CN204382969U - Novel bow compass - Google Patents

Abstract

The utility model relates to a new type of compasses, which comprises a compass fixed foot and a compass movable foot. The circular fixed foot includes a fixed foot rod and a positioning needle arranged on the bottom surface of the fixed foot rod. The described compass movable foot includes a movable foot rod and a The pen cover for clamping the line drawing pen on the bottom surface of the rod also includes a slide bar engraved with a length scale line, and at least two transparent sliders are slid on the slide bar, and the upper part of the transparent slide block is provided with The through hole corresponding to the slide bar has a positioning screw threaded to run through the side wall of the through hole at the top of the transparent slider and is pressed against the slide bar. One end of the slide bar is vertically connected to the foot bar, and the other end is provided with a limited The bottom of each transparent slider is embedded with a telescopic groove, and the movable foot rod is telescopically placed in the telescopic groove, and a positioning screw threadedly runs through the side wall of the bottom end of the transparent slider and is tightly connected to the movable foot rod. on the outer wall. The utility model has strong applicability, is convenient for drawing concentric circles, and is also convenient for drawing circles independently.

Description

new compasses

technical field

The utility model relates to the technical field of teaching drawing tools, in particular to a novel compasses.

Background technique

If the traditional compasses are used to draw concentric circles, two circle drawing operations are required, and the coincidence and positioning of the circle centers during the two drawing processes are prone to errors.

Utility model content

The technical problem to be solved by the utility model is to provide a new type of compasses which has strong applicability, is convenient for drawing concentric circles, and is convenient for drawing circles independently.

In order to solve the above-mentioned technical problems, the utility model provides the following technical solutions: a new type of compasses, including a compass fixed foot and a compass movable foot, the circular fixed foot includes a fixed foot rod and a positioning pin arranged on the bottom surface of the fixed foot rod, and the compass movable The foot includes a moving foot rod and a pen cover for clamping a line drawing pen arranged on the bottom surface of the moving foot rod, and also includes a sliding bar engraved with a length scale line, and at least two transparent sliders are provided on the sliding sleeve on the sliding bar. The upper part of the transparent slider is provided with a through hole corresponding to the slide rod, and a positioning screw threadedly penetrates through the side wall of the through hole at the top of the transparent slider and is pressed against the slide rod. One end of the slide rod is connected vertically On the fixed foot rod, the other end is provided with a limit block, and the bottom end of each transparent slider is embedded with a telescopic groove, and the moving foot rod is telescopically placed in the telescopic groove, and the positioning screw threadedly runs through the transparent slider The bottom side wall is tight on the outer wall of the moving foot rod.

Preferably, on the basis of the above solution, the transparent slider is provided with an indicator line corresponding to the axis of the pen cover.

Preferably, on the basis of the above solution, the bottom surface of the anchor rod is embedded with a groove, the positioning pin is placed in the groove, and a tightening screw threadedly passes through the outer wall of the bottom end of the anchor rod to tighten against the positioning pin.

Preferably, on the basis of the above solution, an extension part extends outward from the connection position between the anchor rod and the slide bar, and the slide bar is screwed to the extension part.

Preferably, on the basis of the above solution, an eraser is provided on the top of the anchor rod.

Compared with the prior art, the utility model has the beneficial effects as follows: wherein, the circle-defining foot and the compass moving foot are combined to draw a circle through the slide bar with the length scale line, which is convenient for directly controlling the radius of the circle and is easy to operate; Among them, at least two transparent sliders are set on the slide bar, and the transparent sliders are connected with the compass moving feet, which is convenient for at least two concentric circles at one time, and the drawing is fast and the centers of the concentric circles overlap without error; wherein, each transparent slider and the moving foot rod By adjusting the positioning screw, the depth of the moving foot rod placed in the transparent slider can be changed, and then the height of the corresponding compass moving foot can be changed. When only one or other fixed number of circles need to be drawn, it is convenient to adjust the height of the corresponding compass moving foot , to improve its drawing applicability.

Description of drawings

Fig. 1 is the structural representation of the utility model.

The marks in the figure are: 1-circular fixed foot, 11-fixed foot rod, 111-groove, 112-extended part, 2-compass moving foot, 21-moving foot rod, 22-pen holder, 3-sliding bar, 4- Limiting block, 5-transparent slide block, 51-telescopic slot, 6-indicating marking line, 7-eraser, 8-positioning screw, 9-top tightening screw.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical" , "horizontal", "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model, rather than Any indication or implication that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should not be construed as limiting the invention.

As can be seen with reference to Fig. 1, novel compasses, comprise compass fixed foot 1, compass movable foot 2, described compass fixed foot 1 comprises fixed foot rod 11 and the positioning pin 12 that is arranged on the bottom surface of fixed foot rod 11, described compass movable foot 2 comprises The moving foot bar 21 and the pen cover 22 for clamping the line drawing pen that is arranged on the bottom surface of the moving foot bar 21 also include a slide bar 3 with a length scale mark engraved, and at least two transparent sleeves are provided on the slide bar 3. Slider 5, the upper part of the transparent slider 5 is provided with a through hole corresponding to the slide bar 3, a positioning screw 8 threadedly runs through the side wall of the through hole at the top of the transparent slide block 5 and is tight against the slide bar 3 One end of the sliding rod 3 is vertically connected to the fixed foot rod 11, and the other end is provided with a limit block 4. The bottom end of each transparent slider 5 is embedded with a telescopic groove 51, and the moving foot rod 11 is telescopically placed. In the telescopic groove 51, there is a positioning screw rod 8 threadedly running through the bottom side wall of the transparent slide block and tightening on the outer wall of the moving foot rod.

Wherein, the compass fixed foot 1 and the compass moving foot 2 are combined to draw a circle through the slide bar 3 with the length scale line, which is convenient to directly control the radius of the circle and is easy to operate; wherein, at least two transparent slide bars are set on the slide bar 3 Block 5, the transparent slider 5 is connected to the compass movable foot 2, which is convenient for at least two concentric circles at one time, the drawing is quick and the centers of the concentric circles coincide without error; wherein, the positioning screw is adjusted between each transparent slider 5 and the movable foot rod 21 8. It is possible to change the depth of the moving foot rod 21 placed in the transparent slider 5, and then change the height of the corresponding compass moving foot 2. When only one or other fixed number of circles need to be drawn, it is convenient to adjust the height of the corresponding compass moving foot 2. In order to improve its drawing applicability.

Referring further to FIG. 1 , the transparent slider 5 is provided with an indicator line 6 corresponding to the axis of the pen cover 22 , which is convenient for using the indicator line 6 to correspond to the length scale line to improve the positioning accuracy of the radius of the drawn circle.

Referring further to Fig. 1, an extension 112 extends outward from the connection position between the anchor rod 11 and the slide bar 3, and the slide rod 3 is threadedly connected to the extension portion 112; the bottom surface of the anchor rod 11 is embedded with a groove 111 , the positioning pin 12 is placed in the groove 111, and there is a top tightening screw rod 9 threadedly running through the outer wall of the bottom end of the anchor rod 11 to tighten on the positioning pin 12; the sliding bar 3 and the anchor rod 11 can be used separately At the same time, the positioning pin 12 can be removed by adjusting the tightening screw 9 on the fixed foot rod 11, which is convenient for replacing the line drawing pen to draw alone or for replacing the suction cup to improve the stability and applicability of the circular fixed foot when in use Strong and versatile.

Further referring to Fig. 1, an eraser 7 is arranged on the top of the fixed foot bar 11, which is convenient to change the wrong line drawn by a pencil and is easy to use.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (5)

1. Novel compasses, comprising compass regulation foot, compasses movement foot, described circle regulation foot comprises fixed foot rod and the positioning needle that is arranged on the bottom surface of fixed foot rod, described compasses movement foot comprises movement foot rod and is arranged on the bottom surface of movement foot rod The pen cover for clamping the line drawing pen is characterized in that: it also includes a slide bar engraved with a length scale line, and at least two transparent sliders are provided on the slide bar, and the upper parts of the transparent sliders all pass through A through hole corresponding to the slide bar is provided, and a positioning screw threadedly penetrates through the side wall of the through hole at the top of the transparent slider and is pressed against the slide bar. One end of the slide bar is vertically connected to the foot bar, and the other end A limit block is provided, and the bottom end of each transparent slider is embedded with a telescopic groove, and the moving foot rod is telescopically placed in the telescopic groove, and a positioning screw threadedly runs through the side wall of the bottom end of the transparent slider and is tightened on the moving rod. on the outer wall of the foot bar. 2. The novel compass according to claim 1, characterized in that: said transparent slider is provided with an indicator line corresponding to the axis of the pen holder. 3. The novel compasses according to claim 2, characterized in that: the bottom surface of the fixed foot rod is embedded with a groove, the positioning pin is placed in the groove, and a top tightening screw threadedly runs through the bottom end of the fixed foot rod The outer wall is tight against the positioning pin. 4 . The novel compass according to claim 3 , characterized in that: an extension part extends outward from the connection position between the fixed foot rod and the slide bar, and the slide bar is screwed to the extension part. 5 . 5. The novel compasses according to claim 4, characterized in that: an eraser is provided at the top of the fixed foot rod.