CN202219457U - Quick-change grinding wheel guard and improved structure for connecting quick-change grinding wheel guard with front cover - Google Patents
Quick-change grinding wheel guard and improved structure for connecting quick-change grinding wheel guard with front cover Download PDFInfo
- Publication number
- CN202219457U CN202219457U CN2011201997029U CN201120199702U CN202219457U CN 202219457 U CN202219457 U CN 202219457U CN 2011201997029 U CN2011201997029 U CN 2011201997029U CN 201120199702 U CN201120199702 U CN 201120199702U CN 202219457 U CN202219457 U CN 202219457U
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- China
- Prior art keywords
- protecgulum
- circle
- wheel guard
- tightly
- holding
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Abstract
The utility model discloses a quick-change grinding wheel guard, which comprises a guard body and a holding ring. The holding ring is arranged in the middle of the guard body and connected with a front cover of an electric grinding wheel, holding force for holding the front cover is adjusted by the aid of two connecting ends of the holding ring via a threaded fastener and a nut which is fittingly connected with the head of the threaded fastener in a threaded manner, a locking structure is disposed on the threaded fastener, and the holding force, which is used for holding the front cover, of the holding ring is reinforced by the locking structure. In addition, the utility model discloses an improved structure for connecting the quick-change grinding wheel guard with the front cover. The position of the nut on the threaded fastener is adjusted, and the guard body can be installed or detached extremely conveniently by means of rotating a driving lever. Besides, the grinding wheel guard cannot loose or rotate under impact, and accordingly a grinding wheel sheet is prevented from flying out to injure people or damage equipment.
Description
Technical field
The utility model relates to electric tool, and particularly the syndeton of a kind of quick change wheel guard of electric angle grinder and quick change wheel guard and protecgulum is improved.
Background technology
In electric angle grinder; Prevent that the emery wheel explosion from injuring personnel or equipment and be to link together between the protecgulum of the wheel guard that shields and electric angle grinder through the pretension frictional force between protecgulum outer ring surface and the wheel guard inner ring surface; The major defect of this connected mode is in use, because workman's quality difference and operating mode differ, causes the collision of wheel guard and other objects easily; Spin thereby cause wheel guard to become flexible, even come off.In actual use; The workman often takes down wheel guard in advance and directly uses, thereby stay inevitable potential safety hazard for fear of adjustment, installation trouble that wheel guard comes off and causes; Fragment flies at a high speed after the emery wheel explosion, very easily causes direct injury perhaps equipment to be damaged to the workman.Wheel guard must be installed and guarantee that wheel guard firmly is connected on the housing when therefore requiring electric angle grinder to use.
On the other hand; If having guaranteed wheel guard is connected with the firm of protecgulum; At the emery wheel of emery wheel through need more renewing after the service wear; At this moment just require and fast wheel guard to be pulled down the replacing emery wheel, so the fixed connection structure between wheel guard and the protecgulum can not be too loaded down with trivial details, requires easy accessibility.
The utility model content
The utility model problem to be solved just provides a kind of quick change wheel guard simple in structure and the syndeton of quick change wheel guard and protecgulum is improved; Convenient to disassembly; Save the time of changing emery wheel; And the installation secure, the wheel guard after effectively preventing to fix spins or comes off, and the assurance workman's is safe in utilization.
In order to solve the problems of the technologies described above; The utility model adopts following technical scheme: a kind of quick change wheel guard; Comprise cover body and be located at armful circle that the cover body middle part is connected with the protecgulum of electric angle grinder; Two links embracing circle are regulated the power of holding tightly of holding protecgulum tightly through threaded fastener and the nut that is connected with the threaded engagement of screw fastener head, and it is characterized in that: said threaded fastener is provided with strengthens embracing a locking mechanism that encloses the power of holding tightly of holding protecgulum tightly.
Further; Said locking mechanism is a driving lever; Driving lever comprises through the bearing pin switching change-over terminal and the force side that supplies the user to stir at the threaded fastener afterbody, the axis of bearing pin and the axis normal of threaded fastener, thus driving lever turns to and makes bearing pin make to embrace to enclose and hold protecgulum tightly away from embracing circle when embracing circle.
Further, be provided with elastomeric pad between the link of the afterbody of said threaded fastener and armful circle.
In addition, the syndeton that the invention also discloses above-mentioned quick change wheel guard and protecgulum is improved, and it is characterized in that: comprise being located to embrace preventing to embrace circle between circle and the protecgulum and holding behind the protecgulum anti-skid structure that protecgulum relatively rotates tightly.
Further, said anti-skid structure comprises the some grooves that axially are located on the protecgulum outer ring surface and at least one convexity that is located on armful circle inner ring surface, and after an armful circle was held protecgulum tightly, convexity was stuck in the groove.
Further, said some grooves are evenly distributed on the protecgulum outer ring surface, in twos arc transition between the groove.
Further, the syndeton of above-mentioned quick change wheel guard and protecgulum is improved and also to be comprised being located to embrace to be provided with between circle and the protecgulum and prevent to embrace circle and hold behind the protecgulum the axially movable position limiting structure of protecgulum relatively tightly.
Further, said position limiting structure comprises cannelure that is located on the protecgulum outer ring surface and the projection that is located on armful circle inner ring surface, and after an armful circle was installed on the protecgulum, projection was stuck in the cannelure.
Further, said upside of the ring groove is provided with axial opening, and the size of opening is corresponding with projection.Rotate to embrace circle and make the corresponding opening of projection, move axially and embrace circle and make projection get into cannelure or from cannelure, break away from, save manpower and go to open and embrace circle and make projection can get into cannelure fast or break away from cannelure.
After adopting technique scheme, the utlity model has following advantage: the position of adjusting nut on threaded fastener, rotating lever just can be realized the cover body installation or removal, and is very convenient; Anti-skid structure can not become flexible wheel guard and spin when wheel guard be hit, thereby prevents grinding wheel from flying out and people or equipment are damaged; Position limiting structure can prevent that wheel guard is axially displaced or come off.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is the explosive view of a kind of embodiment of the utility model;
Fig. 2 is for embracing the structural representation of circle;
Fig. 3 is the structural representation after the assembling embodiment illustrated in fig. 1.
The specific embodiment
The structural representation of a kind of embodiment of the utility model shown in Fig. 1 to 3; A kind of quick change wheel guard; Comprise cover body 2 and be located at armful circle 3 that the cover body middle part is connected with the protecgulum 1 of electric angle grinder; Two links 31 embracing circle are regulated the power of holding tightly of holding protecgulum tightly through threaded fastener 4 and the nut 41 that is connected with the threaded engagement of screw fastener head, and said threaded fastener is provided with strengthens embracing a locking mechanism that encloses the power of holding tightly of holding protecgulum tightly.Said locking mechanism is a driving lever 5; Driving lever comprises through the change-over terminal 52 and the force side 53 that supply user stir of bearing pin 51 switchings at the threaded fastener afterbody; The axis of bearing pin and the axis normal of threaded fastener, thus driving lever turns to and makes bearing pin make and embrace circle and hold protecgulum tightly away from embracing circle when embracing circle.Be provided with elastomeric pad 6 between the link of the afterbody of threaded fastener and armful circle; Can make like this to embrace to enclose and be in the elasticity locking state with protecgulum; Traditional nonelastic pad is caused the Internal Hole Deformation contraction of nonelastic pad to diminish by the extruding of driving lever change-over terminal easily; Because threaded fastener passes the endoporus of nonelastic pad, causes regulating wheel guard so threaded fastener is easy to be stuck.In the present embodiment, threaded fastener is bolt or double-screw bolt.
The utility model discloses the syndeton improvement of a kind of above-mentioned quick change wheel guard and protecgulum in addition; Comprise being located to embrace and prevent to embrace circle between circle and the protecgulum and hold behind the protecgulum anti-skid structure that protecgulum relatively rotates tightly; Said anti-skid structure comprises the some grooves 11 that axially are located on the protecgulum outer ring surface and at least one convexity 32 that is located on armful circle inner ring surface, and after an armful circle was held protecgulum tightly, convexity was stuck in the groove; Some grooves are evenly distributed on the protecgulum outer ring surface, in twos arc transition between the groove.When wheel guard is hit, wheel guard can not be become flexible spin like this, thereby prevent grinding wheel from flying out and people or equipment are damaged.Also comprise in addition being located to embrace and prevent to embrace circle between circle and the protecgulum and hold behind the protecgulum the axially movable position limiting structure of protecgulum relatively tightly; Said position limiting structure comprises cannelure 12 that is located on the protecgulum outer ring surface and the projection 33 that is located on armful circle inner ring surface; After embracing circle and being installed on the protecgulum, projection is stuck in the cannelure.Can prevent that like this wheel guard is axially displaced or come off that be provided with axial opening 13 at upside of the ring groove, the size of opening is corresponding with projection.Rotate to embrace circle like this and make the corresponding opening of projection, move axially and embrace circle and make projection get into cannelure or from cannelure, break away from, needn't open and embrace circle, save manpower, make projection can get into cannelure fast or break away from cannelure.
The specific operation process of the foregoing description is following:
1, assembling.Open driving lever, let embrace to enclose and unclamp, wheel guard is covered square shaft to packing in the past; Make projection corresponding with opening and get in the cannelure, then wheel guard is rotated counterclockwise assigned address, a convexity of embracing on the circle is stuck in the groove of protecgulum; The driving lever that closes makes and embraces circle and hold protecgulum tightly, and assembling is accomplished.
2, regulate.Open driving lever, let embrace to enclose and unclamp, wheel guard can be rotated; Wheel guard is rotated to assigned address; The convexity of embracing on the circle makes wheel guard have shift feeling when rotated with the groove of protecgulum, and a convexity of embracing on enclosing is stuck in the groove of protecgulum, and driving lever closes; Make to embrace to enclose and hold protecgulum tightly, can realize regulating wheel guard.
3, remove.Open driving lever, let embrace to enclose and unclamp, wheel guard is rotated clockwise to assigned address, make projection corresponding, axially take out wheel guard and get final product with opening.
Except that above-mentioned preferred embodiment; The utility model also has other embodiment; Those skilled in the art can make various changes and distortion according to the utility model, only otherwise break away from the spirit of the utility model, all should belong to the defined scope of the utility model accompanying claims.
Claims (9)
1. quick change wheel guard; Comprise cover body (2) and be located at armful circle (3) that the cover body middle part is connected with the protecgulum (1) of electric angle grinder; Two links (31) of embracing circle are regulated the power of holding tightly of holding protecgulum tightly through threaded fastener (4) and the nut (41) that is connected with the threaded engagement of screw fastener head, it is characterized in that: said threaded fastener is provided with to strengthen armful enclosing holds the locking mechanism of power tightly when holding protecgulum tightly.
2. a kind of quick change wheel guard according to claim 1; It is characterized in that: said locking mechanism is driving lever (5); Driving lever comprises through bearing pin (51) switching in the change-over terminal (52) of threaded fastener afterbody and the force side (53) that supplies the user to stir; The axis of bearing pin and the axis normal of threaded fastener, thus driving lever turns to and makes bearing pin make and embrace circle and hold protecgulum tightly away from embracing circle when embracing circle.
3. a kind of quick change wheel guard according to claim 1 and 2 is characterized in that: be provided with elastomeric pad (6) between the link of the afterbody of said threaded fastener and armful circle.
4. the syndeton of quick change wheel guard as claimed in claim 1 and protecgulum is improved, and it is characterized in that: comprise being located to embrace preventing to embrace circle between circle and the protecgulum and holding behind the protecgulum anti-skid structure that protecgulum relatively rotates tightly.
5. the syndeton of a kind of quick change wheel guard according to claim 4 and protecgulum is improved; It is characterized in that: said anti-skid structure comprises the some grooves (11) that axially are located on the protecgulum outer ring surface and is located at least one convexity (32) of embracing on the circle inner ring surface; After embracing circle and holding protecgulum tightly, convexity is stuck in the groove.
6. the syndeton of a kind of quick change wheel guard according to claim 5 and protecgulum is improved, and it is characterized in that: said some grooves are evenly distributed on the protecgulum outer ring surface, in twos arc transition between the groove.
7. the syndeton of a kind of quick change wheel guard according to claim 4 and protecgulum is improved, and it is characterized in that: also comprise being located to embrace preventing to embrace circle between circle and the protecgulum and holding behind the protecgulum the axially movable position limiting structure of protecgulum relatively tightly.
8. the syndeton of a kind of quick change wheel guard according to claim 7 and protecgulum is improved; It is characterized in that: said position limiting structure comprises the cannelure (12) that is located on the protecgulum outer ring surface and is located at the projection of embracing on the circle inner ring surface (33); After embracing circle and being installed on the protecgulum, projection is stuck in the cannelure.
9. the syndeton of a kind of quick change wheel guard according to claim 8 and protecgulum is improved, and it is characterized in that: said upside of the ring groove is provided with axial opening (13), and the size of opening is corresponding with projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201997029U CN202219457U (en) | 2011-06-14 | 2011-06-14 | Quick-change grinding wheel guard and improved structure for connecting quick-change grinding wheel guard with front cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201997029U CN202219457U (en) | 2011-06-14 | 2011-06-14 | Quick-change grinding wheel guard and improved structure for connecting quick-change grinding wheel guard with front cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202219457U true CN202219457U (en) | 2012-05-16 |
Family
ID=46041494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201997029U Expired - Lifetime CN202219457U (en) | 2011-06-14 | 2011-06-14 | Quick-change grinding wheel guard and improved structure for connecting quick-change grinding wheel guard with front cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202219457U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107263325A (en) * | 2017-07-25 | 2017-10-20 | 徐州给力磁业有限公司 | A kind of containment vessel for motor emery wheel |
| CN112313036A (en) * | 2018-08-01 | 2021-02-02 | 株式会社牧田 | Grinding wheel cover of electric tool |
-
2011
- 2011-06-14 CN CN2011201997029U patent/CN202219457U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107263325A (en) * | 2017-07-25 | 2017-10-20 | 徐州给力磁业有限公司 | A kind of containment vessel for motor emery wheel |
| CN107263325B (en) * | 2017-07-25 | 2023-10-27 | 徐州给力磁业有限公司 | Protective shell for motor grinding wheel |
| CN112313036A (en) * | 2018-08-01 | 2021-02-02 | 株式会社牧田 | Grinding wheel cover of electric tool |
| CN112313036B (en) * | 2018-08-01 | 2022-08-16 | 株式会社牧田 | Grinding wheel cover of electric tool |
| JP7467031B2 (en) | 2018-08-01 | 2024-04-15 | 株式会社マキタ | Power Tool Wheel Covers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120516 |
|
| CX01 | Expiry of patent term |