CN215686101U

CN215686101U - An electric lift learning chair with seat back

Info

Publication number: CN215686101U
Application number: CN202121074464.9U
Authority: CN
Inventors: 林铭; 王献勇
Original assignee: Shandong GMYD Children Furniture Technology Co Ltd
Current assignee: Shandong GMYD Children Furniture Technology Co Ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2022-02-01
Anticipated expiration: 2031-05-19

Abstract

The utility model relates to the technical field of learning table and chair application, in particular to a chair with an electric lifting seat back. The chair comprises an electric lifting mechanism assembly, a chair seat assembly, a chair back assembly and a chair leg assembly, wherein the electric lifting mechanism assembly comprises a fixed pipe fixed on the chair leg assembly and a seat lifting pipe sleeved on the fixed pipe, the seat lifting pipe is arranged on the fixed pipe in a lifting mode, the chair seat assembly is fixed on the seat lifting pipe, a back lifting pipe is sleeved outside the seat lifting pipe, the back lifting pipe is sleeved on the seat lifting pipe in a lifting mode, and the chair back assembly is fixed on the back lifting pipe.

Description

Seat-back electric lifting learning chair

Technical Field

The utility model relates to the technical field of learning table and chair application, in particular to a chair with an electric lifting seat back.

Background

The body of children is constantly developed and grown up, too high and too low study chair produces unfavorable influence to children's body development, bow-backed myopia scheduling problem, the first thing of correct study position of sitting is that the both feet must, thigh and shank become the right angle or slightly be less than 90 degrees, the both feet are unsettled or step on the ground unrealistic, can fall on thigh and buttock with the focus completely, oppress the blood vessel, influence blood circulation, make children produce the discomfort, must not change the posture constantly, can't keep correct position of sitting, simultaneously easy fatigue, influence the spirit and concentrate.

In order to meet the requirements of healthy learning of children, children study tables and chairs designed by people, the existing children study chair and posture correction chair can only meet the functions of a seat generally, the seat height is adjusted, and the improvement of the comfort level of a chair back is one of the necessary functions of the seat; at present, most of the seat height and back height adjusting modes for children learning chairs and posture correcting chairs in the industry are that a seat back and a chair frame are clamped by screws or outside, so that great effort is required, and although a hand-operated lifting seat height adjusting mode is sold in the market, the back lifting seat height adjusting mode still needs the outside clamping mode; these methods cannot adjust the height of children in the younger age group independently and manually.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problems existing in the adjustment of the child chair, the utility model provides the electric lifting learning chair which is reasonable in design, compact in structure and capable of facilitating the children of smaller age to control the seat back.

In order to achieve the above object, the utility model provides a seat and back electric lifting learning chair, which comprises an electric lifting mechanism assembly, a seat assembly, a chair back assembly and a chair leg assembly, wherein the electric lifting mechanism assembly comprises a fixed tube fixed on the chair leg assembly and a seat lifting tube sleeved on the fixed tube, the seat lifting tube is arranged on the fixed tube in a lifting manner, the seat assembly is fixed on the seat lifting tube, a back lifting tube is sleeved outside the seat lifting tube, the back lifting tube is sleeved on the seat lifting tube in a lifting manner, the chair back assembly is fixed on the back lifting tube, a first lifting nut is arranged in the fixed tube, a first screw rod is sleeved in the first lifting nut, a first motor is arranged at the top of the first screw rod, a lifting tube handle is arranged at the top of the seat lifting tube, the first motor is fixed in the elevator tube handle, be provided with the second lifting nut in the seat elevator tube, the second lead screw is equipped with to second lifting nut endotheca, the second lead screw suit is outside first lead screw, the top of second lead screw is connected with the second motor, the second motor is cavity formula speed reduction direct current motor, second motor and back elevator tube fixed connection.

Preferably, a nut pipe is arranged in the fixed pipe, and the first lifting nut is fixed to the upper end of the fixed pipe through the nut pipe.

Preferably, the chair leg assembly is provided with a groove for placing the fixing pipe, the bottom of the groove is provided with a bolt hole, and the fixing pipe is fixed on the chair leg assembly through a bolt.

Preferably, a connecting ring is arranged at the back of the chair back assembly, and the chair back assembly is fastened above the back lifting pipe in a sleeved mode through the connecting ring.

Preferably, the bottom end of the seat part lifting pipe is provided with a transverse connecting arm, and the connecting arm is in fastening connection with a bolt at the bottom of the seat part assembly.

Preferably, the seat elevator tube is detachably, fixedly and fixedly connected with the elevator tube handle.

Preferably, the seat portion elevator tube upper end sets up the transverse connection hole, the bottom of elevator tube handle is provided with the elasticity projection with connecting hole matched with, can dismantle the fastening and fixedly connect through the grafting realization of elasticity projection and transverse connection hole between seat portion elevator tube and the elevator tube handle.

Preferably, the electric lifting mechanism assembly further comprises a direct current power supply set, a control electronic board, a remote controller and a distance measuring switch set, wherein the direct current power supply set, the control electronic board, the remote controller and the distance measuring switch set are installed at the bottom of the chair leg assembly.

Preferably, the distance measurement switch group includes at least one of an obstacle avoidance sensor, a distance switch, and a push button switch.

Preferably, the distance measuring switch comprises a first obstacle avoidance sensor for measuring ascending of the back lifting pipe, a second obstacle avoidance sensor for measuring descending of the back lifting pipe, a third obstacle avoidance sensor for measuring ascending of the seat lifting pipe and a fourth obstacle avoidance sensor for measuring descending of the seat lifting pipe.

Compared with the prior art, the utility model has the advantages and positive effects that,

1. the utility model provides a seat-back electric lifting learning chair, which effectively realizes synchronous adjustment or independent adjustment of a seat assembly and a seat back assembly through improvement of an electric lifting mechanism assembly, is more suitable for children of small age groups to use, and has economic and social benefits.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

Fig. 1 is a schematic structural view of a seat back electric lifting learning chair provided in embodiment 1;

fig. 2 is a schematic structural view of the electric lift mechanism assembly provided in embodiment 1;

FIG. 3 is a schematic view of the motorized lift mechanism assembly of embodiment 1 with the back elevator tube removed;

fig. 4 is a partial structural schematic view of the electric lift mechanism assembly provided in embodiment 1;

fig. 5 is a schematic structural view of the elevator tube handle provided in example 1;

fig. 6 is a schematic structural diagram of a first lead screw provided in embodiment 1;

fig. 7 is a schematic structural view of a second lead screw provided in embodiment 1;

in the above figures, 1, a seat assembly; 2. a seat back assembly; 21. a connecting ring; 3. a chair leg assembly; 31. a groove; 4. an electric lifting mechanism assembly; 41. a fixed tube; 411. a nut tube; 42. a seat elevator tube; 421. a transverse connecting arm; 422. a transverse connecting hole; 43. a back lifting pipe; 44. a riser handle; 441. an elastic convex column; 45. a first lifting nut; 46. a first lead screw; 47. a first motor; 48. a second lifting nut; 49. a second lead screw; 491. a second motor.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.

Embodiment 1, as shown in fig. 1 to 7, this embodiment aims to solve the technical problem that it is inconvenient for a young child to adjust the seat and backrest of the existing child learning chair, and therefore, it is most convenient to change the lifting of the chair into electric lifting, and considering the size of the seat, in order to avoid the volume of the lifting mechanism being too large, this embodiment is proposed in particular, in order to achieve the above-mentioned purpose, the seat back electric lifting learning chair provided in this embodiment includes an electric lifting mechanism assembly 4, a seat assembly 1, a seat back assembly 2, and a seat leg assembly 3, in this embodiment, the seat assembly 1, the seat back assembly 2, and the seat leg assembly 3 are all the existing structures, in this embodiment, the structure is not improved, the electric lifting mechanism assembly 4 mainly improved in this embodiment includes a fixed pipe 41 fixed on the seat leg assembly 3 and a seat lifting pipe 42 sleeved on the fixed pipe 41, in the present embodiment, the groove 31 is provided in the leg unit 3, the fixing tube 41 is inserted into the groove 31, the bolt hole is provided in the bottom of the groove 31, the connection between the electric lifting mechanism unit 4 and the leg unit 3 is realized by the connection between the bolt and the fixing tube 41, and the seat lifting tube 42 is mainly used to realize the lifting of the seat unit 1 as the name suggests, and for this purpose, the seat lifting tube 42 is lifted and lowered on the fixing tube 41 and the seat unit is fixed on the seat lifting tube 42. Specifically, the bottom end of the seat lifting tube 42 is provided with a transverse connecting arm 421, which is fastened to the bottom bolt of the seat assembly 1.

In order to realize the lifting of the chair back assembly 2, a back lifting pipe 43 is sleeved outside the seat lifting pipe 42, the back lifting pipe 43 is sleeved on the seat lifting pipe 42 in a lifting way, the chair back assembly 2 is fixed on the back lifting pipe 43, specifically, a connecting ring 21 is arranged at the back of the chair back assembly 2, and the chair back assembly 2 is sleeved and fastened above the back lifting pipe 43 through the connecting ring 21 in consideration of the travel distance of the chair back assembly 2. Thus, the movement distance of the seatback assembly 2 can be ensured.

Thus, the lifting of the seat back assembly 2 can be realized, and the height adjustment of the seat back assembly 2 can be completed.

In order to realize electric control, make the whole structure more compact, avoid the volume from becoming larger, and keep the volume of the existing lifting mechanism of the study chair, for this reason, the first lifting nut 45 is arranged in the fixed tube 41, the first lead screw 46 is sleeved in the first lifting nut 45, the first lifting nut 45 is fixed in the fixed tube 41, in order to make a part of the first lead screw 46 can extend into the fixed tube 41, for this reason, the first lifting nut 45 is arranged near the upper part of the fixed tube 41, the first motor 47 is arranged on the top of the first lead screw 46, so that under the driving of the first motor 47, the position of the first lead screw 46 relative to the first lifting nut 45 changes, for this reason, only the first motor 47 needs to be fixed on the seat lifting tube 42, the lifting of the seat lifting tube 42 on the fixed tube 41 can be realized, in order to facilitate the installation, be provided with the elevator tube handle 44 at the top of seat elevator tube 42, be provided with the motor cabinet in elevator tube handle 44, first motor 47 is fixed in elevator tube handle 44, seat elevator tube 42 upper end sets up transverse connection hole 422, elevator tube handle 44's bottom is provided with the elasticity projection 441 with connecting hole matched with, can dismantle the fastening and link firmly through the grafting realization of elasticity projection 441 with transverse connection hole 422 between seat elevator tube 42 and the elevator tube handle 44, and like this, setting through elevator tube handle 44 has realized the regulation of seat elevator tube 42's height.

In order to realize that the back lifting pipe 43 is sleeved on the seat lifting pipe 42 in a lifting way, a partition plate is arranged at the upper part in the seat lifting pipe 42, a second lifting nut 48 is arranged on the partition plate, a second screw rod 49 is sleeved in the second lifting nut 48, the second screw rod 49 is a hollow rod, in this way, the second screw rod 49 is sleeved outside the first screw rod 46, the top of the second screw rod 49 is connected with a second motor 491, and the second motor 491 is a hollow deceleration direct current motor, so that the structure that the first screw rod 46 penetrates through the second motor 491 is met, and the second motor 491 is fixedly connected with the back lifting pipe 43. In this way, the height adjustment of the seat back assembly 2 is achieved by the second motor 491.

In order to fix the fixing tube 41 and the first lifting nut 45 conveniently, a nut tube 411 is arranged in the fixing tube 41, the first lifting nut 45 is fixed at the upper end of the fixing tube 41 through the nut tube 411, a threaded hole is formed in the bottom of the nut tube 411, and the fixing of the fixing tube 41 is achieved through connection with a bolt.

In order to realize intelligent control, the electric lifting mechanism assembly 4 further comprises a direct current power supply set, a control electronic board, a remote controller and a distance measuring switch set which are arranged at the bottom of the chair leg assembly 3. The dc power supply set is mainly used for supplying power to the first motor 47 and the second motor 491, the control electronic board is mainly used for realizing related control, the remote controller has the same wireless communication protocol with the control electronic board to realize the control of the first motor 47 and the second motor 491, and the remote controller at least comprises three switch buttons of back lifting, seat lifting and seat back lifting so as to facilitate the operation of the infant.

The distance measuring switch group mainly aims to realize the limitation of the maximum distance, and comprises at least one of an obstacle avoidance sensor, a distance switch and a button switch. In this embodiment, the range switch includes that the measurement back fall way goes upward first keeps away the barrier sensor, the measurement back fall way descending second keeps away the barrier sensor, the measurement seat fall way upward third keeps away the barrier sensor and the measurement seat fall way descending fourth keeps away the barrier sensor. In this way, the limitation of the maximum moving distance is realized by the arrangement of the obstacle avoidance sensor, and the control of the motor and the use of the obstacle avoidance sensor belong to the existing mature technology, so detailed description is omitted in this embodiment.

The lifting working principle is detailed as follows:

the principle of the guiding lifting operation is that when a seat lifting key on a remote controller is operated, a first motor 47 obtains a power supply such as a positive power supply, an output shaft of the motor rotates to drive a first screw rod 46 to rotate in the positive direction, the first screw rod 46 spirally rises around a first lifting nut 45, the first lifting nut 45 is fixedly arranged on a fixed tube 41 in a screwing mode, a connecting hole in the upper end of a seat lifting tube 42 is tightly buckled with an elastic convex column 441 at the lower end of a lifting tube handle 44, and when the lifting tube handle 44 is pushed to rise by the first screw rod 46, the seat lifting tube 42 is dragged to synchronously rise, so that the seat height of the seat is lifted. Similarly, when the first motor 47 obtains a negative power supply, the first lead screw 46 is driven to rotate reversely, and the lifting tube handle 44 lowers the thrust to lower the seat lifting tube 42, so as to lower the seat height.

When the chair back lifting key on the remote controller is operated, the second motor 491 obtains a power supply like a positive power supply, because the second screw 49 is a hollow tube, the second screw coaxially penetrates through the outer side of the first screw 46, simultaneously penetrates through the second motor 491, and is fixedly connected with the second motor 491 at the upper end of the second screw 49; the rotation of the output shaft of the motor drives the second lead screw 49 to rotate along with the positive direction, the second lead screw 49 spirally rises around the second lifting nut 48, and the second lifting nut 48 is arranged in the seat lifting pipe 42; the pushing force of the screw rod drives the back lifting pipe 43 to rise, so that the chair back assembly 2 is driven to rise; similarly, when the second motor 491 obtains the negative power supply, the motor output shaft rotates to drive the second lead screw 49 to rotate reversely, and the reverse thrust makes the back lifting pipe 43 drive the chair back assembly 2 to descend.

The synchronous lifting principle is that when a synchronous lifting key on the remote controller is operated, the first motor 47 and the second motor 491 obtain power simultaneously, for example, when the power is positive, the first motor 47 drives the first screw rod 46 to rotate positively, when the lifting pipe handle 44 is pushed by the first screw rod 46 to lift, the lifting pipe 42 of the seat part is dragged to lift synchronously, and the seat height of the seat is lifted. Meanwhile, the output shaft of the second motor 491 rotates to drive the second screw rod 49 to rotate along with the positive direction, the second screw rod 49 spirally rises around the second lifting nut 48, the pushing force of the screw rod drives the back lifting pipe 43 to rise, and the back assembly 2 is driven to rise;

similarly, when the synchronous lifting key on the remote controller is operated, the first motor 47 and the second motor 491 obtain the negative power supply at the same time, and the first motor 47 drives the first lead screw 46 to rotate reversely, so that the lifting pipe handle 44 lowers the thrust to lower the seat lifting pipe 42, thereby lowering the seat height. Meanwhile, when the second motor 491 obtains a negative power supply, the motor output shaft rotates to drive the second lead screw 49 to rotate reversely, and the reverse thrust enables the back lifting pipe 43 to drive the chair back assembly 2 to descend.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.

Claims

1. A seat-back electric lifting learning chair, comprising an electric lifting mechanism assembly, a seat seat assembly, a seat back assembly and a chair foot assembly, wherein the electric lifting mechanism assembly comprises a A fixed tube on the upper part and a seat lift tube sleeved on the fixed tube, the seat lift tube is raised and lowered on the fixed tube, the seat assembly is fixed on the seat lift tube, and the seat lift tube is outside the seat lift tube. The back lift pipe is sheathed, the back lift pipe is mounted on the seat lift pipe, the seat back assembly is fixed on the back lift pipe, the fixed pipe is provided with a first lift nut, and the first lift nut is inside A first screw rod is sheathed, the top of the first screw rod is provided with a first motor, the top of the seat lift pipe is provided with a lift pipe handle, the first motor is fixed in the lift pipe handle, the seat A second lifting nut is arranged in the upper lifting pipe, a second screw rod is sleeved inside the second lifting nut, the second screw rod is sleeved outside the first screw rod, and the top of the second screw rod is connected with a second screw rod. A motor, the second motor is a hollow-type decelerated DC motor, and the second motor is fixedly connected to the back lift pipe.

2 . The electric lifting learning chair with seat back according to claim 1 , wherein a nut tube is arranged in the fixing tube, and the first lifting nut is fixed on the upper end of the fixing tube through the nut tube. 3 .

3 . An electric lift learning chair with seat back according to claim 2 , wherein a groove for placing a fixing pipe is provided on the seat leg assembly, and a bolt hole is provided at the bottom of the groove, 3 . The fixing tube is fixed on the chair foot assembly by bolts.

4 . The electric seat-back lift learning chair according to claim 3 , wherein a connecting ring is arranged behind the seat back assembly, and the seat back assembly is fastened above the back lift pipe through a sleeve of the connecting ring. 5 . .

5 . The electric lift learning chair with seat back according to claim 4 , wherein a transverse connecting arm is provided at the bottom end of the seat lift pipe, and the connecting arm is bolted to the bottom of the seat assembly. 6 .

6 . The electric seat-back lift learning chair according to claim 5 , wherein the seat lift tube and the lift tube handle are detachably and firmly connected. 7 .

7 . The seat-back electric lift learning chair according to claim 6 , wherein a transverse connection hole is arranged at the upper end of the seat lift tube, and an elastic force matched with the connection hole is arranged at the bottom of the lift tube handle. 8 . A protruding post, the seat lift tube and the lift tube handle are detachably fastened and connected through the insertion of the elastic protruding post and the transverse connection hole.

8 . An electric seat-back lift learning chair according to claim 1 , wherein the electric lift mechanism assembly further comprises a DC power supply group, a control electronic board, remote control and ranging switch group.

9 . The electric seat-back lift learning chair according to claim 8 , wherein the distance measuring switch group comprises at least one of an obstacle avoidance sensor, a distance switch, and a button switch. 10 .

10 . The seat-back electric lift learning chair according to claim 8 , wherein the distance-measuring switch comprises a first obstacle avoidance sensor for measuring the upward movement of the back lift tube and a second obstacle avoidance sensor for measuring the downward movement of the back lift tube. 11 . , a third obstacle avoidance sensor on the ascending pipe of the measuring seat, and a fourth obstacle avoidance sensor on the descending pipe of the measuring seat.