Waist supporting structure for automobile seat backrest

Abstract

The utility model relates to the technical field of automobile seats, and discloses a waist support structure for an automobile seat backrest, which comprises a soft cushion, the outer side of the front end of the soft cushion is fixedly connected with a backrest cushion, the front end of the soft cushion is fixedly connected with two bottom plates, the front ends of the bottom plates are movably connected with a plurality of balls, and the balls are fixedly connected with the backrest cushion. The front end of the middle ball is fixedly connected with a telescopic column, the telescopic column is sleeved with a first spring, the front end of the telescopic column is fixedly connected with a bottom piece, the front end of the bottom piece is rotatably connected with a plurality of connecting rods, and the other ends of the connecting rods are slidably connected with a top plate. The front ends of the balls at the upper end and the lower end are fixedly connected with telescopic rods, the telescopic rods are sleeved with second springs, and the rear end of the soft cushion is fixedly connected with a leaning seat assembly. According to the waist supporting structure of the automobile seat backrest, the waist supporting structure of the automobile seat backrest is firmer and more stable, and the purpose of improving the stability of the waist supporting structure is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to a waist supporting structure for a backrest of an automobile seat. Background Art

[0002] A car seat massage headrest is an innovative automotive accessory designed to provide a comfortable experience for the driver or passenger. It usually has a built-in massage function, which can relieve back and neck fatigue through a vibration or rolling mechanism. Some models also include a heating function for additional comfort. The adjustable design adapts to different body shapes, and the intelligent control system allows the user to select the massage mode and intensity. This headrest is designed to improve driving or riding comfort while promoting blood circulation in the body, providing a more pleasant experience for long journeys.

[0003] After searching, Chinese patent announcement number: CN206344729U discloses a lumbar support for a car seat, including a base plate and a scissor-fork linkage mechanism and a lumbar support plate for supporting the waist, the lumbar support plate is arranged on the base plate through the scissor-fork linkage mechanism, and the base plate is provided with a driving motor for driving the two ends of the bottom of the scissor-fork linkage mechanism to move relative to each other. The lumbar support structure of the car seat is reasonably designed, and the lumbar support plate is driven to move by the scissor-fork linkage mechanism, which is stable and reliable for long-term use and not easy to be damaged; it has a good buffering function driven by a compression spring, buffers the impact of the back of the human body, and improves the comfort of the seat back.

[0004] The beneficial effects in the above patent specification mention that "the lumbar support structure of the automobile seat is reasonably designed, and the lumbar support plate is driven to move through a scissor-type linkage mechanism. It is stable, reliable and not easy to be damaged in long-term use." Although the above patent can drive the lumbar support plate to move through a scissor-type linkage mechanism, when pressure is applied to it from the front side during specific use, the scissor-type mechanism will be damaged, and further damage will be caused to the entire lumbar support device. For this reason, a lumbar support structure for a car seat backrest is proposed to solve the above problem. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a lumbar support structure for a car seat backrest, aiming to improve the problem in the prior art that when pressure is applied from the front side, the scissor mechanism will be damaged, further causing damage to the entire lumbar support device.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A lumbar support structure for a car seat backrest, comprising a cushion, a back cushion fixedly connected to the outer side of the front end of the cushion, the front end of the cushion fixedly connected to two bottom plates, the front end of the bottom plates movably connected to a plurality of balls, the front end of the middle balls fixedly connected to a telescopic column, the outer sleeve of the telescopic column is provided with a spring 1, the front end of the telescopic column fixedly connected to a bottom plate, the front end of the bottom plate is rotatably connected to a plurality of connecting rods, the other ends of the plurality of connecting rods are slidably connected to a top plate, the front ends of the balls at the upper and lower ends are fixedly connected to the telescopic rods, the outer sleeve of the telescopic rods is provided with a spring 2, the rear end of the cushion fixedly connected to a seat assembly, and the rear end bottom of the seat assembly is fixedly connected to a limiting assembly.

[0008] Furthermore, the seat assembly includes two long columns, the front ends of the two long columns are respectively fixedly connected to the left and right sides of the rear end of the cushion, the outside of the two long columns are slidably connected to the seat cushion, and the rear end bottom of the cushion is fixedly connected to a bottom block.

[0009] Furthermore, the limit assembly includes two special-shaped blocks 1, the front ends of the two special-shaped blocks 1 are fixedly connected to the rear end of the bottom block, the rear end of the special-shaped block 1 is fixedly connected to the limit block, the outside of the special-shaped block 1 is slidably connected to a cylinder, the top end of the cylinder is fixedly connected to the special-shaped block 2, and the inner wall of the special-shaped block 2 is slidably connected to a pull button.

[0010] Furthermore, one end of the spring one is fixedly connected to one side of the telescopic column, the other end of the spring one is fixedly connected to one side of the bottom plate, one end of the spring two is fixedly connected to one side of the telescopic rod, and the other end of the spring two is fixedly connected to one side of the top plate.

[0011] Furthermore, the front end of the telescopic rod is fixedly connected to the rear end of the top plate, and the front ends of the two top plates are fixedly connected to the rear end of the backrest cushion.

[0012] Furthermore, the outside of the bottom block is slidably connected to the inner wall of the seat cushion, and the outside of the pull button is slidably connected to the inner wall of the top end of the cylinder.

[0013] Furthermore, the outside of the pull button is slidably connected to the top end of the special-shaped block 1, and the rear end of the cylinder is fixedly connected to the rear end of the inner wall of the seat cushion.

[0014] Furthermore, the exterior of the second special-shaped block contacts the inner wall of the seat cushion, and the exterior of the limit block is slidably connected to the inner wall of the cylinder.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, a more solid and stable lumbar support structure of the car seat back is realized through the mutual cooperation of the bottom plate, balls, telescopic columns, springs, bottom plates and other structures. No matter what posture the passenger leans on the support structure, it will not be damaged, thereby affecting the entire seat back, thereby achieving the purpose of improving the stability of the lumbar support structure.

[0017] 2. In the utility model, the bottom of the lumbar support structure is dynamically adjusted through the cooperation of the special-shaped block 1, the limit block, the cylinder, the special-shaped block 2, the button and other structures, so that when the passenger leans on the lumbar support structure, it can slide back and forth according to the passenger's body shape, so that it can find the position that best matches the current customer's waist, thereby achieving the purpose of improving the passenger's comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of a lumbar support structure for a car seat backrest proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of a cushion structure for a lumbar support structure of a car seat backrest proposed by the utility model;

[0020] Figure 3 This is a schematic diagram of a telescopic column structure for a lumbar support structure for a car seat backrest proposed by the utility model;

[0021] Figure 4 for Figure 2 Enlarged view of point A in .

[0022] Legend:

[0023] 1. Cushion; 2. Backrest cushion; 3. Bottom plate; 4. Ball bearing; 5. Telescopic column; 6. Spring 1; 7. Bottom plate; 8. Connecting rod; 9. Top plate; 10. Telescopic rod; 11. Spring 2; 12. Long column; 13. Chair cushion; 14. Bottom block; 15. Special-shaped block 1; 16. Limit block; 17. Cylinder; 18. Special-shaped block 2; 19. Knob. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Reference Figure 1-Figure 3The utility model provides an embodiment: a lumbar support structure for a car seat backrest, comprising a cushion 1, a back cushion 2 is fixedly connected to the outer side of the front end of the cushion 1, the cushion 1 here provides support for the back cushion 2, the front end of the cushion 1 is fixedly connected to two bottom plates 3, the front end of the bottom plates 3 is movably connected to a plurality of balls 4, the front end of the middle ball 4 is fixedly connected to a telescopic column 5, and the ball 4 here will drive the telescopic column 5 to move when it is active.

[0026] Reference Figure 3 The outer sleeve of the telescopic column 5 is provided with a spring 6, and the front end of the telescopic column 5 is fixedly connected to the bottom film 7. The telescopic column 5 here provides a stable support for the bottom film 7. One end of the spring 6 is fixedly connected to one side of the telescopic column 5, and the other end of the spring 6 is fixedly connected to one side of the bottom film 7. The telescopic column 5 and the bottom film 7 here provide a stable movement space for the spring 6. The front end of the bottom film 7 is rotatably connected to a plurality of connecting rods 8, and the other ends of the plurality of connecting rods 8 are slidably connected to a top plate 9.

[0027] Reference Figure 3 The top plate 9 here limits the sliding range of the connecting rod 8, so that it can achieve the effect of expanding and unloading the force to both sides. The front ends of the two top plates 9 are fixedly connected to the rear end of the backrest cushion 2, and the front ends of the upper and lower ends of the balls 4 are fixedly connected with the telescopic rod 10. The front end of the telescopic rod 10 is fixedly connected to the rear end of the top plate 9. The top plate 9 here provides a stable telescopic space for the telescopic rod 10, and the outer sleeve of the telescopic rod 10 is provided with a spring 2 11.

[0028] Reference Figure 2-Figure 3 One end of the spring 11 is fixedly connected to one side of the telescopic rod 10, and the other end of the spring 11 is fixedly connected to one side of the top plate 9. The telescopic rod 10 and the top plate 9 here provide stable support for the spring 11, so that it can operate stably. The rear end of the cushion 1 is fixedly connected with a seat assembly, and the seat assembly includes two long columns 12. The front ends of the two long columns 12 are respectively fixedly connected to the left and right sides of the rear end of the cushion 1. The cushion 1 here provides stable support for the long columns 12.

[0029] Reference Figure 2-Figure 4 The two long columns 12 are slidably connected to the outside of the seat cushion 13, and the bottom of the rear end of the cushion 1 is fixedly connected to the bottom block 14. The outside of the bottom block 14 is slidably connected to the inner wall of the seat cushion 13. The seat cushion 13 here provides a sliding space for the bottom block 14 and plays a limiting role. The bottom of the rear end of the seat assembly is fixedly connected to the limiting assembly. The limiting assembly includes two special-shaped blocks 15. The front ends of the two special-shaped blocks 15 are fixedly connected to the rear end of the bottom block 14. When the bottom block 14 moves, it will drive the special-shaped block 15 on it to move together.

[0030] Reference Figure 4The rear end of the special-shaped block 15 is fixedly connected to the limiting block 16, and the outside of the special-shaped block 15 is slidably connected to the cylinder 17. The cylinder 17 here further ensures the stability of the limiting block 16. The outside of the limiting block 16 is slidably connected to the inner wall of the cylinder 17, and the rear end of the cylinder 17 is fixedly connected to the rear end of the inner wall of the seat cushion 13. The seat cushion 13 here provides stable support for the cylinder 17, making it more stable.

[0031] Reference Figure 4 The top of the cylinder 17 is fixedly connected with a special-shaped block 18, the outside of the special-shaped block 18 is in contact with the inner wall of the seat cushion 13, and the inner wall of the special-shaped block 18 is slidably connected with a button 19, the outside of the button 19 is slidably connected to the inner wall of the top of the cylinder 17, and the outside of the button 19 is slidably connected to the top of the special-shaped block 15. Pulling the button 19 here can dismantle the engagement relationship between it and the special-shaped block 15, so that it can be reset.

[0032] Working principle: When a passenger leans on this seat, the back cushion 2 will first be subjected to a squeezing force, and then the back cushion 2 will transfer the force to the top plate 9. After being subjected to the force, the top plate 9 will cause the two connecting rods 8 to expand and slide outward, and at the same time, the spring 1 6 will start to operate. The spring 2 11 here will give it a reaction force to achieve a buffering effect. At this time, the connecting rod 8 will further squeeze the bottom film 7 when it expands, and the bottom film 7 will further transfer the force to the telescopic column 5, and the telescopic column 5 will contract when subjected to the force.

[0033] The spring 6 thereon will also shrink accordingly, and at the same time give a reaction force to the outside world, thereby minimizing the force transmission. When the passenger's waist twists accordingly, the ball 4 here will drive the telescopic column 5 and the telescopic rod 10 to move, thereby achieving a multi-directional force reduction effect. The long column 12 here mainly functions to limit the sliding range of the cushion 1 while maintaining its stability. At the same time, the backrest cushion 2 will drive the bottom block 14 to move backward.

[0034] When the bottom block 14 moves, it will drive the special-shaped block 15 inside it to move backward. Here, the state of the special-shaped block 15 is the state of moving to the maximum distance. When the special-shaped block 15 moves backward, the button 19 in the special-shaped block 2 18 will roll up and down in the groove at the top of the special-shaped block 15. When it stops moving, the button 19 will complete the engagement with the special-shaped block 15 to fix this state, so as to achieve the effect of matching this seat with the passenger's waist and improve the comfort of the passenger.

[0035] When it needs to be reset, just pull the button 19 to make it move upward inside the special-shaped block 18, and then pull the cushion 1 outward. The limit block 16 here has a limiting function, mainly preventing the special-shaped block 15 from escaping the control range of the cylinder 17.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lumbar support structure for a car seat back, comprising a cushion (1), characterized in that: The front end of the soft cushion (1) is fixedly connected to a backrest cushion (2) on the outside, the front end of the soft cushion (1) is fixedly connected to two bottom plates (3), the front end of the bottom plate (3) is movably connected to a plurality of balls (4), the front end of the middle ball (4) is fixedly connected to a telescopic column (5), the outer sleeve of the telescopic column (5) is provided with a spring 1 (6), the front end of the telescopic column (5) is fixedly connected to a bottom plate (7), the front end of the bottom plate (7) is rotatably connected to a plurality of connecting rods (8), the other ends of the plurality of connecting rods (8) are slidably connected to a top plate (9), the front ends of the balls (4) at the upper and lower ends are fixedly connected to telescopic rods (10), the outer sleeve of the telescopic rod (10) is provided with a spring 2 (11), the rear end of the soft cushion (1) is fixedly connected to a seat assembly, and the rear end bottom of the seat assembly is fixedly connected to a limiting assembly.

2. A lumbar support structure for a car seat back according to claim 1, characterized in that: The seat assembly comprises two long columns (12), the front ends of the two long columns (12) are respectively fixedly connected to the left and right sides of the rear end of the cushion (1), the outsides of the two long columns (12) are slidably connected to a seat cushion (13), and the rear end bottom of the cushion (1) is fixedly connected to a bottom block (14).

3. A lumbar support structure for a car seat back according to claim 2, characterized in that: The limit assembly comprises two special-shaped blocks (15), the front ends of the two special-shaped blocks (15) are fixedly connected to the rear end of the bottom block (14), the rear end of the special-shaped block (15) is fixedly connected to the limit block (16), the outside of the special-shaped block (15) is slidably connected to a cylinder (17), the top end of the cylinder (17) is fixedly connected to the special-shaped block (18), and the inner wall of the special-shaped block (18) is slidably connected to a pull button (19).

4. The lumbar support structure for a car seat back according to claim 1, characterized in that: One end of the spring one (6) is fixedly connected to one side of the telescopic column (5), and the other end of the spring one (6) is fixedly connected to one side of the bottom plate (7). One end of the spring two (11) is fixedly connected to one side of the telescopic rod (10), and the other end of the spring two (11) is fixedly connected to one side of the top plate (9).

5. The lumbar support structure for a car seat back according to claim 1, characterized in that: The front end of the telescopic rod (10) is fixedly connected to the rear end of the top plate (9), and the front ends of the two top plates (9) are fixedly connected to the rear end of the backrest cushion (2).

6. The lumbar support structure for a car seat back according to claim 3, characterized in that: The outside of the bottom block (14) is slidably connected to the inner wall of the seat cushion (13), and the outside of the pull button (19) is slidably connected to the inner wall of the top end of the cylinder (17).

7. The lumbar support structure for a car seat back according to claim 3, characterized in that: The outside of the pull button (19) is slidably connected to the top end of the special-shaped block (15), and the rear end of the cylinder (17) is fixedly connected to the rear end of the inner wall of the seat cushion (13).

8. The lumbar support structure for a car seat back according to claim 3, characterized in that: The outside of the second special-shaped block (18) contacts the inner wall of the seat cushion (13), and the outside of the limit block (16) is slidably connected to the inner wall of the cylinder (17).

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