Angle-adjustable table top turnover mechanism and writing desk thereof

Abstract

The utility model discloses an angle-adjustable table top turnover mechanism and a writing desk thereof, and belongs to the technical field of furniture, the angle-adjustable table top turnover mechanism comprises a base, a support, a locking piece, a rotating shaft, a locking rod and a rotating arm, the support is arranged on the base, the rotating shaft is rotatably connected to the support, the locking piece is fixedly connected to the rotating shaft, a sliding groove perpendicular to the ground is formed in the side wall of the support, and the locking rod is fixedly connected to the rotating arm. The locking rod is slidably connected into the sliding groove, the rotating arm is rotatably connected to the rotating shaft, a limiting groove is formed in the locking piece, the locking rod is arranged in the limiting groove, the limiting groove comprises a first limiting section and a second limiting section which are connected, and the second limiting section is closer to the rotating center of the locking piece than the first limiting section. The locking rod can be driven to slide up and down in the sliding groove when the locking piece rotates, locking and unlocking of the turnover mechanism are achieved, action is simple, operation is convenient, and locking is stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to furniture technical field, concretely relates to a desk surface turnover mechanism of angle adjustable and writing desk. BACKGROUND

[0002] The existing turnover table, such as lifting table, learning table and the like, is widely used in children learning, painting, office and the like, which mainly adjusts the desk surface inclination angle to adapt to different use requirements, such as reading, writing, drawing and different height users, to improve comfort and save space. However, the product has the following shortcomings: in the operation convenience, the angle adjusting mechanism is complex, the operation steps are cumbersome and the human engineering is insufficient, the user often needs to stand or change the body position, such as standing up after sitting, to complete the adjustment, the adjustment is inconvenient, and there is a safety hazard of mechanism pinch hand; the locking mechanism is not fixed firmly, the desk surface is prone to angle deviation after being pressed, leading to insufficient stability, the unilateral locking design is more prone to cause the imbalance of force on both sides of the desk surface and structural shaking, the overall bearing capacity is poor, the locking mechanism is prone to shaking in long-term use, which seriously affects the use reliability and user experience, therefore, the present needs a turnover table plate with convenient adjustment operation and stable bearing. SUMMARY

[0003] One of the purposes of the utility model is to provide a desk surface turnover mechanism of angle adjustable, which solves the problems of complex and low bearing capacity of the existing turnover mechanism.

[0004] To achieve the above utility model purposes, the technical scheme adopted by the utility model is as follows:

[0005] A desk surface turnover mechanism of angle adjustable, comprising a base, a support, a locking piece, a rotating shaft, a locking rod and a rotating arm, the support is arranged on the base, the rotating shaft is rotationally connected on the support, the locking piece is fixedly connected on the rotating shaft, a sliding groove perpendicular to the ground is arranged on the side wall of the support, the locking rod is slidingly connected in the sliding groove, the rotating arm is rotationally connected on the rotating shaft, a limiting groove is arranged on the locking piece, the locking rod is arranged in the limiting groove, the limiting groove comprises a first limiting section and a second limiting section connected with each other, the second limiting section is closer to the rotating center of the locking piece than the first limiting section, so that the locking piece can drive the locking rod to slide up and down in the sliding groove when rotating, a clamping groove is arranged on the rotating arm, the clamping groove cooperates with the locking rod to complete locking, realizing the locking and unlocking of the turnover mechanism, the action is simple, the operation is convenient and the locking is stable.

[0006] Further, the reset member is sleeved on the rotating shaft, and two ends of the reset member abut against the locking member and the locking rod respectively, so that pressure is continuously applied to reset the locking member and prevent the moving element from shaking in the locked state, and the operation is convenient and the safety of automatic locking is higher.

[0007] Preferably, the reset member is a double-end torsion spring, and the two sides can apply elastic force, so that the movement is more stable.

[0008] Further, the lever handle is connected to the outward end of the rotating shaft, and the length direction of the lever handle is perpendicular to the axis of the rotating shaft, so that the operation is more labor-saving when unlocking and locking, and the operation can be performed in a sitting position.

[0009] Further, the lever handle comprises an extension part, a holding part and an anti-skid part, one end of the extension part is connected to the rotating shaft, the other end is connected to the holding part, and the anti-skid part is arranged on the holding part, so that the stability can be maintained in the locked state, and the operation is convenient.

[0010] Further, the locking member comprises a supporting plate and a supporting plate, the supporting plate is symmetrically arranged on the two sides of the supporting plate, and the rotating shaft is provided with a polygonal section, and the supporting plate is fixedly connected with the polygonal section of the rotating shaft, so that the bearing capacity and stability are improved.

[0011] Further, the locking groove comprises a plurality of continuous groove positions, the groove positions are matched with the locking rod to complete locking, the continuous adjustment of a plurality of angles is realized, the locking state is stable, and the unlocking is not easy.

[0012] Further, the rotating angle of the rotating arm is D, and 0°≤D≤90°, so that the adjustment range is large, the inclined or flat state can be used, and the application range is wide.

[0013] Further, the first limiting section and the second limiting section are provided with an inclined transition section, so that the action is smooth when unlocking and locking, and the operation is easy.

[0014] The second purpose of the writing table is to solve the problem of insufficient stability of the angle adjustment of the existing writing table.

[0015] To achieve the above-mentioned utility model purposes, the technical solutions adopted by the utility model are as follows:

[0016] A writing table comprises the angle-adjustable table surface turnover mechanism and a table plate, the table plate is arranged at the end of the rotating arm, the inclined angle of the table plate can be adjusted by reaching out, the operation is convenient, and the support is stable.

[0017] The utility model has the advantages that:

[0018] (1) the angle adjustable table top turnover mechanism is driven by the double-section limiting groove on the locking member to make the locking rod ascend and descend in the vertical sliding groove, so that the locking rod is engaged with the rotating arm to form double-side symmetrical locking force, the locking rod moves up and down and is controlled by the rotating locking member, the locking action is stable and reliable, and can bear larger load, and the defects that the existing structure is easy to shake after being turned over under pressure are overcome, even if heavy objects are placed or the user leans, the rotating arm can still remain stable.

[0019] (2) the angle adjustable table top turnover mechanism is provided with a lever handle designed through an extension arm and an anti-skid holding part, combined with the mechanical transmission of the rotating shaft linkage locking member, the user can complete unlocking or locking by pulling with one hand in a sitting position, the problem that the existing technology needs to stand to adjust when turning over is solved, and because the operation end is away from the moving part, the anti-pinch effect can be achieved, and the hand is safer during use; in addition, the double-head torsion spring is pre-tightened to the rotating shaft, the two ends of the double-head torsion spring continuously press the locking member and the locking rod, the locking rod is automatically pushed to reset to the locking position after angle adjustment, and the spring force can compensate external vibration or impact in real time, and the support plates arranged on the two sides of the supporting plate of the locking member form stable double-side support to the table plate part, so that shaking due to unbalanced force is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The shaft view of the angle adjustable table top turnover mechanism provided by the utility model is provided;

[0021] Figure 2 The front view of the angle adjustable table top turnover mechanism provided by the utility model is provided;

[0022] Figure 3 The top view of the angle adjustable table top turnover mechanism provided by the utility model is provided;

[0023] Figure 4 The Figure 2 The sectional view along the line A-A;

[0024] Figure 5 The explosion view of the writing desk provided by the utility model is provided;

[0025] Figure 6 The front view of the writing desk provided by the utility model is provided;

[0026] Figure 7 The side view of the writing desk provided by the utility model is provided;

[0027] Figure 8 The Figure 6 The sectional view along the line B-B;

[0028] Figure 9 The Figure 7 The sectional view along the line C-C;

[0029] Figure 10 A schematic diagram of the flipping angle of the writing desk is provided for this utility model.

[0030] Figure label:

[0031] 1. Base; 2. Bracket; 21. Slide groove; 3. Locking component; 31. Limiting groove; 311. First limiting section; 312. Second limiting section; 313. Inclined transition section; 32. Support plate; 33. Support plate; 4. Rotating shaft; 5. Reset component; 6. Lever handle; 61. Extension part; 62. Grip part; 63. Anti-slip part; 7. Locking rod; 8. Rotating arm; 81. Locking groove; 9. Table; 91. Support frame; 92. Column. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0033] Example 1

[0034] like Figures 1-10 As shown, this embodiment discloses an angle-adjustable tabletop flipping mechanism, including a base 1, a bracket 2, a locking member 3, a rotating shaft 4, a locking rod 7, and a rotating arm 8. The bracket 2 is mounted on the base 1, the rotating shaft 4 is rotatably connected to the bracket 2, and the locking member 3 is fixedly connected to the rotating shaft 4. The side wall of the bracket 2 is provided with a sliding groove 21 perpendicular to the ground, and the locking rod 7 is disposed in the sliding groove 21. The locking member 3 is provided with a limiting groove 31, and the locking rod 7 is slidably connected in the limiting groove 31. The rotating arm 8 is rotatably connected to the rotating shaft 4. The limiting groove 31 includes a first limiting segment 311 and a second limiting segment 312 connected together. The limiting section 312 is closer to the rotation center of the locking member 3 than the first limiting section 311, so that when the locking member 3 rotates, it can drive the locking rod 7 to slide up and down in the slide groove 21. The rotating arm 8 is provided with a locking groove 81, which cooperates with the locking rod 7 to complete the locking and control the locking and unlocking of the rotating arm 8. The second limiting section 312 is used to release the locking member 3 and the locking rod 7. Specifically, when the locking member 3 rotates to the point where the locking rod 7 is located in the second limiting section 312, the locking rod 7 is in the highest position, and the rotating arm 8 is completely unlocked. When the locking rod 7 is in the first limiting section 311, its position is lower, and the rotating arm 8 is locked.

[0035] Preferably, the locking rod 7 includes a rod body and stops at both ends of the rod body, and a bearing is sleeved at the contact point between the rod body and the slide groove 21 to improve the smoothness of locking or unlocking.

[0036] Further, the reset member 5 is sleeved on the rotating shaft 4, and the two ends of the reset member 5 are respectively in contact with the locking member 3 and the locking rod 7, the reset member 5 is used for automatically resetting after the locking member 3 and the locking rod 7 are unlocked, and pressure can be applied in the locked state to prevent the rotating arm 8 from shaking and being unlocked due to accidental touch.

[0037] Preferably, the reset member 5 is a double-end torsional spring, and the two torsional arms of the double-end torsional spring are in contact with the locking rod 7, and the locking member 3 is stably supported by the locking rod 7 to prevent the locking member 3 and the locking rod 7 from shaking in the locked state.

[0038] Further, the lever handle 6 is connected to the outward end of the rotating shaft 4, the length direction of the lever handle 6 is perpendicular to the axis of the rotating shaft 4, the lever handle 6 plays a role of saving labor in unlocking, and can be kept stable under the action of gravity and occupies small space.

[0039] Referring to Figure 2 Further, the lever handle 6 includes an extension part 61, a holding part 62 and an anti-skid part 63, one end of the extension part 61 is connected to the rotating shaft 4, the other end is connected to the holding part 62, the anti-skid part 63 is arranged on the holding part 62, which facilitates holding and use, the width of the extension part 61 is smaller than that of the holding part 62, the lever handle 6 is perpendicular to the ground in the locked state, and can be kept stable under the action of gravity to prevent the locking member 3 and the locking rod 7 from being unlocked due to accidental touch; the holding part 62 can be pulled to unlock the locking member 3 and the locking rod 7 in a sitting position, which is labor-saving and convenient to operate.

[0040] Further, the locking member 3 includes a supporting plate 32 and a supporting plate 32, the supporting plate 32 is symmetrically arranged on both sides of the supporting plate 32, the rotating shaft 4 is partially provided with a polygonal cross section, and the supporting plate 32 is fixedly connected with the polygonal cross section of the rotating shaft 4, the supporting plate 32 is outward, which separates the internal moving elements from the external environment, prevents foreign matter from invading and damaging or being stuck, and plays a role of protection and stability improvement; the reset member 5 is sleeved on the rotating shaft 4 and located between the two supporting plates 32. The two torsional arms thereof extend downward and abut against the upper part of the locking rod 7.

[0041] Further, the rotating arm 8 is provided with a clamping groove 81, the clamping groove 81 includes a plurality of continuous groove positions, the groove positions cooperate with the locking rod 7 to complete locking, the groove positions are smoothly transitioned, the first limiting section 311 partially overlaps with the clamping groove 81, each groove position corresponds to a rotating angle of the rotating arm 8, and the groove positions are matched with the shape of the locking rod 7 to stably support the rotating arm 8; when the locking rod 7 slides downward in the sliding groove 21, the lower end of the locking rod 7 is clamped into one of the groove positions of the clamping groove 81 on the rotating arm 8 to realize locking; when the locking rod 7 slides upward, the lower end of the locking rod 7 is separated from the clamping groove 81 to realize unlocking and allow the rotating arm 8 to rotate.

[0042] Further, an inclined transition section 313 is arranged between the first limiting section 311 and the second limiting section 312, and smoothly connects the two sections, so that the trajectory of the lock rod 7 is continuous and smooth when the lock rod 7 slides in the limiting groove 31, and the operation is more labor-saving.

[0043] Preferably, referring to Figure 10 , the rotation angle of the rotating arm 8 is D, 0°≤D≤90°, the opposite two wall surfaces of the support 2 are open towards the locking member 3, the clamping groove 81 is arranged as an annular groove around the rotation center of the rotating arm 8, the groove clamping angle of the annular groove is more than 90°, so that the rotating arm 8 can rotate in the plane, large-angle adjustment is realized, and the base 1 is installed below the support 2, the rotating arm 8 is in contact with the base 1 to form a limit, so as to prevent the rotating arm 8 from swinging out of limit and damaging the platform.

[0044] The use process of the table top turnover mechanism is as follows:

[0045] When unlocking is needed, the user holds the gripping part 62 of the lever handle 6 and pulls the gripping part 62 upwards, the pulling of the lever handle 6 drives the rotating shaft 4 to rotate, the locking member 3 fixed on the rotating shaft 4 rotates, the rotation of the locking member 3 makes the limiting groove 31 on the locking member 3 start to act, the lock rod 7 is forced to slide upwards in the sliding groove 21 of the support 2 under the guidance of the limiting groove 31, at the same time, the reset member 5 sleeved on the rotating shaft 4 is compressed / twisted by the rotation of the locking member 3 and the movement of the lock rod 7, and stores energy, the upward movement of the lock rod 7 makes the lower end of the lock rod 7 completely separate from the clamping groove 81 on the rotating arm 8, and the rotating arm 8 is in an unlocked state; when angle adjustment is needed, in the unlocked state, the user can freely lift or lower the table top 9, and drive the rotating arm 8 to rotate around the rotating shaft 4, and the rotating arm 8 is rotated to the angle position expected by the user; when locking is needed, after the table top 9 reaches the target angle, the user slowly releases the lever handle 6, the lock rod 7 is pushed downwards in the sliding groove 21 under the elastic force of the reset member 5, the lower end of the lock rod 7 contacts the edge of the clamping groove 81 of the rotating arm 8, and the lower end of the lock rod 7 slides into the bottom of the groove position corresponding to the current angle of the rotating arm 8 along the transition surface. At the same time, the lock rod 7 slides back to the first limiting section 311 in the limiting groove 31 of the locking member 3, the lever handle 6 naturally swings back to the stable position of vertical downward under the action of gravity, the lock rod 7 is located in the first limiting section 311 of the limiting groove 31 of the locking member 3 and one of the groove positions of the clamping groove 81 of the rotating arm 8 at the same time, the pre-tightening force of the reset member 5 makes the lock rod 7 tightly abut against the groove position bottom, and supports the locking member 3 to keep the position stable, and the rotating arm 8 is firmly locked at the current angle.

[0046] Embodiment two

[0047] The embodiment also discloses a writing desk, which comprises an angle-adjustable desk surface overturning mechanism and a table board 9 arranged at the end of the rotating arm 8, wherein the end of the rotating arm 8 is provided with a support frame 91, the support frame 91 is provided with a through hole, a bolt is penetrated into the through hole and connected to the lower side of the table board 9, and the support frame 91 can be connected with a display board, a screen and the like on the desk surface overturning mechanism, so that the writing desk is suitable for a wide range of applications.

[0048] Preferably, a stand 92 is further included, and the base 1 is detachably connected to the stand 92, so that the supportable height can be changed through the stand 92, and the writing desk can be used under different conditions.

[0049] According to the disclosure and teaching of the above description, the skilled in the art of the utility model can also change and modify the above-mentioned embodiments. Therefore, the utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the utility model should also fall within the protection scope of the claims of the utility model. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the utility model.

Claims

1. An angle-adjustable table top turnover mechanism, comprising a base (1), a support (2), a locking member (3), a rotating shaft (4), a locking rod (7) and a rotating arm (8), characterized in that: The support (2) is arranged on the base (1), the rotating shaft (4) is rotatably connected to the support (2), the locking member (3) is fixedly connected to the rotating shaft (4), the side wall of the support (2) is provided with a chute (21) perpendicular to the ground, the locking rod (7) is slidably connected in the chute (21), the rotating arm (8) is rotatably connected to the rotating shaft (4), the locking member (3) is provided with a limiting groove (31), the locking rod (7) is arranged in the limiting groove (31), the limiting groove (31) comprises a first limiting section (311) and a second limiting section (312) connected to each other, the second limiting section (312) is closer to the rotating center of the locking member (3) than the first limiting section (311), so that the locking member (3) can drive the locking rod (7) to slide up and down in the chute (21) when rotating, the rotating arm (8) is provided with a clamping groove (81), and the clamping groove (81) is matched with the locking rod (7) to complete locking.

2. The angle-adjustable table top turnover mechanism according to claim 1, characterized in that: Further comprising a reset member (5), the reset member (5) is sleeved on the rotating shaft (4), and the two ends of the reset member (5) are respectively in contact with the locking member (3) and the locking rod (7).

3. The angle-adjustable table top turnover mechanism according to claim 2, characterized in that: The reset member (5) is a double-end torsion spring.

4. The angle-adjustable table top turnover mechanism according to claim 1, characterized in that: Further comprising a lever handle (6), one end of the lever handle (6) is connected to the outward end of the rotating shaft (4), and the length direction of the lever handle (6) is perpendicular to the axis of the rotating shaft (4).

5. The angle-adjustable table top turnover mechanism according to claim 4, characterized in that: The lever handle (6) comprises an extension part (61), a holding part (62) and an anti-skid part (63), one end of the extension part (61) is connected to the rotating shaft (4), the other end is connected to the holding part (62), and the anti-skid part (63) is arranged on the holding part (62).

6. The angle-adjustable table top turnover mechanism according to claim 5, characterized in that: The locking member (3) comprises a supporting plate (32) and a supporting plate (32), the supporting plate (32) is symmetrically arranged on both sides of the supporting plate (33), the rotating shaft (4) is partially provided with a polygonal cross section, and the supporting plate (32) is fixedly connected with the polygonal cross section part of the rotating shaft (4).

7. The angle-adjustable table top turnover mechanism according to claim 1, characterized in that: The clamping groove (81) comprises a plurality of continuous groove positions, and the groove positions are matched with the locking rod (7) to complete locking.

8. The angle-adjustable table top turnover mechanism according to claim 1, characterized in that: The rotating angle of the rotating arm (8) is D, and 0°≤D≤90°.

9. The angle-adjustable table top turnover mechanism according to claim 1, characterized in that: An inclined transition section (313) is arranged between the first limiting section (311) and the second limiting section (312).

10. A writing desk, characterized by: The angle-adjustable table top turnover mechanism according to any one of claims 1-9, and a table board (9) arranged at the end of the rotating arm (8).

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