CN202846314U - Protective cover assembly of angle grinder - Google Patents
Protective cover assembly of angle grinder Download PDFInfo
- Publication number
- CN202846314U CN202846314U CN 201220561659 CN201220561659U CN202846314U CN 202846314 U CN202846314 U CN 202846314U CN 201220561659 CN201220561659 CN 201220561659 CN 201220561659 U CN201220561659 U CN 201220561659U CN 202846314 U CN202846314 U CN 202846314U
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- protective cover
- cover assembly
- bolt
- grinding machine
- nut
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Abstract
The utility model provides a protective cover assembly of an angle grinder, and belongs to the technical field of electrical tools. The protective cover assembly of the angle grinder solves the problem that an existing angle grinder is unsuitable for novel machinery standards. The protective cover assembly of the angle grinder comprises a protective cover body, a ringent annular anchor ear arranged on the protective cover body, a fastening mechanism used for adjusting a size of an opening is arranged on the opening of the anchor ear, and regulating parts are formed by buckling two ends of the anchor ear. The fastening mechanism comprises a bolt and a nut. The bolt is in threaded connection with the nut after the bolt passes through two regulating parts. A slot is arranged on the top of rod of the bolt. The slot portion is provided with a retainer ring in a clamping mode. The retainer ring and the head of the bolt are respectively arranged on two lateral sides of the nut. The bolt is additionally provided with the detachable retainer ring. When the bolt is loosened caused by rotating or demounting the protective cover body, the retainer ring can prevent the nut from dropping, and therefore the bolt is kept on the protective cover body. The protective cover assembly of the angle grinder conforms to the novel machinery standards, and safety is ensured.
Description
Technical field
The utility model belongs to the electric tool technical field, relates to a kind of angle grinding machine, particularly the protective cover assembly of a kind of angle grinding machine.
Background technology
In numerous electric tools, the electric angle grinder purposes is quite extensive, except the overlap of the section bar, tubing or the reconditioning workpiece that are used for cutting stainless steel, steel alloy, common straightcarbon steel, burr, weld seam, with the major diameter stainless steel after the plasma cutting, change special-purpose cutting blade and also can cut the construction materials such as brick, stone, asbestos corrugated plating; Change wire wheel brush, emery disc and can be used for rust cleaning, sanding metal surface; Change the surface that polishing wheel then can polish various materials.
In order to prevent that the chip under grinding wheel, cutting blade explosion and the mill from flying around, the injury operator, all with protective cover, protective cover is generally semi-circular shape on the grinding machine of angle, chip just is subject to stopping and flies out from half other circular direction, so just guaranteed operator's safety.In order to mount and dismount conveniently, all can be provided with the anchor ear of an opening on the protective cover, anchor ear is enclosed within on the end cover of reduction box, and passes through the aperture that a screw is regulated anchor ear, and the banding end cover of reduction box is finished the installation of protective cover; During dismounting, unclamp screw and get final product, but screw can break away from protective cover.
In order to improve security, European Union rises on December 30th, 2009 and comes into effect new machinery standard, wherein clearly proposed new demand in the standard of diagonal angle mill type electric tool: when rotating or dismantle protective cover, the screw on the protective cover and other accessories cannot break away from the gear box cover of shield body or machine.China has also implemented this standard in 2011; and in safety standard IEC60745-2-3:2011 " the safe second portion of hand held electric tool: the special use of abrasive machine, polishing machine and disc sander requires ", increased clause newly: as the part of link of protection; according to command request; after wheel guard was removed, securing member must remain on guard shield or the instrument.
Obviously, the protective hood of grinding wheel assembly structure on the conventional angular grinding machine must be made corresponding improvement.
Summary of the invention
The purpose of this utility model is the existing the problems referred to above of shielded closure mechanism for existing angle grinding machine, and has proposed a kind of rotating or during the dismounting protective cover, the protective cover assembly that screw can not come off.
The purpose of this utility model can realize by following technical proposal: the protective cover assembly of a kind of angle grinding machine, comprise shield body, shield body is provided with the annular anchor ear of an opening, the opening part of anchor ear is provided with the retention mechanism of regulating openings of sizes, all form adjusting portion after the two ends bending of anchor ear, described retention mechanism comprises screw and nut, screw is threaded with nut after passing successively above-mentioned two adjusting portions, it is characterized in that, offer draw-in groove in the bar section of described screw, the draw-in groove place is arranged with a back-up ring, and the head of described back-up ring and screw is separately positioned on the both sides of nut.Nut can be fixed together with anchor ear, also can not be connected
In the protective cover assembly of above-mentioned a kind of angle grinding machine, the bar of described screw partly is thread segment and smooth section, and above-mentioned draw-in groove is opened on the smooth section.The effect of smooth section is to allow the thread connection of screw disengagement and nut.
In the protective cover assembly of above-mentioned a kind of angle grinding machine, described back-up ring is " C " shape.The interior edge of back-up ring is fastened in the draw-in groove, and main part plays the effect that stops screw cap-falling.
In the protective cover assembly of above-mentioned a kind of angle grinding machine, the inboard of described anchor ear is provided with spacing salient point, offers the locating notch corresponding with above-mentioned restriction salient point on the end cover of reduction box of angle grinding machine.
In the protective cover assembly of above-mentioned a kind of angle grinding machine, described shield body is provided with spacing salient point, offers the locating notch corresponding with above-mentioned restriction salient point on the end cover of reduction box of angle grinding machine.Spacing salient point is aimed at locating notch, plays the location alignment effect when shield body is installed, the convenient installation; Then can play position-limiting action after the installation, prevent that shield body from rotating when the grinding wheel accidental explosion is cracked, operating personnel are shielded.
Compared with prior art, set up dismountable back-up ring on the screw of this protective cover assembly, when unclamping screw because rotating or dismantle shield body, back-up ring can block nut and not come off, thereby screw is remained on the shield body, meet new machinery standard, security is guaranteed.
Description of drawings
Fig. 1 is that the utility model is applied in the structural representation on the grinding machine of angle.
Fig. 2 is the structural representation of this protective cover assembly.
Fig. 3 is the structural representation of retention mechanism.
Fig. 4 is the structural representation of back-up ring.
Among the figure, 1, end cover of reduction box; 2, shield body; 3, anchor ear; 31, canned paragraph; 32, active segment; 33, adjusting portion; 4, screw; 41, end cap; 42, bar section; 42a, draw-in groove; 5, nut; 6, back-up ring.
The specific embodiment
Below be specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As shown in Figure 1, the protective cover assembly of this angle grinding machine is arranged on the end cover of reduction box 1 of angle grinding machine, comprises semicircular shield body 2, and shield body 2 is provided with the annular anchor ear 3 of an opening, and anchor ear 3 is enclosed within on the end cover of reduction box 1.
Such as Fig. 2, Fig. 3 and shown in Figure 4, anchor ear 3 is divided into canned paragraph 31 and active segment 32 two parts, canned paragraph 31 is connected with shield body 2, active segment 32 is protruding, one end of canned paragraph 31 and the docking of active segment 32 1 ends, both other ends bend rear formation adjusting portion 33 laterally, a screw 4 passes above-mentioned two adjusting portions 33 successively, the end cap 41 of screw 4 is stayed a side of two adjusting portions 33, screw 4 passes the nut 5 that has been threaded in the bar section 42 of adjusting portion 33, and offering a draw-in groove 42a in the outer end of bar section 42, draw-in groove 42a place is arranged with a C shape back-up ring 6.
During installation, first shield body 2 is set on the end cover of reduction box 1 and rotates as required and export to correct position, to regulate the direction that flies out of chip, after regulating screw 4 is passed and screws nut 5, make anchor ear 3 lock rings on end cover of reduction box 1, the interior edge with back-up ring 6 is stuck in the draw-in groove 42a at last.If need to pull down shield body 2 or readjust the Way out of shield body 2, the nut 5 of just outwarding winding, anchor ear 3 is unclamped, back-up ring 6 can block nut 5 and not come off, thereby make screw 4 can not break away from shield body 2, meet new machinery standard, security is guaranteed, and it is all more convenient that regulate or pull down shield body 2 this moment.
Security in easy for installation and the use procedure can arrange spacing salient point in anchor ear 3 inboards or shield body 2, and offer the locating notch corresponding with above-mentioned restriction salient point at end cover of reduction box 1, and spacing salient point is stuck in the locating notch.
Should be appreciated that, in claims of the present utility model, specification, all " comprising ... " all are interpreted as open implication, and namely its implication is equal to " containing at least ... ", and should not be construed as enclosed implication, namely its implication should not be construed " only comprising ... ".
Specific embodiment described herein only is to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (5)
1. the protective cover assembly of an angle grinding machine, comprise shield body (2), shield body (2) is provided with the annular anchor ear (3) of an opening, the opening part of anchor ear (3) is provided with the retention mechanism of regulating openings of sizes, all form adjusting portion (33) after the two ends bending of anchor ear (3), described retention mechanism comprises screw (4) and nut (5), screw (4) is threaded with nut (5) after passing successively above-mentioned two adjusting portions (33), it is characterized in that, offer draw-in groove (42a) in the bar section (42) of described screw (4), draw-in groove (42a) locates to be arranged with a back-up ring (6), and the head of described back-up ring (6) and screw (4) is separately positioned on the both sides of nut (5).
2. the protective cover assembly of a kind of angle according to claim 1 grinding machine is characterized in that the bar section (42) of described screw (4) is divided into thread segment and smooth section, and above-mentioned draw-in groove (42a) is opened on the smooth section.
3. the protective cover assembly of a kind of angle according to claim 1 and 2 grinding machine is characterized in that described back-up ring (6) is " C " shape.
4. the protective cover assembly of a kind of angle according to claim 1 and 2 grinding machine is characterized in that the inboard of described anchor ear (3) is provided with spacing salient point, offers the locating notch corresponding with above-mentioned restriction salient point on the end cover of reduction box of angle grinding machine (1).
5. the protective cover assembly of a kind of angle according to claim 1 and 2 grinding machine is characterized in that described shield body (2) is provided with spacing salient point, offers the locating notch corresponding with above-mentioned restriction salient point on the end cover of reduction box of angle grinding machine (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220561659 CN202846314U (en) | 2012-10-29 | 2012-10-29 | Protective cover assembly of angle grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220561659 CN202846314U (en) | 2012-10-29 | 2012-10-29 | Protective cover assembly of angle grinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202846314U true CN202846314U (en) | 2013-04-03 |
Family
ID=47977550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220561659 Expired - Fee Related CN202846314U (en) | 2012-10-29 | 2012-10-29 | Protective cover assembly of angle grinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202846314U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109515621A (en) * | 2018-10-10 | 2019-03-26 | 中船澄西船舶修造有限公司 | A kind of manhole waterproof tooling |
| CN114728395A (en) * | 2019-08-16 | 2022-07-08 | 博世电动工具（中国）有限公司 | Angle grinder and protective cover assembly thereof |
-
2012
- 2012-10-29 CN CN 201220561659 patent/CN202846314U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109515621A (en) * | 2018-10-10 | 2019-03-26 | 中船澄西船舶修造有限公司 | A kind of manhole waterproof tooling |
| CN109515621B (en) * | 2018-10-10 | 2020-08-04 | 中船澄西船舶修造有限公司 | Manhole waterproof tool |
| CN114728395A (en) * | 2019-08-16 | 2022-07-08 | 博世电动工具（中国）有限公司 | Angle grinder and protective cover assembly thereof |
| CN114728395B (en) * | 2019-08-16 | 2023-09-15 | 博世电动工具（中国）有限公司 | Angle grinder and protective cover assembly thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20181029 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |