Linkage lifting middle rod of sitting posture corrector

Abstract

The utility model provides a linkage lifting middle rod of a sitting posture corrector, and belongs to the technical field of correction equipment. Comprising a top rod, a connecting rod, a bottom rod, a first threaded rod and a second threaded rod, a first sliding groove allowing the top rod to be embedded is formed in the top of the connecting rod, the top rod is slidably arranged in the first sliding groove, a second sliding groove allowing the connecting rod to be embedded is formed in the top of the bottom rod, and the connecting rod is slidably arranged in the second sliding groove; the lower end of the ejector rod is provided with a threaded groove allowing the first threaded rod to be embedded and matched with threads of the first threaded rod, the lower end of the second threaded rod is fixed to the inner bottom wall of the second sliding groove, the first threaded rod is provided with a threaded hole, the lower end of the connecting rod is provided with a through hole communicated with the threaded hole, and the upper end of the second threaded rod penetrates through the through hole to be embedded into the threaded hole and is in threaded connection with the threaded hole. The top rod and the connecting rod can move upwards or downwards at the same time only by dragging upwards or pressing downwards the top rod, then the height is adjusted, the requirements of different users are met, and the application range is wide.

Description

Technical Field

[0001] The utility model belongs to the technical field of correction equipment, and relates to a linkage lifting middle rod of a sitting posture corrector. Background Art

[0002] Modern students are prone to fatigue due to long hours of studying at their desks, and the habit of incorrect sitting postures developed over a long time results in their writing postures not conforming to the standard. Over time, it is very easy for students to develop hunchbacks and affect their eyesight. Therefore, various correctors have emerged on the market.

[0003] There are also some problems with the sitting posture correctors in the related art, and the more prominent one is the convenience of adjustment. Since everyone has different heights, the corrector may need to be adjusted individually to ensure its effectiveness and comfort. However, some traditional sitting posture correctors have certain limitations in height adjustment and may not fully meet the needs of each user. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and propose a linkage lifting middle rod of a sitting posture corrector, which is used to solve the technical problem that the sitting posture corrector in the prior art cannot be adjusted to a suitable height according to the height of the user mentioned in the background art.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A linkage lifting middle rod of a sitting posture corrector, comprising:

[0007] A top rod;

[0008] A connecting rod, the connecting rod is provided with a first chute with an upward opening, and the top rod is slidably arranged in the first chute;

[0009] A bottom rod, the bottom rod is provided with a second chute with an upward opening, and the connecting rod is slidably arranged in the second chute;

[0010] A first threaded rod, the lower end of the first threaded rod is rotatably installed on the inner bottom wall of the first chute, and the lower end of the top rod is provided with a threaded groove for the first threaded rod to be embedded and threadedly adapted thereto;

[0011] A second threaded rod, the lower end of the second threaded rod is fixed on the inner bottom wall of the second chute, the first threaded rod has a threaded hole, the lower end of the connecting rod is provided with a through hole communicated with the threaded hole, and the upper end of the second threaded rod passes through the through hole and is embedded into the threaded hole and threadedly connected with the threaded hole.

[0012] Working Principle:

[0013] When in use, drag the top rod upwards. The threaded groove on the top rod will drive the rotation of the first threaded rod installed on the connecting rod under the screw thread fit. The first threaded rod rotates on the second threaded rod provided on the bottom rod and moves upwards. The first threaded rod cooperates with the second threaded rod to drive the connecting rod to move upwards. During this process, the top rod and the middle rod move upwards simultaneously.

[0014] When putting it away, apply a downward pressure to the top rod. The threaded groove on the top rod will drive the first threaded rod installed on the connecting rod to rotate in the opposite direction. The first threaded rod rotates on the second threaded rod provided on the bottom rod and moves downwards. The first threaded rod cooperates with the second threaded rod to drive the connecting rod to move downwards, and when the movement ends, it is all put away.

[0015] The beneficial effects of the present utility model are as follows:

[0016] By setting the first threaded rod and the second threaded rod, the present utility model can realize the simultaneous upward or downward movement of the top rod and the connecting rod only by dragging the top rod upwards or pressing it downwards, thereby adjusting the height, meeting the needs of different users, and having a wide range of applications. Description of the Drawings

[0017] Figure 1 is the structural utility model diagram of the embodiment of the present utility model;

[0018] Figure 2 is the side sectional view of the embodiment of the present utility model;

[0019] Figure 3 is the Figure 2 enlarged view of part A in the embodiment of the present utility model;

[0020] Figure 4 is the sectional view of the connecting rod of the embodiment of the present utility model;

[0021] Figure 5 is the front sectional view of the embodiment of the present utility model;

[0022] Figure 6 is the assembly schematic diagram of the first threaded rod and the disc of the embodiment of the present utility model;

[0023] Figure 7 is the structural schematic diagram of the bottom rod of the embodiment of the present utility model;

[0024] Figure 8 is the structural schematic diagram of the button of the embodiment of the present utility model;

[0025] Figure 9 is the assembly schematic diagram of the bottom rod and the button of the embodiment of the present utility model.

[0026] Description of reference numerals: 1. ejector rod; 2. connecting rod; 3. first chute; 4. bottom rod; 5. second chute; 6. first threaded rod; 7. threaded groove; 8. second threaded rod; 9. threaded hole; 10. through hole; 11. disc; 12. cavity; 13. connection hole; 14. mounting groove; 15. button; 16. connecting ear; 17. rotating shaft; 18. spring; 19. fixing block; 20. guiding hole; 21. groove; 22. limiting block; 23. notch; 24. first inclined surface; 25. second inclined surface; 26. limiting pin; 27. limiting groove; 28. convex block; 29. annular groove. Detailed implementation manners

[0027] The following are specific embodiments of the present utility model and in combination with the accompanying drawings, the technical solutions of the present utility model will be further described, but the present utility model is not limited to these embodiments.

[0028] As Figure 1-6 shown, a linkage lifting middle rod of a sitting posture corrector includes:

[0029] ejector rod 1;

[0030] connecting rod 2, a first chute 3 for the ejector rod 1 to be embedded is opened at the top of the connecting rod 2, and the ejector rod 1 is slidably arranged in the first chute 3;

[0031] bottom rod 4, a second chute 5 for the connecting rod 2 to be embedded is opened at the top of the bottom rod 4, and the connecting rod 2 is slidably arranged in the second chute 5;

[0032] first threaded rod 6, the lower end of the first threaded rod 6 is rotatably installed on the inner bottom wall of the first chute 3, a threaded groove 7 for the first threaded rod 6 to be embedded and threadedly engaged therewith is opened at the lower end of the ejector rod 1, a disc 11 is fixed at the lower end of the first threaded rod 6, a circular cavity 12 for the disc 11 to be embedded is provided on the inner bottom wall of the first chute 3, and a connection hole 13 for the threaded rod to pass through and communicate with the cavity 12 is opened on the inner bottom wall of the first chute 3;

[0033] second threaded rod 8, the lower end of the second threaded rod 8 is fixed on the inner bottom wall of the second chute 5, the first threaded rod 6 has a threaded hole 9, a through hole 10 communicating with the threaded hole 9 is opened at the lower end of the connecting rod 2, and the upper end of the second threaded rod 8 passes through the through hole 10 and is embedded into the threaded hole 9 and threadedly connected with the threaded hole 9.

[0034] When in the unfolded state for use, the ejector rod 1 is dragged upwards, the threaded groove 7 provided on the ejector rod 1 will drive the first threaded rod 6 installed on the connecting rod 2 to rotate under the thread fit, the first threaded rod 6 rotates and moves upwards on the second threaded rod 8 provided on the bottom rod 4, the first threaded rod 6 cooperates with the second threaded rod 8 and drives the connecting rod 2 to move upwards, and during this process, the ejector rod 1 and the middle rod move upwards simultaneously.

[0035] When putting it away, apply a downward pressure to the ejector rod 1. The threaded groove 7 provided on the ejector rod 1 will drive the first threaded rod 6 installed on the connecting rod 2 to rotate in the opposite direction. The first threaded rod 6 rotates on the second threaded rod 8 provided on the bottom rod 4 and moves downward. The first threaded rod 6 cooperates with the second threaded rod 8 and drives the connecting rod 2 to move downward. When the movement ends, it is all retracted.

[0036] As Figure 1 , 2 , 7, 8, 9 show that one end of the bottom rod 4 has an installation groove 14. A button 15 is movably installed in the installation groove 14. One side of the button 15 has two connecting ears 16. A rotating shaft 17 is fixed on the inner wall of the installation groove 14. Rotating holes for the rotating shaft 17 to pass through are opened in both connecting ears 16. A spring 18 is fixed on the inner bottom wall of the installation groove 14. One end of the spring 18 is fixed to one end of the button 15 and is located below the two connecting ears 16. A fixing block 19 located above the two connecting ears 16 is fixed to one end of the button 15. The bottom rod 4 is provided with a guiding hole 20 that communicates with the installation groove 14 and allows the fixing block 19 to pass through. A groove 21 opposite to the guiding hole 20 is opened at one end of the connecting rod 2. A plurality of equally spaced limiting blocks 22 are fixed on the inner side wall of the groove 21. A notch 23 for the limiting blocks 22 to be embedded is opened in the fixing block 19. One end of the limiting block 22 has a first inclined surface 24. A second inclined surface 25 that can abut against and cooperate with the first inclined surface 24 is provided on the upper inner wall of the notch 23. A convex block 28 is provided on the inner wall of the installation groove 14. An annular groove 29 is opened in the convex block 28. One end of the spring 18 is embedded in the annular groove 29. Press the button 15. The button 15 rotates around the rotating shaft 17 through the two connecting ears 16, and the fixing block 19 provided on the button 15 is disengaged from and moves away from the limiting blocks 22 provided in the groove 21. Release the button 15. Under the action of the spring 18, the button 15 rotates around the rotating shaft 17 through the two connecting ears 16, and the fixing block 19 provided on the button 15 is embedded into the groove 21, so that the limiting blocks 22 are embedded into the notch 23.

[0037] As Figure 1 and 9 show, a limiting pin 26 is fixed to one end of the bottom rod 4. The connecting rod 2 is provided with a limiting groove 27 that communicates with the groove 21 and penetrates through a plurality of limiting blocks 22. One end of the limiting pin 26 sequentially passes through the side wall of the bottom rod 4, the groove 21 and extends into the limiting groove 27. The upward movement distance of the connecting rod 2 is the length of the limiting groove 27 in the vertical direction. When the connecting rod 2 moves upward to the maximum distance, the limiting pin 26 is stuck at the lowermost end of the limiting groove 27 provided on the connecting rod 2, so that the middle rod cannot move upward any more.

[0038] The specific operation method of the present utility model is as follows:

[0039] When raising: Drag the ejector rod 1 upwards. The threaded groove 7 provided on the ejector rod 1 will drive the rotation of the first threaded rod 6 installed on the connecting rod 2 under threaded fit. The first threaded rod 6 rotates and moves upwards on the second threaded rod 8 provided on the bottom rod 4. The first threaded rod 6 cooperates with the second threaded rod 8 and drives the connecting rod 2 to move upwards. During this process, the ejector rod 1 and the middle rod move upwards simultaneously. When dragging the ejector rod 1 upwards, under the guiding action of the first inclined surface 24 of the limiting block 22 provided on the connecting rod 2 and the second inclined surface 25 of the fixed block 19, the button 15 will automatically bounce upwards to unlock the connecting rod 2, and the ejector rod 1 and the connecting rod 2 can move upwards normally. When the ejector rod 1 and the connecting rod 2 move downwards, the fixed block 19 provided on the button 15 cooperates with the limiting block 22 provided on the connecting rod 2, making it impossible for the connecting rod 2 to move downwards. Therefore, the ejector rod 1 will also be unable to move downwards;

[0040] When lowering: Press the button 15. The button 15 rotates around the rotating shaft 17 through two connecting ears 16, and the fixed block 19 provided on the button 15 is disengaged from and moves away from the limiting block 22 provided in the groove 21. Apply a downward pressure to the ejector rod 1. The threaded groove 7 provided on the ejector rod 1 will drive the rotation of the first threaded rod 6 installed on the connecting rod 2 in the opposite direction. The first threaded rod 6 rotates and moves downwards on the second threaded rod 8 provided on the bottom rod 4. The first threaded rod 6 cooperates with the second threaded rod 8 and drives the connecting rod 2 to move downwards. After the movement is completed, it is all retracted.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A linkage lifting middle rod of a sitting posture corrector, characterized in that: include: Ejector rod (1); A connecting rod (2), wherein the connecting rod (2) is provided with a slide groove (3) opening upward, and the top rod (1) is slidably arranged in the slide groove (3); A bottom rod (4), the bottom rod (4) being provided with a second slide groove (5) opening upward, and the connecting rod (2) being slidably arranged in the second slide groove (5); A threaded rod (6), the lower end of which is rotatably mounted on the inner bottom wall of the slide groove (3), and the lower end of the top rod (1) is provided with a thread groove (7) for the threaded rod (6) to be embedded and adapted to its thread; The second threaded rod (8) has a lower end fixed to the inner bottom wall of the second slide groove (5), the first threaded rod (6) has a threaded hole (9), the lower end of the connecting rod (2) has a through hole (10) connected to the threaded hole (9), and the upper end of the second threaded rod (8) passes through the through hole (10) and is embedded in the threaded hole (9) and is threadedly connected to the threaded hole (9).

2. The linkage lifting middle rod of the sitting posture corrector according to claim 1, characterized in that: A disc (11) is fixed at the lower end of the threaded rod (6); the inner bottom wall of the slide groove (3) has a circular cavity (12) for the disc (11) to be embedded; and the inner bottom wall of the slide groove (3) has a connecting hole (13) for the threaded rod to pass through and connected to the cavity (12).

3. The linkage lifting middle rod of the sitting posture corrector according to claim 1, characterized in that: One end of the bottom rod (4) is provided with a mounting groove (14), a button (15) is movably mounted in the mounting groove (14), one side of the button (15) is provided with two connecting ears (16), a rotating shaft (17) is fixed on the inner wall of the mounting groove (14), the two connecting ears (16) are provided with a rotating hole for the rotating shaft (17) to pass through, a spring (18) is fixed on the inner bottom wall of the mounting groove (14), one end of the spring (18) is fixed to one end of the button (15) and is located at the lower side of the two connecting ears (16), one end of the button (15) is fixed with a fixing block (19) located at the upper side of the two connecting ears (16), and the bottom rod (4) is provided with a guide hole (20) which is connected to the mounting groove (14) and can allow the fixing block (19) to pass through.

4. The linkage lifting middle rod of the sitting posture corrector according to claim 3, characterized in that: A groove (21) opposite to the guide hole (20) is formed at one end of the connecting rod (2); a plurality of equally spaced limit blocks (22) are fixed to the inner wall of the groove (21); a notch (23) for the limit block (22) to be embedded in is formed on the fixed block (19); a first inclined surface (24) is formed at one end of the limit block (22); and a second inclined surface (25) which can abut against and cooperate with the first inclined surface (24) is formed on the inner upper wall of the notch (23).

5. The linkage lifting middle rod of the sitting posture corrector according to claim 4, characterized in that: A limiting pin (26) is fixed at one end of the bottom rod (4); the connecting rod (2) is provided with a limiting groove (27) that communicates with the groove (21) and passes through a plurality of limiting blocks (22); one end of the limiting pin (26) passes through the side wall of the bottom rod (4), the groove (21) in sequence, and extends into the limiting groove (27).

6. The linkage lifting middle rod of the sitting posture corrector according to claim 3, characterized in that: The inner wall of the installation groove (14) is provided with a protrusion (28), the protrusion (28) is provided with an annular groove (29), and one end of the spring (18) is embedded in the annular groove (29).

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