CN112841983A

CN112841983A - Sofa adjustment mechanism

Info

Publication number: CN112841983A
Application number: CN202110232715.XA
Authority: CN
Inventors: 刁冬红
Original assignee: Shanghai Zisong Enterprise Management Co ltd
Current assignee: Shanghai Zisong Enterprise Management Co ltd
Priority date: 2021-03-05
Filing date: 2021-03-05
Publication date: 2021-05-28

Abstract

The invention discloses a sofa adjusting mechanism which comprises a seat framework, wherein one side of the upper part of the seat framework is hinged with a backrest framework, the bottom of the seat framework is provided with a seat support, a translation structure is connected between the seat support and the seat framework, one side of the seat framework, which is far away from a backrest hanging rack, is connected with an adjustable leg supporting structure, the middle part and the upper end of the backrest framework are respectively hinged with an adjustable waist supporting plate and a head supporting plate, and the leg supporting structure, the waist supporting plate and the head supporting plate are all connected with a driving device; the seat skeleton can slide on the seat support, and back skeleton, shank bearing structure, set up waist backup pad, the head backup pad on the back skeleton all can carry out free angle and adjust, have increased sofa regulatory function, satisfy more regulation needs, improve consumer's quality of life.

Description

Sofa adjustment mechanism

Technical Field

The invention belongs to the technical field of sofas, and relates to a sofa adjusting mechanism.

Background

The sofa can be divided into a civil sofa and a functional sofa basically, the civil sofa is mostly provided with wooden feet nails and can not shake, and the function is single. The general functional sofa has the basic functions of sitting, and has advantages in storage, structure and multiple functions, but the functions really embodied on the sofa body are obviously few, and the sofa required by consumers is a multifunctional sofa which drives all parts of the whole body to operate.

With the improvement of life quality, consumers pay more attention to whether the functions of the sofa are beneficial to human bodies in consideration of cost performance and the colleagues meeting basic functions, so that the sofa seat is required to have more and more adjusting functions, and a sofa adjusting mechanism with more adjusting functions is required.

Disclosure of Invention

Aiming at the problems, the invention provides a sofa adjusting mechanism which well solves the problem that the sofa function in the prior art is less in adjustment.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the utility model provides a sofa adjustment mechanism, includes the seat skeleton, seat skeleton upper portion one side articulates there is the back skeleton, and seat skeleton bottom is provided with the seat support, be connected with the translation structure between seat support and the seat skeleton, one side that the back stores pylon was kept away from to the seat skeleton is connected with adjustable shank bearing structure, back skeleton middle part and upper end articulate respectively has adjustable waist backup pad and head backup pad, shank bearing structure, waist backup pad, head backup pad all are connected with drive arrangement.

Further, drive arrangement includes synchro-drive shaft, the first driving motor of drive synchro-drive shaft pivoted and connects in the planetary gear structure at synchro-drive shaft both ends, planetary gear structural connection has the fixed bolster that is fixed in on back skeleton or the seat skeleton, first driving motor connects on one of them fixed bolster, and planetary gear structure still is connected with the drive lever, the drive lever can be connected with shank bearing structure, waist backup pad, head backup pad.

Furthermore, the planetary gear structure includes fixed ring gear, superpose in the motion ring gear of fixed ring gear one side, be located sun gear and the planet wheel at fixed ring gear center, the internal tooth portion of motion ring gear corresponds with the internal tooth portion of fixed ring gear, the meshing of planet wheel and sun gear external tooth portion, fixed ring gear internal tooth portion and motion ring gear internal tooth portion, fixed ring gear, motion ring gear and sun gear coaxial coupling are in synchro drive shaft's tip, fixed ring gear fixed connection is on the fixed bolster, motion ring gear fixed connection is on the initiative pole.

Furthermore, the planet wheels are provided with a plurality of positioning rings, and the plurality of planet wheels are arranged on the positioning rings in a circumferential rotating mode along the positioning rings.

Further, the moving gear ring and the fixed gear ring have the same diameter.

Furthermore, a tooth difference exists between the fixed gear ring and the moving gear ring, and the number of the tooth difference between the fixed gear ring and the moving gear ring is a natural number between 2 and 4.

Furthermore, the synchronous transmission shaft is a spline shaft, and a spline groove sleeved on the synchronous transmission shaft is formed in the inner diameter of the sun gear.

Furthermore, a disc spring and an adjusting ring are respectively arranged on two sides of the sun gear, a groove for inserting the adjusting ring is formed in the fixed gear ring, a mounting platform is arranged on the edge of the adjusting ring, a mounting boss matched with the mounting platform is arranged in the groove, and the thickness of the adjusting ring is larger than the depth of the groove.

Furthermore, the translation structure comprises a slide rail fixed on the bottom surface of the seat framework, a slide groove fixed on the seat support and matched with the slide rail to slide, an adjusting rod with one end hinged on the seat support and a second driving motor fixed on the bottom surface of the seat framework, wherein the second driving motor can slide on the adjusting rod in a reciprocating manner through a screw rod threaded structure.

Further, shank bearing structure includes first driven lever, second driven lever, third driven lever and shank backup pad, first driven lever one end second driven lever one end is articulated, and the other end of first driven lever articulates on the seat support, and the other end of second driven lever is connected in the one end of shank backup pad, and the one end that the drive lever that the drive arrangement that is close to shank bearing structure on the seat skeleton and connects deviates from synchronous drive shaft articulates in the one end of third driven lever, and the other end of third driven lever articulates in the middle part of shank backup pad, the middle part of second driven lever articulated with the middle part of drive lever.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the seat framework can slide on the seat support, and the backrest framework, the leg supporting structure, the waist supporting plate arranged on the backrest framework and the head supporting plate can be freely adjusted in angle, so that the sofa adjusting function is increased, more adjusting requirements are met, and the life quality of consumers is improved.

2. According to the invention, the planetary gear has a simple structure, can realize 360-degree rotation, can be suitable for different occasions, has good universality and reduced manufacturing cost, and has good operation stability, durability and low noise by driving the connected adjusting mechanism through the connected driven rod.

3. According to the invention, the planet wheel can be prevented from rotating by correspondingly superposing the fixed gear ring internal tooth part and the moving gear ring internal tooth part and the existence of the tooth difference between the fixed gear ring internal tooth part and the moving gear ring internal tooth part, so that the locking function of the adjusting mechanism is realized.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a perspective view of the present invention in another orientation;

FIG. 3 is a front view of the present invention;

FIG. 4 is an exploded view of the planetary gear of the present invention;

FIG. 5 is an enlarged view of portion A of FIG. 1;

FIG. 6 is an enlarged view of portion B of FIG. 2;

fig. 7 is an enlarged view of a portion C in fig. 3.

In the figure: the seat comprises a seat framework (1), a backrest framework (2), a seat support (3), a translation structure (4), a leg supporting structure (5), a waist supporting plate (6), a head supporting plate (7), a synchronous transmission shaft (8), a first driving motor (9), a fixed support (10), a driving rod (11), a fixed gear ring (12), a moving gear ring (13), a sun wheel (14), a planet wheel (15), a positioning ring (16), a disc-shaped spring (17), an adjusting ring (18), a groove (19), a sliding rail (41), a sliding groove (42), an adjusting rod (43), a second driving motor (44), a first driven rod (51), a second driven rod (52), a third driven rod (53) and a leg supporting plate (54).

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-3, the sofa adjusting mechanism according to the present invention includes a seat frame 1, a backrest frame 2 is hinged to one side of the upper portion of the seat frame 1, a seat support 3 is disposed at the bottom of the seat frame 1, a translation structure 4 is connected between the seat support 3 and the seat frame 1, an adjustable leg support structure 5 is connected to one side of the seat frame 1 away from the backrest hanging rack, an adjustable waist support plate 6 and a head support plate 7 are respectively hinged to the middle portion and the upper end of the backrest frame 2, and the leg support structure 5, the waist support plate 6 and the head support plate 7 are all connected to a driving device; in the structure, the driving device is used for extending the leg supporting structure 5, adjusting the angles of the waist supporting plate 6 and the head supporting plate 7 and supporting the legs, the waist and the head of a user, and the translation structure 4 is used for adjusting the transverse positions of the seat framework 1 and the seat support 3.

In this embodiment, the seat frame 1, the seat support 3 and the backrest support are formed by welding a plurality of square pipes or circular pipes, and are simple in structure and convenient to manufacture.

In this embodiment, as shown in fig. 1, 4 and 5, the driving device includes a synchronous transmission shaft 8, a first driving motor 9 for driving the synchronous transmission shaft 8 to rotate, and a planetary gear structure connected to two ends of the synchronous transmission shaft 8, the planetary gear structure is connected to a fixing bracket 10 fixed on the backrest frame 2 or the seat frame 1, the first driving motor 9 is connected to one of the fixing brackets 10, the planetary gear structure is further connected to a driving rod 11, and the driving rod 11 can be connected to the leg support structure 5, the waist support plate 6 and the head support plate 7. Specifically, the planetary gear structure comprises a fixed gear ring 12, a moving gear ring 13 superposed on one side of the fixed gear ring 12, a sun gear 14 positioned at the center of the fixed gear ring 12 and a planet gear 15, wherein an internal tooth part of the moving gear ring 13 corresponds to an internal tooth part of the fixed gear ring 12, the planet gear 15 is meshed with an external tooth part of the sun gear 14, an internal tooth part of the fixed gear ring 12 and an internal tooth part of the moving gear ring 13, the fixed gear ring 12, the moving gear ring 13 and the sun gear 14 are coaxially connected to the end part of the synchronous transmission shaft 8, the fixed gear ring 12 is fixedly connected to the fixed support 10, and the moving gear ring 13 is fixedly connected to the driving; during installation, the synchronous transmission shaft 8 adopts a spline shaft, and a spline groove sleeved on the synchronous transmission shaft 8 is formed in the inner diameter of the sun gear 14, so that the structure is simple, and the position of the planetary gear mechanism on the synchronous transmission shaft 8 is convenient to adjust; the first driving motor 9 drives the synchronous transmission shaft 8 to rotate, the rotation of the synchronous transmission shaft 8 can drive the sun gear 14 to rotate, the fixed gear ring 12 is static relative to the synchronous transmission shaft 8, and the driving rod 11 rotates along with the moving gear ring 13 to drive the waist supporting plate 6, the head supporting plate 7 to rotate and the leg supporting structure 5 to extend. The first driving motor 9 is a speed reducing motor, the speed reducing adjustment of the first driving motor 9 is realized by a worm gear and worm and gear transmission structure, and the output gear of the first driving motor 9 is connected to the synchronous transmission shaft 8.

In this embodiment, as shown in fig. 4, a plurality of planet wheels 15 are provided, a positioning ring 16 is provided between the outer tooth portion of the sun gear 14 and the inner tooth portion of the fixed ring gear 12 or between the outer tooth portion of the sun gear 14 and the inner tooth portion of the moving ring gear 13, and the plurality of planet wheels 15 are rotatably mounted on the positioning ring 16 along the circumferential direction of the positioning ring 16; the sun gear 14 can drive the planet gear 15 to rotate when rotating, the planet gear 15 performs two sets of motions under the action of the fixed gear ring 12 and the sun gear 14, firstly performs revolution motion around the center of the sun gear 14, secondly performs rotation motion around the axis of the planet gear 15, the moving gear ring 13 rotates by taking the center of the synchronous transmission shaft 8 as a shaft under the driving of the planet gear 15, and the moving gear ring 13 rotates to drive the driven rod to rotate.

In this embodiment, the diameters of the moving gear ring 13 and the fixed gear ring 12 are the same, a tooth difference exists between the fixed gear ring 12 and the moving gear ring 13, the number of the tooth differences between the fixed gear ring 12 and the moving gear ring 13 is a natural number between 2 and 4, and by means of the corresponding overlapping of the internal tooth part of the fixed gear ring 12 and the internal tooth part of the moving gear ring 13 and the existence of the tooth difference between the internal tooth part of the fixed gear ring 12 and the internal tooth part of the moving gear ring 13, the planet gears 15 can be prevented from rotating, and therefore the locking function of the adjusting mechanism can be.

In this embodiment, as shown in fig. 4, a disc-shaped spring 17 and an adjusting ring 18 are respectively disposed on two sides of the sun gear 14, a groove 19 into which the adjusting ring 18 is inserted is disposed in the fixed gear ring 12, a mounting platform is disposed on an edge of the adjusting ring 18, a mounting boss matched with the mounting platform is disposed in the groove 19, and a thickness of the adjusting ring 18 is greater than a depth of the groove 19; the adjusting ring 18 can be prevented from rotating, abnormal sound generated by the rotation of the adjusting ring 18 is avoided, the thickness of the adjusting ring 18 is larger than the depth of the groove 19, the side surface of the sun gear 14 is prevented from contacting with the fixed gear ring 12, noise generated by the rotation of the sun gear 14 is reduced, and the use reliability of the invention is improved.

In this embodiment, as shown in fig. 3, 6, and 7, the translation structure 4 includes a sliding rail 41 fixed on the bottom surface of the seat frame 1, a sliding groove 42 fixed on the seat frame 3 and capable of sliding in cooperation with the sliding rail 41, an adjusting rod 43 with one end hinged on the seat frame 3, and a second driving motor 44 fixed on the bottom surface of the seat frame 1, where the second driving motor 44 is capable of reciprocating on the adjusting rod 43 through a screw-rod threaded structure; the output shaft of the second driving motor 44 is connected with a nut rotating along with the output shaft, the adjusting rod 43 is sleeved with threads, the second driving motor 44 rotates, the nut and the adjusting rod 43 are driven by the threads of the lead screw, and the sliding rail 41 slides along the sliding groove 42, so that the seat framework 1 and the seat support 3 can move horizontally.

In the present embodiment, as shown in fig. 2 and 1, the leg support structure 5 includes a first driven link 51, a second driven link 52, a third driven link 53 and a leg support plate 54, one end of the first driven link 51 is hinged to one end of the second driven link 52, the other end of the first driven link 51 is hinged to the seat support 3, the other end of the second driven link 52 is connected to one end of the leg support plate 54, one end of the driving link 11, which is connected to the driving device of the leg support structure 5 and is close to the driving device, of the seat frame 1, which is away from the synchronizing transmission shaft 8, is hinged to one end of the third driven link 53, the other end of the third driven link 53 is hinged to a middle portion of the leg support plate 54, and a middle portion of the second driven link 52 is hinged to; when the leg support structure 5 is extended, the driving link 11 is driven by the driving device to rotate counterclockwise, and drives the first driven link 51, the second driven link 52, and the third driven link 53 to rotate around their respective hinge axes, so as to raise the leg support plate 54 and rotate to a horizontal position, thereby supporting the legs of the user.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. A sofa adjustment mechanism, its characterized in that: including the seat skeleton, seat skeleton upper portion one side articulates there is the back skeleton, and seat skeleton bottom is provided with the seat support, be connected with the translation structure between seat support and the seat skeleton, one side that the back stores pylon was kept away from to the seat skeleton is connected with adjustable shank bearing structure, back skeleton middle part and upper end articulate respectively has adjustable waist backup pad and head backup pad, shank bearing structure, waist backup pad, head backup pad all are connected with drive arrangement.

2. The sofa adjustment mechanism according to claim 1, wherein: drive arrangement includes synchro-drive shaft, the first driving motor of drive synchro-drive shaft pivoted and connects in the planetary gear structure at synchro-drive shaft both ends, planetary gear structural connection has the fixed bolster that is fixed in on back skeleton or the seat skeleton, first driving motor connects on one of them fixed bolster, and planetary gear structure still is connected with the drive lever, the drive lever can be connected with shank bearing structure, waist backup pad, head backup pad.

3. The sofa adjustment mechanism according to claim 1, wherein: the planetary gear structure includes fixed ring gear, superpose in the motion ring gear of fixed ring gear one side, be located sun gear and the planet wheel at fixed ring gear center, the interior tooth portion of motion ring gear corresponds with the internal tooth portion of fixed ring gear, the meshing of tooth portion and motion ring gear internal tooth portion in planet wheel and the outer tooth portion of sun gear, fixed ring gear and sun gear coaxial coupling in synchro-drive shaft's tip, fixed ring gear fixed connection is on the fixed bolster, motion ring gear fixed connection is on the initiative pole.

4. The sofa adjustment mechanism according to claim 3, wherein: the planet gears are arranged in a plurality of numbers, positioning rings are arranged between the outer tooth portions of the sun gear and the inner tooth portions of the fixed gear ring or between the outer tooth portions of the sun gear and the inner tooth portions of the moving gear ring, and the planet gears are mounted on the positioning rings in a circumferential rotating mode along the positioning rings.

5. The sofa adjustment mechanism according to claim 3, wherein: the moving gear ring and the fixed gear ring have the same diameter.

6. The sofa adjustment mechanism according to claim 3, wherein: and a tooth difference exists between the fixed gear ring and the moving gear ring, and the number of the tooth difference between the fixed gear ring and the moving gear ring is a natural number between 2 and 4.

7. The sofa adjustment mechanism according to claim 3, wherein: the synchronous transmission shaft is a spline shaft, and a spline groove sleeved on the synchronous transmission shaft is formed in the inner diameter of the sun gear.

8. The sofa adjustment mechanism according to claim 3, wherein: the sun gear is characterized in that a disc spring and an adjusting ring are respectively arranged on two sides of the sun gear, a groove for the adjusting ring to insert is formed in the fixed gear ring, a mounting platform is arranged on the edge of the adjusting ring, a mounting boss matched with the mounting platform is arranged in the groove, and the thickness of the adjusting ring is larger than the depth of the groove.

9. The sofa adjustment mechanism according to claim 1, wherein: the translation structure comprises a sliding rail fixed on the bottom surface of the seat framework, a sliding groove fixed on the seat support and capable of sliding in a matched mode with the sliding rail, an adjusting rod with one end hinged to the seat support and a second driving motor fixed on the bottom surface of the seat framework, and the second driving motor can slide on the adjusting rod in a reciprocating mode through a screw rod threaded structure.

10. The sofa adjustment mechanism according to claim 2, wherein: shank bearing structure includes first driven lever, second driven lever, third driven lever and shank backup pad, first driven lever one end second driven lever one end is articulated, and the other end of first driven lever articulates on the seat support, and the other end of second driven lever is connected in the one end of shank backup pad, and the one end that the drive lever that the drive arrangement that is close to shank bearing structure on the seat skeleton is connected deviates from synchronous drive shaft articulates in the one end of third driven lever, and the other end of third driven lever articulates in the middle part of shank backup pad, the middle part of second driven lever articulated with the middle part of drive lever.