CN109178090B - Steering column with energy absorber - Google Patents
Steering column with energy absorber Download PDFInfo
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- CN109178090B CN109178090B CN201810903930.6A CN201810903930A CN109178090B CN 109178090 B CN109178090 B CN 109178090B CN 201810903930 A CN201810903930 A CN 201810903930A CN 109178090 B CN109178090 B CN 109178090B
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- steering column
- energy absorbing
- absorbing
- square tube
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
- B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
- B62D1/19—Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
- B62D1/195—Yieldable supports for the steering column
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering Controls (AREA)
Abstract
The invention relates to the field of automobile steering columns, in particular to a steering column with an energy absorbing device, which comprises a steering wheel input device, an upper pipe steering column, a lower pipe steering column, an energy absorbing unit and a disengaging unit, wherein the tail end of the upper pipe steering column is in transmission connection with one end of the lower pipe steering column through a universal joint, the energy absorbing unit is arranged at the other end of the lower pipe steering column, and is positioned at the side edge of the lower pipe steering column facing the direction of an automobile cab in an installation state, the lower part of the steering wheel input device is connected with a transmission shaft in a shaft way, the transmission shaft is in transmission connection with a steering wheel in the steering wheel input device, the tail end of the transmission shaft is in an open arrangement, and the top end of the upper pipe steering column is in transmission connection with one end of the transmission shaft in a detachable way through the disengaging unit.
Description
Technical Field
The invention relates to the field of automobile steering columns, in particular to a steering column with an energy absorbing device.
Background
With the development of science and technology and the improvement of living standard of people, automobiles have become an indispensable part of daily life of people. The change of the driving direction of the automobile is realized by changing the deflection angle of the steering wheel by the driver through operating the steering system, so that the automobile can drive in a fixed direction of the driver. The steering system of the automobile generally comprises a steering wheel input device, a steering gear and a steering transmission mechanism, wherein the steering wheel input device comprises a steering wheel, a steering shaft and the like. When the running direction of the automobile needs to be adjusted, a driver transmits force to the steering gear and the steering transmission mechanism through the steering wheel, and the steering transmission mechanism transmits power output by the steering gear to steering wheels to realize the steering of the automobile.
Because the driver needs to operate the steering wheel input device, the steering wheel input device is very close to the driver, if the vehicle is in an accident, the impact force in the accident can be transmitted to the steering wheel input device through the steering transmission mechanism and then transmitted to the driver, and thus, the impact force can cause great damage to important parts of the human body such as the chest or the head of the driver, and the damage occupies 46 percent of the total damage of the driver according to the data, and the proportion is close to half.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a steering column with an energy absorbing device.
In order to solve the problems, the invention provides the following technical scheme:
the utility model provides a steering column with energy-absorbing device, including steering wheel input device, still include the upper tube steering column, down tube steering column, energy-absorbing unit and break away from the unit, the end of upper tube steering column is connected through the one end transmission of universal joint and down tube steering column, the energy-absorbing unit sets up the other end at down tube steering column, and it is in under the installed state, the energy-absorbing unit is located down tube steering column and is towards the side of automobile cab direction, and be 50 degrees contained angles setting between energy-absorbing unit and the down tube steering column, steering wheel input device's lower part coupling has the transmission axle, the transmission axle is connected with the steering wheel transmission in the steering wheel input device, the end of transmission axle is uncovered setting, and the transmission that this one end of upper tube steering column can be dismantled through breaking away from the unit and transmission axle is connected.
Further, the energy-absorbing unit includes the spacer block and two energy-absorbing pieces, the spacer block is cylinder barrel structure, the spacer block cover is established on down the pipe steering column, and down the pipe steering column can be around self axis pivoted with the internal surface cooperation of spacer block, two energy-absorbing pieces symmetry are installed in the periphery of spacer block, the structure of two energy-absorbing pieces is the same, the energy-absorbing piece includes energy-absorbing pole and energy-absorbing square tube, the one end and the surface coupling of spacer block of energy-absorbing pole, the other end at the energy-absorbing pole is established to energy-absorbing square tube, and this one end of energy-absorbing pole can be at the interior horizontal activity of energy-absorbing square tube, the energy-absorbing square tube is in the installed state, its one end that keeps away from the energy-absorbing pole passes through torsional spring coupling inside the frame, the inside of energy-absorbing square tube is provided with energy-absorbing buffer.
Further, the energy-absorbing buffer piece comprises a plurality of energy-absorbing springs, a plurality of concave holes are formed in the front side surface and the rear side surface in the energy-absorbing square tube, all concave holes in each side surface are arranged at intervals along the length direction of the energy-absorbing square tube in sequence, all the energy-absorbing springs are respectively located in one concave hole, one end of each energy-absorbing spring is elastically connected with the bottom of each concave hole, the other end of each energy-absorbing spring is welded with a ball head, the energy-absorbing springs are in a normal state, and the ball heads are located outside the concave holes.
Further, one end of the energy-absorbing square tube, which is far away from the energy-absorbing rod, is of a closed structure, one end of the energy-absorbing rod, which is positioned in the energy-absorbing square tube, is of an edge rounding structure, and the one end of the energy-absorbing rod is elastically connected with the bottom wall in the energy-absorbing square tube through a contact spring.
Further, the surface of upper tube steering column has seted up first ring channel, and first ring channel is close the top of upper tube steering column, and the non return ring channel has been seted up to the internal surface of first ring channel, is provided with the non return ring dish between first ring channel and the top of upper tube steering column, and the non return ring dish cover is established on the upper tube steering column, and the top of upper tube steering column is provided with a plurality of first grafting strips of Xiang Dengjiao degrees distributions of week along.
Further, be equipped with the location axle in the open end of transmission axle, the outer peripheral face of location axle is provided with a plurality of second grafting strips of Xiang Dengjiao degrees distributions in week along it, the extending direction of second grafting strip is parallel with the axial of location axle, the type groove that can with the top of upper tube steering column and all first grafting strip amalgamation is seted up to the outer end that the transmission axle was kept away from to the location axle, the inner of location axle passes through positioning spring and transmission axle elastic connection, the location axle can be along the axial activity setting of transmission axle through all second grafting strips, a plurality of slots of wearing have been seted up on the non return ring dish, every slot of wearing supplies a second grafting strip respectively can vertically run through.
Further, break away from the unit and include support, outside extension board, inboard extension board and cylinder, the support is in under the mounted condition, fix in the frame inside, and the installation gesture of support constitutes 90 degrees right angles with the axial of upper tube steering column, the symmetry is provided with two and ends the back arc piece in the first ring channel, the concave surface of ending the back arc piece is wrapped up the groove surface in with first ring channel, be located one side that the cab direction was kept away from to first ring channel and is connected through outside extension board and support, another one ends the back arc piece and inserts that to establish in the support that the inboard extension board can be movable through inboard extension board, the inboard extension board passes through reset spring and the inside elastic connection of support, the top of support is provided with the non return piece, the non return piece is vertical run through to in the support, and the end that inboard extension board is located the support is hugged closely all the time to the end of non return piece, the cylinder is installed in the support and is kept away from the one end of inboard extension board, the cylinder is used for driving the non return piece and draws out outside the support.
Further, a positioning arc strip is respectively arranged in the concave surfaces of the two non-return arc pieces, and each positioning arc strip is respectively extruded into the non-return annular groove under the working state.
Further, the output end of the cylinder is provided with a retracting plate with one end in transmission connection with the cylinder, the outer end of the positioning shaft is fixedly sleeved with a pulling ring, the other end of the retracting plate is provided with a circular notch, and the pulling ring can be rotationally embedded in the circular notch around the axis of the pulling ring.
The beneficial effects are that: according to the steering column with the energy absorbing device, if the front end of a vehicle is impacted in a driving process, the impact force is firstly transmitted to the lower tube steering column, the lower tube steering column is subjected to the impact force, the impact force is transmitted to the direction of a driving cab and is transmitted to the upper tube steering column through the universal joint, in the process, the energy absorbing rod is subjected to the impact force transmitted by the lower tube steering column, so that the energy absorbing square tubes shrink inwards, in the shrinking process, the two sides of the energy absorbing rod start to squeeze all the ball heads one by one, the ball heads are forced to compress the energy absorbing springs into concave holes, the impact force is further absorbed, meanwhile, the energy absorbing square tubes start to rotate due to the forced shrinking force of the energy absorbing rod, so that the shrinkage stroke of the energy absorbing rod is matched, meanwhile, the end part of the energy absorbing rod always contacts with the spring in the forced shrinking process, the energy absorbing square tubes are prevented from being penetrated by the energy absorbing square tubes due to the excessive impact force, and the abutting spring always serves as one of important springs for absorbing energy; and notes: the front end of the existing vehicle is provided with a plurality of collision sensors, the sensors are electrically connected with an automatic control system of the vehicle, the air cylinder is electrically connected with the automatic control system of the vehicle, in the process of forcedly contracting the energy absorption rod, the collision sensors absorb the impact force and buffer the transmission time of the impact force by means of the contact spring and the energy absorption spring, so the collision sensors receive signals and rapidly transmit the signals to the control system, the control system enables the air cylinder to work, the piston end of the air cylinder stretches out and moves, the positioning shaft is pushed to be retracted into the transmission shaft through the retracting plate and the pulling ring, the positioning shaft is separated from the top end of the upper pipe steering column, in the process of stretching out of the piston end of the air cylinder, the check block and the positioning shaft are also moved in the same direction, namely, the vertical gesture is pulled out of the support, and then a check arc piece is released, the check arc piece is retracted through the reset spring, one side part of the upper pipe steering column is further enabled to have no supporting force, and then the upper pipe steering column begins to deform or incline due to the impact force transmitted by the lower pipe steering column, the impact force is greatly damaged by the impact force transmitted to the steering column, and the impact force is greatly reduced, and the impact force is not damaged by the steering column is absorbed by the driver in the process, and the steering column is greatly damaged by the steering column is directly in the driver.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic diagram of a second perspective structure of the present invention;
FIG. 3 is an enlarged view of FIG. 2 at A;
FIG. 4 is a side view of the present invention;
FIG. 5 is a partial perspective cutaway view of the present invention;
FIG. 6 is an enlarged view at B in FIG. 5;
FIG. 7 is a schematic view of a partial assembly structure of the present invention;
FIG. 8 is an enlarged view of FIG. 7 at C;
fig. 9 is an enlarged view of D in fig. 7;
FIG. 10 is a partial perspective sectional view II of the present invention;
reference numerals illustrate: steering wheel input device 1, transmission shaft 2, positioning spring 2a, positioning shaft 2b, pulling ring 2c, groove 2q, second plug strip 2u
The upper tube column 3, a first annular groove 3a, a non-return annular groove 3b, a non-return annular disc 3c, an insertion groove 3q and a first insertion strip 3w.
Lower tubular column 4, universal joint 4a.
The energy-absorbing unit 5, the isolation block 5a, the energy-absorbing piece 5b, the energy-absorbing rod 5b1, the edge rounding structure 5b2, the contact spring 5b3, the energy-absorbing square pipe 5b4, the concave hole 5b5, the energy-absorbing spring 5b6 and the ball head 5b7.
The device comprises a disengaging unit 6, a support 6a, a check block 6b, an outer support plate 6c, an inner support plate 6d, a return spring 6q, a cylinder 6w, a retracting plate 6t and a circular notch 6j.
The arc-stopping piece 7 positions the arc-shaped strip 7a.
Detailed Description
Specific embodiments of the invention are described in further detail below with reference to the drawings and examples of the specification:
referring to fig. 1 to 10, a steering column with an energy absorber includes a steering wheel input device 1, an upper steering column 3, a lower steering column 4, an energy absorber 5 and a release unit 6, wherein the end of the upper steering column 3 is connected with one end of the lower steering column 4 through a universal joint 4a in a transmission manner, the energy absorber 5 is arranged at the other end of the lower steering column 4, and in a mounting state, the energy absorber 5 is positioned at the side edge of the lower steering column 4 facing the direction of an automobile cab, an included angle of 50 degrees is formed between the energy absorber 5 and the lower steering column 4, a transmission shaft 2 is connected with the lower part of the steering wheel input device 1 in a transmission manner, the end of the transmission shaft 2 is in an open arrangement, and the top end of the upper steering column 3 is detachably connected with the one end of the transmission shaft 2 through the release unit 6.
The energy absorbing unit 5 comprises an isolation block 5a and two energy absorbing pieces 5b, the isolation block 5a is of a cylindrical barrel structure, the isolation block 5a is sleeved on the lower tubular column 4, the lower tubular column 4 can rotate around the axis of the isolation block and is matched with the inner surface of the isolation block 5a, the two energy absorbing pieces 5b are symmetrically arranged on the periphery of the isolation block 5a, the two energy absorbing pieces 5b are identical in structure, each energy absorbing piece 5b comprises an energy absorbing rod 5b1 and an energy absorbing square pipe 5b4, one end of the energy absorbing rod 5b1 is in shaft connection with the outer surface of the isolation block 5a, the energy absorbing square pipe 5b4 is sleeved at the other end of the energy absorbing rod 5b1, the one end of the energy absorbing rod 5b1 can horizontally move in the energy absorbing square pipe 5b4, in an installation state, one end of the energy absorbing square pipe 5b4 far away from the rod 5b1 is connected inside a frame through a torsion spring shaft, and an energy absorbing buffer piece is arranged inside the square pipe 5b 4; one end of the energy-absorbing square tube 5b4, which is far away from the energy-absorbing rod 5b1, is connected inside the frame through a torsion spring in an installation state, and the lower tube steering column 4 is installed inside the frame; during driving, a person manipulates the steering wheel input device 1 to force the upper tube steering column 3 to rotate, then the lower tube steering column 4 is rotated through the universal joint 4a, and during rotation of the lower tube steering column 4, the isolation block 5a is used as a tail end guide, so that the isolation block 5a is kept still, the lower tube steering column 4 can still rotate around the axis of the lower tube steering column, and in the phase change, the energy absorption rod 5b1 and the energy absorption square tube 5b4 are kept static all the time during normal safe driving.
The energy-absorbing buffer piece comprises a plurality of energy-absorbing springs 5b6, a plurality of concave holes 5b5 are formed in the front side surface and the rear side surface in the energy-absorbing square tube 5b4, all the concave holes 5b5 of each side surface are sequentially arranged at intervals along the length direction of the energy-absorbing square tube 5b4, all the energy-absorbing springs 5b6 are respectively positioned in one concave hole 5b5, one end of each energy-absorbing spring 5b6 is elastically connected with the hole bottom of the concave hole 5b5, a ball head 5b7 is welded at the other end, the energy-absorbing springs 5b6 are in a normal state, and the ball heads 5b7 are positioned outside the concave holes 5b 5; if the front end of the vehicle is impacted during driving, the impact force is firstly transmitted to the lower tube steering column 4, the lower tube steering column 4 is impacted, part of the impact force is transmitted to the upper tube steering column 3 in the direction of the cab, and part of the impact force is transmitted to the upper tube steering column 3 through the universal joint 4a, in the process, the energy-absorbing rod 5b1 is subjected to the impact force transmitted by the lower tube steering column 4, so that the energy-absorbing square tubes 5b4 shrink inwards, in the shrinking process, the two sides of the energy-absorbing rod 5b1 start to press all the ball heads 5b7 one by one, the ball heads 5b7 are forced to compress the energy-absorbing springs 5b6 to squeeze into the concave holes 5b5, part of the impact force is further absorbed, meanwhile, the energy-absorbing square tubes 5b4 start to rotate due to the forced shrinkage force of the energy-absorbing rod 5b1, so that the shrinking stroke of the energy-absorbing rod 5b1 is matched, and the time for bending deformation of the lower tube steering column 4 is buffered, and the time for the upper tube steering column 3 and the steering wheel input device 1 are fully separated.
One end of the energy-absorbing square tube 5b4 far away from the energy-absorbing rod 5b1 is of a closed structure, one end of the energy-absorbing rod 5b1 positioned in the energy-absorbing square tube 5b4 is of an edge rounding structure 5b2, and the one end of the energy-absorbing rod 5b1 is elastically connected with a bottom wall in the energy-absorbing square tube 5b4 through a contact spring 5b 3; when the energy absorption rod 5b1 is contracted in the energy absorption square tube 5b4 under the impact force, the side rounding structure 5b2 can enable the energy absorption rod 5b1 to fully and smoothly squeeze all the ball heads 5b7, and the contact spring 5b3 is a large-sized spring, so that the rigidity is high, and the phenomenon that the energy absorption rod 5b1 penetrates through the energy absorption square tube 5b4 due to the fact that the impact force is too strong is prevented, so that personnel in a cab are threatened.
The outer surface of the upper pipe column 3 is provided with a first annular groove 3a, the first annular groove 3a is close to the top end of the upper pipe column 3, the inner surface of the first annular groove 3a is provided with a non-return annular groove 3b, a non-return ring disc 3c is arranged between the first annular groove 3a and the top end of the upper pipe column 3, the non-return ring disc 3c is sleeved on the upper pipe column 3, and the top end of the upper pipe column 3 is provided with a plurality of first plugging strips 3w distributed along the circumference Xiang Dengjiao degrees; under the normal state, the upper pipe steering column 3 and the transmission shaft 2 are in a splicing state, and the transmission shaft 2 rotates, so that the upper pipe steering column 3 can synchronously rotate along with the rotation;
a positioning shaft 2b is arranged in the open end of the transmission shaft 2, a plurality of second inserting strips 2u distributed along the periphery Xiang Dengjiao degrees are arranged on the outer peripheral surface of the positioning shaft 2b, the extending direction of the second inserting strips 2u is parallel to the axial direction of the positioning shaft 2b, a groove 2q which can be spliced with the top end of the upper pipe column 3 and all the first inserting strips 3w is formed in the outer end of the positioning shaft 2b far away from the transmission shaft 2, the inner end of the positioning shaft 2b is elastically connected with the transmission shaft 2 through a positioning spring 2a, the positioning shaft 2b can be movably arranged along the axial direction of the transmission shaft 2 through all the second inserting strips 2u, a plurality of penetrating slots 3q are formed in a check ring disc 3c, and each penetrating slot 3q is respectively provided with one second inserting strip 2u to vertically penetrate; the transmission shaft 2 and the upper pipe column 3 are connected in a normal state in the following manner: at least half of the positioning shaft 2b extends out of the transmission shaft 2, namely, one end of the positioning shaft 2b wraps the top end of the upper pipe column 3 through the groove 2q, and the positioning shaft 2b and the upper pipe column 3 are in a fixed sleeved state due to the arrangement of the first plugging strip 3w; the end parts of a plurality of second plugging strips 2u on the positioning shaft 2b are respectively penetrated through the penetrating grooves 3q, and the positioning shaft 2b and the upper pipe column 3 are stably plugged in and out by matching with the check ring disc 3 c; due to the arrangement of the positioning spring 2a, the positioning shaft 2b is forced to be sleeved at the top end of the upper tube steering column 3 in a pressing state, and the arrangement ensures that the upper tube steering column 3 can stably and synchronously rotate through the positioning shaft 2b in the rotation of the subsequent transmission shaft 2, so that the steering moment is transmitted.
The disengaging unit 6 comprises a support 6a, an outer support plate 6c, an inner support plate 6d and a cylinder 6w, wherein the support 6a is fixed in the frame in an installation state, the installation posture of the support 6a and the axial direction of the upper pipe column 3 form a right angle of 90 degrees, two anti-return arc pieces 7 are symmetrically arranged in the first annular groove 3a, the concave surfaces of the anti-return arc pieces 7 wrap the groove surfaces in the first annular groove 3a, one anti-return arc piece 7 positioned in the direction of the first annular groove 3a far away from a cab is connected with one side of the support 6a through the outer support plate 6c, the other anti-return arc piece 7 is movably inserted in the support 6a through the inner support plate 6d, the inner support plate 6d is elastically connected with the inside of the support 6a through a return spring 6q, a check block 6b is arranged above the support 6a, the check block 6b vertically penetrates into the support 6a, the tail end of the check block 6b is always clung to one end of the inner support plate 6d positioned in the support 6a, the cylinder 6w is installed at one end of the inner support plate 6a far away from the cab, and the other end of the support 6d is driven out of the cylinder 6 b; the upper tube column 3 is installed in the frame through the matching of the air cylinder 6w, and the concrete normal state is as follows: the two non-return arc pieces 7 are tightly adhered to the first annular groove 3a, and a ball small bearing is arranged in the non-return arc piece 7, so that the subsequent upper pipe column 3 can rotate around the axis of the non-return arc piece 7 and cannot be limited by the non-return arc piece 7, and the non-return arc piece 7 only simply supports the upper pipe column 3 to a set posture and does not stop and limit the upper pipe column 3; however, after the vehicle is impacted, the air cylinder 6w can enable the check block 6b at the position of the air cylinder to be pulled out of the support 6a, so that the check arc piece 7 contacted with the check block 6b in advance is retracted through the return spring 6q, and the limiting effect on the first annular groove 3a is released;
a positioning arc-shaped strip 7a is respectively arranged in the concave surfaces of the two non-return arc-shaped sheets 7, and each positioning arc-shaped strip 7a is respectively extruded into the non-return annular groove 3b in the working state; the positioning arc-shaped strip 7a is matched with the check arc-shaped piece 7 to ensure the stability of the transmission connection between the upper pipe column 3 and the transmission shaft 2 synchronously, namely, a ball small bearing is also arranged in the concave surface of the positioning arc-shaped strip 7a, so that the groove surface of the check annular groove 3b is in running fit with the positioning arc-shaped strip 7 a; it is further ensured that the upper tubular column 3 does not generate unstable wobble in its radial direction in normal state, and even comes off from the transmission shaft 2.
The output end of the cylinder 6w is provided with a retracting plate 6t with one end in transmission connection with the cylinder, the outer end of the positioning shaft 2b is fixedly sleeved with a pulling ring 2c, the other end of the retracting plate 6t is provided with a circular notch 6j, and the pulling ring 2c can be rotationally embedded in the circular notch 6j around the axis of the pulling ring; the front end of the existing vehicle is provided with a plurality of collision sensors, the sensors are electrically connected with an automatic control system of the vehicle, the air cylinder 6w is electrically connected with the automatic control system of the vehicle, after the vehicle is impacted, the collision sensors receive signals and rapidly transmit the signals to the control system, the control system enables the air cylinder 6w to work, the piston end of the air cylinder 6w stretches out and moves, and then the positioning shaft 2b is abutted through the retracting plate 6t and the pulling ring 2c, namely, is pushed to retract into the transmission shaft 2, so that the positioning shaft 2b is separated from the top end of the upper pipe column 3, and in the process that the piston end of the air cylinder 6w stretches out, the check block 6b and the positioning shaft 2b also move in the same direction, namely, are pulled out of the support 6a in a vertical posture, so that a check arc piece 7 is released, the check arc piece 7 is retracted through the reset spring 6q, the upper pipe column 3 is further free of supporting force, and begins to incline or deform, and the separation from the steering wheel input device 1 is further achieved, and the impact force is prevented from being transmitted to the steering wheel 1 to the driver, so that the driver is injured; in addition, in a normal state of the vehicle, the positioning shaft 2b is abutted against the positioning shaft 2b to enable the positioning shaft to ascend only when the pulling ring 2c and the retracting plate 6t are retracted, namely the retracting plate 6t ascends.
Working principle: if the front end of a vehicle is impacted during driving, the impact force is firstly transmitted to the lower pipe steering column 4, the lower pipe steering column 4 is impacted, part of the impact force is transmitted to the upper pipe steering column 3 in the direction of a cab, and part of the impact force is transmitted to the upper pipe steering column 3 through the universal joint 4a, in the process, the energy-absorbing rod 5b1 is impacted by the impact force transmitted by the lower pipe steering column 4, so that the energy-absorbing square pipes 5b4 shrink inwards, in the shrinkage process, both sides of the energy-absorbing rod 5b1 start to press all ball heads 5b7 one by one, the ball heads 5b7 are forced to compress the energy-absorbing springs 5b6 and squeeze into the concave holes 5b5, part of the impact force is further absorbed, meanwhile, the energy-absorbing square pipes 5b4 start to rotate due to the forced shrinkage force of the energy-absorbing rod 5b1, so that the shrinkage stroke of the energy-absorbing rod 5b1 is matched, meanwhile, the end part of the energy-absorbing rod 5b1 always collides with the spring 5b3 in forced shrinkage, the energy-absorbing square pipes 5b4 are prevented from being broken due to the impact force; and notes: the front end of the existing vehicle is provided with a plurality of collision sensors, the sensors are electrically connected with an automatic control system of the vehicle, a cylinder 6w is electrically connected with the automatic control system of the vehicle, in the process of forcedly contracting an energy absorption rod 5b1, the collision sensors absorb the impact force and buffer the transmission time of the impact force by means of a contact spring 5b3 and an energy absorption spring 5b6, so that the collision sensors receive signals and rapidly transmit the signals to a control system, the control system enables the cylinder 6w to work, the piston end of the cylinder 6w stretches out and moves, and then the positioning shaft 2b is pushed to be retracted into the transmission shaft 2 through a retraction plate 6t and a pulling ring 2c, so that the positioning shaft 2b is separated from the top end of an upper pipe column 3, and the piston end of the cylinder 6w stretches out, a check block 6b and the positioning shaft 2b move in the same direction, namely, the vertical gesture is pulled out of a support 6a, and then a stop arc piece 7 is released, so that the check piece 7 is retracted through a reset spring 6q, the upper pipe 3 is further enabled, the upper pipe side part is enabled to work, the impact force is not transmitted to the upper pipe 3, and the driver is not damaged, and the driver is enabled to be deformed, or the driver is enabled to be deformed, and the force is not to be transmitted to the upper pipe 3, or the driver is greatly deformed, and the force is deformed, and the driver is caused.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present invention are still within the scope of the technical solutions of the present invention.
Claims (3)
1. Steering column with energy absorber, comprising a steering wheel input device (1), characterized in that: the automobile steering column comprises an upper pipe steering column (3), a lower pipe steering column (4), an energy absorbing unit (5) and a disengaging unit (6), wherein the tail end of the upper pipe steering column (3) is in transmission connection with one end of the lower pipe steering column (4) through a universal joint (4 a), the energy absorbing unit (5) is arranged at the other end of the lower pipe steering column (4) and is in a mounting state, the energy absorbing unit (5) is positioned at the side edge of the lower pipe steering column (4) facing the direction of an automobile cab, an included angle of 50 degrees is formed between the energy absorbing unit (5) and the lower pipe steering column (4), the lower part of a steering wheel input device (1) is connected with a transmission shaft (2) in a shaft way, the tail end of the transmission shaft (2) is in an open way, the top end of the upper pipe steering column (3) is in detachable transmission connection with one end of the transmission shaft (2) through the disengaging unit (6), the energy absorbing unit (5) comprises an isolation block (5 a) and two isolation pieces (5 b), the isolation block (5 a) and the isolation block (5 b) are arranged on the periphery of the two isolation blocks (5 a) and the two isolation blocks (5 b) are arranged on the periphery of the same circumference of the isolation block (5 a) in a symmetrical manner, the two isolation blocks (5 a) are arranged on the periphery of the isolation block (5 a) and the isolation block (5 b) and the two isolation pieces are arranged on the cylinder (5 a cylinder (5 b) and are in a cylinder (5) in a rotation, the energy absorbing piece (5 b) comprises an energy absorbing rod (5 b 1) and an energy absorbing square tube (5 b 4), one end of the energy absorbing rod (5 b 1) is connected with the outer surface of the isolation block (5 a) in a shaft mode, the energy absorbing square tube (5 b 4) is sleeved at the other end of the energy absorbing rod (5 b 1), the one end of the energy absorbing rod (5 b 1) can horizontally move in the energy absorbing square tube (5 b 4), the one end of the energy absorbing square tube (5 b 4) far away from the energy absorbing rod (5 b 1) is connected inside a frame through a torsion spring in an installation state, an energy absorbing buffer piece is arranged inside the energy absorbing square tube (5 b 4), the energy absorbing buffer piece comprises a plurality of energy absorbing springs (5 b 6), a plurality of concave holes (5 b 5) are respectively formed in the front side face and the rear side face of the energy absorbing square tube (5 b 4), all the concave holes (5 b 5) are orderly arranged at intervals along the length direction of the square tube (5 b 4), all the energy absorbing springs (5 b 6) are respectively located in one concave hole (5 b 5), one end of each energy absorbing square tube (5 b 6) is connected with one end of each annular groove (3 a) close to the first annular groove (3 a), one end of each annular groove (3 a) is located on the outer surface (3 b) of the first annular groove (3 a, one end (3 b) is close to the first end (3 a) of the annular groove (3 a), one end (3 b) is located on the first end (3 b) of the annular groove (3 a), and the other end (3 b) is located on the end (3 b end is close to the end of the first end (3 b) and the end (3, a check ring disc (3 c) is arranged between the first annular groove (3 a) and the top end of the upper pipe column (3), the check ring disc (3 c) is sleeved on the upper pipe column (3), a plurality of first inserting strips (3 w) distributed along the circumference Xiang Dengjiao degrees are arranged at the top end of the upper pipe column (3), a positioning shaft (2 b) is arranged in the open end of the transmission shaft (2), a plurality of second inserting strips (2 u) distributed along the circumference Xiang Dengjiao degrees are arranged on the outer circumferential surface of the positioning shaft (2 b), the extending direction of the second inserting strips (2 u) is parallel to the axial direction of the positioning shaft (2 b), a groove (2 q) which can be spliced with the top end of the upper pipe column (3) and all the first inserting strips (3 w) is formed at the outer end of the positioning shaft (2), the inner end of the positioning shaft (2 b) is elastically connected with the transmission shaft (2) through a positioning spring (2 a), the positioning shaft (2 b) can be separated from the inner side (6 a) of the first inserting strip (6 a) through all the second inserting strips (2 a) along the axial direction of the positioning shaft (3 b), the inner side (6 a) can be separated from the first inserting strips (6 a) and the inner side (6 d) of the first inserting strips (6 a) and the second inserting strips (6 b) can be separated from the first inserting strips (6 a) and the second inserting strips (6 b) respectively, fix inside the frame to the installation gesture of support (6 a) constitutes 90 degrees right angles with the axial of upper tube steering column (3), the symmetry is provided with two and ends back arc piece (7) in first ring channel (3 a), the concave surface of back arc piece (7) wraps up the grooved surface in first ring channel (3 a), be located one back arc piece (7) of cab direction is kept away from to first ring channel (3 a), be connected through one side of outside extension board (6 c) with support (6 a), another one ends back arc piece (7) are passed through inboard extension board (6 d) and can be movable insert and establish in support (6 a), inboard extension board (6 d) are passed through reset spring (6 q) and are provided with back stop (6 b) in support (6 a), back stop (6 b) are vertical run through in support (6 a), and the end that is kept away from in back stop (6 b) is always hugged closely inboard extension board (6 d) in support (6 a), one end that cylinder (6 d) is located support (6 a), install in extension board (6 d) outside extension board (6 a) and keep away from outside extension board (6 a) drive end (6 w).
2. A steering column with an energy absorber according to claim 1, wherein: one end of the energy-absorbing square tube (5 b 4) far away from the energy-absorbing rod (5 b 1) is of a closed structure, one end of the energy-absorbing rod (5 b 1) positioned in the energy-absorbing square tube (5 b 4) is of an edge rounding structure (5 b 2), and the one end of the energy-absorbing rod (5 b 1) is elastically connected with the bottom wall in the energy-absorbing square tube (5 b 4) through a contact spring (5 b 3).
3. A steering column with an energy absorber according to claim 1, wherein: the output end of the cylinder (6 w) is provided with a retracting plate (6 t) with one end in transmission connection with the cylinder, the outer end of the positioning shaft (2 b) is fixedly sleeved with a pulling ring (2 c), the other end of the retracting plate (6 t) is provided with a circular notch (6 j), and the pulling ring (2 c) can be embedded in the circular notch (6 j) in a rotating way around the axis of the pulling ring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810903930.6A CN109178090B (en) | 2018-08-09 | 2018-08-09 | Steering column with energy absorber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810903930.6A CN109178090B (en) | 2018-08-09 | 2018-08-09 | Steering column with energy absorber |
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| CN109178090A CN109178090A (en) | 2019-01-11 |
| CN109178090B true CN109178090B (en) | 2023-09-22 |
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| CN201810903930.6A Active CN109178090B (en) | 2018-08-09 | 2018-08-09 | Steering column with energy absorber |
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| CN204279597U (en) * | 2014-11-27 | 2015-04-22 | 长安大学 | A kind of automobile steering transmission device based on active safety |
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| CN204895553U (en) * | 2015-09-01 | 2015-12-23 | 三峡大学 | Crashproof energy -absorbing device of auto steering dish |
| CN204998596U (en) * | 2015-07-31 | 2016-01-27 | 安徽得力汽车部件有限公司 | Steering column with buffer function |
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|---|---|---|---|---|
| US5503431A (en) * | 1994-02-25 | 1996-04-02 | Fuji Kiko Co., Ltd. | Adjustable energy absorbing steering column with adjustment disabled during collision |
| JP2003267229A (en) * | 2002-03-19 | 2003-09-25 | Nissan Motor Co Ltd | Impact absorbing steering structure for automobile |
| JP2004231126A (en) * | 2003-01-31 | 2004-08-19 | Koyo Seiko Co Ltd | Steering device |
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| CN109178090A (en) | 2019-01-11 |
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Effective date of registration: 20230829 Address after: 310000 Tongxing Village, Xinjie Street, Xiaoshan District, Hangzhou City, Zhejiang Province Applicant after: Xiaolu intelligent transmission (Hangzhou) Co.,Ltd. Address before: Room 101, Building 2, Tianlun New Village, No. 284 Jiangping Road, Jingcheng Street, Jingjiang City, Taizhou City, Jiangsu Province, 214500 Applicant before: Huang Yingzhi |
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