Right-angle connector and noise reduction member

Abstract

A right-angle connector is provided with: a first differential signal terminal (31) having a first portion (31a) and a second portion (31b) bent via a bent portion (31c), the first differential signal terminal (31) being distributed to be used for one of differential signals; a second differential signal terminal (32) having a first portion (32a) and a second portion (32b) bent via a bent portion (32c), the second differential signal terminal (32) being distributed to be used for the other of the differential signals, and having a shorter total length than the total length of the first differential signal terminal (31); a grounding terminal (33) having a first portion (33a) and a second portion (33b) bent via a bent portion (33c), the grounding terminal (33) being distributed to be grounded; and a first noise reduction member (40) that is interposed between a first portion (32a) of the second differential signal terminal (32) located on the bent portion (32b) side and a first portion (33a) of the ground terminal (33) located on the bent portion (33c) side, and that increases parasitic capacitance between the second differential signal terminal (32) and the ground terminal (33).

Description

Technical Field

[0001] The present disclosure relates to a right-angle connector having three terminals allocated as two signal terminals for differential signals and a ground terminal as a differential pair, and a noise reduction component mounted on the right-angle connector. Background Art

[0002] In an angled connector having a plurality of contacts having different lengths, Patent Document 1 discloses a connector that eliminates a propagation delay difference between contacts caused by a difference in the lengths of the contacts.

[0003] Patent document 1 shows the following connector: signal contacts, ground contacts, and signal contacts are arranged in three rows from the inside in the pin side shell, with the surface where the ground contacts are arranged as the boundary, so that the dielectric constant of the insulating material on the outside is smaller than the dielectric constant of the insulating material on the inside, and the insulating material is sealed in the connector.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 11-329635 Summary of the invention

[0007] Problems to be solved by the invention

[0008] Furthermore, the connector disclosed in Patent Document 1 needs to be manufactured in different types in order to seal the insulating material in the pin-side housing.

[0009] Furthermore, the distribution of differential signals of positive and negative signals to the terminals of the right-angle connector is not shown at all.

[0010] That is, when the terminals of the right-angle connector are assigned terminals for the positive signal and the negative signal of the differential signal, there is the following problem: due to the difference in length between the terminals for the positive signal and the terminals for the negative signal, the balance of the differential signal deteriorates, the conversion amount from the differential mode signal to the common mode noise becomes larger, and the radiation noise from the terminals increases.

[0011] At the same time, there is also the problem of external common mode noise being converted into differential mode signals, deteriorating noise immunity.

[0012] Patent Document 1 does not disclose a right-angle connector that allocates terminals for positive and negative signals of a differential signal, nor does it disclose problems or solutions.

[0013] The present disclosure is completed in view of the above-mentioned problems, and its purpose is to obtain the following right-angle connector, which has a first differential signal terminal allocated for one signal of the differential signal, a second differential signal terminal allocated for the other signal of the differential signal, and a grounding terminal allocated for grounding, wherein the degradation of the balance of the differential signal can be suppressed by a simple structure, and the radiation noise from the terminal can be suppressed.

[0014] Means for solving problems

[0015] The right-angle connector disclosed in the present invention comprises: a first signal terminal for differential signal, which has a first part and a second part bent through a bending portion, and is allocated for one signal in the differential signal; a second signal terminal for differential signal, which has a first part and a second part bent through a bending portion, and is allocated for the other signal in the differential signal, and the total length is shorter than the total length of the first signal terminal for differential signal; a grounding terminal, which has a first part and a second part bent through a bending portion, and is allocated for grounding; and a first noise reduction component, which is located between the first part of the second differential signal terminal on the bending portion side and the first part of the grounding terminal on the bending portion side, so as to increase the parasitic electrostatic capacitance between the second differential signal terminal and the grounding terminal.

[0016] Effects of the Invention

[0017] According to the present disclosure, in a right-angle connector having terminals allocated for differential signals, it is possible to suppress degradation of balance between positive and negative signals of the differential signals and suppress radiation noise from the positive and negative signal terminals. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 1 is a diagram showing the structure of the right-angle connector according to the first embodiment.

[0019] Figure 2 1 is a diagram showing the structure of a right-angle connector according to a second embodiment.

[0020] Figure 3 It is a cross-sectional view showing a noise reduction component of a right-angle connector according to a third embodiment. DETAILED DESCRIPTION

[0021] Implementation method 1.

[0022] according to Figure 1 The right-angle connector according to the first embodiment will be described.

[0023] The right-angle connector according to the first embodiment includes a metal shield 10 , a plurality of terminals 30 , and a first noise reduction member 40 .

[0024] The right-angle connector of Embodiment 1 is an example of a D-sub connector in which a plurality of terminals are arranged in two rows, an upper row and a lower row, from left to right. However, it can also be applied to a D-sub connector, an RJ45 connector, or a USB connector in three or four rows.

[0025] In short, as long as the right-angle connector has a first differential signal signal terminal 31 allocated for one signal in the differential signal, a second differential signal signal terminal 32 allocated for the other signal in the differential signal, and a grounding terminal 33 allocated for grounding among multiple terminals 30, embodiment 1 can be applied to any type of right-angle connector.

[0026] Figure 1 In order to explain the features of the right-angle connector of the first embodiment, only the first differential signal terminal 31 , the second differential signal terminal 32 , and the ground terminal 33 are shown as the plurality of terminals 30 , but other signal terminals may be provided.

[0027] The metal shield 10 includes a mounting plate 11 having a D-shaped opening at the center and a connector portion 12 having a fitting surface facing the opening of the mounting plate 11 .

[0028] The connector portion 12 is fitted with a connector portion of a cable, and a plurality of terminals 30 are connected to corresponding cables in the connector portion 12 .

[0029] The back surface of the mounting plate 11 contacts the inner surface of the housing of the electronic device. Figure 1 The mounting plate 11 is mounted to the housing of the electronic device by connector fixing screws 20 on both sides in the lateral direction as shown in the figure, thereby mounting the metal shield 10 on the housing of the electric device.

[0030] The connector portion 12 of the metal shield 10 protrudes to the outside of the housing of the electric device.

[0031] A substrate having a wiring layer formed thereon is housed in a casing of the electric device.

[0032] The wiring layer is formed on any of the front surface, the back surface, and the inner surface of the substrate.

[0033] Among the signal terminals for differential signals, the terminal 31 and the terminal 32 adjacent to the ground terminal 33 are sometimes allocated as the first differential signal terminal 31 and the second differential signal terminal 32 depending on the relationship with the ground terminal 33, the configuration of the cable, the relationship of the wiring layers of the substrate, etc.

[0034] The first differential signal terminal 31 and the second differential signal terminal 32 are signal terminals for either a positive signal or a negative signal of a differential signal.

[0035] As an example, it is assumed that the first differential signal terminal 31 is allocated for a positive signal and the second differential signal terminal 32 is allocated for a negative signal.

[0036] The first differential signal terminal 31 includes a first portion 31 a and a second portion 31 b bent via a bent portion 31 c .

[0037] The distal end of the first portion 31 a is electrically connected to a corresponding lead wire connected to the connector portion 12 .

[0038] The distal end of the first portion 31 a is held by a non-conductive terminal holding member in the connector portion 12 .

[0039] The first portion 31 a extends linearly from the terminal portion, protrudes from the opening of the mounting plate 11 of the metal shield 10 , and reaches the bent portion 31 c .

[0040] The second portion 31b is bent at a right angle at the bent portion 31c, and extends linearly from the bent portion 31c to reach the terminal end.

[0041] The terminal end of the second portion 31 b penetrates a corresponding wiring layer formed on the front surface of a substrate housed in the electronic device, and is electrically and mechanically connected to the corresponding wiring layer by solder.

[0042] In addition, although 31a is assumed to be the first portion and 31b is assumed to be the second portion, it is also possible to conversely assume that 31a is the second portion and 31b is assumed to be the first portion.

[0043] In addition, the bent portion 31c is a single point where the first portion 31a and the second portion 31b are bent at a right angle, but the first portion 31a and the second portion 31b may be bent at a right angle at two points.

[0044] When the first portion 31 a and the second portion 31 b are bent at right angles at two points, the area between the two points is a bent portion 31 c .

[0045] The second differential signal terminal 32 includes a first portion 32 a and a second portion 32 b bent via a bent portion 32 c .

[0046] The distal end of the first portion 32 a is electrically connected to a corresponding lead wire connected to the connector portion 12 .

[0047] The distal end of the first portion 32 a is held by a non-conductive terminal holding member in the connector portion 12 .

[0048] The first portion 32 a extends linearly from the terminal end portion, protrudes from the opening of the mounting plate 11 of the metal shield 10 , and reaches the bent portion 32 c .

[0049] The second portion 32b is bent at a right angle by the bent portion 32c, and extends linearly from the bent portion 32c to reach the terminal end.

[0050] The terminal end of the second portion 32b penetrates a corresponding wiring layer formed on the front surface of a substrate housed in the electronic device, and is electrically and mechanically connected to the corresponding wiring layer by solder.

[0051] In addition, although 32a is set as the first part and 32b is set as the second part, it is also possible to set 32a as the second part and 32b as the first part on the contrary.

[0052] In addition, the bent portion 32c is a single point where the first portion 32a and the second portion 32b are bent at a right angle, but the first portion 32a and the second portion 32b may be bent at a right angle at two points.

[0053] When the first portion 32a and the second portion 32b are bent at right angles at two points, the area between the two points is a bent portion 32c.

[0054] The ground terminal 33 includes a first portion 33 a and a second portion 33 b bent via a bent portion 33 c .

[0055] The terminal end of the first portion 33 a is connected to the connector portion 12 and grounded.

[0056] The distal end of the first portion 33 a is held by a non-conductive terminal holding member in the connector portion 12 .

[0057] The first portion 33 a extends linearly from the terminal end portion, protrudes from the opening of the mounting plate 11 of the metal shield 10 , and reaches the bent portion 33 c .

[0058] The second portion 33b is bent at a right angle by the bent portion 33c, and extends linearly from the bent portion 33c to reach the terminal end.

[0059] The terminal end of the second portion 33 b passes through a ground layer formed on the front surface of a substrate housed in the electronic device, and is electrically and mechanically connected to the ground layer by solder.

[0060] In addition, although 33a is set as the first part and 33b is set as the second part, it is also possible to set 33a as the second part and 33b as the first part on the contrary.

[0061] In addition, the bent portion 33c is a single point where the first portion 33a and the second portion 33b are bent at a right angle, but the first portion 33a and the second portion 33b may be bent at a right angle at two points.

[0062] When the first portion 33a and the second portion 33b are bent at right angles at two points, the area between the two points is a bent portion 33c.

[0063] The first differential signal terminals 31 are arranged in the upper row of the two columns, the second differential signal terminals 32 are arranged in the lower row of the two columns, and the grounding terminals 33 are arranged adjacent to the first differential signal terminals 31 in the upper row of the two columns.

[0064] That is, the first portion 31a of the first differential signal terminal 31, the first portion 32a of the second differential signal terminal 32, and the first portion 33a of the ground terminal 33 are located at the vertices of an equilateral triangle in the cross section of the surface parallel to the opening surface of the mounting board 11. In addition, there is a case where the triangle is not an equilateral triangle.

[0065] Furthermore, the second portion 31b of the first differential signal terminal 31, the second portion 32b of the second differential signal terminal 32, and the second portion 33b of the ground terminal 33 are located at the vertices of an equilateral triangle in a cross section of a surface parallel to a plane including the first portion 31a of the first differential signal terminal 31 and the first portion 33a of the ground terminal 33. In addition, there may be a case where the triangle is not an equilateral triangle.

[0066] Therefore, when the cross section is an equilateral triangle, the distance between the first portion 31a of the first differential signal terminal 31 and the first portion 33a of the ground terminal 33 is the same as the distance between the first portion 32a of the second differential signal terminal 32 and the first portion 33a of the ground terminal 33.

[0067] Similarly, when the cross section is an equilateral triangle, the distance between the second portion 31b of the first differential signal terminal 31 and the second portion 33b of the ground terminal 33 is the same as the distance between the second portion 32b of the second differential signal terminal 32 and the second portion 33b of the ground terminal 33.

[0068] In short, the distance between the first differential signal terminal 31 and the ground terminal 33 is made as equal as possible to the distance between the second differential signal terminal 32 and the ground terminal 33 to suppress degradation of the balance of the differential signal.

[0069] However, since the second differential signal terminal 32 is arranged below the first differential signal terminal 31, the first portion 32a of the second differential signal terminal 32 is shorter than the first portion 31a of the first differential signal terminal 31 at the portion reaching the bent portion 32c.

[0070] Furthermore, the second portion 32 b of the second differential signal terminal 32 is shorter than the second portion 31 b of the first differential signal terminal 31 at a portion reaching the bent portion 32 c .

[0071] As a result, the entire length of the second differential signal terminal 32 is shorter than the entire length of the first differential signal terminal 31 .

[0072] In addition, the portion of the first portion 32a of the second differential signal terminal 32 that reaches the bending portion 32c and the portion of the first portion 31a of the first differential signal terminal 31 that reaches the bending portion 31c, as well as the portion of the second portion 32b of the second differential signal terminal 32 that reaches the bending portion 32c and the portion of the second portion 31b of the first differential signal terminal 31 that reaches the bending portion 31c, are respectively referred to as portions where the lengths of the two terminals are different, that is, portions where the lengths of the two terminals differ.

[0073] When one signal of the differential signal flows through the first differential signal terminal 31 and the other signal of the differential signal flows through the second differential signal terminal 32 in a state where the total length of the second differential signal terminal 32 is shorter than the total length of the first differential signal terminal 31, the balance of the differential signal deteriorates, particularly in the portion where the length difference between the two terminals occurs, due to the difference in length between the first differential signal terminal 31 and the second differential signal terminal 32.

[0074] In other words, the parasitic capacitance between the second differential signal terminal 32 and the ground terminal 33 is smaller than the parasitic capacitance between the first differential signal terminal 31 and the ground terminal 33 , so the balance of the differential signal is deteriorated.

[0075] When the balance of the differential signal deteriorates, the amount of conversion from the differential mode signal to the common mode noise increases, and the radiation noise from the first differential signal terminal 31 and the second differential signal terminal 32 increases. At the same time, the external common mode noise is converted into the differential mode signal, and the noise resistance is deteriorated.

[0076] The right-angle connector of embodiment 1 has a first noise reduction component 40 to suppress the degradation of the balance of the differential signal caused by the different lengths of the first differential signal signal terminal 31 and the second differential signal signal terminal 32, especially the degradation of the balance of the differential signal at the portion where the lengths of the two terminals are different.

[0077] The first noise reduction member 40 is interposed between the first portion 32a of the second differential signal terminal 32 located on the bent portion 32c side and the first portion 33a of the ground terminal 33 located on the bent portion 33c side, and increases the parasitic electrostatic capacitance between the second differential signal terminal 32 and the ground terminal 33.

[0078] The first noise reduction member 40 is continuously interposed between the second portion 32 b of the second differential signal terminal 32 located on the bent portion 32 c side and the second portion 33 b of the ground terminal 33 located on the bent portion 33 c side.

[0079] The first noise reduction member 40 functions so that the parasitic capacitance between the second differential signal terminal 32 and the ground terminal 33 becomes equal to the parasitic capacitance between the first differential signal terminal 31 and the ground terminal 33 .

[0080] In particular, at the portion where the length of the second differential signal terminal 32 differs from that of the first differential signal terminal 31, the first noise reduction component 40 acts so that the parasitic electrostatic capacitance between the second differential signal terminal 32 and the ground terminal 33 is the same as the parasitic electrostatic capacitance between the first differential signal terminal 31 and the ground terminal 33, thereby suppressing the degradation of the balance of the differential signal.

[0081] As a result, it is possible to suppress an increase in radiation noise from the first differential signal terminal 31 and the second differential signal terminal 32 and a degradation in noise immunity.

[0082] The first noise reduction member 40 is provided between the second differential signal terminal 32 and the ground terminal 33 at the bent portion 32 c where the second differential signal terminal 32 and the first differential signal terminal 31 have a length difference.

[0083] The first noise reduction member 40 is, for example, a dielectric having a dielectric constant higher than that of air.

[0084] The first noise reduction member 40 makes the dielectric constant between the second differential signal terminal 32 and the ground terminal 33 different from, that is, higher than, the dielectric constant between the first differential signal terminal 31 and the ground terminal 33 .

[0085] Next, a specific structure of the first noise reduction member 40 will be exemplified.

[0086] The first noise reduction member 40 is a sponge-like material having a dielectric constant higher than that of air and is penetrated by the second differential signal terminals 32 and fixed to the second differential signal terminals 32 .

[0087] By using a sponge-like material as the first noise reduction component 40, after the first differential signal terminal 31, the second differential signal terminal 32 and the grounding terminal 33 are allocated in the right-angle connector, the second differential signal terminal 32 and the grounding terminal 33 can be passed through the sponge-like material and fixed at the positions of the bending portion 32c and the bending portion 33c.

[0088] Furthermore, the first noise reduction member 40 is made of a thermoplastic resin or a thermosetting resin fixed to the second differential signal terminal 32 .

[0089] By using a thermoplastic resin or a thermosetting resin as the first noise reduction component 40, after the first differential signal terminal 31, the second differential signal terminal 32 and the grounding terminal 33 are allocated in the right-angle connector, the thermoplastic resin or the thermosetting resin can be positioned and fixed between the bent portion 32c of the second differential signal terminal 32 and the bent portion 33c of the grounding terminal 33.

[0090] The first noise reduction component 40 is a dielectric. The first noise reduction component 40 as a dielectric is interposed between the bent portion 32c of the second differential signal signal terminal 32 and the bent portion 33c of the grounding terminal 33 through a noise reduction component retaining member such as a thermoplastic resin, a thermosetting resin or a rope, and is fixed to the bent portion 32c of the second differential signal signal terminal 32.

[0091] By using a noise reduction component holder to fix the first noise reduction component 40 to the bending portion 32c of the second differential signal signal terminal 32, the first noise reduction component 40 can be fixed to the bending portion 32c of the second differential signal signal terminal 32 after the first differential signal terminal 31, the second differential signal terminal 32 and the grounding terminal 33 are allocated in the right-angle connector.

[0092] In short, no matter which type of first noise reduction component 40 is used, the right-angle connector of embodiment 1 can install the first noise reduction component 40 after allocating the first differential signal signal terminal 31, the second differential signal signal terminal 32 and the grounding terminal 33 after the right-angle connector before the first noise reduction component 40 is installed is completed. Therefore, the right-angle connector before the first noise reduction component 40 is installed can be used as a standard product to install the first noise reduction component 40 on multiple right-angle connectors. Therefore, the working hours until the right-angle connector of embodiment 1 is completed can be reduced, and the manufacturing cost can be reduced.

[0093] As described above, the right-angle connector of embodiment 1 includes a first differential signal terminal 31 allocated for one signal of a differential signal, a second differential signal terminal 32 allocated for the other signal of the differential signal, and a grounding terminal 33 allocated for grounding, and a first noise reduction component 40 for increasing a parasitic electrostatic capacitance between the second differential signal terminal 32 and the grounding terminal 33 is provided at a first portion 32a located on the bending portion 32c side of the second differential signal terminal 32 whose total length is shorter than that of the first differential signal terminal 31, thereby suppressing the degradation of the balance of the differential signal flowing in the first differential signal terminal 31 and the second differential signal terminal 32.

[0094] As a result, it is possible to suppress an increase in radiation noise from the first differential signal terminal 31 and the second differential signal terminal 32 and a degradation in noise immunity.

[0095] In addition, the first noise reduction component 40 can be installed after the first differential signal signal terminal 31, the second differential signal signal terminal 32 and the grounding terminal 33 are allocated to the right-angle connector. Therefore, a variety of right-angle connectors before the first noise reduction component 40 is installed can be used as standard products. The right-angle connector of embodiment 1 can achieve a reduction in man-hours and a reduction in manufacturing costs.

[0096] In addition, the first noise reduction component 40 may be disposed between the first portion 32a of the second differential signal terminal 32 located on the bending portion 32c side and the first portion 33a of the grounding terminal 33 located on the bending portion 33c side, and between the second portion 32b of the second differential signal terminal 32 located on the bending portion 32c side and the second portion 33b of the grounding terminal 33 located on the bending portion 33c side.

[0097] Implementation method 2.

[0098] according to Figure 2 The right-angle connector according to the second embodiment will be described.

[0099] The first noise reduction component 40 of the right-angle connector of the first embodiment is continuously inserted from between the first portion 32a of the second differential signal terminal 32 located on the bending portion 32c side and the first portion 33a of the grounding terminal 33 located on the bending portion 33c side to between the second portion 32b of the second differential signal terminal 32 located on the bending portion 32c side and the second portion 33b of the grounding terminal 33 located on the bending portion 33c side. In contrast, the right-angle connector of the second embodiment is different in that It includes a first noise reduction component 41 and a second noise reduction component 42, wherein the first noise reduction component 41 is interposed between the first portion 32a of the second differential signal terminal 32 located on the bending portion 32c side and the first portion 33a of the grounding terminal 33 located on the bending portion 33c side, and the second noise reduction component 42 is interposed between the second portion 32b of the second differential signal terminal 32 located on the bending portion 32c side and the second portion 33b of the grounding terminal 33 located on the bending portion 33c side, and other aspects are the same.

[0100] in addition, Figure 2 In, with Figure 1 The same reference numerals indicate the same or corresponding parts.

[0101] Hereinafter, the first noise reduction member 41 and the second noise reduction member 42 will be mainly described.

[0102] The first noise reduction component 41 is interposed between the first portion 32a of the second differential signal terminal 32 located on the bent portion 32c side and the first portion 33a of the ground terminal 33 located on the bent portion 33c side, and increases the parasitic electrostatic capacitance between the second differential signal terminal 32 and the ground terminal 33.

[0103] At a portion where there is a difference in length between the first portion 32a of the second differential signal terminal 32 and the first portion 31a of the first differential signal terminal 31, one side of the first noise reduction component 41 is penetrated by the first portion 32a of the second differential signal terminal 32 located on the bending portion 32c side and fixed to the first portion 32a, and the other side of the first noise reduction component 41 is penetrated by the first portion 33a of the grounding terminal 33 located on the bending portion 33c side and fixed to the first portion 33a, thereby increasing the parasitic electrostatic capacitance between the first portion 32a of the second differential signal terminal 32 located on the bending portion 32c side and the first portion 33a of the grounding terminal 33 located on the bending portion 33c side.

[0104] The second noise reduction member 42 is interposed between the second portion 32b of the second differential signal terminal 32 located on the bent portion 32c side and the second portion 33b of the ground terminal 33 located on the bent portion 33c side, thereby increasing the parasitic electrostatic capacitance between the second differential signal terminal 32 and the ground terminal 33.

[0105] At a portion where there is a difference in length between the second portion 32b of the second differential signal terminal 32 and the second portion 31b of the first differential signal terminal 31, one side of the second noise reduction component 42 is penetrated by the second portion 32b of the second differential signal terminal 32 located on the bending portion 32c side and fixed to the second portion 32b, and the other side of the second noise reduction component 42 is penetrated by the second portion 33b of the grounding terminal 33 located on the bending portion 33c side and fixed to the second portion 33b, thereby increasing the parasitic electrostatic capacitance between the second portion 32b of the second differential signal terminal 32 located on the bending portion 32c side and the second portion 33b of the grounding terminal 33 located on the bending portion 33c side.

[0106] The first noise reduction member 41 and the second noise reduction member 42 function to make the parasitic capacitance between the second differential signal terminal 32 and the ground terminal 33 equal to the parasitic capacitance between the first differential signal terminal 31 and the ground terminal 33 .

[0107] In particular, at the portion where the length of the second differential signal terminal 32 differs from that of the first differential signal terminal 31, the first noise reduction component 41 and the second noise reduction component 42 act in a manner that makes the parasitic electrostatic capacitance between the second differential signal terminal 32 and the ground terminal 33 the same as the parasitic electrostatic capacitance between the first differential signal terminal 31 and the ground terminal 33, thereby suppressing the degradation of the balance of the differential signal.

[0108] As a result, it is possible to suppress an increase in radiation noise from the first differential signal terminal 31 and the second differential signal terminal 32 and a degradation in noise immunity.

[0109] Each of the first noise reduction member 41 and the second noise reduction member 42 is, for example, a dielectric having a dielectric constant higher than that of air.

[0110] Next, specific structures of the first noise reduction member 41 and the second noise reduction member 42 will be exemplified.

[0111] The first noise reduction member 41 and the second noise reduction member 42 are sponge-like materials having a dielectric constant higher than that of air and having second differential signal terminals 32 and ground terminals 33 passing through them on both sides and fixed to the second differential signal terminals 32 and ground terminals 33 .

[0112] Furthermore, the first noise reduction member 41 and the second noise reduction member 42 are each made of a thermoplastic resin or a thermosetting resin fixed to the second differential signal terminal 32 .

[0113] The first noise reduction component 41 and the second noise reduction component 42 use thermoplastic resin or thermosetting resin, respectively. Therefore, after the first differential signal terminal 31, the second differential signal terminal 32 and the grounding terminal 33 are allocated in the right-angle connector, the second differential signal terminal 32 and the grounding terminal 33 are penetrated by the thermoplastic resin or thermosetting resin on both sides and the thermoplastic resin or thermosetting resin is fixed to the second differential signal terminal 32 and the grounding terminal 33.

[0114] In summary, the first noise reduction component 41 and the second noise reduction component 42 of the right-angle connector of embodiment 2 are respectively sponge-like materials, thermoplastic resins or thermosetting resins. Therefore, after the right-angle connector before the first noise reduction component 41 and the second noise reduction component 42 are completed, the first noise reduction component 41 and the second noise reduction component 42 can be installed after the first differential signal signal terminal 31, the second differential signal signal terminal 32 and the grounding terminal 33 are allocated. Therefore, the right-angle connector before the first noise reduction component 41 and the second noise reduction component 42 are installed can be used as a standard product to install the first noise reduction component 41 and the second noise reduction component 42 on a variety of right-angle connectors. Therefore, the man-hours until the right-angle connector of embodiment 2 is completed can be reduced, and the manufacturing cost can be reduced.

[0115] As described above, the right-angle connector of the second embodiment includes a first differential signal terminal 31 allocated for one signal of the differential signal, a second differential signal terminal 32 allocated for the other signal of the differential signal, and a grounding terminal 33 allocated for grounding, and a first noise reduction component 41 is provided at the first portion 32a located on the bending portion 32c side of the second differential signal terminal 32 whose total length is shorter than that of the first differential signal terminal 31, and a second noise reduction component 42 is provided at the second portion 32b. By means of the first noise reduction component 41 and the second noise reduction component 42, the parasitic electrostatic capacitance between the second differential signal terminal 32 and the grounding terminal 33 is increased, thereby suppressing the degradation of the balance of the differential signal flowing in the first differential signal terminal 31 and the second differential signal terminal 32.

[0116] As a result, it is possible to suppress an increase in radiation noise from the first differential signal terminal 31 and the second differential signal terminal 32 and a degradation in noise immunity.

[0117] In addition, since the first noise reduction component 41 and the second noise reduction component 42 can be installed after the first differential signal signal terminal 31, the second differential signal signal terminal 32 and the grounding terminal 33 are allocated to the right-angle connector, a variety of right-angle connectors before the first noise reduction component 41 and the second noise reduction component 42 are installed can be used as standard products. The right-angle connector of embodiment 1 can achieve a reduction in man-hours and a reduction in manufacturing costs.

[0118] Implementation method 3.

[0119] according to Figure 3 A right-angle connector according to a third embodiment will be described.

[0120] Figure 3 1 is a cross-sectional view showing a noise reduction member 40 of a right-angle connector according to a third embodiment.

[0121] Figure 3 The noise reduction member 40 of the right angle connector according to the third embodiment shown can be applied to the first noise reduction member 40 of the right angle connector according to the first embodiment and the first noise reduction member 41 and the second noise reduction member 42 of the right angle connector according to the second embodiment.

[0122] Therefore, the noise reduction member 40 will be mainly described.

[0123] The noise reduction component 40 includes a non-conductive holding portion 40a having a first fixing portion 40a1 and a second fixing portion 40a2, and a noise reduction portion 40b embedded between the first fixing portion 40a1 and the second fixing portion 40a2 of the holding portion 40a and having a dielectric constant higher than that of air.

[0124] The noise reduction portion 40b is a dielectric that increases the parasitic electrostatic capacitance between the second differential signal terminal 32 and the grounding terminal 33 at a portion where a length difference occurs between the second differential signal terminal 32 and the first differential signal terminal 31, i.e., at least one of the first portion and the second portion located on the bending portion 32c side.

[0125] like Figure 3 As shown, the planar shape of the noise reduction portion 40b is a rectangle, and is formed as a straight line along the length direction of the first portion 32a or the second portion 32b of the signal terminal 32 for the second differential signal, or is formed in an L shape along the length direction of the first portion 32a and the second portion 32b of the signal terminal 32 for the second differential signal.

[0126] The holding portion 40a is formed of a material having a lower dielectric constant than the noise reduction portion 40b and being more flexible than the noise reduction portion 40b.

[0127] The holding portion 40a has a noise reduction portion 40b embedded in the center portion, and has a first fixing portion 40a1 and a second fixing portion 40a2 on both sides of the noise reduction portion 40b.

[0128] like Figure 3 As shown, the planar shape of the retaining portion 40a is an ellipse, which is formed as a straight line along the first part 32a or the second part 32b of the signal terminal 32 for the second differential signal in the length direction, or is formed in an L shape along the first part 32a and the second part 32b of the signal terminal 32 for the second differential signal in the length direction.

[0129] The first fixing portion 40a1 of the retaining portion 40a is a through hole, and the first fixing portion 40a1 is penetrated by the second differential signal terminal 32 at a portion where there is a difference in length between the first portion 32a of the second differential signal terminal 32 and the first portion 31a of the first differential signal terminal 31, and the retaining portion 40a is fixed to the second differential signal terminal 32 at the first fixing portion 40a1, for example, by an adhesive.

[0130] The position at which the first fixing portion 40a1 of the retaining portion 40a is fixed to the second differential signal signal terminal 32 is the first portion 32a of the second differential signal signal terminal 32 located on the bending portion 32c side or the second portion 32b located on the bending portion 32c side, or the first portion 32a located on the bending portion 32c side and the second portion 32b located on the bending portion 32c side.

[0131] The second fixing portion 40a2 of the retaining portion 40a is a through hole, and the second fixing portion 40a2 is penetrated by the grounding terminal 33 at a portion where there is a difference in length between the first portion 32a of the second differential signal terminal 32 and the first portion 31a of the first differential signal terminal 31, and the retaining portion 40a is fixed to the grounding terminal 33 at the second fixing portion 40a2, for example, by an adhesive.

[0132] The position at which the second fixing portion 40a2 of the retaining portion 40a is fixed to the grounding terminal 33 is the first portion 33a of the grounding terminal 33 located on the bending portion 33c side or the second portion 33b located on the bending portion 33c side, or the first portion 33a located on the bending portion 33c side and the second portion 33b located on the bending portion 33c side.

[0133] The noise reduction component 40 of the right-angle connector of embodiment 3 constructed as described above can increase the parasitic electrostatic capacitance between the second differential signal signal terminal 32 and the grounding terminal at the portion where there is a difference in length between the first portion 32a of the second differential signal signal terminal 32 and the first portion 31a of the first differential signal signal terminal 31, by means of the noise reduction portion 40b with a higher dielectric constant buried in the retaining portion 40a, thereby suppressing the degradation of the balance of the differential signal flowing through the first differential signal signal terminal 31 and the second differential signal signal terminal 32.

[0134] Moreover, the noise reduction component 40 of the right-angle connector of embodiment 3 can be installed and fixed to the second differential signal terminal 32 and the grounding terminal 33 at the portion where the length difference occurs between the first portion 32a of the second differential signal terminal 32 and the first portion 31a of the first differential signal terminal 31 through the flexible retaining portion 40a. Therefore, the noise reduction component 40 has excellent workability and is easy to install relative to the second differential signal terminal 32 and the grounding terminal 33.

[0135] Of course, when the noise reduction component 40 of the right-angle connector of embodiment 3 is applied to the first noise reduction component 40 of the right-angle connector of embodiment 1, and the first noise reduction component 41 and the second noise reduction component 42 of the right-angle connector of embodiment 2, the same effect as the right-angle connectors of embodiments 1 and 2 is achieved.

[0136] Furthermore, the various embodiments may be freely combined, arbitrary components of the various embodiments may be modified, or arbitrary components of the various embodiments may be omitted.

[0137] Industrial Applicability

[0138] The right-angle connector disclosed herein is suitable for high-speed transmission of differential signals between a cable and a substrate housed inside an electronic device housing, and is a right-angle connector used to electrically connect a wiring layer of a differential signal on the surface of a substrate housed inside an electronic device housing and a cable.

[0139] Description of symbols

[0140] 10: Metal shield; 11: Mounting plate; 12: Connector part; 20: Screws for fixing the connector; 30: Terminal; 31: Signal terminal for the first differential signal; 31a: First part; 31b: Second part; 31c: Bend portion; 32: Signal terminal for the second differential signal; 32a: First part; 32b: Second part; 32c: Bend portion; 33: Grounding terminal; 33a: First part; 33b: Second part; 33c: Bend portion; 40, 41: First noise reduction component; 42: Second noise reduction component; 40a: Holding part; 40a1: First fixing part; 40a2: Second fixing part; 40b: Noise reduction part.

Claims

1. A right-angle connector, wherein: The right-angle connector has: a first differential signal terminal having a first portion and a second portion bent via a bent portion and allocated for one of the differential signals; a second differential signal terminal having a first portion and a second portion bent via a bent portion, and allocated for the other signal of the differential signal, and having a total length shorter than that of the first differential signal terminal; A grounding terminal having a first portion and a second portion bent via a bent portion and allocated for grounding; as well as The first noise reduction component is interposed between the first portion of the second differential signal terminal located on the bent portion side and the first portion of the ground terminal located on the bent portion side, and increases parasitic electrostatic capacitance between the second differential signal terminal and the ground terminal.

2. The right-angle connector according to claim 1, wherein: The first noise reduction member is continuously interposed between a second portion of the second differential signal terminal located on the bent portion side and a second portion of the ground terminal located on the bent portion side.

3. The right angle connector according to claim 1, wherein: The right-angle connector has a second noise reduction component, which is located between the second portion of the second differential signal terminal located on the bending portion side and the second portion of the grounding terminal located on the bending portion side, thereby increasing the parasitic electrostatic capacitance between the second differential signal terminal and the grounding terminal.

4. The right-angle connector according to any one of claims 1 to 3, wherein: In the first differential signal terminal, the terminal end of the first portion is connected to the corresponding lead through the connector portion, and the terminal end of the second portion passes through the corresponding wiring layer formed on the substrate housed in the electronic device and is connected to the corresponding wiring layer. In the second differential signal terminal, the terminal portion of the first portion is connected to the corresponding lead through the connector portion, and the terminal portion of the second portion passes through a corresponding wiring layer formed on a substrate housed in the electronic device and is connected to the corresponding wiring layer. In the grounding terminal, the terminal end of the first portion is connected to the corresponding lead through the connector portion, and the terminal end of the second portion passes through the corresponding wiring layer formed on the substrate housed in the electronic device and is connected to the corresponding wiring layer.

5. The right-angle connector according to any one of claims 1 to 3, wherein: In the first differential signal terminal, the terminal end of the first portion passes through a corresponding wiring layer formed on a substrate housed in the electronic device and is connected to the corresponding wiring layer, and the terminal end of the second portion is connected to a corresponding lead through a connector portion. In the second differential signal terminal, the terminal end of the first portion passes through a corresponding wiring layer formed on a substrate housed in the electronic device and is connected to the corresponding wiring layer, and the terminal end of the second portion is connected to a corresponding lead through the connector portion. In the grounding terminal, the terminal end of the first part passes through a corresponding wiring layer formed on a substrate housed in the electronic device and is connected to the corresponding wiring layer, and the terminal end of the second part is connected to a corresponding lead through the connector part.

6. A right-angle connector, wherein: The right-angle connector has: a first differential signal terminal having a first portion and a second portion bent via a bent portion and allocated for one of the differential signals; a second differential signal terminal having a first portion and a second portion bent via a bent portion, and allocated for the other signal of the differential signal, and having a total length shorter than that of the first differential signal terminal; A grounding terminal having a first portion and a second portion bent via a bent portion and allocated for grounding; as well as The first noise reduction member is interposed between the first portion of the second differential signal terminal located on the bent portion side and the first portion of the ground terminal located on the bent portion side, and has a dielectric constant higher than that of air.

7. The right angle connector according to claim 6, wherein: The first noise reduction member is a sponge-like material that is penetrated by the second differential signal terminal and fixed to the second differential signal terminal.

8. The right angle connector according to claim 6, wherein: The first noise reduction member is a thermoplastic resin or a thermosetting resin fixed to the second differential signal terminal.

9. The right angle connector according to claim 6, wherein: The first noise reduction member is fixed to the second signal terminal for differential signals via a noise reduction member holder.

10. The right angle connector according to claim 6, wherein: The first noise reduction component comprises: a non-conductive holding portion having a first fixing portion fixed by the second differential signal signal terminal and a second fixing portion fixed by the grounding terminal; and a noise reduction portion embedded between the first fixing portion and the second fixing portion of the holding portion and having a dielectric constant higher than that of air.

11. The right angle connector according to any one of claims 6 to 10, wherein: The first noise reduction member is continuously interposed between a second portion of the second differential signal terminal located on the bent portion side and a second portion of the ground terminal located on the bent portion side.

12. The right angle connector according to any one of claims 6 to 10, wherein: The right-angle connector includes a second noise reduction member interposed between a second portion of the second differential signal terminal located on the bent portion side and a second portion of the ground terminal located on the bent portion side and having a dielectric constant higher than that of air.

13. The right angle connector according to any one of claims 6 to 10, wherein: In the first differential signal terminal, the terminal end of the first portion is connected to the corresponding lead through the connector portion, and the terminal end of the second portion passes through the corresponding wiring layer formed on the substrate housed in the electronic device and is connected to the corresponding wiring layer. In the second differential signal terminal, the terminal portion of the first portion is connected to the corresponding lead through the connector portion, and the terminal portion of the second portion passes through a corresponding wiring layer formed on a substrate housed in the electronic device and is connected to the corresponding wiring layer. In the grounding terminal, the terminal end of the first portion is connected to the corresponding lead through the connector portion, and the terminal end of the second portion passes through the corresponding wiring layer formed on the substrate housed in the electronic device and is connected to the corresponding wiring layer.

14. The right angle connector according to any one of claims 6 to 10, wherein: In the first differential signal terminal, the terminal end of the first portion passes through a corresponding wiring layer formed on a substrate housed in the electronic device and is connected to the corresponding wiring layer, and the terminal end of the second portion is connected to a corresponding lead through a connector portion. In the second differential signal terminal, the terminal end of the first portion passes through a corresponding wiring layer formed on a substrate housed in the electronic device and is connected to the corresponding wiring layer, and the terminal end of the second portion is connected to a corresponding lead through the connector portion. In the grounding terminal, the terminal end of the first part passes through a corresponding wiring layer formed on a substrate housed in the electronic device and is connected to the corresponding wiring layer, and the terminal end of the second part is connected to a corresponding lead through the connector part.

15. A noise reduction component mounted on a right-angle connector, the right-angle connector comprising: a first differential signal terminal having a first portion and a second portion bent via a bending portion and allocated for one signal in the differential signal; a second differential signal terminal having a first portion and a second portion bent via a bending portion and allocated for the other signal in the differential signal, the total length of which is shorter than the total length of the first differential signal terminal; and a grounding terminal having a first portion and a second portion bent via a bending portion and allocated for grounding, wherein: The noise reduction component comprises: a non-conductive holding portion having a first fixing portion through which the second differential signal terminal penetrates and is fixed, and a second fixing portion through which the ground terminal penetrates and is fixed; and The noise reduction portion is embedded between the first fixing portion and the second fixing portion of the holding portion and has a dielectric constant higher than that of air.

16. The noise reduction component according to claim 15, wherein: The holding portion is made of a material having a lower dielectric constant than that of the noise reduction portion and being more flexible than the noise reduction portion.

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