Detachable tower fan

Abstract

A detachable tower fan comprises a housing, a tower fan blade and a driving assembly. The housing is columnar and has an intake portion, an exhaust portion and an access opening that all communicate with an interior of the housing. The intake portion and the exhaust portion are disposed at lateral walls of the housing. The access opening is on a top part of the housing. The tower fan blade and the driving assembly are respectively disposed in the housing. Contours of the tower fan blade and of the access opening correspond to each other. The tower fan blade is detachably connected to the driving assembly to be driven to rotate. When cleaning the detachable tower fan, the tower fan blade can be easily detached from the driving assembly and withdrawn from the housing through the access opening, thereby increasing cleaning convenience.

Description

BACKGROUND OF THE INVENTION1. Field of the Invention

[0001] The present invention relates to a detachable tower fan, especially to a tower fan having a blade that can be easily withdrawn for cleaning.2. Description of Related Art

[0002] Various types of electric fans are available in the market for household use. One type of the electric fans is a tower fan, which is shaped like a vertical column and occupies less floor area as one of its features.

[0003] The main feature of a tower fan is that it blows linear airflow, different from rotational airflow blown by a normal electric fan. Therefore, the airflow from the tower fan blows for a longer distance, easily forming indoor air circulations. The linear airflow blows like natural wind, and hence makes users feel more comfortable.

[0004] However, tower fans have a lower market share and are not so common because they are hard to clean and their blades are hard to detach, still having room for improvement.SUMMARY OF THE INVENTION

[0005] The present invention provides a detachable tower fan to resolve drawbacks that cleaning a conventional tower fan is hard and inconvenient.

[0006] The detachable tower fan comprises a housing, a tower fan blade, and a driving assembly. The housing is columnar and comprises a containing chamber, an intake portion, an exhaust portion, and an access opening. The containing chamber is columnar and is disposed in the housing. The intake portion communicates with the containing chamber. The exhaust portion communicates with the containing chamber. The access opening communicates with the containing chamber and is disposed at a top part of the housing. The tower fan blade is columnar and disposed in the containing chamber of the housing. A contour of the tower fan blade corresponds to a contour of the access opening. The tower fan blade is able to pass through the access opening of the housing. The driving assembly is mounted in the housing, detachably connects the tower fan blade, and drives the tower fan blade to rotate, such that air is fed into the housing through the intake portion and is discharged from the exhaust portion.

[0007] The detachable tower fan is used to blow airflow. The driving assembly drives the tower fan blade to rotate, so air is fed into the housing through the intake portion of the housing and is discharged from the exhaust portion. The housing has the access opening that communicates with the containing chamber. The tower fan blade and the driving assembly are detachably connected. Therefore, to clean the tower fan blade, a user can withdraw the tower fan blade from the housing through the access opening. The tower fan blade is not electrically connected to other elements, so it can be washed directly with water. Furthermore, after the tower fan blade is withdrawn from the containing chamber, there will be more room for the user to clean the housing. Therefore, convenience of cleaning the detachable tower fan is increased.BRIEF DESCRIPTION OF THE DRAWINGS

[0008] FIG. 1 is a perspective view of an embodiment of a detachable tower fan in accordance with the present invention;

[0009] FIG. 2 is a partially-exploded view of the detachable tower fan shown in FIG. 1;

[0010] FIG. 3 is a front view of the detachable tower fan shown in FIG. 1;

[0011] FIG. 4 is a sectional side view of the detachable tower fan shown in FIG. 1;

[0012] FIG. 5A is a partial sectional side view of a top portion of the detachable tower fan shown in FIG. 1;

[0013] FIG. 5B is an enlarged partial sectional side view of a top portion of the detachable tower fan shown in FIG. 5A;

[0014] FIG. 6 is a partial sectional side view of a bottom portion of the detachable tower fan shown in FIG. 1;

[0015] FIG. 7 is a partial sectional side view of a connecting portion of a tower fan blade and a coupling element of a driving assembly of the detachable tower fan shown in FIG. 1; and

[0016] FIG. 8 is an exploded view of the connecting portion of the tower fan blade and the coupling element of the driving assembly of the detachable tower fan shown in FIG. 1.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0017] With reference to FIGS. 1 to 4, a detachable tower fan of the present disclosure comprises a housing 10, a tower fan blade 20, and a driving assembly 30.

[0018] With reference to FIGS. 4 to 6, the housing 10 is columnar and has a containing chamber 11, which is also columnar. The housing 10 comprises an intake portion 12, an exhaust portion 13, and an access opening 14 that respectively communicate with the containing chamber 11. The intake portion 12 and the exhaust portion 13 are disposed at lateral walls of the housing 10 and are spaced apart from each other. The access opening 14 is located at a top part of the housing 10.

[0019] With reference to FIGS. 2, 4 and 5A, the tower fan blade 20 is columnar and is disposed in the containing chamber 11 of the housing 10. The tower fan blade 20 has multiple blade vanes 21 formed at an outer surface of the tower fan blade. A contour of the tower fan blade 20 corresponds to a contour of the access opening 14. The tower fan blade 20 can pass through the access opening 14 of the housing 10. The multiple blade vanes 21 extend along the tower fan blade 20 lengthwise and are spaced apart from each other. The tower fan blade 20 can be a conventional product to lower costs.

[0020] With reference to FIGS. 4, 6 and 8, the driving assembly 30 is mounted inside and at a lower part of the housing 10, is detachably connected to the tower fan blade 20, and drives the tower fan blade 20 to rotate, so air is fed into the housing 10 through the intake portion 12 and is discharged from the exhaust portion 13.

[0021] With reference to FIGS. 3 and 4, the detachable tower fan is used to blow airflow. The driving assembly 30 drives the tower fan blade 20 to rotate, so air is fed into the housing 10 through the intake portion 12 of the housing 10 and is discharged from the exhaust portion 13.

[0022] With reference to FIGS. 2 to 4, the intake portion 12 of the housing 10 has multiple intake railings 121 spaced apart from each other. The exhaust portion 13 has multiple exhaust railings 131 spaced apart from each other. The multiple intake railings 121 and the multiple exhaust railings 131 are used to prevent users from accidentally touching the tower fan blade 20 in rotation to increase use safety. Besides, the multiple intake railings 121 and the multiple exhaust railings 131 are preferably made from stainless steel bars, which do not need coating or painting, have better visual aesthetic, are unlikely to get rusty, and are easier to clean.

[0023] Additionally, with reference to FIGS. 1 to 4, the detachable tower fan comprises a base 15 mounted below the housing 10, which is a bottom end of the housing 10. The detachable tower fan comprises a controlling assembly 40, comprising multiple controlling buttons 41 and a controlling unit 42. The multiple controlling buttons 41 are mounted at an outside surface of the base 15. The controlling unit 42 is mounted in the base 15 and is electrically connected to the driving assembly 30 and the multiple controlling buttons 41. The multiple controlling buttons 41 are operated to control the driving assembly 30 through the controlling unit 42 and can be used to turn on or off the driving assembly 30, to control the detachable tower fan to blow airflow or stop blowing and turn off.

[0024] In addition, the multiple controlling buttons 41 mounted at the outside surface of the base 15 facilitate users to control the detachable tower fan by stepping on the multiple controlling buttons 41 with their feet, increasing convenience of use. Because the controlling assembly 40 is mounted at the base 15, it is near the driving assembly 30, therefore reducing wiring complexity and error probability.

[0025] Furthermore, with reference to FIGS. 1 and 8, the base 15 has multiple displaying units 151 electrically connected to the controlling assembly 40. The controlling unit 42 has multiple wind-speed modes and multiple time-setting modes. The multiple displaying units 151 show different displaying arrangements respectively corresponding to the multiple wind-speed modes and the multiple time-setting modes. For example, the controlling unit 42 turns on the multiple displaying units 151 in different combinations and different orders to show different displaying arrangements. The controlling unit 42 controls the driving assembly 30 to drive the tower fan blade 20 to rotate and controls its rotational speed. Under the different wind-speed modes, the controlling unit 42 controls the driving assembly 30 to output different rotational speeds. The controlling unit 42 controls the driving assembly 30 to operate for different time periods under the different time-setting modes. Through providing the multiple wind-speed modes and the multiple time-setting modes for the user to choose, convenience of using the detachable tower fan is increased.

[0026] With reference to FIGS. 2, 4 and 5A, to clean the detachable tower fan after use over time, since the housing 10 has the access opening 14 that communicates with the containing chamber 11 and since the tower fan blade 20 can be detached from the driving assembly 30, the user can withdraw the tower fan blade 20 via the access opening 14 for cleaning. The tower fan blade 20 is not electrically connected to other elements, so it can be washed directly with water. Furthermore, after withdrawing the tower fan blade 20 from the containing chamber 11, there will be more room for the user to clean the intake portion 12 and the exhaust portion 13 of the housing 10. The housing 10 can be put upside-down to directly wash the multiple intake railings 121 and the multiple exhaust railings 131 with water, effectively increasing convenience of cleaning the detachable tower fan. Moreover, because the access opening 14 is disposed at the top part of the housing 10 instead of the lateral walls, structural strength of the housing 10 will not be affected to maintain structural stability of the housing 10.

[0027] With reference to FIGS. 2, 4, 5A and 5B, the housing 10 has a cap 16 and a top plate 17. The cap 16 and the top plate 17 are both disposed at the top part of the housing 10. The access opening 14 is formed on the top plate 17. The cap 16 is detachably mounted at the top plate 17. Preferably, the cap 16 is mounted on the top plate 17 through magnetic fixation or screws, which is unlikely to fall off during transportation. While used indoors, the cap 16 can be mounted only with magnetic fixation. The cap 16 fixes and covers a top bearing-positioning element 18 of the housing 10. With the cap 16 taken off, the top bearing-positioning element 18 can be taken off, and therefore the tower fan blade 20 can be withdrawn. Additionally, the cap 16 prevents dusts and has better visual aesthetic. By combination of the cap 16 and the top plate 17, assembling stability of the cap 16 is increased.

[0028] Additionally, with reference to FIGS. 2, 4, 5A and 5B, the top plate 17 has a positioning step 171 surrounding the access opening 14. The top bearing-positioning element 18 detachably abuts the positioning step 171 and covers the access opening 14. The top bearing-positioning element 18 has multiple bearing-positioning-element-grabbing holes 181 and a top bearing 182. The multiple bearing-positioning-element-grabbing holes 181 are spaced apart from each other. The top bearing 182 is disposed at a center of the top bearing-positioning element 18. The tower fan blade 20 has a positioning rod 22, which extends into the top bearing 182 of the top bearing-positioning element 18. By cooperating the positioning step 171 and the top bearing-positioning element 18, assembling stability of the tower fan blade 20 is increased. The top bearing-positioning element 18 stabilizes the positioning rod 22 of the tower fan blade 20, increasing rotational stability of the tower fan blade 20.

[0029] With reference to FIG. 2, the multiple bearing-positioning-element-grabbing holes 181 of the top bearing-positioning element 18 facilitate detaching the top bearing-positioning element 18. The tower fan blade 20 has multiple blade grabbing holes 23 located at a top end of the tower fan blade 20 and spaced apart from each other. The multiple blade grabbing holes 23 facilitate grabbing and holding the tower fan blade 20, so that the tower fan blade 20 can be withdrawn from the containing chamber 11 of the housing 10 via the access opening 14. To use a conventional fan blade as the tower fan blade 20, simply add the multiple blade grabbing holes 23 on its top portion.

[0030] With reference to FIGS. 6 to 8, the tower fan blade 20 has a connecting portion 24, comprising a friction-coupling plate 241 and a shaft hole block 242. The friction-coupling plate 241 surrounds the shaft hole block 242. The connecting portion 24 is disposed at a bottom portion of the tower fan blade 20. The driving assembly 30 is disposed below the tower fan blade 20, which is at the bottom portion of the housing 10, and comprises a motor 31 and a coupling element 32. The motor 31 is connected to the coupling element 32. The connecting portion 24 of the tower fan blade 20 abuts the coupling element 32, so that the tower fan blade 20 is driven by the motor 31.

[0031] Additionally, the tower fan blade 20 is carried by the coupling element 32 through the connecting portion 24 so the tower fan blade 20 and the driving assembly 30 are connected to each other. When the tower fan blade 20 is grabbed and moved upwardly, the tower fan blade 20 and the driving assembly 30 are detached. When putting the tower fan blade 20 back on top of the coupling element 32, the connecting portion 24 of the tower fan blade 20 abuts the coupling element 32 only by the tower fan blade 20's weight, and hence the tower fan blade 20 and the driving assembly 30 are connected again. The coupling element 32 is designed in cooperation with the connecting portion 24 to increase convenience of detaching the tower fan blade 20.

[0032] Furthermore, with reference to FIGS. 6 to 8, the coupling element 32 has an abutting edge 321 on a top portion of the coupling element 32. The shaft hole block 242 protrudes downwardly from the bottom portion of the tower fan blade 20. When the tower fan blade 20 connects the driving assembly 30, the friction-coupling plate 241 of the connecting portion 24 abuts the abutting edge 321 of the coupling element 32, so that the driving assembly 30 rotates the tower fan blade 20 through friction between the coupling element 32 and the friction-coupling plate 241. The friction-coupling plate 241 is preferably made from flexible materials having higher coefficient of friction, such as rubber. The friction-coupling plate 241 increases friction, therefore increasing connecting stability of the tower fan blade 20 and the driving assembly 30.

[0033] In addition, with reference to FIGS. 6 to 8, the motor 31 has a motor shaft 33 having a guiding end 331 being conical. The coupling element 32 is mounted around the motor shaft 33. The shaft hole block 242 has a shaft hole. The guiding end 331 protrudes from the coupling element 32 and extends into the shaft hole block 242 of the tower fan blade 20. A diameter of the shaft hole corresponds to a diameter of the motor shaft 33. In the process of putting the tower fan blade 20 onto the coupling element 32, the conical guiding end 331 of the motor shaft 33 can easily extend into the tower fan blade 20 and provide guidance.

[0034] To sum up, the tower fan blade 20 of the detachable tower fan is disposed in the containing chamber 11 of the housing 10 and can be easily and quickly detached from or connected to the driving assembly 30. Furthermore, the housing 10 has the access opening 14 communicating with the containing chamber 11. Therefore, to clean the tower fan blade 20, the user can withdraw the tower fan blade 20 through the access opening 14 to clean, and the user can also easily clean the intake portion 12 and the exhaust portion 13 of the housing 10, efficiently increasing the convenience of cleaning the detachable tower fan.

[0035] Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and features of the invention, the disclosure is illustrative only. Changes may be made in the details, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.

Examples

Embodiment Construction

[0017]With reference to FIGS. 1 to 4, a detachable tower fan of the present disclosure comprises a housing 10, a tower fan blade 20, and a driving assembly 30.

[0018]With reference to FIGS. 4 to 6, the housing 10 is columnar and has a containing chamber 11, which is also columnar. The housing 10 comprises an intake portion 12, an exhaust portion 13, and an access opening 14 that respectively communicate with the containing chamber 11. The intake portion 12 and the exhaust portion 13 are disposed at lateral walls of the housing 10 and are spaced apart from each other. The access opening 14 is located at a top part of the housing 10.

[0019]With reference to FIGS. 2, 4 and 5A, the tower fan blade 20 is columnar and is disposed in the containing chamber 11 of the housing 10. The tower fan blade 20 has multiple blade vanes 21 formed at an outer surface of the tower fan blade. A contour of the tower fan blade 20 corresponds to a contour of the access opening 14. The tower fan blade 20 can p...

BACKGROUND OF THE INVENTION1. Field of the Invention

[0001] The present invention relates to a detachable tower fan, especially to a tower fan having a blade that can be easily withdrawn for cleaning.2. Description of Related Art

[0002] Various types of electric fans are available in the market for household use. One type of the electric fans is a tower fan, which is shaped like a vertical column and occupies less floor area as one of its features.

[0003] The main feature of a tower fan is that it blows linear airflow, different from rotational airflow blown by a normal electric fan. Therefore, the airflow from the tower fan blows for a longer distance, easily forming indoor air circulations. The linear airflow blows like natural wind, and hence makes users feel more comfortable.

[0004] However, tower fans have a lower market share and are not so common because they are hard to clean and their blades are hard to detach, still having room for improvement.SUMMARY OF THE INVENTION

[0005] The present invention provides a detachable tower fan to resolve drawbacks that cleaning a conventional tower fan is hard and inconvenient.

[0006] The detachable tower fan comprises a housing, a tower fan blade, and a driving assembly. The housing is columnar and comprises a containing chamber, an intake portion, an exhaust portion, and an access opening. The containing chamber is columnar and is disposed in the housing. The intake portion communicates with the containing chamber. The exhaust portion communicates with the containing chamber. The access opening communicates with the containing chamber and is disposed at a top part of the housing. The tower fan blade is columnar and disposed in the containing chamber of the housing. A contour of the tower fan blade corresponds to a contour of the access opening. The tower fan blade is able to pass through the access opening of the housing. The driving assembly is mounted in the housing, detachably connects the tower fan blade, and drives the tower fan blade to rotate, such that air is fed into the housing through the intake portion and is discharged from the exhaust portion.

[0007] The detachable tower fan is used to blow airflow. The driving assembly drives the tower fan blade to rotate, so air is fed into the housing through the intake portion of the housing and is discharged from the exhaust portion. The housing has the access opening that communicates with the containing chamber. The tower fan blade and the driving assembly are detachably connected. Therefore, to clean the tower fan blade, a user can withdraw the tower fan blade from the housing through the access opening. The tower fan blade is not electrically connected to other elements, so it can be washed directly with water. Furthermore, after the tower fan blade is withdrawn from the containing chamber, there will be more room for the user to clean the housing. Therefore, convenience of cleaning the detachable tower fan is increased.BRIEF DESCRIPTION OF THE DRAWINGS

[0008] FIG. 1 is a perspective view of an embodiment of a detachable tower fan in accordance with the present invention;

[0009] FIG. 2 is a partially-exploded view of the detachable tower fan shown in FIG. 1;

[0010] FIG. 3 is a front view of the detachable tower fan shown in FIG. 1;

[0011] FIG. 4 is a sectional side view of the detachable tower fan shown in FIG. 1;

[0012] FIG. 5A is a partial sectional side view of a top portion of the detachable tower fan shown in FIG. 1;

[0013] FIG. 5B is an enlarged partial sectional side view of a top portion of the detachable tower fan shown in FIG. 5A;

[0014] FIG. 6 is a partial sectional side view of a bottom portion of the detachable tower fan shown in FIG. 1;

[0015] FIG. 7 is a partial sectional side view of a connecting portion of a tower fan blade and a coupling element of a driving assembly of the detachable tower fan shown in FIG. 1; and

[0016] FIG. 8 is an exploded view of the connecting portion of the tower fan blade and the coupling element of the driving assembly of the detachable tower fan shown in FIG. 1.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0017] With reference to FIGS. 1 to 4, a detachable tower fan of the present disclosure comprises a housing 10, a tower fan blade 20, and a driving assembly 30.

[0018] With reference to FIGS. 4 to 6, the housing 10 is columnar and has a containing chamber 11, which is also columnar. The housing 10 comprises an intake portion 12, an exhaust portion 13, and an access opening 14 that respectively communicate with the containing chamber 11. The intake portion 12 and the exhaust portion 13 are disposed at lateral walls of the housing 10 and are spaced apart from each other. The access opening 14 is located at a top part of the housing 10.

[0019] With reference to FIGS. 2, 4 and 5A, the tower fan blade 20 is columnar and is disposed in the containing chamber 11 of the housing 10. The tower fan blade 20 has multiple blade vanes 21 formed at an outer surface of the tower fan blade. A contour of the tower fan blade 20 corresponds to a contour of the access opening 14. The tower fan blade 20 can pass through the access opening 14 of the housing 10. The multiple blade vanes 21 extend along the tower fan blade 20 lengthwise and are spaced apart from each other. The tower fan blade 20 can be a conventional product to lower costs.

[0020] With reference to FIGS. 4, 6 and 8, the driving assembly 30 is mounted inside and at a lower part of the housing 10, is detachably connected to the tower fan blade 20, and drives the tower fan blade 20 to rotate, so air is fed into the housing 10 through the intake portion 12 and is discharged from the exhaust portion 13.

[0021] With reference to FIGS. 3 and 4, the detachable tower fan is used to blow airflow. The driving assembly 30 drives the tower fan blade 20 to rotate, so air is fed into the housing 10 through the intake portion 12 of the housing 10 and is discharged from the exhaust portion 13.

[0022] With reference to FIGS. 2 to 4, the intake portion 12 of the housing 10 has multiple intake railings 121 spaced apart from each other. The exhaust portion 13 has multiple exhaust railings 131 spaced apart from each other. The multiple intake railings 121 and the multiple exhaust railings 131 are used to prevent users from accidentally touching the tower fan blade 20 in rotation to increase use safety. Besides, the multiple intake railings 121 and the multiple exhaust railings 131 are preferably made from stainless steel bars, which do not need coating or painting, have better visual aesthetic, are unlikely to get rusty, and are easier to clean.

[0023] Additionally, with reference to FIGS. 1 to 4, the detachable tower fan comprises a base 15 mounted below the housing 10, which is a bottom end of the housing 10. The detachable tower fan comprises a controlling assembly 40, comprising multiple controlling buttons 41 and a controlling unit 42. The multiple controlling buttons 41 are mounted at an outside surface of the base 15. The controlling unit 42 is mounted in the base 15 and is electrically connected to the driving assembly 30 and the multiple controlling buttons 41. The multiple controlling buttons 41 are operated to control the driving assembly 30 through the controlling unit 42 and can be used to turn on or off the driving assembly 30, to control the detachable tower fan to blow airflow or stop blowing and turn off.

[0024] In addition, the multiple controlling buttons 41 mounted at the outside surface of the base 15 facilitate users to control the detachable tower fan by stepping on the multiple controlling buttons 41 with their feet, increasing convenience of use. Because the controlling assembly 40 is mounted at the base 15, it is near the driving assembly 30, therefore reducing wiring complexity and error probability.

[0025] Furthermore, with reference to FIGS. 1 and 8, the base 15 has multiple displaying units 151 electrically connected to the controlling assembly 40. The controlling unit 42 has multiple wind-speed modes and multiple time-setting modes. The multiple displaying units 151 show different displaying arrangements respectively corresponding to the multiple wind-speed modes and the multiple time-setting modes. For example, the controlling unit 42 turns on the multiple displaying units 151 in different combinations and different orders to show different displaying arrangements. The controlling unit 42 controls the driving assembly 30 to drive the tower fan blade 20 to rotate and controls its rotational speed. Under the different wind-speed modes, the controlling unit 42 controls the driving assembly 30 to output different rotational speeds. The controlling unit 42 controls the driving assembly 30 to operate for different time periods under the different time-setting modes. Through providing the multiple wind-speed modes and the multiple time-setting modes for the user to choose, convenience of using the detachable tower fan is increased.

[0026] With reference to FIGS. 2, 4 and 5A, to clean the detachable tower fan after use over time, since the housing 10 has the access opening 14 that communicates with the containing chamber 11 and since the tower fan blade 20 can be detached from the driving assembly 30, the user can withdraw the tower fan blade 20 via the access opening 14 for cleaning. The tower fan blade 20 is not electrically connected to other elements, so it can be washed directly with water. Furthermore, after withdrawing the tower fan blade 20 from the containing chamber 11, there will be more room for the user to clean the intake portion 12 and the exhaust portion 13 of the housing 10. The housing 10 can be put upside-down to directly wash the multiple intake railings 121 and the multiple exhaust railings 131 with water, effectively increasing convenience of cleaning the detachable tower fan. Moreover, because the access opening 14 is disposed at the top part of the housing 10 instead of the lateral walls, structural strength of the housing 10 will not be affected to maintain structural stability of the housing 10.

[0027] With reference to FIGS. 2, 4, 5A and 5B, the housing 10 has a cap 16 and a top plate 17. The cap 16 and the top plate 17 are both disposed at the top part of the housing 10. The access opening 14 is formed on the top plate 17. The cap 16 is detachably mounted at the top plate 17. Preferably, the cap 16 is mounted on the top plate 17 through magnetic fixation or screws, which is unlikely to fall off during transportation. While used indoors, the cap 16 can be mounted only with magnetic fixation. The cap 16 fixes and covers a top bearing-positioning element 18 of the housing 10. With the cap 16 taken off, the top bearing-positioning element 18 can be taken off, and therefore the tower fan blade 20 can be withdrawn. Additionally, the cap 16 prevents dusts and has better visual aesthetic. By combination of the cap 16 and the top plate 17, assembling stability of the cap 16 is increased.

[0028] Additionally, with reference to FIGS. 2, 4, 5A and 5B, the top plate 17 has a positioning step 171 surrounding the access opening 14. The top bearing-positioning element 18 detachably abuts the positioning step 171 and covers the access opening 14. The top bearing-positioning element 18 has multiple bearing-positioning-element-grabbing holes 181 and a top bearing 182. The multiple bearing-positioning-element-grabbing holes 181 are spaced apart from each other. The top bearing 182 is disposed at a center of the top bearing-positioning element 18. The tower fan blade 20 has a positioning rod 22, which extends into the top bearing 182 of the top bearing-positioning element 18. By cooperating the positioning step 171 and the top bearing-positioning element 18, assembling stability of the tower fan blade 20 is increased. The top bearing-positioning element 18 stabilizes the positioning rod 22 of the tower fan blade 20, increasing rotational stability of the tower fan blade 20.

[0029] With reference to FIG. 2, the multiple bearing-positioning-element-grabbing holes 181 of the top bearing-positioning element 18 facilitate detaching the top bearing-positioning element 18. The tower fan blade 20 has multiple blade grabbing holes 23 located at a top end of the tower fan blade 20 and spaced apart from each other. The multiple blade grabbing holes 23 facilitate grabbing and holding the tower fan blade 20, so that the tower fan blade 20 can be withdrawn from the containing chamber 11 of the housing 10 via the access opening 14. To use a conventional fan blade as the tower fan blade 20, simply add the multiple blade grabbing holes 23 on its top portion.

[0030] With reference to FIGS. 6 to 8, the tower fan blade 20 has a connecting portion 24, comprising a friction-coupling plate 241 and a shaft hole block 242. The friction-coupling plate 241 surrounds the shaft hole block 242. The connecting portion 24 is disposed at a bottom portion of the tower fan blade 20. The driving assembly 30 is disposed below the tower fan blade 20, which is at the bottom portion of the housing 10, and comprises a motor 31 and a coupling element 32. The motor 31 is connected to the coupling element 32. The connecting portion 24 of the tower fan blade 20 abuts the coupling element 32, so that the tower fan blade 20 is driven by the motor 31.

[0031] Additionally, the tower fan blade 20 is carried by the coupling element 32 through the connecting portion 24 so the tower fan blade 20 and the driving assembly 30 are connected to each other. When the tower fan blade 20 is grabbed and moved upwardly, the tower fan blade 20 and the driving assembly 30 are detached. When putting the tower fan blade 20 back on top of the coupling element 32, the connecting portion 24 of the tower fan blade 20 abuts the coupling element 32 only by the tower fan blade 20's weight, and hence the tower fan blade 20 and the driving assembly 30 are connected again. The coupling element 32 is designed in cooperation with the connecting portion 24 to increase convenience of detaching the tower fan blade 20.

[0032] Furthermore, with reference to FIGS. 6 to 8, the coupling element 32 has an abutting edge 321 on a top portion of the coupling element 32. The shaft hole block 242 protrudes downwardly from the bottom portion of the tower fan blade 20. When the tower fan blade 20 connects the driving assembly 30, the friction-coupling plate 241 of the connecting portion 24 abuts the abutting edge 321 of the coupling element 32, so that the driving assembly 30 rotates the tower fan blade 20 through friction between the coupling element 32 and the friction-coupling plate 241. The friction-coupling plate 241 is preferably made from flexible materials having higher coefficient of friction, such as rubber. The friction-coupling plate 241 increases friction, therefore increasing connecting stability of the tower fan blade 20 and the driving assembly 30.

[0033] In addition, with reference to FIGS. 6 to 8, the motor 31 has a motor shaft 33 having a guiding end 331 being conical. The coupling element 32 is mounted around the motor shaft 33. The shaft hole block 242 has a shaft hole. The guiding end 331 protrudes from the coupling element 32 and extends into the shaft hole block 242 of the tower fan blade 20. A diameter of the shaft hole corresponds to a diameter of the motor shaft 33. In the process of putting the tower fan blade 20 onto the coupling element 32, the conical guiding end 331 of the motor shaft 33 can easily extend into the tower fan blade 20 and provide guidance.

[0034] To sum up, the tower fan blade 20 of the detachable tower fan is disposed in the containing chamber 11 of the housing 10 and can be easily and quickly detached from or connected to the driving assembly 30. Furthermore, the housing 10 has the access opening 14 communicating with the containing chamber 11. Therefore, to clean the tower fan blade 20, the user can withdraw the tower fan blade 20 through the access opening 14 to clean, and the user can also easily clean the intake portion 12 and the exhaust portion 13 of the housing 10, efficiently increasing the convenience of cleaning the detachable tower fan.

[0035] Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and features of the invention, the disclosure is illustrative only. Changes may be made in the details, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.

Examples

Embodiment Construction

[0017]With reference to FIGS. 1 to 4, a detachable tower fan of the present disclosure comprises a housing 10, a tower fan blade 20, and a driving assembly 30.

[0018]With reference to FIGS. 4 to 6, the housing 10 is columnar and has a containing chamber 11, which is also columnar. The housing 10 comprises an intake portion 12, an exhaust portion 13, and an access opening 14 that respectively communicate with the containing chamber 11. The intake portion 12 and the exhaust portion 13 are disposed at lateral walls of the housing 10 and are spaced apart from each other. The access opening 14 is located at a top part of the housing 10.

[0019]With reference to FIGS. 2, 4 and 5A, the tower fan blade 20 is columnar and is disposed in the containing chamber 11 of the housing 10. The tower fan blade 20 has multiple blade vanes 21 formed at an outer surface of the tower fan blade. A contour of the tower fan blade 20 corresponds to a contour of the access opening 14. The tower fan blade 20 can p...

Claims

1. A detachable tower fan comprising:a housing being columnar and comprisinga containing chamber being columnar and disposed in the housing;an intake portion communicating with the containing chamber;an exhaust portion communicating with the containing chamber; andan access opening communicating with the containing chamber and located at a top part of the housing;a tower fan blade being columnar and disposed in the containing chamber of the housing; a contour of the tower fan blade corresponding to a contour of the access opening; the tower fan blade being able to pass through the access opening of the housing; anda driving assembly mounted in the housing, detachably connecting the tower fan blade, and driving the tower fan blade to rotate, such that air is fed into the housing through the intake portion and discharged from the exhaust portion, whereinthe driving assembly is disposed at a bottom part of the housing and comprisesa motor;a coupling element connecting the motor and having an abutting edge; andthe tower fan blade has a friction-coupling plate disposed at a bottom end of the tower fan blade and abutting the abutting edge, such that the tower fan blade is driven by the motor.

2. The detachable tower fan as claimed in claim 1, whereinthe housing hasa top bearing-positioning element disposed at the access opening;a cap detachably mounted on the top bearing-positioning element; andthe tower fan blade hasa positioning rod extending into the top bearing-positioning element.

3. The detachable tower fan as claimed in claim 2, whereinthe housing hasa positioning step disposed on the top part of the housing and surrounding the access opening;the top bearing-positioning element detachably abuts the positioning step, covers the access opening, and hasa top bearing disposed in a center of the top bearing-positioning element;the positioning rod of the tower fan blade extends into the top bearing of the top bearing-positioning element.

4. (canceled)5. (canceled)6. The detachable tower fan as claimed in claim 1, whereinthe motor hasa motor shaft havinga guiding end disposed at a tip of the motor shaft and being conical;the coupling element is mounted around the motor shaft;the tower fan blade hasa shaft hole block havinga shaft hole; a diameter of the shaft hole corresponding to a diameter of the motor shaft;the guiding end protrudes from the coupling element and extends into the shaft hole of the shaft hole block of the tower fan blade.

7. The detachable tower fan as claimed in claim 3, whereinthe motor hasa motor shaft havinga guiding end disposed at a tip of the motor shaft and being conical;the coupling element is mounted around the motor shaft;the tower fan blade hasa shaft hole block havinga shaft hole; a diameter of the shaft hole corresponding to a diameter of the motor shaft;the guiding end protrudes from the coupling element and extends into the shaft hole of the shaft hole block of the tower fan blade.

8. The detachable tower fan as claimed in claim 1, wherein the tower fan blade has multiple blade grabbing holes located at a top end of the tower fan blade and spaced apart from each other.

9. The detachable tower fan as claimed in claim 7, wherein the tower fan blade has multiple blade grabbing holes located at a top end of the tower fan blade and spaced apart from each other.

10. The detachable tower fan as claimed in claim 2, wherein the top bearing-positioning element has multiple bearing-positioning-element-grabbing holes spaced apart from each other.

11. The detachable tower fan as claimed in claim 9, wherein the top bearing-positioning element has multiple bearing-positioning-element-grabbing holes spaced apart from each other.

12. The detachable tower fan as claimed in claim 1, wherein the intake portion of the housing has multiple intake railings spaced apart from each other, and the exhaust portion has multiple exhaust railings spaced apart from each other.

13. The detachable tower fan as claimed in claim 11, wherein the intake portion of the housing has multiple intake railings spaced apart from each other, and the exhaust portion has multiple exhaust railings spaced apart from each other.

14. The detachable tower fan as claimed in claim 1, whereinthe detachable tower fan comprisesa base mounted below the housing;a controlling assembly comprisingmultiple controlling buttons mounted at an outside surface of the base;a controlling unit mounted in the base and electrically connected to the driving assembly and the multiple controlling buttons;the multiple controlling buttons are operated to control the driving assembly through the controlling unit.

15. The detachable tower fan as claimed in claim 13, whereinthe detachable tower fan comprisesa base mounted below the housing;a controlling assembly comprisingmultiple controlling buttons mounted at an outside surface of the base;a controlling unit mounted in the base and electrically connected to the driving assembly and the multiple controlling buttons;the multiple controlling buttons are operated to control the driving assembly through the controlling unit.

16. The detachable tower fan as claimed in claim 14, whereinthe base has multiple displaying units electrically connected to the controlling assembly;the controlling unit has multiple wind-speed modes and multiple time-setting modes;the multiple displaying units show different displaying arrangements respectively corresponding to the multiple wind-speed modes and the multiple time-setting modes;the controlling unit controls rotational speeds outputted by the driving assembly to drive the tower fan blade to rotate under the different wind-speed modes; andthe controlling unit controls the driving assembly to operate for different time periods under the different time-setting modes.

17. The detachable tower fan as claimed in claim 15, whereinthe base has multiple displaying units electrically connected to the controlling assembly;the controlling unit has multiple wind-speed modes and multiple time-setting modes;the multiple displaying units show different displaying arrangements respectively corresponding to the multiple wind-speed modes and the multiple time-setting modes;the controlling unit controls rotational speeds outputted by the driving assembly to drive the tower fan blade to rotate under the different wind-speed modes; andthe controlling unit controls the driving assembly to operate for different time periods under the different time-setting modes.

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