Electromagnetic adsorption scribing ruler convenient to take, place and move

Abstract

In order to overcome the defects in the prior art, the utility model relates to an electromagnetic adsorption graduated ruler convenient to take, place and move, which comprises a graduated ruler, an electromagnet and a battery, a handle is fixed on the graduated ruler, the battery is arranged in the handle, an upper insulating sleeve and a lower insulating sleeve are respectively sleeved on the handle, and the upper insulating sleeve is sleeved on the lower insulating sleeve. The handle between the upper insulating sleeve and the lower insulating sleeve is also sleeved with an insulating rotating sleeve, the lower edge of the upper insulating sleeve is respectively provided with two upper static contacts, and the positive electrode and the negative electrode of the battery are respectively connected with the two upper static contacts; the upper edge of the lower insulating sleeve is provided with two lower static contacts, the winding wire is connected with the two lower static contacts, two forward-conducting parallel wires and two reverse-conducting staggered wires are embedded in the side wall of one side and the side wall of the other side of the insulating rotating sleeve respectively, the ends of the two forward-conducting parallel wires and the ends of the two reverse-conducting staggered wires are connected with movable contacts respectively, and the insulating rotating sleeve is rotated. The winding wires can be conducted in the forward direction or in the reverse direction or disconnected. The marking device is not prone to remanence, convenient to take, place and move and suitable for marking lines on the surface of a steel workpiece.

Description

Technical Field

[0001] The utility model relates to an electromagnetic adsorption scale which is convenient for taking, placing and moving. Background Art

[0002] Before cutting or welding steel workpieces, it is often necessary to mark lines on the surface of the steel workpiece. If an ordinary signing pen is used to mark the lines, the marked lines are easily smeared inadvertently. For this reason, the existing technology uses a sharp carving knife or awl to mark the lines along a steel ruler placed on the surface of the steel workpiece. Compared with writing on paper, marking lines on the surface of the steel workpiece requires more force, and the steel ruler placed on the surface of the steel workpiece is easily displaced during the marking process, thereby affecting the accuracy of the marking.

[0003] Chinese utility model patent publication number CN203902064U discloses a multifunctional ruler for on-site display board production. The ruler comprises a ruler body, a box body fixed to the ruler body, and a first electromagnet, a second electromagnet, a battery compartment, and a switch button mounted within the box body. The first and second electromagnets are connected to the battery compartment and the switch button in sequence via wiring. A pen slot is provided along one side of the box body, with a slot cover mounted on the pen slot, which is locked to the pen slot by a latch. The multifunctional ruler can be attached to a steel display board (made of iron) using the electromagnet. This provides a suggestion to those skilled in the art: adding an electromagnet to a steel ruler can be used to secure the ruler by suction, preventing it from moving under force when marking lines on the surface of a steel workpiece.

[0004] As we all know, an electromagnet consists of an iron core and wire wound around it. When powered, it generates magnetic force. However, with repeated use, the core and surrounding iron components gradually become magnetized, maintaining a strong magnetic attraction even when the power is disconnected. This makes it difficult to remove or move a steel ruler equipped with an electromagnet even when the power is disconnected. Summary of the Invention

[0005] The technical problem to be solved by the utility model is how to overcome the above-mentioned defects of the prior art and provide an electromagnetic adsorption scale which is convenient to take out and put in and move.

[0006] In order to solve the above technical problems, the electromagnetic adsorption scale that is easy to take, put and move includes a scale 1, an electromagnet 2, and a battery 3. The electromagnet includes an iron core 4 and a winding 5 wound on the iron core 4. It is characterized in that: a handle 6 is fixed on the scale 1, and a battery compartment is provided inside the handle 6. The battery is arranged in the battery compartment. The handle 6 is respectively covered with an upper insulating sleeve 7 and a lower insulating sleeve 8. The handle 6 between the upper insulating sleeve 7 and the lower insulating sleeve 8 is also covered with an insulating rotating sleeve 9. Two upper static contacts are respectively provided on the lower edge of the upper insulating sleeve 7. A, B, the positive and negative electrodes of the battery 3 are respectively connected to the two upper static contacts A, B through wires or conductors; two lower static contacts a, b are respectively provided on the upper edge of the lower insulating sleeve 8, and the windings are respectively connected to the two lower static contacts a, b through wires or conductors. Two forward-conducting parallel wires 10 are embedded in the side wall of one side of the insulating rotating sleeve 9; two reverse-conducting staggered wires 11 are embedded in the side wall of the other side of the insulating rotating sleeve 9, and the ends of the two forward-conducting parallel wires 10 and the ends of the two reverse-conducting staggered wires 11 are respectively connected to a moving contact 12.

[0007] Note: The two reverse-conducting interlaced wires 11 do not touch each other, but their projections on the plane passing through the axis cross each other.

[0008] When in use, the insulating rotating sleeve 9 rotates until the moving contacts 12 at the ends of the two forward-conducting parallel wires 10 are respectively connected to the two upper static contacts A and B and the two lower static contacts a and b, the battery 3 and the winding 5 are forward-conducted, and the electromagnet generates magnetic force, which can firmly adsorb the scale 1 on the surface of the steel workpiece. When holding a steel cone or a carving knife and forcefully drawing lines along the scale 1, the scale 1 is not easily displaced.

[0009] After another 90-degree rotation, the two upper static contacts A and B and the two lower static contacts a and b are no longer in contact with the moving contact 12, the circuit between the battery 3 and the winding 5 is disconnected, and the magnetism of the electromagnet disappears. The ruler (usually made of iron) can be easily moved or placed.

[0010] Rotating another 90 degrees, the two upper static contacts A and B and the two lower static contacts a and b are connected to the movable contact 9 at the end of the reverse-conducting interlaced wire 11, and the battery 3 and the winding 5 are reverse-conducting. The electromagnet generates magnetic force, which can once again attract the scale 1 to the surface of the steel workpiece.

[0011] The only difference between forward conduction and reverse conduction is that the positions of the north and south poles of the electromagnet's magnetic field are reversed, and the magnetic forces are directed in opposite directions. With this design, the electromagnet's core is magnetized in opposite directions during two consecutive uses, canceling each other out. This reduces the residual magnetism in the electromagnet's core to a negligible level.

[0012] As an optimization, there are two electromagnets, each fixed on the scale 1. The two ends of the winding 5 of the two electromagnets are connected in parallel and respectively connected to the two lower static contacts a and b. This design has a strong magnetic attraction and is easy to fix.

[0013] As an optimization, the scale ruler 1 includes a first section 13 and a second section 14 connected at a right angle. The two electromagnet cores 4 are in an inverted U shape and are fixed to the first and second sections 13, 14 of the scale ruler, respectively. The handle 6 is fixed at the connection between the first and second sections 13, 14. This design is suitable for marking square steel profiles or other steel work surfaces with vertical surfaces.

[0014] The electromagnetic adsorption scale which is easy to take, place and move has a simple structure. During use, the iron core of the electromagnet and the surrounding scale are not easily magnetized. When power is turned on, magnetic force is generated, which is easy to fix. When power is turned off, the magnetic force disappears, which makes it easy to take, place and move. It is suitable for use when marking lines on the surface of steel workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following is a further description of the electromagnetic adsorption scale that is easy to take, place and move with reference to the accompanying drawings:

[0016] Figure 1 The utility model is a three-dimensional structural diagram of an electromagnetic adsorption scale which is convenient for taking, placing and moving.

[0017] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the insulating rotating sleeve 9 shown in FIG;

[0018] Figure 3 This is a schematic diagram of the circuit structure of the electromagnetic adsorption scale which is easy to take, place and move when the electromagnet is forwardly conducting (the insulating rotating sleeve 9 is expanded in the figure).

[0019] Figure 4 This is a schematic diagram of the circuit structure of the electromagnetic adsorption scale that is easy to take, place, and move when the electromagnet is disconnected (the insulating rotating sleeve 9 is expanded in the figure);

[0020] Figure 5 This is a schematic diagram of the circuit structure of the electromagnetic adsorption scale which is easy to take, place and move when the electromagnet is reversely conducting (the insulating rotating sleeve 9 is expanded in the figure).

[0021] In the figure: 1 is a scale, 2 is an electromagnet, 3 is a battery, 4 is an iron core, 5 is a winding, 6 is a handle, 7 is an upper insulating sleeve, 8 is a lower insulating sleeve, 9 is an insulating rotating sleeve, 10 is a forward conducting parallel wire, 11 is a reverse conducting staggered wire, 12 is a moving contact, 13 is the first section, 14 is the second section, 15 is a rotary cover of the electromagnetic chamber, A and B are two upper static contacts, a and b are two lower static contacts. DETAILED DESCRIPTION

[0022] Implementation method 1: Figure 1-5 As shown, the electromagnetic adsorption scale that is easy to take, put and move includes a scale 1, an electromagnet 2, and a battery 3. The electromagnet includes an iron core 4 and a winding 5 wound on the iron core 4. It is characterized in that: a handle 6 is fixed on the scale 1, a battery compartment is provided inside the handle 6, and the battery is arranged in the battery compartment. The handle 6 is respectively covered with an upper insulating sleeve 7 and a lower insulating sleeve 8. An insulating rotating sleeve 9 is also covered on the handle 6 between the upper insulating sleeve 7 and the lower insulating sleeve 8. Two upper static contacts A and B are respectively provided on the lower edge of the upper insulating sleeve 7. The positive and negative poles of the battery 3 are respectively connected to the two upper static contacts A and B through wires or conductors; two lower static contacts a and b are respectively provided on the upper edge of the lower insulating sleeve 8, and the two ends of the winding 5 are respectively connected to the two lower static contacts a and b through wires or conductors. Two forward-conducting parallel wires 10 are embedded in the side wall of one side of the insulating rotating sleeve 9; two reverse-conducting staggered wires 11 are embedded in the side wall of the other side of the insulating rotating sleeve 9, and the ends of the two forward-conducting parallel wires 10 and the ends of the two reverse-conducting staggered wires 11 are respectively connected to a moving contact 12.

[0023] There are two electromagnets, which are fixed on the scale 1 respectively. The two ends of the windings 5 ​​of the two electromagnets are connected in parallel and are connected to the two lower static contacts a and b respectively.

[0024] The scale ruler 1 includes a first section 13 and a second section 14 connected to each other, and the first section 13 and the second section 14 are at a right angle. The iron cores 4 of the two electromagnets are in an inverted U shape and are respectively fixed on the first section 13 and the second section 14 of the scale ruler. The handle 6 is fixed at the connection between the first section 13 and the second section 14.

Claims

1. An electromagnetic adsorption scale that is easy to take, place, and move, comprising a scale (1), an electromagnet (2), and a battery (3), wherein the electromagnet comprises an iron core (4) and a winding (5) wound around the iron core (4), and is characterized in that: A handle (6) is fixed on the scale ruler (1), and a battery compartment is provided inside the handle (6). The battery is arranged in the battery compartment. An upper insulating sleeve (7) and a lower insulating sleeve (8) are respectively provided on the handle (6). An insulating rotating sleeve (9) is also provided on the handle (6) between the upper insulating sleeve (7) and the lower insulating sleeve (8). Two upper static contacts (A, B) are respectively provided on the lower edge of the upper insulating sleeve (7). The positive and negative electrodes of the battery (3) are respectively connected to the two upper static contacts (A, B) through wires or conductors. Two lower static contacts (a, b) are respectively provided on the upper edge of the lower insulating sleeve (8), and the winding is respectively connected to the two lower static contacts (a, b) through a wire or a conductor. Two forward-conducting parallel wires (10) are embedded in the side wall of one side of the insulating rotating sleeve (9); two reverse-conducting staggered wires (11) are embedded in the side wall of the other side of the insulating rotating sleeve (9), and the ends of the two forward-conducting parallel wires (10) and the ends of the two reverse-conducting staggered wires (11) are respectively connected to a moving contact (12).

2. The electromagnetic adsorption scale that is easy to take, place and move according to claim 1 is characterized in that: There are two electromagnets, each of which is fixed on the scale (1). The two ends of the windings (5) of the two electromagnets are connected in parallel and are respectively connected to the two lower static contacts (a, b).

3. The electromagnetic adsorption scale that is easy to take, place and move according to claim 1 is characterized in that: The scale ruler (1) comprises a first section (13) and a second section (14) connected to each other, the first section (13) and the second section (14) being at a right angle to each other, the iron cores (4) of the two electromagnets being in an inverted U shape and being fixed to the first section (13) and the second section (14) of the scale ruler respectively, and the handle (6) being fixed at the connection between the first section (13) and the second section (14).

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