CN215341445U - Demonstration board - Google Patents

Abstract

The utility model discloses a demonstration board, belonging to the field of demonstration boards, and the demonstration board comprises a bottom board, wherein the upper end of the bottom board is fixedly connected with a support column, one end of the support column, which is far away from the bottom board, is provided with a chute, the chute is movably connected with a drive rod, one end of the drive rod, which is far away from the support column, is fixedly connected with an annular support block, one end of the annular support block, which is far away from the drive rod, is provided with a rolling groove, the rolling groove is movably connected with a connecting rod, and one end of the connecting rod, which is far away from the annular support block, is fixedly connected with a display screen; the inner wall swing joint of spout has a plurality of first balls, and its structure is light and handy, is convenient for carry to in the different classrooms in order to make things convenient for the classroom teaching, and is convenient for the display screen angle of adjustment in vertical plane through the connecting rod to the more clear observation display screen of student of being convenient for, it is rotatory through the initiative pole simultaneously, the display screen of being convenient for is at horizontal plane internal rotation, and then the student of being convenient for learns.

Description

Demonstration board

Technical Field

The utility model relates to the field of demonstration boards, in particular to a demonstration board.

Background

English translation refers to an activity of expressing english in another language or expressing english in another language with respect to each other.

English is a relatively important subject in China, the importance of English exceeds other subjects in junior high school teaching to a certain extent, no matter in middle school or high school, English determines the schools of students for several years in the future to a great extent, therefore, English translation demonstration boards are purchased in many junior high schools or junior high schools, and some junior high schools or junior high schools in county-level cities may only have a small number of English translation demonstration boards, so that the device is required to be carried frequently, or the angle of the device is required to be adjusted frequently during teaching so as to facilitate observation of students, so that an English translation demonstration board convenient to carry and adjust the angle is urgently needed.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

Aiming at the problems in the prior art, the utility model aims to provide a demonstration board which is light and handy in structure, convenient to transport to different classrooms for facilitating classroom teaching, convenient for a student to observe a display screen more clearly by adjusting the angle of the display screen in a vertical plane through a connecting rod, and convenient for the display screen to rotate in a horizontal plane through rotation of an active rod, thereby facilitating the study of the student.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A demonstration board comprises a bottom board, wherein a support column is fixedly connected to the upper end of the bottom board, a sliding groove is formed in one end, away from the bottom board, of the support column, a driving rod is movably connected to the sliding groove, an annular support block is fixedly connected to one end, away from the support column, of the driving rod, a rolling groove is formed in one end, away from the driving rod, of the annular support block, the rolling groove is movably connected with a connecting rod, and a display screen is fixedly connected to one end, away from the annular support block, of the connecting rod;

the inner wall swing joint of spout has a plurality of first balls, the one end fixedly connected with arc sliding plate that the initiative pole set up in the spout, arc sliding plate and first ball looks adaptation.

Further, the arc wall has been seted up to the one end that the active lever is close to the support column, the lower extreme fixedly connected with semi-ring shape support column of display screen, semi-ring shape support column and arc wall looks adaptation, the semi-ring shape support column of being convenient for is at the arc wall internal rotation to be convenient for adjust the angle in the vertical plane of display screen.

Further, the inner wall of arc wall is provided with bar card line, the lateral wall of semi-annular support column set up with the draw-in groove of bar card line looks adaptation, when being convenient for promote the semi-annular support column hard, the draw-in groove and the bar card line joint of semi-annular support column lateral wall to fix the display screen, and then liberation teacher's both hands are convenient for study simultaneously and observe the study.

Further, the one end fixedly connected with second ball that the display screen was kept away from to the connecting rod, second ball and rolling slot looks adaptation, the display screen of being convenient for when vertical plane rotates, the connecting rod supports the display screen, passes through the second ball card simultaneously in the rolling slot, prevents that the connecting rod from droing.

Furthermore, one end of the bottom plate, which is far away from the supporting column, is fixedly connected with a universal wheel, and the pushing device is convenient to move through the universal wheel.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages that:

(1) the utility model has light structure, is convenient to be transported to different classrooms to facilitate classroom teaching, is convenient for the angle adjustment of the display screen in a vertical plane through the connecting rod, thereby facilitating the clearer observation of the display screen by students, and is convenient for the display screen to rotate in a horizontal plane through the rotation of the driving rod, thereby facilitating the study of the students.

(2) The inner wall of arc wall is provided with the bar card line, and the lateral wall of semiannular support column is seted up the draw-in groove with bar card line looks adaptation, and when being convenient for promote the semiannular support column hard, the draw-in groove and the bar card line joint of semiannular support column lateral wall to fix the display screen, and then liberation teacher's both hands are convenient for study simultaneously and are observed the study.

Drawings

FIG. 1 is a structural cross-sectional view of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is an enlarged view of the portion B in fig. 1.

The reference numbers in the figures illustrate:

1. a base plate; 101. a universal wheel; 2. a support pillar; 3. a chute; 301. a first ball bearing; 4. a driving lever; 401. an arc-shaped sliding plate; 402. strip-shaped clamping lines; 403. a semi-annular support column; 5. an annular support block; 6. rolling a groove; 7. a connecting rod; 701. a second ball bearing; 8. a display screen.

Detailed Description

The drawings in the embodiments of the utility model will be combined; the technical scheme in the embodiment of the utility model is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the utility model; but not all embodiments, are based on the embodiments of the utility model; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-3, a demonstration board comprises a bottom plate 1, wherein a universal wheel 101 is fixedly connected to one end of the bottom plate 1, which is far away from a support column 2, and is convenient for a pushing device to move through the universal wheel 101, the support column 2 is fixedly connected to the upper end of the bottom plate 1, a sliding groove 3 is formed in one end, which is far away from the bottom plate 1, of the support column 2, the sliding groove 3 is movably connected with a driving rod 4, the driving rod 4 rotates in the sliding groove 3, an annular support block 5 is fixedly connected to one end, which is far away from the support column 2, of the driving rod 4, a rolling groove 6 is formed in one end, which is far away from the driving rod 4, of the annular support block 5, the rolling groove 6 is movably connected with a connecting rod 7, the connecting rod 7 rotates in the rolling groove 6, and one end, which is far away from the annular support block 5, of the connecting rod 7 is fixedly connected with a display screen 8;

the inner wall swing joint of spout 3 has a plurality of first balls 301, and the one end fixedly connected with arc sliding plate 401 that active rod 4 set up in spout 3, arc sliding plate 401 and first ball 301 looks adaptation.

Arc groove 402 has been seted up to the one end that active lever 4 is close to support column 2, and the lower extreme fixedly connected with semi-ring shape support column 403 of display screen 8, semi-ring shape support column 403 and arc groove 402 looks adaptation, the semi-ring shape support column 403 of being convenient for is at arc groove 402 internal rotation to be convenient for adjust the angle in the vertical plane of display screen 8.

The inner wall of arc wall 402 is provided with the bar card line, and the draw-in groove with bar card line looks adaptation is seted up to the lateral wall of semi-annular support column 403, and when being convenient for promote semi-annular support column 403 hard, the draw-in groove and the bar card line joint of semi-annular support column 403 lateral wall to fix display screen 8, and then liberation teacher's both hands, be convenient for simultaneously study and observe the study.

One end fixedly connected with second ball 701 that display screen 8 was kept away from to connecting rod 7, second ball 701 and 6 looks adaptations of slot rolling, and the display screen 8 of being convenient for when vertical plane rotated, connecting rod 7 supported display screen 8, blocked in slot rolling 6 through second ball 701 simultaneously, prevented that connecting rod 7 from droing.

When the device is used, a teacher or a technician pushes the device into a classroom through the universal wheel 101, then pushes the display screen 8 in the left-right direction, the display screen 8 drives the driving rod 4 to rotate in the sliding groove 3 through the semi-annular supporting column 403, when the proper angle is adjusted, the display screen 8 is loosened, meanwhile, the display screen 8 is pushed forcibly in the up-down direction, the display screen 8 slides in the arc-shaped groove 402 through the semi-annular supporting column 403, the display screen 8 pushes the connecting rod 7 to slide in the rolling groove 6, the vertical direction angle of the display screen 8 is adjusted, when the device is pushed to the proper position, no force is applied to the display screen 8, so that the clamping groove on the side wall of the semi-annular supporting column 403 is clamped on the strip-shaped clamping line on the inner wall of the arc-shaped groove 402, the display screen 8 is fixed, the display screen 8 is prevented from offsetting, meanwhile, the second ball 701 reduces the friction force when the connecting rod 7 rotates in the rolling groove 6, the device is light and handy in structure, be convenient for carry in the different classrooms with making things convenient for the classroom teaching, and be convenient for display screen 8 angle of adjustment in vertical plane through connecting rod 7 to be convenient for the more clear observation display screen 8 of student, it is rotatory through active lever 4 simultaneously, the display screen 8 of being convenient for is at the horizontal plane internal rotation, and then the student of being convenient for learns.

The above; but are merely preferred embodiments of the utility model; the scope of the utility model is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the utility model are equally replaced or changed; are intended to be covered by the scope of the present invention.

Claims (5)

1. A demonstration board comprising a base plate (1), characterized in that: the upper end of the bottom plate (1) is fixedly connected with a support column (2), one end, far away from the bottom plate (1), of the support column (2) is provided with a sliding groove (3), the sliding groove (3) is movably connected with a driving rod (4), one end, far away from the support column (2), of the driving rod (4) is fixedly connected with an annular support block (5), one end, far away from the driving rod (4), of the annular support block (5) is provided with a rolling groove (6), the rolling groove (6) is movably connected with a connecting rod (7), and one end, far away from the annular support block (5), of the connecting rod (7) is fixedly connected with a display screen (8);

the inner wall of the sliding groove (3) is movably connected with a plurality of first balls (301), the driving rod (4) is arranged at one end of the sliding groove (3) and fixedly connected with an arc-shaped sliding plate (401), and the arc-shaped sliding plate (401) is matched with the first balls (301).

2. A demonstration board according to claim 1, wherein: arc wall (402) have been seted up to the one end that active lever (4) are close to support column (2), the lower extreme fixedly connected with semi-ring shape support column (403) of display screen (8), semi-ring shape support column (403) and arc wall (402) looks adaptation.

3. A demonstration board according to claim 2, wherein: the inner wall of the arc-shaped groove (402) is provided with strip-shaped clamping lines, and the side wall of the semi-annular supporting column (403) is provided with clamping grooves matched with the strip-shaped clamping lines.

4. A demonstration board according to claim 1, wherein: one end of the connecting rod (7) far away from the display screen (8) is fixedly connected with a second ball (701), and the second ball (701) is matched with the rolling groove (6).

5. A demonstration board according to claim 1, wherein: one end of the bottom plate (1) far away from the supporting column (2) is fixedly connected with a universal wheel (101).

Images