CN103158071A - Grinder - Google Patents
Grinder Download PDFInfo
- Publication number
- CN103158071A CN103158071A CN2012103954347A CN201210395434A CN103158071A CN 103158071 A CN103158071 A CN 103158071A CN 2012103954347 A CN2012103954347 A CN 2012103954347A CN 201210395434 A CN201210395434 A CN 201210395434A CN 103158071 A CN103158071 A CN 103158071A
- Authority
- CN
- China
- Prior art keywords
- installation portion
- engaging
- section
- holding section
- grinder
- 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.)
- Granted
Links
Images
Abstract
The invention provides a grinder, which can reasonably form an installation structure of a wheel cover, and can downsize a whole size of the grinder. The grinder (1) comprises a body having an annular portion (62), a wheel cover (40) which is attachable to the annular portion (62), and a wheel cover holding member (70) which holds the wheel cover (40). The wheel cover (40) has a cylindrical portion (42) which is attachable to the annular portion. The wheel cover holding member has a slide member (71) which is engaged with the cylindrical portion, and a pressing portion (91) which moves an engagement part. The pressing portion switches a state between an engagement state in which the slide member is engaged with the cylindrical portion and a disengagement state in which the slide member is disengaged with the cylindrical portion by moving the slide member. The pressing member (91) moves on a second line which is parallelly offset from a first line passing the center of the annular portion (42) in a predetermined direction.
Description
Technical field
The present invention relates to a kind of grinder with runner protecting hood.
Background technology
Disclose a kind of motor-driven mill with security protection section in the special table of the open communique of Japanese patent of invention 2006-521937.This security protection section can be locked in a plurality of set angles positions by clamping device.This clamping device extends along the length direction of the housing of receiving the dress motor, and configures towards rotary output axis.
In the special table of the open communique of above-mentioned Japanese patent of invention 2006-521937, center at safty shield is provided with rotary output axis, the clamping device of motor-driven mill can be in the footpath of the central axis by this rotary output axis upwards, locking the position and carrying out traveling priority with liberating between the position.Clamping device has the moving part that carries out traveling priority, must be configured in the radial outside of the maximum diameter section of safty shield due to this moving part, thereby, configure the increase (maximization) that such clamping device can cause the size of motor-driven mill.
The prior art document
Patent documentation
Patent documentation 1: the special table of the open communique of Japanese patent of invention 2006-521937
Summary of the invention
In view of this, the object of the present invention is to provide a kind of technology can reasonably form the mounting structure of runner protecting hood.
For achieving the above object, grinder of the present invention is: it has: the main part with collar; Can be arranged on the runner protecting hood on the described collar; Described runner protecting hood is fixedly remained on holding member on the described collar.Described runner protecting hood has the installation portion that is arranged on the annular on the described collar, the holding section operating portion that described holding member has the holding section that engages with described installation portion and described holding section is moved.Described holding section operating portion can make the holding section move and switch between the fastening state that fastens in described installation portion and described holding section and described installation portion and engaging disarm state that engaging of described holding section is disengaged, and, described holding section operating portion leave the 1st straight line and with the 2nd straight line of the 1st straight line parallel on carry out traveling priority, described the 1st straight line refers on prescribed direction the straight line by the center of described installation portion.
Adopt the present invention, make the holding section operating portion carry out traveling priority leaving the 1st straight line and be parallel on the 2nd straight line of the 1st straight line.This compares with the structure of carrying out traveling priority on the 1st straight line, can reduce to comprise the size of the runner maintaining body of runner protecting hood and holding member.Namely, when employing makes the engaging operating portion carry out the structure of traveling priority on the 1st straight line, the length dimension of runner protecting hood maintaining body on the bearing of trend of the 1st straight line be, the length dimension sum of the length dimension of the maximum outside diameter of installation portion and the movable area that engages operating portion.And employing the present invention, carry out traveling priority due to the holding section operating portion leaving the 1st straight line and be parallel on the 2nd straight line of the 1st straight line, thereby, can shorten the length dimension of runner protecting hood maintaining body on prescribed direction, shortening amount is, length and the diameter of installation portion poor of the part of the configuration holding section functional unit of installation portion on prescribed direction.Utilize the configuration structure of such runner protecting hood maintaining body can reduce the overall dimensions size of grinder.
An optimal way of grinder of the present invention is: described holding section engages with the outer end of described installation portion, and this outer end is positioned on the straight line of the central area that is parallel to described the 1st straight line and passes through described installation portion.
Adopt this mode, when the holding section operating portion is consistent with the moving direction of holding section, holding section and installation portion, engage with part that straight line that the moving direction of the holding section operating portion of central area by this installation portion parallels intersects, thereby the holding section is stably engaged with installation portion.That is, thus the moving direction by making the holding section can make the holding section stably engage with installation portion near the normal direction of installation portion.
The optimal way of grinder of the present invention is: remove and the engaging of described installation portion to the medial movement of described installation portion described holding section.
Adopt this mode, due to the medial movement of holding section to installation portion, thereby, compare to the structure of the outer side shifting of installation portion with the holding section, can reduce the appearance and size of grinder.
The optimal way of grinder of the present invention is: described holding section is made of a plurality of engaging inscape section with the engaging of described installation portion.
Adopt the manner, because the holding section is made of a plurality of engaging inscape section, thereby can be kept installation portion by a plurality of engaging inscape section, so can stably keep installation portion.
The optimal way of grinder of the present invention is: described holding section is made of a plurality of engaging inscape section with the engaging of described installation portion, at least one described engaging inscape section removes to described installation portion medial movement and the engaging of described installation portion, and remaining described engaging key element section is to the outer side shifting of described installation portion and remove and the engaging of described installation portion.
Adopt this mode, the holding section is moved to a direction with respect to installation portion a plurality of engaging inscape section is dodged to inboard and the outside of installation portion respectively.That is, do not need the holding section carry out complicated move mode can engagement release the engaging of section and installation portion.
The optimal way of grinder of the present invention is: described holding section operating portion is configured in, with the corresponding tangent line of the tangent line zone of the described installation portion of described the 1st straight line parallel, and this holding section operating portion is parallel to this and tangentially carries out traveling priority.
Adopt the manner, the holding section operating portion leaves the 1st straight line and is parallel near the tangent line zone of tangent line of the 1st straight line.Thereby in the position that configures the holding section operating portion, the length dimension of installation portion on the moving direction of holding section operating portion can be roughly zero.So, can shorten the length dimension of runner protecting hood maintaining body on the direction that is parallel to the 1st straight line.
The optimal way of grinder of the present invention is: described a plurality of engaging inscape section is with respect to the Central Symmetry of described installation portion.
If a plurality of engaging inscape section is asymmetric with respect to the center of installation portion, the center of fiqure (center) of a plurality of engaging inscape section is inconsistent with the center of installation portion, thereby holding member carries out bias maintenance to installation portion.On the other hand, adopt the manner, due to a plurality of engaging inscape section Central Symmetry with respect to described installation portion, thereby holding member can stably keep installation portion.
The optimal way of grinder of the present invention is: described runner protecting hood can be by with respect to the rotation of the described collar and optionally be configured on a plurality of different turned positions, and described runner protecting hood can be arranged on the described collar and be arranged on one that selects from described a plurality of turned positions.Described installation portion has a plurality of sections that are stuck that engage with described holding section, described a plurality of be stuck section with week of the annular section that uniformly-spaced is formed on described installation portion upwards.Described a plurality of engaging inscape section engages with described a plurality of of being stuck in section corresponding to selected described turned position.
Adopt the manner, runner protecting hood bag to remain on from a plurality of turned positions on selected turned position, thereby, the position of runner protecting hood can be changed corresponding to operating type.In addition, a plurality of sections that are stuck are uniformly-spaced to form, corresponding to the turned position of selected runner protecting hood, a plurality of engaging inscape section engages with the section of being stuck accordingly, thereby, no matter in which turned position, can both be kept installation portion by a plurality of engaging inscape section.
The optimal way of grinder of the present invention is: described holding member has the loading component that described holding section operating portion is loaded.Described holding section operating portion moves by the active force that overcomes described loading component and removes engaging of described installation portion and described holding section.
Adopt the manner, at installation portion with when the holding section is engaging, by loading component to the loading of holding section functional unit, thereby, can prevent that holding section operating portion accident from receiving that the effect of external force causes installation portion to be disengaged with engaging of holding section.
The optimal way of grinder of the present invention is: described holding member has and engages the inclination movement limiting portion that the inclination that limits described runner protecting hood is moved with described installation portion.
Adopt the manner, because holding member has the inclination movement limiting portion, thereby can suppress the inclination of runner protecting hood.In addition, can suppress the inclination that vibration that grinder produces when driven causes runner protecting hood.
The optimal way of grinder of the present invention is: described installation portion has a plurality of sections that are stuck that engage with described holding section.Also has the 1st elastomeric element that engages with the described section of being stuck.Described the 1st elastomeric element loads described installation portion on the direction parallel with the central axis of described installation portion.Described installation portion can upwards rotate in week with respect to the described collar, by the active force of described the 1st elastomeric element, described installation portion is connected on the described collar.
Adopt the manner, upwards rotate in week with respect to the collar by making installation portion, thereby can make runner protecting hood arrive a plurality of turned positions.And, because the active force of the 1st elastomeric element is connected on the collar installation portion, thereby, installation portion unstable with respect to the motion of the collar of this installation portion when upwards rotating in week can be suppressed.In addition, be fastened in the section of being stuck by making the 1st elastomeric element, thus the turned position that can keep reliably runner protecting hood.That is, can position on circumferentially runner protecting hood reliably.
The optimal way of grinder of the present invention is: also have the 2nd elastomeric element that by described holding member, described installation portion is loaded on the direction parallel with the central axis of described installation portion.Active force by described the 2nd elastomeric element is connected on the described collar described installation portion.
Adopt the manner, because the 2nd elastomeric element is connected on the collar installation portion by holding member, thereby can suppress installation portion unstable with respect to the motion of the collar of this installation portion when upwards rotating in week.
The optimal way of grinder of the present invention is: described the 1st elastomeric element and described the 2nd elastomeric element are integrally formed.
Adopt the manner, because the 1st elastomeric element and the 2nd elastomeric element are made of parts, thereby, can suppress the increasing of quantity of parts.
The optimal way of grinder of the present invention is: described collar assigned position in the axial direction is formed with recess.Described holding member engages with described recess makes this holding member be prevented from described movement on axially, but allow this holding member the described collar radially on move.
Adopt the manner, owing to can holding member be kept by the recess that is formed on the collar, thereby do not need to be provided for again parts that holding member is kept.
Effect of the present invention
Adopt the present invention, thereby can provide a kind of technology can reasonably form the mounting structure of runner protecting hood.
Description of drawings
Fig. 1 is the integrally-built cutaway view of the grinder of expression the specific embodiment of the present invention;
Fig. 2 is the top view of runner protecting hood;
Fig. 3 is the oblique view of the integral body of the mounting structure of expression runner protecting hood;
Fig. 4 is the exploded perspective view of Fig. 3;
Fig. 5 is the oblique view of runner protecting hood installation portion;
Fig. 6 is the top view of Fig. 5;
Fig. 7 is the top view of Fig. 5;
Fig. 8 is the side view of Fig. 5;
Fig. 9 is the partial enlarged drawing of Fig. 1;
Figure 10 is the cutaway view along X-X line in Fig. 1;
Figure 11 is the cutaway view along XI-XI line in Fig. 1;
Figure 12 produces the accompanying drawing of the state of movement for expression makes slide unit and push part in Figure 11;
Figure 13 makes the accompanying drawing of the state of the slide unit generation movement in Figure 10 for expression;
Figure 14 is the cutaway view that is equivalent to Figure 11 of the 1st variation;
Figure 15 is the cutaway view that is equivalent to Figure 11 of the 2nd variation.
Description of reference numerals
1 grinder; 2 emery wheels; 10 main casings; 20 transmission mechanism housings; 30 back casings; 40 runner protecting hoods; 41 guard section; 42 cylindrical portion (installation portion); 43 protuberances; 44 engaging recessed parts (being stuck section); 50 runner protecting hood installation portions; 60 runner protecting hood engaging parts; 61 pedestals; 62 ring parts (collar); 63 spindle through-holes; 64 gathering sills; 65 the 1st slots; 66 the 2nd slots (recess); 67 dodge section; 68 bolts; 70 runner protecting hood holding members (holding member); 71 slide units (holding section); 72 flat parts; 73 notch; 74 engaging protuberances (engaging inscape section); 75 movement limiting portions (inclination movement limiting portion); 76 screws; 80 leaf springs; 81 fixed parts; 82 the 1st loading sections (the 1st elastomeric element); 83 holding sections (the 1st elastomeric element); 84 the 2nd loading sections (the 2nd elastomeric element); 90 push part; 91 pushing sections; 92 helical springs; 93 spring abutting parts; 94 guide rods; 95 bolts; 96 packing rings; 97 screws; 100 motors; 101 rotating shafts; 200 the 1st bevel gears; 201 the 2nd bevel gears; 202 main shafts; 300 power supply wiring sections; L1 straight line (the 1st straight line); L2 straight line (the 2nd straight line).
The specific embodiment
With reference to the accompanying drawings the specific embodiment of the present invention is described in detail.Present embodiment is for being applied to the present invention an example on grinder.This grinder is the power tool that has as the emery wheel, cutting tool that grind cutting knife tool, mask cutter etc. etc., thereby emery wheel, cutting tool rotation can be ground work piece cut, cut and the operation of cutting etc.
As shown in Figure 1, the main body of grinder 1 is made of main casing 10, transmission mechanism housing 20, back casing 30 and runner protecting hood 40 etc.
As shown in Figure 2, runner protecting hood 40 parts of semicircular in shape roughly when overlooking.This runner protecting hood 40 is made of guard section 41 and cylindrical portion 42.Be provided with on cylindrical portion 42 to three outstanding protuberances 43 of radially inner side.In addition, as shown in Figure 3 and Figure 4, equally spaced be provided with 12 engaging recessed parts 44 on cylindrical portion 42 on circumferentially.As shown in Figure 1, this runner protecting hood 40 is arranged on runner protecting hood installation portion 50 by cylindrical portion 42, and can unload.Thereby, by half circumference of guard section 41 from outer side covers emery wheel 2.So, can be suppressed to be added by 2 pairs of work pieces of emery wheel by runner protecting hood 40 the dispersing of fragment of the work piece that causes man-hour, and prevent that the user from touching the emery wheel 2 of rotation, the protection user can be not injured.
Below with reference to Fig. 3 ~ Figure 13, the installation portion that this runner protecting hood 40 is installed is described in detail.In addition, in Fig. 3 ~ Figure 13, for convenience, the parts outside runner protecting hood 40 and runner protecting hood installation portion 50 have been omitted.And, in Fig. 5 ~ Fig. 8, for convenience, runner protecting hood 40 has also been dispensed.As Fig. 3 ~ shown in Figure 8, runner protecting hood installation portion 50 mainly is made of runner protecting hood engaging part 60 and runner protecting hood holding member 70 grades.
As shown in Figure 4, runner protecting hood engaging part 60 by pedestal 61 and from this pedestal 61 outstanding ring part cylindraceous 62 consist of.Be formed with the spindle through-hole 63 that passes for main shaft 202 at the center of ring part 62.As Fig. 4 ~ shown in Figure 6, be formed with in the periphery of ring part 62 gathering sill 64 that three protuberances 43 to runner 40 lead.In addition, as Fig. 4, Fig. 7 and shown in Figure 8, be formed with at the complete cycle of the periphery of ring part 62 the 1st slot 65 that is communicated with gathering sill 64.In addition, in the coupling part of pedestal 61 with ring part 62, be formed with the 2nd holding section 66 on the complete cycle of ring part 62.In addition, as Fig. 4 ~ shown in Figure 6, be formed with the section of dodging 67 in the periphery of ring part 62, this dodges section 67 can move to the direction near the center of ring part 62 engaging protuberance 74b.This is dodged section 67 and is connected with the 2nd holding section 66.Runner protecting hood engaging part 60 is fixed on transmission mechanism housing 20 by 4 bolts 68.This runner protecting hood engaging part 60 is example structure corresponding to " collar " of the present invention.
As shown in Figure 4, runner protecting hood holding member 70 mainly is made of slide unit 71, leaf spring 80 and push part 90.
As Fig. 4 ~ shown in Figure 6, slide unit 71 is for having the parts of flat part 72, and this flat part 72 roughly is flat parts for the roughly half cycle scope of the periphery that is configured in ring part 62.On flat part 72, be formed with two notch 73 in position corresponding to head from two outstanding bolts 68 of pedestal 61.In addition, as shown in Figure 6, the straight line along the above-below direction of Fig. 6 by the center of ring part 62 is L1, slide unit 71 with end position that this straight line intersects on have from outstanding two of flat part 72 and engage protuberance 74a, 74b.In addition, slide unit 71 also has movement limiting portion 75, and this movement limiting portion 75 gives prominence to and face toward the periphery configuration of ring part 62 from flat part 72.As shown in Figure 4, be formed with the screw 76 that screws with two screws 97 on flat part 72.
As shown in Figure 4, leaf spring 80 is for roughly being the tabular metal parts of letter U shape, the roughly half cycle of the peripheral part of its cover ring shaped part 62 when overlooking.This leaf spring 80 has fixed part 81, and two ends of this fixed part 81 are passed for bolt 68 respectively, by two bolts 68, leaf spring 80 are fixed on pedestal 61.In addition, as Fig. 4, shown in Figure 8, leaf spring 80 has: in two the 1st loading sections 82 of thickness of slab direction bending, be formed on the part that connects two the 1st loading sections 82 further on the thickness of slab direction outstanding holding section 83, connect the 2nd loading section 84 of the 1st loading section 82 and fixed part 81.This holding section 83 can engage with the engaging recessed part 44 of runner protecting hood 40.In addition, the 2nd loading section 84 is crooked on the thickness of slab direction from the side.
As Fig. 4 ~ shown in Figure 6, thereby push part 90 is used for for the user, pushing section 91 being pushed and makes the slide unit 71 that is connected with pushing section 91 produce slips with respect to pedestal 61.Roughly be the L shaped pushing of letter section 91 along straight line L2 configuration shown in Figure 6.This pushing section 91 is configured near the tangent line zone the tangent line parallel with straight line L1 of ring part 62.End in pushing section 91 is installed with helical spring 92.This helical spring 92 and spring abutting part 93 butts that are fixed on transmission mechanism shell 20.Particularly, be provided with guide rod 94 on spring abutting part 93, this guide rod 94 passes the inside of helical spring 92.Thereby helical spring 92 can be flexible along the 2nd straight line L2 in Fig. 6, and pushing section 91 moves on the bearing of trend of straight line L2.Spring abutting part 93 is fixed on transmission mechanism housing 20 by packing ring 96 by bolt 95.In addition, be provided with two screws 97 in pushing section 91, this screw 97 screws with the screw 76 of slide unit 71, thereby slide unit 71 and pushing section 91 are moved jointly.Above-mentioned straight line L1 and L2 are respectively corresponding to " the 1st straight line " in the present invention example structure with " the 2nd straight line ".
Have as above that the runner protecting hood holding member 70 of structure is mounted as illustrated in fig. 5, slide unit 71 can be slided with respect to pedestal 61.Particularly, as Fig. 9, shown in Figure 10, slide unit 71 is kept by the 2nd slot 66 of ring part 62, can be with respect to the right and left upward sliding of pedestal 61 at Figure 10.At this moment, as shown in Figure 8, the 2nd loading component 84 of leaf spring 80 is configured between slide unit 71 and pedestal 61, and slide unit 71 is namely loaded with respect to the 2nd slot 66 to the top of Fig. 8.The 2nd loading section 84 is the example structure corresponding to " the 2nd elastomeric element " in the present invention.
In addition, as shown in figure 11, push part 90 remains on pushing section 91 with helical spring 92 with the state of compression and is fixed between spring abutting part 93 on transmission mechanism housing 20.Thereby the top by 92 pairs of push part 90 of helical spring and slide unit 71 in along straight line L2 to Figure 11 loads.Namely, helical spring 92 is along straight line L1 one segment distance that leaves the center by ring part 62 and be parallel to the straight line L2 configuration of this straight line L1, thereby, near the tangent line zone that push part 90 can be the tangent line parallel with straight line L1 of ring part 62, carry out traveling priority on the bearing of trend of straight line L2.In addition, as shown in Figure 6, under the state that runner protecting hood 40 is not installed, the engaging protuberance 74a of a side is connected on ring part 62, and restriction push part 90 and slide unit 71 move to the top in Fig. 6.
In addition, as shown in Figure 12 and Figure 13, make it overcome the active force of helical spring 92 and move if pushing section 91 is pushed, the engaging protuberance 74b of opposite side does rectilinear motion to the direction at the center of close ring part 62 on straight line L1, with dodge section's 67 butts, thereby the movement of below (left in Figure 13) in Figure 12 of slide unit 71 is prevented from.At this moment, the engaging protuberance 74a of a side outwards moves along straight line L1 from the central side of ring part 62.This runner protecting hood holding member 70 is the example structure corresponding to " holding member " in the present invention.In addition, pushing section 91 is the example structure corresponding to " engaging operating portion " in the present invention, and helical spring 92 is the example structure corresponding to " loading component " in the present invention.
The below is described in detail the structure that runner protecting hood 40 is maintained on runner protecting hood installation portion 50.Runner protecting hood 40 is arranged on runner protecting hood installation portion 50 and can unloads.And runner protecting hood 40 has a plurality of turned positions with respect to runner protecting hood installation portion 50.Particularly, runner protecting hood 40 is fastened on ring part 62 by cylindrical portion 42 is chimeric, and, can upwards rotate in the week of runner protecting hood installation portion 50.Thereby, make guard section 41 have a plurality of turned positions with predetermined angular with respect to runner protecting hood installation portion 50 and transmission mechanism housing 20.In other words, that is, thereby being rotated with respect to runner protecting hood installation portion 50, runner protecting hood 40 can be configured on a plurality of different turned positions.Thereby, can select one from a plurality of turned positions, make runner protecting hood 40 configurations thereon.Thereby, can make runner protecting hood 40 be arranged on select one arbitrarily on the turned position from a plurality of turned positions with respect to runner protecting hood installation portion 50.
When runner protecting hood 40 is installed, as shown in Figure 12 and Figure 13, push part 90 is pushed, engaging protuberance 74a, 74b are produced mobile, under this state, the cylindrical portion 42 of runner protecting hood 40 is fastened on ring part 62.At this moment, make the position of gathering sill 64 of three protuberance 43 alignment ring shaped parts 62 of runner protecting hood 40.Afterwards, make runner protecting hood 40 with respect to ring part 62 ring part 62 axially on move, thereby cylindrical portion 42 is configured between ring part 62 and movement limiting portion 75.Cylindrical portion 42 abuts to the flat part 72 of slide unit 71, and it moves and is prevented from, and protuberance 43 enters in the 1st slot 65 via gathering sill 64.Thereby, make protuberance 43 be maintained in the 1st slot 65 and can upwards rotate in the week of ring part 62.At this moment, the 2nd loading section 84 of leaf spring 80 by flat part 72 ring part 62 axially on cylindrical portion 42 is loaded.The structure that cylindrical portion 42 is fastened on ring part 62 is so-called bayonet socket (bayonet) structure.This cylindrical portion 42 is the example structure corresponding to " installation portion " in the present invention.
Along with the rotation of runner protecting hood 40 with respect to ring part 62, one in the holding section 83 of leaf spring 80 and 12 engaging recessed parts 44 engages.That is, rotate with respect to ring part 62 by making runner protecting hood 40, thereby can be made by the strain of the 1st loading section 82 of leaf spring 80 releasing that engages of holding section 83 and engaging recessed part 44.In addition, holding section 83 is optionally engaged with each engaging recessed part 44.By holding section 83 is engaged with any engaging recessed part 44, thereby can position runner protecting hood 40, determine its turned position.That is, rotate with respect to ring part 62 by making runner protecting hood 40, thereby runner protecting hood 40 is arranged on a plurality of turned positions with respect to ring part 62.The 1st loading section 82 and holding section 83 are the example structure corresponding to " the 1st elastomeric element " in the present invention, and engaging recessed part 44 is the example structure corresponding to " being stuck section " in the present invention.
Select from a plurality of turned positions and determine a turned position, removing the pushing to push part 90,, under the effect of the active force of helical spring 92, pushing section 91 together with slide unit 71 to position movement shown in Figure 11.Thereby engaging protuberance 74a, 74b engage with the engaging recessed part 44 of cylindrical portion 42, runner protecting hood 40 are remained on the state that can not rotate with respect to ring part 62.At this moment, the periphery of cylindrical portion 42 and movement limiting portion 75 butts stop push part 90 and slide unit 71 to move to the top in Figure 11.In addition, when the periphery butt of movement limiting portion 75 and cylindrical portion 42, the engaging protuberance 74a of an above-mentioned side not with ring part 62 butts.Slide unit 71 with engaging protuberance 74a, 74b is the example structure corresponding to " holding section " in the present invention, and holding section 74a, 74b are the example structure corresponding to " engaging inscape section " in the present invention.
When changing the turned position of runner protecting hood 40, as shown in Figure 12 and Figure 13, push part 90 is pushed, engaging protuberance 74a, 74b are moved, engagement release protuberance 74a, 74b engage with engaging recessed part 44.At this moment, engaging protuberance 74b moves to the direction at the center of close ring part 62, and engaging protuberance 74a moves laterally from the central side of ring part 62.That is, engaging protuberance 74b is to the medial movement of cylindrical portion 42, and engaging protuberance 74a is to the outer side shifting of cylindrical portion 42, and engaging protuberance 74a, 74b are disengaged with engaging of engaging recessed part 44.Afterwards, runner protecting hood 40 is rotated until arrive the turned position of regulation with respect to ring part 62.After runner protecting hood 40 is rotated, remove the pushing to push part 90, thereby engaging protuberance 74a, 74b are engaged with engaging recessed part 44 again, runner protecting hood 40 is remained on the turned position of regulation.
Adopt present embodiment as above, make push part 91 that slide unit 71 moves, straight line L1 one segment distance that leaves the center by ring part 62 and be parallel to this straight line L1 ring part 62 tangent line near the zone, carry out traveling priority along the straight line L2 that is parallel to this tangent line.This compares along the structure that the straight line L 1 by above-mentioned center carries out traveling priority with making push part 90, can reduce the size of runner installation portion 50.For example, when employing makes push part 90 carry out the structure of traveling priority along the straight line L1 by above-mentioned center, the length dimension of runner installation portion 50 on the bearing of trend of straight line L1 be, the length dimension of the length dimension of the maximum outside diameter of ring part 62 (diameter of ring part 62) and the movable area of push part 90 (from pushing section 91 length to spring abutting part 93) sum.And in the present embodiment, because push part 90 is that traveling priority is carried out near the zone of tangent line of leaving straight line L1 one segment distance at the center by ring part 62 and being parallel to the ring part 62 of this straight line L1, thereby the length dimension of runner installation portion 50 on the bearing of trend of straight line L1 is only the length of the movable area of push part 90.Utilize the structure of such runner protecting hood installation portion 50 can reduce the size of grinder 1.
In addition, adopt present embodiment, what slide unit 71 and push part 90 were carried out is traveling priority.This be not that the structure of carrying out traveling priority is compared, can improve the service life of slide unit 71 and push part 90.That is, owing to carrying out traveling priority, thereby slide unit 71 slides as a whole with push part 90, so the viewpoint of each structure member that consists of slide unit 71 and push part 90 from being worn away etc. is placed under same condition of work.Rather than carry out in the structure of traveling priority, due to can rotate on each structure member, torsion etc., thereby the amount of movement of each structure member is different.Thereby, can concentrate at the specific local stress that produces, to consider from the angle of durability etc., this can increase consumption degree and the degree of aging of specific structure member.In the present embodiment, because slide unit 71 and push part 90 are carried out traveling priority, thereby can extend the service life of each parts of slide unit 71 and push part 90.
In addition, adopt present embodiment, engaging protuberance 74a, 74b engage with cylindrical portion 42, the outer end that be positioned on the diameter that parallels with the moving direction of push part 90 of runner protecting hood 40.That is, the position at engaging protuberance 74a, 74b both ends on farthest the diameter of being separated by of cylindrical portion 42 engages with engaging recessed part 44, thereby, can stably keep runner protecting hood 40.In addition, by push part 90 is moved on straight line L2, thereby engaging protuberance 74a, 74b are moved on straight line L1, thereby the position at engaging protuberance 74a, 74b both ends on farthest the diameter of being separated by of cylindrical portion 42 is engaged with engaging recessed part 44.
In addition, adopt present embodiment, thereby the engaging protuberance 74b of a side enters in the section of dodging 67 to the medial movement of ring part 62.This compares to the structure of the outer side shifting of ring part 62 with making two engaging protuberance 74a, 74b, can reduce the appearance and size of grinder 1.In addition, owing to being engaging protuberance 74a to the outer side shifting of ring part 62, engaging protuberance 74b to the such structure of the medial movement of ring part 62, thereby, can not cause the structure of slide unit 71 more complicated, slide unit 71 is slided to a direction engaging protuberance 74a, 74b are moved.
In addition, adopt present embodiment, corresponding to the rotation of runner protecting hood 40, the holding section 83 of leaf spring 80 engages or engagement release with engaging recessed part 44.Thereby 83 when engaging with engaging recessed part 44 in the holding section, utilizes the elastic force of leaf spring 80, makes the rotation of runner protecting hood 40 produce " click clatter " sound, makes the user can experience the turned position, thereby can reliably runner protecting hood 40 be positioned at the turned position of regulation.
In addition, adopt present embodiment, the cylindrical portion 42 of the 2nd loading section 84 of leaf spring 80 by 72 pairs of runner protecting hoods 40 of flat part of slide unit 71 ring part 62 axially on load, and, the holding section 83 of leaf spring 80 also to the cylindrical portion 42 of runner protecting hood 40 ring part 62 axially on load.Thereby the rotation posture (state) when runner protecting hood 40 is rotated is more stable.In addition, because being consists of the 1st loading section 82 and the 2nd loading section 84 by a leaf spring 80, thereby can suppress increasing of number of components.
In addition, adopt present embodiment, the periphery of cylindrical portion 42 is connected on movement limiting portion 75, is maintained on ring part 62 with such state.Thereby, the unstability of the maintenance of the runner protecting hood 40 that the vibration that can suppress to produce when grinder 1 drives causes.
In addition, adopt present embodiment, owing to forming the 2nd slot 66 on ring part 62, engaging slide unit 71 on the 2nd slot 66.Thereby, needn't make slide unit 71 produce in the axial direction movement slide unit 71 is slided with respect to pedestal 61.In addition, owing to forming notch 73 corresponding to the position of bolt 68, thereby, can be come off from ring part 62 by the head anti-skidding parts 71 of bolt 82.
The following describes the variation of present embodiment having been implemented numerous variations.Wherein, the structure identical with present embodiment uses identical symbol to carry out mark, and suitably omitted its description.
As shown in figure 14, in the 1st variation, L3 and L4 are two straight lines that are parallel to the straight line L2 that extends on the moving direction of push part 90, and both pass through the central area of cylindrical portion 42. Engaging protuberance 74a and 74b respectively with the fastening with straight line L3, L4 crossing outer end of cylindrical portion 42.That is, the engaging protuberance 74a of a side engages with the outer end with straight line L3 intersects of cylindrical portion 42, and the engaging protuberance 74b of opposite side engages with the outer end with straight line L4 intersects of cylindrical portion 42.This engaging protuberance 74a, 74b are with respect to the Central Symmetry configuration of cylindrical portion 42.In the 1st variation, due to engaging protuberance 74a, 74b also with cylindrical portion 42 on, the engaging recessed part 44 farthest, that be positioned on the end positions on diameter of being separated by engages, thereby can stably keep runner protecting hood 40.
In addition, as shown in figure 15, be provided with three engaging protuberance 74a, 74b, 74c in the 2nd variation.Engaging protuberance 74a engages with the outer end that the straight line L1 at the center of passing through this cylindrical portion 42 of cylindrical portion 42 intersects.Engaging protuberance 74b, 74c engage respectively at cylindrical portion 42 and straight line L3, the L4 of central area by this cylindrical portion 42 crossing outer end.Engage with engaging recessed part 44 three engaging protuberance 74a, 74b, 74c are with respect to the Central Symmetry setting of cylindrical portion 42.In the 2nd variation, due to three engaging protuberance 74a, 74b, the 74c Central Symmetry setting with respect to cylindrical portion 42, thereby can stably keep runner protecting hood 40.
In the above, runner protecting hood 40 is arranged on runner protecting hood installation portion 50 and can unloads, yet the present invention is not limited to this.That is, so long as runner protecting hood 40 can rotate, can get final product with respect to the structure that runner protecting hood installation portion 50 remains on a plurality of turned positions, runner protecting hood 40 can not be unloaded from runner protecting hood installation portion 50.
In addition, in the above, the engaging protuberance is with respect to the Central Symmetry configuration of cylindrical portion 42, yet the present invention is not limited to this, also can make the engaging protuberance asymmetric with respect to the center of cylindrical portion 42.In addition, the above is illustrated for the situation that is provided with plural engaging protuberance, yet, also can only be provided with an engaging protuberance.Only be provided with an engaging during protuberance, this engaging protuberance made engage the releasing that engages of protuberance and engaging recessed part to the medial movement of cylindrical portion 42.
Claims (14)
1. grinder, it has:
Main part with collar;
Can be arranged on the runner protecting hood on the described collar;
Described runner protecting hood is fixedly remained on holding member on the described collar,
It is characterized in that,
Described runner protecting hood has the installation portion that is arranged on the annular on the described collar,
The holding section operating portion that described holding member has the holding section that engages with described installation portion and described holding section is moved,
Described holding section operating portion can make the holding section move and switch between the fastening state that fastens in described installation portion and described holding section and described installation portion and engaging disarm state that engaging of described holding section is disengaged,
And, described holding section operating portion leave the 1st straight line and with the 2nd straight line of the 1st straight line parallel on carry out traveling priority, described the 1st straight line refers on prescribed direction the straight line by the center of described installation portion.
2. grinder according to claim 1, is characterized in that,
Described holding section engages with the outer end of described installation portion, and this outer end is positioned on the straight line of the central area that is parallel to described the 1st straight line and passes through described installation portion.
3. grinder according to claim 1 and 2, is characterized in that,
Described holding section is to the medial movement of described installation portion and remove and the engaging of described installation portion.
4. the described grinder of any one according to claim 1 ~ 3, is characterized in that,
Described holding section is made of a plurality of engaging inscape section with the engaging of described installation portion.
5. grinder according to claim 1 and 2, is characterized in that,
Described holding section is made of a plurality of engaging inscape section with the engaging of described installation portion,
At least one described engaging inscape section removes to described installation portion medial movement and the engaging of described installation portion,
Remaining described engaging key element section is to the outer side shifting of described installation portion and remove and the engaging of described installation portion.
6. the described grinder of any one according to claim 1 ~ 5, is characterized in that,
Described holding section operating portion is configured in, with the corresponding tangent line of the tangent line zone of the described installation portion of described the 1st straight line parallel, and this holding section operating portion is parallel to this and tangentially carries out traveling priority.
7. the described grinder of any one according to claim 4 ~ 6, is characterized in that,
Described a plurality of engaging inscape section is with respect to the Central Symmetry of described installation portion.
8. the described grinder of any one according to claim 4 ~ 7, is characterized in that,
Described runner protecting hood can be by with respect to the rotation of the described collar and optionally be configured on a plurality of different turned positions, and described runner protecting hood can be arranged on the described collar and be arranged on one that selects from described a plurality of turned positions,
Described installation portion has a plurality of sections that are stuck that engage with described holding section,
Described a plurality of be stuck section with week of the annular section that uniformly-spaced is formed on described installation portion upwards,
Described a plurality of engaging inscape section engages with described a plurality of of being stuck in section corresponding to selected described turned position.
9. the described grinder of any one according to claim 1 ~ 8, is characterized in that,
Described holding member has the loading component that described holding section operating portion is loaded,
Described holding section operating portion moves by the active force that overcomes described loading component and removes engaging of described installation portion and described holding section.
10. the described grinder of any one according to claim 1 ~ 9, is characterized in that,
Described holding member has the inclination movement limiting portion that the inclination that engages with described installation portion and limit described runner protecting hood is moved.
11. according to claim 1 ~ 10, the described grinder of any one, is characterized in that,
Described installation portion has a plurality of sections that are stuck that engage with described holding section,
Also have the 1st elastomeric element that engages with the described section of being stuck,
Described the 1st elastomeric element loads described installation portion on the direction parallel with the central axis of described installation portion,
Described installation portion can upwards rotate in week with respect to the described collar, by the active force of described the 1st elastomeric element, described installation portion is connected on the described collar.
12. grinder according to claim 11 is characterized in that,
Also have the 2nd elastomeric element that by described holding member, described installation portion is loaded on the direction parallel with the central axis of described installation portion,
Active force by described the 2nd elastomeric element is connected on the described collar described installation portion.
13. grinder according to claim 12 is characterized in that,
Described the 1st elastomeric element and described the 2nd elastomeric element are integrally formed.
14. according to claim 1 ~ 13, the described grinder of any one, is characterized in that,
Described collar assigned position in the axial direction is formed with recess,
Described holding member engages with described recess makes this holding member be prevented from described movement on axially, but allow this holding member the described collar radially on move.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011273302 | 2011-12-14 | ||
| JP2011-273302 | 2011-12-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103158071A true CN103158071A (en) | 2013-06-19 |
| CN103158071B CN103158071B (en) | 2016-03-09 |
Family
ID=48581881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210395434.7A Active CN103158071B (en) | 2011-12-14 | 2012-10-17 | Grinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103158071B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109093495A (en) * | 2017-06-20 | 2018-12-28 | 株式会社牧田 | Grinder |
| CN112440210A (en) * | 2019-08-28 | 2021-03-05 | 车王电子股份有限公司 | Protective device of electric tool |
| US11712779B2 (en) | 2019-08-22 | 2023-08-01 | Mobiletron Electronics Co., Ltd. | Protective device of power tool |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1618990A1 (en) * | 2004-07-16 | 2006-01-25 | Narex Ceska Lipa a.s. | Power tool, especially angle grinder |
| DE102007052685A1 (en) * | 2007-11-05 | 2009-05-07 | Robert Bosch Gmbh | Hand tool |
| CN101607397A (en) * | 2008-06-20 | 2009-12-23 | 罗伯特·博世有限公司 | Toolroom machine, particularly hand held power machine |
| CN101623850A (en) * | 2008-07-11 | 2010-01-13 | 罗伯特·博世有限公司 | Protective guard rotation-locking device |
| DE102009024427A1 (en) * | 2009-06-09 | 2010-12-16 | Metabowerke Gmbh | Protective casing for accommodating drive shaft of angle grinder, has adjusting ring rotatable in peripheral direction opposite to collar, so that ring is adjusted between engaging position and non-engaging position |
| CN101977734A (en) * | 2008-03-18 | 2011-02-16 | 罗伯特·博世有限公司 | Hand-held machine tool, in particular hand-guided grinding machine |
| DE102009028404A1 (en) * | 2009-08-10 | 2011-02-17 | Robert Bosch Gmbh | Machine tool with a protective hood |
| CN202021517U (en) * | 2011-03-07 | 2011-11-02 | 浙江皇冠电动工具制造有限公司 | Drop prevention structure for screw component of protective cover of angle grinder |
-
2012
- 2012-10-17 CN CN201210395434.7A patent/CN103158071B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1618990A1 (en) * | 2004-07-16 | 2006-01-25 | Narex Ceska Lipa a.s. | Power tool, especially angle grinder |
| DE102007052685A1 (en) * | 2007-11-05 | 2009-05-07 | Robert Bosch Gmbh | Hand tool |
| CN101977734A (en) * | 2008-03-18 | 2011-02-16 | 罗伯特·博世有限公司 | Hand-held machine tool, in particular hand-guided grinding machine |
| CN101607397A (en) * | 2008-06-20 | 2009-12-23 | 罗伯特·博世有限公司 | Toolroom machine, particularly hand held power machine |
| CN101623850A (en) * | 2008-07-11 | 2010-01-13 | 罗伯特·博世有限公司 | Protective guard rotation-locking device |
| DE102009024427A1 (en) * | 2009-06-09 | 2010-12-16 | Metabowerke Gmbh | Protective casing for accommodating drive shaft of angle grinder, has adjusting ring rotatable in peripheral direction opposite to collar, so that ring is adjusted between engaging position and non-engaging position |
| DE102009028404A1 (en) * | 2009-08-10 | 2011-02-17 | Robert Bosch Gmbh | Machine tool with a protective hood |
| CN202021517U (en) * | 2011-03-07 | 2011-11-02 | 浙江皇冠电动工具制造有限公司 | Drop prevention structure for screw component of protective cover of angle grinder |
Cited By (5)
| 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 |
| US11712779B2 (en) | 2019-08-22 | 2023-08-01 | Mobiletron Electronics Co., Ltd. | Protective device of power tool |
| CN112440210A (en) * | 2019-08-28 | 2021-03-05 | 车王电子股份有限公司 | Protective device of electric tool |
| CN112440210B (en) * | 2019-08-28 | 2022-04-08 | 车王电子股份有限公司 | Protective device of electric tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103158071B (en) | 2016-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20080280549A1 (en) | Guard Attachment Device | |
| CN101490635B (en) | Control knob with safety feature | |
| US7988538B2 (en) | Large angle grinder | |
| CN101657297B (en) | Machine tool, particularly hand machine tool | |
| CN201711848U (en) | Motive power tool | |
| US20080263874A1 (en) | Rotary Cutter for Mower | |
| CN103158071A (en) | Grinder | |
| EP3081336B1 (en) | Guard assembly for a power tool | |
| JP5959421B2 (en) | Grinder | |
| EP2452785A2 (en) | Rotary tool | |
| US11938587B2 (en) | Angle grinder and shield assembly thereof | |
| CN203266590U (en) | Handheld machine tool with rotary drum type tool replacement box | |
| US20230219151A1 (en) | Electric working machine | |
| CN104308259B (en) | Handheld cut-in type electric circular saw | |
| US9789627B2 (en) | Power cutting tool having a guard unit | |
| CN102294641A (en) | Integrated mechanism for changing grinding wheel and rotating protective cover in angle grinding electric tool | |
| CN112770871A (en) | Safety brake device | |
| CN209078476U (en) | It is convenient for changing the electric mill of bistrique | |
| SE528637C2 (en) | Drive device for a twin cutter with counter-rotating blades | |
| EP2723541B1 (en) | Tool for safely disassembling and reassembling blades for slicing machines | |
| EP2837278A2 (en) | A safety switch mechanism for gardening tool | |
| CN202114566U (en) | Power tool | |
| US20110297767A1 (en) | One-way driving mechanism for the paper removal device of a shredder | |
| CN110571088B (en) | Protective grounding switch applied to high-altitude high-voltage gas tank | |
| CN202367597U (en) | Sanding tool protecting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |