A blower-sucker

Abstract

The present invention discloses a blowing and suction machine, which includes a housing and a suction air duct arranged at the front end of the housing. The housing further comprises: a motor, and a centrifugal air impeller on the output shaft of the motor; a crushing mechanism provided with an interleaved cutting assembly for crushing fallen leaves. The present invention has the following advantages and effects: Through the action of the interleaved cutting assembly, the blowing and suction machine can effectively perform crushing cutting on fallen leaves and some hard sundries. On the other hand, it can effectively avoid damage to the internal structure of the equipment, while increasing the impurity collection capacity of the equipment, reducing the replacement and cleaning frequency, and prolonging the single-use time.

Description

Technical Field

[0001] The present invention relates to the technical field of garden tools, and particularly relates to a blower-vacuum cleaner. Background Art

[0002] A blower-vacuum cleaner includes a housing, a motor installed in the housing, a centrifugal impeller driven by the motor, an intake pipe and an exhaust pipe. Fallen leaves are collected through the intake pipe and enter the collection bag of the blower-vacuum cleaner. Generally, the centrifugal impeller in a traditional blower-vacuum cleaner is arranged inside the casing, and then the motor drives the centrifugal impeller to perform blowing, suction and crushing. The disadvantages of the traditional technology are as follows: It is impossible to strip and recycle hard / sharp objects, and the hard / sharp objects may break through the collection bag or damage the structure of the centrifugal impeller. Summary of the Invention

[0003] The purpose of the present invention is to provide a blower-vacuum cleaner that has the effect of crushing fallen leaves.

[0004] The above technical purpose of the present invention is achieved through the following technical solutions: A blower-vacuum cleaner includes a housing and an intake pipe provided at the front end of the housing. The following are further provided inside the housing:

[0005] A motor, and a centrifugal impeller on the output shaft of the motor;

[0006] A crushing mechanism provided with an interleaved cutting assembly for crushing fallen leaves.

[0007] By adopting the above technical solutions, when the motor works, the centrifugal impeller rotates to generate negative pressure in the intake pipe, and then sucks the fallen leaves on the ground. While the motor rotates the centrifugal impeller, a cutting area is formed through a crushing mechanism. When the fallen leaves enter this cutting area, the interleaved cutting assembly runs interleaved to crush the fallen leaves. The crushed fallen leaves are sucked by the centrifugal impeller again and enter the collection device through centrifugal motion for collection and storage.

[0008] The further setting of the present invention is: The interleaved cutting assembly includes a passive cutting part located at the front end of the housing and at the end of the intake pipe, and an active cutting member provided at the front end of the output shaft; The passive cutting part includes a plurality of circumferentially distributed cutting arms, and the active cutting member is located in front of the passive cutting part and forms a cutting area with the cutting arms.

[0009] By adopting the above technical solutions, the active cutting member is rotated by the motor and runs interleaved with the cutting walls in the passive cutting part to form a cutting area and crush the fallen leaves passing through this cutting area.

[0010] A further setting of the present invention is that: an installation box is arranged inside the housing, an installation hole communicating with the air suction pipe is arranged at the front end of the installation box, the motor is fixed at the end of the installation box, and the active cutting part is located at the front end of the installation box.

[0011] By adopting the above technical solution, the installation box integrates a motor, a centrifugal fan blade and an active cutting piece arranged on the output shaft, which is convenient for installing multiple components inside the housing at one time. At the same time, the fallen leaves collected by the centrifugal fan blade can be concentrated in the installation box to do centrifugal motion, avoiding scattering on other components inside the housing.

[0012] A further setting of the present invention is that: the passive cutting part further includes an annular plate and a positioning ring, the end of the cutting arm is arranged inside the annular plate and the front end is arranged on the positioning ring, and the annular plate is circumferentially fixed on the installation box.

[0013] By adopting the above technical solution, the annular plate and the positioning ring in the passive cutting part fix the multiple cutting arms in a distributed manner, so that the cutting arms have a relatively stable positional relationship with the active cutting piece. When the active cutting piece performs crushing, the cutting arms can act together with the active cutting piece to improve the cutting efficiency and effect.

[0014] A further setting of the present invention is that: the installation box includes a first box body connected to the air suction pipe and a second box body for fixing the motor. The first box body is provided with installation holes for placing the passive cutting part and the air suction pipe. After the front end of the air suction pipe abuts against the outer end face of the annular plate, the passive cutting part is fixedly connected to the first box body, and the air suction pipe and the first box body are fixed by a connecting piece.

[0015] By adopting the above technical solution, the passive cutting part is embedded in the installation hole on the first box body. Then, when the ventilation pipe is fixed to the first box body through a connecting piece, the passive cutting part is pressed in the installation hole through the air suction pipe, realizing the fixation of the passive cutting part, so that the passive cutting part does not need to be fixed by other fixing parts, optimizing the structure and reducing the use of overall components.

[0016] A further setting of the present invention is that: a plurality of positioning protrusions are distributed on the outer side of the annular plate, and positioning grooves for inserting the positioning protrusions are arranged on the installation holes.

[0017] By adopting the above technical solution, when the passive cutting part is installed in the installation hole, the positioning protrusions on the annular plate are engaged with the positioning grooves on the installation hole, realizing the circumferential fixation of the passive cutting part in the installation hole and avoiding the passive cutting part from rotating in the same direction or the opposite direction as the active cutting piece.

[0018] A further setting of the present invention is that the front end of the output shaft is in the shape of a waist-shaped hole, and both the centrifugal fan blade and the active cutting member are axially positioned and circumferentially fixed relative to the output shaft.

[0019] By adopting the above technical solution, the front end of the output shaft is set in the shape of a waist-shaped hole, so that the centrifugal fan blade and the active cutting member inserted thereon can be relatively fixed, and the rotation of the output shaft is realized, ensuring the stable operation of the equipment.

[0020] A further setting of the present invention is that the housing includes a first housing and a second housing fixed by bolts. Plug posts are provided at both outer ends of the second box body, and plug holes for the plug posts to be inserted are provided on the first housing and the second housing.

[0021] By adopting the above technical solution, when the first housing and the second housing are mutually butted to form the housing, the plug posts provided on the outer wall of the second box body in the installation box can be respectively inserted into the first housing and the second housing, realizing the fixed installation of the installation box in the housing. This structure enables the operator to fix and install the installation box without using additional fixing parts, optimizing the installation steps, realizing the disassembly and assembly of the collection mechanism from the housing at one time, and at the same time not interfering with other components such as the motor.

[0022] To sum up, the present invention has the following beneficial effects: Through the combined action of the active cutting member and the passive cutting part, the blowing and suction machine can effectively perform comminuting cutting on fallen leaves and some hard sundries. On the one hand, it effectively avoids damaging the internal structure of the equipment, and at the same time can increase the collection amount of impurities by the equipment, reduce the replacement and cleaning times, and extend the single-use time. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of the blowing and suction machine with the first housing removed;

[0024] Figure 2 is a schematic structural diagram of the comminution mechanism;

[0025] Figure 3 is a schematic structural diagram of the blowing and suction machine;

[0026] Figure 4 is Figure 1 the enlarged schematic diagram of part A shown;

[0027] Figure 5 is a position relationship diagram of the collection mechanism and the second housing;

[0028] Figure 6 is Figure 1 the enlarged schematic diagram of part B shown;

[0029] Figure 7 is a schematic structural diagram of the collection mechanism.

[0030] In the figure: 1. housing; 1-1. first housing; 1-2. second housing; 2. suction duct; 3. motor; 4. centrifugal fan; 5. output shaft; 6. staggered cutting assembly; 7. passive cutting part; 8. active cutting piece; 9. cutting arm; 10. mounting box, 10-1. mounting pipe; 11. mounting hole; 12. annular plate; 13. positioning ring; 14. first box body; 15. second box body; 16. connecting piece; 17. positioning convex block; 18. positioning groove; 19. socket post; 20. socket hole; 21. collection mechanism; 22. storage box; 22-1. connecting pipe; 22-2. elastic buckle; 23. filter cover; 24. filter pipe; 25. positioning cover; 26. filter hole; 27. air outlet; 28. limiting groove; 29. positioning buckle; 30. discharge cover; 31. holding part; 32. first holding part; 33. second holding part; 34. battery holder; 35. installation chamber; 36. fixing groove; 37. strip-shaped protrusion; 38. pipe sleeve. Detailed implementation mode

[0031] The present invention will be further described in detail below with reference to the accompanying drawings.

[0032] A blowing and suction machine, referring to Figure 1 and Figure 2 , includes a housing 1, a suction duct 2 provided at the front end of the housing 1, a collection mechanism 21 provided at the lower end of the housing 1, and a crushing mechanism provided inside the housing 1. The front end of the mounting box 10 in the crushing mechanism is communicated with the suction duct 2, and the lower end is communicated with the collection mechanism 21. The motor 3 drives the centrifugal fan 4 to operate, thereby transferring the fallen leaves sucked from the suction duct 2 into the collection mechanism 21. During the transfer of the fallen leaves and other sundries, they are crushed by the crushing mechanism in the crushing mechanism.

[0033] Referring to Figure 3 and Figure 4, the housing 1 includes a symmetrically arranged first housing 1-1 and a second housing 1-2, and the two can be relatively fixed by fixing parts such as bolts. At the same time, a holding part 31 is formed at the upper ends of the first housing 1-1 and the second housing 1-2. The holding part 31 includes a first holding part 32 provided with a switch and a second holding part 33 located at the front side for the operator to optionally hold additionally. The second holding part 33 is in the shape of a columnar body, and through the second holding part 33, it is convenient for the operator to adjust the operation direction. On the other hand, a battery holder 34 is provided behind the first housing 1-1 and the second housing 1-2 to supply power to the motor 3. When the first housing 1-1 and the second housing 1-2 are docked, an installation chamber 35 is formed at the rear. The installation chamber 35 has the same outer contour as the battery holder 34. At the same time, fixing grooves 36 are provided on the first housing 1-1 and the second housing 1-2 to limit the strip-shaped protrusions 37 on the lithium battery housing 1, and finally the fixed installation of the battery holder 34 is realized. This solution reduces the use of fixing parts such as bolts, making the battery holder 34 able to maintain the integrity of the outer shell.

[0034] Return to Figure 2 , the installation box 10 in the crushing mechanism includes a first box body 14 and a second box body 15. The motor 3 is fixed to the rear end of the second box body 15 by bolts. At the same time, the output shaft 5 of the motor 3 extends out of the first box body 14. After the first box body 14 and the second box body 15 are docked, they are fixedly installed by bolts. The centrifugal air impeller 4 is fixed on the output shaft 5 inside the installation box 10. The cross-section of the front end of the output shaft 5 is in the shape of a waist-shaped hole for the fixed installation of the centrifugal air impeller 4. On the other hand, the crushing mechanism includes a passive cutting part 7 and an active cutting part 8. The active cutting part 8 is arranged on the output shaft 5. The active cutting part 8 is preferably a cemented carbide part with blades. When installing the centrifugal air impeller 4 and the active cutting part 8, the centrifugal air impeller 4 can be first sleeved on the output shaft 5, and then a pipe sleeve 38 is placed. Subsequently, the active cutting part 8 is sleeved on the output shaft 5. Finally, a nut head is connected to the output shaft 5 provided with a thread at the top to press the active cutting part 8 against the pipe sleeve 38 and press the centrifugal air impeller 4 on the output shaft 5 to realize the installation of the two.

[0035] Refer to Figure 2 and Figure 5, a mounting hole 11 is provided in the middle of the first box body 14. The above-mentioned passive cutting part 7 is arranged in the mounting hole 11, and at the same time, the active cutting piece 8 is also arranged in the mounting hole 11. The passive cutting part 7 includes a ring-shaped plate 12, cutting arms 9 circumferentially distributed in the inner ring of the ring-shaped plate 12, and a positioning ring 13 that integrates the front ends of the cutting arms 9. When the passive cutting part 7 is installed, it needs to be sleeved on the sleeve 38 prior to the active cutting piece 8, and the positioning ring 13 and the sleeve 38 are in an interference fit, and there is no contact between the two. At the same time, four positioning bumps 17 are convexly provided on the outer ring of the ring-shaped plate 12, and positioning grooves 18 matching the positioning bumps 17 are provided in the mounting hole 11. When the passive cutting part 7 is placed in the mounting hole 11, circumferential fixation with the mounting hole 11 is achieved through the positioning bumps 17, and a cutting area that allows fallen leaves to pass through and can be crushed can be formed between the cutting arms 9 and the active cutting piece 8 on the front side.

[0036] Refer to Figure 5 and Figure 6 , the suction air pipe 2 is inserted into the housing 1 and then fixed to the mounting hole 11 of the first box body 14. The front end of the suction air pipe 2 is directly inserted into the mounting hole 11, and at the same time, it is fixedly connected to the first box body 14 through a connector 16 provided on the outer wall. The connector 16 is preferably an existing bolt. After the suction air pipe 2 is relatively fixed to the first box body 14, its top end can directly press the ring-shaped plate 12 on the passive cutting part 7, so that the ring-shaped plate 12 is axially limited in the mounting hole 11. Through this structure, the installation steps for additionally fixing the passive cutting part 7 are reduced, and the complexity of the structure of the passive cutting part 7 is reduced.

[0037] On the other hand, refer to Figure 1 and Figure 5 , two socket columns 19 are respectively provided on both sides of the outer wall of the second box body 15, and socket holes 20 are provided on the first housing 1-1 and the second housing 1-2 at positions corresponding to the socket columns 19. When the entire crushing mechanism is installed, there is no need to use additional bolts to fix it to the housing 1 either. When the first housing 1-1 and the second housing 1-2 are docked and fixed, only the socket columns 19 on the second box body 15 need to be inserted into the corresponding socket holes 20. When the first housing 1-1 and the second housing 1-2 are fixed, the entire crushing mechanism is directly fixed in the housing 1. Through the integrated integration of the crushing mechanism and the centrifugal air blade 4, the cumbersome degree of disassembly, installation, and fixation of the blower is greatly reduced.

[0038] Refer to Figure 5 and Figure 7, on one side of the lower end, the first box body 14 and the second box body 15 are formed with an installation pipe 10-1 for air circulation, and the collection mechanism 21 is fixed on the installation pipe 10-1. The collection mechanism 21 includes a cylindrical storage box 22. At the upper end of the storage box 22, there is a connecting pipe 22-1. The connecting pipe 22-1 can be directly fixed to the installation pipe 10-1 by interference fit, or can be fixed by bolts and other parts. The storage box 22 and the installation pipe 10-1 are detachably connected. The collection mechanism 21 also includes a filter cover 23 arranged on the side of the storage box 22 close to the installation pipe 10-1 and a discharge cover 30 located at the front end of the storage box 22. The crushed leaves are filtered through the filter cover 23, and then the air directly circulates to the outside through the filter cover 23. At the same time, through the setting of the discharge cover 30, the collected leaves can be directly dumped and cleaned. The upper end of the discharge cover 30 is rotatably connected to the storage box 22, and the lower end is fixedly connected to the elastic buckle 22-2 on the storage box 22.

[0039] Figure 7 Among them, the filter cover 23 includes a filter pipe 24 which is also in a cylindrical shape and a positioning cover 25 for fixing the filter pipe 24 on the storage box 22. Among them, filter holes 26 are opened on the side wall of the filter pipe 24, the front end is sealed, and the rear end is opened and communicated with the positioning cover 25. A plurality of air outlet holes 27 are distributed on the positioning cover 25. When the whole filter cover 23 is installed, the filter pipe 24 can be inserted into the limit groove 28 opened on one side of the storage box 22, and then the positioning cover 25 is inserted into the limit groove 28. After the positioning cover 25 presses the filter pipe 24, it is fixed to the positioning hole of the limit groove 28 through the positioning buckle 29 provided on itself for fixed installation.

[0040] Leaf crushing process: After the motor 3 starts to rotate the centrifugal air blade 4, a negative pressure is generated in the installation box 10 and the air suction pipe 2; sundries such as fallen leaves enter the installation box 10 through the air suction pipe 2. During the process of passing through the cutting area, they are crushed by the combined action of the active cutting part 8 and the passive cutting part 7; the crushed leaves enter the storage box 22 through the centrifugal air blade 4 and the installation pipe 10-1; under the action of centrifugal force, a cyclone separation effect is formed, and the leaves are collected in the storage box 22, and the air is discharged through the filter pipe 24 and the positioning cover 25; finally, when a single use is completed, the discharge cover 30 is opened to take out the leaves.

[0041] The specific embodiments are only explanations of the present invention, and they are not limitations of the present invention. Those skilled in the art can make modifications without creative contributions to this embodiment according to needs after reading this specification, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A blower-sucker, comprising a housing (1) and a suction duct (2) arranged at the front end of the housing (1), characterized in that: Inside the housing (1), there is also provided: A motor (3), and an output shaft (5) of the motor (3) is provided with a centrifugal fan blade (4); A crushing mechanism, which is provided with an interleaved cutting assembly (6) for crushing fallen leaves; The interleaved cutting assembly (6) includes a passive cutting part (7) located at the front end of the housing (1) and at the end of the air suction pipe (2), and an active cutting member (8) arranged at the front end of the output shaft (5); the passive cutting part (7) includes a plurality of circumferentially distributed cutting arms (9), and the active cutting member (8) is located at the front end of the passive cutting part (7) and forms a cutting area with the cutting arms (9); An installation box (10) is arranged inside the housing (1), an installation hole (11) communicating with the air suction pipe (2) is arranged at the front end of the installation box (10), the motor (3) is fixed to the end of the installation box (10), and the active cutting member (8) is located at the front end of the installation box (10); The passive cutting part (7) further includes an annular plate (12) and a positioning ring (13), the ends of the cutting arms (9) are arranged inside the annular plate (12), and the front ends are arranged on the positioning ring (13), and the annular plate (12) is circumferentially fixed on the installation box (10); The installation box (10) includes a first box body (14) connected to the air suction pipe (2) and a second box body (15) for fixing the motor (3), an installation hole (11) for placing the passive cutting part (7) and the air suction pipe (2) is formed on the first box body (14), after the front end of the air suction pipe (2) abuts against the outer end face of the annular plate (12), the passive cutting part (7) is fixedly connected to the first box body (14), and the air suction pipe (2) and the first box body (14) are fixed by a connecting member (16); A plurality of positioning bumps (17) are distributed on the outer side of the annular plate (12), and a positioning groove (18) for inserting the positioning bumps (17) is formed on the installation hole (11); The housing (1) includes a first housing (1-1) and a second housing (1-2) fixed by bolts, plug posts (19) are arranged at both ends of the outer side of the second box body (15), and plug holes (20) for inserting the plug posts (19) are arranged on the first housing (1-1) and the second housing (1-2); 2. The blowing and suction machine according to claim 1, characterized in that: The front end of the output shaft (5) is in the shape of a waist-shaped hole, and both the centrifugal fan blade (4) and the active cutting member (8) are axially positioned and circumferentially fixed relative to the output shaft (5).

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