CN2694466Y - Blast switch - Google Patents
Blast switch Download PDFInfo
- Publication number
- CN2694466Y CN2694466Y CN 200320122640 CN200320122640U CN2694466Y CN 2694466 Y CN2694466 Y CN 2694466Y CN 200320122640 CN200320122640 CN 200320122640 CN 200320122640 U CN200320122640 U CN 200320122640U CN 2694466 Y CN2694466 Y CN 2694466Y
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- CN
- China
- Prior art keywords
- reed
- blast switch
- main casing
- air chamber
- contact
- 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.)
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Abstract
The utility model relates to a blast switch, comprising a shell cover (1), a main shell (11) and a diaphragm (2). The diaphragm (2) is clamped by the shell cover (1) and the main shell (11); the cavity constituted by the shell cover and the main shell is divided into a left air chamber (23) and a right air chamber (24) by the diaphragm (2); the left air chamber and the right air chamber are respectively provided with intake passages (21) and (22); a fixed contact (4) and a fixed contact (6) are fixedly connected on the main shell (11), a spring strip (8) with a movable contact (5) is fixedly connected to the main shell (11), and the outer wall of the main shell (11) is connected with an adjusting screw (9) which is sheathed with a compression spring (10); the right side of the diaphragm (2) is appressed a pressed plate (3), the right side of the pressed plate (3) is fixedly connected with an ejector pin (13), and the right end of the ejector pin (13) is positioned at the convex surface of the spring strip (8). The utility model has the advantages of large coverage range of parameters, sensitive action and extensive applicability, adopting the new type spring strip structure. The build-in microswitch has compact structure, impact resistance, falling resistance and good reliability.
Description
Technical field
The utility model relates to a kind of control switch, relates in particular to a kind of blast switch by gas pressure control.It is applied in gas heater and the domestic gas boiler, to improve the safety in utilization of gas heater.
Background technology
At present on the market with gas heater supporting several blast switchs are arranged, as disclosed a kind of " suction type blast switch " in the Chinese patent specification 99229434.7, as shown in Figure 4, it comprises left shell 1, right shell body 9 and diaphragm 8, being fixed with support 3, one sensitive switches 13 on the left shell 1 is installed on the support 3.Diaphragm 8 is by left shell 1 and right shell body 9 clampings, and the cavity that left shell 1 and right shell body 9 are formed is separated into left air chamber 2 and right air chamber 10, and left air chamber 2 has blow vent 15, and right air chamber 10 has blow vent 14; Through hole 11 places of left shell are provided with and touch film 12, and this touches film 12 by left shell 1 and support 3 clampings, touch film 12 centers and have contact 121, and the left side of contact 121 can contact with sensitive switch 13, and the right side can contact with diaphragm 8; Diaphragm 8 right sides have right step 81, one liners 4 and a spring 6 is sleeved on the right step 81, and spring 6 is resisted against on the liner 4 at end, and right-hand member is resisted against on the adjustment screw 5 with screw 7 thread connection of right shell body 9.When the air pressure rated value of right air chamber 10 and left air chamber 2 is constant, blast switch is in Chang Kai or normally off, therein during the air pressure change of an air chamber, it is big that the active force of 8 pairs of springs 6 of diaphragm also can diminish or become, thereby make diaphragm 8 that motion to the left or to the right take place, blast switch transfers to normally closed or by the normally closed normally open that transfers to by often opening.This blast switch control range is wide, and sensitivity is higher.Yet it connects the moving construction of switch that declines outside adopting, and volume is bigger.
Summary of the invention
The purpose of this utility model is exactly in order to overcome above-mentioned weak point of the prior art, and a kind of compact conformation and higher blast switch of sensitivity that adopts novel reed and normally-closed contact design is provided.
The purpose of this utility model is by providing a kind of blast switch with following structure to realize, it comprises case lid, main casing and diaphragm, described diaphragm is by described case lid and described main casing clamping, described diaphragm is separated into left air chamber and right air chamber with the cavity of described case lid and main casing composition, described left air chamber is provided with the inlet channel of a malleation, and described right air chamber is provided with the inlet channel of a negative pressure.
Be fixed with the contact of two band fixed contacts on the described main casing, the affixed reed of described main casing, described leaf end connects the contact of a drive contact, the sidewall of described main casing is provided with one and adjusts screw rod, suit one compression spring on the described adjustment screw rod, the right flank of described diaphragm is close to a compression plate, the affixed push rod of described compression plate right flank, and the right-hand member of described push rod is positioned in the aperture of reed.
Described main casing internal fixation connects a pillar, and an end of described reed is fixed on the described pillar.The middle part of described reed be provided with one have in the bow reed of bow face and outer bow face, described bow reed has one " Π " font cavity.An end of also close moving contact in " Π " font cavity of described reed, be provided with two boss of vertically arranging along described reed, between described two boss a helical spring is set, described helical spring is used to improve the sensitivity of the action of described reed; Therefore, described reed shape is relatively unique, the integral structure of force, fulcrum and the lever that adopts, make the elasticity of described reed and the coefficient of elasticity reasonable disposition of described spring, to realize that blast switch parameter coverage of the present utility model enlarges, the blast switch that can be matched in multiple model uses.
Described moving contact and described two fixed contacts are positioned on the same axis.The fixed touching plate of described two contact-carryings connects two binding posts respectively, and described binding post is connected with the single-chip microcomputer of gas heater by lead.
The outer wall of described main casing is provided with a screw, described adjustment screw rod and described screw thread connection.
One end of described compression spring is positioned the inner face of described adjustment screw rod, and the other end of described compression spring is positioned the interior bow face of described bow reed.
The right-hand member of described push rod is positioned on the outer bow face of the protruding reed of described bow.
Described main casing inherence is parallel in the transverse plane of described reed, and two steps are set, and fixedly installs one between described two steps and limits bar, is used to limit the actuating range of reed, and guarantees described helical spring action stability and reliability.
The fixed touching plate of described band fixed contact connects a binding post, and the outside of described fixed contact is connected with the set screw nail, and described set screw nail is threaded mutually with the middle part of described binding post.
The outside of described main casing connects an installing rack, is used for the utility model blast switch is installed in the housing of gas heater.Described case lid and described main casing adopt high-quality heatproof, fire-retardant engineering plastics, can be shock-resistant.
Compared with prior art, advantage of the present utility model is: 1. adopt novel reed structure, the parameter coverage enlarges, and is active in one's movements, and applicability is wide; 2. built-in microswitch structure compactness, is fallen good reliability at impact resistance; 3. normally-closed contact band adjustable screw pin structure changes the history that domestic blast switch can not be regulated operating point break-make difference, thereby can be adjusted to the "on" and "off" operating point simultaneously the optimum value of blast switch technical parameter.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is a reed structure schematic diagram of the present utility model;
Fig. 4 is a kind of prior art constructions schematic diagram;
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Fig. 1 to Fig. 3 illustrates an execution mode of the utility model blast switch.The utility model blast switch comprises case lid 1, main casing 11 and diaphragm 2, described diaphragm 2 is by described case lid 1 and 11 clampings of described main casing, described diaphragm 2 is separated into left air chamber 23 and right air chamber 24 with the cavity of described case lid 1 and main casing 11 compositions, described left air chamber 23 is provided with an inlet channel 22, and described right air chamber 24 is provided with an inlet channel 21; Be fixed with two bands on the described main casing 11 and decide the contact of fixed contact 4 and the contact of fixed contact 6.
Described main casing 11 internal fixation connect a pillar 28, and an affixed reed 8 on the described pillar 28, described reed 8 are provided with a middle part and have the protruding reed 85 of bow and have one " Π " font cavity 83; Another termination of described reed 8 connects the contact of a moving contact 5, and described moving contact 5 is positioned on the same axis with described fixed contact 4, fixed contact 6.An end of also close moving contact 5 is provided with two boss of vertically arranging along described reed 8 81 and 82 in " Π " font cavity 83 of described reed, and a helical spring 7 is set between the described boss 81 and 82.Described helical spring 7 is used to improve the sensitivity of the action of described reed 8.
The outer wall of described main casing 11 is provided with a screw 27, and thread connection one is adjusted screw rod 9 in the described screw 27.Suit one compression spring 10 on the described adjustment screw rod 9, an end of described compression spring 10 is positioned the inner face of described adjustment screw rod 9, and the other end of described compression spring 10 is positioned the inner concave 851 of the protruding reed 85 of described bow.Described compression spring 10 is used for regulating its elastic force by the move left and right of described adjustment screw rod 9, promptly is used for regulating the big few of the variation difference of its elastic force when adapting to the variation of described right air chamber 24 and one of them air pressure rated value of left air chamber 23.
Described fixed contact is that normally-closed contact 6 is a kind of and structure being integral of leading-out terminal.The fixed touching plate of described band fixed contact 6 connects a binding post 17, and the outside of described fixed contact 6 is connected with set screw nail 29, and described set screw nail 29 is threaded mutually with the middle part of described binding post 17.
Relative distance between fixed contact 6 and described moving contact 5 and the fixed contact 4 can be regulated by set screw nail 29, thereby overcome the shortcoming that common blast switch break-make difference can not the regulated at will technical parameter, can accurately be adjusted to optimum value to the "on" and "off" operating point.
The right flank of described diaphragm 2 is close to a compression plate 3, the affixed push rod 13 of described compression plate 3 right flanks, and the right-hand member of described push rod 13 is located the outer bow face 852 of described bow reed 85.
Described main casing 11 is provided with two steps 25 in the transverse plane that is parallel to reed 8, fixedly install one between described two steps 25 and limit bar 26; Described qualification bar 26 is used to limit the actuating range of reed 8, and guarantees the action stability and the reliability of described helical spring 7.
The outside of described main casing 11 connects an installing rack 12, is used for the utility model blast switch is installed in the housing of gas heater.The fixed touching plate of described band fixed contact 4,6 connects a binding post 17,18 respectively, and described binding post 17,18 is connected with the single-chip microcomputer of gas heater by lead.
When the air pressure rated value of described right air chamber 24 and left air chamber 23 is constant, blast switch is in Chang Kai or normally off, and when one of them air pressure rated value of described right air chamber 24 and left air chamber 23 changes, it is big that the active force of 2 pairs of reeds 8 of diaphragm also can diminish or become, thereby make described reed 8 promote moving contact 5 motion to the left or to the right takes place, contact with described fixed contact 4, fixed contact 6 by moving contact 5, make blast switch transfer to normally closed or by the normally closed normally open that transfers to by often opening.
Claims (10)
1. blast switch, comprise case lid (1), main casing (11) and diaphragm (2), described diaphragm (2) is by described case lid (1) and described main casing (11) clamping, described diaphragm (2) is separated into left air chamber (23) and right air chamber (24) with the cavity of described case lid (1) and main casing (11) composition, described left air chamber (23) is provided with an inlet channel (22), described right air chamber (24) is provided with an inlet channel (21), it is characterized in that: be fixed with the contact of two band fixed contacts (4) and the contact of band fixed contact (6) on the described main casing (11), the affixed reed of described main casing (11) (8), described reed (8) connects the contact of a moving contact (5), the outer wall of described main casing (11) connects one and adjusts screw rod (9), described adjustment screw rod (9) is gone up suit one compression spring (10), the right flank of described diaphragm (2) is close to a compression plate (3), the affixed push rod of described compression plate (3) right flank (13), the right-hand member of described push rod (13) is positioned in the aperture of reed.
2. blast switch according to claim 1 is characterized in that: described main casing (11) internal fixation connects a pillar (28), and an end of described reed (8) is fixed on the described pillar (28).
3. blast switch according to claim 1 is characterized in that: the middle part of described reed (8) is provided with a bow reed (85) that has interior bow face (851) and an outer bow face (852), and described bow reed (85) has one " Π " font cavity (83).
4. blast switch according to claim 3, it is characterized in that: an end of also close described moving contact in " Π " font cavity (83) of described reed, be provided with two boss of vertically arranging along described reed (8) (81) and (82), a helical spring (7) is set between described boss (81) and (82).
5. blast switch according to claim 1 is characterized in that: described moving contact (5) is positioned on the same axis with described fixed contact (4), fixed contact (6).
6. blast switch according to claim 1 is characterized in that: the outer wall of described main casing (11) is provided with a screw (27), described adjustment screw rod (9) and described screw (27) thread connection.
7. blast switch according to claim 1, it is characterized in that: an end of described compression spring (10) is positioned the inner face of described adjustment screw rod (9), and the other end of described compression spring (10) is positioned the interior bow face (851) of described bow reed.
8. blast switch according to claim 1 is characterized in that: the right-hand member of described push rod (13) is positioned on the outer bow face (852) of described bow reed (85).
9. blast switch according to claim 1, it is characterized in that: described main casing (11) inherence is parallel in the transverse plane of described reed (8), two steps (25) are set, fixedly install one between described two steps (25) and limit bar (26).
10. blast switch according to claim 1, it is characterized in that: the fixed touching plate of described band fixed contact (6) connects a binding post (17), the outside of described fixed contact (6) is connected with set screw nail (29), and described set screw nail (29) is threaded mutually with the middle part of described binding post (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320122640 CN2694466Y (en) | 2003-12-22 | 2003-12-22 | Blast switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320122640 CN2694466Y (en) | 2003-12-22 | 2003-12-22 | Blast switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2694466Y true CN2694466Y (en) | 2005-04-20 |
Family
ID=34762596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320122640 Expired - Fee Related CN2694466Y (en) | 2003-12-22 | 2003-12-22 | Blast switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2694466Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101930872A (en) * | 2009-06-26 | 2010-12-29 | 路锦春 | Improved gas differential pressure switch |
| CN103646821A (en) * | 2013-12-04 | 2014-03-19 | 佛山市顺德区奇林电气有限公司 | Magnetic reed pipe conductive wind-pressure switch |
| CN104048718A (en) * | 2014-06-10 | 2014-09-17 | 成都秦川科技发展有限公司 | Pressure sensor special for secure cut-off type intelligent gas meter |
| CN106150112A (en) * | 2015-04-17 | 2016-11-23 | 张成芳 | A kind of wall-building machine mortar induction controller |
-
2003
- 2003-12-22 CN CN 200320122640 patent/CN2694466Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101930872A (en) * | 2009-06-26 | 2010-12-29 | 路锦春 | Improved gas differential pressure switch |
| CN103646821A (en) * | 2013-12-04 | 2014-03-19 | 佛山市顺德区奇林电气有限公司 | Magnetic reed pipe conductive wind-pressure switch |
| CN103646821B (en) * | 2013-12-04 | 2016-08-17 | 佛山市顺德区奇林电气有限公司 | A kind of blast switch of magnetic tongue tube conduction |
| CN104048718A (en) * | 2014-06-10 | 2014-09-17 | 成都秦川科技发展有限公司 | Pressure sensor special for secure cut-off type intelligent gas meter |
| CN106150112A (en) * | 2015-04-17 | 2016-11-23 | 张成芳 | A kind of wall-building machine mortar induction controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |