CN215502042U

CN215502042U - Portable teaching blackboard

Info

Publication number: CN215502042U
Application number: CN202121335516.3U
Authority: CN
Inventors: 王玉香
Original assignee: Nanjing Vocational University of Industry Technology NUIT
Current assignee: Nanjing Vocational University of Industry Technology NUIT
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2022-01-14
Anticipated expiration: 2031-06-16

Abstract

The utility model discloses a portable teaching blackboard, which comprises a first support, a second support, a main writing board and a limit knob, wherein the first support comprises first support rods which are symmetrically arranged and a first connecting rod which is arranged between the two first support rods, the front end surface of each first support rod is provided with a chute, the side edge of each first support rod is provided with a threaded hole which is communicated with the chute, the second support comprises second support rods which are symmetrically arranged and a second connecting rod which is arranged between the two second support rods, the tops of the second support rods are correspondingly hinged with the tops of the first support rods one by one, the back surface of the main writing board is symmetrically provided with sliding blocks, the sliding blocks are correspondingly positioned in the chutes one by one and can slide along the inner walls of the chutes, the side edges of the sliding blocks are provided with a plurality of limit holes at equal intervals, and the limit knob is arranged in the threaded hole, the storage or carrying is not required to be dismantled, and the whole occupied area is small when the storage or carrying is carried out.

Description

Portable teaching blackboard

Technical Field

The utility model relates to the technical field of blackboards, in particular to a portable teaching blackboard.

Background

The blackboard is not particularly a black board, but is a plane which can be repeatedly written in the traditional sense, and the board is hard and is mainly used for teaching.

At present, in order to meet the requirements of different teaching fields, a plurality of movable blackboards appear.

However, the existing movable blackboard is mostly composed of a T-shaped assembly bracket and a writing board arranged on the bracket, when the movable blackboard is not used and is in an idle state, the whole occupied area is large, the movable blackboard is inconvenient to carry and transport, and although the movable blackboard can be detached, stored or carried, a long time is wasted for assembly when the movable blackboard is used.

SUMMERY OF THE UTILITY MODEL

This section is for the purpose of summarizing some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the utility model.

The present invention has been made in view of the above and/or problems occurring in the conventional mobile blackboards.

Therefore, the utility model aims to provide a portable teaching blackboard which does not need to be dismantled for storage or carrying and occupies a small area when being stored or carried.

To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions:

a portable teaching blackboard, comprising:

the first support comprises first support rods which are symmetrically arranged and a first connecting rod which is arranged between the two first support rods, the front end surface of each first support rod is provided with a sliding groove, and the side edge of each first support rod is provided with a threaded hole which is communicated with the sliding groove;

the second support comprises second support rods which are symmetrically arranged and a second connecting rod which is arranged between the two second support rods, and the tops of the second support rods are hinged with the tops of the first support rods in a one-to-one correspondence manner;

the back of the main writing board is symmetrically provided with sliding blocks, the sliding blocks are correspondingly positioned in the sliding grooves one by one and can slide along the inner walls of the sliding grooves, and a plurality of limiting holes are formed in the side edges of the sliding blocks at equal intervals;

the limiting knob is arranged in the threaded hole;

when any one of the limiting holes is coaxial with the threaded hole, the limiting knob can extend into the limiting hole which is coaxial with the threaded hole in the threaded hole.

As a preferable scheme of the portable teaching blackboard, the top of the first support rod is provided with a first hinge ring, the top of the second support rod is provided with a second hinge ring, the first hinge ring and the second hinge ring are coaxially arranged, and a shaft rod is inserted into a shaft hole of the first hinge ring and a shaft hole of the second hinge ring.

As a preferable scheme of the portable teaching blackboard, the portable teaching blackboard further comprises a pull rope, wherein one end of the pull rope is wound on the first connecting rod, and the other end of the pull rope is wound on the second connecting rod.

As a preferable scheme of the portable teaching blackboard, the portable teaching blackboard further comprises an extension writing board, slots are formed in two side edges of the main writing board, and the extension writing board is correspondingly inserted into the slots and can slide in the slots.

As a preferable aspect of the portable teaching blackboard according to the present invention, the outer side of the extension writing board has a baffle, and the inner side of the extension writing board has a stopper for preventing the extension writing board from slipping out of the slot.

Compared with the prior art, the utility model has the beneficial effects that: this kind of portable teaching blackboard is when using, support first support and the rotatory separation of second support subaerial to main clipboard removes to adjust to suitable height and writes relatively first support, when carrying or accomodating, with the rotatory alignment of first support and second support, and remove main clipboard and adjust to the top alignment position with the second support, make this kind of portable teaching blackboard warp the slabby that becomes the rectangle, conveniently carry and store, reduced area.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise. Wherein:

FIG. 1 is a schematic view showing a first embodiment of a portable teaching blackboard according to the present invention;

FIG. 2 is a schematic view showing a state of storing or carrying a portable teaching blackboard according to a first embodiment of the present invention;

FIG. 3 is an exploded view of a first embodiment of a portable teaching blackboard according to the present invention;

fig. 4 is a partial structural schematic view of a second embodiment of the portable teaching blackboard according to the utility model.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Next, the present invention will be described in detail with reference to the drawings, wherein for convenience of illustration, the cross-sectional view of the device structure is not enlarged partially according to the general scale, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The utility model provides a portable teaching blackboard which does not need to be dismantled for storage or carrying, and has small overall occupied area during storage or carrying.

Fig. 1 to 3 are schematic structural views illustrating a first embodiment of a portable teaching blackboard according to the present invention, and referring to fig. 1 to 3, a main body of the portable teaching blackboard according to the present embodiment includes a first bracket 100, a second bracket 200, a main writing board 300, and a limit knob 400.

The first support 100 comprises first support rods 110 symmetrically arranged and a first connecting rod 120 arranged between the two first support rods 110, a sliding groove 110a is formed in the front end face of each first support rod 110, the sliding groove 110a is used for mounting the main writing board 300 and enables the main writing board 300 to move up and down relative to the first support 100, and a threaded hole 110b communicated with the sliding groove 110a is formed in the side edge of each first support rod 110 and used for limiting the main writing board 300 through being matched with a limiting knob 400.

The second support 200 comprises symmetrically arranged second support rods 210 and a second connecting rod 220 arranged between the two second support rods 210, and the tops of the second support rods 210 are hinged with the top of the first support rod 110 in a one-to-one correspondence manner, so that when the portable teaching blackboard is used, the first support 100 and the second support 200 can stand on the ground to support the main writing board 300, and when the portable teaching blackboard is stored or carried, the first support 100 and the second support 200 can rotate to be in a parallel state, and the occupied area is reduced. Specifically, the connection of the first bracket 100 and the second bracket 200 is as follows: the top of the first strut 110 has a first hinge ring 110c, the top of the second strut 210 has a second hinge ring 210a, the first hinge ring 110c and the second hinge ring 210a are coaxially arranged, and a shaft is inserted into the shaft holes of the first hinge ring 110c and the second hinge ring 210 a. And in order to improve the standing stability of the first bracket 100 and the second bracket 200 when in use, the portable teaching blackboard further comprises a pulling rope, wherein one end of the pulling rope is wound on the first connecting rod 120, and the other end of the pulling rope is wound on the second connecting rod 220.

The back of the main writing board 300 is symmetrically provided with the sliding blocks 310, the sliding blocks 310 are correspondingly positioned in the sliding grooves 110a one to one and can slide along the inner walls of the sliding grooves 110a, and a plurality of limiting holes 310a are formed in the side edges of the sliding blocks 310 at equal intervals.

The stop knob 400 is rotatably disposed in the threaded hole 110b, and when any one of the stop holes 310a is coaxial with the threaded hole 110b, the stop knob 400 may be rotatably extended in the threaded hole 110b into the stop hole 310a coaxial with the threaded hole 110 b.

Referring to fig. 1 to 3, in a portable teaching blackboard according to this embodiment, in use, a first stand 100 and a second stand 200 are rotatably supported on the ground, a slider 310 of a main writing board 300 is slid in a sliding groove 110a, the main writing board 300 is moved and adjusted to a proper height with respect to the first stand 100 to write, a limit knob 400 is turned and extended into a corresponding limit hole 310a in a screw hole 110b to fix the main writing board 300, and the portable teaching blackboard is in a state as shown in fig. 1, and when the portable teaching blackboard is carried or stored, the first stand 100 and the second stand 200 are rotatably aligned, the main writing board 300 is moved and adjusted to a position aligned with the top of the first stand 100 to deform the portable teaching blackboard into a rectangular plate shape, and the portable teaching blackboard is in a state as shown in fig. 2, is convenient to carry and store, and reduces the occupied area.

Fig. 4 is a partial schematic structural view of a second embodiment of a portable teaching blackboard according to the present invention, please refer to fig. 4, and unlike the above embodiments, in the present embodiment, the portable teaching blackboard further includes an extension writing board 500, slots are formed on both sides of the main writing board 300, the extension writing board 500 is correspondingly inserted into the slots and can slide in the slots, in the above embodiments, the area of the main writing board 300 is limited, and after the main writing board 300 is fully written with a word, frequent wiping is required, which affects teaching efficiency, and for this reason, by arranging the slidable extension writing boards 500 on both sides of the main writing board 300, writing area can be increased, and teaching efficiency of teachers can be improved. Preferably, in the present embodiment, the outer side of the extension writing board 500 has a baffle 510, and the inner side of the extension writing board 500 has a stopper for preventing the extension writing board from slipping out of the insertion groove.

While the utility model has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the various features of the disclosed embodiments of the utility model may be used in any combination, provided that no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. A portable teaching blackboard, comprising:

the first support (100) comprises first support rods (110) which are symmetrically arranged and a first connecting rod (120) which is arranged between the two first support rods (110), the front end surface of each first support rod (110) is provided with a sliding groove (110 a), and the side edge of each first support rod (110) is provided with a threaded hole (110 b) which is communicated with the sliding groove (110 a);

the second bracket (200) comprises second supporting rods (210) which are symmetrically arranged and a second connecting rod (220) which is arranged between the two second supporting rods (210), and the tops of the second supporting rods (210) are hinged with the tops of the first supporting rods (110) in a one-to-one correspondence manner;

the back of the main writing board (300) is symmetrically provided with sliding blocks (310), the sliding blocks (310) are correspondingly positioned in the sliding grooves (110 a) one by one and can slide along the inner walls of the sliding grooves (110 a), and a plurality of limiting holes (310 a) are formed in the side edges of the sliding blocks (310) at equal intervals;

a limit knob (400) disposed within the threaded bore (110 b);

when any limiting hole (310 a) is coaxial with the threaded hole (110 b), the limiting knob (400) can extend into the limiting hole (310 a) coaxial with the threaded hole (110 b) in a rotating mode.

2. A portable teaching blackboard according to claim 1, wherein the top of the first support rod (110) has a first hinge ring (110 c), the top of the second support rod (210) has a second hinge ring (210 a), the first hinge ring (110 c) and the second hinge ring (210 a) are coaxially arranged, and a shaft rod is inserted into the shaft holes of the first hinge ring (110 c) and the second hinge ring (210 a).

3. The portable teaching blackboard according to claim 1, further comprising a pulling rope, wherein one end of the pulling rope is wound on the first connecting rod (120), and the other end of the pulling rope is wound on the second connecting rod (220).

4. The portable teaching blackboard according to claim 1, further comprising an extension writing board (500), wherein slots are formed in two side edges of the main writing board (300), and the extension writing board (500) is correspondingly inserted into the slots and can slide in the slots.

5. A portable teaching blackboard according to claim 4, wherein the outer side of the extension writing board (500) has a baffle (510), and the inner side of the extension writing board (500) has a stopper preventing it from slipping out of the slot.