A zero-gravity electric seat

Abstract

The present invention relates to the field of seat technology, and in particular to a zero-gravity electric seat, comprising a chassis, a driving mechanism, a transmission assembly, an anti-pinch assembly and a connecting rod device, wherein the transmission assembly is movably arranged on the chassis, the main body of the driving mechanism is installed on the chassis, the telescopic end of the driving mechanism is connected to the connecting rod device via the transmission assembly, and the connecting rod device comprises two zero-gravity linkage mechanisms respectively arranged on both sides of the chassis, and the zero-gravity linkage mechanism comprises a chair back group, a seat cushion group and a footrest group. The electric seat has a reasonable structural design, can achieve a zero-gravity experience effect, has a good sense of comfort, and has a good anti-pinch performance, reduces the probability of accidents, and improves safety performance.

Description

Technical Field

[0001] The invention relates to the technical field of seats, in particular to a zero-gravity electric seat. Background Art

[0002] Chairs are commonly used in daily life. In order to facilitate rest, there are seats with adjustable backrest and leg tilt angles on the market. By adjusting the backrest and leg tilt angles, users can rest in a semi-lying position on the seats. However, most seats on the market lack anti-pinch design. When users use the seats, obstacles can easily enter under the legs of the seats. When the legs retract, the seats or obstacles can be damaged due to forced rigid contraction, which can easily lead to accidents and low safety performance. Summary of the invention

[0003] In order to solve the above technical problems, the object of the present invention is to provide a zero-gravity electric seat.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] A zero-gravity electric chair comprises a chassis, a driving mechanism, a transmission assembly, an anti-pinch assembly and a connecting rod device, wherein the transmission assembly is movably arranged on the chassis, the main body of the driving mechanism is installed on the chassis, the telescopic end of the driving mechanism is driven and connected to the connecting rod device via the transmission assembly, the connecting rod device comprises two zero-gravity linkage mechanisms respectively arranged on both sides of the chassis, the zero-gravity linkage mechanism comprises a seat back group, a cushion group and a footrest group, both sides of the chassis are provided with hinged strips, the seat back group comprises a seat back board, a first seat back rod, a second seat back rod and a third seat back rod, one end of the first seat back rod is hinged to the hinged strip, the other end of the first seat back rod is hinged to one end of the second seat back rod, the other end of the second seat back rod is hinged to one end of the third seat back rod, and the other end of the third seat back rod is hinged to the bottom of the seat back board The seat cushion group includes a seat cushion plate, a first seat cushion rod, a second seat cushion rod, a third seat cushion rod, a fourth seat cushion rod, a fifth seat cushion rod, a sixth seat cushion rod and a seventh seat cushion rod, one end of the first seat cushion rod is hinged to the hinge strip, the other end of the first seat cushion rod is hinged to one end of the second seat cushion rod, the middle part of the first seat cushion rod is hinged to one end of the third seat cushion rod, the other end of the second seat cushion rod is hinged to the middle part of the fourth seat cushion rod, the other end of the third seat cushion rod is hinged to one end of the fifth seat cushion rod, the middle part of the fifth seat cushion rod is hinged to the middle part of the fourth seat cushion rod, one end of the fourth seat cushion rod is hinged to the middle part of the seat back plate, the seat cushion plate is installed on the top of the fourth seat cushion rod, the middle part of the second seat cushion rod is hinged to one end of the sixth seat cushion rod, the other end of the sixth seat cushion rod is hinged to the middle part of the second chair back rod, One end is hinged to the other end of the fifth cushion rod, the foot support group includes a foot support plate connecting rod, a first foot support rod, a second foot support rod, a third foot support rod, a fourth foot support rod, a fifth foot support rod, a sixth foot support rod, a seventh foot support rod and an eighth foot support rod, one end of the first foot support rod is hinged to the other end of the fourth cushion rod, the other end of the first foot support rod is hinged to one end of the second foot support rod, the other end of the second foot support rod is hinged to one end of the third foot support rod, the middle part of the third foot support rod is hinged to one end of the fourth foot support rod, the other end of the fourth foot support rod is hinged to one end of the foot support plate connecting rod, the middle part of the foot support plate connecting rod is hinged to one end of the fifth foot support rod, the middle part of the fifth foot support rod is hinged to the middle part of the first foot support rod, the other end of the fifth foot support rod is hinged to one end of the sixth foot support rod, and the other end of the sixth foot support rod The seventh seat cushion rod is hinged to the middle part of the fourth seat cushion rod, the other end of the seventh seat cushion rod is hinged to the middle part of the sixth foot support rod, one end of the seventh foot support rod is hinged to the middle part of the sixth foot support rod, the other end of the seventh foot support rod is hinged to one end of the eighth foot support rod, the two output ends of the transmission assembly respectively pass through the middle part of the fourth seat cushion rod of the two zero-gravity linkage mechanisms and then are connected to the other end of the eighth foot support rod, the anti-pinch assembly includes a foot support plate fixing seat and an elastic member, one end of the foot support plate fixing seat is hinged to the other end of the third foot support rod, one end of the elastic member is connected to the bottom of the third foot support rod, the other end of the elastic member is connected to the middle part of the foot support plate fixing seat, the other end of the foot support plate fixing seat extends in the direction close to the foot support plate connecting rod, and the third foot support rod and the foot support plate fixing seat are in a folded state under the elastic force of the elastic member.

[0006] Furthermore, the transmission assembly includes a transmission rod and two transmission plates, the bottoms of the two transmission plates are respectively hinged to the two opposite outer walls of the telescopic end of the driving mechanism, the tops of the two transmission plates are respectively hinged to the middle part of the transmission rod, the length direction of the transmission rod is perpendicular to the telescopic end of the driving mechanism, and the two ends of the transmission rod in the length direction respectively penetrate the middle part of the fourth cushion rod of the two zero-gravity linkage mechanisms and then are connected to the other end of the eighth foot support rod.

[0007] Furthermore, a first connecting rod and a second connecting rod are arranged between the two zero-gravity linkage mechanisms, and the two ends of the first connecting rod are respectively connected to the middle parts of the second seat back rods of the two zero-gravity linkage mechanisms, and the two ends of the second connecting rod are respectively connected to the other ends of the footrest connecting rods of the two zero-gravity linkage mechanisms.

[0008] Furthermore, a swing groove is arranged at one end of the foot support plate fixing seat away from the foot support plate connecting rod, and a limiting column is arranged at the other end of the third foot support rod. The limiting column protrudes into the swing groove, and the swing groove is in an arc shape.

[0009] Furthermore, the elastic member is a tension spring.

[0010] Furthermore, a first hanging ring is provided in the middle of the foot support plate fixing seat, a second hanging ring is provided at the bottom of the third foot support rod, one end of the elastic member is hooked on the first hanging ring, and the other end of the elastic member is hooked on the second hanging ring.

[0011] Beneficial effects of the present invention: In practical applications, the back cushion is mounted on the two backrest boards of the chair back group, the seat cushion is mounted on the two cushion boards of the seat cushion group, and the footrest board is mounted on the two footrest board fixing seats of the footrest group. After the user sits on the electric chair, the telescopic end of the driving mechanism extends to drive the transmission assembly to move, and the two ends of the moving transmission assembly respectively drive the two zero-gravity linkage mechanisms to extend. Under the synchronous operation of the two zero-gravity linkage mechanisms, the two backrest boards are tilted backward and downward, the seat cushion board is tilted forward and upward, and the footrest board connecting rod and the footrest board fixing seat are synchronously tilted forward and upward. The electric chair is in a zero-gravity state. Since the user's legs are raised slightly higher than the heart, the pressure on the spine and joints can be reduced, and the comfort is good. In addition, during the contraction of the footrest, when the obstacle is located below the footrest and within the two zero-gravity linkage mechanisms, the footrest collides with the obstacle. Since the footrest fixing seat is elastically connected to the third footrest rod via an elastic member, the footrest and the footrest fixing seat rotate outward relative to the third footrest rod, and stretch the elastic member to avoid forced rigid contraction and damage to the footrest and the obstacle, preventing the electric seat from being easily damaged. The anti-pinch component plays a good anti-pinch role, reduces the probability of accidents, and improves safety performance. The structural design of the electric seat is reasonable, can achieve a zero-gravity experience effect, has good comfort, and has good anti-pinch performance, reduces the probability of accidents, and improves safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0013] Figure 2 It is a side view of the zero-gravity linkage mechanism and chassis of the present invention.

[0014] Figure 3 Another side view of the zero-gravity linkage mechanism and chassis of the present invention.

[0015] Description of reference numerals:

[0016] Chassis--1, driver--2, guide rail--3, slider--4, transmission assembly--5, anti-pinch assembly--6, foot support plate fixing seat--61, elastic member--62, swing groove--63, limit column--64, second hanging ring--65, transmission rod--51, transmission plate--52, backrest group--7, cushion group--8, footrest group--9, hinge strip--11, backrest plate--71, first backrest rod--72, second backrest rod--73, third backrest rod--74, cushion plate--81, first cushion rod--82, second cushion rod- -83, the third cushion rod--84, the fourth cushion rod--85, the fifth cushion rod--86, the sixth cushion rod--87, the seventh cushion rod--88, the foot support plate connecting rod--91, the first foot support rod--92, the second foot support rod--93, the third foot support rod--94, the fourth foot support rod--95, the fifth foot support rod--96, the sixth foot support rod--97, the seventh foot support rod--98, the eighth foot support rod--99, the first connecting rod--75, the second connecting rod--910, the driving mechanism--911, the zero gravity linkage mechanism--912. DETAILED DESCRIPTION

[0017] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0018] like Figures 1 to 3As shown, a zero-gravity electric chair provided by the present invention comprises a chassis 1, a driving mechanism, a transmission assembly 5, an anti-pinch assembly 6 and a connecting rod device, wherein the transmission assembly 5 is movably arranged on the chassis 1, the main body of the driving mechanism 911 is installed on the chassis 1, the telescopic end of the driving mechanism 911 is driven and connected with the connecting rod device via the transmission assembly 5, the connecting rod device comprises two zero-gravity linkage mechanisms 912 respectively arranged on both sides of the chassis 1, the two zero-gravity linkage mechanisms 912 are symmetrically arranged, the zero-gravity linkage mechanism 912 comprises a seat back group 7, a cushion group 8 and a footrest group 9, both sides of the chassis 1 are provided with hinged strips 11, the seat back group 7 comprises a seat back plate 71, a first seat back rod 72, a second seat back rod 73 and a third seat back rod 74, one end of the first seat back rod 72 is connected to the hinged strip 1 1, the other end of the first seat back rod 72 is hinged to one end of the second seat back rod 73, the other end of the second seat back rod 73 is hinged to one end of the third seat back rod 74, the other end of the third seat back rod 74 is hinged to the bottom of the seat back plate 71, the cushion group 8 includes a cushion plate 81, a first cushion rod 82, a second cushion rod 83, a third cushion rod 84, a fourth cushion rod 85, a fifth cushion rod 86, a sixth cushion rod 87 and a seventh cushion rod 88, one end of the first cushion rod 82 is hinged to the hinge bar 11, the other end of the first cushion rod 82 is hinged to one end of the second cushion rod 83, the middle part of the first cushion rod 82 is hinged to one end of the third cushion rod 84, the other end of the second cushion rod 83 is hinged to the middle of the fourth cushion rod 85, the other end of the third cushion rod 84 is hinged to One end of the fifth cushion rod 86 is hinged, the middle part of the fifth cushion rod 86 is hinged to the middle part of the fourth cushion rod 85, one end of the fourth cushion rod 85 is hinged to the middle part of the seat back plate 71, the cushion plate 81 is installed on the top of the fourth cushion rod 85, the middle part of the second cushion rod 83 is hinged to one end of the sixth cushion rod 87, the other end of the sixth cushion rod 87 is hinged to the middle part of the second seat back rod 73, one end of the seventh cushion rod 88 is hinged to the other end of the fifth cushion rod 86, the foot support group 9 includes a foot support plate connecting rod 91, a first foot support rod 92, a second foot support rod 93, a third foot support rod 94, a fourth foot support rod 95, a fifth foot support rod 96, a sixth foot support rod 97, a seventh foot support rod 98 and an eighth foot support rod 99, one end of the first foot support rod 92 is hinged to the other end of the fourth cushion rod 85 The other end of the first foot support rod 92 is hinged to one end of the second foot support rod 93, the other end of the second foot support rod 93 is hinged to one end of the third foot support rod 94, the middle part of the third foot support rod 94 is hinged to one end of the fourth foot support rod 95, the other end of the fourth foot support rod 95 is hinged to one end of the foot support plate connecting rod 91, the middle part of the foot support plate connecting rod 91 is hinged to one end of the fifth foot support rod 96, the middle part of the fifth foot support rod 96 is hinged to the middle part of the first foot support rod 92, the other end of the fifth foot support rod 96 is hinged to one end of the sixth foot support rod 97, the other end of the sixth foot support rod 97 is hinged to the middle part of the fourth cushion rod 85, the other end of the seventh cushion rod 88 is hinged to the middle part of the sixth foot support rod 97, and one end of the seventh foot support rod 98 is hinged to the middle part of the sixth foot support rod 97.The other end of the seventh foot support rod 98 is hinged to one end of the eighth foot support rod 99, and the two output ends of the transmission assembly 5 respectively pass through the middle of the fourth cushion rod 85 of the two zero-gravity linkage mechanisms 912 and are connected to the other end of the eighth foot support rod 99. The anti-pinch assembly 6 includes a foot support plate fixing seat 61 and an elastic member 62, one end of the foot support plate fixing seat 61 is hinged to the other end of the third foot support rod 94, one end of the elastic member 62 is connected to the bottom of the third foot support rod 94, and the other end of the elastic member 62 is connected to the middle of the foot support plate fixing seat 61. The other end of the foot support plate fixing seat 61 extends toward the direction close to the foot support plate connecting rod 91, and the third foot support rod 94 and the foot support plate fixing seat 61 are in a folded state under the elastic force of the elastic member 62; specifically, the driving mechanism 911 can be a linear motor, or it can include a driver 2, a guide rail 3 and a slider 4, the guide rail 3 is arranged in the middle of the chassis 1, and the slider 4 is slidably arranged on the guide rail 3, the driver 2 is used to drive the slider 4 to slide back and forth on the guide rail 3, and the transmission assembly 5 is hinged to the two opposite outer walls of the slider 4.

[0019] In actual application, the back cushion is mounted on the two backrest boards 71 ​​of the backrest group 7, the seat cushion is mounted on the two cushion boards 81 of the cushion group 8, and the footrest board is mounted on the two footrest board fixing seats 61 of the footrest group 9. After the user sits on the electric chair, the telescopic end of the driving mechanism 911 extends to drive the transmission assembly 5 to move, and the two ends of the moving transmission assembly 5 respectively drive the two zero-gravity linkage mechanisms 912 to extend. Under the synchronous operation of the two zero-gravity linkage mechanisms 912, the two backrest boards 71 ​​are tilted backward and downward, the seat cushion board 81 is tilted forward and upward, and the footrest board connecting rod 91 and the footrest board fixing seat 61 are synchronously tilted forward and upward. The electric chair is in a zero-gravity state. Since the user's legs are raised slightly above the heart, the pressure on the spine and joints can be reduced, and the comfort is good. In addition, during the retraction of the footrest, when the obstacle is located below the footrest and within the two zero-gravity linkage mechanisms 912, the footrest collides with the obstacle. Since the footrest fixing seat 61 and the third footrest rod 94 are elastically connected via the elastic member 62, the footrest together with the footrest fixing seat 61 rotates outward relative to the third footrest rod 94 and stretches the elastic member 62 to avoid damage to the footrest and the obstacle due to forced rigid contraction, thereby preventing the electric seat from being easily damaged. The anti-pinch component 6 plays a good anti-pinch role, reduces the probability of accidents, and improves safety performance.

[0020] The electric seat has a reasonable structural design, can achieve a zero-gravity experience effect, has a good sense of comfort, and has excellent anti-pinch performance, which reduces the probability of accidents and improves safety performance.

[0021] In this embodiment, the transmission assembly 5 includes a transmission rod 51 and two transmission plates 52. The bottoms of the two transmission plates 52 are respectively hinged to the two opposite outer walls of the telescopic end (slider 4) of the driving mechanism 911, and the tops of the two transmission plates 52 are respectively hinged to the middle of the transmission rod 51. The length direction of the transmission rod 51 is perpendicular to the length direction of the guide rail 3. The two ends of the transmission rod 51 in the length direction respectively penetrate the middle of the fourth cushion rod 85 of the two zero-gravity linkage mechanisms 912 and are connected to the other end of the eighth foot support rod 99. When the telescopic end of the driving mechanism 911 is extended (the driver 2 drives the slider 4 to slide on the guide rail 3 toward the driver 2), the transmission rod 51 and the two transmission plates 52 Following the extension of the telescopic end of the driving mechanism 911 (the slider 4 moves in the direction of the driver 2), the transmission rod 51 drives the two zero-gravity linkage mechanisms 912 to extend when moving until the electric seat is in a zero-gravity state; when the electric seat needs to be restored to its initial normal seat state, the telescopic end of the driving mechanism 911 retracts (the driver 2 drives the slider 4 to slide on the guide rail 3 in the opposite direction of the driver 2), and the transmission rod 51 and the two transmission plates 52 follow the retraction of the telescopic end of the driving mechanism 911 (the slider 4 moves in the opposite direction of the driver 2) and reset. When resetting, the transmission rod 51 drives the two zero-gravity linkage mechanisms 912 to retract and reset.

[0022] In this embodiment, a first connecting rod 75 and a second connecting rod 910 are arranged between the two zero-gravity linkage mechanisms 912. The two ends of the first connecting rod 75 are respectively connected to the middle parts of the second seat back rod 73 of the two zero-gravity linkage mechanisms 912, and the two ends of the second connecting rod 910 are respectively connected to the other end of the footrest connecting rod 91 of the two zero-gravity linkage mechanisms 912. This structural design enables the two zero-gravity linkage mechanisms 912 to have good synchronous linkage, stable operation, high strength, and improved user experience.

[0023] In this embodiment, a swing groove 63 is provided at one end of the foot support plate fixing seat 61 away from the foot support plate connecting rod 91, and a limiting column 64 is provided at the other end of the third foot support rod 94. The limiting column 64 protrudes into the swing groove 63, and the swing groove 63 is in an arc shape. By providing the swing groove 63, it is convenient for the foot support plate to rotate with the foot support plate fixing seat 61 relative to the third foot support rod 94; the limiting column 64 limits the swing angle of the foot support plate fixing seat 61, thereby improving the swing stability of the foot support plate fixing seat 61.

[0024] In this embodiment, the elastic member 62 is a tension spring, which has a simple structure, good elasticity, long service life and low cost.

[0025] In this embodiment, a first hanging ring is provided in the middle of the foot support plate fixing seat 61, a second hanging ring 65 is provided at the bottom of the third foot support rod 94, one end of the elastic member 62 is hooked on the first hanging ring, and the other end of the elastic member 62 is hooked on the second hanging ring 65. This structural design facilitates the disassembly and maintenance of the elastic member 62, and the connection is firm and not easy to loosen.

[0026] All technical features in this embodiment can be freely combined according to actual needs.

[0027] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention may also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A zero-gravity electric chair, characterized in that: The invention comprises a chassis, a driving mechanism, a transmission assembly, an anti-pinch assembly and a connecting rod device, wherein the transmission assembly is movably arranged on the chassis, the main body of the driving mechanism is installed on the chassis, the telescopic end of the driving mechanism is driven and connected to the connecting rod device via the transmission assembly, the connecting rod device comprises two zero-gravity linkage mechanisms respectively arranged on both sides of the chassis, the zero-gravity linkage mechanism comprises a seat back group, a seat cushion group and a footrest group, both sides of the chassis are provided with hinged strips, the seat back group comprises a seat back board, a first seat back rod, a second seat back rod and a third seat back rod, one end of the first seat back rod is hinged to the hinged strip, the other end of the first seat back rod is hinged to one end of the second seat back rod, the other end of the second seat back rod is hinged to one end of the third seat back rod, the other end of the third seat back rod is hinged to the bottom of the seat back board, the seat cushion group comprises a seat cushion The seat back plate is mounted on the top of the fourth seat cushion rod, the middle part of the second seat cushion rod is hinged to one end of the sixth seat cushion rod, the other end of the sixth seat cushion rod is hinged to the middle of the second seat back rod, and one end of the seventh seat cushion rod is hinged to the fifth seat cushion rod. The other end of the cushion rod is hinged, and the foot support group includes a foot support plate connecting rod, a first foot support rod, a second foot support rod, a third foot support rod, a fourth foot support rod, a fifth foot support rod, a sixth foot support rod, a seventh foot support rod and an eighth foot support rod, one end of the first foot support rod is hinged to the other end of the fourth cushion rod, the other end of the first foot support rod is hinged to one end of the second foot support rod, the other end of the second foot support rod is hinged to one end of the third foot support rod, the middle part of the third foot support rod is hinged to one end of the fourth foot support rod, the other end of the fourth foot support rod is hinged to one end of the foot support plate connecting rod, the middle part of the foot support plate connecting rod is hinged to one end of the fifth foot support rod, the middle part of the fifth foot support rod is hinged to the middle part of the first foot support rod, the other end of the fifth foot support rod is hinged to one end of the sixth foot support rod, and the other end of the sixth foot support rod is hinged to the fourth The middle part of the seat cushion rod is hinged, the other end of the seventh seat cushion rod is hinged to the middle part of the sixth foot support rod, one end of the seventh foot support rod is hinged to the middle part of the sixth foot support rod, the other end of the seventh foot support rod is hinged to one end of the eighth foot support rod, the two output ends of the transmission assembly respectively pass through the middle part of the fourth seat cushion rod of the two zero-gravity linkage mechanisms and are connected to the other end of the eighth foot support rod, the anti-pinch assembly includes a foot support plate fixing seat and an elastic member, one end of the foot support plate fixing seat is hinged to the other end of the third foot support rod, one end of the elastic member is connected to the bottom of the third foot support rod, the other end of the elastic member is connected to the middle part of the foot support plate fixing seat, the other end of the foot support plate fixing seat extends in the direction close to the foot support plate connecting rod, and the third foot support rod and the foot support plate fixing seat are in a folded state under the elastic force of the elastic member;The transmission assembly includes a transmission rod and two transmission plates, the bottoms of the two transmission plates are respectively hinged to the two opposite outer walls of the telescopic end of the driving mechanism, the tops of the two transmission plates are respectively hinged to the middle of the transmission rod, the length direction of the transmission rod is perpendicular to the telescopic end of the driving mechanism, and the two ends of the transmission rod in the length direction respectively penetrate the middle of the fourth cushion rods of the two zero-gravity linkage mechanisms and are connected to the other end of the eighth foot support rod; A first connecting rod and a second connecting rod are arranged between the two zero gravity linkage mechanisms, the two ends of the first connecting rod are respectively connected to the middle parts of the second seat back rods of the two zero gravity linkage mechanisms, and the two ends of the second connecting rod are respectively connected to the other ends of the foot support plate connecting rods of the two zero gravity linkage mechanisms.

2. A zero-gravity electric chair according to claim 1, characterized in that: One end of the foot support plate fixing seat away from the foot support plate connecting rod is provided with a swing groove, and the other end of the third foot support rod is provided with a limit column, which protrudes into the swing groove, and the swing groove is in an arc shape.

3. The zero-gravity electric chair according to claim 1, characterized in that: The elastic member is a tension spring.

4. The zero-gravity electric chair according to claim 1, characterized in that: A first hanging ring is arranged in the middle of the foot support plate fixing seat, a second hanging ring is arranged at the bottom of the third foot support rod, one end of the elastic member is hooked on the first hanging ring, and the other end of the elastic member is hooked on the second hanging ring.

Images