CN212353392U

CN212353392U - Tool for mathematical drawing

Info

Publication number: CN212353392U
Application number: CN202020620466.2U
Authority: CN
Inventors: 邬玫; 扬起群
Original assignee: Guilin Normal College
Current assignee: Guilin Normal College
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2021-01-15
Anticipated expiration: 2030-04-23

Abstract

The utility model relates to a mathematics technical field of drawing, and an instrument is used in mathematics drawing is disclosed, the slide rail type electric iron comprises a supporting rod, the lower extreme fixedly connected with fixed disk of bracing piece, the lower extreme outside fixedly connected with support cover of fixed disk, the pole wall of bracing piece rotates and has cup jointed the lantern ring, the fixed section of thick bamboo of lateral wall fixedly connected with of the lantern ring, relative one side lateral wall rotation is connected with same root adjusting screw about the fixed section of thick bamboo, adjusting screw's one end runs through and stretches out the outer and fixedly connected with turning block of fixed section of thick bamboo, adjusting screw's pole wall threaded connection has the regulating block, the bar opening that the front side of regulating block was seted up through the fixed section of thick bamboo wall runs through and stretches out the outer and fixedly connected with connecting rod of fixed section of thick bamboo, the lower. The utility model discloses can carry out the operation of drawing a circle of rapid and stable, be convenient for draw and use.

Description

Tool for mathematical drawing

Technical Field

The utility model relates to a mathematics drawing technical field especially relates to an instrument is used in mathematics drawing.

Background

The compasses are usually made of metal or wood materials and comprise two parts which are connected by a hinge, wherein the two parts can be adjusted, and chalk can be loaded on a movable supporting rod for drawing.

The compasses that draw among the graphics primitive that present mathematical education used mainly use the compasses to go on, and the compasses of operation on the blackboard are generally bulky, comparatively inconvenient when rotating the drawing circle, and the centre of a circle that is used for the fixed point produces the skew easily at the in-process of drawing the circle, and the actual mapping of being not convenient for is used.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the general volume of the compasses of operating on the blackboard among the prior art great, comparatively inconvenient when rotating the drawing circle, and the centre of a circle that is used for the fixed point produces the skew easily at the in-process of drawing the circle, the problem that the actual mapping of being not convenient for used, and the instrument for mathematical drawing that provides.

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

a tool for mathematical drawing comprises a supporting rod, wherein the lower end of the supporting rod is fixedly connected with a fixed disc, the outer side of the lower end of the fixed disc is fixedly connected with a supporting cover, the rod wall of the supporting rod is rotatably sleeved with a sleeve ring, the side wall of the sleeve ring is fixedly connected with a fixed cylinder, the left side wall and the right side wall of the fixed cylinder are rotatably connected with a same adjusting screw rod, one end of the adjusting screw rod penetrates and extends out of the fixed cylinder and is fixedly connected with a rotating block, the rod wall of the adjusting screw rod is in threaded connection with an adjusting block, the front side of the adjusting block penetrates and extends out of the fixed cylinder through a strip-shaped opening formed in the cylinder wall of the fixed cylinder and is fixedly connected with a connecting rod, the lower end of the connecting rod is integrally connected with a clamping cylinder, a U-shaped clamping plate is slidably connected in the clamping cylinder, a, the lower extreme fixedly connected with semicircle clamping ring of fixture block, fixedly connected with is the same clamping spring that the cover was established outside the guide bar between fixture block and the opposite side lateral wall of U-shaped cardboard, the upper end of U-shaped cardboard rotates and is connected with the extrusion bolt, the upper end of extrusion bolt runs through the upper end that stretches out the connecting rod.

Preferably, the upper end of the supporting rod is fixedly connected with a pressing handle.

Preferably, the lower end center department of fixed disk has seted up the cylinder groove, the activity is pegged graft in the cylinder groove and is had the extension rod, the lower extreme fixedly connected with location rubber head of extension rod, the upper end of location rubber head and the lower extreme fixedly connected with cover of fixed disk are established and are established the extrusion spring outside the extension rod.

Preferably, the rod wall of the supporting rod is fixedly sleeved with two limiting ring plates which are arranged in an up-and-down symmetrical mode relative to the lantern ring.

Preferably, the outer wall of the U-shaped clamping plate is symmetrically and fixedly connected with two limiting sliding blocks, and the wall of the clamping cylinder is provided with a limiting sliding opening matched with the limiting sliding blocks in a sliding manner.

Compared with the prior art, the utility model provides a tool for mathematical drawing possesses following beneficial effect:

1. this instrument for mathematical drawing, through the centre gripping section of thick bamboo that is equipped with, with two semicircle centre gripping intra-rings in the centre gripping section of thick bamboo of chalk end card income, centre gripping spring promotes the semicircle centre gripping ring and stabilizes spacingly to the chalk end, the diameter of drawing the circle as required again rotates the turning block, the turning block drives adjusting screw and rotates, the threaded connection effect that utilizes adjusting screw and regulating block makes the regulating block drive the chalk end and removes to suitable position, the fixed point of rethread location rubber head is fixed a position the device in accurate circular department, install the bracing piece hard through pressing down the handle, make the stable pressure of support cover hold the surface at the blackboard, make the fixed more stable of device, the rotation cup joint effect of rethread lantern ring and bracing piece rotates fixed section of thick bamboo, make fixed section of thick bamboo drive the chalk end and draw the circle on the blackboard, can carry out the operation of drawing of rapid and stable.

2. This instrument is used in mathematics drawing through the extrusion bolt that is equipped with, rotates the extrusion bolt when the chalk head is shorter, and the extrusion bolt promotes that the U-shaped cardboard moves down and can make chalk end and further contact of blackboard, and the drawing of being convenient for is adjusted and is used.

And the part that does not relate to among the device all is the same with prior art or can adopt prior art to realize, the utility model discloses can carry out the operation of drawing a circle of rapid and stable, the use of being convenient for draw.

Drawings

Fig. 1 is a schematic structural diagram of a mathematical drawing tool according to the present invention;

fig. 2 is a schematic structural diagram of a part a of a mathematical drawing tool according to the present invention;

fig. 3 is a schematic structural diagram of a part B of a mathematical drawing tool according to the present invention.

In the figure: the device comprises a supporting rod 1, a fixed disk 2, a supporting cover 3, a lantern ring 4, a fixed cylinder 5, an adjusting screw 6, a rotating block 7, an adjusting block 8, a strip-shaped opening 9, a connecting rod 10, a clamping cylinder 11, a U-shaped clamping plate 12, a guide rod 13, a clamping block 14, a semicircular clamping ring 15, a clamping spring 16, an extrusion bolt 17, a pressing handle 18, a cylindrical groove 19, an extension rod 20, a positioning rubber head 21, an extrusion spring 22 and a limiting ring plate 23.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", 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 simplicity of description, and do not indicate or imply that the device or element being 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.

Referring to fig. 1-3, a tool for mathematical drawing comprises a support rod 1, a fixed plate 2 is fixedly connected to the lower end of the support rod 1, a support cover 3 is fixedly connected to the outer side of the lower end of the fixed plate 2, a sleeve ring 4 is sleeved on the rod wall of the support rod 1 in a rotating manner, a fixed cylinder 5 is fixedly connected to the side wall of the sleeve ring 4, a same adjusting screw 6 is rotatably connected to the left and right opposite side walls of the fixed cylinder 5, one end of the adjusting screw 6 extends out of the fixed cylinder 5 and is fixedly connected with a rotating block 7, an adjusting block 8 is connected to the rod wall of the adjusting screw 6 in a threaded manner, a connecting rod 10 is fixedly connected to the front side of the adjusting block 8 by a strip-shaped opening 9 formed in the cylinder wall of the fixed cylinder 5, a clamping cylinder 11 is integrally connected to the lower end of the connecting rod 10, a U-shaped clamping plate 12, two clamping blocks 14 are movably sleeved outside the guide rod 13, the lower ends of the clamping blocks 14 are fixedly connected with semicircular clamping rings 15, the same clamping spring 16 sleeved outside the guide rod 13 is fixedly connected between the clamping blocks 14 and the side wall of the opposite side of the U-shaped clamping plate 12, the upper end of the U-shaped clamping plate 12 is rotatably connected with an extrusion bolt 17, and the upper end of the extrusion bolt 17 penetrates through the upper end of the connecting rod 10.

The upper end of the support rod 1 is fixedly connected with a pressing handle 18.

The center of the lower end of the fixed disc 2 is provided with a cylindrical groove 19, an extension rod 20 is movably inserted in the cylindrical groove 19, the lower end of the extension rod 20 is fixedly connected with a positioning rubber head 21, and the upper end of the positioning rubber head 21 and the lower end of the fixed disc 2 are fixedly connected with an extrusion spring 22 sleeved outside the extension rod 20.

The rod wall of the support rod 1 is fixedly sleeved with two limit ring plates 23 which are symmetrically arranged up and down relative to the lantern ring 4.

The outer wall of the U-shaped clamping plate 12 is symmetrically and fixedly connected with two limiting slide blocks, and the wall of the clamping barrel 11 is provided with a limiting sliding opening matched with the limiting slide blocks in a sliding connection mode.

In the utility model, when in use, the chalk head is clamped into the two semicircular clamping rings 15 in the clamping cylinder 11 through the arranged clamping cylinder 11, the clamping spring 16 pushes the semicircular clamping rings 15 to stabilize and limit the chalk head, then the diameter of a circle is drawn according to needs to rotate the rotating block 7, the rotating block 7 drives the adjusting screw 6 to rotate, the adjusting block 8 drives the chalk head to move to a proper position by utilizing the threaded connection effect of the adjusting screw 6 and the adjusting block 8, the device is positioned at an accurate circular position by the fixed point of the positioning rubber head 21, the supporting rod 1 is forcibly installed by the pressing handle 18, the supporting cover 3 is stably pressed on the surface of the blackboard, the fixing of the device is more stable, the fixed cylinder 5 is rotated by the rotating sleeve effect of the sleeve ring 4 and the supporting rod 1, the fixed cylinder 5 drives the chalk head to draw a circle on the blackboard, and the circle drawing operation can be rapidly and stably carried out, convenient to use of drawing, through the extrusion bolt 17 that is equipped with, rotate extrusion bolt 17 when the chalk end is shorter, extrusion bolt 17 promotes U-shaped cardboard 12 and moves down and can make chalk end and further contact of blackboard, and the regulation of being convenient for draw is used.

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. The tool for the mathematical drawing comprises a supporting rod (1) and is characterized in that a fixed disc (2) is fixedly connected to the lower end of the supporting rod (1), a supporting cover (3) is fixedly connected to the outer side of the lower end of the fixed disc (2), a lantern ring (4) is sleeved on the rod wall of the supporting rod (1) in a rotating mode, a fixed cylinder (5) is fixedly connected to the side wall of the lantern ring (4), the same adjusting screw rod (6) is rotatably connected to the side wall of the left side and the right side of the fixed cylinder (5) opposite to each other, one end of the adjusting screw rod (6) penetrates through the fixed cylinder (5) and is fixedly connected with a rotating block (7), an adjusting block (8) is in threaded connection with the rod wall of the adjusting screw rod (6), a strip-shaped opening (9) formed in the front side of the adjusting block (8) through the wall of the fixed cylinder (5) penetrates, the utility model discloses a clamping device for the automobile engine, including connecting rod (10), the lower extreme an organic whole of connecting rod (10) is connected with a centre gripping section of thick bamboo (11), sliding connection has U-shaped cardboard (12) in a centre gripping section of thick bamboo (11), the same root guide bar (13) of fixedly connected with between the relative lateral wall of U-shaped cardboard (12), two fixture blocks (14) have been cup jointed in guide bar (13) outer activity, lower extreme fixedly connected with semicircle clamping ring (15) of fixture block (14), same cover of fixedly connected with is established at the outer clamping spring (16) of guide bar (13) between fixture block (14) and U-shaped cardboard (12) one side lateral wall in opposite directions, the upper end of U-shaped cardboard (12) is rotated and is connected with extrusion bolt (17), the upper end of extrusion bolt.

2. A tool for mathematical drawing according to claim 1, characterised in that the upper end of the support bar (1) is fixedly connected with a pressing handle (18).

3. A mathematical drawing tool as claimed in claim 1, wherein the center of the lower end of the fixed plate (2) is provided with a cylindrical groove (19), an extension rod (20) is movably inserted into the cylindrical groove (19), the lower end of the extension rod (20) is fixedly connected with a positioning rubber head (21), and the upper end of the positioning rubber head (21) and the lower end of the fixed plate (2) are fixedly connected with an extrusion spring (22) sleeved outside the extension rod (20).

4. A tool for mathematical drawing according to claim 1, characterized in that the wall of the support bar (1) is fixedly sleeved with two stop ring plates (23) arranged up and down symmetrically with respect to the collar (4).

5. A mathematical drawing tool as claimed in claim 1, wherein the outer wall of the U-shaped clamping plate (12) is symmetrically and fixedly connected with two limiting slide blocks, and the wall of the clamping cylinder (11) is provided with a limiting slide opening matched with the limiting slide blocks for sliding connection.