CN213734357U - Multifunctional chalk box - Google Patents

Abstract

The utility model relates to a multifunctional chalk box, which comprises a box body and a box cover; the box body comprises a first storage empty box, a second storage empty box and a chalk storage box, a push rod device is arranged at the bottom of the box body, and a box cover is buckled on the chalk storage box; the bottom of the first storage empty box is provided with a first protruding block, and the bottom of the second storage empty box is provided with a second protruding block; the chalk storage box is provided with an opening at the upper part, a steep slope is arranged in the chalk storage box, and a through hole is formed at the bottom of the steep slope; the top of the first protruding block is provided with a strip-shaped groove, a first cavity is arranged in the first protruding block, and the left end of the first protruding block is provided with an end cover; a second cavity is formed at the bottom of the chalk storage box and the bottom of the second protruding block, and a push rod return spring is arranged in the second cavity; a groove is arranged above the second protruding block, a stop block is arranged on the right side of the second protruding block, and a chalk sleeve device is arranged on the groove; can realize going out the pen automatically through pusher gear, convenient and fast can realize chalk and pen socket automatic assembly and to the protection of chalk through cooperation chalk cover device, and is high-efficient clean, still is equipped with on the box body and puts the thing space, has powerful the function of accomodating.

Description

Multifunctional chalk box

The technical field is as follows:

the utility model relates to a teaching aid, more specifically the utility model relates to a multifunctional chalk box that says so.

Background art:

the chalk box is a container for holding chalk, and is one of the most common articles in schools. The appearance of the chalk box is generally a rectangular parallelepiped or a cube, and the size is determined according to the size of the chalk contained therein. The chalk box on the market is usually paper, therefore causes a large amount of timber extravagant annually, and usually the chalk still does not use up the box just bad yet, makes the chalk fracture very easily and causes the waste, and the inside a lot of chalk dusts that can remain of chalk box simultaneously, and the mr can make dirty the clothes when taking the chalk.

Chinese patent CN201610584756.4 discloses an automatic chalk box in 2016.11.23, which comprises a box body, a chalk bin, a button, a movable rod, a return spring, a chalk dropping groove, a slideway, a baffle, a chalk dropping opening and chalk; the chalk bin is arranged at the upper part of the box body, the button, the movable rod, the reset spring, the pen falling groove and the pen falling opening are arranged at the middle position of the box body, and the slideway and the baffle are arranged at the lower part of the box body, so that the integral automatic chalk box is formed.

The automatic chalk box solves the problems of easy damage and waste of the paper chalk box, and is more convenient by adopting an automatic chalk discharging mode; however, when the structure is used, the chalk still needs to be taken by hands, the clothes are easily dirtied, and the chalk is unprotected after being taken out and is easily broken, so that the chalk is wasted.

The utility model has the following contents:

the utility model aims at prior art's weak point, a multi-functional chalk box that it is more convenient to use is provided, including box body, lid, push rod device and chalk cover device, can realize going out pen, chalk and chalk cover automatic assembly automatically, still have the chalk protection simultaneously and accomodate the function.

The technical solution of the utility model is as follows:

a multifunctional chalk box comprises a box body and a box cover; the box body comprises a first storage empty box, a second storage empty box and a chalk storage box, and the box cover is buckled on the chalk storage box; the first storage empty box is arranged at the left end of the chalk storage box, and a first protruding block is arranged at the bottom of the first storage empty box; the second storage empty box is arranged at the right end of the chalk storage box, and a second protruding block is arranged at the bottom of the second storage empty box; the chalk storage box is provided with an opening at the upper part, a steep slope is arranged in the chalk storage box, chalks are stacked on the steep slope, and a through hole is formed in the bottom of the steep slope; the top of the first protruding block is provided with a strip-shaped groove, a first cavity communicated with the strip-shaped groove is formed in the first protruding block, and the left end of the first protruding block is provided with an end cover matched with the first cavity; a second cavity is formed at the bottom of the chalk storage box and the bottom of the second protruding block, a push rod return spring is placed in the second cavity, and the left side of the second cavity is communicated with the first cavity; a push rod device is placed in a space formed by the first cavity and the second cavity; a groove is formed above the second protruding block, a stop block is arranged on the right side of the second protruding block, and a chalk sleeve device is placed on the groove.

Preferably, the through holes comprise a first through hole and a second through hole, and the diameters of the first through hole and the second through hole are larger than the diameter of the chalk.

Preferably, the push rod device comprises a first push rod and a second push rod, a square spring stop block is arranged at the contact end of the first push rod and a push rod return spring, and a cylindrical chalk stop block is arranged at the contact end of the second push rod and the chalk; the side length of the spring stop block is smaller than that of the second cavity, and the diameter of the chalk stop block is smaller than that of the first through hole and the second through hole at the bottom of the steep slope of the chalk storage box.

Preferably, the push rod device is provided with a first shifting block, the first shifting block extends out of the strip-shaped groove, and the width of the first shifting block is not larger than the width of the strip-shaped groove.

Preferably, the chalk sleeve device comprises a shell, an annular sliding block, a sleeve and a spring, wherein the right part of the sleeve is arranged in the shell, the left part of the sleeve extends out of the sleeve, the annular sliding block is sleeved between the sleeve and the right part of the shell and can move along the sleeve, and the spring is arranged between the annular sliding block and the closed end of the right part in the shell.

Preferably, the shell is provided with a first notch, a second notch and a third notch; the first notch extends from the left port of the shell to the rightmost end of the third notch; a first clamping block is arranged at the joint of the second notch and the first notch, and a second clamping block is arranged at the joint of the third notch and the first notch; the inner side of the closed end of the shell is provided with a threaded hole.

Preferably, the outer diameter of the right end of the sleeve is not larger than the inner diameter of the closed end of the shell, and threads corresponding to the threaded holes are arranged on the sleeve.

Preferably, the sleeve is of a conical cylinder structure and is provided with an opening, the opening extends from the left end of the sleeve to the right end of the sleeve, the width of the opening is gradually reduced from the left end of the sleeve to the right end of the sleeve, the taper of the inner side of the sleeve after the opening is combined is equal to the taper of chalk, and the outer diameter of the fine tail of the chalk is equal to the inner diameter of the starting point formed by the threads at the right end of the sleeve.

Preferably, the outer diameter of the annular sliding block is not larger than the inner diameter of the shell, and a second shifting block extending out of the shell is arranged on the annular sliding block; the width of the second shifting block is smaller than the width of the first notch, the second notch and the third notch.

Preferably, the annular slider is of a cone-shaped cylinder structure, the inner taper of the annular slider is the same as the outer taper of the sleeve, and the inner diameter of the annular slider gradually increases towards the side far away from the spring.

The beneficial effects of the utility model reside in that:

the utility model comprises a box body, a box cover, a push rod device and a chalk sleeve device, and can realize automatic pencil discharging through the push rod device, which is convenient and fast; the chalk sleeve device is matched to realize automatic assembly of the chalk and the chalk sleeve and protection of the chalk, so that the chalk is efficient and clean; the box body is also provided with an object placing space, and has a powerful storage function.

Description of the drawings:

the invention will be further explained with reference to the drawings:

fig. 1 is a schematic view of the overall appearance of the present invention.

Fig. 2 is the schematic view of the sectional structure of the box body of the present invention.

Fig. 3 is a schematic cross-sectional view of the matching of the push rod device and the pen cap device of the present invention.

Fig. 4 is a chalk assembly diagram showing the open state of the sleeve of the pen cap device according to the present invention.

Fig. 5 is a schematic view showing the assembled section of chalk in the open state of the sleeve of the pen cap device of the present invention.

Fig. 6 is a chalk assembly diagram of the present invention with the sleeve of the cap device in a closed state.

Fig. 7 is a schematic view showing the assembled section of the chalk in the closed state of the sleeve of the pen cap device of the present invention.

The specific implementation mode is as follows:

the following description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

A multifunctional chalk box is shown in figures 1 to 3 and comprises a box body 1 and a box cover 3; the chalk box comprises a box body 1 and a box cover 3, wherein the box body 1 comprises a first storage empty box 11, a second storage empty box 13 and a chalk storage box 12, a square bulge 31 is arranged on the box cover 3, and the size of the square bulge 31 corresponds to the upper opening of the chalk storage box 12, so that the box cover 3 can be buckled on the chalk storage box 12; the first storage empty box 11 is arranged at the left end of the chalk storage box 12, and a first protruding block 110 is arranged at the bottom of the first storage empty box 11; the second storage empty box 13 is arranged at the right end of the chalk storage box 12, and a second protruding block 131 is arranged at the bottom of the second storage empty box 13; the chalk storage box 12 top opening, inside are provided with the abrupt slope, have stacked chalk 7 on the abrupt slope, and the thin tail of chalk 7 towards the right-hand member, face chalk cover device 2 direction promptly, under the effect of gravity, after bottommost chalk 7 releases, stack other chalk 7 on it and can supply the position at the bottom according to the order, abrupt slope bottom position still is provided with the through-hole, the through-hole includes first through-hole 18 and second through-hole 16, and the diameter of first through-hole 18 and second through-hole 16 is greater than the diameter of chalk 7.

The top of the first protruding block 110 is provided with a strip-shaped groove 111, a first cavity 19 communicated with the strip-shaped groove 111 is arranged in the first protruding block, the left end of the first protruding block is provided with an end cover 4 matched with the first cavity 19, the end cover 4 is also provided with a lug 41, the width of the lug 41 is the same as that of the strip-shaped groove 111, and the end cover 4 can be embedded into the cavity; the bottom parts of the chalk storage box 12 and the second protruding block 131 are provided with a second cavity 17, a push rod return spring 6 is placed in the second cavity 17, and the left side of the second cavity 17 is communicated with the first cavity 19; the first cavity 19 and the second cavity 17 form a space in which the push rod device 5 is placed; a groove 15 is formed above the second protruding block 131, a stop block 14 is arranged on the right side of the second protruding block, the chalk sleeve device 2 is placed on the groove 15, the shape of the groove 15 corresponds to the outer contour of the chalk sleeve device 2, the groove 15 is arc-shaped in the example, the chalk sleeve device 2 can be placed stably, the geometric center of a sleeve 24 in the chalk sleeve device 2 is guaranteed to correspond to the geometric center of a chalk 7, meanwhile, the bottom of the chalk sleeve device 2 is enabled to lean against the stop block 14 to limit the chalk sleeve device 2, and the chalk 7 can be accurately pushed into the chalk sleeve device 2 under the action of a push rod device 5.

Preferably, the push rod device 5 comprises a first push rod 52 and a second push rod 53, a square spring stop 54 is arranged at the contact end of the first push rod 52 and the push rod return spring 6, the side length of the spring stop 54 is smaller than that of the second cavity 17, so that the first push rod 52 can move in the second cavity 17, and the push rod device 5 is reset through elastic rebound of the push rod return spring 6; the end, contacted with the chalk 7, of the second push rod 53 is provided with a cylindrical chalk stop block 55, the diameter of the chalk stop block 55 is smaller than the diameters of the first through hole 18 and the second through hole 16 at the steep slope bottom of the chalk storage box 12, so that the second push rod 53 can move in the first through hole 18 and the second through hole 16, and then the chalk 7 is pushed into the chalk sleeve device 2 through the chalk stop block 55.

Preferably, the push rod device 5 is provided with a first shifting block 51, the first shifting block 51 extends out of the strip-shaped groove 111, the width of the first shifting block 51 is not greater than the width of the strip-shaped groove 111, and when the first shifting block 51 is shifted by a finger, the push rod device 5 is pushed to move by shifting the first shifting block 51 to slide left and right in the strip-shaped groove 111.

Preferably, the chalk sleeve device 2, as shown in fig. 4 to fig. 7, includes a housing 23, an annular slider 21, a sleeve 24 and a spring 22, wherein the right portion of the sleeve 24 is mounted in the housing 23, the left portion of the sleeve 24 extends out of the sleeve 24, the annular slider 21 is sleeved between the sleeve 24 and the right portion of the housing 23, the annular slider 21 can move along the sleeve 24, and the spring 22 is disposed between the annular slider 21 and the closed end of the right portion in the housing 23; when the assembly is completed, the spring is always in a compressed state to ensure stable limit of the annular slider 21.

Preferably, the housing 23 is provided with a first notch 232, a second notch 235 and a third notch 236; wherein the first slot 232 extends all the way from the left side port of the housing 23 to the rightmost end of the third slot 236; a first clamping block 233 is arranged at the joint of the second notch 235 and the first notch 232, and a second clamping block 234 is arranged at the joint of the third notch 236 and the first notch 232; the inner side of the closed end of the shell 23 is provided with a threaded hole 231, the threaded hole 231 is an assembly structure of the shell 23 and the sleeve 24, and the threaded hole 231 is also provided with a taper corresponding to the taper because the right end of the sleeve 24 has a certain taper.

Preferably, the outer diameter of the right end of the sleeve 24 is not larger than the inner diameter of the closed end of the shell 23, and a thread 241 corresponding to the threaded hole 231 is arranged; the sleeve 24 is of a conical cylinder structure and is provided with an opening 242, the opening 242 extends from the left end of the sleeve 24 to the right end of the sleeve 24, the width of the opening 242 gradually decreases from the left end of the sleeve 24 to the right end of the sleeve 24, the taper of the inner side of the sleeve 24 after the opening 242 is combined is equal to the taper of the chalk 7, the outer diameter of the fine tail of the chalk 7 is equal to the inner diameter of the starting point formed by the thread 241 at the right end of the sleeve 24, and the chalk 7 can be limited in the sleeve 24.

When the sleeve 24 is assembled with the housing 23, the right end thread 241 of the sleeve 24 needs to be screwed into the threaded hole 231 of the housing 23, and since the width of the opening 242 of the sleeve 24 is gradually reduced from the left end of the sleeve 24 to the right end of the sleeve 24, the width of the opening at the right end thread 241 is already very small, and the closing or not of the opening 242 has a very small influence on the opening, it is ensured that the right end thread 241 of the sleeve 24 is smoothly assembled with the threaded hole 231 of the housing 23.

Preferably, the outer diameter of the annular sliding block 21 is not larger than the inner diameter of the shell 23, and the annular sliding block 21 is provided with a second shifting block 211 extending out of the shell 23; the width of the second toggle 211 is less than the width of the first, second, and third slots 232, 235, 236.

Preferably, the annular slider 21 is in a conical cylinder structure, the taper inside the annular slider 21 is the same as the taper outside the sleeve 24, and the inner diameter of the annular slider 21 gradually increases towards the side away from the spring 22.

The specific use mode is as follows:

when the chalk 7 needs to be used, firstly, the second shifting block 211 of the annular sliding block 21 slides into the second clamping block 234 at the third notch 236, the annular sliding block 21 is limited under the action of the elastic force of the spring 22, at this time, the chalk sleeve device 2 keeps the sleeve 24 in an opening state, and then the chalk sleeve device 2 is placed in the groove 15 and is close to the stop block 14; the first shifting block 51 is shifted to push the push rod device 5 to move, so that the chalk 7 at the bottom of the chalk storage box 12 is pushed to move, and the chalk 7 enters the sleeve 24 of the chalk sleeve device 2; after hands are released, the push rod device 5 is reset under the action of the push rod reset spring 6, and the chalk 7 in the chalk storage box 12 is replaced under the action of gravity; at this moment, the inner taper of the sleeve 24 is larger than that of the chalk 7, the tail end of the chalk 7 is limited at the starting point formed by the right end thread 241 on the inner side of the sleeve 24, then the second shifting block 211 is shifted to slide into the first fixture block 233 at the second notch 235, the opening 242 of the sleeve 24 is closed under the action of the annular slider 21, at this moment, the inner taper of the sleeve 24 is equal to that of the chalk 7, the inner side of the sleeve 24 is completely attached to the chalk 7, and the chalk 7 is clamped and fixed to write.

Claims (10)

1. A multifunctional chalk box comprises a box body (1) and a box cover (3); the method is characterized in that: the chalk box comprises a box body (1) and a box cover (3), wherein the box body comprises a first storage empty box (11), a second storage empty box (13) and a chalk storage box (12), and the box cover (3) is buckled on the chalk storage box (12); the first storage empty box (11) is arranged at the left end of the chalk storage box (12), and a first protruding block (110) is arranged at the bottom of the first storage empty box (11); the second storage empty box (13) is arranged at the right end of the chalk storage box (12), and a second protruding block (131) is arranged at the bottom of the second storage empty box (13); the chalk storage box (12) is provided with an opening at the upper part, a steep slope is arranged in the chalk storage box, chalks (7) are stacked on the steep slope, and a through hole is formed in the bottom of the steep slope;

a strip-shaped groove (111) is formed in the top of the first protruding block (110), a first cavity (19) communicated with the strip-shaped groove (111) is formed in the first protruding block, and an end cover (4) matched with the first cavity (19) is installed at the left end of the first protruding block; a second cavity (17) is formed in the bottom of the chalk storage box (12) and the bottom of the second protruding block (131), a push rod return spring (6) is placed in the second cavity (17), and the left side of the second cavity (17) is communicated with the first cavity (19); the first cavity (19) and the second cavity (17) form a space in which a push rod device (5) is placed; a groove (15) is formed above the second protruding block (131), a stop block (14) is arranged on the right side of the second protruding block, and a chalk sleeve device (2) is placed on the groove (15).

2. The multifunctional chalk case according to claim 1, characterized in that: the through holes comprise a first through hole (18) and a second through hole (16), and the diameters of the first through hole (18) and the second through hole (16) are larger than the diameter of the chalk (7).

3. The multifunctional chalk case according to claim 1, characterized in that: the push rod device (5) comprises a first push rod (52) and a second push rod (53), a square spring stop block (54) is arranged at the contact end of the first push rod (52) and the push rod return spring (6), and a cylindrical chalk stop block (55) is arranged at the contact end of the second push rod (53) and the chalk (7); the side length of the spring stop block (54) is smaller than that of the second cavity (17), and the diameter of the chalk stop block (55) is smaller than that of the first through hole (18) and the second through hole (16) at the bottom of the steep slope of the chalk storage box (12).

4. The multifunctional chalk case according to claim 3, characterized in that: be provided with first shifting block (51) on push rod device (5), bar groove (111) is stretched out in first shifting block (51), and the width of first shifting block (51) is not more than bar groove (111) width.

5. The multifunctional chalk case according to claim 1, characterized in that: chalk cover device (2) are including shell (23), annular slider (21), sleeve (24) and spring (22), and wherein sleeve (24) right part is installed in shell (23), and sleeve (24) left part stretches out outside sleeve (24), and the cover is equipped with annular slider (21) and can remove along sleeve (24) between sleeve (24) and shell (23) right part, and spring (22) are placed between annular slider (21) and the interior right part blind end of shell (23).

6. The multifunctional chalk case according to claim 5, characterized in that: the shell (23) is provided with a first notch (232), a second notch (235) and a third notch (236); wherein the first slot (232) extends from a left side port of the housing (23) all the way to a rightmost end of the third slot (236); a first clamping block (233) is arranged at the joint of the second notch (235) and the first notch (232), and a second clamping block (234) is arranged at the joint of the third notch (236) and the first notch (232); the inner side of the closed end of the shell (23) is provided with a threaded hole (231).

7. The multifunctional chalk case according to claim 6, characterized in that: the outer diameter of the right end of the sleeve (24) is not larger than the inner diameter of the closed end of the shell (23), and threads (241) corresponding to the threaded holes (231) are arranged.

8. The multifunctional chalk case according to claim 7, characterized in that: the chalk sleeve is characterized in that the sleeve (24) is of a cone-shaped structure and is provided with an opening (242), the opening (242) extends from the left end of the sleeve (24) to the right end of the sleeve (24), the width of the opening (242) is gradually reduced from the left end of the sleeve (24) to the right end of the sleeve (24), the taper of the inner side of the sleeve (24) is equal to that of chalk (7) after the opening (242) is combined, and the outer diameter of the fine tail of the chalk (7) is equal to the inner diameter of the starting point formed by threads (241) at the right end of the sleeve (24).

9. The multifunctional chalk case according to claim 6, characterized in that: the outer diameter of the annular sliding block (21) is not larger than the inner diameter of the shell (23), and a second shifting block (211) extending out of the shell (23) is arranged on the annular sliding block (21); the width of the second shifting block (211) is smaller than the widths of the first notch (232), the second notch (235) and the third notch (236).

10. The multifunctional chalk case according to claim 9, characterized in that: the annular sliding block (21) is of a conical cylinder structure, the inner side taper of the annular sliding block (21) is the same as the outer side taper of the sleeve (24), and the inner diameter of the annular sliding block (21) is gradually increased towards one side far away from the spring (22).

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