JP5803074B2 - Non-contact power feeding device - Google Patents

Description

  The present invention relates to a non-contact power feeding device that uses an electromagnetic induction phenomenon to supply power from a primary side to a secondary side.

  2. Description of the Related Art In recent years, non-contact power supply apparatuses in which a metal terminal portion for power supply or the like is not exposed are used in various applications such as consumer use, automobile use, medical use, and RFID products (for example, non-contact IC cards). Such a non-contact power feeding device has an advantage that a waterproof function and a short-circuit preventing function can be easily provided as compared with a contact type power feeding method using a conventional outlet or a metal terminal. As a typical example of the non-contact power feeding device, an electromagnetic induction type, a radio wave reception type, and a resonance type are known, but the electromagnetic induction type is the mainstream as a practical example.

  A non-contact power feeding apparatus according to such a conventional example will be described with reference to FIG. FIG. 10 is a schematic cross-sectional view of main components of a contactless power feeding device according to a conventional example. As shown in the figure, a primary coil 520 is provided in a housing (referred to as a primary housing 510) in the primary side (power supply side) device 500. Further, a secondary coil 620 is provided in a housing (referred to as a secondary housing 610) in the secondary side (power receiving side) device 600.

  In such a non-contact power feeding device, the primary side coil 520 is provided in the primary side casing 510, and the secondary side coil 620 is provided in the secondary side casing 610. It is advantageous in terms of a waterproof function and a short-circuit preventing function compared to the mold type. On the other hand, since the primary side case 510 and the secondary side case 610 are interposed between the primary side coil 520 and the secondary side coil 620, there is a disadvantage that the power supply efficiency is low.

  In order to increase the power supply efficiency, it may be considered that a core (magnetic core) is provided in each of the primary side coil and the secondary side coil, and power is supplied by bringing these cores into contact with each other. However, in this case, since the core must be exposed to the outside of the housing, there is a concern that the waterproof function and the short-circuit prevention function, which are the advantages of the non-contact power feeding device, are impaired. Further, in the case of a large apparatus such as an automobile, when the cores are brought into contact with each other, the impact of the cores is likely to increase, and therefore it is necessary to take measures against damage.

Japanese Patent Laid-Open No. 11-273777 JP 2000-269059 A JP 2003-299255 A JP 2007-130033 A JP 2007-143116 A JP 2008-87733 A

  The objective of this invention is providing the non-contact electric power feeder which aimed at the improvement of the supply efficiency of electric power.

  The present invention employs the following means in order to solve the above problems.

That is, in the non-contact power feeding device of the present invention,
A primary coil;
A primary core arranged to pass through the central axis of the primary coil;
A primary housing that supports the primary coil and the primary core;
A secondary coil;
A secondary core arranged to pass through the central axis of the secondary coil;
A secondary housing supporting the secondary coil and the secondary core;
With
A non-contact power feeding device that supplies power from the primary side to the secondary side in a state where the primary side core and the secondary side core are in contact with each other,
The primary core is made of a soft magnetic material made of rubber in which a soft magnetic material is dispersed, a soft magnetic material made of resin in which a soft magnetic material is dispersed, or a mixed material of rubber and resin in which a soft magnetic material is dispersed. together are constituted by a soft magnetic material, even in contact in a state the plane of the contact side of the contact-side surface and the secondary side core of the primary side core are not parallel, the deformation of the primary side core, the primary core and the secondary The secondary core is configured to be able to contact the surface .

  According to the present invention, the primary side core is made of a soft magnetic material made of rubber, resin, etc., so that the primary side core and the secondary side core have the core original function of concentrating magnetic flux. The impact when contacted can be buffered. In addition, since power is supplied in a state where the primary side core and the secondary side core are in contact with each other, it is possible to improve power supply efficiency. In addition, even if the primary side core and the secondary side core are in contact with each other with a slight shift, the power can be stably supplied because the cores are on both sides. Further, even when the contact side surface of the primary side core and the contact side surface of the secondary side core are in contact with each other, the primary side core can be deformed to bring them into surface contact. Thereby, electric power can be stably supplied.

Where the primary core is
A core body,
It is good to have a diaphragm part which supports this core body part so that movement in the contact and separation direction of a primary side core and a secondary side core is possible.

  Thereby, when the primary side core and the secondary side core contact (collision), the core body part of the primary side core moves (vibrates) in the contact / separation direction of the primary side core and the secondary side core. The shock can be further buffered. Moreover, even if the contact side surface of the primary side core and the contact side surface of the secondary side core are in contact with each other in a greatly inclined state, in addition to the deformation of the primary side core, the diaphragm portion is deformed, Surface contact can be made.

The primary core is
A core body,
It is good to have the bellows part which supports this core main-body part so that a movement in the contact / separation direction of a primary side core and a secondary side core is possible.

  Even when such a configuration is adopted, when the primary side core and the secondary side core come into contact (collision), the core body portion of the primary side core is in the contact / separation direction between the primary side core and the secondary side core. Since it moves (vibrates), the shock can be further buffered. Even if the contact side surface of the primary side core and the contact side surface of the secondary side core are in contact with each other in a greatly inclined state, in addition to the deformation of the primary side core, the bellows part is deformed, Surface contact can be made.

Moreover, the non-contact power feeding device of the present invention is
A primary housing;
A primary coil provided in the primary housing;
A primary core having a protruding portion that passes through the primary side coil and protrudes toward the inside of the through hole provided in the primary side housing;
A secondary housing,
A secondary coil provided in the secondary housing;
A secondary side core having a protruding portion that passes through the secondary side coil and protrudes toward the inside of the through hole provided in the secondary side housing;
With
A non-contact power feeding device that supplies power from the primary side to the secondary side in a state where the primary side core and the secondary side core are in contact with each other,
The primary core is made of a soft magnetic material made of rubber in which a soft magnetic material is dispersed, a soft magnetic material made of resin in which a soft magnetic material is dispersed, or a mixed material of rubber and resin in which a soft magnetic material is dispersed. The primary side core is configured by a soft magnetic body and includes a seal portion that blocks a path from the outside of the primary side casing to the inside of the primary side casing through a through hole provided in the primary side casing. Even if the contact side surface of the secondary side and the contact side surface of the secondary side core are in contact with each other in a non-parallel state, the primary side core and the secondary side core can be brought into surface contact by deformation of the primary side core. It is characterized by that.

According to the present invention, since the power supply in state form is brought into contact with the primary side core and the secondary side core, it is possible to improve the power supply efficiency. In addition, even if the primary side core and the secondary side core are in contact with each other with a slight shift, the power can be stably supplied because the cores are on both sides. Further, although the primary core is made of rubber or resin or a mixed material of rubber and resin, it is a soft magnetic material in which a soft magnetic material is dispersed, so that a predetermined magnetic permeability can be obtained. According to the present invention, the primary side core is made of rubber or resin or a mixed material of rubber and resin, and the primary side via the through hole provided in the primary side case from the outside of the primary side case. Since the seal portion that blocks the path leading to the inside of the housing is provided, it is possible to suppress intrusion of fluid and foreign matter from the outside of the housing to the inside. Furthermore, in the present invention, since the primary side core is made of a soft magnetic material made of rubber, resin, etc., the primary side core and the secondary side core are exhibited while exhibiting the original function of concentrating magnetic flux. It is possible to buffer the impact when the touches. Further, even when the contact side surface of the primary side core and the contact side surface of the secondary side core are in contact with each other, the primary side core can be deformed to bring them into surface contact. Thereby, electric power can be stably supplied.

  The primary core may be provided with a cover portion that covers a surface (back surface) opposite to the surface facing the inner surface of the primary housing in the primary coil.

  Thereby, the magnetic flux from the back surface in the primary coil can be directed to the primary core side, and the magnetic flux density penetrating the primary coil can be increased. Therefore, the power supply efficiency can be further increased.

  Alternatively, it is also preferable that a cover member made of a soft magnetic material is provided to cover a surface on the opposite side of the surface facing the inner surface of the primary side casing in the primary side coil.

  Even in this case, the magnetic flux from the back surface of the primary coil can be directed to the primary core, and the magnetic flux density penetrating the primary coil can be increased. Therefore, the power supply efficiency can be further increased. It should be noted that the magnetic permeability of the cover member can be changed to the magnetic permeability of the primary core by changing the composition of the material and material of the cover member to that of the primary core. In this case, it is possible to concentrate the magnetic flux to the primary side core by setting the permeability of the cover member to be equal to or less than the permeability of the primary side core. Note that the direction of the magnetic flux can be determined by the shape of the cover member, and the magnetic flux can be concentrated on the primary side core also by the shape.

Here, the seal portion may adopt various shapes depending on the configuration of the device to which the non-contact power feeding device is applied, such as a grommet or a gasket shape. When the seal portion is configured by a convex portion that is in close contact with the inner surface of the primary side casing, the seal portion configured by the convex portion is pressed against the inner surface of the primary side casing. Sex is demonstrated.

  Therefore, the cover member is made of a material having higher rigidity than the primary side core, and is positioned in the primary side casing in a state where the primary side core is pressed toward the inner surface of the primary side casing. It is good to have.

  Thereby, the contact | adhesion power to the inner surface of the primary side housing | casing in a convex part can be improved uniformly, and a sealing performance can be improved.

Moreover, the non-contact power feeding device of the present invention is
A primary coil;
A primary core disposed inside the primary coil;
A primary housing that supports the primary coil and the primary core;
A secondary coil;
A secondary core arranged to pass through the central axis of the secondary coil;
A secondary housing supporting the secondary coil and the secondary core;
With
A non-contact power feeding device that supplies power from the primary side to the secondary side in a state where the primary side core and the secondary side core are in contact with each other,
The secondary core is made of a soft magnetic material made of rubber in which a soft magnetic material is dispersed, a soft magnetic material made of a resin in which a soft magnetic material is dispersed, or a mixed material of rubber and resin in which a soft magnetic material is dispersed. made with the construction of a soft magnetic material, even in contact in a state the plane of the contact side of the contact-side surface and the secondary side core of the primary side core are not parallel, the deformation of the secondary side core, the primary core And the secondary core is configured to be able to come into surface contact .

  According to the present invention, since the secondary side core is made of a soft magnetic material made of rubber, resin, etc., the primary side core and the secondary side core exhibit the original function of concentrating the magnetic flux. It is possible to buffer the impact when the touches. In addition, since power is supplied in a state where the primary side core and the secondary side core are in contact with each other, it is possible to improve power supply efficiency. In addition, even if the primary side core and the secondary side core are in contact with each other with a slight shift, the power can be stably supplied because the cores are on both sides. Moreover, even if the contact side surface of the primary side core and the contact side surface of the secondary side core are in contact with each other in a non-parallel state, the secondary side core can be deformed to bring them into surface contact. Thereby, electric power can be stably supplied.

Where the secondary core is
A core body,
It is good to have a diaphragm part which supports this core body part so that movement in the contact and separation direction of a primary side core and a secondary side core is possible.

  As a result, when the primary side core and the secondary side core contact (collision), the core body portion of the secondary side core moves (vibrates) in the contact / separation direction of the primary side core and the secondary side core. , Shock can be further buffered. Even if the contact side surface of the primary side core and the contact side surface of the secondary side core are in contact with each other in a largely inclined state, the diaphragm portion is deformed in addition to the deformation of the secondary side core. Can be brought into surface contact.

The secondary core is
A core body,
It is good to have the bellows part which supports this core main-body part so that a movement in the contact / separation direction of a primary side core and a secondary side core is possible.

  Even when such a configuration is adopted, when the primary side core and the secondary side core come into contact (collision), the core body portion of the secondary side core is in the contact / separation direction between the primary side core and the secondary side core. Therefore, the shock can be further buffered. Even if the contact side surface of the primary side core and the contact side surface of the secondary side core are in contact with each other in a greatly inclined state, both the deformation of the bellows part in addition to the deformation of the secondary side core, Can be brought into surface contact.

Moreover, the non-contact power feeding device of the present invention is
A primary housing;
A primary coil provided in the primary housing;
A primary core having a protruding portion that passes through the primary side coil and protrudes toward the inside of the through hole provided in the primary side housing;
A secondary housing,
A secondary coil provided in the secondary housing;
A secondary side core having a protruding portion that passes through the secondary side coil and protrudes toward the inside of the through hole provided in the secondary side housing;
With
A non-contact power feeding device that supplies power from the primary side to the secondary side in a state where the primary side core and the secondary side core are in contact with each other,
The secondary core is made of a soft magnetic material made of rubber in which a soft magnetic material is dispersed, a soft magnetic material made of a resin in which a soft magnetic material is dispersed, or a mixed material of rubber and resin in which a soft magnetic material is dispersed. It is constituted by comprising a soft magnetic material, provided with a seal portion for blocking the route to the interior of the secondary side housing through a through hole provided externally of the secondary-side housing on the secondary side housing Even if the contact side surface of the primary side core and the contact side surface of the secondary side core are not parallel, the primary side core and the secondary side core can be brought into surface contact by deformation of the secondary side core. It is comprised by these.

According to the present invention, since the power supply in state form is brought into contact with the primary core and the secondary side core, it is possible to improve the power supply efficiency. In addition, even if the primary side core and the secondary side core are in contact with each other with a slight shift, the power can be stably supplied because the cores are on both sides. Further, although the secondary core is made of rubber or resin or a mixed material of rubber and resin, it is a soft magnetic material in which a soft magnetic material is dispersed, so that a predetermined magnetic permeability can be obtained. And according to this invention, the secondary side core is comprised from the mixed material of rubber | gum or resin or rubber | gum, and resin via the through-hole provided in the secondary side housing | casing from the exterior of the secondary side housing | casing. Since the seal portion that blocks the path leading to the inside of the secondary housing is provided, it is possible to suppress intrusion of fluid and foreign matters from the outside of the housing to the inside. Furthermore, in the present invention, since the secondary side core is made of a soft magnetic material made of rubber, resin, etc., the primary side core and the secondary side are exhibited while exhibiting the original function of concentrating the magnetic flux. The impact when the core comes into contact can be buffered. Moreover, even if the contact side surface of the primary side core and the contact side surface of the secondary side core are in contact with each other in a non-parallel state, the secondary side core can be deformed to bring them into surface contact. Thereby, electric power can be stably supplied.

  The secondary core may be provided with a cover portion that covers a surface (back surface) opposite to the surface facing the inner surface of the secondary casing in the secondary coil.

  Thereby, the magnetic flux from the back surface in a secondary side coil can be made to go to the secondary side core side, and the magnetic flux density which penetrates a secondary side coil can be raised. Therefore, the power supply efficiency can be further increased.

  Alternatively, it is also preferable that a cover member made of a soft magnetic material is provided to cover a surface on the opposite side of the surface facing the inner surface of the secondary casing in the secondary coil.

Even in this case, the magnetic flux from the back surface of the secondary coil can be directed to the secondary core, and the magnetic flux density penetrating the secondary coil can be increased. Therefore, the power supply efficiency can be further increased. Note that the magnetic permeability of the cover member can be changed to the magnetic permeability of the secondary core by changing the composition of the material and material of the cover member to that of the secondary core. In this case, it is possible to concentrate the magnetic flux to the primary side core by setting the permeability of the cover member to be equal to or less than the permeability of the primary side core. Further, it is possible to direct the magnetic flux depending on the shape of the cover member, and it is possible to concentrate the magnetic flux on the secondary side core also by the shape.

  Here, the seal portion may adopt various shapes depending on the configuration of the device to which the non-contact power feeding device is applied, such as a grommet or a gasket shape. When the seal portion is configured by a convex portion that is in close contact with the inner surface of the secondary housing, the seal portion configured by the convex portion is pressed against the inner surface of the secondary housing. Sealing performance is demonstrated.

  Therefore, the cover member is made of a material having rigidity higher than that of the secondary side core, and the secondary side casing is pressed in a state where the secondary side core is pressed toward the inner surface of the secondary side casing. It should be positioned in the body.

  Thereby, the contact | adhesion power to the surface inside the secondary side housing | casing in a convex part can be improved uniformly, and a sealing performance can be improved.

  Here, the contactless power supply device of the present invention can be broadly divided into a case where the primary core is made of a soft magnetic material made of rubber, resin or the like, and a case where the secondary core is made of a soft magnetic material made of rubber, resin or the like. Shown when configured. From the viewpoint of buffering the impact when the primary side core and the secondary side core contact (collision), it is desirable that the cores on both sides be made of a soft magnetic material made of rubber, resin, or the like.

  Moreover, as a non-contact electric power feeder of this invention, it roughly classify | categorized and the case where a primary side core is provided with a seal part, and the case where a secondary side core is provided with a seal part were shown. When sealing performance is required on both the primary side and the secondary side, it is desirable to adopt a configuration in which both the primary side core and the secondary side core are provided with a seal portion. And when sealing performance is requested | required only in any one side, the structure provided with a sealing part only in the core of the side by which sealing performance is requested | required is employable. In this case, the soft magnetic material made of rubber in which the soft magnetic material is dispersed, the soft magnetic material made of resin in which the soft magnetic material is dispersed, or the soft magnetic material is dispersed on the side where the sealing performance is not required. There is no need to adopt a core made of a soft magnetic material made of a mixed material of rubber and resin, and the power supply efficiency can be increased by adopting a core made of the soft magnetic material itself.

  In addition, said each structure can be employ | adopted combining as much as possible.

  As described above, according to the present invention, it is possible to improve the power supply efficiency.

FIG. 1 is a block diagram showing the main components of an electromagnetic induction type non-contact power feeding device. FIG. 2 is a schematic cross-sectional view of the main components of the non-contact power feeding apparatus according to Embodiment 1 of the present invention. FIG. 3 is a schematic cross-sectional view of the main components of the non-contact power feeding apparatus according to Embodiment 1 of the present invention. FIG. 4 is a schematic cross-sectional view of the main components of the non-contact power feeding apparatus according to Embodiment 2 of the present invention. FIG. 5 is a schematic cross-sectional view of the main components of the non-contact power feeding apparatus according to Embodiment 3 of the present invention. FIG. 6 is a schematic cross-sectional view of the main components of the non-contact power feeding apparatus according to Embodiment 4 of the present invention. FIG. 7 is a schematic cross-sectional view of the main components of the non-contact power feeding apparatus according to Embodiment 5 of the present invention. FIG. 8 is a schematic cross-sectional view of the main components of the non-contact power feeding apparatus according to Embodiment 6 of the present invention. FIG. 9 is a schematic cross-sectional view of the main components of the non-contact power feeding apparatus according to Embodiment 7 of the present invention. FIG. 10 is a schematic cross-sectional view of main components of a contactless power feeding device according to a conventional example.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be exemplarily described in detail with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention only to those unless otherwise specified. .

<Outline of contactless power supply device>
Prior to detailed description of the non-contact power feeding apparatus according to the present embodiment, an outline (schematic configuration and principle) of the non-contact power feeding apparatus using the electromagnetic induction phenomenon will be briefly described with reference to FIG.

  The primary side (power supply side) device and the secondary side (power receiving side) device each have a coil. When power supply (power supply) is performed, the primary device and the secondary device are arranged so that these coils face each other. When energization of the primary side coil is performed, a magnetic flux passing through the primary side coil and the secondary side coil is generated, and it is possible to pass a current to the secondary side coil by electromagnetic induction.

  The primary side device generally includes a primary side controller including a frequency converter that changes the frequency of the input current to a desired frequency for power transmission, and a control circuit for performing various controls. Is provided. Also, in the secondary side device, generally, a frequency converter that changes the frequency of the current generated in the secondary side coil to a desired frequency for output, and a control circuit for performing various controls. And a secondary side controller provided with.

  Thus, the non-contact power feeding device using the electromagnetic induction phenomenon can supply power from the primary side to the secondary side without requiring connection between metal terminals. For example, various devices can be driven by directly fed power, or a non-contact power feeding device can be used to charge a battery provided in a secondary device. As a specific example, it can be used for charging a battery of a large machine such as an electric vehicle or a robot as well as a small electric device such as a mobile phone, an electric toothbrush, and an electric razor.

  Various embodiments according to the present invention to be described below are characterized by the configurations of coils and cores provided in the primary side device and the secondary side device constituting the non-contact power feeding device, respectively. Therefore, for convenience of explanation, various embodiments will be described in detail using a diagram showing only the vicinity of the coil and the core.

(Example 1)
<Configuration of contactless power supply device>
With reference to FIG. 2, the non-contact electric power feeder which concerns on Example 1 of this invention is demonstrated. The non-contact power feeding device is configured by various components provided in the primary device 100 that is the power supply side and various components provided in the secondary device 200 that is the power receiving side.

  A coil (referred to as a primary side coil 120) is provided in a case (referred to as a primary side case 110) of the primary side device 100. The primary coil 120 is arranged in contact with the inner surface of the primary housing 110. A through hole 111 is provided in the primary housing 110.

  Further, the primary side device 100 is provided with a core (referred to as a primary side core 130) having a protruding portion that passes through the primary side coil 120 and protrudes toward the inside of the through hole 111 provided in the primary side casing 110. It has been. The primary side core 130 includes a soft magnetic body made of rubber in which a soft magnetic material is dispersed, a soft magnetic body made of resin in which a soft magnetic material is dispersed, or a mixed material of rubber and resin in which a soft magnetic material is dispersed. It is comprised by the soft magnetic body which consists of. Preferable examples of the soft magnetic material include iron (ferrite, pure iron), silicon iron, permalloy, supermalloy, permendur, sendust, and MnZn ferrite. Suitable examples of rubber materials include nitrile rubber (NBR), ethylene propylene rubber (EPDM), acrylic rubber (ACM), silicone rubber (VMQ), fluorine rubber (FKM), urethane rubber (UR), butyl rubber ( IIR). The resin material is preferably a thermoplastic elastomer, and specific examples include styrene thermoplastic elastomer, olefin thermoplastic elastomer, urethane thermoplastic elastomer, and polyester thermoplastic elastomer.

  Further, the primary core 130 includes a seal portion 131 that blocks a path from the outside of the primary housing 110 to the inside of the primary housing 110 through a through hole 111 provided in the primary housing 110. Here, the seal part 131 in the present embodiment employs a configuration in which the seal portion 131 is in close contact with the inner peripheral surface of the through hole 111 and the vicinity of the through hole 111 on the outer surface and the inner surface of the primary housing 110. Thereby, it can suppress that a fluid and a foreign material penetrate | invade from the outside, and can suppress having a bad influence on various electric systems, such as the primary side coil 120 with which the primary side apparatus 100 was equipped.

  The primary core 130 passes through the primary coil 120 and the through hole 111 and protrudes outside the primary housing 110. The tip of the protruding portion is constituted by a flat surface 132.

  A coil (referred to as a secondary coil 220) is provided in a housing (referred to as a secondary case 210) of the secondary device 200. The secondary coil 220 is disposed in contact with the inner surface of the secondary casing 210. The secondary housing 210 is provided with a through hole 211.

  Further, the secondary device 200 includes a core (secondary core 230 and a core having a projecting portion that passes through the secondary coil 220 and projects toward the inside of the through hole 211 provided in the secondary housing 210. Is provided). The secondary core 230 is composed of a soft magnetic material made of rubber in which a soft magnetic material is dispersed, a soft magnetic material made of resin in which a soft magnetic material is dispersed, or a mixture of rubber and resin in which a soft magnetic material is dispersed. It is composed of a soft magnetic material made of a material. Suitable examples of the soft magnetic material, rubber material, and resin material in the secondary side core 230 are the same as those in the case of the primary side core 130, and thus description thereof is omitted.

Further, the secondary core 230 is a seal portion that blocks a path from the outside of the secondary side casing 210 to the inside of the secondary side casing 210 through the through hole 211 provided in the secondary side casing 210. 231. Here, the seal part 231 in the present embodiment adopts a configuration in which the seal portion 231 is in close contact with the inner peripheral surface of the through hole 211 and the vicinity of the through hole 211 on the outer surface and the inner surface of the secondary casing 210. . Thereby, it can suppress that a fluid and a foreign material penetrate | invade from the outside, and can suppress having a bad influence on various electric systems, such as the secondary side coil 220 with which the secondary side apparatus 200 was equipped.

  The secondary core 230 is inserted through the secondary coil 220 and the through hole 211 and protrudes to the outside of the secondary housing 210. The tip of the protruding portion is constituted by a flat surface 232.

<Power supply operation>
With reference to FIG. 3, the electric power feeding operation | movement in the non-contact electric power feeder which concerns on Example 1 of this invention is demonstrated. When power supply (power supply) is performed, the primary device 100 and the secondary device 200 are arranged so that the flat surface 132 of the primary core 130 and the flat surface 232 of the secondary core 230 are in contact with each other. Arrange.

  In this state, when a current is passed through the primary side coil 120, a magnetic flux penetrating the primary side coil 120 and the secondary side coil 220 is generated. Thereby, it becomes possible to flow an electric current through the secondary side coil 220 by electromagnetic induction.

<Excellent points of this embodiment>
According to the non-contact power feeding device according to the present embodiment, power feeding is performed in a state where the primary side core 130 and the secondary side core 230 are in contact with each other, so that the power supply efficiency can be increased. Even if the primary core 130 and the secondary core 230 are in contact with each other with a slight shift, the power can be stably supplied because the cores are on both sides. The primary side core 130 and the secondary side core 230 are made of rubber or resin, or a mixed material of rubber and resin, but are soft magnetic materials in which soft magnetic materials are dispersed. Can be obtained. According to the present embodiment, the primary side core 130 is made of rubber or resin or a mixed material of rubber and resin, and the through-hole 111 provided in the primary side case 110 from the outside of the primary side case 110. There is provided a seal portion 131 that blocks a path leading to the inside of the primary housing 110 via the. Therefore, intrusion of fluid and foreign matters from the outside to the inside of the primary side housing 110 can be suppressed. Further, in the present embodiment, the secondary side core 230 is also made of rubber or resin or a mixed material of rubber and resin, and is provided in the secondary side case 210 from the outside of the secondary side case 210. A seal portion 231 is provided to block a path reaching the inside of the secondary housing 210 through the through hole 211. Therefore, intrusion of fluid and foreign matters from the outside to the inside of the secondary housing 210 can be suppressed. Furthermore, in the present invention, the primary side core 130 and the secondary side core 230 are made of a soft magnetic material made of rubber, resin, etc., so that the primary function of concentrating the magnetic flux is exerted while the primary core 130 and the secondary side core 230 are concentrated. The impact when the side core 130 and the secondary core 230 come into contact with each other can be buffered. Furthermore, even if the flat surface 132 at the tip of the primary core 130 and the flat surface 232 at the tip of the secondary core 230 are in contact with each other in a non-parallel state, the primary core 130 and the secondary core 230 are deformed. Both can be brought into surface contact. Thereby, electric power can be stably supplied.

(Example 2)
FIG. 4 shows a second embodiment of the present invention. In the present embodiment, a configuration in which a cover portion that covers a surface of the coil opposite to the surface facing the inner surface of the casing in the coil is shown. Since the configuration and operation other than the core are the same as those in the first embodiment, the same components are denoted by the same reference numerals, and the description thereof is omitted as appropriate.

  The non-contact power feeding device according to the second embodiment of the present invention includes various components provided in the primary device 100a that is a power supply side and various components provided in the secondary device 200a that is a power receiving side. Is done. About the structure of a housing | casing and a coil, since it is the same structure as the said Example 1, the description is abbreviate | omitted.

  Also in the primary device 100a according to the present embodiment, a core having a protruding portion that passes through the primary coil 120 and protrudes into the through hole 111 provided in the primary housing 110 (referred to as a primary core 130a). ) Is provided. Also in this embodiment, the primary core 130a is made of a soft magnetic material made of rubber in which a soft magnetic material is dispersed, or a resin in which a soft magnetic material is dispersed, like the primary core 130 in the first embodiment. Or a soft magnetic body made of a mixed material of rubber and resin in which a soft magnetic material is dispersed. Suitable examples of the soft magnetic material, the rubber material, and the resin material are the same as those in the case of the primary core 130 in the first embodiment, and thus the description thereof is omitted.

  Also in the present embodiment, the primary side core 130 a blocks a path from the outside of the primary side casing 110 to the inside of the primary side casing 110 through the through hole 111 provided in the primary side casing 110. A seal portion 131a is provided. The configuration of the seal portion 131a is the same as the configuration of the seal portion 131 in the first embodiment. Further, the primary side core 130 a is inserted through the primary side coil 120 and the through hole 111 and protrudes to the outside of the primary side casing 110. The tip of the protruding portion is constituted by a flat surface 132a.

  The primary side core 130a according to the present embodiment is provided with a cover portion 133a that covers a surface (back surface) opposite to the surface facing the inner surface of the primary side casing 110 in the primary side coil 120. Yes.

  Also in the secondary device 200a according to the present embodiment, a core having a protruding portion that protrudes toward the inside of the through hole 211 provided in the secondary housing 210 through the secondary coil 220 (secondary Called a secondary core 230a). Also in the present embodiment, the secondary core 230a is similar to the secondary core 230 in the first embodiment, in which a soft magnetic material made of rubber in which a soft magnetic material is dispersed or a soft magnetic material is dispersed. A soft magnetic body made of a resin, or a soft magnetic body made of a mixed material of rubber and resin in which a soft magnetic material is dispersed. Suitable examples of the soft magnetic material, rubber material, and resin material in the secondary side core 230a are the same as those in the case of the primary side core 130 in the first embodiment, and thus the description thereof is omitted.

  Also in the present embodiment, the secondary core 230 a reaches the inside of the secondary side casing 210 from the outside of the secondary side casing 210 through the through-hole 211 provided in the secondary side casing 210. A seal portion 231a for blocking the path is provided. The configuration of the seal portion 231a is the same as the configuration of the seal portion 231 in the first embodiment. Further, the secondary core 230 a is inserted through the secondary coil 220 and the through hole 211 and protrudes to the outside of the secondary housing 210. The tip of the protruding portion is constituted by a flat surface 232a.

  The secondary core 230a according to the present embodiment has a cover portion 233a that covers a surface (back surface) opposite to the surface facing the inner surface of the secondary casing 210 in the secondary coil 220. Is provided.

  Since the power feeding operation is the same as that in the first embodiment, the description thereof is omitted.

Also in the non-contact power feeding device according to the present embodiment configured as described above, the same effect as in the case of the first embodiment can be obtained. In this embodiment, the primary core 130a is provided with a cover portion 133a. Thereby, the effect which directs the magnetic flux which has spread to the outside to the inside arises. That is, the magnetic flux from the back surface of the primary coil 120 can be directed to the primary core 130a. Therefore, the magnetic flux density penetrating the primary coil 120 can be increased compared to the case of the first embodiment. Similarly, the secondary side core 230a is provided with a cover portion 233a. Therefore, the magnetic flux density penetrating the secondary coil 220 can also be increased as compared with the case of the first embodiment. From the above, compared with the case of the first embodiment, the power supply efficiency can be further increased.

(Example 3)
FIG. 5 shows a third embodiment of the present invention. In the present embodiment, a case where the configuration of the seal portion is different from those of the first and second embodiments will be described. Since the configuration and operation other than the core are the same as those in the second embodiment, the same components are denoted by the same reference numerals, and the description thereof is omitted as appropriate.

  The non-contact power feeding device according to the third embodiment of the present invention includes various components provided in the primary device 100b that is a power supply side and various components provided in the secondary device 200b that is a power receiving side. Is done. About the structure of a housing | casing and a coil, since it is the same structure as the said Examples 1 and 2, the description is abbreviate | omitted.

  Also in the primary side device 100b according to the present embodiment, a core (referred to as a primary side core 130b) that has a protruding portion that passes through the primary side coil 120 and protrudes toward the inside of the through hole 111 provided in the primary side casing 110. ) Is provided. Also in this embodiment, the primary core 130b is made of a soft magnetic material made of rubber in which a soft magnetic material is dispersed, or a resin in which a soft magnetic material is dispersed, like the primary core 130 in the first embodiment. Or a soft magnetic body made of a mixed material of rubber and resin in which a soft magnetic material is dispersed. Suitable examples of the soft magnetic material, the rubber material, and the resin material are the same as those in the case of the primary core 130 in the first embodiment, and thus the description thereof is omitted.

  Also in the present embodiment, the primary side core 130 b blocks a path from the outside of the primary side casing 110 to the inside of the primary side casing 110 through the through hole 111 provided in the primary side casing 110. A seal portion 131b is provided. The seal portion 131b is configured by an annular convex portion, and employs a configuration in which the tip thereof is in close contact with the inner surface of the primary housing 110. The seal portion 131b is pressed toward the inner surface of the primary housing 110 by a member (not shown) inside the housing, and is in close contact with the surface with a surface pressure necessary for sealing. Yes. In addition, this seal part 131b is provided so that the circumference | surroundings of the protrusion part in the primary side core 130b may be surrounded.

  Further, the primary side core 130 b passes through the primary side coil 120 and the through hole 111 and protrudes to the outside of the primary side casing 110. The tip of the protruding portion is constituted by a flat surface 132b. Here, in the case of the first and second embodiments, the configuration in which the seal portions 131 and 131a are in close contact with the vicinity of the through-hole 111 is employed, so the amount of protrusion of the primary side core that protrudes outside the housing is somewhat It needs to be bigger. On the other hand, in the case of the present embodiment, as described above, the seal portion 131b is configured by an annular convex portion whose tip is in close contact with the inner surface of the primary housing 110. Therefore, the protruding amount of the protruding portion in the primary side core 130b may be small. Further, the flat surface 132b of the primary core 130b may be flush with the outer surface of the primary housing 110.

  Further, in the primary side core 130b according to the present embodiment, as in the case of the second embodiment, a surface (back surface) opposite to the surface facing the inner surface of the primary casing 110 in the primary coil 120 is provided. ) Is provided.

Also in the secondary side device 200b according to the present embodiment, the core (secondary core) having a protruding portion that passes through the secondary side coil 220 and protrudes toward the inside of the through hole 211 provided in the secondary side casing 210 is also provided. Called a secondary core 230b). Also in the present embodiment, the secondary core 230b is similar to the secondary core 230 in the first embodiment, in which a soft magnetic material made of rubber in which a soft magnetic material is dispersed or a soft magnetic material is dispersed. A soft magnetic body made of a resin, or a soft magnetic body made of a mixed material of rubber and resin in which a soft magnetic material is dispersed. Suitable examples of the soft magnetic material, the rubber material, and the resin material in the secondary side core 230b are the same as those in the case of the primary side core 130 in the first embodiment, and thus the description thereof is omitted.

  Also in the present embodiment, the secondary core 230 b reaches the inside of the secondary side casing 210 from the outside of the secondary side casing 210 through the through hole 211 provided in the secondary side casing 210. A seal portion 231b for blocking the path is provided. This seal portion 231b is configured by an annular convex portion, and employs a configuration in which the tip thereof is in close contact with the inner surface of the secondary housing 210. The seal portion 231b is pressed toward the inner surface of the secondary housing 210 by a member (not shown) inside the housing, and is in close contact with the surface with a surface pressure necessary for sealing. ing. In addition, this seal part 231b is provided so that the circumference | surroundings of the protrusion part in the secondary side core 230b may be surrounded.

  Further, the secondary side core 230 b is inserted through the secondary side coil 220 and the through hole 211 and protrudes to the outside of the secondary side casing 210. The tip of the protruding portion is constituted by a flat surface 232b. Here, in the case of the first and second embodiments, the structure in which the seal portions 231 and 231a are in close contact with the vicinity of the through-hole 211 is employed, so the amount of protrusion of the secondary side core that protrudes outside the housing is set. It needs to be enlarged to some extent. On the other hand, in the case of the present embodiment, as described above, the seal portion 231b is configured by an annular convex portion whose tip is in close contact with the inner surface of the secondary housing 210. Therefore, the protruding amount of the protruding portion in the secondary core 230b may be small. Further, the flat surface 232b of the secondary core 230b may be flush with the outer surface of the secondary housing 210.

  Further, in the secondary core 230b according to the present embodiment, as in the case of the second embodiment, the secondary coil 220 has a surface opposite to the surface facing the inner surface of the secondary housing 210. A cover portion 233b that covers the surface (rear surface) is provided.

  Since the power feeding operation is the same as that in the first embodiment, the description thereof is omitted.

  Also in the non-contact power feeding device according to the present embodiment configured as described above, the same effect as in the second embodiment can be obtained. In the case of the present embodiment, as described above, compared to the case of the first and second embodiments, the amount of protrusion of the primary side core 130b to the outside of the primary side casing 110 and the amount of the secondary side core 230b The amount of protrusion to the outside of the secondary housing 210 can be reduced.

Example 4
FIG. 6 shows a fourth embodiment of the present invention. In the present embodiment, in the configuration shown in the third embodiment, the portion corresponding to the cover portion is not provided integrally with the core, but is configured as a separate member. Since other configurations and operations are the same as those of the third embodiment, the same components are denoted by the same reference numerals, and the description thereof is omitted as appropriate.

  The non-contact power feeding device according to the fourth embodiment of the present invention includes various components provided in the primary device 100c that is the power supply side and various components provided in the secondary device 200c that is the power receiving side. Is done. About the structure of a housing | casing and a coil, since it is the same structure as the said Examples 1-3, the description is abbreviate | omitted.

Also in the primary side device 100c according to the present embodiment, a core (referred to as a primary side core 130c) that has a protruding portion that passes through the primary side coil 120 and protrudes toward the inside of the through hole 111 provided in the primary side casing 110 is also referred to. ) Is provided. Also in this embodiment, the primary core 130c is made of a soft magnetic material made of rubber in which a soft magnetic material is dispersed, or a resin in which a soft magnetic material is dispersed, like the primary core 130 in the first embodiment. Or a soft magnetic body made of a mixed material of rubber and resin in which a soft magnetic material is dispersed. Suitable examples of the soft magnetic material, the rubber material, and the resin material are the same as those in the case of the primary core 130 in the first embodiment, and thus the description thereof is omitted.

  Also in the present embodiment, the primary core 130 c blocks a path from the outside of the primary housing 110 to the inside of the primary housing 110 through the through hole 111 provided in the primary housing 110. A seal portion 131c is provided. The seal portion 131 c is configured by an annular convex portion, and employs a configuration in which the tip thereof is in close contact with the inner surface of the primary housing 110. In addition, this seal part 131c is provided so that the circumference | surroundings of the said protrusion part in the primary side core 130c may be surrounded. Further, the primary side core 130 c is inserted through the primary side coil 120 and the through hole 111 and protrudes to the outside of the primary side casing 110. The tip of the protruding portion is constituted by a flat surface 132c. Also in the present embodiment, as in the case of the above-described third embodiment, the amount of protrusion of the primary-side core 130c to the outside of the primary housing 110 can be made smaller than in the first and second embodiments. .

  In this embodiment, in close contact with the primary side core 130c and in close contact with the surface (back surface) opposite to the inner surface of the primary side casing 110 in the primary side coil 120, A cover member 140 made of a soft magnetic material covering the back surface is provided. The cover member 140 is made of a material having a permeability equal to or less than the permeability of the primary core 130c. Further, the cover member 140 is made of a material having higher rigidity than the primary side core 130c, and the primary side housing 130c is pressed against the inner surface of the primary side housing 110 in a state where the primary side core 130c is pressed. Positioned within the body 110. Thereby, the primary side core 130c is stably pressed toward the inner surface of the primary side casing 110. Therefore, the surface pressure of the seal portion 131c becomes uniform, and stable sealing performance is exhibited.

  Also in the secondary side device 200c according to the present embodiment, a core (secondary core) having a protruding portion that passes through the secondary side coil 220 and protrudes toward the inside of the through hole 211 provided in the secondary side casing 210 (second Called a secondary core 230c). Also in the present embodiment, the secondary core 230c is similar to the secondary core 230 in the first embodiment, in which a soft magnetic material made of rubber in which a soft magnetic material is dispersed or a soft magnetic material is dispersed. A soft magnetic body made of a resin, or a soft magnetic body made of a mixed material of rubber and resin in which a soft magnetic material is dispersed. Suitable examples of the soft magnetic material, the rubber material, and the resin material in the secondary side core 230c are the same as those in the case of the primary side core 130 in the first embodiment, and thus the description thereof is omitted.

  Also in the present embodiment, the secondary core 230 c reaches the inside of the secondary side casing 210 from the outside of the secondary side casing 210 through the through hole 211 provided in the secondary side casing 210. A seal portion 231c for blocking the path is provided. The seal portion 231c is configured by an annular convex portion, and employs a configuration in which the tip thereof is in close contact with the inner surface of the secondary housing 210. In addition, this seal part 231c is provided so that the circumference | surroundings of the said protrusion part in the secondary side core 230c may be surrounded. Further, the secondary core 230 c is inserted through the secondary coil 220 and the through hole 211 and protrudes to the outside of the secondary housing 210. The tip of the protruding portion is constituted by a flat surface 232c. Also in this embodiment, as in the case of the above-described third embodiment, the amount of protrusion of the secondary-side core 230c to the outside of the secondary-side housing 210 is made smaller than in the case of the first and second embodiments. Can do.

In this embodiment, the secondary coil 220 is in close contact with the secondary core 230c.
A cover member 240 made of a soft magnetic material is provided to cover the back surface in close contact with a surface (back surface) opposite to the surface facing the inner surface of the secondary casing 210. The cover member 240 is made of a material having a permeability equal to or less than the permeability of the secondary core 230c. Further, the cover member 240 is made of a material having higher rigidity than the secondary side core 230c, and the secondary side core 230c is pressed toward the inner side surface of the secondary side casing 210. Positioned within the primary housing 110. Thereby, the secondary core 230c is stably pressed toward the inner surface of the secondary housing 210. Therefore, the surface pressure of the seal portion 231c becomes uniform, and stable sealing performance is exhibited.

  Since the power feeding operation is the same as that in the first embodiment, the description thereof is omitted.

  Also in the non-contact power feeding device according to the present embodiment configured as described above, the same effect as in the third embodiment can be obtained. Further, in the present embodiment, the cover member 140 is made of a material having higher rigidity than the primary side core 130c, and the primary side core 130c is pressed toward the inner surface of the primary side casing 110. Thus, it is positioned in the primary casing 110. Thereby, the contact | adhesion power to the surface inside the primary side housing | casing 110 in the seal | sticker part 131c can be heightened. Therefore, the sealing performance can be further improved. Similarly, the cover member 240 is made of a material having higher rigidity than the secondary side core 230c, and the secondary side core 230c is pressed toward the inner surface of the secondary side casing 210. Thus, it is positioned within the secondary casing 210. Therefore, the sealing performance can be further improved.

<Others>
In the non-contact electric power feeder which concerns on the said Examples 1-4, the case where the structure of a primary side and the structure of a secondary side were the same structures was shown. However, regarding the configuration on the primary side and the configuration on the secondary side, the configurations shown in the respective embodiments can be appropriately combined. That is, for example, the primary side core 130 shown in the first embodiment can be adopted for the primary side apparatus, and the configuration of the secondary side core 230a shown in the second embodiment can be adopted for the secondary side apparatus. .

  Moreover, in the non-contact electric power feeder which concerns on the said Examples 1-4, the case where the structure which equips a primary side core and a secondary side core with a seal | sticker part was shown. However, depending on the application, either one may not require a sealing property. In such a case, it is desirable to employ any of the cores shown in the above embodiments only on the core on which the sealing property is required. In other words, in this case, the side where the sealing performance is not required, for example, as shown in the conventional example, can employ a core whose core is made of the soft magnetic material itself, thereby further improving the power supply efficiency. it can.

  In the non-contact electric power feeder which concerns on each said Example, it showed about the structure which contacts a primary side core and a secondary side core at the time of electric power feeding. However, power supply may be performed in a state where the primary side core and the secondary side core are sufficiently close (close state). Even in this case, although the power supply efficiency is reduced as compared with the case where the two are brought into contact with each other, the power supply efficiency can be increased as compared with the case where the region where the magnetic flux is formed is blocked by the housing or the like. it can. In addition, when employ | adopting the structure which does not contact a primary side core and a secondary side core, it is not necessary to make a core protrude outside the housing | casing. That is, in each of the embodiments described above, the core is configured to be inserted through the coil and the through hole (the through hole provided in the housing) and protrude to the outside of the housing. However, when the primary side core and the secondary side core are not in contact with each other, the core may be the same surface as the outer surface of the housing, or may be slightly recessed from the outer surface of the housing. Thereby, an external appearance can be improved.

(Example 5)
With reference to FIG. 7, the non-contact electric power feeder which concerns on Example 5 of this invention is demonstrated. Also in the non-contact power feeding device according to the present embodiment, similarly to each of the embodiments described above, various components provided in the primary device 100d that is the power supply side and the secondary device 200d that is the power receiving side are provided. It is comprised by the various structural members.

  In the present embodiment, the primary side coil 120 is provided inside the primary side casing 110d. Further, the primary side casing 110d is provided with a recess 111d on the outside side. And the primary side core 130d is arrange | positioned at this recessed part 111d. The primary side core 130d is provided so as to protrude from the surface of the primary side casing 110d. And the front-end | tip of the part which this primary side core 130d protrudes is comprised by the flat surface 132d.

  Also in this embodiment, the primary core 130d is made of a soft magnetic material made of rubber in which a soft magnetic material is dispersed, or a resin in which a soft magnetic material is dispersed, like the primary core 130 in the first embodiment. Or a soft magnetic body made of a mixed material of rubber and resin in which a soft magnetic material is dispersed. Suitable examples of the soft magnetic material, the rubber material, and the resin material are the same as those in the case of the primary core 130 in the first embodiment, and thus the description thereof is omitted.

  Also in the secondary device 200d according to the present embodiment, the secondary coil 220 is provided inside the secondary housing 210d. Further, the secondary casing 210d is provided with a recess 211d on the outside. And the secondary side core 230d is arrange | positioned at this recessed part 211d. The secondary core 230d is provided so as to protrude from the surface of the secondary casing 210d. And the front-end | tip of the part which this secondary side core 230d protrudes is comprised by the flat surface 232d.

  Also in the present embodiment, the secondary core 230d is similar to the primary core 130 in the first embodiment, and is a soft magnetic body made of rubber in which a soft magnetic material is dispersed, or a resin in which a soft magnetic material is dispersed. Or a soft magnetic material made of a mixed material of rubber and resin in which a soft magnetic material is dispersed. Suitable examples of the soft magnetic material, the rubber material, and the resin material are the same as those in the case of the primary core 130 in the first embodiment, and thus the description thereof is omitted.

  Since the power feeding operation is the same as that in the first embodiment, the description thereof is omitted.

  As described above, according to the non-contact power feeding device according to the present embodiment, power is fed in a state where the primary core 130d and the secondary core 230d are in contact with each other, as in the above embodiments. The power supply efficiency can be increased. Even if the primary side core 130d and the secondary side core 230d are in contact with each other with a slight shift, the power can be supplied stably because the cores are on both sides. In addition, since the primary side core 130d and the secondary side core 230d are made of a soft magnetic material made of rubber, resin, or the like, the primary side core 130d and the secondary side core 130d can be connected to the secondary side core 130d while performing the original function of concentrating magnetic flux. The impact when the secondary core 230d comes into contact can be buffered. Furthermore, even if the flat surface 132d at the tip of the primary core 130d and the flat surface 232d at the tip of the secondary core 230d are in contact with each other without being parallel, the primary core 130d and the secondary core 230d are deformed. Both can be brought into surface contact. Thereby, electric power can be stably supplied.

  In the primary device 100d according to the present embodiment, the primary coil 120 is embedded in the primary housing 110d, and the primary core 130d is a recess provided outside the primary housing 110d. 111d. Therefore, there is no problem that fluid or foreign matter enters from the outside in the portion where the primary coil 120 or the like is provided. This also applies to the secondary device 200d.

(Example 6)
With reference to FIG. 8, the non-contact electric power feeder which concerns on Example 6 of this invention is demonstrated. Also in the non-contact power feeding device according to the present embodiment, similarly to the above embodiments, various components provided in the primary device 100e that is the power supply side and the secondary device 200d that is the power receiving side are provided. It is comprised by the various structural members. The present embodiment is a modification of the fifth embodiment, and the configuration of the secondary device 200d is the same as that of the fifth embodiment, and thus the description thereof is omitted.

  Also in the present embodiment, the primary coil 120 is provided inside the primary housing 110e. The primary side housing 110e is provided with a through hole 111e. And the primary side core 130e is provided so that this through-hole 111e may be penetrated. The primary core 130e is provided with a diaphragm 131e on one end side of the core body. The outer peripheral portion of the diaphragm portion 131e is fixed in a state of being in close contact along the inner edge of the opening on the inner side of the through hole 111e in the primary housing 110e over the entire circumference. Further, the other end side of the core body portion of the primary side core 130e is provided so as to protrude from the surface of the primary side casing 110e. And the front-end | tip of the part which this primary side core 130e protrudes is comprised by the flat surface 132e.

  Also in this embodiment, the primary core 130e is made of a soft magnetic material made of rubber in which a soft magnetic material is dispersed, or a resin in which a soft magnetic material is dispersed, like the primary core 130 in the first embodiment. Or a soft magnetic body made of a mixed material of rubber and resin in which a soft magnetic material is dispersed. Suitable examples of the soft magnetic material, the rubber material, and the resin material are the same as those in the case of the primary core 130 in the first embodiment, and thus the description thereof is omitted.

  Since the power feeding operation is the same as that in the first embodiment, the description thereof is omitted.

  As described above, also in the non-contact power feeding apparatus according to the present embodiment, the same effect as that of the non-contact power feeding apparatus according to the fifth embodiment can be obtained. In the case of the present embodiment, the primary side core 130e is provided with a diaphragm portion 131e on one end side of the core body portion. Thereby, the core body can move due to the deformation of the diaphragm 131e (particularly, it can move in the contact / separation direction of the primary core 130e and the secondary core 230d). Therefore, the function of buffering the impact when the primary side core 130e and the secondary side core 230d come into contact with each other can be further enhanced compared to the case of the fifth embodiment. Further, since the diaphragm portion 131e is deformed, even when the flat surface 132e at the tip of the primary core 130e and the flat surface 232d at the tip of the secondary core 230d are in contact with each other, they are brought into surface contact. The effect that can be achieved can be further enhanced as compared with the case of the fifth embodiment.

  Also in the present embodiment, the outer peripheral portion of the diaphragm 131e is fixed in a state of being in close contact along the inner edge of the opening on the inner side of the through-hole 111e in the primary housing 110e over the entire circumference. Therefore, there is no problem that fluid or foreign matter enters from the outside in the portion where the primary coil 120 or the like is provided.

(Example 7)
With reference to FIG. 9, the non-contact electric power feeder which concerns on Example 7 of this invention is demonstrated. Also in the non-contact power feeding device according to the present embodiment, similarly to each of the above embodiments, the various components provided in the primary device 100f that is the power supply side and the secondary device 200d that is the power receiving side are provided. It is comprised by the various structural members. The present embodiment is a modification of the fifth embodiment, and the configuration of the secondary device 200d is the same as that of the fifth embodiment, and thus the description thereof is omitted.

  Also in the present embodiment, the primary side coil 120 is provided inside the primary side casing 110f. The primary housing 110f is provided with a recess 111f on the outside. And the primary side core 130f is arrange | positioned in this recessed part 111f. The primary core 130f is provided with a bellows portion 131f on one end side of the core body portion. One end side of the bellows portion 131f is fixed to the core body portion, and the other end side is fixed to the bottom surface of the recess 111f. Further, the other end side of the core body portion of the primary side core 130f is provided so as to protrude from the surface of the primary side casing 110f. And the front-end | tip of the part which this primary side core 130f protrudes is comprised by the flat surface 132f.

  Also in this embodiment, the primary core 130f is made of a soft magnetic material made of rubber in which a soft magnetic material is dispersed, or a resin in which a soft magnetic material is dispersed, like the primary core 130 in the first embodiment. Or a soft magnetic body made of a mixed material of rubber and resin in which a soft magnetic material is dispersed. Suitable examples of the soft magnetic material, the rubber material, and the resin material are the same as those in the case of the primary core 130 in the first embodiment, and thus the description thereof is omitted.

  Since the power feeding operation is the same as that in the first embodiment, the description thereof is omitted.

  As described above, also in the non-contact power feeding apparatus according to the present embodiment, the same effect as that of the non-contact power feeding apparatus according to the fifth embodiment can be obtained. In the case of the present embodiment, the primary side core 130f is provided with a bellows portion 131f on one end side of the core body portion. As a result, the deformation of the bellows portion 131f allows the core body portion to move (in particular, it can move in the contact / separation direction of the primary side core 130f and the secondary side core 230d). Therefore, the function of buffering an impact when the primary side core 130f and the secondary side core 230d come into contact with each other can be further enhanced as compared with the case of the fifth embodiment. Further, since the bellows portion 131f is deformed, even when the flat surface 132f at the tip of the primary core 130f and the flat surface 232d at the tip of the secondary core 230d are in contact with each other, they are brought into surface contact. The effect that can be achieved can be further enhanced as compared with the case of the fifth embodiment.

<Others>
In the sixth embodiment, the case where the primary core 130e having the diaphragm 131e provided on one end side of the core main body is shown. In the seventh embodiment, the bellows 131f is provided on one end of the core main body. The case where the primary side core 130f was employ | adopted was shown. However, it is also possible to adopt these configurations for the secondary core. That is, the same structure as the primary side core 130e shown in Example 6 can be adopted for the secondary side core. In this case, any of the fifth, sixth, and seventh embodiments may be adopted as the configuration of the primary side core. Further, the same configuration as that of the primary side core 130f shown in the seventh embodiment can be adopted for the secondary side core. Also in this case, any of the fifth, sixth, and seventh embodiments may be adopted as the configuration of the primary side core.

  In the non-contact electric power feeders according to Examples 1 to 7, the case where the core is formed of a soft magnetic material made of rubber, resin, or the like on both the primary side and the secondary side is shown. From the viewpoint of enhancing the buffer function when the two come into contact with each other, it is desirable that the cores on both sides be made of a soft magnetic material made of rubber, resin, or the like. However, when the impact force is not so high, only one of the cores may be made of a soft magnetic material made of rubber or resin.

100, 100a, 100b, 100c, 100d, 100e, 100f Primary side device 110, 110d, 110e, 110f Primary side casing 111, 111e Through hole 111d, 111f Recessed portion 120 Primary side coil 130, 130a, 130b, 130c, 130d, 130e, 130f Primary side core 131, 131a, 131b, 131c Sealing part 131e Diaphragm part 131f Bellows part 132, 132a, 132b, 132c, 132d, 132e, 132f Flat surface 133a, 133b Cover part 140 Cover member 200, 200a, 200b, 200c, 200d Secondary device 210, 210d Secondary housing 211 Through hole 211d Recess 220 Secondary coil 230, 230a, 230b, 230c, 230d Secondary core 23 , 231a, 231b, 231c seal portion 232,232a, 232b, 232c, 232d flat surfaces 233a, 233b cover 240 covering member

Claims (18)

A primary coil;
A primary core arranged to pass through the central axis of the primary coil;
A primary housing that supports the primary coil and the primary core;
A secondary coil;
A secondary core arranged to pass through the central axis of the secondary coil;
A secondary housing supporting the secondary coil and the secondary core;
With
A non-contact power feeding device that supplies power from the primary side to the secondary side in a state where the primary side core and the secondary side core are in contact with each other,
The primary core is made of a soft magnetic material made of rubber in which a soft magnetic material is dispersed, a soft magnetic material made of resin in which a soft magnetic material is dispersed, or a mixed material of rubber and resin in which a soft magnetic material is dispersed. together are constituted by a soft magnetic material, even in contact in a state the plane of the contact side of the contact-side surface and the secondary side core of the primary side core are not parallel, the deformation of the primary side core, the primary core and the secondary The non-contact electric power feeder characterized by the secondary side core being comprised so that surface contact is possible . The primary core is
A core body,
The contactless power supply device according to claim 1, further comprising a diaphragm portion that supports the core main body portion so as to be movable in a contact / separation direction of the primary side core and the secondary side core. The primary core is
A core body,
The non-contact power feeding device according to claim 1, further comprising: a bellows portion that supports the core main body portion so as to be movable in a contact / separation direction of the primary side core and the secondary side core. A primary housing;
A primary coil provided in the primary housing;
A primary core having a protruding portion that passes through the primary side coil and protrudes toward the inside of the through hole provided in the primary side housing;
A secondary housing,
A secondary coil provided in the secondary housing;
A secondary side core having a protruding portion that passes through the secondary side coil and protrudes toward the inside of the through hole provided in the secondary side housing;
With
A non-contact power feeding device that supplies power from the primary side to the secondary side in a state where the primary side core and the secondary side core are in contact with each other,
The primary core is made of a soft magnetic material made of rubber in which a soft magnetic material is dispersed, a soft magnetic material made of resin in which a soft magnetic material is dispersed, or a mixed material of rubber and resin in which a soft magnetic material is dispersed. The primary side core is configured by a soft magnetic body and includes a seal portion that blocks a path from the outside of the primary side casing to the inside of the primary side casing through a through hole provided in the primary side casing. Even if the contact side surface of the secondary side and the contact side surface of the secondary side core are in contact with each other in a non-parallel state, the primary side core and the secondary side core can be brought into surface contact by deformation of the primary side core. The non-contact electric power feeder characterized by the above-mentioned.   The non-contact according to claim 4, wherein the primary side core is provided with a cover portion that covers a surface of the primary side coil that is opposite to the surface facing the inner surface of the primary side casing. Power supply device.   The non-contact according to claim 4, wherein a cover member made of a soft magnetic material is provided to cover a surface of the primary coil that is opposite to the surface facing the inner surface of the primary housing. Power supply device. The seal portion is configured by a convex portion that is in close contact with the inner surface of the primary housing,
The cover member is made of a material having higher rigidity than the primary side core, and is positioned in the primary side casing in a state where the primary side core is pressed toward the inner surface of the primary side casing. The contactless power supply device according to claim 6. A primary coil;
A primary core disposed inside the primary coil;
A primary housing that supports the primary coil and the primary core;
A secondary coil;
A secondary core arranged to pass through the central axis of the secondary coil;
A secondary housing supporting the secondary coil and the secondary core;
With
A non-contact power feeding device that supplies power from the primary side to the secondary side in a state where the primary side core and the secondary side core are in contact with each other,
The secondary core is made of a soft magnetic material made of rubber in which a soft magnetic material is dispersed, a soft magnetic material made of a resin in which a soft magnetic material is dispersed, or a mixed material of rubber and resin in which a soft magnetic material is dispersed. made with the construction of a soft magnetic material, even in contact in a state the plane of the contact side of the contact-side surface and the secondary side core of the primary side core are not parallel, the deformation of the secondary side core, the primary core A non-contact power feeding device, wherein the secondary core is configured to be in surface contact . The secondary core
A core body,
The non-contact power feeding device according to claim 8, further comprising a diaphragm portion that supports the core main body portion so as to be movable in a contact / separation direction of the primary side core and the secondary side core. The secondary core
A core body,
The contactless power feeding device according to claim 8, further comprising: a bellows portion that supports the core main body portion so as to be movable in a contact / separation direction of the primary side core and the secondary side core. A primary housing;
A primary coil provided in the primary housing;
A primary core having a protruding portion that passes through the primary side coil and protrudes toward the inside of the through hole provided in the primary side housing;
A secondary housing,
A secondary coil provided in the secondary housing;
A secondary side core having a protruding portion that passes through the secondary side coil and protrudes toward the inside of the through hole provided in the secondary side housing;
With
A non-contact power feeding device that supplies power from the primary side to the secondary side in a state where the primary side core and the secondary side core are in contact with each other,
The secondary core is made of a soft magnetic material made of rubber in which a soft magnetic material is dispersed, a soft magnetic material made of a resin in which a soft magnetic material is dispersed, or a mixed material of rubber and resin in which a soft magnetic material is dispersed. It is constituted by comprising a soft magnetic material, provided with a seal portion for blocking the route to the interior of the secondary side housing through a through hole provided externally of the secondary-side housing on the secondary side housing Even if the contact side surface of the primary side core and the contact side surface of the secondary side core are not parallel, the primary side core and the secondary side core can be brought into surface contact by deformation of the secondary side core. It is comprised in the non-contact electric power feeder characterized by the above-mentioned.   The cover part which covers the surface on the opposite side to the surface facing the inner surface of the secondary side housing | casing in a secondary side coil in a secondary side coil is provided. Non-contact power feeding device.   The cover member made of a soft magnetic material is provided, which covers a surface on the opposite side of the surface facing the inner surface of the secondary side casing in the secondary side coil. Non-contact power feeding device. The seal portion is configured by a convex portion that is in close contact with the inner surface of the secondary housing,
The cover member is made of a material having higher rigidity than the secondary side core, and the secondary side core is pressed into the inner side surface of the secondary side casing in the secondary side casing. The contactless power feeding device according to claim 13, wherein the contactless power feeding device is positioned. A primary housing;
A primary coil provided in the primary housing;
A primary core having a protruding portion that passes through the primary side coil and protrudes toward the inside of the through hole provided in the primary side housing;
A secondary housing,
A secondary coil provided in the secondary housing;
A secondary side core having a protruding portion that passes through the secondary side coil and protrudes toward the inside of the through hole provided in the secondary side housing;
With
In condition like is brought into contact with the primary core and the secondary side core, a non-contact power feeding device supplies electric power from the primary side to the secondary side,
The primary core is made of a soft magnetic material made of rubber in which a soft magnetic material is dispersed, a soft magnetic material made of resin in which a soft magnetic material is dispersed, or a mixed material of rubber and resin in which a soft magnetic material is dispersed. The primary side core is composed of a soft magnetic body , and includes a seal portion that blocks a path from the outside of the primary side casing to the inside of the primary side casing through a through hole provided in the primary side casing. Contact
Even if the side surface and the contact side surface of the secondary core are in contact with each other, the primary side core and the secondary side core can be brought into surface contact by deformation of the primary side core ,
A cover member made of a soft magnetic material is provided to cover a surface opposite to the surface facing the inner surface of the primary side casing in the primary side coil,
The seal portion is configured by a convex portion that is in close contact with the inner surface of the primary housing,
The cover member is made of a material having higher rigidity than the primary side core, and is positioned in the primary side casing in a state where the primary side core is pressed toward the inner surface of the primary side casing. The non-contact electric power feeder characterized by the above-mentioned. A primary housing;
A primary coil provided in the primary housing;
A primary core having a protruding portion that passes through the primary side coil and protrudes toward the inside of the through hole provided in the primary side housing;
A secondary housing,
A secondary coil provided in the secondary housing;
A secondary side core having a protruding portion that passes through the secondary side coil and protrudes toward the inside of the through hole provided in the secondary side housing;
With
In a state where the primary core and the secondary side core was proximity to a contactless power supply apparatus for supplying electric power from the primary side to the secondary side,
The primary core is made of a soft magnetic material made of rubber in which a soft magnetic material is dispersed, a soft magnetic material made of resin in which a soft magnetic material is dispersed, or a mixed material of rubber and resin in which a soft magnetic material is dispersed. It is composed of a soft magnetic body, and includes a seal portion that blocks a path from the outside of the primary side casing to the inside of the primary side casing through a through hole provided in the primary side casing,
A cover member made of a soft magnetic material is provided to cover a surface opposite to the surface facing the inner surface of the primary side casing in the primary side coil,
The seal portion is configured by a convex portion that is in close contact with the inner surface of the primary housing,
The cover member is made of a material having higher rigidity than the primary side core, and is positioned in the primary side casing in a state where the primary side core is pressed toward the inner surface of the primary side casing. The non-contact electric power feeder characterized by the above-mentioned. A primary housing;
A primary coil provided in the primary housing;
A primary core having a protruding portion that passes through the primary side coil and protrudes toward the inside of the through hole provided in the primary side housing;
A secondary housing,
A secondary coil provided in the secondary housing;
A secondary side core having a protruding portion that passes through the secondary side coil and protrudes toward the inside of the through hole provided in the secondary side housing;
With
In condition like is brought into contact with the primary core and the secondary side core, a non-contact power feeding device supplies electric power from the primary side to the secondary side,
The secondary core is made of a soft magnetic material made of rubber in which a soft magnetic material is dispersed, a soft magnetic material made of a resin in which a soft magnetic material is dispersed, or a mixed material of rubber and resin in which a soft magnetic material is dispersed. Comprising a seal part that blocks a path from the outside of the secondary side housing to the inside of the secondary side case through a through hole provided in the secondary side case , And even if the contact side surface of the primary side core and the contact side surface of the secondary side core are not parallel, the primary side core and the secondary side core can be brought into surface contact by deformation of the secondary side core. And
A cover member made of a soft magnetic material is provided to cover the surface on the opposite side of the surface facing the inner surface of the secondary casing in the secondary coil,
The seal portion is configured by a convex portion that is in close contact with the inner surface of the secondary housing,
The cover member is made of a material having higher rigidity than the secondary side core, and the secondary side core is pressed into the inner side surface of the secondary side casing in the secondary side casing. A non-contact power feeding device that is positioned. A primary housing;
A primary coil provided in the primary housing;
A primary core having a protruding portion that passes through the primary side coil and protrudes toward the inside of the through hole provided in the primary side housing;
A secondary housing,
A secondary coil provided in the secondary housing;
A secondary side core having a protruding portion that passes through the secondary side coil and protrudes toward the inside of the through hole provided in the secondary side housing;
With
In a state where the primary core and the secondary side core was proximity to a contactless power supply apparatus for supplying electric power from the primary side to the secondary side,
The secondary core is made of a soft magnetic material made of rubber in which a soft magnetic material is dispersed, a soft magnetic material made of a resin in which a soft magnetic material is dispersed, or a mixed material of rubber and resin in which a soft magnetic material is dispersed. And a seal portion for blocking a path from the outside of the secondary side casing to the inside of the secondary side casing through a through hole provided in the secondary side casing. ,
A cover member made of a soft magnetic material is provided to cover the surface on the opposite side of the surface facing the inner surface of the secondary casing in the secondary coil,
The seal portion is configured by a convex portion that is in close contact with the inner surface of the secondary housing,
The cover member is made of a material having higher rigidity than the secondary side core, and the secondary side core is pressed into the inner side surface of the secondary side casing in the secondary side casing. A non-contact power feeding device that is positioned.

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