Stably-connected fan structure

Abstract

The utility model belongs to the technical field of fans, and particularly relates to a stably-connected fan structure which comprises a supporting frame, a driving motor and a fan, the driving motor is installed on the supporting frame, the driving end of the driving motor is connected with the fan to drive the fan to rotate, and the supporting frame comprises an upper frame and a lower frame which are covered up and down. A containing cavity is formed between the upper frame and the lower frame, buckles are arranged on two symmetrical first outer side walls of the upper frame, buckling parts are arranged at the corresponding positions of the lower frame, and the buckles are connected with the buckling parts in a clamped mode; a detachable connecting unit is further arranged on the periphery of the supporting frame and comprises a locking part, a sleeve part and a connecting shaft, the hollow sleeve part is fixed to the corner end of the containing cavity, the lower end of the connecting shaft penetrates through the upper frame and extends into the sleeve part, and the locking part is detachably connected to the upper end of the connecting shaft, so that the connecting shaft is connected with the sleeve part in a locked mode. Connecting units are arranged at the corner ends of the supporting frame, the connecting shaft penetrates through the upper frame from the upper portion and extends into the sleeve part, and finally the connecting shaft is detachably connected with the upper end of the connecting shaft through the locking part, so that locking of the connecting shaft and the sleeve part is achieved. The stability of the fan structure is remarkably enhanced, vibration and noise during operation are reduced, and the service life is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of fan technology, and in particular relates to a fan structure with a stable connection. Background Technology

[0002] In the field of fan technology, the stability and durability of fan structures have always been key concerns for designers and users. Traditional fan structures often employ a simple support frame, with the drive motor and fan fixed to the frame using screws or other fasteners. While this structure can meet basic heat dissipation requirements, it is prone to problems such as loosening, increased noise, and even component damage during prolonged operation or in complex operating environments. The stability of the connection is particularly challenging for fans that require frequent movement or are installed in vibrating environments.

[0003] To improve the stability and ease of maintenance of fan structures, some improved designs have emerged in the market, such as using stronger materials and adding additional fasteners. However, these solutions often increase manufacturing costs and assembly complexity, and in some cases, they still fail to completely solve the problem of loose connections. Therefore, developing a fan structure that ensures both stable connections and ease of assembly and maintenance is particularly important. Utility Model Content

[0004] The purpose of this invention is to provide a robust fan structure that addresses the aforementioned technical problems in the prior art.

[0005] To achieve the above objectives, this utility model provides a stable fan structure, including a support frame, a drive motor, and a fan. The drive motor is mounted on the support frame, and its drive end is connected to the fan to drive its rotation. The support frame includes an upper frame and a lower frame that overlap, with a receiving cavity between them. The two symmetrical first outer side walls of the upper frame are provided with buckles, and the corresponding positions of the lower frame are provided with fastening parts. The buckles engage with the fastening parts. The support frame is also provided with a detachable connecting unit around its perimeter, including a locking part, a sleeve part, and a connecting shaft. The hollow sleeve part is fixed at the corner end of the receiving cavity, and the lower end of the connecting shaft passes through the upper frame and extends into the sleeve part. The locking part is detachably connected to the upper end of the connecting shaft, so that the connecting shaft and the sleeve part are locked together.

[0006] Furthermore, a limiting member is provided at one corner of the lower frame. One end of the limiting member extends downward to form a first extension, and the first extension extends outward to form a second extension. A gap is provided between the first extension and the second extension.

[0007] Furthermore, the bottom outer periphery of the sleeve portion has a constricted neck that is narrower at the top and wider at the bottom, and the constricted neck extends out of the lower frame; the sleeve portion also has a cavity inside; the bottom end of the connecting shaft has a truncated cone-shaped variable cross-section portion, which contacts the inner circumferential surface of the constricted neck; the middle end of the connecting shaft also has an outwardly protruding concave platform portion, which is engaged in the cavity to limit the connecting shaft from falling off.

[0008] Furthermore, the upper end of the variable cross-section section is set as a first diameter, and the lower end is set as a second diameter, with the first diameter being smaller than the second diameter; the first diameter can extend into the constricted neck, while the second diameter is limited to outside the constricted neck.

[0009] Furthermore, the maximum diameter of the variable cross-section section is much larger than the minimum diameter of the necked section.

[0010] Furthermore, the neck is made of elastic plastic or metal.

[0011] Furthermore, a spring is also provided inside the cavity, with one end of the spring abutting against the inner end of the bottom wall of the cavity and the other end abutting against the recessed platform.

[0012] Furthermore, the top of the connecting shaft is provided with a threaded part, which extends out of the upper frame; the locking part is threadedly connected to the threaded part.

[0013] Furthermore, the upper frame is also provided with two symmetrical second outer side walls, and the second outer side walls are provided with interlocking parts. The lower frame is also provided with an inwardly recessed slot at the corresponding position, and the interlocking parts extend into the slots and interlock with them.

[0014] The above-mentioned technical solutions in the robustly connected fan structure provided by this utility model embodiment have at least one of the following technical effects:

[0015] In this design, the upper frame has snap-fit ​​fasteners on its two symmetrical first outer side walls, and the lower frame has corresponding fastening parts. During installation, simply align the upper and lower frames, and the snap-fit ​​fasteners will automatically engage, achieving a quick and secure connection. Additionally, connecting units are located at the corners of the support frame. A connecting shaft passes through the upper frame from above and extends into the sleeve, finally detachably connecting to the upper end of the connecting shaft via a locking part, thus locking the connecting shaft to the sleeve. This significantly enhances the stability of the fan structure, reduces vibration and noise during operation, and extends its service life. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the overall structure of the stably connected fan structure provided in this embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the connection unit for a stable fan structure provided in an embodiment of this utility model;

[0019] Figure 3 A cross-sectional view of the sleeve portion of a securely connected fan structure provided in an embodiment of this utility model;

[0020] The following are the labeling elements in the figure:

[0021] 100. Support frame; 110. Upper frame; 111. First outer side wall; 112. Second outer side wall; 120. Lower frame; 130. Receiving cavity; 140. Buckle; 150. Fastening part; 160. Limiting member; 170. First extension; 180. Second extension;

[0022] 200. Connecting unit; 210. Locking part; 220. Sleeve part; 230. Connecting shaft; 240. Neck; 250. Cavity; 260. Variable cross-section part; 261. First diameter; 262. Second diameter; 270. Recessed part; 280. Spring; 290. Threaded part;

[0023] 300. Engaging component; 310. Card slot;

[0024] 400. Drive motor; 410. Fan. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below, examples of which are shown in the accompanying drawings 1-3, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The following description is based on the accompanying drawings. Figure 1-3 The described embodiments are exemplary and intended to explain embodiments of the present invention, and should not be construed as limiting the present invention.

[0026] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element 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.

[0027] Furthermore, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0029] In one embodiment of this utility model, a robustly connected fan structure is provided, including a support frame 100, a drive motor 400, and a fan 410. The drive motor 400 is mounted on the support frame 100, and its drive end is connected to the fan 410 to drive its rotation. The support frame 100 includes an upper frame 110 and a lower frame 120 that fit together, with a receiving cavity 130 between them. The two symmetrical first outer sidewalls 111 of the upper frame 110 are each provided with a buckle 140. The lower frame 120... Each corresponding position is provided with a fastening part 150, and the buckle 140 is engaged with the fastening part 150; the support frame 100 is also provided with a detachable connecting unit 200 around its perimeter, including a locking part 210, a sleeve part 220 and a connecting shaft 230. The hollow sleeve part 220 is fixed at the corner end of the receiving cavity 130, and the lower end of the connecting shaft 230 passes through the upper frame 110 and extends into the sleeve part 220. The locking part 210 is detachably connected to the upper end of the connecting shaft 230, so that the connecting shaft 230 and the sleeve part 220 are locked together.

[0030] Specifically, the upper frame 110 has two symmetrical first outer sidewalls 111 equipped with buckles 140, and the lower frame 120 has corresponding fastening parts 150. During installation, simply align the upper frame 110 and the lower frame 120, and the buckles 140 will automatically engage with the fastening parts 150, achieving a quick and secure connection. Additionally, connecting units 200 are provided at the corners of the support frame 100. A connecting shaft 230 passes through the upper frame 110 from above and extends into the sleeve portion 220, finally being detachably connected to the upper end of the connecting shaft 230 via a locking part 210, thus locking the connecting shaft 230 to the sleeve portion 220. This significantly enhances the structural stability of the fan 410, reduces vibration and noise during operation, and extends its service life.

[0031] Furthermore, the bottom outer periphery of the sleeve portion 220 is formed with a constricted neck 240, which is narrower at the top and wider at the bottom, and the constricted neck 240 extends out of the lower frame 120; the sleeve portion 220 also has a cavity 280 inside; the bottom end of the connecting shaft 230 is provided with a frustum-shaped variable cross-section portion 260, which contacts the inner peripheral surface of the constricted neck 240; the middle end of the connecting shaft 230 is also provided with an outwardly protruding recessed portion 270, which is engaged in the cavity 280 to prevent the connecting shaft 230 from falling off. The upper end of the variable cross-section portion 260 is provided with a first diameter 261, and the lower end is provided with a second diameter 262, where the first diameter 261 is smaller than the second diameter 262; the first diameter 261 can extend into the constricted neck 240, while the second diameter 262 is limited outside the constricted neck 240. The maximum diameter of the variable cross-section portion 260 is much larger than the minimum diameter of the constricted neck 240. The top end of the connecting shaft 230 is provided with a threaded portion 290, which extends out of the upper frame 110; the locking portion 210 is threadedly connected to the threaded portion 290. Specifically, the connecting shaft 230 is assembled inside the sleeve portion 220, which fixes the bottom end of the connecting shaft 230. The locking portion 210 is threadedly connected to the threaded portion 290, so that the locking portion 210 is tightly attached to the upper end of the upper frame 110. As the connecting shaft 230 moves upward due to rotation, the variable cross-section portion 260 is pressed in the direction of the neck 240, and the variable cross-section portion 260 abuts against the inner circumferential surface of the neck 240. However, since the second diameter 262 is limited outside the neck 240, the variable cross-section portion 260 cannot be completely squeezed into the neck 240. Instead, the neck 240 is made of elastic plastic or metal, providing a certain elastic restoring force. This elastic restoring force is converted into downward pressure of the locking portion 210, which makes the locking portion 210 stably fix the upper frame 110 and the lower frame 120.

[0032] Furthermore, a spring 250 is also provided inside the cavity 280. One end of the spring 250 abuts against the inner end of the bottom wall of the cavity 280, and the other end abuts against the recessed platform. The addition of the spring 250 provides an additional downward force to the connecting shaft 230, which helps the connecting shaft 230 maintain a more stable fixed state in the sleeve portion 220, reducing the risk of loosening or falling off due to vibration or external force.

[0033] Furthermore, a limiting member 160 is provided at one corner of the lower frame 120. One end of the limiting member 160 extends downward to form a first extension 170, and the first extension 170 extends outward to form a second extension 180. A gap is provided between the first extension 170 and the second extension 180. This gap is designed to allow a certain structure or component (such as fan 410 blades, motor shaft, etc.) to move freely within a specific range of motion, while being restricted by the limiting member 160 to prevent it from exceeding the predetermined range of motion.

[0034] Furthermore, the upper frame 110 is also provided with two symmetrical second outer side walls 112, and the second outer side walls 112 are provided with engaging members 300. The lower frame 120 is also provided with an inwardly recessed groove 310 at the corresponding position. The engaging member 300 extends into the groove 310 and engages with it. Through the engaging connection of the engaging member 300 and the groove 310, a stable connection structure is formed between the upper frame 110 and the lower frame 120. This connection method can resist external pressure and vibration, ensuring the stability and reliability of the fan 410 structure.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A securely connected fan structure, comprising a support frame (100), a drive motor (400), and a fan (410), wherein the drive motor (400) is mounted on the support frame (100), and the drive end of the drive motor (400) is connected to the fan (410) to drive it to rotate, characterized in that, The support frame (100) includes an upper frame (110) and a lower frame (120) that fit together, with a receiving cavity (130) between them. The upper frame (110) has two symmetrical first outer sidewalls (111) with buckles (140), and the lower frame (120) has corresponding fastening parts (150). The buckles (140) engage with the fastening parts (150). The support frame (100) also has detachable connecting units (2) around its perimeter. 00), including a locking part (210), a sleeve part (220) and a connecting shaft (230), the hollow sleeve part (220) is fixed at the corner end of the receiving cavity (130), the lower end of the connecting shaft (230) passes through the upper frame (110) and extends into the sleeve part (220), the locking part (210) is detachably connected to the upper end of the connecting shaft (230), so that the connecting shaft (230) and the sleeve part (220) are locked together.

2. The robustly connected fan structure according to claim 1, characterized in that, The lower frame (120) is also provided with a limiting member (160) at one corner end. One end of the limiting member (160) extends downward to form a first extension (170), and the first extension (170) extends outward to form a second extension (180). There is a gap between the first extension (170) and the second extension (180).

3. The robustly connected fan structure according to claim 1, characterized in that, The sleeve portion (220) has a narrow neck (240) at the bottom outer periphery, which is narrower at the top and wider at the bottom, and the narrow neck (240) extends out of the lower frame (120); the sleeve portion (220) also has a cavity (250) inside; the bottom end of the connecting shaft (230) has a truncated cross-section portion (260) in the shape of a frustum, and the truncated cross-section portion (260) contacts the inner peripheral surface of the narrow neck (240); the middle end of the connecting shaft (230) also has an outwardly protruding concave portion (270), which is engaged in the cavity (250) to limit the connecting shaft (230) from falling off.

4. The securely connected fan structure according to claim 3, characterized in that, The upper end of the variable cross-section portion (260) is provided with a first diameter (261) and the lower end is provided with a second diameter (262). The first diameter (261) is smaller than the second diameter (262). The first diameter (261) can extend into the constricted neck (240), and the second diameter (262) is limited to outside the constricted neck (240).

5. The securely connected fan structure according to claim 3, characterized in that, The maximum diameter of the variable cross section (260) is much larger than the minimum diameter of the constricted neck (240).

6. The securely connected fan structure according to claim 3, characterized in that, The constricted neck (240) is made of elastic plastic or metal.

7. The robustly connected fan structure according to claim 3, characterized in that, A spring (280) is also provided inside the cavity (250). One end of the spring (280) abuts against the inner end of the bottom wall of the cavity (250), and the other end abuts against the recessed platform.

8. The securely connected fan structure according to claim 1, characterized in that, The top end of the connecting shaft (230) is provided with a threaded part (290), which extends out of the upper frame (110); the locking part (210) is threadedly connected to the threaded part (290).

9. The securely connected fan structure according to claim 1, characterized in that, The upper frame (110) is also provided with two symmetrical second outer side walls (112), and the second outer side walls (112) are provided with a biting member (300). The lower frame (120) is also provided with an inwardly recessed slot (310) at the corresponding position. The biting member (300) extends into the slot (310) and engages with it.

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