Fan

Abstract

A fan comprises a shell, the shell comprises a rear cover, and the front end of the rear cover is provided with a containing cavity for installing fan blades; the front cover is clamped to the front end of the containing cavity, a clamping groove is formed in the outer side wall of the front cover, and a clamping block matched with the clamping groove in a clamped mode is arranged on the inner wall of the containing cavity; the motor bin is inserted into the rear end of the rear cover, the front end of the motor bin is open, an inverted buckle is arranged at the front end of the motor bin, and a buckle hole matched with the inverted buckle in an inserted mode is formed in the rear end face of the rear cover; the outer frame is annularly arranged on the periphery of the rear cover, convex shafts are arranged on the outer walls of the two sides of the rear cover, and shaft holes matched with the convex shafts in an inserted mode are formed in the outer frame. After the structure is adopted, compared with the prior art, the shell has the beneficial effects that the shell is assembled without fastening pieces such as screws and the like, so that the assembly difficulty can be effectively reduced, the operation is simplified, and the assembly efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to fans. Background Technology

[0002] A fan is a household appliance that uses an electric motor to drive the fan blades to rotate, thereby accelerating air circulation. It is mainly used for cooling and air circulation. Nowadays, there are small desktop fans on the market designed for use on a table. They consist of a motor, fan blades, and a plastic housing. The plastic housing is composed of multiple components, and the connection between these components requires fasteners such as screws, making the product assembly relatively complicated. Utility Model Content

[0003] This utility model addresses the above problems by providing a fan with a plastic housing and screwless assembly.

[0004] The technical solution used by this utility model to solve the above problems is as follows: a fan, including a housing, the housing comprising: a rear cover, the front end of which has a receiving cavity for mounting fan blades; a front cover, snapped onto the front end of the receiving cavity, the outer side wall of the front cover having a slot, and the inner wall of the receiving cavity having a locking block that engages with the slot; a motor compartment, inserted into the rear end of the rear cover, the front end of which is open, the front end of which has a buckle, and the rear end face of the rear cover having a buckle hole that engages with the buckle; and an outer frame, the outer frame being annularly arranged on the outer periphery of the rear cover, the outer walls on both sides of the rear cover having protruding shafts, and the outer frame having shaft holes that engage with the protruding shafts.

[0005] The fan housing of this utility model consists of a rear cover, a front cover, a motor compartment, and an outer frame. The motor compartment is inserted into the rear cover using a snap-fit ​​and snap-hole connection. The front cover is snapped into the rear cover using a snap-fit ​​and slot connection. The outer frame is inserted into the rear cover using a convex shaft and shaft hole connection. Compared with the prior art, the advantage of this structure is that the assembly of the housing does not require screws or other fasteners, which can effectively reduce assembly difficulty, simplify operation, and improve assembly efficiency.

[0006] Preferably, the rear end face of the rear cover is provided with an anti-misalignment hole, the size of which is smaller than the size of the snap-fit ​​hole, and the front end of the motor compartment is provided with an anti-misalignment post, which is inserted into the anti-misalignment hole. This arrangement can prevent incorrect assembly of the upper and lower ends of the motor compartment.

[0007] Preferably, the outer wall of the motor compartment is provided with anti-slip grooves, and the groove walls are stepped. The anti-slip grooves facilitate clamping the motor compartment during assembly and also make it easier for users to grip the product during later use.

[0008] Preferably, the slot includes a first slot and a second slot, the first slot extends to the rear end and opens, the bottom of the second slot is provided with a limiting protrusion, and the card block is provided with a limiting recess that engages with the limiting protrusion.

[0009] Preferably, the outer periphery of the convex shaft is provided with an annular protrusion, the inner wall of the shaft hole is provided with a groove to accommodate the annular protrusion, the side wall of the annular protrusion is provided with a limiting protrusion, the inner wall of the groove is provided with a semi-annular limiting groove, and the limiting protrusion is slidably connected in the limiting groove. The cooperation between the convex shaft and the shaft hole allows the rear cover to rotate relative to the outer frame, and the cooperation between the limiting protrusion and the semi-annular limiting groove can limit the rotation range of the rear cover and the outer frame. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the fan of this utility model.

[0011] Figure 2 This is an exploded view of the fan of this utility model.

[0012] Figure 3 for Figure 2 Enlarged view of part A in the middle.

[0013] Figure 4 for Figure 2 Enlarged view of section B in the middle.

[0014] Figure 5 for Figure 2 Enlarged view of section C.

[0015] Figure 6 for Figure 2 Enlarged view of section D

[0016] As shown in the figure:

[0017] 1. Rear cover; 10. Receiving cavity; 11. Locking block; 110. Limiting recess; 12. Buckle hole; 13. Protruding shaft; 131. Annular protrusion; 1311. Limiting protrusion; 14. Anti-misalignment hole.

[0018] 2. Front cover; 21. Slot; 211. First slot; 212. Second slot; 2121. Limiting protrusion;

[0019] 3. Motor compartment; 31. Inverted design; 32. Anti-misalignment column; 33. Anti-slip groove;

[0020] 4. Outer frame, 41. Shaft hole, 411. Groove, 4110. Limiting groove. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] like Figures 1 to 6As shown, a fan includes a housing, which comprises a rear cover 1, a front cover 2, a motor compartment 3, and an outer frame 4. The rear cover 1 has a cavity 10 for mounting fan blades at its front end. The front cover 2 is snapped into the front end of the cavity 10. The outer wall of the front cover 2 has a slot 21, and the inner wall of the cavity 10 has a locking block 11 that engages with the slot 21. The motor compartment 3 is inserted into the rear end of the rear cover 1. The front end of the motor compartment 3 is open, and the front end of the motor compartment 3 has a buckle 31. The rear end face of the rear cover 1 has a buckle hole 12 that engages with the buckle 31. The outer frame 4 is annularly arranged around the outer periphery of the rear cover 1. The outer walls on both sides of the rear cover 1 have protruding shafts 13, and the outer frame 4 has shaft holes 41 that engage with the protruding shafts 13.

[0023] In this example, there are five buckles 31, evenly distributed circumferentially at the front end of the motor compartment 3, and five buckle holes 12 are evenly distributed at corresponding positions on the rear end face of the rear cover 1. The rear end face of the rear cover 1 has an anti-misalignment hole 14, and the front end of the motor compartment 3 has an anti-misalignment post 32, which is inserted into the anti-misalignment hole 14. The size of the anti-misalignment hole 14 is smaller than the size of the buckle hole 12, preventing the buckles 31 from being inserted into the anti-misalignment hole 14. This design prevents incorrect assembly of the upper and lower ends of the motor compartment 3.

[0024] The outer wall of the motor compartment 3 is provided with anti-slip grooves 33, and the groove walls of the anti-slip grooves 33 are stepped. The anti-slip grooves 33 facilitate clamping the motor compartment 3 during assembly and make it easier for users to grip the product during later use.

[0025] The slot 21 includes a first slot 211 and a second slot 212. The first slot 211 extends to the rear end and is open. The bottom of the second slot 212 is provided with a limiting protrusion 2121. The locking block 11 is provided with a limiting recess 110 that engages with the limiting protrusion 2121. During assembly, the locking block 11 is aligned with the opening of the first slot 211 and inserted into the slot 21. Then, the front cover 2 is rotated, and the locking block 11 slides towards the second slot 212. The limiting protrusion 2121 engages with the limiting recess 110, completing the engagement of the front cover 2 and the rear cover 1.

[0026] The outer periphery of the convex shaft 13 is provided with an annular protrusion 131, and the inner wall of the shaft hole 41 is provided with a groove 411 for accommodating the annular protrusion 131. A limiting protrusion 1311 protrudes from the side wall of the annular protrusion 131, and a semi-annular limiting groove 4110 is provided on the inner wall of the groove 411. The limiting protrusion 1311 is slidably connected in the limiting groove 4110. The cooperation between the convex shaft 13 and the shaft hole 41 allows the rear cover to rotate relative to the outer frame, and the cooperation between the limiting protrusion 1311 and the semi-annular limiting groove 4110 restricts the rotation range of the rear cover 1 and the outer frame 4.

[0027] The fan housing of this utility model consists of a rear cover 1, a front cover 2, a motor compartment 3, and an outer frame 4. The motor compartment 3 is inserted into the rear cover 1 using a snap fastener 31 and a snap hole 12. The front cover 2 is snapped into the rear cover 1 using a locking block 11 and a locking groove 21. The outer frame 4 is inserted into the rear cover 1 using a convex shaft 13 and a shaft hole 41. The assembly of the housing does not require screws or other fasteners, which can effectively reduce assembly difficulty, simplify operation, and improve assembly efficiency.

Claims

1. A fan, characterized in that: Includes a housing, the housing comprising: The rear cover (1) has a cavity (10) for mounting fan blades at its front end; The front cover (2) is snapped into the front end of the accommodating cavity (10). The outer wall of the front cover (2) is provided with a slot (21), and the inner wall of the accommodating cavity (10) is provided with a snap-fit ​​block (11) that engages with the slot (21). The motor compartment (3) is inserted into the rear end of the rear cover (1). The front end of the motor compartment (3) is open. The front end of the motor compartment (3) is provided with a buckle (31). The rear end face of the rear cover (1) is provided with a buckle hole (12) that engages with the buckle (31). The outer frame (4) is arranged in a ring around the outer periphery of the rear cover (1). The outer walls on both sides of the rear cover (1) are provided with protruding shafts (13), and the outer frame (4) is provided with shaft holes (41) that are inserted and engaged with the protruding shafts (13).

2. The fan according to claim 1, characterized in that: The rear cover (1) has an anti-misalignment hole (14) on its rear end face. The size of the anti-misalignment hole (14) is smaller than the size of the buckle hole (12). The front end of the motor compartment (3) has an anti-misalignment post (32) which is inserted into the anti-misalignment hole (14).

3. The fan according to claim 2, characterized in that: The outer wall of the motor compartment (3) is provided with anti-slip grooves (33), and the groove walls of the anti-slip grooves (33) are stepped.

4. The fan according to claim 1, characterized in that: The slot (21) includes a first slot (211) and a second slot (212). The first slot (211) extends to the rear end and opens. The bottom of the second slot (212) is provided with a limiting protrusion (2121). The card block (11) is provided with a limiting recess (110) that engages with the limiting protrusion (2121).

5. The fan according to claim 1, characterized in that: The outer periphery of the convex shaft (13) is provided with an annular protrusion (131), the inner wall of the shaft hole (41) is provided with a groove (411) for accommodating the annular protrusion (131), the side wall of the annular protrusion (131) is provided with a limiting protrusion (1311), the inner wall of the groove (411) is provided with a semi-annular limiting groove (4110), and the limiting protrusion (1311) is slidably connected in the limiting groove (4110).

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