Adjustable elastic supporting framework for automobile seat

Abstract

The adjustable elastic supporting framework comprises a framework body and a mounting rod arranged on the framework body, an elastic supporting assembly is arranged on the mounting rod and comprises two hanging steel wires and a pull rope, the upper ends of the hanging steel wires are connected to the mounting rod, and the lower ends of the hanging steel wires are connected to the framework body; an adjusting assembly is arranged on the framework body, the two ends of the pull rope are both connected to the adjusting assembly, the adjusting assembly comprises a fixing plate and an adjusting knob, and a tightening structure and a reset structure are arranged in the adjusting knob; the pull rope is controlled to be tightened through the adjusting mechanism, so that the pull rope is tightened on the hanging steel wire, the reset mechanism can reset the pull rope after the pull rope is tightened, the pull rope is in a loose state on the hanging steel wire, and by adjusting tightening or loosening of the pull rope, different requirements of passengers with different body types during sitting are met through adjustment; and the pull rope is light in weight, the state of the pull rope is manually controlled, and long-time use of the elastic supporting framework of the automobile seat can be guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field related to vehicle seats, and particularly to an adjustable elastic support framework for vehicle seats. Background Art

[0002] Vehicle seats are one of the main components of vehicle parts. For vehicle seats, not only the driving requirements need to be met, but also the safety, comfort, aesthetics, etc. of the seats have become important factors in winning the market competition. When designing vehicle seats, in order to adapt to different occupants and meet the comfort requirements of passengers with different postures and body types, the angle of the seat back is generally adjustable. To further improve the comfort of the seats, some seats also add the angle adjustment function for the neck and shoulder parts of the seat back. The elastic support framework of vehicle seats is an important factor to ensure the comfort of vehicle seats.

[0003] Most of the supports inside the traditional elastic support framework of vehicle seats are in a "field" - shaped mesh structure composed of elastic steel wires. The steel wires generate deformation under the pressure of passengers to achieve the purpose of shock absorption and comfort. Its ability of elastic deformation cannot be actively adjusted, and with the increase of the service life, the ability of elastic deformation will gradually decay, the support for passengers will weaken, and it cannot adapt to user groups with different body types. Summary of the Invention

[0004] The present invention aims to provide an adjustable elastic support framework for vehicle seats, which can adjust the tension degree of the elastic support framework according to the body type, comfort requirements, driving habits, etc. of users, so as to improve the adaptability.

[0005] For this purpose, the technical solution adopted by the present invention is as follows: An adjustable elastic support framework for vehicle seats includes a framework body, an elastic support assembly is arranged on the framework body. The elastic support assembly includes two suspension steel wires symmetrically arranged along the middle line position of the framework body and a pull rope wound cross -wise around the two suspension steel wires. The upper and lower ends of the suspension steel wires are respectively connected to the framework body. An adjustment assembly for adjusting the elastic support assembly is arranged on the framework body. Both ends of the pull rope are connected to the adjustment assembly. The adjustment assembly includes a mounting plate fixedly connected to the framework body and an adjustment knob arranged on the mounting plate for adjusting the tightening or resetting of the pull rope. A tightening structure for adjusting the tightening of the pull rope and a reset structure for the reset of the pull rope are arranged inside the adjustment knob.

[0006] As a preference of the above - mentioned scheme, the tightening structure includes a ratchet wheel arranged inside the adjustment knob and a rotating rod fixedly connected to the ratchet wheel. One end of the rotating rod passes through a fixing plate and is fixedly connected with a torsion cover, and the other end is rotatably connected to the adjustment knob. A pawl matching the ratchet wheel is also arranged inside the adjustment knob, and both ends of the pull rope are fixedly connected to the ratchet wheel.

[0007] Further preferably, the reset structure includes a fixed sleeve arranged in the adjusting knob and a sliding sleeve slidably connected in the fixed sleeve, one end of the sliding sleeve is connected to the rotating rod bearing, a mounting groove for installing the bearing is provided in the sliding sleeve, at least one block for limiting the rotation of the sliding sleeve in the fixed sleeve is provided on the outer periphery of the sliding sleeve, and a sliding groove for the block to slide up and down is provided in the fixed sleeve.

[0008] Further preferably, the suspension steel wire is formed into a wavy shape by bending an elastic steel wire, and a drawstring fixing sleeve for fixing the drawstring is provided on the wave crest on the side where the two suspension steel wires are close to each other.

[0009] Further preferably, the pull rope fixing sleeve includes an "L"-shaped sleeve portion arranged at the peak of the suspension wire and an "L"-shaped mounting portion connected to the sleeve portion, the mounting portion and the sleeve portion are relatively arranged to form a rhombus, one end of the mounting portion is fixedly connected to the sleeve portion, and a gap is left between the other end and the sleeve portion for the pull rope to be squeezed in, the outer surface of the sleeve portion is smooth, and the pull rope fixing sleeve is injection molded.

[0010] More preferably, the draw cord is made of high-strength elastic wear-resistant fiber.

[0011] Further preferably, the skeleton body includes sheet metal skeletons symmetrically arranged on both sides and a "U"-shaped steel pipe connector welded to the upper end of the sheet metal skeleton, a mounting rod is transversely arranged on the connector, and the upper end of the suspension wire is connected to the mounting rod.

[0012] Further preferably, the upper end and the lower end of the suspension wire are respectively welded to the mounting rod and the frame body through a fixing plate, and the fixing plate is formed by bending sheet metal.

[0013] The beneficial effects of the present invention are as follows: the drawstring is tightened by controlling the adjustment mechanism so that it is taut on the suspension wire; a reset mechanism is also provided in the adjustment knob, which can reset the drawstring after it is tightened so that it is in a relaxed state on the suspension wire; the drawstring is adjusted to be tight or loose so as to meet the different needs of passengers of different body shapes when riding; and the drawstring is light in weight and the state of the drawstring is manually controlled, which can ensure the long-term use of the elastic support frame of the car seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention.

[0015] Figure 2 It is a structural schematic diagram of the draw cord fixing sleeve in the present invention.

[0016] Figure 3 It is a schematic diagram of the use state of the adjusting knob in the present invention.

[0017] Figure 4 It is a schematic diagram of the internal structure of the adjusting knob when the pull rope is in a tightened state in the present invention.

[0018] Figure 5 It is a schematic diagram of the internal structure of the adjusting knob in the pull rope reset state of the present invention. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1-5 As shown, an adjustable elastic support frame for a car seat includes a frame body 7, on which an elastic support assembly is arranged, the elastic support assembly includes two suspension wires 1 symmetrically arranged along the midline of the frame body 7 and a pull rope 3 cross-wound around the two suspension wires 1, the upper and lower ends of the suspension wires 1 are respectively connected to the frame body 7, the frame body 7 is provided with an adjustment assembly for adjusting the elastic support assembly, both ends of the pull rope 3 are connected to the adjustment assembly, the adjustment assembly includes a mounting plate 5 fixedly connected to the frame body 7 and an adjustment knob 6 arranged on the mounting plate 5 for adjusting the tension or reset of the pull rope 3, and a tightening structure for adjusting the tension of the pull rope 3 and a reset structure for resetting the pull rope 3 are arranged in the adjustment knob 6.

[0021] The tightening structure includes a ratchet 601 disposed in the adjusting knob 6 and a rotating rod 602 fixedly connected to the ratchet 601. One end of the rotating rod 602 passes through the fixing plate 4 and is fixedly connected to a twist cover 603, and the other end is rotatably connected to the adjusting knob 6. A ratchet 604 matching the ratchet 601 is also disposed in the adjusting knob 6. Both ends of the pull rope 3 are fixedly connected to the ratchet 601. The ends of the pull rope 3 are fixedly connected to the ratchet 601, the ratchet 601 is driven to rotate by the rotating rod 602, and the ratchet 601 is fixed by the ratchet 604. When the twist cover 603 is rotated, the pull rope 3 is tightened.

[0022] The reset structure includes a fixed sleeve 605 arranged in the adjusting knob 6 and a sliding sleeve 606 slidably connected in the fixed sleeve 605, one end of the sliding sleeve 606 is connected to the bearing of the rotating rod 602, a mounting groove for installing the bearing is arranged in the sliding sleeve 606, at least one block 607 for limiting the rotation of the sliding sleeve 606 in the fixed sleeve 605 is arranged on the outer periphery of the sliding sleeve 606, and a sliding groove 608 for the block 607 to slide up and down is arranged in the fixed sleeve 605. By connecting the tightening structure to the bearing of the sliding sleeve 606, and the bearing is installed in the sliding sleeve 606, the sliding groove 608 set in the fixed sleeve 605 and the block 607 set on the sliding sleeve 606 are used for limiting, so as to prevent the sliding sleeve 606 from rotating in the fixed sleeve 605 when the tightening structure rotates. The sliding sleeve 606 slides back and forth in the fixed sleeve 605, thereby driving the tightening structure to slide back and forth in the adjusting knob 6. When it is necessary to loosen the pull rope 3 to make it in a relaxed state, the twist cover 603 is pulled backwards so that the ratchet teeth of the ratchet 601 are disengaged from the pawl 604. When the pawl 604 cannot limit the ratchet 601, the two ends of the pull rope 3 pull the ratchet 601 to reset, and the pull rope 3 enters a relaxed state.

[0023] The suspension steel wire 1 is formed into a wave shape by bending an elastic steel wire, and a draw rope fixing sleeve 2 for fixing a draw rope 3 is arranged on the wave crest near one side of the two suspension steel wires 1. The suspension steel wire 1 is arranged in a wave shape to improve the strength of the suspension steel wire 1, and the draw rope fixing sleeve 2 is arranged on the wave crest near one side, so that the draw rope 3 is installed and wound around the suspension steel wire 1.

[0024] The pull rope fixing sleeve 2 includes an "L"-shaped sleeve portion 201 arranged at the wave crest of the suspension steel wire 1 and an "L"-shaped mounting portion 202 connected to the sleeve portion 201. The mounting portion 202 and the sleeve portion 201 are arranged relative to each other to form a rhombus. One end of the mounting portion 202 is fixedly connected to the sleeve portion 201, and a gap for the pull rope 3 to squeeze in is left between the other end and the sleeve portion 201. The outer surface of the sleeve portion 201 is smooth, and the pull rope fixing sleeve 2 is injection molded. The outer surface of the sleeve portion 201 is smooth, and the pull rope fixing sleeve 2 is injection molded, which can reduce the friction force on the pull rope 3 when the pull rope 3 is tightened or reset. The material of the sleeve portion 201 is high-strength plastic or metal with a smooth surface. The pull rope fixing sleeve 2 is injection molded, and the suspension steel wire 1 is bent into a wavy shape and then placed in a mold, and the pull rope fixing sleeve 2 is injection molded. The one-piece injection molding can ensure that the pull rope fixing sleeve 2 and the suspension steel wire 1 are firmly connected.

[0025] The drawstring 3 is made of high-strength elastic wear-resistant fiber. When installed, the drawstring 3 can be inserted into the gap left on the drawstring fixing sleeve 2 by external force with the help of its own elasticity, and when the drawstring 3 is wound around the suspension wire 1, it will not fall out of the drawstring fixing sleeve 2 from the gap due to its own gravity.

[0026] The skeleton body includes sheet metal skeletons symmetrically arranged on both sides and a "U"-shaped steel pipe connector welded to the upper end of the sheet metal skeleton. A mounting rod 8 is transversely arranged on the connector, and the upper end of the suspension wire 1 is connected to the mounting rod 8.

[0027] The upper end and the lower end of the suspension wire 1 are respectively welded to the mounting rod 8 and the frame body 7 through the fixing plate 4, and the fixing plate 4 is formed by bending the sheet metal. The strength of the fixing plate 4 is ensured by bending the sheet metal, and then the suspension wire 1 is welded to the fixing plate 4 to ensure the strength of the suspension wire 1.

[0028] The adjustable elastic support frame can be used on the seat back or on the seat cushion to ensure riding comfort.

[0029] The drawstring 3 is tightened by controlling the adjusting mechanism so that it is taut on the suspension wire 1. A resetting mechanism is also provided in the adjusting knob 6. After the drawstring 3 is tightened, the drawstring 3 can be reset so that the drawstring 3 is in a relaxed state on the suspension wire 1. By adjusting the tension or relaxation of the drawstring 3, the different needs of passengers of different body shapes when riding can be met. In addition, the drawstring 3 is light in weight and the state of the drawstring 3 is manually controlled, which can ensure the long-term use of the elastic support frame of the car seat.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An adjustable elastic support frame for a car seat, comprising a frame body (7), characterized in that: The skeleton body (7) is provided with an elastic support component, and the elastic support component includes two suspension steel wires (1) symmetrically arranged along the center line of the skeleton body (7) and a pull rope (3) wound around the two suspension steel wires (1) in a cross shape, the upper and lower ends of the suspension steel wires (1) are respectively connected to the skeleton body (7), and the skeleton body (7) is provided with an adjustment component for adjusting the elastic support component, and the two ends of the pull rope (3) are connected to the adjustment component, and the adjustment component includes a mounting plate (5) fixedly connected to the skeleton body (7) and an adjustment knob (6) arranged on the mounting plate (5) for adjusting the tension or reset of the pull rope (3), and the adjustment knob (6) is provided with a tightening structure for adjusting the tension of the pull rope (3) and a reset structure for resetting the pull rope (3).

2. The adjustable elastic support frame for a car seat according to claim 1, characterized in that: The tightening structure comprises a ratchet (601) arranged in an adjusting knob (6) and a rotating rod (602) fixedly connected to the ratchet (601); one end of the rotating rod (602) passes through a fixing plate (4) and is fixedly connected to a twist cover (603); the other end is rotatably connected to the adjusting knob (6); a ratchet pawl (604) matching the ratchet (601) is also arranged in the adjusting knob (6); and both ends of the pull rope (3) are fixedly connected to the ratchet (601).

3. The adjustable elastic support frame for a car seat according to claim 2, characterized in that: The reset structure comprises a fixed sleeve (605) arranged in the adjusting knob (6) and a sliding sleeve (606) slidably connected in the fixed sleeve (605); one end of the sliding sleeve (606) is connected to the bearing of the rotating rod (602); a mounting groove for mounting the bearing is arranged in the sliding sleeve (606); at least one block (607) for limiting the rotation of the sliding sleeve (606) in the fixed sleeve (605) is arranged on the outer periphery of the sliding sleeve (606); and a sliding groove (608) for the block (607) to slide up and down is arranged in the fixed sleeve (605).

4. The adjustable elastic support frame for a car seat according to claim 1, characterized in that: The suspension steel wire (1) is made of elastic steel wire bent into a wave shape, and a drawstring fixing sleeve (2) for fixing a drawstring (3) is provided on the wave crest on the side where two suspension steel wires (1) are close to each other.

5. The adjustable elastic support frame for a car seat according to claim 4, characterized in that: The pull rope fixing sleeve (2) comprises an "L"-shaped sleeve portion (201) arranged at the wave crest of the suspension steel wire (1) and an "L"-shaped mounting portion (202) connected to the sleeve portion (201); the mounting portion (202) and the sleeve portion (201) are arranged relative to each other to form a rhombus; one end of the mounting portion (202) is fixedly connected to the sleeve portion (201); a gap for the pull rope (3) to be squeezed in is left between the other end and the sleeve portion (201); the outer surface of the sleeve portion (201) is smooth; and the pull rope fixing sleeve (2) is injection molded.

6. The adjustable elastic support frame for a car seat according to claim 1, characterized in that: The pull rope (3) is made of high-strength elastic wear-resistant fiber.

7. The adjustable elastic support frame for a car seat according to claim 1, characterized in that: The skeleton body comprises sheet metal skeletons symmetrically arranged on both sides and a "U"-shaped steel pipe connector welded to the upper end of the sheet metal skeleton, a mounting rod (8) is transversely arranged on the connector, and the upper end of the suspension steel wire (1) is connected to the mounting rod (8).

8. The adjustable elastic support frame for a car seat according to claim 1, characterized in that: The upper end and the lower end of the suspension steel wire (1) are respectively welded to the mounting rod (8) and the skeleton body (7) through a fixing plate (4), and the fixing plate (4) is formed by bending a sheet metal.

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