CN106514496A - Grinder - Google Patents
Grinder Download PDFInfo
- Publication number
- CN106514496A CN106514496A CN201610581604.9A CN201610581604A CN106514496A CN 106514496 A CN106514496 A CN 106514496A CN 201610581604 A CN201610581604 A CN 201610581604A CN 106514496 A CN106514496 A CN 106514496A
- Authority
- CN
- China
- Prior art keywords
- wheel cover
- housing
- main shaft
- installation portion
- installation position
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/04—Protective covers for the grinding wheel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/04—Protective covers for the grinding wheel
- B24B55/05—Protective covers for the grinding wheel specially designed for portable grinding machines
- B24B55/052—Protective covers for the grinding wheel specially designed for portable grinding machines with rotating tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
- B24B23/028—Angle tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
Abstract
A grinder includes a motor, a housing (40) that houses the motor, a spindle (24) that projects from the housing and is driven by the motor, and thereby rotates relative to the housing, and a wheel cover that is disposed on an outer-circumference side of the spindle and is configured to cover a portion of a tool accessory attached to the spindle. The grinder also includes a holding device (56) for holding the wheel cover on the housing such that the arrangement and position of the wheel cover around the spindle can be changed but such that the wheel cover is not readily removable from the housing.
Description
Technical field
The present invention relates to a kind of grinder processing such as carry out being ground, grind, cut to machined material.
Background technology
Grinder possesses the main shaft (spindle) rotated by Motor drive.Main shaft is projected from the housing equipped with motor is received,
Its top is provided with discoideus tip end tool.Its result is can to rotate tip end tool by the rotation of main shaft, to being added
Work material is processed.
In addition, the outer circumferential side in the main shaft for installing tip end tool is provided with the wheel cover for the part for covering tip end tool
(wheel cover) is (for example, with reference to patent documentation 1,2).
Prior art literature
Patent documentation
Patent documentation 1：Japanese invention Patent Publication No 2013-78823
Patent documentation 2：Japanese invention Patent Publication No 2013-226617
Wheel cover is arranged on around the protuberance that main shaft is projected on housing, and which being capable of disassembled and assembled freely.Therefore, there is user to incite somebody to action
Wheel cover is unloaded from housing, in the state of whole tip end tool is exposed, is processed operation to machined material.
The content of the invention
Therefore, the purpose of a technical scheme of the invention is to provide a kind of grinder, and which can suppress user to tear open
Lower wheel cover is come situation about using.
The grinder of one technical scheme of the present invention possesses：Motor；Housing, which receives dress motor；And main shaft, which is from housing
Stretch out, and rotated by the Motor drive in housing.
Further, the outer circumferential side in the main shaft stretched out from housing is configured with for covering the tip end tool for being installed on main shaft one
Partial wheel cover.Wheel cover is held in housing by the holding member constituted with wheel cover split, and can change which in main shaft
The allocation position of surrounding.
Therefore, according to the grinder, when wheel cover is pulled down from grinder, need to tear holding member from wheel cover or housing open
Under, and make the dismounting operation numerous and diverse.Therefore, the present invention can suppress user that wheel cover is pulled down the situation generation for using.
Even if in addition, wheel cover is fixed on housing by holding member, it is also possible to change which in the axial configuration of master, because
This, can suitably adjust the position using wheel cover during grinder such that it is able to suppress the usability of grinder to be deteriorated.
Here, on housing, the installation position for installing wheel cover is the cylindrical shape for surrounding main shaft, and wheel cover possesses and can be embedded in outward
The installation portion of the annular shape of the installation position of housing.
, now, further the installation portion in the annular shape of wheel cover arranges the slit of the peripheral direction along the installation position of housing,
Holding member can be made up of the rivet or screw that insert in the slit.
So, by rivet or screw are inserted in slit, its one end is fixed on into the installation position of housing, the other end is made
The head of side is bigger than the width of slit such that it is able to wheel cover is firmly held on housing by holding member.
In addition, now, if constituting holding member by rivet, must be removed using instrument when wheel cover is pulled down from housing
Remove the head of rivet so as to which dismounting is extremely bothered, therefore the present invention can give full play to the effect for suppressing dismounting wheel cover.
On the other hand, when by screw to constitute holding member, if its head is shape corresponding with general instrument
(for example, cross (+) shape, word (-) shape etc.), then can easily remove screw, accordingly it is also possible to pass through to destroy screw
Head or screw is rotated using bonding agent etc..
In addition, now, when the head of screw be can only by not being commercially available special tool(s) chimeric shape when, except can
Play outside the effect for suppressing to dismantle wheel cover, the situation for also being formed using special tool(s) to remove screw, therefore, in such manner, it is possible to
Do not damage grinder or part around which in the case of simply carry out the replacing of wheel cover.
Secondly, holding member can be scattered in many places of the periphery of the installation position of housing and be fixed.Now, using guarantor
Part is held, wheel cover housing can be held in in many places, thus, it is possible to suppress the central shaft of wheel cover relative to the installation portion of housing
The inclined of position.Therefore, it is possible to make wheel cover rotate around main shaft, and improve the operability when wheel cover position is adjusted.
In addition, on wheel cover, circular installation portion can be provided with for the installation portion is fixedly secured to housing
The secure component of the periphery of installation position.Now, wheel cover positioning can be fixed on housing by secure component, therefore when use
Can suppress wheel cover that position skew occurs relative to tip end tool during grinder, and cause the situation of usability reduction.
On the other hand, the grinder of another technical scheme of the invention is identical with above-mentioned grinder, possesses：Motor；Housing,
Which receives dress motor；And main shaft, which is stretched out from housing, and is rotated by Motor drive in housing.
Further, the outer circumferential side in the main shaft projected from housing is configured with for covering the tip end tool for being installed on main shaft one
Partial wheel cover, wheel cover are maintained on housing, and which cannot dismount.
Therefore, according to the grinder, it is impossible to which wheel cover is pulled down from grinder, make thus, it is possible to suppress user to pull down wheel cover
With the situation of grinder.
Here, on housing, when the cylindrical shape that the installation position for installing wheel cover is encirclement main shaft, being provided with wheel cover can be outward
During the installation portion of the annular shape for being embedded in the installation position of housing, these each portions are constituted as described below.
That is, the side in the inner circumferential of the installation portion of the periphery and wheel cover of the installation position of housing possesses along the circumferential direction shape
Into groove, possess in the opposing party and insert the groove and the projection that can slide in groove or ridge.
So, the installation position of housing and the installation portion of wheel cover are connected by groove and projection or ridge, therefore, wheel cover phase
For housing along the circumferential direction can swing, and cannot move along central axis direction.
Therefore, wheel is covered on and is held by a case, and in the state of cannot dismounting, can adjust which in the axial configuration of master
Position.
Next, the inner circumferential of the installation portion of the periphery of the installation position of housing and wheel cover can be formed as can be in the anglec of rotation of regulation
Degree position engages and the wheel cover is positioned at the concaveconvex shape of the housing.
Now, wheel cover can be positioned at the axial arbitrary position of master, thus, it is possible to the position for easily carrying out wheel cover
Put adjustment and position is fixed.
In addition, on wheel cover, the opening of annulus can be connected by installation portion each other by fixed component, thus be configured to annulus
Shape.By releasing by the connection of fixed component, wheel cover can be pulled down from housing.For example, therefore, in the repair shop of grinder
Deng wheel cover can be changed when safeguarding.
Now, in addition, as fixed component, for example, above-mentioned rivet can be utilized.That is, rivet cannot be simple using instrument
Ground dismounting, therefore, it is possible to wheel cover is maintained on housing, and makes which dismount.
Description of the drawings
Fig. 1 is the sectional view of the structure of the grinder for representing the 1st embodiment.
Fig. 2 is the sectional view of the state for representing the installation portion for being installed on housing along slit cutting wheel cover.
Fig. 3 is to represent the sectional view for making the postrotational state of wheel cover in fig. 2.
Fig. 4 is the axonometric chart of the outward appearance for representing the wheel cover on grinder.
Fig. 5 is to represent the axonometric chart for making the postrotational state of wheel cover in the diagram.
Fig. 6 is the integrally-built axonometric chart of grinder for representing the 2nd embodiment.
Fig. 7 is to represent the sectional view along the central shaft cutting wheel cover of main shaft and the state of grinder.
Fig. 8 is the integrally-built axonometric chart of grinder for representing the 3rd embodiment.
Fig. 9 is the axonometric chart for representing wheel cover structure.
Figure 10 is represented from wheel cover side come the top view of the state for observing the grinder for being provided with wheel cover.
Figure 11 is the sectional view along the line A-A cutting shown in Figure 10.
Specific embodiment
Hereinafter, with reference to the accompanying drawings of embodiments of the present invention.
[the 1st embodiment]
As shown in figure 1, the grinder 2 of present embodiment is mainly made up of electric machine casing 4, gear-box 6, bonnet 8 and wheel cover 10.
Electric machine casing 4 is substantially cylindric housing, is received equipped with motor 12.The rotary shaft 14 of motor 12 is configured to direction
Gear-box 6 stretches out.
Bonnet 8 is arranged at electric machine casing 4 in a side of central axis direction, receives equipped with power supply wiring portion 16.Match somebody with somebody in power supply
It is provided with line portion 16：Power line 18, which is used for from outside power supply supply electric current；Switch 19, which is used for switching grinder 2
The ON (unlatching) of driving/OFF (closing).The power supply wiring portion 16 is electrically connected with motor 12.
Gear-box 6 is arranged on the side contrary with the bonnet 8 of electric machine casing 4, receives equipped with the 1st bevel gear 20, the 2nd bevel gear
22nd, main shaft 24 and bearing 26,28 etc..
1st bevel gear 20 is fixed in the rotary shaft 14 of motor 12 in gear-box 6.2nd bevel gear 22,24 and of main shaft
Bearing 26,28 is formed as one with inner shell 30, and wherein, the inner shell 30 is constituted with 6 split of gear-box, by making inside
Housing 30 is fitted and fixed with gear-box 6, and the 2nd bevel gear 22, main shaft 24 and bearing 26,28 are housed in gear-box 6.
In addition, inner shell 30 is fixed on gear-box 6 by following structure, i.e. by the screw rod 29 for having head (with reference to Fig. 4,
Fig. 5) the spiral shell arranged from 4 that 30 side of inner shell is placed through around the main shaft 24 in above-mentioned each portion and with 2 coaxial direction of main shaft
Pit, is coordinated with the female thread screw thread of the screwed hole for being formed in 6 side of gear-box.
Internally housing 30 is provided with main shaft 24, and the main shaft 24 can be rotated by bearing 26.Inner shell 30 is and master
The cylindrical shape of the central axis of axle 24, main shaft 24 are fixed in gear-box 6 in the way of the rotary shaft 14 with motor 12 is vertical.
2nd bevel gear 22 is fixed on main shaft 24, and which is engaged with the 1st bevel gear 20 in gear-box 6, and by motor 12
Rotary output force be converted to the revolving force for making 24 pivoting of main shaft.
One end of main shaft 24 is bearing on gear-box 6 by bearing 28, and the main shaft 24 can be rotated freely, main shaft 24
The other end is stretched out from inner shell 30 (being gear-box 6 in other words) to outside.
It is fixed for carrying out to discoideus tip end tool (not shown) to be provided with from the extension of gear-box 6 in main shaft 24
The fixed inner flange 32 in position.In addition, main shaft 24, than inner flange 32 closer to the outer peripheral portion on top be formed with for lock
The threaded portion 25 that 34 screw thread of tight nut coordinates.Locking nut 34 is for clamping tip end tool at which between inner flange 32.
In the grinder 2 of said structure, when switch 19 is opening, motor 12 rotates, and its rotation output passes through
Gear mechanism (the 1st bevel gear 20, the 1st bevel gear 22) in gear-box 6 is transmitted to main shaft 24.
Therefore, when tip end tool is fixed on main shaft by locking nut 34, make tip end tool rotation and can carry out
The operations such as grinding, grinding and cutting.In addition, the tip end tool 36 used in above-mentioned grinder 2 for example can for abrasive grinding wheel,
Abrasive cut-off wheel and wire brush etc..
In addition, the rotary shaft in motor 12 is provided with fan 15, and extraneous air is led by the fan 15 from the inlet hole of bonnet 8
Enter, and air is discharged from the tap 7 for being arranged at gear-box 6.By the rotation of the fan 15, extraneous air passes through motor 12
Around, thus motor 12 is cooled.
Wheel cover 10 such as is used for protecting a user from carrying out being ground, grinds, cuts at the machined material produced during operation
Or the injury for bringing of dispersing of the fragment of tip end tool.Therefore, wheel cover 10 is shaped generally as semicircle, covers from 6 side of gear-box
Lid is fixed on a part (specifically, substantially half) for the tip end tool on main shaft 24.
The wheel cover 10 is fixed on the part that main shaft 24 is stretched out from inner shell 30.Hereinafter, describe the fixed structure in detail.
As shown in Figure 2 and Figure 3, internally in housing 30, the installation position 40 for installing wheel cover 10 is formed as surrounding main shaft 24
Cylindrical shape, and the central axis of the installation position 40 and main shaft 24.
In addition, as shown in Fig. 1～Fig. 5, in wheel cover 10, in the tip end tool in opposite directions semicircular plate face of configuration
Center portion point is vertically arranged with semicircular wall portion 50, and the wall portion 50 is abutted with the periphery of the installation position 40 of inner shell 30, and
And can swing around main shaft 24.
Further, the installation portion 52 of annular shape is connected with the wall portion 50, and the installation portion 52 surrounds the peace of inner shell 30
The periphery overall region at dress position 40.
Wheel cover 10 is made up of the metallic plate with ferrum as main component, and wall portion 50 is formed as one by extrusion molding etc. with wheel cover 10
Body.In addition, installation portion 52 is made up of the metallic plate of the strip with ferrum as main component, and be formed as round by extrusion molding etc.
Ring-type.Further, the opening of the annulus of installation portion 52 to the outer lateral bend of annulus with can be diametrically tight by secure component 58
(Gu with reference to Fig. 2, Fig. 3, Fig. 5).In addition, in the present embodiment, secure component 58 is by the screw rod 58A and nut 58B structures for having head
Into.
Installation portion 52 is carried out welding etc. by the wall portion 50 around wheel cover 10 and is connected with wheel cover 10.Further, in installation portion
52 and connection installation portion wheel cover 10 wall portion 50 on, be formed with from the outside of annulus along the circumferencial direction of the annulus of installation portion 52
Slit 54A, the 54B for the strip run through to inner side.
As shown in arrow in Fig. 2, Fig. 3, respectively the annulus from installation portion 52 opening side reach across
Central shaft, side contrary with the opening two regions of annulus form the slit 54A, 54B.
In the two slits 54A, 54B, the outside insertion head from installation portion 52 is bigger than the width of slit 54A, 54B
There are screw rod 56A, 56B of head.Further, each screw rod 56A, 56B are fixed on the interior of the installation position 40 that is arranged at inner shell 30
Threaded portion 57A, 57B.
In addition, internally on the installation position 40 of housing 30, internal thread part 57A, 57B of standing screw 56A, 56B are formed
In central shaft, the substantially opposite position across installation position 40.
As a result, as judged by Fig. 2 and Fig. 3 or Fig. 4 and Fig. 5, wheel cover 10 can formed slit 54A,
Swing around main shaft 24 in the rotation angle range (substantially 180 degree) of 54B.
So, in the grinder 2 of present embodiment, the installation position 40 of the inner shell 30 projected in main shaft 24 is embedding
Conjunction has the installation portion 52 of the annular shape being assembled into one with wheel cover 10.
Further, screw rod 56A, 56B is passed through slit 54A, 54B on the installation portion 52, is fixed on installation position 40
Internal thread part 57A, 57B, accordingly, wheel cover 10 is held in into inner shell 30.
Therefore, the grinder 2 according to present embodiment, when wheel cover 10 is pulled down from grinder 2, needs will be used as guarantor
Screw rod 56A, the 56B for holding part is pulled down from the installation position 40 of inner shell 30, so makes dismounting operation become numerous and diverse.Therefore,
User can be suppressed to pull down situation of the wheel cover 10 using the grinder.
In addition, the installation position 40 of inner shell 30 is formed as the cylindrical shape with the central axis of main shaft 24, therefore, wheel
Although by slit 54A, 54B scope which can rotate in circumferential length limitation, which can rotate cover 10 around main shaft 24.
Therefore, user can arbitrarily set allocation position of the wheel cover 10 around main shaft 24, in other words, can be any
Ground setting is fixed on the cover region of the tip end tool on main shaft 24, not reduce the usability of grinder 2.
In addition, on wheel cover 10, the outer lateral bend of the opening of the annulus of installation portion 52 to annulus, in the part of the bending
By passing through the bolt 58A of composition secure component 58 and coordinating with nut 58B screw threads, the opening of the annulus of installation portion 52 can be made
End is diametrically fastened.
Therefore, user sets wheel cover 10 after the allocation position of main shaft 24, by secure component 58 by wheel cover
10 installation portion 52 is diametrically fastened, hereby it is possible to wheel cover 10 is positioned fixation around main shaft 24.
There is position skew therefore, it is possible to suppress the wheel cover 10 when using grinder 2 relative to tip end tool, and cause to make
The problem reduced with property is produced.
In addition, screw rod 56A, the 56B as holding member is fixed (screw threads for fastening) in the installation position 40 to inner shell 30
Periphery substantially binary two at, be formed with the installation portion 52 of wheel cover 10 for screw rod 56A, 56B are inserted respectively
Two slits 54A, 54B.
Therefore, the grinder 2 according to present embodiment, can by screw rod 56A, 56B with inner shell 30 (and then, it is main
The mode that the central shaft of axle central shaft 24) and wheel cover 10 is substantially uniform is maintained at wheel cover 10 on inner shell 30.
Therefore, when making wheel cover 10 carry out adjustment position around the swing of main shaft 24, the central shaft of wheel cover 10 can be suppressed relative
In the inclined of the installation position of inner shell 30, and the problem for being difficult to position adjustment is produced.
In addition, in the present embodiment, screw rod 56A, 56B of head are used as holding member, therefore, when screw rod 56A,
When the head of 56B is shape corresponding with general instrument, it is easy to pull down wheel cover 10 from grinder.
Can also make screw rod 56A, 56B head be shaped as can only by not being the chimeric shape of commercially available special tool(s), by
Screw rod 56A, 56B simply can not be pulled down by this from inner shell 30.
In addition, the bonding agent that also can be fixed using such as screw, screw rod 56A, 56B are bonded on inner shell 30.
In addition, it is also possible to destroy the head of screw rod 56A, 56B, and screw rod 56A, 56B cannot be torn open from inner shell 30 using instrument
Under.
[the 2nd embodiment]
As shown in Figure 6, Figure 7, the basic structure of the grinder 2 of present embodiment is identical with the 1st embodiment, with the 1st embodiment party
The difference of formula is, as fixed component, to replace spiral shell using rivet 60A, 60B (in figure, only recording the rivet 60A of side)
Bar 56A, 56B.
In addition, in fig. 6 and 7, in addition to rivet 60, its structure is identical with the 1st embodiment, therefore, to real with the 1st
Apply mode identical part and add symbol same as described above, and here omits its description.
As shown in Figure 6, Figure 7, in the grinder 2 of present embodiment, replace screw rod 56A, 56B and rivet 60A, 60B are inserted
It is formed in the wall portion 50 of wheel cover 10 and slit 54A, 54B of installation portion 52.
Also, as shown in fig. 7, internally the formation of installation position 40 hole 61A, 61B of housing 30 (in figure, only records one
The hole 61A of side) and replace internal thread part 57A, 57B, rivet 60A, 60B are tapped into the embedded hole 61A, 61B.Its result is to take turns
Cover 10 is held in inner shell 30 by rivet 60A, 60B, and which can rotate.
Therefore, in the grinder 2 of present embodiment, it is also possible to obtain imitating with the grinder identical of the 1st embodiment
Really.In addition, by rivet 60A, 60B are tapped embedded hole 61A, 61B, compared with screw rod 56A, 56B, energy difficulty is removed, because
This can preferably suppress wheel cover 10 to pull down from grinder 2.
[the 3rd embodiment]
As shown in Fig. 8～Figure 11, the basic structure of the grinder 2 of present embodiment is identical with the 1st, the 2nd embodiment, and above-mentioned
The difference of embodiment is, the wall portion 50 of wheel cover 10, the installation position 40 of inner shell 30 and secure component 62.
In the present embodiment, therefore, in Fig. 8～Figure 11, to it is additional with the respective embodiments described above identical part with
Above-mentioned identical symbol, omits its description, and point different from the embodiment described above is illustrated.
As shown in Fig. 8, Figure 10, the installation position 40 of wheel cover 10 is installed in its outer peripheral face with around interior in internally housing 30
Portion's housing 30 (in other words, main shaft central shaft 24) by each anglec of rotation for specifying formed it is concavo-convex in the way of be formed as waveform.
In addition, as shown in figure 9, in wheel cover 10, the wall portion 50 abutted with the installation position 40 of inner shell 30 also formed with
The corresponding waveform of the outer peripheral face of the installation position 40.
Also, it is in the wall portion 50 of wheel cover 10, identical with above-mentioned embodiment, annular is connected with by welding etc. from outside
Installation portion 52.Therefore, the substantially half of the inner peripheral surface of installation portion 52 is formed as the periphery with the installation position 40 of inner shell 30
The corresponding waveform in face.
Therefore, in the state of inner shell 30 is installed on when swinging around main shaft 24, which is being formed at peace to wheel cover 10
The arbitrary rotary angle position that waveform on the inner peripheral surface of the outer peripheral face and installation portion 52 at dress position 40 coincides with one another is positioned.
In addition, as shown in figure 9, on the inner peripheral surface of the wall portion 50 of wheel cover 10, in the two of the circumferencial direction of semicircular in shape shape
Side has been provided projectingly projection 51 respectively.In addition, Fig. 9 is represented and installation portion 52 is connected to the wheel before wall portion 50 by welding etc.
The state of cover 10.
In contrast, the outer peripheral face of the installation position 40 of the inner shell 30 for abutting in the inner peripheral surface of the wall portion 50 of wheel cover 10
On, as shown in figure 11, all-round groove 42 is substantially traversed in formation.
The groove 42 is used for, when wheel cover 10 is arranged on the installation position 40 of inner shell 30 by installation portion 52, by projection
51 insert the groove 42, when wheel cover 10 is swung around main shaft 24, make projection 51 slide.
Therefore, wheel cover 10 is once internally installed on housing 30, as long as not making the enlarged-diameter of installation portion 52, projection 51
Without departing from groove 42, wheel cover 10 cannot be made to pull down from inner shell 30 in the central axis direction movement of main shaft 24.
Also, in the present embodiment, in order to pull down wheel cover 10 from inner shell 30 (in other words, it is
Cannot dismount), rivet is used as the secure component 62 of the opening of connection installation portion 52.The rivet is through mounting object
Hole, by being pressed from both sides by instrument, accordingly, formation prevents from the both sides in hole the head for coming off.
Therefore, installation portion 52 is fixedly secured to inner shell 30 by the secure component 62 formed by rivet by wheel cover 10
Around installation position 40, accordingly, after fixation, it is impossible to which which is pulled down from grinder 2.
In addition, wheel cover 10 passes through the projection of the wall portion 50 for making to be provided projectingly the part in the internal face for constituting installation portion 52
Slide in 51 grooves 42 on the outer peripheral face of installation position 40 for being formed at inner shell 30, and can rotate around main shaft 24.
Further, its turned position the installation position 40 for being respectively formed in inner shell 30 outer peripheral face and be installation portion 52
The arbitrary position that coincides with one another of waveform of wall portion 50 of inner peripheral surface be positioned.In the present embodiment, therefore, can be easy
Ground is positioned at wheel cover 10 around the position of main shaft 24.
It is more than the explanation carried out by embodiments of the present invention, but the present invention is not limited to above-mentioned embodiment,
In the range of idea of the invention, can adopt in various manners.
For example, in the above-described embodiment, illustrate that wheel cover 10 is set the structure that the inner shell 30 of main shaft 24 keeps, but
The structure that can be kept by the gear-box 6 for receiving dress inner shell 30 for wheel cover 10.
In addition, gear-box 6 can also be configured to, which is formed as one with inner shell 30, main shaft 24, the 1st bevel gear 20,
2nd bevel gear 22, bearing 26,28 etc. are set directly on gear-box 6.
On the other hand, in the 1st, the 2nd embodiment, by the screw rod in slit 54A, 54B and insertion slit 54A, 54B
56A, 56B or rivet 60A, 60B, allow that wheel cover 10 is swung around main shaft 24, while preventing wheel cover 10 from dismantling from grinder 2.Separately
Outward, in the 3rd embodiment, identical effect is obtained by groove 42 and projection 51.
To this, for example, be embedded in outside the installation portion 52 by the annular of wheel cover 10 grinder 2 housing installation position it
Afterwards, even if the enlarged-diameter of the opening of the installation position, it is also possible to obtain identical effect.
In addition, in the 1st, the 2nd embodiment, screw rod 56A, 56B or rivet 60A, 60B as holding member are illustrated
Quantity is two, but its quantity can also be for more than one, or three.In addition, in the 3rd embodiment, insertion groove 42 it is prominent
The quantity for playing 51 can be more than three, it is also possible to replace projection and adopt ridge.
In the respective embodiments described above, in addition, it is that the installation portion 52 to wheel cover 10 is connected as one with the wall portion 50 of wheel cover 10
The explanation that body is carried out, but installation portion 52 can also be formed as one together with wheel cover 10.
Description of reference numerals
2 ... grinders, 4 ... electric machine casings, 6 ... gear-boxes, 7 ... taps, 8 ... bonnets, 10 ... wheel covers, 12 ... motors,
14 ... rotary shafts, 15 ... fans, 16 ... power supply wiring portions, 18 ... power lines, 19 ... switches, 20 ... the 1st bevel gears, 22 ... the 2nd
Bevel gear, 24 ... main shafts, 25 ... screw divisions, 26,28 ... bearings, 30 ... inner shells, 32 ... inner flanges, 34 ... locking nuts,
40 ... installation positions, 42 ... grooves, 50 ... wall portions, 51 ... projections, 52 ... installation portions, 54A, 54B ... slit, the outer spiral shell of 56A, 56B ...
Stricture of vagina, 57A, 57B ... internal thread part, 58,62 ... secure components, 61A ... rivets.
Claims (8)
1. a kind of grinder, it is characterised in that possess：
Motor；
Housing, its receipts fill the motor；
Main shaft, which is stretched out from the housing, is rotated by the Motor drive in the housing；
Wheel cover, which is configured in from the housing outer circumferential side of the main shaft for stretching out, and is installed on the main shaft for covering
A part for tip end tool；
Holding member, which is constituted with the wheel cover split, for the wheel cover is kept on the housing,
The wheel cover is configured to, in the state of the housing is retained in by the holding member, can change its
The axial allocation position of the master.
2. grinder according to claim 1, it is characterised in that
On the housing, the installation position for installing the wheel cover is the cylindrical shape for surrounding the main shaft,
The wheel cover possesses the installation portion of annular shape, and the installation portion can be embedded in outward the installation position of the housing, and
Slit with the peripheral direction along the installation position,
The holding member is made up of rivet or screw, and the rivet or screw insert the described narrow of the installation portion of the wheel cover
Seam, its one end are fixed on the installation position of the housing, and the other end is with the head bigger than the width of the slit.
3. grinder according to claim 2, it is characterised in that
The holding member is scattered in many places of the periphery of the installation position of the housing, and is fixed.
4. the grinder according to Claims 2 or 3, it is characterised in that
On the wheel cover, the circular installation portion is provided with the institute for the installation portion to be fixedly secured to the housing
State the secure component of the periphery of installation position.
5. a kind of grinder, it is characterised in that possess：
Motor；
Housing, its receipts fill the motor；
Main shaft, which is stretched out from the housing, is rotated by the Motor drive in the housing；
Wheel cover, which is configured in from the housing outer circumferential side of the main shaft for stretching out, and is installed on the main shaft for covering
A part for tip end tool,
The wheel cover is configured to, and is kept on the housing, and which cannot dismount.
6. grinder according to claim 5, it is characterised in that
On the housing, the installation position for installing the wheel cover is the cylindrical shape for surrounding the main shaft,
The wheel cover possesses the installation portion of the annular shape of the installation position that can be embedded in outward the housing,
A side in the inner circumferential of the installation portion of the periphery and the wheel cover of the installation position of the housing possesses edge
The groove that circumferencial direction is formed, the projection that possess the insertion groove and can slide in the groove in the opposing party or ridge.
7. grinder according to claim 6, it is characterised in that
The inner circumferential of the installation portion of the periphery of the installation position of the housing and the wheel cover is formed as, can be in regulation
Rotary angle position engaging and the wheel cover is positioned at the concaveconvex shape of the housing.
8. the grinder according to claim 6 or 7, it is characterised in that
On the wheel cover, the installation portion is configured to the annulus by the opening of annulus is connected by fixed component each other
Shape.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015178689A JP6632840B2 (en) | 2015-09-10 | 2015-09-10 | Grinder |
| JP2015-178689 | 2015-09-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106514496A true CN106514496A (en) | 2017-03-22 |
Family
ID=56883728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610581604.9A Pending CN106514496A (en) | 2015-09-10 | 2016-07-21 | Grinder |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20170072533A1 (en) |
| EP (1) | EP3141340B1 (en) |
| JP (1) | JP6632840B2 (en) |
| CN (1) | CN106514496A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107553416A (en) * | 2017-10-25 | 2018-01-09 | 锐奇控股股份有限公司 | Electric tool protective cover adjusting means and electric tool |
| CN109093495A (en) * | 2017-06-20 | 2018-12-28 | 株式会社牧田 | Grinder |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6634248B2 (en) | 2015-09-10 | 2020-01-22 | 株式会社マキタ | Grinders and covers |
| JP6667236B2 (en) | 2015-09-10 | 2020-03-18 | 株式会社マキタ | Grinders, covers and cover sets |
| JP6571463B2 (en) | 2015-09-10 | 2019-09-04 | 株式会社マキタ | Grinder and cover |
| JP6577830B2 (en) | 2015-10-28 | 2019-09-18 | 株式会社マキタ | Electric tool |
| JP1571886S (en) * | 2016-09-20 | 2018-03-05 | ||
| DE102017213747A1 (en) * | 2017-08-08 | 2019-02-14 | Robert Bosch Gmbh | Protective device for a hand tool machine |
| JP2020006483A (en) * | 2018-07-09 | 2020-01-16 | 株式会社マキタ | Electric power tool |
| KR102193670B1 (en) * | 2019-03-21 | 2020-12-21 | 양선경 | Grind safety device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2923177Y (en) * | 2006-06-26 | 2007-07-18 | 苏州宝时得电动工具有限公司 | Corner-grinding protective cover clamp |
| TWM319119U (en) * | 2007-02-02 | 2007-09-21 | Double Dynasty Co Ltd | Direction adjustable device of front guard for grinding machine |
| CN101293330A (en) * | 2007-04-28 | 2008-10-29 | 苏州宝时得电动工具有限公司 | Power tool with protecting cap |
| CN101535000A (en) * | 2006-11-13 | 2009-09-16 | 罗伯特·博世有限公司 | Portable power tool, especially angle grinder, comprising a protective hood |
| US20090311953A1 (en) * | 2008-06-17 | 2009-12-17 | Joerg Maute | Power tool, in particular handheld power tool |
| CN101835560A (en) * | 2007-10-22 | 2010-09-15 | 株式会社牧田 | Stopper of wheel guard in grinder |
| CN101927445A (en) * | 2009-06-26 | 2010-12-29 | 盐城市雷鸣电器制造有限公司 | Desktop electric grinder |
| CN202114566U (en) * | 2011-05-17 | 2012-01-18 | 南京德朔实业有限公司 | Power tool |
| CN102470503A (en) * | 2009-08-10 | 2012-05-23 | 罗伯特·博世有限公司 | Machine tool having a protective cover |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2589309A (en) * | 1946-08-27 | 1952-03-18 | Ralph R Roemer | Circular saw safety guard |
| SE507264C2 (en) * | 1996-06-13 | 1998-05-04 | Atlas Copco Tools Ab | Handheld power tool |
| US7982137B2 (en) * | 2007-06-27 | 2011-07-19 | Hamilton Sundstrand Corporation | Circuit board with an attached die and intermediate interposer |
| DE102007057032A1 (en) * | 2007-11-27 | 2009-05-28 | Robert Bosch Gmbh | Hand tool |
| US8141941B2 (en) * | 2010-07-23 | 2012-03-27 | Toyota Motor Engineering & Manufacturing North America, Inc. | Slidable window assembly with retractable sunshade |
| JP2013078823A (en) | 2011-10-04 | 2013-05-02 | Makita Corp | Power tool and method of manufacturing the same |
| JP5959421B2 (en) * | 2011-12-14 | 2016-08-02 | 株式会社マキタ | Grinder |
| JP5836876B2 (en) | 2012-04-25 | 2015-12-24 | 株式会社マキタ | Electric tool |
-
2015
- 2015-09-10 JP JP2015178689A patent/JP6632840B2/en active Active
-
2016
- 2016-07-21 CN CN201610581604.9A patent/CN106514496A/en active Pending
- 2016-09-07 EP EP16187675.0A patent/EP3141340B1/en active Active
- 2016-09-07 US US15/258,010 patent/US20170072533A1/en not_active Abandoned
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2923177Y (en) * | 2006-06-26 | 2007-07-18 | 苏州宝时得电动工具有限公司 | Corner-grinding protective cover clamp |
| CN101535000A (en) * | 2006-11-13 | 2009-09-16 | 罗伯特·博世有限公司 | Portable power tool, especially angle grinder, comprising a protective hood |
| TWM319119U (en) * | 2007-02-02 | 2007-09-21 | Double Dynasty Co Ltd | Direction adjustable device of front guard for grinding machine |
| CN101293330A (en) * | 2007-04-28 | 2008-10-29 | 苏州宝时得电动工具有限公司 | Power tool with protecting cap |
| CN101835560A (en) * | 2007-10-22 | 2010-09-15 | 株式会社牧田 | Stopper of wheel guard in grinder |
| US20090311953A1 (en) * | 2008-06-17 | 2009-12-17 | Joerg Maute | Power tool, in particular handheld power tool |
| CN101927445A (en) * | 2009-06-26 | 2010-12-29 | 盐城市雷鸣电器制造有限公司 | Desktop electric grinder |
| CN102470503A (en) * | 2009-08-10 | 2012-05-23 | 罗伯特·博世有限公司 | Machine tool having a protective cover |
| CN202114566U (en) * | 2011-05-17 | 2012-01-18 | 南京德朔实业有限公司 | Power tool |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109093495A (en) * | 2017-06-20 | 2018-12-28 | 株式会社牧田 | Grinder |
| US11148251B2 (en) | 2017-06-20 | 2021-10-19 | Makita Corporation | Grinder |
| CN107553416A (en) * | 2017-10-25 | 2018-01-09 | 锐奇控股股份有限公司 | Electric tool protective cover adjusting means and electric tool |
| CN107553416B (en) * | 2017-10-25 | 2024-03-15 | 锐奇控股股份有限公司 | Electric tool protection casing adjusting device and electric tool |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017052059A (en) | 2017-03-16 |
| EP3141340A1 (en) | 2017-03-15 |
| JP6632840B2 (en) | 2020-01-22 |
| EP3141340B1 (en) | 2018-04-11 |
| US20170072533A1 (en) | 2017-03-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106514496A (en) | Grinder | |
| CN106514467A (en) | Grinder and cover | |
| CN106514468A (en) | Grinder, cover and cover set | |
| US7014547B2 (en) | Portable grinding machine with protective cover | |
| US10092957B2 (en) | Tool feed system for use with a rotating machining device | |
| JP4471303B2 (en) | Bolt tightening tool | |
| US7819036B2 (en) | Electromotive linear drive | |
| CN106514487A (en) | Grinder, cover, and lock nut | |
| RU2006130852A (en) | DRIVE UNIT WITH CABLE CONNECTOR | |
| US9022838B2 (en) | Assembly for grinding electrodes | |
| CN201645324U (en) | Fixing piece anti-drop structure for wheel guard on angle grinder | |
| US2707854A (en) | Grinding wheel guard | |
| US20050217452A1 (en) | Saw/grinder attachment | |
| WO2008143054A1 (en) | Angular indexing device for machine tool | |
| CN102606526B (en) | Fan assembly | |
| US10092959B2 (en) | Portable lathe machine | |
| CN105517764A (en) | Insulation system for a tool and tool having same | |
| US7252580B2 (en) | Grinder with easily installable/detachable grinding disc | |
| US20140230211A1 (en) | Power cutter | |
| KR101861265B1 (en) | Portable pipe threading machine | |
| JP6982991B2 (en) | Grinder | |
| US6752704B1 (en) | Grinder with easily installable/detachable grinding disc | |
| US2541412A (en) | Cylinder block ridge grinder | |
| TWI677412B (en) | Power tools | |
| GB2443172A (en) | Apparatus for assembling a generator to an engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170322 |