This application is based on and claims priority from Japanese Patent Applications No. 2017-114915 filed on Jun. 12, 2017, the entire contents of which are incorporated herein by reference.
The present invention relates to a shield shell on which a shield member is mounted, and a shield connector including the shield shell.
JP-A-2013-239276 discloses a shield shell and a shield connector.
In a structure disclosed in FIG. 2 of JP-A-2013-239276, an inverter-side connection portion 18 and a battery-side connection portion 19 correspond to the shield connector. The inverter-side connection portion 18 and the battery-side connection portion 19 are fixed to a shield case (not illustrated). Each of the inverter-side connection portion 18 and the battery-side connection portion 19 includes a shield shell 25, a ring crimp member 26, and a terminal fitting (not illustrated) that is provided on a terminal of a conduction path 15.
The shield shell 25 includes a cylindrical connection portion 24 that is inserted into a terminal 23 of a cylindrical braid 16 (shield member). The ring crimp member 26 is a member for connecting the terminal 23 of the cylindrical braid 16 to the cylindrical connection portion 24 by being crimped, and is formed to be inserted to the outside of the terminal 23 of the cylindrical braid 16.
In the crimp connection between the terminal 23 of the cylindrical braid 16 and the cylindrical connection portion 24, recessed deformities 27 illustrated in FIGS. 2 to 4 of JP-A-2013-239276 are formed by crimping the ring crimp member 26, and the terminal 23 of the cylindrical braid 16 is pressed against the cylindrical connection portion 24 by the recessed deformities 27, thereby completing an electrical connection.
However, according to the structure, in a case where a recessed deformity is formed by crimping a crimp member, when a force with which a terminal of a shield member (corresponding to the cylindrical braid 16 in JP-A-2013-239276) is pressed against a shield member mounting portion (corresponding to the cylindrical connection portion 24 in JP-A-2013-239276) by the recessed deformity is low, a force with which the shield member is held in the shield member mounting portion may decrease.
In the above-described crimp connection state, in a case where the shield member is pulled in a direction in which the shield member is separated from the shield member mounting portion (hereinafter, referred to as “separation direction”), there is a problem in that the shield member may be removed from the shield member mounting portion.
One or more embodiments provide a shield shell that would prevent a shield member from being removed from a shield member mounting portion in a case where the shield member is pulled in a separation direction, and a shield connector including the shield shell.
In accordance with one or more embodiments, a shield shell includes a housing accommodation portion and a shield member mounting portion. The shield member mounting portion is formed to be continuous to the housing accommodation portion. A shield member fixing part is provided on an outer surface of the shield member mounting portion. The shield member fixing part has an inclined shape in which a cross-section taken along an axial direction of the shield member mounting portion expands outwards from a base end side of the shield member mounting portion toward an open end side of the shield member mounting portion.
Other aspects and advantages of the invention will be apparent from the following description and the appended claims.
Hereinafter, a shield shell and a shield connector according to an embodiment will be described with reference to
In the drawings, arrows represent respective directions of upper and lower sides, left and right sides, and front and rear sides (the respective directions of the arrows are exemplary).
In
The case 2 corresponds to “mounting target portion” in the claims and is formed of a conductive metal. The case 2 is, for example, a case of an inverter unit or a motor unit, and a grounded circuit is provided in the inverter unit or the motor unit. The case 2 is a shield case connected to the grounded circuit.
As illustrated in
First, the shield shell 3 will be described. The shield shell 3 illustrated in
As illustrated in
As illustrated in
In the embodiment, the shield member mounting portion 7 is formed in the above-described shape but is not limited thereto. In addition, the shield member mounting portion 7 is formed in a cylindrical shape in which a cross-section taken along a direction perpendicular to an axial direction of the shield member mounting portion 7 has an oval shape.
As illustrated in
The number of shield member fixing parts 12 disposed is not limited to the embodiment. In addition, for example, in addition to the configuration of the embodiment illustrated in
In addition, the configuration of the shield member fixing part 12 is not limited to the above-described configuration in which a plurality of shield member fixing parts 12 are formed. In addition, although not illustrated in the drawing, a configuration may also be employed in which the shield member fixing part 12 is formed in the entire area of the outer surface 11 of the shield member mounting portion 7.
As illustrated in
As illustrated in
As illustrated in
As illustrated in
In the embodiment, as illustrated in
By setting the height of the fastening position aligning portion 17 as described above, even in a case where the binding member 5 tries to move toward the base end 19 side of the shield member mounting portion 7 by vibration or the like being applied thereto, the end of the binding member 5 is in contact with the fastening position aligning portion 17. As a result, even in a case where the binding member 5 tries to move toward the base end 19 side, the fastening position aligning portion 17 maintains the state where the binding member 5 is fastened to the fastening position.
As illustrated in
As illustrated in
By forming the inclined portion 18 in the above-described shape, as illustrated in
As illustrated in
As illustrated in
Next, the housing will be described. Although not illustrated in the drawing, the housing is formed of an insulating synthetic resin material, and is formed so as to be accommodated in the housing accommodation portion 6 of the shield shell 3. The housing is formed such that the conduction path with terminals (not illustrated) can be accommodated therein.
Next, the conduction path with terminals will be described. Although not illustrated in the drawing, terminal fittings are connected to the terminals of the conduction path (for example, an electric wire, a cable and so on).
Next, the shield member 4 will be described. As illustrated in
In the embodiment, as described above, a braid is adopted as the shield member 4. However, the shield member 4 is not limited to a braid as long as it can shield electromagnetic waves. In addition, for example, a conductive metal foil or a member including the metal foil may be adopted.
Next, the binding member 5 will be described. As illustrated in
Next, the procedure of an assembly operation of the shield connector 1 will be described. First, although not illustrated in the drawing, the conduction path with terminals is accommodated in the housing. Next, the housing is accommodated in the housing accommodation portion 6 therein of the shield shell 3 illustrated in
Next, the shield member mounting portion 7 is covered with the shield member 4, and the outer side of the shield member 4 covering the shield member mounting portion 7 is fastened by the binding member 5. At this time, as illustrated in
Next, the procedure of a mounting operation of the shield connector 1 on the case 2 will be described. First, a part of the shield connector 1 illustrated in
Next, in a case where the shield member 4 is pulled in a direction (hereinafter, referred to as “separation direction”) in which the shield member 4 is separated from the shield member mounting portion 7, an action of the shield connector 1 adopting the shield shell 3 will be described with reference to
As illustrated in
In addition, as illustrated in
In addition, as illustrated in
Further, as illustrated in
The shield shell 3 according to the above-described embodiment may be replaced with a modification example illustrated in
In a shield shell 30 illustrated in
In the shield shell 30, since the inclined portion 31 is formed in the above-described shape, a frictional resistance of the surface of the inclined portion 31 increases. Therefore, even in a case where the shield member 4 (refer to
Instead of the shield shell 30 according to the above-described modification example, a shield shell in which the surface of the inclined portion 18 illustrated in
Next, an effect of the shield shells 3 or 30 and the shield connector 1 including the shield shell 3 or 30 will be described.
As described above with reference to
In addition, it is obvious that various modifications can be made within a range not departing from the scope of the present invention.
In accordance with embodiments, as shown in the drawings, a shield shell 30 includes a housing accommodation portion 6 and a shield member mounting portion 7. The shield member mounting portion 7 is formed to be continuous to the housing accommodation portion 6. A shield member fixing part 12 is provided on an outer surface of the shield member mounting portion 7. The shield member fixing part 12 has an inclined shape in which a cross-section taken along an axial direction of the shield member mounting portion 7 expands outwards from a base end side of the shield member mounting portion 7 toward an open end side of the shield member mounting portion 7.
In the shield shell, the shield member fixing part is formed in an inclined shape that extends outwards from the base end side of the shield member mounting portion toward the open end side of the shield member mounting portion. Therefore, the outer diameter of the shield member fixing part increases from the base end side of the shield member mounting portion toward the open end side of the shield member mounting portion. Regarding the shield member fixing part having the above-described configuration, in a state where the outer surface of the shield member mounting portion is covered with the shield member, the binding member is fastened so as to match the outer diameter of the shield member mounting portion on the base end side of the shield member mounting portion. As a result, the binding member does not exceed the portion of the shield member fixing part on the open end side of the shield member mounting portion. Thus, even in a case where the shield member is pulled in a direction hereinafter, referred to as “separation direction” in which the shield member is separated from the shield member mounting portion, the state where the shield member is held in the shield member mounting portion is maintained.
In addition, the outer diameter of the shield member fixing part increases from the base end side of the shield member mounting portion toward the open end side of the shield member mounting portion. Therefore, in a case where the shield member is pulled in the separation direction, the binding member tries to rise to the open end side of the shield member fixing part. As a result, as the shield member is pulled in the separation direction, a force with which the shield member is fastened by the binding member increases.
In accordance with the embodiments, the shield member mounting portion 7 may have a cross-section taken along a direction perpendicular to the axial direction of the shield member mounting portion 7 in an elliptical shape or an oval shape. A plurality of the shield member fixing parts 12 may be provided on the outer surface of the shield member mounting portion 7. At least one of the plurality of the shield member fixing parts 12 may be disposed on a long side portion 13, 14 of the shield member mounting portion 7.
In the shield shell having the above-described characteristics, the shield member fixing part is disposed to face the long side portions of the shield member mounting portion and thus is disposed in each of the pair of long side portions. Therefore, the force with which the shield member is held in the shield member mounting portion is higher than that, for example, in a case where the shield member fixing part is disposed only in the single long side portion of the shield member mounting portion. Accordingly, even in a case where the shield member is pulled in the separation direction, the state where the shield member is held in the shield member mounting portion is more reliably maintained.
In accordance with the embodiments, the shield member fixing part 12 may have a curved shape in which a cross-section taken along the axial direction of the shield member mounting portion is downwardly convex.
In the shield shell, the shield member fixing part is formed in a curved shape that is downwardly convex. Therefore, even in the substantially intermediate portion of the shield member fixing part, a difference in outer diameter from the open end side of the shield member fixing part increases as compared to an inclined shape that is formed linearly. As a result, even in a case where the shield member is pulled in the separation direction, the binding member is less likely to exceed the portion of the shield member fixing part on the open end side of the shield member mounting portion. Thus, the state where the shield member is held in the shield member mounting portion is more reliably maintained.
In accordance with embodiments, a shield connector includes the shield shell 30, the housing that is accommodated in the shield shell 30, a conduction path with a terminal that is accommodated in the housing, and the shield member 4 that is mounted on the shield member mounting portion 7 of the shield shell 30 by fastening of the binding member 5. The shield shell 30 includes a housing accommodation portion 6 and a shield member mounting portion 7. The shield member mounting portion 7 is formed to be continuous to the housing accommodation portion 6. A shield member fixing part 12 is provided on an outer surface of the shield member mounting portion 7. The shield member fixing part 12 has an inclined shape in which a cross-section taken along an axial direction of the shield member mounting portion 7 expands outwards from a base end side of the shield member mounting portion 7 toward an open end side of the shield member mounting portion 7.
According to the shield shell and the shield connector, the shield member would be prevented from being removed from the shield member mounting portion when the shield member is pulled in the separation direction.
Number | Date | Country | Kind |
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2017-114915 | Jun 2017 | JP | national |
Number | Name | Date | Kind |
---|---|---|---|
20090258540 | Kameyama | Oct 2009 | A1 |
20120003873 | Tsuchiya | Jan 2012 | A1 |
20130153292 | Adachi | Jun 2013 | A1 |
20150044912 | Hashimoto et al. | Feb 2015 | A1 |
20150155638 | Nagahashi | Jun 2015 | A1 |
20180072247 | Nakai | Mar 2018 | A1 |
20180358758 | Saito | Dec 2018 | A1 |
20180358759 | Sato | Dec 2018 | A1 |
Number | Date | Country |
---|---|---|
104348038 | Feb 2015 | CN |
107533887 | Jan 2018 | CN |
4-55763 | May 1992 | JP |
2013-239276 | Nov 2013 | JP |
2016-192317 | Nov 2016 | JP |
Entry |
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Japanese Office Action for the related Japanese Patent Application No. 2017-114915 dated May 14, 2019. |
Chinese Office Action for the related Chinese Patent Application No. 201810603166.0 dated Jul. 1, 2019. |
Number | Date | Country | |
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20180358759 A1 | Dec 2018 | US |