CN212556248U

CN212556248U - Novel adjusting structure of business chair

Info

Publication number: CN212556248U
Application number: CN202021104656.5U
Authority: CN
Inventors: 何肖潇; 吴旭龙; 周林鸣; 王辉家; 王佳曦; 蔡吉; 徐伟东
Original assignee: Faurecia Wuxi Seating Components Co Ltd
Current assignee: Faurecia Wuxi Seating Components Co Ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-02-19
Anticipated expiration: 2030-06-15

Abstract

The utility model relates to a novel adjusting structure of a business chair, wherein a backrest is connected with a sitting basin through a filling block, the sitting basin is rotationally connected with a leg support, and the bottom of the sitting basin is connected with a sliding mechanism through a bracket; the upper part of the backrest is hinged with one end of an upper connecting rod, and the other end of the upper connecting rod is hinged with the armrest box and connected with a hinge point A; the lower part of the backrest is connected with a first middle connecting rod, the rear part of the sitting basin is connected with a second middle connecting rod, and the first middle connecting rod and the second middle connecting rod are hinged; the back bottom rear side integral type is connected with first lower connecting rod, and the leg holds in the palm the bottom and is connected with the one end of second lower connecting rod, and the second lower connecting rod other end is connected with first lower connecting rod. The free adjustment change from sitting posture to half lying to flat lying can be realized; set up the packing piece and fill the clearance between the two between back and sit the basin, connecting rod in first and the second guarantees that back and the relative rotation point of sitting the basin coincide with human back flex point, avoids human back to appear dragging the sense in the accommodation process.

Description

Novel adjusting structure of business chair

Technical Field

The utility model belongs to the technical field of the seat technical field with adjustable commercial affairs and specifically relates to a novel regulation structure of commercial affairs seat.

Background

With the rapid development of rail transit technology, high-speed rail traveling has become an essential mode for people to travel. The traditional commercial seat realizes the switching of the sitting posture and the lying posture of the seat through a motor-driven (gear rack) seat framework. The parallel forward movement of cushion draws back and cushion to same horizontal position and provides better rest state for the passenger. However, in the process of the existing seat from a sitting posture to a lying posture (the lying posture is switched to the sitting posture), the cushion moves forwards (backwards) in parallel, so that the waist and the back of a passenger have strong pulling feeling when the passenger enters the lying posture (the waist and the back of the passenger have strong squeezing feeling when the passenger enters the sitting posture).

The reason why such a pulling and pinching feeling is caused is that the relative rotation point of the seat cushion and the backrest greatly deviates from the relative rotation point of the human lumbar. And the existing seat of this kind can not realize the independent adjustment of leg support under sitting posture or semi-lying posture, and the passenger can not adjust the leg support according to own will, thus greatly influencing the riding comfort of the passenger.

SUMMERY OF THE UTILITY MODEL

The applicant aims at the defects in the prior art, and provides a commercial seat which is simple in structure and convenient to operate, can greatly reduce the dragging and squeezing feeling of the waist and the back of a passenger when the posture of the seat is switched, can realize the independent adjustment of the leg support of the passenger in the sitting posture and the semi-lying posture, and provides higher riding comfort for the passenger.

The utility model discloses the technical scheme who adopts as follows:

a novel adjusting structure of a business chair comprises a backrest, a sitting basin and leg supports, wherein the backrest is connected with the sitting basin through a filling block, the sitting basin is rotatably connected with the leg supports, the bottom of the sitting basin is connected with a sliding mechanism through a support, the sliding mechanism comprises a fixed part and a movable part, the fixed part is fixedly connected with an installation bottom plate, and the movable part linearly slides along the fixed part through a driving mechanism; a filling block guide groove which is connected with the filling block in a sliding way is arranged in the backrest;

the upper part of the backrest is hinged with one end of an upper connecting rod, and the other end of the upper connecting rod is hinged with the armrest box and connected with a hinge point A; the lower part of the backrest is integrally connected with a first middle connecting rod inclined towards the bowl, the rear part of the bowl is integrally connected with a second middle connecting rod inclined towards the backrest, and the first middle connecting rod and the second middle connecting rod are hinged; the back bottom rear side integral type is connected with first lower connecting rod, and the leg holds in the palm the bottom and is connected with the one end of second lower connecting rod, the second lower connecting rod other end with first lower connecting rod is connected.

The further technical scheme is as follows:

the mounting structure of leg support does: including connecting respectively in sitting basin both sides, two legs that extend along the horizontal direction hold in the palm the guide way, the leg hold in the palm one side that is close to sitting the basin in the guide way, install with the leg holds in the palm articulated shaft of rear side, articulated shaft and the detachable sliding connection of leg support guide way, still be connected with displacement sensor on the leg holds in the palm the guide way.

The leg holds in the palm the bottom and articulates with the one end of connecting rod under the second, the second lower connecting rod other end with connect through independent adjusting device between the first lower connecting rod, independent adjusting device's structure is: the gear box is connected with the first lower connecting rod in a rotating mode.

The part of the screw rod extending out of the gear box is provided with an adjusting stop block for limiting the maximum driving distance.

The mounting structure of leg support does: the upper end support is connected with the front side of a sitting basin in a rotating mode through a cylindrical pin, a guide rail is arranged on the bottom face of the upper end support, a sliding block assembly sliding along the guide rail is arranged on the top face of the lower end support, and the bottom face of the lower end support is connected with one end of a second lower connecting rod.

The bottom of the leg support is hinged with one end of a second lower connecting rod, and the other end of the second lower connecting rod is rotatably connected with the first lower connecting rod through a cylindrical pin.

The structure of the sliding mechanism is as follows: including as the female rail of fixed part is regarded as the public rail of movable part, female rail becomes H type structure, with floor fixed connection, public rail also becomes H type structure, slides along the spout of female rail by the drive component drive, and surface mounting has on the public rail is used for fixing the mounting of support.

The packing block adopts soft material, be equipped with compression spring in the packing block guide way, compression spring one end with packing block one end is connected, and the other end is fixed with packing block guide way tank bottom.

The utility model has the advantages as follows:

the utility model has compact and reasonable structure and convenient operation, and is provided with a sliding mechanism which is matched with the free adjustment change of the seat from sitting posture to half lying to flat lying; a filling block is arranged between the backrest and the sitting basin to make up the gap between the backrest and the sitting basin, and meanwhile, the filling block is ensured to automatically fill the gap between the backrest and the sitting basin in the adjusting and changing process; the arrangement of the first middle connecting rod and the second middle connecting rod ensures that the relative rotation point of the backrest and the sitting basin coincides with the inflection point of the waist and back of a human body, so that the pulling feeling is avoided in the adjusting process, and the comfort level is improved; the independent adjusting device is convenient for independently adjusting the position of the leg support in the lying posture state, and has reliable power, simple structure and convenient operation; the leg support provides two implementation modes according to the actual use environment, and the requirement that the posture is freely adjusted to improve the comfort level can be met.

Drawings

Fig. 1 is a schematic view of a sitting posture structure according to a first embodiment of the present invention.

Fig. 2 is a schematic structural view of a half-lying state according to a first embodiment of the present invention.

Fig. 3 is a schematic structural view of a lying state according to a first embodiment of the present invention.

Fig. 4 is a schematic structural diagram of an independent adjusting device according to a first embodiment of the present invention.

Fig. 5 is a schematic perspective view of a second embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a sitting posture state according to a second embodiment of the present invention.

Fig. 7 is a schematic structural view of a half-lying state according to a second embodiment of the present invention.

Fig. 8 is a schematic structural view of a lying state according to a second embodiment of the present invention.

Fig. 9 is a schematic view of an installation structure of the sliding mechanism of the present invention.

Fig. 10 is a schematic structural view in a use state of the present invention.

Wherein: 1. a backrest; 2. sitting in a basin; 3. a leg rest; 4. a mother rail; 5. a public rail; 6. a first lower link; 7. filling blocks; 8. a second lower link; 9. an independent adjusting device; 10. an upper connecting rod; 11. a first middle connecting rod; 12. a second middle connecting rod; 13. a leg rest guide groove; 14. a filling block guide groove; 15. a second motor; 16. a screw rod; 17. adjusting the stop block; 18. clamping a shell; 19. a first motor; 20. a gear case; 21. a flexible shaft; 25. a support; 26. a handrail box; 27. a cylindrical pin; 28. a fixing member; 31. an upper end support; 32. the lower end is supported.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1-4 and 5-8, the novel adjusting structure of the track transportation business seat according to the first and second embodiments of the present invention includes a backrest 1, a sitting basin 2 and a leg rest 3, the backrest 1 is connected with the sitting basin 2 through a filling block 7, the sitting basin 2 is rotatably connected with the leg rest 3, the bottom of the sitting basin 2 is connected with a sliding mechanism through a bracket 25, the sliding mechanism includes a fixed portion and a movable portion, the fixed portion is fixedly connected with an installation bottom plate, and the movable portion slides linearly along the fixed portion through a driving mechanism; a filling block guide groove 14 connected with the filling block 7 in a sliding way is arranged in the backrest 1; the upper part of the backrest 1 is hinged with one end of an upper connecting rod 10, and the other end of the upper connecting rod 10 is hinged with the armrest box 26 and connected with a hinge point A; the lower part of the backrest 1 is integrally connected with a first middle connecting rod 11 inclined towards the direction of the sitting basin 2, the rear part of the sitting basin 2 is integrally connected with a second middle connecting rod 12 inclined towards the direction of the backrest 1, and the first middle connecting rod 11 and the second middle connecting rod 12 are hinged; the rear side of the bottom of the backrest 1 is integrally connected with a first lower connecting rod 6, the bottom of the leg support 3 is connected with one end of a second lower connecting rod 8, and the other end of the second lower connecting rod 8 is connected with the first lower connecting rod 6.

As shown in fig. 9, the sliding mechanism has the structure: including female rail 4 as the fixed part, public rail 5 as the movable part, female rail 4 becomes H type structure, with floor fixed connection, public rail 5 also becomes H type structure, slides along the spout of female rail 4 by the drive assembly drive, and public rail 5 upper surface mounting has the mounting 28 that is used for fixed bolster 25.

The female rail 4 of the H-shaped slide rail is fixedly connected with the carriage floor, and the male rail 5 is fixedly connected with the sitting basin 2 through a support. The second motor 15 drives the male rail 5 to slide on the female rail 4 through a transmission device flexible shaft 21 and a gear box mechanism (not shown) on the male rail 5, so that the seat basin 2 is driven to move back and forth.

As shown in fig. 1 to 3, the mounting structure of the leg rest 3 according to the first embodiment of the present invention is: including connecting respectively in sitting basin 2 both sides, two legs that extend along the horizontal direction hold in the palm guide way 13, and the leg holds in the palm one side that is close to sitting basin 2 in the guide way 13, installs and holds in the palm 3 rear side articulated shafts with the leg, and articulated shafts hold in the palm the detachable sliding connection of guide way 13 with the leg, still is connected with displacement sensor on the leg holds in the palm the guide way 13.

The bottom of the leg support 3 is hinged with one end of a second lower connecting rod 8, the other end of the second lower connecting rod 8 is connected with the first lower connecting rod 6 through an independent adjusting device 9, as shown in fig. 4, the structure of the independent adjusting device 9 is as follows: the gear box comprises a clamping shell 18 fixedly connected to the tail end of a first lower connecting rod 6, a gear box 20 is connected to the clamping shell 18 in a rotating mode, a first motor 19 is further included, the output end of the first motor is connected with the gear box 20, the gear box 20 is in transmission connection with a screw rod 16, and the output end of the screw rod 16 is connected with a second lower connecting rod 8.

The portion of the screw 16 protruding out of the gear box 20 is provided with an adjustment stop 17 defining the maximum driving distance.

When the chair is in a sitting posture or a half lying state, the leg support 3 can be independently adjusted, and the working principle is as follows: when the seat is in the sitting position, as shown in fig. 4, the second lower link 8 is pushed (pulled) by the independent adjusting device 9 to drive the leg rest 3 to turn upward (turn downward). Specifically, the independent adjustment device 9 is connected to the seat system by the first lower link 6 and the second lower link 8. When the leg support 3 needs to be turned upwards for adjustment, the screw rod 16 drives the second lower connecting rod 8 to move forwards under the driving force of the first motor 19 and the gear box 20, so as to drive the leg support 3 to rotate, and meanwhile, the screw rod 16 receives the action of a rotating moment, so that the gear box 20 rotates relative to the clamping shell 18, and the leg support 3 can be smoothly turned upwards. When the leg support 3 needs to be turned downwards for adjustment, the screw rod 16 pulls the second lower connecting rod 8 backwards in the reverse direction, so that the leg support 3 is turned downwards. The maximum pull distance is determined by the position of the adjustment stop 17.

As shown in fig. 1-3, in the three stages of the adjustment and change of the seat, during the conversion process of the posture of the seat, the H-shaped slide rail drives the seat to move forward, the backrest 1 is pulled by the bowl 2 (the H-shaped slide rail male rail 5 is connected with the bracket 25 into a whole) through the upper connecting rod 10 (as shown in fig. 1, the hinge point a is fixedly connected with the armrest box 26 and hinged with the upper connecting rod 10) and the connecting rod falls down, and the relative rotation point of the bowl 2 and the backrest 1 is the hinge point H. When the backrest 1 is inclined downwards, the gap between the backrest 1 and the bowl 2 is compressed, and the filling block 7 slides into the filling block guide groove 14 under the combined action of the compression force and the spring in the filling block guide groove 14. Meanwhile, the first lower connecting rod 6 fixedly connected with the bowl 1 pushes the second lower connecting rod 8 to drive the leg support 3 to turn upwards in the process that the backrest 1 topples downwards, as shown in fig. 2. With the continuous forward movement of the H-shaped public rail 5 and the bowl 2, the backrest 1 continuously falls down to be horizontal under the traction of the bowl 2, and simultaneously the backrest 1 drives the leg support 3 to slide forwards in the leg support guide groove 13 to the most forward position through the first lower connecting rod 6 and the second lower connecting rod 8, as shown in fig. 3. So far, the posture conversion from the sitting posture to the lying posture of the commercial seat is completed, and the conversion process from the lying posture to the sitting posture is the same as the principle.

A hinged shaft hinged with the rear side of the leg support 3 is arranged at one side of the leg support guide groove 13 close to the sitting basin 2, and the hinged shaft is detachably connected with the leg support guide groove 13 in a sliding way;

the detachable sliding connection structure is as follows: before the leg support 3 overturns to the horizontal position, the articulated shaft is relatively fixed at the position of the leg support guide groove 13, after the leg support 3 overturns to the horizontal position, the position of the leg support 3 is sensed by the displacement sensor, the articulated shaft is driven by a corresponding mechanism to be separated from the original fixed position, so that the articulated shaft and the leg support 3 synchronously slide along the leg support guide groove 13 to be in a lying posture. Since the drive structure may be of conventional design in the mechanical field, specific details are not shown.

The utility model discloses the leg of second embodiment holds in palm 3's mounting structure does: including lower extreme support 32 and upper end support 31, the upper end holds in the palm 31 rear side and passes through cylindric lock 27 rotation with the seat basin 2 front side and be connected, is equipped with the guide rail on the upper end support 31 bottom surface, and lower extreme holds in the palm 32 top surface and is equipped with along the gliding sliding block set spare of guide rail, and lower extreme holds in the palm 32 bottom surface and is connected with the one end of second lower connecting rod 8.

The bottom of the leg support 3 is hinged with one end of a second lower connecting rod 8, and the other end of the second lower connecting rod 8 is rotatably connected with the first lower connecting rod 6 through a cylindrical pin 27.

A compression spring is arranged in the filling block guide groove 14, one end of the compression spring is connected with one end of the filling block 7, and the other end of the compression spring is fixed with the bottom of the filling block guide groove 14. The lower extreme of filling block 7 and sit basin 2 fixed connection, filling block 7 adopts soft material, the core material of filling block 7 be the foaming, and the surface material is artificial leather, and spring coupling is passed through inside filling block guide way 14 in the upper end of filling block 7. The utility model discloses a backrest 1 and sit the basin 2 within a definite time and set up the purpose of filling block 7 and be: when the seat is converted from the sitting posture to the lying posture, the filling block 7 slides into the filling block guide groove 14 under the combined action of the extrusion force of the seat pan 2 and the backrest 1 and the tensile force of the spring. When the seat is converted from the lying position to the sitting position, the filling block 7 is pulled out of the filling block guide groove 14 by the pulling force of the bowl 2 and the backrest 1. Through the above movement, the gap between the bowl 2 and the backrest 1 is eliminated.

When the posture of the traditional seat is changed, the rotating point of the backrest and the sitting basin is not overlapped with the twisting point of the waist and the back of a human body, so that the contact part of the back of a passenger and the backrest has stronger pulling feeling in the process of changing from a sitting posture to a lying posture, and the contact part of the back of the passenger and the backrest has strong extrusion feeling in the process of changing from the lying posture to the sitting posture. As shown in fig. 10, the utility model discloses a seat back 1 and the pivot point hinge point H between the basin 2 and the people buttock back between the pivot point H1 coincidence, can be obvious under this condition alleviate dragging and the sense of extrusion of passenger at position of sitting conversion in-process back, very big promotion passenger's the experience of taking a seat.

The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.

Claims

1. The utility model provides a novel regulation structure of commercial affairs seat, includes back (1), sits basin (2) and leg support (3), its characterized in that: the backrest (1) is connected with the sitting basin (2) through a filling block (7), the sitting basin (2) is rotatably connected with the leg support (3), the bottom of the sitting basin (2) is connected with a sliding mechanism through a support (25), the sliding mechanism comprises a fixed part and a movable part, the fixed part is fixedly connected with the mounting bottom plate, and the movable part linearly slides along the fixed part through a driving mechanism; a filling block guide groove (14) which is connected with the filling block (7) in a sliding way is arranged in the backrest (1);

the upper part of the backrest (1) is hinged with one end of an upper connecting rod (10), and the other end of the upper connecting rod (10) is hinged with the armrest box (26) and connected with a hinge point A; the lower part of the backrest (1) is integrally connected with a first middle connecting rod (11) inclined towards the sitting basin (2), the rear part of the sitting basin (2) is integrally connected with a second middle connecting rod (12) inclined towards the backrest (1), and the first middle connecting rod (11) and the second middle connecting rod (12) are hinged; the rear side of the bottom of the backrest (1) is integrally connected with a first lower connecting rod (6), the bottom of the leg support (3) is connected with one end of a second lower connecting rod (8), and the other end of the second lower connecting rod (8) is connected with the first lower connecting rod (6).

2. The new type of adjustment structure for business chairs of claim 1, wherein: the mounting structure of the leg support (3) is as follows: including connecting respectively in sitting basin (2) both sides, two legs that extend along the horizontal direction hold in the palm guide way (13), the leg hold in the palm one side that is close to in guide way (13) and sits basin (2), install with leg holds in the palm the articulated shaft of (3) rear side, and the articulated shaft holds in the palm the detachable sliding connection of guide way (13) with the leg, still be connected with displacement sensor on the leg holds in the palm guide way (13).

3. The new type of adjustment structure for business chairs of claim 2, wherein: leg support (3) bottom is articulated with the one end of second lower connecting rod (8), second lower connecting rod (8) other end with connect through independent adjusting device (9) between first lower connecting rod (6), the structure of independent adjusting device (9) is: including card shell (18) of fixed connection at first lower connecting rod (6) end, card shell (18) internal rotation is connected with gear box (20), still includes motor one (19), and its output is connected with gear box (20), and gear box (20) are connected with a lead screw (16) transmission, lead screw (16) output is connected with second lower connecting rod (8).

4. The new type of adjustment structure for business chairs of claim 3, wherein: the part of the screw (16) extending out of the gear box (20) is provided with an adjusting stop (17) which limits the maximum driving distance.

5. The new type of adjustment structure for business chairs of claim 1, wherein: the mounting structure of the leg support (3) is as follows: including lower extreme support (32) and upper end support (31), upper end support (31) rear side passes through cylindric lock (27) with sit basin (2) front side and rotates to be connected, be equipped with the guide rail on upper end support (31) bottom surface, lower extreme support (32) top surface is equipped with follows the gliding sliding block set spare of guide rail, lower extreme support (32) bottom surface with the one end of second lower connecting rod (8) is connected.

6. The new type of adjustment structure for business chairs of claim 5, wherein: the bottom of the leg support (3) is hinged with one end of a second lower connecting rod (8), and the other end of the second lower connecting rod (8) is rotatably connected with the first lower connecting rod (6) through a cylindrical pin (27).

7. A novel adjustment structure of business chair as claimed in any one of claims 1-6 wherein: the structure of the sliding mechanism is as follows: include as female rail (4) of fixed part, conduct public rail (5) of movable part, female rail (4) one-tenth H type structure, with floor fixed connection, public rail (5) also become H type structure, slide along the spout of female rail (4) by the drive component drive, and surface mounting has on public rail (5) is used for fixing mounting (28) of support (25).

8. The new type of adjustment structure for business chairs of claim 1, wherein: the packing block (7) is made of soft materials, a compression spring is arranged in the packing block guide groove (14), one end of the compression spring is connected with one end of the packing block (7), and the other end of the compression spring is fixed with the bottom of the packing block guide groove (14).