Garden air blower

Abstract

The utility model relates to the field of garden electric tools, and particularly discloses a garden air blower which comprises a lower shell and an upper shell, after the upper shell and the lower shell are spliced, a mounting channel is defined, one end of the mounting channel is the upstream side, the other end of the mounting channel is the downstream side, and a silencing component is attached to the upstream side; a first folding part is arranged at one end of the lower shell, a second folding part is arranged at one end of the upper shell, after the lower shell and the upper shell are spliced, the first folding part and the second folding part encircle the silencing component to form a silencing barrel, and the outer wall of the silencing barrel is attached to the inner wall of the upstream side; the folding process of the first folding part and the second folding part is the installation process of the silencing barrel, the silencing barrel is convenient to install and does not need to be pasted to the inner wall of the upstream side through glue, and the installation efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of garden power tools, specifically to a garden blower. Background Technology

[0002] A garden blower is a common garden power tool, mainly used to use airflow to clear fallen leaves, grass clippings, road dust, snow, etc.

[0003] When a garden blower is working, the fan inside the casing starts, and outside air enters the duct inside the casing from the upstream side and then flows out from the outlet on the casing. In actual operation, when outside air flows into the upstream side of the casing at high speed, it generates considerable wind noise. Therefore, sound-absorbing components are installed on the inner wall of the upstream side of the casing. Based on our understanding of relevant technologies, the installation of sound-absorbing components on some garden blowers requires gluing sheet-like components to the inner wall of the upstream side along the shape of the inner surface. Furthermore, it often requires cutting the sound-absorbing components and splicing multiple pieces together to glue them to the inner wall of the upstream side. This method has the problem of low assembly efficiency, and if the gluing is not done properly, installation quality problems can easily occur. Utility Model Content

[0004] The purpose of at least one specific embodiment of this utility model is to overcome the defects of the existing technology and provide a garden blower.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A garden blower, comprising:

[0007] Lower housing;

[0008] The upper housing, together with the lower housing, forms an installation channel, which includes an upstream side and a downstream side that are interconnected.

[0009] The lower housing is characterized by having a first retractable portion located on the upstream side, and the upper housing is characterized by having a second retractable portion located on the upstream side;

[0010] A sound-absorbing component suitable for flexural deformation is positioned at the first or second convergence portion.

[0011] When the lower shell is spliced ​​with the upper shell, the first and second gathering parts gradually approach each other to gradually curl the silencing component. The opposite ends are joined together to form a silencing cylinder, so that the inner wall of the silencing cylinder formed by the joining is a smooth and continuous annular surface, and the outer wall of the silencing cylinder is in contact with the inner wall of the first and second gathering parts.

[0012] Furthermore, the installation channel is provided with a blower assembly, which includes an outer duct and a drive motor and a fan located in the outer duct. The air inlet of the blower assembly extends into the upstream side and forms an abutment connection with the inner wall of the adjacent part of the silencer.

[0013] Furthermore, a support portion is provided on the inner wall of the first and second gathering portions. After the first and second gathering portions are closed, the support portion covers and supports the outside of the muffler.

[0014] Furthermore, the outer duct has a flared end near the upstream side, which extends into the upstream side and forms a clamping opening with the support portion. The clamping opening can clamp and fix one end of the muffler.

[0015] Furthermore, the flared portion extends radially toward the inner wall of the upstream side.

[0016] Furthermore, a limiting part is provided on one side of the support part, and the limiting part limits the end of the muffler.

[0017] Furthermore, air inlet hoods are installed at the ends of the first and second gathering portions away from the downstream side, and the air inlet hoods limit the end of the silencer.

[0018] Furthermore, the ends of the first and second gathering portions are respectively provided with a radially extending first flange and a second flange, and one end of the silencer is clamped between the first flange and the second flange;

[0019] Multiple connecting seats are provided on the end faces of the first flange and the second flange facing the air inlet shroud for connecting and installing the air inlet shroud.

[0020] Furthermore, the air inlet shroud has a protrusion on the side facing the silencer cylinder. The protrusion is arranged in a ring shape, which is suitable for extending into the silencer cylinder and forming an abutment connection with the inner wall of the silencer cylinder when the air inlet shroud is connected and installed on the connecting seat.

[0021] Furthermore, the air inlet shroud includes an annular frame and the guide vanes disposed within the annular frame. When the air inlet shroud is connected and installed on the connecting seat, the outer end wall of the silencer abuts against the inner end wall of the annular frame.

[0022] Furthermore, a controller is provided at the first or second gathering part;

[0023] The silencing component has an opening corresponding to the controller, so that the surface of the controller is exposed in the main air duct. The opening is configured as a positioning opening required for installing the silencing component.

[0024] Furthermore, the diameter of the upstream side gradually decreases from the end furthest from the duct to the end closest to the duct;

[0025] The silencing component has a fan-shaped structure, and the silencing component is formed into a cone-shaped silencing cylinder after being surrounded by the first and second converging parts.

[0026] A garden blower, comprising:

[0027] Lower housing;

[0028] The upper shell, after being spliced ​​with the lower shell, forms an installation channel, with one end of the installation channel being the upstream side and the other end being the downstream side;

[0029] A noise-absorbing component suitable for flexural deformation is positioned on the upstream side;

[0030] The feature is that one end of the lower housing is provided with a first gathering portion, and one end of the upper housing is provided with a second gathering portion;

[0031] An outer duct is provided between the lower shell and the upper shell, and a support portion is provided on the inner wall of the first and second converging portions;

[0032] The outer duct has a flared section at one end near the upstream side, and the flared section extends into the upstream side to form a clamping opening with the support portion;

[0033] When the noise-reducing component is installed on the lower housing, one side of the noise-reducing component is attached to the support of the first retracting part. After the outer duct is fixedly installed on the lower housing, the flared part at the end of the outer duct and the support on the lower housing clamp and fix the noise-reducing component. At the same time, the middle part of the noise-reducing component is partially retracted by the first retracting part, and both ends of the noise-reducing component are in an unretracted state.

[0034] After the upper shell is attached to the lower shell, the support portion on the second gathering part approaches the silencing component and gathers the two ends of the silencing component, so that the silencing component is surrounded and enclosed to form a silencing cylinder, and the clamping port clamps and fixes one end of the silencing cylinder.

[0035] Furthermore, heat dissipation fins are provided at the first or second retractable portion, and electronic components are installed inside the upper or lower housing. The heat dissipation fins are located on one side of the electronic components and on the upstream side.

[0036] The silencing component has a clearance opening corresponding to the heat dissipation fins, and the clearance opening is configured as a positioning opening required for installing the silencing component.

[0037] When the silencing component is installed on the lower housing, the clearance on the silencing component is aligned with the heat dissipation fins.

[0038] Furthermore, the diameter of the upstream side gradually decreases from the end furthest from the duct to the end closest to the duct;

[0039] The silencing component has a fan-shaped structure, and the silencing component is formed into a cone-shaped silencing cylinder after being surrounded by the first and second converging parts.

[0040] The garden blower provided in this application has the following advantages over the prior art: The outer duct of this application has a flared end near the upstream side, which extends into the upstream side and forms a clamping opening with the support. When the silencing component is installed on the lower shell, one side of the silencing component is attached to the support of the first converging part. After the outer duct is fixedly installed on the lower shell, the flared end of the outer duct clamps and fixes the silencing component with the support on the lower shell. After the upper shell is spliced ​​onto the lower shell, the support on the second converging part approaches the silencing component and converges both ends of the silencing component, so that the silencing component is surrounded and enclosed to form a silencing cylinder. Therefore, after the lower shell and the upper shell are spliced, the first and second converging parts can enclose the silencing component to form a silencing cylinder. The outer wall of the silencing cylinder is attached to the inner wall of the upstream side and will not loosen. The closing process of the first and second converging parts is the installation process of the silencing cylinder. The silencing cylinder is easy to install and does not need to be glued to the inner wall of the upstream side, thus improving installation efficiency. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the structure of one embodiment of this application;

[0043] Figure 2 This is an exploded view of one embodiment of this application;

[0044] Figure 3 This is an exploded view of another embodiment of this application;

[0045] Figure 4This is a schematic diagram of the structure of the air inlet shroud according to a certain embodiment of this application;

[0046] Figure 5 This is an exploded view diagram from another perspective of one embodiment of this application;

[0047] Figure 6 This is a side view of one embodiment of the present application;

[0048] Figure 7 for Figure 3 Schematic diagram of the cross section along line AA;

[0049] Figure 8 for Figure 4 Structural diagram of the middle noise reduction component before installation;

[0050] Figure 9 This is a schematic diagram of the structure of the sound-absorbing component when it is partially closed in one embodiment of this application;

[0051] Figure 10 This is a schematic diagram of the structure of the sound-absorbing component after it has been fully closed in one embodiment of this application;

[0052] Figure 11 This is a schematic diagram of the structure of a noise-reducing component in one embodiment of this application. Detailed Implementation

[0053] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0054] Reference Figures 1 to 4 A garden blower 100 includes a lower housing 10 and an upper housing 20. The upper housing 20 and the lower housing 10 are spliced ​​together to form an installation channel 30. The installation channel 30 includes an upstream side 301 and a downstream side 302 that are interconnected. A noise-absorbing component 40a is disposed at the upstream side 301. The noise-absorbing component 40a is adapted to flexural deformation and will bend under bending moment. Specifically, in this technical solution, the noise-absorbing component 40a bends along a certain curve shape under the drive of external force, and can transform from a planar fan shape to a three-dimensional cone shape.

[0055] The lower housing 10 has a first gathering part 101 located on the upstream side 301 at one end, and the upper housing 20 has a second gathering part 201 located on the upstream side 301 at one end. After the lower housing 10 and the upper housing 20 are spliced ​​together, the first gathering part 101 and the second gathering part 201 enclose the silencing component 40a to form a silencing cylinder 40b, and the outer wall of the silencing cylinder 40b is attached to the inner wall of the upstream side 301.

[0056] Specifically, the noise-reducing component 40a is positioned at the first gathering part 101 or the second gathering part 201;

[0057] When the lower shell 10 is spliced ​​with the upper shell 20, the first gathering part 101 and the second gathering part 201 gradually approach each other to gradually curl the silencing component 40a. The opposite ends are joined together to form a silencing cylinder 40b, so that the inner wall of the silencing cylinder 40b formed by the joining is a smooth and continuous annular surface, and the outer wall of the silencing cylinder 40b is in contact with the inner wall of the first gathering part 101 and the second gathering part 201.

[0058] Furthermore, a blower assembly 60 is provided in the mounting channel 30 between the lower housing 10 and the upper housing 20. The blower assembly 60 includes an outer bypass 50 and a drive motor 601 and a fan 602 located in the outer bypass 50. The air inlet of the blower assembly 60 faces the upstream side 301, and the air outlet of the blower assembly 60 faces the downstream side 302. The diameter of the upstream side 301 gradually decreases from the end away from the outer bypass 50 to the end close to the outer bypass 50, and the upstream side 301 is similar to the shape of a trumpet.

[0059] The blower assembly 60 includes a motor 601 installed inside the outer duct 50 and a fan 602 connected to the motor 601. The air inlet of the fan 602 faces the upstream side 301, and the air outlet of the fan 602 faces the downstream side 302. After the motor 601 is started, it drives the fan 602 to rotate at high speed to generate airflow. In this embodiment, a blower pipe is connected to the downstream side 302. The end of the blower pipe is connected to the outer duct 50. The airflow generated by the rotation of the fan 602 flows through the outer duct 50 to the blower pipe. The blower pipe discharges the high-speed airflow to blow away fallen leaves, grass clippings, road dust, snow, etc. on the ground.

[0060] In addition, to facilitate the fixed installation of the blower assembly 60, a cover plate 300 is provided on the outer duct 50. The cover plate 300 is fixedly connected to the lower housing 10 by bolts. The outer duct 50 and the cover plate 300 are provided with corresponding positioning holes 310. When the outer duct 50 is installed on the lower housing 10, the cover plate 300 covers the surface of the outer duct 50. The end of the cover plate 300 is fixedly connected to the lower housing 10 by bolts. The bolts are tightened in the positioning holes 310 of the cover plate 300, and the cover plate 300 fixes the outer duct 50.

[0061] Additionally, refer to Figure 5 and Figure 7 As shown, the air inlet of the blower assembly 60 extends into the upstream side 301 and forms an abutting connection with the inner wall of the adjacent part of the silencer 40b.

[0062] Reference Figure 2 , Figure 3 , Figure 5 ,as well as Figure 7 and Figure 8 As shown, the rapid prototyping process of the muffler 40b will be described in detail below, taking into account the specific structures of the first gathering part 101 and the second gathering part 201.

[0063] Furthermore, a support portion 70 is provided at one end of the inner wall of the first gathering portion 101 and the second gathering portion 201. After the first gathering portion 101 and the second gathering portion 201 are closed together, the support portion 70 covers and supports the outside of the muffler 40b. Specifically, the muffler component 40a has a fan-shaped structure. After the muffler component 40a is closed by the first gathering portion 101 and the second gathering portion 201, it forms a conical muffler 40b.

[0064] Specifically, refer to Figure 2 , Figure 5 and Figure 8 As shown, the support portion 70 on the first gathering portion 101 has an arc-shaped conical surface 70a. Since the muffler 40b is a conical structure formed by the fan-shaped muffler member 40a being surrounded by the first gathering portion 101 and the second gathering portion 201, the arc-shaped conical surface 70a of the support portion 70 on the first gathering portion 101 can better fit with the outer conical surface of the muffler 40b, so as to fit and support the muffler 40b. This fit allows the support portion 70 to more stably and comprehensively cover and support the outside of the muffler 40b.

[0065] Reference Figure 3 As shown, the support portion 70 on the second gathering portion 201 has an annular flange 70b. When the first gathering portion 101 and the second gathering portion 201 are closed to form the support structure of the muffler 40b, the annular flange 70b can cooperate with the corresponding structure on the first gathering portion 101 (such as the arc-shaped conical surface 70a structure), so that the first gathering portion 101 and the second gathering portion 201 are more tightly and firmly connected together in the closed state, preventing relative displacement or loosening during use, thereby ensuring that the muffler 40b can always be stably covered and supported. Of course, those skilled in the art should know that the support portion 70 on the second gathering portion 201 can also adopt the arc-shaped conical surface structure of the support portion 70 on the first gathering portion 101.

[0066] Furthermore, the outer duct 50 is provided with a flared portion 501 at one end near the upstream side 301. The flared portion 501 extends into the upstream side 301 and forms a clamping opening 80 between it and the support portion 70. The clamping opening 80 can clamp and fix one end of the muffler 40b.

[0067] Specifically, the flared portion 501 extends from the end of the outer duct 50 into the upstream side 301 and extends radially toward the inner wall of the upstream side 301. In this way, an annular clamping opening 80 is formed between the outer wall of the flared portion 501 and the inner wall of the support portion 70. The clamping opening 80 mainly serves to clamp and fix the silencing component 40a attached to the upstream side 301, preventing the silencing cylinder 40b formed by the silencing component 40a after being folded up from shifting on the inner wall of the upstream side 301.

[0068] In addition, a limiting part 701 is provided on one side of the support part 70, which limits the end of the muffler 40b.

[0069] In short, refer to Figure 2 and Figure 7 As shown, the connecting end faces of the upstream side 301 and the downstream side 302 of the installation channel 30 are stepped. The stepped connecting end faces provide a clear reference and limit for the axial position of the muffler 40b in the installation channel 30, thus forming a limiting part 701. When the muffler 40b is installed in place, its end can form a tight fit with the stepped end face. In this way, the limiting part 701 further ensures that the muffler 40b will not undergo excessive displacement in the axial direction.

[0070] Furthermore, an air inlet hood 200 is installed at the other end of the first gathering part 101 and the second gathering part 201, and the air inlet hood 200 and the limiting part 701 respectively limit the two ends of the installed silencer 40b.

[0071] Specifically, an air inlet hood 200 is installed at the ends of the first gathering part 101 and the second gathering part 201 away from the downstream side 302, and the air inlet hood 200 limits the end of the silencer 40b.

[0072] Reference Figure 3 and Figure 5 As shown, the ends of the first gathering part 101 and the second gathering part 201 are respectively provided with a radially extending first flange 71 and a second flange 72, and one end of the muffler 40b is clamped between the first flange 71 and the second flange 72.

[0073] Multiple connecting seats 73 are provided on the end faces of the first flange 71 and the second flange 72 facing the air inlet cover 200 for connecting and installing the air inlet cover 200.

[0074] The air inlet shroud 200 has a protrusion 202 on the side of the air inlet shroud 201 facing the silencer 40b. The protrusion 202 is arranged in a ring shape, which is suitable for the air inlet shroud 200 to be connected and installed on the connecting seat 73, so that the protrusion 202 extends into the silencer 40b and forms an abutting connection with the inner wall of the silencer 40b.

[0075] Further reference Figure 4 As shown, the air inlet shroud 200 includes an annular frame 203 and a guide vane 201 disposed within the annular frame. When the air inlet shroud 200 is connected and installed on the connecting seat 73, the outer end wall of the silencer 40b abuts against the inner end wall of the annular frame 203.

[0076] A controller is provided at the first gathering part 101 or the second gathering part 201;

[0077] The silencing component has a clearance opening 40c corresponding to the controller, so that the surface of the controller is exposed in the main air duct. The clearance opening 40c is configured as the positioning opening required for installing the silencing component 40a.

[0078] Specifically, in some embodiments, a controller is provided at the first gathering part 101 or the second gathering part 201. The controller includes heat dissipation fins 90 and a circuit board connected to each other. The circuit board is installed inside the upper housing 20 or the lower housing 10. The heat dissipation fins 90 are located on one side of the circuit board and at the upstream side 301.

[0079] The air flowing at the upstream side 301 sweeps across the surface of the heat dissipation fins 90, carrying the heat emitted by the heat dissipation fins 90 into the main air duct and outwards, which can cleverly dissipate heat from the electronic components inside the upper housing 20 or the lower housing 10.

[0080] The silencing component 40a has a clearance opening 40c corresponding to the heat dissipation fins 90. The clearance opening 40c is configured as a positioning opening required for installing the silencing component 40a. When the silencing component 40a is installed at the upstream side 301, the clearance opening 40c on it matches the heat dissipation fins 90 at the upstream side 301, so that the installed silencing component 40a can be positioned.

[0081] To facilitate a detailed description of the process by which the muffler component 40a transforms into the muffler cylinder 40b after being retracted, this embodiment refines the specific structure of the muffler component 40a. Since the muffler component 40a is fan-shaped before being retracted, refer to... Figure 11 The unfolded silencing component 40a includes a small end 40d, a large end 40e, and a main body 40f connected between the small end 40d and the large end 40e, with a clearance opening 40c provided on the main body 40f.

[0082] The rapid prototyping process of the silencer 40b will be explained in detail below, taking into account the specific installation process.

[0083] Before the muffler 40b is formed, the muffler component 40a is first installed on the lower housing 10. One side of the muffler component 40a is attached to the support portion 70 of the first converging portion 101. The small end 40d of the muffler component 40a abuts against the limiting portion 701 on one side of the support portion 70, while the large end 40e is supported by the first flange 71. At the same time, the clearance 40c matches the installed heat dissipation fins 90. After the small end 40e abuts against the limiting portion 701, the muffler component can ensure that the muffler component is in good condition. After component 40a is installed in place and the clearance opening 40c matches the heat dissipation fin 90, the silencing component 40a can be initially positioned on the lower housing 10 and the assembly personnel can easily determine the assembly position of the silencing component 40a on the lower housing 10. After the silencing component 40a is initially installed on the lower housing 10, the first gathering part 101 plays a role in partially gathering the silencing component 40. The two ends of the main body part 40f of the silencing component 40a will extend out from the first gathering part 101 and will not be constrained.

[0084] Then, the blower assembly 60 is further fixedly installed on the lower housing 10. The outer duct 50 of the blower assembly 60 is fixedly installed on the lower housing 10 through the cover plate 300. The flared part 501 at the end of the outer duct 50 extends into the inner side of the first converging part 101. At this time, the flared part 501 at the end of the outer duct 50 and the support part 70 on the lower housing 10 clamp and fix the silencing member 40a. The silencing member 40a installed inside the first converging part 101 is partially converged and will not shift.

[0085] Further, the upper shell 20 is assembled on the lower shell 10. After the upper shell 20 is spliced ​​on the lower shell 10, the support portion 70 and the second flange 72 on the second gathering portion 201 approach the two ends of the main body portion 40f of the silencing component 40a. When the second gathering portion 201 and the first gathering portion 101 are completely closed, the two ends of the main body portion 40f are encircled and surrounded to form a silencing cylinder 40b. At this time, the annular clamping opening 80 formed by the flared portion 501 and the support portion 70 on the lower shell 10 and the upper shell 20 can clamp and fix one end of the silencing cylinder 40b, and the other end is clamped by the first flange 71 and the second flange 72. At this time, the formed silencing cylinder 40b can be fixed and attached to the inner wall of the upstream side 301.

[0086] Finally, an air inlet shroud 200 is fixedly installed at the end of the upstream side 301. The air inlet shroud 200 and the limiting part 701 respectively limit the two ends of the installed silencer 40b. The air inlet shroud 200 is connected to the connecting seat 73 by a connector such as a screw. The inner end wall of the annular frame 203 of the air inlet shroud 200 abuts against the outer end wall of the silencer 40b. At the same time, the protrusion 202 of the guide vane 201 extends into the silencer 40b and forms an abutting connection with the inner wall of the silencer 40b.

[0087] Finally, the silencer 40b forms the following positioning structure (refer to...) Figure 7 As shown):

[0088] The two ends of the silencer 40b are respectively limited by the limiting part 701 and the annular frame 203 of the air inlet shroud 200;

[0089] The inner sides of both ends of the muffler 40b are pressed against and pressed by the flared part 501 of the outer duct 50 and the protrusion 202 of the guide vane 201.

[0090] The outer sides of both ends of the silencer 40b are held by the support portions 70 of the two housings and the first flange 71 and the second flange 72. In this way, a stable positioning and installation are formed.

[0091] In summary, the outer duct 50 of this application has a flared portion 501 at one end near the upstream side 301. The flared portion 501 extends into the upstream side 301 and forms a clamping opening 80 with the support portion 70. When the silencing member 40a is installed on the lower housing 10, one side of the silencing member 40a is attached to the support portion of the first converging portion 101. After the outer duct 50 is fixedly installed on the lower housing 10, the flared portion 501 at the end of the outer duct 50 clamps and fixes the silencing member 40a with the support portion 70 on the lower housing 10. After the upper housing 20 is spliced ​​onto the lower housing 10, the support portion 70 on the second converging portion 201 is close to the silencing member 40a. The two ends of the silencing component 40a are gathered together, so that the silencing component 40a is surrounded and enclosed to form a silencing cylinder 40b. Therefore, after the lower shell 10 and the upper shell 20 of this application are spliced ​​together, the first gathering part 101 and the second gathering part 201 can enclose the silencing component 40a to form a silencing cylinder 40b. The outer wall of the silencing cylinder 40b is in close contact with the inner wall of the upstream side 301 and will not be loose. The process of the first gathering part 101 and the second gathering part 201 closing together and installing the air inlet cover 200 is the installation process of the silencing cylinder 40b. The silencing cylinder 40b is easy to install and does not need to be glued to the inner wall of the upstream side 301, which improves the installation efficiency.

[0092] Specifically, the mating of the circumferential end faces of the sound-absorbing components is mainly controlled through the following methods:

[0093] 1. Shell structure guidance and positioning

[0094] The first closing portion 101 of the lower housing 10 and the second closing portion 201 of the upper housing 20 play a crucial guiding role in the closing process of the silencing component 40a. The silencing component 40a has a fan-shaped structure, and in the initial stage of installation, one side of it is attached to the support portion 70 of the first closing portion 101. When the upper and lower housings are spliced, the first closing portion 101 and the second closing portion 201 gradually approach each other, causing the silencing component 40a to be gradually curled. This curling process is carried out under the constraint of the first closing portion 101 and the second closing portion 201, ensuring that the opposite ends of the silencing component 40a can be connected along a predetermined path, ultimately forming a silencing cylinder 40b.

[0095] The radially extending first flange 71 and second flange 72 respectively provided at the ends of the first gathering part 101 and the second gathering part 201 also play an auxiliary positioning role in the docking of the muffler 40a. One end of the muffler 40b is clamped between the first flange 71 and the second flange 72, so that the circumferential end face of the muffler 40a can be accurately docked under the restriction of the first flange 71 and the second flange 72 during the process of being rolled up and surrounded, forming a complete muffler 40b structure.

[0096] 2. Fit between the support section and the flared section

[0097] The outer duct 50 has a flared portion 501 at one end near the upstream side 301. The flared portion 501 extends into the upstream side 301 and forms a clamping opening 80 between it and the support portion 70. During the installation of the noise-reducing component 40a, it first adheres to the support portion 70 of the first convergence portion 101. After the outer duct 50 is installed in place, the flared portion 501 cooperates with the support portion 70 to clamp and fix the noise-reducing component 40a.

[0098] This clamping action not only prevents the muffler component 40a from shifting, but also controls the shape of the muffler component 40a to a certain extent, ensuring that its circumferential end faces can be tightly joined when it is closed. After the muffler component 40a is encircled and closed to form the muffler cylinder 40b, the annular clamping opening 80 formed by the flared part 501 and the support part 70 continues to clamp and fix one end of the muffler cylinder 40b, ensuring the stability of the muffler cylinder 40b structure and indirectly ensuring a good connection of its circumferential end faces.

[0099] 3. Limiting function of the air inlet hood

[0100] The air inlet shroud 200 is installed at the ends of the first converging portion 101 and the second converging portion 201, and limits the end of the silencer cylinder 40b. The guide vanes 201 of the air inlet shroud 200 have a protrusion 202 on the side facing the silencer cylinder 40b. When the air inlet shroud 200 is connected and installed, the protrusion 202 extends into the silencer cylinder 40b and forms an abutting connection with the inner wall of the silencer cylinder 40b.

[0101] Meanwhile, the outer end wall of the silencer 40b abuts against the inner end wall of the annular frame 203 of the air inlet hood 200. This multi-directional contact and limiting effect constrains the silencer 40b at both ends, further ensuring the tightness of the circumferential end face after the silencer component 40a is closed, and preventing loosening or poor connection during use.

[0102] 4. Axial limiting of the limiting part

[0103] A limiting part 701 is provided on one side of the support part 70. The connection end face of the upstream side 301 and the downstream side 302 of the installation channel 30 is stepped. The stepped connection end face cooperates with the limiting part 701 to provide a clear reference and limit for the axial position of the silencer 40b in the installation channel 30.

[0104] When the muffler component 40a is installed, its small end 40d abuts against the limiting part 701. This axial limiting can ensure the accurate axial position of the muffler component 40a during the process of the muffler component 40a being retracted and enclosed, thereby helping to accurately connect its circumferential end face, making the enclosing process of the muffler cylinder 40b more stable and accurate.

[0105] 5. Positioning assistance for the avoidance area

[0106] When the silencing component 40a is installed at the upstream side 301, its clearance opening 40c needs to align with the heat dissipation fins 90 at the upstream side 301. This alignment serves as an important basis for the initial positioning of the silencing component 40a on the lower housing 10, facilitating the assembly personnel to accurately determine the assembly position of the silencing component 40a on the lower housing 10. This ensures that the silencing component 40a is in a relatively accurate position during the initial installation stage, laying the foundation for the subsequent accurate docking of its circumferential end faces.

[0107] During the process of the silencing component 40a being gradually closed and enclosed by the first closing part 101 and the second closing part 201 to form the silencing cylinder 40b, the existence of the clearance opening 40c is equivalent to providing a specific reference mark. Since the position of the clearance opening 40c is fixed and predetermined (corresponding to the heat dissipation fins 90), when the two ends of the silencing component 40a gradually approach and dock during the closing process, the clearance opening 40c can guide the circumferential docking direction of the silencing component 40a to a certain extent, which helps to ensure the docking of the circumferential end faces of the silencing cylinder 40b.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A garden blower, comprising: Lower housing; The upper housing, together with the lower housing, forms an installation channel, which includes an upstream side and a downstream side that are interconnected. The lower housing is characterized by having a first retractable portion located on the upstream side, and the upper housing is characterized by having a second retractable portion located on the upstream side; A sound-absorbing component suitable for flexural deformation is positioned at the first or second convergence portion. When the lower shell is spliced ​​with the upper shell, the first and second gathering parts gradually approach each other to gradually curl the silencing component. The opposite ends are joined together to form a silencing cylinder, so that the inner wall of the silencing cylinder formed by the joining is a smooth and continuous annular surface, and the outer wall of the silencing cylinder is in contact with the inner wall of the first and second gathering parts.

2. The garden blower according to claim 1, characterized in that, The installation channel is equipped with a blower assembly, which includes an outer duct and a drive motor and a fan located in the outer duct. The air inlet of the blower assembly extends into the upstream side and forms an abutment connection with the inner wall of the adjacent part of the silencer.

3. The garden blower according to claim 2, characterized in that, The inner walls of the first and second gathering parts are provided with support parts. After the first and second gathering parts are closed, the support parts cover and support the outside of the muffler.

4. The garden blower according to claim 3, characterized in that, The outer duct has a flared end near the upstream side, which extends into the upstream side and forms a clamping opening with the support. The clamping opening can clamp and fix one end of the muffler.

5. The garden blower according to claim 4, characterized in that, The flared portion extends radially toward the inner wall on the upstream side.

6. The garden blower according to any one of claims 3 to 5, characterized in that, A limiting part is provided on one side of the support part, and the limiting part limits the end of the muffler.

7. The garden blower according to claim 1, characterized in that, An air inlet hood is installed at the ends of the first and second converging portions away from the downstream side, and the air inlet hood limits the end of the silencer.

8. The garden blower according to claim 7, characterized in that, The first and second gathering portions are respectively provided with radially extending first and second flanges at their ends, and one end of the silencer is clamped between the first and second flanges; Multiple connecting seats are provided on the end faces of the first flange and the second flange facing the air inlet shroud for connecting and installing the air inlet shroud.

9. The garden blower according to claim 8, characterized in that, The air inlet shroud has a protrusion on the side facing the silencer cylinder. The protrusion is arranged in a ring shape, which is suitable for extending into the silencer cylinder and forming an abutment connection with the inner wall of the silencer cylinder when the air inlet shroud is connected and installed on the connecting seat.

10. The garden blower according to claim 9, characterized in that, The air inlet shroud includes an annular frame and the guide vanes disposed within the annular frame. When the air inlet shroud is connected and installed on the connecting seat, the outer end wall of the silencer abuts against the inner end wall of the annular frame.

11. The garden blower according to claim 2 or 3, characterized in that, A controller is provided at the first or second gathering part; The silencing component has an opening corresponding to the controller, so that the surface of the controller is exposed in the main air duct. The opening is configured as a positioning opening required for installing the silencing component.

12. The garden blower according to claim 11, characterized in that, The diameter of the upstream side gradually decreases from the end furthest from the duct to the end closest to the duct; The silencing component has a fan-shaped structure, and the silencing component is formed into a cone-shaped silencing cylinder after being surrounded by the first and second converging parts.

13. A garden blower, comprising: Lower housing; The upper shell, after being spliced ​​with the lower shell, forms an installation channel, with one end of the installation channel being the upstream side and the other end being the downstream side; A noise-absorbing component suitable for flexural deformation is positioned on the upstream side; The feature is that one end of the lower housing is provided with a first gathering portion, and one end of the upper housing is provided with a second gathering portion; An outer duct is provided between the lower shell and the upper shell, and a support portion is provided on the inner wall of the first and second converging portions; The outer duct has a flared section at one end near the upstream side, and the flared section extends into the upstream side to form a clamping opening with the support portion; When the noise-reducing component is installed on the lower housing, one side of the noise-reducing component is attached to the support of the first retracting part. After the outer duct is fixedly installed on the lower housing, the flared part at the end of the outer duct and the support on the lower housing clamp and fix the noise-reducing component. At the same time, the middle part of the noise-reducing component is partially retracted by the first retracting part, and both ends of the noise-reducing component are in an unretracted state. After the upper shell is attached to the lower shell, the support portion on the second gathering part approaches the silencing component and gathers the two ends of the silencing component, so that the silencing component is surrounded and enclosed to form a silencing cylinder, and the clamping port clamps and fixes one end of the silencing cylinder.

14. The garden blower according to claim 13, characterized in that, Heat dissipation fins are provided at the first or second retractable portion, and electronic components are installed inside the upper or lower housing. The heat dissipation fins are located on one side of the electronic components and on the upstream side. The silencing component has a clearance opening corresponding to the heat dissipation fins, and the clearance opening is configured as a positioning opening required for installing the silencing component. When the silencing component is installed on the lower housing, the clearance on the silencing component is aligned with the heat dissipation fins.

15. The garden blower according to claim 13, characterized in that, The diameter of the upstream side gradually decreases from the end away from the outer duct to the end closer to the outer duct; the silencing component has a fan-shaped structure, and the silencing component is formed into a conical silencing cylinder after being surrounded by the first converging part and the second converging part.

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