CN211764480U

CN211764480U - Chalk holder for teaching

Info

Publication number: CN211764480U
Application number: CN202020425204.0U
Authority: CN
Inventors: 陈婧
Original assignee: Chongqing Vocational Institute of Engineering
Current assignee: Chongqing Vocational Institute of Engineering
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-10-27
Anticipated expiration: 2030-03-30

Abstract

The utility model relates to a chalk holder for teaching, which comprises a tube body, wherein a holding opening is arranged at the center of the left side of the tube body, and an adsorption ring is fixedly arranged at the left side of the tube body; the utility model discloses a body, the centre gripping mouth, adsorb the circle, the fixed block, press from both sides tight piece, a housing, the fan, first filter screen, the second filter screen, a battery, cross the filter cap, air inlet hose and exhaust hose's setting, the purpose that prevents the chalk dust and fly has been reached, current english teaching work has been solved, receive the restriction of economic development level, multimedia teaching can not be used in all classrooms, most teachers still use the chalk to carry out teaching work, the composition of chalk is mostly harmful chemical, it can produce harmful effects to the health of self to inhale the dust, and the chalk uses terminal inconvenient centre gripping, the hardness ratio of chalk itself is lower, easy fracture, there is the problem of the inconvenient use of harmful health.

Description

Chalk holder for teaching

Technical Field

The utility model relates to a teaching equipment technical field specifically is a chalk holder is used in teaching.

Background

Chalks are widely used in daily life and are generally used for writing on blackboards. Ancient chalks are generally made of natural chalk, but nowadays, the chalk is frequently replaced by other substances, the main component of the chalk is calcium sulfate, the chalk is a white precipitate, the chalk is not easy to decompose, the particles are larger than dust, domestic chalks mainly comprise two types of common chalk and dust-free chalk, and the main components of the chalk are calcium carbonate (limestone) and calcium sulfate (gypsum) or contain a small amount of calcium oxide.

Present english teaching work receives economic development level's restriction, multimedia teaching can not be used at all classrooms, most teachers still use the chalk to carry out teaching work, the composition of chalk is mostly harmful chemical substance, inhale the dust and can produce harmful effects to the health of self, the chalk is used terminal inconvenient centre gripping moreover, the hardness ratio of chalk itself is lower, easy fracture, there is the problem of harmful healthy inconvenient use, for this reason, we propose a teaching with chalk holder and solve this problem.

SUMMERY OF THE UTILITY MODEL

The utility model is directed to the above-mentioned problem, the utility model provides a chalk holder is used in teaching, possess the advantage that prevents the chalk dust and fly off, current english teaching work has been solved, receive economic development level's restriction, multimedia teaching can not be used in all classrooms, most teachers still use the chalk to carry out teaching work, the composition of chalk is mostly harmful chemical substance, it can produce harmful effects to the health of self to inhale the dust, and the chalk uses terminal inconvenient centre gripping, the hardness ratio of chalk itself is lower, easy fracture, there is the problem of harmful healthy inconvenient use.

The utility model provides a technical problem's technical scheme does:

a chalk holder for teaching comprises a tube body, wherein a clamping opening is formed in the center of the left side of the tube body, an adsorption ring is fixedly mounted on the left side of the tube body, a fixed block is fixedly mounted on the top of the left side of an inner cavity of the tube body, a clamping block is slidably connected to the bottom of the left side of the inner cavity of the tube body, a shell is communicated with the right side of the top of the inner cavity of the tube body, a filter cover is in threaded connection with the top of the shell, a notch is formed in the inner wall of the tube body and one end of the inner wall of the shell, which is positioned on the right side of the shell, a base is supported by an inner cavity bearing of the notch, a stud is in threaded connection with the inner cavity of the base, a connecting rod is fixedly mounted on the left side, the end intercommunication of giving vent to anger of fan has exhaust hose, exhaust hose's right-hand member and the left bottom intercommunication of casing, the top intercommunication on adsorption ring right side has the hose of admitting air, the right-hand member of the hose of admitting air runs through the fixed block in proper order and removes the dish and communicate with the inlet end of fan.

Furthermore, the bottom of the clamping block is fixedly provided with a pull rod, the bottom of the clamping block is fixedly provided with a spring, the bottom of the spring is welded with the inner cavity of the tube body, and the bottom of the pull rod sequentially penetrates through the spring and the tube body and extends to the outside of the tube body.

Further, the spout has all been seted up at the front and the back of removal dish, the equal fixed mounting in front and the back of body inner chamber has the slide bar, spout and slide bar sliding connection.

Furthermore, the surface of the filtering cover is provided with a plurality of air holes which are regularly distributed, and the bottom of the filtering cover is fixedly provided with a first filter screen.

Further, the left side fixed mounting of absorption circle inner chamber has the second filter screen, the absorption circle is the cavity setting.

Furthermore, the surface of the base is sleeved with an anti-slip sleeve, and anti-slip salient points are arranged on the surface of the anti-slip sleeve.

Furthermore, the bottom of the fixed block and the top of the clamping block are both obliquely arranged, and the fixed block and the clamping block are arranged in a shape of being attached to chalk.

The effects provided in the contents of the present invention are only the effects of the embodiments, not all the effects of the present invention, and one of the above technical solutions has the following advantages or advantageous effects:

1. the utility model discloses a body, the centre gripping mouth, adsorb the circle, the fixed block, press from both sides tight piece, a housing, the fan, first filter screen, the second filter screen, a battery, cross the filter cap, air inlet hose and exhaust hose's setting, the purpose that prevents the chalk dust and fly has been reached, current english teaching work has been solved, receive the restriction of economic development level, multimedia teaching can not be used in all classrooms, most teachers still use the chalk to carry out teaching work, the composition of chalk is mostly harmful chemical, it can produce harmful effects to the health of self to inhale the dust, and the chalk uses terminal inconvenient centre gripping, the hardness ratio of chalk itself is lower, easy fracture, there is the problem of the inconvenient use of harmful health.

2. The utility model discloses a press from both sides tight piece, the setting of spring and pull rod, the user stimulates the pull rod and will press from both sides tight piece and stimulate downwards, put into the centre gripping mouth with the chalk, then reset the pull rod, it presss from both sides the chalk tightly to press from both sides tight piece, the purpose of fixing the chalk has been reached, through the setting of spout and slide bar, the user removes the movable plate about as required, thereby drive the removal of chalk, the purpose of control chalk use length has been reached, through the setting of gas pocket and first filter screen, filter the inner chamber at the casing with the dust that the fan absorbed, the purpose of collecting the dust has been reached.

3. The utility model discloses a friction between base surface and the palm has been increased in the setting of antiskid cover, has reached the purpose of conveniently rotating the base, through the setting of fixed block and the tight piece of clamp, presss from both sides tightly the chalk, has reached the purpose of laminating more with the chalk, through the setting of second filter screen, can filter great material outside the second filter screen, only inhales the dust, has reached the mesh of filtering the dust.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partial front sectional view of the housing of the present invention;

FIG. 3 is a partial right side view of the clamping block of the present invention;

FIG. 4 is a partial side view of the movable plate of the present invention;

fig. 5 is a left side view of the adsorption ring of the present invention.

In the figure: 1. the device comprises a pipe body, 2, a clamping opening, 3, an adsorption ring, 4, a fixing block, 5, a clamping block, 6, a shell, 7, a filter cover, 8, a notch, 9, a base, 10, a stud, 11, a connecting rod, 12, a movable disc, 13, a sleeve, 14, a fan, 15, a battery, 16, an exhaust hose, 17, an air inlet hose, 18, a pull rod, 19, a spring, 20, a sliding groove, 21, a sliding rod, 22, an air hole, 23, a first filter screen, 24, a second filter screen, 25 and an anti-slip sleeve.

Detailed Description

In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted so as to not unnecessarily limit the invention.

Referring to fig. 1-5, a chalk holder for teaching comprises a tube 1, a holding opening 2 is provided at the left center of the tube 1, an adsorption ring 3 is fixedly installed at the left side of the tube 1, a fixing block 4 is fixedly installed at the left top of the inner cavity of the tube 1, a clamping block 5 is slidably connected with the left bottom of the inner cavity of the tube 1, a housing 6 is communicated with the right side of the top of the inner cavity of the tube 1, a filter cover 7 is connected with the top of the housing 6 through a screw thread, a notch 8 is provided at one end of the inner wall of the tube 1 and located at the right side of the housing 6, a base 9 is supported by the inner cavity bearing of the notch 8, a stud 10 is connected with the inner cavity of the base 9 through a screw thread, a connecting rod 11 is fixedly installed at the left side of the stud 10, a movable plate 12 is fixedly installed at the left side, the air outlet end of the fan 14 is communicated with an exhaust hose 16, the right end of the exhaust hose 16 is communicated with the bottom of the left side of the shell 6, the top of the right side of the adsorption ring 3 is communicated with an air inlet hose 17, the right end of the air inlet hose 17 sequentially penetrates through the fixed block 4 and the movable disc 12 and is communicated with the air inlet end of the fan 14, the aim of preventing chalk dust from scattering is achieved through the arrangement of the pipe body 1, the clamping port 2, the adsorption ring 3, the fixed block 4, the clamping block 5, the shell 6, the fan 14, the first filter screen 23, the second filter screen 24, the battery 15, the filter cover 7, the air inlet hose 17 and the exhaust hose 16, the problem that the existing English teaching work is limited by the economic development level is solved, multimedia teaching can not be applied in all classes, most teachers still use chalks to carry out teaching work, the ingredients of chalks are mostly harmful chemical substances, and the sucked, and the chalk is inconvenient to clamp when used at the tail end, the hardness of the chalk is low, the chalk is easy to break, and the problems of harmfulness, health and inconvenience in use exist.

In this embodiment, it is specific, the bottom fixed mounting who presss from both sides tight piece 5 has pull rod 18, the bottom fixed mounting who presss from both sides tight piece 5 has spring 19, the bottom of spring 19 and the inner chamber welding of body 1, the bottom of pull rod 18 runs through spring 19 and body 1 in proper order and extends to the outside of body 1, through pressing from both sides tight piece 5, spring 19 and the setting of pull rod 18, the user stimulates pull rod 18 will press from both sides tight piece 5 and pull down, put into centre gripping mouth 2 with the chalk, then reset pull rod 18, press from both sides tight piece 5 and press from both sides the chalk tightly, reached and fixed the purpose to the chalk.

In this embodiment, specifically, the sliding grooves 20 have been all seted up on the front and the back of the movable plate 12, and the equal fixed mounting in front and the back of the inner chamber of the tube body 1 has the slide bar 21, and the sliding grooves 20 and the slide bar 21 are connected in a sliding manner, and through the setting of the sliding grooves 20 and the slide bar 21, the movable plate 12 is moved to the left and right sides by the user as required, thereby driving the movement of the chalk, and achieving the purpose of controlling the chalk use length.

In this embodiment, specifically, the surface of filtering lid 7 is seted up there is the gas pocket 22, and the gas pocket 22 is a plurality of and regular distribution, and the bottom fixed mounting of filtering lid 7 has first filter screen 23, and through the setting of gas pocket 22 and first filter screen 23, filters the inner chamber at casing 6 with the dust that fan 14 absorbed, has reached the purpose of collecting the dust.

In this embodiment, it is specific, the left side fixed mounting who adsorbs 3 inner chambers of circle has second filter screen 24, adsorbs circle 3 to be the cavity setting, through second filter screen 24's setting, can filter great material outside second filter screen 24, only inhales the dust, has reached the mesh of filtering the dust.

In this embodiment, specifically, the surface of the base 9 is sleeved with the anti-slip sleeve 25, the surface of the anti-slip sleeve 25 is provided with the anti-slip bumps, and the friction between the surface of the base 9 and the palm is increased by the arrangement of the anti-slip sleeve 25, so that the purpose of conveniently rotating the base 9 is achieved.

In the embodiment, specifically, the bottom of the fixing block 4 and the top of the clamping block 5 are both obliquely arranged, the fixing block 4 and the clamping block 5 are arranged in a shape of being attached to a chalk, the chalk is clamped through the fixing block 4 and the clamping block 5, and the purpose of being attached to the chalk is achieved.

The specific working process is as follows: the user pulls the pull rod 18 to pull the clamping block 5 downwards, chalk is placed in the clamping opening 2 and is inserted into the inner cavity of the sleeve 13 inwards, then the pull rod 18 is loosened to clamp the chalk, the user rotates the anti-skidding sleeve 25 to drive the base 9 to rotate, the stud 10 is adjusted left and right, the stud 10 moves left and right to drive the connecting rod 11 to move, the connecting rod 11 drives the moving disc 12 to move on the sliding rod 21 to drive the sleeve 13 to move, the chalk moves along with the sleeve 13 to control the using length of the chalk, when the user writes by using the chalk, the battery 15 is switched on, so that the fan 14 starts to work, dust enters the inner cavity of the adsorption ring 3 through the second filter screen 24, suction force generated by the fan 14 enables the dust to enter the inner cavity of the shell 6 through the air inlet hose 17 and the air outlet hose 16, and the dust is intercepted by the first filter screen 23 in the inner cavity of, after use, the user opens the filter cover 7 and takes out the dust in the inner cavity of the shell 6.

Although the above description has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and on the basis of the technical solution of the present invention, various modifications or variations that can be made by those skilled in the art without creative efforts are still within the scope of the present invention.

Claims

1. The utility model provides a chalk holder for teaching, includes body (1), its characterized in that, centre gripping mouth (2) have been seted up to the left center department of body (1), the left side fixed mounting of body (1) has adsorption ring (3), the left top fixed mounting of body (1) inner chamber has fixed block (4), the left bottom sliding connection of body (1) inner chamber has tight piece (5) of clamp, the right side intercommunication at body (1) inner chamber top has casing (6), the top threaded connection of casing (6) has filter cover (7), notch (8) have been seted up to the inner wall of body (1) and the one end that is located casing (6) right side, the inner chamber bearing of notch (8) supports there is base (9), the inner chamber threaded connection of base (9) has double-screw bolt (10), the left side fixed mounting of double-screw bolt (10) has connecting rod (11), the left side fixed mounting of connecting rod (11) has removal dish (12), the left side fixed mounting who removes dish (12) has sleeve (13), the top fixed mounting that removes dish (12) right side has fan (14), the bottom fixed mounting that removes dish (12) right side has battery (15), the end intercommunication of giving vent to anger of fan (14) has exhaust hose (16), the right-hand member and the left bottom intercommunication of casing (6) of exhaust hose (16), the top intercommunication on adsorption ring (3) right side has air inlet hose (17), the right-hand member of air inlet hose (17) runs through fixed block (4) and removal dish (12) in proper order and communicates with the air inlet end of fan (14).

2. A chalk holder for teaching according to claim 1, characterized in that a pull rod (18) is fixedly installed at the bottom of the clamping block (5), a spring (19) is fixedly installed at the bottom of the clamping block (5), the bottom of the spring (19) is welded with the inner cavity of the tube body (1), and the bottom of the pull rod (18) penetrates through the spring (19) and the tube body (1) in sequence and extends to the outside of the tube body (1).

3. The chalk holder for teaching of claim 1, characterized in that the front and back of the moving plate (12) are both provided with sliding grooves (20), the front and back of the inner cavity of the tube body (1) are both fixedly provided with sliding rods (21), and the sliding grooves (20) and the sliding rods (21) are connected in a sliding manner.

4. The chalk holder for teaching of claim 1, characterized in that the surface of the filter cover (7) is provided with a plurality of air holes (22), the air holes (22) are regularly distributed, and the bottom of the filter cover (7) is fixedly provided with a first filter screen (23).

5. A chalk holder for teaching according to claim 1, characterized in that a second filter screen (24) is fixedly installed on the left side of the inner cavity of the suction ring (3), and the suction ring (3) is hollow.

6. A chalk holder for teaching according to claim 1, characterized in that an anti-slip cover (25) is sleeved on the surface of said base (9), and anti-slip protrusions are provided on the surface of said anti-slip cover (25).

7. A chalk holder for teaching according to claim 1, characterized in that the bottom of the fixed block (4) and the top of the clamping block (5) are both inclined and the fixed block (4) and the clamping block (5) are arranged to conform to the shape of chalk.