Connecting structure and fan

Abstract

The invention 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] The present application relates to the technical field of mechanical connection, and in particular to a connection structure and a fan. Background Art

[0002] In order to facilitate transportation and storage, fans usually adopt a detachable structure. Among them, the fan support rod is relatively long, so its disassembly and assembly are more helpful for transportation and storage.

[0003] At present, more and more fan support rods on the market are fixed by threaded connection, which is easy to assemble and highly efficient. However, during the long-term high-speed operation of the fan, its own long-term high-frequency vibration often makes the thread loose, resulting in unstable fan connection and even the risk of the fan head falling off. Summary of the invention

[0004] Based on this, it is necessary to provide a connection structure and a fan that can improve the stability of threaded connection in order to solve the above problems.

[0005] A connection structure, comprising:

[0006] A first connecting member and a second connecting member, wherein the first connecting member and the second connecting member are configured to be relatively rotatable around a first axis and form a threaded connection;

[0007] The anti-rotation member comprises an anti-rotation buckle and a locking member, wherein the anti-rotation buckle is connected to the first connecting member in a rotational direction around the first axis, and the locking member is movably arranged on the first connecting member;

[0008] Wherein, the second connecting member further has a slot, and the anti-rotation buckle is configured to be able to be inserted into and disengaged from the slot; at least one of the anti-rotation buckle and the slot has a guide surface, and the guide surface is configured to generate a guide to guide the anti-rotation buckle to disengage from the slot when the first connecting member and the second connecting member rotate relative to each other around the first axis;

[0009] The locking member has a locking position and an unlocking position which are switched by movement. When the locking member is in the locking position, the anti-rotation buckle is limited by the locking member in the slot, and the slot limits the anti-rotation buckle in the rotation around the first axis. When the locking member is in the unlocking position, the anti-rotation buckle is not limited by the locking member in the slot.

[0010] In one of the embodiments, the anti-rotation buckle is inserted into the slot along the insertion direction; when the locking member is in the locking position, it abuts against the back side of the anti-rotation buckle in the insertion direction.

[0011] In one embodiment, the first connecting member has a locking groove, the extension direction of which intersects with the horizontal direction and extends to the direction of the back side of the anti-rotation buckle in the insertion direction. The locking member is arranged in the locking groove and can slide along the locking groove.

[0012] In one embodiment, the first connecting member can be threadedly connected to the second connecting member by rotating relative to the second connecting member along a first direction; the first connecting member can also be threadedly separated from the second connecting member by rotating relative to the second connecting member along a second direction; the anti-rotation buckle is inserted into the slot along the insertion direction;

[0013] The anti-rotation buckle has a first guide surface and a second guide surface, the first guide surface and the second guide surface both intersect with the insertion direction, the first guide surface is configured to guide the anti-rotation buckle to disengage from the slot when the first connecting member rotates relative to the second connecting member along the first turning direction, and the second guide surface is configured to guide the anti-rotation buckle to disengage from the slot when the first connecting member rotates relative to the second connecting member along the second turning direction; and / or, the slot has a third guide surface and a fourth guide surface, the third guide surface and the fourth guide surface both intersect with the insertion direction, the third guide surface is configured to guide the anti-rotation buckle to disengage from the slot when the first connecting member rotates relative to the second connecting member along the first turning direction, and the fourth guide surface is configured to guide the anti-rotation buckle to disengage from the slot when the first connecting member rotates relative to the second connecting member along the second turning direction.

[0014] In one embodiment, the anti-rotation buckle includes a connected connecting arm and a buckle portion, the connecting arm is configured to be able to undergo elastic deformation, and the buckle portion is provided on the connecting arm and can be snapped into the slot when the connecting arm is driven.

[0015] In one embodiment, the anti-rotation member also includes a anti-rotation ring, which is sleeved on the first connecting member and cooperates with the first connecting member to stop rotation when rotating 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 in the movable opening.

[0016] In one of the embodiments, the first connecting member further has a buckle groove, and the buckle groove is located on the back side of the anti-rotation buckle in the buckling direction.

[0017] In one embodiment, the second connecting member has a plurality of the slots, and all of the slots are continuously arranged around the first axis.

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

[0019] A fan comprises the above-mentioned connection structure.

[0020] In the above-mentioned connection structure and fan, the first connecting member and the second connecting member can be threadedly connected by means of internal threads and external threads. After the two are threadedly connected, the anti-rotation buckle can be inserted into the card slot, and the locking member moved to the locking position is limited in the card slot, so that it cannot be separated from the card slot and the relative rotation of the first connecting member and the second connecting member is limited, so that the two cannot rotate relative to each other, thereby reducing the probability of loosening of the threaded connection due to factors such as high-frequency vibration and improving the stability of the threaded connection. When it is necessary to separate the first connecting member and the second connecting member, it is only necessary to switch the locking member to the unlocking position. At this time, the anti-rotation buckle is not limited in the card slot and can be separated from the card slot with the relative rotation of the first connecting member and the second connecting member. Therefore, the user can rotate the first connecting member and the second connecting member normally to separate the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

[0023] Figure 2 for Figure 1 Schematic diagram of the connection structure breakdown shown.

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

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

[0026] Figure 5 for Figure 4 A schematic structural diagram of the threaded joint in the connection structure shown in FIG.

[0027] Figure 6 for Figure 1 A schematic structural diagram of the second connecting member in the connecting structure shown.

[0028] Figure 7 for Figure 1 The schematic structural diagram of the cross section of the connecting structure shown is when the locking member is in the unlocking position.

[0029] Figure 8 for Figure 1 The schematic diagram of the cross-section structure of the connecting structure shown is when the locking member is in the locking position.

[0030] Fig. 9 for Figure 8 A schematic diagram of the enlarged structure of the connection structure shown.

[0031] Fig.10 for Figure 1 The structural schematic diagram of the stop buckle in the connection structure shown.

[0032] Explanation of the accompanying drawings: 100, connecting structure; 10, first connecting member; 11, external thread; 13, threaded joint; 131, locking groove; 133, snap groove; 15, outer tube; 151, screw column; 30, second connecting member; 31, internal thread; 33, snap groove; 331, third guide surface; 333, fourth guide surface; 35, internal teeth; 50, anti-rotation member; 51, anti-rotation snap; 511, first guide surface; 513, second guide surface; 515, connecting arm; 517, snap portion; 53, locking member; 55, anti-rotation ring; 551, movable opening; 70, threaded member. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0034] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore it should not be understood as a limitation on the present application.

[0035] In addition, if the term "and / or" appears, "and / or" is merely a way to describe the association relationship between associated objects, and indicates that three relationships may exist, for example, A and / or B can represent the association relationship between A and B: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that there is an "or" relationship between the associated objects before and after it. If the terms "first" and "second" appear, these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, four, five, etc., unless otherwise clearly and specifically defined.

[0036] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, 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 implementation method.

[0039] See also Figure 1 and Figure 2 , a connection structure 100 provided in an embodiment of the present application includes a first connection member 10, a second connection member 30 and a rotation-stopping member 50. One of the first connection member 10 and the second connection member 30 has an external thread 11, and the other has an internal thread 31. The two are configured to be relatively rotatable around a first axis, so as to form a threaded connection through the internal thread 31 and the external thread 11. The rotation-stopping member 50 includes a rotation-stopping buckle 51 and a locking member 53. The rotation-stopping buckle 51 is rotationally connected to the first connection member 10 in a rotation direction around the first axis, and the locking member 53 is movably provided on the first connection member 10.

[0040] The second connecting member 30 also has a slot 33 (such as Figure 7 As shown in the figure, the anti-rotation buckle 51 is configured to be able to be inserted into and out of the card slot 33; at least one of the anti-rotation buckle 51 and the card slot 33 has a guide surface, and the guide surface is configured to be able to guide the anti-rotation buckle 51 to be out of the card slot 33 when the first connecting member 10 and the second connecting member 30 rotate relative to each other around the first axis. The locking member 53 has a locking position and an unlocking position that are 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 card slot 33, and the card slot 33 limits the anti-rotation buckle 51 in the 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 card slot 33.

[0041] The connection structure 100 can be used for a fan, and specifically for a support rod of a fan, wherein the first connection member 10 and the second connection member 30 can respectively correspond to a part of the support rod or respectively connect a part of the support rod. Specifically, the first connection member 10 can be an upper tube of the support rod, and the second connection member 30 can be a lower tube of the support rod, and the two can be disconnected by a threaded connection. Specifically, the first connection member 10 has an external thread 11, and the second connection member 30 has an internal thread 31. It can be understood that in some other embodiments, the first connection member 10 can also have an internal thread 31, and the second connection member 30 can also have an external thread 11, which is not specifically limited here.

[0042] The anti-rotation buckle 51 is anti-rotatably connected to the first connecting member 10 in the direction of rotation around the first axis, so in the direction of rotation around the first axis, the anti-rotation buckle 51 and the first connecting member 10 act synchronously, and the two rotate together or stop rotating together. The two can form an anti-rotation connection through an anti-rotation matching structure, for example, the anti-rotation buckle 51 has an anti-rotation protrusion extending along the direction of the first axis, and the first connecting member 10 has an anti-rotation groove matching with the anti-rotation protrusion. In addition, the anti-rotation buckle 51 can also be fixedly connected to the first connecting member 10.

[0043] After the first connector 10 and the second connector 30 are threadedly connected, the position of the anti-rotation buckle 51 in the direction of the first axis corresponds to the position of the slot 33. The anti-rotation buckle 51 can be inserted into the slot 33 of the second connector 30. The anti-rotation buckle 51 is inserted into the slot 33, which means that the buckle portion 517 is inserted into the slot 33 to form an engagement relationship with the slot 33. Correspondingly, the anti-rotation buckle 51 is separated from the slot 33, which means that the buckle portion 517 is separated from the slot 33, and the engagement relationship with the slot 33 is released.

[0044] When the locking member 53 is in the locked position, the locking member 53 is limited in the slot 33 and cannot be separated from the slot 33. The slot 33 can limit the locking member 53 in rotation around the first axis, so that it cannot rotate relative to the second connecting member 30. In other words, the anti-rotation buckle 51 is engaged in the slot 33 and cannot be separated, and thus cannot rotate around the first axis. Accordingly, the first connecting member 10 anti-rotationally connected to the anti-rotation buckle 51 cannot rotate relative to the second connecting member 30.

[0045] When the locking member 53 is in the unlocking position, when driving the first connecting member 10 and the second connecting member 30 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, thereby not limiting 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 be threadedly connected to the second connecting member 30 by rotating relative to the second connecting member 30 along the first direction. When the locking member 53 is in the unlocking position, the first connecting member 10 can also be threadedly separated from the second connecting member 30 by rotating relative to the second connecting member 30 along the second direction. When the locking member 53 is in the locking position, the first connecting member 10 cannot be rotated relative to the second connecting member 30 along the second direction, and is threadedly separated from the second connecting member 30, and the first direction is opposite to the second direction.

[0047] In the above connection structure 100, the first connector 10 and the second connector 30 can be threadedly connected through the internal thread 31 and the external thread 11. After the two are threadedly connected, the anti-rotation buckle 51 can be inserted into the card slot 33, and the locking member 53 moved to the locking position is limited in the buckle slot 133, so that it cannot be separated from the card slot 33 and the relative rotation of the first connector 10 and the second connector 30 is limited, so that the two cannot rotate relative to each other, thereby reducing the probability of loosening of the threaded connection due to factors such as high-frequency vibration, and improving the stability of the threaded connection. When it is necessary to separate the first connector 10 and the second connector 30, it is only necessary to switch the locking member 53 to the unlocking position. At this time, the anti-rotation buckle 51 is not limited in the card slot 33, and can be separated from the card slot 33 with the relative rotation of the first connector 10 and the second connector 30. Therefore, the user can normally rotate the first connector 10 and the second connector 30 to separate the two.

[0048] Please also read Figures 3 to 6 In some embodiments, the first connector 10 includes a threaded connector 13 and an outer tube 15, the threaded connector 13 has an outer thread 11, and a rotation stop buckle 51 is disposed on the outer tube 15. The outer tube 15 is sleeved outside the threaded connector 13 and fixedly connected to the threaded connector 13.

[0049] It can be understood that the second connecting member 30 has an internal thread 31. The following takes the first connecting member 10 as an upper tube and the second connecting member 30 as a lower tube as an example to illustrate a specific embodiment of the present application: an external thread 11 is provided at the lower end of the threaded joint 13 of the first connecting member 10, a rotation-stopping buckle 51 is sleeved on the upper end of the external thread 11, and an outer tube 15 is sleeved and fixedly connected to the outside of the threaded joint 13, while keeping the rotation-stopping buckle 51 and the external thread 11 exposed to facilitate the cooperation of the second connecting member 30. A card slot 33 is provided in the upper end of the second connecting member 30, and an internal thread 31 is provided at the lower end of the card slot 33. Among them, the outer tube 15 may have a screw column 151, and the threaded joint 13 may be fixed to the outer tube 15 by a threaded member 70.

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

[0051] Please also read Figures 7 to 9 In some embodiments, the second connecting member 30 has a plurality of slots 33, and all the slots 33 are continuously arranged around the first axis.

[0052] Specifically, the second connecting member 30 forms a plurality of continuously arranged inner teeth 35 at the outer edge of the pipe opening, all of the inner teeth 35 are arranged around the inner circumference of the entire second connecting member 30 , and slots 33 are formed between the inner teeth 35 .

[0053] In this way, the first connecting member 10 and the second connecting member 30 can rotate continuously, and when stopped at any position, the anti-rotation buckle 51 can be inserted into the adjacent slot 33 and then locked by the locking member 53 .

[0054] In some embodiments, the anti-rotation buckle 51 is inserted into the card slot 33 along the insertion direction. The anti-rotation buckle 51 has a first guide surface 511 and a second guide surface 513, both of which intersect with the insertion direction, and the first guide surface 511 is configured to guide the anti-rotation buckle 51 to disengage from the card slot 33 when the first connecting member 10 rotates relative to the second connecting member 30 along the first turning direction, and the second guide surface 513 is configured to guide the anti-rotation buckle 51 to disengage from the card slot 33 when the first connecting member 10 rotates relative to the second connecting member 30 along the second turning direction; and Or, the slot 33 has a third guide surface 331 and a fourth guide surface 333, the third guide surface 331 and the fourth guide surface 333 both intersect with the insertion direction, the third guide surface 331 is configured to guide the anti-rotation buckle 51 to disengage from the slot 33 when the first connecting member 10 rotates relative to the second connecting member 30 along the first turning direction, and the fourth guide surface 333 is configured to guide the anti-rotation buckle 51 to disengage from the slot 33 when the first connecting member 10 rotates relative to the second connecting member 30 along the second turning direction. It can be understood that the third guide surface 331 and the fourth guide surface 333 serve as two wall surfaces of the slot 33, that is, the two tooth surfaces of the inner teeth 35.

[0055] In this way, 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 being inserted into the slot 33, the anti-rotation buckle 51 can be smoothly and continuously disengaged 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, and will not be stuck in the slot 33 to prevent the first connecting member 10 and the second connecting member 30 from rotating relative to each other, so that the user can disconnect the first connecting member 10 and the second connecting member 30.

[0056] In some embodiments, the anti-rotation buckle 51 is inserted into the slot 33 along the insertion direction. When the locking member 53 is in the locking position, it abuts against the back side of the anti-rotation buckle 51 in the insertion direction.

[0057] It can be understood that when the locking member 53 is switched to the unlocking position, it leaves the back side of the anti-rotation buckle 51. The locking direction may be, but is not limited to, a radial direction extending outward from the first rotating shaft.

[0058] In this way, after the anti-rotation buckle 51 is inserted into the slot 33 along the insertion direction, the locking piece 53 can move to the back of the anti-rotation buckle 51 and press against the anti-rotation buckle 51 to prevent it from escaping from the slot 33, thereby achieving the effect of limiting it in the slot 33.

[0059] Furthermore, the first connecting member 10 has a locking groove 131, the extension direction of which intersects with the horizontal direction and extends to the back side of the stop buckle 51 in the insertion direction. The locking member 53 is arranged 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, and the locking piece 53 moves to the two ends of the locking groove 131 and corresponds to the locking position and the unlocking position respectively, wherein the lower end of the locking groove 131 in the gravity direction corresponds to the locking position, and the top end corresponds to the unlocking position.

[0061] In this way, the extension direction of the locking slot 131 intersects with the horizontal direction, and when the connection structure 100 is used normally as a part of the support rod, the locking member 53 can be stably in the locked position under the action of gravity to prevent the thread from loosening. When the user needs to disassemble the support rod, he only needs to invert the support rod so that the locking member 53 is transferred to the unlocked position under the action of gravity, which is convenient to operate and reliable to lock.

[0062] Please also read Fig.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 be able to undergo elastic deformation, and the buckle portion 517 is provided on the connecting arm 515 and can be driven into the slot 33 when the connecting arm 515 is driven.

[0063] The locking direction of the anti-rotation buckle 51 is the moving direction of the buckle part 517 when it is locked into the slot 33. The anti-rotation buckle 51 enables the buckle part 517 to move between locking in and disengaging from the slot 33 through the deformation of the connecting arm 515, and the connecting arm 515 is configured to provide a driving force to drive the buckle part 517 to lock into the slot 33.

[0064] Specifically, when the locking member 53 is in the locking position, the buckle portion 517 is limited in the slot 33. In the insertion direction, the buckle portion 517 is arranged in front of the connecting arm 515, and when the locking member 53 is in the locking position, it abuts against the back of the connecting arm 515.

[0065] In this way, the buckle portion 517 can also be driven by the connecting arm 515 to be inserted into the slot 33. At the same time, under the guidance of the guide surface, the buckle portion 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] It is understandable that in some other embodiments, the anti-rotation buckle 51 can also provide a driving force to drive it into the slot 33 through an elastic member 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 connecting member 10 and anti-rotates with the first connecting member 10 in the 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.

[0068] It can be understood that one end of the connecting arm 515 is a connecting end connected to the edge of the movable opening 551 of the stop ring 55 , and the other end is a free end so that the connecting arm 515 can be elastically deformed in the movable opening 551 .

[0069] Specifically, the anti-rotation ring 55 is sleeved on the threaded joint 13, and an anti-rotation protrusion is constructed on it, and an anti-rotation groove is constructed on the threaded joint 13. The anti-rotation protrusion and the anti-rotation groove cooperate to achieve an anti-rotation connection between the two.

[0070] In this way, the buckle portion 517 can move along with the connection arm 515 moving in the movable opening 551 .

[0071] In some embodiments, the first connecting member 10 further has a buckle groove 133 , and the buckle groove 133 is located on the back side of the anti-rotation buckle 51 in the buckling direction.

[0072] It can be understood that the size of the buckle groove 133 is larger than the anti-rotation buckle 51, and the buckle groove 133 generates an avoidance for the anti-rotation buckle 51. When the anti-rotation buckle 51 is separated from the slot 33, at least part of it enters the buckle groove 133. At the same time, the locking groove 131 is connected to the buckle groove 133, so that the locking member 53 can move to stop at the back of the anti-rotation buckle 51.

[0073] Specifically, the buckle groove 133 is configured on the threaded joint 13 and is located above the external thread 11. The connection arm 515 and the buckle portion 517 of the anti-rotation buckle 51 are aligned with the buckle groove 133 on the threaded joint 13.

[0074] In this way, the buckle slot 133 can provide a movable space for the anti-rotation buckle 51 so that it can move in the process of being inserted into and released from the buckle slot 33 .

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

[0076] The stop ring 55 is fixed on the threaded joint 13, and the threaded joint 13 is fixedly connected to the outer tube 15 through the threaded member 70. The locking member 53 is placed between the threaded joint 13 and the stop ring 55 and is located in the locking groove 131. The outer tube 15, the stop ring 55, the locking member 53, and the threaded joint 13 form an upper tube assembly, which is threadedly connected to the second connecting member 30 as the lower tube to form a support rod of the fan.

[0077] The above-mentioned connection structure 100 has a locking groove 131 on the threaded joint 13, and the locking member 53 is placed in the locking groove 131 and can slide freely up and down. The threaded joint 13 also has a buckle groove 133, and the anti-rotation buckle 51 is connected to the anti-rotation buckle 51 on the anti-rotation ring 55. The buckle groove 133 is placed behind the anti-rotation buckle 51, and the size of the buckle groove 133 is larger than the anti-rotation buckle 51. The anti-rotation buckle 51 can be deformed and moved freely in the buckle groove 133. When the locking member 53 moves to the back of the anti-rotation buckle 51, the locking member 53 will limit the anti-rotation buckle 51 from deforming backwards. When the locking member 53 leaves the back of the anti-rotation buckle 51, the anti-rotation buckle 51 can deform freely backwards. Under normal circumstances, the locking member 53 is placed on the back of the anti-rotation buckle 51 under the influence of gravity, and the anti-rotation buckle 51 cannot be deformed. When the upper and lower tubes are inverted, the locking member 53 leaves the back of the anti-rotation buckle 51 under the influence of gravity.

[0078] The inner ring of the second connecting member 30 has an inner tooth 35, and the inner teeth 35 are respectively provided with a third guide surface 331 and a fourth guide surface 333 on both sides. The buckle portion 517 of the anti-rotation buckle 51 also has a first guide surface 511 on one side and a second guide surface 513 on the other side. During the tightening process, the upper and lower tubes are inverted, and under the action of the guide surface, the anti-rotation buckle 51 will not be stuck in the slot 33, so the first connecting member 10 and the second connecting member 30 can be tightened smoothly. In normal use, the upper and lower tubes are upright, and the locking member 53 resists the anti-rotation buckle 51, so that it cannot be deformed and stuck in the slot 33, and the first connecting member 10 and the second connecting member 30 cannot be threadedly separated. At this time, the first connecting member 10 and the second connecting member 30 are stably connected, and are less disturbed by external factors such as vibration. Similarly, when it is necessary to loosen, just invert the upper and lower tubes to allow the locking piece 53 to leave the back of the anti-rotation buckle 51. When the tube is twisted hard, the anti-rotation buckle 51 will be deformed and retreat under the guidance of the guide surface, and the upper and lower tubes can be easily unscrewed.

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

[0080] Specifically, the fan includes a support rod, the support rod includes an upper tube and a lower tube, and the upper tube and the lower tube are detachably connected. Among them, the first connecting member 10 of the connecting structure 100 corresponds to the upper tube of the support rod, and the second connecting member 30 corresponds to the lower tube of the support tube.

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

[0082] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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 above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A connection structure, characterized in that: The connection structure comprises: A first connecting member (10) and a second connecting member (30), wherein the first connecting member (10) and the second connecting member (30) are configured to be relatively rotatable around a first axis and to form a threaded connection; The anti-rotation member (50) comprises an anti-rotation buckle (51) and a locking member (53), wherein the anti-rotation buckle (51) is anti-rotatably connected to the first connecting member (10) in a rotation direction around the first axis, and the locking member (53) is movably arranged on the first connecting member (10); The second connecting member (30) further comprises a slot (33), and the anti-rotation buckle (51) is configured to be able to be inserted into and disengaged from the slot (33); at least one of the anti-rotation buckle (51) and the slot (33) comprises a guide surface, and the guide surface is configured to generate a guide to guide the anti-rotation buckle (51) to disengage from the slot (33) when the first connecting member (10) and the second connecting member (30) rotate relative to each other around the first axis; The locking member (53) has a locking position and an unlocking position which are 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 rotation of the anti-rotation buckle (51) 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 locking slot (33) along the locking direction; when the locking member (53) is in the locking position, it abuts against the back side of the anti-rotation buckle (51) in the locking direction.

3. The connection structure according to claim 2, characterized in that: The first connecting member (10) has a locking groove (131), the extension direction of the locking groove (131) intersects with the horizontal direction, and extends to the back side of the anti-rotation buckle (51) in the insertion direction, and the locking member (53) is arranged 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 connecting member (10) can be threadedly connected to the second connecting member (30) by rotating relative to the second connecting member (30) along a first rotation direction; the first connecting member (10) can also be threadedly separated from the second connecting member (30) by rotating relative to the second connecting member (30) along a second rotation direction; the anti-rotation buckle (51) is snapped into the snap-in groove (33) along a snap-in direction; The anti-rotation buckle (51) has a first guide surface (511) and a second guide surface (513), the first guide surface (511) and the second guide surface (513) both intersecting with the insertion direction, the first guide surface (511) being configured to guide the anti-rotation buckle (51) to disengage from the locking groove (33) when the first connecting member (10) rotates relative to the second connecting member (30) along the first direction, and the second guide surface (513) being configured to guide the anti-rotation buckle (51) to disengage from the locking groove (33) when the first connecting member (10) rotates relative to the second connecting member (30) along the second direction; and / or, the slot (33) has a third guide surface (331) and a fourth guide surface (333), the third guide surface (331) and the fourth guide surface (333) both intersect with the insertion direction, the third guide surface (331) is configured to guide the anti-rotation buckle (51) to disengage from the slot (33) when the first connecting member (10) rotates relative to the second connecting member (30) along the first direction, and the fourth guide surface (333) is configured to guide the anti-rotation buckle (51) to disengage from the slot (33) when the first connecting member (10) rotates relative to the second connecting member (30) along the second direction.

5. The connection structure according to claim 1, characterized in that: The anti-rotation buckle (51) comprises a connected connecting arm (515) and a buckle portion (517); the connecting arm (515) is configured to be capable of elastic deformation; the buckle portion (517) is provided on the connecting arm (515) and is capable of being snapped into the slot (33) when the connecting arm (515) is driven.

6. The connection structure according to claim 5, characterized in that: The anti-rotation member (50) further comprises an anti-rotation ring (55), the anti-rotation ring (55) being sleeved on the first connecting member (10) and anti-rotatingly cooperating with the first connecting member (10) in rotation 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 in the movable opening (551).

7. The connection structure according to claim 5, characterized in that: The first connecting member (10) further comprises a buckle groove (133), wherein the buckle groove (133) is located on the back side of the anti-rotation buckle (51) in the buckling direction.

8. The connection structure according to claim 1, characterized in that: The second connecting member (30) has a plurality of the clamping grooves (33), and all the clamping grooves (33) are continuously arranged around the first axis.

9. The connection structure according to claim 1, characterized in that: The first connecting member (10) comprises a threaded joint (13) and an outer tube (15), the anti-rotation buckle (51) being arranged on the outer tube (15); the outer tube (15) is sleeved outside the threaded joint (13) and fixedly connected to the threaded joint (13).

10. A fan, characterized in that: Comprising the connection structure according to any one of claims 1 to 9.

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