CN219467417U - Vertical fixed-point drawing device - Google Patents

Abstract

The utility model relates to a vertical fixed-point drawing device which comprises a storage box and rotating legs, wherein the storage box is internally provided with a storage groove, the rotating legs are rotatably arranged in the storage groove, through holes are formed in the rotating legs in a penetrating mode, fulcrum columns are arranged in the through holes in a penetrating mode, the fulcrum columns are in the shape of screws, the fulcrum columns penetrate through the through holes, the bottoms of the fulcrum columns are fixedly connected with the storage box, and the height of the fulcrum columns is not smaller than the sum of the thicknesses of the storage box and the rotating retreats.

Description

Vertical fixed-point drawing device

Technical Field

The utility model relates to the technical field of teaching drawing tools, in particular to a vertical fixed-point drawing device.

Background

The teaching drawing tool comprises a ruler, compasses, a protractor, a triangular ruler and the like, is commonly used in mathematical education, is taken as the teaching drawing tool with higher utilization rate, is carried along with a teacher in class, and is provided with mutually hinged supporting legs, one side supporting leg is provided with a center and is commonly used as a fulcrum of a circle center, the end part of the other side supporting leg is used for clamping chalk, and a graph with a rated radius is drawn on a vertical blackboard through rotation.

The use mode of the teaching aid compasses is the same as that of the compasses in stationery, but the blackboard is a vertical plane relative to the desktop, the teaching aid compasses are heavy and large and are affected by gravity in the vertical direction, the stability on the vertical blackboard is poor, the drawing is often irregular, the drawing needs to be wiped off for redrawing, and the classroom time is wasted frequently.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a vertical fixed-point drawing device.

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

the utility model provides a vertical fixed point drawing device, includes receiver and rotatory leg, the inside of receiver still is provided with the storage tank, rotatory leg rotationally sets up in the storage tank, still run through on the rotatory leg and be provided with the through-hole, the inside pivot post that still runs through of through-hole is provided with, the pivot post is the shape of screw, the pivot post is just the pivot post runs through the through-hole just the bottom of pivot post with the receiver is fixed links to each other, the height of pivot post is not less than the receiver with rotatory thickness sum that moves back.

Further, the storage groove is further provided with a taking opening, and the taking openings are relatively distributed on two sides of the rotating leg.

Further, the rotating leg is divided into a rotating part and a telescopic part, a cavity is formed in the telescopic part, and the rotating leg is movably arranged in the cavity.

Further, the cross section of rotatory leg is T style of calligraphy, the afterbody of rotatory leg is provided with convex annular round platform, the afterbody of rotatory leg with the opening part of cavity is mutual buckle.

Further, friction corrugations are uniformly formed on the surfaces of the rotating legs.

Furthermore, a clamping head is further arranged at the opening of the cavity, the clamping head is a circular ring with a round surface, and the clamping head is matched with the friction corrugation.

Furthermore, the tail part of the telescopic part is also provided with a chalk bayonet in a penetrating way.

Further, the back of receiver still is provided with magnetite fixed block, the quantity of magnetite fixed block is not less than two.

Furthermore, the rotating legs are also provided with scales.

Further, the minimum length of the rotating part and the telescopic part is smaller than the length of the storage box.

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

1. the utility model designs the storage box with the magnet, the rotatable supporting leg is accommodated in the storage box, the storage box is used as the fixed supporting leg, and the fixed supporting leg is stably adsorbed on the blackboard through the magnet without being fixed by hands, so that the problem of unstable fixing of the supporting leg is solved;

2. according to the utility model, the rotating leg is used as the radius of the circle, and the scales are arranged on the rotating leg, so that the length of the radius can be set directly when drawing, and the problem that the radius cannot be directly measured by the traditional compass is solved;

3. according to the utility model, the friction corrugation is designed on the rotating part, the clamping head is designed on the telescopic part, and the clamping head and the friction corrugation are mutually buckled, so that the stability of the rotatable supporting leg is improved, and the problem of unstable rotating supporting leg of the traditional teaching compass is solved.

Drawings

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a state diagram of the present utility model;

FIG. 3 is a side view of the present utility model;

FIG. 4 is a structural cross-sectional view of a rotating leg of the present utility model;

fig. 5 is an enlarged view of a portion of a rotating leg of the present utility model.

In the figure: 1. the device comprises a storage box, 11, a taking port, 12, a storage groove, 13, a magnet fixing block, 2, a rotating leg, 21, a chalk bayonet, 22, a rotating part, 221, friction waves, 222, a through hole, 23, a telescopic part, 231, a cavity, 233, a clamping head, 3 and a fulcrum column.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

In the description of the present utility model, it should 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", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

As shown in fig. 1-5.

The utility model provides a vertical fixed point drawing device, includes receiver 1 and rotatory leg 2, and the inside of receiver 1 still is provided with storage tank 12, and rotatory leg 2 rotationally sets up in storage tank 12, still runs through on the rotatory leg 2 and is provided with through-hole 222, and the inside pivot post 3 that still runs through of through-hole 222 is provided with, and pivot post 3 is the shape of screw, and pivot post 3 runs through-hole 222 and pivot post 3's bottom and receiver 1 are fixed to link to each other for pivot post 3, and the height of pivot post 3 is not less than the sum of the thickness of receiver 1 and rotatory moving back.

Further, the storage groove 12 is further provided with a taking opening 11, the taking opening 11 is relatively distributed on two sides of the rotary leg 2, the taking opening 11 provides a space for taking the rotary leg 2, and the rotary leg 2 is conveniently taken out.

Further, the rotating leg 2 is divided into a rotating part 22 and a telescopic part 23, a cavity 231 is formed in the telescopic part 23, the rotating leg 2 is movably arranged in the cavity 231, the cross section of the rotating leg 2 is in a T shape, the tail of the rotating leg 2 is provided with a convex annular round table, the tail of the rotating leg 2 is mutually buckled with the opening of the cavity 231, and the telescopic rotating leg 2 is convenient to store and increase the radius range which can be drawn.

Further, friction ripple 221 is also evenly arranged on the surface of rotary leg 2, clamping head 233 is also arranged at the opening of cavity 231, clamping head 233 is a round ring with round surface, clamping head 233 is matched with friction ripple 221, clamping head 233 is round surface and can be clamped in the ripple, force can also slide the friction ripple, friction force is increased by the mutual matching of clamping head 233 and friction ripple, and stability of rotary leg is increased.

Further, the tail of the telescopic part 23 is further provided with a chalk bayonet 21 in a penetrating way, and the chalk bayonet 21 is used for penetrating chalk, so that drawing is facilitated.

Further, the back of receiver 1 still is provided with magnetite fixed block 13, and the quantity of magnetite fixed block 13 is not less than two, and the magnetite piece is used for fixed receiver 1, and the magnetite adsorbs on the blackboard, and the suction of magnetite is more stable in hand-held force than, and the magnetite is fixed also to have liberated both hands moreover.

Furthermore, the rotary legs 2 are also provided with scales, so that a teacher can draw a circle with an accurate radius more conveniently when using the rotary legs.

Further, the minimum length of the rotating part 22 and the telescopic part 23 is smaller than the length of the storage box 1, so that the rotating leg 2 can be fully stored in the storage box 1, and the radius range of the compasses can be further enlarged.

Furthermore, the utility model designs the storage box 1 with the magnet, the rotatable supporting leg is stored in the storage box 1, the storage box 1 is used as the fixed supporting leg, and the fixed supporting leg is stably adsorbed on the blackboard through the magnet without being fixed by hands, so that the problem of unstable supporting leg fixation is solved;

furthermore, the rotary leg 2 is used as the radius of the circle, and the scales are arranged on the rotary leg 2, so that the length of the radius can be set directly after drawing, and the problem that the radius cannot be directly measured by the traditional compass is solved;

furthermore, the friction corrugation 221 is designed on the rotating part 22, the clamping head 233 is designed on the telescopic part 23, and the clamping head 233 and the friction corrugation 221 are mutually buckled, so that the stability of the rotatable supporting leg is improved, and the problem that the rotating supporting leg of the traditional teaching compass is unstable is solved.

Further, when the rotary leg 2 is used, the position of the fulcrum post 3 on the storage box 1 is placed at the position of the circle center, one surface of the storage box 1 provided with the magnet faces the blackboard, the magnet fixing block 13 is adsorbed on the blackboard, then the rotary leg 2 in the storage groove 12 is taken out through the taking opening 11 of the storage groove 12, chalk is embedded into the chalk bayonet 21 of the rotary leg 2, the rotary leg 2 is stretched to the required length according to scales, and then the rotary leg 2 is rotated around the fulcrum post 3 as the center to draw a circle.

Further, if the radius of the circle is smaller than the length of the storage box 1, after the other parts of the circle are drawn, the gap left by the storage box 1 can be directly filled with chalk manually.

Furthermore, when not in use, the storage box 1 can be directly adsorbed on a blackboard, the storage problem of the teaching aid is also solved, and a teacher is not required to walk with heavy compasses.

In the description of the present specification, reference to the terms "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In summary, although the present utility model has been described in terms of the preferred embodiments, the preferred embodiments are not limited to the above embodiments, and various modifications and changes can be made by one skilled in the art without departing from the spirit and scope of the utility model, and the scope of the utility model is defined by the appended claims.

Claims (9)

1. Vertical fixed point drawing device, its characterized in that: including receiver and swivelling leg, the inside of receiver still is provided with the storage tank, the swivelling leg rotationally sets up in the storage tank, still run through on the swivelling leg and be provided with the through-hole, the inside pivot post that still runs through of through-hole is provided with, the pivot post is the shape of screw, the pivot post is the pivot post runs through the through-hole just the bottom of pivot post with the receiver is fixed continuous, the height of pivot post is not less than the receiver with the thickness sum that the rotation moved back, the back of receiver still is provided with the magnetite fixed block, the quantity of magnetite fixed block is not less than two.

2. The vertical pointing device of claim 1, wherein: the storage groove is further provided with a taking opening, and the taking openings are relatively distributed on two sides of the rotating leg.

3. The vertical pointing device of claim 1, wherein: the rotary leg is divided into a rotary part and a telescopic part, a cavity is formed in the telescopic part, and the rotary leg is movably arranged in the cavity.

4. A vertical pointing device as defined in claim 3, wherein: the cross section of the rotary leg is T-shaped, a convex annular round table is arranged at the tail of the rotary leg, and the tail of the rotary leg is mutually buckled with the opening of the cavity.

5. A vertical pointing device as defined in claim 3, wherein: friction corrugations are also uniformly arranged on the surfaces of the rotating legs.

6. The vertical pointing device of claim 5, wherein: the opening part of the cavity is also provided with a clamping head, the clamping head is a circular ring with a round surface, and the clamping head is matched with the friction ripple.

7. A vertical pointing device as defined in claim 3, wherein: the tail part of the telescopic part is also provided with a chalk bayonet in a penetrating way.

8. The vertical pointing device of claim 1, wherein: the rotating legs are also provided with scales.

9. A vertical pointing device as defined in claim 3, wherein: the minimum length of the rotating part and the telescopic part is smaller than the length of the storage box.