Desk fan

Abstract

The utility model discloses a desk fan which comprises an installation base and a fan assembly, the outer side of the fan assembly is movably connected with a fan support, the lower end of the fan support is movably connected with the middle of the installation base, the fan assembly comprises a fan rear cover, and support connecting grooves are symmetrically formed in the two sides of the fan rear cover. The fan support is provided with a support connecting groove, fan connectors are symmetrically arranged on the two inner sides of the fan support and movably connected into the support connecting groove in a positioning mode, the installation base comprises a base shell, a support installation groove is formed in the upper middle portion of the base shell, a support connector is arranged at the lower end of the fan support and connected into the support installation groove, and the support installation groove is provided with a support. The lower end of the support connector is connected with a positioning connecting piece, positioning connecting blocks are symmetrically arranged on the two sides of the outer edge of the positioning connecting piece in a protruding mode, and the two positioning connecting blocks are connected to the bottom end of the support installation groove respectively.

Description

Technical Field

[0001] This utility model belongs to the field of fan technology, specifically relating to a desktop fan. Background Technology

[0002] Fans, as a common household appliance, are widely used in homes, offices, and industries to provide air circulation and cooling. Most existing table fans employ a traditional design, primarily consisting of a mounting base, fan assembly, and stand. The fan assembly typically operates at a specific angle due to the stand's fixation; however, this design has some shortcomings in practical use.

[0003] Current desktop fan stands and bases generally have relatively simple connection methods, and the angle adjustment of the fan components is quite limited. It is difficult for users to precisely adjust the fan angle to meet different usage needs, and the fan angle may change due to vibration or external interference during adjustment, affecting the performance. This structure may be somewhat unstable and inconvenient when users need to precisely adjust the fan direction.

[0004] In the existing technology, the connection between the fan assembly and the base often relies on traditional rotation and fixing designs, lacking an effective positioning device. This often leads to problems such as over-rotation or inaccurate angle adjustment when adjusting the angle, and cannot effectively avoid over-adjustment of the fan bracket, which further affects the stability of the fan.

[0005] The current desktop fan products have a relatively complex overall design and a complicated assembly process, which increases production costs and also increases the difficulty for users to assemble them after purchase.

[0006] Therefore, overcoming the shortcomings of the existing technology is an urgent problem to be solved in this technical field. Utility Model Content

[0007] In view of the technical problems mentioned in the background art, the purpose of this utility model is to provide a desktop fan to solve the technical problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a desktop fan, comprising a mounting base and a fan assembly, wherein a fan bracket is movably connected to the outer side of the fan assembly, and the lower end of the fan bracket is movably connected to the middle part of the mounting base; the fan assembly includes a fan rear cover, on both sides of which bracket connecting grooves are symmetrically provided; and on both sides of the inner side of the fan bracket are symmetrically provided fan connectors, which are movably positioned and connected in the bracket connecting grooves; the mounting base includes a base shell, the upper middle part of which has a bracket mounting groove; and the lower end of the fan bracket has a bracket connector connected to the bracket mounting groove; the lower end of the bracket connector is connected to a positioning connector, and on both sides of the outer edge of the positioning connector are symmetrically provided positioning connecting blocks, which are respectively connected to the bottom end of the bracket mounting groove.

[0009] Furthermore, the inner wall of the bracket connecting groove is uniformly provided with a plurality of first positioning protrusions, and the outer wall of the fan connector is uniformly provided with a plurality of second positioning protrusions, and the plurality of first positioning protrusions and the plurality of second positioning protrusions are positioned and connected in a one-to-one correspondence.

[0010] Furthermore, the bottom outer edge of the bracket mounting groove is symmetrically provided with limiting protrusions on both sides.

[0011] Furthermore, the bracket connecting groove has a connecting post in the middle, and the fan connector has a connecting hole in the middle. The connecting post is connected in the connecting hole and is connected to the connecting post by fasteners.

[0012] Furthermore, the bracket connector has symmetrically arranged fixing through posts on both inner sides, and the positioning connector has symmetrically arranged fixing through holes on both sides of its surface. The fixing through holes correspond to the fixing through posts, and are connected and fixed by fasteners passing through the fixing through holes and fixing through posts.

[0013] Furthermore, the fan assembly also includes a front fan cover connected to the front end of the rear fan cover, the front fan cover and the rear fan cover being fixed together by fasteners, and fan blades being provided between the front fan cover and the rear fan cover.

[0014] Furthermore, the mounting base also includes a base plate, which is embedded in the bottom of the base housing and is connected and fixed to the base housing by fasteners passing through the base plate.

[0015] Furthermore, the inner side of the base housing is provided with an audio mounting position and a circuit board mounting position, and a control circuit board is fixed in the circuit board mounting position by fasteners.

[0016] The present invention has the following advantages: the fan assembly is movably connected to a fan bracket on its outer side, and the lower end of the fan bracket is movably connected to the middle part of the mounting base, so that the fan assembly can be movably connected to the mounting base. The desktop fan of the present invention has a simple structure and is easy to assemble. Through positioning adjustment, the fan assembly can be kept at the angle position set by the user, and it is not easy to change the angle due to vibration or external force interference, so that the adjustment is more stable. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the overall exploded structure of this utility model.

[0019] Figure 3 This is an exploded view of the fan bracket and fan rear cover of this utility model.

[0020] Figure 4 This is an exploded view of the fan bracket of this utility model.

[0021] Figure 5 This is a schematic diagram of the base shell structure of this utility model.

[0022] Reference numerals: Mounting base 10; Fan assembly 20; Fan bracket 30; Fan front cover 21; Fan rear cover 22; Fan blade 23; Bracket connecting slot 24; Fan connector 31; Connecting through post 241; Connecting through hole 311; First positioning protrusion 242; Second positioning protrusion 312; Base shell 11; Base base plate 12; Bracket mounting slot 111; Bracket connector 32; Positioning connector 33; Fixing through post 321; Fixing through hole 331; Positioning connecting block 332; Limiting protrusion 112; Speaker mounting position 113; Circuit board mounting position 114; Control circuit board 13. Detailed Implementation

[0023] like Figures 1 to 5 As shown, a desktop fan includes a mounting base 10 and a fan assembly 20. A fan bracket 30 is movably connected to the outer side of the fan assembly 20. The lower end of the fan bracket 30 is movably connected to the middle part of the mounting base 10, so that the fan assembly 20 is movably connected to the mounting base 10. In use, the fan bracket 30 can rotate around the circumference of the middle part of the mounting base 10 to adjust the direction of use of the fan assembly 20. The fan assembly 20 can rotate around the circumference of the fan bracket 30 to adjust the angle of use, which is convenient for users to adjust and use.

[0024] In specific implementation, the fan assembly 20 includes a front fan cover 21 and a rear fan cover 22. The front fan cover 21 is connected to the front end of the rear fan cover 22, and the front fan cover 21 and the rear fan cover 22 are fixed together by fasteners. A fan blade 23 is provided between the front fan cover 21 and the rear fan cover 22. In use, a motor housing is connected to the rear end of the rear fan cover 22 by fasteners. A fan motor is connected in the motor housing and connected to the fan blade 23. When the fan motor is powered on, it drives the fan blade 23 to rotate and generate airflow. The airflow is drawn in through the rear fan cover 22 and discharged through the front fan cover 21.

[0025] In practical implementation, the fan rear cover 22 is symmetrically provided with bracket connecting grooves 24 on both sides, and the fan bracket 30 is symmetrically provided with fan connectors 31 on both inner sides. The fan connectors 31 are connected in the bracket connecting grooves 24. The bracket connecting grooves 24 are provided with connecting through posts 241 in the middle, and the fan connectors 31 are provided with connecting through holes 311 in the middle. The connecting through posts 241 are connected in the connecting through holes 311 and are connected to the connecting through posts 241 by fasteners, so that the fan rear cover 22 and the fan bracket 30 can be movably connected. The structure is simple and easy to assemble.

[0026] In practical implementation, the inner sidewall of the bracket connecting groove 24 is uniformly provided with a plurality of first positioning protrusions 242, and the outer sidewall of the fan connector 31 is uniformly provided with a plurality of second positioning protrusions 312. The plurality of first positioning protrusions 242 and the plurality of second positioning protrusions 312 are positioned and connected one-to-one. When adjusting the use angle of the fan assembly 20, the fan connector 31 will move circumferentially with the bracket connecting groove 24. Through the cooperation of the first positioning protrusions 242 and the second positioning protrusions 312, the user can manually adjust the use angle of the fan. Each angle within the adjustment range will be "locked" and provide precise angle selection, avoiding unstable adjustment. In this way, the fan assembly 20 can maintain the angle position set by the user and is not easily changed due to vibration or external force interference, making the adjustment and use more stable.

[0027] In practical implementation, the mounting base 10 includes a base shell 11 and a base plate 12. The base plate 12 is embedded in the bottom of the base shell 11 and is connected and fixed to the base shell 11 by fasteners passing through the base plate 12, making installation simple and convenient.

[0028] In practical implementation, a bracket mounting groove 111 is provided in the upper middle part of the base housing 11, and a bracket connector 32 is provided at the lower end of the fan bracket 30. The bracket connector 32 is connected to the bracket mounting groove 111, and a positioning connector 33 is connected to the lower end of the bracket connector 32. Fixed through posts 321 are symmetrically provided on both inner sides of the bracket connector 32, and fixed through holes 331 are symmetrically provided on both sides of the surface of the positioning connector 33. The fixed through holes 331 correspond to the fixed through posts 321, and fasteners pass through the fixed through holes 331. 31 is connected and fixed to the fixed through post 321, thereby fixing the positioning connector 33 to the lower end of the bracket connector 32. The positioning connector 33 has symmetrically protruding positioning connecting blocks 332 on both sides of its outer edge. The two positioning connecting blocks 332 are respectively connected to the bottom end of the bracket mounting groove 111, thereby allowing the fan bracket 30 to be movably connected to the mounting base 10. In use, the fan bracket 30 can rotate around the circumference of the bracket mounting groove 111, thereby adjusting the usage direction of the fan assembly 20. The structure is simple and the adjustment is convenient.

[0029] In practical implementation, the bottom outer edge of the bracket mounting groove 111 is symmetrically provided with limiting protrusions 112. When adjusting the fan bracket 30, the fan bracket 30 will move along the bracket mounting groove 111. The positioning connecting block 332 will slide at the bottom of the bracket mounting groove 111 and contact the limiting protrusion 112. When the positioning connecting block 332 abuts against the limiting protrusion 112, the adjustment process will stop, thereby ensuring that the adjustment angle of the fan bracket 30 is precisely limited within a certain range, avoiding excessive rotation, and making the adjustment more stable.

[0030] In practice, the inner side of the base housing 11 is provided with a speaker mounting position 113 and a circuit board mounting position 114. The control circuit board 13 is fixed in the circuit board mounting position 114 by fasteners, and the speaker component is fixed in the speaker mounting position 113 by fasteners. In use, the control circuit board 13 and the speaker component are connected by wires, and the speaker component is powered on to produce sound.

[0031] In summary, the fan assembly 20 is movably connected to a fan bracket 30 on its outer side. The lower end of the fan bracket 30 is movably connected to the middle of the mounting base 10, thereby allowing the fan assembly 20 to be movably connected to the mounting base 10. The desktop fan of this invention has a simple structure and is easy to assemble. Through positioning adjustment, the fan assembly can be kept at the angle position set by the user, and it is not easy to change the angle due to vibration or external force interference, making the adjustment more stable.

Claims

1. A desktop fan, characterized in that, It includes a mounting base (10) and a fan assembly (20). A fan bracket (30) is movably connected to the outer side of the fan assembly (20). The lower end of the fan bracket (30) is movably connected to the middle of the mounting base (10). The fan assembly (20) includes a fan rear cover (22). The fan rear cover (22) has symmetrical bracket connecting grooves (24) on both sides. The fan bracket (30) has symmetrical fan connectors (31) on both sides inside. The fan connectors (31) are movably connected in the bracket connecting grooves (24). The mounting base (10) includes a base shell (11), and a bracket mounting groove (111) is provided in the upper middle part of the base shell (11). The lower end of the fan bracket (30) is provided with a bracket connector (32), which is connected in the bracket mounting groove (111). The lower end of the bracket connector (32) is connected with a positioning connector (33). The outer edges of the positioning connector (33) are symmetrically provided with positioning connecting blocks (332), and the two positioning connecting blocks (332) are respectively connected to the bottom end of the bracket mounting groove (111).

2. The desktop fan according to claim 1, characterized in that, The inner wall of the bracket connecting groove (24) is uniformly provided with a number of first positioning protrusions (242), and the outer wall of the fan connector (31) is uniformly provided with a number of second positioning protrusions (312). The number of first positioning protrusions (242) and the number of second positioning protrusions (312) are connected in a one-to-one correspondence.

3. The desktop fan according to claim 1, characterized in that, The bottom outer edge of the bracket mounting groove (111) is symmetrically provided with limiting protrusions (112).

4. The desktop fan according to claim 1, characterized in that, The bracket connecting groove (24) has a connecting post (241) in the middle, and the fan connector (31) has a connecting hole (311) in the middle. The connecting post (241) is connected in the connecting hole (311) and is connected to the connecting post (241) by fasteners.

5. The desktop fan according to claim 1, characterized in that, The bracket connector (32) has symmetrically arranged fixed through posts (321) on both sides of its inner surface, and the positioning connector (33) has symmetrically arranged fixed through holes (331) on both sides of its surface. The fixed through holes (331) correspond to the fixed through posts (321), and are connected and fixed to the fixed through posts (321) by fasteners passing through the fixed through holes (331).

6. The desktop fan according to claim 1, characterized in that, The fan assembly (20) also includes a fan front cover (21), which is connected to the front end of the fan rear cover (22). The fan front cover (21) and the fan rear cover (22) are fixed together by fasteners. Fan blades (23) are provided between the fan front cover (21) and the fan rear cover (22).

7. The desktop fan according to claim 1, characterized in that, The mounting base (10) also includes a base plate (12), which is embedded in the bottom of the base housing (11) and is connected and fixed to the base housing (11) by fasteners passing through the base plate (12).

8. The desktop fan according to claim 1, characterized in that, The inner side of the base housing (11) is provided with an audio mounting position (113) and a circuit board mounting position (114), and the control circuit board (13) is fixed in the circuit board mounting position (114) by fasteners.

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