CN219920627U - Teaching blackboard convenient to drawing - Google Patents

Abstract

The utility model provides a teaching blackboard convenient for drawing, which comprises two groups of symmetrically arranged brackets, wherein a turnover foldable blackboard is correspondingly arranged between the upper parts of the two groups of brackets, two sides of the blackboard are correspondingly provided with bumps, the bumps are correspondingly provided with mounting grooves, elastically telescopic limit posts are correspondingly arranged in the mounting grooves, slots are correspondingly arranged on the inner side walls of the brackets, ejection holes are correspondingly arranged at the bottoms of the slots, ejector rods can be slidably inserted into the ejection holes, and the limit posts are correspondingly inserted into the slots; a rotatable and detachable connecting rod is correspondingly arranged between the lower parts of the two groups of brackets, a cam is correspondingly arranged on the connecting rod, and the lower part of the blackboard correspondingly abuts against the cam. The whole teaching blackboard can be quickly disassembled, can be turned over and folded, is quite convenient to carry out, can be effectively placed in a trunk of a car, is ingenious in whole design, can be adjusted in deflection angle, and is high in practicability.

Description

Teaching blackboard convenient to drawing

Technical Field

The utility model belongs to the technical field of blackboards, and particularly relates to a teaching blackboard convenient for drawing.

Background

The teaching blackboard is not a black writing board for teaching, and is a plane board capable of repeatedly writing in the traditional sense. The teaching blackboard has the advantages of hard board surface, no reflection, wear resistance, no falling off, no fading, durability, good writing hand feeling, clear writing, easy writing and erasing, and the like, and is widely applicable to various places such as teaching offices, enterprise training, and the like.

Common types of teaching blackboards include green boards and white boards, which are classified into planar blackboards, stand writing boards, and the like by structure. The common plane blackboard is usually directly arranged and fixed on a wall, a user can write and draw on the blackboard, and the like, and the blackboard is inconvenient to move, so that a bracket writing board is arranged. The common support writing board is to correspondingly install the blackboard on the support, and to use the support to stand on the ground, the specific structure of the blackboard can be shown in fig. 5, and the blackboard can be moved to the corresponding position according to the transition of a use place, so that the blackboard is generally used in training schools, enterprises and public institutions and the like, and is popular with vast users. The bracket writing board belongs to one kind of teaching blackboard, but the existing teaching blackboard still has inconvenience in use, as shown in fig. 5, as the whole board surface is directly installed and fixed on the bracket through screws, the whole volume is relatively large, the whole board surface occupies very much space, if the whole board surface is carried out, the whole board surface is inconvenient, cannot be well placed in a trunk of a car, and is inconvenient to be brought out of the room for drawing and writing; and if damages such as scratches appear on the blackboard surface and the maintenance and replacement are needed, the installation and the disassembly are also inconvenient. Accordingly, there is a need for an improvement to solve the above-mentioned problems.

Disclosure of Invention

1. Object of the utility model

According to the teaching blackboard convenient to draw, the whole teaching blackboard can be quickly disassembled, the whole teaching blackboard is quite convenient to mount and dismount, and the whole blackboard can be overturned and folded, so that the teaching blackboard is quite convenient to carry out, the occupied space of the teaching blackboard is greatly reduced, the teaching blackboard can be effectively placed in a trunk of a car, maintenance and replacement of the blackboard are quite convenient, the whole teaching blackboard is ingenious in design, the deflection angle of the blackboard can be effectively adjusted, and the practicability is high.

2. Technical proposal

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows: the utility model provides a teaching blackboard convenient to drawing, includes two sets of symmetrically set up's support, installs the folding blackboard that can overturn between two sets of support upper portions correspondence, the both sides of blackboard correspond and are equipped with the lug, correspond on the lug and seted up the mounting groove, but install elastic telescopic spacing post in the mounting groove corresponds, correspond the position on the support inside wall and be equipped with the slot, the slot tank bottom corresponds and is equipped with the ejecting hole, but ejecting downthehole slidable has inserted the ejector pin, spacing post corresponds to insert in the slot to accessible ejector pin is ejecting; a rotatable and detachable connecting rod is correspondingly arranged between the lower parts of the two groups of brackets, a cam is correspondingly arranged on the connecting rod, and the lower part of the blackboard correspondingly abuts against the cam.

The further improvement is that: the blackboard consists of two blackboard bodies which are connected with each other through a hinge shaft in a rotating way.

The further improvement is that: the two cams are correspondingly arranged on the connecting rod and respectively lean against the middle parts of the bottom ends of the two blackboard bodies.

The further improvement is that: the end part of the limit post is correspondingly connected with the bottom of the mounting groove through a first spring.

The further improvement is that: the outer end part of the ejector rod is correspondingly provided with a fixed head, and the fixed head is correspondingly connected with the outer side wall of the bracket through a second spring.

The further improvement is that: threaded holes are formed in corresponding positions on the support, fixing screws are correspondingly arranged in the threaded holes, grooves are correspondingly formed in two ends of the connecting rod, and the fixing screws can be fastened in the grooves in a jacking mode.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

according to the utility model, the turnover foldable blackboard is arranged, the limit posts which can be elastically stretched are arranged in the mounting grooves on two sides of the blackboard by the first springs, and the ejector rods which can be slidably stretched are arranged in the ejection holes at the bottoms of the two groups of bracket slot grooves, so that when the blackboard surface is scratched and the like and needs to be maintained and replaced, the installation and the disassembly of the blackboard can be easily realized by directly pressing the ejector rods through the elastic fit of the limit posts, and the ejector rods can also automatically pop out and reset under the elastic action of the second springs, so that the whole use is very convenient. And because the blackboard and the two groups of brackets are all detachably mounted together, the whole teaching blackboard can be quickly disassembled, and if the teaching blackboard needs to be carried outside, the blackboard is directly disassembled by pressing the ejector rod and is turned over and folded, the whole teaching blackboard is very convenient to carry, the occupied space of the teaching blackboard is greatly reduced, and the teaching blackboard is conveniently and effectively placed in a trunk of a car.

In addition, the lower parts of the two groups of brackets are provided with the rotatable and detachable connecting rods through the fixing screws, and the connecting rods are provided with the cams, so that the lower parts of the blackboards can correspondingly lean against the cams, and the rotation of the connecting rods drives the cams to rotate, so that the deflection angle of the blackboards is adjusted, thereby facilitating the writers to draw on the blackboards.

Drawings

FIG. 1 is a schematic diagram of the whole structure of a teaching blackboard of the present utility model;

FIG. 2 is a schematic view of the overall structure of another view angle of the teaching blackboard of the present utility model;

FIG. 3 is a schematic cross-sectional enlarged view of the cooperative installation of the spacing posts of the present utility model;

FIG. 4 is an enlarged schematic cross-sectional view of the end of the connecting rod of the present utility model;

fig. 5 is a schematic structural view of a conventional teaching blackboard.

Reference numerals

1. A bracket; 101. a slot; 102. an ejection hole; 103. a threaded hole; 2. a blackboard; 201. a bump; 202. a mounting groove; 3. a limit column; 4. a first spring; 5. a push rod; 501. a fixed head; 6. a second spring; 7. a hinge shaft; 8. a connecting rod; 801. a groove; 9. a fixing screw; 10. a cam.

Detailed Description

In order that the utility model may be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which, however, the utility model may be embodied in many different forms and are not limited to the embodiments described herein, but are instead provided for the purpose of providing a more thorough and complete disclosure of the utility model.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; the terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs; the terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model; the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Examples

Referring to fig. 1-4, the teaching blackboard convenient for drawing in this embodiment includes two sets of symmetrically arranged brackets 1, the brackets 1 are in a T-shaped structure, a foldable blackboard 2 capable of being turned over is correspondingly installed between the upper parts of the two sets of brackets 1, the blackboard 2 is composed of two blackboard bodies, the two blackboard bodies are rotationally connected through a hinge shaft 7, that is, the two blackboard bodies can be turned over and folded together around the hinge shaft 7. According to the embodiment, the turnover foldable blackboard 2 is arranged, so that the turnover foldable blackboard can be folded when the vehicle is carried out, the occupied space of the turnover foldable blackboard is reduced, and the turnover foldable blackboard is convenient to place in a trunk of a sedan. The front and back sides of the two blackboard bodies can be written, so that when one side board surface is damaged, the other side board surface can be replaced to continue writing, and the overall utilization rate of the blackboard is improved. Casters (not shown) may be mounted on both sides of the bottom of the two sets of brackets 1 to facilitate movement thereof.

The two sides of the blackboard 2 are respectively provided with a bump 201, the bumps 201 are correspondingly provided with mounting grooves 202, the mounting grooves 202 are internally correspondingly provided with elastically telescopic limit posts 3, the end parts of the limit posts 3 are correspondingly connected with the bottoms of the mounting grooves 202 through first springs 4, and the elastic telescopic of the limit posts 3 is realized through the first springs 4. The inner side wall of the bracket 1 is provided with a slot 101 at a corresponding position, the bottom of the slot 101 is correspondingly provided with an ejection hole 102, and the ejection rod 5 is slidably inserted in the ejection hole 102. The limiting column 3 can be correspondingly inserted into the slot 101 under the elastic action of the first spring 4 and can be ejected out through the ejector rod 5. The limit post 3 can also rotate in the slot 101. The outer end part of the ejector rod 5 is correspondingly provided with a fixed head 501, and the fixed head 501 is correspondingly connected with the outer side wall of the bracket 1 through a second spring 6. When the second spring 6 is in the original length state, the ejector rod 5 and the fixing head 501 can automatically pop up outwards to the state shown in fig. 3, and the ejector rod 5 can slide inwards by pressing the fixing head 501, so that the limit post 3 can be ejected out of the slot 101, and the installation and the disassembly of the blackboard 2 are realized. In the embodiment, through the arrangement of the limiting post 3, the first spring 4, the ejector rod 5, the second spring 6 and other components, the elastic fit of the limiting post 3 is utilized, the ejector rod 5 is directly pressed to easily realize the installation and the disassembly of the blackboard 2, so that the blackboard 2 is maintained and replaced, the ejector rod 5 can automatically and outwards pop up and reset under the elastic action of the second spring 6, and the whole use is very convenient.

A rotatable and detachable connecting rod 8 is correspondingly arranged between the lower parts of the two groups of brackets 1. Specifically, the screw hole 103 has been seted up to the corresponding position on the support 1, and set screw 9 is installed to this screw hole 103 interior correspondence, the both ends of connecting rod 8 all correspond and are equipped with recess 801, set screw 9 can be fixed on the recess 801 tank bottom in a top fastening, realizes the demountable installation of connecting rod 8 through set screw 9, unscrews set screw 9, alright carry out the rotation of connecting rod 8. The connecting rod 8 is correspondingly provided with a cam 10, and the lower part of the blackboard 2 correspondingly abuts against the cam 10. Specifically, the two cams 10 are correspondingly arranged on the connecting rod 8 and respectively lean against the middle parts of the bottom ends of the two blackboard bodies, and the two cams 10 are arranged, so that the two blackboard bodies are better supported at the bottoms of the two blackboard bodies. In the embodiment, the fixing screw 9 is unscrewed by arranging the connecting rod 8, the cam 10 and other parts, and the cam 10 is driven to rotate by utilizing the rotation of the connecting rod 8, so that the deflection angle of the blackboard 2 can be adjusted, and a writer can conveniently draw on the blackboard 2. Because two sets of supports 1 are all detachably mounted with blackboard 2 and connecting rod 8 together, this teaching blackboard wholly can disassemble fast, if need carry its outward, directly pull down blackboard 2 and connecting rod 8 to fold blackboard 2 upset, its whole portable very conveniently, greatly reduced its occupation space, convenient effective place is in the car trunk, its whole convenient to use, the practicality is strong. It should be noted that the connecting rod 8 may also be an existing telescopic rod. The cam 10 may be made of a lightweight material, and the cam 10 may be replaced by an eccentric wheel, so long as the angular adjustment of the blackboard 2 is possible.

The foregoing examples merely illustrate certain embodiments of the utility model and are described in more detail and are not to be construed as limiting the scope of the utility model; it should be noted that it is possible for a person skilled in the art to make several variants and modifications without departing from the concept of the utility model, all of which fall within the scope of protection of the utility model; accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (6)

1. A teaching blackboard convenient to drawing, its characterized in that: the novel blackboard comprises two groups of symmetrically arranged brackets (1), wherein a turnover foldable blackboard (2) is correspondingly arranged between the upper parts of the two groups of brackets (1), two sides of the blackboard (2) are correspondingly provided with protruding blocks (201), the protruding blocks (201) are correspondingly provided with mounting grooves (202), the mounting grooves (202) are internally correspondingly provided with elastically telescopic limit posts (3), the corresponding positions of the inner side walls of the brackets (1) are provided with slots (101), the bottoms of the slots (101) are correspondingly provided with ejection holes (102), ejector rods (5) are slidably inserted into the ejection holes (102), and the limit posts (3) are correspondingly inserted into the slots (101) and can be ejected through the ejector rods (5); a rotatable and detachable connecting rod (8) is correspondingly arranged between the lower parts of the two groups of brackets (1), a cam (10) is correspondingly arranged on the connecting rod (8), and the lower part of the blackboard (2) correspondingly abuts against the cam (10).

2. A teaching blackboard for facilitating drawing according to claim 1, characterized in that: the blackboard (2) consists of two blackboard bodies which are rotationally connected through a hinge shaft (7).

3. A teaching blackboard for facilitating drawing according to claim 2, characterized in that: the two cams (10) are correspondingly arranged on the connecting rod (8) and respectively lean against the middle parts of the bottom ends of the two blackboard bodies.

4. A teaching blackboard for facilitating drawing according to claim 1, characterized in that: the end part of the limit column (3) is correspondingly connected with the bottom of the mounting groove (202) through a first spring (4).

5. A teaching blackboard for facilitating drawing according to claim 1, characterized in that: the outer side end part of the ejector rod (5) is correspondingly provided with a fixing head (501), and the fixing head (501) is correspondingly connected with the outer side wall of the bracket (1) through a second spring (6).

6. A teaching blackboard for facilitating drawing according to claim 1, characterized in that: threaded holes (103) are formed in corresponding positions on the support (1), fixing screws (9) are correspondingly arranged in the threaded holes (103), grooves (801) are correspondingly formed in two ends of the connecting rod (8), and the fixing screws (9) can be fastened in the grooves (801) in a jacking mode.