CN212920934U - Blackboard with expandable blackboard surface - Google Patents

Abstract

The utility model relates to a blackboard technical field just discloses a blackboard of expanded blackboard face, including blackboard body, blackboard body's bottom fixed mounting has the support, the holding tank has all been seted up to blackboard body's the left and right sides, two the equal movable mounting in inside of holding tank has the extension board that extends to blackboard body outside, two the equal fixed mounting in one side that the extension board carried on the back mutually has spacing, two the equal fixed mounting in one side that spacing carried on the back mutually has the handle. This blackboard of expanded blackboard face, through having seted up the holding tank to blackboard body, can hold and spacing extension board, through having seted up the draw-in groove to blackboard body, and installed the dop to the jump ring, and installed the handle to spacing, the pulling handle, extension board can be to the outside removal of holding tank, can go into the draw-in groove through the extension card of jump ring when the dop removes to draw-in groove department, thereby fix the extension board that extends, reached the purpose of expanded writing face.

Description

Blackboard with expandable blackboard surface

Technical Field

The utility model relates to a blackboard technical field specifically is a blackboard of expanded blackboard face.

Background

The blackboard is not particularly a black board, is a plane which can be repeatedly written by chalk in the traditional sense, is hard, is mainly used for teaching, is generally made of wood boards or ground glass and the like, can be written on by specific writing materials such as chalk and the like, and is mostly black, dark green, white and beige.

Along with the development of society, the variety of blackboard is also more, can divide into various steel sheet, novel material composite sheet, magnetism blackboard, glass blackboard and staff music blackboard etc. and the structure size of present blackboard all is comparatively fixed, also can't be too big with it for convenient storage or transportation, leads to writing the face often to appear the insufficient condition, so provides the blackboard of expanded blackboard face and solves above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a blackboard of expanded blackboard face possesses the advantage of the expanded blackboard face, has solved the structure size of present blackboard all comparatively fixed, for convenient depositing or transport also can't be too big with it, lead to the problem that the insufficient condition can often appear in the blackboard face.

(II) technical scheme

For the purpose that realizes above-mentioned expanded clipboard face, the utility model provides a following technical scheme: a blackboard with an expandable blackboard face comprises a blackboard body, wherein a support is fixedly arranged at the bottom of the blackboard body, the left side and the right side of the blackboard body are respectively provided with a containing groove, an extending plate extending to the outside of the blackboard body is movably arranged in each containing groove, one side of each extending plate opposite to each other is fixedly provided with a limiting strip, one side of each limiting strip opposite to each other is fixedly provided with a handle, the inner top wall of each containing groove is provided with a clamping groove positioned in the blackboard body, the top of the blackboard body is provided with a through hole extending to the inside of the clamping groove, the inside of each through hole is movably provided with an extrusion rod extending to the inside of the clamping groove, the bottom of each extrusion rod is fixedly provided with an extrusion block, the tops of the two blackboard bodies are respectively provided with a telescopic groove, and the insides of the two, and two clamping heads corresponding to the clamping grooves are fixedly arranged at the tops of the clamping springs.

Preferably, the bottom of the support is fixedly provided with a cushion block, the bottom of the cushion block is fixedly provided with a non-slip mat, and the non-slip mat is made of rubber.

Preferably, the holding tank all is the rectangle with the extension board, the inner wall laminating of extension board and holding tank.

Preferably, the handle is fixedly provided with an anti-slip sleeve outside, and the outer surface of the anti-slip sleeve is provided with an anti-slip groove.

Preferably, the top of the extrusion rod extends to the outside of the blackboard body, and the top of the extrusion rod is fixedly provided with a pressing sheet.

Preferably, the inner wall of the right side of the through hole is provided with a return groove located inside the blackboard body, the right side of the extrusion rod is fixedly provided with a return block extending to the inside of the return groove, and the bottom of the return block is fixedly provided with a return spring.

(III) advantageous effects

Compared with the prior art, the utility model provides a blackboard of expanded blackboard face possesses following beneficial effect:

this blackboard of expanded blackboard face, through having seted up the holding tank to blackboard body, can hold and spacing extension board, through having seted up the draw-in groove to blackboard body, and installed the dop to the jump ring, and the handle has been installed to spacing, the pulling handle, extension board can remove to the outside of holding tank, can go into the draw-in groove through the extension card of jump ring when the dop removes to draw-in groove department, thereby fix extension board that extends, the purpose of expanded writing face has been reached, through having seted up the through-hole to blackboard body, and to the through-hole mounted the stripper bar, and the stripper block has been installed to the stripper bar, press the stripper bar and can release the draw-in groove with the dop, can push into the holding tank with extension board.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is an enlarged view of A in FIG. 1;

fig. 3 is an enlarged view of B in the structure of fig. 1.

In the figure: 1 blackboard body, 2 supports, 3 holding tanks, 4 extension boards, 5 spacing strips, 6 handles, 7 draw-in grooves, 8 through-holes, 9 extrusion poles, 10 extrusion blocks, 11 flexible grooves, 12 jump rings, 13 dops.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a blackboard with an expandable blackboard face comprises a blackboard body 1, a bracket 2 is fixedly installed at the bottom of the blackboard body 1, a cushion block is fixedly installed at the bottom of the bracket 2, an anti-slip pad is fixedly installed at the bottom of the cushion block, the anti-slip pad is made of rubber, accommodating grooves 3 are respectively formed in the left side and the right side of the blackboard body 1, extending plates 4 extending to the outer portion of the blackboard body 1 are movably installed in the two accommodating grooves 3, the accommodating grooves 3 and the extending plates 4 are rectangular, the extending plates 4 are attached to the inner walls of the accommodating grooves 3, limiting strips 5 are respectively fixedly installed on the opposite sides of the two extending plates 4, handles 6 are respectively fixedly installed on the opposite sides of the two limiting strips 5, anti-slip sleeves are fixedly installed on the outer portions of the handles 6, anti-slip grooves are formed in the outer surfaces of the anti-slip, through-hole 8 that extends to inside of draw-in groove 7 is seted up at blackboard body 1's top, the inside movable mounting of through-hole 8 has the stripper bar 9 that extends to inside of draw-in groove 7, the top of stripper bar 9 extends to blackboard body 1's outside, the top fixed mounting of stripper bar 9 has the pressing sheet, the return groove that is located blackboard body 1 inside is seted up to through-hole 8's right side inner wall, the right side fixed mounting of stripper bar 9 has the return piece that extends to return inslot portion, the bottom fixed mounting of return piece has return spring, the bottom fixed mounting of stripper bar 9 has extrusion piece 10, flexible groove 11 has all been seted up at two blackboard body 1's top, the equal fixed mounting in inside of two flexible grooves 11 has jump ring 12, the equal fixed mounting in top of two jump rings 12 has dop 13 that corresponds with.

In conclusion, this blackboard of expanded blackboard face, through having seted up holding tank 3 to blackboard body 1, can hold and spacing extension board 4, through having seted up draw-in groove 7 to blackboard body 1, and to dop 13 has been installed to jump ring 12, and handle 6 has been installed to spacing strip 5, pulling handle 6, extension board 4 can remove to the outside of holding tank 3, can go into draw-in groove 7 through the extension card of jump ring 12 when dop 13 removes to draw-in groove 7 department, thereby extension board 4 that extends out is fixed, the purpose of expanded writing board face has been reached, through having seted up through-hole 8 to blackboard body 1, and to through-hole 8 installed stripper bar 9, and to stripper bar 9 installed stripper block 10, press stripper bar 9 and can release draw-in groove 7 with dop 13, can push extension board 4 into in holding tank 3.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a blackboard of expanded blackboard face, includes blackboard body (1), its characterized in that: the blackboard is characterized in that a support (2) is fixedly arranged at the bottom of the blackboard body (1), the left side and the right side of the blackboard body (1) are respectively provided with a containing groove (3), two extending plates (4) extending to the outer part of the blackboard body (1) are respectively movably arranged in the containing grooves (3), one side of each extending plate (4) opposite to the other is respectively fixedly provided with a limiting strip (5), one side of each limiting strip (5) opposite to the other is respectively fixedly provided with a handle (6), the inner top wall of each containing groove (3) is respectively provided with a clamping groove (7) positioned in the blackboard body (1), the top of the blackboard body (1) is provided with a through hole (8) extending to the inside of the clamping groove (7), the inside of the through hole (8) is movably provided with an extruding rod (9) extending to the inside of the clamping groove (7), the bottom of the extruding rod (9) is, two flexible groove (11), two have all been seted up at the top of blackboard body (1) the equal fixed mounting in inside in flexible groove (11) has jump ring (12), two the equal fixed mounting in top of jump ring (12) has dop (13) that correspond with draw-in groove (7).

2. The blackboard of claim 1, wherein: the bottom fixed mounting of support (2) has the cushion, the bottom fixed mounting of cushion has the slipmat, the slipmat is rubber.

3. The blackboard of claim 1, wherein: holding tank (3) all are the rectangle with extension board (4), the inner wall laminating of extension board (4) and holding tank (3).

4. The blackboard of claim 1, wherein: the anti-skidding handle is characterized in that an anti-skidding sleeve is fixedly arranged outside the handle (6), and an anti-skidding groove is formed in the outer surface of the anti-skidding sleeve.

5. The blackboard of claim 1, wherein: the top of the extrusion rod (9) extends to the outside of the blackboard body (1), and the top of the extrusion rod (9) is fixedly provided with a pressing sheet.

6. The blackboard of claim 1, wherein: the right side inner wall of through-hole (8) is seted up and is located blackboard body (1) inside return groove, the right side fixed mounting of extrusion stem (9) has the return piece that extends to return inslot portion, the bottom fixed mounting of return piece has return spring.

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