seat restraint assembly

Abstract

The present application relates to a seat restraint assembly comprising a seat member configured as part of a seat cushion frame, a base to which the seat member is mounted and movable relative to the base, a hooking member pivotably connected to one of the seat member and the base, a stop member fixedly connected to the other of the seat member and the base, and a positioning device configured to enable the hooking member to be pivoted between an engaged state in which the hooking member hooks onto the stop member thereby limiting movement of the seat member relative to the base, and a disengaged state in which the hooking member is disengaged from the stop member thereby enabling movement of the seat member relative to the base. With the seat restraint assembly according to the present application, it is possible to reliably restrain a vehicle seat in a position in which an occupant is seated, so as to minimize displacement of the vehicle seat in a passenger compartment of a vehicle, for example, in the event of a collision of the vehicle.

Description

Technical Field

[0001] This application relates generally to the field of vehicles, and more specifically to a seat restraint assembly. Background Technology

[0002] With the development of vehicle technology, the personalized functions of vehicles are constantly evolving and improving. Vehicle seats are an important component of vehicles, and to meet various personalized needs and adapt to different application scenarios, the flexibility and rationality of vehicle seat adjustments are continuously improving. On the other hand, from a vehicle safety perspective, the design of vehicle seats should also consider safety and reliability in the event of an accident, such as a collision. For example, when the vehicle seat is in the occupant's seating position, it is desirable that the seat be reliably restrained to minimize displacement within the vehicle cabin in the event of a collision. Conversely, when adjustments to the seat's posture or position are needed, it is desirable that the restraints be easily released to allow for adjustment of the seat's posture. Summary of the Invention

[0003] In the sense of this application, the term "vehicle" can be generally understood as a means of transport, such as a land vehicle, a water vehicle (or a ship) or an air vehicle (or an aircraft), especially a motor vehicle such as a passenger car or a truck.

[0004] The applicant of this invention discovered during the research and development of the product that the vehicle seats known in the prior art do not provide reliable restraint when in the posture for occupants to sit, and the safety protection measures for occupants need to be improved.

[0005] Therefore, a first aspect of this application relates to a seat constraint assembly, the seat constraint assembly comprising:

[0006] A seat component, which is part of a seat cushion frame;

[0007] A base, wherein the seat member is mounted to the base and is movable relative to the base;

[0008] A hook member, which is pivotally connected to one of the seat member and the base;

[0009] A stop member, which is fixedly connected to the other of the seat member and the base.

[0010] A positioning device is configured to pivot the hook member between an engaged state and a disengaged state. In the engaged state, the hook member is hooked onto the stop member, thereby restricting movement of the seat member relative to the base. In the disengaged state, the hook member is disengaged from the stop member, thereby allowing movement of the seat member relative to the base.

[0011] The seat restraint assembly according to the invention provides that the vehicle seat can be reliably restrained when in a passenger-oriented posture, thereby minimizing displacement of the vehicle seat within the vehicle cabin, for example, in the event of a vehicle collision. Furthermore, the restraint on the vehicle seat by the seat restraint assembly according to the invention can be easily released, facilitating adjustment of the vehicle seat's posture or position.

[0012] In some embodiments, the positioning device includes a retaining mechanism and an unlocking mechanism, the retaining mechanism being capable of applying a force to the hook member to pivot toward the engaged state, and the unlocking mechanism being capable of applying a force to the hook member to pivot toward the disengaged state.

[0013] In some embodiments, the retaining mechanism is configured as a return spring connected to the hook member and capable of applying a force to the hook member to deflect toward the engaged state.

[0014] In some embodiments, the return spring is further connected to one of the seat member and the base.

[0015] In some embodiments, the unlocking mechanism is connected to the hook member and can be driven by a drive mechanism to change the hook member from the engaged state to the disengaged state.

[0016] In some embodiments, the drive mechanism is configured as a motor; and / or the unlocking mechanism is configured as a cable.

[0017] In some embodiments, the hook member is pivotally connected to the seat member, the stop member is fixedly connected to the base, and the seat member is slidable relative to the base in the disengaged state of the hook member.

[0018] In some embodiments, the base includes a groove, and the seat member is slidably connected to the groove.

[0019] In some embodiments, the hook member is pivotally connected to the base, the stop member is fixedly connected to the seat member, and the seat member can be flipped relative to the base in the disengaged state of the hook member.

[0020] In some embodiments, the retaining mechanism includes a retaining rod and a coil spring.

[0021] The retaining rod is configured to be pivotally mounted to the base about a pivot axis and further connected to the hook member, such that pivoting of the retaining rod about the pivot axis can cause the hook member to change between the engaged state and the disengaged state.

[0022] The coil spring is sleeved on the pivot and connected at one end to the retaining rod and at the other end to the base. The coil spring is configured to hold the retaining rod in the engaged state by applying an elastic force to the retaining rod.

[0023] In some embodiments, the retaining rod includes a section extending radially away from the pivot, the section including an opening slot, the retaining rod being connected to the hook member via an engagement between the opening slot and a pin disposed on the hook member.

[0024] In some embodiments, the base is slidably connected to the lower rail, and the unlocking mechanism is configured to apply a force toward the disengaged state to the hook member as the base slides forward relative to the lower rail.

[0025] In some embodiments, the unlocking mechanism is fixedly connected to the lower rail and is configured to have a ramp section, the ramp section being configured such that the retaining rod can pivot about the pivot to cause the hook member to change between an engaged state and a disengaged state, wherein the retaining rod includes a leg extending radially away from the pivot, the leg being configured to gradually engage the ramp section as the base slides forward relative to the lower rail within a first travel range corresponding to the ramp section, and be deflected by the ramp section to a deflected state, such that the retaining rod pivots about the pivot to cause the hook member to change from the engaged state to the disengaged state.

[0026] In some embodiments, the unlocking mechanism is configured to further have a straight section adjacent to the ramp section in front of the ramp section, the straight section being configured to engage with the leg during movement of the base relative to the lower rail within a second stroke range corresponding to the straight section, thereby keeping the leg in the deflected state and keeping the hook member in the disengaged state.

[0027] In some embodiments, the leg is arranged radially in a direction substantially opposite to the extension of the segment including the opening slot.

[0028] In some embodiments, the stop member is configured as a steel wire rope.

[0029] In some embodiments, when the hook member is in the engaged position, a certain gap is maintained between the hook member and the stop member.

[0030] In some embodiments, the hook member includes a stop feature, and one of the seat member and the base to which the hook member is connected includes a corresponding feature, wherein when the hook member is in an engaged state, the corresponding feature abuts against the stop feature, thereby maintaining the gap between the hook member and the stop member.

[0031] A second aspect of this application relates to a seat frame comprising a seat restraint assembly as described above.

[0032] In some embodiments, the seat frame includes one seat restraint assembly mounted on one side in the lateral direction, or two seat restraint assemblies mounted on both sides in the lateral direction.

[0033] A third aspect of this application relates to a vehicle seat comprising the seat frame described above.

[0034] The technical features mentioned above, those to be mentioned below, and those shown individually in the accompanying drawings can be combined arbitrarily, provided that the combined technical features are not contradictory. All feasible combinations of features are the technical content explicitly described herein. Any one of the multiple sub-features contained in the same statement can be applied independently, without necessarily being applied together with other sub-features. Attached Figure Description

[0035] Exemplary embodiments will now be described with reference to the illustrative accompanying drawings. Wherein:

[0036] Figure 1 A seat frame and a seat restraint assembly contained therein are shown according to one embodiment of the present application.

[0037] Figure 2A It shows Figure 1 A perspective view of the seat constraint assembly, in which the hook component is in an engaged state.

[0038] Figure 2B It shows Figure 1 An exploded view of the seat constraint assembly.

[0039] Figure 3 It shows Figure 2AAn enlarged plan view of the seat restraint assembly, in which the wire rope is partially removed to clearly show the relationship between the wire rope and the hook member when the hook member is in the engaged state.

[0040] Figure 4A It shows Figure 2A A perspective view of the seat constraint assembly, in which the hook component is in a disengaged state.

[0041] Figure 4B It shows Figure 4A A plan view of the seat constraint assembly.

[0042] Figure 5A It shows Figure 2A A perspective view of the seat constraint assembly, wherein the hook member is in a disengaged state and relative to... Figure 2A As shown in the diagram, the seat component has moved forward a certain distance along the slide.

[0043] Figure 5B It shows Figure 5A A plan view of the seat constraint assembly.

[0044] Figure 6A A schematic diagram of a motor and corresponding transmission mechanism for driving a hook member according to an embodiment of this application is shown, wherein the motor and transmission mechanism are positioned such that the hook member is in an engaged state.

[0045] Figure 6B It shows Figure 6A A schematic diagram of the motor and corresponding transmission mechanism in the position where the hook component is disengaged.

[0046] Figure 7 An exploded view of a seat restraint assembly and some associated devices and components according to an embodiment of this application is shown.

[0047] Figure 8 A seat frame and a seat restraint assembly included therein are shown according to yet another embodiment of the present application, wherein the seat cushion frame is in a first state and the hook member is in an engaged state.

[0048] Figure 9A It shows Figure 8 A three-dimensional view of the seat constraint assembly, and the state of the seat constraint assembly and... Figure 8 The state of the seat frame corresponds to that of the seat frame.

[0049] Figure 9B It shows Figure 9A The plan view of the seat constraint assembly shown.

[0050] Figure 9C It shows Figure 9A An exploded view of the seat constraint assembly shown.

[0051] Figure 10 It shows Figure 8 The seat frame shown is in a second state, with the seat cushion frame in a disengaged state.

[0052] Figure 11 It shows Figure 9A The plan view of the seat constraint assembly shown indicates that the hook member is in the disengaged state, and the state of the seat constraint assembly is consistent with... Figure 10 The state of the seat frame corresponds to that of the seat frame.

[0053] Figure 12 It shows Figure 8 The seat frame shown is in the third state.

[0054] Figure 13 It shows the relationship with Figure 9A The plan view of the seat constraint assembly shown indicates that the hook member is in the disengaged state, and the state of the seat constraint assembly is consistent with... Figure 12 The state of the seat frame corresponds to that of the seat frame.

[0055] Figure 14A It shows Figure 9B An enlarged plan view of the seat constraint assembly shown.

[0056] Figure 14B It shows Figure 14A The diagram shows a partial schematic of the seat restraint assembly, in which the wire rope is shown in cross-section to clearly illustrate the relationship between the wire rope and the hook member when the hook member is in the engaged state.

[0057] Figure 15A This illustrates the situation where, with the hook-and-loop mechanism engaged, the seat cushion frame moves forward due to a vehicle impact, for example. Figure 14A The diagram shows a plan view of the seat constraint assembly.

[0058] Figure 15B It shows that Figure 15A The diagram shows a plan view of the steel wire rope of the seat restraint assembly in the form of a cross-section. Detailed Implementation

[0059] Exemplary embodiments of this application will now be described with reference to the accompanying drawings. However, it should be understood that this application can be presented in many different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments. Throughout the drawings, the same reference numerals denote the same or functionally identical elements.

[0060] In the context of this application, unless otherwise specified, the expression "front" or "forward" refers to the direction in which the vehicle seat faces the occupant seated thereon, for example, as... Figure 1 and Figure 8 The "x" indicates that "behind" or "rear" is the opposite direction to "x".

[0061] like Figure 1 As shown, a seat frame 1 according to one embodiment of this application may include a seat back frame 2 and a seat cushion frame 3, which can be connected together and are movable relative to each other. The seat back frame 2 can be used to support the seat back, and the seat cushion frame 3 can be used to support the seat cushion. Advantageously, the seat cushion frame 3 can be further configured to be adjustable relative to the vehicle body, such as fore-and-aft sliding adjustment or flip adjustment within the cabin, to adapt to various needs under different working conditions. The seat frame 1 may include a seat restraint assembly according to one embodiment of this application, generally indicated by reference numeral "10", and in, for example... Figures 2A to 5B The following is shown in more detail. For example, the seat frame 1 may include one seat restraint assembly 10 mounted on one side in the lateral direction y, or it may include two seat restraint assemblies 10 mounted on both sides in the lateral direction y. It should be understood that the seat frame 1 may also include more seat restraint assemblies 10.

[0062] like Figures 2A to 3 As shown, the seat restraint assembly 10 may include a seat member 11 and a base 12. The seat member 11 may, for example, be part of the seat cushion frame 3. The base 12 may be configured to be fixedly connected to the vehicle body or to be adjustable relative to the vehicle body. The seat cushion frame 3 is mounted to the base 12 and is movable relative to the base 12, for example, it may slide back and forth or flip relative to the base 12. For example, the base 12 may include a groove 13, and the seat cushion frame 3 may be slidably connected to the groove 13 via the seat member 11, thereby enabling the seat cushion frame 3 to be adjusted back and forth inside the cabin.

[0063] The seat restraint assembly 10 may further include a hook member 14 and a stop member, such as a wire rope 15. The hook member 14 may be pivotally connected to the seat member 11, for example, from a... Figure 2AThe engagement state shown pivots to, for example Figure 4A The detached state is shown in the image. Figure 2B As shown, the hook member 14 can be connected to the seat member 11 via bolts 61, washers 63, and nuts 62. The wire rope 15 can be fixedly connected to the base 12. When the hook member 14 is engaged, the engagement between the hook member 14 and the wire rope 15 creates a constraint force between the seat member 11 and the base 12, restricting movement of the seat member 11, or the seat frame 3, relative to the base 12, such as forward movement along the slide 13. When the hook member 14 is disengaged, the engagement between the hook member 14 and the wire rope 15 is released, the constraint force between the seat member 11 and the base 12 is released, and the seat frame 3 can then move forward along the slide 13 under the drive of a corresponding driving force (e.g., moving to...). Figure 5A and Figure 5B (as shown in the image) to allow for fore-and-aft adjustment of the seat cushion frame 3 within the vehicle cabin.

[0064] The hook member 14 can be switched between an engaged state and a disengaged state by a positioning device. For example, the positioning device may include a retaining mechanism and an unlocking mechanism, the retaining mechanism being configured to apply a pivoting force toward the engaged state to the hook member 14, and the unlocking mechanism being configured to apply a pivoting force toward the disengaged state to the hook member 14. For example, as... Figure 3 As clearly shown, the retaining mechanism can be configured as a return spring 17, which can be connected to the hook member 14 to apply a force to the hook member 14 toward the engaged state. In some embodiments, the return spring 17 can be further connected to the seat member 11 so that when the hook member 14 is in the disengaged state, the return spring 17 can move with the hook member 14 and the seat member 11.

[0065] It should be understood that in other embodiments not shown, the positions of the hook member 14 and the wire rope 15 can be interchanged; that is, the hook member 14 can also be pivotally connected to the base 12, and correspondingly, the wire rope 15 can be fixedly connected to the seat member 11. In such an embodiment, the return spring 17 can be further connected to the base 12 in addition to being connected to the hook member 14.

[0066] In some embodiments, the unlocking mechanism may be connected to the hook member 14 and can be driven by a drive mechanism to change the hook member 14 from an engaged state to a disengaged state. The drive mechanism may, for example, be a motor 18 (see...). Figure 6A and Figure 6B The unlocking mechanism can be configured, for example, as a cable 19 connected to the hook member 14 (see...). Figure 6A and Figure 6BThe cable 19 can be fastened, for example, to the connecting pin 141 on the hook member 14.

[0067] like Figure 6A As shown, the cable 19 can be connected to the motor 18, for example, via a transmission mechanism 20. The transmission mechanism 20 may include, for example, a lead screw drive mechanism 21, a top block 22, and a rotating block 23. Figure 6A and 6B As shown, as the motor 18 drives the lead screw 24 of the lead screw transmission mechanism 21 from... Figure 6A The position in the middle moves to Figure 6B In the middle position, the top block 22, which moves together with the lead screw 24, pushes the rotating block 23 to rotate around the pivot 25, thereby pulling the cable 19 connected to the rotating block 23. Thus, the cable 19 can pull the hook member 14 from... Figure 2A Pull up to the position shown Figure 4A The position shown. Conversely, the resetting of the hook member 14 can be achieved by causing the motor 18 to drive the lead screw 24 from the position shown. Figure 6B The position in the middle moves to Figure 6A The position of the hook member 14 is determined by the location of the hook member 14. In some embodiments, the motor 18 may be an existing motor in the seat originally used to perform other functions, thereby achieving the lifting and resetting of the hook member 14 by sacrificing a portion of the motor's stroke. For example, the motor 18 may be a seat cushion extension motor or the like.

[0068] In other embodiments, a dedicated motor can also be used to pull up and reset the hook member 14. For example, as Figure 7 As shown, the seat component 11' can be welded to components such as the right wall panel 64, front tube 65, left wall panel 66, and rear tube 67 of the seat frame 3 to form part of the seat frame 3. The return spring 17 can be connected at one end to the hook component 14 and at the other end to a part of the seat frame 3, such as to the hook 68 on the right wall panel 64. A motor 8 dedicated to lifting and resetting the hook component 14 can be connected to a cable 9, which can be further connected to the hook component 14, such as to the connecting pin 141 on the hook component 14, so that the motor 8 can lift and reset the hook component 14 via the cable 9.

[0069] like Figure 3 As further shown, when the hook member 14 is in the engaged position, a certain gap G is maintained between the hook member 14 and the wire rope 15. This can be achieved, for example, through the interaction between the stop feature 142 on the hook member 14 and the corresponding feature 111 on the seat member 11 to which the hook member 14 is connected. Figure 3As shown, the hook member 14 can be pulled towards the seat member 11 under the elastic force of the return spring 17 until it reaches the position where the stop feature 142 and the corresponding feature 111 abut against each other. At this position, a certain gap G can exist between the hook member 14 and the wire rope 15. This avoids or reduces contact between the hook member 14 and the wire rope 15 when they are in the engaged state, thereby reducing noise.

[0070] like Figure 8 As shown, according to another embodiment of this application, the seat frame 4 may include a seat back frame 5 and a seat cushion frame 6, which can be connected together and are movable relative to each other. The seat back frame 5 can be used to support the seat back, and the seat cushion frame 6 can be used to support the seat cushion. Advantageously, the seat cushion frame 6 can be configured to be adjustable relative to the vehicle body, such as fore-and-aft sliding adjustment or flip adjustment within the cabin. The seat frame 4 may include a seat restraint assembly according to another embodiment of this application, generally indicated by reference numeral "30", and in other examples... Figure 9A The details are shown in more detail below. The seat frame 4 may include one seat restraint assembly 30 mounted on one side in the lateral direction y, or it may include two seat restraint assemblies 30 mounted on both sides in the lateral direction y. It should be understood that the seat frame 4 may also include more seat restraint assemblies 30.

[0071] Figure 8 and Figure 9A As shown, the seat restraint assembly 30 may include a seat member 31 and a base 32. The seat member 31 may be, for example, part of the seat cushion frame 6, such as the rear crossbeam of the seat cushion frame 6. The base 32 may be configured to be fixedly connected to the vehicle body or to be adjustable relative to the vehicle body. The seat cushion frame 6 may be mounted to the base 32 and movable relative to the base 32, for example, it may be able to flip relative to the base 32. For example, the base 32 may be configured to slide forward and backward relative to the vehicle body. For example, the base 32 may be slidably connected to a lower rail 7 fixed to the vehicle body, so that the base 32, carrying the seat cushion frame 6, can slide forward and backward along the lower rail 7 to achieve forward and backward adjustment of the seat cushion frame 6 within the vehicle cabin. For example, the base 32 may be driven by a corresponding drive device (e.g., a drive motor, etc.) to slide relative to the lower rail 7.

[0072] The seat restraint assembly 30 may further include a hook member 33 and a stop member, such as a wire rope 34. Figure 8As shown, the wire rope 34 can be fixedly connected to the seat member 31, and the hook member 33 can be pivotally connected to the base 32. For example, the base 32 may include a mounting member 35 fixedly mounted to a section of the base 32, and the hook member 33 can be pivotally connected to the mounting member 35. For example, as Figure 9C As shown, the hook member 33 can be pivotally connected to the mounting member 35 via the stepped rivet 71. Figure 14B As shown, when the wire rope 34 is in a position where it can be engaged by the hook member 33, the wire rope 34 can, for example, be placed in the upwardly open recess 36 of the mounting member 35. Advantageously, the dimension of the recess 36 in the front-rear direction can be larger than the dimension of the wire rope 34 in the front-rear direction, thereby avoiding installation difficulties caused by manufacturing tolerances of the wire rope 34.

[0073] Hook member 33 can be configured to be able to hang relative to base 32 from, for example Figure 9A and 9B The engagement state shown pivots as follows Figure 11 The disengaged state is shown in the diagram. In the engaged state, the engagement between the hook member 33 and the wire rope 34 creates a constraint force between the seat member 31 and the base 32, which restricts the seat member 31, or the seat frame 6, from moving relative to the base 32, for example, from flipping. In the disengaged state, the hook member 33 is disengaged from the wire rope 34, the constraint force between the seat member 31 and the base 32 is released, and the seat frame 6 can then flip relative to the base 32, for example, under the drive of a corresponding driving force (e.g., move to...). Figure 12 (as shown in the image) to allow the seat cushion frame 6 to flip back and forth within the vehicle cabin.

[0074] The hook member 33 can be switched between an engaged state and a disengaged state by a positioning device. For example, the positioning device may include a retaining mechanism 40 and an unlocking mechanism 50, wherein the retaining mechanism 40 is configured to apply a force to the hook member 33 toward the engaged state, and the unlocking mechanism 50 is configured to apply a force to the hook member 33 toward the disengaged state. For example, the unlocking mechanism 50 may be configured to apply a force to the hook member 33 toward the disengaged state as the base 32 slides forward relative to the lower rail 7.

[0075] like Figure 9A and 9BAs clearly shown, the retaining mechanism 40 may include a coil spring 41 and a retaining rod 42. The retaining rod 42 may be configured to be pivotally mounted to the base 32 about a pivot 43 and further connected to the hook member 33. The pivot 43 may, for example, be configured as a stepped rivet. Pivoting of the retaining rod 42 about the pivot 43 can cause the hook member 33 to change between an engaged state and a disengaged state. For example, the retaining rod 42 may include a section 44 extending radially away from the pivot 43, which may include an opening slot 45, and the opening slot 45 may engage with a pin 37 provided on the hook member 33, such that the retaining rod 42 is connected to the hook member 33 through the engagement between the opening slot 45 and the pin 37, such that pivoting of the retaining rod 42 about the pivot 43 can cause the hook member 33 to change between an engaged state and a disengaged state. It should be understood that the retaining rod 42 and the hook member 33 can also be fitted together by other structural forms. For example, an opening slot 45 can be provided on the hook member 33, and a pin 37 can be provided on the retaining rod 42. The opening slot 45 and the pin 37 can also be replaced by other structures that can achieve similar functions. On the other hand, the coil spring 41 can be sleeved on the pivot 43, with one end connected to the retaining rod 42 and the other end connected to the base 32, and can hold the retaining rod 42 in the state in which the hook member 33 is engaged by applying an elastic force to the retaining rod 42.

[0076] like Figure 9A and Figure 9B As further shown, the unlocking mechanism 50 can, for example, be fixedly connected to the lower rail 7 and can be configured to have a ramp section 51, which can be arranged such that the retaining rod 42 can pivot about the pivot 43 to cause the hook member 33 to change between an engaged state and a disengaged state. For example, as Figure 9A As shown, the retaining rod 42 may include a leg 46 extending radially away from the pivot 43. This leg 46 may be configured to gradually engage the ramp section 51 as the base 32 slides forward relative to the lower rail 7 within a first travel range corresponding to the ramp section 51, and be deflected by the ramp section 51 to a deflected state, thereby causing the retaining rod 42 to pivot about the pivot 43 to actuate the hook member 33 from an engaged state to a disengaged state. The leg 46 may, for example, be arranged radially in a direction substantially opposite to the extension direction of the section 44 including the slot 45. "Arranged radially in a direction substantially opposite to the extension direction" means that the small angle between the leg 46 and the extension direction of the section 44 including the slot 45 may be, for example, between 150° and 180°.

[0077] like Figure 10 As shown, the seat frame 6 moves from the base 32 relative to the lower rail 7. Figure 9A The device slides forward for the first stroke to reach the second state, where the hook component 33 is disengaged. Figure 11 This further illustrates when the seat frame 6 is in the position of... Figure 10 The diagram shows a plan view of the seat restraint assembly 30 in the second state. When the seat frame 6 is in the second state, since the constraint between the seat frame 6 and the base 32 is released, the seat frame 6 can move relative to the base 32, for example, it can flip relative to the base 32 to reach a position such as... Figure 12 The third state is shown in the diagram. When the seat frame 6 reaches the state shown in the diagram... Figure 12 In the third state shown, the corresponding state of the seat constraint assembly 30 is as follows: Figure 13 As shown.

[0078] For example, such as Figure 9A and Figure 9B As shown, the unlocking mechanism 50 can also be configured to have a straight section 52 adjacent to the ramp section 51 in front of it, and can be configured to remain engaged with the leg 46 during the movement of the base 32 relative to the lower rail 7 within a second stroke range corresponding to the straight section 52, thereby keeping the leg 46 in a deflected state and keeping the hook member 33 in a disengaged state. This allows the hook member 33 to remain in a disengaged state within a larger stroke range of the base 32 relative to the lower rail 7, so that the seat frame 6 can move relative to the base 32 without being constrained by the seat restraint assembly 30, thereby facilitating adjustment of the seat frame 6.

[0079] like Figure 14A and Figure 14B As further shown, when the hook member 33 is in the engaged position, a certain gap G is maintained between the hook member 33 and the wire rope 34. This can be achieved, for example, through the interaction between the stop feature 38 on the hook member 33 and the corresponding feature 39 on the mounting member 35 to which the base 32 is connected. It should be understood that the corresponding feature 39 can also be positioned at other locations on the base 32. Figure 14A As shown, when the retaining rod 42 is not engaged with the unlocking mechanism 50, the hook member 33 is pushed towards the base 32 by the elastic force of the coil spring 41 until it reaches the position where the stop feature 38 and the corresponding feature 39 abut against each other. At this position, there is a certain gap G between the hook member 33 and the wire rope 34. This avoids or reduces contact between the hook member 33 and the wire rope 34 when the hook member 33 is engaged, thereby reducing noise.

[0080] like Figure 15A and Figure 15B As shown, for example, when a vehicle collision occurs, the seat cushion frame 6, under the action of the occupant's inertial force, relative to... Figure 14A and Figure 14BWhen the seat frame 6 is pulled forward and upward, its forward and upward movement is constrained by the hook member 33, which can effectively prevent or alleviate the displacement of the seat frame 6 and protect the safety of the occupants.

[0081] The seat restraint assembly according to the invention provides that the vehicle seat can be reliably restrained when in a passenger-oriented posture, thereby minimizing displacement of the vehicle seat within the vehicle cabin, for example, in the event of a vehicle collision. Furthermore, the restraint on the vehicle seat by the seat restraint assembly according to the invention can be easily released, facilitating adjustment of the vehicle seat's posture or position.

[0082] It should be understood that the terminology used in this specification is for describing specific embodiments only and is not intended to limit this application. All terms used in this specification, unless otherwise defined, have the meanings commonly understood by those skilled in the art. For the sake of brevity or clarity, well-known functions or structures may not be described in detail.

[0083] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature but do not exclude the presence of one or more other features. The term “and / or” used in this specification includes any and all combinations of one or more of the relevant listed items.

[0084] In the specification, when an element is described as being "on," "attached," "connected," "coupled," or "in contact" with another element, the element can be directly located on, attached to, connected to, coupled to, or in contact with the other element, or there may be intermediate elements present. Conversely, when an element is described as being "directly" located on, directly attached to, directly connected to, directly coupled to, or directly in contact with another element, no intermediate elements are present. In the specification, the description of a feature being arranged "adjacent" to another feature can mean that a feature has a portion overlapping with the adjacent feature or a portion located above or below the adjacent feature.

[0085] It is understood that although the terms "first," "second," etc., may be used herein to describe different elements, these elements should not be limited by these terms. These terms are merely used to distinguish one element from another. Therefore, a first element may be referred to as a second element without departing from the teachings of this application.

[0086] Finally, it should be noted that the above embodiments are merely for understanding this application and do not constitute a limitation on the scope of protection of this application. Those skilled in the art can make modifications based on the above embodiments, and these modifications will not depart from the scope of protection of this application.

Claims

1. A seat constraint assembly, characterized in that, The seat constraint assembly includes: A seat component, which is part of a seat cushion frame; A base, wherein the seat member is mounted to the base and is movable relative to the base; A hook member, which is pivotally connected to one of the seat member and the base; A stop member, which is fixedly connected to the other of the seat member and the base. A positioning device is configured to pivot the hook member between an engaged state and a disengaged state. In the engaged state, the hook member is hooked onto the stop member, thereby restricting movement of the seat member relative to the base. In the disengaged state, the hook member is disengaged from the stop member, thereby allowing movement of the seat member relative to the base. The positioning device includes a retaining mechanism and an unlocking mechanism. The retaining mechanism is capable of applying a force to the hook member toward the engaged state, and the unlocking mechanism is capable of applying a force to the hook member toward the disengaged state. The hook member is pivotally connected to the base, and the stop member is fixedly connected to the seat member. In the disengaged state of the hook member, the seat member can rotate relative to the base. The retaining mechanism includes a retaining rod and a coil spring. The retaining rod is pivotally mounted to the base about a pivot and further connected to the hook member, such that pivoting of the retaining rod about the pivot can cause the hook member to change between the engaged state and the disengaged state. The coil spring is sleeved on the pivot and connected at one end to the retaining rod and at the other end to the base. The coil spring is configured to hold the retaining rod in the engaged state by applying an elastic force to the retaining rod. The base includes a mounting member fixedly mounted to the base. The mounting member includes an upwardly opening recess in which the stop member is positioned when it is in a position where it can be engaged by the hook member.

2. The seat constraint assembly according to claim 1, characterized in that, The retaining mechanism is configured as a return spring, which is connected to the hook member and is capable of applying a force to the hook member to deflect toward the engaged state.

3. The seat constraint assembly according to claim 2, characterized in that, The return spring is further connected to one of the seat member and the base.

4. The seat constraint assembly according to claim 1, characterized in that, The unlocking mechanism is connected to the hook member and can be driven by the drive mechanism to change the hook member from the engaged state to the disengaged state.

5. The seat constraint assembly according to claim 4, characterized in that, The drive mechanism is constructed as a motor; and / or the unlocking mechanism is constructed as a cable.

6. The seat constraint assembly according to claim 1, characterized in that, The base is slidably connected to the lower rail, and the unlocking mechanism is configured to apply a pivoting force toward the disengaged state to the hook member as the base slides forward relative to the lower rail.

7. The seat constraint assembly according to claim 6, characterized in that, The unlocking mechanism is fixedly connected to the lower rail and is configured to have a ramp section, which is arranged such that the retaining rod can pivot about the pivot to cause the hook member to change between an engaged state and a disengaged state.

8. The seat constraint assembly according to claim 7, characterized in that, The retaining rod includes a leg extending radially away from the pivot, the leg being configured to gradually engage the ramp segment as the base slides forward relative to the lower rail within a first travel range corresponding to the ramp segment, and be deflected by the ramp segment to a deflected state, such that the retaining rod pivots about the pivot to actuate the hook member from the engaged state to the disengaged state.

9. The seat constraint assembly according to claim 8, characterized in that, The unlocking mechanism is further configured to have a straight section adjacent to the ramp section in front of the ramp section, the straight section being configured to engage with the leg during the movement of the base relative to the lower rail within a second stroke range corresponding to the straight section, thereby keeping the leg in the deflected state and keeping the hook member in the disengaged state.

10. The seat constraint assembly according to claim 8, characterized in that, The retaining rod includes a section extending radially away from the pivot, the section including an opening slot, the retaining rod being connected to the hook member via an engagement between the opening slot and a pin disposed on the hook member.

11. The seat constraint assembly according to claim 10, characterized in that, The leg is arranged radially in a direction substantially opposite to the extension of the section including the opening slot.

12. The seat restraint assembly according to any one of claims 1 to 5, characterized in that, The stop component is constructed as a steel wire rope.

13. The seat restraint assembly according to any one of claims 1 to 5, characterized in that, When the hook member is in the engagement position, a certain gap is maintained between the hook member and the stop member.

14. The seat constraint assembly according to claim 13, characterized in that, The hook member includes a stop feature, and one of the seat member and the base to which the hook member is connected includes a corresponding feature. When the hook member is in an engaged state, the corresponding feature abuts against the stop feature, thereby maintaining the gap between the hook member and the stop member.

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