CN201938624U

CN201938624U - Automatic chalk ejection device

Info

Publication number: CN201938624U
Application number: CN2011200074492U
Authority: CN
Inventors: 刘咏梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-01-02
Filing date: 2011-01-02
Publication date: 2011-08-24
Anticipated expiration: 2021-01-02

Abstract

The utility model discloses an automatic chalk ejection device, which comprises a chalk placing box, an inclined side plate, a chalk taking gear and a bottom plate, wherein the inclined side plate is arranged on the bottom plate, an upper inclined surface with an included angle with the bottom plate is arranged on the inclined side plate, the chalk placing box is hinged on the inclined side plate, the higher back end on the box bottom plate relatively to the inclined side plate and the two adjacent sides of the back end are provided with side plates for forming a chalk accommodating space, the chalk taking gear is arranged on the bottom plate, a vertical chalk press plate and the chalk taking gear are in adjacent arrangement, the end surfaces of the adjacent end parts of the vertical chalk press plate and the chalk taking gear are concave arc surfaces, and a vertical chalk space matched with the thick end cross section of the chalk is formed. When the automatic chalk ejection device is used, a box cover arranged on the chalk placing box is opened, the chalks are placed into the chalk accommodating space in a way parallel to a gap formed on the box cover, the chalks are accumulated in a position near the gap under the gravity effect, and one chalk can be taken out from the chalk placing box only through slightly lifting or pressing the chalk placing box by hand.

Description

Automatically eject the chalk device

Technical field

The utility model relates to a kind of teaching aid, especially relates to a kind of automatic ejection chalk device.

Background technology

At present, the teacher generally uses chalk when writing on the blackboard, and chalk all is to be contained in the box of a cuboid, but wants when taking chalk in common chalk holder handle to stretch to that chalk holder is inner could to take out chalk, and very inconvenience is also unhygienic.

Summary of the invention

The purpose of this utility model is in order to solve the deficiency that chalk does not eject automatically in existing common flour pencil box, a kind of automatic ejection chalk device to be provided.

The technical scheme that its technical problem that solves the utility model adopts is: eject the chalk device automatically and comprise and put chalk holder, oblique side plate, get chalk shelves and base plate, oblique side plate is set on the base plate, tiltedly has the ramp that is an angle with base plate on the side plate, the hinged chalk holder of putting on oblique side plate, put chalk holder and comprise a box plate, the setting that tilts of its ramp that is located in oblique side plate, rear end with it the adjacent both sides higher with respect to oblique side plate are provided with side plate and constitute a chalk accommodation space on box plate, hanging down an end with respect to oblique side plate, the front end of box plate is provided with an end plate, the two ends of this end plate and the side plate of adjacency are fixed, are provided with a slit between end plate lower limb and the box plate and roll out from this slit for chalk; On base plate, be provided with and get the chalk shelves, get the front of chalk gear in the slit, an end of getting the chalk shelves is corresponding with an end in this slit, establish a spacing between the other end in its other end and this slit, make the slit leave one section and do not got the part that the chalk shelves block, do not got in correspondence on the front end end plate of putting chalk holder of one section gap position that the chalk shelves block and set firmly perpendicular chalk pressing plate, erect the chalk pressing plate and get the adjacent setting of chalk shelves, the end face of the end of both adjacency is a cancave cambered surface, forms a perpendicular chalk space with the butt end cross-sections match of chalk.

The utility model has the advantages that: only need during use gently to mention with have gentle hands slightly or push and put chalk holder, just can from put chalk holder, take out piece of chalk.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further specified.

Fig. 1 is the structural representation of putting chalk holder in the utility model;

Fig. 2 be in the utility model base plate and on the structural representation of appurtenances;

Fig. 3 is a structural representation of the present utility model;

Structural representation when Fig. 4 is the ccontaining chalk of the utility model;

Schematic diagram when Fig. 5 is the utility model taking-up chalk.

The specific embodiment

As Fig. 1, Fig. 2, shown in Figure 3, automatic ejection chalk device comprises puts chalk holder 1, oblique side plate 2, get chalk shelves 3 and base plate 4, two blocks of oblique side plates 2 are set on this base plate 4, tiltedly has the ramp 21 that is an angle with base plate 4 on the side plate 2, the hinged chalk holder 1 of putting on oblique side plate 2, put chalk holder 1 and comprise a box plate 11, the setting that tilts of its ramp 21 that is landed in oblique side plate 2, on box plate 11, be provided with side plate 12 and constitute a chalk accommodation space with respect to oblique side plate 2 higher adjacent both sides, rear end with it, be provided with an end plate 13 at front end with respect to oblique side plate 2 low end box plates, the two ends of end plate 13 and the side plate of adjacency 12 are fixed, are provided with a slit 14 between end plate 13 lower limbs and the box plate 11 and roll out from this slit for chalk; On base plate 4, set firmly and get chalk shelves 3, get chalk shelves 3 and be positioned at the front in slit 14, an end of getting chalk shelves 3 is corresponding with an end in slit 14, establish a spacing between the other end in its other end and this slit 14, make slit 14 leave one section and do not got the part that chalk shelves 3 block, do not got in correspondence on the front end end plate 13 of putting chalk holder 1 of 14 positions, one section slit that chalk shelves 3 block and set firmly perpendicular chalk pressing plate 15, erect chalk pressing plate 15 and get the 3 adjacent settings of chalk shelves, the end face of the end of both adjacency is a cancave cambered surface, forms a perpendicular chalk space 5 with the butt end cross-sections match of chalk.During use, open the lid of putting on the chalk holder 16, with chalk 17 parallel slits 14 thereon, be placed in the chalk accommodation space, chalk is piled up near 14 places, slit under the effect of gravity, when needing to take out chalk 17, mention part that is positioned at jointed shaft one side of putting chalk holder 1 or the part that presses down the opposite side that is positioned at jointed shaft of putting chalk holder 1, make that putting chalk holder 1 rotates around jointed shaft, the ramp 21 that the height that makes the box plate 11 that is positioned at jointed shaft one side put chalk holder 1 lift to leave skew back plate 2 reduces gradually, it is concordant with the last end face of getting chalk shelves 3 or exceed a little to put the box plate 11 in the corresponding slit 14 of chalk holder 1 front end simultaneously, make a nearest chalk 17 of its middle distance slit roll out to put chalk holder and fall and get above the chalk shelves 3, the length of chalk 17 is greater than the length of getting chalk shelves 3, make an end of chalk 17 stretch out and get 3 one sections of chalk shelves, chalk 17 stretch out one correct be positioned at perpendicular chalk pressing plate 15 below, to be released when putting chalk holder 1, the perpendicular chalk pressing plate 15 that falls presses down the section of stretching out of chalk, makes chalk 17 hold up and places perpendicular chalk pressing plate and get the perpendicular chalk space 5 that chalk shelves 3 adjacent faces form.Simultaneously, put chalk holder 1 and put down, get chalk shelves 3 and block slit 14 and continue to tumble to stop other chalk 17.

Claims

1. one kind is ejected the chalk device automatically, comprise and put chalk holder, oblique side plate, get chalk shelves and base plate, oblique side plate is set on the base plate, it is characterized in that: tiltedly have the ramp that is an angle with base plate on the side plate, the hinged chalk holder of putting on oblique side plate, put chalk holder and comprise a box plate, the setting that tilts of its ramp that is located in oblique side plate, rear end with it the adjacent both sides higher with respect to oblique side plate are provided with side plate and constitute a chalk accommodation space on box plate, hanging down an end with respect to oblique side plate, the front end of box plate is provided with an end plate, the two ends of this end plate and the side plate of adjacency are fixed, are provided with a slit between end plate lower limb and the box plate and roll out from this slit for chalk; On base plate, be provided with and get the chalk shelves, get the front of chalk gear in the slit, an end of getting the chalk shelves is corresponding with an end in this slit, establish a spacing between the other end in its other end and this slit, make the slit leave one section and do not got the part that the chalk shelves block, do not got in correspondence on the front end end plate of putting chalk holder of one section gap position that the chalk shelves block and set firmly perpendicular chalk pressing plate, erect the chalk pressing plate and get the adjacent setting of chalk shelves, the end face of the end of both adjacency is a cancave cambered surface, forms a perpendicular chalk space with the butt end cross-sections match of chalk.