Novel chalk groove structure

Abstract

The utility model discloses a novel chalk groove structure which comprises a chalk groove mechanism, the chalk groove mechanism is arranged below a blackboard, the chalk groove mechanism comprises a fixed part and a movable part, the fixed part is fixedly connected below the blackboard, and the movable part is arranged on the fixed part in a crossing mode and connected with the fixed part through an elastic part. The fixing piece comprises a first fixing shell and a second fixing shell, and the first fixing shell and the second fixing shell are symmetrically arranged below the two ends of the blackboard in the length direction. The movable part comprises a first movable shell and a second movable shell; the first movable shell and the second movable shell are symmetrically arranged between the first fixed shell and the second fixed shell, one end of the first movable shell is placed in the first fixed shell, one end of the second movable shell is placed in the second fixed shell, the other end of the first movable shell and the other end of the second fixed shell are oppositely arranged, and the bottoms of the ends of the first movable shell and the second movable shell are connected through a hinge; elastic pieces are connected between the first fixed shell and the first movable shell and between the second fixed shell and the second movable shell.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of teaching equipment, especially a novel chalk groove structure. BACKGROUND

[0002] A large amount of chalk heads will be generated in the process of teachers writing on the blackboard, and the chalk heads will accumulate in the chalk groove under the blackboard. When the chalk heads in the chalk groove are too much, the chalk heads in the chalk groove need to be cleaned out one by one manually. Patent No. ZL202121023353.5 discloses a novel push-pull blackboard, which pushes the chalk heads in the chalk groove to one end of the chalk groove and collects them through the push-pull action of the push-pull blackboard. However, the chalk head collecting structure can only be applied to the horizontal push-pull blackboard and cannot be applied to other blackboard structures. Therefore, it is necessary to study a novel chalk groove structure to quickly collect and clean the fallen chalk heads to improve the convenience of teaching. SUMMARY

[0003] The utility model aims at above -mentioned problem, provides a novel chalk groove structure simple structure, convenient to use.

[0004] In order to achieve the above object, the technical scheme of the utility model is:

[0005] A novel chalk groove structure, comprising a chalk groove mechanism, the chalk groove mechanism is arranged below the blackboard, the chalk groove mechanism comprises a fixed part, a movable part, the fixed part is fixedly connected below the blackboard, the movable part is arranged on the fixed part and is connected with the fixed part through an elastic part;The fixed part comprises a first fixed shell and a second fixed shell, and the first fixed shell and the second fixed shell are symmetrically arranged below the two ends of the blackboard in the length direction;The movable part comprises a first movable shell and a second movable shell;The first movable shell and the second movable shell are symmetrically arranged between the first fixed shell and the second fixed shell, one end of the first movable shell is placed in the first fixed shell, one end of the second movable shell is placed in the second fixed shell, the other end is arranged opposite to the other end of the second fixed shell and the end heads of the two are connected through a hinge;The first fixed shell and the first movable shell are connected with the second fixed shell and the second movable shell through an elastic part.

[0006] Further, the length direction of the first fixed shell, the second fixed shell, the first movable shell and the second movable shell is consistent with the length direction of the blackboard;The vertical section of the first fixed shell, the second fixed shell, the first movable shell and the second movable shell is arranged in a U-shaped manner, and the width direction outer diameter of the first movable shell and the second movable shell is matched with the width direction inner diameter of the first fixed shell and the second fixed shell.

[0007] Further, the elastic member comprises a first positioning spring and a second positioning spring; the first fixed shell is provided with a first connecting lug at the bottom of one end close to the second fixed shell, the first movable shell is provided with a second connecting lug, the second connecting lug is located between the hinge and the first fixed shell and close to the first fixed shell, and the two ends of the first positioning spring are connected with the first connecting lug and the second connecting lug respectively; the second fixed shell is provided with a third connecting lug at the bottom of one end close to the first fixed shell, the second movable shell is provided with a fourth connecting lug, the fourth connecting lug is located between the hinge and the second fixed shell and close to the second fixed shell, and the two ends of the second positioning spring are connected with the third connecting lug and the fourth connecting lug respectively.

[0008] Further, the first fixed shell and the second fixed shell are equal in length, the first movable shell and the second movable shell are equal in length, and the length of the first fixed shell is less than one half of the length of the first movable shell; the second connecting lug is arranged at the center of the first movable shell and deviates to the side of the first fixed shell, and the fourth connecting lug is arranged at the center of the second movable shell and deviates to the side of the second fixed shell.

[0009] Further, when the hinge is in a horizontal unfolding state, the first movable shell and the second movable shell are arranged horizontally and stably placed on the first fixed shell and the second fixed shell under the pulling action of the first positioning spring and the second positioning spring; one end of the first movable shell close to the first fixed shell is located in the first fixed shell or flush with the end of the first fixed shell, and one end of the second movable shell close to the second fixed shell is located in the second fixed shell or flush with the end of the second fixed shell.

[0010] Further, one end of the first movable shell close to the second movable shell is provided with a fifth connecting lug, one end of the second movable shell close to the first movable shell is provided with a sixth connecting lug, and a pulling spring is connected between the fifth connecting lug and the sixth connecting lug; when the hinge is in a horizontal unfolding state, the pulling spring is in a stretched state.

[0011] Further, one end of the first movable shell close to the second movable shell is provided with a fifth connecting lug, one end of the second movable shell close to the first movable shell is provided with a sixth connecting lug, and a pulling spring is connected between the fifth connecting lug and the sixth connecting lug; when the hinge is in a horizontal unfolding state, the pulling spring is in a stretched state.

[0012] Further, the bottom of one end of the first fixed shell away from the second fixed shell and the bottom of one end of the second fixed shell away from the first fixed shell are provided with a material receiving box, and the material receiving box is detachably connected with a fixed member or a building wall.

[0013] Further, the first fixed shell and the second fixed shell are fixedly connected to the outer side of the bottom of the blackboard or the building wall below the blackboard.

[0014] Further, the end bottom of the first movable shell placed in the first fixed shell and the end bottom of the second movable shell placed in the second fixed shell are all provided with a rounded corner structure.

[0015] Compared with the prior art, the utility model has the advantages and positive effects that:

[0016] The utility model discloses a chalk groove structure is provided, which comprises a fixed part and a movable part, wherein the fixed part is fixedly installed below a blackboard, and the movable part is arranged on the fixed part, the fixed part comprises a first fixed shell and a second fixed shell, and the movable part comprises a first movable shell and a second movable shell, the first movable shell and the second movable shell are respectively arranged in the first fixed shell and the second fixed shell, and the first movable shell and the second movable shell are connected with each other through a elastic part. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0018] Figure 1 It is the structural schematic diagram of the utility model;

[0019] Figure 2 It is the use state schematic diagram of chalk groove mechanism;

[0020] Figure 3 It is the cleaning state schematic diagram of chalk groove mechanism;

[0021] Figure 4 It is the overhead structure diagram of chalk groove mechanism;

[0022] Figure 5 for Figure 4 AA sectional view of the structure;

[0023] Figure 6 A diagram illustrating the collection action of the first active shell. Figure 1 ;

[0024] Figure 7 A diagram illustrating the collection action of the first active shell. Figure 2 ;

[0025] Figure 8 A diagram illustrating the collection action of the first active shell. Figure 3 ;

[0026] Figure 9 for Figure 4 BB cross-sectional structural diagram. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art to all other embodiments obtained without creative effort should be included within the protection scope of the present utility model.

[0028] like Figures 1 to 9 As shown, this embodiment discloses a novel chalk slot structure, including a chalk slot mechanism, which is disposed below the blackboard 6;

[0029] The chalk tray mechanism includes a fixed component 1, a movable component 2, and an elastic component 3. The fixed component 1 is fixedly connected to the building wall below the blackboard 6, and the movable component 2 straddles the fixed component 1 and is connected to the fixed component 1 through the elastic component 3.

[0030] The fixing component 1 includes a first fixing shell 11 and a second fixing shell 12, which are fixedly connected to the building wall below the blackboard 6. The first fixing shell 11 and the second fixing shell 12 are of equal length and symmetrically arranged below both ends of the blackboard 6 along its length. The length of the first fixing shell 11 and the second fixing shell 12 is consistent with the length of the blackboard 6. The vertical cross-section of the first fixing shell 11 and the second fixing shell 12 is U-shaped.

[0031] The movable part 2 comprises a first movable shell 21 and a second movable shell 22. The first movable shell 21 and the second movable shell 22 are arranged symmetrically and equidistantly between the first fixed shell 11 and the second fixed shell 12. The length direction of the first movable shell 21 and the second movable shell 22 is consistent with the length direction of the blackboard 6. The vertical section of the first movable shell 21 and the second movable shell 22 is arranged in a U shape, and the width direction outer diameter of the first movable shell 21 and the second movable shell 22 is matched with the width direction inner diameter of the first fixed shell 11 and the second fixed shell 12. The left end of the first movable shell 21 is placed in the first fixed shell 11, and the length of the first fixed shell 11 is one third of the length of the first movable shell 21. The right end of the second movable shell 22 is placed in the second fixed shell 12, and the length of the second fixed shell 12 is one third of the length of the second movable shell 22. The right end of the first movable shell 21 is arranged opposite to the left end of the second fixed shell 22, and the end head bottom of the two is connected by a hinge 23. The end head bottom of the left end of the first movable shell 21 and the end head bottom of the right end of the second movable shell 22 are arranged in a rounded corner structure to reduce the frictional resistance caused by the movable shell to the fixed shell when the movable shell is moved.

[0032] The outer side wall of the right end of the first movable shell 21 is provided with a first mounting part, and the outer side wall of the left end of the second movable shell 22 is provided with a second mounting part. A handle rope 7 is connected between the first mounting part and the second mounting part to facilitate lifting the first movable shell 21 and the second movable shell 22.

[0033] The elastic part 3 comprises a first positioning spring 31 and a second positioning spring 32. The right end bottom of the first fixed shell 11 is integrally formed with a first connecting lug 111, and the bottom of the first movable shell 21 is provided with a second connecting lug 211. The second connecting lug 211 is located between the hinge 23 and the first fixed shell 11 and is arranged on the left side of the center position of the first movable shell 21. The two ends of the first positioning spring 31 are respectively connected with the first connecting lug 111 and the second connecting lug 211. The left end bottom of the second fixed shell 12 is integrally formed with a third connecting lug 121, and the bottom of the second movable shell 22 is provided with a fourth connecting lug 221. The fourth connecting lug 221 is located between the hinge 23 and the second fixed shell 12 and is arranged on the right side of the center position of the second movable shell 22. The two ends of the second positioning spring 32 are respectively connected with the third connecting lug 121 and the fourth connecting lug 221.

[0034] The left end bottom of the first fixed shell 11 and the right end bottom of the second fixed shell 12 are provided with a material receiving box 4. The material receiving box 4 is detachably connected with the building wall. The material receiving box 4 can also be directly placed on a placing plate fixed to the building wall. After collecting the chalk heads, the material receiving box 4 can be detached and the chalk heads can be poured out.

[0035] As Figure 2 , Figure 4 ,Figure 5 As shown, the chalk slot mechanism is in a horizontal unfolded state during normal use, the first movable shell 21 and the second movable shell 22 are horizontally arranged and stably placed on the first fixed shell 11 and the second fixed shell 12 under the pulling action of the first positioning spring 31 and the second positioning spring 32; at this time, the left end of the first movable shell 21 is flush with the left end of the first fixed shell 11, and the right end of the second movable shell 22 is flush with the right end of the second fixed shell 12, and the chalk head 8 falling from the chalk will fall into the first movable shell 21 and the second movable shell 22;

[0036] As shown in Figure 3 , Figure 6 , Figure 7 , Figure 8 shown, the number of chalk heads 8 in the first movable shell 21 and the second movable shell 22 is large, and when cleaning is needed, the lifting handle rope 7 is pulled to lift the right end of the first movable shell 21 and the left end of the second movable shell 22 together, at this time, the hinge 23 slowly folds as the lifting height increases (as shown in Figure 3 , the left end of the first movable shell 21 is abutted on the inner end wall of the first fixed shell 11 under the pulling action of the first positioning spring 31 and gradually slides to the right as the lifting height of the right end of the first movable shell 21 increases; similarly, the right end of the second movable shell 22 is abutted in the second fixed shell 12 under the pulling action of the second positioning spring 32 and gradually slides to the left; when the right end of the first movable shell 21 and the left end of the second movable shell 22 are lifted to a certain degree, the first movable shell 21 and the second movable shell 22 are in an inclined state, and the chalk heads 8 in the first movable shell 21 and the second movable shell 22 slide along the inclined inner wall of the first movable shell 21 and the second movable shell 22 under the action of gravity and fall into the first fixed shell 11 and the second fixed shell 12 (as shown in Figure 6 , Figure 7 );

[0037] Then, the lifting handle rope 7 is loosened, and the first movable shell 21 and the second movable shell 22 are reset to a horizontal placement state under the action of gravity and the positioning spring, during the resetting process, the left end of the first movable shell 21 slides to the left in the first fixed shell 11, and the right end of the second movable shell 22 slides to the right in the second fixed shell 12, pushing the chalk heads 8 falling in the first fixed shell 11 and the second fixed shell 12 out of the end (as shown in Figure 8 ), and collecting the chalk heads 8 falling below the left end of the first fixed shell 11 and below the right end of the second fixed shell 12 into the receiving box 4 for collection, and finally completing the rapid collection operation of the chalk heads 8.

[0038] The first movable shell 21 is integrally formed with a fifth connecting lug 212 at the bottom, and the fifth connecting lug 212 is arranged at the left side of the hinge 23; the second movable shell 22 is integrally formed with a sixth connecting lug 222 at the bottom, and the sixth connecting lug 222 is arranged at the right side of the hinge 23; the fifth connecting lug 121 and the sixth connecting lug 222 are connected with a pulling spring 5; when the hinge 23 is in the horizontal unfolded state, the pulling spring 5 is in the stretched state.

[0039] In the process of pulling the handle rope to lift the right end of the first movable shell and the left end of the second movable shell together, the elastic force of the pulling spring can generate a pulling force to make the bottom of the first movable shell and the bottom of the second movable shell relatively close, and the relative closeness of the bottom of the first movable shell and the bottom of the second movable shell can provide a lifting force to the right end of the first movable shell and the left end of the second movable shell; the lifting force can reduce the pulling force of the handle rope, assist people to lift the right end of the first movable shell and the left end of the second movable shell, and improve the operation convenience of the chalk groove mechanism.

[0040] The chalk groove structure in the utility model has novel design, simple structure, can realize quick collection and cleaning operation of chalk heads, and can realize collection operation of chalk heads without action cooperation with blackboards, and can be applied to blackboards of any structure, improves the use universality of the chalk groove structure, and brings certain convenience to teaching work.

Claims

1. A new chalk tray structure comprising a chalk tray mechanism, the chalk tray mechanism being provided below a blackboard, characterized in that: The chalk groove mechanism comprises a fixed part and a movable part, the fixed part is fixedly connected below the blackboard, and the movable part is arranged on the fixed part and connected with the fixed part through an elastic part; the fixed part comprises a first fixed shell and a second fixed shell, the first fixed shell and the second fixed shell are symmetrically arranged below both ends of the blackboard in the length direction; the movable part comprises a first movable shell and a second movable shell; the first movable shell and the second movable shell are symmetrically arranged between the first fixed shell and the second fixed shell, one end of the first movable shell is arranged in the first fixed shell, one end of the second movable shell is arranged in the second fixed shell, and the other end of the second movable shell is arranged opposite to the other end of the second fixed shell, and the bottom of the end of the first movable shell and the bottom of the end of the second movable shell are connected through a hinge; the first fixed shell, the second fixed shell, the first movable shell and the second movable shell are connected with the elastic part.

2. The chalk tray structure of claim 1, wherein: The length direction of the first fixed shell, the second fixed shell, the first movable shell and the second movable shell is consistent with the length direction of the blackboard; the vertical section of the first fixed shell, the second fixed shell, the first movable shell and the second movable shell is arranged in a U-shaped manner, and the width direction outer diameter of the first movable shell and the second movable shell is matched with the width direction inner diameter of the first fixed shell and the second fixed shell.

3. The new chalk tray structure according to claim 1, characterized in that: The elastic part comprises a first positioning spring and a second positioning spring; the first fixed shell is provided with a first connecting lug at the bottom of one end close to the second fixed shell, the first movable shell is provided with a second connecting lug at the bottom, the second connecting lug is located between the hinge and the first fixed shell, the second connecting lug is arranged close to the first fixed shell, and the two ends of the first positioning spring are connected with the first connecting lug and the second connecting lug respectively; the second fixed shell is provided with a third connecting lug at the bottom of one end close to the first fixed shell, the second movable shell is provided with a fourth connecting lug at the bottom, the fourth connecting lug is located between the hinge and the second fixed shell, the fourth connecting lug is arranged close to the second fixed shell, and the two ends of the second positioning spring are connected with the third connecting lug and the fourth connecting lug respectively.

4. The new chalk tray structure according to claim 3, characterized in that: The first fixed shell and the second fixed shell are arranged in equal length, the first movable shell and the second movable shell are arranged in equal length, and the length of the first fixed shell is less than one half of the length of the first movable shell; the second connecting lug is arranged at the center of the first movable shell and deviates to one side of the first fixed shell, and the fourth connecting lug is arranged at the center of the second movable shell and deviates to one side of the second fixed shell.

5. The new chalk tray structure according to claim 3, characterized in that: When the hinge is in a horizontal unfolding state, the first movable shell and the second movable shell are arranged horizontally and stably on the first fixed shell and the second fixed shell under the pulling action of the first positioning spring and the second positioning spring; one end of the first movable shell close to the first fixed shell is located in the first fixed shell or flush with the end of the first fixed shell, and one end of the second movable shell close to the second fixed shell is located in the second fixed shell or flush with the end of the second fixed shell.

6. The new chalk tray structure according to claim 1, characterized in that: One end of the first movable shell close to the second movable shell is provided with a fifth connecting lug at the bottom, one end of the second movable shell close to the first movable shell is provided with a sixth connecting lug at the bottom, and a pulling spring is connected between the fifth connecting lug and the sixth connecting lug; when the hinge is in a horizontal unfolding state, the pulling spring is in a stretched state.

7. The new chalk tray structure according to claim 1, characterized in that: The first movable shell is provided with a first mounting part near the outer side wall of one end of the second movable shell, the second movable shell is provided with a second mounting part near the outer side wall of one end of the first movable shell, and a handle rope is connected between the first mounting part and the second mounting part.

8. The new chalk tray structure according to claim 1, characterized in that: The bottom of one end of the first fixed shell away from the second fixed shell and the bottom of one end of the second fixed shell away from the first fixed shell are provided with material receiving boxes which are detachably connected with the fixing parts or the building wall.

9. The new chalk tray structure according to claim 1, characterized in that: The first fixed shell body and the second fixed shell body are fixedly connected to the building wall outside the bottom end of the blackboard or below the blackboard.

10. The new chalk tray structure according to claim 1, characterized in that: The end bottom of the first movable shell placed in the first fixed shell and the end bottom of the second movable shell placed in the second fixed shell are provided with rounded corner structures.

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