A wall-mounted cylinder fan structure

Abstract

The utility model discloses a wall -hanging cylinder fan structure relates to ventilation equipment field, including cylinder fan body, connecting support and rotation adjustment module. Rotation adjustment module contains mounting seat and adjustment seat, and adjustment seat is connected in connecting support, and mounting seat center is equipped with pivot piece, and adjustment seat is relative mounting seat rotation with pivot piece as the axle. The constraint component is connected between mounting seat and adjustment seat, and is used for locking the relative position of both. The structure realizes the rotation cooperation of adjustment seat and mounting seat through pivot piece, drives cylinder fan body flexible adjustment blowing angle, breaks through the limitation of traditional fixed structure, and the constraint component can be firmly locked after angle determination, and guarantees stable operation. Its simple structure, convenient adjustment can adapt to the ventilation demand of multiple scenes, improves the use experience and equipment applicability.

Description

Technical Field

[0001] This utility model relates to the field of cylindrical fan technology, and in particular to a wall-mounted cylindrical fan structure. Background Technology

[0002] With the increasing demand for indoor ventilation and heat dissipation, downspout fans have become widely used in various settings, including homes, offices, shops, and small industrial workshops, thanks to their advantages such as large air volume, compact size, and easy installation. Wall-mounted downspout fans, in particular, save floor space by being fixed to the wall with mounting brackets, further meeting the space-saving needs of modern interior design and becoming a preferred ventilation device for many consumers and users.

[0003] The core installation structure of existing wall-mounted downspout fans typically consists of three parts: a mounting base, a connecting bracket, and the fan body. The assembly logic is as follows: first, the mounting base is stably fixed to a predetermined position on the wall using expansion bolts and other fastening components. Then, the connecting bracket is rigidly connected to the mounting base. Finally, the connecting bracket supports and fixes the fan body, thus achieving wall-mounted installation and use of the downspout fan. This structure possesses a certain degree of reliability in terms of foundation fixation and load-bearing capacity, meeting the installation stability requirements during normal fan operation.

[0004] However, in long-term practical application, the limitations of the existing structure have gradually become apparent. Specifically, in existing wall-mounted down fans, the connection between the connecting bracket and the mounting base is a fixed design. That is, once the connecting bracket is assembled with the mounting base, its spatial angle relative to the mounting base is completely locked, and it cannot be flexibly adjusted according to actual ventilation needs. Since the connecting bracket directly determines the installation angle and orientation of the down fan body, this non-adjustable structural design results in the airflow direction of the down fan body being strictly constrained within a fixed range.

[0005] In real-world applications, variations in space layout, personalized ventilation needs (such as directional airflow for specific workstations or rest areas), and seasonal changes in ventilation requirements all necessitate that downdraft fans can flexibly adjust their airflow range. However, existing designs limit downdraft fans to a fixed direction, failing to cover a wider area and adapt to dynamic ventilation needs in different scenarios, thus significantly restricting their ventilation efficiency and user experience. For example, in a rectangular office, a wall-mounted downdraft fan at a fixed angle cannot simultaneously meet the ventilation needs of different workstations; similarly, in a family living room, it cannot flexibly adjust the airflow direction based on the user's activity location (such as the sofa rest area or dining area).

[0006] Therefore, the limited airflow range of existing wall-mounted down fans due to the non-adjustable angle between the connecting bracket and the mounting base has become a key bottleneck restricting their functional optimization and user experience improvement. There is an urgent need to propose a technical solution that can overcome this structural limitation, so as to achieve flexible adjustment of the airflow range of wall-mounted down fans and further expand their application value. Utility Model Content

[0007] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an angle-adjustable wall-mounted cylindrical fan structure.

[0008] A wall-mounted down fan structure designed for this purpose includes interconnected down fan bodies and connecting brackets, and also includes a rotation adjustment module; The rotation adjustment module includes a mounting base and an adjustment base, and the adjustment base is connected to the connecting bracket. A rotating shaft is provided at the center of the mounting base, and the adjusting base is rotatably arranged relative to the mounting base with the rotating shaft as the axis. The mounting base and the adjusting base are connected by a constraint component for restricting their relative rotation.

[0009] Preferably, the mounting seats on the left and right sides of the rotating shaft are provided with mounting holes; the adjusting seats on the left and right sides of the rotating shaft are provided with arc-shaped track grooves, the axis of the arc-shaped track grooves is coaxial with the rotating shaft and passes through the adjusting seats vertically; The constraint assembly is provided in two sets, each including a locking bolt and a locking nut; The stud of the locking bolt passes through the mounting hole and the arc-shaped track groove, and its bolt head is fitted with the mounting seat; the locking nut is threadedly connected to the stud of the locking bolt and is fitted with the adjusting seat.

[0010] Preferably, the mounting base has a shaft hole at its center; the rotating shaft includes a shaft body disposed in the shaft hole and a constraint element. The adjusting seat is provided with a mating shaft hole corresponding to the position of the shaft hole, and an assembly hole communicating with each other is provided on one side of the mating shaft hole; The shaft can be inserted into the mating shaft hole or assembly hole; The diameter of the constraint element is greater than the diameter of the mating shaft hole but less than the diameter of the assembly hole.

[0011] Preferably, connecting plates are provided on the left and right sides of the connecting bracket, and the cylinder fan body is disposed between the two connecting plates and rotates relative to the connecting plates.

[0012] Preferably, the rotation axis of the fan body relative to the connecting bracket and the rotation axis of the adjusting seat relative to the mounting seat are perpendicular to each other.

[0013] Preferably, connecting blocks are provided on the left and right sides of the cylindrical fan body, and the connecting plate is provided with a damping bolt threadedly connected to the connecting block. The connecting plate is clamped and fixed between the connecting block and the bolt head of the damping bolt.

[0014] Preferably, the cylindrical fan body includes a cylindrical body extending in a front-to-back direction; a front cover is provided on the front side of the cylindrical body and a rear cover is provided on its rear side; fan blades are provided inside the cylindrical body between the front cover and the rear cover, and a driver that is drivenly connected to the fan blades is fixedly provided on the rear cover.

[0015] Preferably, the rear cover is provided with a controller for electrical connection with the driver.

[0016] Preferably, the outer wall of the cylinder is provided with a handle.

[0017] Preferably, the handle is located on the upper outer wall of the cylinder.

[0018] Compared with existing technologies, this invention features a rotating shaft at the center of the mounting base, allowing the adjusting seat, which is fixed to the connecting bracket, to rotate freely relative to the mounting base around the shaft, thereby enabling the fan body to deflect at multiple angles. This design overcomes the limitations of traditional rigid fixing of the connecting bracket and mounting base, allowing users to adjust the fan body to any target angle according to actual needs. This enables airflow to precisely cover specific areas or diffuse widely to a larger space, solving the problem of blind spots in ventilation from fixed-angle fans.

[0019] Meanwhile, the constraint component connecting the mounting base and the adjustment base can quickly lock their relative positions after the downspout fan angle is adjusted to the target position, preventing the downspout fan from shifting its angle due to airflow reaction force or its own weight during operation. This design achieves an organic unity of "easy adjustment" and "installation stability," retaining the core advantage of adjustable angle while maintaining the reliability of wall-mounted downspout fans in terms of fixation and load-bearing capacity, ensuring stable operation of the equipment at any adjusted angle. Attached Figure Description

[0020] Figure 1 This is one of the three-dimensional structural schematic diagrams of this utility model; Figure 2 This is the second three-dimensional structural schematic diagram of the present invention; Figure 3 This is one of the cross-sectional structural schematic diagrams of this utility model; Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is the second cross-sectional structural schematic diagram of the present invention; Figure 6 This is a three-dimensional structural diagram of the rotation adjustment module; Figure 7 This is an exploded view of the rotation adjustment module. Detailed Implementation

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

[0022] See Figures 1-7 A wall-mounted downspout fan structure includes a fan body 10 and a connecting bracket 20 connected to each other, and a rotation adjustment module 30. The rotation adjustment module 30 includes a mounting base 310 and an adjustment base 320, the adjustment base 320 being connected to the connecting bracket 20. A rotating shaft 330 is provided at the center of the mounting base 310, and the adjustment base 320 is rotatably disposed relative to the mounting base 310 with the rotating shaft 330 as the axis. A constraint component 40 for constraining the relative rotation of the mounting base 310 and the adjustment base 320 is connected. Mounting holes 312 are provided on the mounting seats 310 on the left and right sides of the rotating shaft 330; arc-shaped track grooves 323 are provided on the adjusting seats 320 on the left and right sides of the rotating shaft 330, the axis of the arc-shaped track grooves 323 is coaxial with the rotating shaft 330 and passes through the adjusting seats 320 vertically; the constraint assembly 40 is provided with two sets, each including a locking bolt 410 and a locking nut 420; the stud of the locking bolt 410 passes through the mounting hole 312 and the arc-shaped track groove 323 and its bolt head is fitted with the mounting seat 310; the locking nut 420 is threadedly connected to the stud of the locking bolt 410 and is fitted with the adjusting seat 320.

[0023] The core functionality of this wall-mounted downdraft fan revolves around the logic of "downdraft fan pre-installation - wall mounting - angle adjustment - locking and fixing." Through the coordinated action of the rotating adjustment module and the constraint components, flexible control and stable maintenance of the airflow angle are achieved. The specific principle is as follows: 1. Pre-assembly and Wall Fixing of the Down Fan: First, complete the pre-assembly of the entire down fan, fixing the adjusting seat and connecting bracket together so that the down fan body forms a linked whole with the adjusting seat through the connecting bracket. At the same time, ensure that the mounting seat, adjusting seat, and constraint components of the rotating adjusting module (locking bolts are inserted through the mounting holes and arc-shaped track grooves, and then fitted with locking nuts) are initially assembled in place (at this time, the locking nuts are not fully tightened, leaving adjustment margin). Then, using the mounting seat as the positioning reference, use expansion bolts and other fastening components to pass through the preset mounting holes on the mounting seat to firmly fix the assembled down fan body to the preset position on the wall, laying a stable foundation for subsequent use.

[0024] 2. Angle Adjustment Operation Stage: After the downspout fan is fixed, the angle can be adjusted according to the required airflow direction. Since the constraint components are unlocked during pre-installation, the adjustment seat already has the freedom to rotate around the rotating shaft. The arc-shaped groove on the adjustment seat is coaxial with the rotating shaft, and the stud of the locking bolt passes through both the mounting hole of the mounting base and the arc-shaped groove of the adjustment seat. The arc-shaped groove provides precise guidance for the rotation of the adjustment seat. Users can directly push the downspout fan body or the adjustment seat, causing the adjustment seat to rotate around the rotating shaft along the extension direction of the arc-shaped groove, simultaneously causing the downspout fan body to deflect until it is adjusted to the target airflow angle. During this process, the length of the arc-shaped groove determines the maximum rotation angle range of the adjustment seat, adapting to the ventilation needs of different scenarios.

[0025] 3. Angle Locking and Fixing Stage: After the duct fan body is adjusted to the required angle, the relative position of the adjusting seat and the mounting seat is locked by the constraint components. During operation, tighten the locking nut along the thread direction of the locking bolt, so that the locking nut fits tightly against the surface of the adjusting seat. At the same time, the bolt head of the locking bolt forms a reverse clamping force with the surface of the mounting seat. With the bidirectional clamping action of the locking nut and the mounting seat on the adjusting seat, the adjusting seat is firmly fixed in the current position, preventing angle deviation due to airflow impact or its own gravity during duct fan operation. Two sets of symmetrically distributed constraint components ensure uniform pressure transmission, further improving the structural stability after locking and ensuring stable operation of the duct fan body at the target angle.

[0026] 4. Secondary Adjustment and Adaptation Stage: If the air outlet angle needs to be changed later, there is no need to disassemble the entire fan. Simply repeat the "unlock-adjust-lock" operation process. That is, first loosen the locking nuts of the two sets of constraint components to release the rotation constraint on the adjustment seat, push the fan body to the new target angle according to the angle adjustment method described above, and finally tighten the locking nuts to complete the fixation, thus achieving convenient secondary adjustment of the angle.

[0027] In this invention, the mounting base 310 has a shaft hole 311 at its center; the rotating shaft 330 includes a shaft body 331 disposed within the shaft hole 311 and a constraint element 332; the shaft body 331 can be mounted on the fixed base 310 by welding or by rotating assembly using bearings, etc.; the adjusting base 320 has a mating shaft hole 321 corresponding to the shaft hole 311, and an assembly hole 322 communicating with each other is provided on one side of the mating shaft hole 321; the shaft body 331 can pass through the mating shaft hole 321 or the assembly hole 322; the diameter of the constraint element 332 is larger than the diameter of the mating shaft hole 321 and smaller than the diameter of the assembly hole 322. The rotating shaft, through the cooperation of the shaft body and the constraint element (circular plate), enables rapid pre-assembly and upper / lower positioning of the mounting base and the adjusting base. During assembly, the shaft can carry a constraint element with a diameter larger than the mating shaft hole but smaller than the assembly hole. This constraint element passes through the assembly hole into the adjusting seat and moves above it. Then, the adjusting seat or mounting seat is moved laterally so that the shaft slides into the mating shaft hole. At this point, the constraint element cannot pass through the mating shaft hole due to its diameter limitation. It forms a bidirectional clamping effect on the adjusting seat with the mounting seat, effectively constraining the vertical displacement of both and completing the pre-assembly positioning. This lays a stable foundation for subsequent angle adjustment and locking of the constraint components.

[0028] In this invention, connecting plates 210 are provided on the left and right sides of the connecting bracket 20, and the fan body 10 is disposed between the two connecting plates 210 and rotates relative to the connecting plates 210. The rotation axis of the fan body 10 relative to the connecting bracket 20 is perpendicular to the rotation axis of the adjusting seat 320 relative to the mounting seat 310. Connecting blocks 180 are provided on the left and right sides of the fan body 10, and damping bolts 50 are threadedly connected to the connecting blocks 180 through the connecting plates 210. The connecting plates 210 are clamped and fixed between the connecting blocks 180 and the bolt heads of the damping bolts 50. The connecting plates on both sides of the connecting bracket provide stable support for the fan body, and the fan body is rotatably connected to the connecting blocks and connecting plates through the damping bolts. Furthermore, its rotation axis relative to the connecting bracket is perpendicular to the rotation axis of the adjusting seat, forming a three-dimensional adjustment structure that significantly expands the coverage dimension of the air outlet angle. Damping bolts provide stable damping force by clamping the connecting plate between the connecting block and the bolt head, enabling the duct fan body to be accurately positioned at any rotation angle, preventing displacement due to vibration or airflow during operation, and balancing adjustment flexibility and usage stability.

[0029] In this invention, the cylindrical fan body 10 includes a cylindrical body 110 extending in a front-to-back direction; a front cover 120 is provided on the front side of the cylindrical body 110, and a rear cover 130 is provided on its rear side; a fan blade 150 is disposed inside the cylindrical body 110 between the front cover 120 and the rear cover 130, and a driver 140 is fixedly disposed on the rear cover 130 and is drivenly connected to the fan blade 150. A controller 160 is provided on the rear cover 130 for electrical connection with the driver 140. In the cylindrical fan body, the front-to-back extending cylindrical body provides a mounting carrier for components such as the fan blade and the driver; the front cover and the rear cover form a protective structure, ensuring the safe operation of the fan blade and guiding stable airflow. The driver (using an existing motor) fixed on the rear cover serves as a power source, drivingly connected to the fan blade to drive its rotation and generate wind power; the controller (using an existing motor controller) on the rear cover is electrically connected to the driver, realizing precise control of the motor's start / stop, speed, and other operating states. By using existing mature motors and motor controllers, stable power output and reliable control are ensured, while reducing structural research and development and manufacturing costs and improving product cost-effectiveness.

[0030] In this invention, a handle 170 is provided on the outer wall of the cylindrical body 110. The handle 170 is located on the upper outer wall of the cylindrical body 110.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wall-mounted downspout fan structure, comprising a downspout fan body (10) and a connecting bracket (20) connected to each other, characterized in that: It also includes a rotation adjustment module (30); The rotation adjustment module (30) includes a mounting base (310) and an adjustment base (320), the adjustment base (320) being connected to the connecting bracket (20); A rotating shaft (330) is provided at the center of the mounting base (310), and the adjusting base (320) is rotatably arranged relative to the mounting base (310) with the rotating shaft (330) as the axis. The mounting base (310) and the adjusting base (320) are connected by a constraint assembly (40) for constraining their relative rotation.

2. The wall-mounted cylindrical fan structure according to claim 1, characterized in that: Mounting holes (312) are provided on the mounting seats (310) on the left and right sides of the rotating shaft (330); arc-shaped track grooves (323) are provided on the adjusting seats (320) on the left and right sides of the rotating shaft (330), and the axis of the arc-shaped track grooves (323) is coaxial with the rotating shaft (330) and passes through the adjusting seats (320) vertically. The constraint assembly (40) is provided with two sets, each including a locking bolt (410) and a locking nut (420). The stud of the locking bolt (410) passes through the mounting hole (312) and the arc-shaped track groove (323) and its bolt head is fitted with the mounting seat (310); the locking nut (420) is threadedly connected to the stud of the locking bolt (410) and is fitted with the adjusting seat (320).

3. The wall-mounted cylindrical fan structure according to claim 1, characterized in that: The mounting base (310) has a shaft hole (311) at its center; the rotating shaft (330) includes a shaft body (331) disposed in the shaft hole (311) and a constraint element (332). The adjusting seat (320) is provided with a mating shaft hole (321) corresponding to the shaft hole (311), and an assembly hole (322) communicating with each other is provided on one side of the mating shaft hole (321). The shaft (331) can be inserted into the mating shaft hole (321) or the assembly hole (322); The diameter of the constraint element (332) is greater than the diameter of the mating shaft hole (321) and smaller than the diameter of the assembly hole (322).

4. The wall-mounted cylindrical fan structure according to claim 1, characterized in that: The connecting bracket (20) is provided with connecting plates (210) on the left and right sides. The fan body (10) is located between the two connecting plates (210) and is rotatably arranged relative to the connecting plates (210).

5. The wall-mounted cylindrical fan structure according to claim 4, characterized in that: The rotation axis of the fan body (10) relative to the connecting bracket (20) and the rotation axis of the adjusting seat (320) relative to the mounting seat (310) are perpendicular to each other.

6. The wall-mounted cylindrical fan structure according to claim 4, characterized in that: Connecting blocks (180) are provided on the left and right sides of the cylindrical fan body (10). The connecting plate (210) is provided with a damping bolt (50) threadedly connected to the connecting block (180). The connecting plate (210) is clamped and fixed between the connecting block (180) and the bolt head of the damping bolt (50).

7. The wall-mounted cylindrical fan structure according to claim 1, characterized in that: The cylindrical fan body (10) includes a cylindrical body (110) extending in a front-rear direction; a front cover (120) is provided on the front side of the cylindrical body (110) and a rear cover (130) is provided on its rear side; a fan blade (150) is provided inside the cylindrical body (110) between the front cover (120) and the rear cover (130), and a driver (140) that is drively connected to the fan blade (150) is fixedly provided on the rear cover (130).

8. The wall-mounted cylindrical fan structure according to claim 7, characterized in that: The rear cover (130) is provided with a controller (160) for electrical connection with the driver (140).

9. A wall-mounted cylindrical fan structure according to claim 7, characterized in that: The outer wall of the cylinder (110) is provided with a handle (170).

10. A wall-mounted cylindrical fan structure according to claim 9, characterized in that: The handle (170) is located on the upper outer wall of the cylinder (110).

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