CN107781225B

CN107781225B - Series fan structure

Info

Publication number: CN107781225B
Application number: CN201610712927.7A
Authority: CN
Inventors: 林仪汶; 吴志辉; 谢明凯
Original assignee: Delta Electronics Inc
Current assignee: Delta Electronics Inc
Priority date: 2016-08-24
Filing date: 2016-08-24
Publication date: 2020-11-17
Anticipated expiration: 2036-08-24
Also published as: CN107781225A

Abstract

The invention discloses a tandem fan structure, which comprises a first frame body and a second frame body. The first frame body is provided with a first joint surface and a protruding structure, the protruding structure is arranged at the outer edge of the first joint surface, and a first bump and a second bump are formed on a first surface of the protruding structure facing the first joint surface. The second frame body is provided with a second joint surface and a groove structure, the second joint surface and the first joint surface are arranged correspondingly, the groove structure is arranged on the side surface of the second frame body, a second surface of the groove structure is matched with the first surface of the protruding structure, a first groove and a second groove are formed, the first groove and the first lug are arranged correspondingly, and the second groove and the second lug are arranged correspondingly.

Description

Series fan structure

Technical Field

The present disclosure relates to fans, and particularly to a series fan.

Background

The series fan is formed by connecting two fans in series through the frame body, so that the two fans have higher static pressure and air quantity. In the prior art, the serial fan is generally designed by using a fastening structure of two fan frames and connecting them together in a rotating manner. However, the snap structure of the rotary connection design is complicated and needs to be assembled manually; in addition, the rotational snap structure is difficult to separate, which easily causes damage to the snap structure. In addition, in the wire arrangement aspect, because the wire arrangement groove is close to the rotating structure, and the wire outlet design of the wires is overlapped with the rotating disassembly and assembly direction, the wires are easily scratched during separation, or the wire is blocked, so that the fan is damaged.

Disclosure of Invention

The invention aims to provide a series fan structure. The series fan structure does not use the existing rotary combination mode, so the series fan structure is easy to combine and disassemble, and the manufacturing and maintenance time can be reduced. In addition, the structure of the frame body after being connected is quite stable, so that the noise during operation can be reduced, and the wind pressure can be improved.

To achieve the above objective, the present invention provides a serial fan structure, which includes a first frame and a second frame. The first frame body is provided with a first joint surface and a protruding structure, the protruding structure is arranged at the outer edge of the first joint surface, and a first surface facing the first joint surface is provided with a first lug and a second lug. In addition, the second frame body is provided with a second joint surface and a groove structure, the second joint surface and the first joint surface are correspondingly arranged, the groove structure is arranged on the side surface of the second frame body, a second surface of the groove structure is matched with the first surface of the protruding structure, a first groove and a second groove are formed, the first groove and the first bump are correspondingly arranged, and the second groove and the second bump are correspondingly arranged.

In an embodiment, a guiding groove is further formed on the second surface of the groove structure, and the guiding groove is used for guiding the first bump. The guiding groove is provided with an opening facing the first frame body, the first bump is provided with a protruding part facing the second frame body, and the maximum width of the opening is larger than or equal to the minimum width of the protruding part. In addition, the first lug is also provided with a main body part connected with the protruding part, and the cross section width of the main body part is the same as that of the guide groove. In addition, the side surface of the second frame body adjacent to the second joint surface is also provided with a wire outlet and a third groove, and the wire outlet and the third groove are arranged adjacently.

In addition, the invention further provides a serial fan structure, which comprises a first frame body and a second frame body. The first frame body is provided with a first joint surface and four protruding structures, the four protruding structures are arranged at the outer edge of the first joint surface, and a first connecting part is respectively formed on one surface of each protruding structure facing the first joint surface. In addition, the second frame body is provided with a second bonding surface which is octagonal, the second bonding surface is arranged corresponding to the first bonding surface, the second frame body is also provided with eight continuous side surfaces, the odd-numbered side surfaces of the eight side surfaces are respectively matched with the surfaces of the four protruding structures, second connecting parts are respectively formed, and the second connecting parts are arranged corresponding to the first connecting parts.

In one embodiment, the first connecting portion includes a first bump, and the second connecting portion includes a first recess disposed corresponding to the first bump. In one embodiment, the first connection portion includes a first bump and a second bump, the second connection portion includes a first recess and a second recess, the first recess is disposed corresponding to the first bump, and the second recess is disposed corresponding to the second bump.

In an embodiment, the odd-numbered sides of the eight sides are further respectively formed with a guiding slot for guiding the first bump. The guiding groove is provided with an opening facing the first frame body, the first bump is provided with a protruding part facing the second frame body, and the maximum width of the opening is larger than or equal to the minimum width of the protruding part. In addition, one of the odd-numbered side surfaces of the eight side surfaces is also provided with a wire outlet and a third groove which are adjacent to the second joint surface, the wire outlet and the third groove are arranged adjacently, and the wire outlet and the third groove are respectively arranged adjacently to the second connecting part.

In addition, the invention further provides a serial fan structure, which comprises a first frame body and a second frame body. The first frame body is provided with a first joint surface and at least two protruding structures, the two protruding structures are arranged at the outer edge of the first joint surface, and a first connecting part is respectively formed on one surface of the two protruding structures facing the first joint surface. In addition, the second frame body is provided with a second joint surface, the second joint surface is provided with at least six sides, the second frame body is provided with at least six side surfaces corresponding to the six side surfaces, two side surfaces of the six side surfaces are respectively matched with the surfaces of the two protruding structures and respectively provided with a second connecting part, and the second connecting part is arranged corresponding to the first connecting part.

In an embodiment, the two side surfaces are further respectively formed with a guiding groove for guiding the first bump. The guiding groove is provided with an opening facing the first frame body, the first bump is provided with a protruding part facing the second frame body, and the maximum width of the opening is larger than or equal to the minimum width of the protruding part. In addition, one of the two side surfaces is also provided with a wire outlet and a third groove which are adjacent to the second joint surface, the wire outlet and the third groove are arranged adjacently, and the wire outlet and the third groove are respectively arranged adjacently to the second connecting part.

As mentioned above, in the serial fan structure of the present invention, the first frame and the second frame are designed to be connected without using the conventional rotation combination method. Therefore, the series fan structure of the invention has the advantages of easy assembly and disassembly and capability of reducing the manufacturing and maintenance time. In addition, the structure of the two connected frames is stable, so that the noise during operation can be reduced, and the wind pressure of the serial fan can be improved.

Drawings

Fig. 1A, fig. 1B and fig. 2 are an assembly schematic view and an exploded schematic view of a serial fan structure according to a preferred embodiment of the invention.

Fig. 3A and 3B are enlarged schematic views of different protruding structures of fig. 2.

Fig. 3C is an enlarged schematic view of the groove structure of fig. 2.

FIG. 4 is another schematic diagram of a serial fan structure according to a preferred embodiment of the invention.

Wherein the reference numerals are as follows:

1 series fan structure

11 first frame body

111 first bump

112 second bump

113 outlet

12 second frame body

121 first groove

122 second groove

123 guide groove

124 outlet

125 third groove

13 Fan Assembly

131 rotor

132 stator

133 copper sleeve

134 impeller

C1 first connection part

C1' first connection part

C2 second connecting part

Second connecting part of C2

E1 side surface

E2 side surface

E3 side surface

E4 side surface

E5 side surface

E6 side surface

E7 side surface

E8 side surface

S1 first joint surface

S2 second joint surface

Surface of S3

Surface of S4

T1 projection structure

T1' projection structure

T2 groove structure

T2' groove structure

Detailed Description

The fan structure of the present invention will be described with reference to the accompanying drawings, wherein like elements are designated by like reference numerals. The drawings of all embodiments of the invention are schematic and do not represent actual dimensions or proportions. In addition, the orientations "upper" and "lower" referred to in the following description of the embodiments are merely used to indicate relative positional relationships. Further, the formation of an element "on," "over," "under," or "beneath" another element may include direct contact between one element and another element in embodiments, or may also include other additional elements between one element and another element such that one element and another element are not in direct contact.

Fig. 1A, fig. 1B and fig. 2 are a combination schematic view and an exploded schematic view of a serial fan structure 1 according to a preferred embodiment of the present invention. Fig. 1A is an assembled view, and fig. 1B and fig. 2 are exploded views.

The fan structure 1 of the present embodiment includes a first frame 11 and a second frame 12. In addition, the fan structure 1 further includes at least one fan assembly 13. The material of the first frame 11 and the second frame 12 is, for example, but not limited to, plastic or metal (e.g., aluminum or aluminum alloy).

The first frame 11 has a first joint surface S1 and at least two protruding structures, and the two protruding structures are disposed on the outer edge of the first joint surface S1. A first connecting portion is formed on a surface of each protruding structure facing the first engaging surface S1. In the present embodiment, as shown in fig. 2, the first frame 11 has four protruding structures, and the protruding structures include three protruding structures T1 with the same structure and another protruding structure T1' different from the protruding structure T1. The protrusion structures T1 and T1 'are disposed at the outer edge of the first bonding surface S1 and distributed at four corners, and each of the protrusion structures T1 and T1' has a surface S3 facing the first bonding surface S1, and a first connection portion C1 is formed on the surface S3 of each protrusion structure T1, and a first connection portion C1 'is also formed on the surface S3 of the protrusion structure T1' (not shown).

Please refer to fig. 3A, which is an enlarged view of the protrusion structure T1 of fig. 2. Herein, the first connection portion C1 of the protrusion structure T1 includes a first bump 111 and a second bump 112, and the second bump 112 is a straight bar.

In addition, please refer to fig. 3B, which is an enlarged schematic view of the protrusion structure T1' of fig. 2. Here, the first connection portion C1 'of the protruding structure T1' includes only one first bump 111 and does not include the second bump 112.

In addition, the second frame 12 has a second joint surface S2, the second joint surface S2 has at least six sides, and the second frame 12 has at least six side surfaces corresponding to the six sides, two of the six side surfaces are substantially matched with the surfaces of the at least two protruding structures, respectively. Wherein, a second connecting portion is formed on each of the two side surfaces, and the second connecting portion of the second frame 12 is disposed corresponding to the first connecting portion of the first frame 11.

In the present embodiment, as shown in fig. 2, the second frame 12 has a second joint surface S2 substantially, for example, but not limited to, being an octagon, and the second joint surface S2 is disposed corresponding to the first joint surface S1 of the first frame 11. In other words, when the first frame 11 and the second frame 12 are coupled, the shape of the first joint surface S1 and the shape of the second joint surface S2 are matched and matched with each other, and the two can be closely attached together. The side surface of the second frame 12 of the present embodiment is substantially an octahedron as an example, however, in different embodiments, the side surface of the second frame 12 may also be a hexahedron or a heptahedron, or other, and is not limited.

The second frame 12 of the present embodiment has eight continuous side surfaces E1 to E8. Among them, the odd-numbered sides E1, E3, E5, E7 (in different embodiments, the even-numbered sides E2, E4, E6, E8) of the eight sides E1-E8 are substantially matched with the surfaces S3 of the four protruding structures T1, T1' of the first frame 11, respectively. Specifically, in order to firmly connect the first frame 11 and the second frame 12, each of the odd-numbered side surfaces E1, E3, E5 in the present embodiment has a groove structure T2, the side surface E7 has a groove structure T2 ', a second connecting portion C2 is formed on the surface S4 of the groove structure T2, and a second connecting portion C2 ' is formed on the surface S4 of the groove structure T2 '. Here, the groove structure T2 is disposed corresponding to the protrusion structure T1, the groove structure T2 'is disposed corresponding to the protrusion structure T1', and the second connection portions C2 and C2 'of the groove structures T2 and T2' are disposed corresponding to the first connection portions C1 and C1 'of the corresponding protrusion structures T1 and T1', respectively.

Fig. 3C is an enlarged schematic view of the groove structure T2 in fig. 2. The second connecting portion C2 of the groove structure T2 of the present embodiment includes a first groove 121 and a second groove 122, and the first groove 121 is disposed corresponding to the first bump 111 of the protrusion structure T1, and the second groove 122 is disposed corresponding to the second bump 112 of the protrusion structure T1. Here, the second groove 122 is a straight groove and is disposed corresponding to the straight second bump 112.

In addition, as shown in fig. 2 and fig. 3B, the second connection portion C2 'of the groove structure T2' includes only one first groove 121 and does not include the second groove 122, and the first groove 121 of the second connection portion C2 'is also disposed corresponding to the first bump 111 of the protrusion structure T1'.

In addition, in the present embodiment, the second connecting portions C2 and C2' of the side surfaces E1, E3, E5 and E7 are respectively formed with one guiding groove 123, and the guiding groove 123 is used as the first guiding protrusion 111. As the name implies, the guiding groove 123 is provided to guide the first protrusion 111 when the first frame 11 and the second frame 12 are combined.

Referring to fig. 3A and 3C, the guiding slot 123 has an opening O facing the first frame 11, the first bump 111 has a protrusion 1111 facing the second frame 12, and the maximum width d1 of the opening O is greater than or equal to the minimum width d2 of the protrusion 1111 (d1 ≧ d 2). The maximum width d1 of the opening O in the present embodiment is larger than the minimum width d2 of the protrusion 1111. The guide groove 123 is provided to facilitate alignment when the first housing 11 and the second housing 12 are combined. Here, the maximum width d1 of the opening O is greater than the minimum width d2 of the protrusion 1111, so that the first protrusion 111 can enter the guiding slot 123 more easily, and the second protrusion 112 can enter the second groove 122 easily and aligned, so that the connection between the two can be fastened more firmly.

In addition, the first protrusion 111 further has a body portion 1112 connected to the protrusion portion 1111, and a cross-sectional width d3 of the body portion 1112 is substantially the same as a cross-sectional width d4 of the guide groove 123. Therefore, when the first frame 11 is connected to the second frame 12, the first protrusion 111 is inserted into the guiding groove 123 to guide the first protrusion 111 downward, and the cross-sectional width d3 of the main body 1112 is substantially the same as the cross-sectional width d4 of the guiding groove 123, so that the positioning can be reliably achieved, and the skew phenomenon is not generated in the combining process.

In addition, as shown in fig. 2, the side E7 of the second frame 12 adjacent to the second joint surface S2 further has a wire outlet 124 and a third groove 125, the wire outlet 124 is disposed adjacent to the third groove 125, and the wire outlet 124 and the third groove 125 are disposed adjacent to the second connecting portion C2 (groove structure T2'). In the present embodiment, in order to provide the outlet 124 and the third groove 125, the groove structure T2 'does not provide the second groove 122, so that the corresponding protrusion structure T1' does not need to provide the second bump 112.

By providing the outlet 124, the wire of the coil provided in the second frame 12 can be drawn out, and the wire can be drawn out from the outlet 124 and then extended downward through the third groove 125. Through the design of the wire outlet 124 and the third groove 125, when the first frame 11 and the second frame 12 are combined and then relatively moved in the horizontal direction to be separated, the wire can pass through the third groove 125 (the third groove 125 can be referred to as a wire avoiding groove) to avoid the protruding structure T1', so that the wire does not collide with the first frame 11 during the separation process, thereby improving the problem of wire scratching or wire clamping.

In addition, the first frame 11 of the present embodiment further has another outlet 113 on a side surface adjacent to the protruding structure T1' and corresponding to the outlet 124. Here, when the first housing 11 and the second housing 12 are coupled, the two

outlets

113 and 124 are disposed adjacent to each other. The coil wire disposed in the first frame 11 can be led out from the outlet 113.

In addition, referring to fig. 1B again, the fan assembly 13 may be disposed in the first frame 11 or the second frame 12. In some embodiments, the fan assembly 1 may include a fan assembly 13; in other embodiments, the fan assembly 1 may include two fan assemblies 13 respectively disposed in the first frame 11 and the second frame 12, which is not limited in the invention. The fan assembly 13 may include a motor (having a rotor 131 and a stator 132), a copper sleeve 133, and a fan wheel 134 (having blades), wherein the stator 132 is disposed on the copper sleeve 133, and the rotor 131 and the stator 132 are disposed correspondingly.

Fig. 4 is another schematic view of the tandem fan structure 1 shown in fig. 2.

When the first frame 11 is connected to the second frame 12, the first frame 11 and the second frame 12 need to move vertically and relatively, such that the first joint surface S1 is attached to the second joint surface S2, the three protrusion structures T1 of the first frame 11 respectively correspond to the three groove structures T2 of the second frame 12, and the protrusion structure T1 'of the first frame 11 corresponds to the groove structure T2' of the second frame 12.

In the protrusion structure T1, the first protrusion 111 is vertically inserted into the guiding slot 123 of the groove structure T2 and moves downward along the guiding slot 123 (is positioned by the guiding slot 123), and then the first protrusion 111 leaves the guiding slot 123 and enters the first groove 121 in a vertical manner, and at the same time, the second protrusion 112 is also vertically inserted into the second groove 122 by the guiding of the guiding slot 123 until the first protrusion 111 is locked in the first groove 121 and the second protrusion 112 is locked in the second groove 122; in the protrusion structure T1 ', the first protrusion 111 is vertically inserted into the guiding slot 123 of the groove structure T2' in the same manner and moves downward along the guiding slot 123, and then vertically enters the first groove 121 to be locked in the first groove 121.

Therefore, as long as the first frame 11 and the second frame 12 are vertically aligned and relatively move in the vertical direction, the first protrusions 111 are respectively fastened to the corresponding first grooves 121, and the second protrusions 112 are respectively fastened to the second grooves 122, so that the serial fan structure 1 after the first frame 11 and the second frame 12 are connected is quite stable, and therefore, the serial fan structure 1 has the advantages of being easy to assemble, reducing manufacturing and maintenance time, improving the yield of the finished products of the serial fan structure 1, and reducing operation noise.

In addition, when the first frame 11 is separated from the second frame 12, as shown by the arrow on the side surface of the second frame 12, as long as the first frame 11 and the second frame 12 move relatively along the horizontal direction, for example, the second frame 12 moves to the left and/or the first frame 11 moves to the right, so that the first protrusion 111 is separated from the first groove 121 toward the left, and the second protrusion 112 is separated from the second groove 122 toward the left, the first frame 11 and the second frame 12 can be separated from each other up and down. Therefore, the tandem fan structure 1 is also easy to disassemble.

In addition, in the disassembling process, through the design of the third groove 125 beside the groove structure T2 ', when the first frame 11 and the second frame 12 are moved relatively in the horizontal direction and separated, the wire can avoid the protruding structure T1' through the third groove 125 (the wire avoiding groove), so that the wire does not collide with the first frame 11, thereby improving the problem of wire scratching or wire clamping.

More particularly, the fan structure 1 of the present embodiment is exemplified by four protruding structures (four first connecting portions) and four recessed structures (four second connecting portions), but not limited thereto, in different embodiments, only one protruding structure (two first connecting portions in total) may be respectively disposed on two opposite sides of the first frame 11, and two corresponding recessed structures (two second connecting portions in total, and the second joint surface has six sides) may also be disposed on the corresponding position of the second frame 12, so that the first frame and the second frame can be stably connected together through the first connecting portions and the second connecting portions, thereby achieving the purpose of the present invention; alternatively, the first frame 11 is provided with three protruding structures (three first connecting portions), and the second frame 12 is also provided with three corresponding groove structures (three second connecting portions, and the second joint surface has seven sides), which are not limited in the present invention.

In summary, in the serial fan structure of the present invention, the first frame and the second frame are designed such that the serial fan structure of the present invention does not need to be connected by the conventional rotation combination method. Therefore, the series fan structure of the invention has the advantages of easy assembly and disassembly and capability of reducing the manufacturing and maintenance time. In addition, the structure of the two connected frames is stable, so that the noise during operation can be reduced, and the wind pressure of the serial fan can be improved.

The foregoing is by way of example only, and not limiting. It is intended that all equivalent modifications or variations without departing from the spirit and scope of the present invention shall be included in the scope of the appended claims.

Claims

1. A tandem fan structure, comprising:

a first frame body having a first joint face and a plurality of protruding structures, the protruding structures being disposed at an outer edge of the first joint face, the plurality of protruding structures including a first protruding structure, the remaining protruding structures being second protruding structures, a first bump being formed on a first surface of the first protruding structure, and a first bump and a second bump being formed on a first surface of the second protruding structure facing the first joint face; and

a second frame body having a second joint face and a plurality of groove structures, the second joint face corresponding to the first joint face, the groove structures being disposed on the side face of the second frame body, a second surface of the groove structures substantially matching the first surface of the protrusion structures, the plurality of groove structures including a first groove structure, the remainder being second groove structures, the first groove structure forming a first groove, the second groove structure forming a first groove and a second groove, the first groove of the first groove structure corresponding to the first bump of the first protrusion structure, the first groove of the second groove structure corresponding to the first bump of the second protrusion structure, and the second groove of the second groove structure corresponding to the second bump of the second protrusion structure;

the fan structure is configured to be fastened to the first groove and the second groove through the first bump and the second bump respectively without relative rotation of the first frame and the second frame, so that the first frame and the second frame are connected;

the fan structure is configured to move the first frame and the second frame relatively in a horizontal direction, so that the first bump is separated from the first groove, and the second bump is separated from the second groove, so that the first frame is separated from the second frame;

the side surface of the second frame body, which is adjacent to the second joint surface, is provided with a wire outlet and a third groove, the wire outlet and the third groove are arranged adjacently, and the wire outlet and the third groove are respectively arranged adjacently to the first groove structure.

2. The fan structure of claim 1, wherein a guiding groove is formed on the second surface of the recess structure for guiding the first bump.

3. The fan assembly of claim 2, wherein the guiding slot has an opening facing the first frame, the first protrusion has a protrusion facing the second frame, and the maximum width of the opening is greater than or equal to the minimum width of the protrusion.

4. The fan structure of claim 3, wherein the first protrusion further has a main body connected to the protrusion, and the main body has a cross-sectional width equal to that of the guiding slot.

5. A tandem fan structure, comprising:

the first frame body is provided with a first joint surface and four protruding structures, the four protruding structures are arranged at the outer edge of the first joint surface, and a first connecting part is respectively formed on one surface of each protruding structure facing the first joint surface; and

the second frame body is provided with a second bonding surface which is octagonal, the second bonding surface is arranged corresponding to the first bonding surface, the second frame body is also provided with eight continuous side surfaces, the odd-numbered side surfaces of the eight side surfaces are respectively matched with the surfaces of the four protruding structures, the odd-numbered side surfaces of the eight side surfaces are respectively provided with a second connecting part, and the second connecting part is arranged corresponding to the first connecting part;

the fan structure is configured to be fastened to the four second connecting portions through the four first connecting portions respectively without relative rotation of the first frame body and the second frame body, so that the first frame body and the second frame body are connected;

the fan structure is configured to separate the first frame body from the second frame body by moving the first frame body and the second frame body relatively in a horizontal direction to separate the first connection part from the second connection part and separate the first connection part from the second connection part;

one of the odd-numbered side surfaces of the eight side surfaces is also provided with a wire outlet and a third groove which are adjacent to the second joint surface, the wire outlet and the third groove are adjacently arranged, and the wire outlet and the third groove are respectively adjacently arranged with the second connecting part.

6. The fan structure of claim 5, wherein the first connecting portion comprises a first protrusion, the second connecting portion comprises a first recess corresponding to the first protrusion, or the first connecting portion comprises a first protrusion and a second protrusion, the second connecting portion comprises a first recess corresponding to the first protrusion, and a second recess corresponding to the second protrusion.

7. The fan structure of claim 6, wherein the odd-numbered sides of the eight sides further have a guiding groove for guiding the first bump.

8. The fan assembly of claim 7, wherein the guiding slot has an opening facing the first frame, the first protrusion has a protrusion facing the second frame, and the maximum width of the opening is greater than or equal to the minimum width of the protrusion.

9. A tandem fan structure, comprising:

the first frame body is provided with a first joint surface and at least two protruding structures, the two protruding structures are arranged at the outer edge of the first joint surface, and a first connecting part is respectively formed on one surface of each protruding structure facing the first joint surface; and

the second frame body is provided with a second joint surface, the second joint surface is provided with at least six side edges, the second frame body is provided with at least six side surfaces corresponding to the six side edges, two side surfaces of the six side surfaces are respectively matched with the surfaces of the two protruding structures, two side surfaces of the six side surfaces are respectively provided with a second connecting part, and the second connecting parts are arranged corresponding to the first connecting parts;

the fan structure is configured to be fastened to the second connecting portions through the first connecting portions respectively without rotating the first frame body and the second frame body relatively, so that the first frame body is connected with the second frame body;

the fan structure is configured to move the first frame and the second frame relatively in a horizontal direction to separate the first connection portion from the second connection portion, thereby separating the first frame from the second frame;

one of the two side surfaces is also provided with a wire outlet and a third groove which are adjacent to the second joint surface, the wire outlet and the third groove are adjacently arranged, and the wire outlet and the third groove are respectively adjacently arranged with the second connecting part.

10. The fan structure of claim 9, wherein the first connecting portion comprises a first protrusion, the second connecting portion comprises a first recess corresponding to the first protrusion, or the first connecting portion comprises a first protrusion and a second protrusion, the second connecting portion comprises a first recess corresponding to the first protrusion, and a second recess corresponding to the second protrusion.

11. The fan structure of claim 10, wherein the two side surfaces further have a guiding groove formed thereon for guiding the first protrusion.

12. The fan structure of claim 11, wherein the guiding slot has an opening facing the first frame, the first protrusion has a protrusion facing the second frame, and the maximum width of the opening is greater than or equal to the minimum width of the protrusion.