CN219632737U - Reluctance drive type electric chain saw - Google Patents
Reluctance drive type electric chain saw Download PDFInfo
- Publication number
- CN219632737U CN219632737U CN202320784531.9U CN202320784531U CN219632737U CN 219632737 U CN219632737 U CN 219632737U CN 202320784531 U CN202320784531 U CN 202320784531U CN 219632737 U CN219632737 U CN 219632737U
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- stator
- plate
- housing assembly
- chain saw
- rotor
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- 238000004804 winding Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000008093 supporting effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model relates to the technical field of electric cutting equipment, in particular to a magnetic resistance driving type electric chain saw. The reluctance drive type electric chain saw comprises a first shell component, a sawtooth plate and a power component, wherein the power component is arranged in an inner cavity of the first shell component, and one end of the sawtooth plate is connected with the front end of the first shell component; the front end of the first shell component is provided with two openings which are convenient for the chain saw to penetrate in and out, and the openings are communicated with the inner cavity of the first shell component; the power assembly comprises a second housing assembly, a rotating shaft, a stator and a rotor, wherein the rotating shaft, the stator and the rotor are all arranged in an inner cavity of the second housing assembly, the stator and the rotor are of annular structures, the rotor is located in an inner ring of the stator, the rotating shaft penetrates through the inner ring of the rotor, and two opposite sides of the first housing assembly penetrate through two ends of the rotating shaft respectively. The utility model adopts a direct drive design, the power transmission is direct, the structure is compact, and the volume is smaller; the structure is high temperature resistant, safe in use and long in service life.
Description
Technical Field
The utility model relates to the technical field of electric cutting equipment, in particular to a magnetic resistance driving type electric chain saw.
Background
The electric chain saw is a cutting tool which is frequently seen in daily life at present, a motor drives a chain to reciprocate, and cutting operation is carried out through staggered saw teeth which are arranged on the chain at intervals in the rotating process of the chain. At present, a permanent magnet brushless motor is mainly adopted for driving an electric chain saw commonly used in the market, compared with a brush motor, the structure of the brushless motor is simpler and more compact, the volume can be controlled to be smaller under the same power, meanwhile, the friction force is reduced during operation due to the fact that the brushless motor removes carbon brushes, the energy conversion rate is improved, and noise is remarkably reduced during high-speed rotation. However, most of the existing brushless motors have permanent magnet design, iron filings are easily absorbed in the running process of the motor to cause abnormal abrasion of the motor to damage the motor, and in addition, the permanent magnets are easily demagnetized at high temperature or under impact to damage the motor.
Disclosure of Invention
The utility model aims to provide a reluctance drive type electric chain saw, which solves the technical problems.
The technical problems solved by the utility model can be realized by adopting the following technical scheme:
a reluctance drive type electric chain saw, comprising a device body which realizes a cutting function after the chain saw is assembled, wherein,
the device body comprises a first shell component, a serration plate and a power component, wherein the power component is arranged in an inner cavity of the first shell component,
one end of the serration plate is connected with the front end of the first shell component;
the front end of the first shell component is provided with two openings which are convenient for the chain saw to penetrate in and out, and the openings are communicated with the inner cavity of the first shell component;
the power assembly comprises a second housing assembly, a rotating shaft, a stator and a rotor, wherein the rotating shaft, the stator and the rotor are arranged in an inner cavity of the second housing assembly, the stator and the rotor are of annular structures, the rotor is positioned in an inner ring of the stator, the rotating shaft penetrates through the inner ring of the rotor, and synchronously rotates after being fixedly connected, and two ends of the rotating shaft penetrate out of two opposite side surfaces of the second housing assembly respectively;
the second housing assembly comprises a second main housing and a second end cover, and an inner cavity of the power assembly is formed after the second main housing and the second end cover are spliced.
The power assembly comprises a driving gear which is fixedly connected with one end of the rotating shaft penetrating out of the second end cover, one end of the chain saw penetrates into the first shell assembly, penetrates out after winding around the driving gear, and is closed after winding around the sawtooth plate.
The power assembly comprises two stator end plates, namely a front end plate and a rear end plate, wherein the two stator end plates are respectively positioned on two sides of the stator, the front end plate is positioned between the second end cover and the stator, and the rear end plate is positioned between the stator and the second main shell.
The utility model limits the movement of the stator by arranging the stator end plate, and plays roles of limiting, insulating and fixing the structure of the stator in the inner cavity of the second housing assembly.
At least two lining plates are arranged on the stator end plate, the stator end plate is supported on the inner wall of the second housing assembly at one side of the stator end plate through the lining plates,
at least two lining plates are arranged at intervals along the annular structure of the stator end plate,
any lining plate is of an outward turning structure, the lining plate positioned on the front end plate is turned over to the front side, and the lining plate positioned on the rear end plate is turned over to the rear side.
The first shell component comprises a first main shell, a first end cover and a pressing plate, wherein the first main shell is spliced on one side of the first end cover to form an inner cavity of the first shell component, the pressing plate is connected with the other side of the first end cover, and one end, connected with the first shell component, of the serrated plate is located between the pressing plate and the first end cover.
The first shell component comprises a handheld part, a wire groove is formed in the handheld part, a power supply structure is connected after a lead wire of a winding coil on the stator is led out outwards, and the wire groove is communicated with an inner cavity of the first shell component.
The device body comprises a tensioning knob, an adjusting groove is formed in the sawtooth plate and corresponds to the adjusting groove and the tensioning knob, a through hole which is convenient for the tensioning knob to pass through is formed in the pressing plate, a locking hole which is convenient for locking after the tensioning knob is screwed in is formed in the first end cover, and the tensioning degree of the chain saw is adjusted by adjusting the telescopic travel of the sawtooth plate relative to the inner cavity of the first shell component through the tensioning knob.
The beneficial effects are that: by adopting the technical scheme, the utility model has the following advantages:
1) The direct drive type design is adopted, the motor rotor is directly connected with the saw teeth, a reduction gearbox is omitted, and the energy loss is low;
2) The carbon brush-free design is adopted, so that the structure is compact, the operation is stable, and the volume is small;
3) The design without permanent magnets is high-temperature resistant, the risk of structural damage caused by absorbing scrap iron and the problem of demagnetization are avoided, and the service life is long;
4) And constant-speed cutting is adopted, so that the heavy-load cutting efficiency is higher.
Drawings
FIG. 1 is a schematic view of an overall structure of the present utility model;
FIG. 2 is a disassembled view of FIG. 1;
FIG. 3 is an exploded view of the power assembly of the present utility model;
FIG. 4 is a schematic structural view of a first main housing of the present utility model;
fig. 5 is a schematic view of the assembled power assembly of fig. 4.
Detailed Description
In order that the manner in which the utility model is practiced, as well as the features and objects and functions thereof, will be readily understood and appreciated, the utility model will be further described in connection with the accompanying drawings. It should be noted that the terms "first," "second," "third," "fourth," and the like in the description and in the claims, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or apparatus that comprises a list of elements or units is not necessarily limited to those elements or units that are expressly listed or inherent to such product or apparatus, but may include other elements or units not expressly listed or inherent to such product or apparatus.
Referring to fig. 1 and 2, a reluctance drive type electric chain saw comprises a device body, wherein the device body comprises a first housing assembly 1, a serrated plate 2 and a power assembly 3, the power assembly 3 is arranged in an inner cavity of the first housing assembly 1,
one end of the serration plate 2 is connected with the front end of the first shell component 1;
the front end of the first shell component 1 is provided with two openings which are convenient for the chain saw to penetrate in and out, and the openings are communicated with the inner cavity of the first shell component 1;
as shown in fig. 3, the power assembly 3 includes a second housing assembly, a rotating shaft 301, a stator 302 and a rotor 303, where the rotating shaft, the stator and the rotor are all disposed in an inner cavity of the second housing assembly, the stator and the rotor are both in an annular structure, the rotor is located in an inner ring of the stator, the rotating shaft passes through the inner ring of the rotor, and the rotating shaft are fixedly connected and then synchronously rotated, and two ends of the rotating shaft respectively pass through two opposite sides of the second housing assembly.
Wherein, as shown in fig. 3, the second housing assembly comprises a second main housing 304 and a second end cover 305, and the inner cavity of the power assembly is formed after the second main housing 304 and the second end cover 305 are spliced.
Specifically, after the second main casing 304 and the second end cover 305 are assembled into an assembly structure, the assembly structure is integrally in a cylindrical structure, and after the ear seat 3041 (on which the fastener hole is arranged) is arranged on the outer wall, the assembly structure is conveniently fixed in the inner cavity of the first casing component through the fastener, so that a fastening pile which is convenient for locking in the threaded fastener such as a bolt is arranged in the inner cavity of the first casing component.
The second main casing 304 and the second end cover 305 are connected and fixed to each other by fasteners such as bolts after being assembled, and for this purpose, paired sets of fastening piles are provided on both the second main casing 304 and the second end cover 305, and the sets of fastening piles are integrally formed with the second main casing or the second end cover when the second main casing or the second end cover is formed. In the structure shown in fig. 3, a fastening pile 3051 is provided on the second end cover 305.
In addition, in order to prevent the shaft 301 from moving, shaft end retainers including a front retainer 3061 and a rear retainer 3062 and bearings including a front bearing 3071 and a rear bearing 3072 are provided at both ends thereof.
As shown in fig. 3, the stator and the rotor of the present utility model are provided as follows: the rotor and the stator are formed by overlapping a plurality of silicon steel sheets, the formed rotor comprises rotor teeth 3031 and rotor yokes 3032, and the formed stator comprises stator teeth 3021 and stator yokes 3022.
As shown in fig. 2 and 3, the power assembly includes a driving gear 309, the driving gear 309 is fixedly connected to one end of the rotating shaft 301 penetrating through the second end cover 305, one end of the chain saw penetrates into the first housing assembly, winds around the driving gear, penetrates out again and winds around the serration plate to be closed, and when the driving gear rotates after being driven by the rotor and the rotating shaft, the chain saw is driven to rotate around the serration plate.
As shown in fig. 3, the power assembly includes two stator end plates, respectively a front end plate 3081 and a rear end plate 3082, which are respectively located at front and rear sides of the stator 302, the front end plate 3081 is located between the second end cover 305 and the stator 302, and the rear end plate 3082 is located between the stator 302 and the second main casing 304.
The utility model limits the movement of the stator by arranging the stator end plate, and plays roles of limiting, insulating and fixing the structure of the stator in the inner cavity of the second housing assembly.
In the structure shown in fig. 3, at least two lining plates 30801 are provided on the stator end plate, and the stator end plate is supported on the inner wall of the second housing assembly on the side where the stator end plate is located through lining plates 30801, for example, the lining plates of the rear end plate 3082 are supported on the annular inner wall of the second main housing 304, and the lining plates of the front end plate 3081 are supported on the annular inner wall of the second end cover 305.
At least two liner plates 30801 are spaced apart along the annular structure of the stator end plates,
any one of the liners 30801 is in an eversion structure, and the liner on the front end plate 3081 is folded forward, and the liner on the rear end plate 3082 is folded backward.
It should be noted that, since the lining plate plays a role of supporting the stator end plate on the inner wall of the second housing assembly on the side where the lining plate is located, the lining plate can have a better supporting effect after being arranged as follows:
any lining plate is a curved plate, and the structure of the lining plate is attached to the inner wall of the second housing assembly after the stator end plate and the second housing assembly are assembled, so that the surface of the lining plate has a certain radian, and the lining plate can be better attached to the inner wall of the second housing assembly.
In addition, a bracket 30802 which is convenient for supporting the winding during arrangement is arranged on the inner wall of the stator inner ring.
As shown in fig. 4 and 5, the first housing assembly includes a first main casing 101, a first end cap 102, and a pressing plate 103, wherein the first main casing 101 is assembled on one side of the first end cap 102 to form an inner cavity of the first housing assembly, the pressing plate 103 is connected to the other side of the first end cap 102, and one end of the serrated plate 2 connected to the first housing assembly is located between the pressing plate 103 and the first end cap 102.
As shown in fig. 1, 2 and 4, the first housing component 1 includes a handheld portion 104, and a wire groove 105 is disposed in the handheld portion 104, so that a lead wire of a winding coil on a stator is led out outwards and then connected with a power supply structure, and the wire groove 105 is communicated with an inner cavity of the first housing component.
Specifically, when the first main casing 101 and the first end cover 102 are formed, a hand-held portion forming portion which is convenient to form a hand-held portion when the first main casing 101 and the first end cover 102 are spliced is arranged on each of the first main casing 101 and the first end cover 102, and after one side surface of any hand-held portion forming portion is sunken, when the first main casing 101 and the first end cover are spliced to form a hand-held portion, sunken splicing and forming are carried out on the first main casing 101 and the first end cover to form a wire guide groove.
As shown in fig. 1 and 2, the device body includes a tensioning knob 4, an adjusting groove 201 is disposed on the serrated plate 2, corresponding to the adjusting groove 201 and the tensioning knob 4, a through hole through which the tensioning knob is convenient to pass is disposed on the pressing plate 103, a locking hole through which the tensioning knob is convenient to lock after being screwed in is disposed on the first end cover 102, and the tensioning degree of the chain saw is adjusted by adjusting the telescopic travel of the serrated plate relative to the inner cavity of the first housing assembly through the tensioning knob.
When the tensioning degree of the chain saw is adjusted, the tensioning knob is unscrewed, the saw tooth plate is pushed into or pulled out of the inner cavity of the first shell assembly for a certain distance, the chain saw is adjusted to a proper degree of tightness, and the pressing plate, the saw tooth plate and the first end cover are fixed after the tensioning knob is screwed, so that the saw tooth plate is prevented from shaking during working.
In addition, as shown in fig. 1 and 2, a control switch 6 is arranged on the first shell component, so that the power component is conveniently controlled to be electrified to start the chain saw to work;
the tail part of the first shell component is provided with an opening at the tail end of the handheld part 104, and a protective tube 5 is arranged in the opening, so that the cable lead is conveniently protected;
the front end of the first shell component is provided with a protection plate 7, so that splashed sundries are prevented during processing operation.
In conclusion, the utility model adopts brushless and permanent magnet-free design, and has the advantages of simple structure, stable operation, high temperature resistance, low noise and long service life; meanwhile, the power part and the working part (chain saw) are designed in a direct driving way, compared with a traditional structure, the device is direct in power transmission, small in loss, high in energy conversion rate, beneficial to the design without a permanent magnet, free of the problem of damage to devices caused by adsorption of metal chips, safe to use, high in reliability and relatively long in service life.
It should be noted that, the reluctance drive type electric chain saw structure of the present utility model is a chain saw structure using a switched reluctance motor (i.e. a power component) as a power source, and the power source is based on the principle that magnetic flux always closes along a maximum path of magnetic conductance, when the tooth center lines of the stator and the rotor are not coincident and the magnetic conductance is not maximum, the magnetic field will generate magnetic pulling force to form reluctance torque, so that the rotor rotates to the maximum position of magnetic conductance. When current is sequentially supplied to each phase winding on the stator teeth, the rotor will rotate in a direction opposite to the energized phase sequence in sequence.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (7)
1. The reluctance drive type electric chain saw comprises a device body, and is characterized in that the device body comprises a first shell component, a serration plate and a power component, the power component is arranged in an inner cavity of the first shell component,
one end of the serration plate is connected with the front end of the first shell component;
the front end of the first shell component is provided with two openings which are convenient for the chain saw to penetrate in and out, and the openings are communicated with the inner cavity of the first shell component;
the power assembly comprises a second housing assembly, a rotating shaft, a stator and a rotor, wherein the rotating shaft, the stator and the rotor are arranged in an inner cavity of the second housing assembly, the stator and the rotor are of annular structures, the rotor is positioned in an inner ring of the stator, the rotating shaft penetrates through the inner ring of the rotor, and synchronously rotates after being fixedly connected, and two ends of the rotating shaft penetrate out of two opposite side surfaces of the second housing assembly respectively;
the second housing assembly comprises a second main housing and a second end cover, and an inner cavity of the power assembly is formed after the second main housing and the second end cover are spliced.
2. The reluctance drive type electric chain saw according to claim 1, wherein the power assembly comprises a drive gear fixedly connected to one end of the rotating shaft penetrating through the second end cover, and one end of the chain saw penetrates into the first housing assembly, penetrates out after winding around the drive gear, and is closed after winding around the serrated plate.
3. The reluctance drive electric chainsaw of claim 1, wherein the power assembly includes two stator end plates, a front end plate and a rear end plate, the two stator end plates being located on opposite sides of the stator, the front end plate being located between the second end cap and the stator, the rear end plate being located between the stator and the second main housing.
4. A reluctance drive electric chain saw as set forth in claim 3, wherein the stator end plate is provided with at least two lining plates by which the stator end plate is supported on an inner wall of the second housing assembly on the side thereof,
at least two lining plates are arranged at intervals along the annular structure of the stator end plate,
any lining plate is of an outward turning structure, the lining plate positioned on the front end plate is turned over to the front side, and the lining plate positioned on the rear end plate is turned over to the rear side.
5. The reluctance drive electric chain saw according to any one of claims 1 to 4, wherein the first housing assembly includes a first main housing, a first end cap, and a pressing plate, the first main housing is assembled to one side of the first end cap to form an inner cavity of the first housing assembly, the pressing plate is connected to the other side of the first end cap, and one end of the serrated plate connected to the first housing assembly is located between the pressing plate and the first end cap.
6. The reluctance drive electric chain saw as set forth in claim 5, wherein the first housing assembly includes a hand-held portion having a wire slot disposed therein, the wire slot communicating with an interior cavity of the first housing assembly.
7. The reluctance drive type electric chain saw according to claim 5, wherein the device body comprises a tensioning knob, the serrated plate is provided with an adjusting groove corresponding to the adjusting groove and the tensioning knob, the pressing plate is provided with a through hole for the tensioning knob to pass through, and the first end cover is provided with a locking hole for locking after screwing in the tensioning knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320784531.9U CN219632737U (en) | 2023-04-11 | 2023-04-11 | Reluctance drive type electric chain saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320784531.9U CN219632737U (en) | 2023-04-11 | 2023-04-11 | Reluctance drive type electric chain saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219632737U true CN219632737U (en) | 2023-09-05 |
Family
ID=87810161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320784531.9U Active CN219632737U (en) | 2023-04-11 | 2023-04-11 | Reluctance drive type electric chain saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219632737U (en) |
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2023
- 2023-04-11 CN CN202320784531.9U patent/CN219632737U/en active Active
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