CN101858571A - Foolproof limiting structure - Google Patents

Foolproof limiting structure Download PDF

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Publication number
CN101858571A
CN101858571A CN201010168305A CN201010168305A CN101858571A CN 101858571 A CN101858571 A CN 101858571A CN 201010168305 A CN201010168305 A CN 201010168305A CN 201010168305 A CN201010168305 A CN 201010168305A CN 101858571 A CN101858571 A CN 101858571A
Authority
CN
China
Prior art keywords
boss
inwall
axis
knob
knob spare
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
Application number
CN201010168305A
Other languages
Chinese (zh)
Other versions
CN101858571B (en
Inventor
周明杰
潘跃山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oceans King Lighting Science and Technology Co Ltd
Shenzhen Oceans King Lighting Science and Technology Co Ltd
Shenzhen Oceans King Lighting Engineering Co Ltd
Original Assignee
Oceans King Lighting Science and Technology Co Ltd
Shenzhen Oceans King Lighting Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Oceans King Lighting Science and Technology Co Ltd, Shenzhen Oceans King Lighting Engineering Co Ltd filed Critical Oceans King Lighting Science and Technology Co Ltd
Priority to CN2010101683055A priority Critical patent/CN101858571B/en
Publication of CN101858571A publication Critical patent/CN101858571A/en
Application granted granted Critical
Publication of CN101858571B publication Critical patent/CN101858571B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention relates to a foolproof limiting structure which comprises a fixing element and a knob element, wherein the fixing element is provided with an installation hole; the knob element is installed in the installation hole and can rotate around the axis of the installation hole; an inner wall boss and an outer wall boss which are both perpendicular to the axis and extend into an arc along the circumference direction are respectively arranged on the opposite inner wall and outer wall of the installation hole and the knob element, and the distance between the outer wall boss and the opening end surface of the installation hole is larger than that of the inner wall boss so that the outer wall boss and the inner wall boss are staggered along the axis direction; a limiting groove which is perpendicular to the axis and extends along the circumference direction is arranged on the opening end surface of the installation hole; and a limiting convex block is arranged on the knob element, rotates around the circumference of the axis in the limiting groove, and drives the outer wall boss and the inner wall boss to laminate or stagger. A rotating angle of the knob element is limited by the limiting function of the limiting groove on the limiting convex block, thereby realizing the adjustment of different laminating areas of the inner wall boss and the outer wall boss.

Description

Foolproof limiting structure
Technical field
The present invention relates to foolproof limiting structure, more particularly, relate to a kind of foolproof limiting structure that is used for explosion-proof lamp.
Background technology
For explosion-proof lamp, in its lamp and lamp must carry out the sealing of sufficient intensity between outer, to prevent the leakage or the infiltration of inside and outside pernicious gas.But because the needs of dismounting and maintenance, the inside that is used to isolate lamp can not be shut with outside interface, and commonly used to knockdown pieces, be assembled on the lamp body by rotation as knob spare.Have staggered boss on the installing hole hole wall of installation knob spare on the outer surface of knob spare and the lamp body, by rotation knob spare, can make the boss on the two be built up overlapping, the overlapping area of two boss has promptly determined the sealing intensity of knob spare with lamp body.
Because the overlapping area of two boss is relevant with respect to the anglec of rotation of lamp body with knob spare, but just show the anglec of rotation in the prior art by the mark on the lamp body, the relative rotation angle of knob spare and lamp body is not done structural actual the qualification, therefore do not have fool proof.Operator's possibility knob excessively influences the life-span of knob spare.
Summary of the invention
The technical problem to be solved in the present invention is, thereby does the defective that actual qualification does not have fool proof at the anglec of rotation of the knob spare of prior art, provides a kind of anglec of rotation limited foolproof limiting structure.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of foolproof limiting structure, comprise fixture and be contained in the described installing hole and the knob spare that can rotate around the axis of described installing hole with installing hole, be respectively arranged with equal edge on the inwall of the described installing hole that is oppositely arranged and the outer wall of knob spare and extend into the inwall boss and the outer wall boss of arc perpendicular to the circumferencial direction of described axis, and described outer wall boss makes described outer wall boss and inwall boss stagger along described axis direction from the distance of described installing hole open end greater than described inwall boss, the open end of described installing hole is provided with the limited impression that extends along the circumferencial direction perpendicular to described axis, described knob spare is provided with spacing block set, and described spacing block set rotates and drive described outer wall boss and described inwall boss around described axis circumference in described limited impression superimposed or stagger.
In foolproof limiting structure of the present invention, described positive stop lug boss is the screw that is contained on the described knob spare and protrudes in its outer surface.
In foolproof limiting structure of the present invention, described installing hole inwall is provided with a plurality of inwall boss, and described a plurality of inwall boss is positioned on the same circumference.
In foolproof limiting structure of the present invention, described knob spare outer wall is provided with a plurality of outer wall boss, and described a plurality of outer wall boss is positioned on the same circumference.
In foolproof limiting structure of the present invention, the circumferential spacing along the circumferential direction between two described inwall boss of described limited impression below is greater than the circumferential lengths of described outer wall boss.
Implement foolproof limiting structure of the present invention, have following beneficial effect: by of the qualification effect of fiber groove, thereby limit the anglec of rotation of knob spare, and then the superimposed area of inwall boss and outer wall boss is limited spacing block set.For the light fixture of different requirement of explosion proof, also can realize the adjustment of different superimposed areas.Therefore, the present invention is by spacing realization fool proof function, and while knob spare must make spacing block set be positioned at limited impression just can carry out installation or removal, thereby has avoided operator's maloperation.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the assembling schematic diagram of the foolproof limiting structure of the preferred embodiment of the present invention;
Fig. 2 is the perspective view of middle fixture embodiment illustrated in fig. 1;
Fig. 3 is the perspective view of middle knob spare embodiment illustrated in fig. 1;
Fig. 4 is the vertical view of fixture shown in Figure 2;
Fig. 5 is the vertical view of knob spare shown in Figure 3.
The specific embodiment
The present invention relates to a kind of foolproof limiting structure, as shown in Figure 1, it comprises the fixture 200 in the mechanisms such as being fixedly mounted on light fixture, and the knob spare 100 that is contained on the fixture 200, can disassembles from fixture 200 by rotation.
As shown in Figure 2, have cylindrical installing hole in the middle of the fixture 200, on openend end face, offer limited impression 250 perpendicular to the installing hole axis.As shown in Figure 2, limited impression 250 along the circumferential direction extends and has certain circumferential lengths.At the two ends of limited impression 250 along circumferential direction, be printed on the symbol of " ← open " and " close → " respectively, show that knob spare 100 rotates to the position that is printed on sign flag to two ends respectively and can open or close.An end that is printed on " ← open " is for opening the state end, and the other end that is printed on " close → " is the off status end.
On the cylinder shape inner wall of installing hole, be provided with the inwall boss 280 that along the circumferential direction extends perpendicular to axis.In this preferred embodiment, be provided with three identical inwall boss 280 that are positioned on the same circumference altogether, and three inwall boss 280 are to distribute residing circumference trisection ground.The quantity of inwall boss 280 also can be one, two or more than three, as long as it all is positioned on the same circumference.
As shown in Figure 3, the application's knob spare 100 is an annular, and the cylindrical side wall at its top is provided with the spacing block set 150 of projection.Spacing block set 150 also is installed to screw or other structures that knob spare 100 gets on.Spacing block set 150 is used to insert in the limited impression 250, and rotates along circumference in limited impression 250, and it is movable to the state of the opening end or the off status end of limited impression 250.
Because spacing block set 150 has certain width, as shown in Figure 5, the pairing central angle of its width is the B degree, as shown in Figure 4, the pairing central angle of limited impression 250 circumferential lengths along the circumferential direction is the A degree, then the angle that can rotate in limited impression 250 of spacing block set 150 is (A-B) degree, and this also is knob spare 100 revolvable angle in the installing hole of fixture 200.
As shown in Figure 3, the cylindrical outer wall of knob spare 100 is provided with along the circumferential direction the outer wall boss 180 that extends, its circumferential lengths can with the equal in length of above-mentioned inwall boss 280, also can be greater than or less than the length of inwall boss 280.Simultaneously, outer wall boss 180 along knob spare 100 axis directions from the distance of spacing block set 150 greater than inwall boss 280 distance apart from limited impression 250 on same direction, and the difference of two distances is not less than the thickness of inwall boss 280, thereby outer wall boss 180 and inwall boss 280 are staggered in the position of axis direction, and the two can stagger or superimposed at circumferencial direction by the rotation of knob spare 100.
Outer wall boss 180 correspondences is set to identical three in the present embodiment.Three outer wall boss 180 are positioned on the same circumference, and the circumferential distance in the edge between the outer wall boss 180 adjacent one another are equates.Equally, the quantity of outer wall boss 180 is not defined as three yet, and they can be for one, two or more than three.Need to prove, the circumferential lengths of each outer wall boss 180 must be less than the circumferential lengths of spacing between two inwall boss 280 that will pass therethrough, promptly be positioned at the circumferential spacing along the circumferential direction between two inwall boss (280) of limited impression (250) below, need open when taking out knob spare 100 with box lunch, the outer wall boss 180 of knob spare 100 can be threaded to and inwall boss 280 staggers and the gap between two inwall boss 280 take out.
When needs were opened, rotation knob spare 100 made spacing block set 150 go to the state of the opening end of limited impression 250, and outer wall boss 180 rotated with knob spare 100 and staggered fully at circumferencial direction with inwall boss 280 this moment.In this state, inwall boss 280 can not retrain outer wall boss 180 at axis direction, so inwall boss 280 can outwards pull out along axis, thereby knob spare 100 is disassembled from fixture 200.
When needs were closed, to the off status end rotation knob spare 100 of limited impression 250, thereby it was some or all of overlapping at circumferencial direction with inwall boss 280 to drive outer wall boss 180.As long as outer wall boss 180 has part superimposed with inwall boss 280, then inwall boss 280 will retrain outer wall boss 180 and moves axially, and knob spare 100 can be combined closely with fixture 200.
In the time of in being applied in explosion-proof lamp, the superimposed area of outer wall boss 180 and inwall boss 280 is had certain requirement, have only superimposed area enough could guarantee the installation strength of light fixture greatly, to prevent the infiltration of outside pernicious gas.In the present invention, when positive stop lug boss 150 is positioned at out the state end, outer wall boss 180 just staggers in circumferential direction fully with adjacent inwall boss 280, to off status end rotation knob spare 100, the angle of being rotated just outer wall boss 180 and inwall boss 280 superimposed angle.That is to say,, can control the superimposed area of inside and outside wall boss 180, to adjust the sealing intensity of knob spare 100 and fixture 200 by rotary spacing projection 150.From the above, in the present embodiment, the angle in relative rotation of knob spare 100 and fixture 200 is (A-B) degree.
Adopt foolproof limiting structure of the present invention, need elder generation to place the state of the opening end of limited impression 250 just knob spare 100 can be put in the installing holes spacing block set 150 of knob spare 100 when mounted, therefore have fool proof; After packing into again rotary stopper projection 150 make to the off status end and move, the angle of rotation has promptly determined the superimposed area of outer wall boss 180 and inwall boss 280, and spacing block set 150 can be threaded to different angles according to different light fixture demands; And spacing block set 150 can only move in limited impression 250, and itself promptly has position-limiting action to knob spare 100; When needs are dismantled, must earlier spacing block set 150 be threaded to out the state end equally and just can carry out disassembling section, otherwise can't disassemble, thereby avoid maloperation, have fool proof equally.Therefore, the present invention can be easily and fast, reliably knob spare 100 and fixture 200 are positioned, assemble and dismantle.
In conjunction with the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; rather than it is restrictive; those skilled in the art is under enlightenment of the present invention; not breaking away under the scope situation that aim of the present invention and claim protect, also can make a lot of forms, these all belong within the protection of the present invention.

Claims (5)

1. foolproof limiting structure, comprise fixture (200) and be contained in the described installing hole and the knob spare (100) that can rotate around the axis of described installing hole with installing hole, it is characterized in that, be respectively arranged with inwall boss (280) that along the circumferential direction extends into arc and outer wall boss (180) on the outer wall of the inwall of the described installing hole that is oppositely arranged and knob spare (100) perpendicular to described axis, and described outer wall boss (180) makes described outer wall boss (180) and inwall boss (280) stagger along described axis direction from the distance of described installing hole open end greater than described inwall boss (280), the open end of described installing hole is provided with the limited impression (250) that along the circumferential direction extends perpendicular to described axis, described knob spare (100) is provided with spacing block set (150), and described spacing block set (150) rotates and drive described outer wall boss (180) around described axis circumference in described limited impression (250) superimposed or stagger with described inwall boss (280).
2. foolproof limiting structure according to claim 1 is characterized in that, described spacing block set (150) is the screw that is contained on the described knob spare (100) and protrudes in its outer surface.
3. foolproof limiting structure according to claim 1 is characterized in that, described installing hole inwall is provided with a plurality of inwall boss (280), and described a plurality of inwall boss (280) are positioned on the same circumference.
4. foolproof limiting structure according to claim 1 is characterized in that, described knob spare (100) outer wall is provided with a plurality of outer wall boss (180), and described a plurality of outer wall boss (180) are positioned on the same circumference.
5. foolproof limiting structure according to claim 3 is characterized in that, the circumferential spacing along the circumferential direction between two described inwall boss (280) of described limited impression (250) below is greater than the circumferential lengths of described outer wall boss (180).
CN2010101683055A 2010-05-10 2010-05-10 Foolproof limiting structure Expired - Fee Related CN101858571B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010101683055A CN101858571B (en) 2010-05-10 2010-05-10 Foolproof limiting structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010101683055A CN101858571B (en) 2010-05-10 2010-05-10 Foolproof limiting structure

Publications (2)

Publication Number Publication Date
CN101858571A true CN101858571A (en) 2010-10-13
CN101858571B CN101858571B (en) 2012-07-25

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102720985A (en) * 2011-03-30 2012-10-10 海洋王照明科技股份有限公司 Airport vertical type approaching lamp provided with foolproof structure
CN105135513A (en) * 2015-09-29 2015-12-09 广东美的环境电器制造有限公司 Gear switch-adjustable temperature controller connection structure and fan heater comprising same
CN105276533A (en) * 2014-12-05 2016-01-27 深圳市赛博优讯科技有限公司 Lens support fixing structure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB661920A (en) * 1949-03-22 1951-11-28 Veritys Ltd Improvements relating to reflectors of suspended electric lamps
CN200993297Y (en) * 2006-12-20 2007-12-19 松锜科技股份有限公司 Angle limited rotary positioning mechanism
CN100594314C (en) * 2004-09-07 2010-03-17 本田技研工业株式会社 Shear gears

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB661920A (en) * 1949-03-22 1951-11-28 Veritys Ltd Improvements relating to reflectors of suspended electric lamps
CN100594314C (en) * 2004-09-07 2010-03-17 本田技研工业株式会社 Shear gears
CN200993297Y (en) * 2006-12-20 2007-12-19 松锜科技股份有限公司 Angle limited rotary positioning mechanism

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102720985A (en) * 2011-03-30 2012-10-10 海洋王照明科技股份有限公司 Airport vertical type approaching lamp provided with foolproof structure
CN102720985B (en) * 2011-03-30 2015-05-06 海洋王照明科技股份有限公司 Airport vertical type approaching lamp provided with foolproof structure
CN105276533A (en) * 2014-12-05 2016-01-27 深圳市赛博优讯科技有限公司 Lens support fixing structure
CN105276533B (en) * 2014-12-05 2018-11-27 深圳市赛博优讯科技有限公司 Lens carrier fixed structure
CN105135513A (en) * 2015-09-29 2015-12-09 广东美的环境电器制造有限公司 Gear switch-adjustable temperature controller connection structure and fan heater comprising same

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Publication number Publication date
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