CN215684543U

CN215684543U - Chopper reliable in use

Info

Publication number: CN215684543U
Application number: CN202121461275.7U
Authority: CN
Inventors: 朱泽春; 刘咸
Original assignee: Hangzhou Joyoung Household Electrical Appliances Co Ltd
Current assignee: Hangzhou Joyoung Household Electrical Appliances Co Ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-02-01
Anticipated expiration: 2031-06-29

Abstract

The utility model discloses a reliably-used chopper which comprises a chopping container, a main machine arranged on the chopping container, and a chopping knife positioned in the chopping container, wherein a motor component for driving the chopping knife to rotate is contained in the main machine, the chopping knife comprises a knife rest and a knife wing connected to the knife rest, the chopping knife also comprises a transmission component and a limiting piece arranged on the knife rest, the transmission component comprises a transmission rod capable of sliding relative to the knife rest to be in transmission connection with the motor component, and the limiting piece limits the deviation of the transmission rod towards the knife rest when the transmission rod slides. Through setting up the locating part, can in time carry on spacingly to the transfer line when the transfer line takes place the skew, thereby reduce the range of transfer line skew, make the transfer line move the orbit and can not appear great deviation when sliding, use more reliably, simultaneously, the transfer line also can with the locating part butt after taking place the skew, avoid transfer line and knife rest contact to make the transfer line cause the wearing and tearing of transfer line and knife rest in the sliding process, can improve the reliability of using equally.

Description

Chopper reliable in use

Technical Field

The utility model belongs to the field of food processing devices, and particularly relates to a reliably-used chopper.

Background

The meat grinder is widely used by people, the existing meat grinder on the market generally places a main machine on the upper part of a cup body, a motor and a switch for controlling the motor are arranged at the main machine, a chopping knife for chopping food materials is positioned inside the cup body, the chopping knife comprises a transmission rod in transmission connection with the motor and a knife rest for protecting the transmission rod, and the motor drives the transmission rod through a motor shaft so that the chopping knife rotates to chop the food materials; when the motor is assembled with the shredding knife, the transmission rod slides along the knife rest to enable the transmission rod to be exposed out of the knife rest and to be in close contact with a motor shaft, and the transmission rod can be deviated due to unbalanced stress in the process of moving relative to the knife rest, so that the connection reliability between the transmission rod and the motor shaft can be reduced, the transmission rod can also be contacted with the knife rest to generate friction after being deviated, and the service life of the transmission rod and the knife rest is shortened.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings, the utility model provides a shredder which is reliable in use, and the transmission rod is limited by the limiting piece when the transmission rod reciprocates, so that the transmission rod and the knife rest are prevented from being deviated and directly contacted when sliding relatively.

The utility model is realized by the following technical scheme:

a reliably-used shredder comprises a shredding container, a main machine and a shredding knife, wherein the main machine is placed on the shredding container, the shredding knife is positioned in the shredding container, a motor assembly for driving the shredding knife to rotate is contained in the main machine, the shredding knife comprises a knife rest and knife wings connected to the knife rest, the shredding knife further comprises a transmission assembly and a limiting part arranged on the knife rest, the transmission assembly comprises a transmission rod capable of sliding relative to the knife rest and in transmission connection with the motor assembly, and the limiting part limits the transmission rod to deviate towards the knife rest when sliding. Through setting up the locating part, can in time carry on spacingly to the transfer line when the transfer line takes place the skew, thereby reduce the range of transfer line skew, make the transfer line move the orbit and can not appear great deviation when sliding, it is more reliable to use, simultaneously, the transfer line also can with the locating part butt after taking place the skew, avoid transfer line and knife rest contact to make the transfer line cause the wearing and tearing of transfer line and knife rest at the slip in-process, improve the life of knife rest, can improve the reliability of using equally.

Furthermore, the limiting piece is arranged in the tool rest and is of a cylindrical structure, and at least part of the outer wall of the limiting piece abuts against the inner wall of the tool rest, so that the limiting piece and the tool rest rotate synchronously. The limiting part is of a cylindrical structure and is matched with the tool rest in shape, the structure is simple, the processing is convenient, and meanwhile, the limiting part is convenient to install.

Furthermore, the limiting part forms a sliding cavity for the transmission rod to extend into, and the transmission rod in the sliding cavity is abutted against the inner wall of the sliding cavity after being deflected. The sliding cavity is formed in the limiting part so that the transmission rod can slide in the limiting part, and the limiting part can limit the transmission rod conveniently.

Further, the transmission assembly further comprises an elastic piece connected to the transmission rod, a sliding cavity provided with the elastic piece is formed in the limiting piece, the transmission rod is in transmission connection with the motor assembly, the elastic piece can be driven to elastically deform, and the inner wall of the sliding cavity is abutted and limited to the elastic piece in the state of the offset deformation direction. The transmission rod can automatically reset under the action of elastic force, and the device has a simple structure and is convenient to use.

Furthermore, the shredding knife also comprises a shaft sleeve which is connected to the bottom end of the knife rest and extends into the sliding cavity, the shaft sleeve is in transmission connection with the shredding container, one end of the elastic piece is connected to the shaft sleeve, the other end of the elastic piece is connected to the transmission rod, and the transmission rod drives the elastic piece to elastically deform. The shaft sleeve is used for connecting the tool rest and the chopping container, so that transmission between the tool rest and the chopping container is more stable, the shaft sleeve and the transmission rod are respectively located at two ends of the limiting part, the elastic part is connected to the shaft sleeve and the transmission rod, the limiting part also leaves a space for the elastic part, and the situation that the elastic part is too small in space where the elastic part is located, so that the elastic part is too large in compression amount and large in recovery difficulty after deflection occurs to the elastic part with too large compression amount is avoided.

Furthermore, the shaft sleeve is provided with a first mounting step which is positioned in the limiting part and connected with the elastic part, and the transmission rod is provided with a second mounting step which is positioned in the limiting part and connected with the elastic part. Increase the area of contact of transfer line and elastic component, the transfer line acts on the power of elastic component more even, can prevent that the elastic component from taking place the skew when compressing the elastic component, and simultaneously, first installation step and second installation step also carry on spacingly to the both ends of elastic component respectively, can prevent equally that the elastic component from taking place the skew at deformation in-process.

Further, the tool rest comprises an upper tool rest and a lower tool rest provided with a limiting piece, and the upper tool rest is connected to the lower tool rest to form a mounting cavity for accommodating the limiting piece. Through the components of a whole that can function independently setting, can unpack the top rest apart with the lower tool rest when wasing, can wash the residue of gap department clean, wash more thoroughly, and more swift accuracy when the locating part installation.

Furthermore, the upper tool rest is provided with a transmission hole for the transmission rod to pass through, the distance between the limiting piece and the transmission hole in the axial direction is d1, the distance between the limiting piece and the transmission hole in the radial direction is d2, d1 is more than or equal to 0.1mm and less than or equal to 0.5mm, and d2 is more than or equal to 0.1mm and less than or equal to 0.5 mm.

Furthermore, the knife rest is provided with a transmission end close to the motor assembly, the chopping knife further comprises a metal sliding part arranged at the transmission end, the transmission rod penetrates through the metal sliding part and extends into the limiting part, and the transmission rod is a metal transmission rod. The resistance of the metal transmission rod during sliding is reduced, and the use reliability of the metal transmission rod and the metal sliding part is improved.

Further, the metal sliding piece forms a spline hole, and the transmission rod is provided with an external spline inserted in the spline hole. The spline coupling stress is more even, simultaneously because the groove is shallower, the root of tooth department stress concentration is less, and the number of teeth is more, and total area of contact is great, therefore can bear great load, and metal sliding part and metal drive link pass through the spline coupling, and the centering nature and the guidance quality of metal sliding part and metal drive link are good.

Drawings

FIG. 1 is a schematic diagram illustrating an exploded view of an exemplary embodiment of a shredder according to the present invention;

FIG. 2 is a schematic diagram illustrating an exploded view of an exemplary embodiment of a chopper in accordance with an exemplary embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view illustrating an exemplary embodiment of a chopper in accordance with a first embodiment of the present invention;

FIG. 4 is a schematic top view illustrating an exemplary embodiment of a chopper in accordance with a first embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view illustrating an exemplary embodiment of a chopper in accordance with a second embodiment of the present invention.

Reference numerals:

1. the main frame, 2, the shredding container, 3, the shredding knife, 31, the knife rest, 311, the upper knife rest, 312, the transmission hole, 313, the transmission end, 314, the lower knife rest, 32, the knife wing, 33, the transmission component, 331, the transmission rod, 332, the elastic component, 333, the second mounting step, 34, the limiting component, 341, the sliding cavity, 35, the shaft sleeve, 351, the first mounting step, 36, the metal sliding component, 361 and the spline hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms of orientation such as left, right, up, down, front and back in the embodiments of the present invention are only relative concepts or are referred to a normal use state of the product, i.e., a traveling direction of the product, and should not be considered as limiting.

In addition, the dynamic terms such as "relative movement" mentioned in the embodiments of the present invention include not only a positional change but also a movement in which a state changes without a relative change in position such as rotation or rolling.

Finally, it is noted that when an element is referred to as being "on" or "disposed" to another element, it can be on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

A shredder for reliable use as shown in fig. 1 to 5, which comprises a shredding container 2, a main machine 1 placed on the shredding container 2 and a shredding knife 3 positioned in the shredding container 2, wherein the main machine 1 is internally provided with a motor assembly for driving the shredding knife 3 to rotate, the shredding knife 3 comprises a knife rest 31 and a knife wing 32 connected to the knife rest 31, the shredding knife 3 further comprises a transmission assembly 33, and the transmission assembly 33 comprises a transmission rod 331 which can slide relative to the knife rest 31 to be in transmission connection with the motor assembly; the motor assembly comprises a motor and a motor shaft, the transmission rod 331 plays a role in connecting the motor shaft with the knife rest 31 in a transmission mode, the motor can be driven to rotate by the motor when being started, the transmission rod 331 is driven to rotate through the motor shaft, the knife rest 31 is driven to rotate through the transmission rod 331, the knife rest 31 realizes the rotation of the knife wings 32 when rotating, and food materials in the chopping container 2 are crushed through the knife wings 32.

In order to ensure the safety of the shredder during use, a switch for starting and stopping the motor assembly is arranged on the main machine 1, and when the main machine 1 is placed on the shredding container 2, the switch is pressed to enable a motor shaft in the motor assembly to be in transmission connection with the part of the transmission rod 331 extending out of the knife rest 31, so that the rotation of the shredding knife 3 is realized; when transmission rod 331 is mounted on knife rest 31, transmission rod 331 can be directly arranged outside knife rest 31 to be in transmission connection with a motor shaft, transmission rod 331 can slide relative to knife rest 31, and when the switch is pressed, the motor shaft presses transmission rod 331 into knife rest 31 to realize tight connection of the motor shaft and transmission rod 331, or transmission rod 331 can also be arranged in knife rest 31, and when the switch is pressed, knife rest 31 is correspondingly moved downwards to expose transmission rod 331 out of knife rest 31 to be in transmission connection with the motor shaft, and at the same time, transmission rod 331 and knife rest 31 also slide relatively.

In order to reduce the resistance of the transmission rod 331 during sliding, a mounting gap is formed between the part of the transmission rod 331 extending into the tool holder 31 and the inner wall of the tool holder 31, so that friction caused by contact can be avoided, but a moving space is left for the transmission rod 331 positioned in the tool holder 31, the transmission rod 331 can deviate towards the inner wall of the tool holder 31 during sliding, the transmission rod 331 is easy to move unsmoothly, the phenomenon of blocking occurs, and the transmission connection between the transmission rod 331 and a motor shaft can be influenced.

As shown in fig. 3, the chopping knife 3 further comprises a stopper 34 provided on the knife holder 31, the stopper 34 restricting the driving rod 331 from being shifted toward the knife holder 31 when sliding; through the limiting piece 34, when the transmission rod 331 deviates, the transmission rod 331 can be limited in time, so that the deviation amplitude of the transmission rod 331 is reduced, the movement track of the transmission rod 331 does not deviate greatly when sliding, the use is more reliable, meanwhile, the transmission rod 331 can be abutted against the limiting piece 34 after the deviation occurs, the transmission rod 331 is prevented from contacting the knife rest 31, the transmission rod 331 is prevented from wearing the transmission rod 331 and the knife rest 31 in the sliding process, the service life of the knife rest 31 is prolonged, and the use reliability can be improved.

The first embodiment is as follows:

as shown in fig. 2 and fig. 3, in the present embodiment, the motor shaft is tightly connected to the driving rod 331 by pressing the driving rod 331 into the tool holder 31, the position-limiting member 34 is disposed in the tool holder 31 and has a cylindrical structure, and at least a part of the outer wall of the position-limiting member 34 abuts against the inner wall of the tool holder 31, so that the position-limiting member 34 and the tool holder 31 rotate synchronously; the limiting piece 34 is a cylindrical structure, the limiting piece 34 is matched with the knife rest 31 in shape, the structure is simple, the processing is convenient, meanwhile, the installation of the limiting piece 34 is convenient, the gap of the contact part of the outer wall of the limiting piece 34 when the outer wall of the limiting piece is abutted to the inner wall of the knife rest 31 is smaller, the limiting piece 34 and the knife rest 31 rotate synchronously, meanwhile, the outer wall of the limiting piece 34 is abutted to the inner wall of the knife rest 31, the knife rest 31 can limit the limiting piece 34, after the transmission rod 331 is offset and abutted to the limiting piece 34, the limiting piece 34 cannot be offset under the action of the transmission rod 331, and the limiting effect of the limiting piece 34 on the transmission rod 331 is better.

When the limiting member 34 is installed, the limiting member 34 can be separately formed by machining, the machining is convenient, the limiting member 34 after being machined is installed in the tool holder 31, or the limiting member 34 can be connected with the tool holder 31 in an integrated manner, the structural strength is high, and the position where the limiting member 34 and the tool holder 31 are integrally formed is the abutting position of the outer wall of the limiting member 34 and the inner wall of the tool holder 31.

The limiting piece 34 is in transmission connection with the shredding container 2 through the lower end, the upper end of the limiting piece 34 is provided for the transmission rod 331 to extend into, the limiting piece 34 abuts against the inner wall of the knife rest 31 through at least part of the outer wall, and can abut against the knife rest 31 through the outer wall at the lower end of the limiting piece 34, namely the width of the horizontal section at the lower end of the limiting piece 34 is larger than that at the upper end of the limiting piece 34, so that the structural strength of the connection part of the limiting piece 34 and the shredding container 2 is enhanced, and meanwhile, the limiting effect is better when the transmission rod 331 slides in the limiting piece 34 by reducing the size at the upper end of the limiting piece 34; or, the outer wall of the limiting piece 34 is completely contacted with the inner wall of the tool rest 31, and the synchronous rotation effect of the limiting piece 34 and the tool rest 31 is better; it can be understood that the limiting of the transmission rod 331 and the synchronous rotation with the tool holder 31 can be realized no matter how many contact parts of the outer wall of the limiting member 34 and the inner wall of the tool holder 31 are.

Preferably, the limiting member 34 is a polygonal cylindrical structure, and when the limiting member 34 contacts the inner wall of the tool holder 31, the limiting member 34 transmits power to the tool holder 31 through a polygonal surface, so that the transmission effect is better; the cross section of the stopper 34 in the horizontal direction may be a regular polygon or an irregular shape.

In this embodiment, the limiting element 34 may be the polygonal cylindrical structure, that is, the limiting element 34 is an integral structure, or the limiting element 34 may also be composed of a plurality of arc-shaped walls, the plurality of arc-shaped walls are arranged at intervals around the transmission rod 331, and a gap between adjacent arc-shaped walls is smaller than a width of the transmission rod 331, so that the transmission rod 331 is prevented from sliding out of the gap between adjacent arc-shaped walls, and the limiting of the transmission rod 331 can also be achieved.

In order to facilitate the extension of the transmission rod 331, the limiting member 34 forms a sliding cavity 341 into which the transmission rod 331 extends, and the transmission rod 331 located in the sliding cavity 341 abuts against the inner wall of the sliding cavity 341 after being deflected; the sliding cavity 341 is formed inside the limiting member 34 so that the driving rod 331 slides inside the limiting member 34, and the driving rod 331 is limited by the limiting member 34, the driving rod 331 abuts against the inner wall of the sliding cavity 341 after being deflected, at least part of the outer wall of the limiting member 34 abuts against the inside of the knife holder 31, and the driving rod 331 is prevented from contacting with the knife holder 31 after being deflected by the inner and outer walls of the limiting member 34.

In the embodiment, the motor shaft is pressed into the knife rest 31 through the transmission rod 331 so as to realize tight connection between the motor shaft and the transmission rod 331, when the food material is shredded and the main body 1 is taken away from the shredding container 2, the motor shaft is not in contact with the transmission rod 331 any more, so that the transmission rod 331 is not subjected to the acting force of the motor shaft any more, and in order to facilitate the next contact between the transmission rod 331 and the motor shaft, the transmission rod 331 is restored to the state before being pressed down, so that the motor shaft is in contact with the transmission rod 331 more quickly.

In order to realize the quick reset of the transmission rod 331 after the transmission rod 331 is separated from the motor shaft, the transmission assembly 33 further comprises an elastic member 332 connected to the transmission rod 331, a sliding cavity 341 provided with the elastic member 332 is formed in the limiting member 34, the elastic member 332 can be driven to generate elastic deformation under the state that the transmission rod 331 is in transmission connection with the motor assembly, and the inner wall of the sliding cavity 341 is abutted with the elastic member 332 in the state of the offset deformation direction for limiting; when the motor shaft presses the transmission rod 331 downwards, the elastic member 332 is correspondingly compressed and generates an elastic force acting on the transmission rod 331, so that the transmission rod 331 is urged to move towards the motor shaft, and after the host 1 is taken away, the transmission rod 331 can automatically reset under the action of the elastic force, and the structure is simple and the use is convenient; however, after the elastic member 332 is arranged, because the elastic member 332 is connected with the transmission rod 331, after the transmission rod 331 deflects, the elastic member 332 is driven to deflect simultaneously, and the limiting member 34 can limit the elastic member 332 at the same time, the elastic member 332 abuts against the limiting member 34 in the deflection deformation direction, so that the limiting member 34 can prevent the elastic member 332 from being blocked due to lateral pressure caused by excessive deflection of the elastic member 332 and being incapable of rebounding, which affects the connection between the transmission rod 331 and the motor shaft, and meanwhile, the limiting member 34 can also prevent the elastic member 332 from being disengaged from the transmission shaft due to excessive deflection, thereby effectively ensuring the reliability of the extension and retraction of the transmission rod 331.

The shredding knife 3 further comprises a shaft sleeve 35 connected to the bottom end of the knife rest 31 and extending into the sliding cavity 341, the shaft sleeve 35 is in transmission connection with the shredding container 2, one end of an elastic member 332 is connected to the shaft sleeve 35, the other end of the elastic member is connected to a transmission rod 331, and the transmission rod 331 drives the elastic member 332 to generate elastic deformation; the shaft sleeve 35 is used for connecting the tool holder 31 and the shredding container 2, so that the transmission between the tool holder 31 and the shredding container 2 is more stable, the shaft sleeve 35 and the transmission rod 331 are respectively located at two ends of the limiting piece 34, after the elastic piece 332 is connected to the shaft sleeve 35 and the transmission rod 331, the limiting piece 34 also leaves a space for the elastic piece 332, and the situation that the elastic piece 332 is compressed too much due to too small space where the elastic piece 332 is located is avoided, and the elastic piece 332 with too much compression is difficult to recover after being deflected is avoided.

The elastic piece 332 can be a spring, the transmission rod 331 and the shaft sleeve 35 are both cylindrical structures, the spring can be conveniently sleeved, the transmission rod 331 and the shaft sleeve 35 can limit the spring when the spring is connected with the transmission rod 331 and the shaft sleeve 35, and the spring can be prevented from deviating in the deformation process.

The shaft sleeve 35 is provided with a first mounting step 351 which is positioned in the limiting part 34 and connected with the elastic part 332, and the transmission rod 331 is provided with a second mounting step 333 which is positioned in the limiting part 34 and connected with the elastic part 332; two ends of the elastic member 332 are respectively connected to the first mounting step 351 and the second mounting step 333, when the transmission rod 331 moves, the elastic member 332 can be compressed through the second mounting step 333, the contact area between the transmission rod 331 and the elastic member 332 is increased, the force applied to the elastic member 332 by the transmission rod 331 is more uniform, the elastic member 332 can be prevented from deviating when the elastic member 332 is compressed, meanwhile, the first mounting step 351 and the second mounting step 333 respectively limit the two ends of the elastic member 332, and the elastic member 332 can also be prevented from deviating in the deformation process.

In this embodiment, the tool holder 31 may be an integral structure, the structural strength is high, the processing is convenient, the tool holder 31 forms an installation cavity for installing the limiting member 34 along the axial direction, after the limiting member 34 is integrally connected to the installation cavity, the elastic member 332 is placed in the limiting member 34, the transmission rod 331 and the shaft sleeve 35 are respectively installed at the upper end and the lower end of the tool holder 31 and extend into the sliding cavity 341 in the limiting member 34 through the installation cavity, the shaft sleeve 35 is fixed with the tool holder 31, and the transmission rod 331 can slide in the limiting member 34 and compress the elastic member 332.

In this embodiment, the tool holder 31 may also be a split structure, the tool holder 31 includes an upper tool holder 311 and a lower tool holder 314 provided with the limiting member 34, and the upper tool holder 311 is connected to the lower tool holder 314 to form a mounting cavity for accommodating the limiting member 34; through the components of a whole that can function independently setting, can unpack the top rest 311 and lower tool rest 314 apart when wasing, can wash the residue of gap department clean, wash more thoroughly, and when installation locating part 34, also can install locating part 34 at top rest 311 or lower tool rest 314 back, assemble top rest 311 and lower tool rest 314 into a whole again, locating part 34 installs more swiftly accurately.

When the stopper 34 is integrally formed and connected with the tool post 31, since the tool post 31 is divided into the upper tool post 311 and the lower tool post 314, the stopper 34 may be integrally formed with the upper tool post 311 or integrally formed with the lower tool post 314; preferably, the position-limiting element 34 is integrally formed on the lower tool holder 314, so that after the upper tool holder 311 is assembled with the lower tool holder 314, a gap can be formed between the part of the position-limiting element 34 located between the upper tool holder 311 and the upper tool holder 311, and the position-limiting effect is better when the transmission rod 331 slides in the position-limiting element 34.

The upper tool rest 311 is provided with a first clamping piece extending along the radial direction, and the lower tool rest 314 is provided with a second clamping piece matched with the first clamping piece; go up knife rest 311 and lower knife rest 314 when assembling along the axial concatenation together, when the equipment completion back, can restrict upper knife rest 311 and lower knife rest 314 along axial separation through first joint spare and second joint spare joint, knife rest 31 is more stable when rotating.

When the upper tool holder 311 and the lower tool holder 314 are assembled, since the position-limiting member 34 is integrally formed with the lower tool holder 314, the lower tool holder 314 and the position-limiting member 34 extend into the upper tool holder 311 to be assembled with the upper tool holder 311, and therefore, the blade 32 is correspondingly connected to the portion of the upper tool holder 311 and the portion of the lower tool holder 314 not extending into the upper tool holder 311; and the upper knife rest 311 and the lower knife rest 314 are both connected with the blades 32, so that the whole stress of the knife rest 31 is more balanced when the food materials are chopped, the coverage area is wider, and the chopping effect on the food materials is better.

Drive link 331 extends axially into blade carrier 31, blade carrier 31 has drive end 313 adjacent to the motor assembly and a fixed end connected to shredding container 2, fixed end and drive end 313 are respectively located at two sides of blade carrier 31, shredding blade 3 further comprises metal sliding member 36 located at drive end 313, drive link 331 passes through metal sliding member 36 and extends into limiting member 34, and drive link 331 is metal drive link 331; the existing tool post 31 generally adopts a plastic structure, when the metal transmission rod 331 passes through the metal sliding part 36 to slide, the metal transmission rod 331 can be prevented from contacting the plastic tool post 31, the resistance of the metal transmission rod 331 during sliding is reduced, and the use reliability of the metal transmission rod 331 and the metal sliding part 36 is improved.

Meanwhile, referring to fig. 4, the metal sliding member 36 forms a spline hole 361, and the transmission rod 331 is provided with an external spline inserted into the spline hole 361; the spline coupling stress is uniform, and simultaneously, because the groove is shallow, the stress concentration at the tooth root is small, the number of teeth is large, and the total contact area is large, so that a large load can be borne, and the metal sliding part 36 and the metal transmission rod 331 are coupled through the spline, so that the alignment and the guidance performance of the metal sliding part 36 and the metal transmission rod 331 are good.

In order to facilitate the matching of the transmission rod 331 and the upper tool holder 311, as shown in fig. 2, the upper tool holder 311 forms a transmission hole 312 for the transmission rod 331 to pass through, the distance between the limiting member 34 and the transmission hole 312 in the axial direction is d1, the distance between the limiting member 34 and the transmission hole 312 in the radial direction is d2, d1 is greater than or equal to 0.1mm and less than or equal to 0.5mm, and d2 is greater than or equal to 0.1mm and less than or equal to 0.5 mm; in this embodiment, the distance between the transmission hole 312 and the limiting member 34 is the distance between the inner wall of the upper port of the sliding cavity 341 in the limiting member 34 and the inner wall of the transmission hole 312, if the distance between the limiting member 34 and the transmission hole 312 in the axial direction is greater than 0.5mm, the transmission rod 331 extends into the limiting member 34 after extending into the transmission hole 312 by a certain distance, so that the difficulty of the cooperation between the transmission rod 331 and the limiting member 34 is improved, if the distance between the limiting member 34 and the transmission hole 312 in the axial direction is less than 0.1mm, the distance between the limiting member 34 and the transmission hole 312 is too close, the limiting member 34 is easily contacted with the outer wall of the transmission hole 312 to generate friction, and the use of the limiting member 34 is affected; when the distance between the limiting member 34 and the transmission hole 312 in the radial direction is less than 0.1mm, when the transmission rod 331 extends through the transmission hole 312, the transmission rod 331 is easily blocked by the outer wall of the limiting member 34 and cannot extend into the limiting member 34; if the distance between the limiting member 34 and the transmission hole 312 in the radial direction is greater than 0.5mm, the distance between the transmission rod 331 and the inner wall of the limiting member 34 will also increase after the transmission rod 331 extends into the limiting member 34, and the limiting effect of the limiting member 34 on the transmission rod 331 is poor.

It can be understood that the transmission rod 331 extends into the limiting member 34 through the metal sliding member 36 located at the transmission end 313, and therefore, the transmission hole 312 is also formed at the transmission end 313, and the metal sliding member 36 is located at the transmission hole 312; when the metal sliding member 36 is disposed at the driving hole 312 of the driving end 313, d1 is the distance between the limiting member 34 and the spline hole 361 in the axial direction, and d2 is the distance between the limiting member 34 and the spline hole 361 in the radial direction.

It should be noted that variations of the above-described structure of the present embodiment can also be applied to other embodiments of the present invention.

Example two:

as shown in fig. 5, in the present embodiment, the transmission rod 331 is located in the tool holder 31, and when the switch is pressed, the tool holder 31 is driven to correspondingly move downward, so that the transmission rod 331 is exposed out of the tool holder 31 and is in transmission connection with the motor shaft, the limiting member 34 is located in the tool holder 31 and has a cylindrical structure, and at least a part of an outer wall of the limiting member 34 abuts against an inner wall of the tool holder 31, so that the limiting member 34 and the tool holder 31 rotate synchronously; the limiting piece 34 is a cylindrical structure, the limiting piece 34 is matched with the knife rest 31 in shape, the structure is simple, the processing is convenient, meanwhile, the installation of the limiting piece 34 is convenient, the gap of the contact part of the outer wall of the limiting piece 34 when the outer wall of the limiting piece is abutted to the inner wall of the knife rest 31 is smaller, the limiting piece 34 and the knife rest 31 rotate synchronously, meanwhile, the outer wall of the limiting piece 34 is abutted to the inner wall of the knife rest 31, the knife rest 31 can limit the limiting piece 34, after the transmission rod 331 is offset and abutted to the limiting piece 34, the limiting piece 34 cannot be offset under the action of the transmission rod 331, and the limiting effect of the limiting piece 34 on the transmission rod 331 is better.

In this embodiment, the transmission rod 331 may be an integral structure, and the transmission rod 331 passes through the knife holder 31 and extends into the limiting member 34, so as to limit the transmission rod 331 through the limiting member 34, or the transmission rod 331 may also be a separate structure, that is, the transmission rod 331 is composed of a first transmission rod and a second transmission rod, when the knife holder 31 is pressed down and moved, the first transmission rod is exposed outside the knife holder 31 and is in transmission connection with the motor shaft, the second transmission rod is in transmission connection with the shredding container 2, and the motor assembly drives the shredding knife 3 to rotate through the first transmission rod and the second transmission rod.

In order to realize the quick reset of the knife holder 31, the transmission assembly 33 further comprises an elastic member 332 connected to the transmission rod 331, a sliding cavity 341 provided with the elastic member 332 is formed in the limiting member 34, when the knife holder 31 moves downwards, the knife holder 31 can compress the elastic member 332 to elastically deform the elastic member 332, and the inner wall of the sliding cavity 341 abuts against the elastic member 332 in the state of the offset deformation direction for limiting; when the tool holder 31 compresses the elastic part 332, the elastic part 332 correspondingly generates an elastic force acting on the tool holder 31 to urge the tool holder 31 to move upwards, and after the main machine 1 is taken away, the tool holder 31 can automatically reset under the action of the elastic force, so that the structure is simple and the use is convenient; however, after the elastic member 332 is arranged, because the elastic member 332 is connected with the transmission rod 331, after the transmission rod 331 deflects, the elastic member 332 is driven to deflect simultaneously, and the limiting member 34 can limit the elastic member 332 at the same time, the elastic member 332 abuts against the limiting member 34 in the deflection deformation direction, so that the limiting member 34 can prevent the elastic member 332 from being blocked due to lateral pressure caused by excessive deflection of the elastic member 332 and being incapable of rebounding, which affects the connection between the transmission rod 331 and the motor shaft, and meanwhile, the limiting member 34 can also prevent the elastic member 332 from being disengaged from the transmission shaft due to excessive deflection, thereby effectively ensuring the reliability of the extension and retraction of the transmission rod 331.

When the transmission rod 331 is assembled by the first transmission rod and the second transmission rod, the elastic member 332 is sleeved on the first transmission rod.

In the present embodiment, the knife rest 31 also has a driving end 313 adjacent to the motor assembly and a fixed end connected to the shredding container 2, the fixed end and the driving end 313 are respectively located at two sides of the knife rest 31, since the driving rod 331 is exposed by the movement of the knife rest 31, therefore, the knife rest 31 needs to be kept clear at the moving path when moving downwards, therefore, the movement clearance is formed between the limiting member 34 and the driving end 313 of the knife rest 31 in the axial direction, and the limiting member 34 is prevented from obstructing the movement of the knife rest 31 when the knife rest 31 moves downwards; it can be understood that, although a gap is left between the limiting member 34 and the driving end 313 of the tool holder 31, so that the elastic member 332 cannot be completely located in the limiting member 34, the length of the elastic member 332 located in the limiting member 34 is greater than the length of the elastic member 332 located outside the limiting member 34, and the elastic member 332 is an integral structure, even if the portion of the elastic member 332 located outside the limiting member 34 is deviated, the displacement of the elastic member 332 located in the limiting member 34 can be limited, so as to limit the overall deviation of the elastic member 332.

Since the blade holder 31 presses the elastic member 332 when moving, the elastic member 332 is sleeved at the driving rod 331 when being installed, the driving rod 331 is formed with an installation step, one end of the elastic member 332 is connected to the installation step, and the other end is connected to the lower surface of the driving end 313 of the blade holder 31, so that the blade holder 31 presses the elastic member 332 through the lower end of the driving end 313 when moving due to the fact that the driving rod 331 is in a stationary state.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A reliably used shredder comprises a shredding container, a host machine arranged on the shredding container and a shredding knife positioned in the shredding container, wherein a motor assembly for driving the shredding knife to rotate is contained in the host machine, the shredding knife comprises a knife rest and a knife wing connected to the knife rest, the shredding knife further comprises a transmission assembly and a limiting part arranged on the knife rest, the transmission assembly comprises a transmission rod capable of sliding relative to the knife rest so as to be in transmission connection with the motor assembly, and the limiting part limits the transmission rod to deflect towards the knife rest when sliding.

2. A shredder according to claim 1, wherein said retaining member is disposed within said blade carrier and is of a tubular configuration, and wherein at least a portion of an outer wall of said retaining member abuts an inner wall of said blade carrier to permit said retaining member to rotate in unison with said blade carrier.

3. A shredder for use in accordance with claim 1, wherein said retainer defines a sliding cavity into which said drive link extends, said drive link being biased within said sliding cavity into abutment with an inner wall of said sliding cavity.

4. A shredder for use in accordance with claim 1, wherein said drive assembly further comprises an elastic member connected to said drive rod, a sliding cavity is formed in said retainer for receiving said elastic member, said elastic member is capable of being driven to elastically deform in a state where said drive rod is drivingly connected to said motor assembly, and an inner wall of said sliding cavity abuts against said elastic member in a state of being biased in a deformed direction for retaining said elastic member.

5. A shredder for secured use according to claim 4, further comprising a bushing attached to a bottom end of said cutter frame and extending into said sliding cavity, said bushing drivingly connected to said shredding container, said resilient member having one end attached to said bushing and another end attached to said drive link, said drive link driving said resilient member into resilient deformation.

6. A shredder according to claim 5, wherein said hub defines a first mounting step in said retainer and connected to said resilient member, and said drive link defines a second mounting step in said retainer and connected to said resilient member.

7. A shredder for secured use according to claim 1, wherein said blade holder comprises an upper blade holder and a lower blade holder on which said retainer is disposed, said upper blade holder being attached to said lower blade holder to form a mounting cavity for receiving said retainer.

8. A shredder according to claim 7, wherein said upper cutter frame defines a drive aperture through which said drive rod passes, said stop being spaced from said drive aperture by a distance d1 in the axial direction, said stop being spaced from said drive aperture by a distance d2 in the radial direction, 0.1 mm. ltoreq. d 1. ltoreq.0.5 mm and 0.1 mm. ltoreq. d 2. ltoreq.0.5 mm.

9. A shredder for secured use according to claim 1, wherein said blade carrier has a drive end adjacent said motor assembly, said shredder blade further comprising a metal slider disposed at said drive end, said drive link extending through said metal slider and into said retainer, said drive link being a metal drive link.

10. A shredder adapted for secured use according to claim 9, wherein said metal slivers define splined openings and said drive link is provided with external splines that are received in said splined openings.