There is the red board of lock functionTechnical field
The present invention relates to traffic sign technical field, particularly relate to the red board with lock function that a kind of applicable school bus uses.
Background technology
For picking the school bus of student specially in the process of moving, often need to stop on seething highway to execute the task, especially school bus needs often to be parked in roadside, student is allowed to get on or off the bus, if there is no eye-catching alarm signal, other passing hot-shorts are easy to threaten to the life of student, the compartment of therefore school bus outside can fixedly mount red board to guarantee that student rides safety.Existing school bus red board generally comprises control box and warning sign, and control box is fixed on compartment, and warning sign is connected with control box by pivoted arm.When school bus stagnation of movement, warning sign launches, and in order to point out vehicular traffic and pedestrian, is then packed up by warning sign when driving of school bus.Warning sign is affixed on control box surface when collapsed state after only being packed up by pivoted arm, and does not have other anchor fitting to fix warning sign, therefore rocks owing to jolting when driving of school bus, and warning sign easily loosens and comes off, and is unfavorable for the traffic safety of school bus.
Summary of the invention
The warning sign that the present invention is directed to existing school bus red board rocks the problem of easy loose or dislocation owing to jolting when driving of school bus, provide a kind of rocking owing to jolting when driving of school bus can not the red board with lock function of loose or dislocation, increases the safety of school bus.
Object of the present invention is mainly achieved by following proposal: a kind of red board with lock function, control box and the warning sign of motor is provided with in comprising, one end of described control box arranges pivoted arm, described warning sign is connected with control box by pivoted arm, the other end of described control box is provided with warning sign blocking device, described warning sign blocking device is electrically connected with vehicle power, described warning sign blocking device comprises electric pushrod and latch hook, described electric pushrod is built in control box, described latch hook is arranged at the control box other end relative with warning sign, described electric pushrod is connected by elastomeric element with latch hook.
Adopt this programme, at the other end of control box, warning sign blocking device is set, like this when school bus warning sign withdrawal in motion, now warning sign is automatically locked by warning sign blocking device, prevent school bus from loosening when long-term road jolts and rocks and causing school bus board gap greatly even to drop, when school bus stagnation of movement, warning sign blocking device is opened, warning sign launches, and therefore this red board has the high advantage of long service life, safety.
When school bus needs at curb parking, vehicle power is electric pushrod power transmission, and now electric pushrod is pushed open by the latch hook of elastomeric element by locking warning sign, and warning sign is launched by pivoted arm under the effect of motor.After warning sign launches, electric pushrod and vehicle power disconnect, and latch hook is playbacked by elastomeric element; When warning sign is packed up, electric pushrod promotes latch hook again, and warning sign is embedded in the cavity of latch hook, and now latch hook is playbacked by elastomeric element, is locked by warning sign, therefore there will not be and produces loosening when school bus when jolting and rocking and come off.
As preferably, described elastomeric element is spring.Spring structure is simple, is easy to produce, and cost is low simultaneously, is conducive to the productive costs reducing product.
As preferably, described latch hook is provided with handle.When vehicle power breaks down, latch hook can be pulled open by handle, warning sign is launched, realize manually pulling open and locking.
As preferably, the other end relative with warning sign of control box is also provided with pressing plate.Arranging pressing plate is to fall within pressing plate when warning sign is packed up, and plays buffering and the effect protected to warning sign.
As preferably, described warning sign is provided with and surrounds some LED that pattern is " stopping " word.Pattern on existing warning sign mostly is and sprays paint or be pasted on warning sign, and period of service is longer easily to be fallen paint or comes off afterwards, and school bus is when parking at night, and the pattern on warning sign is not easily seen.Utilize some LED patterns to surround " stopping " word pattern, then the phenomenon that there will not be to fall paint or come off, still can play good warning function at night simultaneously.
As preferably, described motor is stepping motor.
In a word, the present invention arranges warning sign blocking device in red board, make school bus in motion warning sign not easily loosen and cause and come off, improve the safety of school bus.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is control box structural representation;
Structural representation when Fig. 3 is warning sign withdrawal.
Illustrate: 1-control box, 2-warning sign, 3-pivoted arm, 4-warning sign blocking device, 5-electric pushrod, 6-latch hook, 7-shakes hands, 8-pressing plate, 9-spring, 10-LED lamp.
Detailed description of the invention
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
A kind of red board, as shown in Figure 1, be provided with control box 1 and the warning sign 2 of stepping motor in comprising, one end of described control box 1 arranges pivoted arm 3, and described warning sign 2 is connected with control box 1 by pivoted arm 3.The other end of described control box 1 is provided with warning sign blocking device 4, as shown in Figure 2, warning sign blocking device comprises electric pushrod 5 and latch hook 6, affiliated electric pushrod 5 is built in control box 1, described latch hook 6 is arranged at the other end relative with warning sign of control box 1, and described electric pushrod 5 is connected by spring 9 with latch hook 6.Latch hook is also provided with handle 7, and the other end relative with warning sign of control box 1 is also provided with pressing plate 8.
When school bus needs at curb parking, vehicle power is electric pushrod 5 power transmission, and now the latch hook 6 blocking warning sign 2 is pushed open by spring by electric pushrod 5, and warning sign 2 is launched by pivoted arm 3 under the effect of motor.Warning sign 2 launches rear electric pushrod 5 and disconnects with vehicle power, and latch hook 6 is playbacked by spring 9; When warning sign 2 is packed up, electric pushrod 5 promotes latch hook 6 again, and make warning sign 2 embed in the cavity of latch hook 6, now latch hook 6 is playbacked by spring 9, is locked by warning sign 2, as shown in Figure 3.When vehicle power breaks down, 7 by shaking hands latch hook 6 can pull open or cuts out, realize manual unlocking and the locking of warning sign.Thus actv. prevents school bus from loosening when jolting and rocking and coming off, and extends the service life of red board, improves the safety of school bus.
In the present invention, warning sign 2 is provided with and surrounds some LED 10 that pattern is " stopping " word.Spray paint or be pasted on warning sign 2 because the pattern on existing warning sign 2 mostly is, period of service is longer easily to be fallen paint or comes off afterwards, and school bus is when parking at night, and the pattern on warning sign 2 is not easily seen.Utilize some LED 10 patterns to surround " stopping " word pattern, then the phenomenon that there will not be to fall paint or come off, still can play good warning function at night simultaneously.
Should be understood that this embodiment is only not used in for illustration of the present invention to limit the scope of the invention.In addition should understand, after the content of having read the present invention's instruction, those skilled in the art fall within the application's appended claims limited range equally to the equivalent form of value that the structures such as the elastic component of warning sign blocking device, connection electric pushrod and latch hook are changed or revised.