Handheld leaf blowing machine

Abstract

The utility model provides a handheld leaf blower. The handheld leaf blower comprises a machine shell, the driving part is connected with the machine shell and comprises a battery, a motor and fan blades which are coaxially arranged, the battery is used for supplying power to the motor, and the motor is used for driving the fan blades to rotate to generate airflow; the airflow part is connected with the driving part and comprises a flow collector and a stator guide vane air duct which are coaxially arranged, and the stator guide vane air duct is used for exhausting air of the flow collector; wherein a shaft body of the motor penetrates through the current collector and is connected with the fan blades, the motor and the fan are located on the two opposite sides of the current collector respectively, and the fan blades are located on the side close to the stator guide vane air duct. The fan is compact in overall structure, small in size and light in weight, the motor is prevented from influencing the available size of the duct through position distribution of the motor and the fan blades, design of the fan blades is facilitated, replacement of the motor is facilitated, and meanwhile heat dissipation of the motor and the battery is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to garden tool technical field especially is hand held blowing leaf machine. BACKGROUND

[0002] As a common garden tool, the blower is mainly applied to cleaning fallen leaves on outdoor roads. Most blowers have large overall sizes, which are inconvenient to store and move.

[0003] In addition, the motors in most blowers on the market are placed in the duct, that is, the motor is closer to the blowing port than the fan blade. This structure blocks the flow of the air outlet to some extent, reduces the air volume of the air outlet, and the larger the motor, the larger the volume of the duct, which increases the overall size of the blower to some extent. In addition, the battery pack will heat up when the blower is working. When the battery pack reaches a certain temperature, it will have some effect on the battery discharge. The battery pack needs to be cooled, and the additional air duct for cooling the battery pack increases the complexity of the structure of the blower. SUMMARY

[0004] The utility model discloses in order to avoid prior art's insufficient, provide a kind of hand-held blowing leaf machine of small size and convenient to heat dissipation of holding structure.

[0005] The utility model discloses a hand-held blowing leaf machine, which comprises:

[0006] A casing;

[0007] A driving part connected to the casing, the driving part comprising a battery, a motor and a fan blade arranged on the same axis, the battery being used to power the motor, and the motor being used to rotate the fan blade to generate airflow;

[0008] An airflow part connected to the driving part, the airflow part comprising a current collector and a stator guide vane cylinder arranged on the same axis, the stator guide vane cylinder being used to discharge the gas from the current collector;

[0009] Wherein, the shaft of the motor passes through the current collector and is connected to the fan blade, the motor and the fan are respectively located on opposite sides of the current collector, and the fan blade is located on the side close to the stator guide vane cylinder.

[0010] In several embodiments, the casing comprises a holding shell, an air inlet cover and a blowing pipe, the air inlet cover is arranged at the front end of the holding shell and is connected to the current collector, the rear end of the holding shell extends outwardly to be connected to the blowing pipe, and the blowing pipe is coaxially arranged at the rear end of the stator guide vane cylinder.

[0011] In several embodiments, the blowing pipe is a straight cylinder, and the air inlet end of the straight cylinder is inserted into the holding shell and communicates with the stator guide vane cylinder.

[0012] In some embodiments, the blowing pipe is a siphon air duct, a channel for external air intake is formed between the air inlet end of the siphon air duct and the outer wall of the holding shell, and the siphon air duct is in communication with the stator guide vane air duct, the diameter of the siphon air duct is between 90-110mm, and the distance between the air inlet of the siphon air duct and the blade end surface is between 80-180mm.

[0013] In some embodiments, the battery is connected to the holding shell and is close to the air inlet cover.

[0014] In some embodiments, the current collector comprises a coaxial current collector body and a duct, a guide plate is arranged in the current collector body, a fixing seat is arranged on the guide plate, the fixing seat is used to connect the motor, and the fixing seat is coaxially arranged with the duct.

[0015] In some embodiments, the stator guide vane air duct comprises an outer cylinder, a cone contained in the outer cylinder, and a wind diffuser arranged between the cone and the outer cylinder.

[0016] In some embodiments, the hub ratio of the fan blade is 0.28-0.36.

[0017] In some embodiments, at least one waist-shaped hole is arranged on the fixing seat, and the waist-shaped hole corresponds to the position of the connecting hole on the motor.

[0018] In some embodiments, the distance between the motor end surface and the blade end surface is between 30-60mm, and the diameter of the duct is between 60-85mm.

[0019] The utility model has the following beneficial effects:

[0020] The utility model has the advantages of compact overall structure, reduced size and light weight, the position distribution of the motor and the fan blade avoids the influence of the motor on the available volume of the duct, facilitates the design of the fan blade, and facilitates the replacement of the motor, the battery and the motor are located on the same axis, facilitating the heat dissipation of the motor and the battery, and the siphon air duct can be used to adapt to different use requirements. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings described herein are only for the purpose of illustrating selected embodiments, and should not be considered as limiting the scope of the utility model.

[0022] Figure 1 The explosion structure of the handheld blowing machine in embodiment 1 is schematically shown;

[0023] Figure 2 The cross-sectional structure of the handheld blowing machine in embodiment 1 is schematically shown;

[0024] Figure 3 schematically shows Figure 1 an enlarged structure of the current collector;

[0025] Figure 4 schematically shows Figure 1 a side view structure of the motor combined with the current collector;

[0026] Figure 5 schematically shows Figure 2 an air flow structure in a working state;

[0027] Figure 6 schematically shows an air flow structure in a working state of the handheld blower in embodiment 2. DETAILED DESCRIPTION

[0028] Hereinafter, the embodiments of the present application will be described in detail in order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below, obviously, the described embodiments are part of the embodiments of the present application, but not all the embodiments.

[0029] Therefore, the detailed description of the embodiments of the present application provided below is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application, based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0030] The terms used herein are intended to explain the embodiments, and are not intended to limit and / or define the present application.

[0031] Embodiment 1

[0032] As Figures 1-4 shown, the handheld blower in the present embodiment mainly comprises a casing 10, a driving part 20 connected with the casing 10, and an air flow part 30 connected with the driving part 20, the driving part 20 provides air flow, and the air flow part 30 collects and discharges the air flow to realize the blowing function.

[0033] Specifically, the casing 10 comprises a holding shell 11, an air inlet cover 12 and a blowing pipe 13, the front end of the holding shell 11 is connected with the air inlet cover 12, and the rear end of the holding shell 11 extends outwardly to be connected with the blowing pipe 13.

[0034] And the driving part 20 includes coaxially arranged battery 21, motor 22 and fan blade 23, the battery 21 is used to power the motor 22, the motor 22 is used to drive the fan blade 23 to rotate to generate airflow, the hub ratio of the fan blade 23 is 0.28-0.36, and the distance between the end surface of the motor 22 and the end surface of the fan blade 23 is between 30-60mm.

[0035] And the airflow part 30 includes coaxially arranged current collector 31 and stator guide vane wind cylinder 32, the current collector 31 includes coaxially arranged current collector main body 311 and duct 314, the diameter of the duct 314 is between 60-85mm, the current collector main body 311 is provided with guide plate 312, the guide plate 312 is provided with fixing seat 313, the fixing seat 313 is used to connect the motor 22, the fixing seat 313 is coaxially arranged with the duct 314, and correspondingly the stator guide vane wind cylinder 32 is used to discharge the gas of the current collector 31, the stator guide vane wind cylinder 32 includes outer cylinder 321, cone 322 contained in the outer cylinder 321 and air diffuser 323 arranged between the cone 322 and the outer cylinder 321, and the stator guide vane wind cylinder 32 is provided with baffle 33 at one end of the communication towards the blowing pipe 13.

[0036] Wherein the shaft body of the motor 22 penetrates through the current collector 31 and is connected with the fan blade 23, the motor 22 and the fan are respectively located on the opposite sides of the current collector 31, and the fan blade 23 is located close to the stator guide vane wind cylinder 32.

[0037] Here, the air inlet cover 12 is connected with the current collector 31, that is, the current collector 31 is fixedly connected through the air inlet cover 12, and the blowing pipe 13 is coaxially arranged at the rear end of the stator guide vane wind cylinder 32, the blowing pipe 13 is a straight wind cylinder, the air inlet end of the straight wind cylinder is inserted into the holding shell 11 and communicates with the stator guide vane wind cylinder 32.

[0038] And the battery 21 is connected with the holding shell 11 and close to the air inlet cover 12, the battery 21 and the motor 22 are coaxially arranged, which is convenient for heat dissipation of the two.

[0039] As shown in Figure 5 The fixing seat 313 is provided with a plurality of waist-shaped holes 3131, the waist-shaped holes 3131 correspond to the positions of the connecting holes 221 on the motor 22, and the connection and fixation between the motor 22 and the fixing seat 313 are realized through locking members such as bolts, the structure of the waist-shaped hole 3131 can adapt to different sizes of the motor 22 within a certain range, and the replacement and installation of different sizes of the motor 22 are facilitated.

[0040] Embodiment 2

[0041] As shown in Figure 6The difference between the embodiment 1 and the embodiment 2 is that, in the embodiment 2, the blowing pipe 13 is a siphon air duct, a channel for inhaling external air is formed between the air inlet end of the siphon air duct and the outer wall of the holding shell 11, the siphon air duct is communicated with the stator guide vane air duct 32, the diameter of the siphon air duct is between 90-110mm, and the distance between the air inlet of the siphon air duct and the air blade end surface is between 80-180mm.

[0042] The embodiments shown in the examples, the embodiments and the special forms have been shown and explained in detail in the drawings and the foregoing description, and should also be considered as illustrative rather than limiting. The explanation of the special features in one embodiment does not mean that those special features are necessarily limited to that one embodiment. The features of one embodiment can be used in combination with the features of other embodiments, which can be understood by those of ordinary skill in the art, whether explicitly so explained or not. The exemplary embodiments have been shown and explained, and all changes and modifications falling within the spirit of the present application are intended to be protected.

Claims

1. A hand-held leaf blower, characterized in that The utility model relates to a portable air conditioner, including: The casing (10); With the casing (10) is connected drive part (20), drive part (20) includes coaxial line arrangement battery (21), motor (22) and fan blade (23), battery (21) is used to power supply motor (22), motor (22) is used to electric fan blade (23) rotation produces airflow; With drive part (20) is connected airflow part (30), airflow part (30) includes coaxial arrangement flow collector (31) with static guide vane wind cylinder (32), static guide vane wind cylinder (32) is used to discharge flow collector (31) gas; Wherein, the shaft of motor (22) passes through flow collector (31) and is connected with fan blade (23), motor (22) and fan are located opposite both sides of flow collector (31) respectively, and fan blade (23) is located close to static guide vane wind cylinder (32) one side.

2. A hand-held blower as claimed in claim 1, characterized in that The casing (10) includes holding shell (11), air inlet cover (12) and blow pipe (13), the air inlet cover (12) is arranged in the front end in holding shell (11) and is connected with flow collector (31), the rear end of holding shell (11) extends to the outside and is connected with blow pipe (13), the blow pipe (13) is coaxially arranged in the rear end of static guide vane wind cylinder (32).

3. A hand-held blower as claimed in claim 2, characterized in that The blow pipe (13) is a straight wind cylinder, the air inlet end of the straight wind cylinder is inserted into the holding shell (11) and is in communication with the static guide vane wind cylinder (32).

4. A hand-held blower as claimed in claim 2, characterized in that The blow pipe (13) is a siphon wind cylinder, there is a channel between the air inlet end of the siphon wind cylinder and the outer wall of the holding shell (11) for the intake of external air, and the siphon wind cylinder is in communication with the static guide vane wind cylinder (32), the diameter of the siphon wind cylinder is between 90-110mm, and the distance between the air inlet of the siphon wind cylinder and the end surface of the fan blade (23) is between 80-180mm.

5. A hand-held blower as claimed in claim 2, characterized in that The battery (21) is connected with the holding shell (11) and is close to the air inlet cover (12).

6. A hand-held blower as claimed in claim 1, characterized in that The flow collector (31) includes a flow collector body (311) and a duct (314) arranged coaxially, the flow collector body (311) is provided with a flow guide plate (312) inside, the flow guide plate (312) is provided with a fixing seat (313), the fixing seat (313) is used to connect the motor (22), and the fixing seat (313) is coaxially arranged with the duct (314).

7. A hand-held blower as claimed in claim 1, characterized in that The static guide vane wind cylinder (32) includes an outer cylinder body (321), a cone body (322) contained in the outer cylinder body (321), and a wind diffuser plate (323) arranged between the cone body (322) and the outer cylinder body (321), and the static guide vane wind cylinder (32) is provided with a baffle (33) at one end communicating with the blow pipe (13).

8. The handheld blower of claim 1, wherein, The hub ratio of the fan blade (23) is 0.28-0.

36.

9. A hand-held blower as claimed in claim 6, characterized in that The fixing seat (313) is provided with at least one waist-shaped hole (3131) corresponding to the position of the connecting hole (221) on the motor (22).

10. A hand-held blower as claimed in claim 6, characterized in that The distance between the end surface of the motor (22) and the end surface of the fan blade (23) is between 30-60mm, and the diameter of the duct (314) is between 60-85mm.

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