CN212979665U - Locking structure of reversible white board - Google Patents

Abstract

A locking structure of a reversible whiteboard comprises a panel and a support frame, wherein the panel is rotationally connected with the support frame through a rotating mechanism, and a rotating limiting mechanism is arranged between the panel and the support frame; still include the chuck, the one end of chuck is connected on the panel, and the other end of chuck is arc portion, it includes the moving part to rotate stop gear, the support frame includes at least one montant, sliding connection is on the montant about the moving part, the edge is equipped with a plurality of breach on the arc portion, be equipped with the lug of pegging graft with the breach on the moving part, still be equipped with gliding sliding control mechanism about the control moving part on the montant. After the structure more than adopting, compare with prior art the utility model discloses it is good for lie in convenient operation laborsaving, the fixed of blank is more stable.

Description

Locking structure of reversible white board

Technical Field

The utility model relates to a teaching tool field especially relates to blank.

Background

A whiteboard is a generally white writing surface made of a metal plate material. The whiteboard functions like a blackboard, and is a repeatedly erasable writing tool, which is generally used for teaching, conference discussion, or personal and family recording. The existing whiteboard generally comprises an H-shaped support, two sides of the whiteboard are rotatably connected with the support, the whiteboard is fixed by a rotating fixing mode through a screw rod and a hand wheel which are arranged between the support and the two sides of the whiteboard, the whiteboard is fixed by friction force, and the locking structure has poor stability.

SUMMERY OF THE UTILITY MODEL

The utility model discloses provide a better blank upset locking structure of stability to above problem.

The utility model provides a used technical scheme of above problem is: a locking structure of a reversible whiteboard comprises a panel and a support frame, wherein the panel is rotationally connected with the support frame through a rotating mechanism, and a rotating limiting mechanism is arranged between the panel and the support frame; still include the chuck, the one end of chuck is connected on the panel, and the other end of chuck is arc portion, it includes the moving part to rotate stop gear, the support frame includes at least one montant, sliding connection is on the montant about the moving part, the edge is equipped with a plurality of breach on the arc portion, be equipped with the lug of pegging graft with the breach on the moving part, still be equipped with gliding sliding control mechanism about the control moving part on the montant.

The utility model locks the whiteboard through the insertion and matching of the chuck and the moving part, after the chuck is arranged on the whiteboard, the chuck rotates when the whiteboard overturns, the moving part and the gap on the chuck form a rotation limiting mechanism, when the panel rotates to a required angle, the moving part slides upwards to ensure that the lug of the moving part is inserted on the gap of the chuck, and the whiteboard is fixed along with the rotation limiting mechanism; when the chuck needs to rotate, the movable piece slides downwards to separate the convex block from the notch, and the chuck can rotate freely; the sliding control mechanism is used for controlling the up-and-down sliding and fixing of the movable piece. After the structure more than adopting, compare with prior art the utility model discloses it is good for lie in convenient operation laborsaving, the fixed of blank is more stable.

Preferably, the sliding control mechanism comprises a sleeve and a handle, the sleeve is sleeved on the periphery of the vertical rod, the periphery of the lower portion of the sleeve is of a threaded structure, the handle is of a tubular structure, threads are arranged on the inner wall of the handle and in threaded connection with the periphery of the sleeve, and the moving part is located above the handle. The sleeve pipe is fixedly connected with the vertical rod, the handle is rotated after the handle is in threaded connection with the sleeve pipe, so that the handle can be moved up and down, the movable part above the handle is driven to slide up and down, and the handle is fixed on the sleeve pipe by utilizing threads after the handle stops rotating.

Preferably, an elastic element is arranged between the movable element and the handle.

Preferably, the elastic element is a spring, the spring is sleeved on the vertical rod, the upper end of the spring abuts against the lower end of the movable element, and the lower end of the spring abuts against the upper end of the handle.

Preferably, the upper end of the inner wall of the handle is provided with a first inner recess, the lower end of the inner wall of the movable part is provided with a second inner recess, the upper end of the spring is located in the second inner recess, and the lower end of the spring is located in the inner recess. After the arrangement, the spring is ensured not to deflect when stressed.

Preferably, the outer wall of the upper end of the sleeve is provided with a guide block, and the inner wall of the movable part is provided with a guide rail matched with the guide block. The cooperation of guide block and guide rail is favorable to the moving part to slide from top to bottom, prevents the moving part circumferential direction simultaneously.

Preferably, the rotating mechanism comprises a cross rod arranged on the support frame, a first shaft hole is formed in the chuck, and the cross rod penetrates through the first shaft hole. The cross rod and the first shaft hole on the chuck form a rotating mechanism, so that the chuck rotates by taking the cross rod as a shaft after the arrangement, and the chuck drives the panel to rotate.

Preferably, the rotating mechanism further comprises two connecting pieces arranged on the panel, the two connecting pieces are respectively located on two sides of the chuck, second shaft holes are formed in the connecting pieces, and two ends of the cross rod are respectively arranged in the second shaft holes in a penetrating mode. The connecting piece rotates by taking the cross rod as a shaft, so that the panel rotates more stably and smoothly.

Drawings

Fig. 1 is a schematic structural diagram of the locking structure of the reversible whiteboard of the present invention.

Fig. 2 is an exploded view of the locking structure of the reversible whiteboard of the present invention.

Fig. 3 is a sectional view of the locking structure of the reversible whiteboard of the present invention.

Fig. 4 is a schematic structural view of the locking structure of the reversible whiteboard of the present invention in another direction.

Fig. 5 is a schematic structural view of the locking structure of the reversible whiteboard of the present invention after the panel is turned 15 °.

Fig. 6 is the schematic structural diagram of the locking structure of the reversible whiteboard of the present invention after the panel is turned over by 90 degrees.

Fig. 7 is a schematic view of the structure of the chuck in fig. 2.

Fig. 8 is an enlarged view of a portion a in fig. 3.

Fig. 9 is a schematic structural view of the locking structure of the reversible whiteboard of the present invention after the sleeve, the handle, the spring and the moving member are connected.

As shown in the figure: 1. panel, 2, support frame, 21, montant, 22, horizontal pole, 3, chuck, 3a, arc portion, 31, breach, 32, first shaft hole, 4, moving part, 41, lug, 42, guide rail, 43, second indent, 5, sleeve pipe, 51, guide block, 6, handle, 61, first indent, 7, spring, 8, connection piece, 81, second shaft hole.

Detailed Description

The invention is further described with reference to the accompanying drawings and the detailed description.

As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8 and fig. 9, a locking structure of a reversible whiteboard comprises a panel 1 and a supporting frame 2, wherein the panel 1 is rotatably connected with the supporting frame 2 through a rotating mechanism, and a rotation limiting mechanism is arranged between the panel 1 and the supporting frame 2.

The back of panel 1 is equipped with chuck 3, and the chuck 3 quantity of this example is two, and chuck 3 semicircular in shape, and the one end of chuck 3 is connected on panel 1, and the other end of chuck 3 is arc portion 3a, is equipped with a plurality of breach 31 along the edge on the arc portion 3a, is equipped with first shaft hole 32 on the chuck 3.

The support frame 2 comprises a vertical rod 21 and a cross rod 22, the vertical rod 21 is connected to the middle of the cross rod 22 and is T-shaped, the cross rod 22 is arranged in a first shaft hole 32 of the chuck 3 in a penetrating mode, and the two chucks 3 are located on two sides of the vertical rod respectively. The back of the panel 1 is also provided with two connecting pieces 8, the two connecting pieces 8 are respectively positioned at two sides of the chuck 3, the connecting pieces 8 are provided with second shaft holes 81, and two ends of the cross rod 22 are respectively arranged in the second shaft holes 81 in a penetrating way. The chuck and the connecting piece 8 rotate by taking a cross bar as a shaft, and the cross bar, a first shaft hole of the chuck and a second shaft hole of the connecting piece form a rotating mechanism.

The vertical rod 21 is provided with a movable element 4, the movable element 4 is sleeved on the vertical rod 21 and can slide up and down, the movable element 4 is provided with a convex block 41 which is spliced with the gap 31, and the convex block 41 of the movable element 4 and the gap 31 of the chuck form a rotation limiting mechanism. The number of the protruding blocks 41 is two, the protruding blocks 41 are symmetrically arranged on the upper end surface of the movable member 4, and the two protruding blocks 41 on the movable member 4 are respectively in insertion fit with the notches 31 on the two chucks 3. The outer side of the bump 41 is also provided with a raised edge 411 to avoid the bump 41 from separating from the notch 31.

The vertical rod 21 is further provided with a sliding control mechanism for controlling the movable piece 4 to slide up and down, the sliding control mechanism comprises a sleeve 5 and a handle 6, the sleeve 5 is sleeved on the periphery of the vertical rod 21 and is fixed by welding, and the periphery of the lower portion of the sleeve 5 is of a threaded structure. The handle 6 is a tubular structure, the inner wall of the handle 6 is provided with threads which are in threaded connection with the periphery of the sleeve 5, and the moving part 4 is positioned above the handle 6. An elastic element is arranged between the moving element 4 and the handle 6, the elastic element is a spring 7, the spring 7 is sleeved on the vertical rod 21, the upper end of the spring 7 is propped against the lower end of the moving element 4, and the lower end of the spring 7 is propped against the upper end of the handle 6. The handle 6 and the sleeve 5 are in threaded connection, then the handle 6 can be rotated to realize vertical displacement, so that the movable part 4 above the handle 6 is driven to slide up and down, and the handle 6 is fixed on the sleeve 5 by utilizing threads after the handle 6 stops rotating.

The upper end of the inner wall of the handle 6 is provided with a first inner recess 61, the lower end of the inner wall of the movable element 4 is provided with a second inner recess 43, the upper end of the spring 7 is positioned in the second inner recess 43, and the lower end of the spring 7 is positioned in the inner recess 61. After the arrangement, the spring is ensured not to deflect when stressed.

The outer wall of the upper end of the sleeve 5 is provided with a guide block 51, and the inner wall of the movable member 4 is provided with a guide rail 42 matched with the guide block 51. The cooperation of the guide block 51 with the guide rail 42 facilitates the up-and-down sliding of the movable member 4 while preventing the circumferential rotation of the movable member 4.

The utility model discloses after setting up chuck 3 on the whiteboard, chuck 3 and connection piece 8 use horizontal pole 22 to rotate as the axle when the whiteboard upset, after reacing required angle, twist grip 6 utilizes handle 6 and sleeve pipe 5's spiro union cooperation to make handle 6 move up to drive spring 7 and moving part 4 and upwards slide, moving part 4 makes moving part 4's lug 41 peg graft on chuck 3's breach 31 after upwards sliding, 6 after-fixing of stop twist grip is on sleeve pipe 5, the whiteboard is fixed thereupon. When the whiteboard needs to rotate, the handle 6 is rotated reversely, the handle 6 is displaced downwards, the movable piece 4 slides downwards, the convex block 41 is separated from the notch 31, and the chuck 3 can rotate freely.

Claims (8)

1. A locking structure of a reversible whiteboard comprises a panel (1) and a support frame (2), wherein the panel (1) is rotatably connected with the support frame (2) through a rotating mechanism, and a rotating limiting mechanism is arranged between the panel (1) and the support frame (2); the method is characterized in that: still include chuck (3), the one end of chuck (3) is connected on panel (1), and the other end of chuck (3) is arc portion (3a), it includes moving part (4) to rotate stop gear, support frame (2) include at least one montant (21), sliding connection is on montant (21) about moving part (4), edgewise edge is equipped with a plurality of breach (31) on arc portion (3a), be equipped with lug (41) of pegging graft with breach (31) on moving part (4), still be equipped with gliding sliding control mechanism from top to bottom of control moving part (4) on montant (21).

2. The locking structure of an invertable whiteboard of claim 1, wherein: slide control mechanism includes sleeve pipe (5) and handle (6), the periphery at montant (21) is established in sleeve pipe (5) cover, and the periphery of sleeve pipe (5) lower part is helicitic texture, handle (6) are the tubular structure, and handle (6) inner wall is equipped with screw thread and sleeve pipe (5) periphery spiro union, moving part (4) are located the top of handle (6).

3. The locking structure of an invertable whiteboard of claim 2, wherein: an elastic element is arranged between the moving element (4) and the handle (6).

4. A locking structure for an invertable whiteboard according to claim 3, wherein: the elastic piece is a spring (7), the spring (7) is sleeved on the vertical rod (21), the upper end of the spring (7) is abutted against the lower end of the moving piece (4), and the lower end of the spring (7) is abutted against the upper end of the handle (6).

5. The locking structure of an invertable whiteboard of claim 4, wherein: handle (6) inner wall upper end is equipped with first indent (61), moving part (4) inner wall lower extreme is equipped with second indent (43), the upper end of spring (7) is located second indent (43), and the lower extreme of spring (7) is located first indent (61).

6. The locking structure of an invertable whiteboard of claim 2, wherein: the guide block (51) is arranged on the outer wall of the upper end of the sleeve (5), and the guide rail (42) matched with the guide block (51) is arranged on the inner wall of the moving piece (4).

7. The locking structure of an invertable whiteboard of claim 1, wherein: the rotating mechanism comprises a cross rod (22) arranged on the support frame (2), a first shaft hole (32) is formed in the chuck (3), and the cross rod (22) penetrates through the first shaft hole (32).

8. The locking structure of an invertable whiteboard of claim 7, wherein: the rotating mechanism further comprises two connecting pieces (8) arranged on the panel (1), the two connecting pieces (8) are respectively located on two sides of the chuck (3), second shaft holes (81) are formed in the connecting pieces (8), and two ends of the cross rod (22) are respectively arranged in the second shaft holes (81) in a penetrating mode.

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