CN108973803B - Safety seat for protecting passengers during side collision of automobile and control method thereof - Google Patents
Safety seat for protecting passengers during side collision of automobile and control method thereof Download PDFInfo
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- CN108973803B CN108973803B CN201811009491.0A CN201811009491A CN108973803B CN 108973803 B CN108973803 B CN 108973803B CN 201811009491 A CN201811009491 A CN 201811009491A CN 108973803 B CN108973803 B CN 108973803B
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- seat
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- vertical plates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
- B60N2/427—Seats or parts thereof displaced during a crash
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/0224—Non-manual adjustments, e.g. with electrical operation
- B60N2/02246—Electric motors therefor
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
Abstract
The invention discloses a safety seat for protecting passengers in side collision of an automobile, which comprises the following components: a motor; a worm connected with a motor shaft of the motor; a worm wheel meshed with the worm and fixedly connected with a spline shaft; a rear fixing plate member screw-connected to the rear side of the guide rail below the seat outer side height adjusting bracket; the rear fixing plate comprises a rear horizontal plate and two rear vertical plates, wherein the rear horizontal plate and the two rear vertical plates are formed by welding, the rear vertical plates are arranged on the rear horizontal plate in parallel at intervals, and first through holes are oppositely formed in the rear vertical plates; the rear transmission plate is arranged between the two rear vertical plates, a spline hole and a long slideway are arranged on the rear transmission plate, and a rear overhanging shaft pin on the seat outer side height-adjusting bracket is matched and slides in the long slideway. The invention discloses a control method of a safety seat for protecting passengers in a side collision of an automobile.
Description
Technical Field
The invention relates to an automobile passenger protection safety device, in particular to an automobile side collision passenger protection safety seat and a control method thereof.
Background
Vehicle collision accidents include frontal collisions, side collisions, rear-end collisions, and vehicle rollover. Wherein the frontal collision is the largest for occupant injuries and the side collision is the second. Statistics of the related data show that the probability of a frontal collision is about 58%, and the probability of a side collision is about 26% relatively low, but the mortality rate of side collision accidents is as high as 35%. This phenomenon is because the side of the car is a weaker part of the whole car, and for the side of the car, the buffer area is smaller when the side collision occurs, and the collided part is closer to the passenger, so the injury to the passenger is more serious than other types of collisions.
Safety protection devices of automobiles are classified into active protection devices and passive protection devices. The active protection device is generally based on the sensing of collision possibility by sensors such as cameras, radars and the like, and the chassis electric control systems such as active braking, active steering, active suspension and the like are used for avoiding the possible collision of the automobile in front. Among the existing side impact safety devices, there are passive protection devices, which can be classified into door protection devices and in-vehicle protection devices, such as door impact beams, side airbags, air curtains, and the like.
The door anti-collision beam is used as an important reinforcement on the door for resisting side collision, and in the early stage of the side collision process, the door anti-collision beam generates plastic deformation and absorbs energy generated by collision so as to achieve the aim of effectively reducing the damage of passengers. The side airbag and the air curtain transmit the automobile side collision strength signals to the controller through the sensor, and the controller processes and judges whether the airbag needs to be opened or not. When the logic judgment is needed, an ignition signal is quickly sent out to enable the gas generator to trigger ignition, then a large amount of gas is generated between the passenger and the gap of the vehicle body structure to expand the air bag in a short time, and the impact on the passenger is relieved through the inflatable air bag. In the side safety protection device, audi A8 adopts a novel protection device based on an active anti-tilting rod: when the vehicle may encounter a side impact at speeds above 25km/h, the suspension will actively lift 80mm in half a second, with a stronger underbody beam to sustain the impact.
On the basis of the existing passive protection device for side impact, some patents on active protection devices for side impact have also appeared, such as: the active protection device for the side collision of the automobile disclosed in China patent (patent number: CN201510873312.8,2016.03.30.) triggers an airbag on the outer side of the automobile body when the side collision of the automobile is detected, and increases the collision compression space, so that the collision of an impact object on the automobile is buffered, and the damage to the automobile is reduced while the damage to the passenger is reduced. However, the technical scheme has the defects of low engineering realization degree, higher cost, influence on the appearance of the automobile body and the like due to the adoption of the air bags arranged on the outer side of the automobile body. And the air bag is directly contacted with the collision driving part, and sharp objects on the air bag are easy to destroy the air bag when the collision happens, so that the effect of buffering the collision by the air bag is reduced. The principle of the Chinese patent 'a side collision buffer device for an automobile' (patent number: CN 201320736941.2) is that when a controller receives a signal sent by a sensor that the automobile is likely to have a side collision, the buffer air bag on the side where the collision is about to occur is controlled to be inflated and expanded. The buffer air bag is filled between the vehicle door body and the inner decorative plate after being inflated, and after external force acts on the vehicle door body, the inflated buffer air bag plays a role in buffering impact force, so that instant rigid impact is converted into flexible impact with damping, and the possibility of injury to passengers caused by intrusion into the space in the vehicle after deformation of the vehicle door is reduced. The technical scheme still adopts the form of the air bag, and compared with the prior art, the main advantages are reflected in that the air bag is sprung open in advance under the condition that the possibility of collision is detected, and the side collision passenger protection under the condition that the side energy absorption deformation space of the vehicle body is limited is achieved. The technical scheme is more traditional, and the air bag is possibly triggered by mistake, so that the use cost is increased.
Disclosure of Invention
The invention designs and develops a safety seat for protecting passengers in side collision of an automobile, and aims to effectively protect the waist, pelvis and other parts of the passengers in the automobile during side collision of the automobile.
The invention designs and develops a control method for protecting a safety seat for a side collision passenger of an automobile, and aims to comprehensively control two aspects of an electric lifting tilting device and an anti-collision rod piece protecting device and improve the safety of the passenger when a side collision accident occurs.
The technical scheme provided by the invention is as follows:
an automotive side impact occupant protection safety seat comprising:
a motor;
a worm connected with a motor shaft of the motor;
a worm wheel meshed with the worm and fixedly connected with a spline shaft;
a rear fixing plate member screw-connected to the rear side of the guide rail below the seat outer side height adjusting bracket;
the rear fixing plate comprises a rear horizontal plate and two rear vertical plates, wherein the rear horizontal plate and the two rear vertical plates are formed by welding, the rear vertical plates are arranged on the rear horizontal plate in parallel at intervals, and first through holes are oppositely formed in the rear vertical plates;
the rear transmission plate is arranged between the two rear vertical plates, a spline hole and a long slideway are arranged on the rear transmission plate, and a rear overhanging shaft pin on the seat outer side heightening bracket slides in the long slideway in a matched manner;
the inner diameter of the spline hole is the same as that of the first through hole, the spline shaft is coaxially arranged, and the spline shaft penetrates through the through hole and then is matched and meshed with the spline hole, so that the rear transmission plate takes the first through hole as the center, and the rear transmission plate rotates under the drive of the spline shaft.
Preferably, the method further comprises:
the long inclined guide rail is arranged on the side surface of the seat backrest framework, and a first sliding block capable of sliding is arranged in the long inclined guide rail in a matching manner;
the short inclined guide rail is arranged at the rotating shaft where the seat is connected with the backrest, and a second sliding block which can slide is arranged in the short inclined guide rail in a matching way;
the horizontal guide rail is arranged on the side surface of the seat cushion framework, a third sliding block capable of sliding is arranged in the horizontal guide rail in a matching mode, and a concave hole is formed in the inner side surface of the third sliding block;
the long rod piece comprises a cross beam and a vertical beam, and the two end parts of the cross beam are respectively connected with the first sliding block and the third sliding block;
one end of the short rod piece is connected with the second sliding block, and the other end of the short rod piece is connected with the end part of the vertical beam;
one end of the spring is fixedly connected to the seat framework;
a plurality of fixed pulleys fixed to the seat frame;
one end of the stay wire is connected with the other end of the spring, and the other end of the stay wire is connected with the bottom of the long rod piece;
triggering an electromagnetic latch, which is arranged between the seat cushion framework and the horizontal guide rail;
the locking electromagnetic bolt is arranged between the seat cushion framework and the horizontal guide rail and is parallel to the triggering electromagnetic bolt;
when the triggering electromagnetic bolt is not electrified, the triggering electromagnetic bolt is clamped in the concave hole and used for supporting the long rod piece; when the triggering electromagnetic bolt is electrified, the triggering electromagnetic bolt is retracted, and the long rod piece moves under the drive of the pull wire pulled by the spring until the locking electromagnetic bolt is clamped in the concave hole, so that the long rod piece and the short rod piece are unfolded.
Preferably, the method further comprises: the shell is fixedly connected with the shell of the motor and comprises a cuboid and a cylindrical accommodating cavity which are communicated with each other;
the cuboid accommodating cavity is used for accommodating the worm, and the cylindrical cavity is used for accommodating the worm wheel.
Preferably, the method further comprises:
a front fixing plate which is in threaded connection with the front side of the guide rail below the seat outer side heightening bracket;
the front fixing plate comprises a front horizontal plate and two front vertical plates which are welded, wherein the front vertical plates are arranged on the front horizontal plate in parallel at intervals, and second through holes are oppositely formed in the front vertical plates;
the front transmission plate is arranged between the two front vertical plates, a third through hole and a through groove are formed in the front transmission plate, and a front overhanging shaft pin on the seat outer side height-adjusting bracket slides in the through groove in a matched manner;
wherein the inner diameter of the second through hole is the same as the inner diameter of the third through hole, and the second through hole and the third through hole are coaxially arranged;
and a cylindrical shaft pin passing through and hinging the second through hole and the third through hole at the same time.
Preferably, the method further comprises: the hinge is connected between the seat inner side heightening bracket and the movable guide rail, and the opening direction of the hinge points to the outer side.
Preferably, the front end of the horizontal guide rail is provided with vibration damping rubber.
Preferably, the rear transmission plate rotates 5-30 degrees under the drive of the spline shaft.
Preferably, the method further comprises:
the electric control unit comprises a signal processing module, a power module, a singlechip, a direct-current motor driving circuit and an electromagnetic bolt driving circuit;
the collision pre-sensing sensor is used for receiving the data of the signal processing module and transmitting the data to the singlechip;
the system reset button is electrically connected with the singlechip and used for resetting or maintaining;
and the vehicle-mounted power supply is used for simultaneously electrically connecting the collision pre-sensing sensor, the electric control unit, the system reset button and the motor.
The control method of the automobile side collision passenger protection safety seat, which comprises the following steps:
step one, collecting the distance S between the vehicle and the side vehicle and comparing the distance S with the initial setting S 1 Comparing and judging if S is more than or equal to S 1 Then no side collision risk is indicated if S < S 1 A side collision risk is indicated;
step two, when judging that there is a side collision risk, collecting the vehicle speed V and setting the vehicle speed V with the first initial setting V 1 Comparing and judging if V is less than V 1 Indicating a reduced probability of side impact if V.gtoreq.V 1 The possibility of side collision is indicated to be raised;
step three, when the possibility of side collision is judged to be increased, the second initial setting V 2 Comparing and judging if V is less than V 2 The side impact force is not very severe, if V is greater than or equal to V 2 The side impact force is shown to be very severe;
step four, when judging that the side collision force is not very severe, the triggering electromagnetic bolt is electrified, and the motor is not electrified; when the side collision force is judged to be very severe, the triggering electromagnetic bolt is electrified, and the motor is electrified.
Preferably, when judging that there is a side collision danger, the electromagnetic bolt driving circuit is connected through an I/O port line of the singlechip, and electromagnetic bolt trigger signals are respectively transmitted to the trigger electromagnetic bolt and the locking electromagnetic bolt through the electromagnetic bolt driving circuit through line connection amplification, so that the power on and off of the trigger electromagnetic bolt and the locking electromagnetic bolt are controlled, and the extension and retraction of respective lock pins are controlled.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention relates to an automobile side collision passenger protection safety seat, which belongs to an active pre-collision passive protection device, when a side external impact object is detected, the seat can be rapidly inclined for a certain angle under the action of a control system, and meanwhile, the seat anti-collision rod protection device is rapidly and completely unfolded, so that the rigidity in side collision is improved, and the safety seat can play a better omnibearing protection role on the side of a passenger by matching with a seat side safety airbag or a B column side air curtain in the prior art, and effectively reduce the death and disability rate of the side collision;
2. the automobile side collision passenger protection safety seat skillfully uses the connecting rod sliding rail static-fixing mechanism to improve the supporting rigidity during unfolding, and can be folded and restored to the original position easily by the self-thrust of a driver after the slight collision or the false triggering of the unfolding, so that the production cost and the use and maintenance cost are greatly reduced, the safety seat can be repeatedly used, and the service life is prolonged;
3. the electric lifting tilting device of the automobile side collision passenger protection safety seat can tilt the seat for an angle in a short time, raise the outer seat cushion framework where collision occurs, improve the rigidity of the seat when collision occurs, protect hip joints of passengers, and simultaneously enable important heads and shoulders of human bodies to be far away from a side collision area, so that survival probability is increased. In addition, due to the adoption of the worm and gear transmission mechanism, the seat can be self-locked at the lifting position after the motor works to lift the inclined seat, so that the automatic return due to the gravity of a human body is avoided, the reliability of the system is improved, and the power consumption of the motor is reduced;
4. the safety seat for protecting the passengers in the side collision of the automobile has good independence and compatibility, mainly protects important parts of the waist, pelvis and the like, comprehensively considers factors such as safety, cost, light weight, resetting or maintenance convenience and the like, can be installed in place along with the supply of a seat matching manufacturer, can be additionally installed in a later period, is not influenced by other parts on the automobile basically, is suitable for most automobile systems, and is convenient for large-area popularization.
Drawings
Fig. 1 is an overall isometric view of a side impact occupant protection safety seat for an automobile according to the present invention.
FIG. 2 is an isometric view of an electric lift recliner actuator for an automotive side impact occupant protection safety seat according to the present invention.
Fig. 3 is a view showing an installation position of a cushion skeleton side tilting hinge of an electric lifting tilting device of an automobile side collision passenger protection safety seat.
Fig. 4 is a partial enlarged view at a in fig. 3.
Fig. 5 is an isometric view of a rear fixed panel of an electric lift recliner of an automotive side impact occupant protection safety seat according to the present invention.
Fig. 6 is an isometric view of a rear drive plate of an electric lift recliner of an automotive side impact occupant protection safety seat according to the present invention.
FIG. 7 is an elevation view of the rear fixed panel and rear drive panel assembly of the electric lift recliner of an automotive side impact occupant protection safety seat of the present invention.
FIG. 8 is an isometric view of the rear drive plate and seat bracket assembly relationship of the electric lift recliner of an automotive side impact occupant protection safety seat according to the present invention.
Fig. 9 is a view showing the installation positions of the rear fixed plate, the rear transmission plate, the front fixed plate and the front movable plate of the electric lift tilting device for the side-impact occupant protection safety seat of the automobile according to the present invention.
Fig. 10 is a view showing a state of a position of the bumper guard for a side-impact occupant protection safety seat for a vehicle when the bumper guard is retracted.
Fig. 11 is a partial enlarged view at B in fig. 10.
Fig. 12 is a view showing the installation positions of the spring, the fixed pulley and the stay wire of the bumper guard of the side-impact occupant protection safety seat for the automobile according to the present invention.
Fig. 13 is a position installation diagram of a triggering electromagnetic latch and a locking electromagnetic latch of an anti-collision rod protecting device for a side-collision passenger protecting safety seat of an automobile.
Fig. 14 is a view showing a position of a side surface of a seat when an impact beam protection device for a side collision occupant protection safety seat for an automobile according to the present invention is unfolded.
Fig. 15 is a block diagram of the electric control part of the control method for protecting the safety seat for the side collision passenger of the automobile.
Fig. 16 is a circuit diagram of an embodiment of an electric control portion of a side-impact occupant protection safety seat for an automobile according to the present invention.
Fig. 17 is a flow chart of an electronic control unit of a control portion of a side-impact occupant protection safety seat for an automobile according to the present invention.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
The invention relates to a safety seat for protecting passengers in side collision of an automobile, which consists of an electric lifting tilting device, an anti-collision rod piece protecting device, an electric control part and a software part.
The invention provides an automobile side collision passenger protection safety seat which comprises an electric lifting tilting device and an anti-collision rod protection device.
1. Electric lifting tilting device
The electric lift tilting device includes a motor 110, a motor shaft 111, a worm wheel 120, a housing 130, a spline shaft 140, a rear fixing plate 151, a rear transmission plate 152, a front fixing plate 161, a front transmission plate 162, and a hinge 170.
As shown in fig. 1 to 7, the motor shaft 111 is connected with the worm by a spline or a flat key, and outputs power through the worm; the worm is meshed with the worm wheel 120; the worm and worm gear 120 are disposed and enclosed within a housing 130. The housing 130 is a cavity formed by intersecting a cuboid and a cylinder with an opening, wherein a worm supported by a bearing is accommodated in the cuboid, and a worm wheel supported by the bearing is accommodated in the cylinder; the opening of the end face of the cylinder of the shell 130 is provided with a flanging and a through hole. The housing 130 is fixed to the end face of the housing of the motor 110, and the housing 130 is fixed to the rear fixing plate 151 by bolts passing through the burring holes thereof. The center of the worm gear 120 is fixedly connected with a spline shaft 140 and a rear transmission plate 152 assembled on a rear fixed plate 151; the seat-raising bracket on the inboard side of the seat is connected to the side seat travel rail by a hinge 170 that allows the seat-raising bracket to roll with respect to the rail while moving back and forth with the rail along with the rail relative to the rail base.
As shown in fig. 5 to 7, the rear fixing plate 151 is formed by welding a horizontal flat plate portion 151c and a vertical lug portion, the flat plate portion 151c is fixed with a guide rail below a seat heightening bracket at the outer side of the seat by bolts, the vertical lug portion of the rear fixing plate 151 is formed by welding two lugs 151a and 151b in parallel, a gap is reserved between the two lugs, and the gap is just slightly larger than the thickness of the rear transmission plate 152; after the rear transmission plate 152 is put in, the central round holes of the two vertical lugs 151a and 151b correspond to the spline holes at one end of the rear transmission plate 152, and the tooth bottom diameters of the spline holes of the rear transmission plate 152 are consistent with the corresponding inner diameters of the through holes of the two vertical lugs of the rear fixing plate 151.
As shown in fig. 8, the elongate slide at the other end of the rear drive plate 152 is engaged with the overhanging pin on the seat-lift bracket so that the pin moves along the slide during the seat lift. The pin slides to the outermost end of the elongated slide of the rear drive plate 152 when the seat is raised to the highest position; the pivot pin is at the innermost end of the elongate slide of the rear drive plate 152 when the seat is not reclined. In order to avoid motion interference between the fixed shaft pin of the seat heightening bracket and the long slide rail on the rear transmission plate 152 due to inclination during lifting of the seat, the long slide rail is designed into a non-rectangular hole groove with the inner end consistent with the diameter of the shaft pin and the outer end larger than the diameter of the shaft pin. In addition, the shaft pin is designed to be long enough, so that the seat is prevented from falling off from the long slideway when lifted. One end of the worm gear 120, which is fixedly connected with the spline shaft 140, passes through the corresponding hole on the rear fixing plate 151 and the spline hole on the rear transmission plate 152, so that the axes of the three parts are overlapped, and the rear transmission plate 152 can rotate together with the worm gear 120 by taking the two lug through holes of the rear fixing plate 151 as the center under the driving of the worm gear 120 through the spline shaft 140.
When the motor 110 is started, the motor shaft 111 rotates to drive the worm, and the worm drives the worm wheel 120 to rotate. The speed reduction and torque increase are realized through the worm and gear, and the reverse rotation is prevented by utilizing the self-locking of the worm and gear, so that the unidirectionality of the transmission is ensured. The worm gear 120, the spline shaft 140 and the rear drive plate 152 rotate clockwise at the same angular velocity. As the rear drive plate 152 rotates, the seat-raising bracket pivot in the elongate slide rises and pivots about the hinge. The roll angle can be designed within 5-30 degrees according to the internal space and the vehicle body structure of different vehicle types, and when the rear transmission plate 152 rotates to the maximum angle, the overhanging shaft pin is propped against the outermost end of the long slideway, the motor stops rotating, and the seat lifting is completed.
As shown in fig. 9, in addition to the lifting devices on the rear side of the seat, which are actively driven by the motor 110, there is an identical set of driven lifting devices on the front side of the seat, respectively a front fixed plate 161 and a front drive plate 162. The front fixed plate is similar in structure to the rear fixed plate 151 but is much smaller in size. The flat plate part of the front fixing plate 161 is also fixed with a guide rail below the seat heightening bracket on the outer side of the seat by bolts, and the vertical lug part of the front fixing plate 161 is formed by parallel welding of two lugs 161a and 161b, a gap is reserved between the two lugs, and the gap is just slightly larger than the thickness of the front transmission plate 162. The front drive plate 162 is similar in construction to the rear drive plate 152, with a through hole in the lower left corner and a non-rectangular through slot in the upper portion extending axially. After the front transmission plate 162 is put into the gap between the two lugs of the front fixing plate 161, the central round holes of the two lugs correspond to the through holes of the front transmission plate 162, and the three through holes are identical in size and are hinged together by cylindrical pins 163 penetrating into the through holes. The seat height adjustment bracket front side is also welded with a pin that is inserted into a non-rectangular through slot formed in the front drive plate 162. When the seat is lifted by the rear electric lifting and tilting device, the front driving plate 162 can be driven to rotate around the hinged cylindrical pin with the front fixing plate 161 through the shaft pin, so that the purpose of the front driving plate is to provide additional support when and after the seat rotates, and the stability of the seat is ensured. The front and rear lifting devices should be mirror-image mounted, i.e. the overhanging pin rests against the inner side of the elongated channel width of the movable plate when stationary, to ensure that the seat does not rock when stationary.
2. Anti-collision rod protection device
The anti-collision rod piece protection device is a set of anti-collision rod piece guide rail protection device which does not influence the pitching motion of a backrest is additionally arranged on the side surface of an original automobile passenger seat, and comprises a triggering electromagnetic bolt 310, a locking electromagnetic bolt 320, damping rubber 231, a spring 240, a fixed pulley 250, a stay wire 251, a long rod piece 211, a short rod piece 221, a horizontal guide rail 210, a short inclined guide rail 220 and a long inclined guide rail 230.
As shown in fig. 10, the long diagonal rail 230 is installed at a side of the seat back frame, is installed at the same angle as the inclination angle of the seat back, and rotates as the back rotates. The short diagonal rail 220 is installed at the rotation shaft where the seat is connected with the backrest, and the horizontal rail 210 is installed at the side of the seat cushion frame, horizontally. The positions of the short angled rail 220 and the horizontal rail 210 are fixed and do not change with the change in the seat back position. The three sections of guide rails are provided with the same cylindrical sliding blocks 260 which can slide along the guide rails in a single degree of freedom, the sliding blocks 260 and the guide rails form a moving range, the moving range can only move along the track of the guide rails, the sliding blocks are hinged with the rod pieces to form a revolute pair, and the sliding blocks are used for connecting the guide rails and the rod pieces. The long bar 211 is a T-bar, one end of the cross beam of which is connected to the slider of the horizontal rail 210, and the other end is connected to the slider of the long oblique rail 230. One end of the short rod piece 221 is hinged on the sliding block of the short inclined guide rail 220, and the other end of the short rod piece 221 is hinged on the T-shaped rod short vertical beam of the long rod piece 211, and forms a revolute pair with the long rod piece 211. Through the connection, the rod piece and the guide rail can form a single-degree-of-freedom mechanism, the long rod piece 211 of the driving piece is controlled, and the aim of controlling the motion rule of the whole anti-collision rod piece protection device can be achieved. The sliders 260 on the long diagonal rail 230 and the short diagonal rail 220 are respectively arranged at the uppermost ends of the respective rails in the contracted state.
As shown in fig. 12, the power of the anti-collision rod protection device is provided by a spring 240, one end of the spring 240 is fixed on the seat cushion framework, the other end is connected with a stay wire 251, the stay wire is a flexible metal wire rope, and the stay wire 251 is connected with one end of the long rod 211 through three identical fixed pulleys 250. Three identical fixed pulleys 250 are fixed on the seat cushion framework, so that the direction of force is changed, and a larger contraction space is reserved for the spring 240, so that the force accumulation of the spring 240 is more sufficient.
As shown in fig. 10 to 14, in the crash bar protection device, in the contracted state, the locking electromagnetic latch 320 is not electrified, and the lock head extends outwards. The triggering electromagnetic bolt 310 is not electrified, the lock head extends outwards, and at the moment, the triggering electromagnetic bolt 310 is clamped in a concave hole reserved on the hinged sliding block at the lower end of the long rod piece 211, so that the long rod piece 211 is prevented from moving under the traction of the spring 240. When the anti-collision rod protection device is triggered, the electromagnetic bolt 310 is triggered to electrify, the bolt of the electromagnetic bolt 310 is triggered to retract, the spring 240 pulls the long rod 211 of the driving part, so that the anti-collision rod protection device is rapidly unfolded in a short time, when the lower end of the long rod 211 is hinged with the sliding block to pass through the saw-tooth vibration damping rubber 231 at the left end of the horizontal guide rail 210, the speed is reduced under the elastic damping of the vibration damping rubber, the impact of the sliding block with the locking electromagnetic bolt 320 and the horizontal guide rail 210 is lightened, when the rod passes through the locking electromagnetic bolt 320, the sliding block extrudes the bolt with an inclined surface of the locking electromagnetic bolt 320, the bolt is extruded and retracted by the sliding block, and then the sliding block is finally inserted into a reserved concave hole on the sliding block along with the further forward movement of the sliding block, so that the sliding block and the long rod 211 are locked, and the anti-collision rod protection device is completely unfolded, and the aim of protecting passengers is achieved.
The control method of the automobile side collision passenger protection safety seat provided by the invention consists of an electric control part and a software part.
1. Electric control part
As shown in fig. 15, the electronic control system includes: 12V vehicle-mounted power supply, collision pre-sensing sensor, electric control unit, system reset button, triggering electromagnetic bolt, locking electromagnetic bolt and motor. The collision pre-sensing sensor can be a medium-distance millimeter wave radar ranging speed measuring sensor or a CCD camera vision sensor.
The 12V vehicle-mounted power supply is connected with the collision pre-sensing sensor, the electric control unit and the motor through wires respectively. The electric control unit mainly comprises a signal processing module, a power supply module, a singlechip, a direct-current motor driving circuit and an electromagnetic pin driving circuit. The signal wire of the collision pre-sensing sensor is connected with the signal processing module of the electric control unit, the signal processing such as necessary filtering is carried out, then collision signals are sent to the singlechip, the singlechip judges whether the automobile is dangerous due to side collision or not according to built-in control software, if so, the signal wire is connected with the electromagnetic pin driving circuit of the electric control unit through the I/O port wire, the electromagnetic pin triggering signals are respectively transmitted to the triggering electromagnetic bolt and the locking electromagnetic bolt through the wire connection amplification through the electromagnetic pin driving circuit, the on-off electricity of the triggering electromagnetic bolt and the locking electromagnetic bolt is controlled, and accordingly the extension and retraction of the respective lock pins are controlled. Meanwhile, the singlechip sends out a motor driving signal through the I/O port, and the motor driving signal is transmitted to the direct current motor driving circuit of the electric control unit through the wire connection, and the direct current motor driving circuit works through the wire connection driving motor, so that the electric lifting tilting device is promoted to complete the action. The power supply module of the electric control unit is used for transforming voltage to generate various voltage signals for use by the signal processing module, the singlechip, the direct-current motor driving circuit and the like in the electric control unit. The system reset button is used for controlling maintenance and reset use after the system executes actions and is connected with the I/O port of the singlechip of the electric control unit through a wire.
As shown in fig. 16, as a preferred embodiment, the present invention proposes an implementation embodiment of an electronic control system, where the implementation embodiment includes a single-chip microcomputer PIC16F877A, a dc motor driving circuit and a power module, and the connection relationship is as follows:
(1) Connection of collision pre-sensing sensor and PIC16F877A singlechip
The collision pre-sensing sensor VDD interface is connected with a 12V vehicle-mounted power supply, the collision pre-sensing sensor GND interface is grounded, the collision pre-sensing sensor OUT interface is a signal output interface, and the collision pre-sensing sensor VDD interface is connected with an RAO interface of the single chip microcomputer PIC16F 877A. The VDD interface of the single-chip microcomputer PIC16F877A is connected with the power supply module 5V, and the VSS interface of the single-chip microcomputer PIC16F877A is grounded.
(2) Wiring connection of PIC16F877A single chip microcomputer and DC motor drive circuit
The invention selects a direct current motor driving circuit with the model L928N. The RC0 port of the singlechip is connected with the IN1 interface of the input end of the direct-current motor driving circuit, and the RC1 interface of the singlechip is connected with the IN2 interface of the input end of the direct-current motor driving circuit. The high and low levels of IN1 and IN2 respectively correspond to the high and low levels of OUT1 and OUT2, and the OUT1 and OUT2 output control direct current motors. OUT1 and OUT2 have a voltage difference and a high level and a low level motor can only work. ENA is the enable terminals of OUT1, OUT2, active high. The VCC interface of the DC motor drive circuit is connected with the power module 6V, and the GND interface of the DC motor drive circuit is grounded.
2. Software part
As shown in fig. 17, a control system program written in advance is stored in a singlechip of the electronic control unit, so as to control the extension of the anti-collision rod and the action of the seat lifting and tilting device, and the execution steps are as follows:
step one, a singlechip reads a distance signal S of a speed and distance measuring sensor;
step two, judging whether the distance is smaller than the initial setting S 1 (the minimum braking distance of the automobile under a certain working condition can be changed according to different working conditions), if not, the automobile is indicated to have no side collision danger temporarily, the distance measurement is returned to the previous step, if so, the automobile is indicated to have the possibility of side collision danger, and the next step of speed measurement is carried out;
step three, the singlechip reads a speed signal V measured by a speed and distance measuring sensor;
step four, judging whether the speed is smaller than the initial set value V 1 (the lower speed of the automobile running under a certain working condition, namely that the collision at the speed causes light injury to human bodies, and the automobile can be modified according to different working conditions), if not, the possibility of side collision is increased, the next step is carried out, otherwise, the possibility of side collision is reduced, and the automobile returns to the first step;
step five, judging whether the speed is smaller than the initial set value V 2 (higher speed of the vehicle under certain conditions is considered asThe speed collision causes serious injury to human body and can be modified according to different working conditions), if yes, the side collision impact force is not very intense, step six is executed at the moment, otherwise, the side collision vehicle is considered to carry out side collision at a higher speed, the side collision impact force is very intense, and step seven is executed at the moment;
step six, the seat control system electrifies the triggering electromagnetic pin 310 to perform primary triggering, triggers the electromagnetic pin to shrink and unlock the rod protection device, the rod protection device pops up under the traction of the spring, is locked by the locking electromagnetic pin after popping up, protects the side surface of the passenger, and after a period of time (according to collision conditions, can be modified according to different conditions), the seat control system electrifies the locking electromagnetic pin 320, and the locking electromagnetic pin shrinks and unlocks, so that the anti-collision protection device can be manually retracted. The first-stage triggering only starts the anti-collision rod piece protection device, plays a certain protection role, is convenient for maintenance after collision, enables the rod piece to return easily, and is convenient for repeated use;
and step seven, the singlechip transmits signals to the direct current motor to drive current, the seat control system transmits signals to the electromagnetic bolt to perform secondary triggering, the anti-collision rod piece protection device is unfolded (the same as the step six), the seat lifting and tilting device synchronously works, the motor drives the worm gear to enable the seat to roll around the inner side guide rail, the structural rigidity during lateral collision is improved, and the side face of an occupant is better protected. It should be noted that if the operation of the side airbag and the safety curtain can be triggered synchronously with the side airbag and the safety curtain which are equipped with the original vehicle, the side omnibearing protection of passengers can be greatly improved.
The control method of the automobile side collision passenger protection safety seat has the following working principle:
when the automobile normally runs, the collision pre-sensing sensor arranged on the side face of the automobile detects the relative speed and the relative distance of the lateral moving object, signals of the detected speed and the detected distance are transmitted to the singlechip, and the singlechip processes the signals. When the distance is smaller than the set S 1 It is indicated that there is a risk of side-impact. At this time, the moving speed V of the collision object relative to the vehicle is further detected, if the speed signal is smaller than V 1 When the collision speed is lower, the collision beam in the vehicle door is enough to resist the collision of foreign objects, and the collision rod protection device and the electric rotation protection seat do not work. When the speed signal is greater than or equal to V 1 Less than V 2 When the impact is applied, the side impact can cause a certain threat to the human body. Therefore, the control system energizes the triggering electromagnetic bolt 310, the locking head of the triggering electromagnetic bolt 310 is retracted, and the anti-collision rod protection device is rapidly unfolded under the traction action of the spring 240, so that passengers are protected. In this case, the electric lift tilting device is not operated, called primary triggering, to avoid a situation in which the normal operation of the driver is disturbed due to the triggering of the electric lift tilting device at the time of a light impact. When the speed signal is greater than or equal to V 2 When the collision is considered as severe collision, the control system triggers the electromagnetic bolt 310 to enable the anti-collision rod protection device to be unfolded, and meanwhile, the singlechip transmits a control signal to the direct current motor driving circuit to enable the motor 110 to rotate, so that the seat is enabled to rotate around the seat guide rail to a certain angle towards the inner side of the carriage, the buffer space between the passenger and the vehicle door is increased, and the rigid protection device formed between the passenger and the vehicle door by combining the anti-collision rod protection device is used for avoiding the direct contact between the body of the passenger and the invasion object of the collision, namely the secondary triggering. The automobile side collision passenger protection safety seat based on the automobile seat disclosed by the invention is matched with the passive safety systems such as the door anti-collision steel beam, the seat side airbag, the B-pillar side air curtain and the like of the original automobile, so that the buffering and energy absorbing space during the automobile side collision can be effectively increased, the survival rate of passengers during the automobile side collision can be improved, and the automobile safety can be greatly improved.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (10)
1. An automotive side impact occupant protection safety seat comprising:
a motor;
a worm connected with a motor shaft of the motor;
the worm wheel is meshed with the worm and is coaxially and fixedly connected with a spline shaft;
a rear fixing plate member screw-connected to the rear side of the guide rail below the seat outer side height adjusting bracket;
the rear fixing plate comprises a rear horizontal plate and two rear vertical plates, wherein the rear horizontal plate and the two rear vertical plates are formed by welding, the rear vertical plates are arranged on the rear horizontal plate in parallel at intervals, and first through holes are oppositely formed in the rear vertical plates;
the rear transmission plate is arranged between the two rear vertical plates, a spline hole and a long slideway are arranged on the rear transmission plate, and a rear overhanging shaft pin on the seat outer side heightening bracket slides in the long slideway in a matched manner;
the inner diameter of the spline hole is the same as that of the first through hole, the spline shaft is coaxially arranged, and the spline shaft penetrates through the through hole and then is matched and meshed with the spline hole, so that the rear transmission plate takes the first through hole as the center, and the rear transmission plate rotates under the drive of the spline shaft.
2. The automotive side impact occupant protection safety seat of claim 1 further comprising:
the long inclined guide rail is arranged on the side surface of the seat backrest framework, and a first sliding block capable of sliding is arranged in the long inclined guide rail in a matching manner;
the short inclined guide rail is arranged at the rotating shaft where the seat is connected with the backrest, and a second sliding block which can slide is arranged in the short inclined guide rail in a matching way;
the horizontal guide rail is arranged on the side surface of the seat cushion framework, a third sliding block capable of sliding is arranged in the horizontal guide rail in a matching mode, and a concave hole is formed in the inner side surface of the third sliding block;
the long rod piece comprises a cross beam and a vertical beam, and the two end parts of the cross beam are respectively connected with the first sliding block and the third sliding block;
one end of the short rod piece is connected with the second sliding block, and the other end of the short rod piece is connected with the end part of the vertical beam;
one end of the spring is fixedly connected to the seat framework;
a plurality of fixed pulleys fixed to the seat frame;
one end of the stay wire is connected with the other end of the spring, and the other end of the stay wire is connected with the bottom of the long rod piece;
triggering an electromagnetic latch, which is arranged between the seat cushion framework and the horizontal guide rail;
the locking electromagnetic bolt is arranged between the seat cushion framework and the horizontal guide rail and is parallel to the triggering electromagnetic bolt;
when the triggering electromagnetic bolt is not electrified, the triggering electromagnetic bolt is clamped in the concave hole and used for supporting the long rod piece; when the triggering electromagnetic bolt is electrified, the triggering electromagnetic bolt is retracted, and the long rod piece moves under the drive of the pull wire pulled by the spring until the locking electromagnetic bolt is clamped in the concave hole, so that the long rod piece and the short rod piece are unfolded.
3. The automotive side impact occupant protection safety seat of claim 2 further comprising: the shell is fixedly connected with the shell of the motor and comprises a cuboid and a cylindrical accommodating cavity which are communicated with each other;
the cuboid accommodating cavity is used for accommodating the worm, and the cylindrical cavity is used for accommodating the worm wheel.
4. A side-impact occupant protection safety seat for a vehicle as claimed in claim 2 or 3, further comprising:
a front fixing plate which is in threaded connection with the front side of the guide rail below the seat outer side heightening bracket;
the front fixing plate comprises a front horizontal plate and two front vertical plates which are welded, wherein the front vertical plates are arranged on the front horizontal plate in parallel at intervals, and second through holes are oppositely formed in the front vertical plates;
the front transmission plate is arranged between the two front vertical plates, a third through hole and a through groove are formed in the front transmission plate, and a front overhanging shaft pin on the seat outer side height-adjusting bracket slides in the through groove in a matched manner;
wherein the inner diameter of the second through hole is the same as the inner diameter of the third through hole, and the second through hole and the third through hole are coaxially arranged;
and a cylindrical shaft pin passing through and hinging the second through hole and the third through hole at the same time.
5. The automotive side impact occupant protection safety seat of claim 4 further comprising: the hinge is connected between the seat inner side heightening bracket and the movable guide rail, and the opening direction of the hinge points to the outer side.
6. The vehicle side impact occupant protection safety seat according to claim 5, wherein the horizontal rail front end is provided with a vibration damping rubber.
7. The vehicle side impact occupant protection safety seat according to claim 6, wherein said rear drive plate member is rotated by 5 to 30 ° by the drive of said spline shaft.
8. The automotive side impact occupant protection safety seat of any one of claims 2-3, 5, 6 or 7, further comprising:
the electric control unit comprises a signal processing module, a power module, a singlechip, a direct-current motor driving circuit and an electromagnetic bolt driving circuit;
the collision pre-sensing sensor is used for receiving the data of the signal processing module and transmitting the data to the singlechip;
the system reset button is electrically connected with the singlechip and used for resetting or maintaining;
and the vehicle-mounted power supply is used for simultaneously electrically connecting the collision pre-sensing sensor, the electric control unit, the system reset button and the motor.
9. A control method of a side-impact occupant protection safety seat for a vehicle, characterized by using the side-impact occupant protection safety seat for a vehicle according to claim 8, comprising the steps of:
step one, collecting the distance S between the vehicle and the side vehicle and comparing the distance S with the initial setting S 1 Comparing and judging if S is more than or equal to S 1 Then it is indicated that there is no side collision risk, if S<S 1 A side collision risk is indicated;
step two, when judging that there is a side collision risk, collecting the vehicle speed V and setting the vehicle speed V with the first initial setting V 1 Make a comparison judgment if V<V 1 Indicating a reduced probability of side impact if V.gtoreq.V 1 The possibility of side collision is indicated to be raised;
step three, when the possibility of side collision is judged to be increased, the second initial setting V 2 Make a comparison judgment if V<V 2 The side impact force is not very severe, if V is greater than or equal to V 2 The side impact force is shown to be very severe;
step four, triggering the electromagnetic bolt to electrify when judging that the side collision force is not very intense, and enabling the motor not to electrify; when the side collision force is judged to be very severe, the electromagnetic bolt is triggered to be electrified, and the motor is electrified.
10. The control method for protecting a passenger in a side collision of a car according to claim 9, wherein when it is judged that there is a side collision risk, the electromagnetic latch driving circuit is connected through an I/O port line of the single chip microcomputer, an electromagnetic latch trigger signal is transmitted to the trigger electromagnetic latch and the locking electromagnetic latch through the electromagnetic latch driving circuit by wire connection amplification, and the on-off of the trigger electromagnetic latch and the locking electromagnetic latch is controlled, thereby controlling the extension and retraction of the respective latches thereof.
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| CN201811009491.0A CN108973803B (en) | 2018-08-31 | 2018-08-31 | Safety seat for protecting passengers during side collision of automobile and control method thereof |
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| CN201811009491.0A CN108973803B (en) | 2018-08-31 | 2018-08-31 | Safety seat for protecting passengers during side collision of automobile and control method thereof |
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| CN108973803B true CN108973803B (en) | 2024-02-20 |
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| CN201811009491.0A Active CN108973803B (en) | 2018-08-31 | 2018-08-31 | Safety seat for protecting passengers during side collision of automobile and control method thereof |
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| WO2024020999A1 (en) * | 2022-07-29 | 2024-02-01 | 华为技术有限公司 | Collision protection device and method, seat, vehicle, and storage medium |
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