Handheld dust blower

Abstract

The utility model discloses a handheld dust blower which comprises a dust blowing device, a display device and an adjusting device, a fan is axially arranged in a shell, a blowing nozzle is movably arranged at the front end of the shell, the display device and the adjusting device are respectively and correspondingly arranged on the upper portion of a handle, and a display screen is respectively provided with an electric quantity display area and a gear display area. The adjusting knob is movably connected with a gear switch and a touch switch which are arranged on the auxiliary PCB, a battery pack is arranged in the handle, and a plurality of air inlet holes and a charging jack are formed in the bottom of the handle. Stepless adjustment can be achieved by rotating the knob according to needs, the switch and gear adjustment are integrally arranged, use is more convenient, the handle shell is made of transparent materials, gear and electric quantity conditions can be known at any time, the ventilation holes are formed in the bottom of the handle, the temperature of the main PCB can be reduced, and the service life is greatly prolonged. The utility model has the advantages of simple structure, small volume, more flexible operation, low cost and good user experience.

Description

Technical Field

[0001] The utility model relates to the technical field of dust blowers, in particular to a handheld dust blower. Background Art

[0002] Dust blowers are mainly used for dust removal work in household life and are most suitable for use in some sanitary dead corners. A dust blower uses a fan blade to generate a high-speed air flow, blows out the high-speed air flow through a blow pipe, generates a strong and precise air output, and drives the surrounding air to work together, so as to clean the position where dust needs to be blown.

[0003] During the working process of the existing dust blowers, multiple gear adjustments are provided when in use, and the user can adjust the generated wind force according to the provided multiple gears. However, the gear adjustments provided by the existing dust blowers are generally of a fixed three-stage or multi-stage structure, and the blown wind force is only fixed in several types and cannot achieve stepless adjustment, resulting in insufficient adjustability in use. In addition, the structure design of the existing dust blowers is unreasonable, there are no ventilation holes, the internal control board is prone to generate a large amount of heat, the temperature rises rapidly, and the rise of the control board temperature is likely to cause damage to the internal circuit, resulting in its inability to work normally and affecting the service life. The existing dust blowers have a complex structure, high cost, and large volume, and there is no power display and gear display, resulting in poor user experience.

[0004] Therefore, engineers in this field need to develop a handheld dust blower with a simple structure, reasonable design, small volume, more flexible operation, and good user experience to meet the needs of current families. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a handheld dust blower with a simple structure, small volume, more flexible operation, low cost, and good user experience.

[0006] To solve the above technical problem, the technical solution of the utility model is as follows:

[0007] A handheld dust blower, comprising: a dust blowing device, a display device, and an adjustment device. The dust blowing device includes a housing, a blower, and a nozzle. The blower is axially arranged inside the housing, the nozzle is movably arranged at the front end of the housing, a handle is vertically provided at the lower part of the housing, the display device and the adjustment device are respectively arranged corresponding to the upper part of the handle. The display device includes a display screen and a main PCB board arranged inside the handle. The display screen is electrically connected to the main PCB board. A power display area and a gear display area are respectively arranged on the display screen. The adjustment device includes an adjustment knob and a secondary PCB board. The adjustment knob is located in a movable slot arranged in the middle of the secondary PCB board. The adjustment knob is movably connected to a gear switch and a touch switch arranged on the secondary PCB board. A battery pack is arranged inside the handle, and a plurality of air inlet holes and a charging jack are respectively arranged at the bottom of the handle. The main PCB board is electrically connected to the battery pack, the secondary PCB board, and the blower respectively.

[0008] In the above structure, the housing is a cylindrical shell structure. A first inner lining is arranged inside the housing. A plurality of first clamping grooves are symmetrically arranged on both sides of the lower part of the first inner lining. The blower is movably arranged at a corresponding installation position of the first inner lining. A limit matching the handle is embedded in the lower part of the housing. A dust-proof net assembly is embedded at the rear end of the blower.

[0009] In the above structure, the handle is a cavity structure with a circular or oval cross-section. The handle includes a transparent housing, a second inner lining, and an end cover. The second inner lining is movably arranged inside the transparent housing. Clamping structures are respectively arranged at both ends of the second inner lining corresponding to the first inner lining and the end cover. The handle is respectively clamped and connected to the first inner lining and the end cover.

[0010] In the above structure, the display screen is fixedly arranged on the upper part of the main control PCB board. The display screen is an LCD display screen. The top surface of the display screen matches the inner side surface of the transparent housing. A TYPE-C socket is arranged at the lower part of the main PCB board. The TYPE-C socket is arranged corresponding to the charging jack.

[0011] In the above structure, a receiving cavity for the battery pack and a plurality of second clamping grooves are respectively arranged inside the second inner lining. An installation opening for the display screen penetrates through the side surface of the second inner lining. The main PCB board and the battery pack are movably arranged inside the second inner lining.

[0012] In the above structure, the movable slot matches the adjusting knob. The gear switch and the touch switch are respectively arranged on both sides of the movable slot. The central axis of the adjusting knob is parallel to the secondary PCB board. One side rotating shaft of the adjusting knob is movably arranged in the central hole of the gear switch, and the other side rotating shaft of the adjusting knob is in fit connection with the top surface of the touch switch.

[0013] In the above structure, the dust-proof net assembly includes a dust-proof net and a fixing frame. The dust-proof net is integrally arranged inside the fixing frame. The fixing frame is embedded in the housing. A plurality of buckles are circumferentially arranged on the front side of the fixing frame, and the plurality of buckles match the third card slots correspondingly arranged at the rear end of the housing.

[0014] In the above structure, the rear end of the nozzle is provided with a rotary buckle structure that matches the inner side of the front end of the first lining. The nozzle includes any one of a flat nozzle, a needle-shaped nozzle, and a funnel-shaped nozzle.

[0015] In the above structure, the material of the transparent housing is any one of PC, PVC, PP, and ABS.

[0016] The beneficial effects of the present utility model are as follows:

[0017] By arranging a display device and an adjusting device on the handle, the present utility model can achieve stepless adjustment by turning the knob as needed, and integrates the switch and the gear adjustment, making it more convenient to use. The handle housing of the present utility model is made of a transparent material, so that the gear and power status can be understood at any time during use without affecting the operation. Ventilation holes are provided at the bottom of the handle to reduce the temperature of the PCB board, greatly improving the service life. The structure of the present utility model is simple, small in size, more flexible in operation, and has a good user experience. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of an embodiment of the handheld dust blower of the present utility model;

[0019] Figure 2 is a schematic cross-sectional view of an embodiment of the handheld dust blower of the present utility model;

[0020] Figure 3 is an exploded structural view of an embodiment of the handheld dust blower of the present utility model.

[0021] In the figure, 1 - housing, 2 - blower, 3 - nozzle, 4 - handle, 5 - display screen, 6 - main PCB board, 7 - adjusting knob, 8 - secondary PCB board, 9 - battery pack, 10 - first lining, 11 - transparent housing, 12 - second lining, 13 - end cap, 14 - gear switch, 15 - dust-proof net, 16 - touch switch, 17 - sleeve. Detailed Embodiments

[0022] The specific embodiments of the present utility model will be further described below in conjunction with the accompanying drawings. It should be noted here that the description of these embodiments is used to help understand the present utility model, but does not constitute a limitation on the present utility model. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] As Figures 1-3 shown, a hand-held dust blower includes: a dust blowing device, a display device, and an adjustment device. The dust blowing device includes a housing 1, a blower 2, and a nozzle 3. The blower 2 is axially arranged inside the housing 1, the nozzle 3 is movably arranged at the front end of the housing 1, a handle 4 is vertically arranged at the lower part of the housing 1, the display device and the adjustment device are respectively arranged corresponding to the upper part of the handle 1. The display device includes a display screen 5 and a main PCB board 6 arranged inside the handle 4. The display screen 5 is electrically connected to the main PCB board 6. A power display area and a gear display area are respectively arranged on the display screen 5. The adjustment device includes an adjustment knob 7 and a secondary PCB board 8. The adjustment knob 7 is located in a movable slot arranged in the middle of the secondary PCB board 8. The adjustment knob 7 is movably connected to a gear switch 14 and a touch switch 16 arranged on the secondary PCB board 8. A battery pack 9 is arranged inside the handle 4. A plurality of air inlet holes and a charging jack are respectively arranged at the bottom of the handle 4. The main PCB board 6 is electrically connected to the battery pack 9, the secondary PCB board 8, and the blower 2.

[0024] Specifically, in this embodiment, the gear switch 14 and the touch switch 16 are vertically arranged on the secondary PCB board 8, and the gear switch 14 and the touch switch 16 are electrically connected to the control circuit on the secondary PCB board 8.

[0025] Specifically, in this embodiment, a plurality of air ducts are arranged corresponding to a dust-proof net 15 at the rear end of the blower 2.

[0026] In a preferred embodiment of the present utility model, the housing 1 is a cylindrical shell structure. A first inner lining 10 is arranged inside the housing 1. A plurality of card slots are symmetrically arranged on both sides of the lower part of the first inner lining 10. The blower 2 is movably arranged at the corresponding installation position of the first inner lining 10. A limit matching the handle 4 is embedded at the lower part of the housing 1. A dust-proof net assembly is embedded at the rear end of the blower 2.

[0027] Specifically, in this embodiment, the housing 1 is made of plastic material. A plurality of buckle limit structures are arranged on the inner side of the housing 1. The plurality of buckle limit structures match the corresponding first card slots of the first inner lining 10. A plurality of ventilation holes are arranged corresponding to the handle 4 through the lower parts of the housing 1 and the first inner lining 10.

[0028] Specifically, in this embodiment, the first inner lining 10 includes a sleeve 17 movably arranged at the front end. The front end of the sleeve 17 is provided with a buckle structure matching the nozzle 3. The rear end of the sleeve 17 is provided with a connection structure corresponding to the first inner lining 10. The sleeve 17 matches the outer shell 1.

[0029] In a preferred embodiment of the present utility model, the handle 4 is a cavity structure with a circular or oval cross-section. The handle 4 includes a transparent outer shell 11, a second inner lining 12, and an end cap 13. The second inner lining 12 is movably arranged inside the transparent outer shell 11. Buckle structures are respectively provided at both ends of the second inner lining 12 corresponding to the first inner lining 10 and the end cap 13. The handle 4 is respectively snap-connected to the first inner lining 10 and the end cap 13.

[0030] Specifically, in this embodiment, the second inner lining 12 is embedded inside the transparent outer shell 11. The display screen 5 is embedded in the installation opening provided in the upper part of the second inner lining 12, and the power level and gear status can be viewed through the outer shell at any time.

[0031] In a preferred embodiment of the present utility model, the display screen 5 is fixedly arranged on the upper part of the main PCB board 6. The display screen 5 is an LCD display screen. The top surface of the display screen 5 matches the inner side surface of the transparent outer shell 11. A TYPE-C socket is provided at the lower part of the main PCB board 6. The TYPE-C socket is correspondingly arranged with the charging jack. A receiving cavity for the battery pack 9 and a plurality of second card slots are respectively provided inside the second inner lining 12. An installation opening for the display screen 5 penetrates through the side surface of the second inner lining 12. The main PCB board 6 and the battery pack 9 are movably arranged inside the second inner lining 12.

[0032] Specifically, in this embodiment, the display screen 5 is fixedly arranged on the upper part of the main PCB board 6. The display screen 5 matches the installation opening.

[0033] Specifically, in this embodiment, a plurality of buckle structures matching the first card slots are correspondingly provided at the upper part of the second inner lining 12. The plurality of second card slots include a card slot for fixing the main PCB board 6 and a card slot for fixing the display screen 5.

[0034] Specifically, in this embodiment, the battery pack 9 is a variety of new energy batteries including lithium batteries.

[0035] In a preferred embodiment of the present utility model, the activity slot matches the adjustment knob 7. The gear switch 14 and the touch switch 16 are respectively correspondingly arranged on both sides of the activity slot. The central axis of the adjustment knob 7 is parallel to the secondary PCB board 8. One side rotation shaft of the adjustment knob 7 is movably arranged in the central hole of the gear switch 14. The other side rotation shaft of the adjustment knob 7 is in surface contact connection with the top surface of the touch switch 16.

[0036] Specifically, in this embodiment, the gear switch 14 and the touch switch 16 are respectively fixedly arranged on the upper part of the secondary PCB board 8, and the adjustment knob 7 is rotatably connected to the gear switch 14.

[0037] In a preferred embodiment of the present utility model, the dust-proof net assembly includes a dust-proof net 15 and a fixing frame. The dust-proof net 15 is integrally arranged inside the fixing frame. The fixing frame is embedded in the housing. A plurality of buckles are circumferentially arranged on the front side of the fixing frame, and the plurality of buckles are matched with the third card slots correspondingly arranged at the rear end of the housing 1.

[0038] Specifically, in this embodiment, the fixing frame matches the housing 1. A limiting ring is extended and arranged at the front end of the fixing frame. The plurality of buckles are evenly arranged on the limiting ring, and the plurality of buckles are respectively matched with the corresponding third card slots.

[0039] In a preferred embodiment of the present utility model, a rotary buckle structure matched with the inner side of the front end of the first inner liner 10 is arranged at the rear end of the nozzle 3. The nozzle 3 includes any one of a flat nozzle, a needle-shaped nozzle, a funnel-shaped nozzle, etc.

[0040] Specifically, in this embodiment, the nozzle 3 is made of plastic material, and the shape of the air outlet of the nozzle 3 can be set according to specific environmental requirements.

[0041] In a preferred embodiment of the present utility model, the material of the transparent housing 11 is any one of PC, PVC, PP, ABS, etc.

[0042] Specifically, in this embodiment, by arranging ventilation holes at the bottom of the handle 4, it is beneficial to the heat dissipation of the main PCB board 6. Through the operation of the dust blowing device, the outside air can enter the inside of the housing 1, and enter the inside of the handle 4 through the ventilation holes corresponding to the first inner liner 10 on the housing 1, so that the air can blow to the surface of the main PCB board 6, and then the heat on the surfaces of the main PCB board 6 and the battery pack 9 is taken away, ensuring that the temperatures of the main PCB board 6 and the secondary PCB board 8 will not be too high, and thus ensuring that it can work normally. At the same time, it also dissipates heat from the internal battery pack 9, ensuring that the heat generated by the battery pack 9 will not affect the operation of the main PCB board 6 and the secondary PCB board 8.

[0043] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0045] The above has described in detail the embodiments of the present utility model in conjunction with the accompanying drawings, but the present utility model is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present utility model, various changes, modifications, substitutions, and variations made to these embodiments still fall within the protection scope of the present utility model.

Claims

1. A handheld dust blower, comprising: A dust blowing device, a display device, and an adjustment device, wherein the dust blowing device comprises a shell, a fan, and a nozzle, wherein the fan is axially arranged inside the shell, the nozzle is movably arranged at the front end of the shell, and a handle is vertically arranged at the lower part of the shell, characterized in that the display device and the adjustment device are respectively arranged at the upper part of the handle, the display device comprises a display screen and a main PCB board arranged inside the handle, the display screen is electrically connected to the main PCB board, and a power display area and a gear display area are respectively arranged on the display screen, the adjustment device comprises an adjustment knob and a sub-PCB board, the adjustment knob is located in an active groove arranged in the middle part of the sub-PCB board, the adjustment knob is movably connected to the gear switch and the touch switch arranged on the sub-PCB board, a battery pack is arranged inside the handle, and a plurality of air inlet holes and a charging jack are respectively arranged at the bottom of the handle, and the main PCB board is respectively electrically connected to the battery pack, the sub-PCB board, and the fan.

2. The handheld dust blower according to claim 1, characterized in that: The outer shell is a cylindrical shell structure, and a first lining is provided inside the outer shell. A plurality of first slots are symmetrically provided on both sides of the lower portion of the first lining. The fan is movably arranged at the corresponding mounting position of the first lining. A limiter matching the handle is embedded in the lower portion of the outer shell, and a dustproof net assembly is embedded in the rear end of the fan.

3. The handheld dust blower according to claim 2, characterized in that: The handle is a cavity structure with a circular or elliptical cross-section, and includes a transparent shell, a second lining, and an end cover. The second lining is movably arranged inside the transparent shell, and the two ends of the second lining are respectively provided with snap structures corresponding to the first lining and the end cover, and the handle is respectively snap-connected with the first lining and the end cover.

4. The handheld dust blower according to claim 3, characterized in that: The display screen is fixedly arranged on the upper part of the main PCB board, the display screen is an LCD display screen, the top surface of the display screen matches the inner side surface of the transparent shell, and a TYPE-C socket is arranged at the lower part of the main PCB board, and the TYPE-C socket is arranged corresponding to the charging socket.

5. The handheld dust blower according to claim 4, characterized in that: The second lining is provided with a accommodating cavity for the battery pack and a plurality of second slots therein, a side surface of the second lining is penetrated by a mounting opening for the display screen, and the main PCB board and the battery pack are movably arranged inside the second lining.

6. The handheld dust blower according to claim 5, characterized in that: The movable groove matches the adjusting knob, the gear switch and the touch switch are respectively arranged on both sides of the movable groove, the central axis of the adjusting knob is parallel to the auxiliary PCB board, the rotating shaft on one side of the adjusting knob is movably arranged in the central hole of the gear switch, and the rotating shaft on the other side of the adjusting knob is fitted and connected with the top surface of the touch switch.

7. The handheld dust blower according to claim 2, characterized in that: The dustproof net assembly includes a dustproof net and a fixing frame. The dustproof net is integrally arranged inside the fixing frame. The fixing frame is embedded in the outer shell. A plurality of buckles are circumferentially arranged on the front side of the fixing frame. The plurality of buckles match with third slots correspondingly arranged on the rear end of the outer shell.

8. The handheld dust blower according to claim 2, characterized in that: The rear end of the mouthpiece is provided with a rotating buckle structure matching the inner side of the front end of the first liner, and the mouthpiece includes any one of a flat mouthpiece, a needle-shaped mouthpiece, and a funnel-shaped mouthpiece.

9. The handheld dust blower according to claim 3, characterized in that: The material of the transparent shell is any one of PC, PVC, PP and ABS.

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