CN205870911U - Hand - held cutting tool - Google Patents
Hand - held cutting tool Download PDFInfo
- Publication number
- CN205870911U CN205870911U CN201620714259.7U CN201620714259U CN205870911U CN 205870911 U CN205870911 U CN 205870911U CN 201620714259 U CN201620714259 U CN 201620714259U CN 205870911 U CN205870911 U CN 205870911U
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- output shaft
- bearing
- hand
- cutting tool
- bearing block
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Abstract
The utility model discloses a hand - held cutting tool, including output shaft, bearing frame and fore bearing, the interior snare of fore bearing is on the output shaft, and the outer lane of fore bearing is fixed in the bearing frame, the front end projecting shaft bearing of output shaft, and the front end of output shaft is equipped with cutting assembly, is equipped with dustproof gasket on the output shaft between bearing frame and the cutting assembly, and dustproof gasket rotates along with the output shaft, forms labyrinth seals between dustproof gasket and the preceding terminal surface of bearing frame. The utility model has the advantages that: the rotatory centrifugal force effect that forms of dustproof gasket, dust and water are got rid of from dustproof gasket, thereby form the dustproof protective screen of first way, simultaneously owing to mutually supporting in prevent dust gasket internal surface and bearing frame surface, form the maze, extension dust or water contact arrive preceding bearing surface's route, form the dustproof protective screen of second way, form the protection to hand - held cutting tool's bearing and the inside lubricating system of box through above -mentioned 2 dustproof protective screens, thereby reach protection hand - held cutting tool, extension hand - held cutting tool life's effect.
Description
Technical field
This utility model relates to a kind of hand-held cutting tool.
Background technology
Hand-held cutting tool such as makita 4100NH, can produce a large amount of dust, and need to enter saw blade because being actually needed during work
Capable operation of watering.The most existing hand-held cutting tool dustproof construction is difficult to effectively prevent in work in actual use
Dust and water enter into box house, the bearing in casing and lubricating system are damaged.
Utility model content
The purpose of this utility model is to provide a kind of hand-held cutting tool, it is possible to effectively solve existing hand-held cutting tool
Dust and the water capacity easily enter in casing between bearing block and output shaft, the problem damaging bearing and lubricating system.
In order to solve above-mentioned technical problem, this utility model is achieved through the following technical solutions: a kind of hand-held cutting
Instrument, including output shaft, bearing block and fore bearing, the inner ring of described fore bearing is enclosed within output shaft, and the outer ring of fore bearing is fixed
In bearing block, the front end projecting shaft bearing of output shaft, the front end of output shaft is provided with cutting assembly, bearing block and cutting assembly it
Between output shaft be provided with dustproof gasket, dustproof gasket with output shaft rotation, between dustproof gasket and bearing block front end face formed
Labyrinth seal.
Preferably, described dustproof gasket is annular, and the endoporus of dustproof gasket is provided with the inner protruding eave of fore bearing, inner protruding eave
It is close to output shaft；Make dustproof gasket closely cooperate with output shaft by inner protruding eave, drive dustproof gasket synchronous axial system, and without making
Use other fixing devices, simplify internal structure.
Preferably, the leading section of described bearing block has the through hole passed for output shaft, the front end face of bearing block have with
The first holding tank that through hole communicates, described inner protruding eave is arranged on the first holding tank；Inner protruding eave stretches into the first holding tank, makes dust-proof cushion
Define labyrinth seal between sheet and bearing block, extend dust or the path of water entrance.
Preferably, the outside eaves of dustproof gasket is provided with evagination eaves, and the front end face of described bearing block has the second holding tank, institute
State evagination eaves to be arranged in the second holding tank；Lengthen the path of labyrinth seal further.
Preferably, the bearing block front end face between the first holding tank and the second holding tank also has at least one sealing
Groove；Also for the path of increase labyrinth seal, strengthen overall tightness.
Preferably, the output shaft between cutting assembly and bearing block being provided with the shaft shoulder, described dustproof gasket is arranged on
Between the shaft shoulder and bearing block, the end face of dustproof gasket withstands on the shaft shoulder；Can effectively fix the position of dustproof gasket, prevent it from going out
Now move axially.
Preferably, it is additionally provided with outside framework oil seal between leading section and the output shaft of described bearing block；Reinforced shaft bearing further
And the sealing effectiveness between output shaft.
Compared with prior art, the utility model has the advantages that: the dust produced when hand-held cutting tool works or water
When touching the outer surface of dustproof gasket, owing to dustproof gasket rotates the centrifugal action formed, dust and water are thrown off dust-proof
Pad, thus form the dust-proof barrier of first, simultaneously because dustproof gasket inner surface and bearing block surface cooperate, form fan
Palace, prolongation dust or water touch the path on fore bearing surface, thus form the dust-proof barrier of second, are prevented by above-mentioned 2
Dirt barrier forms the bearing to hand-held cutting tool and the protection of box house lubricating system, thus reaches to protect hand-held cutting work
Tool, the effect extending hand-held cutting tool service life.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of hand-held cutting tool of this utility model；
Fig. 2 is the structural representation after removing cutting assembly in a kind of hand-held cutting tool of this utility model；
Fig. 3 is the sectional view of this utility model a kind of hand-held cutting tool bottom bracket.
Detailed description of the invention
Refering to the embodiment that Fig. 1, Fig. 2, Fig. 3 are a kind of hand-held cutting tool of this utility model, a kind of hand-held cutting tool,
Including output shaft 1, bearing block 2 and fore bearing 3, the inner ring of described fore bearing 3 is enclosed within output shaft 1, and the outer ring of fore bearing 3 is fixed
In bearing block 2, the front end projecting shaft bearing 2 of output shaft 1, the front end of output shaft 1 is provided with cutting assembly 4, the front end of bearing block 2
It is provided with outside framework oil seal 15 between portion 9 and output shaft 1, has for holding near the side of fore bearing 3 in the leading section 9 of bearing block 2
Receiving the holding tank of outside framework oil seal 15, the output shaft 1 between bearing block 2 and cutting assembly 4 is provided with dustproof gasket 5.
Dustproof gasket 5 is annular, and the endoporus of dustproof gasket 5 is provided with the inner protruding eave 7 of fore bearing 3, and outward flange is provided with
Towards the evagination eaves 11 of fore bearing 3, the leading section 9 of bearing block 2 has the through hole 8 passed for output shaft 1, the front end of bearing block 2
Face has and communicates the first holding tank 10 with through hole 8, and the front end face of bearing block 2 also has the second holding tank 12, at the first holding tank
Also have a seal groove 13 on 10 and second bearing block 2 front end faces between holding tank 12, cutting assembly 4 and bearing block 2 it
Between output shaft 1 be provided with the shaft shoulder 14, the inner protruding eave of dustproof gasket 57 and output shaft 1 interference fit and stretch into the first holding tank 10
In, inner protruding eave 7 and the first holding tank 10 matched in clearance, the end face of dustproof gasket 5 withstands on the shaft shoulder 14, the evagination of dustproof gasket 5
Eaves 11 stretches in the second holding tank 12, and evagination eaves 11 and the second holding tank 12 are also matched in clearance.
During work, gear connects power intake and drives output shaft 1 to rotate, and drives cutting assembly 4 to transport by output shaft 1
Turning, dustproof gasket 5 and output shaft 1 synchronous axial system during normal work, the dust or the water that produce when hand-held cutting tool works touch
When contacting the outer surface of dustproof gasket 5, owing to dustproof gasket 5 rotates the centrifugal action formed, dust and water are thrown off dust-proof
Pad 5, thus form the dust-proof barrier of first, simultaneously because dustproof gasket 5 inner surface and bearing block 2 surface cooperate, shape
Labyrinth, prolongation dust or water is become to touch the path on fore bearing 3 surface, thus form the dust-proof barrier of second, by above-mentioned
2 dust-proof barriers form the bearing to hand-held cutting tool and the protection of box house lubricating system, thus reach to protect hand-held
Cutting tool, the effect extending hand-held cutting tool service life.
The foregoing is only specific embodiment of the utility model, but technical characteristic of the present utility model is not limited to
This, any those skilled in the art is in field of the present utility model, and change or the modification made all are contained in this practicality new
Among the scope of the claims of type.
Claims (7)
1. a hand-held cutting tool, including output shaft (1), bearing block (2) and fore bearing (3), the inner ring of described fore bearing (3)
Being enclosed within output shaft (1), the outer ring of fore bearing (3) is fixed in bearing block (2), the front end projecting shaft bearing of output shaft (1)
(2), the front end of output shaft (1) is provided with cutting assembly (4), it is characterised in that: defeated between bearing block (2) and cutting assembly (4)
Shaft (1) is provided with dustproof gasket (5), and dustproof gasket (5) rotates with output shaft (1), and dustproof gasket (5) is front with bearing block (2)
Labyrinth seal is formed between end face.
2. a kind of hand-held cutting tool as claimed in claim 1, it is characterised in that: described dustproof gasket (5) is annular, dust-proof
The endoporus of pad (5) is provided with the inner protruding eave (7) of fore bearing (3), and inner protruding eave (7) is close to output shaft (1).
3. a kind of hand-held cutting tool as claimed in claim 2, it is characterised in that: the leading section (9) of described bearing block (2) is opened
Having the through hole (8) passed for output shaft (1), the front end face of bearing block (2) has the first holding tank communicated with through hole (8)
(10), described inner protruding eave (7) is arranged on the first holding tank (10).
4. a kind of hand-held cutting tool as claimed in claim 3, it is characterised in that: outside the outside eaves of dustproof gasket (5) is provided with
Convex eaves (11), the front end face of described bearing block (2) has the second holding tank (12), and described evagination eaves (11) is arranged on the second receiving
In groove (12).
5. a kind of hand-held cutting tool as claimed in claim 4, it is characterised in that: accommodate with second at the first holding tank (10)
At least one seal groove (13) is also had on bearing block (2) front end face between groove (12).
6. a kind of hand-held cutting tool as claimed in claim 1, it is characterised in that: it is positioned at cutting assembly (4) and bearing block (2)
Between output shaft (1) be provided with the shaft shoulder (14), described dustproof gasket (5) is arranged between the shaft shoulder (14) and bearing block (2), anti-
The end face of dirt pad (5) withstands on the shaft shoulder (14).
7. hand-held cutting tool as claimed in claim 1 a kind of, it is characterised in that: the leading section (9) of described bearing block (2) with
Outside framework oil seal (15) it is additionally provided with between output shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620714259.7U CN205870911U (en) | 2016-07-05 | 2016-07-05 | Hand - held cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620714259.7U CN205870911U (en) | 2016-07-05 | 2016-07-05 | Hand - held cutting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205870911U true CN205870911U (en) | 2017-01-11 |
Family
ID=57696063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620714259.7U Active CN205870911U (en) | 2016-07-05 | 2016-07-05 | Hand - held cutting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205870911U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109049377A (en) * | 2018-09-28 | 2018-12-21 | 陕西雨润石化设备有限公司 | A kind of multiple trunking guide roller mechanism for Buddha's warrior attendant wire cutting machine tool |
-
2016
- 2016-07-05 CN CN201620714259.7U patent/CN205870911U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109049377A (en) * | 2018-09-28 | 2018-12-21 | 陕西雨润石化设备有限公司 | A kind of multiple trunking guide roller mechanism for Buddha's warrior attendant wire cutting machine tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Crown Electric Tools Manufacture Co.,Ltd. Assignor: ZHEJIANG HENGTAI CROWN GARDEN TOOLS CO.,LTD. Contract record no.: X2023980040601 Denomination of utility model: A handheld cutting tool Granted publication date: 20170111 License type: Common License Record date: 20230828 |
|
| EE01 | Entry into force of recordation of patent licensing contract |