CN207983725U - A kind of makita 4100NH - Google Patents
A kind of makita 4100NH Download PDFInfo
- Publication number
- CN207983725U CN207983725U CN201820323722.4U CN201820323722U CN207983725U CN 207983725 U CN207983725 U CN 207983725U CN 201820323722 U CN201820323722 U CN 201820323722U CN 207983725 U CN207983725 U CN 207983725U
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- China
- Prior art keywords
- ring
- makita
- output shaft
- shaped step
- casing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a kind of makita 4100NHs, including casing, by motor-driven main output shaft, output bearing is fixed in the casing, the main output shaft is arranged on the output bearing, the main output shaft front end is stretched out outside the casing, cutting sheet is fixed on the main output shaft front end by clip plate and outer plate, it is characterized in that, front end face of the casing towards clip plate is radially provided with first annular step and the second ring-shaped step, the inner wall of the first annular step and the clip plate outer wall clearance fit, the side setting of the clip plate towards second ring-shaped step is fluted, second ring-shaped step gos deep into the groove of the clip plate, the first annular step, the groove of second ring-shaped step and the clip plate forms labyrinth structure.
Description
Technical field
The utility model belongs to field of power tools, is related to a kind of makita 4100NH.
Background technology
Makita 4100NH use condition is more severe, full of dust, water mist in environment in the makita 4100NH course of work
Deng.Traditional makita 4100NH without dustproof and waterproof structure, uses for a long time under this complex working condition substantially, dust, water mist and oil
The pollutants such as dirt are easily accessible the casing internal of makita 4100NH, accumulate in its rotor and bearing portion, motor is caused to be sent out
Heat, performance decline, or even cause short circuit, to influence the whole service life and customer experience of makita 4100NH.Currently, not having also
There is preferable method to prevent the pollutants such as dust, water mist and greasy dirt from entering the casing internal of makita 4100NH；
Therefore, how to prevent the pollutants such as dust, water mist and greasy dirt from entering in casing from main output shaft and casing engaging portion
Portion, especially bearing portion promote the service life of makita 4100NH, are a problem to be solved.
Utility model content
In view of this, the utility model embodiment is intended to provide a kind of makita 4100NH, dust, water mist and oil can be prevented
The pollutants such as dirt enter casing internal, especially bearing portion from main output shaft and casing engaging portion, promote makita 4100NH
Service life.
In order to achieve the above objectives, the technical solution of the utility model is realized in：
The utility model provides a kind of makita 4100NH, including casing, by motor-driven main output shaft, the casing
It is inside fixed with output bearing, the main output shaft is arranged on the output bearing, and the machine is stretched out in the main output shaft front end
Outside shell, cutting sheet is fixed on the main output shaft front end, front end of the casing towards clip plate by clip plate and outer plate
Face diameter is to being provided with first annular step and the second ring-shaped step, the inner wall of the first annular step and the clip plate outer wall
The side setting of clearance fit, the clip plate towards second ring-shaped step is fluted, and second ring-shaped step gos deep into
In the groove of the clip plate, the first annular step, the second ring-shaped step and the clip plate the groove type
At labyrinth structure.
In said program, the casing is provided with third ring-shaped step in the engaging portion with the main output shaft, described
Third ring-shaped step is provided with dust seal towards the side inside the makita 4100NH.
In said program, the side outside the makita 4100NH is provided with baffle ring in the third ring-shaped step.
In said program, the dust seal is oil sealing.
In said program, the baffle ring is bonded with the clip plate.
In said program, the baffle ring is O-ring.
In said program, the first annular step is more than second annular table in the height of main output shaft axial direction
The height of rank.
The utility model provides a kind of makita 4100NH, including casing, by motor-driven main output shaft, the casing
It is inside fixed with output bearing, the main output shaft is arranged on the output bearing, and the machine is stretched out in the main output shaft front end
Outside shell, cutting sheet is fixed on the main output shaft front end, front end of the casing towards clip plate by clip plate and outer plate
Face diameter is to being provided with first annular step and the second ring-shaped step, the inner wall of the first annular step and the clip plate outer wall
The side setting of clearance fit, the clip plate towards second ring-shaped step is fluted, and second ring-shaped step gos deep into
In the groove of the clip plate, the first annular step, the second ring-shaped step and the clip plate the groove type
At labyrinth structure.In this way, the labyrinth structure of main output shaft front considerably reduces the pollutants such as various dust, water mist and greasy dirt
The casing internal for invading makita 4100NH, largely improves bearing life, extends the service life of complete machine, substantially reduce
The use of client and maintenance cost.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and being implemented in accordance with the contents of the specification, and in order to allow the above and other purpose, feature of the utility model
It can be clearer and more comprehensible with advantage, it is special below to lift preferred embodiment, and coordinate attached drawing, detailed description are as follows.
Description of the drawings
Fig. 1 is the utility model embodiment makita 4100NH structural schematic diagram；
Fig. 2 is the portions the utility model embodiment makita 4100NH A structural schematic diagram；
Fig. 3 is the portions the utility model embodiment makita 4100NH B dustproof and waterproof structural schematic diagram.
Specific implementation mode
Further to illustrate that the utility model is to reach the technological means and effect that predetermined purpose of utility model is taken,
Below in conjunction with attached drawing and preferred embodiment, to according to the utility model proposes makita 4100NH its specific implementation mode, structure,
Feature and its effect are described in detail as after.
A kind of makita 4100NH 100 of the utility model preferred embodiment, as depicted in figs. 1 and 2, wherein Fig. 1 is stone material
The phantom of cutting machine, Fig. 2 are the enlarged partial sectional view of range shown in arrow A in Fig. 1, and the makita 4100NH includes
Casing 110 is fixed with output bearing 140 by the main output shaft 130 of motor driving (not shown in the diagram) in casing 110, master is defeated
Shaft 130 is arranged on the output bearing 140, and 130 front end of the main output shaft is stretched out outside the casing 110, cutting sheet 170
It is fixed on 130 front end of the main output shaft by clip plate 120 and outer plate 180；Fig. 3 is the office of range shown in arrow B in Fig. 2
Portion's enlarged cross-sectional view, as shown in figure 3, front end face of the casing 110 towards clip plate 120 is radially provided with first annular step
111 and second ring-shaped step 112, the first annular step 111 and the second ring-shaped step 112 can be with the main output shaft
130 axle center are the concentric ring in the center of circle.The inner wall of the first annular step 111 and 120 outer wall clearance fit of the clip plate, institute
The gap of the inner wall and 120 outer wall of the clip plate of stating first annular step 111 does not influence the rotation of the clip plate.In described
The side of pressing plate 120 towards second ring-shaped step 112 is provided with corresponding groove 121, and second ring-shaped step 112 is deep
Enter in the groove 121 of the clip plate 120, the first annular step 111, the second ring-shaped step 112 and the internal pressure
The groove 121 of plate 120 forms labyrinth structure.
In the present embodiment, as shown in figure 3, being provided in the engaging portion with the main output shaft 130 in the casing 110
Third ring-shaped step 113 is provided in the third ring-shaped step 113 towards the side inside the makita 4100NH 100 anti-
It is covered with dust 150.
In the present embodiment, the side outside the makita 4100NH is provided with baffle ring in the third ring-shaped step
160。
In the present embodiment, the baffle ring 160 is bonded with the clip plate 120.
In the present embodiment, the baffle ring 160 is O-ring.The initial period meeting that the O-ring is used in makita 4100NH
There is a slight abrasion, after a small amount of axial gap to be generated, due to being provided with the position-limiting action of the components such as axle sleeve on main output shaft,
The O-ring will no longer be worn.Further, from figure 3, it can be seen that the mild wear of the O-ring does not change this portion
The sealing effect divided.
In the present embodiment, the dust seal 150 is oil sealing.
In the present embodiment, the first annular step 111 is more than described the in the axial height of the main output shaft 130
The height of second ring step 112.
It is dirty that the makita 4100NH 100 of the utility model of the present embodiment considerably reduces various dust, water mist and greasy dirt etc.
The intrusion for contaminating object improves the service life of complete machine, substantially reduces to largely improve the service life of output bearing 140
The use of client and maintenance cost.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation be not limited to the utility model although the utility model has been disclosed with preferred embodiment as above, it is any ripe
Professional and technical personnel is known, is not being departed within the scope of technical solutions of the utility model, when in the technology using the disclosure above
Hold the equivalent embodiment made a little change or be modified to equivalent variations, as long as being without departing from technical solutions of the utility model
Hold, any simple modification, equivalent change and modification made by the above technical examples according to the technical essence of the present invention, still
It is within the scope of the technical solutions of the present invention.
Claims (7)
1. a kind of makita 4100NH, including casing are fixed with output bearing by motor-driven main output shaft in the casing,
The main output shaft is arranged on the output bearing, and the main output shaft front end is stretched out outside the casing, and cutting sheet passes through interior
Pressing plate and outer plate are fixed on the main output shaft front end, which is characterized in that front end face of the casing towards clip plate is radial
It is provided with first annular step and the second ring-shaped step, the inner wall of the first annular step is matched with clip plate outer wall gap
It closes, the side setting of the clip plate towards second ring-shaped step is fluted, and second ring-shaped step gos deep into described
In the groove of pressing plate, the groove of the first annular step, the second ring-shaped step and the clip plate forms labyrinth
Structure.
2. makita 4100NH according to claim 1, which is characterized in that the casing and the main output shaft combination
Portion is provided with third ring-shaped step, is provided with towards the side inside the makita 4100NH in the third ring-shaped step dust-proof
Envelope.
3. makita 4100NH according to claim 2, which is characterized in that in the third ring-shaped step towards the stone material
Side outside cutting machine is provided with baffle ring.
4. makita 4100NH according to claim 2, which is characterized in that the dust seal is oil sealing.
5. makita 4100NH according to claim 3, which is characterized in that the baffle ring is bonded with the clip plate.
6. makita 4100NH according to claim 3, which is characterized in that the baffle ring is O-ring.
7. makita 4100NH according to any one of claims 1 to 6, which is characterized in that the first annular step is in institute
The height for stating main output shaft axial direction is more than the height of second ring-shaped step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820323722.4U CN207983725U (en) | 2018-03-09 | 2018-03-09 | A kind of makita 4100NH |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820323722.4U CN207983725U (en) | 2018-03-09 | 2018-03-09 | A kind of makita 4100NH |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207983725U true CN207983725U (en) | 2018-10-19 |
Family
ID=63826732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820323722.4U Active CN207983725U (en) | 2018-03-09 | 2018-03-09 | A kind of makita 4100NH |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207983725U (en) |
-
2018
- 2018-03-09 CN CN201820323722.4U patent/CN207983725U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 226100 No. 699, Xiangjiang Road, Haimen Economic and Technological Development Zone, Nantong City, Jiangsu Province Patentee after: Jiangsu Dayi Technology Co.,Ltd. Address before: 22699, Haimen Economic and Technological Development Zone, Donghai City, Jiangsu Province Patentee before: JIANGSU DAYI M&E TOOLS Co.,Ltd. |