CN102095030A - Preventing device for improper disassembly of connecting nut for measuring meter - Google Patents
Preventing device for improper disassembly of connecting nut for measuring meter Download PDFInfo
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- CN102095030A CN102095030A CN 200910259016 CN200910259016A CN102095030A CN 102095030 A CN102095030 A CN 102095030A CN 200910259016 CN200910259016 CN 200910259016 CN 200910259016 A CN200910259016 A CN 200910259016A CN 102095030 A CN102095030 A CN 102095030A
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- attaching nut
- hole
- card complex
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Abstract
The invention relates to a preventing device for improper disassembly of a connecting nut for a measuring meter. A device main body comprises a first main part and a second main part. The root ends of the first main part and the second main part are connected by a pivot in a rotatable opening and closing way. When the first main part and the second main part are in an opening position, the connecting nut and a primary side gas pipeline can be inserted between the first main part and the second main body from an opened part of the primary side gas pipeline. A leaving movement-stopping mechanism is arranged between the front ends of the first main part and the second main part and used for maintaining the front ends of the first main part and the second main part at a closed part where the first main part and the second main part are connected mutually in a supporting way. When the first main part and the second main part are in the closed position, the device main body is cylindrical and internally forms an accommodating hole. The connecting nut is accommodated in the accommodating hole and is enabled to rotate. A first annular projection capable of penetrating through a gas introducing port of a gas meter is formed at one end of the accommodating hole. And a second annular projection capable of penetrating through the primary side gas pipeline is formed at the other end of the accommodating hole.
Description
Technical field
The present invention relates to the anti-locking apparatus of gauge table with attaching nut's improper dismounting, it is used to prevent the attaching nut that connection mouths such as the water intake of the water flowmeter of the gas introduction port of gas meter or gas export mouth or tap water or water outlet are connected with bodys such as gas pipeline or running water pipes is dismantled wrongly.
Background technique
For example as Figure 23 and shown in Figure 24, gas meter (ガ ス メ one タ) M is supported by first side gas pipeline (body) G1 and second side gas pipeline (body) G2.Promptly, first side and second side gas pipeline G1, G2 erect on ground and be provided with, and makes the front end of each gas pipeline G1, G2 towards the below by their front ends (upper end portion) are separately formed down " U " word shape.So-called " first side gas pipeline " typically refer to the upstream side that is configured in the gas utensil, to the pipeline of this gas utensil supply gas, and " second side gas pipeline " typically refers to the downstream side that is configured in the gas utensil, is used for the pipeline that will carry to other gas utensils by the gas of this gas utensil.As shown in figure 25, each gas pipeline G1, G2 towards below front end, rotationally be provided with attaching nut N with the state that prevents to break away from downwards.On the other hand, be provided with gas introduction port (connection mouth) M1 and gas export mouth (connection mouth) M2 in the upper end portion of gas meter M.Attaching nut N and gas introduction port M1 screw.By tightening attaching nut N the end face of gas introduction port M1 is pushed to the end face of first side gas pipeline G1 via pad P, thus, first side gas pipeline G1 hermetic is connected with gas introduction port M1.Equally, second side gas pipeline G2 utilizes attaching nut N hermetic to be connected with gas export mouth M2.
With under first side and second side gas pipeline G1, G2 and gas introduction port M1 and the situation that gas export mouth M2 is connected as described above, use common anchor clamps such as spanner just can unclamp attaching nut N like a cork.Therefore, exist attaching nut N to be dismantled wrongly from gas introduction port M1 and gas export mouth M2, thus the possibility of using gases wrongly.
In order to prevent this unfavorable situation, following patent documentation 1,2 discloses the device that is used to prevent improper dismounting attaching nut N.The anti-locking apparatus of this improper dismounting has curtain-shaped cover member.Curtain-shaped cover member is tubular, is configured to rotatable at the front end of first side gas pipeline G1 but can not moves at above-below direction.Inside at curtain-shaped cover member is being accommodated attaching nut N rotationally.Therefore, curtain-shaped cover member just becomes obstacle, and attaching nut N can not be rotated by anchor clamps such as spanners.Thus, can prevent that attaching nut N from being dismantled wrongly from gas introduction port M1.The attaching nut N of second side gas pipeline G2 also is provided with the same manner, can prevent that it from being dismantled wrongly from gas export mouth M2.
Patent documentation 1: TOHKEMY 2007-303533 communique
Patent documentation 2: TOHKEMY 2008-144959 communique
Above-mentioned existing gauge table has the problem of the gas meter that can not be used for being provided with the anti-locking apparatus of attaching nut's improper dismounting.Promptly, since curtain-shaped cover member be tubular, so just can not make first side gas pipeline G1 or second side gas pipeline G2 pass curtain-shaped cover member, consequently can not be housed in curtain-shaped cover member inside to attaching nut N for the gas meter that has been provided with.
If dismounting attaching nut N also unloads gas meter M down just can use above-mentioned existing improper dismounting anti-locking apparatus from gas pipeline G1, G2, but must carry out dismounting and the installation of two attaching nut N, N for this reason at least, have the problem that needs a lot of labours.
Summary of the invention
The present invention develops in order to address the above problem, be the anti-locking apparatus of a kind of gauge table with attaching nut's improper dismounting, the connection mouth of gauge table and the either party in the body, under the state that prevents to come off, be provided with the attaching nut in rotating mode, screw this attaching nut connection mouth and the opposing party in the body of gauge table and tighten, thus, the connection mouth of described gauge table is connected with described body and fixing, gauge table is used to prevent that with the anti-locking apparatus of attaching nut's improper dismounting described attaching nut is by improper dismounting, it is characterized in that, possess: apparatus main body, it has first and second main body parts, the radicle of this first and second main body part can be that the center is connected to each other rotationally mutually with the rotation axis, thus, the front end of this first and second main body part can move leaving the open position more than the predetermined distance mutually and be close to mutually between the closed position below the predetermined distance, thereby closer to each other or leave; Leave and move prevention mechanism, it is set between described first and second main body parts, stops the front end of described first and second main body parts to leave mobile from described closed position to described open position side; Described apparatus main body is provided with accepting hole, this accepting hole and described rotation axis connect to the other end from an end face of described apparatus main body abreast, inside at this accepting hole, described attaching nut is accommodated with its axis state parallel with described rotation axis and in rotating mode, one end of the inner peripheral surface of this accepting hole is formed with first cyclic lug, this first cyclic lug can make the connection mouth of described gauge table pass and cover the outer circumferential side part of described attaching nut's a end face, the other end of the inner peripheral surface of described accepting hole is formed with second cyclic lug, and this second cyclic lug can make described body pass and cover the outer circumferential side part of described attaching nut's other end.
At this moment, preferred described leave to move stop mechanism to have: first card complex hole, the front end that it is arranged on the front end of described first main body part and connects described first main body part in the mode towards the front end of described second main body part; Second card complex hole, its be arranged on the front end of described second main body part and when described first and second main body parts are positioned at described closed position its axis consistent with described first card complex hole; Clamping rpole, it connects described first card complex hole and inserts described second card complex hole; Between the radicle outer circumferential face of the inner peripheral surface of described first card complex hole and described clamping rpole, be provided with and stop described first main body part to leave the first mobile clamping mechanism to described open position side from described closed position, between the front end outer circumferential face of the inner peripheral surface of described second card complex hole and described clamping rpole, be provided with and stop described second main body part to leave the second mobile clamping mechanism to described open position side from described closed position.
Preferred described first clamping mechanism has: large-diameter portion that forms at the radicle outer circumferential face of described clamping rpole and the bearing surface that forms at the inner peripheral surface of described first card complex hole, by make front end that described bearing surface and described large-diameter portion butt stop described first main body part from described closed position to described open position side shifting.
Preferred described second clamping mechanism has: the annular recessed portion that forms at the front end outer circumferential face of described clamping rpole; Forming can hole enlargement, undergauge, interior perimembranous insert described annular recessed portion and peripheral part from described annular recessed portion to the outstanding snap rings in outside; Form the engaging recessed part of ring-type at the inner peripheral surface of described second card complex hole; Described engaging recessed part is configured to: before described large-diameter portion and described bearing surface butt, when the front end of described clamping rpole is inserted in described second card complex hole, described engaging recessed part is relative with described snap rings, the peripheral part of described snap rings inserts described engaging recessed part, and the peripheral part of described snap rings engages with described engaging recessed part, the front end that stops described second main body part thus from described closed position to described open position side shifting.
The peripheral part of preferred described snap rings contacts with the bottom surface of described engaging recessed part.
Preferred described second card complex hole forms the through hole that connects the described second main body part front end, inner peripheral surface at described second card complex hole, week at described second card complex hole upwards is formed with a plurality of guiding grooves mutually with leaving, this guiding groove extends to described engaging recessed part at least from being positioned at the opening end of described second card complex hole of the opposite side of described first card complex hole, and the degree of depth of described guiding groove is configured to darker than the degree of depth of described engaging recessed part.。
And preferably possesses the clamper for disassembling that is used to make described snap rings undergauge and its peripheral part is deviate from from described engaging recessed part, described clamper for disassembling possesses: tubular jig main body, radicle are positioned at the outside of described jig main body and front end can insert the pressing lever of described jig main body movably, front end at described jig main body is provided with engaging releasing portion, and it inserts described a plurality of guiding groove respectively and the reduced diameter of described snap rings can be deviate from from described engaging recessed part to described snap rings.
Use the anti-locking apparatus of attaching nut's improper dismounting according to gauge table according to the present invention, because being used for that the attaching nut is housed in inner apparatus main body is made of the first and second two main body parts, the radicle of these two main body parts is connected to each other rotationally, thus, the front end of these two main body parts can carry out approaching between open position and closed position, leave mobile, therefore, move to open position by two main body parts are left, can insert the attaching nut who connects body and connection mouth from the inside to them between the front end of two main body parts.Then, two main body parts are moved to closed position.Like this, just the attaching nut is accommodated in the accepting hole of auto levelizer main body, attaching nut's outer circumferential face and both ends of the surface are covered by first and second cyclic lugs that the two end part of apparatus main body and accepting hole form.Therefore, can not use spanner to wait rotates the attaching nut.And, owing to apparatus main body can rotate relative to the attaching nut, so the attaching nut does not rotate yet even apparatus main body rotates.Thus, can prevent the attaching nut from the connection mouth of gauge table by improper dismounting.
Description of drawings
Fig. 1 is the figure of expression one embodiment of the invention, and Fig. 1 (A) is that its plan view, Fig. 1 (B) are that its plan view, Fig. 1 (C) are that its ground plan, Fig. 1 (D) are that its left side view, Fig. 1 (E) are its right side views;
Fig. 2 is the amplification view along the X-X line of Fig. 1 (A);
Fig. 3 makes first and second main body parts be positioned at the sectional view of representing under the state of open position same with Fig. 2;
Fig. 4 is the amplification view along the Y-Y line of Fig. 1;
Fig. 5 is the amplification view along the X-X line of Fig. 2;
Fig. 6 is the amplification view of Fig. 2 major component;
Fig. 7 makes clamping rpole move to the sectional view of representing under the state of clamped position same with Fig. 6;
Fig. 8 is the sectional view along the X-X line of Fig. 7;
Fig. 9 is the sectional view along the X-X line of Fig. 8;
Figure 10 is the figure of employed first main body part in the expression present embodiment, and Figure 10 (A) is that its plan view, Figure 10 (B) are that its plan view, Figure 10 (C) are its side views;
Figure 11 is the sectional view along the X-X line of Figure 10 (A);
Figure 12 is the sectional view along the Y-Y line of Figure 10 (B);
Figure 13 is the figure of employed second main body part in the expression present embodiment, and Figure 13 (A) is that its plan view, Figure 13 (B) are that its plan view, Figure 13 (C) are that its back elevation, Figure 13 (D) are its side views;
Figure 14 is the sectional view along the X-X line of Figure 13 (A);
Figure 15 is the sectional view along the Y-Y line of Figure 13 (B);
Figure 16 is the figure that is used to illustrate the using method of present embodiment, the state before expression is accommodated the attaching nut in the auto levelizer main body.
Figure 17 is the figure that is used to illustrate this using method, and expression is housed in state in the apparatus main body to the attaching nut.
Figure 18 is the figure that is used to illustrate this using method, and expression is fixed on first and second main body parts of constituent apparatus main body the state of closed position;
Figure 19 is the figure that is used to remove the fixing release method of first and second main body parts in order to illustrate, expression is inserted into guiding groove state before to the engaging releasing portion of clamper for disassembling;
Figure 20 is the figure that is used to illustrate this release method, represents to utilize the engaging releasing portion that is inserted into guiding groove to make the state of snap rings undergauge;
Figure 21 is the amplification view along the X-X line of Figure 20;
Figure 22 is the figure that is used to illustrate this release method, and expression utilizes the pressing lever of clamper for disassembling and makes the large-diameter portion of clamping rpole move the state of giving prominence to up to the outside from first main body part;
Figure 23 is the plan view that expression is connected with the gas meter of first side and second side gas pipeline;
Figure 24 is the side view of this gas meter;
Figure 25 is the amplification view along the X-X line of Figure 23.
Symbol description
The A gas meter anti-locking apparatus (the gauge table anti-locking apparatus of the improper dismounting of attaching nut) of the improper dismounting of attaching nut
G1 first side gas pipeline (body) G2 second side gas pipeline (body)
M gas meter (gauge table) M1 gas introduction port (connection mouth)
M2 gas export mouth (connection mouth) N attaching nut
1 apparatus main body, 2 first main body parts, 3 second main body parts
5 leave mobile mechanism's 6 clamper for disassembling, 11 accepting holes that stop
12 first cyclic lugs, 13 second cyclic lugs, 25 first card complex holes
51b large-diameter portion 51c annular recessed portion 52 snap rings 61 jig main bodies
61a engaging releasing portion 62 pressing levers
Embodiment
1～22 one embodiment of the invention are described with reference to the accompanying drawings.
The gauge table of present embodiment is used to prevent attaching nut N by improper dismounting with the anti-locking apparatus A of the improper dismounting of attaching nut, and this attaching nut N is used for the gas introduction port (connection mouth) of gas meter (gauge table) M of Figure 23～shown in Figure 24 is connected and fixed with first side gas pipeline (body) G1 or the gas export mouth (connection mouth) of gas meter M and second side gas pipeline (body) G2 are connected and fixed.With respect to gas meter M, be configured in its upstream side and that be connected with its gas introduction port M1 is first side gas pipeline G1, be configured in its downstream side and that be connected with its gas export mouth M2 is second side gas pipeline G2.Certainly, gauge table of the present invention also can be used in the attaching nut that prevents to connect other gas meters and gas pipeline by improper dismounting with the anti-locking apparatus of the improper dismounting of attaching nut, and also can be used in and prevent the water intake (connection mouth) of tap water usefulness gauge table or attaching nut that water outlet (connection mouth) is connected with running water pipe (body) by wrongful dismounting.
As Fig. 1～shown in Figure 3, gauge table has apparatus main body 1, pivot 4 and leaves to move with the anti-locking apparatus of the improper dismounting of attaching nut (following also abbreviate as sometimes anti-locking apparatus) A and stops mechanism 5.
Apparatus main body 1 has first and second main body parts 2,3.As Figure 10～shown in Figure 12, be formed with protuberance 21,22 mutually at the radicle of first main body part 2 with leaving.Be formed with the axle bed hole 23 that connects protuberance 21 and arrive protuberance 22 on the protuberance 21,22.As shown in Figure 4 and Figure 5, pivot 4 inserts this axle bed hole 23.On the other hand, as Figure 13～shown in Figure 15, be formed with protuberance 31 at the radicle of second main body part 3.This protuberance 31 is inserted between the protuberance 21,22.Be formed with the axle bed hole 32 of perforation on the protuberance 31.Pivot 4 passes this axle bed hole 32.Like this, the radicle of first and second main body parts 2,3 is that the center links rotationally mutually with the axis of pivot 4 (below be called rotation axis) L.
First and second main body parts 2,3 can rotate between Fig. 1 (B), (C) and closed position shown in Figure 2 and Fig. 3 and open position shown in Figure 16.The closed position of first and second main body parts 2,3 is decided by the mutual butt of front end of first and second main body parts 2,3.Also not necessarily need closed position is set at the position of the mutual butt of front end of first and second main body parts 2,3, also the position that can leave the front end of first and second main body parts 2,3 a little mutually is as closed position.On the other hand, open position for first and second main body parts 2,3, so long as by making attaching nut N radially relatively move and can attaching nut N just can from the position that is inserted between the front end of first and second main body parts 2,3 between first and second main body parts 2,3 to it, so long as satisfy this condition, then can fix on the arbitrary position.
Make first and second main body parts 2,3 be positioned at closed position.Present cylindricly in this state lower device main body 1, its inside becomes accepting hole 11.Apparatus main body 1 is made of first and second main body parts 2,3, and is corresponding therewith, accepting hole 11 roughly half is formed on first main body part 2, in addition roughly half is formed on second main body part 3.Accepting hole 11 extends abreast with rotation axis L, forms from an end face of apparatus main body 1 and penetrates into the through hole of the cross section of another end face for circle.The internal diameter of accepting hole 11 is set to roughly the same or big a little with the maximum outside diameter of attaching nut N.Therefore, accepting hole 11 can be accommodated attaching nut N under the roughly consistent state of its axis and the axis of accepting hole 11, under the state of accommodating, apparatus main body 1 can be that rotate relative to attaching nut N at the center with the axis (axis of attaching nut N) of accepting hole 11.
As Fig. 1 (C), Fig. 2 and shown in Figure 4, be formed with first cyclic lug 12 in an end (underpart among Fig. 4) of accepting hole 11 at extending circumferentially.First cyclic lug 12 also is that circumferential roughly half is formed on first main body part 2, in addition roughly half is formed on second main body part 3.Constitute an end separately of two parts of first cyclic lug 12, promptly be positioned at an end of the forward end of first and second main body parts 2,3, when first and second main body parts 2,3 are positioned at closed position, be in contact with one another.But the other end separately that constitutes two parts of first cyclic lug 12 is circumferentially being left a little.Certainly, the other end separately of first cyclic lug 12 also can be configured to be in contact with one another when first and second main body parts 2,3 are positioned at closed position.The internal diameter of first cyclic lug 12 is bigger slightly than the external diameter (external diameter of=gas export mouth M2) of gas introduction port M1.Therefore, gas introduction port M1 (gas export mouth M2) can pass in first cyclic lug 12.And as shown in Figure 4, the internal diameter of first cyclic lug 12 is significantly less than the external diameter of attaching nut N.Therefore, under the state in attaching nut N is housed in accepting hole 11, the major part that is positioned at attaching nut N one end face of gas introduction port M1 (gas export mouth M2) side is covered by first cyclic lug 12.
As Fig. 1 (B) and shown in Figure 4, be formed with second cyclic lug 13 in the other end (upper end portion among Fig. 4) of accepting hole 11 at extending circumferentially.Second cyclic lug 13 also is that circumferential roughly half is formed on first main body part 2, in addition roughly half is formed on second main body part 3.Constitute an end separately of two parts of second cyclic lug 13, promptly, be positioned at the end separately of first and second main body parts, 2,3 forward end, when first and second main body parts 2,3 are positioned at closed position, be in contact with one another.But the other end separately that constitutes two parts of second cyclic lug 13 was upwards left a little in week.Certainly, the other end separately of second cyclic lug 13 also can be configured to be in contact with one another when first and second main body parts 2,3 are positioned at closed position.The internal diameter of second cyclic lug 13 is bigger slightly than the external diameter (external diameter of=second side gas pipeline G2) of first side gas pipeline G1.Therefore, first side gas pipeline G1 (second side gas pipeline G2) can pass in second cyclic lug 13.And as shown in Figure 4, the internal diameter of second cyclic lug 13 is significantly less than the external diameter of attaching nut N.Therefore, under the state in attaching nut N is housed in accepting hole 11, the major part of other end that is positioned at the attaching nut N of first side gas pipeline G1 (second side gas pipeline G2) side is covered by second cyclic lug 13.
Distance between first cyclic lug 12 and second cyclic lug 13 is configured to the thickness (size of axial direction) of attaching nut N roughly the same or big slightly.Therefore, attaching nut N can be housed in the accepting hole 11.Under the state in attaching nut N is housed in accepting hole 11, the axis of attaching nut N is roughly consistent with the axis of accepting hole 11, and is that the center can be rotated relative to apparatus main body 1 with this axis.And attaching nut N almost can not move on the axial direction of accepting hole 11.In other words, apparatus main body 1 is assembled into when making first and second main body parts 2,3 be positioned at closed position, and this apparatus main body 1 can be that rotate at the center with the axis of attaching nut N with respect to attaching nut N, but almost can not move at axial direction.
Being provided with between the front end of first and second main body parts 2,3 with described clamping rpole 51 is that leaving of main structure moved prevention mechanism 5.Leave the mobile mechanism 5 that stops and be used to stop the front end of first and second main body parts 2,3 mobile to leaving of open position side from closed position, its structure is as follows.
Promptly, as Fig. 2, Fig. 3 and Figure 10～shown in Figure 15, at the front end separately of first and second main body parts 2,3, be formed with protuberance 24,33 respectively, this protuberance 24,33 is outstanding to the direction opposite with the projected direction of protuberance 21,22,31.This protuberance 24,33 is configured to mutual butt when first and second main body parts 2,3 are positioned at closed position.
As Fig. 6～shown in Figure 8, be formed with first card complex hole 25 on the protuberance 24.This first card complex hole 25 connects protuberance 24 along the movement direction that leaves of the front end of first and second main body parts 2,3 that are positioned at closed position.First card complex hole 25 has from the one end 25a of large diameter hole portion, cone hole part 25b, the 25c of embedding hole portion and the 25d of stop hole portion that (end that is positioned at a side opposite with protuberance 33) forms to the other end order.25a～the 25d of these hole portions is formed the axis unanimity that makes each other.The bottom surface of the 25a of large diameter hole portion becomes bearing surface 25e.Cone hole part 25b along with from first card complex hole 25 one distolateral diameter diminishes towards another is distolateral, its maximum inner diameter is also littler than the internal diameter of the 25a of large diameter hole portion.The minimum diameter of cone hole part 25b is identical with the internal diameter of the 25c of embedding hole portion.The internal diameter of the 25d of stop hole portion is configured to the size than the big regulation of internal diameter of the 25c of embedding hole portion.
Clamping rpole 51 inserts first card complex hole 25.The large-diameter portion 51b that clamping rpole 51 has axial region 51a and forms at the radicle (left part among Fig. 6) of this axial region 51a.Axial region 51a can be chimeric with the 25c of embedding hole portion slidably.The diameter of large-diameter portion 51b is bigger and littler than the 25a of large diameter hole portion footpath than the 25c of embedding hole portion, can insert the 25a of large diameter hole portion.Therefore, when clamping rpole 51 being continued to 25 insertions of first card complex hole, then as shown in Figure 7, the bottom surface of large-diameter portion 51b and the 25a of large diameter hole portion is a bearing surface 25e butt, can not continue clamping rpole 51 to insert to first card complex hole 25.Below, the position of clamping rpole 51 is at this moment called the card stop bit put.When clamping rpole 51 was positioned at the card stop bit and puts, the front end of axial region 51a was from the other end opening portion of first card complex hole 25 length to the outstanding regulation in outside.
The front end of axial region 51a is formed with two annular recessed portion 51c.Two annular recessed portion 51c, 51c are separated from each other configuration on the axial direction of axial region 51a.Can only form an annular recessed portion 51c, also can form more than three.
Snap rings 52 is installed in annular recessed portion 51c.By the cross section is formed snap rings 52 for circular metallic axis body bends to roughly " C " word shape, it can hole enlargement, undergauge.Can be that tetragonal axis body forms snap rings 52 also by the cross section.Snap rings 52 is not by the nature of external force effect the time, from its radially central authorities in the inner part half or than half part of lacking, promptly, radially the inboard a little part of central authorities is accommodated by annular recessed portion 51c, half of the outside or then more outstanding to the outside from annular recessed portion 51c than half part of Duoing slightly.The diameter that constitutes the axis body of snap rings 52 is configured to the degree of depth of annular recessed portion 51c roughly the same or slightly little.Therefore, when making snap rings 52 undergauges, the integral body of snap rings 52 can be housed in the annular recessed portion 51c.
It is identical or slightly little or big slightly with the internal diameter of the 25d of stop hole portion that the external diameter of the snap rings 52 in the time of in the raw is configured to, and snap rings 52 can be inserted into the 25d of stop hole portion movably at its axial direction.As shown in Figure 6, when making clamping rpole 51 distolateral when mobile from the other end side direction one of first card complex hole 25, the bottom surface butt of snap rings 52 and the 25d of stop hole portion.At this, the bottom surface of the 25d of stop hole portion is formed by the plane with the orthogonal axe of first card complex hole 25.And the inside diameter D of the 25c of embedding hole portion is than the little given size of internal diameter of the 25d of stop hole portion, and this given size is suitable with the diameter of the axis body that constitutes snap rings 52.Therefore, when the butt of the bottom surface of snap rings 52 and the 25d of stop hole portion, clamping rpole 51 can not continue distolateral the moving to first card complex hole 25.Below, the position of clamping rpole 51 at this moment called remove the position.When clamping rpole 51 was positioned at the releasing position, large-diameter portion 51b was outstanding to the outside from an end opening portion of first card complex hole 25, and the front edge of axial region 51a is positioned at the inboard a little than the other end edge of first card complex hole 25.When clamping rpole 51 was positioned at the releasing position, the front edge of axial region 51a also can be more outstanding a little laterally than the other end edge of first card complex hole 25.
Clamping rpole 51 can following insertion first card complex hole 25.Promptly, the front end that makes axial region 51a forward, insert first card complex hole 25 from the 25a of large diameter hole portion.When axial region 51a is inserted into the assigned position of first card complex hole 25, the peripheral part of snap rings 52 in the raw just with the inner peripheral surface butt of cone hole part 25b.Therefore, snap rings 52 along with the insertion of axial region 51a by undergauge and enter into the 25c of embedding hole portion.Then, along with the insertion snap rings 52 of the axial region 51a inner peripheral surface along the 25c of embedding hole portion slides to the other end side of first card complex hole 25.When snap rings 52 enters into the 25d of stop hole portion by the 25c of embedding hole portion, because the elasticity of snap rings 52 self and its hole enlargement are to nature.Under this state, because the bottom surface butt of snap rings 52 and the 25d of stop hole portion, so stop distolateral be pulled out of clamping rpole 51 from first card complex hole 25.As described above clamping rpole 51 further when first card complex hole 25 inserts, then large-diameter portion 51b and bearing surface 25e butt.Thus, stop clamping rpole 51 to be pulled out from the other end opening portion of first card complex hole 25.
As Fig. 6～shown in Figure 8, the protuberance 33 of second main body part 3 is formed with second card complex hole 34.This second card complex hole 34 is configured to when first and second main body parts 2,3 are positioned at closed position, and the axis of first and second card complex holes 25,34 is consistent with each other, and forms as the through hole that connects protuberance 33.Second card complex hole 34 also can be open-ended and the blind hole that the other end is closed (ending ま り hole) in first card complex hole, 25 sides.It is identical with the internal diameter of the 25c of embedding hole portion that the internal diameter of second card complex hole 34 is set to.It is identical with the internal diameter of the 25c of embedding hole portion that the internal diameter of second card complex hole 34 not necessarily must be set for, can be slightly littler than the internal diameter of the 25c of embedding hole portion, and also can be big slightly.
End (ends of protuberance 24 sides) at second card complex hole 34 is formed with cone hole part 34a.This cone hole part 34a is formed from one of second card complex hole 34 and distolaterally reduces gradually towards another distolateral internal diameter, and it is identical or big slightly with the internal diameter of the 25d of stop hole portion that its maximum inner diameter is configured to, and it is identical with the internal diameter of second card complex hole 34 that its minimum diameter is configured to.Therefore, be positioned at the clamping rpole 51 of removing the position when clamped position moves predetermined distance, the inner peripheral surface butt of snap rings 52 and cone hole part 34a when making.Consequently along with the moving of clamping rpole 51, the internal diameter of snap rings 52 is reduced to identical with the internal diameter of second card complex hole 34.Thus, snap rings 52 can successfully enter second card complex hole 34 by cone hole part 34a from the 25d of stop hole portion.
Inner peripheral surface at second card complex hole 34 is formed with a plurality of engaging recessed part 34b that extend in the form of a ring.It is identical quantity that engaging recessed part 34b forms with snap rings 52.Therefore, in the present embodiment, form two engaging recessed part 34b.Two engaging recessed part 34b are configured to, and when clamping rpole 51 moved to clamped position, on the axial direction of second card complex hole 34, two engaging recessed part 34b were positioned at same position with annular recessed portion 51c, 51c respectively.Therefore, when clamping rpole 51 moves to clamped position, engaging recessed part 34b and snap rings 52 relative to.Consequently, the enlarged-diameter of the snap rings 52 of reduced in second card complex hole 34, its peripheral part enters engaging recessed part 34b.
It is identical or slightly little or big slightly with the external diameter of in the raw snap rings 52 that the internal diameter of engaging recessed part 34b is configured to.The degree of depth of engaging recessed part 34b be configured to radius with the axis body that constitutes snap rings 52 identical or compare dark slightly.And the side that is positioned at the distolateral engaging recessed part 34b of second card complex hole 34 1 is made of the plane with the orthogonal axe of second card complex hole 34.Therefore, when clamping rpole 51 moves and the peripheral part of snap rings 52 when entering into engaging recessed part 34b to clamped position, the side butt of snap rings 52 and the engaging recessed part 34b of distolateral (protuberance 24 sides) that are positioned at second card complex hole 34, thus, clamping rpole 51 is prevented to the mobile of radicle side.Particularly in the present embodiment, when the clamping rpole 51 that is positioned at clamped position from its forward end when the butt thruster is pressed, the interior perimembranous of the outer circumferential face of clamping rpole 51 and the pushing of the connecting part 51d between the side of the annular recessed portion 51c of clamping rpole 51 forward end snap rings 52, make the enlarged-diameter of snap rings 52, snap rings 52 by on the bottom surface that is pressed in engaging recessed part 34b.Therefore, the central part side of the axis body that makes progress in snap rings 52 footpaths and the side butt of engaging recessed part 34b stop clamping rpole 51 from clamped position moving to the releasing position side reliably.
Like this, when making clamping rpole 51 be positioned at clamped position, utilize first and second main body parts 2,3 just with its fixed-site at clamped position.In other words, first and second main body parts 2,3 are fixed on closed position owing to the clamping rpole 51 that is positioned at clamped position and snap rings 52.As knowing perfectly well from said structure, constitute first clamping mechanism by the large-diameter portion 51b and the bearing surface 25e of clamping rpole 51, constitute second clamping mechanism by annular recessed portion 51c, snap rings 52 and engaging recessed part 34b.
Owing to be provided with two snap rings 52 and engaging recessed part 34b in the present embodiment, so the snap rings 52 that is configured in clamping rpole 51 forward end enter into be configured in the distolateral engaging recessed part 34b of second card complex hole 34 1 after, move in second card complex hole 34 with the reduced state of diameter once more and enter another engaging recessed part 34b with regard to needs.So another the distolateral side 34c that is positioned at that is configured in a distolateral engaging recessed part 34b is set to from a distolateral conical surface that diminishes gradually towards another distolateral internal diameter.Thus, enter into the snap rings 52 in the distolateral engaging recessed part 34b who is configured in second card complex hole 34, can be along with distolateral forward mobile its diameter that dwindles of clamping rpole 51, move in second card complex hole 34 between two engaging recessed part 34b, 34b, and successfully enter in another engaging recessed part 34b.
The following describes and use the anti-locking apparatus A of said structure to prevent attaching nut N by the method for improper dismounting, this attaching nut N connects the gas introduction port M1 of first side gas pipeline G1 and gas meter M.Prevent to connect second side gas pipeline G2 and gas meter M gas export mouth M2 attaching nut N by the method for improper dismounting with prevent that first side attaching nut N is identical by the method for improper dismounting, so omit its explanation.
At first, as shown in figure 16, make first and second main body parts 2,3 of constituent apparatus main body 1 be positioned at open position, the opened portion that makes them relative with the outer circumferential face of attaching nut N to.On the rotation axis L of attaching nut N direction, carry out the contraposition of first and second main body parts 2,3, so that attaching nut N is between first and second cyclic lugs 12,13 of apparatus main body 1.Then, by making first and second main body parts 2,3, attaching nut N is inserted relatively the inside of first and second main body parts 2,3 from the opened portion between first and second main body parts 2,3 to the moving radially of attaching nut N.Then, as shown in figure 17, first and second main body parts 2,3 are turned to closed position from open position, attaching nut N is housed in the inside of accepting hole 11.Then, as shown in figure 18, make the clamping rpole 51 that is positioned at the releasing position move to clamped position, first and second main body parts 2,3 are fixed on closed position.Under this state, the whole outer circumferential face of attaching nut N and the major part of both ends of the surface are covered by apparatus main body 1.Therefore, attaching nut N is rotated.Thus, can prevent that attaching nut N from being dismantled wrongly.Because apparatus main body 1 can rotate with respect to attaching nut N, so, attaching nut N is not rotated even apparatus main body 1 rotates.
In addition, under situations such as gas meter M breaks down, must dismantle attaching nut N and gas meter M is replaced with other gas meter M.In this case, need sometimes the apparatus main body 1 of anti-locking apparatus A is unloaded down from attaching nut N.From this point of view, anti-locking apparatus A also has following structure.
Promptly, as Fig. 6～Fig. 9 and Figure 19～shown in Figure 22, be formed with a plurality of (present embodiment is six) guiding groove 35 at the inner peripheral surface of second card complex hole 34 of second main body part 3.A plurality of guiding grooves 35 are in the circumferential first-class arranged spaced of second card complex hole 34.Each guiding groove 35 extends along second card complex hole 34 from being positioned at the end face of the protuberance 33 of protuberance 24 opposite sides, and connects two engaging recessed part 34b and extend to protuberance 24 sides.Guiding groove 35 also can extend to the position that does not connect two engaging recessed part 34b, 34b, but will extend to the engaging recessed part 34b that is configured in protuberance 24 sides at least.The degree of depth of the depth ratio engaging recessed part 34b of guiding groove 35 is dark.
For clamping rpole 51 is moved to removing position side from clamped position, use Figure 19～clamper for disassembling 6 shown in Figure 22.Clamper for disassembling 6 has the jig main body 61 of tubular.The front-end face (left side among Figure 19) of jig main body 61 be provided with guiding groove 35 equal numbers engage the 61a of releasing portion.In order to insert guiding groove 35 respectively, each engages the circumferential first-class arranged spaced of the 61a of releasing portion at jig main body 61.The engaging releasing 61a of portion extends along the axis of jig main body 61, and its length is configured to than the end face of protuberance 33 (right side among Figure 19) with apart from the distance between this end face engaging recessed part 34b far away.Therefore, as shown in figure 20, the engaging releasing 61a of portion is being inserted guiding groove 35 when an end face that makes jig main body 61 roughly contacts with protuberance 33, the front end of the engaging releasing 61a of portion is crossed two engaging recessed part 34b.
As shown in figure 21, the diameter of a circle that is formed by the internal surface of each engaging releasing 61a of portion is set to identical or slightly little with the internal diameter of second card complex hole 34.But in order to insert the engaging releasing 61a of portion in the guiding groove 35 this diameter of a circle is set at bigger slightly than the external diameter of the axial region 51a of clamping rpole 51.The diameter of a circle that forms owing to the internal surface by each engaging releasing 61a of portion is set at identical or slightly little with the internal diameter of second card complex hole 34, so when the engaging releasing 61a of portion is inserted guiding groove 35, as Figure 20 and as shown in Figure 21, the diameter of snap rings 52 is reduced owing to engage the releasing 61a of portion, can extract from engaging recessed part 34b.Therefore, clamping rpole 51 can move to removing position side from clamped position.At this, in order to make dwindling more successfully of snap rings 52 diameters carried out by the engaging releasing 61a of portion, be formed with along with towards the place ahead and the plane of inclination 61b that tilts laterally at the inner face of the front end of the engaging releasing 61a of portion.When the engaging releasing 61a of portion was inserted guiding groove 35, the outer circumferential face butt of this plane of inclination 61b and snap rings 52 made the reduced of snap rings 52 along with the engaging releasing 61a of portion insertion guiding groove 35.
The front end of pressing lever 62 can be inserted into the inside of jig main body 61 movably to the axial direction of jig main body 61.Pressing lever 62 utilization be arranged on it with jig main body 61 between other force application mechanisms such as pressure spring (pair gesture means) 63 and distolateral distolateral by the application of force to another from jig main body 61 is positioned at position of readiness shown in Figure 20 when not using.When pressing lever 62 is positioned at position of readiness, even the 61a of portion inserts guiding groove 35 the engaging releasing, up to the position of an end face that makes jig main body 61 and protuberance 33 butts or up to the position of the end face butt of front-end face that engages the 61a of releasing portion and guiding groove 35, pressing lever 62 also is configured to its front-end face and is positioned at not position with the front-end face butt of clamping rpole 51.On the other hand, when pressing lever 62 was positioned at position of readiness, the radicle of pressing lever 62 was outstanding to the outside from jig main body 61, is formed with head 62a at this radicle.When pressing lever 62 is moved to its forward end, when the position of the radicle butt of this head 62a and jig main body 61, then as shown in figure 22, two snap rings 52,52 all are positioned at second card complex hole 34 that more is positioned at protuberance 24 sides than guiding groove 35.
As shown in figure 19, state clamper for disassembling 6 handle assembly main bodys 1 in the use when attaching nut N disassembles, make the axis of jig main body 61 consistent, engage the contraposition of 61a of releasing portion and guiding groove 35 simultaneously with the axis of second card complex hole 34 (axis of=the first card complex hole 25).Then as shown in figure 20, each engaging releasing 61a of portion is inserted each guiding groove 35 respectively.The engaging releasing 61a of portion is inserted into that jig main body 61 contacts with protuberance 33 or position contacting soon.When the engaging releasing 61a of portion is inserted guiding groove 35, then diameter is reduced because plane of inclination 61b is with engaging the releasing 61a of portion for snap rings 52, and its peripheral part is deviate from from engaging recessed part 34b.Then, promotion pressing lever 62 makes from its butt side direction forward end and moves.So as shown in figure 22, two snap rings 52,52 are left to protuberance 24 sides from engaging recessed part 34b, 34b, the large-diameter portion 51b of clamping rpole 51 is outstanding to the outside from first card complex hole 25 simultaneously.So pulling large-diameter portion 51b moves to clamping rpole 51 and removes the position.Like this, from by leave move to stop mechanism 5 that realize, stop first and second main body parts 2,3 just to be disengaged from the mobile blocked state of closed position to the open position side shifting.Then, the engaging releasing 61a of portion of clamper for disassembling 6 is pulled out from guiding groove 35.After first and second main body parts 2,3 are turned to open position, make it to the moving radially of attaching nut N, attaching nut N is extracted from the opened portion of first and second main body parts 2,3.Thus, apparatus main body 1 is just taken off from attaching nut N.
Because attaching nut N when attaching nut N disassembles exposes when handle assembly main body 1, so can attaching nut N be unclamped and unload from gas introduction port M1.Certainly can unload attaching nut N from gas export mouth M2 equally.Then gas meter M is replaced with new gas meter M, utilizes attaching nut N, N that new gas meter M is connected with second side gas pipeline G1, G2 with first side, and then attaching nut N is covered with anti-locking apparatus A.
The present invention is not limited to the foregoing description, can adopt various variation in the scope that does not break away from its main idea.
For example in the above-described embodiment, leaving to move stops mechanism 5 to have clamping rpole 51 and snap rings 52, large-diameter portion 51b and bearing surface 25e by clamping rpole 51 constitute first clamping mechanism, constitute second clamping mechanism by snap rings 52, annular recessed portion 51c and engaging recessed part 34b, stop mechanism 5 and adopt and have leaving of other structures and move and stop mechanism but also can replace leaving moving.But no matter be which kind of adopts leave the situation that stops mechanism that moves, importantly, can not remove by leaving the mobile mobile blocked state that mechanism realizes, that stop first and second main body parts 2,3 to rotate to the open position side that stops with common clamper for disassembling such as spanner or screw-drivers from closed position.This is because if not, by leave move stop that mechanism realizes, prevent that attaching nut N can easily be disengaged by the state of improper dismounting, the anti-locking apparatus of improper dismounting does not just have effect.
The employed gas meter of the foregoing description, attaching nut N is that the state with Drop-proof is arranged on the first side gas pipeline G1 (second side gas pipeline G2) rotationally, and attaching nut N combines with gas introduction port M1 (the gas export mouth M2) screw thread of gas meter M, but be arranged on the gas introduction port M1 (gas export mouth M2) of gas meter M rotationally with the state of Drop-proof for attaching nut N, and, also can use gauge table of the present invention to prevent locking apparatus with the improper dismounting of attaching nut with the gas meter that first side gas pipeline G1 (second side gas pipeline G2) screw thread combines.
In the above-described embodiments, for connect and fixedly first side gas pipeline G1 and gas introduction port M1 attaching nut N and is connected second side gas pipeline G2 and the attaching nut N of gas export mouth M2 has used improper dismounting prevent locking apparatus A respectively, but improper dismounting prevents that locking apparatus A also can be only for any attaching nut N use.
Gauge table of the present invention can be used in the attaching nut of the connection mouth that prevents to connect gas meter or water flowmeter and body by the situation of improper dismounting with the anti-locking apparatus of the improper dismounting of attaching nut.
Claims (7)
1. a gauge table is with the anti-locking apparatus of attaching nut's improper dismounting,
The connection mouth of gauge table and the either party in the body, under the state that prevents to come off, be provided with the attaching nut in rotating mode, screw this attaching nut connection mouth and the opposing party in the body of gauge table and tighten, thus, the connection mouth of described gauge table is connected with described body and fixing, gauge table is used to prevent that with the anti-locking apparatus of attaching nut's improper dismounting described attaching nut from by improper dismounting, is characterized in that, possess apparatus main body and leave to move and stop mechanism
Described apparatus main body has first and second main body parts, the radicle of this first and second main body part can be that the center is connected to each other rotationally mutually with the rotation axis, thus, the front end of this first and second main body part can and be close to mutually between the closed position below the predetermined distance at the open position that leaves predetermined distance mutually and move, thereby closer to each other or leave;
Described leaving move to stop mechanism to be set between described first and second main body parts, stops the front end of described first and second main body parts to leave mobile from described closed position to described open position side;
Described apparatus main body is provided with accepting hole, this accepting hole and described rotation axis connect to the other end from an end face of described apparatus main body abreast, in the inside of this accepting hole, described attaching nut is accommodated with its axis state parallel with described rotation axis and in rotating mode
One end of the inner peripheral surface of this accepting hole is formed with first cyclic lug, and the inside of this first cyclic lug can make the connection mouth of described gauge table pass, and described first cyclic lug covers the outer circumferential side part of described attaching nut's a end face,
The other end of the inner peripheral surface of described accepting hole is formed with second cyclic lug, and this second cyclic lug covers the outer circumferential side part of described attaching nut's other end.
2. the gauge table as claimed in claim 1 anti-locking apparatus of attaching nut's improper dismounting is characterized in that,
Described leaving move to stop mechanism to have: first card complex hole, the front end that it is arranged on the front end of described first main body part and connects described first main body part in the mode towards the front end of described second main body part; Second card complex hole, its be arranged on the front end of described second main body part and when described first and second main body parts are positioned at described closed position its axis consistent with described first card complex hole; Clamping rpole, it connects described first card complex hole and inserts described second card complex hole;
Between the radicle outer circumferential face of the inner peripheral surface of described first card complex hole and described clamping rpole, be provided with and stop described first main body part to leave the first mobile clamping mechanism to described open position side from described closed position,
Between the front end outer circumferential face of the inner peripheral surface of described second card complex hole and described clamping rpole, be provided with and stop described second main body part to leave the second mobile clamping mechanism to described open position side from described closed position.
3. the gauge table as claimed in claim 2 anti-locking apparatus of attaching nut's improper dismounting is characterized in that,
Described first clamping mechanism has: large-diameter portion that forms at the radicle outer circumferential face of described clamping rpole and the bearing surface that forms at the inner peripheral surface of described first card complex hole,
By make front end that described bearing surface and described large-diameter portion butt stop described first main body part from described closed position to described open position side shifting.
4. the gauge table as claimed in claim 3 anti-locking apparatus of attaching nut's improper dismounting is characterized in that,
Described second clamping mechanism has annular recessed portion, snap rings and engaging recessed part,
Described annular recessed portion is formed on the outer circumferential face of the front end of described clamping rpole,
Described snap rings forms can hole enlargement, undergauge, and perimembranous is inserted described second card complex hole in it, and its peripheral part is outstanding to the outside from described annular recessed portion,
Described engaging recessed part is configured to: when the front end of described clamping rpole is inserted in described second card complex hole and when described large-diameter portion and described bearing surface butt, described engaging recessed part is relative with described snap rings,
Engage with described engaging recessed part by the peripheral part that makes described snap rings, the front end that stops described second main body part from described closed position to described open position side shifting.
5. gauge table as claimed in claim 4 is characterized in that with the anti-locking apparatus of attaching nut's improper dismounting the peripheral part of described snap rings contacts with the bottom surface of described engaging recessed part.
6. the gauge table as claimed in claim 5 anti-locking apparatus of attaching nut's improper dismounting is characterized in that,
Described second card complex hole forms the through hole that connects the described second main body part front end, inner peripheral surface at described second card complex hole, week at described second card complex hole upwards is formed with a plurality of guiding grooves mutually with leaving, this guiding groove extends to described engaging recessed part at least from being positioned at the opening end of described second card complex hole of the opposite side of described first card complex hole, and the degree of depth of described guiding groove is configured to darker than the degree of depth of described engaging recessed part.
7. the gauge table as claimed in claim 6 anti-locking apparatus of the improper dismounting of attaching nut is characterized in that,
Also possess the clamper for disassembling that is used to make described snap rings undergauge and its peripheral part is deviate from from described engaging recessed part,
Described clamper for disassembling possesses: tubular jig main body, radicle are positioned at the outside of described jig main body and front end can insert the pressing lever of described jig main body movably,
Front end at described jig main body is provided with engaging releasing portion, and it inserts described a plurality of guiding groove respectively and the reduced diameter of described snap rings can be deviate from from described engaging recessed part to described snap rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910259016 CN102095030B (en) | 2009-12-09 | 2009-12-09 | Preventing device for improper disassembly of connecting nut for measuring meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910259016 CN102095030B (en) | 2009-12-09 | 2009-12-09 | Preventing device for improper disassembly of connecting nut for measuring meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102095030A true CN102095030A (en) | 2011-06-15 |
| CN102095030B CN102095030B (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910259016 Expired - Fee Related CN102095030B (en) | 2009-12-09 | 2009-12-09 | Preventing device for improper disassembly of connecting nut for measuring meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006244A (en) * | 2014-05-26 | 2014-08-27 | 美的集团武汉制冷设备有限公司 | Anti-detaching pipe connection device and air conditioner |
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2009
- 2009-12-09 CN CN 200910259016 patent/CN102095030B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006244A (en) * | 2014-05-26 | 2014-08-27 | 美的集团武汉制冷设备有限公司 | Anti-detaching pipe connection device and air conditioner |
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| CN102095030B (en) | 2013-01-02 |
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