CN218140802U - Marking device - Google Patents

Abstract

A marking device belongs to the technical field of marking auxiliary tools. The utility model provides a current compasses teaching aid for teaching effect is general when drawing circular, arc line, and can't master the problem of the accurate angle of arc line. The utility model discloses a base, bull stick, clamping part, handle and fixed axle are provided with the fixed axle on the base, rotate on the fixed axle and install the bull stick, and the bull stick is the telescopic link, and slidable mounting has the clamping part on the bull stick, and processing has the centre gripping hole on the clamping part, and the marking off pen passes through the centre gripping hole and establishes with the bull stick to be connected, still is provided with the handle on the base, and the opposite face at the fixed axle is arranged to the handle. Through the utility model discloses a marking device can draw circular, arc line and straight line, and marking device has the multiple supplementary function of drawing the figure, and the difficult displacement that produces of base, improves the effect of drawing the figure.

Description

Marking device

Technical Field

The utility model belongs to the technical field of the appurtenance that rules, especially, relate to teaching is with supplementary marking off teaching aid.

Background

In the teaching process, especially in mathematics and science teaching, a ruler, compasses and other teaching aids are often used for drawing on a blackboard, the existing compasses teaching aid comprises a needle gauge and a pen gauge, wherein the end part of the needle gauge is provided with a sucking disc instead of a steel needle, the sucking disc can be directly adsorbed on the blackboard to play a fixing effect, if the steel needle is adopted, the blackboard is easily damaged, and the pen gauge part is provided with a clamping piece for clamping chalk;

the existing compass teaching aid has the following defects in use:

1. in the using process of the existing compass teaching aid, because a plastic sucker is used at the front end of a needle gauge, the suction force of the sucker is gradually weakened along with the using time and chalk dust accumulated on a blackboard, so that the suction force of the sucker at the front end of the needle gauge is low, when a user draws a picture on the blackboard, the user needs to constantly keep the needle gauge fixed by one hand and rotate the pen gauge part by the other hand to draw a circle, but the drawing effect is influenced by slight sliding of the sucker at the head of the needle gauge in the circle drawing process, and the user is very inconvenient to constantly hold the needle gauge by one hand in the drawing process;

2. 2, current compasses teaching aid need cooperate the angle that the arc line could be confirmed to the protractor teaching aid when drawing the circle pitch arc, under the prerequisite that does not have the protractor teaching aid, except 90 °, 180 and 270 the arc line, its accuracy is hardly guaranteed to the circular arc of other degrees.

Therefore, the application provides a compasses marking teaching aid convenient to draw circle, circular arc line in the teaching for solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model discloses research and development purpose is that the effect is general when drawing circular, arc line in order to solve current compasses teaching aid for teaching, and can't master the problem of the accurate angle of arc line, has given about in the following the utility model discloses a brief summary to provide about the utility model discloses a basic understanding of some aspects. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to identify key or critical elements of the invention or to delineate the scope of the invention.

The technical scheme of the utility model:

a marking device comprises a base, a rotating rod, a clamping part, a handle and a fixed shaft, wherein the fixed shaft is arranged on the base, the rotating rod is rotatably arranged on the fixed shaft and is a telescopic rod, the clamping part is slidably arranged on the rotating rod, a clamping hole is processed in the clamping part, a marking pen is connected with the rotating rod through the clamping hole, the handle is further arranged on the base, and the handle is arranged on the opposite surface of the fixed shaft.

Furthermore, the rotating rod comprises an outer telescopic rod and an inner telescopic rod, one end of the outer telescopic rod is rotatably connected with the fixed shaft, the inner telescopic rod is slidably connected with the outer telescopic rod, sliding grooves are processed in the outer telescopic rod and the inner telescopic rod, and the clamping part is slidably arranged in the sliding grooves of the outer telescopic rod and the inner telescopic rod.

Furthermore, the outer telescopic rod and the inner telescopic rod are uniformly provided with clamping grooves, the clamping part is provided with a spring and a pressing piece, the pressing piece is a plastic pressing piece, and the pressing piece is connected with the upper end face of the spring.

Furthermore, the centre gripping pore symmetry is provided with the slipmat, and the slipmat is PVC foam pad or silica gel cushion, and two slipmats symmetry bonds on the inside wall in centre gripping hole.

Furthermore, the base is circular base, and the terminal surface of base is processed there is the calibrated scale, and the handle passes through the bolt fastening on the calibrated scale.

Furthermore, the anti-slip device also comprises an anti-slip head, wherein the anti-slip head is bonded on the end surface of the fixed shaft and is a silica gel anti-slip head.

The utility model discloses following beneficial effect has:

1. the utility model discloses a marking device, in the process of drawing circular or circular arc line, teacher's one hand gripping handle, with the fixed axle on the base support on the blackboard, the other hand stirs the bull stick around base a week or certain angle, accomplishes the drawing of circular or circular arc line promptly, compare in ordinary compasses teaching aid needs hand needle gauge, the handle is more convenient for grasp, and it is more stable to apply pressure to the blackboard direction through holding the handle than hand needle gauge, the base is difficult for producing the aversion, drawing effect is better;

2. the utility model discloses a marking device has the calibrated scale in the back processing of base, when drawing the circular arc line, can guarantee the precision of the circular arc line number of degrees of drawing according to the angle of the calibrated scale determination circular arc line at back.

Drawings

Fig. 1 is a schematic view of the overall structure of a scribing apparatus;

FIG. 2 is a top view of a scoring device;

FIG. 3 is a bottom view of a scoring device;

FIG. 4 is a front view of a scoring device;

FIG. 5 is a partial schematic view of FIG. 1;

fig. 6 is a partial schematic view of fig. 2.

In the figure, 1-a base, 2-a rotating rod, 3-an outer telescopic rod, 4-an inner telescopic rod, 5-a clamping part, 6-a clamping groove, 7-a marking pen, 8-an anti-slip head, 9-a handle, 10-a pressing piece, 11-a clamping hole, 12-an anti-slip pad, 13-a dial, 14-a fixed shaft and 15-a spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described below with reference to specific embodiments shown in the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The utility model discloses the connection that mentions divide into fixed connection and can dismantle the connection, fixed connection (for connecting for non-detachability) includes but not limited to conventional fixed connection modes such as hem connection, rivet connection, adhesive bonding and welded connection, can dismantle the connection and include but not limited to conventional dismantlement modes such as threaded connection, buckle connection, pin joint and hinged joint, when not definitively injecing concrete connection mode, acquiescence is always can find at least one kind of connected mode in current connected mode and can realize this function, and the technical staff in the field can select by oneself as required. For example: the fixed connection selects welding connection, and the detachable connection selects hinge connection.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Embodiment 1, the embodiment is described with reference to fig. 1 to 6, and the scribing apparatus of this embodiment includes a base 1, a rotating rod 2, a clamping portion 5, a handle 9 and a fixing shaft 14, the base 1 is provided with the fixing shaft 14, the rotating rod 2 is rotatably mounted on the fixing shaft 14, the rotating rod 2 is a telescopic rod, the clamping portion 5 is slidably mounted on the rotating rod 2, the clamping portion 5 is provided with a clamping hole 11, a scribing pen 7 is connected with the rotating rod 2 through the clamping hole 11, the base 1 is further provided with the handle 9, the handle 9 is disposed on an opposite surface of the fixing shaft 14, the rotating rod 2 includes two parts, namely an outer telescopic rod 3 and an inner telescopic rod 4, the inner telescopic rod 4 is slidably mounted in the outer telescopic rod 3, and sliding grooves are respectively formed on the outer telescopic rod 3 and the inner telescopic rod 4, the clamping part 5 is slidably mounted in the sliding groove, clamping grooves 6 are uniformly distributed on the outer telescopic rod 3 and the inner telescopic rod 4, the distance between every two adjacent clamping grooves 6 is the same, the distance length can be defined by self according to needs, a spring 15 and a pressing piece 10 are mounted on the clamping part 5, the pressing piece 10 is a plastic pressing sheet, the pressing piece 10 is connected with the upper end face of the spring 15, the spring 15 is contracted by pressing the pressing piece 10 to move the clamping part 5, the spring 15 is rebounded by loosening the pressing piece 10 to clamp the spring 15 in the clamping grooves 6, a dial 13 is processed on the back of the base 1, the dial 13 and a handle are positioned on the same end face, an anti-slip head 8 is further bonded at the end part of the fixed shaft 14, and the anti-slip head 8 is a silica gel anti-slip head;

when a scribing device is used for drawing a circle, firstly inserting a scribing pen 7 into a clamping hole 11, adhering an anti-slip pad 12 on the inner wall of the clamping hole 11, wherein the anti-slip pad 12 is made of PVC foam pad, so that the scribing pen 7 is inserted into the clamping hole 11 to ensure that the scribing pen cannot slide, the scribing pen 7 can be made of chalk, a white board pen or the like, after the scribing pen 7 is fixed, pulling an inner telescopic rod 4 to a required length by sliding the inner telescopic rod 4, then pressing down a pressing piece 10 to compress a spring 15, sliding a clamping part 5, selecting a clamping groove 6 at which position the clamping part 5 is clamped according to the radius length of the drawn circle, sliding the clamping part 5 to the clamping groove 6, loosening the pressing piece 10, rebounding the spring 15 to be clamped in the clamping groove 6, fixing the clamping part 5, finally holding a handle 9, abutting an anti-slip head 8 on a base 1 against the blackboard, wherein the anti-slip head 8 is made of silica gel, if more chalk dust is accumulated on the blackboard or the soft head, the blackboard or the soft head is abutted against the anti-slip head 8, and the blackboard is rotated by taking the anti-slip rod 7 as a circle of the anti-slip pen to draw the circular blackboard, and the circular drawing pen is completed by rotating the anti-slip rod 2;

when the arc line is drawn, the rotating rod 2 can be stirred to rotate on the arc line for a specified angle according to the angle of the accurate arc line of the dial disc 13 on the base 1, so that the degree accuracy of drawing the arc line is improved;

the marking device can also be used for drawing straight lines, and the marking pen on the clamping part 5 is driven to draw straight lines by pushing and pulling the inner telescopic rod 4 or the sliding clamping part 5.

The present embodiment is only illustrative and not intended to limit the scope of the patent, and those skilled in the art can make modifications to the part of the patent without departing from the spirit of the patent.

Claims (6)

1. A line marking apparatus characterized by: the scribing pen comprises a base (1), a rotating rod (2), a clamping part (5), a handle (9) and a fixing shaft (14), wherein the fixing shaft (14) is arranged on the base (1), the rotating rod (2) is rotatably mounted on the fixing shaft (14), the rotating rod (2) is a telescopic rod, the clamping part (5) is slidably mounted on the rotating rod (2), a clamping hole (11) is formed in the clamping part (5), the scribing pen (7) is connected with the rotating rod (2) through the clamping hole (11), the handle (9) is further arranged on the base (1), and the handle (9) is arranged on an opposite surface of the fixing shaft (14).

2. A line marking apparatus as claimed in claim 1, wherein: the rotating rod (2) comprises an outer telescopic rod (3) and an inner telescopic rod (4), one end of the outer telescopic rod (3) is rotatably connected with the fixed shaft (14), the inner telescopic rod (4) is slidably connected with the outer telescopic rod (3), sliding grooves are machined in the outer telescopic rod (3) and the inner telescopic rod (4), and the clamping part (5) is slidably arranged in the sliding grooves of the outer telescopic rod (3) and the inner telescopic rod (4).

3. A scribing apparatus according to claim 2, wherein: the clamping grooves (6) are evenly distributed on the outer telescopic rod (3) and the inner telescopic rod (4), the spring (15) and the pressing piece (10) are installed on the clamping portion (5), the pressing piece (10) is a plastic pressing sheet, and the pressing piece (10) is connected with the upper end face of the spring (15).

4. A scribing apparatus according to claim 3, wherein: clamping hole (11) symmetry is provided with slipmat (12), and slipmat (12) are PVC foam pad or silica gel cushion, and two slipmat (12) symmetry bonds on the inside wall of clamping hole (11).

5. A line marking apparatus as claimed in claim 1 or 4, wherein: the base (1) is a circular base, a dial (13) is machined on the end face of the base (1), and the handle (9) is fixed on the dial (13) through bolts.

6. A scribing apparatus according to claim 5, wherein: the anti-skid device is characterized by further comprising an anti-skid head (8), wherein the anti-skid head (8) is bonded on the end face of the fixed shaft (14), and the anti-skid head (8) is a silica gel anti-skid head.

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