CN112172630B - Automobile seat cam adjusting type damping device and damping method and height adjusting method thereof - Google Patents
Automobile seat cam adjusting type damping device and damping method and height adjusting method thereof Download PDFInfo
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- CN112172630B CN112172630B CN202011151105.9A CN202011151105A CN112172630B CN 112172630 B CN112172630 B CN 112172630B CN 202011151105 A CN202011151105 A CN 202011151105A CN 112172630 B CN112172630 B CN 112172630B
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- tongue pressing
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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
- B60N2/50—Seat suspension devices
- B60N2/506—Seat guided by rods
- B60N2/508—Scissors-like structure
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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
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
- B60N2/1605—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the cinematic
- B60N2/161—Rods
- B60N2/162—Scissors-like structure
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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
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
- B60N2/1635—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the drive mechanism
- B60N2/1665—Hydraulic or pneumatic actuation
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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
- B60N2/50—Seat suspension devices
- B60N2/52—Seat suspension devices using fluid means
- B60N2/522—Seat suspension devices using fluid means characterised by dampening means
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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
- B60N2/50—Seat suspension devices
- B60N2/52—Seat suspension devices using fluid means
- B60N2/525—Seat suspension devices using fluid means using gas
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
Abstract
The invention relates to an automobile seat cam adjusting type damping device, a damping method and a height adjusting method thereof, and provides a technical scheme for solving the problems that the automobile seat damping device in the prior art is complex in structure and cannot be adjusted in height: a cam adjusting type shock absorption device for an automobile seat comprises an upper frame, a lower frame, an outer shear shank, an inner shear shank, an air bag, a damper and a control mechanism; the outer shear shank is rotatably connected with the inner shear shank, and two ends of the outer shear shank are respectively connected with the upper frame and the lower frame; two ends of the inner scissor frame are respectively connected with the upper frame and the lower frame; the air bag is connected with the lower frame and the inner scissor frame; the damper is connected with the outer scissor frame and the inner scissor frame; the control mechanism comprises a valve body, a pressure tongue, a cam, a pull rope, a spring and a pressure tongue shaft; the valve body and the tongue pressing shaft are both fixed on the inner scissor frame; the tongue depressor is rotationally connected to the tongue depressor shaft. The invention has good damping effect and can adjust the height.
Description
Technical Field
The invention relates to an automobile seat cam adjusting type damping device, a damping method and a height adjusting method thereof, which are mainly used for damping and height adjusting of driving seats in commercial vehicles and trucks.
Background
A car seat is an important component of a car that is directly associated with the occupant. The comfort level of the automobile seat is a relatively critical factor in the design process of the automobile seat. The existing automobile seats are generally provided with a damping device so as to relieve the discomfort brought to drivers and passengers by bumping and shaking in the driving process of automobiles. The conventional damping device for the automobile seat generally comprises an upper frame, a lower frame and a damping structure arranged between the upper frame and the lower frame, and if the damping device for the automobile seat is disclosed in Chinese patent with publication number of 20150624 and publication number of CN204415199U, the damping device for the automobile seat is relatively complex in structure, and is damped by a damping spring, and the damping and energy-absorbing effects are general.
In addition, the existing automobile seat damping device has the following defects: 1. the cam and valve in the damping device are easily disengaged, resulting in adjustment failure; 2. the existing damping device generally does not have a height adjusting function, has single working height, cannot meet the requirement of height individuation and has poor comfort; 3. the few damping devices with the height adjusting function have complex structures and high cost, and the installed valve bodies are specially made; 4. some damping devices have air bags which are manually inflated and deflated directly through a switch, the inflation and deflation amount is not easy to control, and the use effect is poor.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides the cam adjusting type damping device for the automobile seat, the damping method and the height adjusting method thereof, which have the advantages of reasonable structural design and good damping effect and can be used for height adjustment.
The technical scheme adopted by the invention for solving the problems is as follows: the cam adjusting type shock absorption device for the automobile seat comprises an upper frame, a lower frame, an outer shear shank, an inner shear shank, an air bag, a damper and a control mechanism; the outer shear shank is rotatably connected with the inner shear shank, and two ends of the outer shear shank are respectively connected with the upper frame and the lower frame; two ends of the inner scissor frame are respectively connected with the upper frame and the lower frame; the air bag is connected with the lower frame and the inner scissor frame; the damper is connected with the outer scissor frame and the inner scissor frame; the control mechanism comprises a valve body, a pressure tongue, a cam, a pull rope, a spring and a pressure tongue shaft; the valve body and the tongue pressing shaft are both fixed on the inner scissor frame; the tongue pressing shaft is rotatably connected with the tongue pressing shaft; the outer scissor frame is provided with a rotating shaft; the cam is rotationally connected to the rotating shaft; one end of the spring is arranged on the rotating shaft, and the other end of the spring is clamped on the cam; the pull cable is mounted on the outer scissor frame; a cable is arranged in the inhaul cable; one end of the cable is fixed on the inhaul cable, and the other end of the cable is fixed on the cam; the pressure tongue is positioned between the valve body and the cam, and two surfaces of the pressure tongue are respectively matched with the valve body and the cam.
Preferably, an exhaust switch and an air inlet switch are arranged on the valve body; an exhaust workbench and an air inlet workbench are respectively arranged at two ends of the cam; the tongue pressing device is characterized in that a tongue pressing groove I, a tongue pressing groove II, a tongue pressing boss I and a tongue pressing boss II are designed on the tongue pressing; the exhaust switch is matched with the second tongue pressing groove; the tongue pressing boss II is matched with the exhaust workbench; the air inlet switch is matched with the tongue pressing groove I; and the tongue pressing boss I is matched with the air inlet workbench.
Preferably, the valve body is further provided with an air bag interface for connecting the air bag to inflate, an air inlet interface for connecting an external air source and an exhaust interface for connecting the air bag to deflate; an exhaust switch and an air inlet switch in the valve body are used for controlling the air charging and discharging of the air bag.
Preferably, the spatula is of a flat bent structure, one surface of the spatula is provided with a spatula groove I and a spatula groove II, and the other surface of the spatula is provided with a spatula boss I and a spatula boss II.
Preferably, the pressure tongue is also provided with a first pressure tongue plane for preventing the exhaust workbench from mistakenly touching the first pressure tongue boss and a second pressure tongue plane for preventing the air inlet workbench from mistakenly touching the second pressure tongue boss; the first tongue pressing plane and the second tongue pressing plane are arranged in an opposite angle, the first tongue pressing plane is connected with the first tongue pressing boss, and the second tongue pressing plane is connected with the second tongue pressing boss.
Preferably, the cam is sector-shaped; the exhaust workbench and the air inlet workbench are positioned at two ends of the fan-shaped cambered surface.
Preferably, the cam is further provided with a cable groove; one end of a cable of the inhaul cable is fixed on the inhaul cable groove.
Preferably, the pull cable is further connected with a handle for pulling the pull cable.
Preferably, one end of the outer shear frame is rotatably connected to the upper frame, and the other end of the outer shear frame is slidably connected to the lower frame; one end of the inner scissor rack is rotatably connected to the lower frame, and the other end of the inner scissor rack is slidably connected to the upper frame.
Preferably, a support is further arranged on the outer shear shank; the inhaul cable is installed on the support.
The damping method of the cam-regulated damping device for the automobile seat comprises the following steps of:
the method comprises the following steps: after the automobile seat is adjusted to a preset position by inflating and deflating the air bag, the automobile starts to get on the road, the automobile seat can vibrate due to uneven road surface, the air bag and the damper play a role in buffering and energy absorption together, and the height of the seat is stabilized by continuously inflating and deflating the air bag in the driving process of the automobile;
step two: when the automobile seat vibrates downwards, the upper frame descends, an included angle between the outer shear shank and the inner shear shank in the horizontal direction becomes small, the pressure tongue moves downwards relative to the cam, the air inlet workbench is made to contact the first pressure tongue boss, the pressure tongue groove is made to press downwards towards the direction of the air inlet switch, the air inlet switch is opened, and the air bag starts to inflate; the air bag is inflated to enhance the upward elasticity of the air bag on the automobile seat, so that the vibration is buffered, the automobile seat rises until the air inlet workbench is separated from the tongue pressing boss, the air inlet switch is released by the tongue pressing groove, the air inlet switch is closed, and the air bag stops inflating;
step three: when the automobile seat vibrates upwards, the upper frame rises, the included angle between the outer scissor frame and the inner scissor frame in the horizontal direction is increased, the pressure tongue moves upwards relative to the cam position, the exhaust workbench is made to contact the second pressure tongue boss, the second pressure tongue groove is made to press downwards towards the exhaust switch, the exhaust switch is opened, and the air bag starts to deflate; the air bag is deflated to weaken the upward elastic force of the air bag on the automobile seat, so that the vibration is buffered, the automobile seat descends until the exhaust workbench is separated from the second tongue pressing boss, the second tongue pressing groove loosens the exhaust switch, the exhaust switch is closed, and the air bag stops deflating.
The height adjusting method of the automobile seat cam adjusting type damping device comprises a working height raising step and a working height reducing step;
the working height raising step comprises:
the method comprises the following steps: the handle is pulled upwards for a certain distance to reach the position of the handle corresponding to the preset position, so that the cable wire of the inhaul cable pulls the cam to rotate anticlockwise, the air inlet workbench contacts the first pressure tongue boss, the pressure tongue groove is pressed downwards towards the air inlet switch, the air inlet switch is opened, and the air bag starts to inflate;
step two: after the air bag is inflated to a preset position, the upper frame rises, so that the pressure tongue moves upwards relative to the cam position, the air inlet workbench is separated from the pressure tongue boss, the air inlet switch is also released from the pressure tongue groove, the air inlet switch is closed, and the air bag stops inflating;
the working height reducing step includes:
the method comprises the following steps: the handle is loosened downwards by a certain distance to a handle position corresponding to the preset position, the cam rotates clockwise under the action of the spring, the exhaust workbench contacts the second tongue pressing boss, the second tongue pressing groove is pressed downwards towards the exhaust switch, the exhaust switch is opened, and the air bag begins to deflate;
step two: after the air bag is deflated to the preset position, the upper frame descends to cause the position of the pressure tongue to move downwards relative to the cam, the exhaust workbench is separated from the second pressure tongue boss, the exhaust switch is released from the second pressure tongue groove, the exhaust switch is closed, and the air bag stops deflating.
The cambered surface between the exhaust workbench and the air inlet workbench is an idle stroke cambered surface, the corresponding arc angle of the idle stroke cambered surface on the cam fan is slightly larger than the corresponding arc angle of the pressure tongue on the cam fan, and the difference of the two arc angles is within the range of 3-5 degrees.
Compared with the prior art, the invention has the following advantages and effects:
1. the invention has low cost, simple structure and reliability; the seat height adjustment is carried out on the air bag by inflating and deflating through the inhaul cable, the cam, the pressure tongue and the valve body, the adjustment accuracy is high, the working height is flexible and controllable, and the seat height adjustment can be carried out according to the requirements of users.
2. The height of the seat is adjusted by pulling the cam through the inhaul cable instead of directly inflating and deflating the air bag, so that the height of the seat can be more accurately controlled, and the excessive inflation or deflation amount of the air bag is prevented.
3. The height adjusting range of the seat corresponds to the angle adjusting range of the cam, the angle adjustment of the cam is controlled by the stay cable, and the stay cable is limited in length, so that the cam can be prevented from being disengaged in the using process, the whole process of the cam is controllable, and the adjustment failure is avoided.
4. The damping device can automatically inflate and deflate the air bag in the running process of the automobile, so that the height of the automobile seat is kept stable, and compared with the mode that the air bag is elastically buffered by the air bag, the damping device has a better anti-seismic effect.
5. The invention sets the air inlet and outlet stroke of 3-5 degrees, so that the valve body and the air bag do not act to reduce the fatigue damage of parts for the slight vibration which is not easy to be felt by human body.
Drawings
Fig. 1 is a schematic perspective view of a cam-adjustable shock absorbing device for a vehicle seat according to an embodiment of the present invention.
Fig. 2 is a schematic top view of a cam adjustable shock absorber for a vehicle seat according to an embodiment of the present invention.
Fig. 3 is a schematic sectional view of the structure in the direction a in fig. 2.
Fig. 4 is a front view structural schematic diagram of the valve body, the pressure tongue and the cam in the embodiment of the invention when being matched.
Fig. 5 is a schematic perspective view of the valve body, the pressure tongue and the cam in the embodiment of the invention when the valve body, the pressure tongue and the cam are matched.
Fig. 6 is an enlarged view of a portion B of fig. 5.
Fig. 7 is a front view structural schematic diagram of a valve body in the embodiment of the invention.
Fig. 8 is a schematic top view of the valve body in the embodiment of the present invention.
Fig. 9 is a schematic perspective view of a valve body in an embodiment of the present invention.
Fig. 10 is a front view of the tongue depressor in the embodiment of the invention.
Fig. 11 is a right-side view structural schematic diagram of the tongue depressor in the embodiment of the invention.
Fig. 12 is a schematic perspective view of a spatula in an embodiment of the invention.
Fig. 13 is a perspective view of a cam in an embodiment of the present invention.
In the figure: the scissors device comprises an upper frame 1, a lower frame 2, an outer scissors frame 3, an inner scissors frame 4, an air bag 5, a damper 6, a control mechanism 7, a handle 8, a valve body 71, a tongue 72, a cam 73, a pull cable 74, a spring 75, a tongue pressing shaft 76, an exhaust switch 711, an air inlet switch 712, an air bag interface 713, an air inlet interface 714, an exhaust interface 715, a tongue pressing groove I721, a tongue pressing groove II 722, a tongue pressing boss 723, a tongue pressing boss II 724, a tongue pressing plane I725, a tongue pressing plane II 726, an exhaust workbench 731, an air inlet workbench 732, a pull cable groove 733 and a cable 741.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Examples are given.
Referring to fig. 1 to 13, the cam adjusting type shock absorbing device for the car seat in the present embodiment includes an upper frame 1, a lower frame 2, an outer scissor frame 3, an inner scissor frame 4, an air bag 5, a damper 6, and a control mechanism 7; the outer shear shank 3 is rotatably connected with the inner shear shank 4, and two ends of the outer shear shank 3 are respectively connected with the upper frame 1 and the lower frame 2; two ends of the inner scissor frame 4 are respectively connected with the upper frame 1 and the lower frame 2; the air bag 5 is connected with the lower frame 2 and the inner scissor frame 4; damper 6 is connected to outer scissor frame 3 and inner scissor frame 4. One end of the outer scissor frame 3 is rotatably connected to the upper frame 1, and the other end is slidably connected to the lower frame 2; one end of the inner scissor frame 4 is rotatably connected on the lower frame 2, and the other end is connected on the upper frame 1 in a sliding way. As shown in fig. 1-3, the upper frame 1 and the lower frame 2 are both provided with sliding rails for the sliding of the outer scissor frame 3 and the inner scissor frame 4, so that the upper frame 1 can be always kept stable in the telescopic process of the scissor frame consisting of the outer scissor frame 3 and the inner scissor frame 4, and the lifting process is smooth, is not blocked and is not deformed; the damper 6 and the air bag 5 have the functions of buffering and absorbing energy and can resist the vibration of the automobile in the running process.
The control mechanism 7 in the present embodiment includes a valve body 71, a tongue 72, a cam 73, a cable 74, a spring 75, and a tongue-depressing shaft 76; valve body 71 and spring bolt shaft 76 are both fixed on inner scissor frame 4; the pressure tongue 72 is rotationally connected to a pressure tongue shaft 76; the outer scissor frame 3 is provided with a rotating shaft 31; the cam 73 is rotatably connected to the rotating shaft 31; one end of the spring 75 is mounted on the rotating shaft 31, and the other end is clamped on the cam 73; the outer scissor frame 3 is also provided with a bracket 32; the cable 74 is mounted on the bracket 32; a thread 741 is arranged in the inhaul cable 74; one end of the cable 741 is fixed to the cable 74, and the other end is fixed to the cam 73; the pressure tongue 72 is located between the valve body 71 and the cam 73, and both sides of the pressure tongue 72 are respectively engaged with the valve body 71 and the cam 73. As shown in fig. 4 to 6, the valve body 71, the depressing tongue 72, the cam 73, the cable 74 and the spring 75 cooperate to achieve the height adjusting function of the car seat.
The valve body 71 in this embodiment is provided with an exhaust switch 711 and an intake switch 712; an exhaust workbench 731 and an intake workbench 732 are respectively arranged at two ends of the cam 73; the tongue 72 is provided with a tongue pressing groove I721, a tongue pressing groove II 722, a tongue pressing boss I723 and a tongue pressing boss II 724; the exhaust switch 711 is matched with the second tongue pressing groove 722; the second tongue pressing boss 724 is matched with the exhaust workbench 731; the air inlet switch 712 is matched with the first tongue depressing groove 721; tongue depressing boss 723 cooperates with air intake table 732. The automatic shock absorption function of the automobile seat is realized by controlling the inflation and deflation of the air bags through the cooperation of the exhaust workbench 731 and the air inlet workbench 732 of the cam 73, the first tongue pressing boss 723 and the second tongue pressing boss 724 as well as the first tongue pressing groove 721 and the second tongue pressing groove 722 on the tongue pressing 72, the exhaust switch 711 and the air inlet switch 712 of the valve body 71, namely, the device can automatically keep the height of the seat stable when the automobile seat runs on a road surface.
The valve body 71 in this embodiment is further provided with an air bag interface 713 for connecting the air bag 5 for inflation, an air inlet interface 714 for connecting an external air source, and an air outlet interface 715 for connecting the air bag 5 for deflation; an exhaust switch 711 and an intake switch 712 in the valve body 71 are used to control the inflation and deflation of the air bag 5. As shown in fig. 7 to 9, the valve body 71 is a square valve, and the valve body 71 may be a special valve for a shock absorber.
The spatula 72 in the embodiment is of a flat bending structure, one side of the spatula 72 is provided with a spatula groove I721 and a spatula groove II 722, and the other side is provided with a spatula boss I723 and a spatula boss II 724; the tongue 72 is also provided with a first tongue pressing plane 725 for preventing the exhaust workbench 731 from mistakenly touching the first tongue pressing boss 723 and a second tongue pressing plane 726 for preventing the air inlet workbench 732 from mistakenly touching the second tongue pressing boss 724; the first tongue pressing plane 725 and the second tongue pressing plane 726 are arranged in a diagonal mode, the first tongue pressing plane 725 is connected with the first tongue pressing boss 723, and the second tongue pressing plane 726 is connected with the second tongue pressing boss 724. As shown in fig. 10-12, the shape of the two sides of the pressure tongue 72 matches the valve body 71 and the cam 73, respectively.
The cam 73 in this embodiment is sector-shaped; the exhaust workbench 731 and the intake workbench 732 are positioned at two ends of the fan-shaped cambered surface; the cam 73 is also provided with a guy cable groove 733; one end of a cable 741 of the cable 74 is fixed on the cable groove 733; a handle 8 for pulling the cable 74 is also connected to the cable 74. As shown in fig. 13, the arc surface between the exhaust workbench 731 and the air intake workbench 732 is an idle stroke arc surface, that is, when the tongue 72 is located in the corresponding range of the idle stroke arc surface, it does not contact the exhaust workbench 731 and the air intake workbench 732, the air bag 5 does not inflate or deflate, the arc angle of the idle stroke arc surface corresponding to the cam sector is slightly larger than the arc angle of the tongue 72 corresponding to the cam sector, the difference between the two arc angles is in the range of 3 ° to 5 °, so that the tongue 72 can move slightly when located in the idle stroke arc surface range, the slight movement is generally caused by slight vibration which is not easy to be perceived by human body, and therefore, the vibration is not required to be buffered by inflating or deflating the air bag, so that the fatigue of parts caused by frequent inflation and deflation can be avoided, and the service life of the product is prolonged.
The damping method of the cam adjusting type damping device for the automobile seat in the embodiment comprises the following steps of:
the method comprises the following steps: the air bag 5 and the damper 6 play a role of buffering and energy absorption together, and the height of the seat is stabilized by continuously inflating and deflating the air bag in the driving process of the automobile;
step two: when the automobile seat vibrates downwards, the upper frame 1 descends, the horizontal included angle between the outer scissor frame 3 and the inner scissor frame 4 becomes smaller, the pressure tongue 72 moves downwards relative to the cam 73, so that the air inlet workbench 732 contacts the first pressure tongue boss 723, the first pressure tongue groove 721 is pressed downwards towards the air inlet switch 712, the air inlet switch 712 is opened, and the air bag 5 starts to be inflated; the air bag 5 is inflated to enable the upward elastic force of the air bag 5 on the automobile seat to be enhanced, so that vibration is buffered, the automobile seat rises until the air inlet workbench 732 is separated from the first tongue pressing boss 723, the first tongue pressing groove 721 loosens the air inlet switch 712, the air inlet switch 712 is closed, and the air bag 5 stops inflating;
step three: when the automobile seat vibrates upwards, the upper frame 1 rises, the included angle between the outer scissor frame 3 and the inner scissor frame 4 in the horizontal direction is increased, the tongue pressing 72 moves upwards relative to the cam 73, so that the exhaust workbench 731 contacts the second tongue pressing boss 724, the second tongue pressing groove 722 is pressed downwards towards the exhaust switch 711, the exhaust switch 711 is opened, and the air bag 5 begins to deflate; the air bag 5 is deflated, so that the upward elastic force of the air bag 5 on the automobile seat is weakened, the vibration is buffered, the automobile seat descends until the exhaust workbench 731 is separated from the second tongue pressing boss 724, the second tongue pressing groove 722 releases the exhaust switch 711, the exhaust switch 711 is closed, and the air bag 5 stops deflating.
The height adjustment method of the cam-adjustable shock-absorbing device for the vehicle seat in the present embodiment includes a working height raising step and a working height lowering step.
The working height raising step in this embodiment includes:
the method comprises the following steps: the handle 8 is pulled upwards for a certain distance to reach a handle position corresponding to a preset position, so that the cable 741 of the inhaul cable 74 pulls the cam 73 to rotate anticlockwise, at the moment, the air inlet workbench 732 contacts the first tongue pressing boss 723, the first tongue pressing groove 721 is pressed downwards towards the air inlet switch 712, the air inlet switch 712 is opened, and the air bag 5 starts to inflate;
step two: after the air bag 5 is inflated to a preset position, the upper frame 1 is lifted, so that the pressure tongue 72 moves upwards relative to the cam 73, the air inlet workbench 732 is separated from the first pressure tongue boss 723, the first pressure tongue groove 721 also releases the air inlet switch 712, the air inlet switch 712 is closed, and the air bag 5 stops being inflated.
The working height reducing step in this embodiment includes:
the method comprises the following steps: the handle 8 is loosened downwards by a certain distance to a handle position corresponding to a preset position, the cam 73 rotates clockwise under the action of the spring 75, the exhaust workbench 731 contacts the second tongue pressing boss 724, the second tongue pressing groove 722 is pressed downwards towards the exhaust switch 711, the exhaust switch 711 is opened, and the air bag 5 starts to deflate;
step two: after the air bag 5 is deflated to a preset position, the upper frame 1 descends to cause the position of the tongue 72 to move downwards relative to the cam 73, the exhaust workbench 731 is separated from the second tongue pressing boss 724, the second tongue pressing groove 722 releases the exhaust switch 711, the exhaust switch 711 is closed, and the air bag 5 stops deflating.
The predetermined position in this embodiment is a body-sensing appropriate position set by the user according to the self condition, and the position corresponds to a certain pulling length of the cable. In the embodiment, the height is adjusted by pulling the cam 73 through the inhaul cable 74 instead of directly inflating and deflating the air bag 5, the pulling length of the line cable 741 in the inhaul cable 74 corresponds to the adjusting angle of the cam 73, and the adjusting angle of the cam 73 corresponds to the working height of the automobile seat, so that the height of the automobile seat can be accurately controlled by the pulling length of the inhaul cable 74 when a user adjusts the height, and the height adjusting device is more convenient and accurate compared with the method of directly inflating and deflating and then performing visual inspection or somatosensory test; when the total length of the inhaul cable 74 is set, the fan-shaped angle range of the cam 73 needs to be considered, so that the cam 73 can be prevented from being disengaged in the using process, the whole process of the cam 73 can be controlled, and the adjustment failure can be avoided.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an illustration of the structure of the present invention. Equivalent or simple changes in the structure, characteristics and principles of the invention are included in the protection scope of the patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (7)
1. A cam adjusting type shock absorption device for an automobile seat comprises an upper frame (1), a lower frame (2), an outer shear shank (3), an inner shear shank (4), an air bag (5) and a damper (6); the outer shear shank (3) is rotatably connected with the inner shear shank (4), and two ends of the outer shear shank (3) are respectively connected with the upper frame (1) and the lower frame (2); two ends of the inner scissor frame (4) are respectively connected with the upper frame (1) and the lower frame (2); the air bag (5) is connected with the lower frame (2) and the inner scissor frame (4); the damper (6) is connected with the outer scissor frame (3) and the inner scissor frame (4); the device is characterized by further comprising a control mechanism (7), wherein the control mechanism (7) comprises a valve body (71), a pressure tongue (72), a cam (73), a pull cable (74), a spring (75) and a pressure tongue shaft (76); the valve body (71) and the spring bolt pressing shaft (76) are both fixed on the inner shear shank (4); the pressure tongue (72) is rotationally connected to a pressure tongue shaft (76); a rotating shaft (31) is arranged on the outer scissor frame (3); the cam (73) is rotationally connected to the rotating shaft (31); one end of the spring (75) is arranged on the rotating shaft (31), and the other end of the spring is clamped on the cam (73); the stay cable (74) is arranged on the outer shear shank (3); a thread (741) is arranged in the inhaul cable (74); one end of the cable (741) is fixed on the inhaul cable (74), and the other end of the cable is fixed on the cam (73); the pressure tongue (72) is positioned between the valve body (71) and the cam (73), and two surfaces of the pressure tongue (72) are respectively matched with the valve body (71) and the cam (73);
an exhaust switch (711) and an air inlet switch (712) are arranged on the valve body (71); an exhaust workbench (731) and an air inlet workbench (732) are respectively arranged at two ends of the cam (73); the tongue pressing (72) is provided with a first tongue pressing groove (721), a second tongue pressing groove (722), a first tongue pressing boss (723) and a second tongue pressing boss (724); the exhaust switch (711) is matched with the second tongue pressing groove (722); the second tongue pressing boss (724) is matched with the exhaust workbench (731); the air inlet switch (712) is matched with the first tongue pressing groove (721); the tongue pressing boss I (723) is matched with the air inlet workbench (732);
the valve body (71) is also provided with an air bag interface (713) for connecting the air bag (5) for inflation, an air inlet interface (714) for connecting an external air source and an air outlet interface (715) for connecting the air bag (5) for deflation; an exhaust switch (711) and an air inlet switch (712) in the valve body (71) are used for controlling the inflation and deflation of the air bag (5);
the tongue pressing (72) is of a flat bending structure, one surface of the tongue pressing (72) is provided with a first tongue pressing groove (721) and a second tongue pressing groove (722), and the other surface of the tongue pressing (72) is provided with a first tongue pressing boss (723) and a second tongue pressing boss (724);
the tongue pressing (72) is also provided with a first tongue pressing plane (725) for preventing the exhaust workbench (731) from mistakenly touching the first tongue pressing boss (723) and a second tongue pressing plane (726) for preventing the air inlet workbench (732) from mistakenly touching the second tongue pressing boss (724); the first tongue pressing plane (725) and the second tongue pressing plane (726) are arranged in a diagonal mode, the first tongue pressing plane (725) is connected with the first tongue pressing boss (723), and the second tongue pressing plane (726) is connected with the second tongue pressing boss (724);
the cam (73) is in a fan shape, and the exhaust workbench (731) and the air inlet workbench (732) are positioned at two ends of the fan-shaped cambered surface; the arc surface between the exhaust workbench (731) and the air inlet workbench (732) is an idle stroke arc surface, namely when the pressure tongue (72) is positioned in the corresponding range of the idle stroke arc surface, the pressure tongue is not contacted with the exhaust workbench (731) and the air inlet workbench (732), the air bag (5) is not inflated and deflated, the corresponding arc angle of the idle stroke arc surface on the cam sector is slightly larger than the corresponding arc angle of the pressure tongue (72) on the cam sector, and the difference of the two arc angles is within the range of 3-5 degrees.
2. The car seat cam adjustment type shock absorbing device according to claim 1, wherein the cam (73) is further provided with a cable groove (733); one end of a cable (741) of the inhaul cable (74) is fixed on the inhaul cable groove (733).
3. The car seat cam adjusted shock absorber device according to claim 1, wherein a handle (8) for pulling the cable (74) is further connected to the cable (74).
4. The vehicle seat cam adjusted shock absorbing device according to claim 1, wherein the outer scissor frame (3) and the inner scissor frame (4) are arranged crosswise; one end of the outer scissor frame (3) is rotatably connected to the upper frame (1), and the other end of the outer scissor frame is slidably connected to the lower frame (2); one end of the inner scissor frame (4) is rotatably connected to the lower frame (2), and the other end of the inner scissor frame is slidably connected to the upper frame (1).
5. The vehicle seat cam adjusted shock absorber device according to claim 1, wherein a support (32) is further provided on the outer scissor frame (3); the pull cable (74) is mounted on the bracket (32).
6. A method of damping a cam-adjusted shock absorbing device for a vehicle seat as set forth in any one of claims 1 to 5, comprising the steps of:
the method comprises the following steps: the air bag (5) is inflated and deflated, after the automobile seat is adjusted to a preset position, the automobile starts to get on the road, the uneven road surface can cause the automobile seat to vibrate, the air bag (5) and the damper (6) play a role in buffering and energy absorption together, and the automobile can continuously inflate and deflate the air bag (5) to enable the height of the seat to be stable in the driving process;
step two: when the automobile seat vibrates downwards, the upper frame (1) descends, the included angle between the outer shear shank (3) and the inner shear shank (4) in the horizontal direction becomes smaller, the pressure tongue (72) moves downwards relative to the position of the cam (73), so that the air inlet workbench (732) contacts the first pressure tongue boss (723), the first pressure tongue groove (721) is pressed downwards towards the air inlet switch (712), the air inlet switch (712) is opened, and the air bag (5) starts to be inflated; the air bag (5) is inflated to enable the upward elastic force of the air bag (5) on the automobile seat to be enhanced, so that vibration is buffered, the automobile seat rises until the air inlet workbench (732) is separated from the tongue pressing boss I (723), the tongue pressing groove I (721) releases the air inlet switch (712), the air inlet switch (712) is closed, and the air bag (5) stops inflating;
step three: when the automobile seat vibrates upwards, the upper frame (1) rises, the included angle between the outer scissor frame (3) and the inner scissor frame (4) in the horizontal direction is increased, the position of the tongue pressing (72) relative to the cam (73) moves upwards, so that the exhaust workbench (731) is contacted with the second tongue pressing boss (724), the second tongue pressing groove (722) is pressed downwards towards the exhaust switch (711), the exhaust switch (711) is opened, and the air bag (5) starts to exhaust air; the air bag (5) is deflated, so that the upward elastic force of the air bag (5) on the automobile seat is weakened, vibration is buffered, the automobile seat descends until the exhaust workbench (731) is separated from the second tongue pressing boss (724), the second tongue pressing groove (722) releases the exhaust switch (711), the exhaust switch (711) is closed, and the air bag (5) stops being deflated.
7. A method of height adjustment of a cam adjusted shock absorber device for vehicle seats according to any one of claims 1 to 5, comprising a working height raising step and a working height lowering step;
the working height raising step comprises:
the method comprises the following steps: the handle (8) is pulled upwards for a certain distance to reach a handle position corresponding to a preset position, so that a thread (741) of the inhaul cable (74) pulls the cam (73) to rotate anticlockwise, the air inlet workbench (732) contacts the first tongue pressing boss (723), the first tongue pressing groove (721) is pressed downwards towards the air inlet switch (712), the air inlet switch (712) is opened, and the air bag (5) starts to inflate;
step two: after the air bag (5) is inflated to a preset position, the upper frame (1) rises, so that the position of the pressure tongue (72) moves upwards relative to the cam (73), the air inlet workbench (732) is separated from the first pressure tongue boss (723), the first pressure tongue groove (721) also releases the air inlet switch (712), the air inlet switch (712) is closed, and the air bag (5) stops inflating;
the working height reducing step includes:
the method comprises the following steps: the handle (8) is loosened downwards by a certain distance to a handle position corresponding to a preset position, the cam (73) rotates clockwise under the action of the spring (75), the exhaust workbench (731) contacts the second tongue pressing boss (724) and enables the second tongue pressing groove (722) to be pressed downwards towards the exhaust switch (711), the exhaust switch (711) is opened, and the air bag (5) begins to deflate;
step two: after the air bag (5) is deflated to a preset position, the upper frame (1) descends to cause the position of the tongue pressing (72) to move downwards relative to the cam (73), the exhaust workbench (731) is separated from the second tongue pressing boss (724), the second tongue pressing groove (722) releases the exhaust switch (711), the exhaust switch (711) is closed, and the air bag (5) stops deflating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011151105.9A CN112172630B (en) | 2020-10-24 | 2020-10-24 | Automobile seat cam adjusting type damping device and damping method and height adjusting method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011151105.9A CN112172630B (en) | 2020-10-24 | 2020-10-24 | Automobile seat cam adjusting type damping device and damping method and height adjusting method thereof |
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| CN112172630A CN112172630A (en) | 2021-01-05 |
| CN112172630B true CN112172630B (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011151105.9A Active CN112172630B (en) | 2020-10-24 | 2020-10-24 | Automobile seat cam adjusting type damping device and damping method and height adjusting method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115352333B (en) * | 2022-07-08 | 2024-03-19 | 延锋国际座椅系统有限公司 | Seat shock absorber of integrated valve mechanism |
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| CN112172630A (en) | 2021-01-05 |
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