Logistics vehicle seat with adjustable waist support

Abstract

The utility model belongs to the technical field of seats, and particularly relates to a waist support adjustable logistics vehicle seat which comprises a backrest assembly, the backrest assembly comprises a rotating mechanism, a supporting plate is installed at the movable end of the rotating mechanism, a motor is fixedly connected to the outer side wall of the supporting plate, a mounting shaft is fixedly connected to the top of the output end of the motor, and a waist support is fixedly connected to the mounting shaft. A threaded sleeve is fixedly connected to the outer side wall of the supporting plate, the top of the mounting shaft penetrates through the threaded sleeve and is in threaded connection with the threaded sleeve, a waist support is arranged above the supporting plate, a fixing plate is fixedly connected to the outer wall of the waist support, and the bottom of the fixing plate is rotationally connected with the mounting shaft. The height position of the waist support can be adjusted, personalized waist support requirements of drivers with different heights can be flexibly met, and the riding comfort of the drivers is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a lumbar support adjustable logistics vehicle seat. Background Art

[0002] In order to enable the drivers of logistics vehicles to avoid discomfort in the waist during long - term driving, a lumbar support is installed inside the seat backrest, so as to support the driver's waist, correct the driver's sitting posture, and reduce waist injuries at the same time.

[0003] After retrieval, it is found that in the patent with the publication number of CN206354753U, a lumbar support device for seats is disclosed. In this document, a lumbar support is provided on the seat to support the user's waist. The installation position of the lumbar support is fixed. During long - distance driving, the drivers of logistics vehicles need to hold the steering wheel tightly for several hours or even longer, keep their eyes fixed on the front, and their bodies maintain the same sitting posture for a long time. In such a high - intensity driving state, the driver's body, especially the waist, is prone to fatigue. If the installation position of the lumbar support is fixed, it cannot be flexibly adjusted according to the driver's height, body type or sitting posture changes during driving, and continuous and effective lumbar support cannot be provided, which will cause the driver's waist muscles to be tense and sore, seriously affecting driving safety and riding comfort. Summary of the Utility Model

[0004] The utility model provides a lumbar support adjustable logistics vehicle seat, which can adjust the height position of the lumbar support. This design can flexibly adapt to the personalized lumbar support needs of drivers of different heights and improve the riding comfort of drivers.

[0005] To solve the above - mentioned technical problems, a lumbar support adjustable logistics vehicle seat provided by the utility model includes a backrest assembly. The backrest assembly includes a rotating mechanism. A support plate is installed at the movable end of the rotating mechanism. A motor is fixedly connected to the outer side wall of the support plate. The top of the output end of the motor is fixedly connected with a mounting shaft. A threaded sleeve is fixedly connected to the outer side wall of the support plate. The top of the mounting shaft penetrates through the threaded sleeve and is threadedly connected with it. A lumbar support is arranged above the support plate. A fixing plate is fixedly connected to the outer wall of the lumbar support. The bottom of the fixing plate is rotatably connected with the mounting shaft. A plurality of mounting plates are symmetrically fixedly connected to the outer wall of the lumbar support. A guide rod is fixedly connected between two mounting plates on the same side. Both guide rods penetrate through the support plate and are slidably connected with it;

[0006] The mounting shaft includes a first connecting shaft and a second connecting shaft. A sliding hole is formed in the outer wall of the first connecting shaft. A connecting frame is slidably connected to the inner wall of the sliding hole. The end of the connecting frame is fixedly connected with the second connecting shaft.

[0007] Preferably, the backrest assembly is connected to the seat cushion, and a headrest is installed at the top of the backrest assembly.

[0008] Preferably, the backrest assembly further includes two skeletons. A seat cover is sleeved on the outer walls of the two skeletons. Two connecting plates are symmetrically and fixedly connected to the relatively close sides of the two skeletons. The connecting plate located above is fixedly connected to the headrest, and the connecting plate located below is hinged to the seat cushion through an angle adjuster.

[0009] Preferably, a plurality of reinforcing ribs are equidistantly and fixedly connected to the relatively close sides of the two skeletons, and the plurality of reinforcing ribs are respectively located above the lumbar support.

[0010] Preferably, two mounting grooves are symmetrically formed on the outer wall of the lumbar support. A connecting shaft is fixedly connected to the inner wall of the support plate. Two rollers are rotatably connected to the circumferential outer wall of the connecting shaft, and the two rollers are respectively in rolling contact with the inner walls of the mounting grooves.

[0011] Preferably, the rotating mechanism includes a rotating shaft. The two ends of the rotating shaft are respectively fixedly connected to the two skeletons. A connecting sleeve is rotatably connected to the circumferential outer wall of the rotating shaft. Limiting sleeves are respectively fixedly connected to the two ends of the rotating shaft. Torsion springs are respectively sleeved on the two ends of the rotating shaft. The outer wall of the connecting sleeve is fixedly connected to the support plate.

[0012] Preferably, one end of the torsion spring is fixedly connected to the limiting sleeve, and the other end of the torsion spring is fixedly connected to the connecting sleeve.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. In the present utility model, the forward and reverse rotation of the motor drives the first connecting shaft to rotate. The first connecting shaft drives the second connecting shaft to rotate through the connecting frame, so that the second connecting shaft moves up and down along the threaded sleeve. While the second connecting shaft moves, it can drive the lumbar support to move up and down through the fixing plate, so as to adjust the height position of the lumbar support. This design can flexibly adapt to the personalized lumbar support needs of drivers of different heights and improve the riding comfort of the drivers.

[0015] 2. In the present utility model, when the lumbar support moves, it drives the guide rod to move, so that the guide rod slides along the inner wall of the support plate. The stability of the movement of the lumbar support can be improved through the guide rod. When the driver's waist leans on the lumbar support, the support plate drives the connecting sleeve to rotate. Under the action of the torsion force of the torsion spring, the lumbar support can elastically support the driver's waist. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0017] Figure 1 Schematic diagram of the overall structure of the present invention;

[0018] Figure 2 Schematic diagram of the partial structure of the present invention;

[0019] Figure 3 Schematic diagram of the installation structure of the lumbar support of the present invention;

[0020] Figure 4 Schematic diagram of the installation structure of the roller of the present invention;

[0021] Figure 5 Schematic diagram of the structure of the installation shaft of the present invention.

[0022] In the figure: 1, seat cover; 2, cushion; 3, headrest; 4, skeleton; 5, connecting plate; 6, reinforcing rib; 7, rotating shaft; 8, connecting sleeve; 9, torsion spring; 10, limiting sleeve; 11, support plate; 12, motor; 13, installation shaft; 131, first coupling shaft; 132, sliding hole; 133, second coupling shaft; 134, connecting frame; 14, threaded sleeve; 15, fixing plate; 16, lumbar support; 17, mounting plate; 18, guide rod; 19, installation groove; 20, connecting shaft; 21, roller. Detailed implementation manners

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0024] As Figures 1 to 5 shown, a lumbar support adjustable logistics vehicle seat includes a backrest assembly, and the backrest assembly includes a rotating mechanism;

[0025] A support plate 11 is installed at the movable end of the rotating mechanism. A motor 12 is fixedly connected to the outer side wall of the support plate 11. The top of the output end of the motor 12 is fixedly connected to a mounting shaft 13. A threaded sleeve 14 is fixedly connected to the outer side wall of the support plate 11. The top of the mounting shaft 13 penetrates through the threaded sleeve 14 and is threadedly connected thereto. Above the support plate 11, there is a lumbar support 16. A fixing plate 15 is fixedly connected to the outer wall of the lumbar support 16. The bottom of the fixing plate 15 is rotatably connected to the mounting shaft 13, which can achieve precise height adjustment of the lumbar support 16, meet the personalized needs of drivers of different heights, ensure that the lumbar support 16 is always at the best support position for the waist, and effectively relieve the waist fatigue and discomfort caused by long-term driving.

[0026] A plurality of mounting plates 17 are symmetrically fixedly connected to the outer wall of the lumbar support 16. A guide rod 18 is fixedly connected between two mounting plates 17 on the same side. Both guide rods 18 penetrate through the support plate 11 and are slidably connected thereto. When the lumbar support 16 moves, the guide rod 18 slides along the inner wall of the support plate 11, providing a stable guiding effect for the lifting of the lumbar support 16, reducing shaking and deviation, and ensuring the smoothness and accuracy of the adjustment process.

[0027] The mounting shaft 13 includes a first connecting shaft 131 and a second connecting shaft 133. An external thread portion is provided on the outer surface of the second connecting shaft 133, and the external thread portion is threadedly connected to the threaded sleeve 14. A sliding hole 132 is formed in the outer wall of the first connecting shaft 131. A connecting frame 134 is slidably connected to the inner wall of the sliding hole 132, and the end of the connecting frame 134 is fixedly connected to the second connecting shaft 133.

[0028] The backrest assembly is connected to the seat cushion 2. The backrest assembly and the seat cushion 2 are hinged through an angle adjuster. A headrest 3 is installed at the top of the backrest assembly. The backrest assembly further includes two skeletons 4. A seat cover 1 is sleeved on the outer walls of the two skeletons 4. Two connecting plates 5 are symmetrically fixedly connected to the relatively close sides of the two skeletons 4. The connecting plate 5 located above is fixedly connected to the headrest 3. The connecting plate 5 located below is hinged to the seat cushion 2 through an angle adjuster. A plurality of reinforcing ribs 6 are equidistantly fixedly connected to the relatively close sides of the two skeletons 4. The plurality of reinforcing ribs 6 are respectively located above the lumbar support 16. The backrest assembly uses two skeletons 4 as supports and is reinforced by the reinforcing ribs 6, ensuring the overall stability and durability of the seat. Moreover, the skeleton 4 and the seat cushion 2 are hinged through an angle adjuster, allowing the driver to adjust the backrest angle according to personal preferences, further improving the riding experience.

[0029] As Figure 3 and Figure 4As shown, two mounting grooves 19 are symmetrically formed on the outer wall of the lumbar support 16. A connecting shaft 20 is fixedly connected to the inner wall of the support plate 11. Two rollers 21 are rotatably connected to the circumferential outer wall of the connecting shaft 20. The two rollers 21 are respectively in rolling contact with the inner wall of the mounting groove 19. The rotating mechanism includes a rotating shaft 7. The two ends of the rotating shaft 7 are respectively connected and fixed to the two frames 4. A connecting sleeve 8 is rotatably connected to the circumferential outer wall of the rotating shaft 7. Limiting sleeves 10 are respectively fixedly connected to the two ends of the rotating shaft 7. Torsion springs 9 are respectively sleeved on the two ends of the rotating shaft 7. The outer wall of the connecting sleeve 8 is connected and fixed to the support plate 11. One end of the torsion spring 9 is connected and fixed to the limiting sleeve 10, and the other end of the torsion spring 9 is connected and fixed to the connecting sleeve 8. When the driver's waist leans on the lumbar support 16, the support plate 11 drives the connecting sleeve 8 to rotate. Under the action of the torsion force of the torsion spring 9, the lumbar support 16 can elastically support the driver's waist.

[0030] Working principle: The forward and reverse rotation of the motor 12 drives the first coupling shaft 131 to rotate. When the first coupling shaft 131 rotates, the second coupling shaft 133 is driven to rotate through the connecting frame 134. When the second coupling shaft 133 rotates, it moves up and down along the threaded sleeve 14, and at the same time drives the connecting frame 134 to slide along the inner wall of the sliding hole 132.

[0031] While the second coupling shaft 133 is moving, it can drive the lumbar support 16 to move up and down through the fixing plate 15, so as to adjust the height position of the lumbar support 16. When the lumbar support 16 moves, it drives the guide rod 18 to move, so that the guide rod 18 slides along the inner wall of the support plate 11. The stability of the movement of the lumbar support 16 can be improved through the guide rod 18.

[0032] When the driver's waist leans on the lumbar support 16, the support plate 11 drives the connecting sleeve 8 to rotate. Under the action of the torsion force of the torsion spring 9, the lumbar support 16 can elastically support the driver's waist.

[0033] It should be noted that the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or apparatus that comprises a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or apparatus.

[0034] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable lumbar support logistics vehicle seat, including a backrest assembly, characterized in that: The backrest assembly includes a rotating mechanism. A support plate (11) is installed at the movable end of the rotating mechanism. A motor (12) is fixedly connected to the outer side wall of the support plate (11). The top of the output end of the motor (12) is fixedly connected to a mounting shaft (13). A threaded sleeve (14) is fixedly connected to the outer side wall of the support plate (11). The top of the mounting shaft (13) penetrates through the threaded sleeve (14) and is threadedly connected thereto. A lumbar support (16) is provided above the support plate (11). A fixing plate (15) is fixedly connected to the outer wall of the lumbar support (16). The bottom of the fixing plate (15) is rotatably connected to the mounting shaft (13). A plurality of mounting plates (17) are fixedly connected to the outer wall of the lumbar support (16) in a symmetric structure. A guide rod (18) is fixedly connected between two mounting plates (17) on the same side. Both of the two guide rods (18) penetrate through the support plate (11) and are slidably connected thereto; The mounting shaft (13) includes a first connecting shaft (131) and a second connecting shaft (133). A sliding hole (132) is formed in the outer wall of the first connecting shaft (131). A connecting frame (134) is slidably connected to the inner wall of the sliding hole (132). The end of the connecting frame (134) is fixedly connected to the second connecting shaft (133).

2. The lumbar support adjustable logistics vehicle seat according to claim 1, wherein: The backrest assembly is connected to the seat cushion (2). A headrest (3) is installed at the top of the backrest assembly.

3. The lumbar support adjustable logistics vehicle seat according to claim 2, wherein: The backrest assembly further includes two skeletons (4). A seat cover (1) is sleeved on the outer walls of the two skeletons (4). Two connecting plates (5) are fixedly connected to the relatively close sides of the two skeletons (4) in a symmetric structure. The upper connecting plate (5) is fixedly connected to the headrest (3). The lower connecting plate (5) is hinged to the seat cushion (2) through an angle adjuster.

4. The lumbar support adjustable logistics vehicle seat according to claim 3, characterized in that: A plurality of reinforcing ribs (6) are fixedly connected to the relatively close sides of the two skeletons (4) at equal intervals. The plurality of reinforcing ribs (6) are respectively located above the lumbar support (16).

5. The lumbar support adjustable logistics vehicle seat according to claim 4, characterized in that: Two mounting grooves (19) are formed in the outer wall of the lumbar support (16) in a symmetric structure. A connecting shaft (20) is fixedly connected to the inner wall of the support plate (11). Two rollers (21) are rotatably connected to the outer circumferential wall of the connecting shaft (20). The two rollers (21) are respectively in rolling contact with the inner walls of the mounting grooves (19).

6. The lumbar support adjustable logistics vehicle seat according to claim 5, characterized in that: The rotating mechanism includes a rotating shaft (7). The two ends of the rotating shaft (7) are respectively fixedly connected to the two skeletons (4). A connecting sleeve (8) is rotatably connected to the outer circumferential wall of the rotating shaft (7). Limiting sleeves (10) are respectively fixedly connected to the two ends of the rotating shaft (7). Torsion springs (9) are respectively sleeved on the two ends of the rotating shaft (7). The outer wall of the connecting sleeve (8) is fixedly connected to the support plate (11).

7. The lumbar support adjustable logistics vehicle seat according to claim 6, characterized in that: One end of the torsion spring (9) is fixedly connected to the limiting sleeve (10). The other end of the torsion spring (9) is fixedly connected to the connecting sleeve (8).

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