A seat electric folding storage framework

Abstract

The application relates to a seat electric folding storage framework, a cam locking mechanism comprising a double-toothed plate mechanism and a cam mechanism, the double-toothed plate mechanism comprising a static toothed disc and a dynamic toothed disc which are stacked, the static toothed disc being fixedly installed on a backrest assembly, and the dynamic toothed disc being rotatably installed on the backrest assembly; the cam mechanism comprising a cam and a cam linkage support, two ends of the cam linkage support being rotatably connected with the cam and the dynamic toothed disc respectively, so that the cam linkage support is driven by the dynamic toothed disc and drives the cam to abut against the static toothed disc in a locking state to realize the function of locking the backrest assembly. According to the seat electric folding storage framework, the function of concentric folding of the backrest is realized, the cam abuts against the static toothed disc in the seat riding position and the folding position state, the function of locking the backrest assembly is realized, the locking strength is improved, the backrest assembly is prevented from losing the locking ability and becoming a free state through the cam locking mechanism, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to a vehicle seat, more particularly to a seat electric folding storage framework. BACKGROUND

[0002] It is known that the backrest of a vehicle seat is rotatably mounted on the seat pan by a recliner, and a motor is connected with the recliner to drive the backrest to fold. During a collision, the force of the luggage in the trunk impacting 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

[0003] In order to solve the problem of high cost in the prior art, the present application provides a seat electric folding storage framework.

[0004] The seat electric folding storage framework according to the present application 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, the motor is connected with the backrest assembly through the double-tooth plate mechanism to realize the rotation of the backrest assembly; the double-tooth plate mechanism comprises a static tooth disc and a dynamic tooth disc stacked, wherein the static tooth disc is fixedly mounted on the backrest assembly, and the dynamic tooth disc 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 with the cam and the dynamic tooth disc respectively, so that the cam linkage bracket is driven by the dynamic tooth disc to drive the cam to abut against the static tooth disc in a locked state to realize the function of locking the backrest assembly.

[0005] Preferably, the cam linkage bracket has a waist groove providing a backrest assembly recovery stroke.

[0006] Preferably, the backrest assembly has a dynamic tooth disc rear stop point and a dynamic tooth disc front stop point spaced apart from each other, and the dynamic tooth disc has a static tooth disc movement idle stroke defined by the dynamic tooth disc rear stop point and the dynamic tooth disc front stop point.

[0007] Preferably, the motor gear output end of the motor is always engaged with the dynamic tooth disc, and the static tooth disc is less than the dynamic tooth disc by a number of teeth to realize the movement idle stroke of the static tooth disc.

[0008] Preferably, the seat electric folding storage framework further comprises a seat pan assembly, a first ground anchor mounting bracket assembly, a second ground anchor mounting bracket assembly and a concentric recliner, wherein the first ground anchor mounting bracket assembly and the second ground anchor mounting bracket assembly are fixedly mounted on the vehicle floor spaced apart from each other, the seat pan assembly is fixedly mounted on the first ground anchor mounting bracket assembly and the second ground anchor mounting bracket assembly on both sides respectively, and the backrest assembly is rotatably mounted on the seat pan assembly through the concentric recliner.

[0009] Preferably, the seat electric folding storage framework further comprises an angle adjuster unlocking support, a cable and a cable mounting support, wherein the cable has opposite cable input end and cable output end, the angle adjuster unlocking support is rotatably mounted on the concentric angle adjuster and connected with the cable output end, and the cable mounting support is connected with the cable input end to drive the unlocking of the concentric angle adjuster through the cable.

[0010] Preferably, the cam is rotatably mounted on the second foundation mounting support assembly.

[0011] Preferably, the second foundation mounting support assembly comprises a foundation mounting support and a motor mounting support, wherein the motor is fixedly mounted on the foundation mounting support through the motor mounting support.

[0012] Preferably, the cam mechanism further comprises a cam mounting shaft and a cam return spring, wherein the cam mounting shaft is fixedly mounted on the motor mounting support, the cam is rotatably mounted on the cam mounting shaft, and the cam return spring is sleeved on the cam mounting shaft and connected with the cam to drive the cam to return to the locking state.

[0013] Preferably, the second foundation mounting support assembly further comprises a static tooth disc front stopper, and the static tooth disc front stopper and the cam are in abutment in the locking state to lock the static tooth disc.

[0014] Preferably, in the seat riding position, the rearward movement tendency of the static tooth disc in the front impact is transmitted to the vehicle body through the cam, and the forward movement tendency of the static tooth disc in the rear impact is transmitted to the vehicle body through the static tooth disc front stopper.

[0015] Preferably, the seat electric folding storage framework further comprises a foundation mounting support cross pipe fixedly connected to the second foundation mounting support assembly, and the second foundation mounting support assembly further comprises a static tooth disc folding stopper fixedly mounted on the motor mounting support, wherein, in the seat folding position, the upward movement path of the static tooth disc is blocked by the static tooth disc folding stopper and the foundation mounting support cross pipe, and the downward movement path of the static tooth disc relies on the motor self-locking.

[0016] Preferably, the seat pan assembly has a rocker arm extending obliquely upward from the rear side, and in the seat folding position, the downward movement tendency of the static tooth disc in the front impact is transmitted to the vehicle body through the static tooth disc hitting the tooth disc folding stopper and forming a triangular structure by the rocker arm hitting the foundation mounting support cross pipe.

[0017] According to the seat electric folding storage framework of the present application, the backrest concentric folding function is realized, the cam is in abutment with the static tooth disc in the seat riding position and the folding position, not only realizing the function of locking the backrest assembly, but also improving the locking strength, thereby preventing the backrest assembly from losing the locking ability and becoming a free state through the cam locking mechanism, so that the seat electric folding storage framework can select a conventional medium-low strength angle adjuster, thereby reducing the production cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a seat power folding frame according to a preferred embodiment of the present application.

[0019] Figure 2 is a structure diagram of the cam locking mechanism of Figure 1

[0020] Figure 3 is a first side view of the double rack mechanism of Figure 2

[0021] Figure 4 is a second side view of the double rack mechanism of Figure 2

[0022] Figure 5 is a partial enlarged view of the double rack mechanism of Figure 2

[0023] Figure 6 shows a design position of the seat power folding frame of Figure 1

[0024] Figure 7 is a first partial enlarged view of Figure 6

[0025] Figure 8 is a second partial enlarged view of Figure 6

[0026] Figures 9-10 shows an idle stroke unlocking first position of the seat power folding frame of Figure 1

[0027] Figures 11-12 shows an idle stroke unlocking second position of the seat power folding frame of Figure 1

[0028] Figure 13 shows an idle stroke unlocking third position of the seat power folding frame of Figure 1

[0029] Figures 14-15 shows a first folding position of the seat power folding frame of Figure 1

[0030] Figures 16-17 shows a second folding position of the seat power folding frame of Figure 1

[0031] Figures 18-19 shows a third folding position of the seat power folding frame of Figure 1

[0032] ​​​​​​​​​​​​​Figures 20-21 A first deployed position of the seat power folding stowage frame is shown. Figure 1 A second deployed position of the seat power folding stowage frame is shown.

[0033] Figures 22-23 A third deployed position of the seat power folding stowage frame is shown. Figure 1 A second deployed position of the seat power folding stowage frame is shown.

[0034] Figures 24-25 A third deployed position of the seat power folding stowage frame is shown. Figure 1 A second deployed position of the seat power folding stowage frame is shown.

[0035] Figures 26-27 A first position of the seat power folding stowage frame with free travel latch is shown. Figure 1 A second position of the seat power folding stowage frame with free travel latch is shown.

[0036] Figures 28-30 A third position of the seat power folding stowage frame with free travel latch is shown. Figure 1 A second position of the seat power folding stowage frame with free travel latch is shown.

[0037] Figure 31 A third position of the seat power folding stowage frame with free travel latch is shown. Figure 1 A second position of the seat power folding stowage frame with free travel latch is shown.

[0038] Figure 32 A seat in a seating position is shown.

[0039] Figure 33 is an enlarged view of area A1 of Figure 32

[0040] Figure 34 is an analysis diagram of the X1 direction of Figure 32

[0041] Figure 35 is an analysis diagram of the -Y1 direction of Figure 32

[0042] Figure 36 is a motor side motion path analysis diagram of Figure 32

[0043] Figure 37 A seat in a folded position is shown.

[0044] Figure 38 is an enlarged view of area A2 of Figure 37

[0045] Figure 39 Figure 37 is an analysis diagram of the X2 direction of

[0046] Figure 40 Figure 37 is an analysis diagram of the -Y2 direction of DETAILED DESCRIPTION ​​​​​​​

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

[0048] like Figure 1 As shown, a preferred embodiment of the electric folding and storage frame 000 of the present invention includes a backrest assembly 100, a seat basin assembly 200, a left footrest mounting bracket assembly 300, a right footrest mounting bracket assembly 400, and a concentric angle adjuster 500. The left footrest mounting bracket assembly 300 and the right footrest mounting bracket assembly 400 are fixedly mounted on the vehicle floor at a distance from each other. The left and right sides of the seat basin assembly 200 are respectively mounted and fixed on the left footrest mounting bracket assembly 300 and the right footrest mounting bracket assembly 400. The backrest assembly 100 is rotatably mounted on the seat basin assembly 200 via the concentric angle adjuster 500 on the left side. Furthermore, the electric folding and storage frame 000 includes a footrest mounting bracket horizontal tube 2300, whose opposite ends are fixedly connected to the left footrest mounting bracket assembly 300 and the right footrest mounting bracket assembly 400. Furthermore, the seat assembly 200 also includes a rocker arm 201 that extends obliquely upward from the rear side of the seat.

[0049] like Figure 1 As shown, the electric folding and storage frame 000 of the seat according to this embodiment also includes an adjuster unlocking bracket 600, a cable 700, and a cable mounting bracket 800. The cable 700 has a cable input end 701 and a cable output end 702. The adjuster unlocking bracket 600 is rotatably mounted on the concentric adjuster 500 and connected to the cable output end 702. 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 adjuster 500 through the cable 700.

[0050] like Figure 1As shown, the seat electric folding storage framework 000 according to the present embodiment further comprises a backrest side plate assembly 900, a cam locking mechanism and a motor 1300, wherein the backrest side plate assembly 900 is fixedly installed on the right side of the backrest assembly 100, the motor 1300 is fixedly installed on the right foot mounting bracket assembly 400 through a motor mounting nut 1400 and is connected with the backrest assembly 100 through the cam locking mechanism to realize the rotation of the backrest assembly 100, and the cam locking mechanism is installed on the backrest side plate assembly 900 to provide a locking function. During the collision process, the force of the luggage of the trunk impacting the backrest directly acts on the concentric angle adjuster 500 and the cam locking mechanism in the locked state, thereby assisting the concentric angle adjuster 500 to prevent the backrest assembly 100 from losing the locking ability and becoming a free state through the cam locking mechanism. In this way, the seat electric folding storage framework 000 according to the present application can select a conventional low-intensity angle adjuster, thereby reducing the production cost. In the present embodiment, the concentric angle adjuster 500 is a low-torque angle adjuster with a torque of 1700 Nm. It should be understood that the lower the torque, the smaller the volume, the lower the cost, and the more advantageous the space arrangement.

[0051] In combination Figure 2The cam locking mechanism comprises a double-toothed plate mechanism and a cam mechanism. The double-toothed plate mechanism comprises a static toothed plate 1000 and a dynamic toothed plate 1500 which are stacked and installed on the backrest side plate assembly 900. The cam mechanism comprises a cam 1100 and a cam linkage bracket 1600 which are installed on the right foot mounting bracket assembly 400. The static toothed plate 1000 is fixedly installed on the backrest side plate assembly 900. The dynamic toothed plate 1500 is rotatably installed on the backrest side plate assembly 900 by means of the side plate mounting bolt 2000. The cam 1100 is rotatably installed on the right foot mounting bracket assembly 400 by means of the cam mounting nut 1900. The two ends of the cam linkage bracket 1600 are rotatably connected to the cam 1100 and the dynamic toothed plate 1500 respectively. Thus, the cam 1100 is driven by the dynamic toothed plate 1500 and the cam linkage bracket 1600 to abut against 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 foot mounting bracket assembly 400 comprises a foot mounting bracket 401 and a motor mounting bracket 403. The motor 1300 is fixedly installed on the foot mounting bracket 401 by means of the motor mounting bracket 403. In this embodiment, the right foot mounting bracket assembly 400 further comprises a static toothed plate flip stopper 404 which is fixedly installed on the motor mounting bracket 403. The cam mechanism further comprises a cam mounting shaft 2200 and a cam return spring 1200. The cam mounting shaft 2200 is fixedly installed on the motor mounting bracket 403. The cam mounting nut 1900 is installed on the cam mounting shaft 2200 to rotatably install the cam 1100 on the cam mounting shaft 2200. 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 the initial locking state. In this embodiment, the cam mechanism further comprises a cam linkage bracket mounting bolt 1700 and a cam linkage bracket mounting nut 1800. One end of the cam linkage bracket 1600 is connected to the cam 1100 by means of the cam linkage bracket mounting bolt 1700. The other end of the cam linkage bracket 1600 is connected to the dynamic toothed plate 1500 by means of the cam linkage bracket mounting nut 1800. In this embodiment, the cam mechanism further comprises a cam washer 2100 which is arranged between the cam 1100 and the cam linkage bracket 1600 for the cam linkage bracket mounting bolt 1700 to pass through.

[0052] As Figures 3-4As shown, the backrest side plate assembly 900 includes the movable gear disc rear stop point 901 and the movable gear disc front stop point 902 which are spaced apart from each other, the movable gear disc 1500 has a static gear disc movement idle stroke which is defined by the movable gear disc rear stop point 901 and the movable gear disc front stop point 902. The movable gear disc 1500 also has the cable connection point 1501 and the cam connection point 1502 which 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 side concentric angle adjuster 500, and the cam linkage bracket 1600 is connected to the cam connection point 1502. In addition, as shown Figure 5 As shown, the movable gear disc 1500 has four more teeth 1500a than the static gear disc 1000, i.e. the static gear disc 1000 has four fewer teeth than the movable gear disc 1500, to achieve the static gear disc movement idle stroke (the idle stroke without teeth on the static gear disc). In this way, the motor gear output end 1302 of the motor 1300 is always engaged with the movable gear disc 1500.

[0053] In the design position (initial locking position), as shown 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 motor position does not change during the backrest overturning process. When the concentric angle adjuster 500 is in the locked state, the angle adjuster unlocking bracket 600 is fixed on the concentric angle adjuster 500, and the cable output end 702 is hooked on the angle adjuster unlocking bracket 600.

[0054] Figures 7-8 As shown, the movable gear disc 1500 is installed on the backrest side plate assembly 900 through the side plate mounting bolt 2000 and can rotate to a certain extent, and is always engaged with the motor gear output end 1302, the gear disc rear stop point 901 serves as the initial stop point, the distance of the movable gear disc movement to the front stop point 902 is the idle stroke of the static gear disc, and the cable input end 701 and the cam linkage bracket 1600 are fixedly linked with the movable gear disc 1500. In the locked state, the static gear disc 1000 welded on the backrest side plate assembly 900 does not engage with the motor gear output end 1302 due to the lack of four teeth, and the static gear disc front block 402 and the cam 1100 lock the static gear disc 1000 from moving forward and backward, which is used to bear the impact load and protect the motor 1300.

[0055] The seat idle stroke unlocking process is briefly introduced below.

[0056] As shown Figures 9-10 As shown, the motor gear output end 1302 rotates in the forward direction, drives the always-engaged movable gear disc 1500 to move from the movable gear disc rear stop point 901 to the movable gear disc front stop point 902, drives the cable input end 701 to move in the direction of the elongation growth, and at the same time, the cam linkage bracket 1600 drives the cam 1100 to start to separate from the static gear disc 1000. The static gear disc 1000 does not move, and the backrest remains in the design position (initial locking position).

[0057] like Figures 11-12 As shown, the motor gear output end 1302 rotates forward, driving the constantly meshed moving gear disk 1500 to rotate two teeth before contacting the front stop point 902 of the moving gear disk. The tooth profile of the stationary gear disk 1000 overlaps with that of the moving gear disk 1500, and the cable input end 701 reaches its maximum extension. At the same time, the cam linkage bracket 1600 drives the cam 1100 to disengage from the stationary gear disk 1000, and there is no stop point to restrict the subsequent backward movement of the stationary gear disk 1000. The stationary gear disk 1000 remains stationary, and the backrest maintains its designed position (initial locked position).

[0058] like Figure 13 As shown, the increased elongation of the cable input end 701 causes the reduced elongation of the cable output end 702 until the angle adjuster unlocking bracket 600 rotates upward around the center of the concentric angle adjuster 500, pulling the concentric angle adjuster 500 to unlock.

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

[0060] like Figures 14-15 As shown, the motor gear output end 1302 rotates forward. Because the moving gear disk 1500 relies on the hard contact of the moving gear disk front stop 902 on the backrest side plate assembly 900 to push the backrest to rotate and fold around the center of the teeth, when the moving gear disk moves to the front stop 902, the motor gear output end 1302 rotates one tooth and then meshes with the teeth of the stationary gear disk 1000. At this time, the motor gear output end 1302 meshes with both the moving gear disk 1500 and the stationary gear disk 1000. When the moving gear disk 1500 rotates downward, the cam 1100 is pushed away from the stationary gear disk 1000 through the cam linkage bracket 1600. Subsequently, the teeth of the motor gear output end 1302 move in the overlapping area of ​​the teeth of the moving gear disk 1500 and the stationary gear disk 1000.

[0061] like Figures 16-17 As shown, the motor gear output end 1302 rotates forward, driving the overlapping teeth of the moving gear plate 1500 and the stationary gear plate 1000. The cable input end 701 keeps the wire harness at its maximum extension. At this time, the concentric angle adjuster 500 is always in the unlocked state. The cam linkage bracket 1600 moves with the moving gear plate 1500, making the cam 1100 further away from the stationary gear plate 1000. There is no motion interference, allowing the backrest to rotate and fold.

[0062] like Figures 18-19 As shown, when the motor gear output end 1302 rotates forward, driving the moving gear plate 1500 and the stationary gear plate 1000 to the penultimate tooth of their travel, the frame's travel stop restricts the motor gear output end 1302 from continuing to rotate, and the backrest reaches the flat position. During the seat folding process, when the cam connection point 1502 of the moving gear plate 1500 is in the... Figure 17At the lowest point shown, cam 1100 swings downward to the lowest position, and then the backward swing of cam connection point 1502 causes cam 1100 to return upward to the flipped locked position.

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

[0064] like Figures 20-21 As shown, the motor gear output end 1302 reverses and drives the overlapping teeth of the moving gear disk 1500 and the stationary gear disk 1000. The stationary gear disk 1000 directly drives the backrest to move backward. Under the drive of the cam linkage bracket 1600, the cam 1100 begins to move away from the stationary gear disk 1000.

[0065] like Figures 22-23 As shown, the motor gear output end 1302 reverses to drive the overlapping teeth of the moving gear plate 1500 and the stationary gear plate 1000 to continue backward. The cable input end 701 remains at its maximum extension, the concentric angle adjuster 500 is always in the unlocked state, the cam linkage bracket 1600 follows the movement of the moving gear plate 1500, and after the cam 1100 reaches its farthest end, it begins to slowly approach the stationary gear plate 1000. At this time, the backrest continues to rotate backward.

[0066] like Figures 24-25 As shown, the motor gear output end 1302 reverses. After the moving gear plate 1500 and the stationary gear plate 1000 rotate past the last overlapping tooth, the stationary gear plate 1000 disengages. Subsequently, the motor gear output end 1302 only drives the moving gear plate 1500. Under the drive of the cam linkage bracket 1600, the cam 1100 continues to approach the stationary gear plate 1000.

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

[0068] like Figures 26-27 As shown, the motor gear output end 1302 reverses, driving the constantly meshed moving gear disk 1500 to move from the front stop point 902 to the rear stop point 901, causing the cable input end 701 wire harness to move in the direction of shortening. At the same time, the cam linkage bracket 1600 drives the cam 1100 upward, tending to contact the stationary gear disk 1000. At this time, the stationary gear disk 1000 remains stationary, and the backrest still has a travel distance of 3 teeth from its initial design position.

[0069] like Figures 28-29 As shown, the motor gear output end 1302 reverses, causing the constantly meshed moving gear disk 1500 to rotate two teeth before contacting the rear stop point 901 of the moving gear disk. The cable input end 701 wire harness reaches the minimum elongation designed for this state. At the same time, the cam linkage bracket 1600 moves upward, causing the cam 1100 to be exactly below the stationary gear disk 1000 (see...). Figure 30), then continue to drive the backrest to rotate 1 tooth around the backrest rotation center, the cam 1100 will contact (i.e. interfere) with the lower end of the static tooth plate 1000 in the middle of the rotation, the waist groove 1600a of the cam linkage bracket 1600 provides the backrest assembly return stroke (the contact between the cam 1100 and the static tooth plate 1000 makes the cam 1100 unable to rotate upward, and the path defined by the waist groove of the cam linkage bracket 1600 provides the stroke of the rotation), so that the backrest can continue to normally return (see Figure 30 ), then the static tooth plate 1000 reaches the fully contacted position with the static tooth plate front stopper 402, the backrest motion stops, the cam 1100 obtains the upward return space (see Figure 30 ), and drives the cam to return to the designed initial position and lock with the static tooth plate 1000 through the cam return spring 1200 (see Figure 30 ), and the seat returns to the normal use state.

[0070] As shown in Figure 31 , the cable input end 701 reduces the extension amount, resulting in an increase in the extension amount of the cable output end 702, so that the recliner unlocking bracket 600 is rotated back to the designed position (locked position) under the driving force of the recliner return spring of the concentric recliner 500, the concentric recliner 500 is locked, and the seat reaches the safe use position.

[0071] In the seat riding position as shown in Figure 32 , the area A1 therein shows the motor side locking, as shown in Figure 33 , at this time the static tooth plate 1000 is in the middle, and the static tooth plate 1000 is locked by the static tooth plate front stopper 402 and the cam 1100 and cannot move forward and backward, and the hard contact bears the collision working condition.

[0072] As shown in Figure 34 and Figure 35 , in the front collision, the static tooth plate 1000 has a tendency to move backward and hits the cam 1100, and the force is transmitted to the vehicle body by the cam 1100 fixed on the right foot mounting bracket assembly 400 through the side plate mounting bolt 2000, and the other side is transmitted to the vehicle body through the manual concentric recliner 500. In the rear collision, the static tooth plate 1000 has a tendency to move forward and hits the static tooth plate front stopper 402, and the force is transmitted to the vehicle body by the static tooth plate front stopper 402 through the right foot mounting bracket assembly 400, and the other side is transmitted to the vehicle body through the manual concentric recliner 500.

[0073] The following will be described in combination with Figure 36The motion path of the motor side is analyzed. When the stationary gear plate 1000 is in the seating position, the forward motion path of the stationary gear plate 1000 is blocked by the front stop 402 of the stationary gear plate, preventing the backrest side panel assembly 900 from opening indefinitely backward. The cam linkage bracket 1600 pushes the cam 1100 downward, and the stationary gear plate 1000 obtains the space to move backward, so that the backrest side panel assembly 900 can be folded smoothly.

[0074] In such Figure 37 The seat folding position shown below, combined with Figure 38 The motion path on the motor side is analyzed. When the stationary gear disc 1000 is in the folded position, its upward motion is blocked by the stationary gear disc flattening stop 404 and the horizontal tube 2300 of the foot mounting bracket, preventing the backrest side panel assembly 900 from closing indefinitely forward. The downward motion path of the stationary gear disc 1000 is unrestricted and is self-locked by the motor 1300.

[0075] like Figure 39 and Figure 40 As shown, in frontal and rear-end collisions, the seat is flattened, resulting in a low center of gravity and reduced risk due to the impact force in the X direction. In a frontal collision, the weight does positive work, causing the stationary gear 1000 to move slightly downwards. The force is transferred to the vehicle body via the impact of the stationary gear 1000 against the gear 1000 flattening block 404, and then through the rocker arm 201 against the horizontal tube 2300 of the ground mounting bracket, forming a triangular structure. In a rear-end collision, the weight does negative work, causing the stationary gear 1000 to move slightly upwards, with gravity offsetting the impact force.

[0076] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the invention. Various variations can be made to the above embodiments of the present invention. That is, all simple and equivalent changes and modifications made based on the claims and description of this invention fall within the protection scope of the claims of this patent. All aspects not described in detail in this invention are conventional technical content.

Claims

1. A power-folding and storage frame for a seat, characterized in that, The electric folding and storage frame of the seat includes a backrest assembly, a second base mounting bracket assembly, a cam locking mechanism, and a motor. The second foot mounting bracket assembly includes a front stop block for the stationary gear plate; The cam locking mechanism includes a double-tooth plate mechanism and a cam mechanism. 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 includes a stacked stationary toothed plate and a movable toothed plate, wherein the stationary toothed plate is fixedly mounted on the backrest assembly, and the movable toothed plate is rotatably mounted on the backrest assembly; The cam mechanism includes a cam and a cam linkage bracket. The two ends of the cam linkage bracket are rotatably connected to the cam and the moving gear plate, respectively. The cam linkage bracket has a waist groove. The cam is rotatably mounted on the second foot mounting bracket assembly so as to drive the cam linkage bracket and drive the cam through the moving gear plate. When locked, the waist groove provides the backrest assembly with a return stroke, so that the stationary gear plate reaches the position of complete contact with the front stop of the stationary gear plate. The front stop of the stationary gear plate and the cam abut against the stationary gear plate in the locked state to lock the stationary gear plate, thereby realizing the function of locking the backrest assembly.

2. The electric folding and storage frame for seats according to claim 1, characterized in that, The backrest assembly has a rear stop point and a front stop point of the moving gear plate that are spaced apart from each other, and the moving gear plate has a free travel of the stationary gear plate that is limited by the rear stop point and the front stop point of the moving gear plate.

3. The electric folding and storage frame for seats according to claim 2, 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 several fewer teeth than the moving gear plate in order to achieve the idle stroke of the stationary gear plate.

4. The electric folding and storage frame for seats according to claim 1, characterized in that, The electric folding and storage frame of the seat also includes a seat basin assembly, a first foot mounting bracket assembly, and a concentric angle adjuster. The first foot mounting bracket assembly and the second foot mounting bracket assembly are fixedly installed on the vehicle floor at intervals. The two sides of the seat basin assembly are respectively fixed to the first foot mounting bracket assembly and the second foot mounting bracket assembly. The backrest assembly is rotatably installed on the seat basin assembly through the concentric angle adjuster.

5. The electric folding and storage frame for seats according to claim 4, characterized in that, The electric folding and storage frame of the seat also includes an adjuster unlock bracket, a cable, and a cable mounting bracket. The cable has a cable input end and a cable output end. The adjuster unlock bracket is rotatably mounted on the concentric adjuster and connected to the cable output end. The cable mounting bracket is connected to the cable input end to drive the concentric adjuster to unlock via the cable.

6. The electric folding and storage frame for seats according to claim 1, characterized in that, The second mounting bracket assembly includes a mounting bracket and a motor mounting bracket, wherein the motor is fixedly mounted on the mounting bracket via the motor mounting bracket.

7. The electric folding and storage frame for seats according to claim 6, characterized in that, The cam mechanism also includes a cam mounting shaft and a cam return spring. 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.

8. The electric folding and storage frame for seats according to claim 1, characterized in that, In the seated position, the backward movement tendency of the stationary gear plate during a frontal collision is transmitted to the vehicle body through the cam, while the forward movement tendency of the stationary gear plate during a rearal collision is transmitted to the vehicle body through the front stop of the stationary gear plate.

9. The electric folding and storage frame for seats according to claim 6, characterized in that, The electric folding and storage frame of the seat also includes a horizontal tube of the foot mounting bracket fixedly connected to the second foot mounting bracket assembly. The second foot mounting bracket assembly also includes a stationary gear plate flattening block fixedly installed on the motor mounting bracket. In the folded position of the seat, the upward movement path of the stationary gear plate is blocked by the stationary gear plate flattening block and the horizontal tube of the foot mounting bracket, and the downward movement path of the stationary gear plate relies on the motor self-locking.

10. The electric folding and storage frame for a seat according to claim 9, characterized in that, The seat assembly has a rocker arm that extends diagonally upward from the rear. When the seat is folded, the downward movement of the stationary gear plate during a forward collision causes the stationary gear plate to strike the gear plate flattening block. The rocker arm then strikes the horizontal tube of the foot mounting bracket, forming a triangular structure that transmits the force to the vehicle body.

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