TECHNICAL FIELD

The invention relates to at least one linear motor for allowing linear motion to be obtained from electrical energy, comprising at least one core that can create a magnetic field thereon and is provided in a cylindrical longitudinal form, at least one wrap that can generate force when current is passed through the magnetic field by being positioned around the said core, and at least one motion unit that can move at least partially linearly depending on the magnetic field created along the core by being positioned around the core.

PRIOR ART

Linear motors are motors that move on a horizontal axis (X or Y axes) whose mechanical motion is not a circular motion. That is, the linear motors generate force in a vector direction. In the linear motor, the rotor “forcer” and the stator include the rail consisting of magnets. In this design, the load is directly connected to the motor. The linear motion is provided without the use of a mechanism that converts any linear motion to linear motion.

In the current art, DC linear motors are available in different geometries as U channel, tube and flat linear motors and with brushes or without brushes depending on the brush condition. The moving part of DC linear motors consists of permanent magnets, the stationary part consists of wraps or the moving part consists of wraps and the stationary part consists of permanent magnets. In both designs, the magnetic field is obtained by means of the permanent magnets. The force is generated by the current-carrying conductor according to the Lorentz law in the obtained magnetic field. Depending on the geometric structure, DC linear motors include units such as the main body, the stationary part (stator), the moving part (forcer), the brush, the coil connection terminals, the linear bearings and the support shafts.

Length and force/current ratio are the most important parameters of DC linear motors. Theoretically, these motors can be designed at the desired length, but as the length increases, the control circuits also increase and become more complex. In order to produce the motor longer, its moving part must be designed longer. This both increases the cost and reveals the need for more complex control circuits. When the structures in the current art are examined; the problems of the art include that the force/current ratio could not be exceeded to a certain level, there is a length limitation, and when it is produced longer, additional electronic circuits are needed.

Application No. KR20060115456 known in the literature relates to a linear motor. The linear motor of the invention has a cylindrical shaft. There is a stator with multiple wraps around this cylindrical shaft and a body with a cylindrical rotor surrounding said stator. This body can move along the cylindrical shaft. This movement can be made regular by the guide rails.

Application No. JP2010166718 known in the literature relates to a slider device. The slider device of the invention ensures that the linear motion is obtained by means of magnetic energy. The slider device includes a stator provided on a cylindrical shaft. There is a mover with permanent magnets surrounding the stator. Here, the cylindrical shaft of the device is selectively magnetized and provides linear motion of the said mover.

As a result, all the problems mentioned above made it necessary to make an innovation in the related technical field.

SUMMARY OF THE INVENTION

The present invention relates to a linear motor in order to eliminate the above-mentioned disadvantages and to bring new advantages to the relevant technical field.

Another object of the invention is to provide a linear motor with a high force/current ratio.

Another object of the invention is to provide a linear motor without length limitation.

Another object of the invention is to provide a linear motor with reduced need for additional electronic circuits.

In order to realize all the objects mentioned above and which will emerge from the detailed description below, the invention is at least one linear motor for allowing linear motion to be obtained from electrical energy, comprising at least one core that can create a magnetic field thereon and is provided in a cylindrical longitudinal form, at least one wrap that can generate force when current is passed through the magnetic field by being positioned around the said core, and at least one motion unit that can move at least partially linearly depending on the magnetic field created along the core by being positioned around the core. Accordingly, its innovation is that the core includes at least one support wall connected to at least one side thereof, and at least one collector unit, which extends parallel to the core by connecting to the said support wall and has a collector part thereon at regular intervals, at least one brush is positioned on the side of the motion unit facing the collector unit in order to transfer energy from said collector unit to at least one wrap positioned around the core. Thus, a linear motor with a high force/current ratio, without length limitation, and a reduced need for additional electronic circuits can be obtained.

The feature of a possible embodiment of the invention is that said wrap is wound on separate coils. Thus, it is ensured that the wraps can be energized independently of each other.

The feature of another possible embodiment of the invention is that there is at least one slide provided parallel to the core on the support wall and at least one bearing that can provide linear motion on the said slide by being positioned on the motion unit. Thus, it is ensured that the motion unit can move linearly along the core.

The feature of another possible embodiment of the invention is that there is at least one damping element on the support wall on the side facing the motion unit. Thus, in case the motion element hits the support wall, the energy can be damped.

The feature of another possible embodiment of the invention is that the motion unit has at least one first piece and at least one second piece, and these pieces can be connected to each other with at least one fastener. Thus, it is ensured that the first piece and the second piece can be connected to each other.

The feature of another possible embodiment of the invention is that there is at least one insulating part between the collector parts. Thus, energy transfer between the collector parts is prevented.

The feature of another possible embodiment of the invention is that there is at least one coil terminal support between the collector parts. Thus, it ensures that the coil terminals are protected against damage during the linear motion of the motion unit.

BRIEF DESCRIPTION OF THE FIGURES

Figure 1 shows a representative perspective view of the linear motor of the invention. Figure 2 shows a representative sectional view of the linear motor of the invention.

Figure 3 shows a representative perspective view of the motion unite in the linear motor of the invention.

Figure 4 shows a representative top view of the collector unit in the linear motor of the invention.

Figure 5 shows a representative side view of the linear motor of the invention.

DETAILED DESCRIPTION OF THE INVENTION

In this detailed description, subject matter of the invention is explained with examples that will not have any limiting effect, for better understanding the subject matter.

Figure 1 shows a representative perspective view of the linear motor (1) of the invention. Accordingly, said linear motor (1) is a transmission device that directly converts electrical energy into linear motion mechanical energy without any intermediate conversion mechanism. The linear motor (1) works in accordance with Lorentz law. The usage areas of this linear motor (1) include the areas where linear motion is needed such as CNC benches, robotic and automation applications, missile positioning systems, conveyor systems, crane systems, and magnetic levitation. Another area where the invention can be used is generators. These generators can generate electrical energy by using wave energy, which is a clean and renewable energy source.

Figure 2 shows a representative sectional view of the linear motor (1) of the invention. Accordingly, the linear motor (1) has at least one support wall (10) and at least one core (20) connected with said support wall (10). In a possible embodiment of the invention, there are two said support walls (10) and these support walls (10) are positioned on opposite sides of the core (20). The support walls (10) essentially ensure that parts such as the core (20), slide (13), collector unit (40) on the linear motor (1) are held together. There is at least one slot (11) for connecting the core (20) with the support wall (10). Said slot (11) is the opening provided on the support wall (10) in accordance with the form of the core (20). The support wall (10) ensures that the core (20) is kept in a predetermined position on the linear motor (1). There is at least one damping element (12) on the support wall (10) to provide force absorption in case the motion unit (30) (which will be explained in the following sections) hits. In a possible embodiment of the invention, said damping element (12) can be at least one of the damping elements (12) such as spring, flexible wedge. Said core (20) is in the form of a cylindrical shaft. The core (20) is produced from material through which magnetic flux will pass. It allows the wind (22) to be made at least partially around the core. There is at least one wrap (22) around the said core (20). Said wrap (22) is essentially coil wire wrapped around the coils (21) in a multi-layered manner. The coil (21) can be positioned side by side in multiple numbers around the core (20). In this way, each wrap (22) can be energized separately. The wrap (22) generates a force when current passes through it in the magnetic field. The magnetic field is created by the magnets (34) positioned on the inner surface of the motion unit (30).

Figure 3 shows a representative perspective view of the motion unit (30) in the linear motor (1) of the invention. Said motion unit (30) is positioned such that the magnetic field is created around the core (20). The motion unit (30) is manufactured from material with high magnetic permeability and essentially in a cylindrical shape. It is configured to move at least partially in the extension direction of the core (20). In a possible embodiment of the invention, the motion unit (30) has at least one first piece (31) and at least one second piece (32). Said first piece (31) and said second piece (32) are formed to be essentially symmetrical to each other. By manufacturing the motion unit (30) in a segmented structure, ease of positioning around the core (20) is provided. The first piece (31) and the second piece (32) are connected to each other by at least one fastener (33). At least one magnet (34) is positioned on the inward side of the motion unit (30). Said magnet (34) creates the magnetic field required for the movement of the linear motor (1). In a possible embodiment of the invention, there are two magnets (34) on the motion unit (30). Both magnets (34) are positioned so that there is a distance between them equal to the width of the wrap (22). There is at least one brush (35) on the side of the motion unit (30) facing the collector unit (40). Said brush (35) provides the transmission of electrical energy to the collector parts (41). In this way, the energy is transferred to the collector unit (40) and to the wraps (22) by means of the collector unit (40).

Figure 4 shows a representative top view of the collector unit (40) of the linear motor (1) of the invention. Said collector unit (40) is energized to provide displacement of the motion unit (30). The collector unit (40) extends along the core (20) and parallel to the core (20). There are collector parts (41) provided side by side on the collector unit (40). Said collector parts (41) are preferably placed at the same length as the wrap (22) and in contact with the brushes (35). The collector parts (41) are provided in two rows side by side and in multiple numbers along the core (20). There is at least one coil terminal support (42) between the collector parts (41) positioned side-by-side and at least one insulating part (43) between the collector parts (41) positioned along the core (20). The said coil terminal support (42) ensures that the coil terminals are protected against damage during the (30) linear motion of the motion unit. The said insulating part (43) acts as insulation by being positioned between the collector parts (41). The collector unit (40) is preferably connected to the support walls (10) at both ends.

By means of the brushes (35) that move together with the motion unit (30), only the wraps (22) under the magnets (34) are energized, and unnecessary energizing of other wraps (22) is prevented. In addition, the wraps (22) that perform their duties by generating force are cooled until they are energized again. By means of the collector parts (41) made with the same width as the wraps (22), only the wraps (22) under the magnets (34) are energized, so no additional control circuit is needed when they are made longer.

Figure 5 shows a representative side view of the linear motor (1) of the invention. Accordingly, at least one slide (13) is positioned between the support walls (10) to allow the motion unit (30) to move linearly along the core (20). Said slide (13) is positioned parallel to the core (20) and is manufactured from non-magnetic material. On the slide (13), there is at least one bearing (36) connected with the motion unit (30). The bearing (36) is essentially a linear bearing (36). The bearing (36) enables the motion unit (30) to move linearly on the slide (13). The embodiment of the bearing (36) and slide (13) serves to reduce the friction of the motion unit (30) while it moves linearly on the core (20). In this way, energy losses are minimized. In a possible embodiment of the invention, there are multiple bearings (36) and slide (13) around the motion unit (30). Thus, the linear motion of the motion unit (30) is facilitated.

In a possible study of the invention, the magnetic flux created by the magnets (34) placed on the inner surfaces of the motion unit (30) of the linear motor (1) completes its path through the shell of the moving unit, the wraps (22) in the air gap and the core (20). Among the magnets (34) located in the motion unit (30), the inner surface of the first magnet (34) is placed as N pole, its outer surface is S pole, and the inner surface of the second magnet (34) is placed as S pole and its outer surface is N pole. Thus, the magnetic flux created by the magnets (34) flows in the same direction on the core (20). Since the magnets (34) are designed to be SN and NS, respectively, the magnetic flux direction they form is opposite to each other. In order to obtain force in the same direction, the wraps (22) located under the magnets (34) in the motion unit (30) are fed by being polarized against each other. Since most of the wraps (22) remain in the magnetic field, force is generated in each region. Which wrap (22) will be activated is determined mechanically by the collector parts (41) and brushes (35) placed at the same length as the wraps (22). The wrap (22) that fulfills its duty is allowed to be cooled down until it is energized again, and unnecessary energizing of the other unused wraps (22) is prevented. This eliminates the need for additional sensors and electronic circuits used to determine the energizing sequence of the wrap (22).

The important parameters to be improved in linear motors are length limitation and high force/current ratio. A higher force/current ratio is obtained with the linear motor (1), which is designed cylindrically, and the length limitation is substantially resolved. There is no need for additional electronic circuits since the linear motor (1) is designed cylindrically, has a higher force/current ratio than its counterparts since almost all of the wraps (22) remain in the magnetic field, there is no length limitation, and when the collector unit (40) is made longer with the brush (35) structure. When compared with other motors, the fact that the force generated in the linear motor (1) is higher in response to the same current value applied, that it can be designed in the desired length and that it does not require complex control circuits even if it is produced longer are the inventive aspects brought by the invention to the present art.

The scope of protection of the invention is specified in the attached claims and it cannot be limited to what is explained in this detailed description for the sake of example. It is clear that a person skilled in the art can provide similar embodiments in the light of the above, without departing from the main theme of the invention.

REFERENCE NUMBERS GIVEN IN THE FIGURE

I Linear Motor

10 Support Wall

I I Slot

12 Damping Element

13 Slide

20 Core

21 Coil

22 Wrap

30 Motion Unit

31 First Piece

32 Second Piece

33 Fastener

34 Magnet

35 Brush

36 Bearing

40 Collector Unit

41 Collector Part

42 Coil Terminal Support

43 Insulating Part