CN214295258U

CN214295258U - Push-and-pull blackboard convenient to activity

Info

Publication number: CN214295258U
Application number: CN202120227507.6U
Authority: CN
Inventors: 罗丽英
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-09-28
Anticipated expiration: 2031-01-27

Abstract

The utility model discloses a push-and-pull blackboard convenient to activity relates to push-and-pull blackboard field, and is limited to current blackboard size, and the problem of comparatively reflecting light, proposes following scheme now, and it includes main frame, big blackboard, the slide has been seted up to the inboard of main frame, the first stopper of the equal fixedly connected with in upper and lower both ends on the left and right sides of main frame, the spacing groove has been seted up in the first stopper, be provided with little blackboard in the main frame, the cell body has all been seted up to the left and right sides at the upper and lower both ends of little blackboard, be provided with the pulley in the cell body, the cavity has been seted up at the upper and lower both ends on the right side of little blackboard, be provided with the slide in the cavity, the last fixed surface of slide is connected with the second stopper, the lower fixed surface of slide is connected with the spring. The utility model discloses push-and-pull blackboard has the movably adjustable of being convenient for to reach the characteristics of the purpose of better teaching.

Description

Push-and-pull blackboard convenient to activity

Technical Field

The utility model relates to a push-and-pull blackboard field especially relates to a push-and-pull blackboard convenient to activity.

Background

Among the current push-and-pull blackboard, because the problem of most classrooms because the window all can lead to the blackboard because the reflection of light lets the problem that partial student can't comparatively clearly see the blackboard, and current blackboard all is the size limited, can lead to the not coherent problem of teaching content inadequately like this in the teaching, consequently provides a push-and-pull blackboard convenient to activity.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pair of push-and-pull blackboard convenient to activity has solved current blackboard size limitedly, and the problem of comparatively reflection of light.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a push-and-pull blackboard convenient to activity, includes main frame, big blackboard, the slide has been seted up to the inboard of main frame, the equal fixedly connected with first stopper in the upper and lower both ends on the left and right sides of main frame, seted up the spacing groove in the first stopper, be provided with little blackboard in the main frame, the cell body has all been seted up to the left and right sides at the upper and lower both ends of little blackboard, be provided with the pulley in the cell body, the cavity has been seted up at the upper and lower both ends on the right side of little blackboard, be provided with the slide in the cavity, the last fixed surface of slide is connected with the second stopper, the lower fixed surface of slide is connected with the spring, the upper end fixedly connected with locating platform of the leading flank of little blackboard, the groove has been seted up to the upside of main frame, it is provided with the bracing piece to accomodate the inslot.

Preferably, the small blackboard and the pulley are connected to the upper inner wall and the lower inner wall of the slide way in a sliding manner, and the left side of the main frame is provided with a through hole.

Preferably, the sliding plate is connected in the cavity in a sliding manner, and the limiting block is connected with the limiting groove batch.

Preferably, the lower surface of the sliding plate is fixedly connected with a spring, and the other end of the spring is fixedly connected with the lower bottom wall of the cavity.

Preferably, the supporting rod is movably connected in the accommodating groove through a hinge, and the hinge is arranged at the left end of the supporting rod.

Preferably, the right side of the supporting rod is movably connected to the positioning table through a bolt, and the lower end of the small blackboard is provided with a positioning bolt.

The utility model provides a beneficial effect is: a slide way is arranged in the main frame of the existing large blackboard, a first limit block is fixedly connected with the left upper and lower sides of the main frame in a short and long way, a second limit block is arranged in the first limit block, a small blackboard is arranged in the main frame, a groove body is arranged on the small blackboard, a pulley is arranged in the groove body, a cavity is arranged on the right side of the small blackboard, a slide plate is arranged in the cavity, a second limit block is fixedly connected with the upper side of the slide plate, a spring is fixedly connected with the lower surface of the slide plate, the limit blocks are matched and connected with the limit grooves, the small blackboard and the pulley are both slidably connected in the slide way, a channel is arranged on the left side of the main frame, so that the small blackboard can slide out to the left side to enlarge the area of the blackboard, a positioning table is fixedly connected with the surface of the small blackboard, an accommodating groove is arranged on the upper side frame of the main frame, a support rod is arranged in the accommodating groove, and the support rod can be matched and connected with the positioning table, make this device not only can enlarge the size, can also be used for being in the light through opening little blackboard for this device has the activity of being convenient for and adjusts, so as to reach the characteristics of the purpose of better teaching.

Drawings

Fig. 1 is a sectional view of the structure of the push-pull blackboard convenient to move according to the present invention.

Fig. 2 is a cross-sectional view a-a of fig. 1.

Fig. 3 is a sectional view of the utility model for opening a small blackboard of a push-pull blackboard convenient to move.

Fig. 4 is a front view of the push-pull blackboard convenient to move.

Reference numbers in the figures: the blackboard comprises a main frame 1, a large blackboard 2, a slideway 3, a first limiting block 4, a limiting groove 5, a small blackboard 6, a groove body 7, a pulley 8, a cavity 9, a sliding plate 10, a second limiting block 11, a spring 12, a positioning table 13, a supporting rod 14 and a receiving groove 15.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1 to 4, a push-pull blackboard convenient to move includes a main frame 1, a large blackboard 2, the inner side of the main frame 1 is provided with a slideway 3, the upper and lower ends of the left and right sides of the main frame 1 are fixedly connected with a first limit block 4, a limit groove 5 is arranged in the first limit block 4, a small blackboard 6 is arranged in the main frame 1, the left and right sides of the upper and lower ends of the small blackboard 6 are both provided with a groove body 7, a pulley 8 is arranged in the groove body 7, the upper and lower ends of the right side of the small blackboard 6 are provided with a cavity 9, a sliding plate 10 is arranged in the cavity 9, the upper surface of the sliding plate 10 is fixedly connected with a second limiting block 11, the lower surface of the sliding plate 10 is fixedly connected with a spring 12, the upper end of the front side face of the small blackboard 6 is fixedly connected with a positioning table 13, a containing groove 15 is formed in the upper side of the main frame 1, and a supporting rod 14 is arranged in the containing groove 15.

In this embodiment, little blackboard 6 and the equal sliding connection of pulley 8 are at the upper and lower inner wall of slide 3, and the through-hole has been seted up in the left side of main frame 1, slide 10 sliding connection is in cavity 9, and stopper 11 is connected with 5 batch in spacing groove, slide 10's lower fixed surface is connected with spring 10, and spring 10's the other end fixed connection is at the lower bottom wall of cavity 9, bracing piece 14 is through hinge swing joint in accomodating groove 15, and the hinge setting is at the left side end of bracing piece 14, bolt swing joint is passed through on location platform 13 on bracing piece 14's right side, and the lower extreme of little blackboard 6 is provided with positioning bolt.

The working principle is as follows: the utility model discloses the user can be earlier with the positioning bolt back of unscrewing on big blackboard 2 down when using in the device, pushes away little blackboard 6 a left side, and second stopper 11, pulley 8, little blackboard 6 all slide in slide 3 this moment, and after second stopper 11 is connected with the cooperation of spacing groove 5, carry out the screens, then can rotate little blackboard 4 and adjust suitable angle, prop up bracing piece 14, through with location platform 13 carry out threaded connection the maintenance can.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A push-pull blackboard convenient to move comprises a main frame (1) and a large blackboard (2), wherein a slide way (3) is arranged on the inner side of the main frame (1), and is characterized in that the upper end and the lower end of the left side and the right side of the main frame (1) are fixedly connected with a first limiting block (4), a limiting groove (5) is formed in the first limiting block (4), a small blackboard (6) is arranged in the main frame (1), groove bodies (7) are arranged on the left side and the right side of the upper end and the lower end of the small blackboard (6), pulleys (8) are arranged in the groove bodies (7), a cavity (9) is formed in the upper end and the lower end of the right side of the small blackboard (6), a sliding plate (10) is arranged in the cavity (9), a second limiting block (11) is fixedly connected to the upper surface of the sliding plate (10), and a spring (12) is fixedly connected to the lower surface of the sliding plate (10), the upper end fixedly connected with location platform (13) of the leading flank of little blackboard (6), accomodate groove (15) have been seted up to the upside of main frame (1), be provided with bracing piece (14) in accomodating groove (15).

2. A push-pull blackboard convenient to move as claimed in claim 1, wherein the small blackboard (6) and the pulley (8) are both connected with the upper and lower inner walls of the slideway (3) in a sliding manner, and the left side of the main frame (1) is provided with a through hole.

3. A push-pull blackboard convenient to move as claimed in claim 1, wherein the sliding plate (10) is slidably connected in the cavity (9), and the second limit block (11) is connected with the limit groove (5) by batch.

4. A push-pull blackboard convenient to move as claimed in claim 1, wherein the lower surface of the sliding plate (10) is fixedly connected with a spring (12), and the other end of the spring (12) is fixedly connected with the lower bottom wall of the cavity (9).

5. A sliding blackboard convenient to move according to claim 1, characterised in that the support rod (14) is movably connected in the receiving groove (15) by a hinge, and the hinge is provided at the left end of the support rod (14).

6. A push-pull blackboard convenient to move as claimed in claim 1, wherein the right side of the support rod (14) is movably connected to the positioning table (13) through bolts, and the lower end of the small blackboard (6) is provided with a positioning bolt.