CN217937637U

CN217937637U - Teaching is with show board

Info

Publication number: CN217937637U
Application number: CN202222137165.6U
Authority: CN
Inventors: 何元生; 邵国川; 何慧容
Original assignee: Hefei Shuda Information Technology Co ltd
Current assignee: Hefei Shuda Information Technology Co ltd
Priority date: 2022-08-15
Filing date: 2022-08-15
Publication date: 2022-12-02
Anticipated expiration: 2032-08-15

Abstract

The utility model is suitable for a teaching aid technical field, the utility model provides a show board is used in teaching, through setting up the backup pad, the ratchet, the pawl, reset torsion spring and knob, the cooperation of ratchet and pawl in the backup pad of both sides, can brake for two direction of rotation of show board main part respectively, thereby make the show board main part fix between two backup pads, when needs adjust show board main part rotation angle, only need to rotate the knob in one of them backup pad, the knob drives pawl and ratchet separation, pawl and ratchet meshing in another backup pad, this moment, can carry out the folk prescription to rotatory to the show board main part, after the rotation, only need loosen the knob, at this moment, the pawl is with ratchet meshing again under the effect of reset torsion spring, and realize dying the auto-lock of show board main part behind the angle modulation, compare with the mode of realizing show board main part rotation angle modulation through twisting the angle locking axle repeatedly among the prior art, adjust convenient and fast more.

Description

Teaching is with show board

Technical Field

The utility model relates to a teaching aid technical field specifically is a show board is used in teaching.

Background

Teaching show board main part is the face that needs to use at the teaching in-process, can write with chalk or other pens, plays certain explanation effect to the teaching content, now along with the rise of novel material and scientific and technological, teaching show board main part is except writing with the pen, also can carry out the projection with multimedia equipment.

Present teaching show board main part is for realizing height and rotation angle's regulation, be provided with flexible post in show board main part both sides usually, and set up angle locking axle on flexible post and fix the inclination of show board main part, however, when highly adjusting show board main part, often need two at least people's cooperation, and when adjusting inclination, also need to screw up or unscrew the angle locking axle on the flexible post in both sides repeatedly, consequently, there is the inconvenient defect of regulation, for this reason, need design corresponding technical scheme and solve the technical problem who exists.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a teaching is with show board to solve the problem of proposing in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a teaching is with show board, is including removing bottom plate, fixed mounting and removing a pair of flexible post on the base and installing the show board main part between two flexible posts, still includes angle adjustment mechanism, angle modulation includes the backup pad of fixed mounting on two flexible posts, the show board main part rotates through the pivot and sets up between two backup pads, the dead slot has been seted up in the backup pad, the dead slot internal rotation is provided with the ratchet, and is located ratchet one side in the dead slot and installs the pawl, the coaxial fixed mounting of ratchet is in the pivot, the outer movable mounting of backup pad has the knob that links to each other with the pawl, install the reduction torsion spring between knob and the backup pad.

As a further aspect of the present invention: the gear teeth of the ratchet wheel in the two support plates are opposite in rotating direction, and the knobs are symmetrically arranged outside the two support plates.

As a further aspect of the present invention: the support plate is also provided with a first indication arrow and a second indication arrow outside, and the indication directions of the first indication arrow and the second indication arrow are opposite.

As a further aspect of the present invention: the telescopic columns comprise telescopic sleeves fixedly installed on the movable bottom plate and telescopic rods movably inserted into the telescopic sleeves, the supporting plate is installed at the top end of each telescopic rod, a screw rod is arranged in each telescopic sleeve in a rotating mode, threaded holes matched with the screw rods are formed in the end portions of the telescopic rods, a driving shaft is arranged on the movable bottom plate between the two telescopic columns in a rotating mode and is connected with the screw rods in a transmission mode through a belt wheel transmission set.

As a further aspect of the present invention: and a hand wheel is fixedly arranged at the end part of the driving shaft.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a set up the backup pad, the ratchet, the pawl, reduction torsion spring and knob, the cooperation of ratchet and pawl in the backup pad of both sides, can brake for two direction of rotation of show board main part respectively, thereby make the show board main part fix between two backup pads, when needs are adjusted show board main part rotation angle, only need to rotate the knob in one of them backup pad, the knob drives pawl and ratchet separation, pawl is still with the ratchet meshing in another backup pad, this moment, can carry out the folk prescription to rotatory to the show board main part, after the rotation, only need loosen the knob, this moment, the pawl is again with the ratchet meshing under reduction torsion spring's effect, and realize dying the automatic lock of angle regulation back show board main part, compare with the mode that realizes show board main part rotation angle regulation through twisting angle locking shaft repeatedly among the prior art, adjust convenient and fast more.

2. The utility model discloses a set up screw rod, drive shaft and band pulley transmission group, when needs carry out the altitude mixture control to the show board main part, only need the one hand to rotate the drive shaft, under the transmission of band pulley transmission group, can drive the screw rod in two expansion sleeves and rotate simultaneously, the cooperation of screw hole on screw rod and the telescopic link for two telescopic links are synchronous upwards or downstream, with this realization to the regulation of show board main part height, need not the cooperation of two, have improved the convenience of show board main part altitude mixture control.

Drawings

FIG. 1 is a schematic view of an overall structure of a display board for teaching;

FIG. 2 is a side view of a teaching display board;

FIG. 3 is a comparison of two support plates of a display board for teaching;

in the figure: 1-moving bottom plate, 2-telescopic column, 3-display plate main body, 4-supporting plate, 5-rotating shaft, 6-empty groove, 7-ratchet wheel, 8-pawl, 9-knob, 10-reset torsion spring, 11-first indication arrow, 12-second indication arrow, 13-telescopic sleeve, 14-telescopic rod, 15-screw rod, 16-driving shaft, 17-belt wheel transmission group and 18-hand wheel.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Example 1

Referring to fig. 1-3, a display board for teaching comprises a movable base plate 1, a pair of telescopic columns 2 fixedly mounted on a movable base, a display board main body 3 mounted between the two telescopic columns 2, and an angle adjusting mechanism, wherein the angle adjusting mechanism comprises a support plate 4 fixedly mounted on the two telescopic columns 2, the display board main body 3 is rotatably arranged between the two support plates 4 through a rotating shaft 5, a hollow groove 6 is formed in each support plate 4, a ratchet wheel 7 is rotatably arranged in each hollow groove 6, the gear teeth of the ratchet wheels 7 in the two support plates 4 are opposite in rotating direction, a pawl 8 is arranged on one side of the ratchet wheel 7 in each hollow groove 6, the ratchet wheels 7 are coaxially and fixedly mounted on the rotating shaft 5, a knob 9 connected with the pawl 8 is movably mounted outside each support plate 4, and a reset torsion spring 10 is mounted between the knob 9 and each support plate 4, the knobs 9 are symmetrically arranged outside the two supporting plates 4, the ratchets 7, the pawls 8, the reset torsion springs 10 and the knobs 9 are arranged, the ratchets 7 and the pawls 8 in the supporting plates 4 on two sides are matched to respectively brake two rotating directions of the display board main body 3, so that the display board main body 3 is fixed between the two supporting plates 4, when the rotating angle of the display board main body 3 needs to be adjusted, only the knob 9 on one supporting plate 4 needs to be rotated, the knob 9 drives the pawls 8 to be separated from the ratchets 7, the pawls 8 in the other supporting plate 4 are still meshed with the ratchets 7, at the moment, the display board main body 3 can be rotated in one direction, after the rotation is finished, only the knob 9 needs to be loosened, at the moment, the pawls 8 are meshed with the ratchets 7 again under the action of the reset torsion springs 10, and the display board main body 3 is automatically locked after the angle is adjusted, compare with the mode that realizes 3 rotation angle of show board main part and adjust through twisting the angle locking axle repeatedly among the prior art, adjust convenient and fast more.

In addition, a first indication arrow 11 and a second indication arrow 12 are further arranged outside the support plate 4, the indication directions of the first indication arrow 11 and the second indication arrow 12 are opposite, the first indication arrow 11 can indicate the rotation of the knob 9 for a user through the arrangement of the first indication arrow 11 and the second indication arrow 12, the second indication arrow 12 can indicate the rotation direction of the display board main body 3, and the first indication arrow and the second indication arrow cooperate with each other to further facilitate the adjustment of the rotation angle of the display board main body 3 by the user.

Example 2

The embodiment is improved on the basis of embodiment 1, and specifically comprises the following steps:

the telescopic columns 2 comprise telescopic sleeves 13 fixedly mounted on the movable bottom plate 1 and telescopic rods 14 movably inserted into the telescopic sleeves 13, the support plate 4 is mounted at the top end of each telescopic rod 14, a screw rod 15 is arranged in each telescopic sleeve 13 in a rotating mode, threaded holes matched with the screw rods 15 are formed in the end portions of the telescopic rods 14, a driving shaft 16 is further arranged between the two telescopic columns 2 on the movable bottom plate 1 in a rotating mode, the driving shaft 16 is in transmission connection with the screw rods 15 through a belt wheel transmission set 17, the screw rods 15 in the two telescopic sleeves 13 can be driven to rotate simultaneously through the driving shaft 16 and the belt wheel transmission set 17, when the height of the display board main body 3 needs to be adjusted through one hand, the driving shaft 16 only needs to be rotated through one hand under the transmission of the belt wheel transmission set 17, the screw rods 15 in the two telescopic sleeves 13 are driven to rotate simultaneously, the screw rods 15 are matched with the threaded holes in the telescopic rods 14, the two telescopic rods 14 move upwards or downwards synchronously, so that the height of the display board main body 3 is adjusted, the cooperation of the two telescopic rods is not needed, and the convenience in height adjustment of the display board main body 3 is improved.

In order to facilitate the rotation of the drive shaft 16, a hand wheel 18 is also fixedly arranged at the end of the drive shaft 16 in the present application.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a teaching is with show board, is including removing bottom plate (1), a pair of flexible post (2) of fixed mounting on removing the base and installing show board main part (3) between two flexible posts (2), its characterized in that still includes angle adjustment mechanism, angle adjustment includes backup pad (4) of fixed mounting on two flexible posts (2), show board main part (3) rotate through pivot (5) and set up between two backup pad (4), seted up dead slot (6) in backup pad (4), dead slot (6) internal rotation is provided with ratchet (7), and lies in ratchet (7) one side in dead slot (6) and install pawl (8), ratchet (7) coaxial fixed mounting is on pivot (5), backup pad (4) outer movable mounting has knob (9) continuous with pawl (8), install reset torsion spring (10) between knob (9) and backup pad (4).

2. Teaching display board according to claim 1, wherein the gear teeth of the ratchet wheel (7) in the two support plates (4) have opposite directions of rotation, and the knobs (9) on the outside of the two support plates (4) are symmetrically arranged.

3. Teaching display board according to claim 1, wherein the supporting plate (4) is externally provided with a first indicating arrow (11) and a second indicating arrow (12), the indicating directions of the first indicating arrow (11) and the second indicating arrow (12) being opposite.

4. The display board for teaching according to claim 1, wherein the telescopic columns (2) comprise telescopic sleeves (13) fixedly mounted on the movable bottom board (1) and telescopic rods (14) movably inserted into the telescopic sleeves (13), the support board (4) is mounted at the top ends of the telescopic rods (14), threaded rods (15) are rotatably arranged in the telescopic sleeves (13), threaded holes matched with the threaded rods (15) are formed in the end portions of the telescopic rods (14), a driving shaft (16) is rotatably arranged between the two telescopic columns (2) on the movable bottom board (1), and the driving shaft (16) is in transmission connection with the threaded rods (15) through a belt pulley transmission set (17).

5. Teaching display board according to claim 4, characterized in that a hand wheel (18) is also fixedly arranged at the end of the drive shaft (16).