Angle-adjustable writing desk based on gear ring meshing locking

Abstract

The utility model discloses an angle-adjustable writing desk based on gear ring meshing locking, which belongs to the technical field of desk angle adjustment, and comprises a desktop, desk legs and an angle adjusting mechanism, the angle adjusting mechanism is arranged on the desk legs, the desktop is arranged on the angle adjusting mechanism, the angle adjusting mechanism comprises a supporting arm, a limiting piece, a locking piece and a twisting piece, an inner gear ring is arranged on the supporting arm, a guide groove is formed in the limiting piece, a first tooth-shaped part is arranged at one end of the locking piece, a second tooth-shaped part is arranged on the side wall adjacent to one end of the locking piece, a tooth column is arranged on the twisting piece, the limiting piece is arranged on one side of the inner gear ring, the guide groove extends into the inner gear ring, and the locking piece is connected into the guide groove in a sliding mode. The torsion piece is rotationally connected to the limiting piece, the tooth column is meshed with the second tooth-shaped part, the torsion piece rotates to drive the locking piece to slide, separation and meshing of the first tooth-shaped part and the inner gear ring are achieved, combination is stable, the angle of the table top is convenient to adjust, and the angle subdivision degree is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to desk angle adjusting technical field, concretely relates to an angle adjustable writing table based on gear ring meshing locking. BACKGROUND

[0002] In the prior art, the scheme of using hydraulic rods in cooperation with hinges often has problems such as complicated operation, insufficient precision, poor stability, etc. Especially for children or the elderly, it is time-consuming and laborious to operate bilateral hydraulic rods, and it is difficult to achieve stable one-handed adjustment. At the same time, the hydraulic structure lacks an effective indexing mechanism, the angle adjustment is rough, and slow rebound or oil leakage may occur, affecting the safety and reliability of use.

[0003] Compared with the above, the gear adjusting mechanism has obvious advantages: it realizes rigid transmission through a rack or a gear set, can support clear indexing, meets the needs of fine angles in drawing, writing and other scenes, and the locking structure is simple and reliable, avoiding the sinking risk of the hydraulic system. Users can usually easily and accurately adjust the angle through a single knob or handle, which is intuitive and labor-saving, and has high long-term stability and almost no maintenance.

[0004] Therefore, there is a need for a desk angle adjusting mechanism based on gear transmission, easy to operate, stable to lock and supporting fine indexing adjustment. SUMMARY

[0005] The utility model aims at providing an angle adjustable writing table based on gear ring meshing locking, solving the problems of complicated operation, weak bearing capacity and inability to subdivide angles caused by insufficient locking force in the prior art.

[0006] To achieve the above utility model purposes, the technical solutions adopted by the utility model are as follows:

[0007] An angle adjustable writing table based on gear ring meshing locking, comprising a desktop, a table leg and an angle adjusting mechanism, the angle adjusting mechanism is arranged on the table leg, the desktop is arranged on the angle adjusting mechanism, the angle adjusting mechanism comprises a support arm, a limiting piece, a locking piece and a torsion piece, the support arm is provided with an inner gear ring, the limiting piece is provided with a guide groove, one end of the locking piece is provided with a first toothed part, and a second toothed part is arranged on the side wall adjacent to the one end of the locking piece, the torsion piece is provided with a toothed column, the limiting piece is arranged on the first side of the inner gear ring, and the guide groove extends into the inner gear ring, the locking piece is slidingly connected in the guide groove, the torsion piece is rotationally connected to the limiting piece, the toothed column is meshed with the second toothed part, the torsion piece drives the locking piece to slide, drives the first toothed part to separate from and mesh with the inner gear ring, and the combination is stable. The angle adjusting mechanism is convenient to operate and has high angle subdivision degree, and meets different use occasions.

[0008] Further, the angle adjusting mechanism further comprises a reset member arranged on the locking member, which pushes the first toothed part to engage with the internal toothed ring, and the locking mechanism can be automatically locked after the hand is released, thus being convenient to operate.

[0009] Further, the angle adjusting mechanism further comprises a second locking member, which is centrally symmetrical with the locking member along the internal toothed ring, and the upper and lower sides of the toothed column are engaged with the locking member and the second locking member respectively, thus being bidirectionally locked, load being evenly distributed, bearing capacity and service life being improved, and rotation adjustment being more stable.

[0010] Preferably, the locking member is arranged in an L-shaped cross section, and the locking member and the second locking member are combined to form a cuboid shape in the unlocked state, thus being stably moved in the guide groove and being high in action stability.

[0011] Further, the angle adjusting mechanism further comprises a rotating seat arranged on a second side of the internal toothed ring opposite to the first side, and a recess is arranged on an outward end of the rotating seat, and the torsion member is rotatably connected in the recess, thus being more stable and smooth in rotation.

[0012] Further, the limiting member further comprises two opposite protrusions, and the guide groove is arranged between the two protrusions, thus being stable in guidance and high in bearing capacity.

[0013] Further, the limiting member is further provided with a clamping groove, the internal toothed ring is protruded from the surface of the supporting arm, a clamping table is arranged on the outer sidewall of the internal toothed ring, the clamping table is fallen into the clamping groove to form a rotary sliding fit, thus preventing the supporting arm from shaking at will and restricting the angle of rotatable adjustment.

[0014] Preferably, a supporting part is arranged on the top of the supporting arm, which is used for installing a table top or other structures.

[0015] Preferably, a handle is arranged on one end of the torsion member, and a baffle is arranged between the handle and the toothed column, which is used for shielding and preventing foreign matters from entering.

[0016] Further, the angle adjusting mechanism further comprises a second angle adjusting mechanism and a transmission rod, the angle adjusting mechanism and the second angle adjusting mechanism are arranged in mirror image along the vertical central plane of the table top, a transmission part is arranged on the other end of the torsion member, the transmission part is coaxial with and connected with the toothed column, and the two ends of the transmission rod are respectively sleeved with the two transmission parts, thus improving the stability of support and increasing the load that can be borne.

[0017] The angle adjusting mechanism has the following beneficial effects:

[0018] (1) The angle-adjustable writing table based on the gear ring meshing locking is provided with an angle adjusting mechanism for supporting the table top, fine and accurate angle adjustment of the table top can be realized, the angle adjusting mechanism adopts a torsion member to drive a locking member to separate and mesh with the internal gear ring on the supporting arm, unlocking and locking of the table top rotation is realized, the locking member is provided with a first tooth-shaped part meshing with the internal gear ring and a second tooth-shaped part driving the limiting movement, a guide groove on the limiting member is in sliding fit with the locking member, the stability of the movement of the locking member is ensured, the adjustment action is accurate and stable, and the fineness of the angle adjustment is high.

[0019] (2) The angle-adjustable writing table based on the gear ring meshing locking is provided with two center-symmetrical locking members, a restoring member is arranged between the two locking members, so that the table top is uniformly stressed during the adjustment and can be automatically restored and locked after unlocking, the operation is more convenient, and a larger rotating pressure can be borne; in addition, the table top can be supported by one or more angle adjusting mechanisms, a plurality of angle adjusting mechanisms are connected in series through a transmission rod, the support of large load is realized, and the usable range is expanded. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 An exploded view of the angle adjusting mechanism provided by the utility model;

[0021] Figure 2 A front view of the angle adjusting mechanism provided by the utility model;

[0022] Figure 3 A side view of the angle adjusting mechanism provided by the utility model;

[0023] Figure 4 A top view of the angle adjusting mechanism provided by the utility model;

[0024] Figure 5 A sectional view along the line A-A; Figure 2 A sectional view along the line B-B;

[0025] Figure 6 A sectional view along the line B-B; Figure 3 A sectional view along the line B-B;

[0026] Figure 7 An isometric view of the locking member provided by the utility model;

[0027] Figure 8 An isometric view of the supporting arm provided by the utility model;

[0028] Figure 9 An isometric view of the rotating member provided by the utility model;

[0029] Figure 10 An isometric view of the angle-adjustable writing table based on the gear ring meshing locking provided by the utility model;

[0030] Figure 11 The side view of the angle-adjustable writing table based on the gear ring engagement locking is provided in the utility model;

[0031] Figure 12 For Figure 11 The cross-sectional view along the line C-C;

[0032] Figure 13 The structure schematic view of the locking member and the reset member provided in the utility model embodiment.

[0033] Reference signs:

[0034] 1, support arm; 11, inner gear ring; 12, bearing part; 13, clamping table; 2, limiting member; 21, protruding block; 22, guide groove; 23, clamping groove; 24, through hole; 3, locking member; 31, second tooth-shaped part; 32, first tooth-shaped part; 33, reset member; 3a, second locking member; 4, rotating seat; 41, through groove; 42, recess; 5, torsion member; 51, tooth column; 52, handle; 53, transmission part; 54, baffle; 6, table top; 7, table leg; 8, support rod; 9, transmission rod. DETAILED DESCRIPTION

[0035] The technical solutions in the utility model embodiments will be clearly and completely described below with reference to the drawings in the utility model embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0036] As Figures 1-13As shown, the embodiment discloses an angle-adjustable writing table based on gear ring engagement locking, which comprises a tabletop 6, a table leg 7 and an angle adjusting mechanism, the angle adjusting mechanism is arranged on the table leg 7, the tabletop 6 is arranged on the angle adjusting mechanism, the angle adjusting mechanism comprises a supporting arm 1, a limiting piece 2, a locking piece 3 and a torsion piece 5, the limiting piece 2 is fixed on the table leg 7, the supporting arm 1 can rotate around the limiting piece 2, the supporting arm 1 is provided with an inner gear ring 11, the limiting piece 2 is provided with a guide groove 22, one end of the locking piece 3 is provided with a first toothed part 32, and a second toothed part 31 is arranged on the side wall adjacent to the one end of the locking piece 3, the torsion piece 5 is provided with a toothed column 51, the limiting piece 2 is arranged on the first side of the inner gear ring 11, and the guide groove 22 extends into the inner gear ring 11, the locking piece 3 is slidingly connected in the guide groove 22, the torsion piece 5 is rotationally connected on the limiting piece 2, the toothed column 51 is engaged with the second toothed part 31, the torsion piece 5 drives the locking piece 3 to slide, and drives the first toothed part 32 to separate from and engage with the inner gear ring 11, after the angle adjusting mechanism is unlocked, the tabletop 6 can rotate freely around the center of the torsion piece 5, resetting the torsion piece 5 can complete locking, the wide-angle range adjustment of the tabletop 6 is realized, the first toothed part 32 is arranged in an arc shape, can be completely engaged with the inner gear ring 11, and can prevent shaking after locking, through subdividing teeth, the function of accurately adjusting the angle of the tabletop 6 can be achieved, and the adjustment precision is high and the stability is strong.

[0037] Wherein, the guide groove 22 is arranged along the radial direction of the inner gear ring 11, so that the engagement of the inner gear ring 11 and the first toothed part 32 is more matched, and the shaking of the tabletop 6 is prevented.

[0038] Referring to Figure 13 In an embodiment, the angle adjusting mechanism further comprises a reset piece 33, the reset piece 33 is arranged on the locking piece 3, pushes the first toothed part 32 to engage with the inner gear ring 11, one end of the reset piece 33 is connected on the locking piece 3, and the other end is abutted on the limiting piece 2, specifically, a wall surface of the limiting piece 2 towards the locking piece 3 is provided with a protruding part supporting the limiting piece 2. The reset piece 33 is a tensile spring, provides the locking piece 3 with reset elastic force to make the first toothed part 32 close to the inner gear ring 11, and can be reset by directly releasing the torsion piece 5 after unlocking.

[0039] Referring to Figure 6 In another embodiment, the angle adjusting mechanism further comprises a second locking piece 3a, the locking piece 3 and the second locking piece 3a are symmetrical along the center of the inner gear ring 11 and have the same structure, the upper and lower sides of the toothed column 51 are engaged with the locking piece 3 and the second locking piece 3a respectively, specifically, the toothed column 51 is engaged with two second toothed parts 31 respectively, improves the locking force and makes the stress of the inner gear ring 11 uniform up and down, and improves the service life.

[0040] Further, the cross section of the locking piece 3 is arranged as an "L shape", the locking piece 3 and the second locking piece 3a are combined to form a cuboid shape in the unlocked state, the locking piece 3 and the second locking piece 3a are moved towards or away from each other in the guide groove 22, and symmetrical locking is performed, thereby improving the stability of the locking joint, and the locking piece 3 and the second locking piece 3a are both provided with a reset piece 33, the two ends of the reset piece 33 are respectively abutted with the locking piece 3 and the second locking piece 3a, so that the angle can be automatically reset in both directions after unlocking and adjusting, and the operation is more simple and convenient.

[0041] Further, the angle adjusting mechanism further comprises a rotating seat 4, the rotating seat 4 is arranged on the second side of the inner ring gear 11 opposite to the first side, a recess 42 is arranged on the outer end of the rotating seat 4, and the torsion piece 5 is rotatably connected in the recess 42, the rotating seat 4 is used for closing the side surface of the inner ring gear 11, and a through groove 41 is arranged on the rotating seat 4 for the insertion and rotation of the torsion piece 5, thereby improving the stability of the rotation of the torsion piece 5.

[0042] Further, the limiting piece 2 further comprises two opposite protrusions 21, the guide groove 22 is arranged between the two protrusions 21, and a threaded hole is arranged on the protrusion 21 for the bolt connection of the rotating seat 4, the opposite two side walls of the protrusion 21 are in contact with the locking piece 3, and the protrusion 21 plays a guiding role.

[0043] Further, the limiting piece 2 is further provided with a clamping groove 23, the inner ring gear 11 protrudes from the surface of the support arm 1, a clamping post 13 is arranged on the outer side wall of the inner ring gear 11, the clamping post 13 falls into the clamping groove 23 to form a rotating and sliding fit, the clamping post 13 is used for limiting the relative position of the limiting piece 2 and the support arm 1, and preventing the support arm 1 from rotating beyond the limit, specifically, the clamping groove 23 is arranged as a sector around the center of the inner ring gear 11, the clamping post 13 rotates and slides in the clamping groove 23, and the clamping post 13 is used for the rotation limiting of the support arm 1, the angle between the two end faces of the clamping groove 23 and the center line of the inner ring gear 11 can be changed, the rotatable adjusting angle and direction of the tabletop 6 can be set, in addition, the clamping groove 23 extends to the middle part of the limiting piece 2 and communicates with the guide groove 22, the inner ring gear 11 falls into the clamping groove 23, and the stability of the connection of the limiting piece 2 is improved.

[0044] A through hole 24 is arranged at the bottom of the guide groove 22, and the through hole 24 is used for the insertion and passing of the torsion piece 5.

[0045] Preferably, the top of the support arm 1 is provided with a supporting part 12, a bolt hole is arranged on the supporting part 12 for the installation of the tabletop 6, the cross section of the support arm 1 is arranged as a triangle, the inner ring gear 11 is arranged close to the lower vertex of the triangle, the force is uniformly distributed during the support, and the load of the mechanism is reduced.

[0046] Further, one end of the twisting member 5 is provided with a handle 52, and a baffle 54 is arranged between the handle 52 and the tooth column 51. The handle 52, the baffle 54 and the tooth column 51 are sequentially arranged along the axial direction of the twisting member 5. The handle 52 is provided in an ellipsoidal shape, can be matched with the palm, and is adjusted to be more fitted during use, so that the adjustment hand feeling is improved. The baffle 54 shields the groove 42 on the rotating seat 4, prevents dust and foreign matters from entering the inside of the mechanism, and improves the service life during use.

[0047] The desktop adjustment process is as follows:

[0048] A user holds and rotates the handle 52 of one twisting member 5. The rotation of the twisting member 5 drives the rotation of the tooth column 51 thereon. The tooth column 51 is engaged with the second tooth-shaped part 31 of the locking member 3. The rotation of the tooth column 51 drives the locking member 3 to move along the guide groove 22 of the limiting member 2. According to the rotation direction of the tooth column 51, the tooth column 51 pushes the locking member 3 to move along the radial direction to the center of the inner tooth ring 11, so that the first tooth-shaped part 32 overcomes the resistance of the reset member 33 and is separated from the engagement state with the inner tooth ring 11 of the support arm 1. At this time, the first tooth-shaped part 32 of the locking member 3 is completely separated from the inner tooth ring 11, the angle adjustment mechanism is in an unlocked state, and the support arm 1 can freely rotate around the central axis of the twisting member 5. In the unlocked state of the mechanism, the user can directly push the desktop 6 with the hand, the desktop 6 drives the support arm 1 thereunder to freely rotate around the central axis of the twisting member 5, the support arm 1 drives the inner tooth ring 11 thereon to rotate together, and the desktop 6 is rotated to the required inclination angle. When the desktop 6 reaches the required angle, the user releases the handle 52 of the twisting member 5, the external force acting on the twisting member 5 disappears, the reset member 33 acts, pushes the connected locking member 3, and moves the locking member 3 along the guide groove 22 to move towards each other, that is, moves along the radial direction to the center of the inner tooth ring 11. The movement of the locking member 3 to each other makes the first tooth-shaped part 32 of the locking member 3 re-press into and engage into the tooth groove of the inner tooth ring 11 of the support arm 1. The first tooth-shaped part 32 is designed in an arc shape and matches the tooth shape of the inner tooth ring 11. After engagement, it can be tightly fitted to effectively prevent the desktop 6 from shaking. The angle adjustment mechanism is re-locked, the inner tooth ring 11 is locked by the locking member 3 and the limiting member 2, the support arm 1 and the desktop 6 cannot rotate relative to the table leg 7, and the desktop 6 is fixed at the new inclination angle.

[0049] Referring to Figures 10-12 The embodiment also discloses an angle-adjustable writing table based on the gear ring engagement locking, and further comprises a second angle adjustment mechanism and a transmission rod 9. The angle adjustment mechanism and the second angle adjustment mechanism are mirror-imaged and arranged along the vertical central surface of the desktop 6 and are the same in structure. A transmission part 53 is arranged on the other end of the twisting member 5. The transmission part 53 is coaxial with and connected to the tooth column 51. The two ends of the transmission rod 9 are respectively sleeved with the two transmission parts 53. One of the twisting members 5 is rotated to simultaneously adjust the two angle adjustment mechanisms to realize the angle adjustment of the desktop 6. The transmission part 53 is an external spline, and reliable twisting motion transmission is realized.

[0050] When the plurality of angle adjusting mechanisms are connected in series to support the table top 6, a plurality of table legs 7 are simultaneously installed, and the table legs 7 are connected by a support rod 8, the support rod 8 is hollow, and a transmission rod 9 is arranged in the support rod 8, so that the overall structure is compact and beautiful.

[0051] According to the disclosure and teaching of the above description, the skilled in the art of the present application can also change and modify the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should fall within the protection scope of the claims of the present application. 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 present application.

Claims

1. An angle-adjustable writing desk based on the engagement locking of a gear ring, comprising a table top (6), a table leg (7) and an angle adjustment mechanism, the angle adjustment mechanism is arranged on the table leg (7), and the table top (6) is arranged on the angle adjustment mechanism, characterized in that: The angle adjusting mechanism comprises a support arm (1), a limiting piece (2), a locking piece (3) and a torsion piece (5), the support arm (1) is provided with an inner gear ring (11), the limiting piece (2) is provided with a guide groove (22), one end of the locking piece (3) is provided with a first toothed portion (32), and a second toothed portion (31) is arranged on the side wall adjacent to the one end of the locking piece (3), the torsion piece (5) is provided with a toothed column (51), the limiting piece (2) is arranged on the first side of the inner gear ring (11), and the guide groove (22) extends into the inner gear ring (11), the locking piece (3) is slidably connected in the guide groove (22), the torsion piece (5) is rotatably connected on the limiting piece (2), the toothed column (51) is engaged with the second toothed portion (31), and the torsion piece (5) rotates to drive the locking piece (3) to slide, thereby driving the first toothed portion (32) to separate from or engage with the inner gear ring (11).

2. The angle-adjustable writing table based on the gear ring engagement locking according to claim 1, wherein: The angle adjusting mechanism further comprises a reset piece (33), the reset piece (33) is arranged on the locking piece (3) and pushes the first toothed portion (32) to engage with the inner gear ring (11).

3. The angle-adjustable writing table based on the gear ring engagement locking according to claim 1, wherein: The angle adjusting mechanism further comprises a second locking piece (3a), the locking piece (3) and the second locking piece (3a) are symmetrically arranged along the center of the inner gear ring (11), and the upper and lower sides of the toothed column (51) are respectively engaged with the locking piece (3) and the second locking piece (3a).

4. The angle-adjustable writing table based on the gear ring engagement locking according to claim 3, wherein: The locking piece (3) is provided with an "L-shaped" cross section, and the locking piece (3) and the second locking piece (3a) are combined to form a cuboid shape in the unlocked state.

5. The angle-adjustable writing table based on the gear ring engagement locking according to claim 1, wherein: The angle adjusting mechanism further comprises a rotating seat (4), the rotating seat (4) is arranged on the second side of the inner gear ring (11) opposite to the first side, an outer end of the rotating seat (4) is provided with a recess (42), and the torsion piece (5) is rotatably connected in the recess (42).

6. The angle-adjustable writing table based on the gear ring engagement locking according to claim 1, wherein: The limiting piece (2) further comprises two opposite protrusions (21), and the guide groove (22) is arranged between the two protrusions (21).

7. The angle-adjustable writing table based on the gear ring engagement locking according to claim 6, wherein: The limiting piece (2) is further provided with a clamping groove (23), the inner gear ring (11) protrudes from the surface of the support arm (1), an outer side wall of the inner gear ring (11) is provided with a clamping post (13), and the clamping post (13) falls into the clamping groove (23) to form a rotating and sliding fit.

8. The angle-adjustable writing table based on the engagement locking of the gear ring according to claim 1, characterized in that: the top of the supporting arm (1) is provided with a supporting part (12).

9. The angle-adjustable writing table based on the engagement locking of the gear ring according to claim 1, characterized in that: one end of the torsion member (5) is provided with a handle (52), and a baffle (54) is arranged between the handle (52) and the tooth column (51).

10. The angle-adjustable writing table based on the engagement locking of the gear ring according to any one of claims 1-9, characterized in that: a second angle-adjusting mechanism and a transmission rod (9) are further included, the angle-adjusting mechanism and the second angle-adjusting mechanism are mirror arranged along the vertical central plane of the table top (6), the other end of the torsion member (5) is provided with a transmission part (53), the transmission part (53) is coaxial and connected with the tooth column (51), and the two ends of the transmission rod (9) are respectively sleeved with the two transmission parts (53).

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