CN220329370U

CN220329370U - Blackboard erasing device

Info

Publication number: CN220329370U
Application number: CN202321205453.9U
Authority: CN
Inventors: 罗俊昊; 罗昊弦; 邹昕峰
Original assignee: Beijing Institute of Technology Zhuhai
Current assignee: Beijing Institute of Technology Zhuhai
Priority date: 2023-05-17
Filing date: 2023-05-17
Publication date: 2024-01-12
Anticipated expiration: 2033-05-17

Abstract

The utility model discloses a blackboard wiping device, which belongs to the technical field of teaching aids, and comprises a handheld part, a clamping mechanism and a water spraying mechanism, wherein the water spraying mechanism is arranged on the handheld part, a cavity for containing liquid is formed in the handheld part, at least one part of the water spraying mechanism is positioned in the cavity, and a nozzle of the water spraying mechanism is communicated with the cavity; at least one part of the clamping mechanism is arranged at the bottom of the handheld part, the clamping mechanism is provided with a telescopic clamping position, and a nozzle of the water spraying mechanism faces the clamping position; the nozzle of the water spraying mechanism is communicated with the cavity; the water spraying mechanism is used for sucking liquid in the cavity, and the nozzle of the water spraying mechanism is used for spraying water to the blackboard; the clamping position is used for accommodating blackboard erasers with different sizes, and the nozzle of the water spraying mechanism faces the clamping position, so that the blackboard erasing device can wipe and spray water towards the blackboard erasers at the clamping position at the same time, and dust around the blackboard is reduced; the blackboard erasing device and the blackboard eraser are in split type design, so that the adaptability of the blackboard erasing device is improved.

Description

Blackboard erasing device

Technical Field

The utility model belongs to the technical field of teaching aids, and particularly relates to a blackboard wiping device.

Background

In teaching, a teacher often needs to wipe a blackboard eraser, and the blackboard eraser cleans handwriting on a blackboard by wiping the blackboard; during the process of wiping the blackboard, more dust is generated when chalk writing is wiped, so that a teacher sucks the dust into the body, and the body feels uncomfortable or causes harm.

In the existing blackboard erasing structure, the water spraying mechanism and the blackboard erasing mechanism are generally designed integrally, for example, the structure is as follows: 201120482341.9; the device can spray water to the blackboard so as to reduce dust, but cannot adapt to blackboard erasers with different sizes; moreover, the blackboard eraser cannot be used any more after being damaged, and the adaptability is poor.

Disclosure of Invention

The utility model aims to provide a blackboard erasing device which can reduce dust and clamp blackboard erasers with different sizes, and has strong adaptability.

The technical scheme is as follows:

the blackboard wiping device comprises a handheld part, a clamping mechanism and a water spraying mechanism, wherein the water spraying mechanism is arranged on the handheld part, a cavity for containing liquid is formed in the handheld part, at least one part of the water spraying mechanism is positioned in the cavity, and a nozzle of the water spraying mechanism is communicated with the cavity;

at least a part of the clamping mechanism is arranged at the bottom of the handheld part, the clamping mechanism is provided with a telescopic clamping position, and the nozzle of the water spraying mechanism faces to the clamping position.

In one embodiment, the clamping mechanism comprises a bottom plate, an elastic piece, a first clamping piece and a second clamping piece, wherein the bottom plate is fixed at the bottom of the handheld part;

the first clamping piece is arranged at the first end of the elastic piece, the second end of the elastic piece is arranged at one side of the bottom plate, and the second clamping piece is arranged at the other side of the bottom plate; the first clamping piece and the second clamping piece are oppositely arranged, and a clamping position is formed between the first clamping piece and the second clamping piece.

In one embodiment, the first clamping member comprises a first connecting plate and a first side plate, the outer side of the bottom plate is provided with a guide groove, and at least one part of the first connecting plate is positioned in the guide groove and is in sliding fit with the guide groove; the first connecting plate is fixed with the first side plate.

In one embodiment, the second clamping member comprises a second connecting plate and a second side plate, the elastic member comprises a first spring and a second spring, two ends of the first spring are respectively connected with one side of the first side plate and one side of the bottom plate, and two ends of the second spring are respectively connected with the second side plate and the other side of the bottom plate; at least a part of the second connecting plate is positioned in the guide groove and is in sliding fit with the guide groove, and the second connecting plate is fixed with the second side plate.

In one embodiment, a clamping rod is arranged at the top of the handheld portion, the clamping rod is perpendicular to the upper end face of the handheld portion, and the clamping rod is arranged close to the water spraying mechanism.

In one embodiment, one end of the clamping rod gradually decreases from one end of the clamping rod to the other end, and the maximum end of the clamping rod is far away from the handheld portion.

In one embodiment, the first side wall or the second side wall of the hand-hold part is provided with a concave part, the concave part is arc-shaped, and the concave part is provided with a strip-shaped dent.

In one embodiment, the water spraying mechanism is mounted on a third side wall of the hand-held part;

the hand-held part comprises a sealing element and an inlet, the inlet is positioned on the fourth side wall of the hand-held part, the sealing element is matched with the fourth side wall of the hand-held part and is used for sealing the inlet;

the first side wall is arranged opposite to the second side wall, and the third side wall is arranged opposite to the fourth side wall.

In one embodiment, the water spraying mechanism comprises a base, a pressing part, a first connecting pipe, a piston and a pressure spring, wherein a pressing groove is formed in the circumferential direction of the base, the pressing part is connected with the top of the piston, and at least one part of the pressing part is positioned in the pressing groove and is in movable fit with the base;

the channel of the piston is communicated with the nozzle, the bottom of the piston is sleeved outside the first connecting pipe and is in sliding fit with the outer wall of the first connecting pipe, and at least one part of the first connecting pipe is positioned in the cavity; the pressure spring is sleeved outside the first connecting pipe, the top of the pressure spring is in contact with the bottom of the piston, and the bottom of the pressure spring is installed in the base.

In one embodiment, at least a portion of the handpiece is made of a transparent material.

The technical scheme provided by the utility model has the following advantages and effects:

1. the hand-held part is internally provided with a cavity for containing liquid, at least one part of the water spraying mechanism is positioned in the cavity, and a nozzle of the water spraying mechanism is communicated with the cavity; the water spraying mechanism is used for sucking liquid in the cavity, and the nozzle of the water spraying mechanism is used for spraying water to the blackboard; at least one part of the clamping mechanism is arranged at the bottom of the handheld part, the clamping mechanism is provided with a telescopic clamping position which is used for accommodating blackboard erasers with different sizes, and the nozzle of the water spraying mechanism faces the clamping position, so that the blackboard erasing device can wipe and spray water towards the blackboard erasers at the clamping position at the same time, and the effect of reducing dust around the blackboard is improved; the blackboard eraser with different sizes is clamped by the clamping mechanism, and the blackboard erasing device and the blackboard eraser are in split type design, so that the adaptability of the blackboard erasing device is improved.

2. The first clamping piece and the second clamping piece are arranged on the floor and form clamping positions, the first clamping piece is arranged on the bottom plate through the elastic piece, the first clamping piece and the second clamping piece clamp the blackboard eraser through the elastic piece, the size of the clamping positions can be adjusted through the elasticity of the elastic piece, and therefore the clamping positions have the function of accommodating the blackboard erasers with different sizes.

3. At least a portion of the first connecting plate is located in the guide groove and is in sliding fit with the guide groove, the moving track of the first connecting plate can be further limited, and the first connecting plate is fixed with the first side plate, so that the stability of the first side plate in moving is improved, and the stability of the blackboard eraser clamped by the clamping mechanism is improved.

4. The first side plate is connected with one side of the bottom plate through the first spring, the second side plate is connected with the other side of the bottom plate through the second spring, a moving path which is far away from each other or is close to each other is arranged between the first side plate and the second side plate, and the first side plate and the second side plate are moved simultaneously when the blackboard eraser is clamped, so that the flexibility of the clamping device for clamping the blackboard eraser is further improved.

5. The clamping rod is arranged at the top of the handheld part, a user holds the handheld part by hands and clamps the clamping rod by using the index finger and the middle finger, and the clamping rod is positioned in the finger slit, so that the user can conveniently apply acting force to the blackboard wiping device to wipe the blackboard, and the stability of holding the handheld part by hands is improved; in addition, the clamping rod is arranged close to the water spraying mechanism, so that acting force can be applied to the water spraying mechanism under the condition that fingers clamp the handheld rod, the blackboard can be cleaned while the water spraying mechanism is pressed to spray water, and the convenience in using the blackboard cleaning device is improved.

6. One end of the clamping rod is gradually reduced from one end of the clamping rod to the other end of the clamping rod, the maximum end of the clamping rod is far away from the handheld part, so that fingers can be abutted against the back of the hand after clamping the clamping rod, and the stability of the handheld part held by a user is further improved.

7. The concave part is arranged on the side wall of the handheld part and is arc-shaped, so that the comfort of a user holding the handheld part can be improved, the friction force between fingers and the handheld part can be increased by the dent of the concave part, and the stability of the user holding the handheld part is further improved.

8. The user holds the two sides of the hand holding part and uses fingers to act on the water spraying mechanism, so that the convenience of using the blackboard erasing device is improved; moreover, the liquid enters the cavity through the inlet, is matched with the fourth side wall of the handheld part through the sealing piece, seals the inlet, and can be replenished at any time after the liquid is used up, so that the blackboard erasing device can be repeatedly used.

9. The pressing part is pressed by fingers, the piston is pressed, the piston discharges the gas in the seat body, the liquid is pumped into the piston, and the piston is pressed again, so that the liquid is sprayed out by the piston, the liquid is sprayed out by the blackboard erasing device, and the dust on the periphery is reduced.

10. At least one part of the hand-held part is made of transparent materials, so that the liquid dosage in the cavity can be observed, and the user can conveniently supplement the liquid in time.

Drawings

Fig. 1 is a schematic view of a blackboard erasing device according to an embodiment of the present utility model.

Fig. 2 is a schematic diagram of a blackboard erasing device according to an embodiment of the present utility model.

Fig. 3 is a schematic view of a blackboard erasing device according to an embodiment of the present utility model.

FIG. 4 is an exploded view of a blackboard erasing device according to an embodiment of the present utility model

Fig. 5 is a cross-sectional view of a water spray mechanism in an embodiment of the utility model.

Reference numerals illustrate:

100. a blackboard erasing device; 1. a hand-held part; 11. a recessed portion; 12. a seal; 13. a first sidewall; 14. a second sidewall; 15. a third sidewall; 16. a fourth sidewall; 2. a clamping mechanism; 21. a bottom plate; 211. a guide groove; 22. an elastic member; 221. a first spring, 222, a second spring; 23. a first clamping member; 231. a first connection plate; 232. a first side plate; 24. a second clamping member; 241. a second connecting plate; 242. a second side plate; 25. a clamping position; 3. a water spraying mechanism; 31. a nozzle; 32. a base; 321. a pressing groove; 33. a pressing part; 34. a first connection pipe; 35. a second connection pipe; 36. a piston; 37. a pressure spring; 4. and a clamping rod.

Detailed Description

In order that the utility model may be readily understood, a more particular description of specific embodiments thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

As used herein, the terms "first and second …" are used merely to distinguish between names and not to represent a particular number or order unless otherwise specified or defined.

The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items, unless specifically stated or otherwise defined.

The term "fixed" or "connected" as used herein may be directly fixed or connected to an element, or indirectly fixed or connected to an element.

As shown in fig. 1 to 3, a blackboard erasing device 100 includes a hand-held part 1, a holding mechanism 2 and a water spraying mechanism 3, the water spraying mechanism 3 is mounted on the hand-held part 1, the hand-held part 1 is provided with a chamber for containing liquid, at least a part of the water spraying mechanism 3 is positioned in the chamber, and a nozzle 31 of the water spraying mechanism 3 is communicated with the chamber; at least a part of the clamping mechanism 2 is arranged at the bottom of the hand-held part 1, and the clamping mechanism 2 is provided with a telescopic clamping position 25, and the nozzle 31 of the water spraying mechanism 3 faces the clamping position 25. The nozzle 31 of the water spraying mechanism 3 is communicated with the chamber; the water spraying mechanism 3 is used for sucking the liquid in the cavity, and the nozzle 31 of the water spraying mechanism 3 is used for spraying water to the blackboard; at least a part of the clamping mechanism 2 is arranged at the bottom of the hand holding part 1, the clamping mechanism 2 is provided with a telescopic clamping position 25, the clamping position 25 is used for accommodating blackboard erasers with different sizes, the nozzle 31 of the water spraying mechanism 3 faces the clamping position 25, the blackboard erasing device 100 can wipe and spray water towards the blackboard erasers of the clamping position 25, and the effect of reducing dust around the blackboard is improved. The blackboard eraser with different sizes is clamped by the clamping mechanism 2, and the blackboard erasing device 100 and the blackboard eraser are in a split type design, so that the adaptability of the blackboard erasing device 100 can be improved.

The blackboard erasing device 100 is used according to the following principle: the user holds the hand-held portion 1 by hand and places the blackboard eraser in the holding position 25 so that the holding mechanism 2 holds the blackboard eraser; in the process of wiping the blackboard, the water spraying mechanism 3 is pressed by a finger, so that dust around the blackboard is reduced while the blackboard is wiped.

As shown in fig. 2 and 3, the clamping mechanism 2 includes a base plate 21, an elastic member 22, a first clamping member 23, and a second clamping member 24, and the base plate 21 is fixed to the bottom of the hand-held portion 1; the first clamping member 23 is mounted at a first end of the elastic member 22, a second end of the elastic member 22 is mounted at one side of the bottom plate 21, and the second clamping member 24 is mounted at the other side of the bottom plate 21; the first clamping piece 23 and the second clamping piece 24 are arranged opposite to each other, and a clamping position 25 is formed between the first clamping piece 23 and the second clamping piece 24. Is mounted on the floor 21 by means of a first clamping member 23 and a second clamping member 24, and forms a clamping position 25; the first clamping piece 23 is arranged on the bottom plate 21 through the elastic piece 22, the first clamping piece 23 and the second clamping piece 24 clamp the blackboard eraser through the elastic piece 22, and the size of the clamping position 25 can be adjusted through the elastic force of the elastic piece 22, so that the clamping position 25 has the function of accommodating the blackboard erasers with different sizes, and the blackboard eraser clamping device is simple in structure and strong in adaptability.

As shown in fig. 2 and 3, the first clamping member 23 includes a first connecting plate 231 and a first side plate 232, the outer side of the bottom plate 21 has a guide groove 211, and at least a portion of the first connecting plate 231 is located in the guide groove 211 and slidably cooperates with the guide groove 211; the first connection plate 231 is fixed to the first side plate 232. At least a portion of the first connecting plate 231 is located in the guide slot 211 and is in sliding fit with the guide slot 211, so that the movement track of the first connecting plate 231 can be further limited, and the stability of the first connecting plate 231 is improved; and the first connecting plate 231 is fixed with the first side plate 232, so that the stability of the first side plate 232 in moving is improved, and the stability of the clamping mechanism 2 for clamping the blackboard eraser is improved.

As shown in fig. 2 and 3, the second clamping member 24 includes a second connection plate 241 and a second side plate 242, the elastic member 22 includes a first spring 221 and a second spring 222, both ends of the first spring 221 are respectively connected with one side of the first side plate 232 and one side of the bottom plate 21, and both ends of the second spring 222 are respectively connected with the second side plate 242 and the other side of the bottom plate 21; at least a portion of the second connecting plate 241 is located in the guide groove 211 and slidingly engages with the guide groove 211, and the second connecting plate 241 is fixed to the second side plate 242. In the present embodiment, the guide groove 211 penetrates through two sides of the bottom plate 21, the first side plate 232 is connected with one side of the bottom plate 21 through the first spring 221, and the second side plate 242 is connected with the other side of the bottom plate 21 through the second spring 222; the first side plate 232 and the second side plate 242 have a moving path therebetween that is far from each other or near each other; when the blackboard eraser is clamped, the first side plate 232 and the second side plate 242 are moved simultaneously, so that the flexibility of clamping the blackboard eraser by the clamping device 2 is further improved.

As shown in fig. 1 and 3, the top of the hand-held portion 1 is provided with a clamping rod 4, the clamping rod 4 is perpendicular to the upper end surface of the hand-held portion 1, and the clamping rod 4 is disposed close to the water spraying mechanism 3. The clamping rod 4 is arranged at the top of the hand-held part 1, and a user holds the hand-held part 1 by hands; and the clamping rod 4 is clamped by the index finger and the middle finger, and the clamping rod 4 is positioned in the finger slit, so that a user can conveniently apply acting force to the blackboard wiping device 100 to wipe the blackboard, and the stability of holding the handheld part 1 by the hand is improved. Further, when the grip lever 4 is provided close to the water spraying mechanism 3 and the hand lever 4 is gripped by a finger, the force can be applied to the water spraying mechanism 3, and the blackboard can be cleaned while the water spraying mechanism 3 is pressed to spray water, thereby improving the convenience in using the blackboard erasing apparatus 100.

As shown in fig. 4, one end of the holding rod 4 gradually decreases from one end of the holding rod 4 to the other end, and the maximum end of the holding rod 4 is disposed away from the hand-held portion 1; after the fingers grip the grip lever 4, the maximum end of the grip lever 4 is brought into contact with the back of the hand, and the stability of the user holding the hand grip 1 can be further improved.

In addition, the first side wall 13 or the second side wall 14 of the hand-held part 1 is provided with a concave part 11, the concave part 11 is arc-shaped, and the concave part 11 is provided with a strip-shaped dent; the comfort of the user holding the hand-held part 1 can be improved, the concave part 11 can increase the friction force between the fingers and the hand-held part 1, and the stability of the user holding the hand-held part 1 is further improved.

As shown in fig. 3, the water spraying mechanism 3 is mounted on the third side wall 15 of the hand-held part 1; the hand-held part 1 comprises a sealing element 12 and an inlet, the inlet is positioned on the fourth side wall 16 of the hand-held part 1, the sealing element 12 is matched with the fourth side wall 16 of the hand-held part 1 and is used for sealing the inlet; the first side wall 13 is disposed opposite to the second side wall 14, and the third side wall 15 is disposed opposite to the fourth side wall 16. The user holds both sides of the hand-held portion 1 and uses the water spraying mechanism 3 with fingers, improving the convenience of using the blackboard erasing device 100; moreover, the liquid enters the chamber through the inlet and cooperates with the fourth side wall 16 of the handpiece 1 through the seal 12 and seals the inlet, and the liquid can be replenished at any time after the use, so that the blackboard erasing device 100 can be reused.

As shown in fig. 1 and 5, the water spraying mechanism 3 comprises a base 32, a pressing part 33, a first connecting pipe 34, a piston 36 and a pressure spring 37, wherein a pressing groove 321 is formed in the circumferential direction of the base 32, the pressing part 33 is connected with the top of the piston 36, and at least one part of the pressing part 33 is positioned in the pressing groove 321 and is in movable fit with the base 32; the channel of the piston 36 is communicated with the nozzle 31, the bottom of the piston 36 is sleeved outside the first connecting pipe 34 and is in sliding fit with the outer wall of the first connecting pipe 34, and at least one part of the first connecting pipe 34 is positioned in the cavity; the pressure spring 37 is sleeved outside the first connecting pipe 34, the top of the pressure spring 37 is in contact with the bottom of the piston 36, and the bottom of the pressure spring 37 is installed in the seat body 32. The pressing portion 33 is pressed by a finger, the piston 36 is pressed, the piston 36 discharges the gas in the seat 32, the liquid is extracted into the piston 36, the piston 36 is pressed again, the liquid is ejected by the piston 36, the liquid is ejected by the blackboard erasing device 100, the piston 36 is repeatedly pressed, the liquid is ejected by the piston 36 without interruption, and dust around the piston is reduced. In this embodiment, the water spraying mechanism 3 further has a second connection pipe 35 extending into the bottom of the chamber, the second connection pipe 35 is communicated with the first connection pipe 34, and by providing the second connection pipe 35, the water spraying mechanism 3 can spray the liquid at the bottom of the chamber.

In addition, at least a part of the hand-held part 1 is made of transparent material; the liquid dosage in the cavity can be observed, so that a user can supplement liquid in time; the hand-held part 1 can be made of transparent plastic materials, so that the weight of the hand-held part 1 is reduced and the acting force of the blackboard erasing device 100 is reduced under the condition that the liquid in the cavity can be clearly seen.

The above examples are also not an exhaustive list based on the utility model, and there may be a number of other embodiments not listed. Any substitutions and modifications made without departing from the spirit of the utility model are within the scope of the utility model.

Claims

1. The blackboard erasing device is characterized by comprising a handheld part, a clamping mechanism and a water spraying mechanism, wherein the water spraying mechanism is arranged on the handheld part, a cavity for containing liquid is formed in the handheld part, at least one part of the water spraying mechanism is positioned in the cavity, and a nozzle of the water spraying mechanism is communicated with the cavity;

2. The blackboard erasing device according to claim 1, wherein the holding mechanism includes a base plate, an elastic member, a first holding member and a second holding member, the base plate being fixed to a bottom of the hand-held portion;

3. The blackboard erasing device according to claim 2, wherein the first holding member includes a first connecting plate and a first side plate, the bottom plate has a guide groove on the outer side thereof, and at least a part of the first connecting plate is located in the guide groove and slidably engaged with the guide groove; the first connecting plate is fixed with the first side plate.

4. The blackboard erasing device according to claim 3, wherein the second holding member includes a second connection plate and a second side plate, the elastic member includes a first spring and a second spring, both ends of the first spring are respectively connected to one side of the first side plate and one side of the bottom plate, and both ends of the second spring are respectively connected to the second side plate and the other side of the bottom plate; at least a part of the second connecting plate is positioned in the guide groove and is in sliding fit with the guide groove, and the second connecting plate is fixed with the second side plate.

5. The blackboard erasing device according to any one of claims 1 to 4, wherein a holding rod is provided at a top of the holding portion, the holding rod is perpendicular to an upper end face of the holding portion, and the holding rod is disposed close to the water spraying mechanism.

6. The blackboard erasing device according to claim 5, wherein one end of the holding rod is gradually reduced from one end to the other end of the holding rod, and the maximum end of the holding rod is disposed away from the hand holding portion.

7. The blackboard erasing device according to any one of claims 1 to 4, wherein the first side wall or the second side wall of the holding portion is provided with a concave portion having an arc shape, and the concave portion has a strip-shaped dent.

8. The blackboard erasing apparatus according to claim 7, wherein the water spraying mechanism is mounted on the third side wall of the hand-hold portion;

9. The blackboard erasing device according to any one of claims 1 to 4, wherein at least a part of the hand holding portion is made of a transparent material.