CN214964032U - Seat back lifting mechanism and learning chair - Google Patents
Seat back lifting mechanism and learning chair Download PDFInfo
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- CN214964032U CN214964032U CN202121236786.9U CN202121236786U CN214964032U CN 214964032 U CN214964032 U CN 214964032U CN 202121236786 U CN202121236786 U CN 202121236786U CN 214964032 U CN214964032 U CN 214964032U
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- seat
- screw rod
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- lifting sleeve
- rotating handle
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Abstract
The utility model relates to a healthy household articles technical field of children, specifically speaking relates to a seat back of body elevating system and study chair. The multifunctional chair comprises a fixed tube, a chair seat lifting sleeve, a chair back lifting sleeve, a first screw rod, a second screw rod, a first rotating handle for driving the first screw rod and a second rotating handle for driving the second screw rod. The utility model discloses a seat back of body elevating system can realize carrying out synchronous or asynchronous lift adjustment to seat support, the back of the chair, and the regulation operation of the back of the chair, seat support height can independently be accomplished to low age group children, and the study chair that is equipped with seat back elevating system more is fit for low age group children and uses, has good economic benefits and social.
Description
Technical Field
The utility model relates to a healthy household articles technical field of children, specifically speaking relates to a seat back of body elevating system and study chair.
Background
In the field of children's home learning articles, the existing children's learning chair and posture correcting chair can only meet the functions of a seat generally, and the adjustment of the height of the seat and the improvement of the comfort level of the chair back are one of the necessary functions of the seat.
In the field of the industry, the height adjustment of the chair seats and the chair backs of most child learning chairs and posture correcting chairs on the chair frame is operated in a screw or elastic clamping mode, and is relatively laborious. At present, the chair seat height is adjusted in the market in a hand-cranking lifting mode, but the chair back height is still adjusted in an external clamping mode. The height adjustment operation of the seat and the chair back of the existing study chair and posture correction chair is laborious, and children at low age cannot independently and manually complete the height adjustment operation. How to enable children of low age to independently adjust the heights of the chair seat and the chair back is a problem to be solved urgently in the field.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a seat back of body elevating system, solve above technical problem.
In order to achieve the above object, the utility model adopts the following technical scheme:
a seat back lifting mechanism is characterized in that: the chair comprises a fixed tube, a chair seat lifting sleeve, a chair back lifting sleeve, a first screw rod, a second screw rod, a first rotating handle for driving the first screw rod and a second rotating handle for driving the second screw rod; a first guide sleeve is inserted and assembled in the bottom port of the seat lifting sleeve, and the upper end of the fixed pipe is inserted and assembled in the first guide sleeve; a second guide sleeve is spliced and assembled in the bottom port of the chair back lifting sleeve, and the upper end of the chair seat lifting sleeve is spliced in the second guide sleeve; the second screw rod is hollow, axially penetrates through the chair back lifting sleeve and is assembled in the chair back lifting sleeve through a bearing; the upper end of the second screw rod is connected with a second rotating handle, and the lower end of the second screw rod is in threaded connection with the upper end of the seat lifting sleeve; the first screw rod sequentially penetrates through the central cavity of the second screw rod and the seat lifting sleeve and is assembled in the seat lifting sleeve through a bearing; the top of first lead screw passes the second and rotates the handle, is connected with first rotation handle, and the lower extreme meets with the upper end screw thread of fixed pipe.
Further, the following steps: the first rotating handle is positioned above the second rotating handle; the first rotating handle comprises a rotating handle and a mounting seat, a first polygonal insertion hole is formed in the center of the mounting seat, and L-shaped pins are symmetrically arranged below the first polygonal insertion hole; the top end of the first screw rod is provided with a polygonal-prism-shaped inserting column matched with the first polygonal inserting hole, and the inserting column is inserted into the first polygonal inserting hole;
the second rotating handle is of a wheel-shaped structure and comprises a rotating wheel, a cylindrical seat positioned in the center of the rotating wheel and a plurality of short rods connected between the rotating wheel and the cylindrical seat; the top of the cylindrical seat is provided with a strip jack matched with the L-shaped pin, and the bottom of the cylindrical seat is provided with a second polygonal jack; and a polygonal plug matched with the second polygonal jack is arranged at the top end of the second screw rod and is inserted in the second polygonal jack.
And further: the first screw rod comprises a threaded section, a smooth cylindrical section, a polygonal prism-shaped insert column and a cylindrical short column; the thread section is in threaded connection with a first nut fixed in the top opening of the fixed pipe; an upper clamping groove and a lower clamping groove are arranged at the connecting part of the cylindrical section and the bearing in the seat lifting sleeve, and clamping rings are respectively assembled in the two clamping grooves; and a spring is arranged between the top end of the short column and the mounting seat.
And further: an upper clamping groove and a lower clamping groove are arranged at the connecting part of the second screw rod and a bearing in the chair back lifting sleeve, and clamping rings are respectively assembled in the two clamping grooves; the lower end of the second screw rod is connected with a second nut fixed in the top opening of the seat lifting sleeve in a threaded manner.
The second purpose of the utility model is to provide a learning chair, the technical scheme who adopts is:
the utility model provides a learning chair, includes chair foot assembly, seat support assembly and back of the chair assembly, its characterized in that: the seat back lifting mechanism is also included; the bottom end of the fixed pipe is fixedly assembled in a central concave hole of the chair leg assembly; a transverse connecting arm is fixed on the outer wall of the lower end of the seat lifting sleeve; the seat assembly is fixedly assembled on the transverse connecting arm; and a connecting ferrule is fixed at the back of the chair back assembly, is sleeved on the chair back lifting sleeve and is locked and fixed through a fastening bolt.
Has the advantages that: compared with the prior art, the utility model discloses a seat back of body elevating system can realize carrying out synchronous or asynchronous lift adjustment to seat support, the back of the chair, and the regulation operation of the back of the chair, seat support height can independently be accomplished to low age group children, and the study chair that is equipped with seat back elevating system more is fit for low age group children and uses, has good economic benefits and social.
Drawings
Fig. 1 is a schematic structural view of a seat back lifting mechanism of the present invention;
fig. 2 is an exploded view of the seat back lifting mechanism of the present invention;
fig. 3 is a schematic bottom structure view of the first rotating handle of the present invention;
fig. 4 is a schematic perspective view of the first rotating handle of the present invention;
fig. 5 is a schematic structural view (one) of the second rotating handle of the present invention;
fig. 6 is a schematic structural view (ii) of the second rotating handle of the present invention;
fig. 7 is a schematic structural diagram of the first lead screw of the present invention;
fig. 8 is a schematic structural view of the second lead screw of the present invention;
fig. 9 is a schematic diagram of the mechanism of the chair of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
Example 1: seat back lifting mechanism
Referring to fig. 1-2, the seat back lifting mechanism according to this embodiment includes a fixed tube 7, a seat lifting sleeve 5, a seat back lifting sleeve 3, a first lead screw 14, a second lead screw 13, a first rotating handle 1 for driving the first lead screw 14, and a second rotating handle 2 for driving the second lead screw 13.
The bottom port of the seat lifting sleeve 5 is internally provided with a first guide sleeve 6 in an inserting manner, the upper end of the fixed pipe 7 is inserted in the first guide sleeve 6, and the top port of the fixed pipe is internally provided with a first nut 15 in a fixed manner. The bottom port of the chair back lifting sleeve 3 is internally spliced and assembled with a second guide sleeve 4, the upper end of the chair seat lifting sleeve 5 is spliced in the second guide sleeve 4, and a second nut 12 is fixedly assembled in the top port of the chair seat lifting sleeve.
As shown in fig. 8, the second lead screw 13 is hollow inside, axially penetrates through the seat back lifting sleeve 3, and is assembled in the seat back lifting sleeve 3 through a bearing 11. An upper clamping groove and a lower clamping groove are formed in the positions, connected with the bearings 11 in the chair back lifting sleeve 3, of the second screw rod 13, clamping rings 10 are assembled in the two clamping grooves respectively, and therefore the chair back lifting sleeve 3 can lift along with the rotation of the second screw rod 13.
As shown in fig. 5 and 6, the second rotating handle 2 is a wheel-shaped structure, and includes a rotating wheel 2A, a cylindrical seat 2B located at the center of the rotating wheel 2A, and a plurality of short rods 2C connected between the rotating wheel 2A and the cylindrical seat 2B; and a second polygonal insertion hole 2D is formed in the bottom of the cylindrical seat 2B. The top end of the second screw rod 13 is provided with a polygonal plug 13A matched with the second polygonal jack 2D, and the plug 13A is inserted in the second polygonal jack 2D. The lower end of the second screw rod 13 is connected with a second nut 12 fixed in the upper port of the seat lifting sleeve 5 in a threaded manner.
As shown in fig. 3 and 4, the first turning handle 1 includes a turning handle and a mounting seat, and a first polygonal insertion hole 1A is formed in the center of the mounting seat; l-shaped pins 1B are symmetrically arranged below the first polygonal insertion holes 1A, and strip-shaped insertion holes 2E matched with the L-shaped pins 1B are formed in the tops of the cylindrical bases 2B.
As shown in fig. 7, the first lead screw 14 includes a threaded section 14A, a smooth cylindrical section 14B, a polygonal-prism-shaped socket post 14C matching the first polygonal socket 1A, and a cylindrical post 14D. The first screw 14 passes through the central cavity 13B of the second screw 13 and the seat lifting sleeve 5 in sequence, and the cylindrical section 14B is assembled in the seat lifting sleeve 5 through a bearing (the same as the bearing 11). An upper clamping groove and a lower clamping groove (not shown in the figure) are formed in the positions, connected with bearings in the seat lifting sleeve 5, of the cylindrical section 14B, clamping rings (not shown in the figure and identical with the clamping rings 10) are respectively assembled in the two clamping grooves, and therefore the seat lifting sleeve 5 can lift along with the rotation of the first screw rod 14. The threaded section 14A is in threaded connection with a first nut 15 fixed in the top opening of the fixed pipe 7; the top end of the first screw rod 14 upwards passes through the second rotating handle 2, and the inserting column 14C is inserted in the first polygonal inserting hole 1A.
The upper place is equipped with the cylindricality hole with short column 14D assorted in the first polygon jack 1A of mount pad, is provided with cylindricality spring 9 in the cylindricality hole, and short column 14D pegs graft and touches and compress spring 9 in the downthehole top of cylindricality to guarantee to have a small stroke that reciprocates between the top of first rotating handle 1 and first lead screw 14.
First rotating handle 1 is located the top of second rotating handle 2, both can stack in the top of second rotating handle 2, also can insert the cooperation lock assembly at the top of second rotating handle 2 of foot and rectangular jack 2E through L-shaped. The buckling assembly operation of the first rotating handle 1 and the second rotating handle 2 is as follows: when the first rotating handle 1 is pressed downwards, the spring 9 is compressed, the L-shaped pin 1B of the first rotating handle 1 is inserted into the strip-shaped insertion hole 2E at the top of the second rotating handle 2, then the first rotating handle 1 is rotated, and the L-shaped pin 1B is tightly buckled at the top of the rotating handle 2 under the action of the elastic force of the spring 9.
Example 2: learning chair
As shown in fig. 9, the learning chair of the present embodiment includes a chair leg assembly 16, a chair seat assembly 17, a chair back assembly 18, and the chair back lifting mechanism. The bottom end of the fixed tube 7 is fixedly assembled in a central concave hole of the chair leg assembly 16; a transverse connecting arm 8 is fixed on the outer wall of the lower end of the seat lifting sleeve 5; the seat assembly 17 is fixedly assembled on the transverse connecting arm 8; and a connecting ferrule 19 is fixed at the back of the chair back assembly 18, and the connecting ferrule 19 is sleeved on the chair back lifting sleeve 3 and is locked and fixed through a fastening bolt 20.
Seat back of the body elevating system can realize carrying out synchronous or asynchronous lift adjustment, specifically speaking to seat support, the back of the chair:
1. lifting by guiding
The first rotating handle 1 is positioned above the second rotating handle 2 and is in a pull-up and stacking state.
When the first rotating handle 1 rotates, the first screw rod 14 spirally rises or falls around the first nut 15, because the first nut 15 is screwed on the fixed pipe, the first screw rod 14 is clamped by the clamping rings distributed on the upper and lower surfaces of the bearing, therefore, when the first screw rod 14 rises or falls, the seat lifting sleeve 5 is driven to rise or fall, and the seat assembly 17 is driven to rise or fall.
Similarly, the top end of the second lead screw 13 is connected with the second rotating handle 2, when the second rotating handle 2 is rotated, the second lead screw 13 rotates, the second lead screw 13 spirally rises or falls around the second nut 12, because the second nut 12 is fixed on the seat lifting sleeve 5, the second lead screw 13 is clamped by the snap rings 10 distributed on the upper and lower surfaces of the bearing 11, therefore, when the second lead screw 13 rises or falls, the seat lifting sleeve 3 is driven to rise or fall, and then the seat assembly 18 is driven to rise or fall.
2. Synchronous lifting
When the second rotating handle 2 is rotated, the second screw rod 13 rotates along with the second rotating handle, and meanwhile, the first rotating handle 1 also rotates synchronously; when the second rotating handle 2 is rotated, the second screw rod 13 spirally rises or falls around the second nut 12, and the second screw rod 13 rises or falls the chair back lifting sleeve 3, so as to drive the chair back assembly 18 to rise or fall.
Meanwhile, the first rotating handle 1 rotates along with the second rotating handle 2, the first lead screw 14 rotates, the first lead screw 14 spirally rises or falls around the first nut 15, and the seat lifting sleeve 5 is driven to rise or fall, so that the seat assembly 17 is driven to rise or fall.
The foregoing shows and describes the basic principles, features and technical effects of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the claims and their equivalents.
Claims (5)
1. A seat back lifting mechanism is characterized in that: comprises a fixed tube (7), a chair seat lifting sleeve (5), a chair back lifting sleeve (3), a first screw rod (14), a second screw rod (13), a first rotating handle (1) for driving the first screw rod (14) and a second rotating handle (2) for driving the second screw rod (13); a first guide sleeve (6) is inserted and assembled in the bottom port of the seat lifting sleeve (5), and the upper end of the fixed pipe (7) is inserted and assembled in the first guide sleeve (6); a second guide sleeve (4) is spliced and assembled in the bottom port of the chair back lifting sleeve (3), and the upper end of the chair seat lifting sleeve (5) is spliced in the second guide sleeve (4); the second screw rod (13) is hollow, axially penetrates through the chair back lifting sleeve (3), and is assembled in the chair back lifting sleeve (3) through a bearing; the upper end of the second screw rod (13) is connected with the second rotating handle (2), and the lower end of the second screw rod is in threaded connection with the upper end of the seat lifting sleeve (5); the first screw rod (14) sequentially penetrates through the central cavity (13B) of the second screw rod (13) and the seat lifting sleeve (5) and is assembled in the seat lifting sleeve (5) through a bearing; the top end of the first screw rod (14) penetrates through the second rotating handle (2) to be connected with the first rotating handle (1), and the lower end of the first screw rod is connected with the upper end of the fixed pipe (7) in a threaded mode.
2. The seat back lifting mechanism of claim 1, wherein: the first rotating handle (1) is positioned above the second rotating handle (2); the first rotating handle (1) comprises a rotating handle and a mounting seat, a first polygonal insertion hole (1A) is formed in the center of the mounting seat, and L-shaped insertion pins (1B) are symmetrically arranged below the first polygonal insertion hole (1A); the top end of the first screw rod (14) is provided with a polygonal inserting column (14C) matched with the first polygonal inserting hole (1A), and the inserting column (14C) is inserted into the first polygonal inserting hole (1A);
the second rotating handle (2) is of a wheel-shaped structure and comprises a rotating wheel (2A), a cylindrical seat (2B) positioned at the center of the rotating wheel (2A) and a plurality of short rods (2C) connected between the rotating wheel (2A) and the cylindrical seat (2B); the top of the cylindrical seat (2B) is provided with a strip jack (2E) matched with the L-shaped pin (1B), and the bottom is provided with a second polygonal jack (2D); the top end of the second screw rod (13) is provided with a polygonal plug (13A) matched with the second polygonal jack (2D), and the plug (13A) is inserted into the second polygonal jack (2D).
3. The seat back lifting mechanism of claim 2, wherein: the first screw rod (14) comprises a threaded section (14A), a smooth cylindrical section (14B), a polygonal prism-shaped insert column (14C) and a cylindrical short column (14D); wherein, the thread section (14A) is connected with a first nut (15) fixed in the top opening of the fixed pipe (7) in a thread way; an upper clamping groove and a lower clamping groove are arranged at the positions where the cylindrical sections (14B) are connected with bearings in the seat lifting sleeve (5), and clamping rings are respectively assembled in the two clamping grooves; a spring (9) is arranged between the top end of the short column (14D) and the mounting seat.
4. A seat back lifting mechanism according to claim 2 or 3, wherein: an upper clamping groove and a lower clamping groove are arranged at the connecting part of the second screw rod (13) and the bearing (11) in the chair back lifting sleeve (3), and clamping rings (10) are respectively assembled in the two clamping grooves; the lower end of the second screw rod (13) is connected with a second nut (12) fixed in the top opening of the seat lifting sleeve (5) in a threaded manner.
5. A learning chair, includes chair foot assembly (16), seat support assembly (17) and back of the chair assembly (18), its characterized in that: further comprising a seat back lift mechanism as recited in claim 1; the bottom end of the fixed pipe (7) is fixedly assembled in a central concave hole of the chair leg assembly (16); a transverse connecting arm (8) is fixed on the outer wall of the lower end of the seat lifting sleeve (5); the seat assembly (17) is fixedly assembled on the transverse connecting arm (8); the back of the chair back assembly (18) is fixed with a connecting ferrule (19), and the connecting ferrule (19) is sleeved on the chair back lifting sleeve (3) and is locked and fixed through a fastening bolt (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121236786.9U CN214964032U (en) | 2021-06-03 | 2021-06-03 | Seat back lifting mechanism and learning chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121236786.9U CN214964032U (en) | 2021-06-03 | 2021-06-03 | Seat back lifting mechanism and learning chair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214964032U true CN214964032U (en) | 2021-12-03 |
Family
ID=79086580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121236786.9U Active CN214964032U (en) | 2021-06-03 | 2021-06-03 | Seat back lifting mechanism and learning chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214964032U (en) |
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2021
- 2021-06-03 CN CN202121236786.9U patent/CN214964032U/en active Active
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