Garden suction and blowing dual-purpose fan

Abstract

The invention relates to the technical field of electric tools, in particular to a garden suction and blowing dual-purpose fan which comprises an electric tool body, an air pipe is detachably arranged on the electric tool body, a partition plate is arranged in the air pipe, the partition plate divides the interior of the air pipe into two independent air channels, namely, an air blowing channel and an air suction channel, and therefore the electric tool has an air suction mode and an air blowing mode; the air head unit is detachably arranged at the end part of the air pipe and comprises a deformable air head and an adjusting part for adjusting the state of the air head; the switching mechanism is used for controlling opening and closing of the air blowing channel and the air suction channel and comprises a switching part, an opening and closing part and a driving part, the switching part is arranged in the air pipe, and the opening and closing part is arranged in the electric tool; the adjusting part and the switching mechanism are arranged in a linkage mode, so that when the air suction mode is switched to, the switching mechanism opens the air suction channel and closes the air blowing channel, and meanwhile an air head flaring of the air head unit is driven to expand the air suction range. And switching to the blowing mode.

Description

Technical Field

[0001] This application relates to the field of power tool technology, and in particular to a garden blower that can be used for both suction and blowing. Background Technology

[0002] With the increasing prevalence of landscaping and municipal maintenance work, the demand for cleaning up debris such as fallen leaves, weeds, dust, and snow is growing. In traditional operations, workers typically need to carry two separate devices: a blower and a vacuum cleaner, to perform blowing and collection work separately. This results in problems such as high equipment purchase costs, inconvenience in carrying, cumbersome switching, and large storage space requirements. In addition, some products on the market with suction and blowing conversion functions have relatively simple structures, usually only switching the airflow direction through a valve. The working nozzle is often of a fixed shape and cannot be adaptively adjusted according to the working mode. In suction mode, the fixed diameter nozzle is prone to reduced collection efficiency due to the limited suction range; in blowing mode, the airflow is not concentrated enough and the wind force is dispersed, affecting the blowing effect.

[0003] This application proposes a garden ventilation fan that can be used for both suction and blowing, thus providing a solution. Application content

[0004] The purpose of this application is to address at least one of the aforementioned technical deficiencies.

[0005] Therefore, one objective of this application is to provide a garden ventilation fan that can be used for both suction and blowing, in order to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of this application provides a garden ventilation and air blowing dual-purpose fan, comprising: a power tool body with a detachable air duct, wherein a partition is provided inside the air duct, the partition dividing the interior of the air duct into two independent air channels, namely an air blowing channel and an air intake channel, so that the power tool has an air intake mode and an air blowing mode; a blower unit, detachably disposed at the end of the air duct, including a deformable blower head and an adjustment part for adjusting the state of the blower head; a switching mechanism for controlling the opening and closing of the air blowing channel and the air intake channel, including a switching part, an opening and closing part, and a driving part, wherein the switching part is disposed inside the air duct, and the opening and closing part is disposed inside the power tool; wherein the adjustment part is linked to the switching mechanism, such that when switching to the air intake mode, the switching mechanism opens the air intake channel and closes the air blowing channel, and simultaneously drives the blower head of the blower unit to widen the air intake range; when switching to the air blowing mode, the switching mechanism closes the air intake channel and opens the air blowing channel, and simultaneously drives the blower head to become flat to concentrate the airflow.

[0007] Preferably, in any of the above embodiments, a protrusion is fixed to the outer wall of the duct, and the protrusion is provided with a receiving groove and a first through hole and a second through hole communicating with the receiving groove; a dust collection pipe is also fixed to the outer wall of the duct, and the dust collection pipe is connected to the air intake duct.

[0008] Preferably, in any of the above embodiments, a filter plate is fixed inside the air intake duct. The filter plate is tangentially arranged to the inner hole of the dust collection pipe. The filter plate is an inclined plate that is inclined downward toward the inside of the air duct, and the angle between its inclination direction and the airflow direction is an acute angle. It is used to block dust and guide it to fall into the dust collection pipe.

[0009] Preferably, in any of the above embodiments, a support block is integrally formed on the partition, and a positioning groove is formed in the support block; a first connecting hole and a second connecting hole are formed on the partition, both the first connecting hole and the second connecting hole are connected to the positioning groove, and the second connecting hole is connected to the first through hole.

[0010] Preferably, according to any of the above embodiments, the fan head includes: a positioning sleeve, detachably mounted on the air duct, the positioning sleeve having an annular groove, a baffle fixed inside the annular groove, a circular hole inside the annular groove, and a reinforcing tube fixed inside the annular groove; an elastic tube head, both ends of which are fixed inside the positioning sleeve; and a rubber connecting end, one end of which is fixed to the elastic tube head, and the other end of which is inside the positioning sleeve.

[0011] Preferably, in any of the above embodiments, the adjusting part includes: an adjusting ring rotatably disposed between the baffle and the annular groove, the adjusting ring having teeth fixed thereon; a support rod rotatably disposed within a circular hole, the support rod having a first gear fixed thereon, the first gear meshing with the teeth, the support rod having a slot; a sliding rod, one end of which is slidably disposed within the reinforcing tube, the other end being fixed to the outer wall of the elastic tube head, the sliding rod having a trigger rod fixed thereon; a first return spring disposed within the reinforcing tube, one end of which is fixed within the annular groove, the other end being fixedly connected to the sliding rod; and at least three driving blocks, evenly fixed in a circumferential array within the adjusting ring, the driving blocks having an inclined surface for engaging the trigger rod.

[0012] Preferably, in any of the above embodiments, the adjusting part further includes: a positioning ring fixed in an annular groove, the support rod rotatably disposed in the positioning ring, and a hemispherical groove provided in the positioning ring; a steel ball slidably disposed in the groove; and a second return spring, one end of which is fixed to the inner wall of the groove, and the other end of which is fixedly connected to the steel ball, the second return spring being used to drive the steel ball to embed into the hemispherical groove.

[0013] Preferably, according to any of the above embodiments, the switching unit includes: a rotating rod rotatably disposed within a first connecting hole, a semi-circular baffle fixed on the rotating rod, the semi-circular baffle rotatably disposed within the air duct, the rotating rod comprising two non-connected segments connected by a planetary gear; a first transmission rod rotatably disposed within a second connecting hole, the first transmission rod and the rotating rod being connected by a first right-angle transmission component; a second transmission rod rotatably disposed within a second through hole, the second transmission rod and the first transmission rod being connected by a second right-angle transmission component; and a third transmission rod, both ends of which are fixed with first universal joints, one of which is detachably connected to a support rod via a first connector, and the other of which is detachably connected to a second transmission rod via a second connector.

[0014] Preferably, in any of the above embodiments, the opening and closing part includes: a support plate, one end of which has a circular groove, and the other side of which has at least three sector-shaped grooves connected to the circular groove; a support ring, rotatably disposed within the circular groove, and at least three sector-shaped baffles fixed on the support ring; a cylindrical rod, rotatably disposed on the power tool body, one end of which extends to the outside of the power tool body, and the other end of which is fixed with a second gear; and a gear ring, disposed within the power tool body, which meshes with the second gear, and the gear ring is fixedly connected to the support ring via a crossbar.

[0015] Preferably, according to any of the above embodiments, the drive unit includes: a positioning shell fixed to the outer shell of the power tool body, wherein a dual-axis motor is fixed inside the positioning shell; a first drive rod rotatably mounted on the positioning shell, one end of the first drive rod being fixed to one output end of the dual-axis motor, and the other end of the first drive rod being detachably connected to a second transmission rod; a second drive rod rotatably mounted on the positioning shell, one end of the second drive rod being fixed to the other output end of the dual-axis motor; and a second universal joint 4305, one end of which is fixed to the second drive rod, and the other end of which is fixedly connected to a cylindrical rod.

[0016] Compared with the prior art, the advantages and beneficial effects of this application are as follows: 1. The blowing and suction functions are integrated into a single device. The internal air duct switching and external fan head shape change can be completed simultaneously through a single drive motor, realizing "one-button" mode switching. The operation is extremely simple and quick, improving the continuity of operation and work efficiency.

[0017] 2. In suction mode, the nozzle automatically changes to an expanded shape, significantly increasing the area of ​​the intake port. This allows for more effective collection of lightweight debris such as fallen leaves and grass clippings over a larger area, improving collection efficiency. In blowing mode, the nozzle automatically changes to a flat shape, which can concentrate and direct the airflow, generating a concentrated airflow with higher wind speed. This is ideal for blowing away debris in corners and crevices or clearing accumulated water and snow, resulting in better cleaning performance.

[0018] Additional aspects and advantages of this application will be partly set forth in the description which follows, and partly will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a perspective view of an embodiment according to this application; Figure 2 This is a schematic diagram of duct connection according to an embodiment of this application; Figure 3 This is a schematic diagram of a baffle explosion according to an embodiment of this application; Figure 4 This is a partial cross-sectional view of the windward side according to an embodiment of this application; Figure 5 According to the embodiments of this application Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic cross-sectional view of the support ring according to an embodiment of this application; Figure 7 This is a schematic diagram of the partition connection according to an embodiment of this application; Figure 8 This is a schematic cross-sectional view of a duct according to an embodiment of this application; Figure 9 This is a schematic cross-sectional view of the partition according to an embodiment of this application; Figure 10 This is a partial cross-sectional schematic diagram of the drive component according to an embodiment of this application; Figure 11 This is a schematic diagram showing the disassembled opening and closing portion according to an embodiment of this application.

[0020] In the diagram: 1. Power tool body; 11. Control switch; 2. Air duct; 21. Partition; 2101. Support block; 22. Protrusion; 23. Dust collection pipe; 24. Filter plate; 3. Air head unit; 31. Air head; 3101. Positioning sleeve; 3102. Baffle; 3103. Elastic tube head; 3104. Rubber connecting end; 32. Adjustment part; 3201. Adjusting ring; 3202. Tooth; 3203. Support rod; 3204. First gear; 3205. Sliding rod; 3206. Trigger rod; 3207. First return spring; 3208. Drive block; 3209. Positioning ring; 3210. Steel ball; 32 11. Second return spring; 4. Switching mechanism; 41. Switching part; 4101. Rotating rod; 4102. Semi-circular baffle; 4103. First transmission rod; 4104. Second transmission rod; 4105. Third transmission rod; 4106. First universal joint; 42. Opening and closing part; 4201. Support plate; 4202. Support ring; 4203. Fan-shaped baffle; 4204. Cylindrical rod; 4205. Second gear; 4206. Gear ring; 43. Drive part; 4301. Positioning shell; 4302. Dual-axis motor; 4303. First drive rod; 4304. Second drive rod; 4305. Second universal joint. Detailed Implementation

[0021] like Figures 1 to 11 As shown, a garden ventilation fan that can be used for both suction and blowing includes a power tool body 1, a duct 2, a blower unit 3, and a switching mechanism 4. The adjustment unit 32 is linked with the switching mechanism 4, so that when switching to the air intake mode, the switching mechanism 4 opens the air intake channel and closes the air blowing channel, and at the same time drives the air head 31 of the air head unit 3 to expand the air intake range. When switching to the blowing mode, the switching mechanism 4 closes the air intake and opens the air blowing channel, while driving the blower head 31 to become a flat mouth shape to concentrate the airflow.

[0022] Furthermore, the power tool body 1 is equipped with a drive motor, and an impeller is fixed at the output end of the drive motor.

[0023] Furthermore, such as Figures 7 to 9 As shown, the air duct 2 is detachably mounted on the power tool body 1, and the air duct 2 is located on the output end of the power tool body 1; The air duct 2 is provided with a partition 21, which divides the interior of the air duct 2 into two independent air channels, namely the blowing channel and the suction channel, so that the power tool has a suction mode and a blowing mode. The outer wall of the air duct 2 is fixed with a protrusion 22, and the protrusion 22 is provided with a receiving groove and a first through hole and a second through hole connected to the receiving groove; The outer wall of the air duct 2 is also fixed with a dust collection pipe 23, which is connected to the air intake duct; A filter plate 24 is fixed inside the air intake duct. The filter plate 24 is tangential to the inner hole of the dust collection pipe 23. The filter plate 24 is an inclined plate that is inclined downward toward the inside of the air duct 2. The angle between its inclination direction and the airflow direction is an acute angle. It is used to block dust and guide it to fall into the dust collection pipe 23. When the dust-laden airflow passes through, the dust particles hit the inclined plate under the action of inertia and are guided to slide down along the plate surface and finally enter the dust collection pipe 23 which is tangential to it. This achieves the initial separation of air and dust, allowing the dust to enter the dust collection pipe 23 and be collected by the detachable dust collection bag on the dust collection pipe 23. The filter plate 24 is used for ventilation and dust blocking; A support block 2101 is integrally formed on the partition 21, and a positioning groove is provided in the support block 2101; The partition 21 has a first connecting hole and a second connecting hole. Both the first connecting hole and the second connecting hole are connected to the positioning groove, and the second connecting hole is connected to the first through hole.

[0024] Furthermore, such as Figures 3 to 6 As shown, the fan head unit 3 is detachably installed at the end of the air duct 2, and includes a deformable fan head 31 and an adjustment part 32 for adjusting the state of the fan head 31. The wind vane 31 includes: The positioning sleeve 3101 is detachably mounted on the air duct 2. The positioning sleeve 3101 has an annular groove, a baffle 3102 is fixed in the annular groove, a round hole is opened in the annular groove, and a reinforcing tube is fixed in the annular groove. The flexible tube head 3103 has both ends fixed inside the positioning sleeve 3101; The rubber connection end 3104 has one end fixed to the elastic tube head 3103 and the other end inside the positioning sleeve 3101. The rubber connection end 3104 is in the form of rubber and is used to follow the deformation and maintain a seal. The adjustment unit 32 includes: An adjusting ring 3201 is rotatably disposed between the baffle 3102 and the annular groove, and teeth 3202 are fixed on the adjusting ring 3201; A support rod 3203 is rotatably disposed in a circular hole. A first gear 3204 is fixed on the support rod 3203. The first gear 3204 meshes with teeth 3202. The support rod 3203 has slots, and a plurality of slots are arranged in a circumferential array on the periphery of the support rod 3203. The sliding rod 3205 has one end slidably disposed inside the reinforcing tube, and the other end is fixed to the outer wall of the elastic tube head 3103. A trigger rod 3206 is fixed on the sliding rod 3205. The first return spring 3207 is located inside the reinforcing tube, with one end fixed in the annular groove and the other end fixedly connected to the sliding rod 3205. At least three drive blocks 3208 are provided and are evenly fixed in a circular array within the adjusting ring 3201. Each drive block 3208 has an inclined surface, which is used to cooperate with the trigger rod 3206. The drive block 3208 is hollowed out in the middle to avoid obstruction. Also includes: The positioning ring 3209 is fixed in the annular groove. The support rod 3203 is rotatably disposed in the positioning ring 3209. The positioning ring 3209 has hemispherical grooves. The number of hemispherical grooves corresponds to the number of slot holes and is distributed in a circumferential array on the inner wall of the positioning ring 3209. Steel ball 3210, which can be slidably set in the slot; The second return spring 3211 has one end fixed to the inner wall of the slot and the other end fixedly connected to the steel ball 3210. The second return spring 3211 is used to drive the steel ball 3210 to be embedded in the hemispherical slot. The steel ball 3210 and the second return spring 3211 work together to lock the support rod 3203, so that the support rod 3203 is not affected by the vibration of the power tool body 1 when it is not adjusted.

[0025] Furthermore, the switching mechanism 4 is used to control the opening and closing of the air blowing duct and the air intake duct, and includes a switching part 41, an opening and closing part 42 and a driving part 43, wherein the switching part 41 is located inside the air duct 2 and the opening and closing part 42 is located inside the power tool. Specifically, like Figure 9 As shown, the switching part 41 includes: a rotating rod 4101, which is rotatably disposed in the first connecting hole. A semi-circular baffle 4102 is fixed on the rotating rod 4101. The semi-circular baffle 4102 is rotatably disposed in the air duct 2. The rotating rod 4101 is configured as two non-connected segments, and the two segments are connected by a planetary gear. The first transmission rod 4103 is rotatably disposed in the second connecting hole, and the first transmission rod 4103 is connected to the rotation via a first right-angle transmission component. The second transmission rod 4104 is rotatably disposed in the second through hole, and the second transmission rod 4104 and the first transmission rod 4103 are connected by a second right-angle transmission component. Both the first right-angle transmission component and the second right-angle transmission component mentioned above can be implemented using helical bevel gears; The third transmission rod 4105 has a first universal joint 4106 fixed at both ends. One of the first universal joints 4106 is detachably connected to the support rod 3203 through a first connector, and the other first universal joint 4106 is detachably connected to the second transmission rod 4104 through a second connector. like Figure 11 As shown, the opening / closing portion 42 includes: A support plate 4201 has a circular groove at one end and at least three sector-shaped grooves on the other side, which are connected to the circular groove. The support ring 4202 is rotatably disposed in the circular groove, and at least three sector-shaped baffles 4203 are fixed on the support ring 4202; The cylindrical rod 4204 is rotatably mounted on the power tool body 1, with one end extending to the outside of the power tool body 1 and the other end fixed with the second gear 4205. A toothed ring 4206 is disposed inside the power tool body 1. The toothed ring 4206 meshes with the second gear 4205. The toothed ring 4206 is fixedly connected to the support ring 4202 through a crossbar. like Figure 10 As shown, the drive unit 43 includes: The positioning shell 4301 is fixed to the outer shell of the power tool body 1. A dual-axis motor 4302 is fixed inside the positioning shell 4301. The dual-axis motor 4302 is controlled by a PLC control chip. The first drive rod 4303 is rotatably mounted on the positioning housing 4301. One end of the first drive rod 4303 is fixed to one of the output ends of the dual-axis motor 4302, and the other end of the first drive rod 4303 is detachably connected to the second transmission rod 4104. The second drive rod 4304 is rotatably mounted on the positioning housing 4301, and one end of the second drive rod 4304 is fixed to the other output end of the dual-axis motor 4302. The second universal joint 4305 has one end fixed to the second drive rod 4304 and the other end fixedly connected to the cylindrical rod 4204; The planetary gear in the switching part 41 is used to level the movement speed between the switching part 41, the opening and closing part 42 and the adjusting part 32, and to make the movement time of the adjusting ring 3201 and the support ring 4202, which move one-third of a turn, synchronize with the movement of the baffle 3102, which moves half a turn. The drive unit 43 is controlled by a control switch 11 installed on the handle of the power tool body 1.

[0026] In the above description, the detachable connection between each transmission rod and each drive rod is achieved by bolt connection, which is a conventional setting and is not described in detail.

[0027] In this application, all rotating connections are equipped with rotating seals to ensure the normal operation of the device.

[0028] A garden ventilation fan that can be used for both suction and blowing functions works on the following principle: 1) When the user switches the tool to the "inhalation" mode, the trigger signal is transmitted to the dual-axis motor 4302 of the drive unit 43. The first output end of the dual-axis motor 4302 transmits power to the second transmission rod 4104 of the switching unit 41 through the first drive rod 4303. The second output end of the dual-axis motor 4302 transmits power to the cylindrical rod 4204 of the opening and closing unit 42 through the second drive rod 4304 and the second universal joint 4305. The second transmission rod 4104 of the switching unit 41 drives the first transmission rod 4103 to rotate through the second right-angle transmission component. The first transmission rod 4103 drives the rotating rod 4101 and the semi-circular baffle 4102 fixed thereto to rotate through the first right-angle transmission component, so that the blowing channel is closed and the suction channel is opened. At the same time, the power of the second transmission rod 4104 is transmitted to the support rod 3203 of the adjustment unit 32 through the third transmission rod 4105 and the first universal joint 4106. The support rod 3203 drives the first gear 3204 on it to rotate, which drives the teeth 3202 on the adjusting ring 3201 that meshes with it, so that the adjusting ring 3201 rotates in the annular groove. The rotating adjusting ring 3201 drives the multiple driving blocks 3208 on its inner side to rotate. The inclined surface on the driving block 3208 drives the trigger rod 3206. The trigger rod 3206 drives the elastic tube head 3103 to move, causing it to expand radially. At the same time, the sliding rod 3205 compresses the first return spring 3207. The cylindrical rod 4204 of the opening and closing part 42 rotates under the power drive, which drives the second gear 4205 at its end to rotate. The second gear 4205 drives the gear ring 4206 that meshes with it to rotate. The gear ring 4206 drives the support ring 4202 to rotate in the circular groove of the support plate 4201 through the crossbar. The multiple fan-shaped baffles 4203 fixed on the support ring 4202 rotate synchronously, closing the fan-shaped groove, so that one end of the entire air duct is blocked and the other end is open, thus changing from blowing to suction. At this time, the main body 1 of the power tool is working and generating suction. The airflow carries leaves and dust into the flared air inlet 31 and passes through the air intake. When the airflow passes through the filter plate 24 (an inclined plate), under the action of inertia, the heavier particles are blocked and guided along the plate surface, falling tangentially into the dust collection pipe 23, thus achieving air-dust separation.

[0029] 2) Working principle of the blowing mode: When the user switches the tool to "blowing" mode, the dual-axis motor 4302 of the drive unit 43 receives the rotation signal and the rotation direction remains unchanged. The power transmission path is the same as the intake mode, but the baffle 3102 closes the intake channel and opens the blowing channel, and the fan-shaped baffle 4203 no longer blocks the fan-shaped groove, so that both ends of the entire air duct are open, thus switching to the blowing mode. The rotational power is transmitted to the support rod 3203 of the adjustment section 32, causing the adjustment ring 3201 to rotate. The drive rod passes over the trigger rod 3206 and drives the sliding rod 3205 to reset under the force of the first reset spring 3207. Then, under the combined action of the elastic restoring force of the elastic tube head 3103 and the first reset spring 3207, the elastic tube head 3103 is radially compressed, restoring or becoming a flat mouth shape. At this time, the main body 1 of the power tool is working and generates a blowing force, which is blown out from the flat nozzle 31. Due to the reduced outlet cross-sectional area, the airflow is accelerated and concentrated, forming a powerful blowing airflow, which is used to clean gaps and blow away debris.

[0030] 3) This garden ventilation and blowing fan uses a highly integrated mechanical linkage system to precisely and synchronously convert the single rotational output of the drive unit 43 (dual-shaft motor 4302) into two sets of actions: the shape change of the fan head 31 and the switching of the air duct opening and closing state. This makes the fan head 31 automatically expand to increase the range when inhaling and automatically flatten to increase the force when blowing. With one click, users can switch the airflow and all internal actions are completed automatically, without the need to manually adjust the fan head 31 or the air duct. The main fan motor only needs to operate at constant speed or variable speed in one direction, resulting in high system stability and reliability; This is precisely the ingenious engineering realization of the core idea of ​​"achieving functional switching without changing the motor drive direction, only through channel switching and the deformation linkage of the fan head 31".

Claims

1. A garden ventilation fan that combines suction and blowing, characterized in that: include: The power tool body has a detachable air duct. The air duct is equipped with a partition that divides the interior of the air duct into two independent air channels: a blowing channel and a suction channel, so that the power tool has a suction mode and a blowing mode. The fan head unit is detachably installed at the end of the duct, and includes a deformable fan head and an adjustment part for adjusting the state of the fan head; A switching mechanism for controlling the opening and closing of the air blowing duct and the air intake duct, comprising a switching part, an opening and closing part, and a driving part, wherein the switching part is located inside the air duct, and the opening and closing part is located inside the power tool; The adjustment unit is linked to the switching mechanism, so that when switching to the air intake mode, the switching mechanism opens the air intake channel and closes the air blowing channel, while driving the fan head unit to expand the air intake range. When switching to the blowing mode, the switching mechanism closes the air intake and opens the air blowing channel, while simultaneously driving the blower head to become a flat opening to concentrate the airflow.

2. The garden ventilation fan according to claim 1, characterized in that: The outer wall of the air duct is fixed with a protrusion, and the protrusion is provided with a receiving groove and a first through hole and a second through hole connected to the receiving groove; A dust collection pipe is also fixed to the outer wall of the air duct, and the dust collection pipe is connected to the air intake duct.

3. A garden ventilation fan with both suction and blowing functions according to claim 1, characterized in that: A filter plate is fixed inside the air intake duct. The filter plate is tangential to the inner hole of the dust collection pipe. The filter plate is an inclined plate that is inclined downward toward the inside of the air duct. The angle between its inclination direction and the airflow direction is an acute angle. It is used to block dust and guide it to fall into the dust collection pipe.

4. A garden ventilation fan with both suction and blowing functions according to claim 2, characterized in that: The partition plate has an integrally formed support block, and the support block has a positioning groove inside; The partition plate has a first connecting hole and a second connecting hole. Both the first connecting hole and the second connecting hole are connected to the positioning groove, and the second connecting hole is connected to the first through hole.

5. A garden ventilation fan with both suction and blowing functions according to claim 1, characterized in that: The winds include: A positioning sleeve is detachably mounted on the air duct. The positioning sleeve has an annular groove, a baffle is fixed inside the annular groove, a round hole is opened inside the annular groove, and a reinforcing tube is fixed inside the annular groove. The flexible tube head has both ends fixed inside the positioning sleeve; The rubber connection end has one end fixed to the elastic tube head, and the other end inside the positioning sleeve.

6. A garden ventilation fan with both suction and blowing functions according to claim 5, characterized in that: The adjustment unit includes: An adjusting ring is rotatably disposed between the baffle and the annular groove, and teeth are fixed on the adjusting ring; A support rod is rotatably disposed in a circular hole. A first gear is fixed on the support rod, and the first gear meshes with the teeth. A slot is provided on the support rod. A sliding rod, one end of which is slidably disposed inside the reinforcing tube, and the other end of which is fixed to the outer wall of the elastic tube head, and a trigger rod is fixed on the sliding rod; The first return spring is located inside the reinforcing tube, with one end fixed in the annular groove and the other end fixedly connected to the sliding rod. At least three drive blocks are provided and are evenly fixed in a circular array within the adjusting ring. Each drive block has an inclined surface, which is used to engage with the trigger rod.

7. A garden ventilation fan with both suction and blowing functions according to claim 6, characterized in that: The adjustment unit further includes: A positioning ring is fixed in an annular groove, and the support rod is rotatably disposed in the positioning ring. A hemispherical groove is provided in the positioning ring. The steel ball is slidably positioned inside the slot. The second return spring has one end fixed to the inner wall of the slot and the other end fixedly connected to the steel ball. The second return spring is used to drive the steel ball to embed into the hemispherical slot.

8. A garden ventilation fan with both suction and blowing functions according to claim 4, characterized in that: The switching unit includes: A rotating rod is rotatably disposed in the first connecting hole. A semi-circular baffle is fixed on the rotating rod. The semi-circular baffle is rotatably disposed in the air duct. The rotating rod is composed of two non-connected segments, which are connected by a planetary gear. The first transmission rod is rotatably disposed in the second connecting hole, and the first transmission rod and the rotation are connected by a first right-angle transmission component. The second transmission rod is rotatably disposed in the second through hole, and the second transmission rod is connected to the first transmission rod by a second right-angle transmission component. The third transmission rod has a first universal joint fixed at both ends. One of the first universal joints is detachably connected to the support rod through a first connector, and the other first universal joint is detachably connected to the second transmission rod through a second connector.

9. A garden ventilation fan with both suction and blowing functions according to claim 8, characterized in that: The opening / closing part includes: A support plate, one end of which has a circular groove, and the other side of which has at least three sector-shaped grooves connected to the circular groove; A support ring is rotatably disposed within the circular groove, and at least three sector-shaped baffles are fixed on the support ring; A cylindrical rod is rotatably mounted on the power tool body, with one end extending to the outside of the power tool body and the other end fixed with a second gear. A toothed ring is disposed inside the power tool body. The toothed ring meshes with a second gear, and the toothed ring is fixedly connected to a support ring via a crossbar.

10. A garden ventilation fan with both suction and blowing functions according to claim 9, characterized in that: The drive unit includes: A positioning shell is fixed to the outer shell of the power tool body, and a dual-axis motor is fixed inside the positioning shell; The first drive rod is rotatably mounted on the positioning housing. One end of the first drive rod is fixed to one of the output ends of the dual-axis motor, and the other end of the first drive rod is detachably connected to the second transmission rod. The second drive rod is rotatably mounted on the positioning housing, and one end of the second drive rod is fixed to the other output end of the dual-axis motor. The second universal joint 4305 has one end fixed to the second drive rod and the other end fixedly connected to the cylindrical rod.

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