Vehicle seat collision energy absorption device, vehicle seat assembly and vehicle

Abstract

The invention discloses a vehicle seat collision energy absorption device, a vehicle seat assembly and a vehicle. The vehicle seat collision energy absorption device is used for controlling the pitching speed of a vehicle seat during collision. The vehicle seat collision energy absorption device comprises a rotating rod and a control mechanism, the rotating rod rotates along with pitching of a vehicle seat, the control mechanism loosens the rotating rod to allow the rotating rod to rotate freely, and the control mechanism limits the rotating rod to allow the rotating rod to rotate with resistance; wherein the control mechanism comprises a rotating matching part, a material removing part and a driving mechanism; the rotating matching piece is driven by the rotation of the rotating rod, so that the rotating matching piece has a motion path; a gap is formed between the material removing part and the movement path so as to loosen the rotating rod; and the driving mechanism drives the material removing piece to the motion path to remove the material of the rotating matching piece which moves, so that the rotating rod is limited.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle collision safety, and particularly relates to a vehicle seat collision energy absorption device, a vehicle seat assembly and a vehicle. Background Art

[0002] A vehicle seat can recline to allow an occupant to sit in a lying position. When a vehicle collision occurs, the vehicle seat needs to pitch forward to return the occupant to a sitting position in order to reduce occupant injury. The pitching forward speed of the vehicle seat should be controlled, and an overly fast pitching forward speed should be avoided to reduce occupant injury. Summary of the Invention

[0003] The purpose of the present invention is to provide a vehicle seat collision energy absorption device, a vehicle seat assembly and a vehicle for controlling the pitching speed of a vehicle seat during a collision.

[0004] In a first aspect, the present invention provides a vehicle seat collision energy absorption device. According to an embodiment of the present invention, the vehicle seat collision energy absorption device includes a rotating rod and a control mechanism. The rotating rod rotates as the vehicle seat pitches. The control mechanism relaxes the rotating rod to allow the rotating rod to rotate freely, and the control mechanism restricts the rotating rod to allow the rotating rod to rotate with resistance. Wherein, the control mechanism includes a rotating mating part, a material removal part and a driving mechanism; the rotating mating part is driven by the rotation of the rotating rod, so as to have a movement path; the material removal part has a gap with the movement path to relax the rotating rod; the driving mechanism drives the material removal part to the movement path to remove the material of the moving rotating mating part, thereby restricting the rotating rod.

[0005] In one or more embodiments, the rotating mating part is driven by the rotation of the rotating rod to move linearly, and the movement path is a linear movement path.

[0006] In one or more embodiments, the rotating rod is provided with a gear, and the rotating mating part is provided with a rack, and the gear meshes with the rack.

[0007] In one or more embodiments, the material removal part is a cutting tool.

[0008] In one or more embodiments, the material removal part is a cutting tool, and the cutting tool has a straight cutting edge, and the straight cutting edge is parallel to the linear movement path.

[0009] In one or more embodiments, the rotating mating part is provided with a material reduction part, and the material reduction part expands outward along the movement path, so that the amount of material removed by the material removal part when the material reduction part moves along the movement path increases.

[0010] In one or more embodiments, the rotating fitting is provided with a material removal portion having an inclined wall inclined relative to the linear motion path, and the inclined wall moves along the linear motion path so that the material is removed by the material removal member from the small end of the inclined wall to the large end of the inclined wall.

[0011] In one or more embodiments, the driving mechanism is configured with a linear chute perpendicular to the linear motion path, the material removal member is configured with a slider located in the linear chute, and the driving mechanism drives the slider to slide in the linear chute to drive the material removal member to the motion path.

[0012] In one or more embodiments, the control mechanism relaxes the rotating rod to allow the vehicle seat to pitch as the rotating rod rotates, and the vehicle seat collision energy absorption device is further provided with an adjustment driving mechanism that drives the rotating rod to rotate to adjust the pitch of the vehicle seat.

[0013] In one or more embodiments, the adjustment driving mechanism is provided with a shaft member, the rotating rod is connected to the shaft member on the outer peripheral side, and the adjustment driving mechanism drives the shaft member to drive the rotating rod to rotate; the shaft member is configured with an adjustment disengagement mechanism that drives the shaft member to move axially to disconnect the connection between the adjustment driving mechanism and the rotating rod, thereby allowing the rotating rod to rotate as the vehicle seat pitches.

[0014] In one or more embodiments, the adjustment disengagement mechanism includes a pulling member connected to the shaft member, and the pulling member pulls the shaft member to axially disengage from the rotating rod and / or the adjustment driving mechanism.

[0015] In one or more embodiments, the vehicle seat collision energy absorption device is provided with a triggering mechanism that triggers the driving mechanism to drive the material removal member to the motion path, and simultaneously triggers the adjustment disengagement mechanism to drive the shaft member to move axially.

[0016] In one or more embodiments, the driving mechanism is provided with a first transmission mechanism to drive the material removal member, the adjustment disengagement mechanism is provided with a second transmission mechanism to drive the shaft member, and the triggering mechanism is provided with an actuator that simultaneously drives the first transmission mechanism and the second transmission mechanism.

[0017] In one or more embodiments, the first transmission mechanism is provided with a first link mechanism including a first input rod, the second transmission mechanism is provided with a second link mechanism including a second input rod, and the actuator is connected to the first input rod and connected to the second input rod.

[0018] In one or more embodiments, the first input rod is provided with a first rotating shaft and a first input shaft, the actuator is provided with a first kidney-shaped hole, the first kidney-shaped hole is inserted with the first input shaft and allows the first input shaft to slide relative to the first kidney-shaped hole, so as to allow the first input rod to rotate around the first rotating shaft; the second input rod is provided with a second rotating shaft and a second input shaft, the actuator is provided with a second kidney-shaped hole, the second kidney-shaped hole is inserted with the second input shaft and allows the second input shaft to slide relative to the second kidney-shaped hole, so as to allow the second input rod to rotate around the second rotating shaft.

[0019] In one or more embodiments, the driving mechanism is configured with a sliding groove, the material removing member is configured with a sliding block, the sliding block is located in the sliding groove, and the sliding block drives the material removing member to the movement path; the first link mechanism is further provided with a first output rod, and the first output rod is rotatably connected to the sliding block and the first input rod respectively; the actuator drives the first input rod, so as to drive the first output rod, and further drive the sliding block to slide in the sliding groove.

[0020] In one or more embodiments, the adjusting and disengaging mechanism includes a pulling member, the pulling member is connected to the shaft member, and the pulling member pulls the shaft member to axially disengage from the rotating rod and / or the adjusting driving mechanism; the second link mechanism is further provided with a second output rod, the second output rod is rotatably connected to the second input rod and is connected to the pulling member; the actuator drives the second input rod, so as to drive the second output rod, and further drive the pulling member to pull the shaft member.

[0021] In one or more embodiments, the pulling member is a steel wire rope.

[0022] In one or more embodiments, the triggering mechanism is configured with a gas ignition and propulsion mechanism, and the gas ignition and propulsion mechanism drives the actuator to move linearly.

[0023] In a second aspect, the present invention provides a vehicle seat assembly. According to an embodiment of the present invention, the vehicle seat assembly includes a vehicle seat and the above-mentioned vehicle seat collision energy absorption device.

[0024] In a third aspect, the present invention provides a vehicle. According to an embodiment of the present invention, the vehicle includes a vehicle seat and the above-mentioned vehicle seat collision energy absorption device.

[0025] The embodiments of the present invention at least have the following beneficial effects:

[0026] The driving mechanism drives the material removal member to a movement path. When the rotating mating member moves along the movement path past the material removal member, the material removal member removes material from the rotating mating member, thereby applying a resistance to the rotating mating member and further applying a rotational resistance to the rotating rod. The rotating rod rotates against the rotational resistance, absorbs the energy of the vehicle seat pitch, reduces the speed of the vehicle seat pitch, and reduces or even avoids the injury suffered by the occupant. Brief Description of the Drawings

[0027] The above and other features, properties, and advantages of the present invention will become more apparent from the following description in conjunction with the drawings and embodiments, wherein:

[0028] Figure 1 Is an isometric view of the vehicle seat impact energy absorption device;

[0029] Figure 2 Is a partial view of the vehicle seat impact energy absorption device;

[0030] Figure 3 Is a partial view of the vehicle seat impact energy absorption device;

[0031] Figure 4 Is an isometric view of the gear and the rack;

[0032] Figure 5 Is a partial view of the vehicle seat impact energy absorption device;

[0033] Figure 6 Is an exploded view of the shaft member and the adjustment drive mechanism;

[0034] Figure 7 Is an exploded view of the gas ignition propulsion mechanism;

[0035] Reference Numerals:

[0036] 100 - Rotating Rod;

[0037] 101 - Linkage Mechanism;

[0038] 102 - Gear;

[0039] 103 - First Rod;

[0040] 104 - Second Rod;

[0041] 200 - Control Mechanism;

[0042] 201 - Rotating Mating Member;

[0043] 202 - Material Removal Member;

[0044] 203 - Driving Mechanism;

[0045] 204 - Cutting Tool;

[0046] 205 - Material removal part;

[0047] 206 - Large end of the material removal part;

[0048] 207 - Small end of the material removal part;

[0049] 208 - Rack;

[0050] 209 - Linear slide bar;

[0051] 210 - First linear slide groove;

[0052] 211 - Linear cutting edge;

[0053] 212 - Inclined wall;

[0054] 213 - Large end of the inclined wall;

[0055] 214 - Small end of the inclined wall;

[0056] 215 - Second linear slide groove;

[0057] 216 - Slide block;

[0058] 217 - First transmission mechanism;

[0059] 218 - First link mechanism;

[0060] 219 - First input rod;

[0061] 220 - First rotating shaft;

[0062] 221 - First input shaft;

[0063] 222 - First output rod;

[0064] 300 - Adjusting drive mechanism;

[0065] 301 - Shaft part;

[0066] 302 - Lead screw;

[0067] 303 - Adjusting disengaging mechanism;

[0068] 304 - Pulling part;

[0069] 305 - Second transmission mechanism;

[0070] 306 - Second link mechanism;

[0071] 307 - Second input rod;

[0072] 308 - Second rotating shaft;

[0073] 309 - Second input shaft;

[0074] 310 - Second output rod;

[0075] 400 - Trigger mechanism;

[0076] 401 - Executing member;

[0077] 402 - Gas ignition propulsion mechanism;

[0078] 403 - Propulsion member;

[0079] 404 - Retainer;

[0080] 405 - Ignition unit;

[0081] 406 - Fixed frame;

[0082] 407 - Pipe;

[0083] 408 - Push rod;

[0084] 409 - Third linear sliding groove;

[0085] 410 - First kidney-shaped hole;

[0086] 411 - Second kidney-shaped hole;

[0087] 500 - Underframe;

[0088] 600 - Base plate. Detailed implementation mode

[0089] Now, reference will be made in detail to the embodiments of the present invention, one or more examples of which are shown in the accompanying drawings. Each example is provided to explain the present invention, not to limit the present invention. In fact, it will be obvious to those skilled in the art that various modifications and variations can be made to the present invention without departing from the scope or spirit of the present invention. For example, features shown or described as part of one embodiment can be used with another embodiment to yield yet another embodiment. Accordingly, the present invention is intended to cover these modifications and variations that fall within the scope of the appended claims and their equivalents.

[0090] It should be noted that these and subsequent other drawings are only examples, and they are not drawn under the condition of equal proportion, and should not be used to limit the actual scope of protection required by the present invention.

[0091] The terms "first", "second", etc. can be used interchangeably to distinguish one feature from another, and are not intended to indicate that each feature must be located in the position shown in the drawings in each embodiment.

[0092] A vehicle or a vehicle seat assembly includes a vehicle seat and the following vehicle seat collision energy absorption device.

[0093] As Figure 1 shown, the vehicle seat collision energy absorption device includes a rotating rod 100. The rotating rod 100 rotates as the vehicle seat pitches. The rotating rod 100 can be arranged at the bottom of the vehicle seat and can be connected to the seat basin of the vehicle seat through a linkage mechanism 101. The pitching of the seat basin drives the rotating rod 100 to rotate through the linkage mechanism 101. When the backrest and the seat basin in the vehicle seat are designed to rotate together, the linkage mechanism 101 adjusts the overall angle of the vehicle seat by adjusting the pitching of the connected seat basin; when the backrest and the seat basin in the vehicle seat are designed to be rotatable separately (for example, in the scenario of a zero-gravity seat), the linkage mechanism 101 can only adjust the pitching of the seat basin. The rotating rod 100 can be an adjusting rod for the pitching of the vehicle seat, and the vehicle seat pitches as the rotating rod 100 rotates. The rotation of the rotating rod 100 can drive the seat basin of the vehicle seat to pitch through the linkage mechanism 101. Both ends of the rotating rod 100 can be rotatably supported on two chassis 500 respectively. The chassis 500 can support the seat basin of the vehicle seat at the bottom of the vehicle seat, and the chassis 500 can be connected to the vehicle body through a sliding mechanism to realize the forward and backward sliding of the vehicle seat.

[0094] As Figure 1 shown, the vehicle seat collision energy absorption device further includes a control mechanism 200. The control mechanism 200 can be arranged on a bottom plate 600. The control mechanism 200 relaxes the rotating rod 100 to allow the rotating rod 100 to rotate freely. The control mechanism 200 does not apply a rotational resistance to the rotating rod 100, allowing the rotating rod 100 to rotate without overcoming the rotational resistance. The rotating rod 100 is in a free state and can rotate as the vehicle seat pitches, and the vehicle seat can pitch as the rotating rod 100 rotates. The control mechanism 200 restricts the rotating rod 100 to allow the rotating rod 100 to rotate with resistance. The control mechanism 200 applies a rotational resistance to the rotating rod 100, allowing the rotating rod 100 to rotate while overcoming the rotational resistance. The rotating rod 100 is in a restricted state, the vehicle seat pitches, and the rotating rod 100 rotates as the vehicle seat pitches.

[0095] In the normal state where the vehicle does not collide, the control mechanism 200 can relax the rotating rod 100, and the rotating rod 100 is in a free state. The operator can adjust the pitch of the vehicle seat by controlling the rotation of the rotating rod 100. In the collision state where the vehicle collides, the rotating rod 100 in the free state cannot limit the pitch of the vehicle seat. The vehicle seat quickly pitches forward or backward under the action of inertia, resulting in injury to the occupant. Therefore, the control mechanism 200 can limit the rotating rod 100, and the rotating rod 100 is in a restricted state. The rotating rod 100 resists the pitch of the vehicle seat. The pitch of the vehicle seat causes the rotating rod 100 to rotate against the rotational resistance, absorbs the energy of the pitch of the vehicle seat, reduces the speed of the pitch of the vehicle seat, and reduces or even avoids the injury suffered by the occupant. Taking the implementation scenario where the vehicle seat is a zero-gravity seat as an example, at this time, the occupant is sitting in the cabin in a lying position. In the collision state, when the vehicle seat pitches forward and the occupant returns from the lying position to the sitting position, the control mechanism 200 can limit the rotating rod 100, and the rotating rod 100 is in a restricted state. The rotating rod 100 resists the forward pitch of the vehicle seat. The forward pitch of the vehicle seat causes the rotating rod 100 to rotate against the rotational resistance, absorbs the energy of the forward pitch of the vehicle seat, reduces the speed of the forward pitch of the vehicle seat, and reduces or even avoids the injury suffered by the occupant.

[0096] As Figures 1 to 3 shown, the control mechanism 200 includes a rotation fitting 201, a material removal member 202, and a driving mechanism 203. As Figures 1 to 4 shown, the rotation fitting 201 is driven by the rotation of the rotating rod 100, and the rotation fitting 201 thus has a movement path, and the movement path is the spatial area through which the rotation fitting 201 moves. As Figure 1 shown, the material removal member 202 has a gap with the movement path, and the material removal member 202 does not enter the movement path and does not interfere with the movement of the rotation fitting 201 in the movement path, so as not to apply rotational resistance to the rotating rod 100. Thus, the control mechanism 200 normally relaxes the rotating rod 100, so that in the normal state where the vehicle does not collide, the operator can adjust the pitch of the vehicle seat by controlling the rotation of the rotating rod 100.

[0097] The driving mechanism 203 causes the control mechanism 200 to switch from the Figure 1 shown relaxation state to the Figure 2 shown restricted state. The driving mechanism 203 drives the material removal member 202 to the movement path, eliminates the gap between the material removal member 202 and the movement path, makes the material removal member 202 enter the movement path, and interferes with the movement of the rotation fitting 201 in the movement path. When the rotation fitting 201 moves through the material removal member 202 in the movement path, the material removal member 202 removes the material of the rotation fitting 201. Thus, the material removal member 202 applies resistance to the rotation fitting 201, and further applies rotational resistance to the rotating rod 100. Thus, the control mechanism 200 restricts the rotating rod 100 in the collision state, so that the rotating rod 100 resists the pitch of the vehicle seat.

[0098] As Figure 1 、 Figure 2 and Figure 5 shown, the material removal member 202 may be a cutting tool 204. The cutting edge of the cutting tool 204 is spaced from the movement path. The drive mechanism 203 drives the cutting tool 204 to bring the cutting edge into the movement path, and the rotating mating member 201 is cut by the cutting edge when moving through the cutting edge in the movement path.

[0099] As Figure 2 and Figure 4 shown, the rotating mating member 201 may be provided with a material removal portion 205. The rotating mating member 201 may be fixedly connected to the material removal portion 205, and the rotating mating member 201 drives the material removal portion 205 to move synchronously. The material removal portion 205 is adjacent to the material removal member 202, and the material removal portion 205 of the rotating mating member 201 is removed by the material removal member 202 when moving through the material removal member 202 in the movement path. The material removal portion 205 may expand outward along the movement path. The material removal portion 205 has a large end 206 and a small end 207. Taking the extension direction of the movement path as the baseline, the large end 206 is located outside the small end 207. The material removal portion 205 extends from the small end 207 to the large end 206 along the extension direction of the movement path, and the material removal portion 205 has an outer contour that expands outward along the extension direction of the movement path. As the material removal portion 205 moves along the movement path and is removed by the material removal member 202, the amount of material removed increases. When the material removal portion 205 moves through the material removal member 202 in the movement path, the small end 207 passes through the material removal member 202 first, and the large end 206 passes through the material removal member 202 later. This makes the process of the material removal member 202 removing the material of the material removal portion 205 be regarded as proceeding from the small end 207 towards the large end 206. The thickness of the material removed from the large end 206 located outside by the material removal member 202 is greater than the thickness of the material removed from the small end 207 located inside by the material removal member 202. The more severe the collision of the vehicle, the greater the angular displacement of the vehicle seat pitch, the greater the angular displacement of the rotating rod 100, the greater the movement displacement of the rotating mating member 201 in the movement path, the greater the thickness of the material removed from the material removal portion 205 by the material removal member 202, the greater the resistance exerted by the material removal member 202 on the rotating mating member 201, the greater the rotational resistance exerted by the rotating mating member 201 on the rotating rod 100, the more energy absorbed by the vehicle seat pitch, the stronger the containment of the vehicle seat pitch, the stronger the deceleration effect on the vehicle seat pitch, and the reduction or even avoidance of the injury suffered by the occupant.

[0100] As Figures 1 to 4As shown, the rotating fitting 201 can be linearly moved by the rotation of the rotating rod 100. The movement path is a linear movement path, which is a spatially extended region along a straight line that the rotating fitting 201 linearly moves through. The rotating fitting 201 can also be driven by the rotation of the rotating rod 100 to perform other forms of movement, such as rotation, and the movement path is an arc movement path that the rotating fitting 201 rotates through. Obviously, the linear movement path of the rotating fitting 201 is simpler.

[0101] As Figures 1 to 4 shown, the rotating rod 100 can be provided with a gear 102. The gear 102 can be fixedly sleeved on the outer peripheral side of the rotating rod 100 to rotate synchronously with the rotating rod 100. The rotating fitting 201 can be provided with a rack 208. The rotating fitting 201 can be fixedly connected to the rack 208 to move synchronously with the rack 208. The gear 102 meshes with the rack 208. The rotation of the rotating rod 100 drives the gear 102 to rotate, the rotation of the gear 102 drives the rack 208 to linearly move, and the rack 208 drives the rotating fitting 201 to linearly move. The cooperation structure of the gear 102 and the rack 208 is simple and reliable.

[0102] As Figures 1 to 4 shown, the rotating fitting 201 can be configured with a linear slide bar 209, and the linear slide bar 209 extends along a straight line. The linear slide bar 209 can be fixedly arranged on the bottom plate 600. The rotating fitting 201 can be provided with a first linear slide groove 210, and the first linear slide groove 210 extends along a straight line. The linear slide bar 209 is inserted into the first linear slide groove 210 and slidably cooperates to guide the first linear slide groove 210 to linearly move, thereby guiding the rotating fitting 201 to linearly move.

[0103] As Figure 1 、 Figure 2 and Figure 5 shown, the cutting tool 204 can have a linear cutting edge 211, and the linear cutting edge 211 is parallel to the linear extension direction of the linear movement path, so that when the rotating fitting 201 linearly moves, it is cut by the linear cutting edge 211 at an angle parallel to the linear movement direction, avoiding the cutting movement of the rotating fitting 201 relative to the cutting tool 204 from stopping due to excessive cutting resistance.

[0104] As Figure 2 and Figure 4As shown, the material removal portion 205 may have an inclined wall 212. The inclined wall 212 expands outward along the linear extension direction of the linear motion path. The inclined wall 212 is inclined relative to the linear extension direction of the linear motion path. The inclined wall 212 has a large end 213 and a small end 214. Taking the linear extension direction of the linear motion path as the baseline, the large end 213 is located outside the small end 214. The inclined wall 212 extends from the small end 214 along the linear extension direction of the linear motion path to the large end 213. The inclined wall 212 is the outer wall of the material removal portion 205 that expands outward along the linear extension direction of the linear motion path. The inclined wall 212 causes more material of the material removal portion 205 to be removed by the material removal member 202 when moving along the linear motion path. When the inclined wall 212 moves along the linear motion path past the material removal member 202, the small end 214 of the inclined wall 212 passes the material removal member 202 first, and the large end 213 of the inclined wall 212 passes the material removal member 202 later. This makes the process of the material removal member 202 removing the material of the material removal portion 205 be regarded as proceeding from the small end 214 of the inclined wall 212 to the large end 213 of the inclined wall 212. The thickness of the material removed by the material removal member 202 from the large end 213 located outside is greater than the thickness of the material removed by the material removal member 202 from the small end 214 located inside. The more severe the collision of the vehicle, the greater the angular displacement of the vehicle seat pitch, the greater the angular displacement of the rotating rod 100, the greater the movement displacement of the rotating fitting 201 along the linear motion path, the greater the thickness of the material removed by the material removal member 202 from the inclined wall 212, the greater the resistance exerted by the material removal member 202 on the rotating fitting 201, the greater the rotational resistance exerted by the rotating fitting 201 on the rotating rod 100, the more energy of the vehicle seat pitch is absorbed, the stronger the containment of the vehicle seat pitch, the stronger the deceleration effect on the vehicle seat pitch, and the injury suffered by the occupant is reduced or even avoided. The inclined wall 212 may be a flat wall. As the rotating fitting 201 moves along the linear motion path, the material removal member 202 is equivalent to removing material from the small end 214 of the inclined wall 212 to the large end 213 of the inclined wall 212, and the thickness of the material removed by the material removal member 202 increases linearly, and the generated resistance increases linearly.

[0105] As Figures 1 to 3As shown, the driving mechanism 203 can be configured with a second linear chute 215, and the second linear chute 215 extends linearly. The second linear chute 215 can be fixedly arranged on the bottom plate 600. The material removal member 202 can be configured with a slider 216. The slider 216 can be fixedly connected to the material removal member 202 to drive the material removal member 202 to move synchronously. The slider 216 is located in the second linear chute 215, is inserted and slidably mated with the second linear chute 215, and the second linear chute 215 guides the slider 216 to slide linearly, thereby guiding the material removal member 202 to move linearly. The driving mechanism 203 drives the slider 216 to slide linearly in the second linear chute 215, and the slider 216 drives the material removal member 202 to move linearly to the linear movement path of the rotation mating member 201. The second linear chute 215 is perpendicular to the linear movement path of the rotation mating member 201. The linear extension direction of the second linear chute 215 is perpendicular to the linear extension direction of the linear movement path, and the guiding wall surface of the second linear chute 215 is perpendicular to the linear extension direction of the linear movement path. This enables the rotation mating member 201 to push against the material removal member 202 along the guiding wall surface of the second linear chute 215 perpendicular to the linear movement direction of the rotation mating member 201 during the process of the rotation mating member 201 moving linearly along the linear movement path and being removed of material by the material removal member 202. The material removal member 202 abuts against the guiding wall surface of the second linear chute 215 and remains fixed without moving during the process of removing material.

[0106] As described above, the rotating rod 100 can be an adjusting rod for the pitch of the vehicle seat. In the normal state where the vehicle does not collide, the control mechanism 200 can relax the rotating rod 100, and the rotating rod 100 is in a free state. The vehicle seat pitches as the rotating rod 100 rotates, and the operator can adjust the pitch of the vehicle seat by controlling the rotation of the rotating rod 100. As Figure 1 shown, the vehicle seat collision energy absorption device is further provided with an adjustment driving mechanism 300, and the adjustment driving mechanism 300 drives the rotating rod 100 to rotate to adjust the pitch of the vehicle seat. The adjustment driving mechanism 300 can drive the first rod 103 to drive the rotating rod 100 to rotate. The first rod 103 is fixedly connected to the rotating rod 100 and protrudes outward from the rotating rod 100 to the outer peripheral side. The adjustment driving mechanism 300 applies a driving force to the first end of the first rod 103, thereby applying a torque to the rotating rod 100 to drive the rotating rod 100 to rotate. The link mechanism 101 can also be provided with a second rod 104. The first end of the second rod 104 can be pivotally connected to the second end of the first rod 103, and the second end of the second rod 104 can be connected to the seat pan of the vehicle seat. The adjustment driving mechanism 300 drives the first rod 103 to drive the rotating rod 100 to rotate, and further drives the second rod 104 to swing, thereby driving the seat pan of the vehicle seat to pitch. The adjustment driving mechanism 300 can also drive the rotation of the rotating rod 100 through other transmission mechanisms, and is not limited to the above link mechanism 101.

[0107] Further refer to Figure 3 and Figure 6 , the adjustment drive mechanism 300 may be provided with a shaft member 301, and the rotating rod 100 is connected to the shaft member 301 on the outer peripheral side. The shaft member 301 may be provided at the first end of the first rod 103 and inserted into the hole at the first end of the first rod 103, so that the rotating rod 100 is connected to the shaft member 301 on the outer peripheral side. The adjustment drive mechanism 300 drives the shaft member 301 to drive the rotating rod 100 to rotate. The adjustment drive mechanism 300 may also be provided with a lead screw 302. The lead screw 302 may be provided with a hole at the end, and the shaft member 301 may axially protrude from the hole at the first end of the first rod 103 and be inserted into the hole at the end of the lead screw 302. The lead screw 302 may be connected to a power source at the other end and thus be pushed by the power source. For example, a ball mechanism driven by a motor cooperates with the lead screw 302 to form a ball screw mechanism. The operator can drive the ball mechanism by operating the motor to push the lead screw 302, thereby pushing the shaft member 301, driving the first rod 103 to drive the rotating rod 100 to rotate, and further driving the second rod 104 to swing, so as to drive the pitch of the seat basin of the vehicle seat. To avoid jamming, at least one of the two sets of fits between the shaft member 301 and the hole at the first end of the first rod 103 and between the shaft member 301 and the hole at the end of the lead screw 302 is a relatively rotatable fit, and a rotational connection is adopted. In the illustrated embodiment, the hole at the first end of the first rod 103 is rotationally connected to the shaft member 301, allowing the shaft member 301 to rotate relative to the hole at the first end of the first rod 103. The shaft member 301 is inserted into the hole at the first end of the first rod 103 with a clearance to allow the shaft member 301 to rotate relative to the hole at the first end of the first rod 103. The shaft member 301 may be connected to the hole at the end of the lead screw 302 in a non-rotatable manner, and the shaft member 301 is inserted into the hole at the end of the lead screw 302 with an interference fit to be fixed. The adjustment drive mechanism 300 may also drive the shaft member 301 to drive the rotating rod 100 to rotate through other mechanisms, and is not limited to the above-mentioned lead screw 302 and first rod 103.

[0108] As described above, in the collision state of a vehicle collision, the control mechanism 200 may limit the rotating rod 100. The rotating rod 100 is in a restricted state, and the rotating rod 100 resists the pitch of the vehicle seat. The pitch of the vehicle seat causes the rotating rod 100 to rotate against the rotational resistance, absorbs the energy of the pitch of the vehicle seat, reduces the speed of the pitch of the vehicle seat, and reduces or even avoids the injury suffered by the occupant. However, the adjustment drive mechanism 300 connecting the rotating rod 100 through the shaft member 301 limits the angular displacement of the rotating rod 100 and restricts the rotation of the rotating rod 100 with rotational resistance, deteriorating the energy absorption and deceleration effects of the rotating rod 100 on the pitch of the vehicle seat. Thus, as Figure 1As shown, the shaft member 301 can be configured with an adjustment and detachment mechanism 303. The adjustment and detachment mechanism 303 drives the shaft member 301 to move axially to disconnect the connection between the adjustment drive mechanism 300 and the rotating rod 100, and releases the restriction of the adjustment drive mechanism 300 on the angular displacement of the rotating rod 100, thereby allowing the rotating rod 100 to rotate with the pitch of the vehicle seat against the rotational resistance, avoiding deterioration of the energy absorption and deceleration effects of the rotating rod 100 on the pitch of the vehicle seat.

[0109] Further referring to Figure 3 , the adjustment and detachment mechanism 303 can be provided with a pulling member 304. The pulling member 304 is connected to the shaft member 301. The pulling member 304 pulls the shaft member 301 to axially detach from the rotating rod 100 and / or the adjustment drive mechanism 300. The shaft member 301 moves axially to detach from one of the rotating rod 100 and the adjustment drive mechanism 300, or moves axially to detach from the rotating rod 100 and the adjustment drive mechanism 300, thereby disconnecting the connection between the adjustment drive mechanism 300 and the rotating rod 100. In the illustrated embodiment, the shaft member 301 moves axially to detach from the hole at the first end of the first rod 103 and the hole at the end of the lead screw 302, thereby detaching from the rotating rod 100 and the adjustment drive mechanism 300 and disconnecting the connection between the adjustment drive mechanism 300 and the rotating rod 100. The pulling member 304 can be a wire rope. The rope sleeve at the first end of the wire rope can be sleeved on the collar on the axial end face of the shaft member 301.

[0110] As Figure 1 shown, the vehicle seat collision energy absorption device can also be provided with a trigger mechanism 400. The trigger mechanism 400 triggers the drive mechanism 203 to drive the material removal member 202 to the movement path, and the trigger mechanism 400 simultaneously triggers the adjustment and detachment mechanism 303 to drive the shaft member 301 to move axially. In response to the collision signal of the vehicle, the trigger mechanism 400 triggers the drive mechanism 203 to switch the control mechanism 200 from the Figure 1 relaxed state shown in Figure 2 to the Figure 1 restricted state shown in Figure 3 to enable the rotating rod 100 to rotate against the rotational resistance, and the trigger mechanism 400 simultaneously triggers the adjustment and detachment mechanism 303 to switch the shaft member 301 from the

[0111] connected state shown in Figure 3 and Figure 5, the driving mechanism 203 can be provided with a first transmission mechanism 217 to drive the material removal member 202. The adjustment and detachment mechanism 303 can be provided with a second transmission mechanism 305 to drive the shaft member 301. The triggering mechanism 400 can be provided with an actuator 401, and the actuator 401 drives the first transmission mechanism 217 and the second transmission mechanism 305 simultaneously, so that the triggering mechanism 400 triggers the driving mechanism 203 and the adjustment and detachment mechanism 303 simultaneously.

[0112] As Figure 3 shown, the triggering mechanism 400 can be configured with a gas ignition and propulsion mechanism 402. The gas ignition and propulsion mechanism 402 drives the actuator 401 to move linearly, so that the actuator 401 drives the first transmission mechanism 217 and the second transmission mechanism 305 simultaneously. The gas ignition and propulsion mechanism 402 can drive the first actuator 203 in response to a collision signal of the vehicle. The gas ignition and propulsion mechanism 402 can receive the collision signal from the control unit of the vehicle, thereby igniting, releasing gas, and propelling, and then pushing the actuator 401 to move linearly. As Figure 7 shown, the gas ignition and propulsion mechanism 402 can include a propulsion member 403, a retainer 404, an ignition unit 405, a fixing bracket 406, and a pipeline 407. The propulsion member 403 can be a piston. The retainer 404 is installed with the ignition unit 405 and fixed to the pipeline 407 through the fixing bracket 406, and is in fluid communication with the pipeline 407. The propulsion member 403 as a piston is arranged in the pipeline 407. The ignition unit 405 ignites, and the retainer 404 quickly releases gas to push the propulsion member 403 to move outward along the pipeline 407. As Figure 5 shown, the actuator 401 can be configured with a push rod 408. The propulsion member 403 pushes the push rod 408, thereby pushing the actuator 401 to move linearly. The push rod 408 can protrude from the actuator 401 towards the gas ignition and propulsion mechanism 402, and is arranged on the forward direction side of the propulsion member 403 to be pushed by the propulsion member 403 to push the actuator 401 to move linearly.

[0113] As Figure 5 shown, the actuator 401 can be configured with a third linear chute 409. The third linear chute 409 extends along a straight line. The third linear chute 409 can be fixedly arranged on the bottom plate 600. The actuator 401 is located in the third linear chute 409, is inserted and slidably matched with the third linear chute 409, and the third linear chute 409 guides the actuator 401 to slide linearly.

[0114] As Figure 5As shown, the first transmission mechanism 217 may be provided with a first link mechanism 218. The first link mechanism 218 includes a first input rod 219, and the first input rod 219 is the power input rod of the first link mechanism 218. The second transmission mechanism 305 may be provided with a second link mechanism 306. The second link mechanism 306 includes a second input rod 307, and the second input rod 307 is the power input rod of the second link mechanism 306. The actuator 401 is connected to the first input rod 219 and also connected to the second input rod 307, so that the movement of the actuator 401 drives the first link mechanism 218 and the second link mechanism 306 simultaneously, and further drives the first transmission mechanism 217 and the second transmission mechanism 305 simultaneously.

[0115] As Figure 5 As shown, the first input rod 219 may be provided with a first rotating shaft 220. The first rotating shaft 220 is rotatably provided on the bottom plate 600 to allow the first input rod 219 to rotate around the first rotating shaft 220. The first input rod 219 may also be provided with a first input shaft 221. The first input shaft 221 is fixed to the first end of the first input rod 219. The actuator 401 may be provided with a first waist-shaped hole 410. The first waist-shaped hole 410 is inserted with the first input shaft 221 and allows the first input shaft 221 to slide relative to the first waist-shaped hole 410, so as to allow the first input rod 219 to rotate around the first rotating shaft 220. The first waist-shaped hole 410 may have an arc-shaped profile extending along an arc curve. The second input rod 307 may be provided with a second rotating shaft 308. The second rotating shaft 308 is rotatably provided on the bottom plate 600 to allow the second input rod 307 to rotate around the second rotating shaft 308. The second input rod 307 may also be provided with a second input shaft 309. The second input shaft 309 is fixed to the first end of the second input rod 307. The actuator 401 may also be provided with a second waist-shaped hole 411. The second waist-shaped hole 411 is inserted with the second input shaft 309 and allows the second input shaft 309 to slide relative to the second waist-shaped hole 411, so as to allow the second input rod 307 to rotate around the second rotating shaft 308. The second waist-shaped hole 411 may have an arc-shaped profile extending along an arc curve. The movement of the actuator 401 drives the first waist-shaped hole 410 and the second waist-shaped hole 411 to move simultaneously, so that the wall of the first waist-shaped hole 410 pushes the first input rod 219 to rotate around the first rotating shaft 220 to drive the first link mechanism 218, and at the same time, the wall of the second waist-shaped hole 411 pushes the second input rod 307 to rotate around the second rotating shaft 308 to drive the second link mechanism 306. The movement of the actuator 401 thus drives the first link mechanism 218 and the second link mechanism 306 simultaneously.

[0116] As Figure 5As shown, the driving mechanism 203 may be configured with a sliding groove, which may be the aforementioned second linear sliding groove 215. The material removing member 202 may be configured with the aforementioned slider 216. The first link mechanism 218 may further be provided with a first output rod 222, and the first output rod 222 is rotatably connected to the slider 216 and the first input rod 219 respectively. The first end of the first output rod 222 may be rotatably connected to the second end of the first input rod 219, allowing relative rotation between the first output rod 222 and the first input rod 219. The second end of the first output rod 222 may be rotatably connected to the slider 216, allowing relative rotation between the first output rod 222 and the slider 216. The movement of the actuator 401 drives the first input rod 219 to rotate around the first rotating shaft 220, thereby driving the first output rod 222, and further driving the slider 216 to slide in the sliding groove.

[0117] As Figure 5 shown, the second link mechanism 306 may further be provided with a second output rod 310. The second output rod 310 is rotatably connected to the second input rod 307 and is connected to the pulling member 304. The first end of the second output rod 310 may be rotatably connected to the second end of the second input rod 307, allowing relative rotation between the second output rod 310 and the second input rod 307. The second end of the second output rod 310 may be connected to the pulling member 304. The second end of the steel wire rope as the pulling member 304 may be fixed to the end face of the second end of the second output rod 310. The actuator 401 drives the second input rod 307 to rotate around the second rotating shaft 308, thereby driving the second output rod 310, and further driving the pulling member 304 to pull the shaft member 301.

[0118] Although the present invention is disclosed as above with embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present invention.

Claims

1. A vehicle seat collision energy absorption device, characterized in that, It includes a rotating rod and a control mechanism. The rotating rod rotates as the vehicle seat pitches. The control mechanism relaxes the rotating rod to allow the rotating rod to rotate freely, and the control mechanism restricts the rotating rod to allow the rotating rod to rotate with resistance. Wherein, the control mechanism includes: A rotation mating part, which is driven by the rotation of the rotating rod and thus has a movement path; A material removal part, which has a gap with the movement path to relax the rotating rod; and A driving mechanism, which drives the material removal part to the movement path to remove the material of the moving rotation mating part, thereby restricting the rotating rod.

2. The vehicle seat crash energy absorption device according to claim 1, characterized in that: The rotation mating part is driven by the rotation of the rotating rod to move linearly, and the movement path is a linear movement path.

3. The vehicle seat crash energy absorption device according to claim 2, characterized in that: A gear is arranged on the rotating rod, and a rack is arranged on the rotation mating part, and the gear meshes with the rack.

4. The vehicle seat crash energy absorption device according to claim 1, characterized in that: The material removal part is a cutting tool.

5. The vehicle seat crash energy absorption device according to claim 2, characterized in that: The material removal part is a cutting tool, and the cutting tool has a linear cutting edge, and the linear cutting edge is parallel to the linear movement path.

6. The vehicle seat crash energy absorption device according to claim 1, characterized in that: The rotation mating part is provided with a material reduction part, and the material reduction part expands outward along the movement path, so that the material removed by the material removal part when the material reduction part moves along the movement path increases.

7. The vehicle seat crash energy absorption device according to claim 2, characterized in that: The rotation mating part is provided with a material reduction part, and the material reduction part has an inclined wall inclined relative to the linear movement path, and the inclined wall moves along the linear movement path so that the material is removed by the material removal part from the small end of the inclined wall to the large end of the inclined wall.

8. The vehicle seat crash energy absorption device according to claim 2, characterized in that: The driving mechanism is configured with a linear sliding groove perpendicular to the linear movement path, the material removal part is configured with a slider, the slider is located in the linear sliding groove, and the driving mechanism drives the slider to slide in the linear sliding groove to drive the material removal part to the movement path.

9. The vehicle seat crash energy absorption device according to claim 1, characterized in that: The control mechanism relaxes the rotating rod to allow the vehicle seat to pitch as the rotating rod rotates. The vehicle seat crash energy absorption device is further provided with an adjustment driving mechanism, and the adjustment driving mechanism drives the rotating rod to rotate to adjust the pitch of the vehicle seat.

10. The vehicle seat crash energy absorption device according to claim 9, characterized in that: The adjustment driving mechanism is provided with a shaft member, the rotating rod is connected to the shaft member on the outer peripheral side, and the adjustment driving mechanism drives the shaft member to drive the rotating rod to rotate; The shaft member is provided with an adjustment and disengagement mechanism, and the adjustment and disengagement mechanism drives the shaft member to move axially to disconnect the connection between the adjustment drive mechanism and the rotating rod, so as to allow the rotating rod to rotate as the vehicle seat pitches.

11. The vehicle seat collision energy absorption device according to claim 10, wherein: The adjustment and disengagement mechanism includes a pulling member, the pulling member is connected to the shaft member, and the pulling member pulls the shaft member to axially disengage from the rotating rod and / or the adjustment drive mechanism.

12. The vehicle seat collision energy absorption device according to claim 10, wherein: The vehicle seat collision energy absorption device is provided with a triggering mechanism, and the triggering mechanism triggers the drive mechanism to drive the material removal member to the movement path, and at the same time triggers the adjustment and disengagement mechanism to drive the shaft member to move axially.

13. The vehicle seat collision energy absorption device according to claim 12, wherein: The drive mechanism is provided with a first transmission mechanism to drive the material removal member, the adjustment and disengagement mechanism is provided with a second transmission mechanism to drive the shaft member, the triggering mechanism is provided with an actuator, and the actuator drives the first transmission mechanism and the second transmission mechanism at the same time.

14. The vehicle seat collision energy absorption device according to claim 13, wherein: The first transmission mechanism is provided with a first link mechanism, the first link mechanism includes a first input rod, the second transmission mechanism is provided with a second link mechanism, the second link mechanism includes a second input rod, and the actuator is connected to the first input rod and the second input rod.

15. The vehicle seat collision energy absorption device according to claim 14, wherein: The first input rod is provided with a first rotating shaft and a first input shaft, the actuator is provided with a first waist-shaped hole, the first waist-shaped hole is inserted with the first input shaft and allows the first input shaft to slide relative to the first waist-shaped hole, so as to allow the first input rod to rotate around the first rotating shaft; The second input rod is provided with a second rotating shaft and a second input shaft, the actuator is provided with a second waist-shaped hole, the second waist-shaped hole is inserted with the second input shaft and allows the second input shaft to slide relative to the second waist-shaped hole, so as to allow the second input rod to rotate around the second rotating shaft.

16. The vehicle seat collision energy absorption device according to claim 15, wherein: The drive mechanism is provided with a chute, the material removal member is provided with a slider, the slider is located in the chute, and the slider drives the material removal member to the movement path; The first link mechanism is further provided with a first output rod, and the first output rod is respectively rotatably connected to the slider and the first input rod; The actuator drives the first input rod, thereby driving the first output rod, and further driving the slider to slide in the chute.

17. The vehicle seat collision energy absorption device according to claim 15, wherein: The adjustment and disengagement mechanism includes a pulling member, the pulling member is connected to the shaft member, and the pulling member pulls the shaft member to axially disengage from the rotating rod and / or the adjustment drive mechanism; The second link mechanism is further provided with a second output rod, the second output rod is rotatably connected to the second input rod and is connected to the pulling member; The actuator drives the second input rod, thereby driving the second output rod, and further driving the pulling member to pull the shaft member.

18. The vehicle seat collision energy absorption device according to claim 11 or 17, characterized in that: The pulling member is a steel wire rope.

19. The vehicle seat collision energy absorption device according to claim 13, characterized in that: The triggering mechanism is configured with a gas ignition propulsion mechanism, and the gas ignition propulsion mechanism drives the actuator to move linearly.

20. A vehicle seat assembly, characterized in that Comprising a vehicle seat and the vehicle seat collision energy absorption device according to any one of claims 1 to 19.

21. A vehicle, characterized in that Comprising a vehicle seat and the vehicle seat collision energy absorption device according to any one of claims 1 to 19.

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