A bidirectional sliding energy-absorbing slide rail for a car seat

Abstract

The application discloses a bidirectional sliding energy-absorbing slide rail for an automobile seat, which comprises a fixing mechanism, an adjusting mechanism and an energy-absorbing mechanism; the fixing mechanism is connected with the adjusting mechanism; the adjusting mechanism is connected with the energy-absorbing mechanism; the energy-absorbing mechanism comprises an upper slide rail and a first steel sheet deformation unit; the first surface of the upper slide rail is provided with an opening; the first steel sheet deformation unit is fixedly installed on the upper slide rail; the first steel sheet deformation unit comprises short-side limiting blocks, energy-absorbing steel sheets and long-side limiting blocks; the short-side limiting blocks and the long-side limiting blocks are fixedly installed on the first surface of the upper slide rail and are arranged on the two sides of the opening of the upper slide rail respectively; the energy-absorbing steel sheets are arranged between the short-side limiting blocks and the long-side limiting blocks and are fixedly connected with the short-side limiting blocks at one end. The bidirectional sliding energy-absorbing slide rail can consider both front collision and rear collision conditions, has the advantages of lower structure cost, simplicity and reliability, better protection effect and easy maintenance and replacement.

Description

Technical Field

[0001] This invention belongs to the field of automotive passive safety technology, and specifically relates to a bidirectional sliding energy-absorbing slide rail for automotive seats. Background Technology

[0002] A slide rail is a device used to guide and support the movement of objects, commonly used in machinery, industrial production lines, and other applications requiring linear motion. Slide rails provide stable guidance and support, ensuring smooth movement and reducing friction and vibration. Through appropriate design and material selection, slide rails can achieve high load-bearing capacity and wear resistance to suit various applications.

[0003] However, in some mechanical equipment that requires high speed, high impact or high load, objects will generate large impact forces and vibrations during the sliding process, which may affect the mechanical equipment and workpieces, or even damage the equipment and cause injury to personnel.

[0004] The existing safety protection measures for slide rails mainly include the following:

[0005] Buffer pads: Buffer pads can absorb impact and vibration energy through compression or deformation. One or more buffer pads are installed at the ends of the slide rails or at locations requiring energy absorption to reduce and balance impacts and vibrations during sliding. However, buffer pads often need to be replaced after absorbing energy, have a relatively short lifespan, require regular maintenance and replacement, and are costly.

[0006] Hydraulic or pneumatic damping slides: These are energy-absorbing slides that utilize the viscous damping of liquids or gases to absorb energy. These slides require additional piping, making installation and commissioning more complex. Furthermore, pneumatic dampers are susceptible to changes in ambient temperature and gas pressure, potentially leading to unstable energy absorption. Because this method alters energy absorption by adjusting fluid pressure, the slide's start-up threshold and energy absorption cannot be adjusted to different modes in both directions.

[0007] Spring-damped vibration-absorbing slide rails: These energy-absorbing slide rails absorb and reduce vibration energy through the compression and release of springs and dampers. Damping primarily employs friction damping. Under large impact forces, the springs in spring-damped slide rails are prone to overload, deformation, or even breakage, thus affecting energy absorption. Adjustment and maintenance of spring-damped slide rails are relatively difficult, requiring careful attention to spring tension and elasticity failure. Friction dampers may generate significant friction during use, necessitating frequent inspection and lubrication to ensure proper operation. Furthermore, the starting threshold and energy absorption of this type of energy-absorbing slide rail cannot be adjusted to different modes in either direction.

[0008] Existing automotive seat energy-absorbing rails suffer from problems such as large mass, high cost, inability to handle both frontal and rear-end collisions, and a narrow protection range for collision speeds. Summary of the Invention

[0009] To address the aforementioned problems, this invention discloses a bidirectional sliding energy-absorbing slide rail for automobile seats, comprising: a fixing mechanism, an adjusting mechanism, and an energy-absorbing mechanism;

[0010] The fixing mechanism is connected to the adjusting mechanism;

[0011] The adjustment mechanism is connected to the energy absorption mechanism;

[0012] The energy absorption mechanism includes an upper slide rail and a first steel sheet deformation unit;

[0013] The first surface of the upper slide rail is provided with an opening;

[0014] The first steel sheet deformation unit is fixedly installed on the upper slide rail;

[0015] The first steel sheet deformation unit includes a short side limiting block, an energy-absorbing steel sheet, and a long side limiting block;

[0016] Both the short-side limiting block and the long-side limiting block are fixedly installed on the first surface of the upper slide rail, and are respectively located on both sides of the opening of the upper slide rail;

[0017] The energy-absorbing steel sheet is disposed between the short side limiting block and the long side limiting block, and one end is fixedly connected to the short side limiting block.

[0018] Furthermore, the fixing mechanism includes a lower slide rail;

[0019] The two ends of the lower rail are fixedly connected to the car floor.

[0020] Furthermore, the adjustment mechanism includes a guide rail support, a guide rail, a guide rail gearbox, and a lead screw motor;

[0021] The guide rail support is installed inside the lower rail;

[0022] Both ends of the guide rail are connected to the guide rail support base respectively;

[0023] The guide rail gearbox is connected to the guide rail;

[0024] The lead screw motor is connected to the guide rail gearbox.

[0025] Furthermore, the energy-absorbing mechanism also includes: a second steel sheet deformation unit;

[0026] The second steel sheet deformation unit is fixedly installed on the upper slide rail;

[0027] The first steel sheet deformation unit and the second steel sheet deformation unit have the same structure and are centrally symmetrical.

[0028] Furthermore, the first steel sheet deformation unit also includes: a traction column;

[0029] The traction column is fixedly installed on the adjustment mechanism;

[0030] The other end of the energy-absorbing steel sheet passes around the traction column.

[0031] Furthermore, the energy-absorbing steel sheet includes a first steel sheet and a second steel sheet;

[0032] The first steel sheet and the second steel sheet are connected, and the first steel sheet is wider than the second steel sheet;

[0033] The first steel plate bypasses the traction column.

[0034] Furthermore, the first steel sheet deformation unit includes a short side limiting block, an energy-absorbing steel sheet, a long side limiting block, and a groove component;

[0035] The upper slide rail is connected to the adjustment mechanism;

[0036] The grooved component has a groove and is connected to the upper slide rail;

[0037] Both the short-side limiting block and the long-side limiting block are fixedly installed on the grooved part and are located on both sides of the groove, respectively;

[0038] The long-side limiting block is provided with a U-shaped opening;

[0039] The energy-absorbing steel sheet is disposed between the short side limiting block and the long side limiting block, and one end is fixedly connected to the short side limiting block.

[0040] Furthermore, the first steel sheet deformation unit also includes: a traction column;

[0041] One end of the traction column is set in the groove of the grooved component and is slidably connected to the grooved component;

[0042] The other end of the energy-absorbing steel sheet passes around the traction column and is connected to the U-shaped opening of the long side limiting block.

[0043] Furthermore, the length of the groove is 30-200mm.

[0044] Furthermore, the energy-absorbing steel sheet is U-shaped.

[0045] Compared with the prior art, the beneficial effects of the present invention are: the bidirectional sliding energy-absorbing slide rail of the present invention is used as a slide rail under normal circumstances; in the event of a rear-end collision or a frontal collision, it can absorb impact force and vibration energy, reduce impact and vibration, and reduce the risk of occupant injury; it can take into account both frontal and rear-end collision conditions, and has the advantages of lower structural cost, simplicity and reliability, better protection effect, and easy maintenance and replacement.

[0046] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 A perspective view of a bidirectional sliding energy-absorbing slide rail according to Embodiment 1 of the present invention is shown;

[0049] Figure 2 A top view of the bidirectional sliding energy-absorbing slide rail according to Embodiment 1 of the present invention is shown;

[0050] Figure 3 A schematic diagram of the energy-absorbing steel sheet structure according to Embodiment 1 of the present invention is shown;

[0051] Figure 4 A perspective view of a bidirectional sliding energy-absorbing slide rail according to Embodiment 2 of the present invention is shown;

[0052] Figure 5 A top view of the bidirectional sliding energy-absorbing slide rail according to Embodiment 2 of the present invention is shown.

[0053] Reference numerals in the attached drawings: 1. Groove part; 2. Lower slide rail; 3. Guide rail support seat; 4. Guide rail; 5. Short side limit block; 6. Traction column; 7. Energy-absorbing steel sheet; 8. Long side limit block; 9. Guide rail gearbox; 10. Upper slide rail. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] like Figure 1 As shown, the present invention proposes a bidirectional sliding energy-absorbing slide rail for automobile seats, comprising: a fixing mechanism, an adjusting mechanism, and an energy-absorbing mechanism;

[0056] The fixing mechanism is fixedly installed on the vehicle floor;

[0057] The fixing mechanism is connected to the adjusting mechanism;

[0058] The adjustment mechanism is connected to the energy absorption mechanism;

[0059] The energy-absorbing mechanism is connected to the car seat.

[0060] A fixing mechanism is used to fix the energy-absorbing slide rail device to the car floor.

[0061] The adjustment mechanism is used to adjust the fore-and-aft direction of the sliding seat under normal operating conditions.

[0062] Energy-absorbing mechanisms are used to deform and absorb collision energy under collision conditions.

[0063] This invention discloses a bidirectional sliding energy-absorbing rail for automotive seats. Under normal operating conditions, the structure can provide a certain load force. When the rail load exceeds a certain threshold, the structure can be destroyed to dissipate energy, making the device safer and more reliable. In the event of a rear-end collision or a frontal collision, it can absorb impact force and vibration energy, reduce impact and vibration, and lower the risk of injury to occupants. It can accommodate both frontal and rear-end collisions and has the advantages of lower structural cost, simplicity and reliability, better protection effect, and easy maintenance and replacement.

[0064] In some embodiments, the fixing mechanism includes a lower slide rail 2;

[0065] The two ends of the lower rail 2 are fixedly connected to the car floor.

[0066] The lower rail 2 is used to support the adjustment mechanism and the energy absorption mechanism.

[0067] In some embodiments, the adjustment mechanism includes a guide rail support 3, a guide rail 4, and a guide rail gearbox 9;

[0068] The guide rail support 3 is disposed inside the lower slide rail 2; for example, two guide rail support 3 are disposed inside the lower slide rail 2 by means of bolt connection, and are located at the left and right ends respectively;

[0069] The guide rail 4 is fixedly connected to a guide rail support 3 at both ends; for example, the two are connected by bolts.

[0070] The guide rail gearbox 9 is connected to the guide rail 4.

[0071] Guide rail support 3 is used to support guide rail 4.

[0072] Guide rail 4 is used to convert the rotary motion of the lead screw motor into translational motion to adjust the seat position.

[0073] The guide rail gearbox 9 is used to change the transmission direction and transmission ratio in order to arrange the lead screw motor.

[0074] In some embodiments, the adjustment mechanism further includes: a lead screw motor;

[0075] The lead screw motor and the guide rail gearbox 9 are connected by gears.

[0076] A lead screw motor is used to provide the rotational motion required for adjusting guide rail 4.

[0077] In some embodiments, the energy-absorbing mechanism includes an upper slide rail 10, a first steel sheet deformation unit, and a second steel sheet deformation unit;

[0078] An opening is provided on the upper surface of the upper slide rail 10;

[0079] The first steel sheet deformation unit and the second steel sheet deformation unit are both fixedly installed on the upper slide rail 10;

[0080] The first steel sheet deformation unit and the second steel sheet deformation unit have the same structure and are centrally symmetrical.

[0081] The upper slide rail 10 is used to support the steel sheet deformation unit and the seat.

[0082] The first steel sheet deformation unit is used to provide sliding energy absorption in the event of a frontal collision with a car.

[0083] The second steel sheet deformation unit is used to provide energy absorption in the event of a rear-end collision.

[0084] The bidirectional sliding energy-absorbing rail, through the first and second steel sheet deformation units arranged in opposite directions, can take into account both frontal and rear-end collisions, absorbing impact and vibration energy from both directions, making it more practical and providing better protection.

[0085] In some embodiments, the first steel sheet deformation unit includes a short side limiting block 5, an energy-absorbing steel sheet 7, and a long side limiting block 8;

[0086] Both the short side limiting block 5 and the long side limiting block 8 are fixedly installed on the upper surface of the upper slide rail 10, and are respectively located on both sides of the opening of the upper slide rail 10.

[0087] The energy-absorbing steel sheet 7 is disposed between the short-side limiting block 5 and the long-side limiting block 8, and one end is fixedly connected to the short-side limiting block 5. For example, the short-side limiting block 5 and the energy-absorbing steel sheet 7 are connected by bolts or welding.

[0088] For example, such as Figure 2 As shown, the short side limiting block 5 on the right is located on the upper side of the opening of the upper slide rail 10, and the long side limiting block 8 on the right is located on the lower side of the opening of the upper slide rail 10.

[0089] The short side limiting block 5 is used to fix the short side of the energy-absorbing steel sheet 7;

[0090] Energy-absorbing steel sheet 7 is used to deform and absorb collision energy;

[0091] Long side limiting block 8 is used to limit the long side of the energy-absorbing steel sheet 7.

[0092] In some embodiments, the first steel sheet deformation unit further includes: a traction column 6;

[0093] The traction column 6 is fixedly installed on the upper surface of the guide rail gearbox 9 of the adjustment mechanism;

[0094] The other end of the energy-absorbing steel sheet 7 passes around the traction column 6.

[0095] The car seat is connected to the through hole on the upper surface of the upper slide rail 10 by bolts.

[0096] Traction column 6 is used to induce bending deformation of energy-absorbing steel sheet 7.

[0097] In some embodiments, the upper end of the traction column 6 abuts against the bottom end of the car seat to support the car seat.

[0098] like Figure 3 As shown, in some embodiments, the energy-absorbing steel sheet 7 includes a first steel sheet and a second steel sheet;

[0099] The first steel sheet is connected to the second steel sheet, and the width of the first steel sheet is greater than the width of the second steel sheet;

[0100] The first steel plate passes around the traction column 6.

[0101] The energy-absorbing steel sheet 7, with the above design, can provide a starting load.

[0102] For example, the first steel sheet and the second steel sheet can be designed to be integrally formed.

[0103] When an impact occurs, the car seat moves the upper slide rail 10, which in turn causes the energy-absorbing steel sheet 7 and the traction column 6 to shift. The traction column 6 then pulls the energy-absorbing steel sheet 7 to deform, thus absorbing the energy generated by the impact.

[0104] The working principle of the bidirectional sliding energy-absorbing slide rail in Embodiment 1 of the present invention is as follows:

[0105] 1. Under normal circumstances, the lead screw motor drives the guide rail 4 to rotate, which in turn drives the guide rail gearbox 9 to move in both directions. The guide rail gearbox 9 and the upper slide rail 10 are connected by energy-absorbing steel sheets 7. The bidirectional energy-absorbing steel sheet structure has a certain starting load threshold and will not be damaged under normal conditions, allowing the slide rail to operate normally.

[0106] 2. When the slide rail suddenly stops or accelerates, the device (car seat) on the guide rail gearbox 9 applies a load to the bidirectional energy-absorbing steel sheet 7 under the action of impact load. When the load exceeds a certain threshold, the traction column 6 pulls the energy-absorbing steel sheet 7 to deform. At this time, the upper slide rail 10 and the guide rail gearbox 9 are displaced.

[0107] 3. Since the loads on the bidirectional energy-absorbing steel sheet 7 are independent in the two directions, when the load on the slide rail in one direction exceeds the threshold, only one of the two energy-absorbing steel sheets 7 will deform and absorb energy. Therefore, the failure of the slide rail in both directions can be protected by the bidirectional energy-absorbing steel sheet 7.

[0108] 4. Intelligent Adjustment of Bidirectional Sliding Energy-Absorbing Rail: The energy absorption thresholds in both directions can be individually adjusted by modifying the thickness of the energy-absorbing steel sheet 7 and the radius of the rotating shaft, thereby achieving different translational energy absorption load thresholds for the bidirectional sliding rail. The structural dimensions of the energy-absorbing steel sheet 7 can be adjusted to achieve the starting load design of the sliding rail.

[0109] like Figure 4 As shown, in some other design configurations of the first steel sheet deformation unit, the first steel sheet deformation unit includes a short side limiting block 5, an energy-absorbing steel sheet 7, a long side limiting block 8, and a groove 1.

[0110] The upper slide rail 10 is fixedly connected to the guide rail gearbox 9 of the adjustment mechanism; for example, the two are connected by bolts.

[0111] The grooved part 1 is provided with a groove, and the grooved part 1 is fixedly connected to the upper slide rail 10;

[0112] The short side limiting block 5 and the long side limiting block 8 are both fixedly installed on the groove part 1 and are located on both sides of the groove respectively; for example, the short side limiting block 5 and the long side limiting block 8 can be connected to the groove part 1 by welding, bolting or integral molding.

[0113] The long-side limiting block 8 is provided with a U-shaped opening;

[0114] The energy-absorbing steel sheet 7 is disposed between the short side limiting block 5 and the long side limiting block 8, and one end is fixedly connected to the short side limiting block 5.

[0115] For example, such as Figure 5 As shown, the short side limiting block 5 on the right is located on the upper side of the groove, and the long side limiting block 8 on the right is located on the lower side of the groove.

[0116] The groove 1 is used to provide a track for the traction column 6 to slide in a directional manner.

[0117] The U-shaped opening is used to guide the deformation direction of the long side of the energy-absorbing steel sheet 7.

[0118] In some embodiments, the first steel sheet deformation unit further includes: a traction column 6;

[0119] The lower end of the traction column 6 is set in the groove of the grooved part 1 and is slidably connected to the grooved part 1;

[0120] The other end of the energy-absorbing steel sheet 7 passes around the traction post 6 and is connected to the U-shaped opening of the long-side limiting block 8, which can provide a starting load. For example, the energy-absorbing steel sheet 7 is connected to the U-shaped opening by bolts.

[0121] The traction column 6 is located between the guide rail gearbox 9 and the energy-absorbing steel sheet 7.

[0122] The top of the traction column 6 is fixedly connected to the car seat.

[0123] In some embodiments, the length of the groove in the groove member 1 is 30-200mm.

[0124] In some embodiments, the energy-absorbing steel sheet 7 is U-shaped, with the bottom of the U-shape abutting against the traction column 6. When the load exceeds a threshold, the traction column 6 quickly pulls the energy-absorbing steel sheet 7 to absorb the energy generated by the impact. The energy-absorbing steel sheet 7 can provide a constant load of 700-6000N.

[0125] When an impact occurs, the car seat and the upper slide rail 10 are displaced. The car seat moves the traction column 6, and the traction column 6 pulls the energy-absorbing steel plate 7 on the same side to deform and absorb the energy generated by the impact.

[0126] The present invention proposes a bidirectional sliding energy-absorbing slide rail for automobile seats. In the event of impact or collision, the energy-absorbing steel sheet 7 deforms to absorb energy and prevent damage to the slide rail and the device supporting the slide rail. It is a device that protects the slide rail. By arranging two steel sheet deformation units in opposite directions, the slide rail can achieve translational energy absorption in both directions.

[0127] Although the present invention 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 of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bidirectional sliding energy-absorbing slide rail for automobile seats, characterized in that, include: Fixing mechanism, adjusting mechanism, and energy absorption mechanism; The fixing mechanism is connected to the adjusting mechanism; The adjustment mechanism is connected to the energy absorption mechanism; The energy absorption mechanism includes an upper slide rail (10) and a first steel sheet deformation unit; The upper slide rail (10) has an opening on its first surface; The first steel sheet deformation unit is fixedly installed on the upper slide rail (10); The first steel sheet deformation unit includes a short side limiting block (5), an energy-absorbing steel sheet (7), and a long side limiting block (8). The short side limiting block (5) and the long side limiting block (8) are both fixedly installed on the first surface of the upper slide rail (10) and are respectively set on both sides of the opening of the upper slide rail (10); The energy-absorbing steel sheet (7) is disposed between the short side limiting block (5) and the long side limiting block (8), and one end is fixedly connected to the short side limiting block (5); The energy absorption mechanism further includes: a second steel sheet deformation unit; The second steel sheet deformation unit is fixedly installed on the upper slide rail (10); The first steel sheet deformation unit and the second steel sheet deformation unit have the same structure and are centrally symmetrical; The first steel sheet deformation unit includes a short side limiting block (5), an energy-absorbing steel sheet (7), a long side limiting block (8), and a groove (1). The upper slide rail (10) is connected to the adjustment mechanism; The grooved part (1) is provided with a groove and is connected to the upper slide rail (10); The short side limiting block (5) and the long side limiting block (8) are both fixedly installed on the groove part (1) and are located on both sides of the groove respectively; The long side limiting block (8) is provided with a U-shaped opening; The energy-absorbing steel sheet (7) is disposed between the short side limiting block (5) and the long side limiting block (8), and one end is fixedly connected to the short side limiting block (5); The first steel sheet deformation unit also includes: a traction column (6); One end of the traction column (6) is set in the groove of the grooved part (1) and is slidably connected to the grooved part (1); The other end of the energy-absorbing steel sheet (7) passes around the traction column (6) and is connected to the U-shaped opening of the long side limiting block (8).

2. The bidirectional sliding energy-absorbing slide rail for automobile seats according to claim 1, characterized in that, The fixing mechanism includes a lower slide rail (2); The two ends of the lower rail (2) are fixedly connected to the car floor.

3. The bidirectional sliding energy-absorbing slide rail for automobile seats according to claim 2, characterized in that, The adjustment mechanism includes a guide rail support (3), a guide rail (4), a guide rail gearbox (9), and a lead screw motor; The guide rail support (3) is installed inside the lower rail (2); The two ends of the guide rail (4) are respectively connected to the guide rail support (3); The guide rail gearbox (9) is connected to the guide rail (4); The lead screw motor is connected to the guide rail gearbox (9).

4. The bidirectional sliding energy-absorbing slide rail for automobile seats according to claim 1, characterized in that, The energy-absorbing steel sheet (7) includes a first steel sheet and a second steel sheet; The first steel sheet and the second steel sheet are connected, and the first steel sheet is wider than the second steel sheet; The first steel plate passes around the traction column (6).

5. The bidirectional sliding energy-absorbing slide rail for automobile seats according to claim 1, characterized in that, The length of the groove is 30-200mm.

6. The bidirectional sliding energy-absorbing slide rail for automobile seats according to claim 1, characterized in that, The energy-absorbing steel sheet (7) is U-shaped.

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