Auxiliary power assisting mechanism for overturning of automobile seat
By adopting a dual-spring structure and a limiting cover design in the automotive seat flip-up assist mechanism, the problems of insufficient single-spring assistance and high production costs are solved, achieving a wider range of seat adaptability and cost savings.
Patent Information
- Application Number
- CN202422981813.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-04
AI Technical Summary
In existing automotive seat flip-up assist mechanisms, the spring provides little assistance under unilateral force, and the range of seat weights it can match is narrow, resulting in high production costs.
It adopts a dual-spring structure with springs installed in opposite directions. The springs are limited by a spring limit cover to prevent displacement and abnormal noise. Only the springs and limit covers need to be replaced to adapt to different seat weights.
It improved the power assist effect, expanded the range of seat weight matching, and reduced production costs.
Smart Images
Figure CN223494334U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive seats, specifically relating to an automotive seat flipping assistance mechanism. Background Technology
[0002] In the design process of car seats, in order to facilitate users' sitting and reclining needs and to provide more storage space in the rear of the car, a flipping mechanism and a flipping assistance mechanism are installed on both sides of the rear seats. When it is necessary to rest or to make the storage space in the rear of the car larger, the flipping mechanism is controlled to flip the rear seats backward into the trunk recess, so that the height of the flipped rear seats is level with the height of the rear footrest, forming a space for rest or storage. The flipping assistance mechanism plays a role in assisting the flipping mechanism when the rear seats are flipped up.
[0003] Existing rollover assist mechanisms such as Figure 1 As shown, the device includes a connector 1 connected to a car seat. One end of the connector 1 is connected to a rotating shaft, and the other end of the rotating shaft is connected to a mounting bracket 2. A limiting member 3 and a spring 4 are connected to the rotating shaft within the mounting bracket 2. The spring 4 has a first arm 41 and a second arm 42. The limiting member 3 can rotate with the rotation of the rotating shaft, so that the first arm 41 abuts against the first support portion 21 of the mounting bracket 2, and the second arm 42 abuts against the limiting arm 31 of the limiting member 3; or the first arm 41 abuts against the limiting arm 31 of the limiting member 3, and the second arm 42 abuts against the second support portion 22 of the mounting bracket 2. The rotation of the limiting member 3, driven by the rotating shaft, changes the contact position of the first arm 41 and the second arm 42, thereby storing and releasing the elastic potential energy of the spring 4 to achieve the function of an auxiliary flipping mechanism. However, existing flipping auxiliary mechanisms have the following problems:
[0004] 1. The existing flipping assist mechanism uses the limit member 3 to drive a spring 4 to rotate, thereby changing the contact position of the first arm 41 and the second arm 42 on the spring 4. Therefore, regardless of whether the rotating shaft rotates counterclockwise or clockwise, the spring 4 is only subjected to force in one direction, and the assist provided to the flipping mechanism is relatively small.
[0005] 2. The existing tilt assist mechanism only has one spring, so the range of seat weights it can match is small.
[0006] 3. When the matching range of the flip assist mechanism is lower than the current seat weight, the spring with a matching spring coefficient needs to be replaced. At the same time, the limiting part 3 that cooperates with the spring 4, the mounting bracket 2, and the support seat 5 that is fixed to the mounting bracket 2 also need to be replaced, which greatly increases the production cost. Utility Model Content
[0007] The purpose of this invention is to solve the above-mentioned problems by providing an auxiliary mechanism for flipping a car seat. This mechanism is equipped with two springs arranged in opposite directions. Therefore, regardless of whether the rotating shaft rotates counterclockwise or clockwise, the two springs are subjected to force from both sides, which provides greater assistance to the flipping mechanism and can match a wider range of seat weights. When the matching range is lower than the current seat weight, only the two springs and the matching spring limit covers need to be replaced, which greatly reduces production costs.
[0008] To achieve the above objectives, this utility model provides an automotive seat flipping assist mechanism, including a frame connecting bracket connected to the seat frame. The frame connecting bracket is fixedly connected to one end of a rotating shaft. The other end of the rotating shaft passes through a pull cable wheel, a connecting side wall of a spring fixing bracket, a first spring, a spring limiting cover, a second spring, and the other connecting side wall of the spring fixing bracket, and is then fixed by a nut. The pull cable wheel is engaged with the connecting side wall of the spring fixing bracket. Two oppositely installed first and second springs are provided between the two connecting side walls of the spring fixing bracket. The first arms on the two springs are engaged with the first claws at the top of the spring fixing bracket. The second arms on the two springs abut against the rotating shaft. A spring limiting cover is provided between the two springs and is engaged with the spring fixing bracket. The spring fixing bracket is fixedly connected to the bracket.
[0009] As a further optimization, the spring fixing bracket is provided with at least one second claw on the connecting side wall on the side opposite to the pull wire wheel, and the pull wire wheel is provided with at least one slot at the position opposite to the second claw. The pull wire wheel is engaged with the spring fixing bracket through the mutual cooperation of the slot and the second claw.
[0010] As a further optimization, the spring fixing bracket includes a fixing bracket body. The fixing bracket body has upwardly bent connecting sidewalls on both sides of its lateral direction. The two connecting sidewalls have connecting holes for the rotating shaft to pass through at their relative positions. The connecting sidewall of the spring fixing bracket on the side opposite to the pull wire wheel is provided with at least one second claw. The top of the two connecting sidewalls has two first claws arranged in opposite directions. The two longitudinal ends of the two connecting sidewalls have locking arms that bend inward toward the fixing bracket body. The locking arms have slots that engage with the spring limiting cover.
[0011] As a further optimization, the spring limiting cover includes an outer cover body. The middle position of the outer cover body has a first clearance opening to avoid the pivot. The longitudinal ends of the outer cover body have limiting arms extending laterally to both sides. The two limiting arms on the side of the outer cover body opposite to the first spring are the first limiting arms, and the two limiting arms on the side opposite to the second spring are the second limiting arms. The first and second limiting arms have the same structure. A second clearance opening to avoid the first claw and the first support arm is left at the top of the two second limiting arms. A receiving cavity to accommodate the second spring is formed between the two sides below the second clearance opening. The spring limiting cover separates the first spring and the second spring on the lateral sides of the outer cover body, and limits the first spring and the second spring through the mutual cooperation between the first limiting arm and the connecting side wall and the second limiting arm and the connecting side wall. The outer sides of the first and second limiting arms have a third claw that engages with the spring fixing bracket.
[0012] As a further optimization, a self-lubricating bushing is provided between the rotating shaft and the connecting hole on the connecting side wall.
[0013] Advantages and beneficial effects of this utility model
[0014] 1. This utility model uses two springs for assistance, and the two springs are installed in opposite directions in the spring fixing bracket. The first arm of the two springs is engaged with the two first claws set in opposite directions on the top of the spring fixing bracket. The second arm of the two springs abuts against the rotating shaft. When the rotating shaft rotates, since the installation directions of the two springs are opposite, one spring is in a tightened and stored state when the rotating shaft rotates, and the other spring is in a relaxed and released state when the rotating shaft rotates. Therefore, no matter whether the rotating shaft rotates counterclockwise or clockwise, both springs are working and generating corresponding forces.
[0015] 2. This utility model has two springs, a first spring and a second spring, installed in opposite directions inside the spring fixing bracket. Therefore, under the action of the two springs, it can match seats with a wider weight range.
[0016] 3. This utility model separates the first spring and the second spring on the left and right sides of the outer cover body by using a spring limiting cover. The spring on the corresponding side is limited by the cooperation between the outer cover body and the connecting side wall on the corresponding side. This prevents the spring from shifting and making abnormal noise when rotating with the shaft. It can also prevent the spring from popping out and causing safety hazards. At the same time, it can also protect the spring and prevent foreign objects from entering.
[0017] 4. Compared with the prior art, this utility model saves the metal limiting component and adds a spring limiting cover made of plastic. When the matching range of the flipping assist mechanism is lower than the current seat weight, only the spring with the matching spring coefficient and the spring limiting cover need to be replaced. The spring fixing bracket that cooperates with the spring limiting cover to limit the spring and the bracket that is fixed to the spring fixing bracket do not need to be replaced, thus greatly reducing the production cost. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of an existing tilting assist mechanism;
[0020] Figure 2 This is a schematic diagram of the overall structure provided in the embodiment of this utility model;
[0021] Figure 3 This is a utility model Figure 2 An exploded view of the frame and skeleton after removing the support structure and connecting the support structure;
[0022] Figure 4 This is a schematic diagram of the spring limiting cover and the spring fixing bracket after disassembly in an embodiment of this utility model;
[0023] Figure 5 This is a schematic diagram of the connection between the double springs, the spring fixing bracket, and the second rotating shaft in an embodiment of this utility model;
[0024] Figure 6 This is a schematic diagram of the spring fixing bracket in an embodiment of this utility model.
[0025] Existing structural diagram labels: Connector 1, mounting bracket 2, first support 21, second support 22, limiting component 3, limiting arm 31, spring 4, first support arm 41, second support arm 42, and support base 5.
[0026] Reference numerals in the accompanying drawings:The frame connecting bracket 1, rotating shaft 2, pull wire wheel 3, slot 31, spring fixing bracket 4, fixing bracket body 41, connecting side wall 42, connecting hole 43, second claw 44, first claw 45, locking arm 46, bayonet 47, first spring 5, first support arm 51, second support arm 52, spring limiting cover 6, outer cover body 61, first clearance opening 62, first limiting arm 63, second limiting arm 64, second clearance opening 65, receiving cavity 66, third claw 67, second spring 7, bracket 8, nut 9, and self-lubricating bushing 10. Detailed Implementation
[0027] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein.
[0028] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0029] like Figure 2 and Figure 3As shown, a car seat flipping assist mechanism includes a frame connecting bracket 1 connected to the seat frame. One end of the frame connecting bracket 1 is fixedly connected to a rotating shaft 2. The other end of the rotating shaft 2 passes sequentially through a pull cable wheel 3, a connecting side wall 42 on the right side of a spring fixing bracket 4, a first spring 5, a spring limiting cover 6, a second spring 7, and a connecting side wall 42 on the left side of the spring fixing bracket 4, and is then fixed by a nut 9 to prevent axial movement of the rotating shaft 2 and its components, thus preventing abnormal noise. The pull cable wheel 3 is engaged with the connecting side wall 42 on the right side of the spring fixing bracket 4. Two first springs 5 and second springs 7, installed in opposite directions, are provided between the two connecting side walls 42 of the spring fixing bracket 4. The first arms 51 on the two springs are engaged with the first claws 45 at the top of the spring fixing bracket 4, and the second arms 52 on the two springs abut against... The first spring 5 and the second spring 7 are attached to the square surface of the rotating shaft 2. When the rotating shaft 2 rotates, the first spring 5 and the second spring 7 rotate with the rotating shaft 2. Since the first rotating shaft 5 and the second rotating shaft 7 are installed in two opposite directions, one spring is in a tightened and stored state when rotating with the rotating shaft 2, and the other spring is in a relaxed and released state when rotating with the rotating shaft 2. In order to prevent the two springs from shifting or popping out during operation, this embodiment provides a spring limiting cover 6 between the two springs. The spring limiting cover 6 separates the two springs on the left and right sides of the spring limiting cover 6 and limits the two springs by cooperating with the connecting side walls 42 on both sides of the spring fixing bracket 4. The front and rear ends of the spring limiting cover 6 are engaged with the spring fixing bracket 4. The spring fixing bracket 4 is fixedly connected to the bracket 8. The flipping auxiliary assist mechanism is connected to the vehicle body through the bracket 8.
[0030] like Figures 4-6As shown, the spring fixing bracket 4 includes a fixing bracket body 41. The fixing bracket body 41 has upwardly bent connecting sidewalls 42 on both sides of its lateral direction. The two connecting sidewalls 42 have connecting holes 43 for the rotating shaft 2 to pass through at their relative positions. Three second claws 44 are provided on the right connecting sidewall 42 of the spring fixing bracket 4. Three slots 31 are provided on the pull cable wheel 3 opposite to the second claws 44. The pull cable wheel 3 engages with the spring fixing bracket 4 through the cooperation of the slots 31 and the second claws 44. The pull cable wheel 3 has locking holes, which engage with a locking block at one end of the pull cable. The other end of the pull cable is connected to a floor lock at the bottom of the seat. When the rear seat is flipped backward, the pull cable wheel 3 remains stationary, so there is no gap between the pull cable wheel 3 and the floor lock. The cable tightens as the seat flips backward, causing the floor lock to rotate and retract into the seat base, thus locking the seat. When the rear seats flip forward as a whole, the cable between the cable pull wheel 3 and the floor lock loosens as the seat flips forward, causing the floor lock to return to its original position and lock with the vehicle body latch. The top of the connecting sidewalls 42 on both sides has two first claws 45 arranged in opposite directions. The spring fixing bracket 4 is engaged with the first support arm 51 on the first spring 5 and the second spring 7 through the first claws 45. The left and right sides of the front and rear ends of the fixing bracket body 41 have engagement arms 46 that bend inward toward the fixing bracket body 41. The engagement arms 46 have latches 47. The front and rear ends of the spring limiting cover 6 are engaged with the spring fixing bracket 4 through the latches 47.
[0031] like Figure 4As shown, the spring limiting cover 6 includes a cover body 61. The cover body 61 has a first clearance opening 62 at its center to avoid the rotating shaft 2. The cover body 61 has limiting arms extending to the left and right at its front and rear ends. The two limiting arms on the side of the cover body 61 opposite the first spring 5 are first limiting arms 63, and the two limiting arms on the side opposite the second spring 7 are second limiting arms 64. The first limiting arms 63 and the second limiting arms 64 have the same structure. This embodiment uses the second limiting arms as an example. The tops of the two second limiting arms 64 have second clearance openings 65 to avoid the first claw 45 and the first support arm 51. A receiving cavity 66 is formed between the two lower sides to accommodate the second spring 7. The spring limiting cover 6 separates the first spring 5 and the second spring 7 on the left and right sides of the cover body 61 through the outer cover body 61. The first spring 5 and the second spring 7 are limited by the mutual cooperation of the first limiting arm 63 with the right connecting side wall 42 and the mutual cooperation of the second limiting arm 64 with the left connecting side wall 42 to prevent the first spring 5 and the second spring 7 from shifting or popping out during operation. The outer sides of the first limiting arm 63 and the second limiting arm 64 are equipped with third claws 67. The spring limiting cover 6 is engaged with the slot 47 on the spring fixing bracket 4 through the third claws 67.
[0032] As a further optimization, a self-lubricating bushing 10 is provided between the rotating shaft 2 and the connecting hole 43 on the connecting side wall 42. The self-lubricating bushing 10 plays the role of noise reduction and lubrication.
[0033] Work process
[0034] When the flipping mechanism causes the entire seat to flip backward, the seat will cause the connected frame bracket 1 to rotate. The rotation of the frame bracket 1 will cause the rotating shaft 2, the first spring 5 and the second spring 7 on the rotating shaft 2 to rotate relative to the spring fixing bracket 4 and the spring limiting cover 6. As the rear seat flips backward, the cable between the cable pull wheel 3 and the floor lock will tighten as the seat flips backward, thereby causing the floor lock to rotate and retract into the seat base, completing the seat locking. At the same time, one spring between the first spring 5 and the second spring 7 is in a tightened state, accumulating spring potential energy, while the other spring is in a relaxed state, releasing spring potential energy. Since the rotation angles of the two springs are different, the contraction force values of the two springs are different. At this time, the potential energy released by the spring is less than the potential energy accumulated by the spring, so that the seat provides resistance when it rotates backward, reducing the shaking caused by gravity when it flips backward, thereby ensuring the stability of the seat when it flips.
[0035] When the flipping mechanism causes the seat to flip forward, the seat will cause the connected frame bracket 1 to rotate. The rotation of the frame bracket 1 will cause the rotating shaft 2, the first spring 5 and the second spring 7 on the rotating shaft 2 to rotate relative to the spring fixing bracket 4 and the spring limiting cover 6. At this time, the states of the two springs switch with each other. The spring in the tightened state becomes the spring in the relaxed state, and the spring in the relaxed state becomes the spring in the tightened state. At this time, the potential energy released by the spring is greater than the potential energy stored in the spring, which provides assistance for the rotation of the rotating shaft 2. At the same time, as the rear seat flips forward, the cable between the cable wheel 3 and the ground lock will be relaxed as the seat flips forward, thereby causing the ground lock to return to its original position and lock with the latch of the vehicle body. When the rear seat returns to its original position, the forces on both sides of the first spring 5 and the second spring 7 cancel each other out.
[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the present utility model.
Claims
1. A car seat tilting assist mechanism, characterized in that: The system includes a frame connecting bracket (1) connected to the seat frame. One end of the frame connecting bracket (1) is fixedly connected to a rotating shaft (2). The other end of the rotating shaft (2) passes through a pull cable wheel (3), a connecting side wall (42) on one side of a spring fixing bracket (4), a first spring (5), a spring limiting cover (6), a second spring (7), and the connecting side wall (42) on the other side of the spring fixing bracket (4), and is then fixed by a nut (9). The pull cable wheel (3) is engaged with the connecting side wall (42) of the spring fixing bracket (4). The spring fixing bracket (4) has two oppositely installed first springs (5) and second springs (7) between the two side walls (42). The first arm (51) on the two springs is engaged with the first claw (45) on the top of the spring fixing bracket (4). The second arm (52) on the two springs abuts against the rotating shaft (2). A spring limiting cover (6) is provided between the two springs. The spring limiting cover (6) is engaged with the spring fixing bracket (4). The spring fixing bracket (4) is fixedly connected to the bracket (8).
2. The automotive seat flipping assist mechanism according to claim 1, characterized in that: The spring fixing bracket (4) has at least one second claw (44) on the connecting side wall (42) on the side opposite to the pull wire wheel (3). The pull wire wheel (3) has at least one slot (31) at the position opposite to the second claw (44). The pull wire wheel (3) is engaged with the spring fixing bracket (4) through the mutual cooperation of the slot (31) and the second claw (44).
3. The automotive seat flipping assist mechanism according to claim 1, characterized in that: The spring fixing bracket (4) includes a fixing bracket body (41). The fixing bracket body (41) has upwardly bent connecting sidewalls (42) on both sides of the lateral direction. The two connecting sidewalls (42) have connecting holes (43) for the rotating shaft (2) to pass through at their relative positions. The connecting sidewall (42) of the spring fixing bracket (4) opposite to the pull wire wheel (3) is provided with at least one second claw (44). The top of the two connecting sidewalls (42) has two first claws (45) arranged in opposite directions. The two connecting sidewalls (42) have locking arms (46) bent inward toward the fixing bracket body (41) at both ends of the longitudinal direction. The locking arms (46) have a locking slot (47) for locking with the spring limiting cover (6).
4. The automotive seat tilting assist mechanism according to claim 1, characterized in that: The spring limiting cover (6) includes a cover body (61). The cover body (61) has a first clearance opening (62) at the middle position to avoid the pivot (2). The cover body (61) has limiting arms extending laterally at both ends. The two limiting arms on the side of the cover body (61) opposite to the first spring (5) are the first limiting arms (63), and the two limiting arms on the side of the cover body (61) opposite to the second spring (7) are the second limiting arms (64). The first limiting arms (63) and the second limiting arms (64) have the same structure. The top of the two second limiting arms (64) has a first clearance claw (45) and a first support arm (51). The second clearance opening (65) forms a receiving cavity (66) for accommodating the second spring (7) between the two sides below the second clearance opening (65). The spring limiting cover (6) separates the first spring (5) and the second spring (7) on the lateral sides of the cover body (61). The first spring (5) and the second spring (7) are limited by the mutual cooperation of the first limiting arm (63) and the connecting side wall (42) and the mutual cooperation of the second limiting arm (64) and the connecting side wall (42). The outer sides of the first limiting arm (63) and the second limiting arm (64) are equipped with a third claw (67) that engages with the spring fixing bracket (4).
5. The automotive seat flipping assist mechanism according to claim 1, characterized in that: A self-lubricating bushing (10) is provided between the rotating shaft (2) and the connecting hole (43) on the connecting side wall (42).