CN219821097U - Inclination-preventing drawing board - Google Patents

Abstract

The utility model relates to the technical field of teaching tools and discloses an anti-tilting drawing board, which comprises a drawing board body and a support frame movably mounted on the drawing board body, wherein a mounting rod is fixedly mounted below the drawing board body in the support frame, a mounting groove is formed in the mounting rod in a penetrating manner, a gear is rotatably mounted in the central position of the inner wall of the bottom surface of the mounting groove, two rack plates meshed with the gear are symmetrically arranged on two sides of the gear by taking the gear as the center, and extension rods are fixedly mounted at the tail ends of the two rack plates. This kind of prevent slope drawing board, through interactive installation mount on the support frame again, the user needs to carry out the during operation of imparting knowledge to students on the drawing board body again, and the mount can play spacing effect to the drawing board body, then under the spacing effect of mount, can prevent that the user from making the single face atress of drawing board body and then leading to it to appear the slope when teaching, need not that the user holds the side of drawing board body and keeps drawing board body to keep vertical state, makes it more convenient during the use.

Description

Inclination-preventing drawing board

Technical Field

The utility model relates to the technical field of teaching tools, in particular to an anti-tilting drawing board.

Background

In educational training, the drawing board is an indispensable part, and when in use, a teacher draws, calculates and writes on the drawing board, so that students can learn and accept knowledge more quickly.

The prior teaching drawing board mainly comprises two parts of a drawing board and a bracket, when the teaching drawing board is used, if one surface of the drawing board is fully written, the other surface of the drawing board can be used continuously for users through overturning, and the utilization rate of the drawing board can be improved.

However, the existing drawing board still has the following problems when in use;

when the teaching person uses the whiteboard pen to write on the surface of the drawing board, because the edge of the drawing board lacks spacing support, the pen of the user can cause the drawing board to incline by taking the turnover shaft as the axis with the surface contact of the drawing board, and then the writing process of the teaching person is influenced, at the moment, the teaching person often holds the edge of the drawing board by a single hand so that the drawing board is kept in a vertical state, and the whole writing process is more laborious.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides an anti-tilting drawing board, which solves the problems proposed by the background technology, so that the drawing board is more stable in teaching use and is prevented from tilting after being stressed.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an anti-tilting drawing board, includes the drawing board body, movable mounting's support frame on the drawing board body, the inside of support frame is located the below fixed mounting of drawing board body and has installed the pole, and the inside of installation pole runs through and has seted up the mounting groove, and the bottom surface inner wall central point of mounting groove puts and rotates installs the gear, and the both sides of gear use the gear to be provided with two rack boards with gear engaged with as central symmetry, and the equal fixed mounting of end of two rack boards has the extension pole, and the upper end fixed mounting of extension pole has the mount, and the mount matches the setting with the thickness of drawing board body.

Preferably, a pull rod is fixedly arranged on the outer wall of the extension rod.

Preferably, the number of the fixing frames is two, and the two fixing frames are oppositely arranged.

Preferably, the tooth grooves on the rack plate are distributed in the middle of the rack plate, and the length of the tooth grooves is one half of the total length of the rack plate.

Preferably, the two ends of the tooth groove on the outer wall of the rack plate are respectively and fixedly provided with a stop block.

Preferably, the inner wall of the fixing frame is fixedly provided with a wear-resisting pad.

Preferably, the height of the rack plate is matched with the section height of the mounting groove.

Compared with the prior art, the utility model has the following beneficial effects:

this kind of prevent slope drawing board, through interactive installation mount on the support frame again, the user needs to carry out the during operation of imparting knowledge to students on the drawing board body again, and the mount can play spacing effect to the drawing board body, then under the spacing effect of mount, can prevent that the user from making the single face atress of drawing board body and then leading to it to appear the slope when teaching, need not that the user holds the side of drawing board body and keeps drawing board body to keep vertical state, makes it more convenient during the use.

Drawings

FIG. 1 is a schematic view of the overall structure of the main body of the present utility model;

FIG. 2 is a schematic cross-sectional view of a mounting groove structure according to the present utility model;

FIG. 3 is a schematic diagram of a connection between a gear and a rack plate structure according to the present utility model;

fig. 4 is an enlarged partial schematic view of fig. 2 at a in accordance with the present utility model.

In the figure: 1. a drawing board body; 2. a support frame; 3. a mounting rod; 4. a mounting groove; 5. a gear; 6. rack plate; 7. an extension rod; 8. a fixing frame; 9. a pull rod; 10. and a stop block.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

The technical scheme of the utility model is further described below with reference to the attached drawings and the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the drawings related to the present utility model are shown.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", etc., azimuth or positional relationship are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description and simplification of operations, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely for descriptive purposes and are not intended to have a particular meaning

Referring to fig. 1-4, an anti-tilting drawing board comprises a drawing board body 1, a support frame 2 movably mounted on the drawing board body 1, a mounting rod 3 fixedly mounted below the drawing board body 1 is arranged in the support frame 2, a mounting groove 4 is formed in the mounting rod 3 in a penetrating manner, a gear 5 is rotatably mounted at the center of the inner wall of the bottom surface of the mounting groove 4, two rack plates 6 meshed with the gear 5 are symmetrically arranged on two sides of the gear 5 by taking the gear 5 as the center, extension rods 7 are fixedly mounted at the tail ends of the two rack plates 6, a fixing frame 8 is fixedly mounted at the upper end of the extension rods 7, the fixing frame 8 is of a U-shaped structure, and the fixing frame 8 is matched with the thickness of the drawing board body 1.

According to the anti-tilting drawing board provided by the utility model, when the anti-tilting drawing board is used, a user can clamp the fixing frame 8 correspondingly outside the drawing board body 1, under the action of the fixing frame 8, the fixing frame 8 and the rotating shaft of the drawing board body 1 are stressed, so that the drawing board body 1 can be stably kept on a vertical straight line when in use, the situation that the user needs to hold the side edge of the drawing board body 1 in a vertical state when in teaching is avoided, the drawing board is more stable when in teaching use, meanwhile, the user can enable the fixing frame 8 to move outwards by pulling the extension rod 7, then when the two side edges of the fixing frame 8 are separated from the drawing board body 1, the user can turn over the other side edge of the drawing board body 1, then when the drawing board body 1 is turned to the other side, the user can push the fixing frame 8 inwards to limit and fix the drawing board body 1 again, and when the user pulls the extension rod 7, under the transmission effect when the user pulls the extension rod 5 to rotate, the two fixing frames 8 can also limit the drawing board 1 again after leaving the side wall of the drawing board body 1.

Further, as shown in fig. 3, the outer walls of the extension rods 7 are fixedly provided with the pull rods 9, and a user can pull the extension rods 7 outwards by pulling the pull rods 9, so that the outwards pulling process of the extension rods 7 is more convenient, and the pull rods 9 are fixedly arranged on the outer walls of the two extension rods 7, so that the user can conveniently and outwards pull the extension rods 7 no matter the user is located at any side.

Further, as shown in fig. 1 and fig. 2, the number of the fixing frames 8 is two, and the two fixing frames 8 are oppositely arranged, and the two fixing frames 8 are respectively positioned at two sides of the drawing board body 1 to limit the drawing board body 1 so as to keep the drawing board body in a vertical state, so that no matter a user is positioned at any side of the drawing board body 1 to write and teach, the user cannot incline due to the single-side stress of the drawing board body 1.

Further, as shown in fig. 3, the tooth grooves on the rack plate 6 are located at the middle position of the rack plate 6, the length of the tooth grooves is half of the total length of the rack plate 6, the length of the tooth grooves determines the length of the rack plate 6 extending outwards, and only half of the length of the tooth grooves ensures that the contact area between the outer wall of the rack plate 6 and the inner wall of the mounting groove 4 is large enough, so that the rack plate can stably slide in the mounting groove 4, and meanwhile, the rack plate 6 can be prevented from extending outwards too long to affect other people.

Further, as shown in fig. 3, the two ends of the tooth groove on the outer wall of the rack plate 6 are respectively and fixedly provided with a stop block 10, and the stop block 10 fixedly arranged on the rack plate 6 can prevent the gear 5 from slipping from the inside of the tooth groove on the rack plate 6, so that the stability of the whole device is enhanced.

Further, as shown in fig. 3, the inner wall of the fixing frame 8 is fixedly provided with a wear-resistant pad, the wear-resistant pad is elastically arranged, and the wear-resistant pad can be used for reducing friction between the inner wall of the fixing frame 8 and the corresponding outer wall of the drawing board body 1, so that the fixing frame 8 is prevented from wearing the outer wall of the drawing board body 1 in the process of moving back and forth.

Further, as shown in fig. 2, the height of the rack plate 6 is matched with the height of the section of the mounting groove 4, and the upper and lower wall surfaces of the rack plate 6 are contacted with the upper and lower inner walls of the mounting groove 4, so that when the rack plate 6 moves outwards, one end of the rack plate 6, which is located in the mounting groove 4, is lifted up due to the fact that the weight of one end of the rack plate is heavy, which is located outside the mounting rod 3, so that the rack plate 6 and the extension rod 7 always move on the same horizontal line when moving outwards.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (7)

1. The utility model provides a prevent slope drawing board, includes drawing board body (1), movable mounting's support frame (2) on drawing board body (1), its characterized in that: the inside of support frame (2) is located below fixed mounting of drawing board body (1) and has installed pole (3), the inside of installation pole (3) runs through and has offered mounting groove (4), gear (5) are installed in the rotation of the bottom surface inner wall central point of mounting groove (4), the both sides of gear (5) are provided with two rack boards (6) with gear (5) engaged with gear (5) as central symmetry, the equal fixed mounting in end of two rack boards (6) has extension rod (7), the upper end fixed mounting of extension rod (7) has mount (8), thickness matching setting of mount (8) and drawing board body (1).

2. The anti-tilting palette of claim 1, wherein: the outer wall of the extension rod (7) is fixedly provided with a pull rod (9).

3. The anti-tilting palette of claim 1, wherein: the number of the fixing frames (8) is two, and the two fixing frames (8) are oppositely arranged.

4. The anti-tilting palette of claim 1, wherein: the tooth grooves on the rack plate (6) are distributed in the middle of the rack plate (6), and the length of the tooth grooves is one half of the total length of the rack plate (6).

5. The tilting prevention drawing board according to claim 4, wherein: and the two ends of the outer wall of the rack plate (6) positioned at the tooth slot are respectively and fixedly provided with a stop block (10).

6. The anti-tilting palette of claim 1, wherein: the inner wall of the fixing frame (8) is fixedly provided with a wear-resisting pad.

7. The tilting prevention drawing board according to claim 5, wherein: the height of the rack plate (6) is matched with the section height of the mounting groove (4).