A power assist mechanism for a car seat reclining

Abstract

The utility model discloses a kind of automobile seat turnover auxiliary power assisting mechanism, it is related to automobile seat technical field, including the connecting bracket being connected with seat framework, connecting bracket is fixedly connected with pivot, pull line runner, line runner support, power assisting spring, spring support, fixed support are equipped on pivot, power assisting spring one end is connected with pivot, the other end is connected with spring support, power assisting spring is equipped with at least two, provide power and damping when seat turnover by the setting of power assisting spring different direction, spring support is fixedly connected with fixed support, fixed support is fixedly connected with vehicle body.The utility model is simple in structure, small in occupied space, convenient to install, by installing power assisting spring different direction, provide power when seat is turned up, provide corresponding damping when falling, make seat turnover more smooth, adjust the torque of spring according to different gravity seat, reduce the motor load required when turnover and the jitter generated when seat falls.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, and in particular to an automotive seat flipping assistance mechanism. Background Technology

[0002] In addition to providing seating, some car rear seats can be folded down to create storage space. Folding down the seats to create a large flat surface and maximize luggage space is a trend in the development of rear seats.

[0003] The main ways to fold down seats include folding the backrest forward, flipping the seat cushion backward and folding the backrest, folding the backrest and flipping the entire seat backward, and flipping the seat to the side. Due to the weight of the seats, the force required to flip them down must overcome the resistance of gravity. Existing flipping assistance mechanisms use a power-assist device to assist in the initial flipping position, reducing the force required by the operator. When the seat's own weight accelerates the flipping, the power-assist device can slow down the flipping speed. However, this type of flipping assistance device has a complex structure, high assembly difficulty, and high manufacturing and processing costs. Furthermore, during the development of rear seats or third-row seats, there is a need to add a seat that flips down into a recess, thus concealing the seat's function. This leads to problems where the motor of the corresponding seat flipping mechanism cannot match the weight of the seat, resulting in poor smoothness during the flipping process, especially for heavy seats, causing vibration and abnormal noises.

[0004] Therefore, it is necessary to design a car seat flipping assist mechanism to improve the above problems. Utility Model Content

[0005] To address the aforementioned problems in the prior art, this utility model provides an assist mechanism for flipping a car seat. By adjusting the torque of the assist springs in different directions, it provides assistance and corresponding damping during seat flipping, making the seat flipping smoother.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A car seat flipping assist mechanism includes a connecting bracket connected to the seat frame, a rotating shaft fixedly connected to the connecting bracket, a cable puller, a cable puller bracket, an assist spring, a spring bracket, and a fixed bracket on the rotating shaft, one end of the assist spring being connected to the rotating shaft and the other end being connected to the spring bracket, at least two assist springs being provided, the assist springs being arranged in different directions to provide assistance and damping when the seat flips, the spring bracket being fixedly connected to the fixed bracket, and the fixed bracket being fixedly connected to the car body.

[0008] As a preferred embodiment of this utility model, one end of the assist spring is inserted into the rotating shaft, and the other end is hooked onto the bayonet of the spring bracket.

[0009] As a preferred embodiment of this utility model, three assist springs are provided, which are tightly assembled together with a small interference fit.

[0010] As a preferred embodiment of this utility model, the reel bracket is provided with a delivery limit rod.

[0011] As a preferred embodiment of this invention, the assist spring is a spiral spring.

[0012] By adopting the above technical solution, the beneficial effects of this utility model compared with the prior art are:

[0013] (1) The present invention provides a car seat flipping assist mechanism with a simple structure, small space occupation and easy installation. By installing assist springs in different directions, when the flipping mechanism flips the seat, it provides assistance when the seat flips upward and provides corresponding damping when it falls, according to the flipping angle and weight of the seat, so as to realize the assistance and corresponding damping when the seat flips, making the seat flipping smoother.

[0014] (2) The present invention provides a car seat flipping assist mechanism that adjusts the spring torque according to the seat with different gravity, so as to ensure the function and performance of seat flipping, reduce the motor load required during flipping and the vibration generated when the seat falls. Attached Figure Description

[0015] Other objects and results of this invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings, and with a more complete understanding of the invention. In the drawings:

[0016] Figure 1 This is a perspective view of an example of this utility model;

[0017] Figure 2 This is an exploded view of an example of this utility model;

[0018] The attached reference numerals include: connecting bracket 1, rotating shaft 2, pull wire wheel 3, wire wheel bracket 4, assist spring 5, spring bracket 6, bayonet 61, fixing bracket 7, and delivery limit rod 8. Detailed Implementation

[0019] The technical solutions of various embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. It should be pointed out that all accompanying drawings are exemplary representations. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0023] Reference Figures 1 to 2 , Figure 1 This is a perspective view of an example of this utility model. Figure 2This is an exploded view of an embodiment of this utility model. This utility model provides a car seat tilting assist mechanism, including a connecting bracket 1, a rotating shaft 2, a cable pull wheel 3, a cable pulley bracket 4, an assist spring 5, a spring bracket 6, a fixed bracket 7, and a delivery limit rod 8. The connecting bracket 1 is connected to the seat frame, preferably by bolts. The rotating shaft 2 is fixedly connected to the connecting bracket 1. The rotating shaft 2 is equipped with the cable pull wheel 3, the cable pulley bracket 4, the assist spring 5, the spring bracket 6, and the fixed bracket 7, and has locking holes. The cable pull wheel 3 engages with a locking block at one end of the cable through the locking holes, allowing the cable to rotate... One end of the pull cable is connected to wheel 3, and the other end of the pull cable is connected to the floor lock under the seat. When the rear seats are flipped backward, the pull cable wheel 3 remains stationary, so the cable between the pull cable wheel 3 and the floor lock 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 are flipped forward, the cable between the pull cable 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 pull cable bracket 4 is cylindrical and sleeved on the shaft 2. The pull cable bracket 4 has an outlet... A cargo limiting rod 8 passes through the reel bracket 4 and is inserted into the rotating shaft 2. The cargo limiting rod 8 is used to limit the cargo delivery angle. One end of the assist spring 5 is connected to the rotating shaft 2, and the other end is connected to the spring bracket 6. At least two assist springs 5 ​​are provided, preferably spiral springs. The different directions of the assist springs 5 ​​provide assistance and damping when the seat is flipped. The spring bracket 6 is fixedly connected to the fixed bracket 7, and the fixed bracket 7 is fixedly connected to the vehicle body. In a specific embodiment, one end of the assist spring 5 is inserted into the rotating shaft 2, and the other end is hooked into the bayonet 61 of the spring bracket 6. In one specific embodiment, three assist springs 5 ​​are provided, which are tightly assembled together with a small interference fit. When the seat flips from the designed position from bottom to top, the pivot 2 rotates, and one spring (the middle spring) relaxes to provide assistance for the seat to flip upward. As the torque required for the seat to flip decreases, the torque decreases. When the seat falls downward, the assist springs on both sides tighten, and the torque gradually increases to provide damping for the seat to fall, reduce the falling speed of the seat, and adjust the smoothness and stability of the falling process. The same applies when flipping out of the pit, so as to avoid the seat from shaking and making abnormal noises during the flipping process.

[0024] The following will refer to Figures 1 to 2 The working principle of this utility model will be explained.

[0025] When the flipping mechanism causes the entire seat to flip backward, the seat will cause the connected bracket 1 to rotate. The rotation of the connecting bracket 1 will cause the rotating shaft 2 and the assist spring 5 on the rotating shaft 2 to rotate relative to the spring bracket 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 locking of the seat. At the same time, among the assist springs 5 ​​set in different directions, one spring 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 flipping backward, thereby ensuring the stability of the seat when flipping.

[0026] When the flipping mechanism causes the seat to flip forward, the seat will cause the connecting bracket 1 connected to it to rotate. The rotation of the connecting bracket 1 will cause the rotating shaft 2 and the assist spring 5 on the rotating shaft 2 to rotate relative to the spring bracket 6. At this time, the state of the assist spring 5 switches from the state when flipping backward. 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 pull 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.

[0027] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A car seat tilting assist mechanism, characterized in that, It includes a connecting bracket that connects to the seat frame, a connecting bracket that is fixedly connected to a rotating shaft, a pull wire wheel, a pull wire bracket, a booster spring, a spring bracket, and a fixed bracket on the rotating shaft, one end of the booster spring being connected to the rotating shaft and the other end being connected to the spring bracket, and at least two booster springs are provided, which provide assistance and damping when the seat is flipped by setting the booster springs in different directions, the spring bracket being fixedly connected to the fixed bracket, and the fixed bracket being fixedly connected to the vehicle body.

2. The automotive seat flipping assist mechanism according to claim 1, characterized in that, One end of the assist spring is inserted into the rotating shaft, and the other end is hooked onto the spring bracket's bayonet.

3. The automotive seat tilting assist mechanism according to claim 1, characterized in that, There are three power springs, which are tightly assembled together with a small interference fit.

4. The automotive seat tilting assist mechanism according to claim 1, characterized in that, The reel bracket is equipped with a delivery limit bar.

5. The automotive seat flipping assist mechanism according to claim 1, characterized in that, The assist spring is a spiral spring.

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