CN219115111U

CN219115111U - Push-pull blackboard

Info

Publication number: CN219115111U
Application number: CN202221885125.3U
Authority: CN
Inventors: 杜亚娟
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2023-06-02
Anticipated expiration: 2032-07-21

Abstract

The utility model discloses a push-pull blackboard, which comprises: a blackboard frame; two cross bars, two ends of each cross bar are respectively connected with two sides of the blackboard frame in a sliding way; the top and the bottom of the first panel are respectively connected with the two cross bars in a sliding way; and the second panel is positioned behind the first panel, and the top and the bottom of the second panel are respectively connected with the two cross bars in a sliding way. According to the blackboard writing board, the first panel and the second panel which are horizontally pushed and pulled are arranged, the visual sense of upper and lower faults does not exist on the same panel on the same side of the blackboard writing board, more effective knowledge writing board writing is provided for students, the absorption efficiency of the students to knowledge points is improved, meanwhile, the height positions of the first panel and the second panel can be adjusted by moving the two transverse rods up and down, the requirements of teachers with different heights on the heights of the blackboard writing board are met, the blackboard writing operation in the teaching process is more humanized, and the teaching comfort of the teachers is improved.

Description

Push-pull blackboard

Technical Field

The utility model relates to the technical field of teaching aids for teaching. More particularly, the present utility model relates to a push-pull blackboard.

Background

The blackboard is used as a necessary facility in a classroom, along with the rapid development of advanced technology of teaching equipment, the functional requirement on the blackboard is higher, in order to meet the writing requirement of teachers on a larger blackboard in the teaching process, the blackboard is increasingly arranged in the classroom to be push-pull, the existing push-pull type blackboard is mostly pushed up and down in the vertical direction, and the blackboard comprises two parallel vertical-face blackboards, wherein the two parallel vertical-face blackboards are respectively lifted through pushing and pulling, one blackboard is pulled to the lower side for writing, and the other blackboard is pushed to the higher height; the blackboard which is pushed up and down alternately uses the expansion board for writing, but the middle of the two blackboards is separated, so that the blackboard writing on the two blackboards is visually fault, and the study and watching of students are influenced.

The application number is 2021210233535, and the name is a novel push-pull blackboard, and a movable blackboard capable of being pushed and pulled is disclosed, but the height of the blackboard cannot be adjusted, and the blackboard is unfriendly to a relatively short teacher, so that teaching is influenced.

Disclosure of Invention

It is an object of the present utility model to solve at least the above problems and to provide at least the advantages to be described later.

The utility model also aims to provide a push-pull blackboard which comprises a first panel and a second panel which can be horizontally pushed and pulled, and meanwhile, the height of the blackboard can be adjusted according to the height of a blackboard writing, so that the problem that the upper and lower push-pull blackboard in the prior art has faults to influence watching is solved, meanwhile, the height of the blackboard is adjusted according to a teacher, the flexibility and convenience in the teaching process are improved, and the blackboard has higher practicability and popularization value.

To achieve these objects and other advantages and in accordance with the purpose of the utility model, there is provided a push-pull blackboard comprising:

the blackboard frame is fixedly arranged on the wall body;

the two cross bars are horizontally arranged on the blackboard frame at intervals along the vertical direction, and two ends of each cross bar are respectively connected with two sides of the blackboard frame in a sliding manner along the vertical direction;

the top and the bottom of the first panel are respectively connected with the two cross bars in a sliding manner along the width direction of the blackboard frame;

the second panel is parallel to the wall body, is arranged between the two cross bars and is positioned behind the first panel, and the top and the bottom of the second panel are respectively connected with the two cross bars in a sliding manner along the width direction of the blackboard frame.

Preferably, the push-pull blackboard is of an inverted U-shaped frame structure, and two vertical parts and horizontal parts of the blackboard frame are hollow; the inner side of each vertical part is provided with a strip-shaped first through hole along the vertical direction;

the push-pull blackboard also comprises a driving mechanism, which comprises:

the two screws are arranged in one vertical part correspondingly, each screw is arranged vertically, and two ends of each screw are respectively connected with the top and the bottom of the corresponding vertical part in a rotating way;

two pairs of first sliding blocks are arranged on one cross rod correspondingly, two ends of each cross rod respectively penetrate through the strip-shaped first through holes of the two vertical parts to extend into the vertical parts and are connected with one first sliding block, and threads of each first sliding block are sleeved on adjacent screw rods in a rotating mode.

Preferably, the push-pull blackboard, the driving mechanism further includes:

the output shaft of the first motor is coaxially arranged with the corresponding screw rod, and the output shaft of the first motor is connected with the corresponding screw rod;

the two first belt pulleys are both positioned in the horizontal part, the top of one screw rod is fixedly sleeved with one first belt pulley, and the two first belt pulleys are linked through a first transmission belt.

Preferably, the push-pull blackboard, the two opposite sides of two horizontal poles set up on all be equipped with first spout and second spout, first spout is located the place ahead of second spout, every first spout and every second spout all follow the width direction of blackboard frame extends, the top and the bottom of first panel slide respectively and locate in two first spouts, the top and the bottom of second panel slide respectively and locate in two second spouts.

Preferably, the push-pull blackboard is characterized in that two opposite sides of the two cross bars are respectively provided with a second transmission belt, and two ends of each second transmission belt are respectively sleeved with a second belt pulley; the bottom of each first chute is provided with a strip-shaped second through hole along the width direction of the blackboard frame, a second sliding block is fixedly arranged on the front belt body of each second conveyor belt, and one end of each second sliding block respectively penetrates through the corresponding second through hole and is fixedly connected with two ends of the first panel; a third sliding block is fixedly arranged on the rear belt body of each second conveying belt, a strip-shaped third through hole is formed in the bottom of each second sliding groove along the width direction of the blackboard frame, and one end of each third sliding block penetrates through the corresponding third through hole and is fixedly connected with two ends of the second panel.

Preferably, the sliding blackboard is characterized in that one second belt pulley is driven by a second motor to rotate, and the second belt pulley is connected with one second belt pulley positioned on the same side through a connecting shaft.

The utility model at least comprises the following beneficial effects: according to the blackboard writing board, the first panel and the second panel which are horizontally pushed and pulled are arranged, the visual sense of upper and lower faults does not exist on the same panel on the same side of the blackboard writing board, more effective knowledge writing board writing is provided for students, the absorption efficiency of the students to knowledge points is improved, meanwhile, the height positions of the first panel and the second panel can be adjusted by moving the two transverse rods up and down, the requirements of teachers with different heights on the heights of the blackboard writing board are met, the blackboard writing operation in the teaching process is more humanized, and the teaching comfort of the teachers is improved.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

FIG. 1 is a schematic structural view of a push-pull blackboard according to one embodiment of the present utility model;

FIG. 2 is a schematic diagram of a second belt according to another embodiment of the present utility model;

FIG. 3 is an enlarged view of a portion of FIG. 1A;

fig. 4 is a schematic structural view of a push-pull blackboard according to another embodiment of the present utility model;

FIG. 5 is a schematic structural view of a push-pull blackboard according to another embodiment of the present utility model;

fig. 6 is a schematic structural view of a push-pull blackboard according to another embodiment of the present utility model;

fig. 7 is a schematic view of a wiping mechanism according to another embodiment of the present utility model.

Reference numerals illustrate: 11-horizontal part; 12-vertical part; 2-a cross bar; 21-a third chute; 31-a first panel; 32-a second panel; 33-grooves; 41-screw; 42-a first slider; 43-a first motor; 44-a first drive belt; 45-a first bevel gear; 46-a second bevel gear; 47-crank; 51-a second drive belt; 52-a second pulley; 531-a second slider; 532—a third slider; 54-connecting shaft; 61-wiping the lath; 62-fourth slider; 63-wiper; 64-springs; 65-a dust collection pipe; 66-dust collector.

Detailed Description

The present utility model is described in further detail below with reference to the drawings and examples to enable those skilled in the art to practice the utility model by referring to the description.

It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

The experimental methods described in the following embodiments are conventional methods unless otherwise indicated, and the reagents and materials are commercially available.

In the description of the present utility model, the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus are not to be construed as limiting the present utility model.

As shown in fig. 1 to 3, the vertical direction in fig. 1 is the vertical direction, and the horizontal direction is the width direction of the blackboard frame; the utility model provides a push-pull blackboard, which comprises:

the blackboard frame is fixedly arranged on the wall body;

the two cross bars 2 are horizontally arranged on the blackboard frame at intervals along the vertical direction, and two ends of each cross bar 2 are respectively connected with two sides of the blackboard frame in a sliding manner along the vertical direction;

the first panel 31 is arranged between the two cross bars 2 in parallel with the wall body, and the top and the bottom of the first panel 31 are respectively connected with the two cross bars 2 in a sliding manner along the width direction of the blackboard frame;

the second panel 32 is parallel to the wall body and arranged between the two cross bars 2 and behind the first panel 31, and the top and the bottom of the second panel 32 are respectively and slidably connected with the two cross bars 2 along the width direction of the blackboard frame.

In the technical scheme, the first panel 31 and the second panel 32 which are horizontally pushed and pulled are arranged, the visual sense of upper and lower faults does not exist on the same panel on the same side of the blackboard writing, more effective knowledge writing blackboard writing is provided for students, the absorption efficiency of the students to knowledge points is improved, meanwhile, the height positions of the first panel 31 and the second panel 32 can be adjusted by moving the two transverse rods 2 up and down, the requirements of teachers with different heights on the heights of the blackboard writing are met, the blackboard operation in the teaching process is more humanized, and the teaching comfort of the teachers is improved.

The utility model discloses a push-pull blackboard which comprises a blackboard frame fixedly arranged on a wall body, wherein the fixation of the blackboard frame can be realized by adopting the prior art means; two cross bars 2 are arranged on the blackboard frame at intervals along the vertical direction, and two ends of each cross bar 2 are connected with two sides of the blackboard frame in a sliding manner along the vertical direction, namely, the two cross bars 2 can move up and down along the vertical direction relative to the blackboard frame; the transmission mode setting of first panel 31 and second panel 32 adoption is parallel, fore-and-aft, with the difference of prior art lie in that first panel 31 and second panel 32 in this application are for controlling and arrange rather than arranging from top to bottom, to writing on every panel, there is not the visual sense of fault, improve the efficiency that the student studied, first panel 31 and second panel 32 all slide and locate on two horizontal poles 2, two horizontal poles 2 can reciprocate, and then drive first panel 31 and second panel 32 reciprocates, the height of adjustable blackboard, with teacher's height or blackboard book height, adjust the height of first panel 31 and second panel 32 for the more comfortable and humanized of teaching.

The first panel 31 and the second panel 32 are arranged, so that the requirement of a teacher on writing in a class of lessons is met, the writing area is prevented from being too small, and the teacher needs to continuously wipe a blackboard to finish teaching writing; flexibly adjusting the left and right positions of the first panel 31 and the second panel 32 according to the writing habit of a teacher; the first panel 31 and the second panel 32 can be pushed and pulled to the overlapped side position, video projection teaching can be performed on the vacated side, and the multiple effects of the blackboard teaching are improved.

In the practical teaching process, when students sitting in the classroom at the corners of two sides watch blackboard writing, the situation that the characters of one side of the blackboard writing cannot be clearly seen through reflection always exists, and therefore, the problem that the students sitting in the corners cannot clearly see part of the blackboard writing due to reflection can be well solved, the positions of the first panel 31 and the second panel 32 can be exchanged through left and right pushing and pulling of the first panel 31 or the second panel 32, and students in the classroom can clearly see the blackboard writing on the blackboard.

In practical application, grooves 33 which are convenient to push and pull can be formed in the front surfaces of the first panel 31 and the second panel 32, so that the flexibility of pushing and pulling the blackboard is improved.

In another technical scheme, the push-pull blackboard is of an inverted U-shaped frame structure, and two vertical parts 12 and horizontal parts 11 of the blackboard frame are hollow; the inner side of each vertical part 12 is provided with a strip-shaped first through hole along the vertical direction;

the push-pull blackboard also comprises a driving mechanism, which comprises:

two screws 41, one screw 41 is correspondingly arranged in one vertical part 12, each screw 41 is vertically arranged, and two ends of each screw 41 are respectively and rotatably connected with the top and the bottom of the corresponding vertical part 12;

two pairs of first sliding blocks 42 are arranged on one cross rod 2 correspondingly, two ends of each cross rod 2 respectively penetrate through strip-shaped first through holes of two vertical parts 12 to extend into the vertical parts 12 and are connected with one first sliding block 42, each first sliding block 42 is rotatably sleeved on an adjacent screw 41 in a threaded mode, and threaded holes connected with the corresponding screw 41 in a threaded mode are formed in the middle of each first sliding block 42.

In the above technical solution, the blackboard frame with an inverted U-shaped structure is provided with a hollow structure, and two opposite sides of the two vertical parts 12 are provided with first through holes, so as to improve the structure and space conditions for arranging the driving mechanism; each vertical portion 12 is internally and vertically rotated to provide a screw 41, each screw 41 can rotate around the axis of the screw 41, and each first slider 42 is rotationally sleeved on the screw 41, and the concrete implementation mode is as follows: the middle part of every first slider 42 is vertically link up and is provided with the screw hole that supplies screw 41 to pass, the screw hole sets up with screw 41's screw thread matching, the slider realizes rotating the silk with screw 41 and connects, the rotation of screw 41 around self axis can drive the slider and follow the removal of vertical direction, the synchronous rotation of two screws 41 can all sliders be synchronous upwards or downwards, and then the rotation of realization screw 41 drives two horizontal poles 2 and upwards or downwards remove in step, thereby realize the rising or the decline of first panel 31 and second panel 32.

In another technical scheme, the push-pull blackboard, the actuating mechanism still includes:

the first motor 43 is arranged at the bottom of one of the vertical parts 12, the output shaft of the first motor 43 is coaxially arranged with the corresponding screw 41, and the output shaft of the first motor 43 is connected with the corresponding screw 41;

two first belt pulleys are respectively positioned in the horizontal part 11, one first belt pulley is fixedly sleeved on the top of one screw 41, and the two first belt pulleys are linked through a first transmission belt 44.

In the above technical scheme, the first motor 43 is arranged to drive one of the screws 41 to rotate, and the two screws 41 are further synchronously and equidirectionally linked through belt transmission, as shown in fig. 1, the bottom of the right screw 41 is fixedly connected with the output shaft of the first motor 43, and an electric power mode is adopted, so that the physical burden of a teacher in the teaching process is reduced, the synchronism of the rotation of the two screws 41 is ensured, and the stability of the whole rising and falling of the first panel 31 and the second panel 32 is further ensured.

In practical application, can also cooperate to set up manual actuating mechanism, specifically: a first bevel gear 45 (located below any first sliding block 42) is fixedly sleeved on the lower portion of one screw 41, a second bevel gear 46 meshed with the first bevel gear 45 is arranged in one vertical portion 12, the central shaft of the second bevel gear 46 is connected with a horizontally arranged crank 47, the crank 47 penetrates out of the vertical portion 12, the vertical portion 12 does not limit rotation of the crank 47 around the central shaft of the second bevel gear 46, and when power fails, the crank 47 can be manually rotated to drive the two screws 41 to synchronously rotate in the same direction, so that the first panel 31 and the second panel 32 are driven to stably move up and down.

In another technical scheme, the push-pull blackboard is characterized in that two opposite side surfaces of the two cross bars 2 are respectively provided with a first chute and a second chute, the first chute is positioned in front of the second chute, each first chute and each second chute extend along the width direction of the blackboard frame, the top and the bottom of the first panel 31 are respectively and slidably arranged in the two first chutes, and the top and the bottom of the second panel 32 are respectively and slidably arranged in the two second chutes. The top and the bottom of the first panel 31 are respectively limited in two first sliding grooves, the top and the bottom of the second panel 32 are respectively limited in two second sliding grooves, the first panel 31 and the second panel 32 can be pushed and pulled along the width direction of the blackboard frame, the writing stability of the first panel 31 and the second panel 32 can be ensured, and the first panel 31 and the second panel 32 are prevented from sliding.

In another technical scheme, two opposite sides of the two cross bars 2 are respectively provided with a second driving belt 51, two ends of each second driving belt 51 are respectively sleeved with a second belt pulley 52, and each second belt pulley 52 is rotationally connected with the cross bar 2; the bottom of each first chute is provided with a strip-shaped second through hole along the width direction of the blackboard frame, a second sliding block is fixedly arranged on the front belt body of each second conveying belt, and one end of each second sliding block respectively penetrates through the corresponding second through hole and is fixedly connected with two ends (the top and the bottom) of the first panel 31; a third slider 532 is fixedly arranged on the rear belt body of each second conveyor belt, a strip-shaped third through hole is arranged at the bottom of each second chute along the width direction of the blackboard frame, and one end of each second slider 532 respectively penetrates through the corresponding third through hole and is fixedly connected with two ends (top and bottom) of the second panel 32.

The top and the bottom of first panel 31 extend respectively to in two first spouts, the second slider is T shape structure, big first one end and the preceding area body rigid coupling of second driving belt 51, little first one end passes the second through-hole and with first panel 31 rigid coupling, the top and the bottom of second panel 32 extend respectively to in two second spouts, the third slider 532 is T shape structure, big first one end and the rear area body rigid coupling of second driving belt 51, little first one end passes the third through-hole and with second panel 32 rigid coupling, the second slider is connected first panel 31 and the preceding area body of second driving belt 51, the third slider 532 is connected the rear area body of second panel 32 and second driving belt 51, the direction of rotation of two second driving belts 51 is the syntropy, and at every turn, set up two second driving belts 51, can make first panel 31 or second panel 32 under the exogenic action, or two second driving belts 51 synchronous with the same direction rotation, first panel 31 and second panel 32 looks motion or second panel 32 side-by side, the second panel 32 is blocked by side motion, the second panel can be moved to one of them side, the teacher has realized, the teacher has been realized, one of them is full to the relative motion, one of them side of the teacher, the teacher has realized, the relative motion of one of the panel, and one of them can be realized, one of them side is realized, and the teacher's is completely, and is moved to the opposite to the side.

By adopting the linkage of the second transmission belt 51, the space between the first panel 31 and the second panel 32 can be reduced as much as possible while ensuring the stability in the process of synchronously moving the first panel 31 and the second panel 32 reversely or oppositely.

In another embodiment, the push-pull blackboard is characterized in that one second pulley 52 is driven by a second motor, the second pulley 52 is connected with one second pulley 52 on the same side through a connecting shaft 54, and the diameter of the connecting shaft 54 is smaller than the distance between the first panel 31 and the second panel 32, so that the connecting shaft 54 can drive the two second pulleys 52 on the same side without interfering with the sliding of the first panel 31 and the second panel 32. The second motor is arranged to drive one of the second belt pulleys 52 to rotate, and an electric power mode is adopted, so that the physical burden in the teaching process of a teacher is reduced, the automation of the utility model is improved, for example, the second belt pulley 52 positioned on the right side above can be connected with the output shaft of the second motor to serve as a driving wheel, the second belt pulley 52 is linked with the second belt pulley 52 positioned on the right side below through the vertically arranged connecting shaft 54, the rotation synchronism of the upper and lower second transmission belts 51 is ensured, and the push-pull stability of the first panel 31 and the second panel 32 is further ensured.

As shown in fig. 4 to 7, the present utility model further includes a wiping mechanism including:

two fourth sliders 62 slidably connected to the front side surfaces of the two cross bars 2 in the width direction of the blackboard frame; the front side surface of each cross rod 2 is provided with a third chute 21 extending along the width direction of the blackboard frame, and two fourth sliding blocks 62 are respectively arranged in the two third chutes 21 in a sliding way, so that the fourth sliding blocks 62 are in sliding connection with the two cross rods 2;

a wiper strip 61 vertically disposed in front of the first panel 31, wherein two ends of the wiper strip 61 are respectively connected with two fourth sliders 62; the interior of the rubbing strip 61 is hollow; the outer side of the wiping strip 61 is provided with a handle;

a wiper 63 disposed between the wiper strip 61 and the first panel 31, the wiper 63 being connected to the wiper strip 61 by a plurality of springs 64; the length of the wiper 63 is smaller than the wiper strip 61 and equal to the height of the writing area of the first panel 31 and the second panel 32, and the wiper 63 can be closely attached to the first panel 31 and the second panel 32; any spring 64 is a compression spring 64, always in a compressed state;

a plurality of dust suction pipes 65 spaced apart from each other in the wiper 63, one end of each dust suction pipe 65 passing through the side surface of the wiper strip 61 and communicating with the inside of the wiper strip 61, and the dust suction pipe 65 being hermetically and slidably connected to the side surface of the wiper strip 61; the outer edge of one end of each dust collection pipe 65 is further provided with an annular baffle plate, so that the dust collection pipes 65 and the scrubbing strips 61 are prevented from falling off;

the dust collector 66 is slidably arranged on the lower cross rod 2, the dust collector 66 is fixedly connected with the lower fourth sliding block 62, and the dust inlet of the dust collector 66 is communicated with the inside of the scrubbing strip 61.

The wiping strip 61 is connected with the two cross bars 2 in a sliding way along the width direction of the blackboard frame, so that the wiping strip 61 can slide horizontally relative to the first panel 31 and the second panel 32, a handle is arranged at the outer side of the blackboard strip, the wiping strip 61 is conveniently pulled, a wiping piece 63 of felt is arranged at the inner side of the wiping strip 61, the inner side of the wiping piece 63 can be tightly attached to the first panel 31 or the second panel 32, the wiping piece 63 is driven to wipe the first panel 31 and the second panel 32 in the horizontal movement process of the wiping strip 61, the wiping piece 63 and the wiping strip 61 are connected through a plurality of springs 64, the wiping piece 63 is elastically clamped between the first panel 31/the second panel 32 and the wiping board strip 61, so that the inner side of the wiping piece 63 always keeps close contact with the first panel 31/the second panel 32 in the horizontal sliding process of the wiping board strip 61, the wiping effect is ensured, a plurality of dust collection pipes 65 are further arranged in the wiping piece 63 at intervals, each dust collection pipe 65 is communicated with the hollow inside of the wiping board strip 61, the hollow inside of the wiping board strip 61 is communicated with the dust collector 66, and in the wiping process, the dust collector 66 is started to timely suck chalk dust generated by wiping, so that the chalk dust is prevented from flying to the air to pollute the classroom environment and influence the health of teachers and students; in order to maintain the dust collection operation in the wiping process, in the technical scheme, each dust collection pipe 65 is excessively arranged, the dust collection pipe 65 is arranged in the wiping piece 63, one end of the dust collection pipe 65 horizontally extends forward to pass through the inner side surface of the wiping strip 61 and extends to the hollow inner area of the wiping strip 61, and a circular baffle is arranged on one end of the dust collection pipe 65 positioned in the wiping strip 61, so that the problem that when the wiping piece 63 relatively displaces relative to the wiping strip 61 in the process from the first panel 31 to the second panel 32, one end of the dust collection pipe 65 falls off from the interior of the wiping strip 61 to influence the normal operation of dust collection; the dust collector 66 is arranged on the lower cross rod 2, and the dust collector 66 is fixedly connected with the fourth sliding block 62 positioned below and is simultaneously in sliding connection with the cross rod 2 positioned below along the width direction of the blackboard frame, so that the dust collector 66 can horizontally slide along with the wiping strip 61 and the wiping piece 63, and the normal dust collection operation in the wiping process is ensured.

Taking fig. 4 to 6 as an example for specific explanation, when the first panel 31 and the second panel 32 are wiped, the first panel 31 is positioned at the left side, the second panel 32 is positioned at the right side, the starting position of the wiping mechanism is positioned at the left side, the wiping piece 63 is tightly attached to the first panel 31, the handle is manually pulled along the width direction of the blackboard frame, the wiping strip 61, the wiping piece 63 and the dust collector 66 are driven to integrally and horizontally move, meanwhile, the dust collector 66 is started, the wiping piece 63 firstly wipes the first panel 31 in the moving process, and the dust collector 66 can timely suck the wiped chalk dust, so that the pollution of the chalk dust to the classroom environment and the harm to human bodies are avoided; after the first panel 31 is wiped, the handle is pulled continuously, the wiping mechanism moves onto the second panel 32, the wiping piece 63 moves backwards relative to the wiping strip 61 under the action of the elastic force of the springs 64, and therefore the wiping piece 63 can be clung to the second panel 32, and the wiping mechanism moves to the right side of the second panel 32 to finish wiping the second panel 32; if a reverse wiping is required, (still the first panel 31 is positioned on the left side, the second panel 32 is positioned on the right side, and the wiping mechanism is positioned on the right side), the handle is pulled from the right side to the left side, the wiper 63 wipes the second panel 32 first, when moving to the junction of the second panel 32 and the first panel 31, the handle is pulled to the left with a little more force, and because the wiper 63 (felt) has a certain compressibility, the plurality of springs 64 are also provided with compressibility, the wiping mechanism can be pulled to the front of the first panel 31, the wiper 63 can be clung to the first panel 31, and the springs 64 are compressed further; in the above technical solution, the present application can quickly wipe the first panel 31 and the second panel 32; in practical application, two ends of the wiping strip 61 and the two fourth sliding blocks 62 can be detachably connected, and the wiping piece 63 can be regularly taken down and cleaned to ensure the wiping effect.

The number of equipment and the scale of processing described herein are intended to simplify the description of the present utility model. Applications, modifications and variations of the present utility model will be readily apparent to those skilled in the art.

Although embodiments of the present utility model have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the utility model would be readily apparent to those skilled in the art, and accordingly, the utility model is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.

Claims

1. Push-pull blackboard, its characterized in that includes:

the blackboard frame is fixedly arranged on the wall body;

the first panel is parallel to the wall body and arranged between the two cross bars, and the top and the bottom of the first panel are respectively connected with the two cross bars in a sliding manner along the width direction of the blackboard frame;

2. The push-pull blackboard according to claim 1, wherein the blackboard frame is of an inverted U-shaped frame structure, and two vertical parts and a horizontal part of the blackboard frame are hollow; the inner side of each vertical part is provided with a strip-shaped first through hole along the vertical direction;

the push-pull blackboard also comprises a driving mechanism, which comprises:

3. The push-pull blackboard according to claim 2, wherein the driving mechanism further includes:

4. The push-pull blackboard according to claim 1, wherein the two opposite sides of the two cross bars are respectively provided with a first chute and a second chute, the first chute is located in front of the second chute, each first chute and each second chute extends along the width direction of the blackboard frame, the top and the bottom of the first panel are respectively slidably disposed in the two first chutes, and the top and the bottom of the second panel are respectively slidably disposed in the two second chutes.

5. The push-pull blackboard according to claim 4, wherein two opposite sides of the two cross bars are respectively provided with a second driving belt, and two ends of each second driving belt are respectively sleeved with a second belt pulley; the bottom of each first chute is provided with a strip-shaped second through hole along the width direction of the blackboard frame, a second sliding block is fixedly arranged on the front belt body of each second conveyor belt, and one end of each second sliding block respectively penetrates through the corresponding second through hole and is fixedly connected with two ends of the first panel; a third sliding block is fixedly arranged on the rear belt body of each second conveying belt, a strip-shaped third through hole is formed in the bottom of each second sliding groove along the width direction of the blackboard frame, and one end of each third sliding block penetrates through the corresponding third through hole and is fixedly connected with two ends of the second panel.

6. A push-pull blackboard according to claim 5, wherein the rotation of one of the second pulleys is driven by a second motor, and the second pulley is connected to one of the second pulleys located on the same side by a connecting shaft.