Fan structure convenient to disassemble

Abstract

The fan structure convenient to disassemble comprises a machine head assembly and a mesh enclosure assembly, the machine head assembly comprises a machine shell, the mesh enclosure assembly comprises a rear cover, a plurality of positioning insertion holes penetrating front and back are formed in the front end face of the machine shell, and locking insertion columns are arranged at the positions, corresponding to the positioning insertion holes, of the rear cover. A locking assembly locked with the locking insertion column is installed in the machine shell. According to the technical scheme, when the rear cover needs to be disassembled, only the locking assembly and the locking inserting column need to be driven to be separated and unlocked, the locking inserting column can be separated from the positioning inserting hole, the rear cover can be taken down from the machine shell, and compared with existing threaded connection, rapid disassembly is achieved, and the problems of thread slipping, loosening and shaking in threaded connection can be solved.

Description

Technical Field

[0001] The invention relates to a fan structure which is easy to disassemble. Background Art

[0002] Prior art, such as Chinese invention patent document, with announcement number CN206246393U, discloses a connection structure between a fan cover and a machine head and a fan using the connection structure. The connection structure between the fan cover and the machine head includes a fan cover and a machine head, the fan cover includes a front cover net and a rear cover net connected to each other, one of the rear cover net and the machine head is provided with a mounting shaft, and the other is provided with a mounting hole, and the mounting shaft is threadedly connected to the mounting hole. The rear cover net and the machine head of the fan of the present invention are easy to install, and the rear cover net can be firmly connected to the machine head without other parts, and the installation is stable and reliable.

[0003] Based on the above, in the prior art, the fan cover is installed on the machine head by threaded connection. Although this installation structure is easy to disassemble, the disadvantage of threaded connection is that after being tightened and fixed, a large external force is required to loosen and disassemble, which is not friendly to users with weak strength at some times. In addition, threaded connection also has the problem of thread slippage, resulting in inability to install, and loosening due to shaking or insufficient tightening. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a fan structure that is easy to disassemble and improves installation stability.

[0005] A fan structure designed for easy disassembly according to this purpose includes a head assembly and a mesh cover assembly, the head assembly includes a casing, the mesh cover assembly includes a rear cover, a front end surface of the casing is provided with a plurality of positioning holes extending front to back, a locking pin is provided at a position on the rear cover corresponding to the positioning pin, and a locking assembly for locking with the locking pin is installed in the casing.

[0006] Preferably, a locking groove is provided at the rear end of the locking pin, and the locking assembly includes a locking piece which is movably arranged relative to the casing and can be inserted into the locking groove. A spring for constraining the position of the locking piece is provided in the casing, and a pressing piece for pressing to trigger is also connected to the locking piece.

[0007] Preferably, the positioning holes and the locking pins are evenly distributed along the circumference of the rotation axis of the motor.

[0008] Preferably, a guide hole is provided on the locking member, a guide column for inserting into the guide hole is provided in the housing, and an anti-detachment bolt for preventing the guide column from detaching from the guide hole is threadedly connected in the guide hole.

[0009] Preferably, a pressing hole is provided on the housing, and the pressing member is movably disposed in the pressing hole.

[0010] Preferably, the locking member is arranged to move up and down relative to the casing.

[0011] Preferably, the casing is hollow inside and has an opening at the front end, a cover is installed at the front end of the casing, and the positioning socket is arranged on the cover.

[0012] Preferably, the housing is equipped with a motor, the motor shaft of the motor passes through the housing and extends forward, and a driving head is installed on the motor shaft of the motor;

[0013] A front cover is installed on the front side of the rear cover, and fan blades are provided between the rear cover and the front cover. The fan blades are fixedly connected to a transmission shaft, and the rear end of the transmission shaft extends backward through the rear cover. A driven head coupled with the driving head is installed at the rear end of the transmission shaft.

[0014] Preferably, the rear cover is provided with an annular mounting portion, a transmission bearing is provided inside the annular mounting portion, an outer ring of the transmission bearing is fixedly connected to the annular mounting portion, and the transmission shaft is inserted into an inner ring of the transmission bearing.

[0015] Preferably, an annular limiting portion is further provided at the front end of the annular mounting portion, and a sealing ring is further provided between the annular limiting portion and the front end surface of the transmission bearing.

[0016] Preferably, the rear end of the transmission shaft is fixed to the driven head by a threaded connection.

[0017] Preferably, a coupling cavity is provided on the rear side of the annular mounting portion, and the driven head is located in the coupling cavity.

[0018] The present invention has the advantages of simple and reasonable structure, easy disassembly and assembly, and good installation stability. Compared with the existing technology, it includes a head assembly and a mesh cover assembly. The head assembly includes a casing, and the mesh cover assembly includes a rear cover. The front end surface of the casing is provided with a plurality of positioning holes that penetrate front and back, and the rear cover is provided with locking pins at positions corresponding to the positioning holes. The casing is installed with a locking assembly for locking with the locking pins. According to the technical solution, when the rear cover needs to be disassembled, it is only necessary to drive the locking assembly and the locking pins to separate and unlock, so that the locking pins can be disengaged from the positioning holes to remove the rear cover from the casing. Compared with the existing threaded connection, it not only realizes quick disassembly, but also avoids the problems of thread slippage, looseness, and shaking in the threaded connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the planar structure of the fan;

[0020] Figure 2 This is a schematic diagram of the exploded cross-sectional structure of the fan;

[0021] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the present invention;

[0023] Figure 5 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0024] Figure 6 It is a three-dimensional structural schematic diagram of the mesh cover assembly and the locking assembly;

[0025] Figure 7 It is a three-dimensional structural schematic diagram of the cover and the locking assembly;

[0026] Figure 8 Schematic diagram of the exploded structure of the grille assembly. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] See also Figure 1-Figure 8 A fan structure that is easy to disassemble includes a head assembly 10 and a mesh assembly 20, wherein the head assembly 10 includes a casing 110, and the mesh assembly 20 includes a rear cover 210. The front end surface of the casing 110 is provided with a plurality of positioning holes 111 that penetrate front and back, and the rear cover 210 is provided with locking pins 211 at positions corresponding to the positioning holes 111, and a locking assembly 30 for locking with the locking pins 211 is installed in the casing 110.

[0029] See also Figure 2 , Figure 3 , Figure 5 as well as Figure 8 A locking groove 212 is provided at the rear end of the locking pin 211, and the locking assembly 30 includes a locking piece 130 which is movably arranged relative to the housing 110 and can be inserted into the locking groove 212. A spring 140 for constraining the position of the locking piece 130 is provided in the housing 110, and a pressing piece 150 for pressing and triggering is also connected to the locking piece 130.

[0030] See also Figure 2 and Figure 8The rear end of the locking pin 211 is provided with a tapered guide portion 213, and the locking groove 212 is provided at the front side of the tapered guide portion 213. The provision of the tapered guide portion 213 enables the locking pin 211 to be quickly inserted into the positioning socket 111 during the plugging process. At the same time, during the backward plugging movement of the tapered guide portion 213, the tapered guide portion 213 will squeeze the locking member 130, causing the locking member 130 to move relative to the housing 110, so that the locking member 130 leaves the rear of the positioning socket 111. When the locking pin 211 moves backward and the position of the locking groove 212 corresponds to the position of the locking member 130, the locking member 130 has space to return to its original position. At this time, under the action of the spring 140, the spring 140 drives the locking piece 130 to reset, so that the locking piece 130 is inserted into the locking groove 212, so as to constrain the front and rear positions of the locking pin 211 through the locking piece 130 to constrain the front and rear positions of the rear cover 210, thereby completing the locking installation thereof.

[0031] Specifically, the locking groove 212 is an annular groove.

[0032] Preferably, the positioning holes 111 and the locking pins 211 are evenly arranged along the rotation axis of the motor 40. The positioning holes 111 and the locking pins 211 evenly arranged can fully enhance the connection stability between the rear cover 210 and the housing 110.

[0033] See also Figure 6 and Figure 7 The locking member 130 is provided with a guide hole 131, and the housing 110 is provided with a guide column 121 for inserting into the guide hole 131. The guide hole 131 is also threadedly connected with an anti-detachment bolt 160 for preventing the guide column 121 from detaching from the guide hole 131.

[0034] When the locking member 130 moves, the guide column 121 plays a guiding and stabilizing role to ensure that the locking member 130 can only move stably in one direction.

[0035] See also Figure 3 and Figure 7 The housing 110 is provided with a pressing hole 112 , and the pressing member 150 is movably disposed in the pressing hole 112 .

[0036] Specifically, the pressing member 150 includes a pressing portion 153 , a limiting portion 152 and a connecting portion 151 . The mounting portion 153 is movably disposed in the pressing hole 112 , and the limiting portion 152 fits in the interior of the housing 110 to play a limiting role, while the connecting portion 151 is fixedly connected to the locking member 130 .

[0037] See also Figures 1 to 8In the present invention, the preferred moving arrangement of the locking member 130 is: the locking member 130 is moved up and down relative to the housing 110. Of course, it can also be moved left and right. However, the advantage of the up and down moving arrangement over the left and right moving arrangement is that when the up and down moving arrangement is arranged, the pressing member 150 can be arranged at the upper part or the lower part of the housing 110, and these two directions can avoid accidental touch as much as possible.

[0038] See also Figure 3 and Figure 7 The housing 110 is hollow inside and has an opening at the front end. A cover 120 is installed at the front end of the housing 110 , and the positioning socket 111 is arranged on the cover 120 .

[0039] See also Figure 5 The housing 110 is provided with a motor 40, the motor shaft of the motor 40 passes through the housing 110 and extends forward, and the motor shaft of the motor 40 is provided with a driving head 50;

[0040] A front cover 220 is installed on the front side of the rear cover 210, and a fan blade 230 is provided between the rear cover 210 and the front cover 220. The fan blade 230 is fixedly connected to a transmission shaft 240, and the rear end of the transmission shaft 240 extends backward through the rear cover 210. The rear end of the transmission shaft 240 is installed with a driven head 250 coupled to the driving head 50 for transmission.

[0041] The coupling transmission of the driving head 50 and the driven head 250 is an important link to realize quick disassembly. Since the conventional fan blades are connected to the motor shaft by interference or threading, the present invention adopts the coupling transmission mode. During assembly, the driven head only needs to be plugged backward with the driving head to match the housing when the rear cover and the housing are assembled.

[0042] See also Figure 8 The rear cover 210 is provided with an annular mounting portion 214, and a transmission bearing 216 is provided inside the annular mounting portion 214. The outer ring of the transmission bearing 216 is fixedly connected to the annular mounting portion 214, and the transmission shaft 240 is inserted into the inner ring of the transmission bearing 216. The transmission bearing 216 can enhance the rotation stability of the transmission shaft 240 to reduce the abnormal noise generated by the fan blades 230 during the rotation process.

[0043] See also Figure 8 The front end of the annular mounting portion 214 is also provided with an annular limiting portion 217, and a sealing ring 215 is also provided between the annular limiting portion 217 and the front end surface of the transmission bearing 216. The function of the sealing ring 215 is to prevent water from entering the transmission bearing 216 from the front side during disassembly and cleaning, so as to ensure the lubrication state of the bearing and ensure the stability of use.

[0044] Specifically, the rear end of the transmission shaft 240 is fixed to the driven head 250 by threaded connection, and the driving head 50 is fixed to the motor shaft of the motor 40 by threaded connection.

[0045] When the fan blade 230 is disassembled, the driven head 250 needs to be disassembled from the transmission shaft 240 first, and then the fan blade 230 connected to the driven shaft 240 needs to be pulled out from the transmission bearing 216 .

[0046] See also Figure 8 The rear side of the annular mounting portion 214 is provided with a coupling cavity 218, and the driven head 250 is located in the coupling cavity 218. The coupling cavity 218 is provided to allow the driving head 50 and the driven head 250 to have a cavity space for coupling, so as to avoid affecting the assembly of the rear cover 210 and the housing 110.

[0047] Specifically, in the present invention, the rear cover 210 and the front cover 220 are assembled using existing connection methods, such as snap connection or bolt connection.

[0048] See also Figure 3 A micro switch 60 for matching induction with the mesh cover assembly 20 is installed in the housing 110. The micro switch 60 is connected in series with the power line of the motor 40. Before the mesh cover assembly 20 is separated from the housing 110, the micro switch 60 remains in a conducting state. After the mesh cover assembly 20 is disassembled and separated, the micro switch 60 is disconnected and the motor 40 stops working, which can effectively ensure safety.

[0049] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0050] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating the orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0051] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A fan structure that is easy to disassemble, comprising a head assembly (10) and a mesh assembly (20), wherein the head assembly (10) comprises a housing (110), and the mesh assembly (20) comprises a rear cover (210), characterized in that: A plurality of positioning holes (111) extending from front to back are provided on the front face of the housing (110), locking pins (211) are provided at positions on the rear cover (210) corresponding to the positioning holes (111), and a locking assembly (30) for interlocking with the locking pins (211) is installed in the housing (110).

2. The easily disassembled fan structure according to claim 1, characterized in that: A locking slot (212) is provided at the rear end of the locking pin (211); the locking assembly (30) comprises a locking member (130) which is movably arranged relative to the housing (110) and can be inserted into the locking slot (212); a spring (140) is provided in the housing (110) for restraining the position of the locking member (130); and a pressing member (150) for triggering is also connected to the locking member (130).

3. The easily disassembled fan structure according to claim 1, characterized in that: The positioning plug holes (111) and the locking plug posts (211) are evenly distributed along the circumference of the rotation axis of the motor (40).

4. The easily disassembled fan structure according to claim 2, characterized in that: The locking member (130) is provided with a guide hole (131), the housing (110) is provided with a guide column (121) for inserting into the guide hole (131), and an anti-detachment bolt (160) is also threadedly connected in the guide hole (131) for preventing the guide column (121) from detaching from the guide hole (131).

5. The easily disassembled fan structure according to claim 2, characterized in that: The housing (110) is provided with a pressing hole (112), and the pressing member (150) is movably disposed in the pressing hole (112).

6. A fan structure that is easy to disassemble according to claim 2, 4 or 5, characterized in that: The locking member (130) is arranged to move up and down relative to the housing (110).

7. A fan structure that is easy to disassemble according to any one of claims 1 to 5, characterized in that: The housing (110) is hollow inside and has an open front end. A cover (120) is installed at the front end of the housing (110), and the positioning socket (111) is arranged on the cover (120).

8. A fan structure that is easily disassembled according to any one of claims 1 to 5, characterized in that: The housing (110) is equipped with a motor (40), a motor shaft of the motor (40) passes through the housing (110) and extends forward, and a driving head (50) is installed on the motor shaft of the motor (40); A front cover (220) is installed on the front side of the rear cover (210), a fan blade (230) is provided between the rear cover (210) and the front cover (220), the fan blade (230) is fixedly connected to a transmission shaft (240), the rear end of the transmission shaft (240) passes through the rear cover (210) and extends backwards, and the rear end of the transmission shaft (240) is installed with a driven head (250) coupled to the driving head (50) for transmission.

9. The easily disassembled fan structure according to claim 8, characterized in that: The rear cover (210) is provided with an annular mounting portion (214), a transmission bearing (216) is provided inside the annular mounting portion (214), an outer ring of the transmission bearing (216) is fixedly connected to the annular mounting portion (214), and the transmission shaft (240) is inserted into the inner ring of the transmission bearing (216).

10. A fan structure that is easily disassembled according to any one of claims 1 to 5, characterized in that: A micro switch (60) for matching induction with the mesh cover assembly (20) is installed in the housing (110).

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