Patent Application
20240392804
The present application claims the priority and benefit of Chinese patent application No. 202321286239.0, filed on May 24, 2023. The entirety of Chinese patent application No. 202321286239.0 is hereby incorporated by reference herein and made a part of this specification.
The present application relates to the field of a fan, and, in particular, to a telescopic foldable fan.
An electric fan is usually used for indoor air circulation, cooling and ventilation, and is one of the necessary household appliances in summer. It is widely used in residential, office, hotel, shopping mall, hospital, school and other civil and public buildings.
A vertical electric fan mainly includes a base, a pole, and a fan head. The fan head is connected to the base through a pole, and the height of the fan head is relatively high and adjustable, mainly configured to meet the needs for a larger space. However, the vertical electric fan has a large overall height, which takes up much space and is not easy to store.
In China publication No. CN112727794A, an electric fan is disclosed, which can realize folding and storage. An end of the upright pole is provided with an external thread, and switching between a stretched state and a retracted state can be achieved by connecting a sleeve with the external thread.
However, the method for matching the upright pole with the sleeve thread is relatively complex and inconvenient to use.
In order to improve inconvenient use of a vertical electric fan due to a thread cooperation between an upright pole and a sleeve, the present application provides a telescopic foldable fan.
An telescopic foldable fan provided in the present application adopts the following technical solution:
By adopting the above technical solution, the locking sleeve can be sleeved on an outer circumference of a connection portion between the upright pole and the base during use, so that the upright pole and the base remain relatively fixed, thereby avoiding tilting of the fan head due to relative rotation between the upright pole and the base during use. When not in use, the locking sleeve can be separated from the connection portion between the upright pole and the base to restore the rotation of the upright pole, achieving the folding and storage of the upright pole. Compared to the thread fit, the folding and fixation of the upright pole can be achieved by sliding the locking sleeve, making the operation simpler and more convenient.
In some embodiments, a fixing sleeve is provided between the locking sleeve and the upright pole, the fixing sleeve is fixed on an outer side of the upright pole, and an inner wall of the locking sleeve is configured to be attached to and slidable relative to an outer wall of the fixing sleeve; and
By adopting the above technical solution, the locking sleeve can be fixed by means of the damping force between the elastic piece and the locking sleeve, reducing the occurrence of sliding of the locking sleeve during use to impact on use.
In some embodiments, the inner wall of the locking sleeve is defined with a first limit groove configured to fit with the elastic piece.
In the above technical solution, the elastic piece is used to limit the first limit groove to keep the locking sleeve in a state of being sleeved on the outer circumference of the connection portion between the upright pole and the base.
In some embodiments, the inner wall of the locking sleeve is provided with a second limit groove configured to fit with the elastic piece.
By adopting the above technical solution, the elastic piece is used to limit the second limit groove to keep the locking sleeve in a state of being separated from the connection portion between the upright pole and the base.
In some embodiments, a sliding groove is defined on the outer wall of the fixing sleeve, the sliding groove extends along an axial direction of the fixing sleeve, a sliding block is provided on the inner wall of the locking sleeve, and the sliding block is configured to slide inside the sliding groove along with a sliding of the locking sleeve relative to the fixing sleeve.
By adopting the above technical solution, providing the sliding block and the sliding groove can limit the locking sleeve and prevent it from accidentally detaching from the fixing sleeve.
In some embodiments, the upright pole includes a plurality of first sleeves with successively reduced diameters, the first sleeves are sleeved on one another, one of an outer wall and an inner wall of the first sleeves is defined with a guide groove, the other is provided with a protrusion, the protrusion of one first sleeve is configured to be in sliding fit with the guide groove of an adjacent first sleeve.
In the above technical solution, for use, a plurality of the first sleeves are sequentially stretched out, so that the first sleeves can be fixed relative to each other by means of the damping effect between the guide groove and the protrusion, thereby achieving the support of the upright pole for the fan head. When not in use, a plurality of the first sleeves are sequentially retracted to achieve the retraction of the upright pole, significantly reducing the overall volume of the fan and facilitating storage. Due to the fixation of the first sleeves by the damping force, when in use, only stretching or pressing is required to achieve stretching and retracting of the upright pole, making the operation simpler and faster.
In some embodiments, the first sleeve with the smallest diameter of the upright pole is a first connecting sleeve, and the first connecting sleeve is rotatably connected to the fan head; and
By adopting the above technical solution, the fan head can be rotated to a direction nearly parallel to the base during storage, reducing the overall volume during storage. The fixing sleeve is sleeved on the first sleeve with the maximum diameter, making the sliding distance of the locking sleeve shorter, providing a smaller size of the retracted upright pole and further reducing the storage volume.
In some embodiments, one end of the first sleeve is fixedly sleeved with an auxiliary connecting sleeve, a mating portion is formed on a side wall of the auxiliary connecting sleeve, and the mating portion of one first sleeve is matched with the protrusion or the guide groove on a side wall of an adjacent first sleeve.
By adopting the above technical solution, for use, the relative fixation between the first sleeves is achieved through the damping effect between the auxiliary connecting sleeve and adjacent first sleeves. Providing the auxiliary connecting sleeve increases the thickness of the connection between the first sleeves, thereby improving structural strength and reducing the possibility of deformation of the first sleeves. In addition, when severe wear occurs, the auxiliary connecting sleeve can be replaced separately, reducing consumable materials.
In some embodiments, the locking sleeve has an oblong cross section.
By adopting the above technical solution, the design of oblong cross section of the locking sleeve not only improves the poke-yoke performance during assembling, but further increases the contact area between the locking sleeve and the fan head, improving the support effect on the fan head.
In some embodiments, a support fin is rotatably connected to a curved surface of an outer wall of the locking sleeve, and the support fin is configured to support the fan head when it rotates to a direction parallel to a top surface of the base . . . .
By adopting the above technical solution, during normal use, the supporting fins are attached to the locking sleeve. When the fan is folded and stored, the supporting fins can be rotated and extended outward. The supporting fins can support the fan head, increasing the support area of the locking sleeve on the fan head, and reducing the possibility of wear on the rotating connection portions caused by pressure on the edge of the fan head during the storage process. This is beneficial for protecting the connection between the fan head and the upright pole.
In summary, the present application can achieve at least one of the following beneficial technical effects.
The following is a detailed description of the embodiments of the present application, examples of which are shown in the accompanying drawings, where the same or similar labels throughout represent the same or similar components or components with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only intended to explain the present application and cannot be understood as limiting the present application.
The following is a further detailed explanation of the present application in conjunction with accompanying drawings.
Referring to
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It can be understood that, the motor can be, but not limited to, a flat DC brushless motor.
Referring to
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It can be understood that the accommodating slot 11 can be arranged at top or side of the base 1, and it will not be repeated here in embodiments of the present application.
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Referring to
It can be understood that a number of the sleeves 21 can be two, three, or more, not being specifically limited in the embodiments of the present application.
Referring to
It can be understood that, the guide groove 213 can be defined in both the outer wall of the sleeve 21 and the inner wall of the sleeve 21. Correspondingly, if the guide groove 213 is defined in the outer wall of the sleeve 21, the protrusion 214 is provided at a position corresponding to the guide groove 213 on the inner wall of the sleeve 21. If the guide groove 213 is defined in the inner wall of the sleeve 21, the protrusion 214 is provided at a position corresponding to the guide groove 213 on the outer wall of the sleeve 21, which is not specifically limited in embodiments of the present application.
Referring to
As two adjacent sleeves 21 slide in a direction departing from each other, a distance between the protrusion 214 and the guide groove 213 gradually become smaller until an interference fit is achieved. This allows for a damping effect between the protrusion 214 and the guide groove 213 to keep adjacent sleeves 21 fixed relative to each other. During the use of the fan, a plurality of the sleeves 21 are sequentially stretched and fixed relative to each other by means of the guide groove 213 and the protrusion 214, thereby supporting the fan head 3.
It can be understood that, a depth of the guide groove 213 in the sleeve 21 gradually decreases from one end near sleeve 21 with a smaller diameter to one end near sleeve 21 with a larger diameter, or a height of the protrusion 214 toward a wall of the sleeve 21 gradually decreases from one end near sleeve 21 with a smaller diameter to one end near sleeve 21 with a larger diameter. This is not specifically limited in embodiments of the present application.
For example, the depth of guide groove 213 in the sleeve 21 gradually decreases from the end near sleeve 21 with a smaller diameter to the end near the sleeve 21 with a larger diameter, and the heights of portions of protrusion 214 toward the inner wall of the sleeve 21 remains consistent with each other. Therefore, when two adjacent sleeves 21 slide relative to each other in a direction departing from each other, the distance between the protrusion 214 and a bottom wall of the guide groove 213 will gradually decrease and eventually form an interference fit, so that the two adjacent sleeves 21 are fixed with each other due to damping effect between the protrusion 214 and the guide groove 213.
It can be understood that a number of the guide grooves 213 in each of the sleeves 21 can be one or more, and a number of the protrusions 214 in each of the sleeves 21 can be one or more. This is not specifically limited in embodiments of the present application.
For example, there are a plurality of guide grooves 213 spaced from each other in a circumferential direction in an outer wall of the sleeve 21, and there are a plurality of protrusions 214 spaced in a circumferential direction on the inner wall of the sleeve 21. The number of guide grooves 213 is the same as that of the protrusions 214, and the plurality of guide grooves 213 correspond to the protrusions 214 one by one.
Referring to
It can be understood that, a rotational connection method between the first connecting sleeve 211 and the fan head 3 can be, but not limited to, a rotational connection via a rotating shaft, and a rotational connection method between the second connecting sleeve 212 and the base 1 can be, but not limited to, a rotational connection via a rotating shaft.
Referring to
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In one embodiment, the locking sleeve 4 is sleeved on an outer side of the second connecting sleeve 212 and can slide relative to the second connecting sleeve 212. The locking sleeve 4 is sleeved on an outer circumference of the second connecting sleeve 212 and the second rotating seat 14, so that the second connecting sleeve 212 remains relatively perpendicular to the top surface of the base 1. When folding the upright pole 2, the locking sleeve 4 is slid to be separated from the second rotating seat 14, so that the second connecting sleeve 212 can be rotated.
Referring to
It can be understood that, one end of the fixing sleeve 5 near the base 1 is connected with a rotating member 51, and the second rotating shaft 141 is rotatably passed through the rotating member 51. A rotation of the fixing sleeve 5 and the second connecting sleeve 212 relative to the base 1 can be achieved through a rotation fit between the rotating member 51 and the second rotating shaft 141.
Referring to
It can be understood that the elastic piece 52 can be, but not limited to, integrally formed with the fixing sleeve 5.
It can be understood that, there is a gap between the fixing sleeve 5 and the second connecting sleeve 212 that is configured to allow the elastic piece 52 to deform towards the interior of the fixing sleeve 5. When the locking sleeve 4 is sleeved outside the fixing sleeve 5, the inner wall of the locking sleeve 4 abuts against the elastic piece 52, and the elastic piece 52 bends and deforms towards the interior of the fixing sleeve 5 under the force of the locking sleeve 4. At this time, the locking sleeve 4 abuts against the elastic piece 52, so that the damping force between the locking sleeve 4 and the elastic piece 52 can have a fixing effect on the locking sleeve 4.
It can be understood that, one side of the elastic piece 52 facing the locking sleeve 4 can be, but not limited to, a circular arc face.
Referring to
It can be understood that, the first limit groove 41 can be of a straight line or curved shape, and the second limit groove 42 can be of a straight line or curved shape. This is not specifically limited in embodiments of the present application.
For example, the first limit groove 41 and the second limit groove 42 extend in a straight line shape along an axial direction of the locking sleeve 4, and a length direction of the first limit groove 41 coincides with a length direction of the second limit groove 42. Taking the locking sleeve 4 in a state perpendicular to the top surface of the base 1, the first limit groove 41 is located above the second limit groove 42. As the locking sleeve 4 slides relative to the fixing sleeve 5, the elastic piece 52 will slide into the first limit groove 41 or the second limit groove 42.
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It can be understood that, an extension path of sliding groove 53 is parallel to extension paths of the first limit groove 41 and the second limit groove 42 to ensure that the elastic piece 52 can be accurately switched between the first limit groove 41 and the second limit groove 42.
It can be understood that a number of sliding grooves 53 can be one or more, and a number of sliding blocks 43 can be one or more. This is not specifically limited in embodiments of the present application.
For example, there are a plurality of sliding grooves 53 spaced in a circumferential direction on the outer wall of the fixing sleeve 5, and a plurality of sliding blocks 43 spaced on the inner wall of the locking sleeve 4. The number of sliding groove 53 is the same as the number of sliding blocks 43, and the plurality of sliding groove 53 correspond to the plurality of sliding blocks 43 one by one.
Referring to
It can be understood that, when there is a guide groove 213 on the outer wall of the sleeve 21, the mating portion 221 is a recess-like structure formed by inward depression of the outer wall of the auxiliary connecting sleeve 22, whereby the mating portion 221 is matched with the protrusion 214 on the inner wall of an adjacent sleeve 21. When there is a protrusion 214 on the outer wall of the sleeve 21, the mating portion 221 is a protruded structure formed on the outer wall of auxiliary connecting sleeve 22, whereby the mating portion 221 is matched with the guide groove 213 on the inner wall of adjacent sleeve 21. This is not specifically limited in embodiments of the present application.
For example, the outer wall of the sleeve 21 is defined with a guide groove 213, and the mating portion 221 is a recess-like structure formed by inwardly concaving of an outer wall of the auxiliary connecting sleeve 22. The mating portion 221 is matched with the protrusion 214 on the inner wall of an adjacent sleeve 21. As two adjacent sleeves 21 slide in opposite directions departing from each other, contact between the mating portion 221 and the protrusion 214 on the inner wall of an adjacent sleeves 21 will gradually become tight until there is an interference fit. Therefore, the two adjacent sleeves 21 can be fixed to each other via damping effect between the mating portion 221 and the protrusion 214.
It can be understood that, a number of mating portions 221 is the same as a number of guide grooves 213 or protrusions 214 on the sleeve 21, and the mating portions 221 correspond to the guide grooves 213 or protrusions 214 one by one.
Referring to
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It can be understood that, rotational connection between the support fin 44 and the locking sleeve 4 can be, but not limited to, hinging connection.
It can be understood that, during normal use of the fan, the support fin 44 is attached to the locking sleeve 4, and the support fin 44 is integrated with the locking sleeve 4. The outer wall of the support fin 44 and the outer wall of the locking sleeve 4 form a continuous curved surface. For folding and storing the fan, the support fins 44 can be rotated to be expanded relative to the locking sleeve 4. A top of the support fins 44 can abut against the fan head 3 to support the fan head 3.
In an embodiment of the present application, the fixation of the upright pole 2 is achieved by means of the damping effect between the sleeves 21. Compared to a thread connection method, the stretching and retracting of the upright pole 2 can be achieved by only stretching or pressing during use, which is simpler and faster. For storage, the fan head 3 and the retracted upright pole 2 can be rotated to a direction nearly parallel to the base 1, reducing the overall volume during storage and making it easy to store. In addition, in an embodiment of the present application, the rotating connection structure between the upright pole 2 and the base 1 is located on the surface of the base 1, and the surface of the base 1 is overall flat, resulting in a more coordinated visual effect of the overall appearance.
The above are preferred embodiments of the present application and do not limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be covered within the scope of protection of the present application.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202321286239.0 | May 2023 | CN | national |
