CN210840785U

CN210840785U - Charging type mini electric chain saw

Info

Publication number: CN210840785U
Application number: CN201921572969.0U
Authority: CN
Inventors: 吴贵敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2020-06-26
Anticipated expiration: 2029-09-20

Abstract

The utility model discloses a rechargeable mini electric chain saw, including lithium cell package, handle, brushless motor, reduction gears, sprocket, saw chain baffle, baffle gland, reduction gears include reduction box, reduction case lid, output shaft, planetary gear support, planetary gear, outer ring gear, motor gear, planetary gear support fix on the output shaft and install on reduction box together, outer ring gear is fixed on reduction box, planetary gear corresponds to fix on planetary gear support's gear shaft and with outer ring gear meshing, fix motor gear and planetary gear meshing at brushless motor, the sprocket is fixed on the output shaft, the saw chain baffle passes through the baffle gland correspondence and installs on sprocket and reduction box. After the structure is adopted, the portable tree branch pruning machine has the advantages of simple and reasonable structure, small volume, light weight, flexible and light single-hand operation, particular suitability for branch pruning, field leisure carrying and the like.

Description

Charging type mini electric chain saw

Technical Field

The utility model relates to a garden instrument technical field, especially a rechargeable mini electric chain saw that is used for needs such as gardens and fruit tree branch pole to maintain and field leisure.

Background

At present, the electric chain saw can be divided into a plug-in electric chain saw and a charging electric chain saw, the main functions of the electric chain saw are lumbering and wood processing, and the electric chain saw has the characteristics of high power, heavy weight, high efficiency, requirement of double-hand operation and the like. The plug-in electric chain saw is limited by a power supply, can only be used in places with power supplies and cannot be used for field operation. Although the rechargeable electric chain saw is not limited by the place of use, it is limited by the capacity of the battery pack and cannot continuously operate for a long time.

With the development of society and the advancement of science and technology, the scale of agricultural fruit trees and the area of urban gardens are further enlarged, the nursing and branch trimming work of fruit trees and gardens is heavier and heavier, and in order to improve the pruning efficiency, a plurality of people use rechargeable electric chain saws to replace the hand saws and reciprocating saws which are commonly used at present. Although the rechargeable electric chain saw can achieve the effect of pole trimming, the following problems exist: firstly, the volume is large, the weight is heavy, the operation action is inflexible, and the labor intensity is high; secondly, the operation is carried out by two hands during the use, the operation is not carried out by one hand, the trouble is brought to the occasion that the operation is carried out by one hand and the operation is carried out by the other hand when the pruning is carried out, and the cooperation of two persons is needed when the problems are met. Aiming at the problems, many manufacturers and acquaintances develop and develop the products, but no satisfactory products are produced.

Disclosure of Invention

In order to overcome the defects existing in the prior art, the utility model aims at providing a rechargeable mini electric chain saw which has simple and reasonable structure, small volume, light weight, flexible and light single-hand operation and is particularly suitable for branch trimming and field leisure carrying.

The utility model provides a technical scheme that above-mentioned technical problem adopted, it includes lithium cell package, handle, brushless motor, reduction gears, sprocket, saw chain baffle, baffle gland, reduction gears include reduction box, reduction case lid, output shaft, planetary gear support, planetary gear, outer ring gear, motor gear, planetary gear support fix on the output shaft and rotationally install on reduction box together with the output shaft, outer ring gear is fixed on reduction box with the same axis of output shaft, planetary gear corresponds to fix on planetary gear support's gear shaft and meshes with outer ring gear, motor gear fixes on brushless motor's motor output shaft and meshes with planetary gear, the sprocket passes through set screw to be fixed on the output shaft, the saw chain baffle passes through the baffle gland correspondence and installs on sprocket and reduction box.

The utility model discloses a further scheme, reduction box on be equipped with interior fixed cover and outer fixed cover, fixed including the reduction box lid is fixed sheathe in, outer fixed cover respectively with handle and brushless motor's casing fixed connection.

The utility model discloses a further scheme, reduction box on install first bearing and second bearing side by side, the output shaft rotationally installs on first bearing, the planetary gear support rotationally installs on the second bearing, reduction box is equipped with the jump ring that prevents first bearing axial displacement.

The utility model discloses a further scheme, the reducing gear box cover install with the sealed complex sealing member of motor output shaft and with the sealed complex rubber seal of motor protecgulum.

The utility model discloses a further scheme, lithium cell package detachably install on the lithium cell package connecting seat of handle tip, install starting switch on the handle, be equipped with the protection casing on the reduction box body.

After adopting above-mentioned structure, compare with prior art and have following advantage and effect: firstly, the brushless direct current motor, the planetary speed reducing mechanism, the lithium battery and the short-distance saw chain guide plate technology are adopted, the small size, the light weight, the large output force and the convenient carrying of a product are ensured, the operation mode is changed from double-hand operation into single-hand operation, the use is flexible and light, and the use flexibility and the work efficiency of the product are improved; secondly, because the chain wheel is fixed on the output shaft through the fixing screw, the saw chain guide plate is correspondingly installed on the chain wheel and the reduction box body through the guide plate gland, and the reduction box body is provided with the inner fixing sleeve fixed with the reduction box cover and the outer fixing sleeve fixed with the handle and the shell of the brushless motor, the assembly is simple and convenient, the connection and fixation are firm and reliable, the manufacturing cost is low, and the service life is long.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic view of the fitting structure of the present invention.

Wherein 1 lithium cell package, 2 lithium cell package connecting seats, 3 handles, 4 brushless motor, 5 reduction gears, 6 protection casings, 7 saw chain guide boards, 8 baffle gland, 9 starting switch, 10 reduction box lid, 11 motor gear, 12 planetary gear, 13 outer ring gears, 14 planetary gear support, 15 output shafts, 16 reduction box, 17 sprocket, 18 set screw, 19 first bearing, 20 sealing members, 21 rubber seal, 22 outer fixed cover, 23 inner fixed cover, 24 second bearings.

Detailed Description

Fig. 1 and 2 show a specific embodiment of the rechargeable mini chain saw of the present invention, which includes a lithium battery pack 1, a handle 3, a brushless motor 4, a reduction mechanism 5, a sprocket 17, a saw chain guide 7, a guide cover 8, and a controller for controlling the operation of the brushless motor 4, wherein the reduction mechanism 5 includes a reduction box 16, a reduction box cover 10, an output shaft 15, a planetary gear carrier 14, a planetary gear 12, an outer gear ring 13, and a motor gear 11, the planetary gear carrier 14 is fixed on the output shaft 15 and rotatably mounted on the reduction box 16 together with the output shaft 15, the outer gear ring 13 is fixed on the reduction box 16 along the same axis with the output shaft 15, the planetary gear 12 is correspondingly fixed on the gear shaft of the planetary gear carrier 14 and engaged with the outer gear ring 13, the motor gear 11 is fixed on the motor output shaft of the brushless motor 4 and engaged with the planetary gear 12, the chain wheel 17 is fixed on the output shaft 15 through a fixing screw 18, the saw chain guide plate 7 is correspondingly arranged on the chain wheel 17 and the reduction box body 16 through the guide plate gland 8, and the output can be greatly improved through the planetary reduction mechanism. In order to facilitate charging, the lithium battery pack 1 is detachably arranged on the lithium battery pack connecting seat 2 at the end part of the handle 3; in order to facilitate the operation, the handle 3 is provided with a starting switch 9; in order to ensure the use safety, the reduction box body 16 is provided with a protective cover 6.

In order to ensure simple assembly and reliable connection, the reduction box body 16 is provided with an inner fixing sleeve 23 and an outer fixing sleeve 22, the reduction box cover 10 is fixed on the inner fixing sleeve 23, and the outer fixing sleeve 22 is respectively fixedly connected with the handle 3 and the shell of the brushless motor 4.

In order to ensure flexible and stable rotation, the reduction box body 16 is provided with a first bearing 19 and a second bearing 24 side by side, the output shaft 15 is rotatably arranged on the first bearing 19, the planetary gear support 14 is rotatably arranged on the second bearing 24, and the reduction box body 16 is provided with a clamp spring for preventing the first bearing 19 from axially moving.

In order to ensure the sealing, a sealing element 20 which is in sealing fit with the output shaft of the motor and a rubber sealing ring 21 which is in sealing fit with the front cover of the motor are arranged on the reduction box cover 10.

The above description is only the specific embodiment of the present invention, and is not intended to limit the present invention in any form, and the present invention does not depart from the technical solution of the present invention, and the made simple modification, equivalent change or modification all fall into the protection scope of the present invention.

Claims

1. The utility model provides a rechargeable mini electric chain saw, includes lithium cell package (1), handle (3), brushless motor (4), reduction gears (5), sprocket (17), saw chain baffle (7), baffle gland (8), characterized by: the speed reducing mechanism (5) comprises a speed reducing box body (16), a speed reducing box cover (10), an output shaft (15), a planetary gear bracket (14), a planetary gear (12), an outer gear ring (13) and a motor gear (11), the planetary gear support (14) is fixed on the output shaft (15) and is rotatably installed on the reduction box body (16) together with the output shaft (15), the outer gear ring (13) and the output shaft (15) are fixed on the reduction box body (16) in the same axis, the planetary gear (12) is correspondingly fixed on a gear shaft of the planetary gear support (14) and is meshed with the outer gear ring (13), the motor gear (11) is fixed on a motor output shaft of the brushless motor (4) and is meshed with the planetary gear (12), the chain wheel (17) is fixed on the output shaft (15) through a fixing screw (18), and the saw chain guide plate (7) is correspondingly installed on the chain wheel (17) and the reduction box body (16) through a guide cover (8).

2. The rechargeable mini electric chain saw of claim 1, wherein: the speed reducer is characterized in that an inner fixing sleeve (23) and an outer fixing sleeve (22) are arranged on the speed reducer box body (16), the speed reducer box cover (10) is fixed on the inner fixing sleeve (23), and the outer fixing sleeve (22) is fixedly connected with the handle (3) and the shell of the brushless motor (4) respectively.

3. The rechargeable mini electric chain saw according to claim 1 or 2, wherein: the speed reducing box body (16) on install first bearing (19) and second bearing (24) side by side, output shaft (15) rotationally install on first bearing (19), planet gear support (14) rotationally install on second bearing (24), be equipped with the jump ring that prevents first bearing (19) axial displacement on the speed reducing box body (16).

4. The rechargeable mini electric chain saw of claim 3, wherein: and a sealing element (20) in sealing fit with the output shaft of the motor and a rubber sealing ring (21) in sealing fit with the front cover of the motor are arranged on the reduction box cover (10).

5. The rechargeable mini electric chain saw of claim 4, wherein: lithium cell package (1) detachably install on lithium cell package connecting seat (2) of handle (3) tip, install on handle (3) and start switch (9), be equipped with protection casing (6) on reduction box (16).