Connecting structure and fan

Abstract

The utility model relates to a connecting structure and a fan, the connecting structure comprises a first connecting piece, a second connecting piece and a rotation stopping piece, and the first connecting piece and the second connecting piece are in threaded connection. The rotation stopping piece comprises a rotation stopping buckle and a locking piece, the second connecting piece is further provided with a clamping groove, and the rotation stopping buckle is configured to be capable of being clamped into and separated from the clamping groove. The locking piece is provided with a locking position and an unlocking position which are switched through movement, and when the locking piece is located at the locking position, the rotation stopping buckle is limited in the clamping groove. According to the connecting structure, the rotation stopping buckle can be clamped into the clamping groove and is limited in the buckle groove by the locking piece moving to the locking position, so that the rotation stopping buckle cannot be separated from the clamping groove and limit relative rotation of the first connecting piece and the second connecting piece, the first connecting piece and the second connecting piece cannot rotate relative to each other, and then the probability of threaded connection loosening caused by factors such as high-frequency vibration is reduced; and the stability of threaded connection is improved. Meanwhile, the locking piece is switched to the unlocking position, and the user can normally rotate the first connecting piece and the second connecting piece to separate the first connecting piece and the second connecting piece.

Description

Technical Field

[0001] This application relates to the field of mechanical connection technology, and in particular to a connection structure and a fan. Background Technology

[0002] To facilitate transportation and storage, fans are usually designed with a detachable structure. In particular, the fan's support rod, due to its relatively long length, makes disassembly and assembly quite helpful for transportation and storage.

[0003] Currently, an increasing number of fan support rods on the market use threaded connections for fixation, which are characterized by simple assembly and high efficiency. However, during long-term high-speed operation, the fan's own high-frequency vibration over a long period of time can easily loosen the threads, causing unstable fan connections and even the risk of the fan head falling off. Utility Model Content

[0004] Therefore, it is necessary to provide a connection structure and fan that can improve the stability of threaded connections to address the above-mentioned problems.

[0005] A connection structure, the connection structure comprising:

[0006] A first connector and a second connector are configured to rotate relative to each other about a first axis and form a threaded connection.

[0007] An anti-rotation component includes an anti-rotation buckle and a locking component. The anti-rotation buckle is connected to the first connecting component to prevent rotation on the rotational direction around the first axis, and the locking component is movably disposed on the first connecting component.

[0008] The second connector also has a slot, and the anti-rotation buckle is configured to engage and disengage from the slot; at least one of the anti-rotation buckle and the slot has a guide surface, which is configured to guide the anti-rotation buckle to disengage from the slot when the first connector and the second connector rotate relative to each other about the first axis.

[0009] The locking member has a locking position and an unlocking position that can be switched by movement. When the locking member is in the locking position, the anti-rotation latch is confined in the slot by the locking member, and the slot limits the anti-rotation latch in its rotation around the first axis. When the locking member is in the unlocking position, the anti-rotation latch is not confined in the slot by the locking member.

[0010] In one embodiment, the anti-rotation buckle engages with the slot in the engagement direction; when the locking member is in the locked position, it abuts against the back of the anti-rotation buckle in the engagement direction.

[0011] In one embodiment, the first connector has a locking groove extending in a direction intersecting the horizontal direction and extending to the side facing the anti-rotation buckle in the insertion direction. The locking member is disposed in the locking groove and is slidable along the locking groove.

[0012] In one embodiment, the first connector can be threadedly connected to the second connector by rotating relative to the second connector in a first direction; the first connector can also be threadedly separated from the second connector by rotating relative to the second connector in a second direction; the anti-rotation buckle is engaged into the slot in the engagement direction;

[0013] The anti-rotation latch has a first guide surface and a second guide surface, both of which intersect the insertion direction. The first guide surface is configured to guide the anti-rotation latch out of the slot when the first connector rotates relative to the second connector along the first direction. The second guide surface is configured to guide the anti-rotation latch out of the slot when the first connector rotates relative to the second connector along the second direction. Alternatively, the slot has a third guide surface and a fourth guide surface, both of which intersect the insertion direction. The third guide surface is configured to guide the anti-rotation latch out of the slot when the first connector rotates relative to the second connector along the first direction. The fourth guide surface is configured to guide the anti-rotation latch out of the slot when the first connector rotates relative to the second connector along the second direction.

[0014] In one embodiment, the anti-rotation buckle includes a connected connecting arm and a buckle portion, the connecting arm being configured to undergo elastic deformation, and the buckle portion being disposed on the connecting arm and capable of engaging into the buckle slot when the connecting arm is driven.

[0015] In one embodiment, the anti-rotation member further includes an anti-rotation ring, which is sleeved on the first connector and engages with the first connector in a rotational direction around the first axis; the anti-rotation ring has a movable opening, one end of the connecting arm is connected to the edge of the movable opening, and the other end is movably located within the movable opening.

[0016] In one embodiment, the first connector further has a snap-fit ​​groove located on the back side of the anti-rotation snap in the snap-fit ​​direction.

[0017] In one embodiment, the second connector has a plurality of said slots, all of which are continuously arranged around the first axis.

[0018] In one embodiment, the first connector includes a threaded joint and an outer tube, and the anti-rotation buckle is disposed on the outer tube; the outer tube is sleeved on the threaded joint and is fixedly connected to the threaded joint.

[0019] A fan, comprising the connection structure described above.

[0020] The aforementioned connection structure and fan allow the first and second connecting parts to be threadedly connected via internal and external threads. After threaded connection, the anti-rotation latch engages with the slot and is confined within the latch slot by a locking element moved to the locking position. This prevents the latch from disengaging from the slot and limits the relative rotation of the first and second connecting parts, thus reducing the probability of loosening due to high-frequency vibration and improving the stability of the threaded connection. When it is necessary to separate the first and second connecting parts, simply switch the locking element to the unlocked position. In this position, the anti-rotation latch is not confined within the slot and can disengage from the slot as the first and second connecting parts rotate relative to each other. Therefore, the user can rotate the first and second connecting parts normally to separate them. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a partial cross-sectional schematic diagram of the connection structure in one embodiment of this application.

[0023] Figure 2 for Figure 1 The diagram shows an exploded view of the connection structure.

[0024] Figure 3 for Figure 1 The diagram shows the structure of the outer tube in the connection structure shown.

[0025] Figure 4 for Figure 1 The diagram shows the structure of the threaded joint in the connection structure shown.

[0026] Figure 5 for Figure 4 The diagram shows a threaded connector at another angle in the connection structure shown.

[0027] Figure 6 for Figure 1 The diagram shows the structure of the second connector in the connection structure shown.

[0028] Figure 7 for Figure 1 The diagram shows a cross-sectional view of the connection structure when the locking element is in the unlocked position.

[0029] Figure 8 for Figure 1 The diagram shows a cross-sectional view of the connection structure when the locking element is in the locked position.

[0030] Figure 9 for Figure 8 The diagram shows an enlarged view of the connection structure at point A.

[0031] Figure 10 for Figure 1 The diagram shows the structure of the stop-rotation buckle in the connection structure.

[0032] Explanation of reference numerals in the attached drawings: 100, connecting structure; 10, first connecting piece; 11, external thread; 13, threaded joint; 131, locking groove; 133, snap-fit ​​groove; 15, outer tube; 151, screw post; 30, second connecting piece; 31, internal thread; 33, snap-fit ​​groove; 331, third guide surface; 333, fourth guide surface; 35, internal tooth; 50, anti-rotation component; 51, anti-rotation snap-fit; 511, first guide surface; 513, second guide surface; 515, connecting arm; 517, snap-fit ​​part; 53, locking component; 55, anti-rotation ring; 551, movable opening; 70, threaded component. Detailed Implementation

[0033] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0034] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0035] Furthermore, where the term "and / or" appears, it merely describes the relationship between related objects and indicates that three relationships can exist. For example, A and / or B can represent the relationship between A and B: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this document generally indicates an "or" relationship between the related objects before and after it. Where the terms "first" and "second" appear, these terms 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. Therefore, a feature specified with "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, four, five, etc., unless otherwise explicitly specified.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0039] Please see Figure 1 and Figure 2 An embodiment of this application provides a connection structure 100, including a first connector 10, a second connector 30, and an anti-rotation member 50. One of the first connector 10 and the second connector 30 has an external thread 11, and the other has an internal thread 31. Both are configured to rotate relative to each other about a first axis to form a threaded connection through the internal thread 31 and the external thread 11. The anti-rotation member 50 includes an anti-rotation latch 51 and a locking member 53. The anti-rotation latch 51 prevents rotation of the first connector 10 in the direction of rotation about the first axis, and the locking member 53 is movably disposed on the first connector 10.

[0040] The second connector 30 also has a slot 33 (such as...) Figure 7 As shown, the anti-rotation latch 51 is configured to engage and disengage from the slot 33. At least one of the anti-rotation latch 51 and the slot 33 has a guide surface configured to guide the anti-rotation latch 51 out of the slot 33 when the first connector 10 and the second connector 30 rotate relative to each other about the first axis. The locking member 53 has a locked position and an unlocked position that can be switched by movement. When the locking member 53 is in the locked position, the anti-rotation latch 51 is confined within the slot 33 by the locking member 53, and the slot 33 limits the anti-rotation latch 51 in its rotation about the first axis. When the locking member 53 is in the unlocked position, the anti-rotation latch 51 is not confined within the slot 33 by the locking member 53.

[0041] The connecting structure 100 can be used for a fan, specifically for the fan's support rod. The first connecting member 10 and the second connecting member 30 can each correspond to a part of the support rod or be connected to a part of the support rod. Specifically, the first connecting member 10 can be the upper tube of the support rod, and the second connecting member 30 can be the lower tube of the support rod; the two can be connected and disconnected via a threaded connection. Specifically, the first connecting member 10 has an external thread 11, and the second connecting member 30 has an internal thread 31. It is understood that in some other embodiments, the first connecting member 10 may have an internal thread 31, and the second connecting member 30 may have an external thread 11; this is not specifically limited here.

[0042] The anti-rotation latch 51 prevents rotation of the first connecting member 10 during rotation around the first axis. Therefore, during rotation around the first axis, the anti-rotation latch 51 and the first connecting member 10 operate synchronously, rotating together or both stopping rotation. They can form an anti-rotation connection through an anti-rotation fitting structure, such as the anti-rotation latch 51 having an anti-rotation protrusion extending along the direction of the first axis, and the first connecting member 10 having an anti-rotation groove that mates with the anti-rotation protrusion. Furthermore, the anti-rotation latch 51 can also be fixedly connected to the first connecting member 10.

[0043] After the first connector 10 and the second connector 30 are threaded together, the position of the anti-rotation latch 51 in the direction of the first axis corresponds to the position of the slot 33. The anti-rotation latch 51 can engage with the slot 33 of the second connector 30. Engaging with the slot 33 means that the latching part 517 engages with the slot 33, forming an engagement relationship. Conversely, disengaging from the slot 33 means that the latching part 517 disengages from the slot 33, releasing the engagement relationship.

[0044] When the locking member 53 is in the locked position, it confines the locking member 53 within the slot 33 and prevents it from disengaging from the slot 33. The slot 33 provides a directional limit on the locking member 53 around the first axis, preventing it from rotating relative to the second connecting member 30. In other words, the anti-rotation latch 51 is engaged within the slot 33 and cannot disengage, thus preventing it from rotating around the first axis. Consequently, the first connecting member 10, which is anti-rotatingly connected to the anti-rotation latch 51, is also unable to rotate relative to the second connecting member 30.

[0045] When the locking member 53 is in the unlocked position, when the first connecting member 10 and the second connecting member 30 are driven to rotate relative to each other around the first axis, the anti-rotation buckle 51 can disengage from the slot 33 under the guidance of the guide surface, and therefore will not limit the relative rotation of the first connecting member 10 and the second connecting member 30 around the first axis.

[0046] The first connecting member 10 can rotate relative to the second connecting member 30 along a first direction and be threadedly connected to the second connecting member 30. Furthermore, when the locking member 53 is in the unlocked position, the first connecting member 10 can also rotate relative to the second connecting member 30 along a second direction and be threadedly disengaged from the second connecting member 30. When the locking member 53 is in the locked position, the first connecting member 10 cannot rotate relative to the second connecting member 30 along a second direction, thus disengaging from the second connecting member 30. The first and second directions are opposite.

[0047] In the aforementioned connection structure 100, the first connecting member 10 and the second connecting member 30 can be threaded together via internal threads 31 and external threads 11. After the two are threadedly connected, the anti-rotation latch 51 can engage with the slot 33 and is limited in the latch groove 133 by the locking member 53, which is moved to the locking position. This prevents the latch from disengaging from the slot 33 and limits the relative rotation of the first connecting member 10 and the second connecting member 30, thus reducing the probability of loosening of the threaded connection due to high-frequency vibration and other factors, and improving the stability of the threaded connection. When it is necessary to separate the first connecting member 10 and the second connecting member 30, simply switch the locking member 53 to the unlocked position. At this time, the anti-rotation latch 51 is not limited in the slot 33 and can disengage from the slot 33 as the first connecting member 10 and the second connecting member 30 rotate relative to each other. Therefore, the user can rotate the first connecting member 10 and the second connecting member 30 normally to separate them.

[0048] Please refer to the following: Figures 3 to 6 In some embodiments, the first connector 10 includes a threaded joint 13 and an outer tube 15. The threaded joint 13 has an external thread 11, and an anti-rotation buckle 51 is provided on the outer tube 15. The outer tube 15 is sleeved on the threaded joint 13 and is fixedly connected to the threaded joint 13.

[0049] Understandably, the second connector 30 has an internal thread 31. The following description uses the first connector 10 as the upper tube and the second connector 30 as the lower tube as an example to illustrate a specific embodiment of this application: The lower end of the threaded joint 13 of the first connector 10 is provided with an external thread 11. An anti-rotation buckle 51 is sleeved on the upper end of the external thread 11. The outer tube 15 is sleeved and fixedly connected to the threaded joint 13, while keeping the anti-rotation buckle 51 and the external thread 11 exposed to facilitate the engagement of the second connector 30. A groove 33 is provided inside the upper end of the second connector 30, and an internal thread 31 is provided at the lower end of the groove 33. The outer tube 15 may have a screw post 151, and the threaded joint 13 can be fixed to the outer tube 15 via a threaded component 70.

[0050] In this way, the threaded connector 13, the anti-rotation buckle 51, and the outer tube 15 can be assembled in sequence to complete the engagement between the first connector 10 and the anti-rotation buckle 51.

[0051] Please refer to the following: Figures 7 to 9 In some embodiments, the second connector 30 has a plurality of slots 33, all of which are continuously arranged around the first axis.

[0052] Specifically, the second connector 30 has a plurality of continuously arranged internal teeth 35 at the outer edge of the pipe opening. All the internal teeth 35 are arranged around the inner circumference of the entire second connector 30, and a groove 33 is formed between the internal teeth 35.

[0053] Thus, the first connector 10 and the second connector 30 can rotate continuously, and when they stop at any position, the anti-rotation buckle 51 can be engaged in the adjacent slot 33, and then locked by the locking member 53.

[0054] In some embodiments, the anti-rotation latch 51 engages with the slot 33 in the engagement direction. The anti-rotation latch 51 has a first guide surface 511 and a second guide surface 513, both intersecting the engagement direction. The first guide surface 511 is configured to guide the anti-rotation latch 51 out of the slot 33 when the first connector 10 rotates relative to the second connector 30 in a first direction. The second guide surface 513 is configured to guide the anti-rotation latch 51 out of the slot 33 when the first connector 10 rotates relative to the second connector 30 in a second direction. Alternatively, the slot 33 has a third guide surface 331 and a fourth guide surface 333, both of which intersect the insertion direction. The third guide surface 331 is configured to guide the anti-rotation latch 51 out of the slot 33 when the first connector 10 rotates relative to the second connector 30 in a first direction. The fourth guide surface 333 is configured to guide the anti-rotation latch 51 out of the slot 33 when the first connector 10 rotates relative to the second connector 30 in a second direction. Understandably, the third guide surface 331 and the fourth guide surface 333 serve as the two walls of the slot 33, which are also the two tooth surfaces of the internal teeth 35.

[0055] Thus, when the locking member 53 is in the unlocked position, the user drives the first connecting member 10 and the second connecting member 30 to rotate relative to each other. After the anti-rotation buckle 51 is inserted into the slot 33, it can smoothly and continuously disengage from the slot 33 under the guidance of the first guide surface 511 and the second guide surface 513 and / or the third guide surface 331 and the fourth guide surface 333, without getting stuck in the slot 33 and preventing the first connecting member 10 and the second connecting member 30 from rotating relative to each other, so that the user can connect and disconnect the first connecting member 10 and the second connecting member 30.

[0056] In some embodiments, the anti-rotation latch 51 engages with the latch groove 33 in the engagement direction. When the locking member 53 is in the locked position, it abuts against the back side of the anti-rotation latch 51 in the engagement direction.

[0057] Understandably, when the locking member 53 switches to the unlocked position, it leaves the back of the anti-rotation latch 51. The engaging direction can be, but is not limited to, a radial direction extending outward from the first rotating shaft.

[0058] Thus, after the anti-rotation latch 51 is engaged in the slot 33 in the engagement direction, the locking member 53 can move to the back of the anti-rotation latch 51 and abut against the anti-rotation latch 51 to prevent it from disengaging from the slot 33, thereby achieving the effect of confining it within the slot 33.

[0059] Furthermore, the first connector 10 has a locking groove 131, the extension direction of the locking groove 131 intersects the horizontal direction and extends to the back of the anti-rotation buckle 51 facing upward in the insertion direction, the locking member 53 is disposed in the locking groove 131 and can slide in the locking groove along the extension direction of the locking groove 131 to switch between the locked position and the unlocked position.

[0060] Specifically, the locking groove 131 is constructed on the threaded joint 13. When the locking member 53 moves to the two ends of the locking groove 131, they are respectively in the locked position and the unlocked position. The lower end of the locking groove 131 in the direction of gravity corresponds to the locked position, and the upper end corresponds to the unlocked position.

[0061] Thus, the extension direction of the locking groove 131 intersects the horizontal direction. When the connecting structure 100 is used normally as part of the support rod, the locking member 53 can be stably locked under the action of gravity, preventing the threads from loosening. When the user needs to disassemble the support rod, simply invert the support rod so that the locking member 53 moves to the unlocked position under the action of gravity. The operation is convenient and the locking is reliable.

[0062] Please refer to the following: Figure 10 In some embodiments, the anti-rotation buckle 51 includes a connected connecting arm 515 and a buckle portion 517. The connecting arm 515 is configured to undergo elastic deformation, and the buckle portion 517 is disposed on the connecting arm 515 and can be driven into the buckle slot 33 on the connecting arm 515.

[0063] The snapping direction of the anti-rotation buckle 51 is the moving direction of the buckle part 517 when it snaps into the slot 33. The anti-rotation buckle 51 enables the buckle part 517 to move between snapping into and disengaging from the slot 33 through the deformation of the connecting arm 515, and the connecting arm 515 is configured to provide the driving force for the buckle part 517 to snap into the slot 33.

[0064] Specifically, when the locking member 53 is in the locked position, it confines the latching part 517 within the latching groove 33. In the snapping direction, the latching part 517 is located at the front of the connecting arm 515, and when the locking member 53 is in the locked position, it abuts against the back of the connecting arm 515.

[0065] Thus, the latching part 517 can also be latched into the slot 33 under the drive of the connecting arm 515. At the same time, under the guidance of the guide surface, the latching part 517 can overcome the driving force of the connecting arm 515 by squeezing it, causing it to deform and disengage from the slot 33.

[0066] Understandably, in some other embodiments, the anti-rotation latch 51 may also be provided with a driving force to engage with the latch 33 by means of an elastic element such as a spring, which is not specifically limited here.

[0067] In some embodiments, the anti-rotation member 50 further includes an anti-rotation ring 55, which is sleeved on the first connector 10 and engages with the first connector 10 in a rotational direction about the first axis. The anti-rotation ring 55 has a movable opening 551, one end of the connecting arm 515 is connected to the edge of the movable opening 551, and the other end is movably located within the movable opening 551.

[0068] Understandably, one end of the connecting arm 515 is the connecting end, which is connected to the edge of the movable opening 551 of the anti-rotation ring 55, and the other end is the free end, so that the connecting arm 515 can undergo elastic deformation within the movable opening 551.

[0069] Specifically, the anti-rotation ring 55 is sleeved on the threaded joint 13, and it has an anti-rotation protrusion. The threaded joint 13 has an anti-rotation groove. The two are connected to prevent rotation by the cooperation of the anti-rotation protrusion and the anti-rotation groove.

[0070] Thus, the latching part 517 can move along with the connecting arm 515 within the movable opening 551.

[0071] In some embodiments, the first connector 10 further has a snap-fit ​​groove 133, which is located on the back side of the anti-rotation snap 51 in the snap-fit ​​direction.

[0072] Understandably, the size of the latching groove 133 is larger than that of the anti-rotation latch 51. The latching groove 133 provides clearance for the anti-rotation latch 51, so that when the anti-rotation latch 51 disengages from the latching groove 33, it at least partially enters the latching groove 133. At the same time, the locking slide 131 connects to the latching groove 133 so that the locking member 53 can move to abut against the back of the anti-rotation latch 51.

[0073] Specifically, the snap-fit ​​groove 133 is constructed on the threaded joint 13 and is located above the external thread 11. The connecting arm 515 and the snap-fit ​​part 517 of the anti-rotation snap-fit ​​51 are aligned with the snap-fit ​​groove 133 on the threaded joint 13.

[0074] Thus, the latching groove 133 provides space for the anti-rotation latch 51 to move during the process of engaging and disengaging from the latching groove 33.

[0075] For ease of understanding, the assembly process of the above-mentioned connection structure 100 is briefly described below:

[0076] The anti-rotation ring 55 is fixed to the threaded connector 13, which is fixedly connected to the outer tube 15 via a threaded component 70. The locking component 53 is placed between the threaded connector 13 and the anti-rotation ring 55, located within the locking groove 131. The outer tube 15, the anti-rotation ring 55, the locking component 53, and the threaded connector 13 constitute the upper tube assembly. The upper tube assembly is connected to the second connecting component 30, which serves as the lower tube, via threads, forming the fan's support rod.

[0077] The aforementioned connection structure 100 has a locking groove 131 on the threaded connector 13, in which the locking member 53 can slide freely up and down. The threaded connector 13 also has a snap-fit ​​groove 133, and an anti-rotation snap-fit ​​51 is connected to the anti-rotation ring 55. The snap-fit ​​groove 133 is located behind the anti-rotation snap-fit ​​51, and its size is larger than that of the anti-rotation snap-fit ​​51, allowing the anti-rotation snap-fit ​​51 to deform and move freely within it. When the locking member 53 moves to the back of the anti-rotation snap-fit ​​51, it restricts the backward deformation of the anti-rotation snap-fit ​​51. When the locking member 53 leaves the back of the anti-rotation snap-fit ​​51, the anti-rotation snap-fit ​​51 can deform freely backward. Under normal circumstances, the locking member 53 is positioned behind the anti-rotation snap-fit ​​51 due to gravity, and the anti-rotation snap-fit ​​51 cannot deform. When the upper and lower tubes are inverted, the locking member 53 leaves the back of the anti-rotation snap-fit ​​51 due to gravity.

[0078] The inner ring of the second connector 30 has internal teeth 35, with a third guide surface 331 and a fourth guide surface 333 on either side of the internal teeth 35. Similarly, the locking part 517 of the anti-rotation buckle 51 has a first guide surface 511 on one side and a second guide surface 513 on the other. During tightening, the upper and lower tubes are inverted. Under the action of the guide surfaces, the anti-rotation buckle 51 will not be stuck in the slot 33. Therefore, the first connector 10 and the second connector 30 can be tightened smoothly. In normal use, with the upper and lower tubes upright, the locking member 53 abuts against the anti-rotation buckle 51, preventing it from deforming and locking in the slot 33. The first connector 10 and the second connector 30 cannot be threaded apart. At this time, the first connector 10 and the second connector 30 are stably connected, with less interference from external factors such as vibration. Similarly, when it is necessary to loosen, simply invert the upper and lower tubes so that the locking part 53 is away from the back of the anti-rotation buckle 51. When the tube is twisted forcefully, the anti-rotation buckle 51 will be deformed and retracted under the guidance of the guide surface, and the upper and lower tubes can be easily unscrewed.

[0079] This application also provides a fan, including the connection structure 100 described above, and the fan can be, but is not limited to, a circulation fan.

[0080] Specifically, the fan includes a support rod, which includes an upper tube and a lower tube, and the upper and lower tubes are detachably connected. The first connector 10 of the connection structure 100 corresponds to the upper tube of the support rod, and the second connector 30 corresponds to the lower tube of the support rod.

[0081] In addition, the fan may also include a head and a chassis, with the top of the upper tube connected to the head and the bottom of the lower tube connected to the chassis.

[0082] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A connection structure, characterized in that, The connection structure includes: A first connector (10) and a second connector (30) are configured to rotate relative to each other about a first axis and form a threaded connection. The anti-rotation component (50) includes an anti-rotation buckle (51) and a locking component (53). The anti-rotation buckle (51) is anti-rotatingly connected to the first connector (10) on the rotational direction around the first axis, and the locking component (53) is movably disposed on the first connector (10). The second connector (30) also has a slot (33), and the anti-rotation buckle (51) is configured to engage and disengage from the slot (33); at least one of the anti-rotation buckle (51) and the slot (33) has a guide surface, which is configured to guide the anti-rotation buckle (51) to disengage from the slot (33) when the first connector (10) and the second connector (30) rotate relative to each other about the first axis; The locking member (53) has a locking position and an unlocking position that can be switched by movement. When the locking member (53) is in the locking position, the anti-rotation buckle (51) is limited by the locking member (53) in the slot (33), and the slot (33) limits the anti-rotation buckle (51) in its rotation around the first axis. When the locking member (53) is in the unlocking position, the anti-rotation buckle (51) is not limited by the locking member (53) in the slot (33).

2. The connection structure according to claim 1, characterized in that, The anti-rotation buckle (51) is inserted into the slot (33) in the insertion direction; when the locking member (53) is in the locked position, it abuts against the back side of the anti-rotation buckle (51) in the insertion direction.

3. The connection structure according to claim 2, characterized in that, The first connector (10) has a locking groove (131) whose extension direction intersects the horizontal direction and extends to the back of the anti-rotation buckle (51) in the snap-in direction. The locking member (53) is disposed in the locking groove (131) and can slide along the locking groove (131).

4. The connection structure according to claim 1, characterized in that, The first connector (10) can be threadedly connected to the second connector (30) by rotating relative to the second connector (30) in a first direction; the first connector (10) can also be threadedly separated from the second connector (30) by rotating relative to the second connector (30) in a second direction; the anti-rotation buckle (51) is engaged in the slot (33) in the engaging direction. The anti-rotation latch (51) has a first guide surface (511) and a second guide surface (513), both of which intersect the insertion direction. The first guide surface (511) is configured to guide the anti-rotation latch (51) out of the slot (33) when the first connector (10) rotates relative to the second connector (30) along the first direction. The second guide surface (513) is configured to guide the anti-rotation latch (51) out of the slot (33) when the first connector (10) rotates relative to the second connector (30) along the second direction. / Or, the slot (33) has a third guide surface (331) and a fourth guide surface (333), both of which intersect the snap-in direction. The third guide surface (331) is configured to guide the anti-rotation buckle (51) out of the slot (33) when the first connector (10) rotates relative to the second connector (30) along the first direction. The fourth guide surface (333) is configured to guide the anti-rotation buckle (51) out of the slot (33) when the first connector (10) rotates relative to the second connector (30) along the second direction.

5. The connection structure according to claim 1, characterized in that, The anti-rotation buckle (51) includes a connected connecting arm (515) and a buckle part (517). The connecting arm (515) is configured to undergo elastic deformation, and the buckle part (517) is provided on the connecting arm (515) and can be driven into the buckle slot (33) by the connecting arm (515).

6. The connection structure according to claim 5, characterized in that, The anti-rotation member (50) further includes an anti-rotation ring (55), which is sleeved on the first connector (10) and anti-rotates with the first connector (10) in the direction of rotation around the first axis; the anti-rotation ring (55) has a movable opening (551), one end of the connecting arm (515) is connected to the edge of the movable opening (551), and the other end is movably located in the movable opening (551).

7. The connection structure according to claim 5, characterized in that, The first connector (10) also has a snap-fit ​​groove (133) located on the back side of the anti-rotation snap (51) in the snap-fit ​​direction.

8. The connection structure according to claim 1, characterized in that, The second connector (30) has a plurality of said slots (33), all of said slots (33) being arranged continuously around the first axis.

9. The connection structure according to claim 1, characterized in that, The first connector (10) includes a threaded joint (13) and an outer tube (15). The anti-rotation buckle (51) is provided on the outer tube (15). The outer tube (15) is sleeved on the threaded joint (13) and is fixedly connected to the threaded joint (13).

10. A fan, characterized in that, Includes the connection structure as described in any one of claims 1-9.

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