CN114899984B - Motion part state change control system for seat - Google Patents

Abstract

The present invention discloses a control system for state changes of moving parts of a seat, comprising a base, a drive control component, a first moving part and a second moving part; the drive control component comprises a main transmission shaft and an actuator; the first moving part is rotatably connected to the base, and a gear transmission mechanism is provided between the first moving part and the main transmission shaft to enable the two to be linked; the second moving part is arranged at the front end of the base; and the second moving part can slide up and down relative to the base; a linkage component is provided between the main transmission shaft and the second moving part to enable the two to be linked; the first moving part and the second moving part form a linkage under the action of the main transmission shaft; in the initial position, the head of the first moving part is hidden in the base; in the use position, the actuator drives the main transmission shaft to rotate so that the first moving part rotates until its head extends forward, and the main transmission shaft can simultaneously control the second moving part to move downward along the base to avoid the extension action of the first moving part.

Description

A control system for state changes of moving parts of a seat

Technical Field

The invention relates to the field of motor control, and in particular to a control system for state changes of moving parts of a seat.

Background Art

The existing multifunctional leisure seats are rich in functions and are equipped with multiple movable and adjustable moving parts. Such moving parts can rotate, move forward and backward, or move up and down relative to the seat according to the needs of the user. A control and adjustment mechanism for realizing the movement of these moving parts needs to be set inside the seat, and usually one control and adjustment mechanism is used to control one moving part to move. In addition, as the current design of seats is increasingly pursuing a sense of advancement, motors are usually set inside the seats to control the movement of these moving parts, so that users only need to operate them remotely. Sometimes, multiple motors need to be set inside the seat to control different moving parts.

The problem that follows is that the current design of seats is pursuing thinner and lighter, which makes the internal space of the seat back or chassis limited. Sometimes the seat has multiple moving parts at the same position. If a motor is set for each moving part to control its movement, it is undoubtedly difficult to arrange it, and the internal structure of the seat is complicated and cumbersome. Therefore, it is necessary to improve the control structure of these moving parts; specifically: a massage seat with a use position and an initial position, the massage head of the massage seat can be rotated to protrude outside the massage device, and can also be retracted in the massage device; and a support panel that can be adjusted at the front end of the massage device is set. When the massage head is hidden, the support panel can be located in front of the massage device to isolate the effect of the massage head; and when the massage function is required, the massage head is extended forward from the massage device, and the support panel can also move to avoid the extension of the massage head. Then the rotation of the massage head and the movement of the support panel are actually related, and both are set in the massage device of the massage seat; if two motors are used to control the two separately, it is undoubtedly very demanding on the space of the massage device, which will lead to a complicated internal structure of the massage device and increase the difficulty of layout; and setting two motors also increases the cost. Therefore, it is proposed to use a motor to simultaneously control the rotation of the massage head and the movement of the support panel to ensure that both can move stably while solving the problem of space occupation and saving costs.

Summary of the invention

The present invention overcomes the deficiencies in the above-mentioned prior art and provides a control system for the state change of the moving parts of a seat; by arranging a gear transmission mechanism between the main transmission shaft and the first moving part, and arranging a linkage assembly between the main transmission shaft and the second moving part; the rotation of the main transmission shaft can simultaneously control the rotation of the first moving part and the up and down movement of the second moving part; and when the first moving part rotates so that its head extends out of the base, the second moving part can move down along the base to perform an evasive action; the linkage between the first moving part and the second moving part is effectively realized; the movement of the two parts can be controlled simultaneously only by controlling the rotation of the main transmission shaft by an actuator, and the transmission design is ingenious; only an actuator and a main transmission shaft need to be arranged on the base, so that the control structure is more streamlined and the excessive occupation of the base space is reduced.

The technical solution of the present invention is achieved in this way:

A control system for the state change of a moving part of a seat, comprising a base and a drive control assembly arranged on the base, a first moving part and a second moving part; the drive control assembly comprises a main transmission shaft arranged below the base in the left-right direction and an actuator for controlling the rotation of the main transmission shaft; the first moving part is rotatably connected to the base, the upper end of the first moving part has a head, the first moving part can rotate relative to the base so that its head is retracted in the base or its head is extended forward outside the base; a gear transmission mechanism is provided between the first moving part and the main transmission shaft to enable the two to be linked, the gear transmission mechanism comprises a first active tooth arranged on the main transmission shaft and a first driven tooth correspondingly arranged at the lower end of the first moving part; the rotation of the main transmission shaft can drive the first moving part to flip forward and backward relative to the base; the second moving part is longitudinally arranged at the front end of the base; and the second moving part The cam is a second moving part which is movable in and out of the way so that the second moving part can move up and down relative to the base; a linkage assembly is provided between the main transmission shaft and the second moving part to enable the two to be linked, and the linkage assembly includes a second active tooth arranged on the main transmission shaft, a second driven tooth rotatably connected to the base and engaged with the second active tooth, and a driving connecting rod hinged to the second moving part and the second driven tooth at the upper and lower ends respectively; the rotation of the main transmission shaft can act on the linkage assembly to move so as to control the up and down movement of the second moving part; the first moving part and the second moving part are linked under the action of the main transmission shaft; in the initial position, the head of the first moving part is hidden in the base, and the second moving part is located directly in front of the first moving part to form a shield; in the use position, the actuator drives the main transmission shaft to rotate so that the first moving part rotates until its head extends forward, and the main transmission shaft can simultaneously control the second moving part to move downward along the base to avoid the extension of the first moving part.

Preferably, the base includes support platforms located on the left and right sides respectively; the actuator is arranged on the support platform on one side; the main transmission shaft is a long axis, and the main transmission shaft passes through the base in the left and right directions. The main transmission shaft is a long axis, so that the main transmission shaft has a sufficient length to cooperate with the first moving component and the second moving component.

Preferably, the first moving part is rotatably connected between the two support platforms, the first active gear is arranged in the middle of the main transmission shaft, the second active gear is arranged at the side end of the main transmission shaft, and the second active gear is spaced apart from the first active gear. The first active gear and the second active gear are spaced apart on the main transmission shaft, the layout is reasonable, and the two do not interfere with each other.

Preferably, the first driven teeth are mirror-imaged on both sides of the bottom of the first moving part, and the outer contour of the first driven teeth is fan-shaped; the first driving teeth are arranged at corresponding positions in the middle of the main transmission shaft with left and right intervals. The double-gear gear transmission is adopted, so that the main transmission shaft can more stably control the rotation of the first moving part; the first moving part only needs to rotate within a certain angle range to switch between two positions, so the first driven teeth only need to be designed as a fan-shaped structure, which is more reasonable and reduces the occupation of the internal space of the base.

Preferably, the first moving part includes a rotating horizontal axis arranged in the left-right direction, and both ends of the rotating horizontal axis are exposed at the side ends of the first moving part and are rotatably connected to the support platform, so that the rotating structure between the first moving part and the base is stable; the main transmission shaft only needs to provide a driving force to drive the first moving part to rotate.

Preferably, the linkage components are provided between the two sides of the main transmission shaft and the two sides of the second moving part respectively; and the linkage components are close to the inner side of the adjacent support platform. Two sets of linkage components are provided, so that the main transmission shaft drives the second moving part to move more stably; and the linkage components are provided close to the inner side of the support platform, so that the linkage components are separated from the first moving part in the middle of the base, and the two do not interfere with each other; the structural layout is more reasonable.

Preferably, the second driven tooth is rotatably connected to the support platform, and the second driven tooth is located above the second active tooth. The second driven tooth is rotatably connected to the support platform, utilizing the structure of the base itself; and making the linkage component close to the support platform, making the structural design more compact and saving the occupied volume; and the linkage component is arranged longitudinally to reduce the occupation of the front and rear space of the base.

Preferably, the second driven tooth is in a fan-shaped structure, and a connecting seat is provided near the outer periphery of the second driven tooth, and the lower end of the driving connecting rod is hinged on the connecting seat; the connecting seat moves up and down along the rotation trajectory of the second driven tooth to drive the driving connecting rod to move up or down. The rotation of the second driven tooth can drive the driving connecting rod to move up and down, and the transmission design is ingenious; and the connecting seat is arranged at the outer periphery of the second driven tooth, so that the second driven tooth rotates a certain angle, the movement distance of the connecting seat in the vertical direction is the maximum, and the transmission effect is better.

Preferably, the actuator includes a motor and a reducer; the output end of the reducer is connected to the main transmission shaft; a relief groove is recessed along the thickness direction on the outer side of the support platform, the actuator is arranged longitudinally, and the actuator is embedded in the relief groove. The relief groove is arranged on the support platform, so that the actuator is embedded in the relief groove, thereby improving the integrity of the actuator and the support platform and reducing the exposed volume of the actuator.

Preferably, the second moving part is a plate-shaped part, and the left and right sides of the second moving part are respectively provided with connecting side plates, and the upper end of the driving connecting rod is hinged on the connecting side plates; and a sliding guide mechanism is provided between each connecting side plate and the support platform on the corresponding side; the sliding guide mechanism includes a first guide pin and a second guide pin spaced apart from each other on the connecting side plate, and a first longitudinal guide groove and a second longitudinal guide groove correspondingly provided on the support platform; the first guide pin is slidably provided in the first guide groove, and the second guide pin is slidably provided in the second guide groove. The second moving part adopts a double guide rail to slide with the base, so that the sliding process of the second moving part is stable; the main transmission shaft only needs to provide the driving force for the sliding of the second moving part.

The design starting point, concept and beneficial effects of the present invention using the above technical solution are:

First, the control system for the state change of the moving parts of the seat of the present invention is provided by setting a gear transmission mechanism between the main transmission shaft and the first moving part, and setting a linkage assembly between the main transmission shaft and the second moving part; so that the rotation of the main transmission shaft can simultaneously control the rotation of the first moving part and the up and down movement of the second moving part; and when the first moving part rotates so that its head extends out of the base, the second moving part can move down along the base to perform an evasive action; effectively realizing the linkage between the first moving part and the second moving part; only by controlling the rotation of the main transmission shaft through the actuator can the movement of the two parts be controlled at the same time, and the transmission design is ingenious; and the deformation and movement of the first moving part and the second moving part at the same time make the deformation effect better and more technological. Then, only an actuator and a main transmission shaft need to be provided on the base, so that the control structure is more streamlined and the excessive occupation of the base space is reduced.

Secondly, the first driving shaft is a long shaft, so that the first driving shaft has sufficient length to cooperate with the first moving part and the second moving part at the same time; and the first driving teeth are arranged at intervals on the left and right in the middle part of the main transmission shaft; the second driving teeth are arranged on the left and right sides of the main transmission shaft; so that the first driving teeth and the second driving teeth are arranged at intervals on the main transmission shaft; the structure is neat and does not interfere with each other.

Furthermore, the first rotating component is rotatably arranged between the two support platforms; the second moving component is arranged at the front ends of the two support platforms; and the linkage component is arranged close to the inner side of the support platforms; so that the linkage component can be used to act on the movement of the second moving component while the linkage component is close to the support platforms and will not interfere with the first moving component in the middle part of the base; making the structural design more compact and saving occupied volume; and the linkage component is arranged longitudinally to further reduce the occupation of the front and rear space of the base.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a three-dimensional structure of a first moving component and a second moving component in an embodiment of the present invention in an initial position;

FIG2 is a schematic diagram of the three-dimensional structure of the first moving component and the second moving component in the embodiment of the present invention in the use position;

FIG3 is an exploded view of the structure of a control system in an embodiment of the present invention;

FIG4 is a schematic diagram of a three-dimensional structure of the main transmission shaft and the first moving component in the embodiment of the present invention;

FIG5 is a schematic diagram of a three-dimensional structure of the main transmission shaft and the first moving component in another angle in the embodiment of the present invention;

FIG6 is a schematic diagram of a three-dimensional structure of the connection between the second moving component and the base in an embodiment of the present invention;

FIG7 is a schematic diagram of the three-dimensional structure of the linkage assembly in an embodiment of the present invention;

FIG8 is a schematic diagram of the three-dimensional structure of the linkage assembly in the use position according to an embodiment of the present invention;

FIG9 is a schematic diagram of a three-dimensional structure of the actuator connected to the support platform in an embodiment of the present invention;

FIG10 is a schematic diagram of the three-dimensional structure of the first moving component in an embodiment of the present invention;

FIG11 is a schematic diagram of the three-dimensional structure inside the driving assembly in an embodiment of the present invention;

FIG12 is a schematic diagram of a three-dimensional structure of a moving part state change control system for a seat in an embodiment of the present invention applied to the seat;

FIG13 is a schematic diagram of a three-dimensional structure of a moving component state change control system for a seat in an embodiment of the present invention, which is applied to the seat;

FIG. 14 is a schematic diagram of the three-dimensional structure of the base and the chair back frame in the embodiment of the present invention.

The figures are marked as follows: base 1; first moving part 2; second moving part 3; massage manipulator 4; massage head 4a; drive assembly 5; housing 5a; rotating horizontal axis 6; support platform 7; drive control assembly 8; knocking motor 9; gear transmission control assembly 9A; actuator 10; motor 10a; reducer 10b; main transmission shaft 11; first driving tooth 12; first driven tooth 13; connecting side plate 14; rotating connecting rod 14a; first guide pin 15; second guide pin 16; first guide groove 17; second guide groove 18; second driving tooth 19; second driven tooth 20; connecting seat 20a; driving connecting rod 21; chair back frame 22; side support body 22a; travel motor 23; power shaft 24; travel gear 25; toothed belt 26; guide groove 27; avoidance groove 28.

DETAILED DESCRIPTION

In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, the term "at least one" refers to one or more than one, unless otherwise clearly defined. The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

The various directional words involved in this embodiment, such as front, back, etc., are described based on the actual usage position of the user sitting on the seat.

The specific implementation methods of the present invention are as follows:

As shown in Figures 1-14, the present invention provides a control system for the state change of a moving part of a seat, which includes a base 1, a first moving part 2 and a second moving part 3; wherein the first moving part 2 has a massage function, and the first moving part 2 includes two longitudinally arranged massage manipulators 4 and a driving assembly 5 arranged between the two massage manipulators 4; the first moving part 2 has a head at the upper end, which refers to a massage head 4a located at the upper end of each massage manipulator 4, and the driving assembly 5 is used to drive the massage manipulator 4 to perform massage actions such as knocking or pounding; and the first moving part 2 is rotatably connected to the base 1 through a rotating horizontal axis 6, so that the first moving part 2 as a whole can be flipped relative to the base 1, so that the massage manipulator 4 can rotate back and forth relative to the base 1. The base 1 includes support platforms 7 located on the left and right sides respectively, and the first moving component 2 is arranged between the two support platforms 7; the second moving component 3 is movably arranged at the front ends of the two support platforms 7, and the second moving component 3 is a plate-shaped member arranged longitudinally, and the second moving component 3 is configured to form a supporting surface at the front end of the base 1, and the first moving component 2 is surrounded by the base 1 and the second moving component 3; the second moving component 3 can move in the vertical direction relative to the base 1 in response to the rotation action of the massage manipulator 4. A drive control component 8 for simultaneously controlling the flipping of the first moving component 2 and the movement of the second moving component 3 is also provided on the base 1. The first moving part 2 and the second moving part 3 have an initial position and a use position. In the initial position, the massage manipulator 4 tends to be in a vertical upright position, and the second moving part 3 is located directly in front of the massage manipulator 4 to form a shield; in the use position, the drive control component 8 will drive the first moving part 2 to flip so that the massage manipulator 4 rotates forward relative to the base 1, and the massage head 4a will extend forward outside the base 1; and the drive control component 8 will simultaneously drive the second moving part 3 to move downward and backward along the base 1 to avoid the extension of the massage manipulator 4. The drive control component 8 includes a main transmission shaft 11 and an actuator 10 for controlling the rotation of the main transmission shaft 11, and then can control the movement of the main transmission shaft 11 only through one motor, thereby controlling the movement of the first moving part 2 and the second moving part 3 at the same time.

As shown in Figures 12-14, the control system for the state change of the moving parts of the seat is mainly used in the massage movement of the seat, and can be used as a waist support or headrest for the seat; so that the massage function can be easily controlled. Specifically: in the initial position, the massage manipulator 4 is folded between the base 1 and the second moving part 3. At this time, the second moving part 3 supports the user as a support surface for the waist support or headrest. The user cannot feel the existence of the massage manipulator 4, which is no different from the support parts of conventional seats. The structure is beautiful and the massage manipulator 4 is hidden. When the massage function is needed, the first moving part 2 is controlled to rotate to the use position. At this time, the massage head 4a will extend out of the base 1, and the massage manipulator 4 can knock or beat the user to achieve a massage effect; and the second moving part 3 can move downward and backward accordingly to avoid the extension of the massage manipulator 4, and the two do not interfere; and the second moving part 3 can still support the user at this time. Then, through the linkage between the first moving part 2 and the second moving part 3, the seat can be flexibly switched back and forth between the normal support state and the massage use state; the design is ingenious and the use is very flexible.

As shown in Figs. 4, 10 and 11, the rotating horizontal axis 6 is a long axis, and the rotating horizontal axis 6 is completely arranged in the two massage manipulators 4 and the driving assembly 5 along the left and right directions. The two ends of the rotating horizontal axis 6 respectively pass through the first moving part 2 and are rotatably connected to the support platform 7; so that the first moving part 2 as a whole can be stably flipped forward and backward relative to the base 1, and the rotating structure is more stable. And the driving assembly 5 includes a knocking and kneading motor 9, a shell 5a and a gear transmission control assembly 9A arranged in the shell 5a. The knocking and kneading motor 9 works and drives the gear transmission control assembly 9A to move, so as to control the two massage manipulators 4 to perform massage work; the driving assembly 5 adopts the massage movement commonly used in existing seat massage devices, so it is not described here.

As shown in Figures 3-9, the drive control component 8 is used to control the first moving part 2 to rotate relative to the base 1; specifically, the drive control component 8 includes an actuator 10 arranged on the outside of one of the support platforms 7 and a main transmission shaft 11 arranged below the first moving part 2 along the left-right direction, and the actuator 10 is used to control the rotation of the main transmission shaft 11; wherein, the actuator 10 includes a motor 10a and a reducer 10b, and the main transmission shaft 11 is transmission-connected to the output end of the reducer 10b; and an avoidance groove 28 is recessed along the thickness direction on the support platform 7, and the actuator 10 is longitudinally arranged, and the actuator 10 is embedded and installed in the avoidance groove 28; thereby, the integrity of the actuator 10 after being connected to the support platform 7 is better; and the volume of the actuator 10 exposed outside the support platform 7 is reduced. Further, a gear transmission mechanism is provided between the main transmission shaft 11 and the lower end of the first moving part 2, and the gear transmission mechanism includes a first driving tooth 12 provided on the main transmission shaft 11 and a first driven tooth 13 provided at the lower end of the first moving part; specifically, the first driven tooth 13 is provided on both sides of the bottom of the housing 5a of the driving assembly; the first driving tooth 12 can rotate synchronously with the main transmission shaft 9, and the first driving tooth 12 is provided at a corresponding position on the main transmission shaft 11 with a left-right interval, and the two first driving teeth 12 are located in the middle of the main transmission shaft 11. The first driving tooth 12 and the first driven tooth 13 are toothed and matched; so that when the main transmission shaft 11 rotates, the first driving tooth 12 rotates synchronously and drives the first driven tooth 13 to rotate, so that the first moving part 2 will flip relative to the base 1. And under the control of the actuator 10, the first moving part 2 can stay at any adjustment position after flipping, and there is no need to set up a locking structure; the first driving tooth 12 and the first driven tooth 13 can play a locking effect. Furthermore, the outer contour of the first driven tooth 13 is fan-shaped; the massage manipulator 4 is controlled to rotate forward and backward to control the hiding or use of the massage manipulator 4; compared with the structure for controlling the extension and retraction of the massage head in the prior art, it undoubtedly occupies less space on the base 1; the first moving part 2 only needs to rotate within a certain angle range to switch between two states, so the first driven tooth 13 only needs to be designed as a fan-shaped structure, and the design is more reasonable; the main transmission shaft 11 is arranged below the first moving part 2, and the first moving part 2 can be controlled to rotate by controlling the rotation of the main transmission shaft 11, which reduces the occupation of the front and rear space, so that the base 1 can be designed to be lighter and thinner.

As shown in Fig. 1-9, the left and right sides of the second moving part 3 are respectively provided with connecting side plates 14 extending backward; and a sliding guide mechanism is provided between the connecting side plates 14 on either side and the support platform 7 on the corresponding side, and the sliding guide mechanism enables the second moving part 3 to stably move up and down along the base 1. Specifically, the sliding guide mechanism includes a first guide pin 15 and a second guide pin 16 arranged on the connecting side plate 14, and a first guide groove 17 and a second guide groove 18 arranged longitudinally on the support platform 7. The first guide pin 15 is arranged at the upper end of the connecting side plate 14, and the second guide pin 16 is arranged at the middle position of the connecting side plate 14; and the position of the first guide pin 15 is further back than the position of the second guide pin 16. Correspondingly, the first guide groove 17 is located above and behind the second guide groove 18; the first guide pin 15 is slidably arranged in the first guide groove 17, and the second guide pin 16 is slidably arranged in the second guide groove 18. Thus, double-track sliding is realized, so that the second moving part 3 can move smoothly relative to the base 1. As shown in FIG1 , when the massage manipulator 4 is in the initial position, the first guide pin 15 is located at the upper end of the first guide slot 17, and the second guide pin 16 is located at the upper end of the second guide slot 17. As shown in FIG2 , when the massage manipulator 5 rotates forward to the use position, the first guide pin 15 and the second guide pin 16 will move downward to the bottom of the first guide slot 17 and the second guide slot 18; and from front to back, the first guide slot 17 and the second guide slot 18 are both tilted toward the rear and downward, so that the second moving part 3 will move downward to a more rearward position; furthermore, the inclination of the second guide slot 18 is greater than that of the first guide slot 17, so that in this state, from front to back, the second moving part 3 will be in a state of tilting backward and downward, and when the human body is being massaged, the back of the human body is also in a state of tilting backward, which is more in line with the inclination of the back of the user in the massage state and more in line with ergonomics; the design is more thoughtful; and the lower end of the second moving part 3 is more retracted relative to the base 1, making the structure more beautiful and reducing the occupation of the front and rear space of the base 1. In addition, the second moving component 3 is a sheet metal part. If a sheet metal part is used, the second moving component 3 can be designed to be thinner and lighter, further saving the overall volume of the device; and at the same time ensuring the structural strength.

In addition, as shown in Figures 3-9, a linkage component is also provided between the second moving component 3 and the main transmission shaft 11, which enables the second moving component 3 to move synchronously with the rotation of the main transmission shaft 11; specifically: the main transmission shaft 11 is a long axis, and the main transmission shaft 11 passes through the base 1 in the left-right direction, so that the main transmission shaft 11 has enough length to cooperate with the first moving component 2 and the second moving component 3 respectively; the linkage component is longitudinally arranged between the connecting side plate 14 and the main transmission shaft 11; the linkage component includes a second active tooth 19 arranged on the main transmission shaft, a second driven tooth 20 rotatably arranged on the support platform 7 and engaged with the second active tooth 19, and a driving connecting rod 21 hinged at both ends to the second driven tooth 20 and the connecting side plate 14 respectively; the second active tooth 19 can rotate with the main transmission shaft 11 to drive the second driven tooth 20 to rotate; the rotation of the second driven tooth 20 can drive the driving connecting rod 21 to move longitudinally to control the second moving component 3 to move up and down. Specifically, since the second driven tooth 20 only needs to rotate relative to the second active tooth 19 within a certain angle range to effectively control the second moving part 3 to move up and down a sufficient distance; then the second driven tooth 20 is designed as a fan-shaped structure, which can reduce the volume and save materials. And the second driven tooth 20 is rotatably connected to the support platform 7 and is located above the second active tooth 19, using the structure of the base 1 itself; so that the linkage assembly is close to the support platform 7, making the structural design more compact, saving the space occupied by the base 1, and the linkage assembly will not interfere with the first moving part 2. In addition, a connecting seat 20a is provided near the outer periphery of the second driven tooth 20, and the lower end of the driving connecting rod 21 is hinged on the connecting seat 20a; the connecting seat 20a moves up and down along the rotation trajectory of the second driven tooth 20, which can drive the driving connecting rod 21 to move up or down, and the transmission design is ingenious; and the connecting seat 20a is arranged at the outer periphery of the second driven tooth 20, so that the second driven tooth 20 rotates a certain angle, the movement distance of the connecting seat 20a in the vertical direction is the largest, and the transmission effect is better. A rotating connecting rod 14a is provided on the inner side of the connecting side plate 14 along the left-right direction, and the rotating connecting rod 14a is provided at the upper end of the connecting side plate 14; the upper end of the driving connecting rod 21 is hinged on the rotating connecting rod 14a, and the rotating connecting rod 14a is located between the first guide pin 15 and the second guide pin 16.

Then, as shown in Figures 7-9, in the initial position, the connecting seat 20a is located at the upper end of the second driven tooth 20; when the main transmission shaft 11 rotates to control the first moving part 2 to flip forward, the second active tooth 19 will rotate synchronously to drive the second driven tooth 20 to rotate, and the connecting seat 20a will move downward synchronously to drive the driving connecting rod 21 to move downward, and the driving connecting rod 21 will pull the second moving part 3 to move downward along the support platform 7. Thereby, the main transmission shaft 11 can simultaneously drive the first moving part 2 to flip and drive the second moving part 3 to move longitudinally along the support platform 7. And if reset is required, it is only necessary to control the main transmission shaft 11 to rotate in the opposite direction, and the adjustment is very convenient and simple. Furthermore, the main transmission shaft 11 is controlled to rotate by the actuator 10, so that the actuator 10 can simultaneously control the actions of the first moving part 2 and the second moving part 3, and only one motor needs to be set, which saves costs. Furthermore, the two first active teeth 12 are arranged in the middle of the main transmission shaft 11, and the two second active teeth 19 are arranged on the left and right sides of the main transmission shaft 11 respectively; the structure layout is reasonable and compact. The linkage assembly is arranged longitudinally and close to the inner side of the support platform 7, and will not interfere with the first moving component 2; thus, the overall structure layout is neat, and the space occupied by the base 1 is reasonably allocated, so that the base 1 can be designed to be relatively light and thin.

As shown in Figures 12-14, the control system is specifically used in the massage mechanism of a seat, the seat includes a backrest frame 22, the backrest frame 22 includes side supports 22a located on the left and right sides respectively, and the base 1 is connected between the two side supports 22a; so that the massage support device can be used as a waist support component or a headrest component of the seat back; in the massage state, the massage manipulator 4 extends and can massage and relax the user's waist or head; and in the initial position, the second moving component 3 is located in the front, and the second moving component 3 can play the role of a waist support or a headrest to provide support. The massage support device can provide a massage function and can also be used as a support component; the use function is richer and the use is more flexible.

Further, the base 1 can also slide up and down relative to the side support 22a, specifically, a travel motor 23 and a power shaft 24 controlled by the travel motor 23 are provided at the upper end of the base 1, the two ends of the power shaft 24 are respectively located outside the base 1, and travel gears 25 are respectively provided at the two ends of the power shaft 24; along the length direction of the side support 22a, a toothed belt 26 capable of engaging with the travel gear 25 is correspondingly provided on the side support 22a. A guide groove 27 arranged along the length direction is also provided on the inner side of the side support 22a; both ends of the main transmission shaft 11 and both ends of the power shaft 24 are slidably restricted in the guide groove 27; then, under the control of the travel motor 23, the base 1 can be moved up and down along the chair back frame 22; thereby, the height of the massage support device on the chair back frame 22 can be further adjusted.

The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims (10)

1. A motion component state change control system for a seat, characterized by: the device comprises a base, a driving control assembly, a first moving part and a second moving part, wherein the driving control assembly, the first moving part and the second moving part are arranged on the base; the drive control assembly comprises a main transmission shaft arranged below the base along the left-right direction and an actuator for controlling the rotation of the main transmission shaft; the first moving part is rotatably connected to the base, the upper end of the first moving part is provided with a head, and the first moving part can rotate relative to the base so as to enable the head to be folded in the base or enable the head to extend forwards out of the base; a tooth transmission mechanism for enabling the first moving part and the main transmission shaft to generate linkage is arranged between the first moving part and the main transmission shaft, and the tooth transmission mechanism comprises a first driving tooth arranged on the main transmission shaft and a first driven tooth correspondingly arranged at the lower end of the first moving part; the rotation of the main transmission shaft can drive the first moving part to turn back and forth relative to the base; the second moving part is longitudinally arranged at the front end of the base; the second moving part can slide up and down relative to the base; a linkage assembly for enabling the main transmission shaft and the second moving part to generate linkage is arranged between the main transmission shaft and the second moving part, and the linkage assembly comprises a second driving tooth arranged on the main transmission shaft, a second driven tooth rotationally connected on the base and in tooth joint fit with the second driving tooth, and a driving connecting rod with upper and lower ends respectively hinged with the second moving part and the second driven tooth; the rotation of the main transmission shaft can act on the movement of the linkage assembly to control the up-and-down movement of the second moving part; the first moving part and the second moving part form linkage under the action of the main transmission shaft; in the initial position, the head of the first moving part is hidden in the base, and the second moving part is positioned right in front of the first moving part to form a shelter; in the use position, the actuator drives the main transmission shaft to rotate so that the first moving part rotates until the head of the first moving part extends forwards, and the main transmission shaft can simultaneously control the second moving part to move downwards along the base so as to avoid the extending action of the first moving part.

2. The moving part state change control system for a seat according to claim 1, wherein: the base comprises supporting tables respectively positioned at the left side and the right side; the actuator is arranged on the supporting table at one side; the main transmission shaft is a long shaft and penetrates through the base along the left-right direction.

3. The moving part state change control system for a seat according to claim 2, wherein: the first moving part is rotatably connected between the two supporting tables, and the first driving teeth are arranged at the middle part of the main transmission shaft; the second driving teeth are arranged at the side end of the main transmission shaft and are spaced from the first driving teeth.

4. A moving part state change control system for a seat according to claim 3, wherein: the first driven teeth are arranged on two sides of the bottom of the first moving part in a mirror image mode, and the outer contour of the first driven teeth is in a fan shape; the first driving teeth are arranged at the corresponding positions of the middle part of the main transmission shaft at left and right intervals.

5. The moving part state change control system for a seat according to claim 4, wherein: the first moving part comprises a rotation transverse shaft which is arranged along the left-right direction, and two ends of the rotation transverse shaft are respectively exposed at the side ends of the first moving part and are in rotary connection with the supporting table.

6. A moving part state change control system for a seat according to claim 3, wherein: the linkage assembly is arranged between the two sides of the main transmission shaft and the two sides of the second moving part respectively; and the linkage assembly is close to the inner side of the adjacent supporting table.

7. The moving part state change control system for a seat according to claim 6, wherein: the linkage assembly is longitudinally arranged; the second driven teeth are rotatably connected to the supporting table, and the second driven teeth are located above the second driving teeth.

8. The moving part state change control system for a seat according to claim 7, wherein: the second driven teeth are in a fan-shaped structure, a connecting seat is arranged at the position, close to the outer periphery, of the second driven teeth, and the lower end of the driving connecting rod is hinged to the connecting seat; the connecting seat moves up and down along the rotation track of the second driven tooth so as to drive the driving connecting rod to move up or down.

9. The moving part state change control system for a seat according to claim 2, wherein: the actuator includes a motor and a decelerator; the output end of the speed reducer is in transmission connection with the main transmission shaft; an avoidance groove is concavely formed in the outer side of the supporting table along the thickness direction, the actuator is longitudinally arranged, and the actuator is embedded and installed in the avoidance groove.

10. The moving part state change control system for a seat according to claim 2, wherein: the second moving part is a plate-shaped part, the left side and the right side of the second moving part are respectively provided with a connecting side plate, and the upper end of the driving connecting rod is hinged on the connecting side plate; a sliding guide mechanism is arranged between each connecting side plate and the supporting table on the corresponding side; the sliding guide mechanism comprises a first guide pin and a second guide pin which are arranged on the connecting side plate and are vertically spaced, and a longitudinal first guide groove and a longitudinal second guide groove which are correspondingly arranged on the supporting table; the first guide pin is slidably disposed in the first guide slot, and the second guide pin is slidably disposed in the second guide slot.