CN1058077C - An activation device - Google Patents

Abstract

The invention provides a manual operating device which can reduce the number of part items can realize the rationalization of assembly work. This operating device is composed by assembling a base plate 11 a through hole 110 and the like are formed; a shaft 12 which consists of a rear member 121 projecting rearward from the through hole 110, a middle member 122 forming a projection 1222 at the front end surface 1223 of a flange 1221, and a front member 123 extended forward from the middle member 122; a driving plate 13 and a coil spring 14 installed to the shaft 12; and a shaft guide plate 15 having a circular hole with groove 1531. And by pressing in the front member 123 of the shaft 12, the projection 1222 is removed from grooves 1531b and 1531c, so as to make the shaft 12 rotatable.

Description

Operation equipment

The operation equipment that the present invention relates to push axle and rotate.

For example, partly be provided with to make in piezoelectricity type gas valve mechanism and begin to rotate difficult prevention mechanism (so-called " anti-child " mechanism), to guarantee Security, just employing pushed the mode of rotating then to light a fire with axle in the past.

In the past in order to realize that the prevention mechanism (" anti-child " mechanism) that begins to be difficult for rotating comprises that following each several part assembles: the substrate 602 that is provided with through hole 601; Have for the axle 603 run through used circular port 604 and be fixed on the substrate 602 the axle guiding element 605; By insert in the through hole 601 rear portion 606 be provided with the intermediate portion 608 of pin-and-hole 607 and be provided with that the front portion 610 of E shape annular groove 609 forms be roughly columniform 603; Be installed in spring 609 and driving plate 610 on axle 603 the intermediate portion 608; Squeeze into the pin 611 in the pin-and-hole 607; Have the trough of belt circular port 613 that has the groove 612 that combines with pin 611 on it and be fixed on revolution check plate 614 on the guiding element 605; Embed in the E shape annular groove 609 to prevent that axle 603 from pushing excessive E shape ring 615.

There is following problem in above-mentioned technology in the past.

Need process with the axle 603 that E shape annular groove 609 grades are set pin-and-hole 607 is set, need squeeze into pin and wait operation, thereby take a lot of trouble, expend cost and time with embedding E shape ring.

Have again in order to prevent that 603 prevention of forwards extracting and finish " anti-child " mechanism out from turning round and move, need to turn round check plate 614 in addition.Also have, owing to need turn round the fitting operation (tightening up) of check plate 614, so number is many.

Because it is amount of parts is many, takes cost on part management, simultaneously, bothersome time-consuming on assembly operation.

The objective of the invention is to: a kind of operation equipment is provided, and it can reduce amount of parts and the rationalization that realizes assembly operation.

In order to address the above problem, the present invention is assembled by following each part, and these parts comprise: the substrate that is provided with through hole; The peripheral direction that has to circular port forms the trough of belt circular port of groove and the axle guide plate of giving prominence to aforesaid substrate; Be columniform axle, the anterior unitary moulding that will have rear portion, the intermediate portion that passes above-mentioned through hole and pass above-mentioned trough of belt circular port, intermediate portion is bigger than the diameter of above-mentioned through hole, make the projection that combines with above-mentioned groove than the big lip part of the diameter of above-mentioned trough of belt circular port and in the front of above-mentioned lip part with the intersection at rear portion end difference being arranged and have; The helical spring that the lip part of front end and above-mentioned axle joins and above-mentioned axial the place ahead is suppressed.When pushing above-mentioned axle, above-mentioned projection is deviate from by groove, and axle promptly can rotate.

When not pushing the state of axle, the position Elastic Contact is preventing the extraction of axle near backboard is worn the groove circular port for the front of lip part and spindle guide, and projection embeds in the groove of trough of belt circular port, a rotation that stops spool.

When pushing spool, projection breaks away from groove, and axle promptly can rotate.Axle is because the end difference of axle contacts near the surface the through hole of substrate, and therefore axle can not push in again.

Because the projection of making previously at lip part and make the intermediate portion of axle than through-hole diameter the earth end difference is set does not need pin and E shape ring, therefore, do not need to be provided with pin-and-hole and E shape annular groove and axle is processed, do not need to squeeze into the operation that pin and embedding E shape are encircled yet.

Because the intermediate portion at axle is provided with lip part, its diameter does not need other component can prevent the extraction of axle greater than the diameter that is arranged on the trough of belt circular port on the guide plate.

Therefore, reduced the quantity of part, also made assembling operation easy.

Fig. 1 is the partial sectional view of piezoelectricity type gas valve that adopts the valve system of the formation with operation equipment of the present invention;

Fig. 2 is the exploded view that is used for the valve system on the piezoelectricity type gas valve;

Fig. 3 is the assembling finishing stage figure that is used for the valve system on the piezoelectricity type gas valve;

Fig. 4 is four views of the axle of valve system;

Fig. 5 is the stereogram that is used for the valve rod mechanism of piezoelectricity type gas valve;

Fig. 6 is an each several part ssembly drawing around the valve rod mechanism;

Fig. 7 is a valve system pith stereogram;

Fig. 8 is the exploded view that is used for the valve system of piezoelectricity type gas valve in the past.

According to Fig. 1～Fig. 7 one embodiment of the present of invention are described.

As shown in Figure 1, the rotary type gas valve G that valve rod mechanism R is housed has adopted the valve system M of structure of the present invention.

Shown in Fig. 2,3, valve system M comprises that following each part assembles, and these parts are: the substrate 11 that is provided with manhole 110 grades; The axle 12 that intermediate portion 122 that rear portion 121, the diameter of rearward being given prominence to by through hole 110 is big slightly and the front portion 123 of forwards being extended by intermediate portion 122 constitute; Be installed in driving plate 13 and helical spring 14 on the axle 12; Axle guide plate 15 with circular port 1531 of trough of belt.In addition, piezoelectricity generating means 16 is installed on substrate 11.

As shown in Figure 2, substrate 11 (thickness is about 1.6mm) carries out die-cut with sheet metal, make through hole 110 (diameter 7mm), tightens up portion 111,112, otch 113 (being used to install piezoelectricity generating means 16), fan-shaped slit 114,115 and be used for valve body 4 being installed in the tapped through hole at the back side and forming.

As shown in Figure 4, in the present embodiment, axle 12 pairs of metals (iron) bar carries out Cold Forging, with rear portion 121, intermediate portion 122 and anterior 123 unitary mouldings.

Axle 12 rear portion 121 is cylindrical, and its diameter is 6.85mm, and length is 10.6mm, by the rear end forwards direction be processed into otch 1212, its length is 7mm, width is 2.05mm, passes through to the rear by the place ahead of the through hole 110 of substrate 11.

Intermediate portion 122 is cylindrical, its diameter is 8mm, length is 16mm, by the intermediate portion top rearward 5.2mm make circular flange 1221, its thickness is 1.5mm, and diameter is 11mm, makes the projection 1222,1222 that is roughly rectangle in front-end face 1,223 one sides of flange 1221 again, its width is 2.5mm, highly is 2mm.Also have, on the diagram (b of Fig. 4, d) of intermediate portion 122, form flat horizontal surface (t2=5.7mm) 1224.In addition, because the diameter difference, at the intersection formation end difference 1225 of intermediate portion 122 with rear portion 121.

Anterior 123 is cylindrical, its diameter 6.85mm, and length 14mm, taper is processed on the top, forms flat horizontal surface 1231 on diagram (b of Fig. 4, d).After the assembling, be used to make 12 knob that rotate to position and fix and be installed in front portion 123 by flat horizontal surface 1231.

As shown in Figure 2, driving plate 13 (metallic) is made up of round plate 131 and the sheet part 132 that extends to peripheral direction, this round plate 131 has circular port 1311, the projection 1311a and the axle 12 that have inside week on this circular port 1311 pass above-mentioned circular port 1311, and above-mentioned driving plate 13 can contact with substrate 11 freely to rotate.When axle 12 when counter clockwise direction is rotated, flat horizontal surface 1224 is stuck on the projection 1311a of circular port 1311, therefore, driving plate 13 interlock revolution, sheet part 132 overcomes the elastic force effect that percussion hammer suppresses spring 164 percussion hammer 163 is boosted.

Helical spring 14 flexibly is installed between the flange 1221 and driving plate 13 of axle 12, front-end face 141 is pressed in the back of flange 1221, simultaneously, the front of ear end face 142 pushing driving plates 13, make the direction of axle 12 axle guide plate 15 forwards produce the effect of depending on, simultaneously, driving plate 13 is pressed against on the substrate 11.

Axle guide plate (metallic) 15 roughly is ＂ The ＂ shape has side plate 151,152 that forms otch 1511,1521 and the preceding board 153 that is provided with trough of belt circular port 1531, and the projection 1111,1121 that above-mentioned otch 1511,1521 is used for being arranged on the portion that tightens up 111,112 on the substrate 11 embeds.

Trough of belt circular port 1531 length that to be circular port 1531a of being about 8mm by diameter forms to foreign side's direction with periphery by circular port, groove 1531b, 1531c (the 180 ° of relative positions) formation of spending each 3mm.In addition, when knob was in the fire extinguishing position, the projection 1222,1222 of axle 12 embedded in groove 1531b, the 1531c, to stop the rotation of axle 12.

The formation of piezoelectricity generating means 16 comprises: the pressing plate 162 that produce high-tension piezoelectric element 161 when being subjected to mechanical force, prevents to come off from the otch 113 of piezoelectric element 161, the percussion hammer 163 of bump piezoelectric element 161, the percussion hammer that suppresses percussion hammer 163 suppress spring 164.

Fig. 5 represents valve rod mechanism R, and valve rod 21 axially is being provided with play and coaxial binding with cylindrical shell 22, produces the elastic force effect by spring 23 to departure direction.

Valve rod 21 is made with metal, is shaft-like.In front end (diagram left end) portion of valve rod 21, front end boss 211 is made one, and on the forward position of intermediate portion, intermediate flange 212 is arranged to one, forms minor diameter 213 on the center position of intermediate portion.

Resinous cylindrical shell 22, portion is provided with end wall 221 in its back-end, makes otch 222 by the center of outer thoughtful end wall 221.In addition, make square with the axis pin-and-hole 224 at front end, connection pin 225 is packed in this pin-and-hole 224.

Otch 222, its front portion (barrel portion) 2221 has the big width that the front end boss 211 of allowing valve rod 21 passes through, and its rear portion (end wall 221 parts) 2222 are made the degree more in a narrow margin of allowing that stem 210 embeds before the valve rod.In addition, in the inner central section of end wall 221,2222 form recess 2223 round the rear portion.

The front end boss 211 of valve rod 21 inserts in the otch 222, combines with the inwall of end wall 221.

Spring 23 is installed between the outside of intermediate flange 212 and end wall 221 with compressive state, makes valve rod 21 with respect to cylindrical shell 22 trend rears (illustrating right-hand).At this moment, front end boss 221 embeds in the recess 2223, is stoped to the mobile of periphery, prevents that valve rod 21 is by extracting out in the cylindrical shell 22.

In the valve body 4 of the rotary type gas valve G that valve rod mechanism R is housed, be provided with main valve 5, pilot valve 6 and safety valve 7.

In valve body 4, make through hole 41, at the intermediate portion of this through hole 41, can embed the closure member 50 (referring to Fig. 1) of the circular cone tubular of the valve body that constitutes main valve 5 freely to rotate.

Closure member 50 is arranged side by side the cross-drilled hole 51,52 as the combustion gas flow pass in its side, relatively make in conjunction with otch 53,53 at its front end.

The intermediate portion that comprises the valve body 4 of closure member 50 inside constitutes blast tube 401, in blast tube 401, run through valve body 4 in tip side (upstream side) from illustrated below and make combustion gas flow channel 402, at cross-drilled hole 51,52 corresponding on valve body 4 be arranged side by side master burner combustion gas flow pass 403 and the pilot burner blast tubes 404 of intermediate portion with closure member 50.

Front end at valve body 4 is equipped with valve rod mechanism R, in rearward end safety valve 7 is installed.

As shown in Figure 6, be pressed towards the valve rod mechanism R of axle direction forward end, the axle center that its valve rod 21 inserts closure member 50 when constituting the valve body of pilot valve 6, becomes the valve-opening mechanism of safety valve 7.Returnning spring 31 is housed between the ear end face of ladder in being arranged at closure member 50 on week and cylindrical shell 22.

The two end part 214,215 that pilot valve 6 makes the minor diameter 213 of its valve rod 21 can embed in the seal ring 54,55 with being free to slide, and sealing circle 54,55 is arranged in the axis hole of closure member 50 with combustion gas flow pass 404 across pilot burner.

The formation of safety valve 7 comprises: the valve port 72 and the back side that is provided with in electromagnet 71, the blast tube 401 between combustion gas flow channel 402 and combustion gas flow pass 404 is provided with the valve body 73 of spring.

Valve rod 21, axle direction keeps play and coaxial being attached on the cylindrical shell 22, pushes the valve body 73 of above-mentioned safety valve open with its top.Also have, when pushing valve rod 21, valve temporarily left by pilot valve 6.

Cam 91 is provided with the camming surface 95,95 of inclination in its front, make a pair of transverse arm 96,96 in the back, simultaneously, between the front of its back and closure member 50 spring 32 is mounted to compressive state.

Transverse arm 96,96 is integral revolution in the otch 53,53 of insertion closure member 50.In addition, camming surface 95,95 enters in the slit 114,115 of substrate 11, and along with the rotation of axle 12, camming surface 95,95 is rotated by slit 114,115 guidings.In addition, on the internal face of cam 91, be provided with axial inside groove 98,98 and combine with the two ends of connection pin 225.

When rotating operation axle 12, connection pin 225 combines and turns round with the otch 1212 of axle 12, and the inside groove 98 that cam 91 combines by the two ends with connection pin 225 obtains turning power and rotates.

After, rotary type gas valve G moves as following.

Cylindrical shell 22 and valve rod 21 are done axle direction displacement → safety valve 7 is pushed open, pilot valve 6 open valve → releasing rotating operation power → since the operation releasing, though cylindrical shell 22 and valve rod 21 had return → removed safety valve 7 by Returnning spring 31 pushing, but because the thermal electromotive force of thermocouple, safety valve 7 is kept out valve, pilot valve 6 closes valve, the pilot burner fire extinguishing.Also have, when safety valve 7 was promoted to drive valve by valve rod 21, spring 23 played absorption errors and buffering by compression.

The assembling of valve system M is described referring to Fig. 2,3 (also referring to Fig. 4) below.

(1) makes through hole 110 corresponding, driving plate 13 is placed on the surface of substrate 11 with circular port 1311.

(2) rear portion 121 that the axle 12 of helical spring 14 is housed on the intermediate portion 122 is inserted in circular port 1311 and the through hole 110, make projection 1311a be positioned at flat horizontal surface 1224 sides.

(3) front portion 123 of axle 12 is inserted in the trough of belt circular port 1531 of axle guide plate 15.

(4) top of side plate 151,152 is embedded in the otch of the portion that tightens up 111,112 of substrate 11.

(5) will tighten up portion 111,112 and be fixed tightly in the otch 1511,1521 of a guide plate 15, be fixed on the substrate 11 the axle guide plate 15 of helical spring 14 with driving plate 13 is housed.

Below, the action of rotary type gas valve G partly is described with regard to valve system M.

When the user does not push the state of knob, the front 1223 of flange 1221 contacts with trough of belt circular port 1531 back side on every side of axle guide plate 15, to prevent the extraction of axle 12, simultaneously, projection 1222,1222 embeds in groove 1531b, the 1531c, and axle 12 is in can not rotary state.

When the user pushed knob axle 12 is pushed (about 2.5mm), projection 1222,1222 was by deviating from groove 1531b, the 1531c, and axle 12 promptly can rotate.Also have, when axle 12 was pushed, through hole 110 surface on every side that the end difference 1225 of axle 12 is subjected to substrate 11 stoped, and axle 12 can not push again.

When the user is pushing under the state of knob knob when counter clockwise direction is rotated, driving plate 13 beginnings revolution linkedly, sheet part 132 overcomes percussion hammer and suppresses spring 164 elastic force and begin to boost percussion hammer 163, main valve 5 becomes out the valve state with safety valve 7 when the 1st regulation angle of revolution (35 °), sheet part 132 leaves percussion hammer 163 when the 2nd regulation angle of revolution (140 °), therefore, percussion hammer 163 clashes piezoelectric element 61 and produces spark by spring 164, and gas burner is lighted a fire.

Have again, because anti-child mechanism is arranged, with axle 12 promotion 2.5mm, projection 1222,1222 (height 2mm) is left after groove 1531b, the 1531c of a guide plate 15, axle 12 just may rotate, because the end difference 1225 of axle 12 touches substrate 11, and has determined pushing stroke (referring to Fig. 7).

Therefore, even under the not use condition of not finishing the pushing state of 2.5mm (diagram dotted line), axle 12 intermediate portion 122 is stuck on the driving plate 13 and does not break away from, so the recess 110a that the through hole 110 that makes substrate 11 is recessed into 1mm on every side is set, simultaneously, around the circular port 1311 of driving plate 13, the 1311b of semi-stamping portion is set, makes the thickness of driving plate 13 be equivalent to 2.4mm, add up to 3.4mm with the 1mm of recess 110a, surpass 2.5mm.

Below, the advantage that adopts valve machinery M to be obtained is described.

(A) because projection 1222 is arranged, exempted necessary in the past pin 611, also had,, exempted necessary in the past E shape ring owing to the intermediate portion 122 (diameter 8mm) that makes axle 12 forms end difference 1225 greatly than through hole 110 (diameter 7mm) diameter.In addition, the processing of pin-and-hole and E shape annular groove need be set on axle, not need to squeeze into pin and the operation that embeds E shape ring.

Have again, owing on the intermediate portion 122 of axle 12, flange 1221 is set, its diameter prevents axle 12 extraction forwards greater than the diameter of the circular port 1531a of the trough of belt circular port 1531 of axle guide plate 15, and other parts (revolution check plate 614) are set not needing to resemble in the past.

Therefore, can reduce 3 parts (pin 611, E shape are encircled 615, turned round check plate 614), simultaneously, not need to squeeze into pin and the operation that embeds E shape ring, assembly operation becomes easily, can shorten and assemble man-hour, the reduction manufacture cost.

(B) because the back of flange 1221 contacts with all surfaces of the front-end face 141 of helical spring 14, and helical spring 14 can not tilt, therefore have good stability, eliminated the driving plate that in the past once took place and suppressed shortcomings such as not good.

The present invention also comprises following form of implementation except that the foregoing description.

A. in the present embodiment, be metal bar material to be carried out Cold Forging make axle 12, but also can use the casting mold unitary moulding.

B. axle 12 also can be other metals, pottery, plastics etc.Have again, when using pottery, can utilize global formations such as rubber compacting and casting mold with plastic or other material.

C. in the above-described embodiments, projection 1222,1222 and groove 1531b, 1531c have 180 ° position relation respectively with two compositions, still, as long as can not embed, also can not be 180 ° in the scope of the use angle of revolution of axle 12.In addition, the number of projection and groove also can be three or one etc.

D. valve system M also goes in the piezoelectricity type gas valve G device in addition.

Claims (1)

1. operation equipment comprises:

Be provided with the substrate of through hole;

Have to the peripheral direction of circular port and make the trough of belt circular port of groove and the axle guide plate of giving prominence to aforesaid substrate;

Columniform axle, by the rear portion of passing above-mentioned through hole, intermediate portion, pass the anterior unitary moulding of above-mentioned trough of belt circular port, intermediate portion is bigger than the diameter of above-mentioned through hole, end difference is arranged and have the lip part bigger at intersection, and make the projection that combines with above-mentioned groove in the front of above-mentioned lip part than the diameter of above-mentioned trough of belt circular port with the rear portion; It is characterized in that, also comprise

The helical spring that the lip part of front end and above-mentioned axle joins and above-mentioned axial the place ahead is suppressed,

When pushing above-mentioned axle, above-mentioned projection is deviate from by above-mentioned groove, and axle promptly can rotate.

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