CN201035978Y - An explosion-proof horn - Google Patents
An explosion-proof horn Download PDFInfo
- Publication number
- CN201035978Y CN201035978Y CNU2007200508635U CN200720050863U CN201035978Y CN 201035978 Y CN201035978 Y CN 201035978Y CN U2007200508635 U CNU2007200508635 U CN U2007200508635U CN 200720050863 U CN200720050863 U CN 200720050863U CN 201035978 Y CN201035978 Y CN 201035978Y
- Authority
- CN
- China
- Prior art keywords
- back seat
- explosion
- loudspeaker
- bugle
- proof
- 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.)
- Expired - Fee Related
Links
- 241001503991 Consolida Species 0.000 claims description 21
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 210000004907 gland Anatomy 0.000 claims description 4
- 235000013824 polyphenols Nutrition 0.000 claims description 3
- 238000010892 electric spark Methods 0.000 abstract description 8
- 239000000428 dust Substances 0.000 abstract description 4
- 230000002238 attenuated effect Effects 0.000 abstract 1
- 239000002360 explosive Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229920001342 Bakelite® Polymers 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000004637 bakelite Substances 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Landscapes
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
本实用新型公开了一种防爆喇叭，包括后座、设置在后座前端的号角以及设置在后座后端的后盖，后座上设置有变压器组件和喇叭单元，号角上设置有反射盖，所述号角与后座之间、以及后座与后盖之间均为止口结构连接，接触面上均设置有两个以上的台阶，这样隔爆结合面的间隙被加长，后座内产生的电火花在间隙中行走时产生衰减，泄露到喇叭外面时已不足以点燃周围的粉尘或气体，达到防爆的目的。
The utility model discloses an explosion-proof loudspeaker, comprising a back seat, a horn arranged at the front end of the back seat and a back cover arranged at the rear end of the back seat, wherein a transformer assembly and a loudspeaker unit are arranged on the back seat, a reflection cover is arranged on the horn, the horn and the back seat, as well as the back seat and the back cover are connected by a stopper structure, and more than two steps are arranged on the contact surfaces, so that the gap of the explosion-proof joint surface is lengthened, and the electric spark generated in the back seat is attenuated when traveling in the gap, and is not enough to ignite surrounding dust or gas when leaking to the outside of the loudspeaker, thereby achieving the purpose of explosion-proof.
Description
Technical field
The utility model relates to the sound technique field, particularly a kind of loudspeaker that possess explosion prevention function.
Background technology
Existing loudspeaker, the bonnet that comprises back seat, is arranged on the bugle of back seat front and is arranged on the back seat back, back seat are provided with transformer device and loudspeaker unit, and bugle is provided with the reflection lid.Loudspeaker unit can produce electric spark in this loudspeaker use, electric spark leaks into the loudspeaker outside easily, when being used for occasions such as mine miner or petrochemical enterprise at loudspeaker, explosive dust or inflammable gas around electric spark can cause are blasted, serious accident takes place, and causes immeasurable loss to production.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of loudspeaker with explosion prevention function.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of explosion-proof loudspeaker, the bonnet that comprises back seat, is arranged on the bugle of back seat front end and is arranged on the back base rear end, back seat is provided with transformer device and loudspeaker unit, bugle is provided with reflection lid, between described bugle and the back seat and be fixing structure between back seat and the bonnet and be connected.
Described bugle and back seat be connected and back seat is the fixing structure with two above step surfaces with being connected of bonnet.
Be filled with resin in the space between described back seat and bugle.
Described loudspeaker unit is provided with transaudient gland bonnet.
The beneficial effects of the utility model are: between bugle and the back seat, being fixing structure between back seat and the bonnet is connected, and be provided with plural step on its surface of contact, the gap of flame proof faying face is elongated like this, when the electric spark that produces in the back seat is walked in the gap, do not have enough oxygen and produce decay, can not leak into the loudspeaker outside and light explosive dust or gas on every side, reach explosion-proof purpose.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing is a structural representation of the present utility model.
Embodiment
With reference to accompanying drawing, a kind of explosion-proof loudspeaker, the bonnet 3 that comprises back seat 2, is arranged on the bugle 1 of back seat 2 front ends and is arranged on back seat 2 rear ends, back seat 2 is provided with transformer device 14 and loudspeaker unit 12, bugle 1 is provided with reflection and covers 4, this back seat 2, bonnet 3 and reflection are covered 4 and are phenolics fat (bakelite) material, between described bugle 1 and the back seat 2 and be fixing structure between back seat 2 and the bonnet 3 and be connected; As a kind of specific embodiment of the utility model, described bugle 1 and back seat 2 be connected and back seat 2 is the fixing structure with two above step surfaces with being connected of bonnet 3.A plurality of step surfaces make the gap length of flame proof faying face of loudspeaker increase greatly, in the use, when the electric spark that produces in the back seat 2 is walked, do not produce decay in the gap because of there being enough oxygen, can not leak into the loudspeaker outside and light explosive dust or gas on every side, reach explosion-proof purpose.
As further improvement of the utility model, be filled with resin in the space that described back seat 2 and bugle are 1, install loudspeaker unit 12 and bugle 1 fastening in the actual production and by pouring into resin behind the electroacoustical measurement again, treat to encapsulate bonnet 3 again after resin becomes dry, this resin mass 16 all stops up forward all space in the back seat 2, avoids electric spark to leak from this position.
Improvement as a nearly again step of the present utility model, described loudspeaker unit 12 is provided with transaudient gland bonnet 13, described transaudient gland bonnet 13 is made by the stacked flame proof plate of stainless steel cloth, can be when not influencing sound wave and from then on penetrating, with the electric spark filtering that produces in the loudspeaker unit.
In addition, described bugle 1 is made by high strength, resistant to elevated temperatures phenolics fat (bakelite), and its thickness is thickeied to 12mm, can prevent that the loudspeaker inside Shi Buhui that blasts from destroying its shell mechanism, and the spark that blast is produced can not leak into the loudspeaker outside.
Above-mentioned just the utility model preferred embodiment but should not constitute restriction of the present utility model, so long as adopt the technical scheme that is equal to the utility model, and also should be within the protection domain of the invention.
Claims (5)
1. explosion-proof loudspeaker, the bonnet (3) that comprises back seat (2), is arranged on the bugle (1) of back seat (2) front end and is arranged on back seat (2) rear end, back seat (2) is provided with transformer device (14) and loudspeaker unit (12), bugle (1) is provided with reflection lid (4), it is characterized in that: between described bugle (1) and the back seat (2) and be fixing structure between back seat (2) and the bonnet (3) and be connected.
2. a kind of explosion-proof loudspeaker according to claim 1, it is characterized in that described bugle (1) and back seat (2) be connected and back seat (2) is the fixing structure with two above step surfaces with being connected of bonnet (3).
3. a kind of explosion-proof loudspeaker according to claim 1 and 2 is characterized in that being filled with resin in the space between described back seat (2) and bugle (1).
4. a kind of explosion-proof loudspeaker according to claim 3 is characterized in that described loudspeaker unit (12) is provided with transaudient gland bonnet (13).
5. a kind of explosion-proof loudspeaker according to claim 4 is characterized in that described bugle (1) made by phenolics, and its thickness is not less than 12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200508635U CN201035978Y (en) | 2007-04-28 | 2007-04-28 | An explosion-proof horn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200508635U CN201035978Y (en) | 2007-04-28 | 2007-04-28 | An explosion-proof horn |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201035978Y true CN201035978Y (en) | 2008-03-12 |
Family
ID=39196867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200508635U Expired - Fee Related CN201035978Y (en) | 2007-04-28 | 2007-04-28 | An explosion-proof horn |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201035978Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021395A (en) * | 2012-12-19 | 2013-04-03 | 衡阳合力工业车辆有限公司 | Flameproof contactless klaxon |
| CN113727413A (en) * | 2021-02-25 | 2021-11-30 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | Wireless relay type explosion-proof call system of coal conveying system |
| CN119402800A (en) * | 2025-01-03 | 2025-02-07 | 杭州海康威视数字技术股份有限公司 | Explosion-proof speakers and explosion-proof column speakers |
-
2007
- 2007-04-28 CN CNU2007200508635U patent/CN201035978Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021395A (en) * | 2012-12-19 | 2013-04-03 | 衡阳合力工业车辆有限公司 | Flameproof contactless klaxon |
| CN103021395B (en) * | 2012-12-19 | 2014-12-17 | 衡阳合力工业车辆有限公司 | Flameproof contactless klaxon |
| CN113727413A (en) * | 2021-02-25 | 2021-11-30 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | Wireless relay type explosion-proof call system of coal conveying system |
| CN119402800A (en) * | 2025-01-03 | 2025-02-07 | 杭州海康威视数字技术股份有限公司 | Explosion-proof speakers and explosion-proof column speakers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080312 Termination date: 20130428 |