Middle rod lifting structure of sitting posture corrector

Abstract

The utility model provides a middle rod lifting structure of a sitting posture corrector, which belongs to the field of sitting posture correcting equipment. It includes a bottom rod, a top rod, and a reset assembly. The bottom rod is provided with a sliding hole, the top rod is slidably arranged in the sliding hole, the reset assembly is rotatably installed on one end of the top rod near the bottom and is located in the sliding hole, the inner wall of the sliding hole is provided with a groove, the inner wall of the groove is fixed with a guide member, the left end of the guide member has a plurality of first guide grooves arranged obliquely upward, the upper and lower ends of the guide member both have a first arc surface arranged obliquely upward, the upper side walls of the plurality of first guide grooves both have a second arc surface arranged obliquely upward, a protrusion is fixed at one end of the reset assembly, the protrusion is embedded in the groove, the protrusion can be embedded in one of the first guide grooves, and the protrusion can be abutted against one of the first arc surfaces or one of the second arc surfaces. The utility model can realize the use and retraction of the top rod for upward and downward movement and extension, is easy to operate, and can adjust the height of the top rod according to the actual needs of the user, and has a wide range of applications.

Description

Technical Field

[0001] The utility model belongs to the field of sitting posture correcting equipment and relates to a middle rod lifting structure of a sitting posture correcting device. Background Art

[0002] In daily life, the correct sitting posture can protect the spine and prevent myopia. However, for some students with improper sitting posture, especially primary school students, they often cannot maintain the correct sitting posture for a long time, causing hunchbacks and affecting eye health. Therefore, a sitting posture corrector is needed to correct the sitting posture problem.

[0003] Most of the sitting posture adjustment devices currently available on the market are relatively fixed. They are not convenient to adjust according to the user's height during use and have a small scope of application. In order to solve the above problems, we have launched the following device. Utility Model Content

[0004] The utility model aims to address the deficiencies of the prior art and to propose a middle rod lifting structure for a sitting posture corrector, so as to solve the technical problem mentioned in the background art that the sitting posture corrector in the prior art cannot be height-adjusted according to the height of the user, resulting in a small scope of application.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

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

[0007] Bottom bar:

[0008] A top rod, wherein the bottom rod is provided with a sliding hole for the top rod to be embedded, and the top rod is slidably arranged in the sliding hole;

[0009] A reset assembly, the reset assembly is rotatably mounted on one end of the top rod near the bottom and is located in the sliding hole;

[0010] A guide member, wherein the inner wall of the sliding hole is provided with a groove, the guide member is fixed to the inner wall of the groove, the left end of the guide member has a plurality of first guide grooves arranged obliquely upward, the upper and lower ends of the guide member both have first arc surfaces arranged obliquely upward, and the upper side walls of the plurality of first guide grooves both have second arc surfaces arranged obliquely upward;

[0011] A protrusion, the protrusion is embedded in the groove, one end of the protrusion is connected to the reset component, when the protrusion plays a gear adjustment role, the protrusion can be embedded in one of the first guide grooves and can be abutted against the second arc surface corresponding to the embedded first guide groove, before the protrusion plays a gear adjustment role, the protrusion can be embedded between the lower end of the guide member and the inner bottom wall of the groove and abut against the first arc surface of the lower end of the guide member, when the protrusion completes the gear adjustment role, the protrusion can be embedded between the upper end of the guide member and the inner top wall of the groove and abut against the first arc surface of the upper end of the guide member.

[0012] Working principle:

[0013] When adjusting the height of the ejector rod:

[0014] Pull the push rod upward, and the protrusion provided at one end of the reset assembly abuts against the first arc surface at the lower end of the guide member. Under the guiding action of the first arc surface and the force applied upward, the protrusion moves obliquely upward along the first arc surface and drives the reset assembly to rotate to the left, so that the protrusion moves to the opening of one of the first guide grooves. The reset assembly moves upward and rotates at the same time. Under the action of the reset assembly, the reset assembly rotates to the right to reset and drives the protrusion to be embedded in one of the first guide grooves. When the protrusion is stuck in the first guide groove, the push rod can withstand the force applied from above and will not fall.

[0015] Move the protrusion from one of the first guide grooves to the first guide groove at the upper end: continue to pull the push rod, the push rod drives the protrusion to move upward and makes the protrusion abut against the second arc surface of one of the first guide grooves, the protrusion moves obliquely upward along the second arc surface and drives the reset component to rotate to the left, so that the protrusion moves to the opening of one of the first guide grooves, the reset component moves upward and rotates at the same time, under the action of the reset component, the reset component rotates to the right to reset and drives the protrusion to be embedded in the first guide groove at the upper end, so as to reciprocate. When the protrusion is stuck in the first guide groove, the push rod can withstand the force applied from above and will not fall;

[0016] When retracting the ram:

[0017] Continue to pull the push rod upward and repeat the above operation until the protrusion moves to the upper end of the guide member and abuts against the first curved surface at the upper end of the guide member, press the push rod downward, the protrusion moves obliquely downward along the first curved surface at the upper end of the guide member, and drives the reset assembly to rotate to the right, continue to press the push rod downward, so that the protrusion moves to the right end of the guide member, under the action of the reset assembly, the protrusion abuts against the right end of the guide member, the protrusion descends along the right end of the guide member until the protrusion moves to the lower end of the guide member, and the reset assembly drives the protrusion to rotate to the left, and makes the protrusion abut against the first curved surface at the lower end of the guide member.

[0018] The beneficial effects of the utility model are:

[0019] The utility model can effectively realize the use and retraction of the push rod for upward and downward movement extension, is easy to operate, has a firm structure and good stability, can realize the height adjustment of the push rod according to the actual needs of the user, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of a bottom rod of an embodiment of the utility model;

[0022] Figure 3 It is a cross-sectional view of an embodiment of the utility model;

[0023] Figure 4 is a cross-sectional view of a bottom rod of an embodiment of the utility model;

[0024] Figure 5 It is a schematic diagram of the structure of the ejector rod of an embodiment of the utility model;

[0025] Figure 6 It is a structural schematic diagram of a swing rod in an embodiment of the utility model;

[0026] Figure 7 It is a structural schematic diagram of a torsion spring according to an embodiment of the utility model.

[0027] Explanation of the reference numerals in the accompanying drawings: 1. bottom rod; 2. top rod; 3. sliding hole; 4. guide member; 5. groove; 6. first guide groove; 7. first arc surface; 8. second arc surface; 9. protrusion; 10. guide block; 11. second guide groove; 12. limiting groove; 13. rocker arm; 14. torsion spring; 15. round rod; 16. round hole; 17. slot; 18. adjustment slot; 19. bending section; 20. connecting hole; 21. arc block; 22. left slide groove; 23. right slide groove. DETAILED DESCRIPTION

[0028] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0029] like Figure 1-4 As shown, a middle rod lifting structure of a sitting posture corrector comprises:

[0030] Bottom bar 1:

[0031] A top rod 2, wherein the bottom rod 1 is provided with a sliding hole 3 for the top rod 2 to be embedded, and the top rod 2 is slidably arranged in the sliding hole 3, and the top rod 2 is pulled so that the top rod 2 can move up and down along the sliding hole 3;

[0032] A reset assembly, the reset assembly is rotatably mounted on one end of the top rod 2 close to the bottom and located in the slide hole 3;

[0033] A guide member 4, wherein the inner wall of the slide hole 3 is provided with a groove 5, the guide member 4 is fixed to the inner wall of the groove 5, the left end of the guide member 4 has a plurality of first guide grooves 6 arranged obliquely upward, the upper and lower ends of the guide member 4 both have first arc surfaces 7 arranged obliquely upward, and the inner upper side walls of the plurality of first guide grooves 6 all have second arc surfaces 8 arranged obliquely upward;

[0034] The protrusion 9 is embedded in the groove 5, and one end of the protrusion 9 is connected to the reset component. When the protrusion 9 plays a gear adjustment role, the protrusion 9 can be embedded in one of the first guide grooves 6 and can abut against the second arc surface 8 corresponding to the embedded first guide groove 6. Before the protrusion 9 plays a gear adjustment role, the protrusion 9 can be embedded between the lower end of the guide member 4 and the inner bottom wall of the groove 5 and abut against the first arc surface 7 at the lower end of the guide member 4. When the protrusion 9 completes the gear adjustment role, the protrusion 9 can be embedded between the upper end of the guide member 4 and the inner top wall of the groove 5 and abut against the first arc surface 7 at the lower end of the guide member 4. The first curved surface 7 at the upper end of the guide member 4 abuts against each other. When the push rod 2 moves upward along the sliding hole 3, the push rod 2 drives the reset assembly to rise synchronously. The reset assembly drives the protrusion 9 to rise. The protrusion 9 abuts against the first curved surface 7 at the lower end of the guide member 4. The protrusion 9 moves obliquely upward along the first curved surface 7. The protrusion 9 drives the reset assembly to rotate left until the protrusion 9 moves to the opening of one of the first guide grooves 6. Under the action of the reset assembly, the reset assembly drives the protrusion 9 to embed into the first guide groove 6. When the protrusion 9 is stuck in the first guide groove 6, the push rod 2 can withstand the force applied from above and will not fall.

[0035] like Figure 3 and Figure 4 As shown, a guide block 10 is fixed to the inner wall of the slide hole 3 , the push rod 2 is provided with a second guide groove 11 for the guide block 10 to be embedded, the guide block 10 is provided with a limiting groove 12 , and the groove 5 is arranged on the inner wall of the limiting groove 12 .

[0036] like Figure 3 , 5-7, the reset assembly includes a rocker arm 13 and a torsion spring 14, the rocker arm 13 is located in the limiting groove 12, a round rod 15 is fixed at one end of the top rod 2, a round hole 16 is opened at the lower end of the rocker arm 13 for the round rod 15 to pass through, the protrusion 9 is fixed at one end of the rocker arm 13 and is located at the upper end of the round hole 16, a clamping groove 17 is opened on the inner wall of the second guide groove 11, the lower end of the torsion spring 14 is embedded in the clamping groove 17, one end of the round rod 15 is fixed on the inner wall of the clamping groove 17 and passes through the lower end of the torsion spring 14, an adjusting groove 18 is opened on the inner wall of the second guide groove 11 and is located at the upper end of the clamping groove 17 and connected thereto, the upper end of the torsion spring 14 is embedded in the adjusting groove 18, the upper end of the torsion spring 14 has a bending section 19, and the rocker arm 13 has a connecting hole 20 for the bending section 19 to be embedded. When the swing rod 13 rotates around the round rod 15, the swing rod 13 can drive the upper end of the torsion spring 14 to rotate in the adjustment groove 18, so that the torsion spring 14 has a certain elastic potential energy.

[0037] like Figure 4 As shown, the left end of the guide member 4 has a plurality of equally spaced arc blocks 21, the number of the first guide grooves 6 is n, the number of the arc blocks 21 is n+1, one of the first guide grooves 6 is located between two of the arc blocks 21, the arc block 21 can make it easier for the protrusion 9 to pass through the arc block 21 and be embedded in the first guide groove 6 located at the upper end of the arc block 21, a left slide groove 22 for the protrusion 9 to be embedded is formed between the left end of the guide member 4 and the left side wall of the groove 5, a right slide groove 23 for the protrusion 9 to be embedded is formed between the right end of the guide member 4 and the right side wall of the groove 5, and the guide member 4 and the plurality of arc blocks 21 are integral.

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

[0039] Pull the push rod 2 upward, the protrusion 9 provided at one end of the swing rod 13 abuts against the first arc surface 7 at the lower end of the guide member 4. Under the guiding action of the first arc surface 7 and the upward force applied, the protrusion 9 moves obliquely upward along the first arc surface 7 and drives the swing rod 13 to rotate to the left. The swing rod 13 causes the torsion spring 14 to twist. The torsion spring 14 has a certain elastic potential energy. The protrusion 9 moves along the arc block 21 and moves to the opening of one of the first guide grooves 6. The torsion spring 14 mobilizes the swing rod 13 to rotate rightward to reset and drives the protrusion 9 to be embedded in one of the first guide grooves 6. Continue to pull the push rod 2, and the push rod 2 drives the protrusion 9 to move upward and makes the protrusion 9 abut against the second arc surface 8 of one of the first guide grooves 6. The protrusion 9 moves obliquely upward along the second arc surface 8 and drives the swing rod 13 to rotate to the left, so that the protrusion 9 moves along the arc portion to the opening of the first guide groove 6 at the upper end. The swing rod 13 moves upward and rotates at the same time. Under the action of the torsion spring 14, the swing rod 13 rotates to the right to reset and drives the protrusion 9 to be embedded in the first guide groove 6 at the upper end, thereby reciprocating. When the protrusion 9 is stuck in the first guide groove 6, the push rod 2 can withstand the force applied from above and will not fall;

[0040] When retracting the ram:

[0041] Continue to pull the push rod 2 upward and repeat the above operation until the protrusion 9 moves to the upper end of the guide member 4 and abuts against the first curved surface 7 at the upper end of the guide member 4. Press the push rod 2 downward, and the protrusion 9 moves obliquely downward along the first curved surface 7 at the upper end of the guide member 4, and drives the rocker bar 13 to rotate to the right. Continue to press the push rod 2 downward, so that the protrusion 9 moves to the right slide groove 23. Under the action of the torsion spring 14, the protrusion 9 abuts against the right end of the guide member 4, and the protrusion 9 descends along the right guide slide groove 23 until the protrusion 9 moves to the lower end of the guide member 4. When the torsion spring 14 drives the rocker bar 13 to rotate left, the rocker bar 13 drives the protrusion 9 to rotate left, and makes the protrusion 9 abut against the first curved surface 7 at the lower end of the guide member 4.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A middle rod lifting structure of a sitting posture corrector, characterized in that: include: Bottom bar (1): A top rod (2), wherein the bottom rod (1) is provided with a sliding hole (3) for the top rod (2) to be embedded, and the top rod (2) is slidably arranged in the sliding hole (3); A reset assembly, the reset assembly being rotatably mounted on one end of the top rod (2) close to the bottom and located in the slide hole (3); A guide member (4), wherein the inner wall of the slide hole (3) is provided with a groove (5), the guide member (4) is fixed to the inner wall of the groove (5), the left end of the guide member (4) has a plurality of first guide grooves (6) arranged obliquely upward, the upper and lower ends of the guide member (4) both have first arc surfaces (7) arranged obliquely upward, and the upper inner side walls of the plurality of first guide grooves (6) both have second arc surfaces (8) arranged obliquely upward; A protrusion (9), wherein the protrusion (9) is embedded in the groove (5), and one end of the protrusion (9) is connected to the reset component. When the protrusion (9) plays a gear adjustment role, the protrusion (9) can be embedded in one of the first guide grooves (6) and can abut against the second arc surface (8) corresponding to the embedded first guide groove (6). Before the protrusion (9) plays a gear adjustment role, the protrusion (9) can be embedded between the lower end of the guide member (4) and the inner bottom wall of the groove (5) and abut against the first arc surface (7) at the lower end of the guide member (4). When the protrusion (9) completes the gear adjustment role, the protrusion (9) can be embedded between the upper end of the guide member (4) and the inner top wall of the groove (5) and abut against the first arc surface (7) at the upper end of the guide member (4).

2. The middle rod lifting structure of the sitting posture corrector according to claim 1, characterized in that: A guide block (10) is fixed on the inner wall of the sliding hole (3), the push rod (2) is provided with a second guide groove (11) for the guide block (10) to be embedded, the guide block (10) is provided with a limiting groove (12), and the groove (5) is arranged on the inner wall of the limiting groove (12).

3. The middle rod lifting structure of the sitting posture corrector according to claim 2, characterized in that: The reset assembly comprises a swing rod (13) and a torsion spring (14); the swing rod (13) is located in the limiting groove (12); a round rod (15) is fixed to one end of the push rod (2); a round hole (16) is opened at the lower end of the swing rod (13) for the round rod (15) to pass through; the protrusion (9) is fixed to one end of the swing rod (13) and is located at the upper end of the round hole (16); a clamping groove (17) is opened on the inner wall of the second guide groove (11); the lower end of the torsion spring (14) is clamped The second guide groove (11) is embedded in the slot (17), one end of the round rod (15) is fixed in the slot (17) and passes through the lower end of the torsion spring (14), the inner wall of the second guide groove (11) is provided with an adjustment groove (18) located at the upper end of the slot (17) and connected thereto, the upper end of the torsion spring (14) is embedded in the adjustment groove (18), the upper end of the torsion spring (14) has a bent section (19), and the swing arm (13) is provided with a connecting hole (20) for the bent section (19) to be embedded.

4. The middle rod lifting structure of the sitting posture corrector according to claim 1, characterized in that: The left end of the guide member (4) has a plurality of arc-shaped blocks (21) distributed at equal intervals, the number of the first guide grooves (6) is n, the number of the arc-shaped blocks (21) is n+1, and one of the first guide grooves (6) is located between two of the arc-shaped blocks (21).

5. The middle rod lifting structure of the sitting posture corrector according to claim 1, characterized in that: A left slide groove (22) in which the protrusion (9) can be embedded is formed between the left end of the guide member (4) and the left inner wall of the groove (5), and a right slide groove (23) in which the protrusion (9) can be embedded is formed between the right end of the guide member (4) and the right inner wall of the groove (5).

6. The middle rod lifting structure of the sitting posture corrector according to claim 4, characterized in that: The guide member (4) and the plurality of arc-shaped blocks (21) are integrated.

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