limit slots S can prevent parts in the system from touching the wire L, and can improve the convenience of assembly.

Also, in this embodiment, the number of the first positioning portion 141 can be two, and the number of the second positioning portion 34 can also be two, and the two second positioning portions 34 can be combined with the two first positioning portions. The positioning portion 141 , whereby when the limiting member 3 is combined with the assembly structure 14 , it can further prevent the limiting member 3 from being displaced relative to the assembly structure 14 along the radial direction X.

In addition, the connection between the main body 31 and the two limiting sections 32 can respectively have an arc guide portion 35, when the wire L is located in the limiting slot S and the wire L is pulled, it is less likely to generate shear force and cause The problem of cracking of the limiting section 32 can improve the service life of the limiting member 3 .

Please refer to Figure 8, which is the fifth embodiment of the cooling fan of the present invention. The fifth embodiment of the present invention is substantially the same as the above-mentioned second embodiment. The main difference is: the fifth embodiment of the present invention. The number of assembly structures 14 may be two, and the two assembly structures 14 may be respectively located adjacent to the two top plates 12 , and the limiting member 3 may be combined with one of the assembly structures 14 . In detail, the limiting member 3 can have two limiting sections 32 connected to both sides of the main body 31, the The free ends 32a of the two spacer sections 32 can abut against the two notches 131 of the ring wall 13 respectively, so that the two spacer sections 32 can be connected with the ring wall 13 to form two spacer slots S, the two spacers The wires L can be accommodated in the two limiting slots S respectively, which can prevent the two wires L from loosening or falling out of the two limiting slots S.

To sum up, in the heat dissipation fan of the present invention, the assembly structure is detachably combined with the limiting member, and the limiting member and the ring wall jointly form at least one limiting groove, so that the wire can be limited in the limiting No matter in the process of assembling the cooling fan or the rotation of the fan wheel, the wire can be prevented from loosening or falling out of the limiting slot, thereby preventing the wire from being pinched, and reducing poor contact or The situation of open circuit occurs, thereby, it has the effect of improving the convenience of use and prolonging the service life of the cooling fan.

Although the present invention has been disclosed by using the above-mentioned preferred embodiments, it is not intended to limit the present invention. It is still within the scope of this invention for anyone skilled in the art to make various changes and modifications relative to the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall include all changes within the meaning and equivalent scope described in the appended scope of application. In addition, when the above-mentioned several embodiments can be combined, the present invention includes any combination of implementation aspects.

1: fan frame

11: Bottom plate

12: Top plate

12a: Outer surface

13: ring wall

131: Notch part

14: Assembly structure

141: The first positioning department

142: side wall

2: fan wheel

21: hub

22: blade

3: Limiting parts

3a: first surface

3b: Second surface

31: Ontology

32: limit section

32a: free end

33: buckle

34:Second positioning department

L: wire

X: radial direction

Y: axis direction

Claims (8)

A cooling fan, comprising: a fan frame with a surrounding wall, an assembly structure of the fan frame is connected to the surrounding wall, the assembly structure has at least one first positioning part; a fan wheel is rotatably located in the fan frame; and a limiting member, detachably combined with the assembly structure axially, the limiting member has a first surface and a second surface opposite, the limiting member has at least one second positioning portion located on the second surface On one side, the at least one second positioning portion is combined with the at least one first positioning portion, the limiting member has a connected body and a limiting section, the main body is axially aligned with the assembly structure, the limiting member and The surrounding walls jointly form at least one limiting groove, and the limiting groove is used for radially limiting a wire from loosening. The heat dissipation fan according to claim 1, wherein the ring wall has a notch, and the free end of the limiting section abuts the notch. The heat dissipation fan according to claim 1, wherein the connection between the main body and the limiting section has an arc guide portion. The heat dissipation fan according to claim 1, wherein the limiting member has a first surface and a second surface opposite to each other, and the limiting member has two buckles located on one side of the second surface, and the two buckles are combined with the Assemble the structure. The cooling fan according to claim 4, wherein the assembly structure has two side wall parts, and the two buckle parts are connected to the two side wall parts by two sides of the assembly structure. The cooling fan according to claim 1, wherein the fan frame has a top plate, the limiting member has a first surface and a second surface opposite to each other, and the first surface is flush with an outer surface of the top plate. The heat dissipation fan according to claim 1, wherein the limiting member has two limiting sections connected to two sides of a body, and the two limiting sections surround the ring wall to form two limiting grooves. Such as the cooling fan of claim 1, wherein, the number of the fan frame and the fan wheel is two, and the two fan frames have a top plate respectively, the ring wall is connected between the two top plates, and the two fan wheels are located on the two top plates And in the space enclosed by the ring wall, the number of the limiting parts is one or two.

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