Crushing device

Abstract

Disclosed is a shredding apparatus, particularly a foldable-to-retract shredding apparatus, which overcomes a drawback of an existing shredding apparatus that cannot be made further compact or miniaturized due to limitation of support frame. The shredding apparatus disclosed herein includes a shredder assembly, a support assembly, and a frame assembly; the shredder assembly includes a motor, a power compartment, a material introducing section, a shredder body, and a particle discharging section; the support assembly is connected to the shredder assembly; the frame assembly and the support assembly are securely connected to support the shredder assembly; an open space is left in front of the support assembly; the shredder assembly may pass through first axis of the support assembly to rotate in the open space; the shredder assembly has a first position where it enters an operating state and a second position where it enters a retracted state and may switch therebetween; in the operating state, the shredder body rotates with the electric motor; the material is introduced via the material introducing section, shredded by the shredder body, and discharged out from the particle discharging section.

Description

FIELD

[0001] The subject matter described herein relates to a shredding apparatus, and more particularly relates to a foldable-to-retract shredding apparatus.BACKGROUND

[0002] A garden shredding apparatus is inconvenient to transport and store owing to its excessive height and bulky dimension. A conventional technology has provided a shredding apparatus with its shredder assembly foldable and retractable into a collection bin, which partially overcomes the bulkiness disadvantage of the shredding apparatus after being retracted, e.g., Chinese invention patent application No. CN 202110306249.5.

[0003] However, conventional technologies still have various drawbacks. For example, in an operating state, a particle outlet opening of the shredder assembly would be occluded by a collecting section, so that the discharging status as well as the shredded particle collecting status in the collecting section cannot be observed. Secondly, the support portion of the shredding apparatus is generally of a frame structure, where the shredder assembly may rotate about one end of the support portion, while in the retracted state, the shredder assembly is fixed to the opposite end to thereby lock the retracted state. However, that design requires avoiding interference between the shredder assembly and the frame structure of the support portion so as to prevent collision between the shredder assembly and the support portion during the process of rotating to retract; due to this limitation, the layout of the internal components of the shredder assembly can hardly be made further compact while maintaining the existing performance; as such, the overall size of the shredder assembly can hardly be further reduced. Moreover, some conventional shredding apparatuses adopt a manner of removing the battery to reduce the overall size of the retracted shredder assembly; although that solution can achieve a further compact layout and a reduced size on the basis of rotatable foldability of the shredder assembly, it significantly compromises use convenience of such shredding apparatuses.SUMMARY

[0004] To address at least one of the above and other drawbacks on conventional technologies, this disclosure provides a shredding apparatus.

[0005] This disclosure adopts a solution outlined infra: A shredding apparatus, comprising: a shredder assembly comprising an electric motor, a power compartment, a material introducing section, a shredding section having a shredder body, and a particle discharging section; a support assembly connected to the shredder assembly; and a frame assembly connected to the support assembly to thereby support the shredder assembly; wherein an open space is left in front of the support assembly, the shredder assembly being rotatable in the open space about first axis X1 extending through the support assembly, allowing for the shredder assembly to be switchable between a first position where the shredder assembly enters an operating state and a second position where the shredder assembly enters a retracted state; and in the operating state, the shredder body rotates with the electric motor, wherein a material is introduced via the material introducing section, shredded by the shredder body, and discharged out of the particle discharging section.

[0006] In this technical solution, by leaving an open space in front of the support assembly so that the shredder assembly is rotatable in the open space, no interference occurs between the shredder assembly and the support assembly; as such, the shredder assembly may be reasonably laid out as per sizes and functions of the components thereof, which contributes a more compact internal layout to the shredder assembly, whereby the oversize of the shredding apparatus in the retracted state can be further reduced.

[0007] In some implementations, the frame assembly comprises a chassis portion and a support portion extending upward from the chassis portion, the support assembly being securely connected to an extreme end of the support portion, an open accommodation space being defined between the chassis portion and the support portion under the first axis X1; in the operating state, at least a portion of the particle discharging section resides and is exposed in the accommodation space; and in the retracted state, the shredder body is received in the accommodation space.

[0008] In some implementations, in the operating state, orthographic projections of the electric motor and the shredder body on the chassis portion fall within a contour of the chassis portion.

[0009] In some implementations, an avoidance notch is formed on the support portion, and in the retracted state, at least a portion of the particle discharging section passes through the avoidance notch.

[0010] In some implementations, a particle collection bag is removably attached in the accommodation space; in the retracted state, the particle collection bag migrates out of the accommodation space; and a hanger is provided on the particle discharging section, the hanger being configured to hang the particle collection bag.

[0011] In some implementations, in the operating state, the electric motor is disposed at one side proximal to the first axis X1, the power compartment and the electric motor are disposed at a same side, and the shredder body is disposed at a side distal from the first axis X1.

[0012] In some implementations, the support assembly comprises a support base to which the shredder assembly is securely connected, the support base being rotatable about the first axis X1.

[0013] In some implementations, a locking member is provided on the support assembly, the locking member being configured to lock the shredder assembly when the shredder assembly is disposed in the first position or in the second position.

[0014] In some implementations, an unlock switch is further provided on the support assembly; and when the shredder assembly is locked in the first position, the locking member switches on the unlock switch.

[0015] In some implementations, vertical distance L4 from an outlet terminal of the particle discharging section to a lower end surface of the shredder body ranges from 50mm to 300mm.

[0016] In some implementations, the shredder assembly further comprises a housing and a handle, the handle being provided thereon with a grip portion available for being gripped, the handle being rotatable about third axis X3 relative to the housing.

[0017] In some implementations, the first axis X1 and the third axis X3 are parallel.

[0018] In some implementations, in the operating state, the handle is locked tightly on the housing; and in the retracted state, the handle is rotatable relative to the housing.

[0019] In some implementations, a control panel is provided on the shredder assembly, and an avoidance notch configurable to expose the control panel is provided on the handle; and when the handle is locked tightly on the housing, the control panel is exposed in the avoidance notch.

[0020] In some implementations, an inlet port is arranged on the material introducing section, and an avoidance notch configurable to expose the inlet port is provided on the handle; and when the handle is locked tightly on the housing, the inlet port is exposed in the avoidance notch.

[0021] In some implementations, a latch member is provided on the shredder assembly, and in the operating state, the latch member is configurable to lock the handle tightly on the housing.

[0022] In some implementations, a stopper is provided on the shredder assembly, the stopper being configurable to stop the handle to limit a rotatable angle of the handle.

[0023] In some implementations, the support assembly comprises a wheel; and in the retracted state, the stopper stops the handle so that plane P1 created by any point on the grip portion and the third axis X3 crosses the wheel.

[0024] In some implementations, in the retracted state, when the handle is stopped by the stopper, an included angle between the handle and a ground surface is less than or equal to 75°.

[0025] In some implementations, in the operating state, distance L2 between the third axis X3 and a center of the grip portion is greater than or equal to 150mm.

[0026] In some implementations, the shredder assembly further comprises a housing and a shredding section driven by the electric motor, the electric motor and the shredding section being both accommodated in the housing, a hinged flap lid being provided at a side of the housing proximal to the shredding section, the flap lid being openable to expose at least a portion of the shredding section.

[0027] In some implementations, the shredder body is of a hollow cylindrical shape, the shredder body comprising a blade holder and a plurality of shredder blades which are distributed axially and held on the blade holder, the shredder body being provided with an opening extending in an axial direction, the opening being positioned in correspondence to the flap lid.

[0028] In some implementations, the shredding section further comprises a shredder casing, the shredder casing having an accommodation cavity that is configured to receive the shredder body, the shredder casing comprising a material inlet opening corresponding to the material introducing section and a particle outlet opening corresponding to the particle discharging section.

[0029] In some implementations, the plurality of shredder blades are distributed circumferentially around the blade holder.

[0030] In some implementations, when the flap lid is securely closed, a particle discharge gap is formed between the flap lid and the opening; shredded particles are discharged via the opening, through the particle discharge gap, and out of the particle discharging section.

[0031] In some implementations, width L5 of the particle discharge gap is greater than or equal to 10mm.

[0032] In some implementations, a protection switch is further provided on the shredder assembly; when the flap lid is securely closed, the protection switch is activated; when the flap lid is open, the protection switch is inactivated; and the protection switch is configured such that under activation of the protection switch, the shredding apparatus is energized to enter a standby state or the operating state, and under inactivation of the protection switch, the shredding apparatus is deenergized.

[0033] In some implementations, a fastening member is further provided on the flap lid; when the flap lid is securely closed, the fastening member is operable to lock the flap lid securely while activating the protection switch.

[0034] In some implementations, the flap lid is pivotal about axis X4, vertical distance L3 between the axis X4 and a lower end surface of the shredder body is greater than or equal to 10mm.

[0035] In some implementations, a protection switch is further provided on the shredder assembly, when the flap lid is securely closed, the protection switch is inactivated; when the flap lid is open, the protection switch is activated; and the protection switch is configured such that under inactivation of the protection switch, the shredding apparatus is energized to enter a standby state or the operating state, and under activation of the protection switch, the shredding apparatus is deenergized.

[0036] In some implementations, the shredding section comprises a cutting chamber communicating between the material introducing section and the particle discharging section; the shredder assembly further comprises a stationary cutting member and a transmission system, the shredder body being a moving cutting member; and the stationary cutting member is adjustably mounted on the housing; the moving cutting member comprises an internal cavity and at least one cutting unit, the at least one cutting unit being distributed at a peripheral outer side of the moving cutting member, the cutting unit being provided with at least one cutting edge configured to cut a to-be-cut material, the internal cavity being disposed adjacent to the cutting unit and proximal to a center of axis of the moving cutting member, the internal cavity having a space receiving cut particles of the to-be-cut material; an interval area created between the at least one cutting unit is further arranged on the moving cutting member, a bottom portion of the to-be-cut material being admitted into the internal cavity via the interval area; and the transmission system comprises a first transmission assembly configured to transmit a torque of the electric motor to the moving cutting member.

[0037] In some implementations, an included angle a formed by a connection line between two ends of the cutting edge and the axis of the moving cutting member is less than or equal to 45°.

[0038] In some implementations, the cutting unit comprises a front cutting-edge line, and the stationary cutting member is arranged thereon with a stationary cutting-edge line fitted with the front cutting-edge line, the front cutting-edge line being formed of a linear arc-shaped profile, the stationary cutting-edge line being formed of a linear arc-shaped profile corresponding to the front cutting-edge line, wherein stationary cutting point D defined by an end point of the stationary cutting-edge line proximal to the moving cutting member is intimately attached to the front cutting-edge line.

[0039] In some implementations, the shredding apparatus further comprises an adjusting member configured to adjust a position of the stationary cutting member, a bottom portion of the stationary cutting member being rotatably connected on the housing, an end portion of the adjusting member being secured to the stationary cutting member, the adjusting member being telescopically provided on the housing to perform positional adjustment of the stationary cutting member, the adjusting member being a rigid member or an elastic member.

[0040] In some implementations, the moving cutting member further comprises a baffle plate, the baffle plate being configured to baffle shredded particles of the to-be-cut material so that the shredded particles are discharged out of the moving cutting member.

[0041] In some implementations, the first transmission assembly comprises an epicyclic gear train and a final output shaft, the final output shaft being connected to the moving cutting member to transmit the torque of the electric motor to the moving cutting member.

[0042] In some implementations, the shredding apparatus further comprises a feed system configured to feed the to-be-cut material to the moving cutting member where the to-be-cut material is shredded, the feed system comprising a feeding member, the feeding member being movably provided on the housing to control a spacing between the feeding member and the stationary cutting member so as to be adapted to admit different sizes of to-be-cut materials.

[0043] In some implementations, the shredding apparatus further comprises a mount on which the feeding member and the moving cutting member are secured, the mount rotating about an axis of the moving cutting member; an elastic reset member is arranged between the mount and the housing, the elastic reset member driving the feeding member to move closer to the stationary cutting member and pressing the to-be-cut material tightly; and an arc-shaped chute is further arranged on the housing, the mount being slidingly disposed in the arc-shaped chute to limit a rotational angle of the feeding member.

[0044] In some implementations, the transmission system further comprises a second transmission assembly, the second transmission assembly being arranged between the moving cutting member and the feeding member, the second transmission assembly being set as a belt-pulley transmission; the second transmission assembly comprises a first pulley connected to the moving cutting member, a second pulley connected to the feeding member, and a belt for power transmission; and the second transmission assembly performs power transmission between the moving cutting member and the feeding member via the first pulley, the second pulley, and the belt.

[0045] In some implementations, the transmission system further comprises a second transmission assembly arranged between the moving cutting member and the feeding member, the second transmission assembly comprising at least two groups of belt-driven pulleys, the second transmission assembly comprising a first group of pulleys, a second group of pulleys, and a belt; by actuating the belt, the first group of pulleys are moved toward the second group of pulleys to implement variable-speed movement of the pulleys.

[0046] In some implementations, the shredder body comprises: a front blade plate; a rear blade plate arranged opposite the front blade plate; and a plurality of blades supported between the front blade plate and the rear blade plate; wherein the shredder body is a splitable assembly and has a hollow cylindrical structure.

[0047] In some implementations, the blades rotate about a pivoting center G, and cutting edges of the blades during rotating constitute a cylindrical profile of equal diameter.

[0048] In some implementations, the blade has a central division line that has an angle in a range from 30° to 50° relative to a tangential rotating direction of the blade.

[0049] In some implementations, the shredding section further comprises a stationary cutter, the shredder body being fitted with the stationary cutter to perform an action of cutting and crushing the material; one end surface of the stationary cutter has an edge engaging the blade to thereby create a contour edge, distance H between the contour edge and the pivoting center G of the shredder body being less than 10mm.

[0050] In some implementations, a gap allowing for shredded particles to pass through is present between two neighboring blades.

[0051] In some implementations, the shredder body comprises: a rear blade plate arranged opposite the the front blade plate; and a plurality of blades distributed at intervals and supported between the front blade plate and the rear blade plate; wherein the shredder body is a splitable assembly and has a hollow cylindrical structure; wherein a minimum interval between two neighboring blades on a section V-V radially crossing the shredder body is greater than 25mm.

[0052] In some implementations, a number of the blades is less than or equal to 7.

[0053] In some implementations, the shredder body has a non-unitarily formed structure, the shredder body comprising: a front blade plate; a rear blade plate arranged opposite the front blade plate; and a plurality of blades distributed at intervals and detachably supported between the front blade plate and the rear blade plate.

[0054] In some implementations, the shredder body comprises: a front blade plate; a rear blade plate arranged opposite the front blade plate; and a plurality of blades supported between the front blade plate and the rear blade plate; wherein the front blade plate, the rear blade plate, and the blades are metallic members, the blades being formed by stamping, die-casting, or laser cutting.

[0055] In some implementations, thickness W of the shredder body ranges from 3mm to 8mm.BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Fig. 1 is a first schematic diagram of a shredding apparatus in an operating state in some implementations of this disclosure; Fig. 2 is a first sectional view of the shredding apparatus in the operating state in some implementations of this disclosure; Fig. 3 is a first schematic diagram of the shredding apparatus in a retracted state in some implementations of this disclosure; Fig. 4 is an exploded view of the shredding apparatus in some implementations of this disclosure; Fig. 5 is a schematic diagram of a combination of a support assembly and a frame assembly in some implementations of this disclosure; Fig. 6 is an exploded view of the support assembly and the frame assembly in some implementations of this disclosure; Fig. 7 is a second schematic diagram of the shredding apparatus in the operating state in some implementations of this disclosure; Fig. 8 is a second schematic diagram of the shredding apparatus in the retracted state in some implementations of this disclosure; Fig. 9 is a second sectional view of the shredding apparatus in the operating state in some implementations of this disclosure; Fig. 10 is a schematic diagram of the shredding apparatus with its flap lid being open in some implementations of this disclosure; Fig. 11 is an exploded view of a shredding section in some implementations of this disclosure; Fig. 12 is a schematic diagram of the shredding section in some implementations of this disclosure; Fig. 13 is a schematic diagram of a shredder in some implementations of this disclosure; Fig. 14 is a structural schematic diagram of the shredding apparatus in some implementations of this disclosure; Fig. 15 is a first type of sectional view of the shredding apparatus in some implementations of this disclosure; Fig. 16 is a second type of sectional view of the shredding apparatus in some implementations of this disclosure; Fig. 17 is a third type of sectional view of the shredding apparatus in some implementations of this disclosure; Fig. 18 is a structural schematic diagram of a cutting system in this disclosure; Fig. 19 is a structural schematic diagram of a moving cutting member in this disclosure; Fig. 20 is a front view of the moving cutting member in this disclosure; Fig. 21 is a structural schematic diagram of a second transmission assembly in this disclosure; Fig. 22 is a schematic stereoscopic diagram of a work head assembly of the shredding apparatus according to one implementation of this disclosure; Fig. 23 is a schematic side view of a shredder assembly in Fig. 22; Fig. 24 is a schematic split diagram of the shredder assembly in Fig. 22; Fig. 25 is a schematic stereoscopic view of a stationary cutter and a shredder assembly according to one implementation of this disclosure; Fig. 26 is a schematic split diagram of the stationary cutter and the shredder assembly in Fig. 25; Fig. 27 is a schematic sectional view along line V-V of Fig. 25; Fig. 28 is a schematic view of the shredder assembly in Fig. 27 rotating counterclockwise by a certain angle, which gives a comparative structural analysis between 37° and 60° of blade angle C; Fig. 29 is a schematic structure of a cut segment with C = 37° in Fig. 28; Fig. 30 is a schematic structure of a cut segment with C = 60° in Fig. 28; Fig. 31 is a schematic view of the stationary cutter and the shredder assembly in Fig. 27, in which height H of the stationary cutter is set to 5mm and 18mm; Fig. 32 is a schematic structure of the material and the shredder assembly in Fig. 27, where 5 blades are provided with the angle C = 37°; Fig. 33 is a schematic structure of the material and the shredder assembly in Fig. 27, where 8 blades are provided with the angle C = 60°. DETAILED DESCRIPTION OF EMBODIMENTS

[0057] Hereinafter, the present disclosure will be described in further detail through specific implementations with reference to the accompanying drawings.First Implementation

[0058] As illustrated in Figs. 1 to 3, a shredding apparatus according to this implementation comprises a shredder assembly 100, a support assembly 200, and a frame assembly 300. The support assembly 200 is connected to the shredder assembly 100, the frame assembly 300 and the support assembly 200 are securely connected to support the shredder assembly 100, and an open space 201 is left in front of the support assembly 200, the shredder assembly 100 being freely rotatable in the open space 201 about first axis X1 extending through the support assembly 200. Specifically, the shredder assembly 100 comprises a housing 110, an electric motor 120, a power compartment 130, a shredding section 190 having a shredder body 140, a material introducing section 150, and a particle discharging section 160. The electric motor 120, the power compartment 130, and the shredder body 140 are accommodated in the housing 110. The power compartment 130 comprises a battery interface 131 and an accommodation cavity accommodating a battery pack 132, the battery pack 132 being located in the power compartment 130 to power the shredding apparatus.

[0059] The shredder assembly 100 is rotatable about the first axis X1 relative to the support assembly 200. When the shredder assembly 100 is flipped upward about the first axis X1 till a first position, the shredder assembly 100 is disposed in an operating state, a larger portion of the shredder assembly 100 being located above the first axis X1. The material introducing section 150, the shredder body 140, and the particle discharging section 160 being sequentially arranged from top to down. The electric motor 120 actuates the shredder body 140 to rotate about second axis X2, the second axis X2 being substantially horizontally disposed. A to-be-shredded material is charged from the material introducing section 150, cut and comminuted by the spinning shredder body 140, and discharged via the particle discharging section 160. When the shredder assembly 100 is flipped downward about the first axis X1 till a second position, the shredder assembly 100 is disposed in a retracted state, the second axis X2 being substantially vertically disposed, a larger portion of the shredder assembly 100 being located under the first axis X1, the shredder body 140 being located under the first axis X1, whereby height of the shredding apparatus is significantly reduced.

[0060] By leaving an open space 201 in front of the support assembly 200 so that the shredder assembly 100 may rotate in the open space 201, the shredder assembly 100 may achieve a more compact internal layout by reasonably arranging its components as per their sizes and functions, further reducing the overall size of the shredding apparatus in the retracted state.

[0061] In some other implementations, a stationary cutter is further provided in the shredder assembly; the material fed between the shredder body and the stationary cutter is cut and comminuted into shredded particles with relative movement therebetween.

[0062] In some other implementations, a particle removing shaft is further provided in the shredder assembly, the particle removing shaft being located close the underside of the shredder body to remove the shredded particles adhered around the shredder body.

[0063] In some other implementations, the electric motor 120 drives the shredder body 140 to rotate via a speed reduction transmission mechanism. A transmission mechanism with a high transmission ratio is preferably adopted, which requires the electric motor 120 adopt a high-speed motor. More preferably, the transmission mechanism adopts a planetary gearset.

[0064] Preferably in this implementation, Fig. 2 illustrates the operating state, in which the longitudinal cross-sectional contour of the particle discharging section 160 has a shape that is increasingly narrowed from top to down; this facilitates gathering of the falling shredded particles, so that the shredded particles less likely scatter around.

[0065] Preferably in this implementation, vertical distance L4 from a lower end surface 141 of the shredder body to an outlet terminal 163 of the particle discharging section 160 is preferably set in a range from 50mm to 300mm, i.e., 50mm≤L4≤300mm. By controlling the vertical distance from the lower end surface 141 of the shredder body to the outlet terminal 163 of the particle discharging section 160 within a reasonable range, an operator, who stirs the shredded particles in a particle collection bag 400 or clears the shredded particles adhered to the outlet terminal 163 of the particle discharging section 160 while the equipment is operating, does not accidentally extend his hand or a tool into the shredder body 140, which would otherwise incur a safety risk.

[0066] In some other implementations, a bag holder 162 is provided at a bottom portion of the housing, an accommodation space being defined between the housing 110 and the bag holder 162 to accommodate unused particle collection bags 400, so that the operator may fetch a particle collection bag 400 conveniently, which improves the operator's experience.Second Implementation

[0067] Figs. 1 - 6 illustrate an implementation based upon the implementation described supra. In this implementation, the frame assembly 300 comprises a chassis portion 301 and a support portion 302, the support portion 302 being formed by upward extension of the chassis portion 301, the chassis portion 301 being configured to mount a foot pad and / or a wheel 305. The support assembly 200 is securely connected to an upper end of the support portion 302, an open accommodation space 310 being defined under the first axis X1 between the chassis portion 301 and the support portion 302.

[0068] In the operating state, at least a portion of the particle discharging section 160 is disposed in the accommodation space 310. Specifically, a discharge opening is provided at a terminal end of the particle discharging section 160, the discharge opening being arranged in the accommodation space 310.

[0069] In the retracted state, a larger portion of the shredder assembly 100 is disposed in the accommodation space 310. Specifically, the shredder body 140, the material introducing section 150, and the particle discharging portion 160 are disposed in the accommodation space 310, and the electric motor 120 and the power compartment 130 are at least partially disposed in the accommodation space 310.

[0070] Specifically, the frame assembly 300 includes two bent-formed steel tubes and a plurality of connection reinforcing members 303; the two steel tubes being contoured in a symmetrically mirrored manner. The straightened segments of the two steel tubes and the connection reinforcing members 303 are securely connected to form the chassis portion 301 of the frame assembly 300, and the upward snaking segments of the two steel tubes and the connection reinforcing members 303 form the support portion 302 of the frame assembly 300. The support portion 302 further comprises cantilever segments at the ends of the steel tubes, the support assembly 200 being securely connected to the cantilever segments of the steel tubes such that the frame assembly 300 supports the shredder assembly 100. Specifically, the two steel tubes form the open accommodation space 310 under the first axis X1, the straightened segments of the two tubes substantially constituting the length of the accommodation space 310, the two upward snaking segments of the two tubes substantially constituting the height of the accommodation space 310, the interval between the two tubes substantially constituting the width of the accommodation space 310.

[0071] Preferably in this implementation, in the operating state, a particle collection bag 400 is detachably attached in the accommodation space 310; in the retracted state, the particle collection bag 400 migrates out of the accommodation space 310; and a hanger 161 is provided on an outer wall of the particle discharging section 160, the hanger 161 being configured to hang the particle collection bag 400. With the hanger 161 hanging the particle collection bag 400, a conventional large-size collection bin 5-15 is abandoned, which achieves effects of less manufacturing procedures, reduced manufacturing costs, and lower product price, and also realizes energy conservation and emission reduction; meanwhile, the hanger 161 frees the operator from handling and moving the heavy collection bin 5-15 to dump the shredded particles, thereby mitigating the operator's burden of work, making the operator more comfortable in work, and bettering the product's use experience.

[0072] In some other implementations, the frame assembly 300 may also adopt an A-bracket structure.

[0073] In some other implementations, the chassis portion 301 of the frame assembly 300 may also be a unitary piece of a sheet material.

[0074] In some other implementations, the support portion 302 may also be formed by one steel tube, one steel beam, or another structure.

[0075] The chassis portion 301 and the support portion 302 extending upward from the chassis portion 301 contribute a pyramid-like stable structure to the frame assembly 300. This structure may provide an effective support to the running shredder assembly 100 while ensuring its stability and reliability. The open accommodation space 310, which is defined between the chassis portion 301 and the support portion 302 under the first axis X1 to accommodate the shredder assembly 100, facilitates observing the discharging status of the particle discharging section 160 and the collection status of the discharged particles while the shredder is operating.Third Implementation

[0076] Figs. 1-3 illustrate an implementation based upon the second implementation. In this implementation, in the operating state, orthographic projections of the electric motor 120 and the shredder body 140 on the chassis portion 301 fall within the contour of the chassis portion 301 so that the center of gravity of the shredder assembly 100 falls within the contour of the chassis portion 301, which improves body stability and reduces vibration induced by spinning of the electric motor 120 and the shredder body 140 during running of the shredding apparatus so that the body of the operating shredding apparatus less likely shakes. In the retracted state, the orthographic projections of the electric motor 120 and the power compartment 130 on the chassis portion 301 fall within the contour of the chassis portion 301 so that the center of gravity of the shredder assembly 100 falls within the contour of the chassis portion 301, which further improves body stability of the shredding apparatus in the retracted state and lowers the odds of toppling when the operator moves the shredding apparatus in the retracted state.Fourth Implementation

[0077] Figs. 1-3 illustrate an implementation based upon the second implementation. In this implementation, an avoidance notch 304 is formed on the support portion 302; in the retracted state, the particle discharging section 160 at least partially passes through the avoidance notch 304. The particle discharging section 160 requires an enough length to allow for concentration of the discharged particles without scattering around; the avoidance notch 304 formed on the support portion 302 allows for the particle discharging section 160 to at least partially pass through in the retracted state, which avoids collision and interference between the long particle discharging section 160 in the retracted state and the support portion 302, thereby facilitating the retraction operation.Fifth Implementation

[0078] Figs. 1-2 illustrate an implementation based upon the implementations noted supra. In this implementation, the support assembly 200 has one side proximal to the first axis X1 and an opposite side which is opposite the side proximal to the first axis X1 and distal from the first axis X1, the electric motor 120 being disposed at the side proximal to the first axis X1, the power compartment 130 and the electric motor 120 being disposed at a same side, the shredder body 140 being disposed at the side distal from the first axis X1. By arranging the power compartment 130 and the electric motor 120 at one side of the shredder assembly, and arranging the material introducing section 150, the shredder body 140, and the particle discharging section 160 at the opposite side of the shredder assembly 100, the shredder assembly 100 is formed into a square-like structure, giving the shredder assembly 100 a more compact internal layout, whereby the overall size of the shredder assembly 100 can be more miniaturized. Moreover, due to greater weight of the battery pack 132 and the electric motor 120, the center of gravity of the shredder assembly 100 would be too distant from the first axis X1, which requires higher structural strength of the support assembly 200 and thusly increases its weight and cost; to prevent this situation, by arranging the electric motor 120 at the side proximal to the first axis X1, arranging the power compartment 130 and the electric motor 120 at the same side, and arranging the shredder body 140 at the side distant from the first axis X1, this implementation may effectively bias the center of gravity of the shredder assembly 100 towards the first axis X1, which can further alleviate the load imposed upon the support assembly 200, thereby reducing the weight and manufacturing cost of the support assembly 200.Sixth Implementation

[0079] Figs. 1-4 illustrates an implementation based upon the implementations described supra. In this implementation, the support assembly 200 comprises a support base 210, the support base 210 being rotatable about the first axis X1, the shredder assembly 100 and the support base 210 being securely connected so that the shredder assembly 100 can rotate about the first axis X1 relative to the support assembly 200. The support base 210 may be adapted to different models of shredder assemblies 100. By arranging the support base 210 on the support assembly 200, the shredder assemblies of different models may be adapted to the same support assembly 200, which further reduces the cost of designing and developing the product and lowers the price of the product, which also facilitates dismantling, maintenance, and replacement of the shredder assembly 100.Seventh Implementation

[0080] Figs. 1 to 5 illustrate an implementation based upon the sixth implementation described supra. In this implementation, the support assembly 200 comprises a first rotary shaft 202 and a locking member 203, the first rotary shaft 202 being mounted on the support portion 302 along the direction of the first axis X1, the support base 210 being sleeved on the first rotary shaft 202 and rotatable along the first axis X1. By arranging the locking member 203 on the support assembly 200, arranging a fitting member 211 secured on the support base 210, and correspondingly arranging on the fitting member a first locking slot 2111 corresponding to the first position and a second locking slot 2112 corresponding to the second position, when the shredder assembly 100 is disposed in the first position, the locking member 203 may pass through the first locking slot 2111, such that the support base 210 is limited and immobilized by the first rotary shaft 202 and the locking member 203, whereby the shredder assembly 100 is locked in the first position. When the shredder assembly 100 is disposed in the second position, the locking member 203 may pass through the second locking slot 2112, such that the support base 210 is limited and immobilized by the first rotary shaft 202 and the locking member 203, whereby the shredder assembly 100 is locked in the second position. By arranging the first rotary shaft 202 and the locking member 203 for the support assembly 200 and arranging the corresponding fitting member 211 on the support base 210, the shredder assembly 100 achieves a stable position locking and a convenient position shift.

[0081] Preferably in this implementation, the locking member 203 further comprises a reset unit; the operator can turn the shredder assembly 100 by unplugging the locking member 203; after the shredder assembly 100 completes position shift, the locking member 203 may automatically reset to lock the shredder assembly in the shifted position.

[0082] Preferably in this implementation, the support assembly 200 is further provided thereon with an unlock switch 212; when the shredder assembly 100 is locked in the first position, the locking member 203 at least partially passes through the first locking slot 2111 to engage and trigger the unlock switch 212, whereby the shredding apparatus is energized to enter a standby state or an operating state.

[0083] The unlock switch 212 arranged on the support assembly 200 prevents accidental activation of the shredder assembly 100 when the shredder is not disposed in the first position of the operating state, so that no safety accidents would occur.

[0084] Preferably in this implementation, a first damper 213 is further provided on the support assembly 200, the first damper 213 being tightly pressed against the fitting member 211; the first damper 213 provides a damping force while the shredder assembly 100 is rotating, which offsets a fraction of the center of gravity of the downward rotating shredder assembly 100, thereby easing the operator's work in operating the shredding apparatus.

[0085] Preferably in this implementation, a second damper 214 is further provided on the support assembly 200, the second damper 214 being tightly pressed in the support base 210; the second damper 214 provides a damping force while the shredder assembly 100 is rotating, which neutralizes a fraction of the center of gravity of the downward rotating shredder assembly 100, thereby easing the operator's work in operating the shredding apparatus.Eighth Implementation

[0086] As illustrated in Figs. 7 and 8, a shredding apparatus according to this implementation comprises a shredder assembly 100 and a support structure which supports the shredder assembly 100, the shredder assembly 100 comprising a housing 100, an electric motor, a power compartment, a shredder body, a material introducing section 150, and a particle discharging section 160. The support structure comprises a support assembly 200 and a frame assembly 300, the support assembly 200 being connected to the shredder assembly 100, the frame assembly 300 and the support assembly 200 being securely connected to support the shredder assembly 100. The electric motor, the power compartment, and the shredder body are accommodated in the housing 110, the power compartment being configured to accommodate a battery to power the shredding apparatus. The electric motor may drive, directly or via a transmission mechanism, the shredder body to rotate; the material is charged from the material introducing section, shredded by the shredder body, and discharged out of the particle discharging section 160. The shredder assembly 100 may rotate about the first axis X1 so as to be disposed in a first position where the shredder assembly 100 enters an operating state or in a second position where the shredder assembly 100 enters a retracted state. The shredder assembly 100 further comprises a handle 170 arranged on the housing 110, the handle 170 being provided thereon with a grip portion 171 available for being gripped, the handle 170 being rotatable about third axis X3 relative to the housing 110. The grip portion 171 is formed of a cylindrical shape to facilitate the operator to grip.

[0087] In this implementation, the support assembly 200 is provided with a locking part, the locking part being configurable to lock the shredder assembly 100 in the first position or the second position, so that the shredder assembly 100 in the operating state or the retracted state maintains stationary relative to the support assembly 200 and the frame assembly 300.

[0088] The frame assembly 300 comprises a chassis portion 301 and a support portion 302 formed by an upward extended segment of the chassis portion 301, the support portion 302 being securely connected to the support assembly 200. The frame assembly 300 further comprises a foot pad and a wheel 305. When the shredding apparatus in the retracted state is moving, the wheel 305 may rotate to reduce friction with the ground surface, easing the operator's moving work. The foot pad is configured to provide a support force when the shredder stands still.

[0089] The handle 170 may rotate relative to the housing 110. The operator may constantly hold the grip portion 171 when folding and retracting the shredder assembly 100 with the horizontal height of the grip portion 171 maintaining substantially consistent, so that the operator does not feel much fatigue when folding and retracting the shredder assembly 100, further improving the operator's use experience. Moreover, the operator may lift the handle 170 to move the shredding apparatus in the retracted state; compared with a non-rotatable handle 170, the rotatable handle 170 may automatically adjust its orientation as per the operator's body height and posture, which thus may alleviate the operator's fatigue when moving the shredding apparatus.

[0090] Preferably in this implementation, the first axis X1 is parallel to the third axis X3, and the rotating direction of the handle 170 is consistent with the rotating and folding direction of the shredder assembly 100, which eases the operator's work in folding and retracting the shredder assembly 100.

[0091] Preferably in this implementation, the support structure further comprises a damper unit or an energy accumulator to offset a fraction of center of gravity of the shredder assembly during its folding and retracting process, thereby easing the operator's work in folding and retracting the shredder assembly 100.

[0092] To alleviate the operator's sense of fatigue in folding and retracting the shredder assembly 100, the handle 170 needs to be set with a sufficient length so as to provide a larger torque to reduce the force needed to be applied by the operator. Preferably in this implementation, distance L2 between the third axis X3 and the center of the grip portion 171 in the operating state is preferably greater than or equal to 150mm, i.e., L2 ≥ 150mm, more preferably L2 ≥250mm, further preferably L2≥400mm. By setting the handle 170 with a sufficient length, a larger torque is provided, which requires less force imposed by the operator in folding and retracting the shredder assembly 100 and thus mitigates the operator's sense of fatigue.

[0093] As illustrated in Figs. 7 and 8, in an implementation of this disclosure based upon the implementation described supra, in the operating state, the handle 170 is locked tightly on the housing 110; in the retracted state, the handle 170 may rotate relative to the housing 110. By locking the handle 170 tightly on the housing 110 in the operating state, the handle 170 does not rotate so that running of the shredding apparatus would not be affected, while rotatability of the handle 170 relative to the housing 110 in the retracted state facilitates the operator to move the shredding apparatus.

[0094] A latch member 180 is provided on the shredder assembly 100; in the operating state, the latch member 180 may lock the handle 170 tightly on the housing 110. Specifically, after unplugging the latch member 180 and disposing the handle 170 in the locked position, the operator presses down the latch member 180 to snap-fit the latch member 180 with the handle 170, whereby the latch member 180 locks the handle 170 tightly on the housing 110. To fold and retract the shredder assembly 100, the operator unplugs the latch member 180 and then rotates the handle 170 upward, whereby the handle 170 is released from the locked state and may rotate relative to the housing 110.

[0095] A control panel 111 is provided on the shredder assembly 100, the shredding apparatus being controlled via the control panel 111; a first avoidance notch 172 is provided on the handle 170; when the handle 170 is locked tightly on the housing 110, the control panel 111 is exposed in the first avoidance notch 172. By providing the first avoidance notch 172 which may expose the control panel 111 on the handle 170, the operator may operate the shredding apparatus in the operating state.

[0096] A feed port 151 is further provided on the shredder assembly 100, and a second avoidance notch is provided on the handle 170; when the handle 170 is tightly locked on the housing 110, the feed port 151 is exposed in the second avoidance notch 173. By providing the second avoidance notch 173 on the handle 170 which can expose the feed port 151, the operator may charge a to-be-shredded material from the feed port 151 while the shredder assembly 100 is running.

[0097] In some other implementations, an avoidance notch which avoids both of the control panel 111 and the feed port 151 is provided on the shredder assembly 100.

[0098] As illustrated in Figs. 7 and 8, in one implementation of this disclosure based upon the implementation described supra, a stopper is provided on the shredder assembly 100, the stopper being configurable to stop the handle 170 to limit a rotatable angle of the handle 170.

[0099] Specifically, the stopper is a stop surface 112 arranged on the housing 110; when the handle 170 rotates by a certain angle, the stop surface 112 abuts against the handle 170 to thereby limit further rotation of the handle 170.

[0100] In some other implementations, the stopper may also be a protrusion structure provided on the housing 110 or a stop member separately fixed on the housing 110.

[0101] The stopper to limit the rotatable angle of the handle 170 prevents an excessive rotation angle of the handle 170 which would otherwise increase the fatigue of the operator when moving the shredding apparatus.

[0102] Preferably, the rotatable angle of the handle 170 is less than or equal to 180°; more preferably, the rotatable angle of the handle 170 is less than or equal to 165°; further preferably, the rotatable angle of the handle 170 is less than or equal to 150°; and still further preferably, the rotatable angle of the handle 170 is less than or equal to 135°. By limiting the rotatable angle of the handle 170, the handle 170 would not rotate excessively, which further mitigates fatigue of the operator during moving the shredding apparatus.

[0103] Preferably, in the retracted state, when the stopper stops the handle 170, the included angle between the handle 170 and the ground surface is less than or equal to 75°. More preferably, the included angle between the handle 170 and the ground surface is less than or equal to 60°. Further preferably, the included angle between the handle 170 and the ground surface is less than or equal to 45°. By limiting the included angle between the handle 170 and the ground surface in the retracted state, the handle 170 would not rotate excessively, which further mitigates fatigue of the operator during operating; moreover, the appropriate angle between the handle 170 and the ground surface eases the operator's operation when moving the shredding apparatus in the retracted state.

[0104] Preferably, the wheel 305 is configured such that in the retracted state, when the handle 170 is stopped by the stopper, plane P1 constructed by any point on the grip portion 171 and the third axis X3 crosses the position where the wheel 305 is located. The foot pad is disposed under the third axis X3. With this setting, to move the retracted shredding apparatus, the operator may lift the handle 170 to lift up one end of the chassis portion 301 of the frame assembly 300 distant from the wheel 305 with the wheel 305 as the pivot, which reduces the friction of the moving shredding apparatus with the ground surface and thusly eases the operator's moving work. More preferably, the plane constructed by the center of the grip portion 171 and the third axis X3 crosses the center of the axis of the wheel 305.Ninth Implementation

[0105] As illustrated in Figs. 9-13, a shredding apparatus according to one implementation of the disclosure comprises a shredder assembly 100, a support assembly 200, and a frame assembly 300, the shredder assembly 100 comprising a housing 110, an electric motor 120, a shredding section 190, a power compartment 130, a material introducing section 150, and a particle discharging section 160, the electric motor 120 and the shredding section 190 being both provided in the housing 110. A battery socket is provided in the power compartment 130, in which a battery is plugged to power the shredding apparatus. The shredding section 190 comprises a shredder 191 and a shredder casing 192, the shredder 191 being accommodated in the shredder casing 192, the shredder 191 being the shredder body 140 described in the first implementation, the electric motor 120 driving the shredder 191 to rotate. A to-be-shredded material is charged from the material introducing section 150, shredded by the shredder 191, and discharged out of the particle discharging section 160 along a first discharging path 193. A hinged flap lid 114 is provided at one side of the housing 110 proximal to the shredding section 190; the flap lid 114, when being opened till the open position, may expose at least a portion of the shredding section 190, and the flap lid 114, when being securely closed to the closed position, may seal the shredder assembly 100 to prevent the shredded particles from overbrimming out of the periphery of the flap lid 114.

[0106] The shredder 191 has a hollow cylindrical structure; the shredder 191 comprises a blade holder and a plurality of shredder blades 1913 axially arranged, the shredder blades 1913 being secured on the blade holder and distributed circumferentially around the blade holder; the shredder 191 has an opening 1914 extending in the axial direction, the position where the opening 1914 is positioned corresponding to the position of the flap lid 114. The material charged into the shredding apparatus is first shredded by the shredder blades 1913, then the shredded particles fall into a hollow area 1910 of the shredder 191 where they are shredded by the shredder blades 1913 for the second time, and finally the finely shredded particles fall into the particle discharging section 160 where they are discharged out.

[0107] Specifically, the blade holder comprises a first holding portion 1911 and a second holding portion 1912, a plurality of shredder blades 1913 being held between the first holding portion 1911 and the second holding portion 1912, the shredder blades 1913 being axially arranged. The second holding portion 1912 has a circular shape with an opening 1914 in the center, the hollow area 1910 of the shredder 191 being positioned in correspondence to the position of the opening 1914, the opening 1914 being positioned in correspondence to the position of the flap lid 114. When the flap lid 114 is opened, the opening 1914 or the hollow area 1910 being at least partially exposed.

[0108] By setting the shredder 191 with a hollow cylindrical shape and arranging the shredder blades 1913 in the axial direction, the material will be cut twice during the shredding process, which may further enhance shredding efficiency of the shredding apparatus; by positioning the opening 1914 on the shredder 191 to correspond to the position of the flap lid 114, the opening 1914 or the hollow area 1910 may be at least partially exposed when the flap lid 114 is opened, which facilitates the operator to clear the shredded particles adhered on the shredder 191.

[0109] Preferably in this implementation, the shredder blades 1913 are circumferentially distributed and secured to the blade holder. Specifically, the shredder blades 1913 are held between the first holding portion 1911 and a second holding portion 1912 and distributed at even intervals in the circumferential direction. By distributing the shredder blades 1913 circumferentially around the blade holder, the shredder blades 1913 may maintain a substantially consistent rotating speed, which prevents the shredded particles from adhering to the slowly-rotating components of the shredder 191, effectively reducing the frequency of the operator's cleaning the shredder 191.

[0110] Preferably in this implementation, at least some of the shredder blades 1913 extend beyond the outer sides of the first holding portion 1911 and / or the second holding portion 1912; or, at least some of the shredder blades 1913 are close to or parallel to the outer sides of the first holding portion 1911 and / or the second holding portion 1912. By arranging some of the shredder blades 1913 at the outer side of the blade holder, the rotational speed of the shredder blades 1913 can be raised, which makes it less likely for the shredded particles to adhere to the shredder blades 1913.

[0111] The shredder casing 192 has an accommodation cavity to receive the shredder 191; a material inlet opening 1921 and a particle outlet opening 1922 are formed on the shredder casing 192, the material inlet opening 1921 being disposed above the shredder 191, the particle outlet opening 1922 being disposed under the shredder 191. Specifically, the shredder casing 192 comprises a first casing portion 192.1 and a second casing portion 192.2, the first casing portion 192.1 and the second casing portion 192.2 being closed to form an accommodation cavity configured to receive the shredder 191, the material inlet opening 1921 being formed above the accommodation cavity at a position corresponding to the material introducing section 150, the particle outlet opening 1922 being formed under the accommodation cavity at a position corresponding to the particle discharging section 160; the electric motor 120 drives the first casing portion 192.1 to rotate to bring the shredder 191 to rotate; and an avoidance notch 1923 is arranged on the second casing portion 192.2 to expose the hollow area 1910 of the shredder 191.

[0112] By arranging the accommodation cavity for receiving the shredder 191 on the shredder casing 192, the shredder 191 is contributed a secure structural support, which ensures safety and stability of the shredder 191 spinning at a high velocity; by arranging, on the shredder casing 192, the material inlet opening 1921 corresponding to the material introducing section 150 and the particle outlet opening 1922 corresponding to the particle discharging section 160, the shredded particles resulting from the material accessing the shredder 191 via the material introducing section 150 are directly discharged out of the particle discharging section 160, which provides a smooth path for inletting and discharging the material, thereby improving material processing efficiency during the shredding process.

[0113] The shredding apparatus may have a rotatable fold structure, i.e., the shredder assembly 100 may be rotatably folded relative to the support structure, which shrinks the retracted size; the shredding apparatus may also have a non-foldable structure.

[0114] The electric motor 120 may drive the shredder 191 to rotate directly or via a transmission mechanism. A transmission mechanism with a high transmission ratio is preferably adopted, so that the electric motor 120 may select a high-speed motor. Preferably, the transmission is performed by a planetary gearset.

[0115] As illustrated in Figs. 9-13, in an implementation of this disclosure based upon the implementation described supra, when the flap lid 114 is securely closed, a particle discharge gap 113 is formed between the flap lid 114 and the opening 1914; the shredded particles may be discharged via the opening 1914, which, after passing through the particle discharge gap 113, are discharged out of the particle discharging section 160. During the shredding process, if the material is excessively charged, the shredded particles resulting from the first shredding fall into the hollow area 1910 in the shredder 191; since the shredded particles have a low density and a light mass, they are relatively light in weight, so that the secondary shredding has a slower processing speed than the first shredding; consequently, more shredded particles would be accumulated in the hollow area 1910, which would increase the rotating load of the shredder 191, thereby deteriorating the shredding efficiency of the shredding apparatus. The excessive shredded particles would also cause clogging of the shredder 191, lowering the rotational velocity of the shredder 191, even causing stall of the electric motor 120, further incurring a serious consequence. By arranging the particle discharge gap 113 between the flap lid 114 and the opening 1914, a second discharging path 1131 may be formed in the shredder assembly 100, so that the rotating shredder 191 may stir up the shredded particles in the hollow area 1910, and during the stirring process, a fraction of the shredded particles may fall into the particle discharge gap 113 from the opening 1914 and are then discharged out of the particle discharging section 160.

[0116] By arranging the particle discharge gap 113 between the flap lid 114 and the opening 1914, if the to-be-shredded material is excessively charged, the shredded particles failing to be shredded in time in the secondary shredding may be discharged via the particle discharge gap 113, which may lower the risk of deteriorating the shredding efficiency of the shredding apparatus due to the excessive material charged, lower the risks of clogging the shredder 191 and stalling the electric motor 120 caused by the excessive material, and thus enhance the shredding efficiency of the shredding apparatus.

[0117] The material always includes solid organic wastes such as fallen leaves and twigs, which, if not processed in time or due to weather reasons, likely contains high moisture. The shredded particles would engage the flap lid 114 and are likely stuck thereto during the process of being discharged via the second discharging path 1131; if the particle discharge gap 113 is too small, it will get jammed or clogged soon, further affecting the discharging effect of the particle discharge gap 113. Preferably in this implementation, the particle discharge gap 113 L5 is greater than or equal to 10mm; more preferably, L5 ≥ 50mm; further preferably, L5 ≥ 100mm. With a larger particle discharge gap 113, in a case of processing the material with a high moisture content, the odds of jamming or clogging the particle discharge gap 113 due to adherence of shredded particles on the flap lid 114 will be lowered, thereby mitigating the impact of the particle discharge gap 113 on the discharging effect.

[0118] As illustrated in Figs. 9 -12, in an implementation of this disclosure based upon the implementation described supra, a protection switch 1132 is further provided on the shredder assembly 100. When the flap lid 114 is securely closed, the protection switch 1132 is triggered; when the flap lid 114 is open, the protection switch 1132 is not triggered.

[0119] The protection switch 1132 is configured such that in the activated state, the shredding apparatus is energized to enter a standby state or an operating state, and in the inactivated state, the shredding apparatus is deenergized.

[0120] It may be understood that, the protection switch 1132 may be arranged on the housing 110 or may be arranged on the shredding section 190.

[0121] By setting the protection switch 1132 such that only when the flap lid 114 is securely closed, can the shredding apparatus be energized, while when the flap lid 114 is open, the shredding apparatus cannot be deenergized to operate, the shredder 191 cannot rotate when the operator accidentally activates the shredding apparatus during cleaning the shredder assembly, which prevents a safety risk; in addition, the shredded particles would not exit via the flap lid 114 once the shredding apparatus is activated while the flap lid 114 is not securely closed.

[0122] Preferably in this implementation, a fastening member 1133 is further provided on the flap lid 114; when the flap lid 114 is closed, the fastening member 1133 locks the flap lid 114 securely and triggers the protection switch 1132. Specifically, the protection switch 1132 and a pusher 1134 are arranged on the shredder casing 192, and the fastening member 1133 is arranged on the flap lid 114. The fastening member 1133 is exemplarily a knob which securely locks the closed flap lid 114, the knob pushing the pusher 1134 to trigger the protection switch 1132. By locking the flap lid 114 securely and triggering the protection switch 1132 with the fastening member 1133, when the shredding apparatus is operating, the flap lid 114 would not be accidentally opened, thereby preventing a safety risk or preventing the shredded particles from running out via the flap lid 114.

[0123] To prevent the opened flap lid 114 from engaging the shredder 191 causing damages to the shredder 191 or the flap lid 114, it is preferable in this implementation to set vertical distance L3 between the axis X4 about which the flap lid 114 rotates and a lower end surface of the shredder 191 to be greater than or equal to 10mm, i.e., L3 ≥ 10mm. Specifically, a hinge is provided for the flap lid 114, the flap lid 114 being connected to the shredder assembly 100 via the hinge and rotatable about the axis X4 of the hinge, the vertical distance L3 between the hinge and the lower end surface of the shredder 191 is greater than or equal to 10mm. Preferably, L3 ≥50mm; preferably, L3≤100mm. The axis X4 as set facilitates opening or closing the flap lid 114; a larger vertical distance L3 ensures enough gap between the lower end surface of the shredder 191 and the flap lid 114. In this way, the opened flap lid 114 does not engage the shredder 191, which lowers a risk of damaging the shredder 191 or the flap lid 114.

[0124] If the flap lid 114 is closed but not securely locked by the fastening member 1133, vibration would occur upon start of the shredding apparatus, causing the flap lid 114 open, a safety risk is likely induced or the shredded particles are likely discharged from the flap lid 114; to prevent occurrence of this situation, it is preferable in this implementation to set the center of gravity of the flap lid 114 in the closed position to rest outside the axis L3, so that the flap lid 114 in the closed position has a tendency of being opened outwardly; as such, when the fastening member 1133 fails to securely lock the flap lid 114, the flap lid 114 would be opened automatically. In this way, the flap lid 114 will not be closed if not securely locked by the fastening member 1133, and vibration of the machine cannot induce opening of the flap lid 114, which thusly prevents occurrence of a safety risk or discharging of the shredded particles from the flap lid 114.

[0125] In some other implementations, an elastic mechanism configured to automatically open the flap lid 114 is provided on the flap lid 114.

[0126] In an implementation of this disclosure different from the preceding implementation, when the flap lid 114 is in the securely closed state, the protection switch 1132 is not triggered; when the flap lid 114 is in the open state, the protection switch 1132 is triggered; the protection switch 1132 is configured to energize the inactivated shredding apparatus into a standby state or an operating state and to deenergize the activated shredding apparatus. The protection switch 1132 may be arranged on the shredder assembly 100; when the flap lid 114 is opened, it engages and triggers the protection switch 1132; when the flap lid 114 is securely closed, it migrates without triggering the protection switch 1132.

[0127] Due to provision of the protection switch 1132, only when the flap lid 114 is securely closed, can the shredding apparatus be energized, and while when the flap lid 114 is open, the shredding apparatus is deenergized from operating. With this setting, the shredder 191 will not rotate when the operator cleaning the shredder assembly 100 accidentally activates the shredding apparatus, thereby preventing a safety risk. In addition, the shredded particles will not be discharged from the flap lid 114 when the shredding apparatus is activated while the flap lid 114 is not securely closed.Tenth Implementation

[0128] In an implementation illustrated in Figs. 14 - 21 based upon the first implementation, the shredder assembly further comprises a transmission system and a stationary cutting member 4-32 configured to support a to-be-cut material 4-9 and assist in cutting; and a material introducing passage 4-11 and a cutting chamber 4-12 are provided on the housing 110, the material introducing passage 4-11 communicating with the cutting chamber 4-12. In this implementation, the material introducing passage 4-11 is arranged upstream of the cutting chamber 4-12, which facilitates a to-be-cut material 4-9 introduced in the material introducing passage 4-11 to enter the cutting chamber 4-12 under the action of gravity. The shredder body 4-3 is provided in the cutting chamber 4-12, the shredder body 4-3 being configured to cut the to-be-cut material 4-9. The electric motor 4-4 is configured to drive the shredder body 4-3. The transmission system comprises a first transmission assembly 4-51 configured to transmit a torque of the electric motor 4-4 to the shredder body 4-3. In this implementation, the electric motor 4-4 refers to an electromotor, and the to-be-cut material 4-9 is a twig.

[0129] As illustrated in Fig. 18, a moving cutting member 4-31 is connected to the transmission system. The transmission system facilitates transmitting the torque of the electric motor 4-4 to the moving cutting member 4-31. The stationary cutting member 4-32 is adjustably attached on the housing.

[0130] The moving cutting member 4-31 comprises an internal cavity 4-313 and at least one cutting unit 4-311, the cutting unit 4-311 being distributed outside the peripheral of the moving cutting member 4-31, the internal cavity 4-313 being adjacent to the cutting unit 4-311 and disposed proximal to the center of axis of the moving cutting member 4-31; the internal cavity 4-313 has a space receiving cut particles of the to-be-cut material 4-9; at least one interval area 4-312 created between the at least one cutting unit 4-311 is further arranged on the circumference of the moving cutting member 4-31, the cutting unit 4-311 being configured to perform a cutting action of the moving cutting member 4-31 with respect to the to-be-cut material 4-9; each cutting unit 4-311 at least comprises one cutting blade 4-3111, the cutting blade 4-3111 being configured to cut the to-be-cut material 4-9; the cutting unit 4-311 partitions the circumference of the moving cutting member 4-31 to create the interval area 4-312; arrangement of the interval area 4-312 allows for the to-be-cut material 4-9 to pass through the cutting unit 4-311. The bottom of the to-be-cut material 4-9 enters the internal cavity 4-313 through the interval area 4-312, i.e., during the cutting process, a portion of the to-be-cut material 4-9 enters the internal cavity 4-313, while the remaining portion is left outside the moving cutting member 4-31; as the moving cutting member 4-31 rotates, the cutting blade 4-3111 cuts the to-be-cut material 4-9, while the cut particles of the to-be-cut material 4-9 in the internal cavity 4-313 are discharged via the interval area 4-312 with rotation of the moving cutting member 4-31, which prevents the cut particles of the to-be-cut material 4-9 from clogging the moving cutting member 4-31.

[0131] In this implementation, as illustrated in Fig. 19, the moving cutting member 4-31 is provided with three cutting units 4-311, the three cutting units 4-311 being distributed at even intervals around the outer periphery of the moving cutting member 4-31, neighboring cutting units 4-311 defining the interval area 4-312 via which the to-be-cut material 4-9 passes through the cutting units 4-311.

[0132] As illustrated in Fig. 20, to ensure a smooth cutting torque provided by the moving cutting member 4-31, an included angle a formed by a connecting line between two end points of the cutting blade 4-3111 and the axis of the moving cutting member 4-31 is not greater than 45°. In Fig. 20, point E is one end point of the moving cutting member 4-31, point F is the opposite end point of the cutting blade 4-3111, I is the axis of the moving cutting member 4-31, and the angle a formed by the connecting line between point E and point F and the axis I is not greater than 45°. This angle allows for the cutting blade 4-3111 to progressively penetrate into the to-be-cut material 4-9, which offers a smoother force variation during the cutting process; moreover, this can also buffer dramatic change of the motor load and mitigate the electric impact in the electrical circuit, thereby offering a protection to the power source; meanwhile, the stress imposed on the moving cutting member 4-31 is also mitigated, extending the service life of the shredder body 4-3.

[0133] As illustrated in Fig. 18, to achieve intimate fitting between the moving cutting member 4-31 and the stationary cutting member 4-32, each cutting unit 4-311 at least comprises one front cutting-edge line 4-3112, and the stationary cutting member 4-32 is arranged thereon with a stationary cutting-edge line 4-321 mated with the front cutting-edge line 4-3112, the stationary cutting-edge line 4-321 and the front cutting-edge line 4-3112 being both formed of a linear arc-shaped profile. This setting facilitates intimate fitting between the moving cutting member 4-31 and the stationary cutting member 4-32. A stationary support edge 4-322 is further arranged on the stationary cutting member 4-32. A stationary cutting point D is formed at an intersection between the stationary support edge 4-322 and the stationary cutting-edge line 4-321, i.e., an end point of the stationary cutting-edge line 4-321 proximal to the moving cutting member 4-31 is defined as the stationary cutting point D; in one implementation of this disclosure, the stationary cutting point D is sufficiently intimately fitted with the front cutting-edge line 4-3112 of the moving cutting member 4-31 so that the to-be-cut material 4-9 is more easily cut off, and even a surface with resilient fibers can also be effectively cut off.

[0134] As the moving cutting member 4-31 and the stationary cutting member 4-32 will be worn over time, the gap therebetween will also be enlarged; to ensure intimate fitting between the moving cutting member 4-31 and the stationary cutting member 4-32, an adjusting member 4-6 configured to push the stationary cutting member 4-32 is provided on the housing 110, the adjusting member 4-6 serving to adjust a position of the stationary cutting member 4-32 so that the moving cutting member 4-31 and the stationary cutting member 4-32 always maintain an intimately fitted state; the adjusting member 4-6 may be manually operated or may be automatically pre-tightened.

[0135] In this implementation, the bottom of the stationary cutting member 4-32 is rotatably attached on the housing 110, and an end portion of the adjusting member 4-6 is secured to the stationary cutting member 4-32. The adjusting member 4-6 is telescopically arranged in the housing 110 to realize position adjustment of the stationary cutting member 4-32. By arranging the adjusting member 4-6 telescopically in the housing 110 and securing one end of the adjusting member 4-6 to the stationary cutting member 4-32, it facilitates the adjusting member 4-6 to telescopically push the stationary cutting member 4-32 to rotate, which realizes position change of the stationary cutting member 4-32, ensuring that the stationary cutting member 4-32 is always closely fitted with the moving cutting member 4-31.

[0136] Furthermore, in this implementation, as illustrated in Figs. 16 and 17, the bottom of the stationary cutting member 4-32 is hinged on the housing 110, and an adjustment hole is provided on the housing 110. The adjusting member 4-6 passes through the adjustment hole and is then secured to the stationary cutting member 4-32. The adjusting member 4-6 is thread-connected to the adjustment hole. By rotating the adjusting member 4-6, the position of the stationary cutting member 4-32 can be adjusted, which facilitates pushing the stationary cutting member 4-32 to intimately fit the moving cutting member 4-31, thereby facilitating distance control between the stationary cutting member 4-32 and the moving cutting member 4-31 so as to maintain an appropriate fit degree; this ensures effective cutoff of the to-be-cut material, particularly a material with a resilient surface. In addition, the adjusting member 4-6 may be a rigid body, or an elastic body, or a combination thereof.

[0137] Alternatively, in another implementation of this disclosure, the adjusting member 4-6 is automatically pre-tightened; the adjusting member 4-6 passes through the housing 110 and is then connected to the stationary cutting member 4-32; an electric pusher is arranged on the adjusting member 4-6 to push the adjusting member 4-6 to telescope to thereby adjust the position of the stationary cutting member 4-32, whereby the stationary cutting member 4-32 is intimately fitted with the moving cutting member 4-31.

[0138] In addition, as illustrated in Fig. 15, a baffle plate 4-8 is further provided outside the moving cutting member 4-31; the baffle plate 4-8 can block circumferential rotation of the material; blocked by the baffle plate 4-8, the cut particles of the material are radially discharged out of the interval area of the moving cutting member 4-31, which prevents the finely cut particles from being accumulated in the interval area 4-312 of the moving cutting member 4-31 so as not to affect the cutting efficiency.

[0139] In one implementation of this disclosure, the shredding apparatus further comprises a feed system, the feed system being disposed in the cutting chamber 4-12 and configured to feed the to-be-cut material 4-8 into the shredder body 4-3. The feed system comprises a feeding member 4-2 that is movably provided on the housing 110. A distance between the feeding member 4-2 and the stationary cutting member 4-32 is controlled to allow for different sizes of to-be-cut materials 4-9 to pass through. In this implementation, the feeding member 4-2 is specifically slidingly arranged on the housing 110 with an arc-shaped sliding trajectory. The to-be-cut material 4-9 enters the shredder body 4-3 via a passage defined between the feeding member 4-2 and the stationary support edge 4-322.

[0140] In this implementation, a ratchet 4-21 is provided at an outer side of the feeding member 4-2; provision of the ratchet 4-21 increases the friction between the feeding member 4-2 and the to-be-cut material 4-9, thereby facilitating the feeding member 4-2 to feed the to-be-cut material 4-9 into the shredder body 4-3 where it is cut. The feed system is rotated by a transmission system; with co-action of the ratchet 4-21, the feeding member 4-2 forcibly conveys the to-be-cut material 4-9 into the shredder body 4-3 where it is cut.

[0141] As illustrated in Figs. 16 and 17, the to-be-cut material 4-9 in Fig. 16 and the to-be-cut material 4-9 in Fig. 17 are of different sizes; during the material feeding process, the feed system may adjust the distance between the feeding member 4-2 and the stationary cutting member 4-32 as per the sizes of different to-be-cut materials 4-9, so that the materials of different sizes can pass through the passage between the feeding member 4-2 and the stationary cutting member 4-32 into the cutting region.

[0142] In one implementation of this disclosure, the shredding apparatus further comprises a mount 4-7; the feeding member 4-2 and the moving cutting member 4-31 are both fixed on the mount 4-7; the mount 4-7 performs a rotational movement about an axis of the moving cutting member 4-31 so that the feed system slides on the housing 110; the mount 4-7 is configured to support the feeding member 4-2 and the moving cutting member 4-31 to prevent the rotating feeding member 4-2 from interfering with the cutting operation of the moving cutting member 4-31; the mount 4-7 rotates to drive the feeding member 4-2 to slide on the housing 110.

[0143] Furthermore, an elastic reset member is further provided between the mount 4-7 and the housing 110. The elastic reset member contributes the mount 4-7 a constant tendency of moving towards the stationary cutting member 4-32; after the to-be-cut material 4-9 enters the cutting chamber 4-12 via the material introducing passage 4-11, the to-be-cut material 4-9 forces the feeding member 4-2 to move away from the stationary cutting member 4-32, while the elastic reset member imposes a force against the feeding member 4-2 to drive the latter to move close to the stationary cutting member 4-32, whereby the to-be-cut material 4-9 is tightly clamped between the feeding member 4-2 and the stationary cutting member; as such, the to-be-cut materials 4-9 of different sizes can be effectively clamped and fed, and during this process, sliding and resetting of the feeding member 4-2 do not require power supplied by the electric motor 4-4, which reduces energy consumption.

[0144] Furthermore, in another implementation of this disclosure, as illustrated in Figs. 14 and 15, an arc-shaped chute 4-13 is further arranged on the housing 110, the mount 4-7 being slidingly disposed in the arc-shaped chute 4-13. In this implementation, one end of the mount 4-7 where the moving cutting member 4-31 is set is coaxially connected to the moving cutting member 4-31, and another end of the mount 4-7 where the feeding member 4-2 is provided is slidingly disposed in the arc-shaped chute 4-13. The arc-shaped chute 4-13 is set with an arc-shaped structure where the central axis of the moving cutting member 4-31 is the center of the arc, so that the mount 4-7 may rotate about the central axis of the moving cutting member 4-31, which prevents the sliding feeding member 4-2 from interfering with the cutting action of the shredder body 4-3. In addition, provision of the arc-shaped chute 4-13 further facilitates limiting the rotational angle of the mount 4-7, thereby improving reliability of the feed system and extending the service life of the elastic reset member.

[0145] The transmission system comprises a first transmission assembly 4-51, the first transmission assembly 4-51 being configured to transmit a torque of the electric motor 4-4 to the moving cutting member 4-31.

[0146] In one implementation of this disclosure, the first transmission assembly 4-51 comprises an epicyclic gear train and a final output shaft 4-54, the final output shaft 4-54 being connected to the moving cutting member 4-31 to transmit a torque of the electric motor 4-4 to the shredder body 4-3. Transmission via the epicyclic gear train ensures the transmission efficiency, and a plurality of stages of epicyclic gear trains may be arranged to perform reduction transmission as per the rotational speed and torque requirements of the transmission system; and the first transmission assembly 4-51 transmits the required rotational speed and torque to the shredder body 4-3 via the final output shaft 4-54.

[0147] Furthermore, a transmission gear 4-53 is arranged between the electric motor 4-4 and the first transmission assembly 4-51. The electric motor 4-4 transmits power to the first transmission assembly 4-51 via the transmission gear 4-53. To increase a transmission ratio of the transmission system, a plurality of stages of epicyclic gear trains may be arranged for the transmission system. In this implementation, the epicyclic gear train comprises a first planetary gear assembly, a second planetary gear assembly, and a ring gear 4-513. A sun gear is arranged between respective stages of epicyclic gear trains. The transmission gear 4-53 is connected to one end of the output shaft of the electric motor, the electric motor transmitting power to the transmission system via the transmission gear 4-53 at one end of the output shaft. The first planetary gear assembly comprises a first planetary gear 4-511 and a first planetary carrier 4-512. The transmission gear 4-53 drives the first planetary gear 4-511 to rotate about the ring gear 4-513, the first planetary gear 4-511 rotates to drive the first planetary carrier 4-512 to rotate, and the sun gear on the first planetary carrier 4-512 drives the second epicyclic gear train to rotate. Finally, the torque being transmitted to the moving cutting member 4-31 via the final output shaft 4-54.

[0148] In addition, for the sake of system transmission efficiency, this implementation sets the first transmission assembly 4-51 for epicyclic gear train transmission; in another implementation of this disclosure, a reduction transmission solution such as parallel gears or worm gears may be selected for an efficiency-insensitive system.

[0149] The transmission system further comprises a second transmission assembly 4-52, the second transmission assembly being arranged between the moving cutting member 4-31 and a feeding member 4-2 to facilitate transmitting power of the moving cutting member 4-31 to the feeding member 4-2. The second transmission assembly 4-52 is configured to transmit power of the moving cutting member 4-31 to the feeding member 4-2. In one implementation of this disclosure, the second transmission assembly 4-52 is configured as belt transmission, i.e., the second transmission assembly 4-52 comprises a first pulley 4-521 connected to the moving cutting member 4-31, a second pulley 4-522 connected to the feeding member 4-2, and a belt 4-523 configured for power transmission, the first pulley 4-521 being co-axially arranged with the moving cutting member 4-31, the second pulley 4-522 being co-axially arranged with the feeding member 4-2. The second transmission assembly 4-52 implements power transmission between the moving cutting member and the feeding member 4-2 via the first pulley 4-521, the second pulley 4-522, and the belt 4-523, i.e., the first pulley 4-521 and the moving cutting member 4-31 co-act to transmit power to the belt 4-523, the belt 4-523 transmits the power to the second pulley 4-522, and then the second pulley 4-522 transmits the power to the feeding member 4-2. In addition, the first pulley 4-521 and the second pulley 4-522 are both mounted on the mount 4-7.

[0150] In addition, as illustrated in Fig. 21, in another implementation of this disclosure, there is provided a manner of variable speed adjustment in belt-pulley transmission, i.e., the variable speed adjustment is implemented by the second transmission assembly 4-52. The second transmission assembly 4-52 comprises at least two pulley groups, i.e., the pulleys in the second transmission assembly 4-52 may include two or more groups of pulleys 4-523 of equal length; the second transmission assembly 4-52 comprises a first pulley group 4-524, a second pulley group 4-525, and a belt 4-526; the user can realize variable-speed movement of the pulleys by actuating the belt 4-526 to move from the first pulley group 4-524 to the second pulley group 4-525, thereby realizing adjustment of the rotational speed of the feeding member 4-2 and realizing cut length adjustment of the to-be-cut material 4-9. Dependent on different use scenarios, the user may autonomously adjust the sizes of cut particles so as to be adapted to different purposes.

[0151] Alternatively, in another implementation of this disclosure, a different size of cut particles is obtained by changing the feeding member 4-2. Specifically, feeding members 4-2 using gears of different diameters can result in different sizes of cut particles so as to be adapted to different purposes.

[0152] The belt transmission of the second transmission assembly 4-52 is only one manner of ensuring the mounting distance and stroke; in another implementation of this disclosure, other transmission manners such as gearing transmission may also be adopted.Eleventh Implementation

[0153] As illustrated in Figs. 21-24, on the basis of the first implementation, the shredding section further comprises a stationary cutter 5-23. The shredder body 140 is a non-unitarily formed integrated part, mainly comprising a front blade plate 5-31, a rear blade plate 5-33, and an elongated blade 5-32 detachably mounted between the front blade plate 5-31 and the rear blade plate 5-33, the front blade plate 5-31, the rear blade plate 5-33, and the blade 5-32 being formed into a substantially cylindrical configuration. The blade 5-32 is supported and mounted between the front blade plate 5-31 and the rear blade plate 5-33, i.e., an inwardly recessed slot is arranged on two opposite end surfaces of the front blade plate 5-31 and the rear blade plate 5-33, respectively, to accommodate and securely position the two opposite end surfaces of the blade 5-32; in this way, the blade 5-32 is detachably assembled, e.g., by plug-fitting, between the front blade plate 5-31 and the rear blade plate 5-33; this assembly manner facilitates replacement of the blade 5-32. The blade 5-32 may be separately hardened, which simplifies manufacturing and assembly and thus enhances efficiency; meanwhile, the replaceability of the blade 5-32 facilitates production and after-sales service; a user always needs to cut tough objects during use, causing damages to the blade 5-32; replaceability of the blade 5-32 may lower the user's replacement costs.

[0154] As illustrated in Figs. 25-26, a side surface of the stationary cutter 5-23 facing the shredder body 140 is formed by curved plane P1 and curved plane P2; generally, the curved plane P1 has an outwardly convex profile and the curved plane P2 has a correspondingly inwardly concave profile; in addition, a contour edge 5-232 is formed at the intersection between the curved plane P1 and the curved plane P2; the blade 5-32 creates a shearing-like movement on the contour edge 5-232 to cut the vegetation introduced in an operation chamber.

[0155] As illustrated in Fig. 27, the blades 5-32 are of a substantially elongated shape, distributed evenly in an array on the V-V section. Specifically, the blades 5-32 are distributed evenly about the pivoting center G of the shredder body 140; the blade 5-32 has a blade head and a blade tail which are oppositely arranged in the width direction, the blade head is formed with surfaces 5-32a and 5-32b on the section V-V, whereby a cutting edge 5-321 is formed at the blade head position; and a blade handle is formed at the blade tail position.

[0156] Here, given that L1 denotes the central division line between the surfaces 5-32a and 5-32b of the blade 5-32, which is the straight line between the central point of the head and the central point of the tail, and L2 denotes the tangent direction when the tip of the cutting edge 5-321 rotates through the pivoting center G of the shredder body 140, the included angle C between L1 and L2 is set in a range from 30° to 50°.

[0157] As illustrated in Figs. 23, 24, and 27, the blade 5-32 rotates about the pivoting center G, and the cutting edge 5-321 constitutes a circular cylinder structure of equal diameter during rotating.

[0158] Here, the material 5-40 is a cylindrical bar with a diameter of 40mm.

[0159] Here, the rotational speed of the shredder body 140 is preferably about 48rpm.

[0160] As illustrated in Fig. 28, the angle C dictates a difficulty of penetrating the blade 5-32 into the vegetation material 5-40.

[0161] Specifically, the left side of Fig. 28 illustrates a schematic structure when C=37°, and the right side of Fig. 28 illustrates a schematic structure when C=60°.

[0162] In the case of C=37°, when the blade 5-32 rotates through 30° about the pivoting center G, the material 5-40 has a smaller squeezed area 401, so that less squeezing force is needed to overcome for the shredder body 140 to rotate.

[0163] In the case of C=60°, when the blade 5-32 rotates through 30° about the pivoting center G of the shredder body 140, the material 5-40 has a larger squeezed area 401, so that rotation of the shredder body 140 needs to overcome a larger squeezing force; under the larger squeezing force, the material 5-40 is pushed against the curved plane P1 of the stationary cutter 5-23, which creates a relatively large friction, causing the material 5-40 hard to be fed downward, so that the shredder body 140 needs to supply a larger torque and a higher output power.

[0164] As illustrated in Fig. 29, in the case of C=37°, the cut notch 5-402 of the material 5-40 is relatively neat, without a noticeable squeezed area; moreover, the cut section of the material 5-40 in the figure has more loose cracks 5-403, which facilitates decomposition of the cut particles of the material 5-40; it has been revealed that some cracks of excessively squeezed material 5-40 would be densely compressed, which is difficult to process and decompose.

[0165] As illustrated in Fig. 30, in the case of C=60°, the material 5-40 has a noticeable squeezed area 5-401, and the cut particles of the material 5-40 are seriously deformed.

[0166] Therefore, to cut off the material 5-40 more easily, this disclosure finds that the angle C within the range from 30° to 50° is the most preferable, preferably about 37°.

[0167] As illustrated in Fig. 31, given vertical distance H between the contour edge 5-232 of the stationary cutter 5-23 and the pivoting center G of the shredder body 140, and given length D of the cut piece of the material 5-40, it is seen that the greater the H is, the smaller the D is.

[0168] Given that the blade 5-32 starts rotating counterclockwise when engaging the material 5-40 till angle B with respect to the contour edge 5-232 of the stationary blade 5-23, the angle B representing the operating angle of the blade 5-32 in cutting the material 5-40; given that the angle formed by respective lines between the tips of the cutting edges 5-321 of neighboring two blades 5-32 of the shredder body 140 and the pivoting center G of the shredder body 140 is A, here, the shredder body 140 has 5 blades 5-32, then angle A = 72°.

[0169] When H = 5mm, D is about 18mm, and angle B is 78°; in this case, the material 5-40 is fed with a large magnitude for single cutting, and angle B is greater than angle A, which ensures continuity in cutting the material 5-40; before the preceding blade 5-32 completely cuts off the material 5-40, the next blade 5-32 already enters the cutting state.

[0170] When H = 18mm, D is about 12mm, and angle B is 62°; in this case, the material 5-40 is fed with a small magnitude for single cutting, and angle B is less than angle A, which cannot ensure continuity in cutting the material 5-40; before the preceding blade 5-32 completely cuts off the material 5-40, the next blade 5-32 is still in the idle state; however, the cutting force in this case is relatively small.

[0171] Therefore, it is seen that, taking both of the continuity and feed magnitude of cutting the material 5-40 into account, the angle B shall be greater than angle A; now, the cutting effect is particularly good when H is in the range from 2mm to 10mm, preferably about 5mm.

[0172] As illustrated in Fig. 32, an elongated hole-like clearance is present between two neighboring blades 5-32, the elongated hole being provided on the section V-V. The minimum pass distance on the radial section is defined as S, i.e., the spacing between the lines from respective heads and tails of two neighboring blades 5-32 is S.

[0173] Here, given that the shredder body 140 has 5 blades 5-32; given that the angle C is 37°; given that the thickness w of the blade 5-32 is 5mm; given that S is about 30mm; to ease understanding, given that the stationary cutter 5-23 has three blades: blade 5-32a, blade 5-32b, and blade 5-32c; now the material 5-40 is cut into two segments, segment 5-404a and segment 5-404b, the segment 5-404a being located in the elongated hole-like clearance between blade 5-32b and blade 5-32c, the segment 5-404b being located in the elongated hole between the blade 5-32c and blade 5-32d; the blade 5-32a is disposed at the material 5-40 side; as illustrated in the figure; the cut segment 5-404a and the cut segment 5-404b have a tendency of migrating from the shredder body 140 from direction F1 and direction F2 with a larger margin of space, respectively.

[0174] As illustrated in Fig. 33, in comparison with Fig. 32, given that the shredder body 140 has 8 blades 5-32; given that the angle C is 60°; given that the thickness of the blade 5-32 is 5mm; given that S is about 15mm; as illustrated in Fig. 33, the material 5-40 is cut into three segments, cut segment 5-404c, cut segment 5-404d, and cut segment 5-404e, respectively, the cut segment 5-404c being located in the elongated hole between the blade 5-32a and the blade 5-32b, the cut segment 5-404d being located in the elongated hole between the blade 5-32b and the blade 5-32c, the cut segment 5-404e being located in the elongated hole between the blade 5-32c and blade 5-32d; as illustrated in the figure, it is hard for the cut segment 5-404c, the cut segment 5-404d, and the cut segment 5-404e to migrate from the elongated holes between the blades 5-32; in addition, during rotating of the shredder body 140, the cut segment 404c, the cut segment 5-404d, and the cut segment 5-404e squeeze each other, easily causing clogging of the segments.

[0175] Therefore, it is seen from Fig. 32 and Fig. 33 that it is most appropriate to set 5 blades 5-32, and it is appropriate to set the minimum pass distance to be greater than 25mm, preferably 30mm.

[0176] In view of the above, considering cutting efficiency of the shredder body 140 and discharging of the material 5-40, this disclosure finds that an optimum cutting, shredding, and discharging effect is achieved when 5 blades 5-32 are provided, the minimum pass distance S between the blades 5-32 is greater than 25mm, and the angle C is in the range from 30° to 50°.

[0177] In view of the above, this disclosure can improve cutting effect, facilitate shred discharge, and reduce high load operating time through the specific cutter manufacturing process and co-act between specific specifications of cutter structure and angle.

Examples

Embodiment Construction

[0057]Hereinafter, the present disclosure will be described in further detail through specific implementations with reference to the accompanying drawings.

First Implementation

[0058]As illustrated in Figs. 1 to 3, a shredding apparatus according to this implementation comprises a shredder assembly 100, a support assembly 200, and a frame assembly 300. The support assembly 200 is connected to the shredder assembly 100, the frame assembly 300 and the support assembly 200 are securely connected to support the shredder assembly 100, and an open space 201 is left in front of the support assembly 200, the shredder assembly 100 being freely rotatable in the open space 201 about first axis X1 extending through the support assembly 200. Specifically, the shredder assembly 100 comprises a housing 110, an electric motor 120, a power compartment 130, a shredding section 190 having a shredder body 140, a material introducing section 150, and a particle discharging section 160. The electric motor ...

FIELD

[0001] The subject matter described herein relates to a shredding apparatus, and more particularly relates to a foldable-to-retract shredding apparatus.BACKGROUND

[0002] A garden shredding apparatus is inconvenient to transport and store owing to its excessive height and bulky dimension. A conventional technology has provided a shredding apparatus with its shredder assembly foldable and retractable into a collection bin, which partially overcomes the bulkiness disadvantage of the shredding apparatus after being retracted, e.g., Chinese invention patent application No. CN 202110306249.5.

[0003] However, conventional technologies still have various drawbacks. For example, in an operating state, a particle outlet opening of the shredder assembly would be occluded by a collecting section, so that the discharging status as well as the shredded particle collecting status in the collecting section cannot be observed. Secondly, the support portion of the shredding apparatus is generally of a frame structure, where the shredder assembly may rotate about one end of the support portion, while in the retracted state, the shredder assembly is fixed to the opposite end to thereby lock the retracted state. However, that design requires avoiding interference between the shredder assembly and the frame structure of the support portion so as to prevent collision between the shredder assembly and the support portion during the process of rotating to retract; due to this limitation, the layout of the internal components of the shredder assembly can hardly be made further compact while maintaining the existing performance; as such, the overall size of the shredder assembly can hardly be further reduced. Moreover, some conventional shredding apparatuses adopt a manner of removing the battery to reduce the overall size of the retracted shredder assembly; although that solution can achieve a further compact layout and a reduced size on the basis of rotatable foldability of the shredder assembly, it significantly compromises use convenience of such shredding apparatuses.SUMMARY

[0004] To address at least one of the above and other drawbacks on conventional technologies, this disclosure provides a shredding apparatus.

[0005] This disclosure adopts a solution outlined infra: A shredding apparatus, comprising: a shredder assembly comprising an electric motor, a power compartment, a material introducing section, a shredding section having a shredder body, and a particle discharging section; a support assembly connected to the shredder assembly; and a frame assembly connected to the support assembly to thereby support the shredder assembly; wherein an open space is left in front of the support assembly, the shredder assembly being rotatable in the open space about first axis X1 extending through the support assembly, allowing for the shredder assembly to be switchable between a first position where the shredder assembly enters an operating state and a second position where the shredder assembly enters a retracted state; and in the operating state, the shredder body rotates with the electric motor, wherein a material is introduced via the material introducing section, shredded by the shredder body, and discharged out of the particle discharging section.

[0006] In this technical solution, by leaving an open space in front of the support assembly so that the shredder assembly is rotatable in the open space, no interference occurs between the shredder assembly and the support assembly; as such, the shredder assembly may be reasonably laid out as per sizes and functions of the components thereof, which contributes a more compact internal layout to the shredder assembly, whereby the oversize of the shredding apparatus in the retracted state can be further reduced.

[0007] In some implementations, the frame assembly comprises a chassis portion and a support portion extending upward from the chassis portion, the support assembly being securely connected to an extreme end of the support portion, an open accommodation space being defined between the chassis portion and the support portion under the first axis X1; in the operating state, at least a portion of the particle discharging section resides and is exposed in the accommodation space; and in the retracted state, the shredder body is received in the accommodation space.

[0008] In some implementations, in the operating state, orthographic projections of the electric motor and the shredder body on the chassis portion fall within a contour of the chassis portion.

[0009] In some implementations, an avoidance notch is formed on the support portion, and in the retracted state, at least a portion of the particle discharging section passes through the avoidance notch.

[0010] In some implementations, a particle collection bag is removably attached in the accommodation space; in the retracted state, the particle collection bag migrates out of the accommodation space; and a hanger is provided on the particle discharging section, the hanger being configured to hang the particle collection bag.

[0011] In some implementations, in the operating state, the electric motor is disposed at one side proximal to the first axis X1, the power compartment and the electric motor are disposed at a same side, and the shredder body is disposed at a side distal from the first axis X1.

[0012] In some implementations, the support assembly comprises a support base to which the shredder assembly is securely connected, the support base being rotatable about the first axis X1.

[0013] In some implementations, a locking member is provided on the support assembly, the locking member being configured to lock the shredder assembly when the shredder assembly is disposed in the first position or in the second position.

[0014] In some implementations, an unlock switch is further provided on the support assembly; and when the shredder assembly is locked in the first position, the locking member switches on the unlock switch.

[0015] In some implementations, vertical distance L4 from an outlet terminal of the particle discharging section to a lower end surface of the shredder body ranges from 50mm to 300mm.

[0016] In some implementations, the shredder assembly further comprises a housing and a handle, the handle being provided thereon with a grip portion available for being gripped, the handle being rotatable about third axis X3 relative to the housing.

[0017] In some implementations, the first axis X1 and the third axis X3 are parallel.

[0018] In some implementations, in the operating state, the handle is locked tightly on the housing; and in the retracted state, the handle is rotatable relative to the housing.

[0019] In some implementations, a control panel is provided on the shredder assembly, and an avoidance notch configurable to expose the control panel is provided on the handle; and when the handle is locked tightly on the housing, the control panel is exposed in the avoidance notch.

[0020] In some implementations, an inlet port is arranged on the material introducing section, and an avoidance notch configurable to expose the inlet port is provided on the handle; and when the handle is locked tightly on the housing, the inlet port is exposed in the avoidance notch.

[0021] In some implementations, a latch member is provided on the shredder assembly, and in the operating state, the latch member is configurable to lock the handle tightly on the housing.

[0022] In some implementations, a stopper is provided on the shredder assembly, the stopper being configurable to stop the handle to limit a rotatable angle of the handle.

[0023] In some implementations, the support assembly comprises a wheel; and in the retracted state, the stopper stops the handle so that plane P1 created by any point on the grip portion and the third axis X3 crosses the wheel.

[0024] In some implementations, in the retracted state, when the handle is stopped by the stopper, an included angle between the handle and a ground surface is less than or equal to 75°.

[0025] In some implementations, in the operating state, distance L2 between the third axis X3 and a center of the grip portion is greater than or equal to 150mm.

[0026] In some implementations, the shredder assembly further comprises a housing and a shredding section driven by the electric motor, the electric motor and the shredding section being both accommodated in the housing, a hinged flap lid being provided at a side of the housing proximal to the shredding section, the flap lid being openable to expose at least a portion of the shredding section.

[0027] In some implementations, the shredder body is of a hollow cylindrical shape, the shredder body comprising a blade holder and a plurality of shredder blades which are distributed axially and held on the blade holder, the shredder body being provided with an opening extending in an axial direction, the opening being positioned in correspondence to the flap lid.

[0028] In some implementations, the shredding section further comprises a shredder casing, the shredder casing having an accommodation cavity that is configured to receive the shredder body, the shredder casing comprising a material inlet opening corresponding to the material introducing section and a particle outlet opening corresponding to the particle discharging section.

[0029] In some implementations, the plurality of shredder blades are distributed circumferentially around the blade holder.

[0030] In some implementations, when the flap lid is securely closed, a particle discharge gap is formed between the flap lid and the opening; shredded particles are discharged via the opening, through the particle discharge gap, and out of the particle discharging section.

[0031] In some implementations, width L5 of the particle discharge gap is greater than or equal to 10mm.

[0032] In some implementations, a protection switch is further provided on the shredder assembly; when the flap lid is securely closed, the protection switch is activated; when the flap lid is open, the protection switch is inactivated; and the protection switch is configured such that under activation of the protection switch, the shredding apparatus is energized to enter a standby state or the operating state, and under inactivation of the protection switch, the shredding apparatus is deenergized.

[0033] In some implementations, a fastening member is further provided on the flap lid; when the flap lid is securely closed, the fastening member is operable to lock the flap lid securely while activating the protection switch.

[0034] In some implementations, the flap lid is pivotal about axis X4, vertical distance L3 between the axis X4 and a lower end surface of the shredder body is greater than or equal to 10mm.

[0035] In some implementations, a protection switch is further provided on the shredder assembly, when the flap lid is securely closed, the protection switch is inactivated; when the flap lid is open, the protection switch is activated; and the protection switch is configured such that under inactivation of the protection switch, the shredding apparatus is energized to enter a standby state or the operating state, and under activation of the protection switch, the shredding apparatus is deenergized.

[0036] In some implementations, the shredding section comprises a cutting chamber communicating between the material introducing section and the particle discharging section; the shredder assembly further comprises a stationary cutting member and a transmission system, the shredder body being a moving cutting member; and the stationary cutting member is adjustably mounted on the housing; the moving cutting member comprises an internal cavity and at least one cutting unit, the at least one cutting unit being distributed at a peripheral outer side of the moving cutting member, the cutting unit being provided with at least one cutting edge configured to cut a to-be-cut material, the internal cavity being disposed adjacent to the cutting unit and proximal to a center of axis of the moving cutting member, the internal cavity having a space receiving cut particles of the to-be-cut material; an interval area created between the at least one cutting unit is further arranged on the moving cutting member, a bottom portion of the to-be-cut material being admitted into the internal cavity via the interval area; and the transmission system comprises a first transmission assembly configured to transmit a torque of the electric motor to the moving cutting member.

[0037] In some implementations, an included angle a formed by a connection line between two ends of the cutting edge and the axis of the moving cutting member is less than or equal to 45°.

[0038] In some implementations, the cutting unit comprises a front cutting-edge line, and the stationary cutting member is arranged thereon with a stationary cutting-edge line fitted with the front cutting-edge line, the front cutting-edge line being formed of a linear arc-shaped profile, the stationary cutting-edge line being formed of a linear arc-shaped profile corresponding to the front cutting-edge line, wherein stationary cutting point D defined by an end point of the stationary cutting-edge line proximal to the moving cutting member is intimately attached to the front cutting-edge line.

[0039] In some implementations, the shredding apparatus further comprises an adjusting member configured to adjust a position of the stationary cutting member, a bottom portion of the stationary cutting member being rotatably connected on the housing, an end portion of the adjusting member being secured to the stationary cutting member, the adjusting member being telescopically provided on the housing to perform positional adjustment of the stationary cutting member, the adjusting member being a rigid member or an elastic member.

[0040] In some implementations, the moving cutting member further comprises a baffle plate, the baffle plate being configured to baffle shredded particles of the to-be-cut material so that the shredded particles are discharged out of the moving cutting member.

[0041] In some implementations, the first transmission assembly comprises an epicyclic gear train and a final output shaft, the final output shaft being connected to the moving cutting member to transmit the torque of the electric motor to the moving cutting member.

[0042] In some implementations, the shredding apparatus further comprises a feed system configured to feed the to-be-cut material to the moving cutting member where the to-be-cut material is shredded, the feed system comprising a feeding member, the feeding member being movably provided on the housing to control a spacing between the feeding member and the stationary cutting member so as to be adapted to admit different sizes of to-be-cut materials.

[0043] In some implementations, the shredding apparatus further comprises a mount on which the feeding member and the moving cutting member are secured, the mount rotating about an axis of the moving cutting member; an elastic reset member is arranged between the mount and the housing, the elastic reset member driving the feeding member to move closer to the stationary cutting member and pressing the to-be-cut material tightly; and an arc-shaped chute is further arranged on the housing, the mount being slidingly disposed in the arc-shaped chute to limit a rotational angle of the feeding member.

[0044] In some implementations, the transmission system further comprises a second transmission assembly, the second transmission assembly being arranged between the moving cutting member and the feeding member, the second transmission assembly being set as a belt-pulley transmission; the second transmission assembly comprises a first pulley connected to the moving cutting member, a second pulley connected to the feeding member, and a belt for power transmission; and the second transmission assembly performs power transmission between the moving cutting member and the feeding member via the first pulley, the second pulley, and the belt.

[0045] In some implementations, the transmission system further comprises a second transmission assembly arranged between the moving cutting member and the feeding member, the second transmission assembly comprising at least two groups of belt-driven pulleys, the second transmission assembly comprising a first group of pulleys, a second group of pulleys, and a belt; by actuating the belt, the first group of pulleys are moved toward the second group of pulleys to implement variable-speed movement of the pulleys.

[0046] In some implementations, the shredder body comprises: a front blade plate; a rear blade plate arranged opposite the front blade plate; and a plurality of blades supported between the front blade plate and the rear blade plate; wherein the shredder body is a splitable assembly and has a hollow cylindrical structure.

[0047] In some implementations, the blades rotate about a pivoting center G, and cutting edges of the blades during rotating constitute a cylindrical profile of equal diameter.

[0048] In some implementations, the blade has a central division line that has an angle in a range from 30° to 50° relative to a tangential rotating direction of the blade.

[0049] In some implementations, the shredding section further comprises a stationary cutter, the shredder body being fitted with the stationary cutter to perform an action of cutting and crushing the material; one end surface of the stationary cutter has an edge engaging the blade to thereby create a contour edge, distance H between the contour edge and the pivoting center G of the shredder body being less than 10mm.

[0050] In some implementations, a gap allowing for shredded particles to pass through is present between two neighboring blades.

[0051] In some implementations, the shredder body comprises: a rear blade plate arranged opposite the the front blade plate; and a plurality of blades distributed at intervals and supported between the front blade plate and the rear blade plate; wherein the shredder body is a splitable assembly and has a hollow cylindrical structure; wherein a minimum interval between two neighboring blades on a section V-V radially crossing the shredder body is greater than 25mm.

[0052] In some implementations, a number of the blades is less than or equal to 7.

[0053] In some implementations, the shredder body has a non-unitarily formed structure, the shredder body comprising: a front blade plate; a rear blade plate arranged opposite the front blade plate; and a plurality of blades distributed at intervals and detachably supported between the front blade plate and the rear blade plate.

[0054] In some implementations, the shredder body comprises: a front blade plate; a rear blade plate arranged opposite the front blade plate; and a plurality of blades supported between the front blade plate and the rear blade plate; wherein the front blade plate, the rear blade plate, and the blades are metallic members, the blades being formed by stamping, die-casting, or laser cutting.

[0055] In some implementations, thickness W of the shredder body ranges from 3mm to 8mm.BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Fig. 1 is a first schematic diagram of a shredding apparatus in an operating state in some implementations of this disclosure; Fig. 2 is a first sectional view of the shredding apparatus in the operating state in some implementations of this disclosure; Fig. 3 is a first schematic diagram of the shredding apparatus in a retracted state in some implementations of this disclosure; Fig. 4 is an exploded view of the shredding apparatus in some implementations of this disclosure; Fig. 5 is a schematic diagram of a combination of a support assembly and a frame assembly in some implementations of this disclosure; Fig. 6 is an exploded view of the support assembly and the frame assembly in some implementations of this disclosure; Fig. 7 is a second schematic diagram of the shredding apparatus in the operating state in some implementations of this disclosure; Fig. 8 is a second schematic diagram of the shredding apparatus in the retracted state in some implementations of this disclosure; Fig. 9 is a second sectional view of the shredding apparatus in the operating state in some implementations of this disclosure; Fig. 10 is a schematic diagram of the shredding apparatus with its flap lid being open in some implementations of this disclosure; Fig. 11 is an exploded view of a shredding section in some implementations of this disclosure; Fig. 12 is a schematic diagram of the shredding section in some implementations of this disclosure; Fig. 13 is a schematic diagram of a shredder in some implementations of this disclosure; Fig. 14 is a structural schematic diagram of the shredding apparatus in some implementations of this disclosure; Fig. 15 is a first type of sectional view of the shredding apparatus in some implementations of this disclosure; Fig. 16 is a second type of sectional view of the shredding apparatus in some implementations of this disclosure; Fig. 17 is a third type of sectional view of the shredding apparatus in some implementations of this disclosure; Fig. 18 is a structural schematic diagram of a cutting system in this disclosure; Fig. 19 is a structural schematic diagram of a moving cutting member in this disclosure; Fig. 20 is a front view of the moving cutting member in this disclosure; Fig. 21 is a structural schematic diagram of a second transmission assembly in this disclosure; Fig. 22 is a schematic stereoscopic diagram of a work head assembly of the shredding apparatus according to one implementation of this disclosure; Fig. 23 is a schematic side view of a shredder assembly in Fig. 22; Fig. 24 is a schematic split diagram of the shredder assembly in Fig. 22; Fig. 25 is a schematic stereoscopic view of a stationary cutter and a shredder assembly according to one implementation of this disclosure; Fig. 26 is a schematic split diagram of the stationary cutter and the shredder assembly in Fig. 25; Fig. 27 is a schematic sectional view along line V-V of Fig. 25; Fig. 28 is a schematic view of the shredder assembly in Fig. 27 rotating counterclockwise by a certain angle, which gives a comparative structural analysis between 37° and 60° of blade angle C; Fig. 29 is a schematic structure of a cut segment with C = 37° in Fig. 28; Fig. 30 is a schematic structure of a cut segment with C = 60° in Fig. 28; Fig. 31 is a schematic view of the stationary cutter and the shredder assembly in Fig. 27, in which height H of the stationary cutter is set to 5mm and 18mm; Fig. 32 is a schematic structure of the material and the shredder assembly in Fig. 27, where 5 blades are provided with the angle C = 37°; Fig. 33 is a schematic structure of the material and the shredder assembly in Fig. 27, where 8 blades are provided with the angle C = 60°. DETAILED DESCRIPTION OF EMBODIMENTS

[0057] Hereinafter, the present disclosure will be described in further detail through specific implementations with reference to the accompanying drawings.First Implementation

[0058] As illustrated in Figs. 1 to 3, a shredding apparatus according to this implementation comprises a shredder assembly 100, a support assembly 200, and a frame assembly 300. The support assembly 200 is connected to the shredder assembly 100, the frame assembly 300 and the support assembly 200 are securely connected to support the shredder assembly 100, and an open space 201 is left in front of the support assembly 200, the shredder assembly 100 being freely rotatable in the open space 201 about first axis X1 extending through the support assembly 200. Specifically, the shredder assembly 100 comprises a housing 110, an electric motor 120, a power compartment 130, a shredding section 190 having a shredder body 140, a material introducing section 150, and a particle discharging section 160. The electric motor 120, the power compartment 130, and the shredder body 140 are accommodated in the housing 110. The power compartment 130 comprises a battery interface 131 and an accommodation cavity accommodating a battery pack 132, the battery pack 132 being located in the power compartment 130 to power the shredding apparatus.

[0059] The shredder assembly 100 is rotatable about the first axis X1 relative to the support assembly 200. When the shredder assembly 100 is flipped upward about the first axis X1 till a first position, the shredder assembly 100 is disposed in an operating state, a larger portion of the shredder assembly 100 being located above the first axis X1. The material introducing section 150, the shredder body 140, and the particle discharging section 160 being sequentially arranged from top to down. The electric motor 120 actuates the shredder body 140 to rotate about second axis X2, the second axis X2 being substantially horizontally disposed. A to-be-shredded material is charged from the material introducing section 150, cut and comminuted by the spinning shredder body 140, and discharged via the particle discharging section 160. When the shredder assembly 100 is flipped downward about the first axis X1 till a second position, the shredder assembly 100 is disposed in a retracted state, the second axis X2 being substantially vertically disposed, a larger portion of the shredder assembly 100 being located under the first axis X1, the shredder body 140 being located under the first axis X1, whereby height of the shredding apparatus is significantly reduced.

[0060] By leaving an open space 201 in front of the support assembly 200 so that the shredder assembly 100 may rotate in the open space 201, the shredder assembly 100 may achieve a more compact internal layout by reasonably arranging its components as per their sizes and functions, further reducing the overall size of the shredding apparatus in the retracted state.

[0061] In some other implementations, a stationary cutter is further provided in the shredder assembly; the material fed between the shredder body and the stationary cutter is cut and comminuted into shredded particles with relative movement therebetween.

[0062] In some other implementations, a particle removing shaft is further provided in the shredder assembly, the particle removing shaft being located close the underside of the shredder body to remove the shredded particles adhered around the shredder body.

[0063] In some other implementations, the electric motor 120 drives the shredder body 140 to rotate via a speed reduction transmission mechanism. A transmission mechanism with a high transmission ratio is preferably adopted, which requires the electric motor 120 adopt a high-speed motor. More preferably, the transmission mechanism adopts a planetary gearset.

[0064] Preferably in this implementation, Fig. 2 illustrates the operating state, in which the longitudinal cross-sectional contour of the particle discharging section 160 has a shape that is increasingly narrowed from top to down; this facilitates gathering of the falling shredded particles, so that the shredded particles less likely scatter around.

[0065] Preferably in this implementation, vertical distance L4 from a lower end surface 141 of the shredder body to an outlet terminal 163 of the particle discharging section 160 is preferably set in a range from 50mm to 300mm, i.e., 50mm≤L4≤300mm. By controlling the vertical distance from the lower end surface 141 of the shredder body to the outlet terminal 163 of the particle discharging section 160 within a reasonable range, an operator, who stirs the shredded particles in a particle collection bag 400 or clears the shredded particles adhered to the outlet terminal 163 of the particle discharging section 160 while the equipment is operating, does not accidentally extend his hand or a tool into the shredder body 140, which would otherwise incur a safety risk.

[0066] In some other implementations, a bag holder 162 is provided at a bottom portion of the housing, an accommodation space being defined between the housing 110 and the bag holder 162 to accommodate unused particle collection bags 400, so that the operator may fetch a particle collection bag 400 conveniently, which improves the operator's experience.Second Implementation

[0067] Figs. 1 - 6 illustrate an implementation based upon the implementation described supra. In this implementation, the frame assembly 300 comprises a chassis portion 301 and a support portion 302, the support portion 302 being formed by upward extension of the chassis portion 301, the chassis portion 301 being configured to mount a foot pad and / or a wheel 305. The support assembly 200 is securely connected to an upper end of the support portion 302, an open accommodation space 310 being defined under the first axis X1 between the chassis portion 301 and the support portion 302.

[0068] In the operating state, at least a portion of the particle discharging section 160 is disposed in the accommodation space 310. Specifically, a discharge opening is provided at a terminal end of the particle discharging section 160, the discharge opening being arranged in the accommodation space 310.

[0069] In the retracted state, a larger portion of the shredder assembly 100 is disposed in the accommodation space 310. Specifically, the shredder body 140, the material introducing section 150, and the particle discharging portion 160 are disposed in the accommodation space 310, and the electric motor 120 and the power compartment 130 are at least partially disposed in the accommodation space 310.

[0070] Specifically, the frame assembly 300 includes two bent-formed steel tubes and a plurality of connection reinforcing members 303; the two steel tubes being contoured in a symmetrically mirrored manner. The straightened segments of the two steel tubes and the connection reinforcing members 303 are securely connected to form the chassis portion 301 of the frame assembly 300, and the upward snaking segments of the two steel tubes and the connection reinforcing members 303 form the support portion 302 of the frame assembly 300. The support portion 302 further comprises cantilever segments at the ends of the steel tubes, the support assembly 200 being securely connected to the cantilever segments of the steel tubes such that the frame assembly 300 supports the shredder assembly 100. Specifically, the two steel tubes form the open accommodation space 310 under the first axis X1, the straightened segments of the two tubes substantially constituting the length of the accommodation space 310, the two upward snaking segments of the two tubes substantially constituting the height of the accommodation space 310, the interval between the two tubes substantially constituting the width of the accommodation space 310.

[0071] Preferably in this implementation, in the operating state, a particle collection bag 400 is detachably attached in the accommodation space 310; in the retracted state, the particle collection bag 400 migrates out of the accommodation space 310; and a hanger 161 is provided on an outer wall of the particle discharging section 160, the hanger 161 being configured to hang the particle collection bag 400. With the hanger 161 hanging the particle collection bag 400, a conventional large-size collection bin 5-15 is abandoned, which achieves effects of less manufacturing procedures, reduced manufacturing costs, and lower product price, and also realizes energy conservation and emission reduction; meanwhile, the hanger 161 frees the operator from handling and moving the heavy collection bin 5-15 to dump the shredded particles, thereby mitigating the operator's burden of work, making the operator more comfortable in work, and bettering the product's use experience.

[0072] In some other implementations, the frame assembly 300 may also adopt an A-bracket structure.

[0073] In some other implementations, the chassis portion 301 of the frame assembly 300 may also be a unitary piece of a sheet material.

[0074] In some other implementations, the support portion 302 may also be formed by one steel tube, one steel beam, or another structure.

[0075] The chassis portion 301 and the support portion 302 extending upward from the chassis portion 301 contribute a pyramid-like stable structure to the frame assembly 300. This structure may provide an effective support to the running shredder assembly 100 while ensuring its stability and reliability. The open accommodation space 310, which is defined between the chassis portion 301 and the support portion 302 under the first axis X1 to accommodate the shredder assembly 100, facilitates observing the discharging status of the particle discharging section 160 and the collection status of the discharged particles while the shredder is operating.Third Implementation

[0076] Figs. 1-3 illustrate an implementation based upon the second implementation. In this implementation, in the operating state, orthographic projections of the electric motor 120 and the shredder body 140 on the chassis portion 301 fall within the contour of the chassis portion 301 so that the center of gravity of the shredder assembly 100 falls within the contour of the chassis portion 301, which improves body stability and reduces vibration induced by spinning of the electric motor 120 and the shredder body 140 during running of the shredding apparatus so that the body of the operating shredding apparatus less likely shakes. In the retracted state, the orthographic projections of the electric motor 120 and the power compartment 130 on the chassis portion 301 fall within the contour of the chassis portion 301 so that the center of gravity of the shredder assembly 100 falls within the contour of the chassis portion 301, which further improves body stability of the shredding apparatus in the retracted state and lowers the odds of toppling when the operator moves the shredding apparatus in the retracted state.Fourth Implementation

[0077] Figs. 1-3 illustrate an implementation based upon the second implementation. In this implementation, an avoidance notch 304 is formed on the support portion 302; in the retracted state, the particle discharging section 160 at least partially passes through the avoidance notch 304. The particle discharging section 160 requires an enough length to allow for concentration of the discharged particles without scattering around; the avoidance notch 304 formed on the support portion 302 allows for the particle discharging section 160 to at least partially pass through in the retracted state, which avoids collision and interference between the long particle discharging section 160 in the retracted state and the support portion 302, thereby facilitating the retraction operation.Fifth Implementation

[0078] Figs. 1-2 illustrate an implementation based upon the implementations noted supra. In this implementation, the support assembly 200 has one side proximal to the first axis X1 and an opposite side which is opposite the side proximal to the first axis X1 and distal from the first axis X1, the electric motor 120 being disposed at the side proximal to the first axis X1, the power compartment 130 and the electric motor 120 being disposed at a same side, the shredder body 140 being disposed at the side distal from the first axis X1. By arranging the power compartment 130 and the electric motor 120 at one side of the shredder assembly, and arranging the material introducing section 150, the shredder body 140, and the particle discharging section 160 at the opposite side of the shredder assembly 100, the shredder assembly 100 is formed into a square-like structure, giving the shredder assembly 100 a more compact internal layout, whereby the overall size of the shredder assembly 100 can be more miniaturized. Moreover, due to greater weight of the battery pack 132 and the electric motor 120, the center of gravity of the shredder assembly 100 would be too distant from the first axis X1, which requires higher structural strength of the support assembly 200 and thusly increases its weight and cost; to prevent this situation, by arranging the electric motor 120 at the side proximal to the first axis X1, arranging the power compartment 130 and the electric motor 120 at the same side, and arranging the shredder body 140 at the side distant from the first axis X1, this implementation may effectively bias the center of gravity of the shredder assembly 100 towards the first axis X1, which can further alleviate the load imposed upon the support assembly 200, thereby reducing the weight and manufacturing cost of the support assembly 200.Sixth Implementation

[0079] Figs. 1-4 illustrates an implementation based upon the implementations described supra. In this implementation, the support assembly 200 comprises a support base 210, the support base 210 being rotatable about the first axis X1, the shredder assembly 100 and the support base 210 being securely connected so that the shredder assembly 100 can rotate about the first axis X1 relative to the support assembly 200. The support base 210 may be adapted to different models of shredder assemblies 100. By arranging the support base 210 on the support assembly 200, the shredder assemblies of different models may be adapted to the same support assembly 200, which further reduces the cost of designing and developing the product and lowers the price of the product, which also facilitates dismantling, maintenance, and replacement of the shredder assembly 100.Seventh Implementation

[0080] Figs. 1 to 5 illustrate an implementation based upon the sixth implementation described supra. In this implementation, the support assembly 200 comprises a first rotary shaft 202 and a locking member 203, the first rotary shaft 202 being mounted on the support portion 302 along the direction of the first axis X1, the support base 210 being sleeved on the first rotary shaft 202 and rotatable along the first axis X1. By arranging the locking member 203 on the support assembly 200, arranging a fitting member 211 secured on the support base 210, and correspondingly arranging on the fitting member a first locking slot 2111 corresponding to the first position and a second locking slot 2112 corresponding to the second position, when the shredder assembly 100 is disposed in the first position, the locking member 203 may pass through the first locking slot 2111, such that the support base 210 is limited and immobilized by the first rotary shaft 202 and the locking member 203, whereby the shredder assembly 100 is locked in the first position. When the shredder assembly 100 is disposed in the second position, the locking member 203 may pass through the second locking slot 2112, such that the support base 210 is limited and immobilized by the first rotary shaft 202 and the locking member 203, whereby the shredder assembly 100 is locked in the second position. By arranging the first rotary shaft 202 and the locking member 203 for the support assembly 200 and arranging the corresponding fitting member 211 on the support base 210, the shredder assembly 100 achieves a stable position locking and a convenient position shift.

[0081] Preferably in this implementation, the locking member 203 further comprises a reset unit; the operator can turn the shredder assembly 100 by unplugging the locking member 203; after the shredder assembly 100 completes position shift, the locking member 203 may automatically reset to lock the shredder assembly in the shifted position.

[0082] Preferably in this implementation, the support assembly 200 is further provided thereon with an unlock switch 212; when the shredder assembly 100 is locked in the first position, the locking member 203 at least partially passes through the first locking slot 2111 to engage and trigger the unlock switch 212, whereby the shredding apparatus is energized to enter a standby state or an operating state.

[0083] The unlock switch 212 arranged on the support assembly 200 prevents accidental activation of the shredder assembly 100 when the shredder is not disposed in the first position of the operating state, so that no safety accidents would occur.

[0084] Preferably in this implementation, a first damper 213 is further provided on the support assembly 200, the first damper 213 being tightly pressed against the fitting member 211; the first damper 213 provides a damping force while the shredder assembly 100 is rotating, which offsets a fraction of the center of gravity of the downward rotating shredder assembly 100, thereby easing the operator's work in operating the shredding apparatus.

[0085] Preferably in this implementation, a second damper 214 is further provided on the support assembly 200, the second damper 214 being tightly pressed in the support base 210; the second damper 214 provides a damping force while the shredder assembly 100 is rotating, which neutralizes a fraction of the center of gravity of the downward rotating shredder assembly 100, thereby easing the operator's work in operating the shredding apparatus.Eighth Implementation

[0086] As illustrated in Figs. 7 and 8, a shredding apparatus according to this implementation comprises a shredder assembly 100 and a support structure which supports the shredder assembly 100, the shredder assembly 100 comprising a housing 100, an electric motor, a power compartment, a shredder body, a material introducing section 150, and a particle discharging section 160. The support structure comprises a support assembly 200 and a frame assembly 300, the support assembly 200 being connected to the shredder assembly 100, the frame assembly 300 and the support assembly 200 being securely connected to support the shredder assembly 100. The electric motor, the power compartment, and the shredder body are accommodated in the housing 110, the power compartment being configured to accommodate a battery to power the shredding apparatus. The electric motor may drive, directly or via a transmission mechanism, the shredder body to rotate; the material is charged from the material introducing section, shredded by the shredder body, and discharged out of the particle discharging section 160. The shredder assembly 100 may rotate about the first axis X1 so as to be disposed in a first position where the shredder assembly 100 enters an operating state or in a second position where the shredder assembly 100 enters a retracted state. The shredder assembly 100 further comprises a handle 170 arranged on the housing 110, the handle 170 being provided thereon with a grip portion 171 available for being gripped, the handle 170 being rotatable about third axis X3 relative to the housing 110. The grip portion 171 is formed of a cylindrical shape to facilitate the operator to grip.

[0087] In this implementation, the support assembly 200 is provided with a locking part, the locking part being configurable to lock the shredder assembly 100 in the first position or the second position, so that the shredder assembly 100 in the operating state or the retracted state maintains stationary relative to the support assembly 200 and the frame assembly 300.

[0088] The frame assembly 300 comprises a chassis portion 301 and a support portion 302 formed by an upward extended segment of the chassis portion 301, the support portion 302 being securely connected to the support assembly 200. The frame assembly 300 further comprises a foot pad and a wheel 305. When the shredding apparatus in the retracted state is moving, the wheel 305 may rotate to reduce friction with the ground surface, easing the operator's moving work. The foot pad is configured to provide a support force when the shredder stands still.

[0089] The handle 170 may rotate relative to the housing 110. The operator may constantly hold the grip portion 171 when folding and retracting the shredder assembly 100 with the horizontal height of the grip portion 171 maintaining substantially consistent, so that the operator does not feel much fatigue when folding and retracting the shredder assembly 100, further improving the operator's use experience. Moreover, the operator may lift the handle 170 to move the shredding apparatus in the retracted state; compared with a non-rotatable handle 170, the rotatable handle 170 may automatically adjust its orientation as per the operator's body height and posture, which thus may alleviate the operator's fatigue when moving the shredding apparatus.

[0090] Preferably in this implementation, the first axis X1 is parallel to the third axis X3, and the rotating direction of the handle 170 is consistent with the rotating and folding direction of the shredder assembly 100, which eases the operator's work in folding and retracting the shredder assembly 100.

[0091] Preferably in this implementation, the support structure further comprises a damper unit or an energy accumulator to offset a fraction of center of gravity of the shredder assembly during its folding and retracting process, thereby easing the operator's work in folding and retracting the shredder assembly 100.

[0092] To alleviate the operator's sense of fatigue in folding and retracting the shredder assembly 100, the handle 170 needs to be set with a sufficient length so as to provide a larger torque to reduce the force needed to be applied by the operator. Preferably in this implementation, distance L2 between the third axis X3 and the center of the grip portion 171 in the operating state is preferably greater than or equal to 150mm, i.e., L2 ≥ 150mm, more preferably L2 ≥250mm, further preferably L2≥400mm. By setting the handle 170 with a sufficient length, a larger torque is provided, which requires less force imposed by the operator in folding and retracting the shredder assembly 100 and thus mitigates the operator's sense of fatigue.

[0093] As illustrated in Figs. 7 and 8, in an implementation of this disclosure based upon the implementation described supra, in the operating state, the handle 170 is locked tightly on the housing 110; in the retracted state, the handle 170 may rotate relative to the housing 110. By locking the handle 170 tightly on the housing 110 in the operating state, the handle 170 does not rotate so that running of the shredding apparatus would not be affected, while rotatability of the handle 170 relative to the housing 110 in the retracted state facilitates the operator to move the shredding apparatus.

[0094] A latch member 180 is provided on the shredder assembly 100; in the operating state, the latch member 180 may lock the handle 170 tightly on the housing 110. Specifically, after unplugging the latch member 180 and disposing the handle 170 in the locked position, the operator presses down the latch member 180 to snap-fit the latch member 180 with the handle 170, whereby the latch member 180 locks the handle 170 tightly on the housing 110. To fold and retract the shredder assembly 100, the operator unplugs the latch member 180 and then rotates the handle 170 upward, whereby the handle 170 is released from the locked state and may rotate relative to the housing 110.

[0095] A control panel 111 is provided on the shredder assembly 100, the shredding apparatus being controlled via the control panel 111; a first avoidance notch 172 is provided on the handle 170; when the handle 170 is locked tightly on the housing 110, the control panel 111 is exposed in the first avoidance notch 172. By providing the first avoidance notch 172 which may expose the control panel 111 on the handle 170, the operator may operate the shredding apparatus in the operating state.

[0096] A feed port 151 is further provided on the shredder assembly 100, and a second avoidance notch is provided on the handle 170; when the handle 170 is tightly locked on the housing 110, the feed port 151 is exposed in the second avoidance notch 173. By providing the second avoidance notch 173 on the handle 170 which can expose the feed port 151, the operator may charge a to-be-shredded material from the feed port 151 while the shredder assembly 100 is running.

[0097] In some other implementations, an avoidance notch which avoids both of the control panel 111 and the feed port 151 is provided on the shredder assembly 100.

[0098] As illustrated in Figs. 7 and 8, in one implementation of this disclosure based upon the implementation described supra, a stopper is provided on the shredder assembly 100, the stopper being configurable to stop the handle 170 to limit a rotatable angle of the handle 170.

[0099] Specifically, the stopper is a stop surface 112 arranged on the housing 110; when the handle 170 rotates by a certain angle, the stop surface 112 abuts against the handle 170 to thereby limit further rotation of the handle 170.

[0100] In some other implementations, the stopper may also be a protrusion structure provided on the housing 110 or a stop member separately fixed on the housing 110.

[0101] The stopper to limit the rotatable angle of the handle 170 prevents an excessive rotation angle of the handle 170 which would otherwise increase the fatigue of the operator when moving the shredding apparatus.

[0102] Preferably, the rotatable angle of the handle 170 is less than or equal to 180°; more preferably, the rotatable angle of the handle 170 is less than or equal to 165°; further preferably, the rotatable angle of the handle 170 is less than or equal to 150°; and still further preferably, the rotatable angle of the handle 170 is less than or equal to 135°. By limiting the rotatable angle of the handle 170, the handle 170 would not rotate excessively, which further mitigates fatigue of the operator during moving the shredding apparatus.

[0103] Preferably, in the retracted state, when the stopper stops the handle 170, the included angle between the handle 170 and the ground surface is less than or equal to 75°. More preferably, the included angle between the handle 170 and the ground surface is less than or equal to 60°. Further preferably, the included angle between the handle 170 and the ground surface is less than or equal to 45°. By limiting the included angle between the handle 170 and the ground surface in the retracted state, the handle 170 would not rotate excessively, which further mitigates fatigue of the operator during operating; moreover, the appropriate angle between the handle 170 and the ground surface eases the operator's operation when moving the shredding apparatus in the retracted state.

[0104] Preferably, the wheel 305 is configured such that in the retracted state, when the handle 170 is stopped by the stopper, plane P1 constructed by any point on the grip portion 171 and the third axis X3 crosses the position where the wheel 305 is located. The foot pad is disposed under the third axis X3. With this setting, to move the retracted shredding apparatus, the operator may lift the handle 170 to lift up one end of the chassis portion 301 of the frame assembly 300 distant from the wheel 305 with the wheel 305 as the pivot, which reduces the friction of the moving shredding apparatus with the ground surface and thusly eases the operator's moving work. More preferably, the plane constructed by the center of the grip portion 171 and the third axis X3 crosses the center of the axis of the wheel 305.Ninth Implementation

[0105] As illustrated in Figs. 9-13, a shredding apparatus according to one implementation of the disclosure comprises a shredder assembly 100, a support assembly 200, and a frame assembly 300, the shredder assembly 100 comprising a housing 110, an electric motor 120, a shredding section 190, a power compartment 130, a material introducing section 150, and a particle discharging section 160, the electric motor 120 and the shredding section 190 being both provided in the housing 110. A battery socket is provided in the power compartment 130, in which a battery is plugged to power the shredding apparatus. The shredding section 190 comprises a shredder 191 and a shredder casing 192, the shredder 191 being accommodated in the shredder casing 192, the shredder 191 being the shredder body 140 described in the first implementation, the electric motor 120 driving the shredder 191 to rotate. A to-be-shredded material is charged from the material introducing section 150, shredded by the shredder 191, and discharged out of the particle discharging section 160 along a first discharging path 193. A hinged flap lid 114 is provided at one side of the housing 110 proximal to the shredding section 190; the flap lid 114, when being opened till the open position, may expose at least a portion of the shredding section 190, and the flap lid 114, when being securely closed to the closed position, may seal the shredder assembly 100 to prevent the shredded particles from overbrimming out of the periphery of the flap lid 114.

[0106] The shredder 191 has a hollow cylindrical structure; the shredder 191 comprises a blade holder and a plurality of shredder blades 1913 axially arranged, the shredder blades 1913 being secured on the blade holder and distributed circumferentially around the blade holder; the shredder 191 has an opening 1914 extending in the axial direction, the position where the opening 1914 is positioned corresponding to the position of the flap lid 114. The material charged into the shredding apparatus is first shredded by the shredder blades 1913, then the shredded particles fall into a hollow area 1910 of the shredder 191 where they are shredded by the shredder blades 1913 for the second time, and finally the finely shredded particles fall into the particle discharging section 160 where they are discharged out.

[0107] Specifically, the blade holder comprises a first holding portion 1911 and a second holding portion 1912, a plurality of shredder blades 1913 being held between the first holding portion 1911 and the second holding portion 1912, the shredder blades 1913 being axially arranged. The second holding portion 1912 has a circular shape with an opening 1914 in the center, the hollow area 1910 of the shredder 191 being positioned in correspondence to the position of the opening 1914, the opening 1914 being positioned in correspondence to the position of the flap lid 114. When the flap lid 114 is opened, the opening 1914 or the hollow area 1910 being at least partially exposed.

[0108] By setting the shredder 191 with a hollow cylindrical shape and arranging the shredder blades 1913 in the axial direction, the material will be cut twice during the shredding process, which may further enhance shredding efficiency of the shredding apparatus; by positioning the opening 1914 on the shredder 191 to correspond to the position of the flap lid 114, the opening 1914 or the hollow area 1910 may be at least partially exposed when the flap lid 114 is opened, which facilitates the operator to clear the shredded particles adhered on the shredder 191.

[0109] Preferably in this implementation, the shredder blades 1913 are circumferentially distributed and secured to the blade holder. Specifically, the shredder blades 1913 are held between the first holding portion 1911 and a second holding portion 1912 and distributed at even intervals in the circumferential direction. By distributing the shredder blades 1913 circumferentially around the blade holder, the shredder blades 1913 may maintain a substantially consistent rotating speed, which prevents the shredded particles from adhering to the slowly-rotating components of the shredder 191, effectively reducing the frequency of the operator's cleaning the shredder 191.

[0110] Preferably in this implementation, at least some of the shredder blades 1913 extend beyond the outer sides of the first holding portion 1911 and / or the second holding portion 1912; or, at least some of the shredder blades 1913 are close to or parallel to the outer sides of the first holding portion 1911 and / or the second holding portion 1912. By arranging some of the shredder blades 1913 at the outer side of the blade holder, the rotational speed of the shredder blades 1913 can be raised, which makes it less likely for the shredded particles to adhere to the shredder blades 1913.

[0111] The shredder casing 192 has an accommodation cavity to receive the shredder 191; a material inlet opening 1921 and a particle outlet opening 1922 are formed on the shredder casing 192, the material inlet opening 1921 being disposed above the shredder 191, the particle outlet opening 1922 being disposed under the shredder 191. Specifically, the shredder casing 192 comprises a first casing portion 192.1 and a second casing portion 192.2, the first casing portion 192.1 and the second casing portion 192.2 being closed to form an accommodation cavity configured to receive the shredder 191, the material inlet opening 1921 being formed above the accommodation cavity at a position corresponding to the material introducing section 150, the particle outlet opening 1922 being formed under the accommodation cavity at a position corresponding to the particle discharging section 160; the electric motor 120 drives the first casing portion 192.1 to rotate to bring the shredder 191 to rotate; and an avoidance notch 1923 is arranged on the second casing portion 192.2 to expose the hollow area 1910 of the shredder 191.

[0112] By arranging the accommodation cavity for receiving the shredder 191 on the shredder casing 192, the shredder 191 is contributed a secure structural support, which ensures safety and stability of the shredder 191 spinning at a high velocity; by arranging, on the shredder casing 192, the material inlet opening 1921 corresponding to the material introducing section 150 and the particle outlet opening 1922 corresponding to the particle discharging section 160, the shredded particles resulting from the material accessing the shredder 191 via the material introducing section 150 are directly discharged out of the particle discharging section 160, which provides a smooth path for inletting and discharging the material, thereby improving material processing efficiency during the shredding process.

[0113] The shredding apparatus may have a rotatable fold structure, i.e., the shredder assembly 100 may be rotatably folded relative to the support structure, which shrinks the retracted size; the shredding apparatus may also have a non-foldable structure.

[0114] The electric motor 120 may drive the shredder 191 to rotate directly or via a transmission mechanism. A transmission mechanism with a high transmission ratio is preferably adopted, so that the electric motor 120 may select a high-speed motor. Preferably, the transmission is performed by a planetary gearset.

[0115] As illustrated in Figs. 9-13, in an implementation of this disclosure based upon the implementation described supra, when the flap lid 114 is securely closed, a particle discharge gap 113 is formed between the flap lid 114 and the opening 1914; the shredded particles may be discharged via the opening 1914, which, after passing through the particle discharge gap 113, are discharged out of the particle discharging section 160. During the shredding process, if the material is excessively charged, the shredded particles resulting from the first shredding fall into the hollow area 1910 in the shredder 191; since the shredded particles have a low density and a light mass, they are relatively light in weight, so that the secondary shredding has a slower processing speed than the first shredding; consequently, more shredded particles would be accumulated in the hollow area 1910, which would increase the rotating load of the shredder 191, thereby deteriorating the shredding efficiency of the shredding apparatus. The excessive shredded particles would also cause clogging of the shredder 191, lowering the rotational velocity of the shredder 191, even causing stall of the electric motor 120, further incurring a serious consequence. By arranging the particle discharge gap 113 between the flap lid 114 and the opening 1914, a second discharging path 1131 may be formed in the shredder assembly 100, so that the rotating shredder 191 may stir up the shredded particles in the hollow area 1910, and during the stirring process, a fraction of the shredded particles may fall into the particle discharge gap 113 from the opening 1914 and are then discharged out of the particle discharging section 160.

[0116] By arranging the particle discharge gap 113 between the flap lid 114 and the opening 1914, if the to-be-shredded material is excessively charged, the shredded particles failing to be shredded in time in the secondary shredding may be discharged via the particle discharge gap 113, which may lower the risk of deteriorating the shredding efficiency of the shredding apparatus due to the excessive material charged, lower the risks of clogging the shredder 191 and stalling the electric motor 120 caused by the excessive material, and thus enhance the shredding efficiency of the shredding apparatus.

[0117] The material always includes solid organic wastes such as fallen leaves and twigs, which, if not processed in time or due to weather reasons, likely contains high moisture. The shredded particles would engage the flap lid 114 and are likely stuck thereto during the process of being discharged via the second discharging path 1131; if the particle discharge gap 113 is too small, it will get jammed or clogged soon, further affecting the discharging effect of the particle discharge gap 113. Preferably in this implementation, the particle discharge gap 113 L5 is greater than or equal to 10mm; more preferably, L5 ≥ 50mm; further preferably, L5 ≥ 100mm. With a larger particle discharge gap 113, in a case of processing the material with a high moisture content, the odds of jamming or clogging the particle discharge gap 113 due to adherence of shredded particles on the flap lid 114 will be lowered, thereby mitigating the impact of the particle discharge gap 113 on the discharging effect.

[0118] As illustrated in Figs. 9 -12, in an implementation of this disclosure based upon the implementation described supra, a protection switch 1132 is further provided on the shredder assembly 100. When the flap lid 114 is securely closed, the protection switch 1132 is triggered; when the flap lid 114 is open, the protection switch 1132 is not triggered.

[0119] The protection switch 1132 is configured such that in the activated state, the shredding apparatus is energized to enter a standby state or an operating state, and in the inactivated state, the shredding apparatus is deenergized.

[0120] It may be understood that, the protection switch 1132 may be arranged on the housing 110 or may be arranged on the shredding section 190.

[0121] By setting the protection switch 1132 such that only when the flap lid 114 is securely closed, can the shredding apparatus be energized, while when the flap lid 114 is open, the shredding apparatus cannot be deenergized to operate, the shredder 191 cannot rotate when the operator accidentally activates the shredding apparatus during cleaning the shredder assembly, which prevents a safety risk; in addition, the shredded particles would not exit via the flap lid 114 once the shredding apparatus is activated while the flap lid 114 is not securely closed.

[0122] Preferably in this implementation, a fastening member 1133 is further provided on the flap lid 114; when the flap lid 114 is closed, the fastening member 1133 locks the flap lid 114 securely and triggers the protection switch 1132. Specifically, the protection switch 1132 and a pusher 1134 are arranged on the shredder casing 192, and the fastening member 1133 is arranged on the flap lid 114. The fastening member 1133 is exemplarily a knob which securely locks the closed flap lid 114, the knob pushing the pusher 1134 to trigger the protection switch 1132. By locking the flap lid 114 securely and triggering the protection switch 1132 with the fastening member 1133, when the shredding apparatus is operating, the flap lid 114 would not be accidentally opened, thereby preventing a safety risk or preventing the shredded particles from running out via the flap lid 114.

[0123] To prevent the opened flap lid 114 from engaging the shredder 191 causing damages to the shredder 191 or the flap lid 114, it is preferable in this implementation to set vertical distance L3 between the axis X4 about which the flap lid 114 rotates and a lower end surface of the shredder 191 to be greater than or equal to 10mm, i.e., L3 ≥ 10mm. Specifically, a hinge is provided for the flap lid 114, the flap lid 114 being connected to the shredder assembly 100 via the hinge and rotatable about the axis X4 of the hinge, the vertical distance L3 between the hinge and the lower end surface of the shredder 191 is greater than or equal to 10mm. Preferably, L3 ≥50mm; preferably, L3≤100mm. The axis X4 as set facilitates opening or closing the flap lid 114; a larger vertical distance L3 ensures enough gap between the lower end surface of the shredder 191 and the flap lid 114. In this way, the opened flap lid 114 does not engage the shredder 191, which lowers a risk of damaging the shredder 191 or the flap lid 114.

[0124] If the flap lid 114 is closed but not securely locked by the fastening member 1133, vibration would occur upon start of the shredding apparatus, causing the flap lid 114 open, a safety risk is likely induced or the shredded particles are likely discharged from the flap lid 114; to prevent occurrence of this situation, it is preferable in this implementation to set the center of gravity of the flap lid 114 in the closed position to rest outside the axis L3, so that the flap lid 114 in the closed position has a tendency of being opened outwardly; as such, when the fastening member 1133 fails to securely lock the flap lid 114, the flap lid 114 would be opened automatically. In this way, the flap lid 114 will not be closed if not securely locked by the fastening member 1133, and vibration of the machine cannot induce opening of the flap lid 114, which thusly prevents occurrence of a safety risk or discharging of the shredded particles from the flap lid 114.

[0125] In some other implementations, an elastic mechanism configured to automatically open the flap lid 114 is provided on the flap lid 114.

[0126] In an implementation of this disclosure different from the preceding implementation, when the flap lid 114 is in the securely closed state, the protection switch 1132 is not triggered; when the flap lid 114 is in the open state, the protection switch 1132 is triggered; the protection switch 1132 is configured to energize the inactivated shredding apparatus into a standby state or an operating state and to deenergize the activated shredding apparatus. The protection switch 1132 may be arranged on the shredder assembly 100; when the flap lid 114 is opened, it engages and triggers the protection switch 1132; when the flap lid 114 is securely closed, it migrates without triggering the protection switch 1132.

[0127] Due to provision of the protection switch 1132, only when the flap lid 114 is securely closed, can the shredding apparatus be energized, and while when the flap lid 114 is open, the shredding apparatus is deenergized from operating. With this setting, the shredder 191 will not rotate when the operator cleaning the shredder assembly 100 accidentally activates the shredding apparatus, thereby preventing a safety risk. In addition, the shredded particles will not be discharged from the flap lid 114 when the shredding apparatus is activated while the flap lid 114 is not securely closed.Tenth Implementation

[0128] In an implementation illustrated in Figs. 14 - 21 based upon the first implementation, the shredder assembly further comprises a transmission system and a stationary cutting member 4-32 configured to support a to-be-cut material 4-9 and assist in cutting; and a material introducing passage 4-11 and a cutting chamber 4-12 are provided on the housing 110, the material introducing passage 4-11 communicating with the cutting chamber 4-12. In this implementation, the material introducing passage 4-11 is arranged upstream of the cutting chamber 4-12, which facilitates a to-be-cut material 4-9 introduced in the material introducing passage 4-11 to enter the cutting chamber 4-12 under the action of gravity. The shredder body 4-3 is provided in the cutting chamber 4-12, the shredder body 4-3 being configured to cut the to-be-cut material 4-9. The electric motor 4-4 is configured to drive the shredder body 4-3. The transmission system comprises a first transmission assembly 4-51 configured to transmit a torque of the electric motor 4-4 to the shredder body 4-3. In this implementation, the electric motor 4-4 refers to an electromotor, and the to-be-cut material 4-9 is a twig.

[0129] As illustrated in Fig. 18, a moving cutting member 4-31 is connected to the transmission system. The transmission system facilitates transmitting the torque of the electric motor 4-4 to the moving cutting member 4-31. The stationary cutting member 4-32 is adjustably attached on the housing.

[0130] The moving cutting member 4-31 comprises an internal cavity 4-313 and at least one cutting unit 4-311, the cutting unit 4-311 being distributed outside the peripheral of the moving cutting member 4-31, the internal cavity 4-313 being adjacent to the cutting unit 4-311 and disposed proximal to the center of axis of the moving cutting member 4-31; the internal cavity 4-313 has a space receiving cut particles of the to-be-cut material 4-9; at least one interval area 4-312 created between the at least one cutting unit 4-311 is further arranged on the circumference of the moving cutting member 4-31, the cutting unit 4-311 being configured to perform a cutting action of the moving cutting member 4-31 with respect to the to-be-cut material 4-9; each cutting unit 4-311 at least comprises one cutting blade 4-3111, the cutting blade 4-3111 being configured to cut the to-be-cut material 4-9; the cutting unit 4-311 partitions the circumference of the moving cutting member 4-31 to create the interval area 4-312; arrangement of the interval area 4-312 allows for the to-be-cut material 4-9 to pass through the cutting unit 4-311. The bottom of the to-be-cut material 4-9 enters the internal cavity 4-313 through the interval area 4-312, i.e., during the cutting process, a portion of the to-be-cut material 4-9 enters the internal cavity 4-313, while the remaining portion is left outside the moving cutting member 4-31; as the moving cutting member 4-31 rotates, the cutting blade 4-3111 cuts the to-be-cut material 4-9, while the cut particles of the to-be-cut material 4-9 in the internal cavity 4-313 are discharged via the interval area 4-312 with rotation of the moving cutting member 4-31, which prevents the cut particles of the to-be-cut material 4-9 from clogging the moving cutting member 4-31.

[0131] In this implementation, as illustrated in Fig. 19, the moving cutting member 4-31 is provided with three cutting units 4-311, the three cutting units 4-311 being distributed at even intervals around the outer periphery of the moving cutting member 4-31, neighboring cutting units 4-311 defining the interval area 4-312 via which the to-be-cut material 4-9 passes through the cutting units 4-311.

[0132] As illustrated in Fig. 20, to ensure a smooth cutting torque provided by the moving cutting member 4-31, an included angle a formed by a connecting line between two end points of the cutting blade 4-3111 and the axis of the moving cutting member 4-31 is not greater than 45°. In Fig. 20, point E is one end point of the moving cutting member 4-31, point F is the opposite end point of the cutting blade 4-3111, I is the axis of the moving cutting member 4-31, and the angle a formed by the connecting line between point E and point F and the axis I is not greater than 45°. This angle allows for the cutting blade 4-3111 to progressively penetrate into the to-be-cut material 4-9, which offers a smoother force variation during the cutting process; moreover, this can also buffer dramatic change of the motor load and mitigate the electric impact in the electrical circuit, thereby offering a protection to the power source; meanwhile, the stress imposed on the moving cutting member 4-31 is also mitigated, extending the service life of the shredder body 4-3.

[0133] As illustrated in Fig. 18, to achieve intimate fitting between the moving cutting member 4-31 and the stationary cutting member 4-32, each cutting unit 4-311 at least comprises one front cutting-edge line 4-3112, and the stationary cutting member 4-32 is arranged thereon with a stationary cutting-edge line 4-321 mated with the front cutting-edge line 4-3112, the stationary cutting-edge line 4-321 and the front cutting-edge line 4-3112 being both formed of a linear arc-shaped profile. This setting facilitates intimate fitting between the moving cutting member 4-31 and the stationary cutting member 4-32. A stationary support edge 4-322 is further arranged on the stationary cutting member 4-32. A stationary cutting point D is formed at an intersection between the stationary support edge 4-322 and the stationary cutting-edge line 4-321, i.e., an end point of the stationary cutting-edge line 4-321 proximal to the moving cutting member 4-31 is defined as the stationary cutting point D; in one implementation of this disclosure, the stationary cutting point D is sufficiently intimately fitted with the front cutting-edge line 4-3112 of the moving cutting member 4-31 so that the to-be-cut material 4-9 is more easily cut off, and even a surface with resilient fibers can also be effectively cut off.

[0134] As the moving cutting member 4-31 and the stationary cutting member 4-32 will be worn over time, the gap therebetween will also be enlarged; to ensure intimate fitting between the moving cutting member 4-31 and the stationary cutting member 4-32, an adjusting member 4-6 configured to push the stationary cutting member 4-32 is provided on the housing 110, the adjusting member 4-6 serving to adjust a position of the stationary cutting member 4-32 so that the moving cutting member 4-31 and the stationary cutting member 4-32 always maintain an intimately fitted state; the adjusting member 4-6 may be manually operated or may be automatically pre-tightened.

[0135] In this implementation, the bottom of the stationary cutting member 4-32 is rotatably attached on the housing 110, and an end portion of the adjusting member 4-6 is secured to the stationary cutting member 4-32. The adjusting member 4-6 is telescopically arranged in the housing 110 to realize position adjustment of the stationary cutting member 4-32. By arranging the adjusting member 4-6 telescopically in the housing 110 and securing one end of the adjusting member 4-6 to the stationary cutting member 4-32, it facilitates the adjusting member 4-6 to telescopically push the stationary cutting member 4-32 to rotate, which realizes position change of the stationary cutting member 4-32, ensuring that the stationary cutting member 4-32 is always closely fitted with the moving cutting member 4-31.

[0136] Furthermore, in this implementation, as illustrated in Figs. 16 and 17, the bottom of the stationary cutting member 4-32 is hinged on the housing 110, and an adjustment hole is provided on the housing 110. The adjusting member 4-6 passes through the adjustment hole and is then secured to the stationary cutting member 4-32. The adjusting member 4-6 is thread-connected to the adjustment hole. By rotating the adjusting member 4-6, the position of the stationary cutting member 4-32 can be adjusted, which facilitates pushing the stationary cutting member 4-32 to intimately fit the moving cutting member 4-31, thereby facilitating distance control between the stationary cutting member 4-32 and the moving cutting member 4-31 so as to maintain an appropriate fit degree; this ensures effective cutoff of the to-be-cut material, particularly a material with a resilient surface. In addition, the adjusting member 4-6 may be a rigid body, or an elastic body, or a combination thereof.

[0137] Alternatively, in another implementation of this disclosure, the adjusting member 4-6 is automatically pre-tightened; the adjusting member 4-6 passes through the housing 110 and is then connected to the stationary cutting member 4-32; an electric pusher is arranged on the adjusting member 4-6 to push the adjusting member 4-6 to telescope to thereby adjust the position of the stationary cutting member 4-32, whereby the stationary cutting member 4-32 is intimately fitted with the moving cutting member 4-31.

[0138] In addition, as illustrated in Fig. 15, a baffle plate 4-8 is further provided outside the moving cutting member 4-31; the baffle plate 4-8 can block circumferential rotation of the material; blocked by the baffle plate 4-8, the cut particles of the material are radially discharged out of the interval area of the moving cutting member 4-31, which prevents the finely cut particles from being accumulated in the interval area 4-312 of the moving cutting member 4-31 so as not to affect the cutting efficiency.

[0139] In one implementation of this disclosure, the shredding apparatus further comprises a feed system, the feed system being disposed in the cutting chamber 4-12 and configured to feed the to-be-cut material 4-8 into the shredder body 4-3. The feed system comprises a feeding member 4-2 that is movably provided on the housing 110. A distance between the feeding member 4-2 and the stationary cutting member 4-32 is controlled to allow for different sizes of to-be-cut materials 4-9 to pass through. In this implementation, the feeding member 4-2 is specifically slidingly arranged on the housing 110 with an arc-shaped sliding trajectory. The to-be-cut material 4-9 enters the shredder body 4-3 via a passage defined between the feeding member 4-2 and the stationary support edge 4-322.

[0140] In this implementation, a ratchet 4-21 is provided at an outer side of the feeding member 4-2; provision of the ratchet 4-21 increases the friction between the feeding member 4-2 and the to-be-cut material 4-9, thereby facilitating the feeding member 4-2 to feed the to-be-cut material 4-9 into the shredder body 4-3 where it is cut. The feed system is rotated by a transmission system; with co-action of the ratchet 4-21, the feeding member 4-2 forcibly conveys the to-be-cut material 4-9 into the shredder body 4-3 where it is cut.

[0141] As illustrated in Figs. 16 and 17, the to-be-cut material 4-9 in Fig. 16 and the to-be-cut material 4-9 in Fig. 17 are of different sizes; during the material feeding process, the feed system may adjust the distance between the feeding member 4-2 and the stationary cutting member 4-32 as per the sizes of different to-be-cut materials 4-9, so that the materials of different sizes can pass through the passage between the feeding member 4-2 and the stationary cutting member 4-32 into the cutting region.

[0142] In one implementation of this disclosure, the shredding apparatus further comprises a mount 4-7; the feeding member 4-2 and the moving cutting member 4-31 are both fixed on the mount 4-7; the mount 4-7 performs a rotational movement about an axis of the moving cutting member 4-31 so that the feed system slides on the housing 110; the mount 4-7 is configured to support the feeding member 4-2 and the moving cutting member 4-31 to prevent the rotating feeding member 4-2 from interfering with the cutting operation of the moving cutting member 4-31; the mount 4-7 rotates to drive the feeding member 4-2 to slide on the housing 110.

[0143] Furthermore, an elastic reset member is further provided between the mount 4-7 and the housing 110. The elastic reset member contributes the mount 4-7 a constant tendency of moving towards the stationary cutting member 4-32; after the to-be-cut material 4-9 enters the cutting chamber 4-12 via the material introducing passage 4-11, the to-be-cut material 4-9 forces the feeding member 4-2 to move away from the stationary cutting member 4-32, while the elastic reset member imposes a force against the feeding member 4-2 to drive the latter to move close to the stationary cutting member 4-32, whereby the to-be-cut material 4-9 is tightly clamped between the feeding member 4-2 and the stationary cutting member; as such, the to-be-cut materials 4-9 of different sizes can be effectively clamped and fed, and during this process, sliding and resetting of the feeding member 4-2 do not require power supplied by the electric motor 4-4, which reduces energy consumption.

[0144] Furthermore, in another implementation of this disclosure, as illustrated in Figs. 14 and 15, an arc-shaped chute 4-13 is further arranged on the housing 110, the mount 4-7 being slidingly disposed in the arc-shaped chute 4-13. In this implementation, one end of the mount 4-7 where the moving cutting member 4-31 is set is coaxially connected to the moving cutting member 4-31, and another end of the mount 4-7 where the feeding member 4-2 is provided is slidingly disposed in the arc-shaped chute 4-13. The arc-shaped chute 4-13 is set with an arc-shaped structure where the central axis of the moving cutting member 4-31 is the center of the arc, so that the mount 4-7 may rotate about the central axis of the moving cutting member 4-31, which prevents the sliding feeding member 4-2 from interfering with the cutting action of the shredder body 4-3. In addition, provision of the arc-shaped chute 4-13 further facilitates limiting the rotational angle of the mount 4-7, thereby improving reliability of the feed system and extending the service life of the elastic reset member.

[0145] The transmission system comprises a first transmission assembly 4-51, the first transmission assembly 4-51 being configured to transmit a torque of the electric motor 4-4 to the moving cutting member 4-31.

[0146] In one implementation of this disclosure, the first transmission assembly 4-51 comprises an epicyclic gear train and a final output shaft 4-54, the final output shaft 4-54 being connected to the moving cutting member 4-31 to transmit a torque of the electric motor 4-4 to the shredder body 4-3. Transmission via the epicyclic gear train ensures the transmission efficiency, and a plurality of stages of epicyclic gear trains may be arranged to perform reduction transmission as per the rotational speed and torque requirements of the transmission system; and the first transmission assembly 4-51 transmits the required rotational speed and torque to the shredder body 4-3 via the final output shaft 4-54.

[0147] Furthermore, a transmission gear 4-53 is arranged between the electric motor 4-4 and the first transmission assembly 4-51. The electric motor 4-4 transmits power to the first transmission assembly 4-51 via the transmission gear 4-53. To increase a transmission ratio of the transmission system, a plurality of stages of epicyclic gear trains may be arranged for the transmission system. In this implementation, the epicyclic gear train comprises a first planetary gear assembly, a second planetary gear assembly, and a ring gear 4-513. A sun gear is arranged between respective stages of epicyclic gear trains. The transmission gear 4-53 is connected to one end of the output shaft of the electric motor, the electric motor transmitting power to the transmission system via the transmission gear 4-53 at one end of the output shaft. The first planetary gear assembly comprises a first planetary gear 4-511 and a first planetary carrier 4-512. The transmission gear 4-53 drives the first planetary gear 4-511 to rotate about the ring gear 4-513, the first planetary gear 4-511 rotates to drive the first planetary carrier 4-512 to rotate, and the sun gear on the first planetary carrier 4-512 drives the second epicyclic gear train to rotate. Finally, the torque being transmitted to the moving cutting member 4-31 via the final output shaft 4-54.

[0148] In addition, for the sake of system transmission efficiency, this implementation sets the first transmission assembly 4-51 for epicyclic gear train transmission; in another implementation of this disclosure, a reduction transmission solution such as parallel gears or worm gears may be selected for an efficiency-insensitive system.

[0149] The transmission system further comprises a second transmission assembly 4-52, the second transmission assembly being arranged between the moving cutting member 4-31 and a feeding member 4-2 to facilitate transmitting power of the moving cutting member 4-31 to the feeding member 4-2. The second transmission assembly 4-52 is configured to transmit power of the moving cutting member 4-31 to the feeding member 4-2. In one implementation of this disclosure, the second transmission assembly 4-52 is configured as belt transmission, i.e., the second transmission assembly 4-52 comprises a first pulley 4-521 connected to the moving cutting member 4-31, a second pulley 4-522 connected to the feeding member 4-2, and a belt 4-523 configured for power transmission, the first pulley 4-521 being co-axially arranged with the moving cutting member 4-31, the second pulley 4-522 being co-axially arranged with the feeding member 4-2. The second transmission assembly 4-52 implements power transmission between the moving cutting member and the feeding member 4-2 via the first pulley 4-521, the second pulley 4-522, and the belt 4-523, i.e., the first pulley 4-521 and the moving cutting member 4-31 co-act to transmit power to the belt 4-523, the belt 4-523 transmits the power to the second pulley 4-522, and then the second pulley 4-522 transmits the power to the feeding member 4-2. In addition, the first pulley 4-521 and the second pulley 4-522 are both mounted on the mount 4-7.

[0150] In addition, as illustrated in Fig. 21, in another implementation of this disclosure, there is provided a manner of variable speed adjustment in belt-pulley transmission, i.e., the variable speed adjustment is implemented by the second transmission assembly 4-52. The second transmission assembly 4-52 comprises at least two pulley groups, i.e., the pulleys in the second transmission assembly 4-52 may include two or more groups of pulleys 4-523 of equal length; the second transmission assembly 4-52 comprises a first pulley group 4-524, a second pulley group 4-525, and a belt 4-526; the user can realize variable-speed movement of the pulleys by actuating the belt 4-526 to move from the first pulley group 4-524 to the second pulley group 4-525, thereby realizing adjustment of the rotational speed of the feeding member 4-2 and realizing cut length adjustment of the to-be-cut material 4-9. Dependent on different use scenarios, the user may autonomously adjust the sizes of cut particles so as to be adapted to different purposes.

[0151] Alternatively, in another implementation of this disclosure, a different size of cut particles is obtained by changing the feeding member 4-2. Specifically, feeding members 4-2 using gears of different diameters can result in different sizes of cut particles so as to be adapted to different purposes.

[0152] The belt transmission of the second transmission assembly 4-52 is only one manner of ensuring the mounting distance and stroke; in another implementation of this disclosure, other transmission manners such as gearing transmission may also be adopted.Eleventh Implementation

[0153] As illustrated in Figs. 21-24, on the basis of the first implementation, the shredding section further comprises a stationary cutter 5-23. The shredder body 140 is a non-unitarily formed integrated part, mainly comprising a front blade plate 5-31, a rear blade plate 5-33, and an elongated blade 5-32 detachably mounted between the front blade plate 5-31 and the rear blade plate 5-33, the front blade plate 5-31, the rear blade plate 5-33, and the blade 5-32 being formed into a substantially cylindrical configuration. The blade 5-32 is supported and mounted between the front blade plate 5-31 and the rear blade plate 5-33, i.e., an inwardly recessed slot is arranged on two opposite end surfaces of the front blade plate 5-31 and the rear blade plate 5-33, respectively, to accommodate and securely position the two opposite end surfaces of the blade 5-32; in this way, the blade 5-32 is detachably assembled, e.g., by plug-fitting, between the front blade plate 5-31 and the rear blade plate 5-33; this assembly manner facilitates replacement of the blade 5-32. The blade 5-32 may be separately hardened, which simplifies manufacturing and assembly and thus enhances efficiency; meanwhile, the replaceability of the blade 5-32 facilitates production and after-sales service; a user always needs to cut tough objects during use, causing damages to the blade 5-32; replaceability of the blade 5-32 may lower the user's replacement costs.

[0154] As illustrated in Figs. 25-26, a side surface of the stationary cutter 5-23 facing the shredder body 140 is formed by curved plane P1 and curved plane P2; generally, the curved plane P1 has an outwardly convex profile and the curved plane P2 has a correspondingly inwardly concave profile; in addition, a contour edge 5-232 is formed at the intersection between the curved plane P1 and the curved plane P2; the blade 5-32 creates a shearing-like movement on the contour edge 5-232 to cut the vegetation introduced in an operation chamber.

[0155] As illustrated in Fig. 27, the blades 5-32 are of a substantially elongated shape, distributed evenly in an array on the V-V section. Specifically, the blades 5-32 are distributed evenly about the pivoting center G of the shredder body 140; the blade 5-32 has a blade head and a blade tail which are oppositely arranged in the width direction, the blade head is formed with surfaces 5-32a and 5-32b on the section V-V, whereby a cutting edge 5-321 is formed at the blade head position; and a blade handle is formed at the blade tail position.

[0156] Here, given that L1 denotes the central division line between the surfaces 5-32a and 5-32b of the blade 5-32, which is the straight line between the central point of the head and the central point of the tail, and L2 denotes the tangent direction when the tip of the cutting edge 5-321 rotates through the pivoting center G of the shredder body 140, the included angle C between L1 and L2 is set in a range from 30° to 50°.

[0157] As illustrated in Figs. 23, 24, and 27, the blade 5-32 rotates about the pivoting center G, and the cutting edge 5-321 constitutes a circular cylinder structure of equal diameter during rotating.

[0158] Here, the material 5-40 is a cylindrical bar with a diameter of 40mm.

[0159] Here, the rotational speed of the shredder body 140 is preferably about 48rpm.

[0160] As illustrated in Fig. 28, the angle C dictates a difficulty of penetrating the blade 5-32 into the vegetation material 5-40.

[0161] Specifically, the left side of Fig. 28 illustrates a schematic structure when C=37°, and the right side of Fig. 28 illustrates a schematic structure when C=60°.

[0162] In the case of C=37°, when the blade 5-32 rotates through 30° about the pivoting center G, the material 5-40 has a smaller squeezed area 401, so that less squeezing force is needed to overcome for the shredder body 140 to rotate.

[0163] In the case of C=60°, when the blade 5-32 rotates through 30° about the pivoting center G of the shredder body 140, the material 5-40 has a larger squeezed area 401, so that rotation of the shredder body 140 needs to overcome a larger squeezing force; under the larger squeezing force, the material 5-40 is pushed against the curved plane P1 of the stationary cutter 5-23, which creates a relatively large friction, causing the material 5-40 hard to be fed downward, so that the shredder body 140 needs to supply a larger torque and a higher output power.

[0164] As illustrated in Fig. 29, in the case of C=37°, the cut notch 5-402 of the material 5-40 is relatively neat, without a noticeable squeezed area; moreover, the cut section of the material 5-40 in the figure has more loose cracks 5-403, which facilitates decomposition of the cut particles of the material 5-40; it has been revealed that some cracks of excessively squeezed material 5-40 would be densely compressed, which is difficult to process and decompose.

[0165] As illustrated in Fig. 30, in the case of C=60°, the material 5-40 has a noticeable squeezed area 5-401, and the cut particles of the material 5-40 are seriously deformed.

[0166] Therefore, to cut off the material 5-40 more easily, this disclosure finds that the angle C within the range from 30° to 50° is the most preferable, preferably about 37°.

[0167] As illustrated in Fig. 31, given vertical distance H between the contour edge 5-232 of the stationary cutter 5-23 and the pivoting center G of the shredder body 140, and given length D of the cut piece of the material 5-40, it is seen that the greater the H is, the smaller the D is.

[0168] Given that the blade 5-32 starts rotating counterclockwise when engaging the material 5-40 till angle B with respect to the contour edge 5-232 of the stationary blade 5-23, the angle B representing the operating angle of the blade 5-32 in cutting the material 5-40; given that the angle formed by respective lines between the tips of the cutting edges 5-321 of neighboring two blades 5-32 of the shredder body 140 and the pivoting center G of the shredder body 140 is A, here, the shredder body 140 has 5 blades 5-32, then angle A = 72°.

[0169] When H = 5mm, D is about 18mm, and angle B is 78°; in this case, the material 5-40 is fed with a large magnitude for single cutting, and angle B is greater than angle A, which ensures continuity in cutting the material 5-40; before the preceding blade 5-32 completely cuts off the material 5-40, the next blade 5-32 already enters the cutting state.

[0170] When H = 18mm, D is about 12mm, and angle B is 62°; in this case, the material 5-40 is fed with a small magnitude for single cutting, and angle B is less than angle A, which cannot ensure continuity in cutting the material 5-40; before the preceding blade 5-32 completely cuts off the material 5-40, the next blade 5-32 is still in the idle state; however, the cutting force in this case is relatively small.

[0171] Therefore, it is seen that, taking both of the continuity and feed magnitude of cutting the material 5-40 into account, the angle B shall be greater than angle A; now, the cutting effect is particularly good when H is in the range from 2mm to 10mm, preferably about 5mm.

[0172] As illustrated in Fig. 32, an elongated hole-like clearance is present between two neighboring blades 5-32, the elongated hole being provided on the section V-V. The minimum pass distance on the radial section is defined as S, i.e., the spacing between the lines from respective heads and tails of two neighboring blades 5-32 is S.

[0173] Here, given that the shredder body 140 has 5 blades 5-32; given that the angle C is 37°; given that the thickness w of the blade 5-32 is 5mm; given that S is about 30mm; to ease understanding, given that the stationary cutter 5-23 has three blades: blade 5-32a, blade 5-32b, and blade 5-32c; now the material 5-40 is cut into two segments, segment 5-404a and segment 5-404b, the segment 5-404a being located in the elongated hole-like clearance between blade 5-32b and blade 5-32c, the segment 5-404b being located in the elongated hole between the blade 5-32c and blade 5-32d; the blade 5-32a is disposed at the material 5-40 side; as illustrated in the figure; the cut segment 5-404a and the cut segment 5-404b have a tendency of migrating from the shredder body 140 from direction F1 and direction F2 with a larger margin of space, respectively.

[0174] As illustrated in Fig. 33, in comparison with Fig. 32, given that the shredder body 140 has 8 blades 5-32; given that the angle C is 60°; given that the thickness of the blade 5-32 is 5mm; given that S is about 15mm; as illustrated in Fig. 33, the material 5-40 is cut into three segments, cut segment 5-404c, cut segment 5-404d, and cut segment 5-404e, respectively, the cut segment 5-404c being located in the elongated hole between the blade 5-32a and the blade 5-32b, the cut segment 5-404d being located in the elongated hole between the blade 5-32b and the blade 5-32c, the cut segment 5-404e being located in the elongated hole between the blade 5-32c and blade 5-32d; as illustrated in the figure, it is hard for the cut segment 5-404c, the cut segment 5-404d, and the cut segment 5-404e to migrate from the elongated holes between the blades 5-32; in addition, during rotating of the shredder body 140, the cut segment 404c, the cut segment 5-404d, and the cut segment 5-404e squeeze each other, easily causing clogging of the segments.

[0175] Therefore, it is seen from Fig. 32 and Fig. 33 that it is most appropriate to set 5 blades 5-32, and it is appropriate to set the minimum pass distance to be greater than 25mm, preferably 30mm.

[0176] In view of the above, considering cutting efficiency of the shredder body 140 and discharging of the material 5-40, this disclosure finds that an optimum cutting, shredding, and discharging effect is achieved when 5 blades 5-32 are provided, the minimum pass distance S between the blades 5-32 is greater than 25mm, and the angle C is in the range from 30° to 50°.

[0177] In view of the above, this disclosure can improve cutting effect, facilitate shred discharge, and reduce high load operating time through the specific cutter manufacturing process and co-act between specific specifications of cutter structure and angle.

Examples

Embodiment Construction

[0057]Hereinafter, the present disclosure will be described in further detail through specific implementations with reference to the accompanying drawings.

First Implementation

[0058]As illustrated in Figs. 1 to 3, a shredding apparatus according to this implementation comprises a shredder assembly 100, a support assembly 200, and a frame assembly 300. The support assembly 200 is connected to the shredder assembly 100, the frame assembly 300 and the support assembly 200 are securely connected to support the shredder assembly 100, and an open space 201 is left in front of the support assembly 200, the shredder assembly 100 being freely rotatable in the open space 201 about first axis X1 extending through the support assembly 200. Specifically, the shredder assembly 100 comprises a housing 110, an electric motor 120, a power compartment 130, a shredding section 190 having a shredder body 140, a material introducing section 150, and a particle discharging section 160. The electric motor ...

Claims

1. A shredding apparatus, comprising: a shredder assembly comprising an electric motor, a power compartment, a material introducing section, a shredding section having a shredder body, and a particle discharging section; a support assembly connected to the shredder assembly; and a frame assembly connected to the support assembly to thereby support the shredder assembly; wherein an open space is left in front of the support assembly, the shredder assembly being rotatable in the open space about first axis X1 extending through the support assembly, allowing for the shredder assembly to be switchable between a first position where the shredder assembly enters an operating state and a second position where the shredder assembly enters a retracted state; and in the operating state, the shredder body rotates with the electric motor, wherein a material is introduced via the material introducing section, shredded by the shredder body, and discharged out of the particle discharging section.

2. The shredding apparatus according to claim 1, wherein the frame assembly comprises a chassis portion and a support portion extending upward from the chassis portion, the support assembly being securely connected to an extreme end of the support portion, an open accommodation space being defined between the chassis portion and the support portion under the first axis X1; in the operating state, at least a portion of the particle discharging section resides and is exposed in the accommodation space; and in the retracted state, the shredder body is received in the accommodation space.

3. The shredding apparatus according to claim 2, wherein in the operating state, orthographic projections of the electric motor and the shredder body on the chassis portion fall within a contour of the chassis portion; and in the retracted state, the orthographic projections of the electric motor and the power compartment on the chassis portion fall within the contour of the chassis portion.

4. The shredding apparatus according to claim 2, wherein an avoidance notch is formed on the support portion, and in the retracted state, at least a portion of the particle discharging section passes through the avoidance notch.

5. The shredding apparatus according to claim 2, wherein in the operating state, a particle collection bag is removably attached in the accommodation space; in the retracted state, the particle collection bag migrates out of the accommodation space; and a hanger is provided on the particle discharging section, the hanger being configured to hang the particle collection bag.

6. The shredding apparatus according to claim 1, wherein in the operating state, the electric motor is disposed at one side proximal to the first axis X1, the power compartment and the electric motor are disposed at a same side, and the shredder body is disposed at a side distal from the first axis X1.

7. The shredding apparatus according to claim 1, wherein the support assembly comprises a support base to which the shredder assembly is securely connected, the support base being rotatable about the first axis X1.

8. The shredding apparatus according to claim 1, wherein a locking member is provided on the support assembly, the locking member being configured to lock the shredder assembly when the shredder assembly is disposed in the first position or in the second position.

9. The shredding apparatus according to claim 8, wherein an unlock switch is further provided on the support assembly; and when the shredder assembly is locked in the first position, the locking member switches on the unlock switch.

10. The shredding apparatus according to claim 1, wherein vertical distance L4 from an outlet terminal of the particle discharging section to a lower end surface of the shredder body ranges from 50mm to 300mm.

11. The shredding apparatus according to claim 1, wherein the shredder assembly further comprises a housing and a handle, the handle being provided thereon with a grip portion available for being gripped, the handle being rotatable about third axis X3 relative to the housing.

12. The shredding apparatus according to claim 11, wherein the first axis X1 and the third axis X3 are parallel.

13. The shredding apparatus according to claim 11, wherein in the operating state, the handle is locked tightly on the housing; and in the retracted state, the handle is rotatable relative to the housing.

14. The shredding apparatus according to claim 13, wherein a control panel is provided on the shredder assembly, and an avoidance notch configurable to expose the control panel is provided on the handle; and when the handle is locked tightly on the housing, the control panel is exposed in the avoidance notch.

15. The shredding apparatus according to claim 13, wherein an inlet port is arranged on the material introducing section, and an avoidance notch configurable to expose the inlet port is provided on the handle; and when the handle is locked tightly on the housing, the inlet port is exposed in the avoidance notch.

16. The shredding apparatus according to claim 13, wherein a latch member is provided on the shredder assembly, and in the operating state, the latch member is configurable to lock the handle tightly on the housing.

17. The shredding apparatus according to claim 11, wherein a stopper is provided on the shredder assembly, the stopper being configurable to stop the handle to limit a rotatable angle of the handle.

18. The shredding apparatus according to claim 17, wherein the support assembly comprises a wheel; and in the retracted state, the stopper stops the handle so that plane P1 created by any point on the grip portion and the third axis X3 crosses the wheel.

19. The shredding apparatus according to claim 17, wherein in the retracted state, when the handle is stopped by the stopper, an included angle between the handle and a ground surface is less than or equal to 75°.

20. The shredding apparatus according to claim 11, wherein in the operating state, distance L2 between the third axis X3 and a center of the grip portion is greater than or equal to 150mm.

21. The shredding apparatus according to claim 1, wherein the shredder assembly further comprises a housing and a shredding section driven by the electric motor, the electric motor and the shredding section being both accommodated in the housing, a hinged flap lid being provided at a side of the housing proximal to the shredding section, the flap lid being openable to expose at least a portion of the shredding section.

22. The shredding apparatus according to claim 21, wherein the shredder body is of a hollow cylindrical shape, the shredder body comprising a blade holder and a plurality of shredder blades which are distributed axially and held on the blade holder, the shredder body being provided with an opening extending in an axial direction, the opening being positioned in correspondence to the flap lid.

23. The shredding apparatus according to claim 22, wherein the shredding section further comprises a shredder casing, the shredder casing having an accommodation cavity that is configured to receive the shredder body, the shredder casing comprising a material inlet opening corresponding to the material introducing section and a particle outlet opening corresponding to the particle discharging section.

24. The shredding apparatus according to claim 22, wherein the plurality of shredder blades are distributed circumferentially around the blade holder.

25. The shredding apparatus according to claim 22, wherein when the flap lid is securely closed, a particle discharge gap is formed between the flap lid and the opening; shredded particles are discharged via the opening, through the particle discharge gap, and out of the particle discharging section.

26. The shredding apparatus according to claim 25, wherein width L5 of the particle discharge gap is greater than or equal to 10mm.

27. The shredding apparatus according to claim 21, wherein a protection switch is further provided on the shredder assembly; when the flap lid is securely closed, the protection switch is activated; when the flap lid is open, the protection switch is inactivated; and the protection switch is configured such that under activation of the protection switch, the shredding apparatus is energized to enter a standby state or the operating state, and under inactivation of the protection switch, the shredding apparatus is deenergized.

28. The shredding apparatus according to claim 27, wherein a fastening member is further provided on the flap lid; when the flap lid is securely closed, the fastening member is operable to lock the flap lid securely while activating the protection switch.

29. The shredding apparatus according to claim 22, wherein the flap lid is pivotal about axis X4, vertical distance L3 between the axis X4 and a lower end surface of the shredder body is greater than or equal to 10mm.

30. The shredding apparatus according to claim 21, wherein a protection switch is further provided on the shredder assembly, when the flap lid is securely closed, the protection switch is inactivated; when the flap lid is open, the protection switch is activated; and the protection switch is configured such that under inactivation of the protection switch, the shredding apparatus is energized to enter a standby state or the operating state, and under activation of the protection switch, the shredding apparatus is deenergized.

31. The shredding apparatus according to claim 1, wherein the shredding section comprises a cutting chamber communicating between the material introducing section and the particle discharging section; the shredder assembly further comprises a stationary cutting member and a transmission system, the shredder body being a moving cutting member; and the stationary cutting member is adjustably mounted on the housing; the moving cutting member comprises an internal cavity and at least one cutting unit, the at least one cutting unit being distributed at a peripheral outer side of the moving cutting member, the cutting unit being provided with at least one cutting edge configured to cut a to-be-cut material, the internal cavity being disposed adjacent to the cutting unit and proximal to a center of axis of the moving cutting member, the internal cavity having a space receiving cut particles of the to-be-cut material; an interval area created between the at least one cutting unit is further arranged on the moving cutting member, a bottom portion of the to-be-cut material being admitted into the internal cavity via the interval area; and the transmission system comprises a first transmission assembly configured to transmit a torque of the electric motor to the moving cutting member.

32. The shredding apparatus according to claim 31, wherein an included angle a formed by a connection line between two ends of the cutting edge and the axis of the moving cutting member is less than or equal to 45°.

33. The shredding apparatus according to claim 31, wherein the cutting unit comprises a front cutting-edge line, and the stationary cutting member is arranged thereon with a stationary cutting-edge line fitted with the front cutting-edge line, the front cutting-edge line being formed of a linear arc-shaped profile, the stationary cutting-edge line being formed of a linear arc-shaped profile corresponding to the front cutting-edge line, wherein stationary cutting point D defined by an end point of the stationary cutting-edge line proximal to the moving cutting member is intimately attached to the front cutting-edge line.

34. The shredding apparatus according to claim 31, further comprising an adjusting member configured to adjust a position of the stationary cutting member, a bottom portion of the stationary cutting member being rotatably connected on the housing, an end portion of the adjusting member being secured to the stationary cutting member, the adjusting member being telescopically provided on the housing to perform positional adjustment of the stationary cutting member, the adjusting member being a rigid member or an elastic member.

35. The shredding apparatus according to claim 31, wherein the moving cutting member further comprises a baffle plate, the baffle plate being configured to baffle shredded particles of the to-be-cut material so that the shredded particles are discharged out of the moving cutting member.

36. The shredding apparatus according to claim 31, wherein the first transmission assembly comprises an epicyclic gear train and a final output shaft, the final output shaft being connected to the moving cutting member to transmit the torque of the electric motor to the moving cutting member.

37. The shredding apparatus according to any one of claims 31 to 36, further comprising a feed system configured to feed the to-be-cut material to the moving cutting member where the to-be-cut material is shredded, the feed system comprising a feeding member, the feeding member being movably provided on the housing to control a spacing between the feeding member and the stationary cutting member so as to be adapted to admit different sizes of to-be-cut materials.

38. The shredding apparatus according to claim 37, further comprising a mount on which the feeding member and the moving cutting member are secured, the mount rotating about an axis of the moving cutting member; an elastic reset member is arranged between the mount and the housing, the elastic reset member driving the feeding member to move closer to the stationary cutting member and pressing the to-be-cut material tightly; and an arc-shaped chute is further arranged on the housing, the mount being slidingly disposed in the arc-shaped chute to limit a rotational angle of the feeding member.

39. The shredding apparatus according to claim 37, wherein the transmission system further comprises a second transmission assembly, the second transmission assembly being arranged between the moving cutting member and the feeding member, the second transmission assembly being set as a belt-pulley transmission; the second transmission assembly comprises a first pulley connected to the moving cutting member, a second pulley connected to the feeding member, and a belt for power transmission; and the second transmission assembly performs power transmission between the moving cutting member and the feeding member via the first pulley, the second pulley, and the belt.

40. The shredding apparatus according to claim 37, wherein the transmission system further comprises a second transmission assembly arranged between the moving cutting member and the feeding member, the second transmission assembly comprising at least two groups of belt-driven pulleys, the second transmission assembly comprising a first group of pulleys, a second group of pulleys, and a belt; by actuating the belt, the first group of pulleys are moved toward the second group of pulleys to implement variable-speed movement of the pulleys.

41. The shredding apparatus according to claim 1, wherein the shredder body comprises: a front blade plate; a rear blade plate arranged opposite the front blade plate; and a plurality of blades supported between the front blade plate and the rear blade plate; wherein the shredder body is a splitable assembly and has a hollow cylindrical structure.

42. The shredding apparatus according to claim 41, wherein the blades rotate about a pivoting center G, and cutting edges of the blades during rotating constitute a cylindrical profile of equal diameter.

43. The shredding apparatus according to claim 42, wherein the blade has a central division line that has an angle in a range from 30° to 50° relative to a tangential rotating direction of the blade.

44. The shredding apparatus according to claim 42, wherein the shredding section further comprises a stationary cutter, the shredder body being fitted with the stationary cutter to perform an action of cutting and crushing the material; one end surface of the stationary cutter has an edge engaging the blade to thereby create a contour edge, distance H between the contour edge and the pivoting center G of the shredder body being less than 10mm.

45. The shredding apparatus according to claim 43, wherein a gap allowing for shredded particles to pass through is present between two neighboring blades.

46. The shredding apparatus according to claim 41, wherein the shredder body comprises: a rear blade plate arranged opposite the the front blade plate; and a plurality of blades distributed at intervals and supported between the front blade plate and the rear blade plate; wherein the shredder body is a splitable assembly and has a hollow cylindrical structure; wherein a minimum interval between two neighboring blades on a section V-V radially crossing the shredder body is greater than 25mm.

47. The shredding apparatus according to claim 46, wherein a number of the blades is less than or equal to 7.

48. The shredding apparatus according to claim 41, wherein the shredder body has a non-unitarily formed structure, the shredder body comprising: a front blade plate; a rear blade plate arranged opposite the front blade plate; and a plurality of blades distributed at intervals and detachably supported between the front blade plate and the rear blade plate.

49. The shredding apparatus according to claim 41, wherein the shredder body comprises: a front blade plate; a rear blade plate arranged opposite the front blade plate; and a plurality of blades supported between the front blade plate and the rear blade plate; wherein the front blade plate, the rear blade plate, and the blades are metallic members, the blades being formed by stamping, die-casting, or laser cutting.

50. The shredding apparatus according to claim 41, wherein thickness W of the shredder body ranges from 3mm to 8mm.

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