Electric Apparatus Including Coil And Auxiliary Magnet

Abstract

The present invention provides an electric device comprising: a plurality of first coils arranged in a circular shape with respect to a central axis; a plurality of first cores each disposed inside the plurality of first coils; a plurality of first magnetic bodies each disposed to correspond to one surface of the plurality of first coils and the plurality of first cores; and a plurality of first auxiliary magnets each disposed to correspond to the other surface of the plurality of first coils and the plurality of first cores.

Description

Technology Field

[0001] The present invention relates to an electric device comprising a coil and an auxiliary magnet, and in particular to an electric device comprising a coil and an auxiliary magnet disposed on one surface of a core inside the coil. Background Technology

[0003] Generally, a generator is an electrical device that converts mechanical energy into electrical energy, and an electric motor is an electrical device that converts electrical energy into mechanical energy; in these devices, rotational or linear motion is generated by utilizing the attractive force (attraction) and repulsive force (repulsion) between an electromagnet supplying electromagnetic force and a magnetic material, or between an electromagnet and a permanent magnet, or between electromagnets.

[0004] Meanwhile, in electric motors, a magnetic field is generated by flowing current through a coil constituting an electromagnet, and the rotor is rotated using the magnetic field. In the case of an electric motor that uses attractive force by forming the rotor with a magnetic material, the generation of back EMF is reduced, which prevents rapid performance degradation during high-speed operation, but there is a problem in that the initial starting force is relatively small, making it difficult to handle relatively high loads. On the other hand, in the case of an electric motor that uses attractive and repulsive forces by forming the rotor with a permanent magnet or an electromagnet, the initial starting force is relatively large, allowing it to easily handle relatively high loads, but there is a problem in that back EMF is generated as the rotational speed increases, causing performance to rapidly degrade during high-speed operation. The problem to be solved

[0005] The present invention aims to solve these problems by providing an electric device comprising a coil and an auxiliary magnet, wherein the efficiency of the coil is improved by placing an auxiliary magnet on one side of a core inside a coil constituting an electromagnet, so that when current is applied to the coil, the magnetic force against the magnetic material increases, and when current is cut off to the coil, the magnetic force against the magnetic material decreases.

[0006] In addition, the present invention has another objective of providing an electric device comprising a coil and an auxiliary magnet, wherein the auxiliary magnet is stably attached to the core while enhancing the electromagnet function of the coil by applying direct current to the coil and arranging the auxiliary magnet in an attractive relationship on one surface of the core inside the coil. means of solving the problem

[0007] To solve the above problem, the present invention provides an electric device comprising: a plurality of first coils arranged in a circular shape with respect to a central axis; a plurality of first cores each disposed inside the plurality of first coils; a plurality of first magnetic bodies each disposed to correspond to one surface of the plurality of first coils and the plurality of first cores; and a plurality of first auxiliary magnets each disposed to correspond to the other surface of the plurality of first coils and the plurality of first cores.

[0008] In addition, the plurality of first auxiliary magnets may be attached to the other side of the plurality of first cores so as to have a polarity of attractive relationship with respect to the plurality of first coils.

[0009] Additionally, the electric device further comprises: a plurality of second coils arranged in a circular manner with respect to the central axis and spaced apart from the plurality of first coils along a direction parallel to the central axis; a plurality of second cores each disposed inside the plurality of second coils; and a plurality of second magnetic bodies each disposed to correspond to one surface of the plurality of second coils and the plurality of second cores, wherein the plurality of first auxiliary magnets may be attached to the opposite surface of the plurality of first cores and the opposite surface of the second cores so as to have polarity in an attractive relationship with respect to the plurality of first coils and the plurality of second coils, respectively.

[0010] And, the electric device further comprises: a plurality of third coils arranged in a circular manner with respect to the central axis and spaced apart from the plurality of first coils along a direction parallel to the central axis; a plurality of third cores each disposed inside the plurality of third coils; and a plurality of second auxiliary magnets each disposed to correspond to the opposite surfaces of the plurality of third coils and the plurality of third cores, wherein the plurality of first magnetic bodies are each disposed to correspond to one surface of the plurality of third coils and the plurality of third cores, and the plurality of second auxiliary magnets each may be attached to the opposite surfaces of the plurality of third cores to have polarity in an attractive relationship with respect to the plurality of third coils.

[0011] In addition, the plurality of first coils and the plurality of third coils may be arranged to have polarities that are repulsive to each other.

[0012] And, the electric device comprises: a plurality of second coils arranged in a circular manner with respect to the central axis and spaced apart from the plurality of first coils along a direction parallel to the central axis; a plurality of second cores each disposed inside the plurality of second coils; a plurality of third coils arranged in a circular manner with respect to the central axis and spaced apart from the plurality of first coils along a direction parallel to the central axis; a plurality of third cores each disposed inside the plurality of third coils; a plurality of fourth coils arranged in a circular manner with respect to the central axis and spaced apart from the plurality of third coils along a direction parallel to the central axis; a plurality of fourth cores each disposed inside the plurality of fourth coils; a plurality of second magnetic bodies each disposed to correspond to one surface of the plurality of second coils and the plurality of second cores; and a plurality of third magnetic bodies each disposed to correspond to one surface of the plurality of fourth coils and the plurality of fourth cores. It further includes a plurality of second auxiliary magnets arranged to correspond to the opposite surfaces of the plurality of third coils and the plurality of third cores and the opposite surfaces of the plurality of fourth coils and the plurality of fourth cores, wherein the plurality of first magnetic bodies are arranged to correspond to one surface of the plurality of third coils and the plurality of third cores, and the plurality of first auxiliary magnets are attached to the opposite surfaces of the plurality of first cores and the plurality of second cores so as to have polarity in an attractive relationship with respect to the plurality of first coils and the plurality of second coils, and the plurality of second auxiliary magnets can be attached to the opposite surfaces of the plurality of third cores and the plurality of fourth cores so as to have polarity in an attractive relationship with respect to the plurality of third coils and the plurality of fourth coils.

[0013] In addition, the plurality of first coils and the plurality of third coils may be arranged to have polarities that are repulsive to each other.

[0014] And, the winding axes of the plurality of first coils may be parallel to the center axis or perpendicular to the center axis.

[0015] Meanwhile, the present invention provides an electric device comprising: a plurality of first coils arranged in a circular pattern around a cylinder with respect to a central axis; a plurality of first cores each disposed inside the plurality of first coils; a first magnetic body disposed to correspond to one surface of the plurality of first coils and the plurality of first cores; and a plurality of first auxiliary magnets each disposed to correspond to the other surface of the plurality of first coils and the plurality of first cores.

[0016] In addition, the plurality of first auxiliary magnets may be attached to the other side of the plurality of first cores so as to have a polarity of attractive relationship with respect to the plurality of first coils.

[0017] On the other hand, the present invention provides an electric device comprising: a plurality of upper coils spaced apart from each other on the upper part of a central axis; a plurality of lower coils spaced apart from each other on the lower part of the central axis; a plurality of upper cores and a plurality of lower cores respectively disposed inside the plurality of upper coils and the plurality of lower coils; a plurality of magnetic bodies respectively disposed to correspond to one surface of the plurality of upper coils and the plurality of upper cores and one surface of the plurality of lower coils and the plurality of lower cores; a plurality of upper auxiliary magnets respectively disposed to correspond to the other surface of the plurality of upper coils and the plurality of upper cores; and a plurality of lower auxiliary magnets respectively disposed to correspond to the other surface of the plurality of lower coils and the plurality of lower cores.

[0018] In addition, the plurality of upper auxiliary magnets may be attached to the opposite side of the plurality of upper cores so as to have a polarity of attractive relationship with respect to the plurality of upper coils, and the plurality of lower auxiliary magnets may be attached to the opposite side of the plurality of lower cores so as to have a polarity of attractive relationship with respect to the plurality of lower coils.

[0019] In addition, the plurality of upper coils and the plurality of lower coils may be arranged to have polarities that are repulsive to each other. Effects of the invention

[0020] The present invention has the effect of improving the efficiency of a coil by placing an auxiliary magnet on one side of a core inside a coil constituting an electromagnet, so that when current is applied to the coil, the magnetic force on the magnetic material increases and when current is cut off to the coil, the magnetic force on the magnetic material decreases.

[0021] In addition, the present invention applies direct current to a coil and places an auxiliary magnet on one side of the core inside the coil in an attractive relationship, thereby improving the electromagnet function of the coil and having the effect of the auxiliary magnet being stably attached to the core. Brief explanation of the drawing

[0022] FIGS. 1 and FIGS. 2 are cross-sectional views illustrating the magnetic force between a coil and an auxiliary magnet in the ON and OFF states of an electric device according to a first embodiment of the present invention, respectively. FIGS. 3 and FIGS. 4 are cross-sectional views illustrating the on and off states of an electrical device according to a first embodiment of the present invention, respectively. FIGS. 5 and FIGS. 6 are cross-sectional views illustrating the on and off states of an electrical device according to a second embodiment of the present invention, respectively. FIGS. 7 and FIGS. 8 are cross-sectional views illustrating the on and off states of an electrical device according to a third embodiment of the present invention, respectively. FIGS. 9 and FIGS. 10 are cross-sectional views illustrating the on and off states of an electrical device according to the fourth embodiment of the present invention, respectively. FIGS. 11 and FIGS. 12 are cross-sectional views illustrating the on and off states of an electrical device according to the fifth embodiment of the present invention, respectively. FIGS. 13 and FIGS. 14 are cross-sectional views illustrating the on and off states of an electrical device according to the sixth embodiment of the present invention, respectively. FIGS. 15 and FIGS. 16 are cross-sectional views illustrating the on and off states of an electrical device according to the seventh embodiment of the present invention, respectively. FIGS. 17 and FIGS. 18 are a cross-sectional view and a longitudinal section, respectively, illustrating the on state and off state of an electrical device according to the eighth embodiment of the present invention. FIGS. 19 and FIGS. 20 are cross-sectional views illustrating the on and off states of an electrical device according to the ninth embodiment of the present invention, respectively. Specific details for implementing the invention

[0023] Hereinafter, specific details for implementing the present invention will be described in detail with reference to the drawings.

[0024] FIGS. 1 and FIGS. 2 are cross-sectional views illustrating the magnetic force between a coil and an auxiliary magnet in the on and off states of an electric device according to the first embodiment of the present invention, respectively.

[0025] As illustrated in FIGS. 1 and 2, in an electric device (110 in FIG. 3) according to the first embodiment of the present invention, a core (122) is disposed inside the first coil (120), an auxiliary magnet (160) is disposed on one side of the core (122), and a magnetic body (140) is disposed on the other side of the core (122). The auxiliary magnet (160), which is a permanent magnet, is disposed such that its polarity has an attractive relationship with respect to the electromagnet formed by the coil (120) and the core (122).

[0026] For example, the S pole of the auxiliary magnet (160) may be positioned to face the N pole of the electromagnet (120, 122), or the N pole of the auxiliary magnet (160) may be positioned to face the S pole of the electromagnet (120, 122).

[0027] And, the auxiliary magnet (160) is in contact with one side of the core (122), and the magnetic body (140) is spaced apart from the other side of the core (122).

[0028] For example, the thickness of the auxiliary magnet (160) and the core (122) corresponds to the first and second lengths (L1, L2), respectively, and the distance between the core (122) and the magnetic body (140) may correspond to the second length (L2), where the first length (L1) may be greater than, equal to, or smaller than the second length (L2).

[0029] Here, when direct current is applied (on) to the coil (120), a magnetic field is generated, and the coil (120) and the core (122) act as electromagnets. When direct current is turned off to the coil (120), the generation of the magnetic field is stopped, and the core (122) acts as a magnetic resistor that transmits the magnetic field of the auxiliary magnet (160). As the magnetic force of the auxiliary magnet (160) increases, the efficiency of the first coil (120) and the first core (122) can increase.

[0030] Specifically, as illustrated in FIG. 1, in the first embodiment of the present invention, when direct current is applied (on) to the coil (120), the electromagnets of the coil (120) and the core (122) generate a magnetic field. Since the polarity of the auxiliary magnet (160) has an attractive relationship with the polarity of the electromagnets of the coil (120) and the core (122), a magnetic force (Fon) is applied to the magnetic body (140) by the sum of the magnetic field of the electromagnets of the coil (120) and the core (122) and the magnetic field of the auxiliary magnet (160).

[0031] On the other hand, in the first comparative example, the magnetic body (40) is spaced apart from the other side of the core (22), the thickness of the core (22) corresponds to a second length (L2), and the distance between the core (22) and the magnetic body (40) corresponds to a third length (L3). When direct current is applied (on) to the coil (20), the electromagnets of the coil (20) and the core (22) inside the coil (20) generate a magnetic field, and a first comparative magnetic force (Fc1) is applied to the magnetic body (40) by the magnetic field of the electromagnets of the coil (20) and the core (22).

[0032] And, in the second comparative example, an auxiliary magnet (60) is placed in contact with one surface of an equivalent magnet (21) corresponding to the electromagnet formed by the first coil (120) and first core (122) of the first embodiment and the electromagnet formed by the coil (20) and core (22) of the first comparative example, and a magnetic body (40) is placed spaced apart on the other surface of the equivalent magnet (21), and the thicknesses of the auxiliary magnet (60) and the equivalent magnet (21) correspond to the first and second lengths (L1, L2), respectively, and the distance between the equivalent magnet (21) and the magnetic body (40) corresponds to the third length (L3). Since the polarity of the auxiliary magnet (60) has an attractive relationship with the polarity of the equivalent magnet (21), the magnetic body (40) is attracted to the second comparative by the sum of the magnetic field of the auxiliary magnet (60) and the magnetic field of the equivalent magnet (21). A magnetic force (Fc2) is applied.

[0033] Here, since magnetic force is proportional to the magnetic field (magnetic flux density) and inversely proportional to the square of the separation distance, the on magnetic force (Fon) of the first embodiment of the present invention, produced by the coil (120) and core (122) to which direct current is applied and the auxiliary magnet (150), is sufficiently greater than the first comparative magnetic force (Fc1) of the first comparative example produced by the coil (20) and core (22) to which direct current is applied (on), and can be substantially the same as the second comparative magnetic force (Fc2) of the second comparative example produced by the equivalent magnet (21) and the auxiliary magnet (50). (Fc1< <Fon~Fc2)

[0034] For example, the total magnetic force (Fon) can be more than twice the first comparison magnetic force (Fc1). (2Fc1≤Fon)

[0035] And, as illustrated in FIG. 2, in the first embodiment of the present invention, when the direct current application to the coil (120) is turned off, the electromagnets of the coil (120) and the core (122) stop generating a magnetic field. Since the auxiliary magnet (160) is separated from the magnetic body (140) by the sum of the second and third distances (L2, L3) (L2+L3) and the core (122) operates simply as a magnetic resistance, an off magnetic force (Foff) is applied to the magnetic body (140) by a magnetic field that is attenuated compared to the magnetic field at a point separated from the auxiliary magnet (160) by the third distance (L3).

[0036] On the other hand, in the third comparative example, the magnetic body (40) is spaced apart from the other side of the auxiliary magnet (60), the thickness of the auxiliary magnet (60) corresponds to the first length (L1), and the distance between the auxiliary magnet (60) and the magnetic body (40) corresponds to the third length (L3), and a third comparative magnetic force (Fc3) is applied to the magnetic body (40) by the magnetic field of the auxiliary magnet (60), and the third comparative magnetic force (Fc3) of the third comparative example may be substantially the same as the first comparative magnetic force (Fc1) of the first comparative example.

[0037] Here, the off magnetic force (Foff) of the first embodiment of the present invention, formed by the coil (120) and core (122) with DC applied blocked and the auxiliary magnet (150), may be sufficiently smaller than the third comparative magnetic force (Fc3) of the third comparative example formed by the auxiliary magnet (60) and the first comparative magnetic force (Fc1) of the first comparative example formed by the coil (20) and core (22) with DC applied (on), respectively. (Foff< <Fc3~Fc1)

[0038] For example, the off magnetic force (Foff) may be less than or equal to (1 / 2) times the first comparison magnetic force (Fc1). (Foff ≤ (1 / 2)Fc1)

[0039] That is, since the on magnetic force (Fon) of the first embodiment of the present invention is sufficiently larger than the off magnetic force (Foff) of the first embodiment of the present invention (Foff < <Fon), 자성체(140)가 코일(120) 및 코어(122)에 가까워지는 시간구간에서는 코일(120)에 직류를 인가하여 자성체(140)에 온 자기력(Fon)을 부가하여 자성체(140)를 상대적으로 큰 힘으로 끌어당기고, 자성체(140)가 코일(120) 및 코어(122)로부터 멀어지는 시간구간에서는 코일(120)에 대한 직류 인가를 차단하여 자성체(140)에 오프 자기력(Foff)을 부가하여 자성체(140)를 상대적으로 작은 힘으로 끌어당겨 자성체(140)가 해당 코일(120) 및 코어(122)로부터 용이하게 멀어지도록 할 수 있다.

[0040] Accordingly, in the first comparative example, where a direct current is applied to the coil (20) to apply a first comparative magnetic force (Fc1) to the magnetic body (40) in the time interval when the magnetic body (40) approaches the coil (20) and the core (22) to attract the magnetic body (40), and the direct current to the coil (20) is blocked to not attract the magnetic body (40) in the time interval when the magnetic body (40) moves away from the coil (20) and the core (122), the difference in force between the two time intervals is the first comparative magnetic force (Fc1), whereas in the first comparative example, a direct current is applied to the coil (120) to apply a magnetic force (Fon) to the magnetic body (140) in the time interval when the magnetic body (140) approaches the coil (120) and the core (122) to attract the magnetic body (140), and the magnetic body (140) is the coil (120) and In the first embodiment, the direct current to the coil (120) is cut off during the time interval away from the core (122) to apply an off magnetic force (Foff) to the magnetic body (140) and attract the magnetic body (140). The difference in force between the two time intervals is the value obtained by subtracting the off magnetic force (Foff) from the on magnetic force (Fon) (Fon-Foff). Since the difference between the on magnetic force (Fon) and the off magnetic force (Foff) (Fon-Foff) is greater than the first comparison magnetic force (Fc1), the efficiency of the electric device (110) is improved.

[0041] For example, the difference between the on magnetic force (Fon) and the off magnetic force (Foff) (Fon-Foff) may be (5 / 2) times or more the first comparison magnetic force (Fc1). (Fon-Foff ≥ (5 / 2)Fc1)

[0042] Various types of electrical devices to which such auxiliary magnets are applied are explained with reference to the drawings.

[0043] FIGS. 3 and FIGS. 4 are cross-sectional views illustrating the on and off states of an electrical device according to the first embodiment of the present invention, respectively, and will be explained with reference to FIGS. 1 and FIGS. 2 together.

[0044] As illustrated in FIGS. 3 and 4, the electric device (110) according to the first embodiment of the present invention is an axial flux type motor and includes a plurality of first coils (120) and a plurality of first cores (122), a plurality of first magnetic bodies (140), and a plurality of first auxiliary magnets (160).

[0045] Specifically, a plurality of first cores (122) are arranged inside a plurality of first coils (120) having winding axes parallel to a central axis (180), and a plurality of first coils (120), a plurality of first cores (122), a plurality of first magnetic bodies (140), and a plurality of first auxiliary magnets (160) are arranged in a circular manner with respect to the central axis (180).

[0046] A plurality of first coils (120) and a plurality of first cores (122) are each coupled to a plurality of stators (124), and a plurality of stators (124) are each coupled to a housing (not shown), and a plurality of first coils (120) and a plurality of first cores (122) can be fixed to the housing through the plurality of stators (124).

[0047] A plurality of first magnetic bodies (140) are each arranged to correspond to one side of a plurality of first coils (120) and a plurality of first cores (122) and are coupled to a magnetic body holder (142), and the magnetic body holder (142) is coupled to a central axis (180), and the plurality of first magnetic bodies (140), magnetic body holder (142), and central axis (180) can rotate with respect to the housing.

[0048] A plurality of first auxiliary magnets (160) are arranged to correspond to the opposite sides of a plurality of first coils (120) and a plurality of first cores (122), and are attached to the opposite sides of a plurality of first cores (122) such that their polarities have an attractive relationship with respect to a plurality of first coils (120), and can be fixed to a housing through a plurality of stators (124).

[0049] A plurality of first coils (120) may be arranged so that their polarities are the same or opposite (crossed), and a plurality of first auxiliary magnets (160) may be arranged so that their polarities are the same or opposite (crossed).

[0050] That is, if the polarity of the plurality of first auxiliary magnets (160) and the polarity of the plurality of first coils (120) have an attractive relationship with each other, the polarity of the plurality of first coils (120) may be the same or opposite to each other, and the polarity of the plurality of first auxiliary magnets (160) may be the same or opposite to each other.

[0051] For example, a plurality of first cores (122) and a plurality of first magnetic bodies (140) may each include a ferromagnetic material such as iron (Fe), nickel (Ni), and cobalt (Co).

[0052] The central axis (180) is rotatably coupled to the central axis holder (182), the central axis holder (182) is coupled to the motor holder (184), and the motor holder (184) is coupled to the housing.

[0053] In the first embodiment, a plurality of first coils (120), a plurality of first cores (122), and a plurality of first auxiliary magnets (160) are fixed and a plurality of first magnetic bodies (140) are rotated as an example, but in other embodiments, a plurality of first coils (120), a plurality of first cores (122), and a plurality of first auxiliary magnets (160) may rotate and a plurality of first magnetic bodies (140) may be fixed.

[0054] In this electric device (110), as illustrated in FIG. 3, during the time interval when a plurality of first magnetic bodies (140) approach a corresponding plurality of first coils (120) and a plurality of first cores (122), direct current is applied (on) to the plurality of first coils (120) to apply a magnetic force (Fon) to the plurality of first magnetic bodies (140) to which the plurality of first coils (120), the plurality of first cores (122), and the plurality of first auxiliary magnets (160) approach.

[0055] And, as illustrated in FIG. 4, during the time interval when a plurality of first magnetic bodies (140) move away from a plurality of first coils (120) and a plurality of first cores (122), the DC power applied to the plurality of first coils (120) is turned off, and an off magnetic force (Foff) is applied to the plurality of first magnetic bodies (140) moving away from the plurality of first coils (120), the plurality of first cores (122), and the plurality of first auxiliary magnets (160).

[0056] Accordingly, the efficiency of the multiple first coils (120) of the electronic device (110) is improved.

[0057] In addition, since the polarity of the plurality of first auxiliary magnets (160) is arranged on the other side of the plurality of first cores (122) such that the polarity of the plurality of first auxiliary magnets (160) has an attractive relationship with the polarity of the plurality of first coils (120), the plurality of first auxiliary magnets (160) can be stably attached to the plurality of first cores (122).

[0058] FIGS. 5 and FIGS. 6 are cross-sectional views illustrating the on and off states of an electric device according to a second embodiment of the present invention, respectively, and are described with reference to FIGS. 1 and FIGS. 2, and the description of parts identical to those of the first embodiment is omitted.

[0059] As illustrated in FIGS. 5 and 6, the electric device (210) according to the second embodiment of the present invention is an axial flux type motor and includes a plurality of first coils (220) and a plurality of first cores (222), a plurality of second coils (226) and a plurality of second cores (228), a plurality of first magnetic bodies (240), a plurality of second magnetic bodies (244), and a plurality of first auxiliary magnets (260).

[0060] Specifically, a plurality of first cores (222) are arranged inside a plurality of first coils (220) having winding axes parallel to the central axis (280), and a plurality of second cores (228) are arranged inside a plurality of second coils (226) having winding axes parallel to the central axis (280), and a plurality of first coils (220), a plurality of first cores (222), a plurality of second coils (226), a plurality of second cores (228), a plurality of first magnetic bodies (240), a plurality of second magnetic bodies (244), and a plurality of first auxiliary magnets (260) are each arranged in a circular manner with respect to the central axis (280).

[0061] A plurality of first coils (220), a plurality of first cores (222), a plurality of second coils (226), and a plurality of second cores (228) are arranged spaced apart from each other along a direction parallel to the central axis (280), and a plurality of first auxiliary magnets (260) are arranged between the plurality of first coils (220), a plurality of first cores (222), a plurality of second coils (226), and a plurality of second cores (228).

[0062] A plurality of first coils (220), a plurality of first cores (222), a plurality of second coils (226), and a plurality of second cores (228) are each coupled to a plurality of stators (224), and a plurality of stators (224) are each coupled to a housing (not shown), and a plurality of first coils (220), a plurality of first cores (222), a plurality of second coils (226), and a plurality of second cores (228) can be fixed to the housing through the plurality of stators (224).

[0063] A plurality of first magnetic bodies (240) are each arranged to correspond to one side of a plurality of first coils (220) and a plurality of first cores (222) and are coupled to a magnetic body holder (242), and a plurality of second magnetic bodies (244) are each arranged to correspond to one side of a plurality of second coils (226) and a plurality of second cores (228) and are coupled to a magnetic body holder (242), and two magnetic body holders (242) are coupled to a central axis (280), and the plurality of first magnetic bodies (240), a plurality of second magnetic bodies (244), a magnetic body holder (242), and a central axis (280) can rotate with respect to a housing.

[0064] A plurality of first auxiliary magnets (260) are arranged to correspond to the opposite sides of a plurality of first coils (220) and a plurality of first cores (222) and the opposite sides of a plurality of second coils (226) and a plurality of second cores (228), respectively, and are attached to the opposite sides of a plurality of first cores (222) and a plurality of second cores (228) such that their polarities have an attractive relationship with respect to a plurality of first coils (220) and a plurality of second coils (226), and can be fixed to a housing through a plurality of stators (224).

[0065] In the second embodiment, one first auxiliary magnet (260) is placed between the first and second coils (220, 226) as an example, but in other embodiments, two or more first auxiliary magnets (260) connected by an attractive relationship may be placed between the first and second coils (220, 226).

[0066] A plurality of first coils (220) may be arranged so that their polarities are the same or opposite (crossed), a plurality of second coils (226) may be arranged so that their polarities are the same or opposite (crossed), and a plurality of first auxiliary magnets (260) may be arranged so that their polarities are the same or opposite (crossed).

[0067] That is, if the polarity of a plurality of first auxiliary magnets (260) and the polarity of a plurality of first coils (220) have an attractive relationship with each other, and the polarity of a plurality of first auxiliary magnets (260) and the polarity of a plurality of second coils (226) have an attractive relationship with each other, then the polarity of a plurality of first coils (220) may be the same or opposite to each other, the polarity of a plurality of second coils (226) may be the same or opposite to each other, and the polarity of a plurality of first auxiliary magnets (260) may be the same or opposite to each other.

[0068] For example, a plurality of first cores (222), a plurality of second cores (228), and a plurality of first magnetic bodies (140) may each include a ferromagnetic material such as iron (Fe), nickel (Ni), and cobalt (Co).

[0069] The central axis (280) is rotatably coupled to the central axis holder (282), the central axis holder (282) is coupled to the motor holder (284), and the motor holder (284) is coupled to the housing.

[0070] In the second embodiment, a plurality of first coils (220), a plurality of first cores (222), a plurality of second coils (226), a plurality of second cores (228), and a plurality of first auxiliary magnets (260) are fixed and a plurality of first magnetic bodies (240) and a plurality of second magnetic bodies (244) are rotated as an example, but in other embodiments, a plurality of first coils (220), a plurality of first cores (222), a plurality of second coils (226), a plurality of second cores (228), and a plurality of first auxiliary magnets (260) are rotated and a plurality of first magnetic bodies (240) and a plurality of second magnetic bodies (244) may be fixed.

[0071] In this electric device (210), as illustrated in FIG. 5, in the time interval when a plurality of first magnetic bodies (240) and a plurality of second magnetic bodies (244) are approaching a plurality of first coils (220), a plurality of first cores (222), a plurality of second coils (226), and a plurality of second cores (228), direct current is applied (on) to the plurality of first coils (220) and a plurality of second coils (226) to apply a magnetic force (Fon) to the plurality of first magnetic bodies (240) to which the plurality of first coils (220), a plurality of first cores (222), and a plurality of first auxiliary magnets (260) are approaching, and a magnetic force (Fon) is applied to the plurality of second magnetic bodies (244) to which the plurality of second coils (226), a plurality of second cores (228), and a plurality of first auxiliary magnets (260) are approaching.

[0072] And, as illustrated in FIG. 6, in the time interval when a plurality of first magnetic bodies (240) and a plurality of second magnetic bodies (244) are moving away from a plurality of first coils (220), a plurality of first cores (222), a plurality of second coils (226), and a plurality of second cores (228), the application of DC current to a plurality of first coils (220) and a plurality of second coils (226) is turned off, thereby applying an off magnetic force (Foff) to a plurality of first magnetic bodies (240) to which a plurality of first coils (220), a plurality of first cores (222), and a plurality of first auxiliary magnets (260) are moving away, and applying an off magnetic force (Foff) to a plurality of second magnetic bodies (244) to which a plurality of second coils (226), a plurality of second cores (228), and a plurality of first auxiliary magnets (260) are moving away.

[0073] Accordingly, the efficiency of the plurality of first coils (220) and the plurality of second coils (226) of the electronic device (210) is improved.

[0074] And, a plurality of first auxiliary magnets (260) are arranged on the other side of a plurality of first cores (222) such that the polarity of a plurality of first auxiliary magnets (260) has an attractive relationship with the polarity of a plurality of first coils (220), and a plurality of first auxiliary magnets (260) are arranged on the other side of a plurality of second cores (228) such that the polarity of a plurality of first auxiliary magnets (260) has an attractive relationship with the polarity of a plurality of second coils (226), so that a plurality of first auxiliary magnets (260) can be stably attached to a plurality of first cores (222) and a plurality of second cores (228).

[0075] FIGS. 7 and FIGS. 8 are cross-sectional views illustrating the on and off states of an electric device according to the third embodiment of the present invention, respectively, and are described with reference to FIGS. 1 and FIGS. 2, and descriptions of parts identical to those of the first and second embodiments are omitted.

[0076] As illustrated in FIGS. 7 and 8, the electric device (310) according to the third embodiment of the present invention is an axial flux type motor and includes a plurality of first coils (320) and a plurality of first cores (322), a plurality of third coils (330) and a plurality of third cores (330), a plurality of first magnetic bodies (340), a plurality of first auxiliary magnets (360), and a plurality of second auxiliary magnets (362).

[0077] Specifically, a plurality of first cores (322) are arranged inside each of a plurality of first coils (320) having a winding axis parallel to the central axis (380), and a plurality of third cores (332) are arranged inside each of a plurality of third coils (330), and a plurality of first coils (320), a plurality of first cores (322), a plurality of third coils (330), a plurality of third cores (332), a plurality of first magnetic bodies (340), a plurality of first auxiliary magnets (360), and a plurality of second auxiliary magnets (362) are each arranged in a circular manner with respect to the central axis (380).

[0078] A plurality of first coils (320) and a plurality of first cores (322) and a plurality of third coils (330) and a plurality of third cores (332) are arranged spaced apart from each other along a direction parallel to the central axis (380), and a plurality of first magnetic bodies (340) are arranged between the plurality of first coils (320) and a plurality of first cores (322) and the plurality of third coils (330) and a plurality of third cores (332).

[0079] A plurality of first coils (320), a plurality of first cores (322), a plurality of third coils (330), and a plurality of third cores (332) are each coupled to a plurality of stators (324), and a plurality of stators (324) are each coupled to a housing (not shown), and a plurality of first coils (320), a plurality of first cores (322), a plurality of third coils (330), and a plurality of third cores (332) can be fixed to the housing through the plurality of stators (324).

[0080] A plurality of first magnetic bodies (340) are each arranged to correspond to one side of a plurality of first coils (320) and a plurality of first cores (322) and one side of a plurality of third coils (330) and a plurality of third cores (332), and are coupled to a magnetic body holder (342), and the magnetic body holder (342) is coupled to a central axis (380), and the plurality of first magnetic bodies (340), magnetic body holder (342), and central axis (380) can rotate with respect to the housing.

[0081] A plurality of first auxiliary magnets (360) are arranged to correspond to the opposite sides of a plurality of first coils (320) and a plurality of first cores (322), and are attached to the opposite sides of a plurality of first cores (322) such that their polarities have an attractive relationship with respect to a plurality of first coils (320), and can be fixed to a housing through a plurality of stators (324).

[0082] A plurality of second auxiliary magnets (362) are arranged to correspond to the opposite sides of a plurality of third coils (330) and a plurality of third cores (332), and are attached to the opposite sides of a plurality of third cores (332) such that their polarities have an attractive relationship with respect to a plurality of third coils (330), and can be fixed to a housing through a plurality of stators (324).

[0083] A plurality of first coils (320) may be arranged so that their polarities are the same or opposite (crossed), a plurality of third coils (330) may be arranged so that their polarities are the same or opposite (crossed), a plurality of first auxiliary magnets (360) may be arranged so that their polarities are the same or opposite (crossed), and a plurality of second auxiliary magnets (362) may be arranged so that their polarities are the same or opposite (crossed).

[0084] That is, if the polarity of a plurality of first auxiliary magnets (360) and the polarity of a plurality of first coils (320) have an attractive relationship with each other, and the polarity of a plurality of second auxiliary magnets (362) and the polarity of a plurality of third coils (330) have an attractive relationship with each other, then the polarity of a plurality of first coils (320) may be the same or opposite to each other, the polarity of a plurality of third coils (330) may be the same or opposite to each other, the polarity of a plurality of first auxiliary magnets (360) may be the same or opposite to each other, and the polarity of a plurality of second auxiliary magnets (362) may be the same or opposite to each other.

[0085] A plurality of first coils (320) and a plurality of third coils (330) may be arranged such that when DC is applied (on), the polarities of the opposing electromagnets are in a repulsive or attractive relationship with each other, and a plurality of first auxiliary magnets (360) and a plurality of second auxiliary magnets (362) may be arranged such that the polarities of the opposing magnets are in a repulsive or attractive relationship with each other.

[0086] Here, when the opposing polarities of the electromagnets of the multiple first coils (320) and the electromagnets of the multiple third coils (330) are arranged in a repulsive relationship with each other by applying direct current (on), and the opposing polarities of the multiple first auxiliary magnets (360) and the multiple second auxiliary magnets (362) are arranged in a repulsive relationship with each other, the efficiency can be further improved.

[0087] For example, a plurality of first cores (322), a plurality of third cores (332), and a plurality of first magnetic bodies (340) may each include a ferromagnetic material such as iron (Fe), nickel (Ni), and cobalt (Co).

[0088] The central axis (380) is rotatably coupled to the central axis holder (382), the central axis holder (382) is coupled to the motor holder (384), and the motor holder (384) is coupled to the housing.

[0089] In the third embodiment, a plurality of first coils (320), a plurality of first cores (322), a plurality of third coils (330), a plurality of third cores (332), a plurality of first auxiliary magnets (360) and a plurality of second auxiliary magnets (362) are fixed and a plurality of first magnetic bodies (340) are rotated, but in other embodiments, a plurality of first coils (320), a plurality of first cores (322), a plurality of third coils (330), a plurality of third cores (332), a plurality of first auxiliary magnets (360) and a plurality of second auxiliary magnets (362) may rotate and a plurality of first magnetic bodies (340) may be fixed.

[0090] In this electric device (310), as illustrated in FIG. 7, during the time interval when a plurality of first magnetic bodies (340) approach a plurality of first coils (320) and a plurality of first cores (322) and a plurality of third coils (330) and a plurality of third cores (332), direct current is applied (on) to the plurality of first coils (320) and a plurality of third coils (330) to apply a magnetic force (Fon) to the plurality of first magnetic bodies (340) to which the plurality of first coils (320), a plurality of first cores (322) and a plurality of first auxiliary magnets (360) and a plurality of third coils (330), a plurality of third cores (332) and a plurality of second auxiliary magnets (362) approach.

[0091] And, as illustrated in FIG. 8, during the time interval when a plurality of first magnetic bodies (340) move away from a plurality of first coils (320) and a plurality of first cores (322) and a plurality of third coils (330) and a plurality of third cores (332), the DC power application to the plurality of first coils (320) and a plurality of third coils (330) is turned off, thereby applying an off magnetic force (Foff) to the plurality of first magnetic bodies (340) from which the plurality of first coils (320), a plurality of first cores (322), a plurality of first auxiliary magnets (360), a plurality of third coils (330), a plurality of third cores (332), and a plurality of second auxiliary magnets (362) are moving away.

[0092] Accordingly, the efficiency of the plurality of first coils (320) and the plurality of third coils (330) of the electronic device (310) is improved.

[0093] And, a plurality of first auxiliary magnets (360) are arranged on the other side of a plurality of first cores (322) such that the polarity of a plurality of first auxiliary magnets (360) has an attractive relationship with the polarity of a plurality of first coils (320), and a plurality of second auxiliary magnets (362) are arranged on the other side of a plurality of third cores (332) such that the polarity of a plurality of second auxiliary magnets (362) has an attractive relationship with the polarity of a plurality of third coils (330), so that a plurality of first auxiliary magnets (360) can be stably attached to a plurality of first cores (322) and a plurality of second auxiliary magnets (362) can be stably attached to a plurality of third cores (332).

[0094] FIGS. 9 and FIGS. 10 are cross-sectional views illustrating the on and off states of an electric device according to the fourth embodiment of the present invention, respectively, and are described with reference to FIGS. 1 and FIGS. 2, and descriptions of parts identical to those of the first to third embodiments are omitted.

[0095] As illustrated in FIGS. 9 and 10, the electric device (410) according to the fourth embodiment of the present invention is an axial flux type motor and comprises a plurality of first coils (420) and a plurality of first cores (422), a plurality of second coils (426) and a plurality of second cores (428), a plurality of third coils (430) and a plurality of third cores (430), a plurality of fourth coils (434) and a plurality of fourth cores (436), a plurality of first magnetic bodies (440), a plurality of second magnetic bodies (444), a plurality of third magnetic bodies (446), a plurality of first auxiliary magnets (460), and a plurality of second auxiliary magnets (462).

[0096] Specifically, a plurality of first cores (422) are each disposed inside a plurality of first coils (420) having a winding axis parallel to a central axis (480), a plurality of second cores (428) are each disposed inside a plurality of second coils (426), a plurality of third cores (432) are each disposed inside a plurality of third coils (430), and a plurality of fourth cores (436) are each disposed inside a plurality of fourth coils (434). A plurality of first coils (420), a plurality of first cores (422), a plurality of second coils (426), a plurality of second cores (428), a plurality of third coils (430), a plurality of third cores (432), a plurality of fourth coils (434), a plurality of fourth cores (436), a plurality of first magnetic bodies (440), a plurality of second magnetic bodies (444), a plurality of third magnetic bodies (446), a plurality The first auxiliary magnet (460) and a plurality of second auxiliary magnets (462) are each arranged in a circular pattern with respect to the central axis (480).

[0097] A plurality of first coils (420) and a plurality of first cores (422), a plurality of second coils (426) and a plurality of second cores (428), a plurality of third coils (430) and a plurality of third cores (432), a plurality of fourth coils (434) and a plurality of fourth cores (436) are arranged to be spaced apart from each other along a direction parallel to the central axis (480), a plurality of first auxiliary magnets (460) are arranged between a plurality of first coils (420) and a plurality of first cores (422) and a plurality of second coils (426) and a plurality of second cores (428), a plurality of first magnetic bodies (440) are arranged between a plurality of first coils (420) and a plurality of first cores (422) and a plurality of third coils (430) and a plurality of third cores (432), and a plurality of third coils (430) and a plurality A plurality of second auxiliary magnets (462) are arranged between the third core (432), a plurality of fourth coils (434), and a plurality of fourth cores (436).

[0098] A plurality of first coils (420) and a plurality of first cores (422), a plurality of second coils (426) and a plurality of second cores (428), a plurality of third coils (430) and a plurality of third cores (432), a plurality of fourth coils (434) and a plurality of fourth cores (436) are each coupled to a plurality of stators (424), and a plurality of stators (424) are each coupled to a housing (not shown), and a plurality of first coils (420) and a plurality of first cores (422), a plurality of second coils (426) and a plurality of second cores (428), a plurality of third coils (430) and a plurality of third cores (432), a plurality of fourth coils (434) and a plurality of fourth cores (436) can be fixed to the housing through a plurality of stators (424).

[0099] A plurality of first magnetic bodies (440) are each arranged to correspond to one side of a plurality of first coils (420) and a plurality of first cores (422) and one side of a plurality of third coils (430) and a plurality of third cores (432) and are coupled to a magnetic body holder (442); a plurality of second magnetic bodies (444) are each arranged to correspond to one side of a plurality of second coils (426) and a plurality of second cores (428) and are coupled to a magnetic body holder (442); a plurality of third magnetic bodies (446) are each arranged to correspond to one side of a plurality of third coils (434) and a plurality of third cores (436) and are coupled to a magnetic body holder (442); three magnetic body holders (442) are coupled to a central axis (480); a plurality of first magnetic bodies (440), a plurality of second magnetic bodies (444), a plurality of third magnetic bodies (446), The magnetic holder (442) and the central axis (480) can rotate relative to the housing.

[0100] A plurality of first auxiliary magnets (460) are arranged to correspond to the opposite sides of a plurality of first coils (420) and a plurality of first cores (422) and the opposite sides of a plurality of second coils (426) and a plurality of second cores (428), respectively, and are attached to the opposite sides of a plurality of first cores (422) and a plurality of second cores (428) such that their polarities have an attractive relationship with respect to a plurality of first coils (420) and a plurality of second coils (426), and can be fixed to a housing through a plurality of stators (424).

[0101] A plurality of second auxiliary magnets (362) are arranged to correspond to the opposite sides of a plurality of third coils (430) and a plurality of third cores (432) and the opposite sides of a plurality of fourth coils (434) and a plurality of fourth cores (436), respectively, and are attached to the opposite sides of a plurality of third cores (432) and a plurality of fourth cores (436) such that their polarities have an attractive relationship with respect to a plurality of third coils (430) and a plurality of fourth coils (434), and can be fixed to a housing through a plurality of stators (424).

[0102] A plurality of first coils (420) may be arranged so that their polarities are the same or opposite (crossed), a plurality of second coils (426) may be arranged so that their polarities are the same or opposite (crossed), a plurality of third coils (430) may be arranged so that their polarities are the same or opposite (crossed), a plurality of fourth coils (434) may be arranged so that their polarities are the same or opposite (crossed), a plurality of first auxiliary magnets (460) may be arranged so that their polarities are the same or opposite (crossed), and a plurality of second auxiliary magnets (462) may be arranged so that their polarities are the same or opposite (crossed).

[0103] That is, if the polarity of a plurality of first auxiliary magnets (460) and the polarity of a plurality of first coils (420) have an attractive relationship with each other, the polarity of a plurality of first auxiliary magnets (460) and the polarity of a plurality of second coils (426) have an attractive relationship with each other, the polarity of a plurality of second auxiliary magnets (462) and the polarity of a plurality of third coils (430) have an attractive relationship with each other, and the polarity of a plurality of second auxiliary magnets (462) and the polarity of a plurality of fourth coils (434) have an attractive relationship with each other, then the polarity of a plurality of first coils (420) can be the same or opposite to each other, the polarity of a plurality of second coils (426) can be the same or opposite to each other, the polarity of a plurality of third coils (430) can be the same or opposite to each other, the polarity of a plurality of fourth coils (434) can be the same or opposite to each other, and the polarity of a plurality of first auxiliary magnets (460) can be the same or opposite to each other. The polarities of the multiple second auxiliary magnets (462) may be the same or opposite to each other.

[0104] A plurality of first coils (420) and a plurality of third coils (430) may be arranged so that when DC is applied (on), the polarities of the opposing electromagnets are in a repulsive or attractive relationship with each other, and a plurality of first auxiliary magnets (460) and a plurality of second auxiliary magnets (462) may be arranged so that the polarities of the opposing magnets are in a repulsive or attractive relationship with each other.

[0105] Here, when the opposing polarities of the electromagnets of the multiple first coils (420) and the electromagnets of the multiple third coils (430) are arranged in a repulsive relationship with each other by applying direct current (on), and the opposing polarities of the multiple first auxiliary magnets (460) and the multiple second auxiliary magnets (462) are arranged in a repulsive relationship with each other, the efficiency can be further improved.

[0106] For example, a plurality of first cores (422), a plurality of second cores (428), a plurality of third cores (432), a plurality of fourth cores (436), a plurality of first magnetic bodies (440), a plurality of second magnetic bodies (444), and a plurality of third magnetic bodies (446) may each include a ferromagnetic material such as iron (Fe), nickel (Ni), and cobalt (Co).

[0107] The central axis (480) is rotatably coupled to the central axis holder (482), the central axis holder (482) is coupled to the motor holder (484), and the motor holder (484) is coupled to the housing.

[0108] In the fourth embodiment, a plurality of first coils (420), a plurality of first cores (422), a plurality of second coils (426), a plurality of second cores (428), a plurality of third coils (430), a plurality of third cores (432), a plurality of fourth coils (434), a plurality of fourth cores (436), a plurality of first auxiliary magnets (460) and a plurality of second auxiliary magnets (462) are fixed and a plurality of first magnetic bodies (440), a plurality of second magnetic bodies (444) and a plurality of third magnetic bodies (446) are rotated as an example, but in other embodiments, a plurality of first coils (420), a plurality of first cores (422), a plurality of second coils (426), a plurality of second cores (428), a plurality of third coils (430), a plurality of third cores (432), a plurality of fourth coils (434), a plurality of fourth cores (436), a plurality A first auxiliary magnet (460) and a plurality of second auxiliary magnets (462) may rotate, and a plurality of first magnetic bodies (440), a plurality of second magnetic bodies (444), and a plurality of third magnetic bodies (446) may be fixed.

[0109] In this electric device (410), as illustrated in FIG. 9, in the time interval approaching the plurality of first coils (420), plurality of first cores (422), plurality of second coils (426) and plurality of second cores (428), plurality of third coils (430) and plurality of third cores (432), plurality of fourth coils (434) and plurality of fourth cores (436) corresponding to the plurality of first coils (420), plurality of second coils (426), plurality of third coils (430), and plurality of fourth coils (434), direct current is applied (on) to the plurality of first coils (420), plurality of second coils (426), plurality of third coils (430), and plurality of fourth coils (434) so ​​as to the plurality of first coils (420), plurality of first cores (422), and plurality of first auxiliary magnets (460), and the plurality of third coils (430), and the plurality A magnetic force (Fon) is applied to a plurality of first magnetic bodies (440) to which a plurality of second cores (432) and a plurality of second auxiliary magnets (462) are approaching, a magnetic force (Fon) is applied to a plurality of second magnetic bodies (444) to which a plurality of second coils (426), a plurality of second cores (428), and a plurality of first auxiliary magnets (460) are approaching, and a magnetic force (Fon) is applied to a plurality of third magnetic bodies (446) to which a plurality of fourth coils (434), a plurality of fourth cores (436), and a plurality of second auxiliary magnets (462) are approaching.

[0110] And, as illustrated in FIG. 10, in the time interval away from the plurality of first coils (420), plurality of first cores (422), plurality of second coils (426) and plurality of second cores (428), plurality of third coils (430) and plurality of third cores (432), and plurality of fourth coils (434) and plurality of fourth cores (436) to which the plurality of first magnetic bodies (440), plurality of second magnetic bodies (444), and plurality of third magnetic bodies (446) correspond, the application of DC current to the plurality of first coils (420), plurality of second coils (426), plurality of third coils (430), and plurality of fourth coils (434) is cut off (turned off), thereby the plurality of first coils (420), plurality of first cores (422), and plurality of first auxiliary magnets (460) and the plurality of third coils (430) and plurality of third cores (432) An off magnetic force (Foff) is applied to a plurality of first magnetic bodies (340) to which a plurality of second auxiliary magnets (462) are moving away, an off magnetic force (Foff) is applied to a plurality of second magnetic bodies (444) to which a plurality of second coils (426), a plurality of second cores (428), and a plurality of first auxiliary magnets (460) are moving away, and an off magnetic force (Foff) is applied to a plurality of third magnetic bodies (446) to which a plurality of fourth coils (434), a plurality of fourth cores (436), and a plurality of second auxiliary magnets (462) are moving away.

[0111] Accordingly, the efficiency of the plurality of first coils (420), plurality of second coils (426), plurality of third coils (430), and plurality of fourth coils (434) of the electronic device (410) is improved.

[0112] And, a plurality of first auxiliary magnets (460) are arranged on the other side of a plurality of first cores (422) so that the polarity of a plurality of first auxiliary magnets (460) has an attractive relationship with the polarity of a plurality of first coils (420), and a plurality of first auxiliary magnets (460) are arranged on the other side of a plurality of second cores (428) so that the polarity of a plurality of first auxiliary magnets (460) has an attractive relationship with the polarity of a plurality of second coils (426), and a plurality of second auxiliary magnets (462) are arranged on the other side of a plurality of third cores (432) so that the polarity of a plurality of second auxiliary magnets (462) has an attractive relationship with the polarity of a plurality of third coils (430), and a plurality of second auxiliary magnets (462) are arranged on the other side of a plurality of fourth cores (436) so that the polarity of a plurality of second auxiliary magnets (462) has an attractive relationship with the polarity of a plurality of fourth coils (434). Since they are arranged on the other side, a plurality of first auxiliary magnets (460) can be stably attached to a plurality of first cores (422) and a plurality of second cores (428), and a plurality of second auxiliary magnets (462) can be stably attached to a plurality of third cores (432) and a plurality of fourth cores (436).

[0113] FIGS. 11 and FIGS. 12 are cross-sectional views illustrating the on and off states of an electric device according to the fifth embodiment of the present invention, respectively, and are described with reference to FIGS. 1 and FIGS. 2 together, and descriptions of parts identical to those of the first to fourth embodiments are omitted.

[0114] As illustrated in FIGS. 11 and 12, the electric device (510) according to the fifth embodiment of the present invention is a radial flux type motor and includes a plurality of first coils (520) and a plurality of first cores (522), a plurality of first magnetic bodies (540), and a plurality of first auxiliary magnets (560).

[0115] Specifically, a plurality of first cores (522) are arranged inside a plurality of first coils (520) having a winding axis perpendicular to the central axis (580) and directed toward the central axis (580), and a plurality of first coils (520), a plurality of first cores (522), a plurality of first magnetic bodies (540), and a plurality of first auxiliary magnets (560) are arranged in a circular manner with respect to the central axis (580).

[0116] A plurality of first coils (520) and a plurality of first cores (522) are each coupled to a plurality of stators (524), and a plurality of stators (524) are each coupled to a housing (not shown), and a plurality of first coils (520) and a plurality of first cores (522) can be fixed to the housing through the plurality of stators (524).

[0117] A plurality of first magnetic bodies (540) are each arranged to correspond to one side of a plurality of first coils (520) and a plurality of first cores (522) and are coupled to a magnetic body holder (not shown), the magnetic body holder is coupled to a central axis (580), and the plurality of first magnetic bodies (540), the magnetic body holder, and the central axis (580) can rotate with respect to the housing.

[0118] A plurality of first auxiliary magnets (560) are arranged to correspond to the opposite sides of a plurality of first coils (520) and a plurality of first cores (522), and are attached to the opposite sides of a plurality of first cores (522) such that their polarities have an attractive relationship with respect to a plurality of first coils (520), and can be fixed to a housing through a plurality of stators (524).

[0119] A plurality of first coils (520) may be arranged so that their polarities are the same or opposite (crossed), and a plurality of first auxiliary magnets (560) may be arranged so that their polarities are the same or opposite (crossed).

[0120] That is, if the polarity of the plurality of first auxiliary magnets (560) and the polarity of the plurality of first coils (520) have an attractive relationship with each other, the polarity of the plurality of first coils (520) may be the same or opposite to each other, and the polarity of the plurality of first auxiliary magnets (560) may be the same or opposite to each other.

[0121] For example, a plurality of first cores (522) and a plurality of first magnetic bodies (540) may each include a ferromagnetic material such as iron (Fe), nickel (Ni), and cobalt (Co).

[0122] The central axis (580) is rotatably coupled to a central axis holder (not shown), the central axis holder is coupled to a motor holder (not shown), and the motor holder is coupled to a housing.

[0123] In the fifth embodiment, a plurality of first coils (520), a plurality of first cores (522), and a plurality of first auxiliary magnets (560) are fixed and a plurality of first magnetic bodies (540) are rotated as an example, but in other embodiments, a plurality of first coils (520), a plurality of first cores (522), and a plurality of first auxiliary magnets (560) may rotate and a plurality of first magnetic bodies (540) may be fixed.

[0124] In this electric device (510), as illustrated in FIG. 11, during the time interval when a plurality of first magnetic bodies (540) approach a corresponding plurality of first coils (520) and a plurality of first cores (522), direct current is applied (on) to the plurality of first coils (520) to apply a magnetic force (Fon) to the plurality of first magnetic bodies (540) to which the plurality of first coils (520), the plurality of first cores (522), and the plurality of first auxiliary magnets (560) approach.

[0125] And, as illustrated in FIG. 12, during the time interval when a plurality of first magnetic bodies (540) move away from a plurality of first coils (520) and a plurality of first cores (522), the application of DC current to the plurality of first coils (520) is turned off, and an off magnetic force (Foff) is applied to the plurality of first magnetic bodies (540) from which the plurality of first coils (520), the plurality of first cores (522), and the plurality of first auxiliary magnets (560) are moving away.

[0126] Accordingly, the efficiency of the multiple first coils (520) of the electronic device (510) is improved.

[0127] In addition, since the polarity of the plurality of first auxiliary magnets (560) is arranged on the other side of the plurality of first cores (522) such that the polarity of the plurality of first auxiliary magnets (560) has an attractive relationship with the polarity of the plurality of first coils (520), the plurality of first auxiliary magnets (560) can be stably attached to the plurality of first cores (522).

[0128] FIGS. 13 and FIGS. 14 are cross-sectional views illustrating the on and off states of an electric device according to the 6th embodiment of the present invention, respectively, and are described with reference to FIGS. 1 and FIGS. 2, and descriptions of parts identical to those of the 1st to 5th embodiments are omitted.

[0129] As illustrated in FIGS. 13 and 14, the electric device (610) according to the sixth embodiment of the present invention is a radial flux type motor and includes a plurality of first coils (620) and a plurality of first cores (622), a plurality of second coils (626) and a plurality of second cores (628), a plurality of first magnetic bodies (640), a plurality of second magnetic bodies (644), and a plurality of first auxiliary magnets (660).

[0130] Specifically, a plurality of first cores (622) are arranged inside a plurality of first coils (620) having a winding axis perpendicular to the central axis (680) and facing the central axis (680), and a plurality of second cores (628) are arranged inside a plurality of second coils (626) having a winding axis perpendicular to the central axis (680) and facing the central axis (680), and a plurality of first coils (620), a plurality of first cores (622), a plurality of second coils (626), a plurality of second cores (628), a plurality of first magnetic bodies (640), a plurality of second magnetic bodies (644), and a plurality of first auxiliary magnets (660) are each arranged in a circular manner with respect to the central axis (680).

[0131] A plurality of first coils (620), a plurality of first cores (622), a plurality of second coils (626), and a plurality of second cores (628) are arranged to be spaced apart from each other along a radial direction perpendicular to a central axis (680), and a plurality of first auxiliary magnets (660) are arranged between the plurality of first coils (620), a plurality of first cores (622), a plurality of second coils (626), and a plurality of second cores (628).

[0132] A plurality of first coils (620), a plurality of first cores (622), a plurality of second coils (626), and a plurality of second cores (628) are each coupled to a plurality of stators (624), and a plurality of stators (624) are each coupled to a housing (not shown), and a plurality of first coils (620), a plurality of first cores (622), a plurality of second coils (626), and a plurality of second cores (628) can be fixed to the housing through the plurality of stators (624).

[0133] A plurality of first magnetic bodies (640) are each arranged to correspond to one side of a plurality of first coils (620) and a plurality of first cores (622) and are coupled to a magnetic body holder (not shown), and a plurality of second magnetic bodies (644) are each arranged to correspond to one side of a plurality of second coils (626) and a plurality of second cores (628) and are coupled to a magnetic body holder, and the magnetic body holder is coupled to a central axis (680), and the plurality of first magnetic bodies (640), the plurality of second magnetic bodies (644), the magnetic body holder, and the central axis (680) can rotate with respect to a housing.

[0134] A plurality of first auxiliary magnets (660) are arranged to correspond to the opposite sides of a plurality of first coils (620) and a plurality of first cores (622) and the opposite sides of a plurality of second coils (626) and a plurality of second cores (628), respectively, and are attached to the opposite sides of a plurality of first cores (622) and a plurality of second cores (628) such that their polarities have an attractive relationship with respect to a plurality of first coils (620) and a plurality of second coils (626), and can be fixed to a housing through a plurality of stators (624).

[0135] In the sixth embodiment, one first auxiliary magnet (660) is placed between the first and second coils (620, 626) as an example, but in other embodiments, two or more first auxiliary magnets (660) connected by an attractive relationship may be placed between the first and second coils (620, 626).

[0136] A plurality of first coils (620) may be arranged so that their polarities are the same or opposite (crossed), a plurality of second coils (626) may be arranged so that their polarities are the same or opposite (crossed), and a plurality of first auxiliary magnets (660) may be arranged so that their polarities are the same or opposite (crossed).

[0137] That is, if the polarity of a plurality of first auxiliary magnets (660) and the polarity of a plurality of first coils (620) have an attractive relationship with each other, and the polarity of a plurality of first auxiliary magnets (660) and the polarity of a plurality of second coils (626) have an attractive relationship with each other, then the polarity of a plurality of first coils (620) may be the same or opposite to each other, the polarity of a plurality of second coils (626) may be the same or opposite to each other, and the polarity of a plurality of first auxiliary magnets (660) may be the same or opposite to each other.

[0138] For example, a plurality of first cores (622), a plurality of second cores (628), and a plurality of first magnetic bodies (640) may each include a ferromagnetic material such as iron (Fe), nickel (Ni), and cobalt (Co).

[0139] The central axis (680) is rotatably coupled to a central axis holder (not shown), the central axis holder is coupled to a motor holder (not shown), and the motor holder is coupled to a housing.

[0140] In the sixth embodiment, a plurality of first coils (620), a plurality of first cores (622), a plurality of second coils (626), a plurality of second cores (628), and a plurality of first auxiliary magnets (660) are fixed and a plurality of first magnetic bodies (640) and a plurality of second magnetic bodies (644) are rotated as an example, but in other embodiments, a plurality of first coils (620), a plurality of first cores (622), a plurality of second coils (626), a plurality of second cores (628), and a plurality of first auxiliary magnets (660) are rotated and a plurality of first magnetic bodies (640) and a plurality of second magnetic bodies (644) may be fixed.

[0141] In this electric device (610), as illustrated in FIG. 13, in the time interval when a plurality of first magnetic bodies (640) and a plurality of second magnetic bodies (644) are approaching a plurality of first coils (620) and a plurality of first cores (622) and a plurality of second coils (626) and a plurality of second cores (628), a direct current is applied (on) to the plurality of first coils (620) and a plurality of second coils (626) to apply a magnetic force (Fon) to the plurality of first magnetic bodies (640) to which the plurality of first coils (620), a plurality of first cores (622), and a plurality of first auxiliary magnets (660) are approaching, and a magnetic force (Fon) is applied to the plurality of second magnetic bodies (644) to which the plurality of second coils (626), a plurality of second cores (628), and a plurality of first auxiliary magnets (660) are approaching.

[0142] And, as illustrated in FIG. 14, in the time interval when a plurality of first magnetic bodies (640) and a plurality of second magnetic bodies (644) are moving away from a plurality of first coils (620), a plurality of first cores (622), a plurality of second coils (626), and a plurality of second cores (628), the application of DC current to a plurality of first coils (620) and a plurality of second coils (626) is turned off, thereby applying an off magnetic force (Foff) to a plurality of first magnetic bodies (640) to which a plurality of first coils (620), a plurality of first cores (622), and a plurality of first auxiliary magnets (660) are moving away, and applying an off magnetic force (Foff) to a plurality of second magnetic bodies (644) to which a plurality of second coils (626), a plurality of second cores (628), and a plurality of first auxiliary magnets (660) are moving away.

[0143] Accordingly, the efficiency of the multiple first coils (620) and multiple second coils (626) of the electronic device (610) is improved.

[0144] And, a plurality of first auxiliary magnets (660) are arranged on the other side of a plurality of first cores (622) such that the polarity of a plurality of first auxiliary magnets (660) has an attractive relationship with the polarity of a plurality of first coils (620), and a plurality of first auxiliary magnets (660) are arranged on the other side of a plurality of second cores (628) such that the polarity of a plurality of first auxiliary magnets (660) has an attractive relationship with the polarity of a plurality of second coils (626), so that a plurality of first auxiliary magnets (660) can be stably attached to a plurality of first cores (622) and a plurality of second cores (628).

[0145] FIGS. 15 and FIGS. 16 are cross-sectional views illustrating the on and off states of an electric device according to the seventh embodiment of the present invention, respectively, and are described with reference to FIGS. 1 and FIGS. 2, and descriptions of parts identical to those of the first to sixth embodiments are omitted.

[0146] As illustrated in FIGS. 15 and 16, the electric device (710) according to the seventh embodiment of the present invention is a radial flux type motor and includes a plurality of first coils (720) and a plurality of first cores (722), a plurality of third coils (730) and a plurality of third cores (732), a plurality of first magnetic bodies (740), a plurality of first auxiliary magnets (760), and a plurality of second auxiliary magnets (762).

[0147] Specifically, a plurality of first cores (722) are arranged inside a plurality of first coils (720) having a winding axis perpendicular to the central axis (780) and facing the central axis (680), and a plurality of third cores (732) are arranged inside a plurality of third coils (730) having a winding axis perpendicular to the central axis (780) and facing the central axis (780), and a plurality of first coils (720), a plurality of first cores (722), a plurality of third coils (730), a plurality of third cores (732), a plurality of first magnetic bodies (740), a plurality of first auxiliary magnets (760), and a plurality of second auxiliary magnets (762) are each arranged in a circular manner with respect to the central axis (780).

[0148] A plurality of first coils (720) and a plurality of first cores (722) and a plurality of third coils (730) and a plurality of third cores (732) are arranged to be spaced apart from each other along a radial direction perpendicular to the central axis (780), and a plurality of first magnetic bodies (740) are arranged between the plurality of first coils (720) and a plurality of first cores (722) and the plurality of third coils (730) and a plurality of third cores (732).

[0149] A plurality of first coils (720), a plurality of first cores (722), a plurality of third coils (730), and a plurality of third cores (732) are each coupled to a plurality of stators (724), and a plurality of stators (724) are each coupled to a housing (not shown), and a plurality of first coils (720), a plurality of first cores (722), a plurality of third coils (730), and a plurality of third cores (732) can be fixed to the housing through the plurality of stators (724).

[0150] A plurality of first magnetic bodies (740) are each arranged to correspond to one side of a plurality of first coils (720) and a plurality of first cores (722) and one side of a plurality of third coils (730) and a plurality of third cores (732), and are coupled to a magnetic body holder (not shown), and the magnetic body holder is coupled to a central axis (780), and the plurality of first magnetic bodies (740), the magnetic body holder, and the central axis (780) can rotate with respect to the housing.

[0151] A plurality of first auxiliary magnets (760) are arranged to correspond to the opposite sides of a plurality of first coils (720) and a plurality of first cores (722), and are attached to the opposite sides of a plurality of first cores (722) such that their polarities have an attractive relationship with respect to a plurality of first coils (720), and can be fixed to a housing through a plurality of stators (724).

[0152] A plurality of second auxiliary magnets (762) are arranged to correspond to the opposite sides of a plurality of third coils (730) and a plurality of third cores (732), and are attached to the opposite sides of a plurality of third cores (732) such that their polarities have an attractive relationship with respect to a plurality of third coils (730), and can be fixed to a housing through a plurality of stators (724).

[0153] A plurality of first coils (720) may be arranged so that their polarities are the same or opposite (crossed), a plurality of third coils (730) may be arranged so that their polarities are the same or opposite (crossed), and a plurality of first auxiliary magnets (760) may be arranged so that their polarities are the same or opposite (crossed).

[0154] That is, if the polarity of a plurality of first auxiliary magnets (760) and the polarity of a plurality of first coils (720) have an attractive relationship with each other, and the polarity of a plurality of second auxiliary magnets (762) and the polarity of a plurality of third coils (730) have an attractive relationship with each other, then the polarity of a plurality of first coils (720) may be the same or opposite to each other, the polarity of a plurality of third coils (730) may be the same or opposite to each other, the polarity of a plurality of first auxiliary magnets (760) may be the same or opposite to each other, and the polarity of a plurality of second auxiliary magnets (762) may be the same or opposite to each other.

[0155] A plurality of first coils (720) and a plurality of third coils (730) may be arranged so that when DC is applied (on), the polarities of the opposing electromagnets are in a repulsive or attractive relationship with each other, and a plurality of first auxiliary magnets (760) and a plurality of second auxiliary magnets (762) may be arranged so that the polarities of the opposing magnets are in a repulsive or attractive relationship with each other.

[0156] Here, when the opposing polarities of the electromagnets of the multiple first coils (720) and the electromagnets of the multiple third coils (730) are arranged in a repulsive relationship with each other by applying direct current (on), and the opposing polarities of the multiple first auxiliary magnets (760) and the multiple second auxiliary magnets (762) are arranged in a repulsive relationship with each other, the efficiency can be further improved.

[0157] For example, a plurality of first cores (722), a plurality of third cores (732), and a plurality of first magnetic bodies (740) may each include a ferromagnetic material such as iron (Fe), nickel (Ni), and cobalt (Co).

[0158] The central axis (780) is rotatably coupled to a central axis holder (not shown), the central axis holder is coupled to a motor holder (not shown), and the motor holder is coupled to a housing.

[0159] In the seventh embodiment, a plurality of first coils (720), a plurality of first cores (722), a plurality of third coils (730), a plurality of third cores (732), a plurality of first auxiliary magnets (760) and a plurality of second auxiliary magnets (762) are fixed and a plurality of first magnetic bodies (740) are rotated as an example, but in other embodiments, a plurality of first coils (720), a plurality of first cores (722), a plurality of third coils (730), a plurality of third cores (732), a plurality of first auxiliary magnets (760) and a plurality of second auxiliary magnets (762) may rotate and a plurality of first magnetic bodies (740) may be fixed.

[0160] In this electric device (710), as illustrated in FIG. 15, during the time interval when a plurality of first magnetic bodies (740) approach a plurality of first coils (720) and a plurality of first cores (722) and a plurality of third coils (730) and a plurality of third cores (732), direct current is applied (on) to the plurality of first coils (720) and a plurality of third coils (730) to apply a magnetic force (Fon) to the plurality of first magnetic bodies (740) to which the plurality of first coils (720), a plurality of first cores (722) and a plurality of first auxiliary magnets (760) and a plurality of third coils (730), a plurality of third cores (732) and a plurality of second auxiliary magnets (762) approach.

[0161] And, as illustrated in FIG. 16, during the time interval when a plurality of first magnetic bodies (740) move away from a plurality of first coils (720) and a plurality of first cores (722) and a plurality of third coils (730) and a plurality of third cores (732), the DC power application to the plurality of first coils (720) and a plurality of third coils (730) is turned off, thereby applying an off magnetic force (Foff) to the plurality of first magnetic bodies (740) from which the plurality of first coils (720), a plurality of first cores (722), a plurality of first auxiliary magnets (760), a plurality of third coils (730), a plurality of third cores (732), and a plurality of second auxiliary magnets (762) are moving away.

[0162] Accordingly, the efficiency of the multiple first coils (720) and multiple third coils (732) of the electronic device (710) is improved.

[0163] And, a plurality of first auxiliary magnets (760) are arranged on the opposite side of a plurality of first cores (722) such that the polarity of a plurality of first auxiliary magnets (760) has an attractive relationship with the polarity of a plurality of first coils (720), and a plurality of second auxiliary magnets (762) are arranged on the opposite side of a plurality of third cores (732) such that the polarity of a plurality of second auxiliary magnets (762) has an attractive relationship with the polarity of a plurality of third coils (730), so that a plurality of first auxiliary magnets (760) can be stably attached to a plurality of first cores (722) and a plurality of second auxiliary magnets (762) can be stably attached to a plurality of third cores (732).

[0164] FIGS. 17 and FIGS. 18 are cross-sectional and longitudinal sections illustrating the on and off states of an electric device according to the eighth embodiment of the present invention, respectively, and are described with reference to FIGS. 1 and FIGS. 2, and descriptions of parts identical to those of the first to seventh embodiments are omitted.

[0165] As illustrated in FIGS. 17 and 18, the electric device (810) according to the eighth embodiment of the present invention comprises a plurality of first coils (820) and a plurality of first cores (822), a first magnetic body (840), and a plurality of first auxiliary magnets (860) as a solenoid.

[0166] Specifically, a plurality of first cores (822) are each disposed within a plurality of first coils (820) having a winding axis perpendicular to the central axis of the cylinder (890) and directed toward the central axis of the cylinder (890), and the plurality of first coils (820), the plurality of first cores (822), and the plurality of first auxiliary magnets (860) are each disposed radially around the cylinder (890) with respect to the central axis of the cylinder (890).

[0167] In the eighth embodiment, four first coils (820) and four first cores (822) are arranged around the cylinder (890) as an example, but in other embodiments, two, three, or five or more first coils (820) and two, three, or five or more first cores (822) may be arranged around the cylinder (890).

[0168] A plurality of first coils (820) and a plurality of first cores (822) are each coupled to a plurality of stators (824), and a plurality of stators (824) are each coupled to a cylinder (890), and a plurality of first coils (820) and a plurality of first cores (822) can be fixed to the cylinder (890) through the plurality of stators (824).

[0169] The first magnetic body (840) is placed inside a cylinder (890) to correspond to one side of a plurality of first coils (820) and a plurality of first cores (822) and is coupled to a magnetic body holder (not shown), and the first magnetic body (740) and the magnetic body holder can move linearly with respect to the cylinder (890).

[0170] One side of the first magnetic body (840) is connected to a spring (892) disposed inside the cylinder (890), and the spring (892) is connected to a support plate (894) disposed inside the cylinder (890).

[0171] A plurality of first auxiliary magnets (860) are each disposed outside the cylinder (890) to correspond to the opposite sides of a plurality of first coils (820) and a plurality of first cores (822), and are attached to the opposite sides of a plurality of first cores (822) such that their polarities have an attractive relationship with respect to a plurality of first coils (820), and can be fixed to the cylinder (890) through a plurality of stators (824).

[0172] A plurality of first coils (820) may be arranged so that their polarities are the same or opposite (crossed), and a plurality of first auxiliary magnets (860) may be arranged so that their polarities are the same or opposite (crossed).

[0173] That is, if the polarity of the plurality of first auxiliary magnets (860) and the polarity of the plurality of first coils (820) have an attractive relationship with each other, the polarity of the plurality of first coils (820) may be the same or opposite to each other, and the polarity of the plurality of first auxiliary magnets (860) may be the same or opposite to each other.

[0174] Two of the first coils (820) facing each other are arranged so that when DC is applied (on), the polarities of the opposing electromagnets are in a repulsive or attractive relationship with each other, and two of the first auxiliary magnets (760) facing each other can be arranged so that the polarities of the opposing ones are in a repulsive or attractive relationship with each other.

[0175] Here, when the opposing polarities of two electromagnets facing each other among the multiple first coils (820) are arranged in a repulsive relationship with each other and the opposing polarities of multiple first auxiliary magnets (860) are arranged in a repulsive relationship with each other, the efficiency can be further improved.

[0176] For example, a plurality of first cores (822) and first magnetic bodies (840) may each include a ferromagnetic material such as iron (Fe), nickel (Ni), and cobalt (Co).

[0177] In this electric device (810), as illustrated in FIG. 17, in the first time interval, direct current is applied (on) to a plurality of first coils (820) so that a plurality of first coils (820), a plurality of first cores (822), and a plurality of first auxiliary magnets (860) apply an on magnetic force (Fon) greater than the contraction force of the spring (892) to the first magnetic body (840), causing the spring (892) to expand and the first magnetic body (840) to move to a first position corresponding to the plurality of first coils (820) and the plurality of first cores (822).

[0178] And, as illustrated in FIG. 18, in the second time interval, the DC power applied to the plurality of first coils (820) is turned off, and the plurality of first coils (820), the plurality of first cores (822), and the plurality of first auxiliary magnets (860) apply an off magnetic force (Foff) to the first magnetic body (840) that is smaller than the contraction force of the spring (892), so that the spring (892) contracts and the first magnetic body (840) moves to a second position away from the plurality of first coils (820) and the plurality of first cores (822).

[0179] Accordingly, the efficiency of the multiple first coils (820) of the electronic device (810) is improved.

[0180] In addition, since the polarity of the plurality of first auxiliary magnets (860) is arranged on the other side of the plurality of first cores (822) such that the polarity of the plurality of first auxiliary magnets (860) has an attractive relationship with the polarity of the plurality of first coils (820), the plurality of first auxiliary magnets (860) can be stably attached to the plurality of first cores (822).

[0181] FIGS. 19 and FIGS. 20 are cross-sectional views illustrating the on and off states of an electric device according to the ninth embodiment of the present invention, respectively, and are described with reference to FIGS. 1 and FIGS. 2, and descriptions of parts identical to those of the first to eighth embodiments are omitted.

[0182] As illustrated in FIGS. 19 and 20, the electric device (910) according to the ninth embodiment of the present invention is a linear type motor and includes a first coil (920) and a first core (922), a second coil (926) and a second core (928), a third coil (930) and a third core (932), a fourth coil (934) and a fourth core (936), a first magnetic body (940), a second magnetic body (942), a first auxiliary magnet (960), a second auxiliary magnet (962), a third auxiliary magnet (964), and a fourth auxiliary magnet (966).

[0183] Specifically, first to fourth cores (922, 928, 932, 936) are disposed respectively inside first to fourth coils (920, 926, 930, 934) having a winding axis facing a central axis (not shown) and first and second magnetic bodies (940, 942) coupled to the central axis, and the first and second coils (920, 926) are spaced apart from each other along the direction in which the first and second magnetic bodies (940, 942) move, and the third and fourth coils (930, 934) are spaced apart from each other along the direction in which the first and second magnetic bodies (940, 942) move, and the first and third coils (920, 930) are spaced apart and facing each other with the first and second magnetic bodies (940, 942) in between, and the second and The fourth coil (926, 934) is spaced apart from each other with the first and second magnetic bodies (940, 942) in between.

[0184] The first coil (920) and the first core (922), the second coil (926) and the second core (928), the third coil (930) and the third core (932), the fourth coil (934) and the fourth core (936) are each coupled to a plurality of stators (924), and the plurality of stators (924) are each coupled to a housing (not shown), and the first coil (920) and the first core (922), the second coil (926) and the second core (928), the third coil (930) and the third core (932), the fourth coil (934) and the fourth core (936) can be fixed to the housing through the plurality of stators (924).

[0185] The first and second magnetic bodies (940, 942) are each arranged to correspond to one side of the first coil (920) and the first core (922), one side of the second coil (926) and the second core (928), one side of the third coil (930) and the third core (932), and one side of the fourth coil (934) and the fourth core (936), and are coupled to a magnetic body holder (not shown), and the magnetic body holder is coupled so as to be linearly movable about a central axis (not shown), and the first and second magnetic bodies (940, 942) and the magnetic body holder can be linearly moved about the housing.

[0186] The first auxiliary magnet (960) is positioned to correspond to the other side of the first coil (920) and the first core (922), is attached to the other side of the first core (922) so that its polarity has an attractive relationship with respect to the first coil (920), and can be fixed to the housing through a plurality of stators (924).

[0187] The second auxiliary magnet (962) is positioned to correspond to the other side of the second coil (926) and the second core (928), is attached to the other side of the second core (928) so that its polarity has an attractive relationship with respect to the second coil (926), and can be fixed to the housing through a plurality of stators (924).

[0188] The third auxiliary magnet (930) is positioned to correspond to the other side of the third coil (930) and the third core (932), is attached to the other side of the third core (932) so that its polarity has an attractive relationship with respect to the third coil (930), and can be fixed to the housing through a plurality of stators (924).

[0189] The fourth auxiliary magnet (966) is positioned to correspond to the other side of the fourth coil (934) and the fourth core (936), is attached to the other side of the fourth core (936) so that its polarity has an attractive relationship with respect to the fourth coil (934), and can be fixed to the housing through a plurality of stators (924).

[0190] The first and second coils (920, 926) may be arranged so that their polarities are the same or opposite (crossed), the third and fourth coils (930, 934) may be arranged so that their polarities are the same or opposite (crossed), the first and second auxiliary magnets (960, 962) may be arranged so that their polarities are the same or opposite (crossed), and the third and fourth auxiliary magnets (964, 966) may be arranged so that their polarities are the same or opposite (crossed).

[0191] That is, if the polarity of the first auxiliary magnet (960) and the polarity of the first coil (920) have an attractive relationship with each other, the polarity of the second auxiliary magnet (962) and the polarity of the second coil (926) have an attractive relationship with each other, the polarity of the third auxiliary magnet (964) and the polarity of the third coil (930) have an attractive relationship with each other, and the polarity of the fourth auxiliary magnet (966) and the polarity of the fourth coil (934) have an attractive relationship with each other, then the polarities of the first and second coils (920, 926) may be the same or opposite to each other, the polarities of the third and fourth coils (930, 934) may be the same or opposite to each other, the polarities of the first and second auxiliary magnets (960, 962) may be the same or opposite to each other, and the polarities of the third and fourth auxiliary magnets (964, 966) may be the same or opposite to each other. there is.

[0192] A plurality of first coils (920) and a plurality of third coils (930) may be arranged so that when DC is applied (on), the polarities of the opposing electromagnets are in a repulsive or attractive relationship with each other, a plurality of first auxiliary magnets (960) and a plurality of third auxiliary magnets (964) may be arranged so that the polarities of the opposing electromagnets are in a repulsive or attractive relationship with each other, a plurality of second coils (926) and a plurality of fourth coils (934) may be arranged so that when DC is applied (on), the polarities of the opposing electromagnets are in a repulsive or attractive relationship with each other, and a plurality of second auxiliary magnets (962) and a plurality of fourth auxiliary magnets (966) may be arranged so that the polarities of the opposing electromagnets are in a repulsive or attractive relationship with each other.

[0193] Here, when the opposing polarities of the electromagnets of the multiple first coils (920) and the electromagnets of the multiple third coils (930) are arranged in a repulsive relationship with each other by applying DC current (on), the opposing polarities of the multiple first auxiliary magnets (960) and the multiple third auxiliary magnets (964) are arranged in a repulsive relationship with each other, the opposing polarities of the electromagnets of the multiple second coils (926) and the electromagnets of the multiple fourth coils (934) are arranged in a repulsive relationship with each other by applying DC current (on), and the opposing polarities of the multiple second auxiliary magnets (962) and the multiple fourth auxiliary magnets (966) are arranged in a repulsive relationship with each other, the efficiency can be further improved.

[0194] For example, the first to fourth cores (922, 928, 932, 936) and the first and second magnetic bodies (940, 942) may each include a ferromagnetic material such as iron (Fe), nickel (Ni), and cobalt (Co).

[0195] In the ninth embodiment, the first coil (920) and first core (922), the second coil (926) and second core (928), the third coil (930) and third core (932), the fourth coil (934) and fourth core (936), and the first to fourth auxiliary magnets (960, 962, 964, 966) are fixed and a plurality of first and second magnetic bodies (940, 942) move linearly, but in other embodiments, the first coil (920) and first core (922), the second coil (926) and second core (928), the third coil (930) and third core (932), the fourth coil (934) and fourth core (936), and the first to fourth auxiliary magnets (960, 962, 964, 966) may move linearly and the first and second magnetic bodies (940, 942) may be fixed.

[0196] In the ninth embodiment, the first and second coils (920, 926) are positioned above the central axis, the third and fourth coils (930, 934) are positioned below the central axis, and the first and second magnetic bodies (940, 942) are coupled to the central axis. However, in other embodiments, three or more upper coils may be positioned above the central axis, three or more lower coils may be positioned below the central axis, and three or more magnetic bodies may be coupled to the central axis.

[0197] In this electric device (910), as illustrated in FIG. 19, during the time interval when the second magnetic body (942) approaches the second coil (926) and the second core (928) and the fourth coil (934) and the fourth core (936), direct current is applied (on) to the second coil (926) and the fourth coil (934) to apply a magnetic force (Fon) to the second magnetic body (942) to which the second coil (926), the second core (928), the second auxiliary magnet (962), the fourth coil (934), the fourth core (936), and the fourth auxiliary magnet (966) are approaching, and the application of direct current to the first coil (920) and the third coil (930) is cut off (off) so that the first coil (920), the first core (922), and The first auxiliary magnet (960), the third coil (930), the third core (932), and the third auxiliary magnet (964) apply an off magnetic force (Foff) to the first magnetic body (940) located far away.

[0198] And, as illustrated in FIG. 20, during the time interval when the first magnetic body (940) approaches the corresponding first coil (920), first core (922), third coil (930), and third core (932), and the second magnetic body (942) moves away from the second coil (926), second core (928), fourth coil (934), and fourth core (936), direct current is applied (on) to the first coil (920) and the third coil (930) to apply a magnetic force (Fon) to the first magnetic body (940) to which the first coil (920), first core (922), first auxiliary magnet (960), third coil (930), third core (932), and third auxiliary magnet (964) are approaching. By turning off the DC power applied to the third coil (926) and the fourth coil (934), an off magnetic force (Foff) is applied to the second magnetic body (942) from which the second coil (926), the second core (928), and the second auxiliary magnet (962) and the fourth coil (934), the fourth core (936), and the fourth auxiliary magnet (966) are separated.

[0199] Accordingly, the efficiency of the first to fourth coils (920, 926, 930, 934) of the electronic device (910) is improved.

[0200] In addition, since the first to fourth auxiliary magnets (960, 962, 964, 966) are arranged on the other side of the first to fourth cores (922, 928, 932, 936) such that the polarities of the first to fourth auxiliary magnets (960, 962, 964, 966) have an attractive relationship with respect to the polarities of the first to fourth coils (920, 926, 930, 934), the first to fourth auxiliary magnets (960, 962, 964, 966) can be stably attached to the first to fourth cores (922, 928, 932, 936).

[0201] As described above, in an electric device including a coil and an auxiliary magnet according to an embodiment of the present invention, by arranging an auxiliary magnet, which is a permanent magnet, on one surface of a core inside a coil constituting an electromagnet, the on magnetic force on the magnetic material is increased when current is applied to the coil, and the off magnetic force on the magnetic material is decreased when current is cut off to the coil, thereby improving the efficiency of the coil.

[0202] In addition, by applying direct current to the coil and arranging an auxiliary magnet in an attractive relationship on one side of the core inside the coil, the auxiliary magnet can be stably attached to the core while improving the electromagnet function of the coil through the auxiliary magnet.

[0203] In the first to ninth embodiments, the electric device was exemplified as an electric motor, solenoid, or linear motor, but the efficiency can be improved by applying an auxiliary magnet to various electric devices including electromagnets of coils and cores.

[0204] Although the present invention has been described above with reference to preferred embodiments, those skilled in the art will understand that various modifications and changes can be made to the invention without departing from the technical spirit and scope of the invention as described in the following claims. Explanation of the symbols

[0205] 110: Electrical device 120: First coil 122: 1st Core 124: Stator 140: First magnetic material 160: First auxiliary magnet

Claims

Claim 1 An electric device comprising: a plurality of first coils arranged in a circular shape with respect to a central axis; a plurality of first cores each disposed inside the plurality of first coils; a plurality of first magnetic bodies each disposed to correspond to one surface of the plurality of first coils and the plurality of first cores; and a plurality of first auxiliary magnets each disposed to correspond to the other surface of the plurality of first coils and the plurality of first cores, wherein the plurality of first auxiliary magnets are each attached to the other surface of the plurality of first cores to have a polarity in an attractive relationship with respect to the plurality of first coils. Claim 2 delete Claim 3 An electric device according to claim 1, further comprising: a plurality of second coils arranged in a circular manner with respect to the central axis and spaced apart from the plurality of first coils along a direction parallel to the central axis; a plurality of second cores each disposed inside the plurality of second coils; and a plurality of second magnetic bodies each disposed to correspond to one surface of the plurality of second coils and the plurality of second cores, wherein the plurality of first auxiliary magnets are each attached to the other surface of the plurality of first cores and the other surface of the second cores so as to have polarity in an attractive relationship with respect to the plurality of first coils and the plurality of second coils. Claim 4 An electric device according to claim 1, further comprising: a plurality of third coils arranged in a circular manner with respect to the central axis and spaced apart from the plurality of first coils along a direction parallel to the central axis; a plurality of third cores each disposed inside the plurality of third coils; and a plurality of second auxiliary magnets each disposed to correspond to the opposite surfaces of the plurality of third coils and the plurality of third cores, wherein the plurality of first magnetic bodies are each disposed to correspond to one surface of the plurality of third coils and the plurality of third cores, and the plurality of second auxiliary magnets are each attached to the opposite surfaces of the plurality of third cores to have polarity in an attractive relationship with respect to the plurality of third coils. Claim 5 An electric device according to claim 4, wherein the plurality of first coils and the plurality of third coils are arranged to have polarities in a repulsive relationship with each other. Claim 6 In claim 1, a plurality of second coils arranged circularly with respect to the central axis and spaced apart from the plurality of first coils along a direction parallel to the central axis; a plurality of second cores each disposed inside the plurality of second coils; a plurality of third coils arranged circularly with respect to the central axis and spaced apart from the plurality of first coils along a direction parallel to the central axis; a plurality of third cores each disposed inside the plurality of third coils; a plurality of fourth coils arranged circularly with respect to the central axis and spaced apart from the plurality of third coils along a direction parallel to the central axis; a plurality of fourth cores each disposed inside the plurality of fourth coils; a plurality of second magnetic bodies each disposed to correspond to one surface of the plurality of second coils and the plurality of second cores; a plurality of third magnetic bodies each disposed to correspond to one surface of the plurality of fourth coils and the plurality of fourth cores; and the other surface of the plurality of third coils and the plurality of third cores and the plurality of fourth coils The electric device further comprises a plurality of second auxiliary magnets each arranged to correspond to the opposite side of the plurality of fourth cores, wherein the plurality of first magnetic bodies are each arranged to correspond to one side of the plurality of third coils and the plurality of third cores, and the plurality of first auxiliary magnets are each attached to the opposite side of the plurality of first cores and the opposite side of the plurality of second cores to have polarity in an attractive relationship with respect to the plurality of first coils and the plurality of second coils, and the plurality of second auxiliary magnets are each attached to the opposite side of the plurality of third cores and the opposite side of the plurality of fourth cores to have polarity in an attractive relationship with respect to the plurality of third coils and the plurality of fourth coils. Claim 7 An electric device according to claim 6, wherein the plurality of first coils and the plurality of third coils are arranged to have polarities in a repulsive relationship with each other. Claim 8 In claim 1, the winding axis of the plurality of first coils is parallel to the central axis or perpendicular to the central axis of the electrical device. Claim 9 An electric device comprising: a plurality of first coils arranged in a circular pattern around a cylinder with respect to a central axis; a plurality of first cores each arranged inside the plurality of first coils; a first magnetic body arranged to correspond to one side of the plurality of first coils and the plurality of first cores; and a plurality of first auxiliary magnets each arranged to correspond to the other side of the plurality of first coils and the plurality of first cores. Claim 10 An electric device according to claim 9, wherein each of the plurality of first auxiliary magnets is attached to the other side of the plurality of first cores such that they each have a polarity of an attractive relationship with respect to the plurality of first coils. Claim 11 An electric device according to claim 9, wherein two of the plurality of first coils facing each other are arranged to have polarities in a repulsive relationship. Claim 12 An electric device comprising: a plurality of upper coils spaced apart from each other on the upper part of a central axis; a plurality of lower coils spaced apart from each other on the lower part of a central axis; a plurality of upper cores and a plurality of lower cores respectively disposed inside the plurality of upper coils and the plurality of lower coils; a plurality of magnetic bodies respectively disposed to correspond to one side of the plurality of upper coils and the plurality of upper cores and one side of the plurality of lower coils and the plurality of lower cores; a plurality of upper auxiliary magnets respectively disposed to correspond to the other side of the plurality of upper coils and the plurality of upper cores; and a plurality of lower auxiliary magnets respectively disposed to correspond to the other side of the plurality of lower coils and the plurality of lower cores. Claim 13 An electric device according to claim 12, wherein the plurality of upper auxiliary magnets are each attached to the opposite side of the plurality of upper cores to have a polarity in an attractive relationship with respect to the plurality of upper coils, and the plurality of lower auxiliary magnets are each attached to the opposite side of the plurality of lower cores to have a polarity in an attractive relationship with respect to the plurality of lower coils. Claim 14 An electric device according to claim 12, wherein the plurality of upper coils and the plurality of lower coils are arranged to have polarities that are repulsive to each other. Claim 15 In claim 1, the plurality of first coils and the plurality of first auxiliary magnets are an electric device that rotates relative to the plurality of first magnetic bodies.

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