Self-cleaning type dust collection blackboard eraser

Abstract

The utility model provides a self-cleaning type dust collection blackboard eraser, which belongs to the technical field of school supplies, and comprises a support shell, a push switch, a blackboard eraser, a dust collection chamber, a dust filter screen, a fan and a power supply, a containing cavity with a downward opening is formed in the supporting shell. The push switch is fixedly mounted at the top of the accommodating cavity; the blackboard eraser is fixedly installed at the bottom of the pressing switch, and a brush of the blackboard eraser protrudes downwards out of the bottom face of the supporting shell. The dust collection chamber is fixedly installed on the supporting shell, and an inner cavity of the dust collection chamber communicates with the containing cavity; the dust filter screen is fixedly mounted at an air outlet of the dust collection chamber, the fan and the power supply are both fixedly mounted on the supporting shell, the fan is used for extracting air in the dust collection chamber from the air outlet, and the power supply, the fan and the push switch are connected in series through wires. According to the self-cleaning type dust collection blackboard eraser, an operator holds the supporting shell to enable the brush of the blackboard eraser to abut against a blackboard, due to the fact that the bottom face of the brush protrudes out of the bottom face of the supporting shell, when the brush makes contact with the blackboard, a certain gap always exists between the supporting shell and the blackboard, and therefore normal work of the blackboard eraser is guaranteed. In the blackboard erasing process, the pressing switch is triggered by pressing the supporting shell, the power source drives the draught fan to rotate, air in the dust collecting chamber is pumped out from the air outlet, instantaneous vacuum is formed in the dust collecting chamber, and due to the fact that the containing cavity is communicated with the dust collecting chamber, dust in the containing cavity can enter the dust collecting chamber along with airflow; and meanwhile, airflow outside the containing cavity can enter the containing cavity through a gap between the supporting shell and the blackboard, so that the possibility of dust diffusion is avoided, and dust entering the dust collection chamber is blocked in the dust collection chamber by the filter screen.

Description

Technical Field

[0001] The utility model belongs to the technical field of school supplies, and more specifically relates to a self-cleaning dust-absorbing blackboard eraser. Background Art

[0002] At present, many schools still use traditional blackboard erasers to wipe the blackboard. This will cause dust to fly everywhere, endangering the health of teachers and students. At the same time, the dust will fall on their clothes, which will also damage the image of teachers and students.

[0003] Existing vacuum erasers have poor vacuuming effect, are difficult to clean, and are inconvenient to use. Utility Model Content

[0004] The utility model aims to provide a self-cleaning dust-absorbing blackboard eraser, aiming to solve the problem that the existing blackboard erasers have poor dust-absorbing effect.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a self-cleaning dust-absorbing blackboard eraser, comprising: a supporting shell, a push switch, a blackboard eraser, a dust collecting chamber, a dust filter, a fan and a power supply; the interior of the supporting shell is provided with a accommodating chamber with an opening facing downward; the push switch is fixedly mounted on the top of the accommodating chamber; the blackboard eraser is fixedly mounted on the bottom of the push switch, and the brush of the blackboard eraser protrudes downward from the bottom surface of the supporting shell; the dust collecting chamber is fixedly mounted on the supporting shell, and the inner cavity of the dust collecting chamber is connected to the accommodating chamber; the dust filter is arranged at the air outlet of the dust collecting chamber, the fan and the power supply are both fixedly mounted on the supporting shell, the fan is used to extract the gas in the dust collecting chamber from the air outlet, and the power supply, the fan and the push switch are connected in series through wires.

[0006] In a possible implementation, one side of the support shell in the length direction is provided with an opening for the blackboard eraser to enter and exit, and a baffle is hingedly installed at the opening.

[0007] In a possible implementation, an eraser clip is fixedly mounted on the bottom of the push switch, a pull-out block is provided on the inner side wall of the eraser clip, and a pull-out groove slidably matched with the pull-out block is correspondingly provided on the side wall of the blackboard eraser.

[0008] In a possible implementation, a protective cover is detachably mounted on the top of the support shell, and a first cavity and a second cavity that are independent of each other are provided inside the protective cover. The fan is located in the first cavity, and the power supply is located in the second cavity.

[0009] In a possible implementation, two clamping plates arranged opposite to each other are provided on the outer side wall of the protective cover, and the two clamping plates clamp and fix the dust collecting chamber.

[0010] In one possible implementation, a cleaning assembly is installed below the support shell, and the cleaning assembly includes a base, a reciprocating mechanism and a cleaning roller; the base is detachably mounted on the bottom of the support shell and blocks the lower end opening of the support shell, the cleaning roller is in contact with the bottom surface of the brush, and the reciprocating mechanism is used to drive the cleaning roller to reciprocate in a direction parallel to the bottom surface of the brush.

[0011] In a possible implementation, the reciprocating mechanism includes a bracket and a driving member; a guide rail groove that slides with the bracket is opened on the base, the driving member is used to drive the bracket to reciprocate along the guide rail groove, and the cleaning roller is installed on the bracket.

[0012] In a possible implementation, a line plug is installed on the base, a line jack plugged with the line plug is installed on the support shell, the line plug is electrically connected to the driving member through a wire, and the line jack is electrically connected to the power supply through a wire.

[0013] In a possible implementation, the driving component and the fan are arranged in parallel.

[0014] In a possible implementation, a rubber strip is fixedly mounted on the long side wall of the brush.

[0015] The scheme shown in the embodiment of the present application is compared with the prior art. The utility model is a self-cleaning dust-absorbing blackboard eraser. The operator holds the support shell to make the brush of the blackboard eraser lean against the blackboard. Since the bottom surface of the brush protrudes from the bottom surface of the support shell, when the brush contacts the blackboard, there will always be a certain gap between the support shell and the blackboard, thereby ensuring the normal operation of the blackboard eraser. In the process of wiping the blackboard, the push switch is triggered by pressing the support shell, and the power source drives the fan to rotate, and the air in the dust collecting chamber is extracted from the air outlet, so that an instantaneous vacuum is formed in the dust collecting chamber. Since the accommodating chamber is connected to the dust collecting chamber, the dust in the accommodating chamber will enter the dust collecting chamber with the air flow, and the air flow outside the accommodating chamber will enter the accommodating chamber through the gap between the support shell and the blackboard, thereby avoiding the possibility of dust diffusion. The dust entering the dust collecting chamber is blocked by the filter in the dust collecting chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 An exploded view of a self-cleaning dust-absorbing blackboard eraser provided in an embodiment of the utility model;

[0018] Figure 2 A three-dimensional diagram of a support shell provided by an embodiment of the utility model;

[0019] Figure 3 A three-dimensional diagram of a blackboard eraser provided by an embodiment of the utility model;

[0020] Figure 4 A three-dimensional diagram of an eraser clip provided by an embodiment of the utility model;

[0021] Figure 5 A three-dimensional diagram of a protective cover provided by an embodiment of the utility model;

[0022] Figure 6 A three-dimensional cleaning assembly provided by the embodiment of the utility model Figure 1 ;

[0023] Figure 7 A three-dimensional cleaning assembly provided by the embodiment of the utility model Figure 2 ;

[0024] Figure 8 A front view of a reciprocating mechanism provided in an embodiment of the utility model;

[0025] Fig. 9 A circuit diagram of a self-cleaning dust-absorbing blackboard eraser provided in an embodiment of the utility model.

[0026] In the figure: 1. supporting shell; 101. baffle; 102. protective cover; 103. first cavity; 104. second cavity; 105. clamping plate; 106. dust suction port; 107. air exhaust port; 108. line jack; 109. air outlet; 2. push switch; 3. blackboard eraser; 301. brush; 302. pull-out slot; 303. rubber strip; 4. dust collecting chamber; 401. air outlet; 5. dust filter; 6. fan; 7. power supply; 8. blackboard eraser clamp; 801. pull-out block; 901. base; 902. cleaning roller; 903. bracket; 904. driving member; 905. guide groove; 906. line plug. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] Please also read Figures 1 to 3Now, a self-cleaning dust-absorbing blackboard eraser provided by the utility model is described. The self-cleaning dust-absorbing blackboard eraser comprises: a supporting shell 1, a push switch 2, a blackboard eraser 3, a dust collecting chamber 4, a dust filter 5, a fan 6 and a power supply 7; the interior of the supporting shell 1 is provided with a accommodating chamber with an opening facing downward; the push switch 2 is fixedly mounted on the top of the accommodating chamber; the blackboard eraser 3 is fixedly mounted on the bottom of the push switch 2, and the brush 301 of the blackboard eraser 3 protrudes downward from the bottom surface of the supporting shell 1; the dust collecting chamber 4 is fixedly mounted on the supporting shell 1, and the inner cavity of the dust collecting chamber 4 is connected to the accommodating chamber; the dust filter 5 is arranged at the air outlet 401 of the dust collecting chamber 4, the fan 6 and the power supply 7 are both fixedly mounted on the supporting shell 1, the fan 6 is used to extract the gas in the dust collecting chamber 4 from the air outlet 401, and the power supply 7, the fan 6 and the push switch 2 are connected in series through a wire.

[0029] The self-cleaning dust-absorbing blackboard eraser provided in this embodiment is compared with the prior art. The operator holds the support shell 1 to make the brush 301 of the blackboard eraser 3 against the blackboard. Since the bottom surface of the brush 301 protrudes from the bottom surface of the support shell 1, when the brush 301 contacts the blackboard, there will always be a certain gap between the support shell 1 and the blackboard, thereby ensuring the normal operation of the blackboard eraser 3. In the process of erasing the blackboard, by pressing the support shell 1 to trigger the push switch 2, the power supply 7 drives the fan 6 to rotate, and the air in the dust collecting chamber 4 is drawn out from the air outlet 401, so that an instantaneous vacuum is formed in the dust collecting chamber 4. Since the accommodating chamber is connected to the dust collecting chamber 4, the dust in the accommodating chamber will enter the dust collecting chamber 4 with the air flow, and the air flow outside the accommodating chamber will enter the accommodating chamber through the gap between the support shell 1 and the blackboard, thereby avoiding the possibility of dust diffusion, and the dust entering the dust collecting chamber 4 is blocked by the filter in the dust collecting chamber 4.

[0030] In some embodiments, see Figure 1 and Figure 2 , an opening for the blackboard eraser 3 to enter and exit is provided on one side of the length direction of the supporting shell 1, and a baffle 101 is hingedly installed at the opening. In this embodiment, the length direction of the blackboard eraser 3 is consistent with the length direction of the supporting shell 1. When the blackboard eraser 3 needs to be disassembled, it is only necessary to open the baffle 101, thereby providing convenience for the disassembly and assembly of the blackboard eraser 3.

[0031] In some embodiments, see Figure 1 , Figure 3 and Figure 4, an eraser clip 8 is fixedly installed at the bottom of the push switch 2, a pull-out block 801 is provided on the inner side wall of the eraser clip 8, and a pull-out groove 302 that slides with the pull-out block 801 is correspondingly provided on the side wall of the blackboard eraser 3. In the present embodiment, the top surface of the eraser clip 8 is fixedly connected to the push switch 2, and the bottom surface of the eraser clip 8 is provided with a concave cavity for installing the blackboard eraser 3, and the side of the concave cavity close to the baffle 101 is an open structure. The two inner side walls of the long side of the eraser clip 8 are provided with pull-out blocks 801, and the two side walls of the long side of the blackboard eraser 3 are provided with pull-out grooves 302 that slide with the pull-out block 801. Through the sliding cooperation between the pull-out block 801 and the pull-out grooves 302, the pull-out operation of the blackboard eraser 3 on the eraser clip 8 is realized, and the replacement of the blackboard eraser 3 is convenient.

[0032] In some embodiments, see Figure 1 and Figure 5 , a protective cover 102 is detachably mounted on the top of the supporting shell 1, and a first cavity 103 and a second cavity 104 are provided inside the protective cover 102, which are independent of each other. The fan 6 is located in the first cavity 103, and the power supply 7 is located in the second cavity 104. In this embodiment, the protective cover 102 is detachably mounted on the top surface of the supporting shell 1, and the first cavity 103 and the second cavity 104 are independent of each other and open downward, and the top surface of the supporting shell 1 blocks the lower end openings of the first cavity 103 and the second cavity 104. Since the fan 6 and the power supply 7 are respectively located in the first cavity 103 and the second cavity 104, the protective cover 102 protects the fan 6 and the power supply 7. An air outlet 109 connecting the first cavity 103 and the outside is provided on the supporting shell 1. The dust filter 5 can be fixedly mounted on the dust collecting chamber 4, or fixedly mounted on the protective cover 102. By fixing the protective cover 102 on the top of the supporting shell 1 , the operator can hold the protective cover 102 to wipe the blackboard, making the operation more convenient.

[0033] In some embodiments, see Figure 1 and Figure 5 , two clamping plates 105 arranged opposite to each other are provided on the outer wall of the protective cover 102, and the two clamping plates 105 clamp and fix the dust collecting chamber 4. In this embodiment, two clamping plates 105 arranged in parallel are fixedly installed on the outer wall of the protective cover 102 in the length direction, and the dust collecting chamber 4 is installed between the two clamping plates 105. The top surface of the supporting shell 1 supports the dust collecting chamber 4, and the two clamping plates 105 clamp and fix the dust collecting chamber 4. The outer contour of the dust collecting chamber 4 is flush with the outer contour of the clamping plates 105, thereby improving the overall aesthetics. When the dust collecting chamber 4 needs to be disassembled, it can be directly pulled out from between the two clamping plates 105. A dust suction port 106 is provided on the top surface of the supporting shell 1, and an air extraction port 107 is provided on the top of the side wall of the dust collecting chamber 4. A dust transmission channel connecting the dust suction port 106 and the air extraction port 107 is provided on the clamping plate 105.

[0034] In some embodiments, see Figure 1 and Figure 6 A cleaning assembly is installed below the supporting shell 1, and the cleaning assembly includes a base 901, a reciprocating mechanism, and a cleaning roller 902; the base 901 is detachably mounted on the bottom of the supporting shell 1 and blocks the lower end opening of the supporting shell 1, the cleaning roller 902 is in contact with the bottom surface of the brush 301, and the reciprocating mechanism is used to drive the cleaning roller 902 to reciprocate in a direction parallel to the bottom surface of the brush 301. In this embodiment, a concave cavity for accommodating the reciprocating mechanism and the cleaning roller 902 is provided on the top surface of the base 901. The base 901 is detachably mounted on the bottom of the supporting shell 1, and the base 901 blocks the lower end opening of the supporting shell 1, so that the blackboard eraser 3 is in a relatively closed space. The cleaning roller 902 is in contact with the bottom surface of the brush 301, and the reciprocating mechanism drives the cleaning roller 902 to reciprocate along the length direction of the blackboard eraser 3. After the blackboard eraser 3 has been used for a period of time, a large amount of dust will remain on the bottom surface of the brush 301 of the blackboard eraser 3. At this time, the cleaning component is installed on the supporting shell 1, and the reciprocating mechanism will drive the cleaning roller 902 to reciprocate and roll the bottom surface of the brush 301, thereby cleaning the dust on the brush 301. The cleaned dust will fall into the accommodating cavity and finally enter the dust collecting chamber 4 under the action of the fan 6.

[0035] In some embodiments, see Figure 6 and Figure 8 The reciprocating mechanism includes a bracket 903 and a driving member 904; a guide rail groove 905 that is slidably matched with the bracket 903 is provided on the base 901, and the driving member 904 is used to drive the bracket 903 to reciprocate along the guide rail groove 905, and the cleaning roller 902 is installed on the bracket 903. In this embodiment, the number of the guide rail grooves 905 is two, which are arranged along the length direction of the blackboard eraser 3. The two ends of the bracket 903 slide in the two guide rail grooves 905 respectively. The driving member 904 is fixedly installed inside the base 901, and the driving member 904 is an electric push rod, and the telescopic rod of the electric push rod is fixedly connected to the bracket 903. The electric push rod drives the bracket 903 to reciprocate in the guide rail groove 905. The driving member 904 can also use a motor, and the motor drives the bracket 903 to reciprocate through mechanical transmission.

[0036] In some embodiments, see Figure 2 and Figure 7, a line plug 906 is installed on the base 901, a line jack 108 plugged with the line plug 906 is installed on the support shell 1, the line plug 906 is electrically connected to the driving member 904 through a wire, and the line jack 108 is electrically connected to the power supply 7 through a wire. In this embodiment, the line plug 906 is fixedly installed on the outer wall of the base 901 and placed upward. The line jack 108 is opened on the support shell 1 and corresponds to the line plug 906. When the base 901 and the support shell 1 are installed in place, the line plug 906 is inserted upward into the line jack 108, so as to realize the conduction of the circuit of the driving member 904.

[0037] In some embodiments, see Fig. 9 , the driving member 904 and the fan 6 are arranged in parallel. In this embodiment, since the driving member 904 and the fan 6 are connected in parallel circuits, the driving member 904 and the fan 6 will not affect each other during operation.

[0038] In some embodiments, see Figure 3 , the long side wall of the brush 301 is fixedly mounted with a rubber strip 303. In this embodiment, the rubber strip 303 is fixedly mounted on the two long side walls of the brush 301. The bottom surface of the rubber strip 303 is flush with the bottom surface of the brush 301, so the brush 301 and the rubber strip 303 are in contact with the blackboard at the same time. The rubber strip 303 has a higher hardness than the brush 301, so in the process of wiping the blackboard, the rubber strip 303 can scrape off the dust remaining on the blackboard, thereby improving the efficiency of wiping the blackboard.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-cleaning dust-absorbing eraser, characterized in that: include: A supporting shell, a push switch, a blackboard eraser, a dust collecting chamber, a dust filter, a fan and a power supply; the interior of the supporting shell is provided with a accommodating chamber with an opening facing downward; the push switch is fixedly mounted on the top of the accommodating chamber; the blackboard eraser is fixedly mounted on the bottom of the push switch, and the brush of the blackboard eraser protrudes downward from the bottom surface of the supporting shell; the dust collecting chamber is fixedly mounted on the supporting shell, and the inner cavity of the dust collecting chamber is connected to the accommodating chamber; the dust filter is arranged at the air outlet of the dust collecting chamber, the fan and the power supply are both fixedly mounted on the supporting shell, the fan is used to extract the gas in the dust collecting chamber from the air outlet, and the power supply, the fan and the push switch are connected in series through wires.

2. A self-cleaning dust-absorbing eraser as claimed in claim 1, characterized in that: An opening for the blackboard eraser to enter and exit is provided on one side of the support shell in the length direction, and a baffle is hingedly installed at the opening.

3. A self-cleaning dust-absorbing eraser as claimed in claim 1, characterized in that: An eraser clip is fixedly installed at the bottom of the push switch, a pull-out block is arranged on the inner side wall of the eraser clip, and a pull-out groove which is slidably matched with the pull-out block is correspondingly arranged on the side wall of the blackboard eraser.

4. A self-cleaning dust-absorbing eraser as claimed in claim 1, characterized in that: A protective cover is detachably mounted on the top of the supporting shell, and a first cavity and a second cavity which are independent of each other are arranged inside the protective cover. The fan is located in the first cavity, and the power supply is located in the second cavity.

5. A self-cleaning dust-absorbing eraser as claimed in claim 4, characterized in that: Two clamping plates arranged opposite to each other are arranged on the outer side wall of the protective cover, and the two clamping plates clamp and fix the dust collecting chamber.

6. A self-cleaning dust-absorbing eraser as claimed in claim 1, characterized in that: A cleaning assembly is installed below the support shell, and the cleaning assembly includes a base, a reciprocating mechanism and a cleaning roller; the base is detachably mounted on the bottom of the support shell and blocks the lower end opening of the support shell, the cleaning roller is in contact with the bottom surface of the brush, and the reciprocating mechanism is used to drive the cleaning roller to reciprocate in a direction parallel to the bottom surface of the brush.

7. A self-cleaning dust-absorbing eraser as claimed in claim 6, characterized in that: The reciprocating mechanism includes a bracket and a driving member; a guide rail groove that slidably cooperates with the bracket is opened on the base, the driving member is used to drive the bracket to reciprocate along the guide rail groove, and the cleaning roller is installed on the bracket.

8. A self-cleaning dust-absorbing eraser as claimed in claim 7, characterized in that: A line plug is installed on the base, a line jack plugged with the line plug is installed on the support shell, the line plug is electrically connected to the driving member through a wire, and the line jack is electrically connected to the power supply through a wire.

9. A self-cleaning dust-absorbing eraser as claimed in claim 8, characterized in that: The driving member and the fan are arranged in parallel.

10. The self-cleaning dust-absorbing eraser according to claim 1, characterized in that: The long side wall of the brush is fixedly mounted with a rubber strip.

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