CN110662125B - Full-plastic-shell high-waterproofness alarm device for engineering mechanical equipment - Google Patents
Full-plastic-shell high-waterproofness alarm device for engineering mechanical equipment Download PDFInfo
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- CN110662125B CN110662125B CN201910819909.2A CN201910819909A CN110662125B CN 110662125 B CN110662125 B CN 110662125B CN 201910819909 A CN201910819909 A CN 201910819909A CN 110662125 B CN110662125 B CN 110662125B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/44—Special adaptations for subaqueous use, e.g. for hydrophone
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention relates to the technical field of alarm devices of engineering trucks, in particular to a high-waterproofness alarm device of engineering mechanical equipment with an all-plastic shell, which comprises a shell and a waterproof loudspeaker component, wherein the shell is formed by high-strength plastic injection molding, the front end surface of the shell is provided with a sound outlet hole with a grid structure, the grid structure of the sound outlet hole comprises a plurality of first grid layers and a plurality of second grid layers which are distributed at intervals from front to back, the second grid layers are positioned at the inner sides of the first grid layers, the innermost side of the grid structure is provided with the second grid layers, the first grid layers comprise a plurality of first grid plates which are distributed at equal intervals, the second grid layers comprise a plurality of second grid plates which are distributed at equal intervals, the first grid plates and the second grid plates are distributed at intervals in the width direction of the shell, the included angles between the first grid plates and the second grid plates and the vertical direction are consistent, the structural strength is high, the waterproofness and the, the service life is long.
Description
Technical Field
The invention relates to the technical field of alarm devices of engineering vehicles, in particular to an alarm device with a full-plastic shell and high waterproofness for engineering mechanical equipment.
Background
At present, in the fields of engineering machinery, trucks, engineering vehicles, passenger vehicles and electric vehicles, voice alarm sounds and engine imitation sound alarms of the electric vehicles are used for safety; meanwhile, a higher waterproof grade is required, the protection grade of IP67 and IP69 is mainly met, and the main reason is that the working environment is relatively severe, so the alarm is frequently subjected to high-pressure water gun flushing and wading.
Most current alarms all adopt the speaker structure, because speaker vibration membrane basically adopts waterproof plastic film, but this diaphragm is only 0.1-1mm thickness, and alarm front end grid adopts the structure of windowing more moreover, so when receiving external high pressure and wash, receive the pressurized water very easily and damage, simultaneously because structural design is unreasonable, after the car crosses wading the environment and comes out, the water of the certain capacity of stock between speaker and the casing leads to the abnormal sound production of product.
Meanwhile, substances such as cooling liquid, gasoline, diesel oil and the like can exist in the engineering machinery alarm, and if the surface of the horn diaphragm is soaked for a long time and cannot be discharged in time, the loudspeaker diaphragm can be damaged for a long time, so that the product is abnormal in work and even damaged.
Disclosure of Invention
The invention aims to solve the technical problem of providing the engineering mechanical equipment alarm device with the full-plastic shell and high waterproofness, and the engineering mechanical equipment alarm device has the advantages of high structural strength, high waterproofness, high-pressure water impact resistance and long service life.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the alarm device for the engineering mechanical equipment with the high waterproofness and the full plastic shell comprises a shell and a waterproof loudspeaker assembly in the shell, wherein the shell is formed by high-strength plastic in an injection molding mode, a sound outlet hole with a grid structure is formed in the front end face of the shell, the grid structure of the sound outlet hole comprises a plurality of first grid layers and second grid layers which are distributed in a front-back alternate mode, the second grid layers are located on the inner sides of the first grid layers, the second grid layers are arranged on the innermost sides of the grid structures, the first grid layers comprise a plurality of first grid plates which are distributed at equal intervals, the width of the first grid plates increases progressively from the right front to the back, the width of the second grid plates comprises a plurality of second grid plates which are distributed at equal intervals, the width of the second grid plates decreases progressively from the right front to the back, the first grid plates and the second grid plates are distributed at intervals in the width direction of the shell, the first grid plates and the second grid plates are parallel, and included angles of the first grid plates and, the side of the shell is provided with a groove which is arranged along the front and back direction of the shell, and the width of the groove is gradually reduced from the front end to the back end of the shell to the middle.
Further, the shell include procapsid, back casing, go out the sound hole and set up in the preceding terminal surface of procapsid, waterproof speaker subassembly include waterproof speaker, waterproof line way board, waterproof speaker is fixed in the procapsid, waterproof speaker's pronunciation end is towards going out the sound hole, waterproof line way board sets up in the back casing, can dismantle the connection between procapsid, back casing, the front end of back casing is equipped with the spread groove, the rear end of procapsid is equipped with the connecting portion that imbeds in the spread groove, the rear end of procapsid still is equipped with the cover in the outside of connecting portion and establishes the outside connection edge of back casing front end, connection edge, connecting portion form the double-deck connection structure of being connected with back casing, the front end of back casing still is equipped with preceding protruding connection jack catch, connection edge is equipped with the connection catching groove of being connected jack catch buckle fit, the recess including being in the, The width of the first groove is decreased progressively from the front to the back, and the width of the second groove is decreased progressively from the back to the front.
Furthermore, the rear shell is provided with a wiring cavity, and a wiring terminal connected with the waterproof circuit board is arranged in the wiring cavity.
Furthermore, the width of the front end of the second grid plate is consistent with the width of the rear end of the grid plate of the first grid layer of the adjacent previous track, and the width of the front end of the first grid plate is consistent with the width of the rear end of the grid plate of the second grid layer of the adjacent previous track.
Furthermore, the distance between the first grid layer and the second grid layer is 1.1-1.5 mm.
Furthermore, the grid mechanism of the sound outlet hole comprises a first grid layer and a second grid layer arranged on the inner side of the first grid layer.
Furthermore, the cross section of the first grid plate is an isosceles trapezoid with a small front end and a large rear end, and the cross section of the second grid plate is an isosceles trapezoid with a large front end and a small rear end.
Furthermore, the front end face of the front shell is provided with a circular front convex part, the sound outlet hole is formed in the front convex part, the first grid layer forms the front end face of the front convex part, and the side face of the front convex part is a conical surface.
Furthermore, the included angle between the first grid plate and the vertical direction and the included angle between the second grid plate and the vertical direction are acute angles.
The invention has the beneficial effects that: by adopting the scheme, the method has the advantages that,
① the sound hole of the alarm device is a grid structure formed by multiple grid layers, can deal with the impact of all directions of high pressure water, resist, eliminate the impact caused by the high pressure water, avoid the high pressure water to directly impact the inside loudspeaker assembly, after wading, the water in the shell can rapidly flow out through the grid structure, avoid the accumulation of the inside water, avoid the loudspeaker assembly to contact water for a long time, the waterproof capability is strong, the high pressure water impact resistance is outstanding, the stability and the use effect of the alarm device are improved, and the alarm device is more suitable for the engineering machinery with the bad service environment and other vehicles.
② the grid structure composed of multiple grid layers has the effect of improving sound pressure for the alarm sound of the loudspeaker, improving the sound effect of the alarm sound, and improving the use effect.
Drawings
The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic longitudinal sectional structure diagram according to an embodiment of the present invention.
Fig. 3 is a front view of one embodiment of the present invention.
Fig. 4 is a left side view of one embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a front case according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a rear housing according to an embodiment of the invention.
Wherein: the loudspeaker comprises a front shell, a front convex part 11, a connecting part 12, a connecting edge 13, a first groove 14, a connecting buckle groove 15, a rear shell 2, a connecting groove 21, a connecting buckle 22, a second groove 23, a first grid layer 3, a first grid plate 31, a second grid layer 4, a second grid plate 41, a waterproof loudspeaker 5 and a waterproof circuit board 6.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Specifically, the width of the first grid plate 31 increases from front to back, the first grid plate 31 is in an isosceles trapezoid shape with a narrow front end and a narrow back end, the width of the second grid plate 41 decreases from front to back, the second grid plate 41 is in an isosceles trapezoid shape with a wide front end and a narrow back end, the side surfaces of the first grid plate and the second grid plate are inclined planes, the width of the back end of the first grid plate is consistent with the width of the front end of the second grid plate, the center of the second grid plate and the center between two adjacent first grid plates on the front side are positioned on the same plane, in the impact direction of high-pressure water flow, the structure has a complete blocking surface and effectively blocks water flow impact, and a space is arranged in the front-back direction, so that the water flow can rapidly flow out, and importantly, a conical pressurizing structure with a large inner end and a small outer end is formed between the second grid plates of the second grid layer on the inner side, so that the structure can guide sound of a loudspeaker, after guiding and increasing, the water flow guiding device is reflected on the outer end face of the second grid plate through the inner end face of the first grid plate and is diffused outwards, an inverted cone sound amplifying structure with a large outer end and a small inner end is formed between the first grid plates, the sound production effect of the loudspeaker is improved, the alarm sound pressure is improved, the propagation range is expanded, the alarm effect is improved, the distance between the first grid layer and the second grid layer is small, the arrangement is reasonable, the first grid plate and the second grid plate which are arranged at intervals in the front and at the back are matched to enable the shell of the water flow guiding device to respond to the impact of high-pressure water from all directions, the effect of quickly guiding and flowing out water flow in the shell is achieved, the transmission of sound waves of the loudspeaker is not influenced, the improvement of the alarm sound pressure is also achieved, the intensity of the.
Specifically, for the convenience of assembly, the front shell 1 and the rear shell 2 are detachably connected, the front end of the rear shell 2 is provided with a connecting groove 21, the rear end of the front shell 1 is provided with a connecting part 12 embedded into the connecting groove 21, the rear end of the front shell 1 is further provided with a connecting edge 13 covering the outside of the front end of the rear shell 1 outside the connecting part 12, the connecting edge 13 and the connecting part 12 form a double-layer connecting structure connected with the rear shell 2, the distance between the connecting part 12 and the connecting edge 13 can be consistent with the distance from the groove wall of the connecting groove 21 to the end face of the rear shell to form a mutually meshed plug-in connecting structure, in order to improve the reliability of connection, the front end of the rear shell 2 is further provided with a front convex connecting claw 22, the connecting edge 13 is provided with a connecting buckle groove 15 in snap fit with the connecting claw 22, the connecting claw 11 is clamped into the connecting buckle groove 15 to realize, Connecting portion are equipped with the buffering glue film with the double-layer connection structure's that the junction formed inner wall department, increase the friction, avoid wearing and tearing, inhale the shake buffering simultaneously, improve assembly strength, it is wear-resisting still to shake, increase of service life.
The lateral surface of the front shell 1 is provided with a plurality of first grooves 14 along the front-back direction of the shell, the width of the first grooves 14 decreases progressively from front to back, the first grooves 14 form a lateral rib structure of the front shell 1 to strengthen the longitudinal and transverse structural strength of the front shell and improve the shock resistance of the front shell, and form a buffer structure for reducing high-pressure water impact, the depth of the first grooves 14 decreases progressively from front to back, during the impact of water flow, the resistance of the first grooves to the water flow increases progressively in the backward flow of the water flow, the water flow impact decreases progressively, meanwhile, the first grooves guide the water flow outwards, so that the front shell has better functions of slowing down the impact and guide of the high-pressure water flow, the lateral surface of the rear shell 2 is provided with a plurality of second grooves 23 along the front-back direction of the shell, the width of the second grooves 23 decreases progressively from back to front, and the lateral rib structure of the rear shell 2 is, the longitudinal and transverse structural strength of the rear shell is enhanced, the shock resistance of the rear shell is improved, a buffer structure for reducing high-pressure water impact is formed, the depth of the second groove 23 is gradually reduced from back to front, when the water flow is impacted and flows forwards, the resistance of the second groove 23 to the water flow is gradually increased, the impact of the water flow is gradually weakened, simultaneously, second recess 23 outwards water conservancy diversion with rivers, make procapsid department have the better effect that slows down high-pressure water impact, the water conservancy diversion, first recess, the preceding casing of second recess, the reinforcing water conservancy diversion structure of back casing assembly back formation shell, slow down water impact, make water flow out fast, the structural strength of shell has been strengthened, the shock resistance is improved, especially, have fine decompression effect to high-pressure rivers, be equipped with the wiring chamber on the casing of back, the wiring intracavity is equipped with the terminal of being connected with waterproof circuit board, the loudspeaker assembly's of being convenient for connect the electricity and switch on.
Example 2: the difference between this embodiment and the implementation of 1 lies in that the grid structure at sound outlet includes twice first grid layer, twice second grid layer, and the second grid layer is in the inside on first grid layer, and the interval between second grid layer and the first grid layer is 1.1mm, and the second grid plate setting on second grid layer is in the middle department of the two adjacent first grid plates on preceding first grid layer, and the figure on grid layer is many, and is higher to the protecting against shock performance of high pressure water, increase of service life.
Example 3: the difference between this embodiment and the implementation of 1 lies in that the lattice structure at the sound outlet includes two first lattice layers, two second lattice layers, the second lattice layer is in the inside of first lattice layer, the interval between second lattice layer and the first lattice layer is 1.5mm, first grid plate, the contained angle of second grid plate and vertical direction is 60 °, the speed that water flows out in the casing is fast, the second grid plate of second lattice layer sets up the middle department at the two adjacent first grid plates of the first lattice layer of preceding, the figure of lattice layer is many, it is higher to the impact resistance of high pressure water, increase of service life.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiment according to the present invention are within the scope of the present invention.
Claims (9)
1. The alarm device for the engineering mechanical equipment with the high water resistance and the full plastic shell comprises a shell and a waterproof loudspeaker assembly in the shell, and is characterized in that the shell is formed by high-strength plastic in an injection molding mode, a sound outlet hole of a grid structure is formed in the front end face of the shell, the grid structure of the sound outlet hole comprises a plurality of first grid layers and second grid layers which are distributed front and back at intervals, the second grid layers are located on the inner side of the first grid layers, the innermost side of the grid structure is provided with the second grid layers, the first grid layers comprise a plurality of first grid plates distributed at equal intervals, the width of the first grid plates is gradually increased from front to back, the width of the second grid plates is gradually decreased from front to back, the width of the rear ends of the first grid plates is consistent with the width of the front ends of the second grid plates, and the first grid plates and the second grid plates are distributed at intervals in the horizontal direction of the distribution of the first grid layers, the first grid plate and the second grid plate are parallel, included angles between the first grid plate and the second grid plate and the vertical direction are consistent, grooves formed in the front and back direction of the shell are formed in the side face of the shell, and the width of each groove is gradually decreased from the front end to the back end of the shell to the middle of the shell.
2. The alarm device of engineering mechanical equipment with high waterproof performance and full plastic casing as claimed in claim 1, wherein the casing comprises a front casing and a rear casing, the sound outlet is disposed on the front end surface of the front casing, the waterproof speaker assembly comprises a waterproof speaker and a waterproof circuit board, the waterproof speaker is fixed in the front casing, the sound emitting end of the waterproof speaker faces the sound outlet, the waterproof circuit board is disposed in the rear casing, the front casing and the rear casing are detachably connected, the front end of the rear casing is provided with a connecting groove, the rear end of the front casing is provided with a connecting portion embedded in the connecting groove, the rear end of the front casing is provided with a connecting edge on the outer side of the connecting portion, the connecting edge and the connecting portion form a double-layer connecting structure connected with the rear casing, the front end of the rear casing is provided with a connecting claw protruding forward, and the connecting edge is provided with a connecting groove in snap fit with the connecting, the grooves comprise a first groove and a second groove, the first groove is located on the side face of the front shell, the second groove is located on the side face of the rear shell, the width of the first groove is decreased progressively from the front to the rear, and the width of the second groove is decreased progressively from the rear to the front.
3. The alarm device of engineering mechanical equipment with full plastic shell and high waterproofness as claimed in claim 2, wherein the rear shell is provided with a wiring cavity, and a wiring terminal connected with the waterproof circuit board is arranged in the wiring cavity.
4. The all-plastic casing high waterproof engineering mechanical equipment alarm device according to claim 1, wherein the width of the front end of the second grid plate is consistent with the width of the rear end of the grid plate of the first grid layer of the adjacent previous track, and the width of the front end of the first grid plate is consistent with the width of the rear end of the grid plate of the second grid layer of the adjacent previous track.
5. The alarm device of engineering mechanical equipment with full plastic shell and high waterproofness as claimed in claim 1, wherein the distance between the first grid layer and the second grid layer is 1.1-1.5 mm.
6. The alarm device of engineering mechanical equipment with full plastic casing and high waterproof performance as claimed in claim 1, wherein the grille mechanism of the sound outlet hole comprises a first grille layer and a second grille layer arranged inside the first grille layer.
7. The all-plastic casing high waterproof engineering mechanical equipment alarm device according to claim 1, wherein the cross section of the first grid plate is an isosceles trapezoid with a small front end and a large rear end, and the cross section of the second grid plate is an isosceles trapezoid with a large front end and a small rear end.
8. The alarm device of engineering mechanical equipment with full plastic shell and high waterproof performance as claimed in claim 2, wherein the front end face of the front shell is provided with a circular front protrusion, the sound outlet hole is formed at the front protrusion, the first grid layer forms the front end face of the front protrusion, and the side face of the front protrusion is a tapered surface.
9. The alarm device of engineering mechanical equipment with full plastic shell and high waterproofness as claimed in claim 1, wherein the included angle between the first grid plate and the vertical direction and the included angle between the second grid plate and the vertical direction are acute angles.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910819909.2A CN110662125B (en) | 2019-08-31 | 2019-08-31 | Full-plastic-shell high-waterproofness alarm device for engineering mechanical equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910819909.2A CN110662125B (en) | 2019-08-31 | 2019-08-31 | Full-plastic-shell high-waterproofness alarm device for engineering mechanical equipment |
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| CN110662125A CN110662125A (en) | 2020-01-07 |
| CN110662125B true CN110662125B (en) | 2020-08-04 |
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| CN208597170U (en) * | 2018-09-14 | 2019-03-12 | 嘉善意莱声电子有限公司 | A kind of water proof type loudspeaker of insert injection moulding package |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2201297Y (en) * | 1994-07-29 | 1995-06-21 | 黄有梓 | Backing alarm with enclosed outer casing |
| JP4302548B2 (en) * | 2004-02-18 | 2009-07-29 | オリンパス株式会社 | Cameras and electronic devices |
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| CN102984623A (en) * | 2012-11-03 | 2013-03-20 | 河南锐骑文化传播有限公司 | Waterproof speaker |
| CN204681582U (en) * | 2015-05-07 | 2015-09-30 | 江苏凯灵汽车电器有限公司 | There is the scroll casing type car horn of water-proof function |
| CN105818739A (en) * | 2016-03-11 | 2016-08-03 | 汉得利（常州）电子股份有限公司 | Vehicle-mounted alarm device |
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| CN110662125A (en) | 2020-01-07 |
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