CN103741622B - Improved structure of leaf suction machine - Google Patents

Abstract

The invention discloses an improved structure of a leaf blower, which comprises a volute, and the circumferential contour curve of the volute is in a continuous state at the tail of the volute. The present invention makes the air duct inside the volute more smooth by designing the contour curve of the volute tail to be continuous, and also reduces the noise at the same time, thereby solving a series of problems caused by the discontinuity of the volute in the prior art.

Description

Improved structure of leaf blower

technical field

The invention relates to a leaf blower.

Background technique

The leaf blower is an outdoor cleaning tool, mainly used for cleaning and collecting fallen leaves. It blows away the leaves and dust on the ground by blowing air or puts the leaves into the bag by suction, and crushes the leaves before they enter the bag.

Existing leaf blower generally includes volute, fan blade, motor, air pipe and control switch etc., and the fan blade that links to each other with motor is positioned at the volute air duct of volute, and it is driven by motor in the volute wind. The high-speed rotation in the tunnel breaks the leaves and other debris sucked into the room, and the broken debris is discharged from the chip outlet and collected in the garbage bag. But due to the need to place the safety switch and the consideration of the strength of the volute at the left and right volute tails of the existing leaf blower, the volute here is often discontinuous, and the air duct of the discontinuous volute is not smooth. The function of the volute is also lost, the air volume cannot meet the requirements of theoretical calculations, and the noise is increased.

Contents of the invention

The technical problem to be solved by the present invention is to provide an improved structure of the leaf blower to realize the continuity of the volute.

In order to solve the above technical problems, the present invention adopts the following technical solution: the improved structure of the leaf blower includes a volute, and the circumferential contour curve of the volute is continuous at the tail of the volute.

Preferably, the inside of the volute is provided with an air duct, the bottom of the volute is provided with an air duct opening, the air duct opening is connected to an air duct, the outer wall of the tail end of the air duct is provided with a hinged seat and the volute is hinged, and the air duct A fixed head is provided on the outer wall of the tail end and the hinge seat at a circumferential interval of 180 degrees, and the volute is provided with a fixed head self-locking device corresponding to the fixed head.

Preferably, the fixed head self-locking device includes a trigger, the volute is provided with a trigger rail for the trigger to slide linearly, one end of the trigger is provided with a locking head that cooperates with the fixed head, and the other end of the trigger is connected to the Compression springs are provided between the rail ends.

Preferably, the air duct head end is provided with an air duct wheel system, and the air duct wheel system includes a track extending along the axial direction of the air duct on the outer wall of the air duct head end and a wheel frame arranged on the track. Wheels are installed, a gear structure is arranged on the track, and a gear adjustment device is arranged on the wheel frame.

The present invention makes the air duct inside the volute more smooth by designing the contour curve of the volute tail to be continuous, and also reduces the noise at the same time, thereby solving a series of problems caused by the discontinuity of the volute in the prior art.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

Fig. 1 is a schematic diagram of the structure after the air duct is separated from the volute;

Fig. 2 is a schematic diagram of the local structure after the air duct is separated from the volute;

Fig. 3 is a schematic diagram of the structure when the air duct is rotated and fixed by the hinge seat;

Fig. 4 is a structural schematic diagram of the air duct and the volute after the fixed head and the fixed head self-locking device are self-locked and fixed;

Fig. 5 is a structural schematic view of the air duct and the volute when the trigger is pulled to release the self-locking device of the fixed head;

Fig. 6 is a structural schematic diagram of the track and the wheel frame in the separated state in the air duct wheel system;

Fig. 7 is a schematic diagram of the structure of the air duct A-A in Fig. 6;

Fig. 8 is a structural schematic view of the A-A direction of the air duct wheel system in Fig. 6;

Fig. 9 is a schematic structural view after the track and the wheel frame are combined;

Fig. 10 is a schematic diagram of the overall decomposition structure of the air duct wheel system;

Fig. 11 is a schematic structural diagram of the working state of the gear adjustment device;

Figure 12 is a schematic view of the structure of the volute;

Fig. 13 is a schematic diagram of the section A-A in Fig. 12 .

detailed description

As shown in Figures 1 to 5, the leaf blower includes a volute 1, the volute 1 is connected with an air duct 2, and an air duct disassembly and fixing structure is arranged between the volute 1 and the air duct 2, and the volute 1 The inner air duct is provided with an air outlet, and the tail end of the air pipe 2 is provided with a stepped head with a smaller diameter, which is just inserted into the air outlet after the air pipe 2 is installed. The outer wall of the tail end of the air duct 2 is provided with a hinged seat 21 to be hinged with the volute 1. The hinged seat is arranged in front of the step head. A rotating shaft is provided on the hinged seat 21. A rotating shaft is provided on the volute 1 for the rotation of the air duct. The support 11 for shaft rotation is provided with a fulcrum for the rotation of the rotation shaft. The outer wall of the tail end of the air duct 2 is provided with a fixed head 22 at a circumferential interval of 180 degrees from the hinge seat, and the fixed head is arranged on the step head, and the volute is provided with a fixed head self-locking device 10 corresponding to the fixed head.

Specifically, the fixed head self-locking device 10 includes a trigger 101, the volute 1 is provided with a trigger track for the trigger to slide linearly, and one end of the trigger is provided with a locking head 103 that cooperates and locks with the fixed head. A compression spring 102 is provided between the other end of the trigger and the track end, and a wrench part 104 is provided on the trigger 101 . When the wrench part 104 moved backward to compress the compression spring, the lock head 103 moved away from the fixed head 22, and when the wrench part 104 was loosened to reset the lock end 103, the lock end 103 and the fixed head 22 are self-locked. The cross-sectional profile of the locking head 103 is a right-angled triangle, and the cross-section of the head end of the fixing head 22 is also a right-angled triangle. The hinged seat 21 is provided with a plug 210, and the volute 1 is provided with a slot 110 for the plug to be inserted into. When the rotating air duct is assembled, the plug is inserted into the slot.

As shown in Figure 3, when assembling the air duct 2 on the volute 1, hold the air duct 2 by hand, the air duct 2 can rotate around the hinged structure formed by the rotating shaft and the support 11, when the fixed head 22 and the lock When the head 103 contacts, the lock head 103 moves away from the fixed head 22 under the action of the force of the fixed head. Fix it; as shown in Figure 5, when the air duct 2 is removed, the wrench part 104 of the trigger 101 is pulled by hand, the trigger 101 overcomes the force of the compression spring 102 and moves along the trigger track, so that the lock head 103 is moved away and fixed Head 22, so that the air duct 2 can be removed.

Figures 6 to 11 show the structure of the air duct wheel system 20 of the leaf blower. The air duct wheel system 20 is installed at the head end of the air duct 2. As shown in FIG. The outer wall of the head end extends along the track 201 axially of the air duct and the wheel frame 203 arranged on the track. Wheels 205 are installed on the wheel frame. The wheel frame can slide along the track to adjust the position of the wheels. A gear position structure 202 is arranged on the track, and the gear position structure 202 is a row of gear position holes arranged on the rail longitudinal beam along the axial direction of the air duct. The gear adjustment device 204 is provided on the wheel frame, by adjusting the gear adjustment device 204 to realize clutching and disengagement with the gear structure 202 , so that the wheel frame 203 is fixed or the position is adjusted along the track 201 .

As shown in Figure 7, the track 201 includes a track body 2010 extending axially along the air duct 2. The outer end of the track body 2010 is provided with a track beam 2011 perpendicular to the track body. Track beams 2011 are perpendicular to track stringers 2012 .

As shown in Figure 8, the wheel frame 203 includes a left wheel frame 2030 and a right wheel frame 2031, the left wheel frame 2030 and the right wheel frame 2031 are respectively provided with wheel shafts 2033, and the wheels 205 are installed on the wheel shafts 2033, the Left wheel frame upper end is provided with U-shaped left wheel frame groove 2034, and described right wheel frame upper end is provided with U-shaped right wheel frame groove 2035, and described left wheel frame groove bottom is higher than right wheel frame groove bottom.

As shown in Figures 9 and 10, the left wheel frame 2030 and the right wheel frame 2031 are arranged on both sides of the track 201 and fixed by screwing together, the track groove formed by the left wheel frame groove 2034 and the right wheel frame groove 2035 cooperates with the track 201, Wherein the left wheel frame groove 2034 just snaps on the left side of the track beam 2011, the right wheel frame slot 2035 just snaps on the track beam 2012 on the right side of the track beam 2011 and protrudes below the track beam, and the two wheels 205 are installed on the left wheel respectively. On the axle of frame and right wheel frame and fix by screw 2051, screw 2051 is provided with gasket 2050.

As shown in FIG. 11 , the gear adjustment device 204 includes an adjustment plate 2040, one end of the adjustment plate 2040 is provided with a button 2042, and the other end is provided with a shaft tube 2041, and the button 2042 is snapped into the gear hole so that the wheel frame Fixed on the track, a return spring 2043 is provided between the right wheel frame 2031 and the end of the shaft tube, press the button, the button will come out of the gear hole, the wheel frame can adjust the position along the track, release the button, the button is in the position of the return spring 2043 Under the action, snap into the gear hole again. As shown in Figures 4 and 5, the left wheel frame is provided with a shaft hole 2032, and the shaft hole 2041 penetrates into the shaft hole to realize the installation of the entire gear adjustment device 204 on the wheel frame, and the return spring 2043 corresponds to the shaft Drum position setting.

The air duct wheel system 20 in the present invention is composed of two main parts separated by a track 201 and a wheel frame 203, wherein a gear structure 202 is arranged on the track, wheels are installed on the wheel frame and a gear adjustment device 204 is provided, as shown in the figure As shown in Figure 6, when the consumer holds the wheel frame 203 to install on the track 201 of the air duct 2, the consumer's hand presses the button 2042 of the position adjustment position, and at the same time releases the button when moving the wheel frame 203 to a suitable position. The hand of the button, the button 2042 snaps into the gear hole, and the wheel frame can be fixed at this position, and the structure after fixing is shown in Figure 9 . The air duct wheel system 20 has changed the problem that the position of the air duct wheels of leaf blowing machines on the market cannot be adjusted and the adjustment is inconvenient, and makes the design of the blowing machine more humanized.

As shown in Figure 12 and Figure 13, the volute is formed by connecting the left and right volutes through screws, and the volutes are continuous at the tails of the left and right volutes. As shown in Figure 13, the so-called volute tail continuity refers to the continuation of the circumferential contour curve of the volute, which can be completed only through the left and right volute without adding additional supplementary materials. Since the volute is designed to be continuous in shape, it can avoid the discontinuity of the actual volute air duct of the fan blade, and also avoid the additional wind guide structure added to make the actual volute air duct of the fan blade continuous, ensuring The continuity of the actual volute air duct of the fan blade and the continuity of the wind motion.

Claims (3)

1. improved structure of leaf suction machine, the airduct comprising spiral case (1) and be connected with spiral case, it is characterized in that: the circumferential contour curve of described spiral case at spiral case afterbody (3) in continuous state, the head end of described airduct (2) is provided with airduct wheel system (20), described airduct wheel system comprises airduct head end outer wall along the axially extended track of airduct (201) and the wheel carrier (203) that is arranged on track, described wheel carrier is provided with wheel (205), described track is provided with shift structure (202), described wheel carrier is provided with gear adjusting device (204), described track comprises along the axially extended track body (2010) of airduct, described track body outer end is provided with the track cross beam (2011) vertical with track body, below described track cross beam, right-hand member is provided with the track longeron (2012) vertical with track cross beam, described shift structure is along row's gear hole that airduct is axially arranged on track longeron, described wheel carrier comprises revolver frame and right wheel carrier, revolver frame and right wheel are set up in track both sides and are fixed by screw split, described gear adjusting device comprises adjustable plate, described adjustable plate one end is provided with button, the other end is provided with beam barrel, described button snap enters gear hole makes wheel carrier fix in orbit, back-moving spring is provided with between described right wheel carrier and beam barrel end, pressing button, gear hole deviate from by button, release button, and button again snaps in gear hole under the effect of back-moving spring.

2. improved structure of leaf suction machine according to claim 1, it is characterized in that: described spiral case (1) inside is provided with air channel, wind passage mouth is provided with bottom spiral case, described wind passage mouth is connected with airduct (2), it is hinged with spiral case that described airduct tail end outer wall is provided with hinged seat (21), described airduct tail end outer wall and hinged seat circumference 180 degree, interval are provided with gland (22), and the corresponding described gland of described spiral case is provided with gland self-locking device (10).

3. improved structure of leaf suction machine according to claim 2, it is characterized in that: described gland self-locking device (10) comprises trigger (101), the trigger track for trigger linear slide is provided with in described spiral case, described trigger one end is provided with the tapered end (103) locked with gland, is provided with Compress Spring (102) between the described trigger other end and track end.