JP5367120B2 - connector - Google Patents

Description

  The present invention relates to a connector that is used by being mounted on an object to be connected such as a substrate and has a shell connected to a ground.

  An example of this type of connector is disclosed in Patent Document 1. As shown in FIG. 12, the connector of Patent Document 1 includes a housing whose upper portion projects rearward, a contact held by the housing below the projecting portion, and a shell that covers the housing. .

JP 2004-79375 A

  In the connector structure of Patent Document 1, there is a problem that noise generated inside the connector is easily radiated in a fitted state with the mating connector.

  Therefore, an object of the present invention is to provide a connector having a structure in which noise generated inside the connector is not easily radiated.

In order to solve the above-described problems, the present invention provides the first connector as
A connector having a fitting end with a mating connector at the front end and being mounted on a connection object having a connection portion,
A housing;
A contact having a terminal portion connected to the connection portion of the connection object, and a held portion held by the housing in a state where the terminal portion is positioned on the rear side of the housing;
A first upper plate portion that at least partially covers the housing; and a rear side and a lower side of the first upper plate portion that are positioned above the terminal portion and at least a part of the first upper plate portion And a shell having a second upper plate portion having a portion parallel to the connector.

Moreover, this invention is a 1st connector as a 2nd connector,
The shell includes a first back plate portion that connects a rear end of the first upper plate portion and a front end of the second upper plate portion, and the first lower plate from the rear end of the second upper plate portion toward the lower side. It has a second back plate portion extending in parallel with the one back plate portion, and two side plate portions each extending in an L shape from both side ends of the first upper plate portion, and has a two-step staircase shape. Provide a connector.

Moreover, this invention is a 2nd connector as a 3rd connector,
The front end of the first upper plate portion and the front end of the side plate portion provide a connector located on the front side of the front end of the contact.

Furthermore, the present invention is any one of the first to third connectors as the fourth connector,
The mating connector has a mating shell;
The shell is a connector assembled to the housing so that the lower surface of the second upper plate portion is located below the upper surface of the mating shell when the connector is fitted with the mating connector. I will provide a.

Furthermore, the present invention is a fourth connector as the fifth connector,
In a state where the connector is engaged with the mating connector, the distance between the mating shell and the front end of the second upper plate portion is between the upper surface of the mating shell and the first upper plate portion. Provide a connector that is less than half of the distance.

  According to the present invention, since the second upper plate portion, which is one step lower than the first upper plate portion and close to the contact side, is provided at the rear portion of the shell, the shell and the mating shell in the fitted state with the mating connector. The distance between can be reduced. This makes it difficult for noise generated inside the connector to be emitted.

  In addition, since the position of the second upper plate portion is lowered according to the terminal portion of the contact, the difference between the impedance on the mating connector side and the impedance on the connector side can be reduced, and signal reflection at the boundary is reduced. can do.

It is a perspective view which shows the connector by embodiment of this invention. It is side surface sectional drawing which shows the connector of FIG. 1 along the II-II line. It is a side view which shows the housing contained in the connector of FIG. It is a side view which shows the shell contained in the connector of FIG. The illustrated shell shows a state before being attached to the housing. It is an expanded sectional view which shows the area | region enclosed with the broken line (circle) in the connector of FIG. It is a perspective view which shows the other party connector of the connector of FIG. It is side surface sectional drawing which shows the other party connector of FIG. 6 along the VII--VII line. However, the coaxial cable is shown in a side view. It is a perspective view which shows the other party terminal assembly contained in the other party connector of FIG. It is sectional drawing which shows the combination of the connector of FIG. 2, and the other party connector of FIG. The connector and the mating connector are in a fitted state. However, the coaxial cable is shown in a side view. It is a perspective view which shows the modification of the connector of FIG. It is a perspective view which shows the other party connector corresponding to the connector of FIG. It is a cross-sectional perspective view which shows the connector of patent document 1.

  Referring to FIGS. 1 and 2, a connector 100 according to an embodiment of the present invention has a fitting end 102 at a front end (−X side end), and includes a contact 110 made of a conductor and an insulator. A housing 120 and a metal shell 140 are provided. The connector 100 is mounted and fixed on a circuit board (not shown) that is an object to be connected. A circuit board (not shown) is provided with a connection portion (not shown) electrically connected to a conductor pattern (not shown).

  As shown in FIG. 2, the contact 110 has an L shape, and a held portion 112 held by the housing 120 and a contact portion extending from the held portion 112 toward the fitting end 102. 114 and a terminal portion 116 that extends downward (+ Z direction) from the rear (+ X side) of the held portion 112. The terminal part 116 is a part connected to a connection part (not shown) of a circuit board (not shown).

  As shown in FIGS. 1 to 3, the housing 120 includes a receiving portion 122 that receives the mating connector 200 (see FIG. 6; described later), and a rear side portion 124 that extends rearward (+ X side) of the receiving portion 122. have. As can be understood from FIG. 1, the receiving portion 122 has a substantially square cylindrical cross section in a plane (YZ plane) orthogonal to the fitting direction (+ X direction). As best shown in FIG. 2, a rear wall 126 is provided at the rear end (+ X side end) of the receiving portion 122. The rear wall portion 126 is provided with a holding portion 128 including a hole penetrating the rear wall portion 126, and the held portion 112 of the contact 110 is held by the holding portion 128. As best shown in FIGS. 2 and 3, the side wall 130 located on both sides in the width direction (Y direction) of the receiving portion 122 has a large window 132 penetrating the side wall 130 in the width direction (Y direction). Is provided. As best shown in FIG. 3, the lower end (−Z side end) of the rear side portion 124 is flush with the lower end (−Z side end portion) of the receiving portion 122, but the upper end of the rear side portion 124. The (+ Z side end) is at a position lower than the upper end (+ Z side end) of the receiving portion 122 (positioned on the −Z side). In other words, the height (size in the Z direction) of the rear side portion 124 is lower than the height (size in the Z direction) of the receiving portion 122. In the present embodiment, a recess 134 is formed at the lower end (−Z side end) of the receiving portion 122, which is recessed in the width direction (Y direction) and upward (+ Z side). Similarly, a recess 136 that is recessed upward (+ Z side) is formed at the lower end (−Z side end) of the rear side portion 124.

  As shown in FIGS. 1, 2, and 4, the shell 140 is obtained by punching and pressing a single metal plate, and has a two-step staircase shape.

  Specifically, a first upper plate portion 142 that partially covers the upper surface of the receiving portion 122 of the housing 120, and extends downward (−Z direction) from the rear end (+ X side end portion) of the first upper plate portion 142. The first back plate portion 144, the second upper plate portion 146 extending from the lower end (−Z side end portion) of the first back plate portion 144 toward the rear (+ X direction), and the rear end of the second upper plate portion 146 A second back plate portion 148 extending from the (+ X side end portion) downward (−Z direction), and a surface orthogonal to the width direction (Y direction) from both side ends (Y direction both ends) of the first upper plate portion 142. It has two side plate portions 150 extending downward (−Z side) inside (in the XZ plane).

  As shown in FIG. 1, the first upper plate portion 142 according to the present embodiment extends in a horizontal plane (XY plane) orthogonal to the vertical direction (Z direction). As best shown in FIG. 2, the front end of the first upper plate portion 142 is positioned forward (−X side) with respect to the front end of the contact 110. That is, the distance in the front-rear direction (X direction) from the first upper plate portion 142 to the fitting end 102 is shorter than the distance in the front-rear direction (X direction) from the contact 110 to the fitting end 102. The second upper plate portion 146 is located on the upper side (+ Z side) of the terminal portion 116 of the contact 110, and is located on the rear side (+ X side) and lower side (−Z side) of the first upper plate portion 142. 1 extends in parallel with the upper plate portion 142. That is, the second upper plate portion 146 extends in the horizontal plane (XY plane). The first back plate portion 144 extends in a vertical plane (YZ plane) orthogonal to the fitting direction (X direction), and the rear end (+ X side end portion) of the first upper plate portion 142 and the second upper plate. The front end (−X side end) of the portion 146 is connected. The second back plate portion 148 extends in parallel with the first back plate portion 144. As shown in FIGS. 1 and 2, a mounting post 160 is provided at the lower end (−Z side end portion) of the second back plate portion 148. The mounting post 160 is a part used for mounting and fixing the connector 100 to a circuit board (not shown).

  As understood from FIGS. 1 and 2, the front end of the side plate portion 150 is located forward (−X side) with respect to the front end of the contact 110. That is, the distance in the front-rear direction (X direction) from the side plate portion 150 to the fitting end 102 is shorter than the distance in the front-rear direction (X direction) from the contact 110 to the fitting end 102.

  As understood from FIGS. 2 and 4, the side plate part 150 is provided so as to cover a part of the side wall part 130 of the receiving part 122 and the rear side part 124 from the outside in the width direction (Y direction). The side plate portion 150 has an L-shape having a step at the upper edge. As will be understood with reference to FIGS. 2 and 4, the step shape from the upper side (+ Z side) to the rear side (+ X side) of the side plate portion 150 is the first upper plate portion 142 and the first back plate portion 144. The step shape is substantially the same as the step shape formed by the cross sections of the second upper plate portion 146 and the second back plate portion 148.

  As shown in FIGS. 1, 2, and 4, a contact spring portion 152 is formed on the side plate portion 150. As shown in FIG. 2, the contact spring portion 152 is exposed in the receiving portion 122 through the window portion 132 of the side wall portion 130 in a state where the side plate portion 150 is attached to the housing 120.

  As shown in FIG. 1, a fixed portion 154, a fixed portion 156, and a mounting post 158 are provided at the lower end (−Z side end portion) of the side plate portion 150. As shown in FIG. 4, in a state before the shell 140 is attached to the housing 120, the fixing portion 154 extends downward (−Z side) from the vicinity of the front end of the side plate portion 150, and the fixing portion 156 The side plate portion 150 extends downward (−Z side) from a portion corresponding to the rear side portion 124. Specifically, the fixing portions 154 and 156 are provided corresponding to the concave portions 134 and 136 of the housing 120. The mounting post 158 is a part used for mounting and fixing the connector 100 to a circuit board (not shown).

  The shell 140 covers the rear side (+ X side) of the housing 120 and the terminal portion 116 of the contact 110 from the upper side (+ Z side) and the rear side (+ X side). Specifically, the shell 140 shown in FIG. 4 is put on the housing 120 holding the contact 110 (+ Z side), and the fixing portion 154 is bent into the concave portion 134 as shown in FIG. The shell 140 is attached to the housing 120 by bending it into the recess 136. Thereby, the shell 140 is held so as to hold the rear portion of the housing 120.

  As shown in FIGS. 6 and 7, the mating connector 200 according to the present embodiment includes a mating terminal assembly 210 and an external housing 220, and is connected to the coaxial cable 50. The coaxial cable 50 includes a center conductor 52, an insulator 54, an external conductor 56, and a jacket 58.

  7 and 8, the mating terminal assembly 210 includes a mating contact 212, an inner housing 214 that holds the mating contact 212, and a mating shell 216 that partially covers the inner housing 214. It has. The mating contact 212 is connected to the central conductor 52 of the coaxial cable 50 and is connected to the contact 110 when the connector 100 and the mating connector 200 are fitted. An insertion hole 215 that guides and connects the pin-shaped contact 110 to the mating contact 212 is provided at the tip of the inner housing 214. The mating shell 216 is connected to the external conductor 56 and is connected to the shell 140 when the connector 100 and the mating connector 200 are fitted.

  As shown in FIG. 7, the external housing 220 has a housing portion 221, and the mating terminal assembly 210 is housed in the housing portion 221. In this state, the insertion hole 215 is aligned with the insertion hole 222 provided in the outer housing 220, so that the pin-shaped contact 110 passes through the insertion hole 222 and the insertion hole 215 and the counterpart contact 212. Can be connected with.

  Also, as shown in FIG. 6, the counterpart shell 216 according to the present embodiment is partially exposed from the outer housing 220. In the fitting state between the connector 100 and the mating connector 200, the contact spring portion 152 of the shell 140 comes into contact with the exposed part of the mating shell 216, whereby the both are electrically connected.

  As shown in FIG. 9, in the present embodiment, when the connector 100 and the mating connector 200 are in the fitted state, the lower surface of the second upper plate portion 146 is located below the upper surface 218 of the mating shell 216. positioned. Specifically, the distance between the shell 140 and the mating shell 216 can be narrowed, and the noise generated inside the connector is less likely to be radiated. Furthermore, since the shell 140 is formed in a two-step staircase shape by the first upper plate portion 142 and the second upper plate portion 146, impedance mismatch due to the fitting between the connector 100 and the mating connector 200. Can be reduced, and deterioration of the signal waveform can be suppressed. In addition, in the present embodiment, in the fitted state between the connector 100 and the mating connector 200, the distance between the mating side end of the mating shell 216 and the front end of the second upper plate portion 146 is: The distance is less than half of the distance between the upper surface 218 of the mating shell 216 and the first upper plate portion 142. Since the gap between the shell 140 and the counterpart shell 216 can be reduced, noise generated inside the connector 100 is less likely to be radiated.

  In the above-described embodiment, the connector 100 has one contact 110 and the cable connected to the mating connector 200 is a coaxial cable. However, the present invention is not limited to this. There may be a plurality of contacts 110 and the cable may be of another type. Further, the structure of the mating connector 200 may be changed according to the cable.

  For example, referring to FIG. 10 and FIG. 11, the connector 100a and the mating connector 200a according to the modification have a structure in which the connector 100 and the mating connector 200 described above are enlarged in the width direction. In the following, only the changes will be described, and the description of the parts having the same structure and function as the connector 100 and the mating connector 200 according to the above-described embodiment will be omitted.

  As shown in FIG. 10, the connector 100a includes two contacts (not shown), a housing 120a that holds them, and a shell 140a that partially covers the housing 120a. The housing 120a has a receiving portion 122a that can receive the wide mating connector 200a from the fitting end 102a. Similar to the shell 140 described above, the shell 140a has a first upper plate portion 142a and a second upper plate portion 146a, and a terminal portion (not shown) of the rear portion of the housing 120a and a contact (not shown). ).

  The cable shown in FIG. 11 is a differential pair cable 50a and includes two signal lines (not shown). Two insertion holes 222 corresponding to these two signal lines (not shown) are provided in the external housing 220a of the mating connector 200a. As understood from the insertion hole 222, the mating connector 200a includes two mating contacts (not shown).

  The cross section in a state in which the connector 100a and the mating connector 200a are fitted is the same as that shown in FIG. 9, and the gap between the shell 140a and the mating shell 216 is small. Therefore, even if there are two contacts, noise generated in the connector 100a is not easily radiated to the outside.

  In the above-described embodiments and modifications, the second upper plate portions 146 and 146a are parallel to the first upper plate portions 142 and 142a, but the present invention is not limited to this. In particular, when the contact 110 is not L-shaped and the terminal portion 116 extends obliquely downward and rearward (in the direction toward the −Z side and the + X side) and then extends downward (−Z direction). For example, after extending the second upper plate portion 146 in parallel with the first upper plate portion 142, the second upper plate portion 146 extends obliquely downward and rearward, or directly extends from the end of the first upper plate portion 142 obliquely downward and rearward. That is, the second upper plate portion 146 may be deformed in accordance with it.

50 Coaxial cable 50a Differential pair cable 52 Center conductor 54 Insulator 56 Outer conductor 58 Outer jacket 100, 100a Connector 102, 102a Fitting end 110 Contact 112 Held part 114 Contact part 116 Terminal part 120, 120a Housing 122, 122a Receiving Part 124 rear side part 126 rear wall part 128 holding part 130 side wall part 132 window part 134,136 concave part 140,140a shell 142,142a first upper plate part 144 first back plate part 146,146a second upper plate part 148 second 2 Back plate portion 150 Side plate portion 152 Contact spring portion 154, 156 Fixed portion 158, 160 Mounting post 200, 200a Mating connector 210 Mating terminal assembly 212 Mating contact 214 Internal housing 215 Insertion hole 216 Mating shell 218 Top surface 2 0,220a outer housing 221 accommodating portion 222 insertion hole

Claims (4)

A connector having a fitting end with a mating connector at the front end and being mounted on a connection object having a connection portion,
A housing;
A contact having a terminal portion connected to the connection portion of the connection object, and a held portion held by the housing in a state where the terminal portion is positioned on the rear side of the housing;
A first upper plate portion that at least partially covers the housing; and a rear side and a lower side of the first upper plate portion that are positioned above the terminal portion and at least a part of the first upper plate portion A connector having a shell having a second upper plate portion provided with a portion parallel to the
The mating connector has a mating shell;
The shell is assembled to the housing so that the lower surface of the second upper plate portion is positioned below the upper surface of the mating shell when the connector is fitted with the mating connector. connector. The connector according to claim 1,
The shell includes a first back plate portion that connects a rear end of the first upper plate portion and a front end of the second upper plate portion, and the first lower plate from the rear end of the second upper plate portion toward the lower side. It has a second back plate portion extending in parallel with the one back plate portion, and two side plate portions each extending in an L shape from both side ends of the first upper plate portion, and has a two-step staircase shape. Connector. The connector according to claim 2,
The front end of the first upper plate portion and the front end of the side plate portion are connectors located on the front side of the front end of the contact. The connector according to any one of claims 1 to 3 ,
In a state where the connector is engaged with the mating connector, the distance between the mating shell and the front end of the second upper plate portion is between the upper surface of the mating shell and the first upper plate portion. Connector that is less than half of the distance.

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