CN213007718U - Seat lifting mechanism and system capable of reducing collision failure risk - Google Patents
Seat lifting mechanism and system capable of reducing collision failure risk Download PDFInfo
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- CN213007718U CN213007718U CN202020900288.9U CN202020900288U CN213007718U CN 213007718 U CN213007718 U CN 213007718U CN 202020900288 U CN202020900288 U CN 202020900288U CN 213007718 U CN213007718 U CN 213007718U
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Abstract
The utility model discloses a can reduce seat elevating system and system of collision inefficacy risk, including seatpad skeleton, seat mount pad, four connecting rods, actuating mechanism, adjustable attenuator can receive the electric signal control work at least two-stage damping state, the both ends of adjustable attenuator respectively with seatpad skeleton and seat mount pad rotatable coupling, and adjustable attenuator is located the left and right sides of seatpad skeleton respectively with the initiative connecting rod. The utility model discloses the damping state of attenuator with adjustable accessible power consumption signal control can guarantee the normal lift adjustment that realizes the seat of seat elevating system when the car does not collide to can guarantee seat elevating system's structural stability and alleviate the impact of passenger to the seat when the car collides, consequently, the utility model discloses can be used for solving the four-bar linkage seat elevating system who adopts single power supply, have the problem of inefficacy risk when the car bumps, help improving car seat's security.
Description
Technical Field
The utility model relates to a car seat, specific can reduce the seat elevating system of collision inefficacy risk that says so to and, use this mechanism.
Background
The automobile seat is used as an important automobile part of an automobile and plays a role in supporting and protecting passengers. Due to the difference of the heights of the passengers, the height of the seat needs to be adjusted when the passengers sit on the seat, so that the passengers can keep comfortable height to drive or sit on the automobile.
At present, the automobile seat lifting mechanism which is relatively common in the market is mainly a four-bar mechanism, and the main structure of the automobile seat lifting mechanism comprises four support structures which are connected between a seat slide rail and a seat cushion framework. The main working principle is that the four connecting rod supports can rotate through four mounting fixing points positioned on the seat cushion sliding rail to generate certain angle change, so that the seat cushion is pushed to generate displacement at high, wherein a power mechanism for pushing the four connecting rods to generate displacement is a manual or electric height adjusting mechanism, and the toothed plate is pushed to rotate through gear meshing of a height adjusting structure. The toothed plate is used as one of the four connecting rods, and the change of the height of the toothed plate drives the other three connecting rods to rotate, so that the four connecting rods can be subjected to angle change within a certain range.
In consideration of the economic cost and the operation convenience of the four-bar mechanism, the height adjusting mechanism with a single power source is generally adopted in the market at present, namely, one of the four-bar mechanisms rotates to drive the other three to rotate. Similarly, the height adjusting mechanism with a single power source simultaneously plays a role of a locking mechanism, namely, the locking and the fixing of the height of the automobile seat are realized by one locking keeping mechanism to drive the other three connecting rods to keep a certain angle and position.
The four-bar linkage configuration is convenient, but may negatively impact the overall performance of the seat frame under certain operating conditions. For example, during a car collision, a passenger may generate a large impact on a seat, and the energy of the impact is transmitted to a seat slide rail and a car chassis through a seat frame via a four-bar linkage, so that the following failure risks exist in the seat lifting mechanism during the car collision: firstly, only one rod of the four-bar linkage mechanism is kept at a locking position, and other three rods can deform under the energy of large impact, so that the seat framework is laterally deviated, and the protection effect of the seat on passengers is influenced; secondly, because impact energy can produce great impact to single locking mechanism for gear and pinion rack among the height adjusting mechanism produce great stress and meet an emergency, have increased the risk that the seat skeleton here takes place local tear or destruction, and the impact energy that the effectual absorption seat that can not balance received influences the wholeness ability of seat skeleton.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the utility model provides a can reduce seat elevating system and system of collision inefficacy risk for solve among the prior art and adopt the four-bar linkage structure seat elevating system of single power supply, there is the problem of inefficacy risk when the car bumps.
Solve above-mentioned technical problem, the utility model discloses the technical scheme who adopts as follows:
a seat lifting mechanism capable of reducing the risk of collision failure comprises a seat cushion framework, a seat mounting seat, four connecting rods and a driving mechanism; the four connecting rods are respectively arranged at four corners of the seat cushion framework, namely a left front position, a left rear position, a right front position and a right rear position, and the upper end part and the lower end part of each connecting rod are respectively and rotatably connected with the seat cushion framework and the seat mounting seat; one of the connecting rods is a driving connecting rod with a toothed plate structure, the other three connecting rods are driven connecting rods, the driving mechanism is provided with an output gear meshed with the driving connecting rod, the driving mechanism can drive the output gear to rotate so as to drive the driving connecting rod to rotate, and the three driven connecting rods are driven to rotate along with the driving connecting rod, so that the lifting adjustment of the seat is realized;
the driving mechanism may be a manual driving mechanism or an electric driving mechanism, and the electric driving mechanism is shown in the figure as an electric driving mechanism which uses a motor as a power source to drive the output gear to rotate.
The method is characterized in that:
the seat lifting mechanism further comprises an adjustable damper, the adjustable damper can be controlled by an electric signal to work in at least two stages of damping states, the damping states of all stages are in a sequence from low to high, the upper limit value of the damping force range corresponding to the previous stage of damping state is smaller than the lower limit value of the damping force range corresponding to the next stage of damping state, and the damping force range refers to the range of the damping force which can be generated between the two ends of the adjustable damper; the two ends of the adjustable damper are respectively and rotatably connected with the seat cushion framework and the seat mounting seat, and the rotating axes of the two ends of the adjustable damper are parallel to the upper rotating axis and the lower rotating axis of each connecting rod; and the adjustable damper and the driving connecting rod are respectively positioned at the left side and the right side of the seat cushion framework.
Therefore, when the automobile is not collided, the adjustable damper can be controlled to work in a lower damping state through the electric signal, so that the damping force of the adjustable damper is smaller, smaller resistance is generated to the rotation of the four connecting rods, and the lifting adjustment of the seat can be normally realized by the seat lifting mechanism. When the automobile is collided, the adjustable damper can be controlled to work in a higher damping state through the electric signal, so that the damping force of the adjustable damper is larger, on the one hand, the larger damping force can cooperate with the driving mechanism to respectively lock the positions of the connecting rods at the left side and the right side of the seat cushion framework, the structure stability of the seat lifting mechanism overshooting in automobile collision is guaranteed, the problem that in the prior art, only the driving mechanism locks the position of the driving connecting rod to cause the seat lifting mechanism to deform in the automobile collision is avoided, on the other hand, the adjustable damper with large damping force can relieve the impact of a passenger on the seat in an energy absorption mode, the situation that the output gear and the driving connecting rod which are meshed are torn or damaged due to large stress and strain generated in the automobile collision is avoided, and the safety of the seat in the automobile collision is effectively improved.
The adjustable damper can be controlled to work in the lowest-level damping state when the automobile is not collided, and the adjustable damper can be controlled to work in the higher-level damping state when the impact force of the automobile in collision is larger.
As a preferred embodiment of the present invention: the adjustable damper is provided with a damper box body, a damper piston piece and an electric control module; the damper box body is composed of a box body and a fixed rod, a piston rod through hole is formed in one end face of the box body, the inner end portion of the fixed rod is fixed to the other end face of the box body, and electrorheological fluid is filled in an inner cavity of the box body; the damper piston piece is composed of a piston rod and a piston plate, the inner end part of the piston rod is vertically fixed on the end surface of the piston plate, and the piston plate is provided with a plurality of liquid circulation holes which are uniformly arranged around the piston rod at intervals; the piston plate is in sliding fit with the inner cavity of the box body, the outer end part of the piston rod extends out of the piston rod through hole, the piston rod is coaxial with the fixed rod, and the outer end part of the piston rod and the outer end part of the fixed rod are two ends of the adjustable damper; the electric control module can be driven by the electric signal input from the control end of the electric control module to correspondingly adjust the damping coefficient of the electrorheological fluid so as to control the adjustable damper to work in a corresponding damping state.
Among them, preferred are: the piston rod and the fixed rod are square rods, so that the rigidity of the piston rod and the fixed rod is improved, and the deformation of the piston rod and the fixed rod in the working process is reduced.
As a preferred embodiment of the present invention: the seat cushion framework is provided with a left seat cushion side plate and a right seat cushion side plate, the front ends of the left seat cushion side plate and the right seat cushion side plate are used for connecting the half basin structure, and the rear ends of the left seat cushion side plate and the right seat cushion side plate are used for connecting the seat backrest framework; the seat mounting seat is a left slide rail assembly and a right slide rail assembly used for the front and back movement of the seat, the front ends and the back ends of the top surfaces of the left slide rail assembly and the right slide rail assembly are respectively fixed with a bracket, the lower end parts of the four connecting rods are respectively rotatably connected with the four brackets, the upper end parts of the two connecting rods positioned in front are respectively fixed on an anti-diving rod, the two ends of the anti-diving rod are respectively rotatably connected with the front end of the left seat cushion side plate and the front end of the right seat cushion side plate through bushings,
the upper ends of the two connecting rods positioned at the rear part are fixed on a rear lifting pipe, and the two ends of the rear lifting pipe are respectively rotatably connected with the rear end of the left seat cushion side plate and the rear end of the right seat cushion side plate through bushings, so that the upper end and the lower end of each connecting rod are respectively rotatably connected with the seat cushion framework and the seat mounting seat.
Preferably: the two ends of the adjustable damper are respectively and rotatably connected with the left seat cushion side plate and the upper sliding rail of the left sliding rail assembly in a riveting mode, or are respectively and rotatably connected with the right seat cushion side plate and the upper sliding rail of the right sliding rail assembly in a riveting mode.
As a preferred embodiment of the present invention: the driving connecting rod is positioned at the left rear position of the seat cushion framework, and the adjustable damper is arranged close to the driven connecting rod positioned at the right rear position of the seat cushion framework; or the driving connecting rod is positioned at the right rear position of the seat cushion framework, and the adjustable damper is arranged close to the driven connecting rod positioned at the left rear position of the seat cushion framework;
and the four connecting rods are all arranged in a backward tilting mode that the upper end parts are at the back and the lower end parts are at the front, and the adjustable damper is arranged in a forward tilting mode that the upper end parts are at the front and the lower end parts are at the back.
Therefore, the structural stability of the seat lifting mechanism in the collision of the automobile and the buffering and energy absorbing performance of the impact on the seat can be further improved.
Preferably: when the seat lifting mechanism is at the lowest point of the lifting stroke of the seat lifting mechanism, the included angle between each connecting rod and the vertical direction is 38 degrees, and the included angle between each adjustable damper and the vertical direction is 38 degrees; when the seat lifting mechanism is at the highest point of the lifting stroke of the seat lifting mechanism, the included angle between each connecting rod and the vertical direction is 77 degrees, and the included angle between the adjustable damper and the vertical direction is 3 degrees.
Through a large number of tests, the angle parameters can enable the structural stability of the seat lifting mechanism of the embodiment when the automobile collides and the buffering and energy absorbing performance of the seat impact to be optimal.
A seat lifting system capable of reducing the risk of collision failure comprises a seat lifting mechanism and a traveling computer (namely an ECU of an automobile); the method is characterized in that: the seat lifting mechanism is capable of reducing the risk of collision failure; the driving computer can acquire the vehicle acceleration of the automobile in real time, and is electrically connected with the control end of the adjustable damper so as to send an electric signal for controlling the damping state of the adjustable damper.
Therefore, the vehicle acceleration signal Acc of the automobile can be identified by the driving computer to judge whether the automobile collides and the impact force applied during the collision, and accordingly the adjustable damper is controlled to work in a corresponding damping state.
A seat lifting system capable of reducing the risk of collision failure comprises a seat lifting mechanism and a traveling computer (namely an ECU of an automobile); the method is characterized in that: the seat lifting mechanism is capable of reducing the risk of collision failure; the adjustable damper is provided with a low damping state, a middle damping state and a high damping state which are three damping states, the damping force ranges corresponding to the three damping states are 0< F <200N, 200N is less than or equal to F <5000N, 5000N is less than or equal to F <20000N in sequence, wherein F represents the damping force;
the driving computer can acquire the vehicle acceleration of the automobile in real time, and the driving computer is electrically connected with the control end of the adjustable damper, so that: when the vehicle acceleration Acc of the automobile meets the condition that Acc is less than 6g, the traveling computer can control the adjustable damper to work in the low damping state, when the vehicle acceleration Acc meets the condition that Acc is more than or equal to 6g and less than 10g, the traveling computer can control the adjustable damper to work in the medium damping state, when the vehicle acceleration Acc meets the condition that Acc is more than or equal to 10g, the traveling computer can control the adjustable damper to work in the high damping state, wherein g represents gravity acceleration.
Therefore, the structural stability of the seat lifting mechanism in the collision of the automobile and the buffering and energy absorbing performance of the impact on the seat can be further improved.
In addition, in practical use, when the automobile is not collided, the adjustable damper works in the low damping state, when the automobile is collided, the adjustable damper correspondingly works in the medium damping state or the high damping state, and after the automobile is collided, the adjustable damper is restored to the low damping state, so that the normal work of the seat lifting mechanism and the safe exit of passengers are facilitated.
Compared with the prior art, the utility model discloses following beneficial effect has:
first, the utility model discloses the attenuator with adjustable is equipped with, through the damping state of attenuator with adjustable power consumption signal control, can guarantee the normal lift adjustment that realizes the seat of seat elevating system when the car does not collide to can guarantee seat elevating system's structural stability and alleviate the impact of passenger to the seat when the car collides, consequently, the utility model discloses can be used for solving the four-bar linkage seat elevating system who adopts single power supply, there is the problem of inefficacy risk when the car collides, help improving automobile seat's security.
Second, the utility model discloses with the rear position of initiative connecting rod setting at the seat skeleton to adopt four connecting rods all to go up the tip back, tip hypsokinesis mode in the front down, tip forward is arranged to tip forward mode in the front, tip down before the adjustable damper, can further promote the structural stability of seat elevating system when the car bumps and to the buffering energy-absorbing performance that the seat impacted.
Drawings
The invention will be described in further detail with reference to the following drawings and specific embodiments:
fig. 1 is a schematic structural view of a seat lifting mechanism of the present invention;
FIG. 2 is a schematic diagram of the engagement between the driving connecting rod and the output gear of the present invention;
fig. 3 is a schematic diagram of the structure explosion of the middle adjustable damper of the present invention.
Detailed Description
The present invention will be described in detail with reference to the following embodiments and the accompanying drawings to help those skilled in the art to better understand the concept of the present invention, but the scope of the claims of the present invention is not limited to the following embodiments, and all other embodiments obtained without creative work for those skilled in the art will fall within the scope of the present invention without departing from the scope of the present invention.
Example one
As shown in fig. 1 and 2, the utility model discloses a seat lifting mechanism capable of reducing the risk of collision failure, which comprises a seat cushion framework, a seat mounting seat, four connecting rods 1 and a driving mechanism; the four connecting rods 1 are respectively arranged at four corners of the seat cushion framework, namely a left front position, a left rear position, a right front position and a right rear position, and the upper end part and the lower end part of each connecting rod 1 are respectively and rotatably connected with the seat cushion framework and the seat mounting seat; one of the connecting rods 1 is a driving connecting rod 1A with a toothed plate structure, the other three connecting rods 1 are driven connecting rods 1B, the driving mechanism is provided with an output gear 2 meshed with the driving connecting rod 1A, the driving mechanism can drive the output gear 2 to rotate so as to drive the driving connecting rod 1A to rotate and drive the three driven connecting rods 1B to rotate along with the driving connecting rod 1A, and therefore the lifting adjustment of the seat is achieved;
the driving mechanism may be a manual driving mechanism or an electric driving mechanism, and the electric driving mechanism is shown in the figure as an electric driving mechanism which uses a motor 3 as a power source to drive the output gear 2 to rotate.
The seat lifting mechanism further comprises an adjustable damper 4, the adjustable damper 4 can be controlled by an electric signal to work in at least two stages of damping states, the damping states of all stages are in a sequence from low to high, the upper limit value of the damping force range corresponding to the previous stage of damping state is smaller than the lower limit value of the damping force range corresponding to the next stage of damping state, and the damping force range refers to the range of the damping force which can be generated between the two ends of the adjustable damper 4; two ends of the adjustable damper 4 are respectively and rotatably connected with the seat cushion framework and the seat mounting seat, and the rotation axes of the two ends of the adjustable damper 4 are parallel to the rotation axis of the upper end and the rotation axis of the lower end of each connecting rod 1; and the adjustable damper 4 and the driving connecting rod 1A are respectively positioned at the left side and the right side of the seat cushion framework.
Therefore, when the automobile is not collided, the adjustable damper 4 can be controlled to work in a lower damping state through the electric signal, so that the damping force of the adjustable damper 4 is smaller, and smaller resistance is generated to the rotation of the four connecting rods 1, and the lifting adjustment of the seat can be normally realized by the seat lifting mechanism. When the automobile is in collision, the adjustable damper 4 can be controlled to work in a higher damping state through the electric signal, so that the damping force of the adjustable damper 4 is larger, on the one hand, the larger damping force can cooperate with the driving mechanism to respectively lock the position of each connecting rod 1 at the left side and the right side of the seat cushion framework, in order to guarantee the structural stability that seat elevating system overshoots in the car collision, avoid among the prior art only actuating mechanism to carry out the position locking to initiative connecting rod 1A and cause the problem that seat elevating system takes place to warp when the car collision, on the other hand, the impact of passenger to the seat can be alleviated through the mode of energy absorption to the great adjustable damper 4 of damping force, avoid the output gear 2 and the initiative connecting rod 1A of meshing to tear or destroy because of producing great stress and meeting an emergency and appearing in the car collision, the effectual security that improves the seat when the car collides.
In the case that the adjustable damper 4 has three or more damping states, the adjustable damper 4 may be controlled to operate in the lowest damping state when the vehicle is not in collision, and the adjustable damper 4 may be controlled to operate in the higher damping state when the impact force of the vehicle in collision is larger.
Example two
On the basis of the first embodiment, the second embodiment further adopts the following preferred structure:
as shown in fig. 3, the adjustable damper 4 is provided with a damper box 4-1, a damper piston 4-2 and an electronic control module; the damper box body 4-1 consists of a box body 4-1-1 and a fixed rod 4-1-2, wherein one end face of the box body 4-1-1 is provided with a piston rod through hole 4-1-1a, the inner end part of the fixed rod 4-1-2 is fixed at the other end face of the box body 4-1-1, and electrorheological fluid is filled in the inner cavity of the box body 4-1-1; the damper piston part 4-2 is composed of a piston rod 4-2-1 and a piston plate 4-2-2, the inner end part of the piston rod 4-2-1 is vertically fixed on the end surface of the piston plate 4-2-2, and the piston plate 4-2-2 is provided with a plurality of liquid circulating holes 4-2-2a which are uniformly arranged around the piston rod 4-2-1 at intervals; the piston plate 4-2-2 is in sliding fit with an inner cavity of the box body 4-1-1, the outer end part of the piston rod 4-2-1 extends out of the piston rod through hole 4-1-1a, the piston rod 4-2-1 is coaxial with the fixed rod 4-1-2, and the outer end part of the piston rod 4-2-1 and the outer end part of the fixed rod 4-1-2 are two ends of the adjustable damper 4; the electric control module can be driven by the electric signal input from the control end 4-3 of the electric control module to correspondingly adjust the damping coefficient of the electrorheological fluid so as to control the adjustable damper 4 to work in a corresponding damping state.
Among them, preferred are: the piston rod 4-2-1 and the fixing rod 4-1-2 are square rods, so that the rigidity of the piston rod and the fixing rod is improved, and the deformation of the piston rod and the fixing rod in the working process is reduced.
EXAMPLE III
On the basis of the first embodiment or the second embodiment, the third embodiment further adopts the following preferable structure:
the seat cushion framework is provided with a left seat cushion side plate 5Z and a right seat cushion side plate 5Y, the front ends of the left seat cushion side plate 5Z and the right seat cushion side plate 5Y are used for connecting the half-basin structure, and the rear ends are used for connecting the seat backrest framework; the seat mounting seat is a left slide rail assembly 6Z and a right slide rail assembly 6Y used for the front and back movement of the seat, the front ends and the rear ends of the top surfaces of the left slide rail assembly 6Z and the right slide rail assembly 6Y are respectively fixed with a bracket 7, the lower end parts of the four connecting rods 1 are respectively rotatably connected with the four brackets 7, the upper end parts of the two connecting rods 1 positioned in front are respectively fixed on a diving-proof rod 8, the two ends of the diving-proof rod 8 are respectively rotatably connected with the front end of the left seat cushion side plate 5Z and the front end of the right seat cushion side plate 5Y through bushings,
the upper ends of two connecting rods 1 positioned at the rear are fixed on a rear lifting pipe 9, and two ends of the rear lifting pipe 9 are respectively rotatably connected with the rear end of the left seat cushion side plate 5Z and the rear end of the right seat cushion side plate 5Y through bushings, so that the upper end and the lower end of each connecting rod 1 are respectively rotatably connected with the seat cushion framework and the seat mounting seat.
The above is the basic implementation of the third embodiment, and further optimization, improvement and limitation can be made on the basis of the basic implementation:
preferably: the two ends of the adjustable damper 4 are respectively and rotatably connected with the left seat cushion side plate 5Z and the upper sliding rail of the left sliding rail assembly 6Z in a riveting mode, or are respectively and rotatably connected with the right seat cushion side plate 5Y and the upper sliding rail of the right sliding rail assembly 6Y in a riveting mode.
Example four
On the basis of any one of the first to third embodiments, the fourth embodiment further adopts the following preferred structure:
the driving connecting rod 1A is positioned at the left rear position of the seat cushion framework, and the adjustable damper 4 is arranged close to the driven connecting rod 1B positioned at the right rear position of the seat cushion framework; or, the driving connecting rod 1A is located at the right rear position of the seat cushion frame, and the adjustable damper 4 is arranged close to the driven connecting rod 1B located at the left rear position of the seat cushion frame;
the four links 1 are arranged in a backward tilting manner with upper ends at the rear and lower ends at the front, and the adjustable damper 4 is arranged in a forward tilting manner with upper ends at the front and lower ends at the rear.
Therefore, the structural stability of the seat lifting mechanism in the collision of the automobile and the buffering and energy absorbing performance of the impact on the seat can be further improved.
The above is the basic implementation of the fourth embodiment, and further optimization, improvement and limitation can be made on the basis of the basic implementation:
preferably: when the seat lifting mechanism is at the lowest point of the lifting stroke of the seat lifting mechanism, the included angle between each connecting rod 1 and the vertical direction is 38 degrees, and the included angle between each adjustable damper 4 and the vertical direction is 38 degrees; when the seat lifting mechanism is at the highest point of the lifting stroke of the seat lifting mechanism, the included angle between each connecting rod 1 and the vertical direction is 77 degrees, and the included angle between each adjustable damper 4 and the vertical direction is 3 degrees.
Through a large number of tests, the angle parameters can enable the structural stability of the seat lifting mechanism of the embodiment when the automobile collides and the buffering and energy absorbing performance of the seat impact to be optimal.
EXAMPLE five
The fifth embodiment discloses a seat lifting system capable of reducing the risk of collision failure, which comprises a seat lifting mechanism and a traveling computer (namely an ECU of an automobile); the method is characterized in that: the seat lifting mechanism is the seat lifting mechanism capable of reducing the risk of collision failure in any one of the first embodiment to the fourth embodiment; the driving computer can acquire the vehicle acceleration of the automobile in real time, and is electrically connected with the control end of the adjustable damper 4 so as to send an electric signal for controlling the damping state of the adjustable damper 4.
Therefore, the vehicle acceleration signal Acc of the automobile can be identified by the traveling computer to judge whether the automobile collides and the impact force applied during the collision, and accordingly, the adjustable damper 4 is controlled to work in a corresponding damping state.
EXAMPLE six
The sixth embodiment discloses a seat lifting system capable of reducing the risk of collision failure, which comprises a seat lifting mechanism and a traveling computer (namely an ECU of an automobile); the method is characterized in that: the seat lifting mechanism is the seat lifting mechanism capable of reducing the risk of collision failure in the fourth embodiment; the adjustable damper 4 is provided with a low damping state, a medium damping state and a high damping state which are three damping states, the damping force ranges corresponding to the three damping states are 0< F <200N, 200N is less than or equal to F <5000N, 5000N is less than or equal to F <20000N in sequence, wherein F represents the damping force;
the driving computer can acquire the vehicle acceleration of the automobile in real time, and the driving computer is electrically connected with the control end of the adjustable damper 4, so that: when the vehicle acceleration Acc of the automobile meets the condition that Acc is less than 6g, the traveling crane computer can control the adjustable damper 4 to work in the low damping state, when the vehicle acceleration Acc meets the condition that Acc is more than or equal to 6g and less than 10g, the traveling crane computer can control the adjustable damper 4 to work in the medium damping state, when the vehicle acceleration Acc meets the condition that Acc is more than or equal to 10g, the traveling crane computer can control the adjustable damper 4 to work in the high damping state, wherein g represents the gravity acceleration.
Therefore, the structural stability of the seat lifting mechanism in the collision of the automobile and the buffering and energy absorbing performance of the impact on the seat can be further improved.
In addition, in practical use, when the automobile is not collided, the adjustable damper 4 works in the low damping state, when the automobile is collided, the adjustable damper 4 correspondingly works in the medium damping state or the high damping state, and after the automobile is collided, the adjustable damper 4 is restored to the low damping state, so that the normal work of the seat lifting mechanism and the safe exit of passengers are facilitated.
The present invention is not limited to the above-mentioned embodiments, and according to the above-mentioned contents, according to the common technical knowledge and conventional means in the field, without departing from the basic technical idea of the present invention, the present invention can also make other equivalent modifications, replacements or changes in various forms, all falling within the protection scope of the present invention.
Claims (8)
1. A seat lifting mechanism capable of reducing the risk of collision failure comprises a seat cushion framework, a seat mounting seat, four connecting rods (1) and a driving mechanism; the four connecting rods (1) are respectively arranged at four corners of the seat cushion framework, and the upper end part and the lower end part of each connecting rod (1) are respectively and rotatably connected with the seat cushion framework and the seat mounting seat; one of the connecting rods (1) is a driving connecting rod (1A) with a toothed plate structure, the other three connecting rods (1) are used as driven connecting rods (1B), the driving mechanism is provided with an output gear (2) meshed with the driving connecting rod (1A), and the driving mechanism can drive the output gear (2) to rotate;
the method is characterized in that:
the seat lifting mechanism further comprises an adjustable damper (4), the adjustable damper (4) can be controlled by an electric signal to work in at least two stages of damping states, and the upper limit value of the damping force range corresponding to the previous stage of damping state is smaller than the lower limit value of the damping force range corresponding to the next stage of damping state; the two ends of the adjustable damper (4) are respectively and rotatably connected with the seat cushion framework and the seat mounting seat, and the rotating axes of the two ends of the adjustable damper (4) are parallel to the rotating axis of the upper end and the rotating axis of the lower end of each connecting rod (1); and the adjustable damper (4) and the driving connecting rod (1A) are respectively positioned at the left side and the right side of the seat cushion framework.
2. The seat riser mechanism capable of reducing the risk of collision failure of claim 1, wherein: the adjustable damper (4) is provided with a damper box body (4-1), a damper piston piece (4-2) and an electric control module; the damper box body (4-1) is composed of a box body (4-1-1) and a fixed rod (4-1-2), a piston rod through hole (4-1-1a) is formed in one end face of the box body (4-1-1), the inner end portion of the fixed rod (4-1-2) is fixed to the other end face of the box body (4-1-1), and electrorheological fluid is filled in an inner cavity of the box body (4-1-1); the damper piston piece (4-2) is composed of a piston rod (4-2-1) and a piston plate (4-2-2), the inner end part of the piston rod (4-2-1) is vertically fixed on the end surface of the piston plate (4-2-2), and the piston plate (4-2-2) is provided with a plurality of liquid through holes (4-2-2a) which are uniformly arranged around the piston rod (4-2-1) at intervals; the piston plate (4-2-2) is in sliding fit with an inner cavity of the box body (4-1-1), the outer end part of the piston rod (4-2-1) extends out of the piston rod through hole (4-1-1a), the piston rod (4-2-1) is coaxial with the fixed rod (4-1-2), and the outer end part of the piston rod (4-2-1) and the outer end part of the fixed rod (4-1-2) are two ends of the adjustable damper (4); the electric control module can be driven by the electric signal input from the control end (4-3) of the electric control module to correspondingly adjust the damping coefficient of the electrorheological fluid so as to control the adjustable damper (4) to work in a corresponding damping state.
3. The seat riser mechanism capable of reducing the risk of collision failure of claim 1, wherein: the seat cushion framework is provided with a left seat cushion side plate (5Z) and a right seat cushion side plate (5Y), the seat mounting seat is a left slide rail assembly (6Z) and a right slide rail assembly (6Y) used for the front and back movement of the seat, the front ends and the rear ends of the top surfaces of the left slide rail assembly (6Z) and the right slide rail assembly (6Y) are respectively fixed with a bracket (7), the lower end parts of the four connecting rods (1) are respectively rotatably connected with the four brackets (7), the upper end parts of the two connecting rods (1) positioned in front are respectively fixed on an anti-diving rod (8), the two ends of the anti-diving rod (8) are respectively rotatably connected with the front end of the left seat cushion side plate (5Z) and the front end of the right seat cushion side plate (5Y) through bushings,
the upper ends of two connecting rods (1) positioned at the rear part are fixed on a rear lifting pipe (9), and two ends of the rear lifting pipe (9) are respectively rotatably connected with the rear end of the left seat cushion side plate (5Z) and the rear end of the right seat cushion side plate (5Y) through bushings.
4. The seat riser mechanism capable of reducing the risk of collision failure of claim 3, wherein: the two ends of the adjustable damper (4) are respectively in rotatable connection with the left seat cushion side plate (5Z) and the upper sliding rail of the left sliding rail assembly (6Z) in a riveting mode, or are respectively in rotatable connection with the right seat cushion side plate (5Y) and the upper sliding rail of the right sliding rail assembly (6Y) in a riveting mode.
5. The seat riser mechanism capable of reducing the risk of collision failure according to any one of claims 1 to 4, wherein: the driving connecting rod (1A) is located at the left rear position of the seat cushion framework, and the adjustable damper (4) is arranged close to the driven connecting rod (1B) located at the right rear position of the seat cushion framework; or the driving connecting rod (1A) is positioned at the right rear position of the seat cushion framework, and the adjustable damper (4) is arranged close to the driven connecting rod (1B) positioned at the left rear position of the seat cushion framework;
and the four connecting rods (1) are all arranged in a backward tilting mode that the upper end parts are at the back and the lower end parts are at the front, and the adjustable damper (4) is arranged in a forward tilting mode that the upper end parts are at the front and the lower end parts are at the back.
6. The seat riser mechanism capable of reducing the risk of collision failure of claim 5, wherein: when the seat lifting mechanism is at the lowest point of the lifting stroke of the seat lifting mechanism, the included angle between each connecting rod (1) and the vertical direction is 38 degrees, and the included angle between each adjustable damper (4) and the vertical direction is 38 degrees; when the seat lifting mechanism is at the highest point of the lifting stroke of the seat lifting mechanism, the included angle between each connecting rod (1) and the vertical direction is 77 degrees, and the included angle between each adjustable damper (4) and the vertical direction is 3 degrees.
7. A seat lifting system capable of reducing the risk of collision failure comprises a seat lifting mechanism and a traveling computer; the method is characterized in that: the seat lifting mechanism is the seat lifting mechanism capable of reducing the risk of collision failure according to any one of claims 1 to 6; the driving computer can acquire the vehicle acceleration of the automobile in real time, and is electrically connected with the control end of the adjustable damper (4) so as to send an electric signal for controlling the damping state of the adjustable damper (4).
8. A seat lifting system capable of reducing the risk of collision failure comprises a seat lifting mechanism and a traveling computer; the method is characterized in that: the seat lifting mechanism is the seat lifting mechanism capable of reducing the risk of collision failure as claimed in claim 6; the adjustable damper (4) is provided with a low damping state, a middle damping state and a high damping state which are three damping states, the damping force ranges corresponding to the three damping states are 0< F <200N, 200N-F <5000N and 5000N-F <20000N in sequence, wherein F represents the damping force;
the driving computer can acquire the vehicle acceleration of the automobile in real time, and is electrically connected with the control end of the adjustable damper (4) so as to: when the vehicle acceleration Acc of the automobile meets the condition that Acc is less than 6g, the traveling computer can control the adjustable damper (4) to work in the low damping state, when the vehicle acceleration Acc meets the condition that Acc is not less than 6g and is less than 10g, the traveling computer can control the adjustable damper (4) to work in the medium damping state, and when the vehicle acceleration Acc meets the condition that Acc is not less than 10g, the traveling computer can control the adjustable damper (4) to work in the high damping state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020900288.9U CN213007718U (en) | 2020-05-26 | 2020-05-26 | Seat lifting mechanism and system capable of reducing collision failure risk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020900288.9U CN213007718U (en) | 2020-05-26 | 2020-05-26 | Seat lifting mechanism and system capable of reducing collision failure risk |
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| Publication Number | Publication Date |
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| CN213007718U true CN213007718U (en) | 2021-04-20 |
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| CN202020900288.9U Active CN213007718U (en) | 2020-05-26 | 2020-05-26 | Seat lifting mechanism and system capable of reducing collision failure risk |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113696802A (en) * | 2021-10-01 | 2021-11-26 | 厦门工学院 | Automobile seat and emergency extension protection method |
| CN114261319A (en) * | 2021-12-16 | 2022-04-01 | 东风汽车集团股份有限公司 | Adjusting structure and adjusting method suitable for R points of vehicle bodies of different vehicle types |
| CN115009127A (en) * | 2022-04-29 | 2022-09-06 | 重庆长安汽车股份有限公司 | Zero-gravity seat front collision restraint system and vehicle |
| WO2023178891A1 (en) | 2022-03-21 | 2023-09-28 | 延锋国际汽车技术有限公司 | Zero-gravity seat capable of quickly returning after collision |
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2020
- 2020-05-26 CN CN202020900288.9U patent/CN213007718U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113696802A (en) * | 2021-10-01 | 2021-11-26 | 厦门工学院 | Automobile seat and emergency extension protection method |
| CN113696802B (en) * | 2021-10-01 | 2023-04-21 | 厦门工学院 | Automobile seat and emergency extension protection method |
| CN114261319A (en) * | 2021-12-16 | 2022-04-01 | 东风汽车集团股份有限公司 | Adjusting structure and adjusting method suitable for R points of vehicle bodies of different vehicle types |
| WO2023178891A1 (en) | 2022-03-21 | 2023-09-28 | 延锋国际汽车技术有限公司 | Zero-gravity seat capable of quickly returning after collision |
| CN115009127A (en) * | 2022-04-29 | 2022-09-06 | 重庆长安汽车股份有限公司 | Zero-gravity seat front collision restraint system and vehicle |
| CN115009127B (en) * | 2022-04-29 | 2024-05-07 | 重庆长安汽车股份有限公司 | Front collision restraint system of zero gravity seat and vehicle |
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