Electric folding storage framework of seat

Abstract

The invention relates to an electric folding and storing framework of a seat, a cam locking mechanism comprises a double-toothed-plate mechanism and a cam mechanism, the double-toothed-plate mechanism comprises a static fluted disc and a movable fluted disc which are superposed, the static fluted disc is fixedly mounted on a backrest assembly, and the movable fluted disc is rotatably mounted on the backrest assembly; the cam mechanism comprises a cam and a cam linkage support, the two ends of the cam linkage support are rotationally connected with the cam and the movable fluted disc respectively, and the movable fluted disc drives the cam linkage support and drives the cam to make the cam abut against the static fluted disc in the locking state so that the function of locking the backrest assembly can be achieved. According to the electric folding storage framework of the seat, the concentric folding function of the backrest is achieved, meanwhile, the cam abuts against the static fluted disc when the seat is in the sitting position and the folding position, the function of locking a backrest assembly is achieved, the locking strength is improved, and the safety of the seat is improved. The cam locking mechanism prevents the backrest assembly from losing the locking capability and becoming a free state, so that the production cost is reduced.

Description

Technical Field

[0001] The invention relates to a vehicle seat, and more particularly to an electrically foldable and storable frame of the seat. Background Art

[0002] The backrest of a known vehicle seat is rotatably mounted on the seat pan via a recliner, and a motor is connected to the recliner to drive the backrest to flip. During a collision, the force of the luggage in the trunk hitting the backrest directly acts on the recliner in a locked state to prevent the backrest from tilting forward. Therefore, a high-strength recliner with high installation cost is required. Summary of the invention

[0003] In order to solve the problem of high cost in the above-mentioned prior art, the present invention provides an electric folding and storage frame for a seat.

[0004] The electric folding and storage frame of the seat according to the present invention comprises a backrest assembly, a cam locking mechanism and a motor, wherein the cam locking mechanism comprises a double-tooth plate mechanism and a cam mechanism, and the motor is connected to the backrest assembly through the double-tooth plate mechanism to realize the rotation of the backrest assembly; the double-tooth plate mechanism comprises a stacked static gear plate and a movable gear plate, wherein the static gear plate is fixedly mounted on the backrest assembly, and the movable gear plate is rotatably mounted on the backrest assembly; the cam mechanism comprises a cam and a cam linkage bracket, wherein the two ends of the cam linkage bracket are rotatably connected to the cam and the movable gear plate, respectively, so as to drive the cam linkage bracket through the movable gear plate and drive the cam to make it contact with the static gear plate in a locked state to realize the function of locking the backrest assembly.

[0005] Preferably, the cam-linked bracket has a waist groove for providing a return stroke of the backrest assembly.

[0006] Preferably, the backrest assembly has a rear stop point of the movable gear plate and a front stop point of the movable gear plate which are spaced apart from each other, and the movable gear plate has a motion idle stroke of the stationary gear plate defined by the rear stop point of the movable gear plate and the front stop point of the movable gear plate.

[0007] Preferably, the motor gear output end of the motor is constantly meshed with the movable gear plate, and the stationary gear plate has a number of teeth less than the movable gear plate to achieve an idle travel of the stationary gear plate.

[0008] Preferably, the electric folding and storage frame of the seat also includes a seat basin assembly, a first ground anchor mounting bracket assembly, a second ground anchor mounting bracket assembly and a concentric angle adjuster, wherein the first ground anchor mounting bracket assembly and the second ground anchor mounting bracket assembly are respectively fixedly installed on the vehicle floor at a distance from each other, both sides of the seat basin assembly are respectively fixedly installed on the first ground anchor mounting bracket assembly and the second ground anchor mounting bracket assembly, and the backrest assembly is rotatably installed on the seat basin assembly through the concentric angle adjuster.

[0009] Preferably, the electric folding and storage frame of the seat also includes a recliner unlocking bracket, a cable and a cable mounting bracket, wherein the cable has a relative cable input end and a cable output end, the recliner unlocking bracket is rotatably mounted on the concentric recliner and connected to the cable output end, and the cable mounting bracket is connected to the cable input end to drive the unlocking of the concentric recliner through the cable.

[0010] Preferably, the cam is rotatably mounted on the second anchor mounting bracket assembly.

[0011] Preferably, the second anchor mounting bracket assembly comprises an anchor mounting bracket and a motor mounting bracket, wherein the motor is fixedly mounted on the anchor mounting bracket via the motor mounting bracket.

[0012] Preferably, the cam mechanism also includes a cam mounting shaft and a cam return spring, wherein the cam mounting shaft is fixedly mounted on the motor mounting bracket, the cam is rotatably mounted on the cam mounting shaft, and the cam return spring is sleeved on the cam mounting shaft and connected to the cam to drive the cam to return to its locked state.

[0013] Preferably, the second anchor mounting bracket assembly further comprises a front stopper of a stationary gear disc, and the front stopper of the stationary gear disc and the cam abut against each other in a locked state, thereby locking the stationary gear disc.

[0014] Preferably, in the seat seating position, the backward movement tendency of the stationary gear plate during a front collision transmits force to the vehicle body through the cam, and the forward movement tendency of the stationary gear plate during a rear collision transmits force to the vehicle body through the stationary gear plate front stopper.

[0015] Preferably, the electric folding and storage frame of the seat also includes a ground anchor bracket cross tube fixedly connected to the second ground anchor bracket assembly, and the second ground anchor bracket assembly also includes a static gear plate flattening block fixedly mounted on the motor mounting bracket. When the seat is in the folded position, the upward movement path of the static gear plate is blocked by the static gear plate flattening block and the ground anchor bracket cross tube, and the downward movement path of the static gear plate relies on motor self-locking.

[0016] Preferably, the seat basin assembly has a rocker arm extending obliquely upward from the rear side. When the seat is in the folded position, the downward movement trend of the stationary gear plate during a front collision hits the gear plate flattening block through the stationary gear plate, and the rocker arm hits the cross tube of the anchor mounting bracket to form a triangular structure to transmit the force to the vehicle body.

[0017] According to the electric folding and storage frame of the seat of the present invention, the concentric folding function of the backrest is realized. At the same time, the cam abuts against the static gear plate when the seat is in the seating position and the folding position, which not only realizes the function of locking the backrest assembly, but also improves the locking strength. The cam locking mechanism is used to prevent the backrest assembly from losing its locking ability and becoming a free state, so that the electric folding and storage frame of the seat can use conventional medium and low strength angle adjusters, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The invention discloses an electrically foldable and storable seat frame according to a preferred embodiment of the present invention.

[0019] Figure 2 yes Figure 1 Schematic diagram of the structure of the cam locking mechanism.

[0020] Figure 3 yes Figure 2 A first side view of a double tooth plate mechanism.

[0021] Figure 4 yes Figure 2 A second side view of the double tooth plate mechanism.

[0022] Figure 5 yes Figure 2 A partial enlarged view of the double tooth plate mechanism.

[0023] Figure 6 Show Figure 1 The design position of the seat's electric folding storage frame.

[0024] Figure 7 yes Figure 6 The first partial enlargement.

[0025] Figure 8 yes Figure 6 The second partial enlargement of .

[0026] Figure 9-10 Show Figure 1 The seat's electric folding and stowage frame unlocks the first position with its empty travel.

[0027] Figure 11-Figure 12 Show Figure 1 The seat's electric folding and stowage frame has an empty travel to unlock the second position.

[0028] Fig.13 Show Figure 1 The third position is unlocked by the electric folding and stowage frame of the seat.

[0029] Figure 14-15 Show Figure 1 The seat is electrically folded to the first folding position of the storage frame.

[0030] Figure 16-Figure 17 Show Figure 1 The seat's electrically foldable storage frame has a second folding position.

[0031] Figure 18-19 Show Figure 1 The third folding position of the seat's electrically foldable storage frame.

[0032] Figure 20-21 Show Figure 1 The seat electrically folds to the first unfolded position of the storage frame.

[0033] Figure 22-Figure 23 Show Figure 1 The seat electrically folds to the storage frame's second unfolded position.

[0034] Figure 24-25 Show Figure 1 The seat electrically folds to the third unfolded position of the storage frame.

[0035] Figure 26-Figure 27 Show Figure 1 The seat is electrically folded and stowed and the frame is locked in the first position with no travel.

[0036] Figure 28-Figure 30 Show Figure 1 The seat is electrically folded and stowed into the frame and locked in the second position.

[0037] Fig.31 Show Figure 1 The seat is electrically folded and stowed and the frame is locked in the third position with no travel.

[0038] Fig.32 Seats showing seating position.

[0039] Fig.33 yes Fig.32 An enlarged view of area A1.

[0040] Fig.34 yes Fig.32 Analysis diagram of the X1 direction.

[0041] Fig.35 yes Fig.32 Analysis diagram of the -Y1 direction.

[0042] Fig.36 yes Fig.32 Motor side motion path analysis diagram.

[0043] Fig.37 The seats are shown in the folded position.

[0044] Fig.38 yes Fig.37 Magnified view of area A2.

[0045] Fig.39 yes Fig.37 Analysis diagram of the X2 direction.

[0046] Fig.40 yes Fig.37 Analysis diagram of the -Y2 direction. DETAILED DESCRIPTION

[0047] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings and described in detail.

[0048] like Figure 1 As shown, the electric folding and storage frame 000 of the seat according to a preferred embodiment of the present invention comprises a backrest assembly 100, a seat pan assembly 200, a left foot mounting bracket assembly 300, a right foot mounting bracket assembly 400 and a concentric angle adjuster 500, wherein the left foot mounting bracket assembly 300 and the right foot mounting bracket assembly 400 are fixedly installed on the vehicle floor at intervals from each other, the left and right sides of the seat pan assembly 200 are respectively fixedly installed on the left foot mounting bracket assembly 300 and the right foot mounting bracket assembly 400, and the backrest assembly 100 is rotatably installed on the seat pan assembly 200 through the concentric angle adjuster 500 on the left side. In addition, the electric folding and storage frame 000 of the seat comprises a foot mounting bracket transverse tube 2300, and its opposite ends are fixedly connected to the left foot mounting bracket assembly 300 and the right foot mounting bracket assembly 400. Furthermore, the bidet assembly 200 further includes a rocker arm 201 extending obliquely upward from the rear side of the bidet.

[0049] like Figure 1 As shown, according to the present embodiment, the electric folding and storage frame 000 of the seat further includes a recliner unlocking bracket 600, a cable 700 and a cable mounting bracket 800, wherein the cable 700 has a relative cable input end 701 and a cable output end 702, the recliner unlocking bracket 600 is rotatably mounted on the concentric recliner 500 and connected to the cable output end 702, and the cable mounting bracket 800 is mounted on the right side of the backrest assembly 100 and connected to the cable input end 701, thereby driving the unlocking of the concentric recliner 500 through the cable 700.

[0050] like Figure 1As shown, the electric folding and storage frame 000 of the seat according to the present embodiment also includes a backrest side panel assembly 900, a cam locking mechanism and a motor 1300, wherein the backrest side panel assembly 900 is fixedly mounted on the right side of the backrest assembly 100, the motor 1300 is fixedly mounted on the right foot mounting bracket assembly 400 through the motor mounting nut 1400 and connected to the backrest assembly 100 through the cam locking mechanism to realize the rotation of the backrest assembly 100, and the cam locking mechanism is mounted on the backrest side panel assembly 900 to provide a locking function. During a collision, the force of the luggage box of the trunk hitting the backrest directly acts on the concentric recliner 500 and the cam locking mechanism in the locked state, thereby assisting the concentric recliner 500 through the cam locking mechanism to prevent the backrest assembly 100 from losing its locking ability and becoming a free state. In this way, the electric folding and storage frame 000 of the seat according to the present invention can use conventional medium and low strength recliners, thereby reducing production costs. In this embodiment, the concentric recliner 500 is a low torque recliner of 1700 Nm. It should be understood that the lower the torque, the smaller the volume, the lower the cost, and the more favorable the spatial arrangement.

[0051] Combination Figure 2The cam locking mechanism includes a double-toothed plate mechanism and a cam mechanism, wherein the double-toothed plate mechanism includes a static toothed plate 1000 and a dynamic toothed plate 1500 superimposed and mounted on the backrest side plate assembly 900, and the cam mechanism includes a cam 1100 and a cam linkage bracket 1600 mounted on the right foot mounting bracket assembly 400, wherein the static toothed plate 1000 is fixedly mounted on the backrest side plate assembly 900, the dynamic toothed plate 1500 is rotatably mounted on the backrest side plate assembly 900 through the side plate mounting bolts 2000, the cam 1100 is rotatably mounted on the right foot mounting bracket assembly 400 through the cam mounting nut 1900, and the two ends of the cam linkage bracket 1600 are rotatably connected to the cam 1100 and the dynamic toothed plate 1500, so that the cam 1100 is driven by the dynamic toothed plate 1500 and the cam linkage bracket 1600, so that it conflicts with the static toothed plate 1000 in the initial locking state to achieve the function of locking the backrest assembly 100. In this embodiment, the right anchor mounting bracket assembly 400 includes an anchor mounting bracket 401 and a motor mounting bracket 403, wherein the motor 1300 is fixedly mounted on the anchor mounting bracket 401 through the motor mounting bracket 403. In this embodiment, the right anchor mounting bracket assembly 400 also includes a stationary gear plate flattening block 404, which is fixedly mounted on the motor mounting bracket 403. The cam mechanism also includes a cam mounting shaft 2200 and a cam return spring 1200, wherein the cam mounting shaft 2200 is fixedly mounted on the motor mounting bracket 403, the cam mounting nut 1900 is mounted on the cam mounting shaft 2200 to rotatably mount the cam 1100 on the cam mounting shaft 2200, and the cam return spring 1200 is sleeved on the cam mounting shaft 2200 and connected to the cam 1100 to drive the cam 1100 to return to its initial locking state. In this embodiment, the cam mechanism further includes a cam linkage bracket mounting bolt 1700 and a cam linkage bracket mounting nut 1800, wherein one end of the cam linkage bracket 1600 is connected to the cam 1100 via the cam linkage bracket mounting bolt 1700, and the other end of the cam linkage bracket 1600 is connected to the movable gear plate 1500 via the cam linkage bracket mounting nut 1800. In this embodiment, the cam mechanism further includes a cam washer 2100, which is disposed between the cam 1100 and the cam linkage bracket 1600 for the cam linkage bracket mounting bolt 1700 to pass through.

[0052] like Figure 3-Figure 4As shown, the backrest side plate assembly 900 includes a movable gear plate rear stop point 901 and a movable gear plate front stop point 902 that are spaced apart from each other, and the movable gear plate 1500 has a motion idle stroke of the stationary gear plate defined by the movable gear plate rear stop point 901 and the movable gear plate front stop point 902. The movable gear plate 1500 also has a cable connection point 1501 and a cam connection point 1502 that are spaced apart from each other, wherein the cable input end 701 of the cable 700 is connected to the cable connection point 1501 to unlock the opposite concentric adjuster 500, and the cam linkage bracket 1600 is connected to the cam connection point 1502. In addition, as shown in FIG. Figure 5 As shown, the movable toothed disc 1500 has four more teeth 1500a than the stationary toothed disc 1000, that is, the stationary toothed disc 1000 has four fewer teeth than the movable toothed disc 1500, so as to realize the motion idle stroke of the stationary toothed disc (the idle stroke without teeth on the stationary toothed disc). In this way, the motor gear output end 1302 of the motor 1300 is always meshed with the movable toothed disc 1500.

[0053] In the design position (initial locking position), such as Figure 6 As shown, the motor 1300 is fixed in the right foot mounting bracket assembly 400 through the motor mounting nut 1400, and the position of the motor does not change during the backrest flipping process. When the concentric recliner 500 is in the locked state, the recliner unlocking bracket 600 is fixed on the concentric recliner 500, and the cable output end 702 is hooked on the recliner unlocking bracket 600.

[0054] Figure 7-Figure 8 As shown, the movable toothed disc 1500 is mounted on the backrest side plate assembly 900 through the side plate mounting bolts 2000 and can rotate to a certain extent, and is always meshed with the motor gear output end 1302. The rear stop point 901 of the toothed disc is used as the initial stop point. The distance from the movable toothed disc to the front stop point 902 is the idle stroke of the static toothed disc. The cable input end 701 and the cam linkage bracket 1600 are fixedly linked with the movable toothed disc 1500. In the locked state, the static toothed disc 1000 welded on the backrest side plate assembly 900 does not mesh with the motor gear output end 1302 due to the lack of four teeth. The static toothed disc front stopper 402 and the cam 1100 lock the static toothed disc 1000 from moving forward and backward, and are used to withstand collision loads and protect the motor 1300.

[0055] The following is a brief description of the seat's idle travel unlocking process.

[0056] like Figure 9-10 As shown, the motor gear output end 1302 rotates forward, driving the constantly meshed movable toothed disc 1500 to move from the movable toothed disc rear stop point 901 to the movable toothed disc front stop point 902, driving the cable input end 701 harness to move in the direction of increasing elongation, while the cam linkage bracket 1600 drives the cam 1100 downward to start separating from the stationary toothed disc 1000. The stationary toothed disc 1000 remains in place, and the backrest maintains the designed position (initial locking position).

[0057] like Figure 11-Figure 12 As shown, the motor gear output end 1302 rotates forward, driving the constantly meshed movable toothed disc 1500 to rotate two teeth and then contact the movable toothed disc front stop point 902, the stationary toothed disc 1000 overlaps with the movable toothed disc 1500, the cable input end 701 harness reaches the maximum elongation, and at the same time, the cam linkage bracket 1600 drives the cam 1100 to break away from the contact with the stationary toothed disc 1000, and the subsequent movement of the stationary toothed disc 1000 backward is not restricted by the stop point. The stationary toothed disc 1000 remains stationary, and the backrest maintains the designed position (initial locking position).

[0058] like Fig.13 As shown, the increase in the extension of the cable input end 701 causes the extension of the cable output end 702 to decrease, until the recliner unlocking bracket 600 is driven to rotate upward around the center of the concentric recliner 500 to pull the concentric recliner 500 to unlock.

[0059] The following is a brief description of the seat folding process.

[0060] like Figure 14-15 As shown, the motor gear output end 1302 rotates forward, because the movable toothed disc 1500 relies on the movable toothed disc front stop point 902 on the backrest side plate assembly 900 to push the backrest to rotate and fold around the center of the tooth. When the movable toothed disc moves to the front stop point 902, the motor gear output end 1302 rotates one tooth and then meshes with the teeth of the static toothed disc 1000. At this time, the motor gear output end 1302 meshes with the movable toothed disc 1500 and the static toothed disc 1000 at the same time. When the movable toothed disc 1500 rotates downward, the cam 1100 is pushed away from the static toothed disc 1000 through the cam linkage bracket 1600, and the teeth of the motor gear output end 1302 subsequently move in the overlapping area of ​​the teeth of the movable toothed disc 1500 and the static toothed disc 1000.

[0061] like Figure 16-Figure 17 As shown, the motor gear output end 1302 drives the overlapping teeth of the movable toothed disc 1500 and the stationary toothed disc 1000 in a positive rotation. The cable harness at the cable input end 701 always maintains the maximum extension, at which time the concentric angle adjuster 500 is always in an unlocked state, and the cam linkage bracket 1600 follows the movement of the movable toothed disc 1500, so that the cam 1100 is further away from the stationary toothed disc 1000, and there is no motion interference, so that the backrest can rotate and fold.

[0062] like Figure 18-19 As shown, when the motor gear output end 1302 drives the movable gear plate 1500 and the stationary gear plate 1000 to the penultimate tooth of the tooth stroke, the travel stop point of the frame limits the motor gear output end 1302 from continuing to rotate, and the backrest reaches the flat position. Fig.17At the lowest point shown, the cam 1100 swings downward to the lowest position, and then the cam connection point 1502 swings backward to cause the cam 1100 to move upward to the folded locking position.

[0063] The following is a brief description of the seat deployment process.

[0064] like Figure 20-21 As shown, the motor gear output end 1302 reverses and drives the overlapping teeth of the movable gear plate 1500 and the static gear plate 1000, and the static gear plate 1000 directly drives the backrest to move backward. The cam 1100, driven by the cam linkage bracket 1600, begins to move away from the static gear plate 1000.

[0065] like Figure 22-Figure 23 As shown, the motor gear output end 1302 reverses and drives the overlapping teeth of the movable toothed disc 1500 and the stationary toothed disc 1000 to continue to move backward. The cable harness at the cable input end 701 still maintains the maximum extension, the concentric angle adjuster 500 is always in the unlocked state, the cam linkage bracket 1600 follows the movement of the movable toothed disc 1500, and the cam 1100 reaches the farthest end and slowly approaches the stationary toothed disc 1000. At this time, the backrest continues to rotate backward.

[0066] like Figure 24-25 As shown, the motor gear output end 1302 reverses, and after the movable gear plate 1500 and the static gear plate 1000 rotate through the last overlapping tooth, the static gear plate 1000 disengages, and subsequently the motor gear output end 1302 only drives the movable gear plate 1500, and the cam 1100 continues to approach the static gear plate 1000 under the drive of the cam linkage bracket 1600.

[0067] The following is a brief introduction to the seat's idle travel locking process.

[0068] like Figure 26-Figure 27 As shown, the motor gear output end 1302 reverses, driving the constantly meshed movable toothed disc 1500 to move from the movable toothed disc front stop point 902 to the movable toothed disc rear stop point 901, driving the cable input end 701 harness to move in the direction of shortening the elongation, and at the same time, the cam linkage bracket 1600 drives the cam 1100 upward to move toward the static toothed disc 1000 with a contact tendency. At this time, the static toothed disc 1000 remains stationary, and the backrest still has a travel of 3 teeth from the designed initial position.

[0069] like Figure 28-Figure 29 As shown, the motor gear output end 1302 reverses, driving the constantly meshing movable gear plate 1500 to rotate 2 teeth and then contact the movable gear plate rear stop point 901, and the cable input end 701 harness reaches the shortest extension of the designed state. At the same time, the cam linkage bracket 1600 drives the cam 1100 upwards and is just below the stationary gear plate 1000 (see Fig.30), and then continue to drive the backrest to rotate backward one tooth around the rotation center of the backrest. During the rotation, the cam 1100 will contact (interfere) with the lower end of the static gear plate 1000 in advance, and the waist groove 1600a of the cam linkage bracket 1600 provides a return stroke for the backrest assembly (the contact between the cam 1100 and the static gear plate 1000 makes the cam 1100 unable to rotate upward, and the cam linkage bracket 1600 provides a rotation stroke through the path defined by the waist groove), so that the backrest can continue to return normally (see Fig.30 ), then the stationary gear plate 1000 reaches the position where the front stopper 402 of the stationary gear plate is fully in contact, the backrest movement stops, and the cam 1100 obtains upward recovery space (see Fig.30 ), and the cam is driven by the cam return spring 1200 to return to the designed initial position and lock with the stationary gear plate 1000 (see Fig.30 ), the seat returns to normal use.

[0070] like Fig.31 As shown, the elongation of the cable input end 701 decreases, resulting in an increase in the extension of the cable output end 702, causing the recliner unlocking bracket 600 to rotate back to the designed position (locked position) under the driving force of the concentric recliner 500 return spring, the concentric recliner 500 is locked, and the seat reaches a safe use position.

[0071] In such Fig.32 The seat seating position shown in FIG. 1 shows the motor side locking in area A1. Fig.33 As shown, at this time, the stationary gear plate 1000 is in the middle, and the stationary gear plate 1000 is locked by the stationary gear plate front stopper 402 and the cam 1100 so that it cannot move forward and backward, and the hard contact is used to withstand the collision condition.

[0072] like Fig.34 and Fig.35 As shown, in the case of a front collision, the stationary gear plate 1000 tends to move backward and hits the cam 1100, which is fixed to the right ground anchor mounting bracket assembly 400 through the side plate mounting bolts 2000 to transfer force to the vehicle body, and the other side is transferred to the vehicle body through the manual concentric angle adjuster 500. In the case of a rear collision, the stationary gear plate 1000 tends to move forward and hits the stationary gear plate front stopper 402, which transfers force to the vehicle body through the right ground anchor mounting bracket assembly 400, and the other side is transferred to the vehicle body through the manual concentric angle adjuster 500.

[0073] Combine the following Fig.36The motion path of the motor side is analyzed. When the static gear plate 1000 is in the seating position, the static gear plate front stopper 402 blocks the forward motion path of the static gear plate 1000 to prevent the backrest side panel assembly 900 from opening infinitely backward. The cam 1100 is pushed downward by the cam linkage bracket 1600, so that the static gear plate 1000 obtains space for backward motion, and the backrest side panel assembly 900 can be smoothly folded.

[0074] In such Fig.37 The seat is folded in the position shown below. Fig.38 The motion path of the motor side is analyzed. When the static gear plate 1000 is in the folded position, the static gear plate flattening block 404 and the horizontal tube 2300 of the foot mounting bracket block the upward motion path of the static gear plate 1000 to prevent the backrest side panel assembly 900 from infinitely closing forward. The downward motion path of the static gear plate 1000 is unlimited and is self-locked by the motor 1300.

[0075] like Fig.39 and Fig.40 As shown, when the front and rear collision occurs, the center of gravity of the seat is low after it is turned flat, and the risk caused by the collision force in the X direction is small. The weight of the front collision does positive work, and the static gear plate 1000 has a slight downward movement tendency, and the static gear plate 1000 hits the gear plate flattening block 404, and the rocker arm 201 hits the cross tube 2300 of the anchor mounting bracket to form a triangular structure to transmit the force to the vehicle body. The weight of the rear collision does negative work, and the static gear plate 1000 has a slight upward movement tendency, and gravity offsets the impact force.

[0076] The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. The above embodiment of the present invention can also be modified in various ways. That is, all simple, equivalent changes and modifications made according to the claims and the description of the present invention fall within the scope of protection of the claims of the present invention. The contents not described in detail in the present invention are all conventional technical contents.

Claims

1. A seat electrically foldable storage frame, characterized in that: The electric folding and storage frame of the seat includes a backrest assembly, a cam locking mechanism and a motor, wherein: The cam locking mechanism includes a double-tooth plate mechanism and a cam mechanism, and the motor is connected to the backrest assembly through the double-tooth plate mechanism to realize the rotation of the backrest assembly; The double tooth plate mechanism comprises a stacked stationary tooth plate and a movable tooth plate, wherein the stationary tooth plate is fixedly mounted on the backrest assembly, and the movable tooth plate is rotatably mounted on the backrest assembly; The cam mechanism includes a cam and a cam linkage bracket, wherein the two ends of the cam linkage bracket are rotatably connected to the cam and the movable gear plate, so that the cam linkage bracket is driven by the movable gear plate and the cam is driven to contact with the static gear plate in a locked state to achieve the function of locking the backrest assembly.

2. The electric folding and storage frame of the seat according to claim 1, characterized in that: The cam linkage bracket has a waist groove for providing a return stroke of the backrest assembly.

3. The electric folding and storage frame of the seat according to claim 1, characterized in that: The backrest assembly is provided with a rear stop point of a movable gear plate and a front stop point of the movable gear plate which are spaced apart from each other, and the movable gear plate has a motion idle stroke of the stationary gear plate defined by the rear stop point of the movable gear plate and the front stop point of the movable gear plate.

4. The electrically foldable and stowable seat frame according to claim 3, characterized in that: The motor gear output end of the motor is constantly meshed with the moving gear plate, and the stationary gear plate has a number of teeth less than the moving gear plate to achieve the idle travel of the stationary gear plate.

5. The electrically foldable and stowable seat frame according to claim 1, characterized in that: The electric folding and storage frame of the seat also includes a seat basin assembly, a first anchor mounting bracket assembly, a second anchor mounting bracket assembly and a concentric angle adjuster, wherein the first anchor mounting bracket assembly and the second anchor mounting bracket assembly are fixedly installed on the vehicle floor at a distance from each other, both sides of the seat basin assembly are respectively fixedly installed on the first anchor mounting bracket assembly and the second anchor mounting bracket assembly, and the backrest assembly is rotatably installed on the seat basin assembly through the concentric angle adjuster.

6. The electrically foldable and stowable seat frame according to claim 5, characterized in that: The electric folding and storage frame of the seat also includes a recliner unlocking bracket, a cable and a cable mounting bracket, wherein the cable has a relative cable input end and a cable output end, the recliner unlocking bracket is rotatably mounted on the concentric recliner and connected to the cable output end, and the cable mounting bracket is connected to the cable input end to drive the unlocking of the concentric recliner through the cable.

7. The electrically foldable and stowable seat frame according to claim 5, characterized in that: The cam is rotatably mounted on the second foot mounting bracket assembly.

8. The electrically foldable and stowable seat frame according to claim 7, characterized in that: The second anchor mounting bracket assembly includes an anchor mounting bracket and a motor mounting bracket, wherein the motor is fixedly mounted on the anchor mounting bracket via the motor mounting bracket.

9. The electrically foldable and storable seat frame according to claim 8, characterized in that: The cam mechanism also includes a cam mounting shaft and a cam return spring, wherein the cam mounting shaft is fixedly mounted on the motor mounting bracket, the cam is rotatably mounted on the cam mounting shaft, and the cam return spring is sleeved on the cam mounting shaft and connected to the cam to drive the cam to return to its locked state.

10. The electrically foldable and stowable seat frame according to claim 8, characterized in that: The second anchor mounting bracket assembly also includes a front stopper of a stationary gear plate. The front stopper of the stationary gear plate and the cam abut against each other in a locked state, and the stationary gear plate is locked.

11. The electrically foldable and stowable seat frame according to claim 10, characterized in that: In the seat seating position, the backward movement trend of the stationary gear plate during a front impact transmits force to the vehicle body through the cam, and the forward movement trend of the stationary gear plate during a rear impact transmits force to the vehicle body through the stationary gear plate front block.

12. The electrically foldable and stowable seat frame according to claim 8, characterized in that: The electric folding and storage frame of the seat also includes a ground mounting bracket cross tube fixedly connected to the second ground mounting bracket assembly, and the second ground mounting bracket assembly also includes a static gear plate flattening block fixedly mounted on the motor mounting bracket. When the seat is in the folded position, the upward movement path of the static gear plate is blocked by the static gear plate flattening block and the ground mounting bracket cross tube, and the downward movement path of the static gear plate relies on the motor self-locking.

13. The electrically foldable and stowable seat frame according to claim 12, characterized in that: The seat basin assembly has a rocker arm extending obliquely upward from the rear side. When the seat is in the folded position, the downward movement trend of the static gear plate during a front collision hits the gear plate flattening block through the static gear plate, and the rocker arm hits the cross tube of the anchor mounting bracket to form a triangular structure to transmit the force to the vehicle body.

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