CN111409588B - Automobile safety warning system - Google Patents
Automobile safety warning system Download PDFInfo
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- CN111409588B CN111409588B CN202010369319.7A CN202010369319A CN111409588B CN 111409588 B CN111409588 B CN 111409588B CN 202010369319 A CN202010369319 A CN 202010369319A CN 111409588 B CN111409588 B CN 111409588B
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- 238000001514 detection method Methods 0.000 claims abstract description 87
- 238000004804 winding Methods 0.000 claims abstract description 30
- 238000003780 insertion Methods 0.000 claims abstract description 3
- 230000037431 insertion Effects 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims description 31
- 239000004033 plastic Substances 0.000 claims description 15
- 229920003023 plastic Polymers 0.000 claims description 15
- 230000001939 inductive effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 3
- 210000002105 tongue Anatomy 0.000 description 12
- 208000027418 Wounds and injury Diseases 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000001976 improved effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/48—Control systems, alarms, or interlock systems, for the correct application of the belt or harness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/48—Control systems, alarms, or interlock systems, for the correct application of the belt or harness
- B60R2022/4808—Sensing means arrangements therefor
- B60R2022/4816—Sensing means arrangements therefor for sensing locking of buckle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/48—Control systems, alarms, or interlock systems, for the correct application of the belt or harness
- B60R2022/4808—Sensing means arrangements therefor
- B60R2022/485—Sensing means arrangements therefor for sensing belt anchor position, belt orientation, or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/48—Control systems, alarms, or interlock systems, for the correct application of the belt or harness
- B60R2022/4808—Sensing means arrangements therefor
- B60R2022/4858—Sensing means arrangements therefor for sensing pressure on seat
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
The invention discloses an automobile safety warning system, which comprises a pressure sensor for detecting the riding state of a driver and passengers, a detection switch arranged in a lock catch of a safety belt and used for detecting the insertion state of a lock tongue, a warning device for sending warning prompt and a warning controller for receiving a detection signal and sending warning information according to the detection signal, wherein the pressure sensor, the detection switch and the warning device are all electrically connected to the warning controller; the detection device comprises a winding device, a detection device and a detection device, wherein the winding device comprises a housing and a rotating shaft which is rotatably arranged on the housing, a braid is wound on the rotating shaft, a detection feature object used for being detected is fixedly attached to the braid, and the detection feature object is positioned in the middle of the braid; and the outlet of the shell is also provided with a switch sensing device for detecting the passing of the detection characteristic object, and the switch sensing device is electrically connected to the warning controller. The invention has the advantages of ingenious structural design, accurate and reliable detection means, good warning effect, contribution to improving the driving safety and the like.
Description
Technical Field
The invention relates to the technical field of automobile safety, in particular to an automobile safety warning system.
Background
With the development of society and the improvement of economic level, the keeping quantity of automobiles is also increased year by year. The automobile brings great convenience to the trip of people, but along with more and more automobiles on the road, traffic accidents happen occasionally, and safety belts are arranged on the automobile for guaranteeing the safety of drivers and passengers. According to statistics of the traffic department, the wearing of the safety belt is very important because the fastening of the safety belt can reduce the death rate of accidents by 85 percent.
In order to remind the driver to fasten the seat belt during driving, a detection switch is usually disposed at the lock catch of the seat belt assembly for detecting whether the locking pin of the seat belt is correctly inserted into the lock catch. However, some drivers still do not prefer to fasten a seat belt and they can easily fool the detection of the system by inserting the locking bolt into the buckle if it is inserted or inserted with the webbing against the seat, burying a significant safety hazard.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a structural design ingenious, the detection means is accurate reliable, and warning effect is good, helps improving the car safety warning system of driving safety nature.
In order to solve the technical problems, the invention adopts the following technical scheme:
an automobile safety warning system comprises a pressure sensor, a detection switch, a warning device and a warning controller, wherein the pressure sensor is arranged on a seat and used for detecting the riding state of a driver and a passenger, the detection switch is arranged in a lock catch of a safety belt and used for detecting the insertion state of a lock tongue, the warning device is used for sending a warning prompt, the warning controller is used for receiving a detection signal and sending warning information according to the detection signal, and the pressure sensor, the detection switch and the warning device are all electrically connected to the warning controller; the device is characterized by further comprising a winder assembly, wherein the winder assembly comprises a shell and a rotating shaft which is rotatably installed on the shell, a woven belt is wound on the rotating shaft, a detection feature object used for being detected is fixedly attached to the woven belt, the detection feature object is located in the middle of the woven belt, and the length from the detection feature object to the outer end of the woven belt is larger than the maximum pull-out length of the woven belt in a state of being attached to a seat and directly fastened and is smaller than the minimum pull-out length of the woven belt in a state of being wound by a driver and passengers and being correctly fastened; and a switch sensing device for detecting the passing of the detection feature is further arranged at the outlet of the shell and electrically connected to the warning controller.
By adopting the system, the warning controller can judge whether a driver and passengers are seated on the seat according to the detection signal of the pressure sensor, if the driver and passengers are not seated, warning information does not need to be sent, if the driver and passengers are seated, the detection signal of the detection switch can be further obtained, whether the lock tongue is inserted in place or not is judged, if the lock tongue is not inserted in place, the warning information is sent, and warning prompt is carried out on the driver and passengers through the warning device; if the spring bolt inserts and targets in place, then can acquire switch sensing device's detected signal, because the length that detects the characteristic thing to the meshbelt outer end is greater than the maximum length of pulling out under the direct tie-down state of meshbelt, in case driver and crew do not correctly tie-down the safety belt, the fixed detection characteristic thing of attaching on the meshbelt will certainly not pull out from the export of casing to can not trigger switch sensing device, the warning controller then can send warning information, warns the suggestion to driver and crew through warning device. On the contrary, the length from the detection feature to the outer end of the woven belt is smaller than the minimum pull-out length in the correct fastening state, once a driver and passengers fasten the safety belt correctly, the detection feature is certainly pulled out from the shell along with the woven belt, so that the detection feature can be detected by the switch sensing device arranged at the outlet of the shell, the warning controller can judge that the driver and passengers fasten the safety belt correctly according to signals, and warning information does not need to be sent. The system can reliably detect whether the safety belt is inserted falsely or not on the basis that the lock tongue is inserted in place, so that drivers and passengers are prevented from cheating the system.
Furthermore, the detection feature is a metal belt attached to the woven belt, and the metal belt extends from the middle of the woven belt to the inner end of the woven belt; the switch sensing device is a proximity switch arranged at the outlet of the shell and corresponds to the position of a metal belt on the woven belt passing through the outlet.
Since the metal strap is extended along the webbing toward its inner end, once the occupant has properly fastened the belt, the webbing with the metal strap attached thereto must pass through the exit, and the metal strap must be present on the webbing at the exit, and thus can be detected by the proximity switch. When the safety belt is not fastened or is directly fastened from the back of a driver or a passenger, the woven belt with the metal belt is still in the shell, so that the woven belt at the outlet of the shell is free of the metal belt, the proximity switch cannot detect the existence of the metal belt, and the safety belt can be judged to be not fastened correctly.
Furthermore, a plastic shell is arranged at the outlet of the shell in a connected mode, a pull-out channel for pulling out the woven tape is formed in the plastic shell, and the proximity switch is embedded in the plastic shell.
Like this, inlay the proximity switch and establish on the plastic casing that sets up alone, because plastics can't be by proximity switch's detection, just can avoid proximity switch to receive the interference of other metal object on the casing, be favorable to improving the accuracy of testing result.
Furthermore, the metal belt is formed by interweaving metal wires and woven belts in a mixed manner.
Therefore, the strength of the strap attached to the webbing can be increased without affecting the overall strength of the webbing, and the service life of the webbing can be prolonged.
Further, the proximity switch is a square inductance type proximity switch.
The square inductive proximity switch is small in size, convenient to install and fix on the shell or the plastic shell, and meanwhile, the inductive proximity switch can accurately detect a metal belt.
Further, the detection feature is a protruding portion protruding along the thickness direction of the mesh belt, and the protruding portion extends along the middle portion of the mesh belt towards the inner end direction of the mesh belt; the switch sensing device is a microswitch arranged at the outlet of the shell and corresponds to the position of the protruding part on the woven belt passing through the outlet.
Thus, the microswitch is not triggered when the webbing with the protrusion is not pulled out, and the protrusion triggers the microswitch when the webbing with the protrusion is pulled out from the housing outlet, so that whether the seatbelt is fastened correctly or not can be determined.
Furthermore, the detection feature is a protruding part protruding in the thickness direction of the mesh belt, and the switch sensing device is a micro switch with a self-locking function and arranged at the outlet of the shell, and corresponds to the position of the protruding part on the mesh belt penetrating through the outlet.
Due to the adoption of the self-locking microswitch, the protrusion part triggers the microswitch when the shell is pulled out, the self-locking microswitch can reserve the triggering state, and when the woven belt is retracted, the protrusion part triggers the microswitch through the outlet again, and the self-locking microswitch switches and reserves the switching state.
Furthermore, the outlet of the shell is provided with a notch which is concavely arranged, the notch corresponds to the position of a protruding part which passes through along with the woven belt, the microswitch is arranged in the notch, and the pressing part of the microswitch is flush with the outlet.
Therefore, the phenomenon that the microswitch is pressed due to deformation in the process of pulling out the safety belt to cause mistaken touch of the microswitch can be avoided, and the detection accuracy is improved.
In conclusion, the invention has the advantages of ingenious structural design, accurate and reliable detection means, good warning effect, contribution to improving the driving safety and the like.
Drawings
Fig. 1 is a schematic view of an installation structure of a seat belt for a vehicle.
Fig. 2 is a schematic diagram of a safety warning system.
Fig. 3 is a schematic sectional view of a winder assembly part.
Fig. 4 is an exploded view of the shaft and drum.
Fig. 5 is a schematic structural view of the retractor assembly of embodiment 1.
Fig. 6 is a schematic structural view of another possible retractor assembly according to embodiment 1.
Fig. 7 is a schematic structural view of a retractor assembly of embodiment 2.
Detailed Description
The present invention will be described in further detail below with reference to an embodiment of an automotive safety warning system.
The existing safety belt fastening detection system comprises a pressure sensor arranged below a seat and used for detecting whether a driver or a passenger sits on the seat; the detection switch is arranged in the lock catch 9 and used for detecting whether the bolt 3 is correctly inserted into the bolt 9; the warning device is integrated in the automobile instrument system and used for sending out warning prompts; and the warning controller is integrated in the vehicle control unit and used for receiving the detection signal and sending warning information according to the detection signal.
Specifically, the warning controller receives a detection signal of the pressure sensor, compares the detection signal with a preset pressure threshold value, and judges that a driver or passenger does not take the seat if the detection signal is smaller than the preset pressure threshold value, and the detection is finished; otherwise, judging that a driver and passengers sit on the seat, continuously receiving the detection signal of the detection switch, comparing the detection signal with the preset switch state signal, judging that the lock tongue is not inserted into the lock catch if the detection signal is inconsistent with the preset switch state signal, and sending warning information to the warning device. Otherwise, the bolt is judged to be correctly inserted into the lock catch.
In order to avoid the situation that the driver and passengers use other lock tongues or directly insert the lock tongues into the lock catches under the state that the mesh belt is attached to the seat, the deception detection system has the following characteristics:
as shown in fig. 3, the retractor assembly 1 includes a housing 11 and a rotating shaft 12 rotatably mounted on the housing 11, one end of the webbing 2 is wound on the rotating shaft 12, the housing 11 has a distance sensor 4 disposed on the housing 11 along a radial direction of the rotating shaft 12 toward the rotating shaft 12, the distance sensor 4 is located on the housing 11 at a position far from the position where the webbing 2 is pulled out, and the distance sensor 4 is electrically connected to the warning controller. In this embodiment, the distance sensor 4 is an infrared distance sensor.
Because the woven belt is wound on the rotating shaft, the longer the woven belt is drawn out, the smaller the thickness of the woven belt wound on the rotating shaft is, and the larger the value detected by the distance sensor is. Thus, the length of the pulled webbing can be obtained according to the thickness of the webbing and the distance detected by the distance sensor. Therefore, the distance value detected by the distance sensor and the pulled-out length of the woven belt can form a corresponding relation, and the pulled-out length of the woven belt when the woven belt is correctly fastened can be judged as long as the distance value detected by the distance sensor is larger than the preset distance value.
Specifically, after the warning controller determines that the lock tongue is correctly inserted into the buckle, the warning controller further needs to acquire a detection signal of the distance sensor, compare the detection signal with a preset distance value, determine that the safety belt is not correctly fastened if the detection signal is smaller than the preset distance value, and send warning information to the warning device. Otherwise, judging that the safety belt is fastened correctly, and finishing the detection.
During specific operation, the winding thickness of the mesh belt is influenced by the winding number of turns of the mesh belt, and the winding force is also influenced, namely the mesh belt with the same length has smaller winding thickness when the winding force is larger, and on the contrary, the winding thickness is larger when the winding force is smaller, so that the correct detection of the distance sensor can be influenced.
For this purpose, in the present embodiment, two ends of the rotating shaft 12 are respectively provided with a circular baffle 13 coaxially installed, a rotatable roller 14 is coaxially installed on the two circular baffles 13, and a drawing opening 15 for the flat passing of the webbing 2 is formed on the roller 14; a winding space 16 is formed between the roller 14 and the rotating shaft 12; the maximum winding length of the winding space 16 is smaller than the total length of the webbing 2, and the difference between the lengths is larger than the maximum pull-out length of the webbing 2 in a state of being directly fastened against a seat and smaller than the minimum pull-out length of the webbing 2 in a state of being correctly fastened by bypassing a driver and a passenger.
Because the difference between the maximum winding length of the winding space and the total length of the woven belts is smaller than the minimum pulling-out length of the woven belts in a correct fastening state, when the woven belts are not fastened correctly, the woven belts are bound on the roller certainly, and when the woven belts are fastened correctly, the woven belts are not bound on the roller certainly, the roller and the rotating shaft are arranged coaxially, and the distance between the surface of the roller and the distance sensor is a fixed value. Therefore, as long as the pulled-out length of the mesh belt meets the pulling-out length requirement under the correct fastening state, the mesh belt is not wound on the roller, the distance sensor can directly detect the distance of the roller and is not influenced by the winding force of the mesh belt, and the detection accuracy is improved. In the running process of the vehicle, whether the safety belt is in a correct fastening state can be judged only by detecting whether the distance between the distance sensor and the roller direction is the value.
In this embodiment, the inner diameter of the drum 14 is the same as the diameter of the circular baffle 13, and the positions of the two ends of the drum 14 near the end parts are provided with annular retaining rings 17 formed by inward protrusion, so that the outer sides of the annular retaining rings 17 form flanges; the inner diameter of the annular retainer ring 17 is smaller than the diameter of the circular baffle plates 13, and the two circular baffle plates 13 are abutted against the annular retainer ring 17 from outside to inside along the axial direction of the roller 14 and embedded into the flange.
Like this, paste through the annular retaining ring of fixing in epaxial circular baffle and the cylinder and lean on, carry on spacingly to the cylinder in the axial, avoid cylinder axial float, and because the internal diameter of cylinder is unanimous with circular baffle's diameter for circular baffle makes cylinder and circular baffle be in coaxial state all the time under the effect of the outer flange of annular retaining ring. The structure is simple in matching, fault rate is reduced, and reliability is improved.
In implementation, as shown in fig. 4, the rotating shaft 12 includes a winding portion 12a located in the middle, a first shaft section 12b and a second shaft section 12c are sequentially disposed at both ends of the winding portion 12a, and the diameter of the first shaft section 12b is smaller than that of the winding portion 12a and is larger than that of the second shaft section 12 c; the length of the first shaft section 12b is smaller than the thickness of the circular baffle 13, and the middle part of the circular baffle 13 is provided with a through hole matched with the first shaft section 12 b; the second shaft section 12c is provided with threads, and the circular baffle 13 is coaxially sleeved on the first shaft section 12b and fixed on the rotating shaft 12 through a bolt arranged on the second shaft section 12 c.
Because the length of the first shaft section is smaller than the thickness of the circular baffle plate, the circular baffle plate which is coaxially sleeved on the first shaft section is extruded on the step surface on the other side of the first shaft section under the action of the bolt on the second shaft section, and therefore the circular baffle plate can be fixed on the rotating shaft. In addition, the two circular baffles keep a fixed distance under the limitation of the winding part, so that the circular baffles can be prevented from being extruded on the annular baffle ring of the roller, and the roller can be ensured to smoothly rotate around the circular baffles.
In addition, in the present embodiment, the shape of the first shaft section 12b in the cross section perpendicular to the axial direction is a regular hexagon, and the through hole in the middle of the circular baffle 13 is a matching regular hexagon.
Like this, through regular hexagon's hole axle cooperation, can avoid the cylinder to drive the relative pivot of circular flange and rotate around circular baffle pivoted in-process, and then influence the bolt to improve overall structure's reliability.
In implementation, the drawing opening 15 is arranged in a long strip shape along the axial direction of the drum 14, the width of the drawing opening 15 is consistent with the thickness of the woven tape 2, the middle part of the woven tape 2 is provided with a protruding part 21 with increased thickness, the thickness of the protruding part 21 is greater than the width of the drawing opening 15, the length of the woven tape between the protruding part 21 and the rotating shaft 12 is the maximum winding length of the winding space 16, and when the woven tape with the length is completely wound on the rotating shaft 12, a gap is formed between the woven tape 2 and the inner wall of the drum 14. In particular, one end of the drawing opening 15 extends in a length direction and penetrates the drum 14, so that the installation and assembly of the webbing can be facilitated.
Therefore, the braid positioned at the outer end of the protruding part can not enter the winding space through the protruding part with the thickness larger than the width of the pull opening, so that the braid can be prevented from entering the winding space without limit and filling the winding space, and the braid is extruded in the winding space to influence the normal pull-out use of the braid.
As shown in fig. 5, in this embodiment, the middle portion of the webbing 2 has a plurality of prefabricated holes equidistantly arranged along the length direction, and the protruding portion 21 is a snap fastener detachably fastened on one of the prefabricated holes. In particular implementation, the protrusion 21 may also be rubber glued to the surface of the webbing 2.
Like this, because the seat height and the position of different motorcycle types are different, and meshbelt 2 is along the direct pull-out length also nearly not the same under the buckle state of pulling out of seat, through detachable snap fastener, can adjust according to seat height and position. The specific adjustment method is as follows:
the lock bolt 3 is directly inserted into the lock fastener, so that the woven belt is stretched straight along the seat, then the seat is adjusted front and back and up and down, the maximum pulling-out position of the woven belt is found, then the woven belt is pulled out for 1-2 circles, and the snap fastener is buckled on the prefabricated hole close to the outlet of the shell 11, so that the adjustment can be completed.
In order to better judge that the webbing wound around the drum is completely pulled out, in the present embodiment, the drum 14 has a yielding hole 18 penetrating in the radial direction, and when the webbing of the winding space is in a pulled-out state, the distance sensor 4 is directly facing the yielding hole in the radial direction.
Once a driver and passengers correctly fasten the safety belt, the woven belt in the winding space is pulled out without the woven belt wound on the drum, the distance sensor directly detects the distance of the woven belt wound on the rotating shaft through the abdicating hole, and the distance is certainly greater than the distance from the distance sensor to the surface of the drum, so that the fastening state of the safety belt can be judged more reliably through comparing the actually detected distance with the distance from the distance sensor to the surface of the drum.
In order to avoid the distance sensor from being damaged and unable to detect correctly, in this embodiment, a redundancy detection scheme is further designed, specifically: the detection feature object 5 used for being detected is fixedly attached to the mesh belt 2, the detection feature object 5 is located in the middle of the mesh belt 2, and the length from the detection feature object 5 to the outer end of the mesh belt 2 is larger than the maximum pull-out length of the mesh belt 2 in a state of being directly fastened by attaching to a seat and smaller than the minimum pull-out length of the mesh belt 2 in a state of being correctly fastened by bypassing a driver and passengers; and a switch sensing device 7 for detecting the passing of the detection feature 5 is further arranged at the outlet of the shell 11, and the switch sensing device 7 is electrically connected to the warning controller.
Because the length from the detection feature to the outer end of the mesh belt is greater than the maximum pull-out length of the mesh belt in the state of direct fastening of the mesh belt, once a driver and passengers do not fasten the seat belt correctly, the detection feature fixedly attached to the mesh belt cannot be pulled out from the outlet of the shell. And the length from the detection characteristic object to the outer end of the woven belt is smaller than the minimum pull-out length under the correct fastening state, so that once a driver fastens the safety belt correctly, the detection characteristic object is pulled out from the shell together with the woven belt, and the detection characteristic object can be detected by a switch sensing device arranged at the outlet of the shell. By arranging the detection feature on the woven belt and controlling the distance between the detection feature and the outer end of the woven belt, whether the pull-out length of the woven belt is in a correct fastening state or not can be known through the switch sensing device.
Specifically, after the warning controller determines that the lock tongue is correctly inserted into the buckle, the detection signal of the switch sensing device 7 can be further acquired and compared with a preset switch signal value, if the detection signal and the preset switch signal value are different, it can be determined that the safety belt is not correctly fastened, and warning information is sent to the warning device. Otherwise, judging that the safety belt is fastened correctly, and finishing the detection.
In this embodiment, the detection feature 5 is a protrusion protruding in the thickness direction of the webbing 2, specifically, the protrusion is a snap fastener detachably fastened to one of the prefabricated holes, and the switch sensing device 7 is a micro switch with a self-locking function disposed at the outlet of the housing 11 and corresponding to the position of the snap fastener on the webbing passing through the outlet.
Due to the adoption of the self-locking microswitch, the protrusion part triggers the microswitch when the shell is pulled out, the self-locking microswitch can reserve the triggering state, and when the woven belt is retracted, the protrusion part triggers the microswitch through the outlet again, and the self-locking microswitch switches and reserves the switching state.
In this embodiment, the outlet of the housing 11 has a concave notch corresponding to the position of the protruding portion passing through with the webbing, the microswitch is installed in the notch, and the pressing portion of the microswitch is flush with the outlet.
Therefore, the phenomenon that the microswitch is pressed due to deformation in the process of pulling out the safety belt to cause mistaken touch of the microswitch can be avoided, and the detection accuracy is improved.
In a specific implementation, as shown in fig. 6, the protruding portion may also extend along the middle portion of the webbing 2 toward the inner end thereof; the switch sensing device 7 is a micro switch arranged at the outlet of the shell 11 and corresponds to the position of the protruding part on the woven belt passing through the outlet. Thus, the microswitch is not triggered when the webbing with the protrusion is not pulled out, and the protrusion triggers the microswitch when the webbing with the protrusion is pulled out from the housing outlet, so that whether the seatbelt is fastened correctly or not can be determined.
Example 2: the main difference from the embodiment 1 is that, as shown in fig. 7, the detection feature 5 is a metal strip attached to the webbing 2, and the metal strip is extended from the middle of the webbing 2 toward the inner end thereof; the switch sensing device 7 is a proximity switch arranged at the outlet of the housing 11 and corresponds to the position of the metal strip on the woven tape passing through the outlet.
Since the metal strap is extended along the webbing toward its inner end, once the occupant has properly fastened the belt, the webbing with the metal strap attached thereto must pass through the exit, and the metal strap must be present on the webbing at the exit, and thus can be detected by the proximity switch. When the safety belt is not fastened or is directly fastened from the back of a driver or a passenger, the woven belt with the metal belt is still in the shell, so that the woven belt at the outlet of the shell is free of the metal belt, the proximity switch cannot detect the existence of the metal belt, and the safety belt can be judged to be not fastened correctly.
In addition, the outlet of the housing 11 is also provided with a plastic housing 6 in a connecting manner, the plastic housing 6 is provided with a pull-out channel for pulling out the braid, and the proximity switch is embedded in the plastic housing 6.
Like this, inlay the proximity switch and establish on the plastic casing that sets up alone, because plastics can't be by proximity switch's detection, just can avoid proximity switch to receive the interference of other metal object on the casing, be favorable to improving the accuracy of testing result.
Meanwhile, the metal belt is formed by interweaving metal wires and the woven belt 2.
Therefore, the strength of the strap attached to the webbing can be increased without affecting the overall strength of the webbing, and the service life of the webbing can be prolonged.
In practice, the proximity switch is a square inductive proximity switch.
The square inductive proximity switch is small in size, convenient to install and fix on the shell or the plastic shell, and meanwhile, the inductive proximity switch can accurately detect a metal belt.
The above description is only exemplary of the present invention and should not be taken as limiting, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An automobile safety warning system comprises a pressure sensor, a detection switch, a warning device and a warning controller, wherein the pressure sensor is arranged on a seat and used for detecting the riding state of a driver and a passenger, the detection switch is arranged in a lock catch of a safety belt and used for detecting the insertion state of a lock tongue, the warning device is used for sending a warning prompt, the warning controller is used for receiving a detection signal and sending warning information according to the detection signal, and the pressure sensor, the detection switch and the warning device are all electrically connected to the warning controller; the device is characterized by further comprising a winder component (1), wherein the winder component (1) comprises a shell (11) and a rotating shaft (12) which is rotatably installed on the shell (11), a woven belt (2) is wound on the rotating shaft (12), a detection feature (5) used for being detected is fixedly attached to the woven belt (2), the detection feature (5) is located in the middle of the woven belt (2), and the length from the detection feature (5) to the outer end of the woven belt (2) is greater than the maximum pull-out length of the woven belt (2) in a state of being directly fastened to a seat and smaller than the minimum pull-out length of the woven belt (2) in a state of being fastened correctly by drivers and passengers; the outlet of the shell (11) is also provided with a switch sensing device (7) for detecting the passing of the detection feature (5), and the switch sensing device (7) is electrically connected to the warning controller;
the shell (11) is provided with a distance sensor (4) which is arranged along the radial direction of the rotating shaft (12) and faces the rotating shaft (12), the distance sensor (4) is positioned on the shell (11) at a position far away from the pulling-out position of the mesh belt (2), and the distance sensor (4) is electrically connected to the warning controller; the two ends of the rotating shaft (12) are respectively provided with a circular baffle (13) which is coaxially arranged, the two circular baffles (13) are coaxially provided with a rotatable roller (14), and the roller (14) is provided with a drawing opening (15) through which the woven belt (2) straightly passes; a winding space (16) is formed between the roller (14) and the rotating shaft (12); the maximum winding length of the winding space (16) is less than the total length of the mesh belt (2), and the length difference of the two is greater than the maximum pull-out length of the mesh belt (2) in a state of being directly fastened by attaching to a seat and less than the minimum pull-out length of the mesh belt (2) in a state of being fastened by bypassing a driver and passengers correctly.
2. The vehicle safety warning system according to claim 1, wherein the detection feature (5) is a metal strip attached to the webbing (2), and the metal strip extends from the middle of the webbing (2) to the inner end thereof; the switch sensing device (7) is a proximity switch arranged at the outlet of the shell (11) and corresponds to the position of a metal belt on the woven belt passing through the outlet.
3. The automobile safety warning system according to claim 2, characterized in that a plastic shell (6) is further arranged at the outlet of the housing (11) in an engaging manner, a pull-out channel for pulling out the webbing is arranged on the plastic shell (6), and the proximity switch is embedded on the plastic shell (6).
4. The vehicle safety warning system according to claim 2, wherein the metal belt is formed by interweaving metal wires and the woven belt (2).
5. The vehicle safety warning system of claim 2, wherein the proximity switch is a square inductive proximity switch.
6. The vehicle safety warning system according to claim 1, wherein the detection feature (5) is a protrusion portion protruding in a thickness direction of the webbing (2), and the protrusion portion extends along a middle portion of the webbing (2) toward an inner end thereof; the switch sensing device (7) is a micro switch arranged at the outlet of the shell (11) and corresponds to the position of the protruding part on the woven belt passing through the outlet.
7. The automobile safety warning system according to claim 1, wherein the detection feature (5) is a protrusion protruding along the thickness direction of the webbing (2), and the switch sensing device (7) is a micro switch with a self-locking function disposed at the outlet of the housing (11) and corresponding to the position of the protrusion on the webbing passing through the outlet.
8. The safety warning system for automobiles according to claim 6 or 7, characterized in that the exit of the housing (11) has a notch with a concave arrangement, the notch corresponds to the position of the projection passing through with the webbing, the microswitch is installed in the notch, and the pressing part of the microswitch is flush with the exit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010369319.7A CN111409588B (en) | 2020-05-05 | 2020-05-05 | Automobile safety warning system |
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| CN202010369319.7A CN111409588B (en) | 2020-05-05 | 2020-05-05 | Automobile safety warning system |
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| CN111409588B true CN111409588B (en) | 2021-03-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110559570A (en) * | 2019-09-02 | 2019-12-13 | 成都建工第五建筑工程有限公司 | Induction device, detection system and safety hook |
| CN111845622B (en) * | 2020-07-20 | 2021-07-06 | 重庆广播电视大学重庆工商职业学院 | Safety belt assembly capable of detecting fastening state |
| CN111845620B (en) * | 2020-07-20 | 2021-09-28 | 重庆广播电视大学重庆工商职业学院 | Winding device of automobile safety belt |
| CN113401050A (en) * | 2020-12-26 | 2021-09-17 | 重庆广播电视大学重庆工商职业学院 | Vehicle-mounted silent horn system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102004055396A1 (en) * | 2004-11-17 | 2006-05-18 | Paragon Ag | Service and / or monitoring device for attachment to a on a shaft of a retractor up and roll off this shaft belt, in particular seat belt of a motor vehicle |
| CN203332039U (en) * | 2013-05-14 | 2013-12-11 | 朱珑 | Safety belt device |
| CN204937070U (en) * | 2015-08-05 | 2016-01-06 | 武汉科荣车业有限公司 | A kind of safety strap system alarm device |
| CN106114451A (en) * | 2016-08-31 | 2016-11-16 | 开平市中铝实业有限公司 | A kind of automotive seat and automobile |
| CN210337849U (en) * | 2019-07-22 | 2020-04-17 | 久乐宇信(上海)汽车安全系统有限公司 | Safety belt reminding device |
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