A driver's seat that is easy to adjust in height

Abstract

The present invention discloses a driving chair which is convenient for lifting and adjusting, comprising a seat cushion and backrest assembly, a safety belt, a slide, a brake assembly, an upper slide slot assembly, a lifting assembly and a lower slide slot assembly, wherein safety belts are arranged on the left and right sides of the seat cushion and backrest assembly, the lower surface of the seat cushion and backrest assembly is connected with the upper slide slot assembly through the slide slot, the screw sleeve in the upper slide slot assembly is connected with the limiting screw in the brake assembly, a lower slide slot assembly is arranged below the upper slide slot assembly, and a lifting assembly is arranged between the upper slide slot assembly and the upper slide slot assembly. This lifting and lowering locking mechanism is not only flexible and reliable, but also can be converted through the limiting screw and latch, limiting screw and screw sleeve structure, the spacing of each gear is small, and the locking force conversion should be carried out in the vertical direction, which greatly reduces the force on the spline at the outer end of the limiting screw, and greatly improves the service life and structural stability of the locking mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of driving chairs, in particular to a driving chair which is convenient for lifting and lowering. Background Art

[0002] As an important means of transportation in modern times, the driver's job is very hard and labor-intensive, and he needs to concentrate on the work continuously. For most driving chairs, a fixed structure design is generally adopted, that is, the backrest and seat cannot be raised and lowered according to the needs of the user during use, the adjustability is poor and it is uncomfortable to use. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a driving chair that is convenient for lifting and adjusting. Through the braking component and the lifting component, the problems in the background technology can be effectively solved.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a driving chair that is easy to lift and adjust, comprising a seat cushion and backrest assembly, a safety belt, a slide, a brake assembly, an upper slide assembly, a lifting assembly and a lower slide assembly, wherein safety belts are provided on the left and right sides of the seat cushion and backrest assembly, the lower surface of the seat cushion and backrest assembly is connected to the upper slide assembly through a slide, the screw sleeve in the upper slide assembly is connected to the limiting screw in the brake assembly, a lower slide assembly is provided below the upper slide assembly, and a lifting assembly is provided between the upper slide assemblies.

[0005] Furthermore, the brake assembly includes a control handle, which is connected to the ear plate on the frame of the upper slide assembly, and the rear end of the control handle is connected to the latch reset device through a connecting plate. A latch sleeve is provided on the right side of the latch reset device, and a latch is provided on the right side of the latch sleeve. The latch is engaged with the outer end spline of the limit screw on the right side, thereby stopping the limit screw from rotating and keeping the seat at the current height. The control handle can toggle the latch, and the latch can slide freely in the latch sleeve. When the control handle is released, the latch reset device can reset the latch.

[0006] Furthermore, the upper slide groove assembly includes a frame, a fixed shaft is provided at the front end inside the frame, a sliding shaft is provided at the rear end inside the frame, sliding wheels are provided at both ends of the sliding shaft, and the middle part of the outer surface of the sliding shaft is connected to the threaded sleeve corresponding to the limiting screw by welding. When the seat is raised or lowered, the sliding shaft slides freely in the frame, thereby driving the threaded sleeve to move back and forth, thereby driving the limiting screw to rotate.

[0007] Furthermore, the lifting assembly includes a lifting cross rod, and there are two groups of lifting cross rods. The lifting cross rods are connected by pin rods. The outer surface of the pin rod at the lower end of the lifting cross rod is provided with a lifting torsion spring. The front and rear sides of the upper end of the lifting cross rod are respectively connected to the fixed shaft and the sliding shaft in the upper slide groove assembly. The lifting torsion spring is installed in coordination with the lifting cross rod. The lifting torsion spring outputs a lifting force, which can provide a lifting force to the lifting cross rod, thereby raising the seat.

[0008] Furthermore, the lower slide groove assembly and the upper slide groove assembly have the same structure, and the lower slide groove assembly includes a fixed shaft 2 and a sliding shaft 2. The fixed shaft 2 and the sliding shaft 2 of the lower slide groove assembly are connected to the front and rear sides of the upper end of the lifting cross rod in the lifting assembly. When the seat is raised or lowered, the sliding shaft slides freely in the upper slide groove assembly and the lower slide groove assembly.

[0009] Compared with the prior art, the beneficial effects of the present invention are: the driving chair that is convenient to lift and adjust has the following advantages:

[0010] 1. The present invention is provided with a brake assembly, and the latch is moved by a control handle so that the latch slides freely in the latch sleeve, and the latch is engaged with the spline at the outer end of the limit screw, so that the seat is retracted when it is raised or lowered.

[0011] 2. The present invention is provided with a lifting assembly, and the lifting torsion spring is installed and matched with the lifting cross rod, which can provide a lifting force to the lifting cross rod, thereby making the seat rise.

[0012] 3. The present invention is provided with an upper slide groove assembly and a lower slide groove assembly. When the seat is raised or lowered, the sliding shaft slides freely in the upper slide groove assembly and the lower slide groove assembly, thereby causing the seat to be raised or lowered. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention;

[0014] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0015] Figure 3 It is a schematic diagram of a partial top view of the structure of the present invention;

[0016] Figure 4 It is a schematic diagram of the local side structure of the present invention.

[0017] In the figure: 1 seat cushion backrest assembly, 2 safety belt, 3 slide, 4 brake assembly, 5 upper slide groove assembly, 6 lifting assembly, 7 lower slide groove assembly, 8 control handle, 9 latch reset device, 10 latch sleeve, 11 latch, 12 limit screw, 13 frame, 14 screw sleeve, 15 sliding shaft, 16 fixed shaft, 17 lifting cross rod, 18 lifting torsion spring. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-4The present invention provides a technical solution: a driving chair that is convenient for lifting and adjusting, comprising a seat cushion backrest assembly 1, a safety belt 2, a slide 3, a brake assembly 4, an upper slide assembly 5, a lifting assembly 6 and a lower slide assembly 7. The seat cushion backrest assembly 1 is provided with a safety belt 2 on both sides, the lower surface of the seat cushion backrest assembly 1 is connected to the upper slide assembly 5 through the slide 3, the screw sleeve 11 in the upper slide assembly 5 is connected to the limit screw 10 in the brake assembly 4, a lower slide assembly 7 is provided below the upper slide assembly 5, a lifting assembly 6 is provided between the upper slide assembly 5 and the upper slide assembly 7, the brake assembly 4 includes a control handle 8, and the control handle 8 is connected to the upper slide assembly 7. The upper slide assembly 5 is connected with the ear plate on the frame 13, and the rear end of the control handle 8 is connected to the latch reset device 9 through the connecting plate. A latch sleeve 10 is provided on the right side of the latch reset device 9, and a latch 11 is provided on the right side of the latch sleeve 10. The latch 11 is engaged with the spline at the outer end of the limit screw 12 on the right side, so that the limit screw 12 stops rotating and keeps the seat at the current height. The control handle 8 can move the latch 11, and the latch 11 can slide freely in the latch sleeve 10. When the control handle 8 is released, the latch reset device 9 can reset the latch 11. The upper slide assembly 5 includes a frame 13, and the frame A fixed shaft 18 is provided at the front end of the inner side of the frame 13, a sliding shaft 15 is provided at the rear end of the inner side of the frame 13, sliding wheels are provided at both ends of the sliding shaft 12, and the middle part of the outer surface of the sliding shaft 15 is connected with the screw sleeve 14 corresponding to the limit screw 12 by welding. When the seat is raised or lowered, the sliding shaft 12 slides freely in the frame 13, thereby driving the screw sleeve 14 to move back and forth, thereby driving the limit screw 12 to rotate. The lifting assembly 6 includes a lifting cross rod 17, and there are two groups of lifting cross rods 17. The lifting cross rods 17 are connected by pin rods. The outer surface of the pin rod at the lower end of the lifting cross rod 17 is provided with a lifting torsion spring 18. The front and rear sides of the upper end of the rod 17 are respectively connected to the fixed shaft 18 and the sliding shaft 15 in the upper slide groove assembly 5. The lifting torsion spring 18 is installed in coordination with the lifting cross rod 17. The lifting torsion spring 18 outputs a lifting force, which can provide a lifting force to the lifting cross rod 17, thereby lifting the seat. The lower slide groove assembly 7 and the upper slide groove assembly 5 have the same structure. The lower slide groove assembly 7 includes a fixed shaft 2 and a sliding shaft 2. The fixed shaft 2 and the sliding shaft 2 of the lower slide groove assembly 7 are connected to the front and rear sides of the upper end of the lifting cross rod 17 in the lifting assembly 6. When the seat is raised or lowered, the sliding shaft 12 slides freely in the upper slide groove assembly 5 and the lower slide groove assembly 7.

[0020] When using:

[0021] The control handle 8 is pulled upward, and the connecting plate at the end of the control handle 8 moves the latch 11, so that the latch 11 slides in the latch sleeve 10, thereby disengaging the latch 11 from the spline at the outer end of the limit screw 12. At this time, the limit screw 12 can rotate freely. When the seat surface is subjected to a downward force, the upward force output by the lifting torsion spring 18 can be overcome, so that the lifting cross rod 17 is lowered, and the seat cushion backrest assembly 1 is lowered accordingly. When the control handle 8 is released, the latch reset device 9 can reset the latch 11, and the spline at the outer end of the limit screw 12 is engaged with the latch 11, and the limit screw 12 stops rotating. The relative position of the screw sleeve 14 and the limit screw 12 is locked, thereby locking the lifting cross rod 17, so that the seat remains at the current height. Similarly, when there is no force on the seat surface, the upward force output by the lifting torsion spring 18 can raise the lifting cross rod 17, and the seat cushion backrest assembly 1 rises accordingly. When the control handle 8 is released, the latch reset device can reset the latch 11, and the spline at the outer end of the limit screw 12 engages with the latch 11, the limit screw 12 stops rotating, and the relative position of the screw sleeve 14 and the limit screw 12 is locked, thereby locking the lifting cross rod 17, so that the seat remains at the current height.

[0022] Although 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 appended claims and their equivalents.

Claims

1. A driving chair that is convenient for lifting and adjusting, comprising a seat cushion and backrest assembly (1), a safety belt (2), a slideway (3), a brake assembly (4), an upper slideway assembly (5), a lifting assembly (6) and a lower slideway assembly (7), characterized in that: The seat cushion backrest assembly (1) is provided with safety belts (2) on both sides thereof; the lower surface of the seat cushion backrest assembly (1) is connected to the upper slide groove assembly (5) via a slideway (3); the screw sleeve (11) in the upper slide groove assembly (5) is connected to the limit screw (10) in the brake assembly (4); a lower slide groove assembly (7) is provided below the upper slide groove assembly (5); a lifting assembly (6) is provided between the upper slide groove assembly (5) and the upper slide groove assembly (7); the brake assembly (4) includes a control handle (8), the control handle (8) is connected to the ear plate on the frame (13) of the upper slide groove assembly (5), the rear end of the control handle (8) is connected to the latch reset device (9) through a connecting plate, the right side of the latch reset device (9) is provided with a latch sleeve (10), the right side of the latch sleeve (10) is provided with a latch (11), the latch (11) is meshed with the outer end spline of the limit screw (12) on the right side; the upper slide groove assembly (5) includes a frame (13), the frame (13) a fixed shaft (18) is provided at the inner front end, a sliding shaft (15) is provided at the inner rear end of the frame (13), sliding wheels are provided at both ends of the sliding shaft (15), and the middle part of the outer surface of the sliding shaft (15) is connected to the screw sleeve (14) corresponding to the limit screw (12) by welding; the lifting component (6) includes a lifting cross rod (17), and the lifting cross rod (17) has two groups, and the lifting cross rods (17) are connected by pin rods. The outer surface of the pin rod at the lower end of the lifting cross rod (17) is provided with a lifting torsion spring (18), and the front and rear sides of the upper end of the lifting cross rod (17) are respectively connected to the fixed shaft (18) and the sliding shaft (15) in the upper slide groove component (5); the lower slide groove component (7) and the upper slide groove component (5) have the same structure, and the lower slide groove component (7) includes a fixed shaft 2 and a sliding shaft 2, and the fixed shaft 2 and the sliding shaft 2 of the lower slide groove component (7) are connected to the front and rear sides of the lower end of the lifting cross rod (17) in the lifting component (6);During use, the control handle (8) is pulled upward, and the connecting plate at the end of the control handle (8) moves the latch (11), causing the latch (11) to slide in the latch sleeve (10), thereby causing the latch (11) to disengage from the spline at the outer end of the limit screw (12). At this time, the limit screw (12) can rotate freely. When the seat surface is subjected to a downward force, the upward force output by the lifting torsion spring (18) is overcome, thereby causing the lifting cross rod (17) to descend, and the seat cushion backrest assembly (1) is lowered accordingly. When the control handle (8) is released, the latch reset device (9) resets the latch (11), and the spline at the outer end of the limit screw (12) engages with the latch (11), and the limit screw (12) is engaged with the latch (11). 2) Stop rotating, the relative position of the screw sleeve (14) and the limit screw (12) is locked, thereby locking the lifting cross rod (17), so that the seat is kept at the current height. Similarly, when there is no force on the seat surface, the lifting torsion spring (18) outputs the lifting cross rod (17) to raise the lifting cross rod, and the seat cushion backrest assembly (1) is raised accordingly. When the control handle (8) is released, the latch reset device can reset the latch (11), the outer end spline of the limit screw (12) is engaged with the latch (11), the limit screw (12) stops rotating, the relative position of the screw sleeve (14) and the limit screw (12) is locked, thereby locking the lifting cross rod (17), so that the seat is kept at the current height. ;

Images