CN204204742U - Blast switch - Google Patents
Blast switch Download PDFInfo
- Publication number
- CN204204742U CN204204742U CN201420639114.6U CN201420639114U CN204204742U CN 204204742 U CN204204742 U CN 204204742U CN 201420639114 U CN201420639114 U CN 201420639114U CN 204204742 U CN204204742 U CN 204204742U
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- China
- Prior art keywords
- switch
- left shell
- air chamber
- shell body
- fore
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Abstract
The utility model discloses a kind of blast switch, comprise left shell, right shell body and sensitive switch, left shell is fixed with switch bracket, switch bracket installs sensitive switch, be clamped with diaphragm between left shell and right shell body, this diaphragm by left shell and right shell body composition cavity be divided into left air chamber and right air chamber, left shell with right shell body is equipped with the air vent hole be communicated with right air chamber with left air chamber, there is through hole in the middle of left shell, between switch bracket and through hole, clamp teleblem; Teleblem central authorities are provided with blind hole, and blind hole central authorities are provided with switch fore-set, conflict all the time in the button position of switch fore-set and sensitive switch, and switch fore-set material is rigid plastics.The utility model overcomes teleblem and sensitive switch in prior art and adopts rubber bumps as the defect of contact, utilizes on teleblem and arranges rigid plastics fore-set, ensure that fore-set is not yielding after extrusion, improves useful life and the accuracy of product.
Description
Technical field
The utility model relates to a kind of blast switch, particularly a kind of blast switch improving structure between teleblem and sensitive switch.
Background technology
Existing baroswitch, it comprises left shell, right shell body and diaphragm, left shell is fixed with support, one sensitive switch is rack-mount, diaphragm is clamped by left shell and right shell body, and the cavity of left shell and right shell being stopped composition is separated into left air chamber and right air chamber, left air chamber has blow vent, and right air chamber also has blow vent; The through hole of left shell is provided with tactile film, and this tactile film is clamped by left shell and support, tactile center membrane has contact, it is right that the left side of contact and the triggering of sensitive switch are rectified, right side can with film contact: the right side of diaphragm has right step, one liner and a spring housing are contained on right step, and the left end of spring is resisted against on liner, and right-hand member leans against on the adjustment screw that is placed in the middle of right shell body in screw.
The blast switch of said structure is adopted to be connected with the external world by the blow vent of left and right air chamber, so malleation or negative pressure can be utilized separately to control diaphragm action with left air chamber or right air chamber, also can work by left and right air chamber simultaneously, diaphragm action is controlled, thus applied range by the malleation of left and right air chamber and the pressure reduction of negative pressure.
But be mainly used in the environment of the high-temp combustions such as family expenses forced air ventilation gas heater due to this type of blast switch, the touch center of prior art is as contact with the integrated rubber bumps of touch, in high temperature environments, rubber contact can become more soft, blast switch is very responsive for the change of pressure, once rubber contact deliquescing, the sensitivity of connected sensitive switch will be had a greatly reduced quality, and have impact on precision and the useful life of whole blast switch.
Utility model content
(1) technical problem that will solve
The purpose of this utility model will overcome above-mentioned shortcoming exactly, aims to provide a kind of blast switch.
(2) technical scheme
For solving the problem, the utility model proposes a kind of blast switch, comprise left shell, right shell body and sensitive switch, left shell is fixed with switch bracket, and switch bracket installs sensitive switch, is clamped with diaphragm between left shell and right shell body, the cavity of left shell and right shell body composition is divided into left air chamber and right air chamber by this diaphragm, left shell with right shell body is equipped with the air vent hole be communicated with right air chamber with left air chamber, have through hole in the middle of left shell, between switch bracket and through hole, clamp teleblem; Diaphragm central authorities are fixed with the protruding balancing patch of band, right shell body central authorities are provided with set screw and regulating spring, this regulating spring is between set screw and balancing patch, described teleblem central authorities are provided with blind hole, described blind hole central authorities are provided with switch fore-set, conflict all the time in the button position of described switch fore-set and sensitive switch, described switch fore-set material is rigid plastics.
Further, left shell is provided with screw hole, and described left shell and right shell body are screwed.
Further, seamless welding between described balancing patch and diaphragm.
Further, described left shell or right shell body are provided with fixed support.
(3) beneficial effect
Compared with prior art, the utility model has the following advantages: overcome teleblem and sensitive switch in prior art and adopt rubber bumps as the defect of contact, utilize on teleblem and rigid plastics fore-set is set, ensure that fore-set is not yielding after extrusion, improve useful life and the accuracy of product.
Accompanying drawing explanation
Fig. 1 is the explosive view of blast switch of the present utility model;
Fig. 2 is the cutaway view of blast switch of the present utility model;
Fig. 3 is the teleblem of blast switch of the present utility model and the structural representation of left shell.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples for illustration of the utility model, but are not used for limiting scope of the present utility model.
As depicted in figs. 1 and 2, blast switch of the present utility model, comprise left shell 1, right shell body 2 and sensitive switch 3, left shell 1 is fixed with switch bracket 32, switch bracket 32 is installed sensitive switch 3, diaphragm 4 is clamped with between left shell 1 and right shell body 2, the cavity that left shell 1 and right shell body 2 form is divided into left air chamber 11 and right air chamber 21 by this diaphragm 4, left shell 1 and right shell body 2 are equipped with air vent hole, through hole 13 is had in the middle of left shell 1, the left air vent hole 12 be communicated with left air chamber 11, the right air vent hole 22 be communicated with right air chamber 21, teleblem 5 is clamped between switch bracket 32 and through hole 13, diaphragm 4 central authorities are fixed with the protruding balancing patch 6 of band, right shell body 2 central authorities are provided with set screw 7 and regulating spring 8, set screw 7 and regulating spring 8, for regulating the initial pressure of this partial pressure switch, play the effect of fine setting, and this regulating spring 8 is between set screw 7 and balancing patch 6, as shown in Figure 3, described teleblem 5 central authorities are provided with blind hole 51, and described blind hole 51 central authorities are provided with switch fore-set 52, and described switch fore-set 52 is conflicted all the time with the button position 31 of sensitive switch 3, and described switch fore-set 52 material is rigid plastics.
Left shell 1 is provided with screw hole 14, described left shell 1 and right shell body 2 are screwed, object is to be easy for installation and removal, the housing of the partial pressure switch of prior art adopts clamping or ultrasonic bonding, the sealing means of prior art causes dismounting difficulty, then cannot dismantling of ultrasonic bonding, makes troubles to maintenance.
Seamless welding between described balancing patch 6 and diaphragm 4, ensure that diaphragm position is air tight.
Described left shell 1 or right shell body 2 are provided with fixed support 9, for being fixed on outside plant.
The utility model overcomes teleblem and sensitive switch in prior art and adopts rubber bumps as the defect of contact, utilizes on teleblem and arranges rigid plastics fore-set, ensure that fore-set is not yielding after extrusion, improves useful life and the accuracy of product.
Below be only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (4)
1. a blast switch, comprise left shell (1), right shell body (2) and sensitive switch (3), left shell (1) is fixed with switch bracket (32), switch bracket (32) is installed sensitive switch (3), diaphragm (4) is clamped with between left shell (1) and right shell body (2), the cavity that left shell (1) and right shell body (2) form is divided into left air chamber (11) and right air chamber (21) by this diaphragm (4), left shell (1) with right shell body (2) is equipped with the air vent hole be communicated with right air chamber (21) with left air chamber (11), through hole (13) is had in the middle of left shell (1), teleblem (5) is clamped between switch bracket (32) and through hole (13), diaphragm (4) central authorities are fixed with the protruding balancing patch (6) of band, right shell body (2) central authorities are provided with set screw (7) and regulating spring (8), this regulating spring (8) is between set screw (7) and balancing patch (6), it is characterized in that: described teleblem (5) central authorities are provided with blind hole (51), described blind hole (51) central authorities are provided with switch fore-set (52), described switch fore-set (52) is conflicted all the time with the button position of sensitive switch (3), and described switch fore-set (52) material is rigid plastics.
2. blast switch according to claim 1, is characterized in that: left shell (1) is provided with screw hole (14), and described left shell (1) and right shell body (2) are screwed.
3. blast switch according to claim 2, is characterized in that: seamless welding between described balancing patch (6) and diaphragm (4).
4. blast switch according to claim 3, is characterized in that: described left shell (1) or right shell body (2) are provided with fixed support (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420639114.6U CN204204742U (en) | 2014-10-29 | 2014-10-29 | Blast switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420639114.6U CN204204742U (en) | 2014-10-29 | 2014-10-29 | Blast switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204204742U true CN204204742U (en) | 2015-03-11 |
Family
ID=52662671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420639114.6U Active CN204204742U (en) | 2014-10-29 | 2014-10-29 | Blast switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204204742U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362038A (en) * | 2014-10-29 | 2015-02-18 | 余姚市嘉荣电子电器有限公司 | Wind pressure switch |
| CN105047473A (en) * | 2015-07-28 | 2015-11-11 | 东莞市康发特塑胶制品有限公司 | Automatic control differential pressure switch |
-
2014
- 2014-10-29 CN CN201420639114.6U patent/CN204204742U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362038A (en) * | 2014-10-29 | 2015-02-18 | 余姚市嘉荣电子电器有限公司 | Wind pressure switch |
| CN105047473A (en) * | 2015-07-28 | 2015-11-11 | 东莞市康发特塑胶制品有限公司 | Automatic control differential pressure switch |
| CN105047473B (en) * | 2015-07-28 | 2017-08-11 | 东莞市康发特塑胶制品有限公司 | Automatic control type pressure difference switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |