Telescopic folding fan

Abstract

To provide a retractable folding fan. The fan includes a base 1, a support rod 2, and a fan head 3. The base includes a seat 11 and a first connecting member 12 provided on the seat, and the first connecting member is provided with a limit groove. The support rod includes a telescopic rod 21 and a second connecting member 22 provided at one end of the telescopic rod along the extension direction of the rod body. The second connecting member is rotatably connected to the first connecting member, and a limit protrusion is provided on the second connecting member. The fan head is provided with a telescopic rod at a position far from the second connecting member. The telescopic folding fan 100 has a storage state, a folded state, and an unfolded state, and in the storage state, the telescopic rod is retractable to move the fan head toward the base, and in the folded state, the telescopic rod rotates the fan head relative to the base by a second connecting member rotatably connected to the first connecting member to move it toward the base, and in the unfolded state, the limiting protrusion is positioned within the limiting groove. The purpose of this invention is to effectively simplify the storage and unfolding method of the telescopic folding fan while ensuring stability and effectively improving usability.

Description

[Technical Field]

[0001] The present invention relates to the technical field of electric fans, and in particular to telescopic folding fans. [Background technology]

[0002] Although floor fans have strong wind power, they are generally large in structure and size. Therefore, some floor fans are foldable or extendable so that they can be stored when not in use and take up less space. Conventional foldable floor fans require movable parts, such as the stand pole of the floor fan, to be locked between the folded state and the use state to ensure stability. This is usually achieved by tightening screws or locking with a locking mechanism. However, both of these methods require the user to operate the locking or unlocking mechanism separately before storing the stand pole or other parts when unfolding or storing the fan, which is inconvenient for daily use. Summary of the Invention [Problem to be solved by the invention]

[0003] The purpose of this invention is to provide a telescopic folding fan that effectively simplifies the storage and deployment method of the telescopic folding fan while ensuring stability, and effectively improves usability. [Means for solving the problem]

[0004] In order to achieve the above object, the present invention provides a telescopic folding fan, which comprises: a base including a seat and a first connecting member, the first connecting member being provided on the seat and the first connecting member being provided with a limit groove; a support rod including an extensible rod and a second connecting member, the second connecting member being provided at one end of the extensible rod along the extending direction of the rod body, the second connecting member being rotatably connected to the first connecting member, and the second connecting member being provided with a limit protrusion; a fan head portion rotatably provided at one end of the telescopic rod farther from the second connecting member, Here, the telescopic folding fan has a stored state, a folded state, and an unfolded state, and in the stored state, the telescopic rod is retractable and allows the fan head to move closer to the base, and in the folded state, the support rod rotates the fan head relative to the base by the second connecting member rotatably connected to the first connecting member and allows it to move closer to the base, and in the unfolded state, the limit protrusion is positioned so as to be restricted by the limit groove.

[0005] In one embodiment, the second connecting member is further provided with an escape groove and an elastic protrusion provided in the escape groove, the elastic protrusion includes a connected elastic arm and an abutment block, and one end of the elastic arm away from the side connected to the abutment block is connected to a groove wall of the escape groove, In the deployed state, the position of the contact block is limited by the limit groove.

[0006] In one embodiment, the limit groove includes a first groove and a second groove, and a groove depth of the first groove is greater than a groove depth of the second groove; In the deployed state, the elastic convex portion is positionally restricted by the first groove, and the limit convex portion is positionally restricted by the second groove.

[0007] In one embodiment, in the deployed state, the telescopic rod extends along a vertical direction to move the fan head away from the base, and the first connecting member is rotatably mounted on the base around an axis that is the extension direction of the rod body of the telescopic rod; and / or The extending direction of the groove body of the limit groove is the same as the extending direction of the rod body of the telescopic rod in the unfolded state.

[0008] In one embodiment, a rotation groove is provided in the first connecting member, and the limit groove is provided in a groove wall of the rotation groove, The second connection part includes a connected pivot head and an inner sleeve, an internal cavity is formed in the inner sleeve, one end of the telescopic rod enters the internal cavity and is connected to the inner sleeve, the pivot head enters the pivot groove and is rotatably connected to the first connection member, and the limit protrusion is provided on the pivot head.

[0009] In one embodiment, a ring groove is provided on the side of the rotating head facing the limit groove, and the ring groove is provided in an annular shape around an axis about which the rotating head rotates relative to the first connecting member, The telescopic folding fan further includes a damping silicone rubber disposed in the ring groove.

[0010] In one embodiment, the telescopic folding fan further includes an outer sleeve, the outer sleeve forms a sliding cavity, and the first connecting member and the second connecting member can enter the sliding cavity, such that the outer sleeve can slide relative to the first connecting member and the second connecting member; In the stored state and the deployed state, the outer sleeve is fitted onto an outer wall of the first connecting member and an outer wall of the second connecting member, In the folded state, the outer sleeve is fitted onto the outer wall of the second connecting member.

[0011] In one embodiment, the first connecting member includes a connecting head and a stopper connected to each other, the stopper is annular and is arranged to surround the connecting head, a movable gap is formed between the stopper and the base, and the connecting head and the stopper surround and form a sinking groove; A limit flange is provided on one end of the outer sleeve facing the base, and in the deployed state, the one end of the outer sleeve enters the sinking groove and the limit flange abuts against the stopper.

[0012] In one embodiment, the base comprises: a base shell provided with mounting holes; a connection holder that is screwed to the base shell and has a rotation hole that corresponds to the mounting hole; a ball bearing provided in the rotary hole, the outer ring of which abuts against a hole wall of the rotary hole, and the inner ring of which is connected to one end of the connecting head; Here, the connection holder forms an installation space with the upper shell, the installation space communicates with the installation hole and the rotation hole, a part of the connection head is rotatably arranged in the installation space, and another part of the connection head is drilled in the installation hole and rotatably connected to the second connection member.

[0013] In one embodiment, the base further includes a gear group, the gear group being provided in the base shell, and the gear group including a motor; a drive gear provided on an output shaft of the motor; a driven gear rotatably mounted on the base shell, meshing with and connected to the drive gear, the rotation axis of which overlaps with the axis of the rotation hole, and threadedly connected to the connection head; and / or The connection holder is further provided with a rotation groove communicating with the mounting space, the first connection member further includes a rotation disc, the rotation disc is connected to the connection head and the stopper, and the rotation disc is rotatably mounted in the rotation groove, and / or The base is further provided with a first sleeve, the connection holder is provided with a second sleeve, and the base shell is provided with a positioning pillar, which is drilled inside the first sleeve and the second sleeve. [Effects of the Invention]

[0014] The telescopic folding fan of the present invention includes a base, a support rod, and a fan head. The base includes a seat and a first connecting member, the first connecting member is rotatably mounted on the seat and has a limit groove. The support rod includes a telescopic rod and a second connecting member, the second connecting member is mounted on one end of the telescopic rod along the extension direction of the rod body, the second connecting member is rotatably connected to the first connecting member, and has a limit protrusion. The fan head is rotatably mounted on one end of the telescopic rod far from the second connecting member. The telescopic folding fan has a stored state, a folded state, and an unfolded state. In the stored state, the telescopic rod is retractable and moves the fan head toward the base. In the folded state, the telescopic rod rotates the fan head relative to the base by a second connecting member rotatably connected to the first connecting member, moving it closer to the base. In the unfolded state, the limiting protrusion is positioned within the limiting groove. When transitioning from the folded state to the unfolded state or from the unfolded state to the folded state, the pivotal connection between the first connecting member and the second connecting member directly rotates the telescopic rod, i.e., the telescopic folding fan can be switched between the folded state and the unfolded state. In addition, in the unfolded state, the limit protrusion is located within the limit groove to limit the position of the telescopic rod and the fan head, thereby fixing the position of the support rod relative to the base, and in the folded state, the limit protrusion is released from the limit groove to store the support rod and the fan head. In this way, the stability of the position of the support rod and the fan head 3 relative to the base 1 is ensured, while the storage and unfolding process of the support rod and the fan head is simplified, improving usability for the user. [Brief explanation of the drawings]

[0015] In order to more clearly describe the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. It is obvious that the accompanying drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other accompanying drawings based on the structures shown in these accompanying drawings without any creative efforts.

[0016] [Figure 1] 1 is a schematic diagram of the unfolded state of a retractable folding fan according to an embodiment of the present invention; [Figure 2] 1 is a schematic exploded view of a telescopic folding fan according to one embodiment of the present invention; [Figure 3] 1 is a schematic diagram of a retractable folding fan in a storage state according to an embodiment of the present invention; [Figure 4] 1 is a schematic diagram of a retractable folding fan in a folded state according to an embodiment of the present invention; [Figure 5] 3 is a schematic diagram of a connection structure between a base and an outer sleeve in one embodiment of the present invention; [Figure 6] FIG. 6 is a local enlarged view of a portion A in FIG. 5. [Figure 7] 1 is a schematic exploded view of a base according to an embodiment of the present invention; [Figure 8] 1 is a schematic diagram of a first connecting member according to an embodiment of the present invention; [Figure 9] 2 is a partial cross-sectional view of a first connecting member according to an embodiment of the present invention; [Figure 10] FIG. 10 is a local enlarged view of a portion B in FIG. 9. [Figure 11] 3 is a schematic diagram of a second connecting member according to an embodiment of the present invention; [Figure 12] 2 is a schematic cross-sectional view of a first connecting member and a second connecting member according to an embodiment of the present invention;

[0017] The realization of the objects, functional features and advantages of the present invention will be further explained in conjunction with the embodiments with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE INVENTION

[0018] The following clearly and completely describes the technical solutions in the embodiments of the present invention, in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without any creative efforts are within the scope of protection of the present invention.

[0019] In addition, when directional instructions (e.g., up, down, left, right, front, back, etc.) are used in the embodiments of the present invention, the directional instructions are only used to explain the relative positional relationships and movement of each part in a specific posture, and when the specific posture changes, the directional instructions also change accordingly.

[0020] Furthermore, when the embodiments of the present invention contain descriptions such as "first" and "second," such descriptions are used solely for describing purposes and should not be understood as indicating or suggesting the relative importance of the features or implicitly indicating the number of the technical features indicated. Accordingly, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. Furthermore, the meaning of "and / or" in the entire sentence includes three parallel means. For example, "A and / or B" includes means A, means B, or means where both A and B are satisfied simultaneously. Furthermore, the technical solutions in each embodiment may be combined with each other, but this must be based on what a person skilled in the art can achieve. If a combination of technical solutions is inconsistent or impossible to achieve, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by the present invention.

[0021] To achieve the above object, referring to the configurations shown in Figures 1 to 4 and 8 to 12, the present invention provides a telescopic folding fan 100, which includes a base 1, a support rod 2, and a fan head 3, the base 1 includes a seat 11 and a first connecting member 12, the first connecting member 12 is mounted on the seat 11, and the first connecting member is provided with a limit groove 1212, the support rod 2 includes a telescopic rod 21 and a second connecting member 22, the second connecting member 22 is mounted at one end of the telescopic rod 21 along the extending direction of the rod body, the second connecting member 22 is rotatably connected to the first connecting member 12, and the second connecting member 22 is provided with a limit protrusion 2211, and the fan head 3 is connected to the first end of the telescopic rod 21. The support rod 2 is rotatably mounted at one end far from the connecting member 22, whereby the support rod 2 can rotate relative to the base 1 by the second connecting member 22 rotatably connected to the first connecting member 12, thereby allowing the telescopic folding fan 100 to have a stored state, a folded state and an unfolded state. In the stored state, the telescopic rod 21 can be stored so that the fan head unit 3 approaches the base 1, and in the folded state, the telescopic rod 21 rotates the fan head unit 3 relative to the base 1 by the second connecting member 22 rotatably connected to the first connecting member 12 so that it approaches the base 1, and in the unfolded state, the limit protrusion 2211 is positioned so that it is limited by the limit groove 1212.

[0022] In this embodiment, the telescopic folding fan 100 is telescopic and foldable so as to store the fan and reduce its occupied space. The telescopic folding fan 100 can be telescopically extended and retracted using a telescopic pipe, telescopic slide rail, connecting rod, etc. to reach the stored state, and can be folded by rotating, bending, limiting, etc. to reach the folded state, but is not limited thereto. The telescopic folding fan 100 includes a base 1, a support rod 2, and a fan head 3. The base 1 is a structural support component of the telescopic folding fan 100. The base 1 is placed on the ground, and the support rod 2 is attached to the base 1. The base 1 may be a base frame, a connecting sheet, a mounting base, or other structure.

[0023] In this embodiment, as shown in Figures 1 to 4, the support rod 2 has a rod-like, columnar, or rod-like structure, one end of the support rod 2 is connected to the base 1, and the other end of the support rod 2 is used to connect and attach the fan head unit 3, thereby supporting the fan head unit 3 and allowing the fan head unit 3 to maintain a certain distance from the ground and blow air within a space at a certain height.Furthermore, the fan head unit 3 is rotatably connected to the support rod 2, and can, for example, rotate up and down around a fixed axis, or swing and rotate left and right around a fixed axis.

[0024] In this embodiment, as shown in Figures 1 to 7, the base 1 includes a base 11 and a first connecting member 12, where the base 11 is placed on the ground, the first connecting member 12 is rotatably mounted on the base 11, and the first connecting member 12 rotates around a straight line perpendicular to the ground relative to the base 11; for example, a rotation axis is provided on the base 11, a rotation hole is provided in the first connecting member 12, and a bearing is provided in the rotation hole, and the first connecting member 12 is rotatably mounted on the base 11 by cooperation of the rotation axis and the bearing. The support rod 2 includes an extendable rod 21 and a second connecting member 22, the extendable rod 21 being connected to the second connecting member 22, and the second connecting member 22 being provided at one end of the extendable rod 21 along the extension direction of the rod body, the extendable rod 21 having an extendable structure formed by sequentially inserting a plurality of extendable joints of different diameters, the fan head unit 3 being provided at one end of the extendable rod 21 farther from the second connecting member 22, the distance of the fan head unit 3 to the base 11 being changed by the extension and contraction of the extendable rod 21 itself, and the air blowing height of the fan head unit 3 being changed.

[0025] At the same time, the first connecting member 12 is provided with a limit groove 1212, and the second connecting member 22 is provided with a limit protrusion 2211 corresponding to the limit groove 1212. After the first connecting member 12 is rotatably connected to the second connecting member 22, the limit protrusion 2211 can enter or leave the limit groove 1212, thereby connecting the telescopic rod 21 to the base 11 so as to be limited in position, or releasing the position-limited connection from the base 11. Specifically, the telescopic rod 21 is rotatably connected to the first connecting member 12 via the second connecting member 22, so that the telescopic rod 21 rotates the fan head 3 to move closer to or away from the base 11. When the telescopic rod 21 moves the fan head 3 closer to the base 11, the telescopic folding fan 100 is in a stored state, and the telescopic rod 21 moves the fan head 3 to move closer to the base 11. When the fan head 3 is moved away from the base 11, the telescopic folding fan 100 is in an unfolded state, and at the same time, the telescopic rod 21 rotates the fan head 3 relative to the base 1 by the second connecting member 22 rotatably connected to the first connecting member 12, allowing the fan head 3 to approach the base 1, thereby placing the telescopic folding fan 100 in a folded state, and the telescopic rod 21 rotates the fan head 3 away from the base 1 by the second connecting member 22 rotatably connected to the first connecting member 12, thereby placing the telescopic folding fan 100 in an unfolded state, and in the unfolded state, the limit protrusion 2211 is restricted in position within the limit groove 1212, thereby fixing the relative positions of the first connecting member 12 and the second connecting member 22, and also fixing the positions of the telescopic rod 21 and the fan head 3 relative to the base 11.

[0026] It is understood that the limit protrusion 2211 may be a limit strip, a limit block, or a limit plate. By providing the limit protrusion 2211 and the limit groove 1212, the limit protrusion 2211 can be directly inserted into or removed from the limit groove 1212 while the telescopic rod 21 is rotated, thereby ensuring the positioning of the telescopic rod 21 and the fan head 3 immediately after rotation and eliminating the need to use structures such as positioning pins, locks, or screws to position the telescopic rod 21 and the fan head 3. This effectively simplifies the storage and deployment method of the telescopic folding fan 100 and effectively improves usability. Furthermore, when the limit protrusion 2211 and the limit groove 1212 are fitted together, they provide support for the telescopic rod 21 and the fan head 3, preventing them from tilting and falling over.

[0027] The telescopic folding fan 100 of the present invention includes a base 1, a support rod 2, and a fan head 3. The base 1 includes a seat 11 and a first connecting member 12. The first connecting member 12 is rotatably mounted on the seat 11 and has a limit groove 1212. The support rod 2 includes a telescopic rod 21 and a second connecting member 22. The second connecting member 22 is mounted on one end of the telescopic rod 21 along the extension direction of the rod body, and the second connecting member 22 is rotatably connected to the first connecting member 12 and has a limit protrusion 2211. The fan head 3 is rotatably mounted on one end of the telescopic rod 21 remote from the second connecting member 22. The telescopic folding fan 100 has a stored state, a folded state, and an unfolded state. In the stored state, the telescopic rod 21 is retractable and allows the fan head unit 3 to move closer to the base 1. In the folded state, the telescopic rod 21 rotates the fan head unit 3 relative to the base 1 by means of the second connecting member 22 rotatably connected to the first connecting member 12, allowing the fan head unit 3 to move closer to the base 1. In the unfolded state, the limit protrusion 2211 is positioned so as to be restricted by the limit groove 1212. When transitioning from the folded state to the unfolded state, or from the unfolded state to the folded state, the first connecting member 12 and the second connecting member 22 are pivotally connected so that the telescopic rod 21 is directly rotated, thereby switching the telescopic folding fan 100 between the folded state and the unfolded state. In the unfolded state, the limit protrusion 2211 is located within the limit groove 1212 to limit the position of the telescopic rod 21 and the fan head 3, thereby fixing the position of the support rod 2 relative to the base 1. In the folded state, the limit protrusion 2211 disengages from the limit groove 1212 to store the support rod 2 and the fan head 3. In this way, the stability of the position of the support rod 2 and the fan head 3 relative to the base 1 is ensured, and the processes of storing and unfolding the support rod 2 and the fan head 3 are simplified, improving user convenience.

[0028] In one embodiment, as shown in Figures 8 to 12, the second connecting member 22 further includes an escape groove 2212 and an elastic protrusion 2213 provided in the escape groove 2212, and the elastic protrusion 2213 includes a connected elastic arm 2214 and a contact block 2215, and one end of the elastic arm 2214 away from the side connected to the contact block 2215 is connected to the groove wall of the escape groove 2212, and in the deployed state, the position of the contact block 2215 is restricted by the limit groove 1212.

[0029] In this embodiment, undercut grooves 2212 are provided on the side of the second connecting member 22 facing the first connecting member 12, and some of the undercut grooves 2212 and limit grooves 1212 are provided opposite each other, and in the second connecting member 22, the undercut grooves 2212 are provided with elastic protrusions 2213, which include a fixed end and a free end, and the fixed end is connected to a groove wall of the undercut groove 2212, and the free end is movable relative to the fixed end and can enter and leave the limit groove 1212. Specifically, the elastic protrusions 2213 include an elastic arm 2214 and an abutment block 2215 connected thereto, and the elastic arm 2214 and the abutment block 2215 may be fixedly connected or detachably connected, but this is not limited thereto. Here, one end of the elastic arm 2214 is connected to the groove wall of the escape groove 2212, i.e., the fixed end, and the other end of the elastic arm 2214 is connected to the abutment block 2215, i.e., the free end, so that when the abutment block 2215 comes into contact with an external structure, the force received by the elastic arm 2214 itself causes the position of the abutment block 2215 to change, and the elasticity of the elastic protrusion 2213 to change.

[0030] As can be understood, the elastic convex portion 2213 and the limit convex portion 2211 are both provided on the side of the second connecting member 22 facing the first connecting member 12, and in the process of rotating the telescopic rod 21 relative to the base 11, the elastic convex portion 2213 and the limit convex portion 2211 both rotate relative to the first connecting member 12, and further, in the unfolded state, when the limit convex portion 2211 is restricted in position by the limit groove 1212, the abutment block 2215 is also restricted in position by the limit groove 1212.

[0031] As can be seen, when transitioning from the folded state to the unfolded state, the limit protrusion 2211 can directly enter or leave the limit groove 1212, while the contact head of the elastic protrusion 2213 can change its position relative to the limit groove 1212, such that it enters or leaves the limit groove 1212 under the elastic deformation action of the elastic arm 2214. That is, the elastic protrusion 2213 and the limit protrusion 2211 have different position limiting methods and principles relative to the limit groove 1212. Furthermore, when the position of the limit protrusion 2211 is directly limited by the limit groove 1212, the provision of the elastic protrusion 2213 allows the abutment block 2215 to be tightly abutted against the groove wall of the limit groove 1212 under the action of the elastic arm 2214, thereby improving the connection stability between the first connecting member 12 and the second connecting member 22 in the unfolded state. Furthermore, when the limit protrusion 2211 and the elastic protrusion 2213 are fitted into the limit groove 1212, a supporting force is provided for the telescopic rod 21 and the fan head 3, preventing the telescopic rod 21 and the fan head 3 from tilting and falling over.

[0032] At the same time, based on the above embodiment, the telescopic folding fan 100 further includes an outer sleeve 4, which is slidable relative to the first connecting member 12 and the second connecting member 22, and in the stored state and the unfolded state, the outer sleeve 4 is fitted onto the outer wall of the first connecting member 12 and the outer wall of the second connecting member 22, and in the folded state, the outer sleeve 4 is fitted onto the outer wall of the second connecting member 22. In the stored state and the deployed state, the outer sleeve 4 can be fitted onto the outer walls of the first connecting member 12 and the second connecting member 22, thereby providing the main support for the telescopic rod 21 and the fan head 3; at the same time, the limit protrusions 2211 and the elastic protrusions 2213 provide auxiliary support. The cooperation of the outer sleeve 4 with the limit protrusions 2211 and the elastic protrusions 2213 effectively improves the connection strength between the first connecting member 12 and the second connecting member 22, and prevents the telescopic rod 21 and the fan head 3 from tilting and falling relative to the base 11.

[0033] In one embodiment, as shown in Figures 10 and 12, the limit groove 1212 includes a first groove 1213 and a second groove 1214, and the groove depth of the first groove 1213 is deeper than the groove depth of the second groove 1214, and in the unfolded state, the elastic convex portion 2213 is restricted in position by the first groove 1213, and the limit convex portion 2211 is restricted in position by the second groove 1214.

[0034] In this embodiment, the limit groove 1212 includes a first groove 1213 and a second groove 1214, and the first groove 1213 and the second groove 1214 may or may not be connected to each other. The first groove 1213 and the second groove 1214 are spaced apart along a straight line or connected to each other. Preferably, the line connecting the first groove 1213 and the second groove 1214 passes through the rotation center of the first connecting member 12 and the second connecting member 22. As a result, when the second connecting member 22 rotates relative to the first connecting member 12, the limit protrusion 2211 and the elastic protrusion 2213 can enter the limit groove 1213 sequentially or synchronously, and the elastic protrusion 2213 is restricted in position by the first groove 1213, and the limit protrusion 2211 is restricted in position by the second groove 1214.

[0035] As can be seen, by installing the first groove 1213 and the second groove 1214, the positions of the elastic convex portion 2213 and the limit convex portion 2211 are limited, and the groove depth of the first groove 1213 must be deeper than the groove depth of the second groove 1214. As a result, the abutment block 2215 is closer to the first connecting member 12 than the limit convex portion 2211, and a larger portion of the abutment block 2215 enters into the limit groove 1212 than the limit convex portion 2211. On the other hand, since the elastic arm 2214 itself can be elastically deformed, the groove depth of the first groove 1213 is deeper, and the abutment block 2215 can enter into the first groove 1213 of the limit groove 1212 more easily than the limit convex portion 2211. At the same time, the abutment force between the elastic convex portion 2213 and the first groove 1213 can be increased, thereby improving the connection robustness between the telescopic rod 21 and the base 11 in the unfolded state.

[0036] In one embodiment, as shown in Figures 1 and 2, in the unfolded state, the telescopic rod 21 extends vertically to move the fan head 3 away from the base 11, and the first connecting member 12 is rotatably mounted on the base 11 with the extension direction of the rod body of the telescopic rod 21 as its axis.

[0037] As can be seen, in the unfolded state, the telescopic rod 21 extends vertically, and the telescopic rod 21 and the fan head 3 can rotate relative to the base 11 via the second connecting member 22 and the first connecting member 12, around an axis that is the extension direction of the rod body of the telescopic rod 21. At this time, the abutment blocks 2215 of the limit protrusions 2211 and the elastic protrusions 2213 are positioned within the limit grooves 1212 so that the rod body of the telescopic rod 21 extends vertically. At the same time, the arrangement direction of the first groove 1213 and the second groove 1214 in the limit groove 1212 is also the same as the extension direction of the rod body of the telescopic rod 21. Therefore, when the limit protrusion 2211 is positioned within the first groove 1214 and the elastic protrusion 2213 is positioned within the second groove 1214, the telescopic rod 21 can extend vertically to support the fan head 3.

[0038] In one embodiment, the direction of the rotation axis of the first connecting member 12 and the second connecting member 22 is perpendicular to the vertical direction, and as can be understood, by rotating the first connecting member 12 and the second connecting member 22, the rotation of the telescopic rod 21 relative to the base 11 can be achieved, and the rotation of the telescopic rod 21 relative to the base 11 moves along a direction toward or away from the base 11, i.e., rotates along a direction perpendicular to the vertical direction.

[0039] Optionally, the extending direction of the groove body of the limit groove 1212 is the same as the extending direction of the rod body of the telescopic rod 21 in the deployed state.

[0040] In one embodiment, as shown in Figures 6, 8 to 12, a rotation groove 1211 is provided in the first connecting member 12, and a limit groove 1212 is provided in the groove wall of the rotation groove 1211, the second connecting part 22 includes a connected rotation head 221 and an inner sleeve 222, an internal cavity 2221 is formed in the inner sleeve 222, one end of the telescopic rod 21 enters the internal cavity 2221 and is connected to the inner sleeve 222, the rotation head 221 enters the rotation groove 1211 and is rotatably connected to the first connecting part 12, and the limit protrusion 2211 is provided on the rotation head 221.

[0041] In this embodiment, a rotation groove 1211 is provided in the first connecting member 12, and the groove opening of the rotation groove 1211 is provided toward the second connecting member 22 and the telescopic rod, and limit grooves 1212 are provided in the groove walls on both opposing sides of the rotation groove 1211, the rotation head 221 of the second connecting member 22 is inserted into the rotation groove 1211 and is rotatably connected to the first connecting member 12, and the inner sleeve 222 is connected to the rotation head 221 and is located at one end away from the side where the rotation head 221 enters the rotation groove 1211.

[0042] Specifically, the rotating head 221 has two mounting side walls 221a, which are arranged back to back with each other, and each mounting side wall 221a faces the groove wall of the rotating groove 1211 and is arranged parallel to the groove wall of the rotating groove 1211. At the same time, the rotating head 221 has a first rotating hole penetrating the two mounting side walls 221a, and the first connecting member 12 has a second rotating hole communicating with the rotating groove 1211. The base 1 further includes a shaft rod, and the rotating head 2 After 21 enters the rotation groove 1211, a shaft is drilled sequentially into the first rotation hole and the second rotation hole, thereby allowing the first connecting member 12 and the second connecting member 22 to rotate relatively. At the same time, each mounting side wall 221a is provided with a limit protrusion 2211 and an escape groove 2212, and an elastic protrusion 2213 is provided in the escape groove 2212. In the unfolded state, the elastic protrusion 2213 and the limit protrusion 2211 on each mounting side wall 221a are located in the limit groove 1212 on the opposite side.

[0043] Furthermore, the inner sleeve 222 has a cylindrical structure, and its peripheral wall surrounds and forms a hollow internal cavity 2221 structure, and one end of the telescopic rod 21 can enter the internal cavity 2221 and be connected to the inner sleeve 222. By accommodating and connecting the telescopic rod 21 through the internal cavity 2221 formed by the inner sleeve 222, the telescopic rod 21 can be rotatably connected to the first connecting member 12 by the pivot head 221, making it easy to rotate and fold the telescopic rod 21 for storage.

[0044] As can be seen, by installing the pivot head 221, it can be better adapted to the groove structure of the pivot groove 1211, and the pivot head 221 has an arcuate surface at one end away from the end connected to the inner sleeve 222, and this arcuate surface is centered on the rotation axis of the pivot head 221 relative to the first connecting member 12, so that when the pivot head 221 rotates relative to the first connecting member 12, the rotation process becomes smoother, and at the same time, the structure of the telescopic rod 21 can also be adapted to the inner sleeve 222 so as to connect the telescopic rod 21 to the pivot head 221.

[0045] In one embodiment, as shown in Figures 11 and 12, a ring groove 2216 is provided on the side of the rotating head 221 facing the limit groove 1212, and the ring groove 2216 is arranged in a ring shape around the axis about which the rotating head 221 rotates relative to the first connecting member 12, and the telescopic folding fan 100 further includes a damping silicone rubber, which is provided in the ring groove 2216.

[0046] In this embodiment, the mounting side wall 221a is provided with a ring groove 2216, which is annularly arranged around the rotation axis of the rotating head 221 relative to the first connecting member 12, i.e., the ring groove 2216 is annularly arranged around the first rotating hole. The ring groove 2216 has a groove structure with a certain width, and the groove opening of the ring groove 2216 faces the limit groove 1212. The retractable folding fan 100 further includes a damping silicone rubber, which is arranged in the ring groove 2216. The damping silicone rubber is also arranged in part of the damping silicone rubber. The rubber cone extends beyond the opening of the ring groove 2216 so as to abut against the wall of the rotation groove 1211, so that when the rotation head 221 rotates relative to the first connecting member, the damping silicone rubber can provide resistance to the rotation head 221, ensuring stability when the telescopic rod 21 and the second connecting member 22 rotate relative to the first connecting member 12, and making the damping effect during the rotation process more linear, thereby preventing the telescopic rod 21 and the fan head 3 from rotating uncontrollably over a wide range relative to the first connecting member 12.

[0047] In one embodiment, as shown in Figures 2 to 6, the telescopic folding fan 100 further includes an outer sleeve 4, wherein the outer sleeve 4 forms a sliding cavity, and the first connecting member 12 and the second connecting member 22 can enter the sliding cavity so that the outer sleeve 4 can slide relative to the first connecting member 12 and the second connecting member 22. In the stored state and the unfolded state, the outer sleeve 4 is fitted onto the outer wall of the first connecting member 12 and the outer wall of the second connecting member 22, and in the folded state, the outer sleeve 4 is fitted onto the outer wall of the second connecting member 22.

[0048] As can be seen, the outer sleeve 4 has a hollow cylindrical structure, and a sliding cavity is formed in the center of the outer sleeve 4. The first connecting member 12 and the second connecting member 22 are inserted into the sliding cavity so that the outer sleeve 4 can slide relative to the first connecting member 12 and the second connecting member 22. In the stored state and the deployed state, the outer sleeve 4 keeps the position between the first connecting member 12 and the second connecting member 22 fixed, and the telescopic rod 21 keeps the vertical state so as to prevent the second connecting member 22 from rotating relative to the first connecting member 12. The outer sleeve 4 is fitted onto the outer wall of the inner sleeve 222 of the first connecting member 12 and the second connecting member 22. In the folded state, the outer sleeve 4 can be moved to the inner sleeve 222 of the second connecting member 22 to release the outer sleeve 4 from movable contact with the first connecting member 12, thereby releasing the restriction on the rotation of the first connecting member 12 and the second connecting member 22. At this time, the outer sleeve 4 becomes rotatable relative to the first connecting member 12 together with the telescopic rod 21 and the second connecting member 22. In other words, the outer sleeve 4 has a locking structure and an unlocking structure. By providing the outer sleeve 4, the first connecting member 12 and the second connecting member 22 can be locked, preventing relative rotation and maintaining the unfolded state, or the outer sleeve 4 can be unlocked, making it easy for the second connecting member to rotate relative to the first connecting member to transition from the unfolded state to the folded state.

[0049] In one embodiment, as shown in Figures 5 and 6, the first connecting member 12 includes a connected connecting head 121 and a stopper 122, the stopper 122 is annular and surrounds the connecting head 121, a movable gap 123 is formed between the stopper 122 and the base 11, the connecting head 121 and the stopper 122 surround and form a sinking groove 124, and a limit flange 41 is provided at one end of the outer sleeve 4 facing the base 11, and in the expanded state, one end of the outer sleeve 4 enters the sinking groove 124 and the limit flange 41 abuts against the stopper 122.

[0050] In this embodiment, an attachment hole 1112 is formed in the base 11, and the first connecting member 12 is disposed in the attachment hole 1112. At the same time, the first connecting member 12 includes a connection head 121 and a stopper 122. The stopper 122 and the outer wall of the connection head 121 surround and form a ring-shaped recessed groove 124. The connection head 121 and the stopper 122 are located in the attachment hole 1112, and the stopper 122 is disposed ring-shaped around the axis of the attachment hole 1112. As a result, a movable gap 123 is formed between the stopper 122 and the hole wall of the attachment hole 1112. A limit flange 41 is provided at one end of the outer sleeve 4 facing the base 11. In the unfolded state, one end of the outer sleeve 4 can enter the recessed groove 124, and the limit flange 41 abuts against the upper wall of the stopper 122.

[0051] As can be seen, by providing the limit flange 41 on the outer sleeve 4 and the recessed groove 124 on the first connecting member 12, in the deployed state, the end of the outer sleeve 4 can enter the recessed groove 124 and make the limit flange 41 abut against the stopper 122, thereby ensuring that the outer sleeve 4 is tightly engaged with the first connecting member 12 and fixed to the first connecting member 12, and that the outer sleeve 4 is simultaneously fitted onto the outer walls of the first connecting member 12 and the second connecting member 22; at the same time, due to the movable gap between the stopper 122 and the base 11, when a portion of the outer sleeve 4 enters the recessed groove 124, the pressed stopper 122 can reduce the width of the movable gap, thereby providing more mounting space for the outer sleeve 4, and thereby reducing the wear caused by an overly tight connection between the outer sleeve 4 and the first connecting member 12 when the first connecting member 12 rotates relative to the base 11.

[0052] In one embodiment, as shown in FIG. 7, the base 11 includes a base shell 111, a connection holder 112, and a ball bearing 113, the base 11 forms an installation cavity 1111, the base shell 111 is provided with an installation hole 1112 communicating with the installation cavity 1111, the connection holder 112 is screwed to the base shell 111 and is located in the installation cavity 1111, the connection holder 112 is provided with a rotation hole 1122 corresponding to the installation hole 1112, and the ball bearing 113 is provided with a rotation hole 1122. The connecting head 121 is provided in the rotating hole 1122, and the outer ring of the ball bearing 113 abuts against the hole wall of the rotating hole 1122, and one end of the connecting head 121 is connected to the inner ring of the ball bearing 113, where the connecting holder 112 forms an installation space with the upper shell, and the installation space connects the installation hole 1112 and the rotating hole 1122, and a part of the connecting head 121 is rotatably provided in the installation space, and another part of the connecting head 121 is drilled in the installation hole 1112 and rotatably connected to the second connecting member 22.

[0053] In this embodiment, the connection holder 112 is provided in the mounting cavity 1111, and at the same time, the mounting holder 112 and the base shell 111 are also removably connected by bolts, screws or studs, and the connection holder 112 is provided with a rotation hole 1122, and a ball bearing 113 is provided in the rotation hole 1122, where the outer ring of the ball bearing 113 abuts against the hole wall of the rotation hole 1122 so that the connection head 121 of the first connecting member 12 can rotate relative to the connection holder 112, and the end of the connection head 121 of the first connecting member 12 is connected to the inner ring of the ball bearing 113.

[0054] At the same time, the base shell 111 is further provided with an attachment hole 1112 that communicates with the attachment cavity 1111, and the attachment hole 1112 is arranged opposite the rotation hole 1122 so that the hole axis of the rotation hole 1122 overlaps with the hole axis of the attachment hole 1112. At the same time, the connection holder 112, together with the base shell 111, surrounds and forms an attachment space, and the attachment space communicates with both the rotation hole 1122 and the attachment hole 1112. The first connecting member 12 is located within the attachment space, and the first connecting member 12 is rotatably connected to the connection holder 112 via a ball bearing 113, and the other end of the first connecting member 12 is drilled into the attachment hole 1112 and rotatably connected to the second connecting member 22.

[0055] In one embodiment, as shown in FIG. 7 , the base 11 further includes a gear group 114, which is provided in the base shell 111 and located in the mounting cavity 1111, and which includes a motor 1141, a driving gear 1142, and a driven gear 1143, wherein the driving gear 1142 is provided on the output shaft of the motor 1141, the driven gear 1143 is rotatably provided in the base shell 111, the driven gear 1143 and the driving gear 1142 are meshed and connected, the rotation axis of the driven gear 1143 overlaps with the axis of the rotation hole 1122, and the driven gear 1143 is threadedly connected to the connection head 121. As can be seen, the motor 1141 is used to drive the driving gear 1142 to rotate, and rotates the driven gear 1143 by the meshing connection between the driving gear 1142 and the driven gear 1143, and the rotation axis of the driven gear 1143 overlaps with the axis of the rotation hole 1122, and the driven gear 1143 and the connection head 121 of the first connecting member 12 are detachably connected by means of bolts, screws, studs, etc., so that the first connecting member 12, the support rod 2 connected to the first connecting member 12, and the fan head part 3 rotate together when the motor 1141 is driven.

[0056] Optionally, the connection holder 112 further has a rotating groove 1121 communicating with the mounting space, and the first connection member 12 further includes a rotating disc 125, which is connected to the connection head 121 and the stopper 122, and the rotating disc 125 is rotatably mounted in the rotating groove 1121. As can be seen, a rotation groove 1121 is provided on the side facing the mounting hole 1112 of the connection holder 112, and the rotating disc 125 of the first connecting member 12 is provided in the rotation groove 1121, where a plurality of movable balls are provided on the rotating disc 125, and a raceway is provided on the bottom wall of the rotation groove 1121, so that when the rotating disc 125 rotates relative to the rotation groove 1121, the balls roll in the raceway and cause the rotating head 221 to rotate relative to the connection holder 112, thereby ensuring smooth rotation and firm connection between the first connecting member 12 and the connection holder 112, and ensuring the stability of the telescopic rod 21 and the fan head part 3.

[0057] Optionally, as shown in Figure 7, the base 11 is provided with a first sleeve 111b, the connection holder 112 is provided with a second sleeve 1123, and the base shell 111 is provided with a positioning post 111a, which is drilled into the first sleeve 111b and the second sleeve 1123. It can be seen that the first sleeve 111b and the second sleeve 1123 are both hollow structures, each having a sleeve cavity formed therein, the extension direction of the cavity body of the sleeve cavity being the same as the extension direction of the post body of the positioning post 111a. After the connection holder 112 and the base 11 are connected, the positioning post 111a can penetrate the first sleeve 111b and the second sleeve 1123, thereby ensuring the accuracy of the relative position between the base shell 111 and the connection holder 112 and providing a stronger support for the connection holder 112, preventing the telescopic rod 21 and the fan head 3 from tilting and falling over.

[0058] The above are merely exemplary embodiments of the present invention and do not limit the patent scope of the present invention. The technical concept of the present invention, the equivalent structural transformation made by utilizing the contents of the specification and accompanying drawings of the present invention, or the direct / indirect application to other related technical fields, are all within the patent protection scope of the present invention. [Explanation of symbols]

[0059] 100 Telescopic Folding Fan 1 base 11 Pedestal 111 Pedestal shell 111a Positioning pillar 111b First Sleeve 1111 Mounting cavity 1112 Mounting hole 112 Connection holder 1121 Rotating groove 1122 Rotation hole 1123 Second Sleeve 113 Ball bearing 114 Gears 1141 Motor 1142 Drive gear 1143 Driven gear 12 First connecting member 121 Connection Head 1211 Rotating groove 1212 Limit groove 1213 First groove 1214 2nd groove 122 Stopper 123 Movable gap 124 Subsidence Ditch 125 Rotating Disc 2 support rods 21 Telescopic Rod 22 second connecting member 221 Rotating head 221a Mounting side wall 2211 Limit convex part 2212 Undercut 2213 Elastic convex part 2214 Elastic Arm 2215 Abutment Block 2216 Ring groove 222 Inner sleeve 2221 Internal cavity 3 Fan head 4 outer sleeve 41 Limit flange

Claims

1. A telescopic folding fan, a base including a seat and a first connecting member, the first connecting member being provided on the seat and the first connecting member being provided with a limit groove; a support rod including an extensible rod and a second connecting member, the second connecting member being provided at one end of the extensible rod along the extending direction of the rod body, the second connecting member being rotatably connected to the first connecting member, and the second connecting member being provided with a limit protrusion; a fan head portion rotatably provided at one end of the telescopic rod farther from the second connecting member, Here, the telescopic folding fan has a stored state, a folded state, and an unfolded state, and in the stored state, the telescopic rod is retractable and moves the fan head closer to the base, and in the folded state, the support rod rotates the fan head relative to the base by the second connecting member rotatably connected to the first connecting member and moves it closer to the base, and in the unfolded state, the limit protrusion is arranged to be positionally restricted by the limit groove.

2. the second connecting member is further provided with an escape groove and an elastic protrusion provided in the escape groove, the elastic protrusion including a connected elastic arm and an abutment block, and one end of the elastic arm away from the side connected to the abutment block is connected to a groove wall of the escape groove, The extendable folding fan according to claim 1 , wherein the contact block is restricted in position by the limit groove in the unfolded state.

3. the limit groove includes a first groove and a second groove, and a groove depth of the first groove is greater than a groove depth of the second groove; The extendable folding fan according to claim 2, wherein in the unfolded state, the elastic convex portion is restricted in position by the first groove, and the limit convex portion is restricted in position by the second groove.

4. In the deployed state, the telescopic rod extends in a vertical direction to move the fan head away from the base, and the first connecting member is rotatably mounted on the base around an axis that is the extension direction of the rod body of the telescopic rod, and / or 2. The telescopic folding fan according to claim 1, wherein the extending direction of the groove body of the limit groove is the same as the extending direction of the rod body of the telescopic rod in the unfolded state.

5. The first connecting member is provided with a rotation groove, and the limit groove is provided on a groove wall of the rotation groove, The telescopic folding fan of any one of claims 1 to 4, characterized in that the second connection part includes a connected pivot head and an inner sleeve, an internal cavity is formed in the inner sleeve, one end of the telescopic rod enters the internal cavity and is connected to the inner sleeve, the pivot head enters the pivot groove and is rotatably connected to the first connection part, and the limit protrusion is provided on the pivot head.

6. a ring groove is provided on a side of the rotating head facing the limit groove, and the ring groove is provided in an annular shape around an axis about which the rotating head rotates relative to the first connecting member; 6. The telescopic folding fan of claim 5, further comprising a damping silicone rubber, the damping silicone rubber being disposed in the ring groove.

7. The telescopic folding fan further includes an outer sleeve, the outer sleeve forms a sliding cavity, and the first connecting member and the second connecting member can enter the sliding cavity so that the outer sleeve can slide relative to the first connecting member and the second connecting member; In the stored state and the deployed state, the outer sleeve is fitted onto an outer wall of the first connecting member and an outer wall of the second connecting member, The telescopic folding fan according to any one of claims 1 to 4, characterized in that in the folded state, the outer sleeve is fitted onto the outer wall of the second connecting member.

8. The first connecting member includes a connecting head and a stopper connected to each other, the stopper is annular and is provided to surround the connecting head, a movable gap is formed between the stopper and the base, and the connecting head and the stopper surround and form a sinking groove; The telescopic folding fan of claim 7, characterized in that a limit flange is provided at one end of the outer sleeve facing the base, and in the unfolded state, one end of the outer sleeve enters the sinking groove and the limit flange abuts against the stopper.

9. The base is a base shell provided with mounting holes; a connection holder that is screwed to the base shell and has a rotation hole that corresponds to the mounting hole; a ball bearing provided in the rotary hole, the outer ring of which abuts against a hole wall of the rotary hole, and the inner ring of which is connected to one end of the connection head; Here, the connection holder forms an installation space with the base shell, the installation space communicates with the installation hole and the rotation hole, a part of the connection head is rotatably arranged in the installation space, and another part of the connection head is drilled in the installation hole and rotatably connected to the second connection member, according to claim 8, characterized in that

10. The base further includes a gear group, the gear group being provided in the base shell, and the gear group including a motor; a drive gear provided on an output shaft of the motor; a driven gear rotatably mounted on the base shell, meshing with and connected to the drive gear, the rotation axis of which overlaps with the axis of the rotation hole, and threadedly connected to the connection head; and / or The connection holder is further provided with a rotation groove communicating with the mounting space, the first connection member further includes a rotation disc, the rotation disc is connected to the connection head and the stopper, and the rotation disc is rotatably mounted in the rotation groove, and / or 10. The telescopic folding fan of claim 9, wherein the base further comprises a first sleeve, the connection holder comprises a second sleeve, and the base shell comprises a positioning pillar, the positioning pillar being drilled into the first sleeve and the second sleeve.

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