The present invention relates to a connector, particularly to a connector connected to a sheet type connection object having a flexible conductor exposed on at least one surface of the connection object.
In recent years, attention has been drawn to so-called smart clothes that can obtain user's biological data such as the heart rate and the body temperature only by being worn by the user. Such smart clothes have an electrode disposed at a measurement site, and when a wearable device serving as a measurement device is electrically connected to the electrode, biological data can be transmitted to the wearable device.
The electrode and the wearable device can be interconnected by, for instance, use of a connector connected to a flexible conductor drawn from the electrode.
As a connector of this type, for example, JP 2018-129244 A discloses a connector shown in
In this state, by pushing the base member 3 toward the housing 2, as shown in
In addition, as shown in
When a wearable device is fitted with the connector disclosed in JP 2018-129244 A, the wearable device can be connected to an electrode formed of a flexible conductor.
However, when the flexible conductor 1A is exposed on the rear surface of the flexible substrate 1, the connector of JP 2018-129244A is useless for electrically connecting the flexible conductor 1B to the contact 4, disadvantageously.
The present invention has been made to solve the foregoing problem and aims at providing a connector that enables to make an electrical connection of a contact to a flexible conductor of a connection object regardless of whether the flexible conductor is exposed on the front surface or the rear surface of the connection object.
A connector according to the present invention comprises:
Embodiments of the present invention are described below based on the accompanying drawings.
The four plug contacts 13 are disposed to project perpendicularly to the sheet type conductive member 15 in two lines parallel to each other.
For convenience, the reinforcement sheet 14 and the sheet type conductive member 15 are defined as extending along an XY plane, the direction in which the four plug contacts 13 are aligned is referred to as “Y direction,” and the direction in which the four plug contacts 13 project is referred to as “+Z direction.” The Z direction is a fitting direction in which the connector 11 is fitted to a counter connector.
The reinforcement sheet 14 is disposed on the −Z direction side of the top insulator 16, the four plug contacts 13 are disposed on the −Z direction side of the reinforcement sheet 14, and the sheet type conductive member 15 is disposed on the −Z direction side of the four plug contacts 13. Further, a single inner contact 18 is disposed on the −Z direction side of the sheet type conductive member 15, and the bottom insulator 17 is disposed on the −Z direction side of the inner contact 18. The inner contact 18 corresponds to, of the four plug contacts 13, one plug contact 13 that is situated on the −X direction side and the −Y direction side.
As shown in
As shown in
In addition, the flat plate portion 17A is provided with a plurality of through-holes 17E separately corresponding to the plurality of bosses 16C of the top insulator 16.
As shown in
The projections 17D formed in the other three recessed portions 17B have the same structure as that of the projection 17C except that each of the projections 17D does not have the pair of grooves 17F.
The four plug contacts 13 are each made of a conductive material such as metal, and are to be connected to corresponding contacts of a counter connector (not shown) when part of the counter connector is accommodated in the recessed portion 16A of the top insulator 16.
As shown in
Of the four plug contacts 13, one plug contact 13 situated on the −X direction side and the −Y direction side is connected to a ground potential and used as a shield terminal, and the remaining three plug contacts 13 are each used as a signal terminal for transmitting an electric signal.
As shown in
As shown in
In the region R1 on which the plug contact 13 serving as a shield terminal is to be arranged, the insulating layer 15E is removed so that the shield layer 15D is exposed toward the +Z direction. In each of the regions R2 on which the three plug contacts 13 serving as signal terminals are to be arranged, the insulating layer 15E, the shield layer 15D, and the insulating layer 15C are removed so that the signal wiring layer 15B is exposed toward the +Z direction. In the other region than the regions R1 and R2, the insulating layer 15E is exposed.
In all the regions R1 and R2, a plurality of cuts 15J are formed to penetrate the sheet type conductive member 15 in the Z direction.
Since the cuts 15J penetrate the sheet type conductive member 15 in the Z direction, as shown in
On the rear surface, facing in the −Z direction, of the sheet type conductive member 15, only at the position corresponding to the region R1, the insulating layer 15G is removed so that the shield layer 15F is exposed, and in the other regions than the region R1, the insulating layer 15G is exposed.
In addition, a plurality of through-holes 15K separately corresponding to the plurality of bosses 16C of the top insulator 16 are formed at the periphery of the sheet type conductive member 15.
As shown in
A first oblique portion 18D and a second oblique portion 18E are joined to −Y and +Y directional end portions of the horizontal portion 18A via a first bent portion 18B and a second bent portion 18C, respectively. The first oblique portion 18D linearly extends from the first bent portion 18B toward the +Y direction and the −Z direction, while the second oblique portion 18E linearly extends from the second bent portion 18C toward the −Y direction and the −Z direction, and these first and second oblique portions 18D and 18E extend obliquely with respect to the fitting axis C while intersecting each other.
Further, a first extending portion 18H and a second extending portion 18J are joined to a tip of the first oblique portion 18D and a tip of the second oblique portion 18E via a third bent portion 18F and a fourth bent portion 18G, respectively. The first extending portion 18H and the second extending portion 18J face each other in the Y direction across the fitting axis C and extend obliquely with respect to the fitting axis C such that the distance therebetween in the Y direction decreases toward the −Z direction.
Outer surfaces, facing in opposite directions from each other, of the first bent portion 18B and the second bent portion 18C form a pair of contact portions P1, and outer surfaces, facing in opposite directions from each other, of the third bent portion 18F and the fourth bent portion 18G form a pair of pressing portions P2.
A distance in the Y direction between the pair of contact portions P1 is set to be slightly larger than an inside diameter of the part of the recessed portion 13C with which the pair of contact portions P1 make contact when the inner contact 18 is inserted into the recessed portion 13C of the plug contact 13.
Therefore, when the inner contact 18 is inserted into the recessed portion 13C of the plug contact 13, the pair of contact portions P1 come into contact with an inner surface of the recessed portion 13C with predetermined contact pressure while being elastically displaced in a direction toward the fitting axis C.
In addition, a distance in the Y direction between the pair of pressing portions P2 is set to be slightly larger than a value obtained by subtracting a double of the thickness of the sheet type conductive member 15 from the inside diameter of the part of the recessed portion 13C with which the pair of pressing portions P2 make contact when the inner contact 18 is inserted into the recessed portion 13C of the plug contact 13.
Therefore, when the inner contact 18 is inserted into the recessed portion 13C of the plug contact 13 while pushing the sheet type conductive member 15 thereinto, the pair of pressing portions P2 is elastically displaced in the direction toward the fitting axis C and presses the sheet type conductive member 15 against the inner surface of the recessed portion 13C with predetermined contact pressure.
As shown in
The four contact through-holes 16B of the top insulator 16, the four plug contacts 13, the four contact arrangement regions 15H of the sheet type conductive member 15, and the four recessed portions 17B of the bottom insulator 17 are arranged so as to align with each other in the Z direction.
The inner contact 18 is arranged so as to align in the Z direction with, of the four contact arrangement regions 15H of the sheet type conductive member 15, the contact arrangement region 15H that forms the region R1 and is situated on the −X direction side and the −Y direction side, and with, of the four recessed portions 17B of the bottom insulator 17, the recessed portion 17B in which the projection 17C is formed and that is situated on the −X direction side and the −Y direction side.
In addition, the bosses 16C of the top insulator 16, the cutouts 14B of the reinforcement sheet 14, the through-holes 15K of the sheet type conductive member 15, and the through-holes 17E of the bottom insulator 17 are arranged so as to align with each other in the Z direction.
When the connector 11 is assembled, first, as shown in
Next, the bosses 16C of the top insulator 16 are separately inserted into the cutouts 14B of the reinforcement sheet 14. At this time, the four contact through-holes 16B of the top insulator 16 are situated within the opening portion 14A of the reinforcement sheet 14.
Further, the tubular portion 13A of each of the plug contacts 13 is inserted from the −Z direction into the corresponding one of the four contact through-holes 16B of the top insulator 16, and the bottom insulator 17 is pressed against the top insulator 16 in the +Z direction with the sheet type conductive member 15 being sandwiched therebetween.
At this time, the flange 13B of each of the plug contacts 13 is situated on the corresponding contact arrangement region 15H of the sheet type conductive member 15, the inner contact 18 retained on the projection 17C of the bottom insulator 17 is inserted into the recessed portion 13C of the corresponding plug contact 13 while pushing the region R1 of the sheet type conductive member 15 thereinto, and the three projections 17D of the bottom insulator 17 are separately inserted into the recessed portions 13C of the corresponding plug contacts 13 while pushing the regions R2 of the sheet type conductive member 15 thereinto.
Since the plurality of cuts 15J are formed in each of the four contact arrangement regions 15H of the sheet type conductive member 15, the inner contact 18 and the three projections 17D are each inserted into the recessed portion 13C of the plug contact 13 while opening the plurality of cuts 15J of the corresponding contact arrangement region 15H.
In addition, by pressing the bottom insulator 17 against the top insulator 16, the bosses 16C of the top insulator 16 sequentially penetrate the cutouts 14B of the reinforcement sheet 14, the through-holes 15K of the sheet type conductive member 15, and the through-holes 17E of the bottom insulator 17. Subsequently, the top insulator 16 and the bottom insulator 17 are fixed to each other through heat deformation of a tip of each of the plurality of bosses 17C projecting on the −Z direction side of the bottom insulator 17. Thus, the assembling operation of the connector 11 is completed.
It should be noted that the flange 13B of each of the plug contacts 13 is sandwiched between the top insulator 16 and the bottom insulator 17 so that the plug contacts 13 are fixed to the top insulator 16 and the bottom insulator 17.
As shown in
In addition, the sheet type conductive member 15 pushed into the recessed portion 13C of the plug contact 13 by the inner contact 18 is pressed against the inner surface of the recessed portion 13C of the plug contact 13 by the pair of pressing portions P2 of the inner contact 18.
Here, as shown in
Therefore, the shield layer 15D on the front surface of the sheet type conductive member 15 makes contact with the inner surface, facing in the Y direction, of the recessed portion 13C of the plug contact 13 with predetermined contact pressure, while the shield layer 15F on the rear surface of the sheet type conductive member 15 makes contact with the pressing portions P2 of the inner contact 18 with predetermined contact pressure.
Consequently, the shield layer 15D exposed on the front surface of the sheet type conductive member 15 is electrically connected to the plug contact 13 directly, while the shield layer 15F exposed on the rear surface of the sheet type conductive member 15 is electrically connected to plug contact 13 via the inner contact 18. That is, both the shield layers 15D and 15F are connected to the plug contact 13 used as a shield terminal.
At this time, since the projection 17C of the bottom insulator 17 on which the inner contact 18 is retained has a substantially regular hexagonal prism shape extending in the Z direction as shown in
It should be noted that the projection 17C is not limited to a substantially regular hexagonal prism shape, and may have a columnar shape, for instance.
Thus, with the connector 11, by using the inner contact 18, both the shield layer 15D and the shield layer 15F respectively disposed on the front surface side and the rear surface side of the sheet type conductive member 15 can be electrically connected to the single plug contact 13 arranged in the region R1.
On the other hand, of the four contact arrangement regions 15H laid out on the front surface of the sheet type conductive member 15, in the three regions R2 in which the three plug contacts 13 used as signal terminals are to be arranged, as shown in
It should be noted that predetermined patterning is applied to the signal wiring layer 15B, and the three plug contacts 13 arranged in the three regions R2 are separately connected to three wirings each formed of the signal wiring layer 15B and insulated from one another.
As shown in
While the reinforcement sheet 14 is disposed between the bottom insulator 17 and the top insulator 16 in the connector 11 of Embodiment 1, the reinforcement sheet 14 may be omitted when it is not necessary to reinforce a mounting object such as a garment to which the connector 11 is to be attached.
That is, the inner contact 28 includes the horizontal portion 18A, the first oblique portion 18D and the second oblique portion 18E joined to the −Y and +Y directional end portions of the horizontal portion 18A via the first bent portion 18B and the second bent portion 18C, respectively, and the first extending portion 28H and the second extending portion 28J are joined to the tip of the first oblique portion 18D and the tip of the second oblique portion 18E via the third bent portion 18F and the fourth bent portion 18G, respectively. As with the inner contact 18, the outer surfaces, facing in opposite directions to each other, of the first bent portion 18B and the second bent portion 18C form the pair of contact portions P1, while the outer surfaces, facing in opposite directions to each other, of the third bent portion 18F and the fourth bent portion 18G form the pair of pressing portions P2.
As with the inner contact 18 in Embodiment 1, this inner contact 28 can also be retained by the bottom insulator 17 by respectively inserting the first extending portion 28H and the second extending portion 28J into the pair of grooves 17F of the projection 17C shown in
Even when the inner contact 28 shown in
That is, the inner contact 38 includes the horizontal portion 18A, the first oblique portion 18D and the second oblique portion 18E joined to the −Y and +Y directional end portions of the horizontal portion 18A via the first bent portion 18B and the second bent portion 18C, respectively, and the first extending portion 38H and the second extending portion 38J are joined to the tip of the first oblique portion 18D and the tip of the second oblique portion 18E via the third bent portion 18F and the fourth bent portion 18G, respectively. Further, the first projecting portion 38K and the second projecting portion 38L are formed at the intermediate part of the first extending portion 38H and the intermediate part of the second extending portion 38L, respectively.
In the inner contact 38, the outer surfaces, facing in opposite directions to each other, of the first bent portion 18B and the second bent portion 18C form the pair of contact portions P1, while outer surfaces, facing in opposite directions to each other, of the first projecting portion 38K and the second projecting portion 38L form the pair of pressing portions P2.
As with the inner contact 18 in Embodiment 1, this inner contact 38 can also be retained by the bottom insulator 17 by respectively inserting the first extending portion 38H and the second extending portion 38J into the pair of grooves 17F of the projection 17C as shown in
When the inner contact 38 is inserted into the recessed portion 13C of the plug contact 13, as shown in
While the sheet type conductive member 15 is omitted in
Thus, even when the inner contact 38 shown in
A first extending portion 48C extending along the fitting axis C is joined to a +Y directional end portion of the horizontal portion 48A via a first bent portion 48B, and a first projecting portion 48D is formed at an intermediate part of the first extending portion 48C. In addition, a second extending portion 48E is joined to a −Y directional end portion of the horizontal portion 48A, and a third extending portion 48G is joined to a tip of the second extending portion 48E via a second bent portion 48F.
The first projecting portion 48D projects in the +Y direction to be separated away from the second extending portion 48E.
In addition, the second extending portion 48E is slightly inclined with respect to the fitting axis C to be separated away from the second extending portion 48C toward the −Z direction, while the third extending portion 48G is slightly inclined with respect to the fitting axis C to approach the first extending portion 48C toward the −Z direction.
An outer surface, facing in the +Y direction, of the first bent portion 48B forms a single contact portion P1, while an outer surface, facing in the +Y direction, of the first projecting portion 48D forms a single pressing portion P2. In this manner, the inner contact 48 does not have any portions intersecting each other unlike the inner contacts 18, 28, 38 in Embodiments 1 to 3, and has the only one contact portion P1 and the only one pressing portion P2.
As with the inner contact 18 in Embodiment 1, this inner contact 48 can also be retained by the bottom insulator 17 by respectively inserting the first extending portion 48C and the third extending portion 48G into the pair of grooves 17F of the projection 17C as shown in
When the inner contact 48 is inserted into the recessed portion 13C of the plug contact 13, the single contact portion P1 formed at the first bent portion 48B comes into contact with the inner surface on the +Y direction side of the recessed portion 13C of the plug contact 13 as shown in
While the sheet type conductive member 15 is omitted in
Thus, even when the inner contact 48 shown in
That is, the inner contact 58 includes a horizontal portion 58A disposed at a −Z directional end portion of the inner contact 58. The horizontal portion 58A extends in the Y direction across the fitting axis C and has opposite ends curved toward the +Z direction, and a first oblique portion 58D and a second oblique portion 58E are joined to −Y and +Y directional end portions of the horizontal portion 58A via a first bent portion 58B and a second bent portion 58C, respectively. The first oblique portion 58D linearly extends from the first bent portion 58B toward the +Y direction and the +Z direction, while the second oblique portion 58E linearly extends from the second bent portion 58C toward the −Y direction and the +Z direction, and these first and second oblique portions 58D and 58E extend obliquely with respect to the fitting axis C while intersecting each other.
Further, a first extending portion 58H and a second extending portion 58J are joined to a tip of the first oblique portion 58D and a tip of the second oblique portion 58E via a third bent portion 58F and a fourth bent portion 58G, respectively. The first extending portion 58H and the second extending portion 58J face each other in the Y direction across the fitting axis C and extend obliquely with respect to the fitting axis C such that the distance therebetween in the Y direction decreases toward the +Z direction, and the first extending portion 58H and the second extending portion 58J are disengaged from each other in the +Z direction.
Outer surfaces, facing in opposite directions to each other, of the third bent portion 58F and the fourth bent portion 58G form the pair of contact portions P1, while outer surfaces, facing in opposite directions to each other, of the first bent portion 58B and the second bent portion 58C form the pair of pressing portions P2.
That is, the bottom insulator 57 has the flat plate portion 17A provided with the four circular recessed portions 17B, and of the four recessed portions 17B, one recessed portion 17B situated on the −X direction side and −Y direction side is provided with the projection 57C projecting in the +Z direction, and the other three recessed portions 17B are separately provided with the three projections 17D projecting in the +Z direction.
As shown in
As shown in
When the inner contact 58 is inserted into the recessed portion 13C of the plug contact 13, as shown in
While the sheet type conductive member 15 is omitted in
Thus, even when the bottom insulator 57 shown in
Since in the inner contact 58 in Embodiment 5, the pair of contact portions P1 are respectively formed at the third bent portion 58F and the fourth bent portion 58G respectively joined to the first extending portion 58H and the second extending portion 58J disengaged from each other in the +Z direction, even when a dimension tolerance at the time of manufacturing the inner contact 58 varies, fluctuation in a contact force of the pair of contact portions P1 with respect to the inner surface of the recessed portion 13C of the plug contact 13 can be reduced.
The inner contacts 18, 28, 38, 48, 58 used in Embodiments 1 to 5 above can be easily produced at a low cost by, for example, performing a forming process on a metal wire, without requiring a complex production apparatus.
Also in the case where the sheet type conductive members 15 each serving as a connection object are different in thickness, the inner contacts 18, 28, 38, 48, 58 capable of corresponding to the sheet type conductive members 15 can be easily obtained only by adjusting the forming process.
While the plug contact 13 arranged in the region R1 of the sheet type conductive member 15 is connected to both the shield layer 15D and the shield layer 15F respectively exposed on the front surface side and the rear surface side of the sheet type conductive member 15 in Embodiments 1 to 5 above, only the shield layer 15F exposed on the rear surface side of the sheet type conductive member 15 may be connected to the plug contact 13 arranged in the region R1, for instance.
While the sheet type conductive member 15 used in Embodiments 1 to 5 above has the multilayer structure shown in
In addition, while the two conductive layers, i.e., the shield layer 15D and the shield layer 15F of the sheet type conductive member 15 are connected to the single plug contact 13 used as a shield terminal in Embodiments 1 to 5 above, the invention is not limited thereto, and three or more conductive layers may be connected to the single plug contact 13.
In addition, while the connector 11 according to Embodiments 1 to 5 above has the four plug contacts 13 including the contact used as a shield terminal and the contacts used as signal terminals, the invention is not limited to this number of plug contacts, and it suffices if the connector includes at least a single plug contact 13 electrically connected to a flexible conductor disposed on the front surface side or the rear surface side of the sheet body of the sheet type conductive member 15.
Number | Date | Country | Kind |
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2022-124627 | Aug 2022 | JP | national |