A blow and suction fan duct structure

Abstract

This application discloses a blower / vacuum fan duct structure, including a base and a duct assembly. The duct assembly includes a blower and a suction tube, with at least one connecting structure between them. The base has a sliding groove, and the blower has a slider for sliding within the groove. A locking mechanism is provided between the groove and the slider to lock the slider. An adjustable-length rake assembly is also installed between the blower and suction tubes. The advantages of this application are: the duct assembly is slidably connected to the base, and a locking mechanism allows adjustment of the slider position according to the actual terrain, making the blower and suction tubes fit the ground more closely; the rake assembly installed between the blower and suction tubes is adjustable, allowing for length adjustment to suit different terrains and remove tightly adhered debris from the ground, thereby improving the working efficiency of the blower / vacuum fan. This utility model features simple operation and high working efficiency.

Description

Technical Field

[0001] This application relates to the field of environmental sanitation and cleaning technology, and in particular to a blower duct structure for a blower. Background Technology

[0002] With urbanization, the proportion of green space in cities is constantly increasing, with flowers, trees, and shrubs planted in parks and along roadsides. During seasonal changes or pruning, the ground is often covered with leaves and scraps of paper, requiring the use of blowers to remove these debris. Traditional blowers typically have a duct system, consisting of an air intake pipe and an air intake pipe. The air intake pipe is used to blow up tightly stuck leaves, while the air intake pipe is used to absorb them. However, when leaves fall deep into the grass or are firmly attached to the ground, the air intake alone is insufficient to remove them. Therefore, improvements to existing blowers are necessary.

[0003] To remove stuck leaves, rakes are installed on the blower to shovel them off the ground. However, in existing technology, the rakes are generally installed inside the blower duct. While this achieves the purpose of shoveling leaves, it also affects the airflow of the blower duct, thus reducing the blower's efficiency in adsorbing leaves. Furthermore, the rakes in existing technology are mostly fixed, which makes it difficult to make the rakes fit the ground properly on uneven surfaces, resulting in incomplete leaf removal. Utility Model Content

[0004] One of the objectives of this application is to provide a blower duct structure that can solve at least one of the defects in the above-mentioned background art.

[0005] To achieve at least one of the above objectives, the technical solution adopted in this application is as follows: a blower / suction fan duct structure, comprising a base and a duct assembly, wherein the duct assembly includes a blower and a suction fan, and at least one connecting structure is provided between the blower and the suction fan; a sliding groove is provided on the base, and a slider for sliding within the sliding groove is provided on the blower, and a locking mechanism for locking the slider is provided between the sliding groove and the slider; an adjustable-length rake assembly is also installed between the blower and the suction fan.

[0006] With the above settings, users can change the position of the slider in the groove according to actual needs, so that the suction and blower can fit closer to the ground. When it is necessary to clean the concave ground, the slider can be pushed forward and the position of the slider can be fixed by the locking mechanism, thereby reducing the distance between the nozzles of the blower and suction and the ground, which helps to improve the working efficiency of the blower and suction. For some debris that is difficult to clean (such as leaves and paper), it can be shoveled out of the ground by the rake assembly, and then the suction can be used to clean the debris. In addition, the adjustable function of the rake assembly can further improve the flexibility of rakeing.

[0007] Preferably, there are two connecting structures, which are respectively arranged at the front and rear ends of the suction tube. Each connecting structure includes a first connecting block and a second connecting block. The first connecting block is disposed on the suction tube, and the second connecting block is disposed on the blower tube. The second connecting block has a groove, and the first connecting block has a protrusion for engaging the groove. This arrangement allows the suction tube and blower tube to be fixedly connected by the connection of the first and second connecting blocks. During transportation and maintenance, the suction tube and blower tube can be disassembled, which improves space utilization during storage and reduces the cost of maintenance and parts replacement.

[0008] Preferably, the grass-raking assembly includes a mounting base, the upper and lower end faces of which are curved, and the curvature of each curve matches the contour of its corresponding suction or blower. The mounting base has a mounting groove, and a first connecting block and a second connecting block near the base engage with the mounting groove. This design allows the grass-raking assembly to be lower, ensuring a closer fit to the ground; the engagement of the first and second connecting blocks also limits the position of the mounting base.

[0009] Preferably, the mounting base consists of two mating U-shaped seats, wherein a positioning block is provided on the U-shaped seat closer to the second connecting block, and a positioning groove for engaging the positioning block is provided on the second connecting block. This arrangement further improves the convenience of disassembly and installation of the device. During installation, the corresponding first and second connecting blocks are first connected, and then the two U-shaped seats are engaged along the periphery of the connecting blocks to fix the mounting base in place.

[0010] Preferably, the raking assembly further includes a movable frame and rake teeth. The movable frame is slidably connected to the mounting base, and the rake teeth are mounted on the movable frame. An adjustment component is provided between the movable frame and the mounting base. This configuration allows the moving distance of the movable frame to be adjusted using the adjustment component as needed, thereby making the rake teeth more closely conform to the ground.

[0011] Preferably, the adjusting component includes a rod, the mounting base has multiple slots, and the movable frame has through holes. The rod passes through the through holes and extends into the corresponding slots. With this configuration, when the distance between the rake teeth is unsuitable, the rod can be pulled out, the through holes aligned with the corresponding slots, and then the rod can be inserted into the corresponding slots to change the distance between the rake teeth and the ground.

[0012] Preferably, the locking mechanism includes locking teeth and locking slots. The locking teeth are disposed on the base, and there are multiple locking slots spaced apart on the slider. The locking teeth extend into the corresponding locking slots to lock the position of the slider. With this configuration, the slider can be locked by the locking teeth and locking slots, and the position of the air duct assembly can be changed by inserting the locking teeth into different locking slots.

[0013] Preferably, the base is provided with an elastic plate, one end of which is fixedly connected to the base, and the other end is connected to a pedal; the locking teeth are disposed on the elastic plate, and the pedal is used to drive the elastic plate to move the locking teeth (100) into or out of the locking slot. With this configuration, when the user needs to adjust the position of the slider, they only need to step on the pedal to bend the elastic plate and move the locking teeth out of the locking slot; when the slider is adjusted to the appropriate position, the user releases the pedal to allow the elastic plate to return to its original position, which allows the locking teeth to extend into the corresponding locking slot to lock the slider.

[0014] Preferably, the base is further provided with a limiting block, which is used to limit the rotation angle of the pedal. This arrangement ensures that the user does not excessively step on the pedal, and prevents the elastic plate from breaking due to exceeding its own load when bending.

[0015] Preferably, the base has outwardly extending axles on both sides, and wheels are mounted on the axles. This configuration allows the blower / vacuum nozzle to move by mounting the wheels on the axles, further improving its portability.

[0016] Compared with the prior art, the beneficial effects of this application are as follows:

[0017] The air duct assembly is slidably connected to the base, and a locking mechanism is provided between the two. During use, the relative position of the air duct assembly and the base can be changed according to the actual terrain to make the suction and blower more in line with the ground. The grass rake assembly installed between the blower and the suction can remove tightly stuck debris from the ground, thereby improving the working efficiency of the blower and suction. The grass rake assembly can also be adjusted in length to suit different terrains.

[0018] The blower and the suction tube are fixed together by the connection of the first connecting block and the second connecting block. The suction tube and the blower can be quickly disassembled during transportation and maintenance, which can improve the space utilization during storage and reduce the cost of maintenance and parts replacement. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the blower / suction fan in this application.

[0020] Figure 2 This is a schematic diagram of the base structure in this application.

[0021] Figure 3 This is a schematic diagram of the structure of the hair dryer used in this application. Figure 1 .

[0022] Figure 4 This is a schematic diagram of the suction duct in this application.

[0023] Figure 5 This is a schematic diagram of the grass-raking component in this application.

[0024] Figure 6 This is an exploded structural diagram of the structural mounting base in this application.

[0025] Figure 7 This is a schematic diagram of the structure of the hair dryer used in this application. Figure 2 .

[0026] In the diagram: 1. Base; 11. Slide groove; 12. Limiting block; 13. Shaft; 100. Clamping tooth; 101. Elastic plate; 102. Pedal; 2. Blower; 21. Slider; 22. Second connecting block; 200. Slot; 220. Groove; 221. Positioning groove; 3. Suction tube; 31. First connecting block; 300. Insert rod; 301. Stop block; 310. Protrusion; 4. Rake assembly; 41. Mounting seat; 42. Moving frame; 43. Rake teeth; 400. Positioning block; 410. Slot; 411. Mounting groove; 420. Housing; 5. Wheel. Detailed Implementation

[0027] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0029] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0030] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0031] One aspect of this application provides a blower / suction fan duct structure, such as... Figures 1-4 As shown, one preferred embodiment includes a blower assembly comprising a blower 2 and a suction tube 3, with at least one connecting structure between the blower 2 and the suction tube 3. A groove 11 is provided on the base 1, and a slider 21 that slides in cooperation with the groove 11 is provided on the blower 2. The distance between the blower assembly and the ground can be changed by altering the position of the slider 21 within the groove 11. Furthermore, a locking mechanism is provided between the groove 11 and the slider 21 to lock the slider 21. When cleaning a concave surface, the slider 21 can be pushed forward, and its position fixed by the locking mechanism, thereby reducing the distance between the inlets of both the blower 2 and the suction tube 3 and the ground, further improving the working efficiency of the blower / suction fan. A grass-raking assembly 4 is also installed between the blower 2 and the suction tube 3. The length of the grass-raking assembly 4 is adjustable to improve its flexibility and ensure that it can fit as close to the ground as possible. For some difficult-to-sweep debris (such as leaves, paper, etc.), the grass-raking assembly 4 can be used to shovel it out of the ground, and then the suction tube 3 can be used to sweep the debris.

[0032] Specifically, such as Figure 1 , Figure 3 and Figure 4 As shown, there are two connecting structures, located at the front and rear ends of the suction tube 3, respectively. Each connecting structure includes a first connecting block 31 and a second connecting block 22. The first connecting block 31 is located on the suction tube 3, and the second connecting block 22 is located on the blower tube 2. The second connecting block 22 has a groove 220, and the first connecting block 31 has a protrusion 310 that mates with the groove 220. In use, the first connecting block 31 and the second connecting block 22 are first aligned, and then the protrusion 310 is inserted into the groove 220 to connect the blower tube 2 and the suction tube 3.

[0033] Of course, in order to further improve the connection stability of the first connecting block 31 and the second connecting block 22, threaded holes can also be provided in the protrusion 310 and the groove 220, and then a screw can be used for more secure positioning.

[0034] It is understandable that the suction tube 3 and the blower tube 2 are detachably connected by the connection and cooperation of the first connecting block 31 and the second connecting block 22. When the blower is transported and maintained, the suction tube 3 and the blower tube 2 can be separated, which can improve the space utilization during storage and reduce the cost of maintenance and parts replacement.

[0035] It should be noted that the connection structure in this application is not limited to the connection between the first connecting block 31 and the second connecting block 22; in some other embodiments, the suction tube 3 and the blower tube 2 can also be connected by other connection structures such as snap-fit ​​or interference fit.

[0036] In this embodiment, as Figure 1 and Figure 5 As shown, the grass-raking assembly 4 includes a mounting base 41, and the cross-sections of the blower 2 and the suction tube 3 are elliptical. In order to better fit the mounting base 41 with the blower 2 and the suction tube 3, both the upper and lower end faces of the mounting base 41 are curved, and the curvature of each is matched with the contour of the corresponding suction tube 3 or blower 2, thereby reducing the probability of deformation of the suction tube 3 and the blower 2 when subjected to lateral tensile force.

[0037] It should be noted that the cross-sectional dimensions of the blower 2 and the suction tube 3 in this application are not the same. For the suction tube 3, the size of the opening near the ground is slightly larger than the size of the opening farther from the ground. This not only increases the airflow of the suction tube 3 but also allows it to suck in larger debris. For the blower 2, the cross-section is significantly smaller than that of the suction tube 3. This is mainly to concentrate the air inside the blower 2, ensuring that it can blow debris off the ground. In addition, the size of the opening near the ground on the blower 2 is slightly smaller than the size of the opening farther from the ground, which further enhances the airflow of the blower 2.

[0038] Specifically, such as Figure 4As shown, the mounting base 41 is provided with a mounting groove 411. A pair of connecting blocks near the base 1 are inserted into the mounting groove 411. On the one hand, the mounting groove 411 can stabilize the connection between the first connecting block 31 and the second connecting block 22, preventing the blower 2 and the suction tube 3 from shifting under external force. On the other hand, it can fix the mounting base 41 between the blower 2 and the suction tube 3. The first connecting block 31 and the second connecting block 22, after being connected, play a mutual limiting role with the mounting base 41, further reducing the number of parts of the blower and suction fan. Designing the mounting base 41 between the blower 2 and the suction tube 3 allows the position of the grass-raking assembly 4 to be lower, ensuring that the grass-raking assembly 4 can fit more closely to the ground.

[0039] Furthermore, such as Figure 6 and Figure 7 As shown, the mounting base 41 consists of two mating U-shaped seats. A positioning block 400 is provided on the U-shaped seat closest to the second connecting block 22, and a positioning groove 221 is provided on the second connecting block 22 to engage with the positioning block 400, further improving the convenience of disassembly and installation of the device. During installation, first connect the corresponding first connecting block 31 and second connecting block 22. Then, engage the two U-shaped seats along the periphery of the connecting blocks, ensuring that the positioning block 400 extends into the positioning groove 221. Finally, use fasteners to fix the two U-shaped seats, thus fixing the mounting base 41 between the blower 2 and the suction tube 3.

[0040] It should be noted that most of the grass-raking components 4 on existing blowers do not have an adjustment function. They work well on flat or gently sloping surfaces, but when the surface is steeply sloping, the grass-raking components 4 cannot adhere to the surface, thus reducing the cleaning effect of the blower.

[0041] In view of the above situation, in some embodiments of this application, such as Figure 1 and Figure 5 As shown, the raking assembly 4 also includes a movable frame 42 and rake teeth 43. The movable frame 42 is slidably connected to the mounting base 41, and the rake teeth 43 are mounted on the movable frame 42. An adjustment component is provided between the movable frame 42 and the mounting base 41. The user can adjust the moving distance of the movable frame 42 using the adjustment component according to actual needs, thereby making the rake teeth 43 fit the ground more closely.

[0042] Specifically, such as Figure 5 and Figure 6As shown, the adjustment component includes a rod 300. The mounting base 41 has multiple slots 410 arranged sequentially along its long side. The moving frame 42 has through holes, through which the rod 300 passes and extends into the corresponding slot 410. When the distance of the rake teeth 43 is unsuitable, pulling the rod 300 disengages it from the groove 220. At this time, the moving frame 42 is in a free-sliding state. The user can move the moving frame 42 to the desired position and then insert the rod 300 into the corresponding slot 410 to fix the moving frame 42 in that position.

[0043] In addition, in some embodiments of this application, such as Figure 5 and Figure 6 As shown, to prevent the insertion rod 300 from falling off during operation, a housing 420 is installed on the side of the movable frame 42. The housing 420 is used to limit the pull-out distance of the insertion rod 300. The housing 420 is hollow inside and has a mounting hole. A stop 301 is provided on the insertion rod 300, wherein the size of the stop 301 is larger than the size of the mounting hole. During installation, the insertion rod 300 can be inserted into the groove 220, and then the housing 420 can be fitted onto the movable frame 42, with the other end of the insertion rod 300 extending to the outside through the mounting hole; the stop 301 ensures that the insertion rod 300 is always inside the housing 420.

[0044] Of course, considering ease of operation, a spring can also be installed between the housing 420 and the stop 301 to improve the insertion stability of the insertion rod 300 through the spring force. When the user pulls the insertion rod 300, the spring compresses and stores power; when the moving frame 42 moves on the mounting base 41, the insertion rod 300 is continuously compressed by the supporting force of the side of the moving frame 42; when the insertion rod 300 reaches the groove 220, the spring automatically extends the insertion rod 300 into the groove 220 under its own elastic force. In addition, a pull ring can be installed on the insertion rod 300 to further improve the user's comfort when pulling the insertion rod 300.

[0045] It should be noted that the manufacturer can adjust the number and spacing of the grooves 220 on the moving frame 42 according to the user's needs. The adjustment component is not fixed as the insertion rod 300. In some other embodiments, the adjustment component can also be set as an adjustment plate, and the position of the moving frame 42 can be limited by setting mutually cooperating limiting structures on the moving frame 42 and the base 1.

[0046] In this embodiment, as Figure 2 and Figure 3As shown, the locking mechanism includes a locking tooth 100 and a locking slot 200. The locking tooth 100 is disposed on the base 1, and there are multiple locking slots 200, which are spaced apart on the slider 21. When the locking tooth 100 extends into the corresponding locking slot 200, the position of the slider 21 can be locked, thereby changing the position of the air duct assembly on the base 1.

[0047] Furthermore, such as Figure 2 As shown, a flexible plate 101 is provided on the base 1. One end of the flexible plate 101 is fixedly connected to the base 1, and the other end is connected to a pedal 102. A locking tooth 100 is provided on the flexible plate 101. The pedal 102 is used to drive the flexible plate 101 to move the locking tooth 100 into or out of the locking groove 200. When the user needs to adjust the position of the slider 21, he only needs to step on the pedal 102 to make the flexible plate 101 bend and move the locking tooth 100 out of the locking groove 200. When the slider 21 is adjusted to the appropriate position, the user releases the pedal 102 to allow the flexible plate 101 to return to its original position, so that the locking tooth 100 can extend into the corresponding locking groove 200 to lock the slider 21.

[0048] It should be noted that, due to the limited bending range of the elastic plate 101, if the user steps on the pedal 102 with excessive force, the elastic plate 101 may bend excessively and break, thereby increasing the risk of damage to the blower.

[0049] To address the aforementioned problems, in some embodiments of this application, such as... Figure 2 As shown, a limiting block 12 is also provided on the base 1. The limiting block 12 is used to limit the rotation angle of the pedal 102. When the user steps on the pedal 102 with greater force, the limiting block 12 can support the pedal 102, thereby preventing the elastic plate 101 from breaking due to excessive bending and exceeding its own load.

[0050] In this embodiment, as Figure 1 and Figure 2 As shown, shafts 13 extend outward from both sides of the base 1, and wheels 5 are mounted on the shafts 13. By mounting the wheels 5 on the shafts 13, the blower / vacuum nozzle 3 can be moved, further improving the portability of the blower / vacuum nozzle.

[0051] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A blower / suction fan duct structure, comprising a base (1) and a duct assembly, characterized in that, The air duct assembly includes a blower (2) and a suction tube (3), and at least one connection structure is provided between the blower (2) and the suction tube (3); a sliding groove (11) is provided on the base (1), and a slider (21) for sliding in the sliding groove (11) is provided on the blower (2), and a locking mechanism for locking the slider (21) is provided between the sliding groove (11) and the slider (21); an adjustable length grass rake assembly (4) is also installed between the blower (2) and the suction tube (3).

2. The blower duct structure as described in claim 1, characterized in that, The number of the connection structures is two, and the two connection structures are respectively arranged at the front and rear ends of the suction tube (3); the connection structure includes a first connection block (31) and a second connection block (22). The first connection block (31) is disposed on the suction tube (3), and the second connection block (22) is disposed on the blower tube (2). The second connection block (22) is provided with a groove (220), and the first connection block (31) is provided with a protrusion (310) for cooperating with the groove (220).

3. The blower duct structure as described in claim 2, characterized in that, The grass-raking assembly (4) includes a mounting base (41). The upper and lower end faces of the mounting base (41) are both curved, and the curvature of each curve matches the outline of the corresponding suction tube (3) or blower tube (2). The mounting base (41) is provided with a mounting groove (411). The first connecting block (31) and the second connecting block (22) near the base (1) are engaged and inserted into the mounting groove (411).

4. The blower duct structure as described in claim 3, characterized in that, The mounting base (41) consists of two U-shaped seats that cooperate with each other. A positioning block (400) is provided on one of the U-shaped seats near the second connecting block (22), and a positioning groove (221) for cooperating with the positioning block (400) is provided on the second connecting block (22).

5. The blower duct structure as described in claim 3, characterized in that, The grass-raking assembly (4) further includes a movable frame (42) and rake teeth (43). The movable frame (42) is slidably connected to the mounting base (41), and the rake teeth (43) are mounted on the movable frame (42). An adjustment component is provided between the movable frame (42) and the mounting base (41).

6. The blower duct structure as described in claim 5, characterized in that, The adjustment assembly includes a plug rod (300), the mounting base (41) is provided with a plurality of slots (410), the movable frame (42) is provided with a through hole, and the plug rod (300) passes through the through hole and extends into the corresponding slot (410).

7. The blower duct structure as described in claim 1, characterized in that, The locking mechanism includes a locking tooth (100) and a locking slot (200). The locking tooth (100) is disposed on the base (1), and there are multiple locking slots (200). Multiple locking slots (200) are spaced apart on the slider (21). The locking tooth (100) is adapted to extend into the corresponding locking slot (200) to lock the position of the slider (21).

8. The blower duct structure as described in claim 7, characterized in that, An elastic plate (101) is provided on the base (1). One end of the elastic plate (101) is fixedly connected to the base (1), and the other end is connected to a pedal (102). The locking teeth (100) are provided on the elastic plate (101), and the pedal (102) is used to drive the elastic plate (101) to drive the locking teeth (100) to extend into or disengage from the slot (200).

9. The blower duct structure as described in claim 8, characterized in that, The base (1) is also provided with a limiting block (12), which is used to limit the rotation angle of the pedal (102).

10. The blower duct structure as described in claim 1, characterized in that, The base (1) has outwardly extending shafts (13) on both sides, and wheels (5) are mounted on the shafts (13).

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