JP2015103771A - Noncontact connector, plug and receptacle used thereon - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a noncontact connector superior in waterproof performance capable of reliably transmitting electric power and signals.SOLUTION: Each of circuit boards 51 and 52 includes an electric power coil and a signal transmission coil formed thereon. Each of the circuit boards 51 and 52 is embedded in a flat portion 14 in a mounting concave 12 of the receptacle 11 and a mounting part 22 of the plug 21, and coils in a pair face each other in a non-contact manner. A lock claw 25 of an elastic lock lever 24 provided to a mounting part 22 of the plug 21 is engaged with a lock hole 16 formed in a barrel frame part 13 of the mounting concave 12. The mounting part 22 of the plug 21 is brought into elastic contact by a lock lever 24 which formed to expand outward in a direction of the coil of the receptacle 11 when inserted into the mounting concave 12 of the receptacle 11.

Description

  The present invention relates to a non-contact connector that transmits electric power and signals, and a plug and a receptacle used therefor.

  As shown in FIGS. 11A and 11B, the conventional connector has a plurality of male terminals 64 that enter the mounting recess 62 when the plug portion of the plug 63 is inserted into the mounting recess 62 of the receptacle 61. The contact portion 65 is inserted into the plurality of holes of the plug 63 and contacts and connects with the contact portion of the female terminal provided in the hole. A ring-shaped waterproof seal portion 66 is inserted around the bottom surface of the mounting recess 62, and when the plug 63 is inserted, the distal end portion of the plug portion comes into pressure contact with the inner periphery of the waterproof seal portion 66. The waterproof seal portion 66 prevents water from entering from the gap between the plug 63 and the receptacle 61.

  In addition, as prior art document information relevant to the invention of this application, for example, what is shown in Patent Document 1 is known.

Japanese Utility Model Publication No. 2-16577

  Such a conventional contact-type connector is likely to cause a gap between the waterproof seal part and the plug part due to deterioration of the waterproof seal over time or repeated attachment / detachment, resulting in a decrease in waterproofness or sliding wear of the contact part. There was a problem that poor contact occurred.

  The present invention provides a non-contact connector that has excellent waterproof properties and can reliably transmit power and signals.

  In order to achieve the above object, according to the present invention, a substrate having a coil is embedded in a housing of a plug and a receptacle, respectively, and the corresponding coils are opposed to each other in a non-contact manner, and the housing of the plug is a housing of the receptacle. The connector is elastically contacted in the direction of the coil of the receptacle in a state of being inserted into the receptacle.

  As described above, an object of the present invention is to provide a non-contact connector that is excellent in waterproofness and that can reliably transmit power and signals.

FIG. 2A-A front sectional view of the non-contact connector according to Embodiment 1 of the present invention. The perspective view of the non-contact connector in Embodiment 1 of this invention Assembly perspective view of a non-contact connector according to Embodiment 1 of the present invention Front sectional view of the plug in the non-mounted state in Embodiment 1 of the present invention Front sectional view of the receptacle according to the first embodiment of the present invention (A) Front sectional view of the non-contact connector provided with the step portion in the first embodiment of the present invention (b) Enlarged front sectional view of the region C of the non-contact connector (c) Perspective view of the plug of the non-contact connector (A) Top perspective view of the substrate in the first embodiment of the present invention (b) Bottom perspective view of the substrate The circuit block diagram of the control part in Embodiment 1 of this invention The perspective view of the non-contact connector in Embodiment 2 of this invention The perspective view of the plug in Embodiment 2 of this invention (A) Assembly perspective view of a conventional non-contact connector (b) Cross-sectional view of a receptacle of the non-contact connector

(Embodiment 1)
A non-contact connector according to Embodiment 1 of the present invention will be described.

  1 is a front cross-sectional view of the non-contact connector according to Embodiment 1 of the present invention, taken along line AA in FIG. 2, and FIG. 2 is a perspective view thereof.

  As shown in FIGS. 1 and 2, the non-contact connector 10 according to the first embodiment includes a plug 21 and a receptacle 11 into which the plug 21 is inserted.

  Substrates 51 and 52 each having a coil are embedded in the housing of the receptacle 11 and the plug 21. The non-contact connector 10 transmits electric power and signals in a non-contact manner by electromagnetic induction coupling or electromagnetic field coupling between corresponding coils provided on the substrates 51 and 52, respectively.

  FIGS. 7A and 7B are a top perspective view and a bottom perspective view, respectively, of the substrate 52 of the plug 21. As shown in FIG. 7, a power coil 53 and a signal coil 54 are disposed on the surface of the substrate 52 as coils. In a state where the housing of the plug 21 is inserted into the housing of the receptacle 11, the power coil 53 and the signal coil corresponding to the power coil 53 and the signal coil 54 of the plug 21 are opposed to the substrate 52 of the receptacle 11. It is arranged and is opposed substantially concentrically. A plurality of power coils and signal coils may be provided, or only one of them may be provided.

  The substrates 51 and 52 are integrally formed inside the housing of the receptacle 11 and the plug 21, respectively, by insert molding. Thus, by embedding the substrates 51 and 52 in the housing, the entire substrates 51 and 52 are covered with the molding resin constituting the housing, so that waterproofness can be secured. Further, since transmission can be performed in a non-contact manner, even if there is a gap between the housing of the receptacle 11 and the housing of the plug 21, it is possible to reliably transmit power and signals.

  The molding resin constituting the housing is preferably excellent in water resistance, and such resins include polyethylene (PE), polypropylene (PP), polyvinyl chloride resin (PVC), polyethersulfone (PES), polyphenylene. Examples thereof include sulfide (PPS) and polyether ether ketone (PEEK).

  As shown in FIGS. 1, 3, and 5, the housing of the receptacle 11 is provided with a mounting recess 12 that houses the housing of the plug 21. The body frame portion 13 of the mounting recess 12 is provided along the insertion direction, and is provided in a substantially rectangular shape in a cross section perpendicular to the insertion direction.

  The flat portion 14 of the trunk frame 13 is thicker than the portion of the trunk frame 13 facing the flat portion 14 in order to embed the substrate 51. A substrate 51 of the receptacle 11 is disposed near the inner peripheral surface of the mounting recess 12 in the flat portion 14 of the trunk frame portion 13.

  On the other hand, as shown in FIGS. 1, 3, and 4, the housing of the plug 21 has a lump-shaped mounting portion 22 housed in the mounting recess 12 and a hook-like shape protruding outward from the mounting recess 12. And a protrusion 23. As shown in FIG. 3, the mounting portion 22 has a substantially rectangular parallelepiped shape.

  A substrate 52 for the plug 21 is disposed on the mounting portion 22. The substrate 52 of the plug 21 faces the substrate 51 of the receptacle 11 in the vicinity and is disposed in the vicinity of the outer peripheral surface of the mounting portion 22 facing the substrate 51.

  Further, the protrusion 23 abuts against the flat portion 14 at the opening edge 19 of the mounting recess 12, so that the movement of the plug 21 in the insertion direction is restricted.

  The mounting portion 22 of the plug 21 is provided with a lock lever 24 as an elastic portion. The lock lever 24 is provided on the side opposite to the outer peripheral surface where the substrate 51 of the receptacle 11 and the substrate 52 of the plug 21 face each other.

  The lock lever 24 extends up and down with the distal end of the lock lever 24 as a fulcrum within a storage groove 26 provided in the groove portion of the mounting portion 22 with the tip of the lock lever 24 extending to the protrusion 23 of the plug 21.

  A rectangular lock hole 16 is provided in the body frame portion 13 of the receptacle 11, and the lock hole 16 passes through the body frame portion 13. The body frame portion 13 provided with the lock hole 16 faces the outer peripheral surface of the mounting portion 22 provided with the lock lever 24.

  As shown in FIGS. 3 and 5, the lever guide 17 of the receptacle 11 is constituted by rails provided in parallel. When the housing of the plug 21 is inserted into the housing of the receptacle 11, the lock lever 24 is guided by the lever guide 17, and the tapered lock claw 25 is engaged with the lock hole 16.

  FIG. 4 shows a non-mounted state before the plug 21 is inserted into the receptacle 11. 4 is a virtual line parallel to the outer peripheral surface of the plug 21 near the substrate 52 and parallel to the inner peripheral surface of the flat portion 14 of the receptacle 11 in the mounted state.

  As shown in FIG. 4, the lock lever 24 is provided so that the tip of the lock lever 24 spreads outward with respect to the line BB in the non-mounted state, and protrudes outward from the storage groove 26. Thereby, when the mounting portion 22 of the plug 21 is inserted into the mounting recess 12 of the receptacle 11, the elastic contact force by the lock lever 24 is increased, and the lock lever 24 urges the trunk frame portion 13 of the receptacle 11 so that the plug The housing 21 is elastically contacted in the direction of the coil of the receptacle 11.

  And the board | substrate 51 of the receptacle 11 and the board | substrate 52 of the plug 21 are opposingly arranged, and are provided in proximity | contact. Thereby, transmission between coils can be performed reliably.

  As shown in FIGS. 6A to 6C, a further protruding stepped portion 27 may be provided on the outer peripheral surface of the mounting portion 22 of the plug 21 where the substrates 51 and 52 face each other. The stepped portion 27 is provided on the mounting portion 22 where the substrates 51 and 52 face each other over the width direction of the mounting portion 22 on the outer peripheral surface, and is disposed to face the flat portion 14 on the opening edge 19 side. The

  Furthermore, when the stepped portion 27 is provided, a gap is formed between the insertion head portion of the mounting portion 22 of the plug 21 and the mounting recess 12, so that the insertion property of the plug 21 is improved.

  Further, when the housing of the plug 21 is inserted into the housing of the receptacle 11, the stepped portion 27 presses the lock lever 24 against the body frame portion 13 of the receptacle 11, so that the housing of the plug 21 is connected to the coil of the receptacle 11. The elastic force elastically contacting in the direction can be increased, and the relative position between the substrate 51 of the receptacle 11 and the substrate 52 of the plug 21 can be prevented from moving.

  When the stepped portion 27 is provided, the lock lever 24 may be provided parallel to the BB line, and the housing of the plug 21 can be elastically contacted in the direction of the coil of the receptacle 11.

  As shown in FIG. 7, a power coil 53 and a signal coil 54 are disposed on the substrate 52 in a direction orthogonal to the insertion direction of the plug 21. On the substrate 51 of the receptacle 11, the power coil and the signal coil are disposed on the left and right sides so as to face the power coil 53 and the signal coil 54 of the substrate 52.

  In addition, a pair of power transmission lines and a pair of signal transmission lines constituting the four cables 58 are connected to the control unit 56 through the through holes 57. The control unit 56 includes a power coil 53, a signal coil 54, and the like. Connected to. The control unit 56 is configured by an ASIC or the like and controls transmission between coils. Similarly, the control unit 55 of the receptacle 11 is connected to a power coil, a signal coil, and a cable.

  FIG. 8 shows a circuit block diagram of a control unit for the power coil and the signal coil. Here, the substrate A and the substrate B indicate either the substrate 51 or the substrate 52, respectively.

  As shown in FIG. 8, the power transmission circuit in the control unit transmits power by DCDC conversion. The power transmission circuit controls a driver composed of a switching element such as a MOSFET by inputting the high frequency of an oscillator whose gate oscillates at 10 MHz in the substrate A on the power supply side and outputting a rectangular 50 driver signal. The driver drives the power coil for power supply using the DC power source Vin. In the substrate B on the power receiving side, the voltage of the power coil for receiving power is rectified by a rectifier circuit, and further, the DC power source Vout is output via a stabilizing circuit of a switching regulator or a three-terminal regulator.

  The data communication circuit in the control unit transmits data by PWM communication. In the data communication circuit, on the substrate A, the input signal Din is pulse-modulated using PWM, and the pulse is detected on the substrate B side via the signal coil. Further, the detected pulse waveform is subjected to pulse demodulation, and the pulse width is converted into a voltage to generate an output signal Dout. Further, the data communication circuit of the substrate B is driven by the DC power supply Vout. The transmission method of the control unit is an example and is not limited to this.

  As described above, since the housing of the plug 21 is elastically contacted in the direction of the coil of the receptacle 11, the pair of power coils and the pair of signal coils provided on the substrates 51 and 52 are in relative positions. Can be fixed and placed close together. Therefore, power and signal transmission can be performed reliably.

  Further, the back portion 15 of the mounting recess 12 of the receptacle 11 faces the end portion of the plug 21 in the insertion direction of the housing. As shown in FIG. 1, the back portion 15 of the mounting recess 12 is provided thicker than the body frame portion 13 provided with the lock hole 16, and a component such as a high part used for the control portion 55 is provided in the back portion 15. At least a portion is embedded and disposed. Thereby, the flat part 14 of the trunk | drum frame part 13 can be made thin, and the non-contact connector 10 can be reduced in height and size. Similarly, in the plug 21, at least a part of a high part or the like used for the control unit 56 is embedded in the protrusion 23 of the plug 21. Thereby, the mounting part 22 can be made thin and the non-contact connector 10 can be reduced in height and size.

(Embodiment 2)
A non-contact connector according to Embodiment 2 of the present invention will be described.

  The non-contact connector of the second embodiment is the same as the first embodiment except that the elastic portion is provided in the receptacle instead of providing the elastic portion in the plug. Description of is omitted.

  9 is a perspective view of a non-contact connector according to Embodiment 2 of the present invention, and FIG. 10 is a perspective view of the plug.

  As shown in FIG. 9, the body frame portion 33 of the receptacle 31 is provided with a pair of spring portions 43 as elastic portions. The body frame part 33 provided with the spring part 43 is on the side opposite to the flat part of the body frame part 33 where the substrates 51 and 52 face each other.

  The spring portion 43 is formed in a tongue shape along the insertion direction so that the flat plate of the body frame portion 33 is cut out, and is formed in a taper shape so that the tip of the spring portion 43 becomes thin. Further, a projecting piece (not shown) that protrudes inside the mounting recess 32 is provided at the tip of the spring portion 43.

  As shown in FIG. 10, the engagement recess 44 is arranged in parallel on the outer peripheral surface of the mounting portion 42 of the plug 41 in a direction orthogonal to the insertion direction. Further, a guide groove 45 is provided at the center of the mounting portion 42 of the plug 41 along the insertion direction. The guide groove 45 is guided by a guide bar (not shown) provided in the center of the inner side of the body frame portion 33 along the insertion direction.

  The protruding portion of the spring portion 43 is fitted into the engaging recess 44 so that the spring portion 43 is bent outward from the body frame portion 33. As a result, the spring portion 43 biases the housing of the plug 41, and the housing of the plug 41 is elastically contacted in the direction of the coil of the receptacle 31. And the coil of the board | substrate 51 of the receptacle 31 and the coil of the board | substrate 52 of the plug 41 are fixed relative positions, and are provided close to each other.

  Note that the stepped portion 27 shown in the first embodiment may be provided in the mounting portion 42 of the plug 41.

  The non-contact connector of the present invention has excellent waterproof properties and can reliably transmit power and signals. This non-contact connector is a connector for connecting power and data communication cables in equipment such as vehicles, robots, surveillance cameras, broadcast cameras, doors, hinges of folding portable devices, etc., for underwater cables and underground cables It is useful as a connector.

DESCRIPTION OF SYMBOLS 10 Non-contact connector 11, 31 Receptacle 12, 32 Mounting recessed part 13, 33 Body frame part 14 Flat part 16 Lock hole 17 Lever guide 19 Opening edge part 21, 41 Plug 22, 42 Mounting part 23 Projection part 24 Lock lever 25 Lock claw 27 Stepped portion 43 Spring portion 44 Engaging recess 51, 52 Substrate 53 Power coil 54 Signal coil

Claims (11)

A substrate provided with a coil is embedded in the housing of the plug and the receptacle, respectively, and the coils corresponding to each other are opposed to each other in a non-contact manner,
The plug housing is a non-contact connector that is elastically contacted in the direction of the coil of the receptacle when the plug housing is inserted into the receptacle housing. A mounting portion of the plug housing is housed in a mounting recess of the receptacle housing,
The receptacle substrate is provided in a body frame portion along the insertion direction in the mounting recess,
The non-contact connector according to claim 1, wherein the plug substrate is provided in the vicinity of the outer peripheral surface of the mounting portion so as to face the receptacle substrate.   The non-elasticity according to claim 2, wherein an elastic portion is provided on a mounting portion of the plug that is opposite to an outer peripheral surface where the substrates face each other, and the plug is elastically contacted with the receptacle by the elastic portion. Contact connector.   The non-contact connector according to claim 3, wherein the lock lever of the elastic portion is provided so as to spread outward in a non-mounted state.   The elastic part is provided on a body frame part of the receptacle on the opposite side to the body frame part facing the substrates, and the plug is elastically contacted with the receptacle by the elastic part. Non-contact connector.   The non-contact connector according to claim 3, wherein a stepped portion is provided on an outer peripheral surface of the plug mounting portion where the substrates face each other.   The plug housing has a protrusion protruding outward from the mounting recess of the receptacle, and movement of the plug in the insertion direction is restricted by the protrusion contacting the opening edge of the mounting recess. The non-contact connector according to claim 2.   The non-contact connector according to claim 7, wherein at least a part of a control unit that controls transmission of the coil provided on the substrate of the plug is embedded in the protrusion.   The non-contact according to claim 2, wherein at least a part of a control part provided on the substrate of the receptacle is embedded in a back part of the mounting recess that faces an end part in the insertion direction of the plug housing. connector.   A plug used for the non-contact connector according to claim 1.   A receptacle used for the non-contact connector according to claim 1.

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