Patent Publication Number: US-2022231439-A1

Title: Connector

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims benefit of priority to International Patent Application No. PCT/JP2020/037675, filed Oct. 5, 2020, and to Japanese Patent Application No. 2019-191554, filed Oct. 18, 2019, the entire contents of each are incorporated herein by reference. 
    
    
     BACKGROUND 
     Technical Field 
     The present disclosure relates to a connector including multiple terminals having different sizes. 
     Background Art 
     As a disclosure related to a connector in the past, there has been known the connector described in Japanese Unexamined Patent Application Publication No. 2018-198216, for example. The connector described in Japanese Unexamined Patent Application Publication No. 2018-198216 includes multiple first terminals arranged in a first row extending in a left-right direction and multiple second terminals arranged in a second row extending in the left-right direction. The multiple first terminals include a left-end first terminal positioned at the left-end of the multiple first terminals, and a right-end first terminal positioned at the right-end of the multiple first terminals. The left-end first terminal and the right-end first terminal are larger than the first terminal (intermediate first terminal) other than the left-end first terminal and the right-end first terminal. The multiple second terminals include a left-end second terminal positioned at the left-end of the multiple second terminals, and a right-end second terminal positioned at the right-end of the multiple second terminals. The left-end second terminal and the right-end second terminal are larger than the second terminal (intermediate second terminal) other than the left-end second terminal and the right-end second terminal. 
     SUMMARY 
     There is a demand for increasing a degree of freedom in terminal layout. Specifically, in the connector described in Japanese Unexamined Patent Application Publication No. 2018-198216, an intermediate first terminal being a small terminal and an intermediate second terminal being a small terminal are arranged in a front-back direction. There is a case that an arrangement of the connector terminals described in Japanese Unexamined Patent Application Publication No. 2018-198216 above needs to be changed as follows, for example. Large terminals such as the left-end first terminal and the right-end first terminal, and small terminals such as the intermediate first terminal and the intermediate second terminal are arranged in the front-back direction. 
     Further, in a connector including terminals having multiple sizes, there is a demand for suppressing an increase in size of the connector while maintaining a distance between the terminals at a desired distance. 
     Accordingly, the present disclosure provides a connector capable of increasing the degree of freedom in layout of multiple terminals and suppressing an increase in size of the connector. 
     A connector according to a first aspect includes multiple terminals, and an insulation member holding the multiple terminals. The multiple terminals include a first terminal and a second terminal disposed in a first row extending in a left-right direction. The multiple terminals include a third terminal and a fourth terminal disposed in a second row extending in the left-right direction. The first row is positioned in front or back of the second row. The second terminal is disposed to right of the first terminal and is adjacent to the first terminal. The third terminal is disposed to right of the fourth terminal and is adjacent to the fourth terminal. The first terminal overlaps with the fourth terminal when viewed in a front-back direction. The second terminal overlaps with the third terminal when viewed in the front-back direction. A first width of the first terminal in the left-right direction is larger than a second width of the second terminal in the left-right direction. A third width of the third terminal in the left-right direction is larger than a fourth width of the fourth terminal in the left-right direction. A half of a value obtained by subtracting the fourth width from the first width is defined as a first distance. A half of a value obtained by subtracting the second width from the third width is defined as a second distance. The first terminal, the second terminal, the third terminal, and the fourth terminal are disposed to satisfy conditions (A) and (B): (A) (a1) a left-end of the first terminal is positioned to left of a left-end of the fourth terminal, and a distance between the left-end of the first terminal and the left-end of the fourth terminal in the left-right direction is shorter than the first distance, or (a2) the left-end of the first terminal coincides with the left-end of the fourth terminal in the left-right direction, and (B) (b1) a right-end of the second terminal is positioned to left of a right-end of the third terminal, and a distance between the right-end of the second terminal and the right-end of the third terminal in the left-right direction is shorter than the second distance, or (b2) the right-end of the second terminal coincides with the right-end of the third terminal in the left-right direction. 
     A connector according to a second aspect includes multiple terminals, and an insulation member holding the multiple terminals. The multiple terminals include a first terminal and a second terminal disposed in a first row extending in a left-right direction. The multiple terminals include a third terminal and a fourth terminal disposed in a second row extending in the left-right direction. The first row is positioned in front or back of the second row. The second terminal is disposed to right of the first terminal and is adjacent to the first terminal. The third terminal is disposed to right of the fourth terminal and is adjacent to the fourth terminal. The first terminal overlaps with the fourth terminal when viewed in a front-back direction. The second terminal overlaps with the third terminal when viewed in the front-back direction. A first width of the first terminal in the left-right direction is larger than a second width of the second terminal in the left-right direction. A third width of the third terminal in the left-right direction is larger than a fourth width of the fourth terminal in the left-right direction. A half of a value obtained by subtracting the fourth width from the first width is defined as a first distance. A half of a value obtained by subtracting the second width from the third width is defined as a second distance. The first terminal, the second terminal, the third terminal, and the fourth terminal are disposed to satisfy conditions (C) and (D): (C) (c1) a left-end of the fourth terminal is positioned to left of a left-end of the first terminal, and a distance between the left-end of the first terminal and the left-end of the fourth terminal in the left-right direction is shorter than the second distance, or (c2) the left-end of the first terminal coincides with the left-end of the fourth terminal in the left-right direction, and (D) (d1) a right-end of the third terminal is positioned to left of a right-end of the second terminal, and a distance between the right-end of the second terminal and the right-end of the third terminal in the left-right direction is shorter than the first distance, or (d2) the right-end of the second terminal coincides with the right-end of the third terminal in the left-right direction. 
     A connector according to a third aspect includes multiple terminals, and an insulation member holding the multiple terminals. The multiple terminals include a first terminal, a second terminal, and multiple fifth terminals disposed in a first row extending in a left-right direction. The multiple terminals include a third terminal, a fourth terminal, and multiple sixth terminals disposed in a second row extending in the left-right direction. The first row is positioned in front or back of the second row. The second terminal is disposed to right of the first terminal. The multiple fifth terminals are disposed to right of the first terminal and to left of the second terminal. The third terminal is disposed to right of the fourth terminal. The multiple sixth terminals are disposed to right of the fourth terminal and to left of the third terminal, 
     The first terminal overlaps with the fourth terminal when viewed in a front-back direction. The second terminal overlaps with the third terminal when viewed in the front-back direction. A first width of the first terminal in the left-right direction is larger than a second width of the second terminal in the left-right direction. A third width of the third terminal in the left-right direction is larger than a fourth width of the fourth terminal in the left-right direction. Fifth widths of the multiple fifth terminals in the left-right direction are uniform. Sixth widths of the multiple sixth terminals in the left-right direction are uniform. A half of a value obtained by subtracting the fourth width from the first width is defined as a first distance. A half of a value obtained by subtracting the second width from the third width is defined as a second distance. The first terminal, the second terminal, the third terminal, and the fourth terminal are disposed to satisfy conditions (A) and (B): (A) (a1) a left-end of the first terminal is positioned to left of a left-end of the fourth terminal, and a distance between the left-end of the first terminal and the left-end of the fourth terminal in the left-right direction is shorter than the first distance, or (a2) the left-end of the first terminal coincides with the left-end of the fourth terminal in the left-right direction, and (B) (b1) a right-end of the second terminal is positioned to left of a right-end of the third terminal, and a distance between the right-end of the second terminal and the right-end of the third terminal in the left-right direction is shorter than the second distance, or (b2) the right-end of the second terminal coincides with the right-end of the third terminal in the left-right direction. 
     A connector according to a fourth aspect includes multiple terminals, and an insulation member holding the multiple terminals. The multiple terminals include a first terminal, a second terminal, and multiple fifth terminals disposed in a first row extending in a left-right direction. The multiple terminals include a third terminal, a fourth terminal, and multiple sixth terminals disposed in a second row extending in the left-right direction. The first row is positioned in front or back of the second row. The second terminal is disposed to right of the first terminal. The multiple fifth terminals are disposed to right of the first terminal and to left of the second terminal. The third terminal is disposed to right of the fourth terminal. The multiple sixth terminals are disposed to right of the fourth terminal and to left of the third terminal. The first terminal overlaps with the fourth terminal when viewed in a front-back direction. The second terminal overlaps with the third terminal when viewed in the front-back direction. A first width of the first terminal in the left-right direction is larger than a second width of the second terminal in the left-right direction. A third width of the third terminal in the left-right direction is larger than a fourth width of the fourth terminal in the left-right direction. Fifth widths of the multiple fifth terminals in the left-right direction are uniform. Sixth widths of the multiple sixth terminals in the left-right direction are uniform. A half of a value obtained by subtracting the fourth width from the first width is defined as a first distance. A half of a value obtained by subtracting the second width from the third width is defined as a second distance. The first terminal, the second terminal, the third terminal, and the fourth terminal are disposed to satisfy conditions (C) and (D): (C) (c1) a left-end of the fourth terminal is positioned to left of a left-end of the first terminal, and a distance between the left-end of the first terminal and the left-end of the fourth terminal in the left-right direction is shorter than the second distance, or (c2) the left-end of the first terminal coincides with the left-end of the fourth terminal in the left-right direction, and (D) (d1) a right-end of the third terminal is positioned to left of a right-end of the second terminal, and a distance between the right-end of the second terminal and the right-end of the third terminal in the left-right direction is shorter than the first distance, or (d2) the right-end of the second terminal coincides with the right-end of the third terminal in the left-right direction. 
     According to the present disclosure, it is possible to increase the degree of freedom in layout of multiple terminals and to suppress an increase in size of a connector. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an external perspective view of a first connector; 
         FIG. 2  is an exploded perspective view of the first connector; 
         FIG. 3  is a top view of the first connector; 
         FIG. 4  is a top view of multiple terminals of the connectors according to a comparative example, and a top view of the multiple terminals of the first connectors; 
         FIG. 5  is an external perspective view of a second connector; 
         FIG. 6  is an exploded perspective view of the second connector; and 
         FIG. 7  is a bottom view of the second connector. 
     
    
    
     DETAILED DESCRIPTION 
     Embodiment 
     [First Connector] 
     Hereinafter, a first connector according to an embodiment of the present disclosure will be described with reference to the drawings.  FIG. 1  is an external perspective view of a first connector  10 .  FIG. 2  is an exploded perspective view of the first connector  10 .  FIG. 3  is a top view of the first connector  10 . 
     As illustrated in  FIG. 1  to  FIG. 3 , an up-down direction, a left-right direction, and a front-back direction are defined. Note that the up-down direction, the left-right direction, and the front-back direction are defined for the sake of explanation. Accordingly, the up-down direction, the left-right direction, and the front-back direction when the first connector  10  is actually used do not need to coincide with the up-down direction, the left-right direction, and the front-back direction in  FIG. 1  to  FIG. 3 . 
     In this description, an axis or a member extending in the front-back direction does not necessarily indicate only an axis or a member parallel to the front-back direction. The axis or the member extending in the front-back direction refers to an axis or a member inclined within a range of ±45° relative to the front-back direction. Similarly, an axis or a member extending in the up-down direction refers to an axis or a member inclined within a range of ±45° relative to the up-down direction. An axis or a member extending in the left-right direction refers to an axis or a member inclined within a range of ±45° relative to the left-right direction. 
     In the present description, a first member and a second member arranged in the front-back direction refer to the following state. When the first member and the second member are viewed in a direction perpendicular to the front-back direction, the first member and the second member both are in a state being disposed on any straight line indicating the front-back direction. In the present description, the first member and the second member arranged in the front-back direction when viewed in the up-down direction refer to the following state. When the first member and the second member are viewed in the up-down direction, the first member and the second member both are disposed on any straight line indicating the front-back direction. In the case above, it is allowed that any one of the first member and the second member is not disposed on said any straight line indicating the front-back direction when the first member and the second member are viewed from the left-right direction different from the up-down direction. Note that, the first member and the second member may be in contact with each other. The first member and the second member may be separated from each other. A third member may be present between the first member and the second member. The definition above is also applied to the directions other than the front-back direction. Note that the first member to the third member are portions of a connector. 
     In the present description, the first member being disposed in front of the second member refers to the following state. At least the first member is partially disposed within a region through which the second member passes when moving in parallel to a forward direction. With this, the first member may fit within the region through which the second member passes when moving in parallel to the forward direction, or may protrude from the region through which the second member passes when moving in parallel to the forward direction. In the case above, the first member and the second member are arranged in the front-back direction. The definition above is also applied to the directions other than the front-back direction. 
     In the present description, the first member being disposed in front of the second member as viewed in the left-right direction refers to the following state. The first member and the second member are arranged in the front-back direction as viewed in the left-right direction, and a portion of the first member facing the second member is disposed in front of the second member as viewed in the left-right direction. In the definition above, it is allowed that the first member and the second member are not arranged in the front-back direction in a three-dimensional view. The definition above is also applied to the directions other than the front-back direction. 
     In the present description, the first member being disposed in front of the second member refers to the following state. The first member is disposed in front of a plane passing through a front-end of the second member and orthogonal to the front-back direction. In the case above, it is allowed that the first member and the second member are arranged side by side in the front-back direction, or the first member and the second member are not arranged side by side in the front-back direction. The definition above is also applied to the directions other than the front-back direction. 
     In the present description, unless otherwise specified, each portion of the first member is defined as follows. A front portion of the first member means a front half of the first member. A back portion of the first member means a back half of the first member. A left portion of the first member means a left half of the first member. A right portion of the first member means a right half of the first member. An upward portion of the first member means an upper half of the first member. A downward portion of the first member means a lower half of the first member. The front-end of the first member means an end in the forward direction of the first member. A back-end of the first member means an end in a backward direction of the first member. A left-end of the first member means an end in a leftward direction of the first member. A right-end of the first member means an end in a rightward direction of the first member. An upward-end of the first member means an end in an upward direction of the first member. A downward-end of the first member means an end in a downward direction of the first member. A front-end portion of the first member means the front-end of the first member and the vicinity thereof. A back-end portion of the first member means the back-end of the first member and the vicinity thereof. A left-end portion of the first member means the left-end of the first member and the vicinity thereof. A right-end portion of the first member means the right-end of the first member and the vicinity thereof. An upward-end portion of the first member means the upward-end of the first member and the vicinity thereof. A downward-end portion of the first member means the downward-end of the first member and the vicinity thereof. 
     The first connector  10  is coupled to a second connector  110  which will be described later. The first connector  10  is mounted on a circuit substrate such as a flexible substrate, for example. The first connector  10  includes an insulation member  12 , multiple terminals  14  (multiple terminals), radio frequency terminals  16   a  and  16   b , contact terminals  18   a  to  18   f , and an external terminal  20 . 
     The insulation member  12  is a block having a rectangular shape when viewed in the downward direction. The insulation member  12  is made of an insulation resin such as a liquid crystal polymer, for example. The insulation member  12  holds the multiple terminals  14 , the radio frequency terminals  16   a  and  16   b , the contact terminals  18   a  to  18   f , and the external terminal  20 . Specifically, the insulation member  12  is integrated with the multiple terminals  14 , the radio frequency terminals  16   a  and  16   b , the contact terminals  18   a  to  18   f , and the external terminal  20  with insert molding, for example. Therefore, the multiple terminals  14 , the radio frequency terminals  16   a  and  16   b , the contact terminals  18   a  to  18   f , and the external terminal  20  are partially embedded in the insulation member  12 . 
     The external terminal  20  is a conductor connected to ground potential. The external terminal  20  has a rectangular annular shape when viewed in the downward direction. A long side of the external terminal  20  extends in the left-right direction. A short side of the external terminal  20  extends in the front-back direction. The external terminal  20  is manufactured by bending a single metal plate. The external terminal  20  is made of a copper-based material such as phosphor bronze, for example. 
     The external terminal  20  has a rectangular annular shape when viewed in the downward direction, thereby covering an upper surface of the insulation member  12  in the vicinity of a front side, the vicinity of a back side, the vicinity of a left side, and the vicinity of a right side. Note that, since the external terminal  20  has a rectangular annular shape when viewed in the downward direction, the central portion of the insulation member  12  is exposed through the external terminal  20  when viewed in the downward direction. The external terminal  20  covers the insulation member  12  on a part of a front surface, a part of a back surface, a part of a left surface, and a part of a right surface. 
     The multiple terminals  14  includes a first terminal  14   a , a second terminal  14   b , a third terminal  14   c , and a fourth terminal  14   d . The first terminal  14   a , the second terminal  14   b , the third terminal  14   c , and the fourth terminal  14   d  are disposed closer to the vicinity of the center of the insulation member  12  than to an outer edge of the insulation member  12  when viewed in the downward direction. 
     The first terminal  14   a  and the second terminal  14   b  are disposed in a first row L 1  extending in the left-right direction. That is, the first terminal  14   a  and the second terminal  14   b  are arranged in the left-right direction. The second terminal  14   b  is disposed to the right of the first terminal  14   a . Further, the second terminal  14   b  is adjacent to the first terminal  14   a . Therefore, no other terminal is disposed between the first terminal  14   a  and the second terminal  14   b.    
     The third terminal  14   c  and the fourth terminal  14   d  are disposed in a second row L 2  extending in the left-right direction. That is, the third terminal  14   c  and the fourth terminal  14   d  are arranged in the left-right direction. The third terminal  14   c  is disposed to the right of the fourth terminal  14   d . Further, the third terminal  14   c  is adjacent to the fourth terminal  14   d . Therefore, no other terminal is disposed between the fourth terminal  14   d  and the third terminal  14   c . The first row L 1  is positioned in the back of the second row L 2 . 
     The first terminal  14   a  overlaps with the fourth terminal  14   d  when viewed in the front-back direction. In the present embodiment, the first terminal  14   a  is disposed in the back of the fourth terminal  14   d . The fourth terminal  14   d  does not protrude in the left-right direction from the first terminal  14   a  when viewed in the front-back direction. 
     The second terminal  14   b  overlaps with the third terminal  14   c  when viewed in the front-back direction. In the present embodiment, the second terminal  14   b  is disposed in the back of the third terminal  14   c . The second terminal  14   b  does not protrude in the left-right direction from the third terminal  14   c  when viewed in the front-back direction. 
     A first width W 1  of the first terminal  14   a  in the left-right direction is larger than a second width W 2  of the second terminal  14   b  in the left-right direction. Accordingly, a conductor loss of the first terminal  14   a  is smaller than a conductor loss of the second terminal  14   b . Further, a third width W 3  of the third terminal  14   c  in the left-right direction is larger than a fourth width W 4  of the fourth terminal  14   d  in the left-right direction. Accordingly, a conductor loss of the third terminal  14   c  is smaller than a conductor loss of the fourth terminal  14   d . In the present embodiment, the first width W 1  and the third width W 3  are equal to each other. The second width W 2  and the fourth width W 4  are equal to each other. Further, the first width W 1  and the fourth width W 4  are not equal to each other. The second width W 2  and the third width W 3  are not equal to each other. The first width W 1  is the maximum value of the width of the first terminal  14   a  in the left-right direction. The second width W 2  is the maximum value of the width of the second terminal  14   b  in the left-right direction. The third width W 3  is the maximum value of the width of the third terminal  14   c  in the left-right direction. The fourth width W 4  is the maximum value of the width of the fourth terminal  14   d  in the left-right direction. Further, a distance between the right-end of the first terminal  14   a  and the left-end of the second terminal  14   b  is equal to a distance between the left-end of the third terminal  14   c  and the right-end of the fourth terminal  14   d.    
     The first terminal  14   a  and the third terminal  14   c  are power supply terminals. Accordingly, the first terminal  14   a  and the third terminal  14   c  are terminals to be connected to power supply potential. The second terminal  14   b  and the fourth terminal  14   d  are digital signal terminals. Accordingly, the second terminal  14   b  and the fourth terminal  14   d  are terminals to which digital signals (that is, radio frequency signals) are applied. The first terminal  14   a , the second terminal  14   b , the third terminal  14   c , and the fourth terminal  14   d  have the same structure except having different widths in the left-right direction. Hereinafter, the structures of the first terminal  14   a , the second terminal  14   b , the third terminal  14   c , and the fourth terminal  14   d  will be described by taking the first terminal  14   a  as an example. 
     The first terminal  14   a  includes a U-shaped portion  140   a , a lead-out portion  140   b , and a connection portion  140   c . The U-shaped portion  140   a  has a U-shape when viewed in the left-right direction. Accordingly, the U-shaped portion  140   a  has a shape recessed in the downward direction. An inner surface of the U-shaped portion  140   a  is exposed through the insulation member  12  when viewed in the downward direction. The lead-out portion  140   b  is positioned in the back of the bottom portion of the U-shaped portion  140   a . The lead-out portion  140   b  extends linearly in the front-back direction. A back-end portion of the lead-out portion  140   b  is exposed through the insulation member  12 . The connection portion  140   c  connects the back-end of the U-shaped portion  140   a  and the front-end of the lead-out portion  140   b . The first terminal  14   a  described above is manufactured by bending a single metal plate. The first terminal  14   a  is made of a copper-based material such as phosphor bronze, for example. 
     The radio frequency terminal  16   a  is disposed on the left portion of the insulation member  12  when viewed in the downward direction. The radio frequency terminal  16   b  is disposed on the right portion of the insulation member  12  when viewed in the downward direction. The radio frequency terminals  16   a  and  16   b  are terminals to which radio frequency signals are applied. The radio frequency terminals  16   a  and  16   b  have the same structure. Hereinafter, the structure of the radio frequency terminals  16   a  and  16   b  will be described by taking the radio frequency terminal  16   a  as an example. 
     The radio frequency terminal  16   a  includes an inverted U-shaped portion  160   a  and a lead-out portion  160   b . The inverted U-shaped portion  160   a  has an upside-down U-shape when viewed in the left-right direction. Accordingly, the inverted U-shaped portion  160   a  has a shape protruding in the upward direction. An outer surface of the inverted U-shaped portion  160   a  is exposed through the insulation member  12  when viewed in the downward direction. The lead-out portion  160   b  linearly extends in the forward direction from the front-end of the inverted U-shaped portion  160   a . The front-end portion of the lead-out portion  160   b  is exposed through the insulation member  12 . The radio frequency terminal  16   a  described above is manufactured by bending a single metal plate. The radio frequency terminal  16   a  is made of a copper-based material such as phosphor bronze, for example. 
     The contact terminals  18   a  to  18   c  are disposed on the left portion of the insulation member  12  when viewed in the downward direction. The contact terminal  18   a  is disposed on the left of the radio frequency terminal  16   a . The contact terminal  18   b  is disposed on the front right of the radio frequency terminal  16   a . The contact terminal  18   c  is disposed on the back right of the radio frequency terminal  16   a . The contact terminals  18   d  to  18   f  are disposed on the right portion of the insulation member  12  when viewed in the downward direction. The contact terminal  18   d  is disposed on the right of the radio frequency terminal  16   b . The contact terminal  18   e  is disposed on the front left of the radio frequency terminal  16   b . The contact terminal  18   f  is disposed on the back left of the radio frequency terminal  16   b . The contact terminals  18   a  and  18   b  are terminals connected to ground potential. The contact terminals  18   a  and  18   b  are manufactured by bending a single metal plate. The contact terminals  18   a  and  18   b  are made of a copper-based material such as phosphor bronze, for example. 
     The first connector  10  configured as described above is mounted on a circuit substrate. Specifically, the multiple terminals  14 , the radio frequency terminals  16   a  and  16   b , the contact terminals  18   a  to  18   f , and the external terminal  20  are connected to land electrodes provided on the circuit substrate by soldering. 
     Next, the disposition of the multiple terminals  14  will be described in detail with reference to the drawings.  FIG. 4  is a top view of the multiple terminals  14  of connectors  210  and  310  according to a comparative example, and a top view of the multiple terminals  14  of the first connector  10 ,  10   a , and  10   b . The first connectors  10   a  and  10   b  are modifications of the first connector  10 .  FIG. 4  is schematically illustrated. Therefore, the sizes of the multiple terminals  14  in  FIG. 4  do not match the sizes of the multiple terminals  14  in  FIG. 1  to  FIG. 3 . Further, the connectors  210  and  310  are not included in the connector according to the present disclosure. 
     First, as illustrated in  FIG. 4 , a half of a value obtained by subtracting the fourth width W 4  from the first width W 1  is defined as a first distance D 1 . A half of a value obtained by subtracting the second width W 2  from the third width W 3  is defined as a second distance D 2 . Meanwhile, the first terminal  14   a , the second terminal  14   b , the third terminal  14   c , and the fourth terminal  14   d  are disposed to satisfy conditions (A) and (B), or to satisfy conditions (C) and (D). 
     (A) (a1) The left-end of the first terminal  14   a  is positioned to the left of the left-end of the fourth terminal  14   d , and a distance d1 between the left-end of the first terminal  14   a  and the left-end of the fourth terminal  14   d  in the left-right direction is shorter than the first distance D 1 , or (a2) the left-end of the first terminal  14   a  coincides with the left-end of the fourth terminal  14   d  in the left-right direction. 
     (B) (b1) The right-end of the second terminal  14   b  is positioned to the left of the right-end of the third terminal  14   c , and a distance d2 between the right-end of the second terminal  14   b  and the right-end of the third terminal  14   c  in the left-right direction is shorter than the second distance D 2 , or (b2) the right-end of the second terminal  14   b  coincides with the right-end of the third terminal  14   c  in the left-right direction. 
     (C) (c1) The left-end of the fourth terminal  14   d  is positioned to the left of the left-end of the first terminal  14   a , and the distance d1 between the left-end of the first terminal  14   a  and the left-end of the fourth terminal  14   d  in the left-right direction is shorter than the second distance D 2 , or (c2) the left-end of the first terminal  14   a  coincides with the left-end of the fourth terminal  14   d  in the left-right direction. 
     (D) (d1) The right-end of the third terminal  14   c  is positioned to the left of the right-end of the second terminal  14   b , and the distance d2 between the right-end of the second terminal  14   b  and the right-end of the third terminal  14   c  in the left-right direction is shorter than the first distance D 1 , or (d2) the right-end of the second terminal  14   b  coincides with the right-end of the third terminal  14   c  in the left-right direction. 
     In the first connector  10 , the first terminal  14   a , the second terminal  14   b , the third terminal  14   c , and the fourth terminal  14   d  are disposed to satisfy the conditions (A) and (B). The left-end of the fourth terminal  14   d  is disposed closer to the left-end of the first terminal  14   a  than to the center of the first terminal  14   a  in the left-right direction. The right-end of the second terminal  14   b  is disposed closer to the right-end of the third terminal  14   c  than to the center of the third terminal  14   c  in the left-right direction. In particular, in the first connector  10 , the first terminal  14   a , the second terminal  14   b , the third terminal  14   c , and the fourth terminal  14   d  are disposed to satisfy the conditions (a2) of (A) and (b2) of (B). Accordingly, (a2) the left-end of the first terminal  14   a  coincides with the left-end of the fourth terminal  14   d  in the left-right direction. (b2) The right-end of the second terminal  14   b  coincides with the right-end of the third terminal  14   c  in the left-right direction. 
     Incidentally, as illustrated in the first connector  10   a  in  FIG. 4 , the first terminal  14   a , the second terminal  14   b , the third terminal  14   c , and the fourth terminal  14   d  may be disposed to satisfy the conditions of (a1) of (A) and (b1) of (B). That is, it is allowed that the left-end of the first terminal  14   a  is positioned to the slight left of the left-end of the fourth terminal  14   d , and the right-end of the second terminal  14   b  is positioned to the slight left of the right-end of the third terminal  14   c . Note that, it is not allowed that the distance d1 between the left-end of the first terminal  14   a  and the left-end of the fourth terminal  14   d  in the left-right direction is equal to the first distance D 1  as in the connector  210 . Further, it is not allowed that the distance d2 between the right-end of the second terminal  14   b  and the right-end of the third terminal  14   c  in the left-right direction is equal to the second distance D 2 . 
     Further, as illustrated in the first connector  10   b  in  FIG. 4 , the first terminal  14   a , the second terminal  14   b , the third terminal  14   c , and the fourth terminal  14   d  may be disposed to satisfy the conditions of (c1) of (C) and (d1) of (D). That is, it is allowed that the left-end of the fourth terminal  14   d  is positioned to the slight left of the left-end of the first terminal  14   a , and the right-end of the third terminal  14   c  is positioned to the slight left of the right-end of the second terminal  14   b . Note that, it is not allowed that the distance d1 between the left-end of the first terminal  14   a  and the left-end of the fourth terminal  14   d  in the left-right direction is equal to the second distance D 2  as in the connector  310 . Further, it is not allowed that the distance d2 between the right-end of the second terminal  14   b  and the right-end of the third terminal  14   c  in the left-right direction is equal to the first distance D 1 . 
     [Second Connector] 
     Hereinafter, a second connector according to an embodiment of the present disclosure will be described with reference to the drawings.  FIG. 5  is an external perspective view of the second connector  110 .  FIG. 6  is an exploded perspective view of the second connector  110 .  FIG. 7  is a bottom view of the second connector  110 . 
     As illustrated in  FIG. 5  to  FIG. 7 , the up-down direction, the left-right direction, and the front-back direction are defined. Note that the up-down direction, the left-right direction, and the front-back direction are defined for the sake of explanation. Accordingly, the up-down direction, the left-right direction, and the front-back direction when the second connector  110  is actually used do not need to coincide with the up-down direction, the left-right direction, and the front-back direction in  FIG. 5  to  FIG. 7 . 
     The second connector  110  is coupled to the first connector  10 . The second connector  110  is mounted on a circuit substrate such as a flexible substrate, for example. The second connector  110  includes an insulation member  112 , multiple terminals  114 , radio frequency terminals  116   a  and  116   b , and external terminals  120   a  and  120   b.    
     The insulation member  112  includes a back connection portion  112   a , a front connection portion  112   b , a left portion  112   c , and a right portion  112   d . The left portion  112   c  and the right portion  112   d  have a rectangular shape when viewed in the upward direction. The right portion  112   d  is disposed to the right of the left portion  112   c . The back connection portion  112   a  extends in the left-right direction. The back connection portion  112   a  connects the left portion  112   c  and the right portion  112   d . The front connection portion  112   b  extends in the left-right direction. The front connection portion  112   b  connects the left portion  112   c  and the right portion  112   d . The front connection portion  112   b  is disposed in front of the back connection portion  112   a . The insulation member  112  is made of an insulation resin such as a liquid crystal polymer, for example. The insulation member  112  holds the multiple terminals  114 , the radio frequency terminals  116   a  and  116   b , and the external terminals  120   a  and  120   b . Specifically, the insulation member  112  is integrated with the multiple terminals  114 , the radio frequency terminals  116   a  and  116   b , and the external terminals  120   a  and  120   b  with insert molding. Therefore, the multiple terminals  114 , the radio frequency terminals  116   a  and  116   b , and the external terminals  120   a  and  120   b  are partially embedded in the insulation member  112 . 
     The external terminals  120   a  and  120   b  are conductors to be connected to ground potential. The external terminals  120   a  and  120   b  have a rectangular annular shape when viewed in the upward direction. Long sides of the external terminals  120   a  and  120   b  extend in the front-back direction. Short sides of the external terminals  120   a  and  120   b  extend in the left-right direction. Each of the external terminals  120   a  and  120   b  is manufactured by bending a single metal plate. The external terminals  120   a  and  120   b  are made of a copper-based material such as phosphor bronze, for example. 
     The external terminal  120   a  has a rectangular annular shape when viewed in the upward direction, thereby covering an upper surface of the left portion  112   c  of the insulation member  112  in the vicinity of a front side, the vicinity of a back side, the vicinity of a left side, and the vicinity of a right side. Note that, since the external terminal  120   a  has a rectangular annular shape when viewed in the upward direction, the central portion of the left portion  112   c  of the insulation member  112  is exposed through the external terminal  120   a  when viewed in the upward direction. The external terminal  120   a  covers the left portion  112   c  of the insulation member  112  on a part of a front surface, a part of a back surface, a part of a left surface, and a part of a right surface. 
     The external terminal  120   b  has a rectangular annular shape when viewed in the upward direction, thereby covering an upper surface of the right portion  112   d  of the insulation member  112  in the vicinity of a front side, the vicinity of a back side, the vicinity of a left side, and the vicinity of a right side. Note that, since the external terminal  120   b  has a rectangular annular shape when viewed in the upward direction, the central portion of the right portion  112   d  of the insulation member  112  is exposed through the external terminal  120   b  when viewed in the upward direction. The external terminal  120   b  covers the right portion  112   d  of the insulation member  112  on a part of a front surface, a part of a back surface, a part of a left surface, and a part of a right surface. 
     The multiple terminals  114  include a first terminal  114   a , a second terminal  114   b , a third terminal  114   c , and a fourth terminal  114   d . The first terminal  114   a , the second terminal  114   b , the third terminal  114   c , and the fourth terminal  114   d  are disposed closer to the vicinity of the center of the insulation member  112  than to an outer edge of the insulation member  112  when viewed in the upward direction. In the present embodiment, the first terminal  114   a  and the second terminal  114   b  are held by the back connection portion  112   a . The third terminal  114   c  and the fourth terminal  114   d  are held by the front connection portion  112   b.    
     The first terminal  114   a  and the second terminal  114   b  are disposed in a first row L 3  extending in the left-right direction. That is, the first terminal  114   a  and the second terminal  114   b  are arranged in the left-right direction. The second terminal  114   b  is disposed to the right of the first terminal  114   a . Further, the second terminal  114   b  is adjacent to the first terminal  114   a . Therefore, no other terminal is disposed between the first terminal  114   a  and the second terminal  114   b.    
     The third terminal  114   c  and the fourth terminal  114   d  are disposed in a second row L 4  extending in the left-right direction. That is, the third terminal  114   c  and the fourth terminal  114   d  are arranged in the left-right direction. The third terminal  114   c  is disposed to the right of the fourth terminal  114   d . Further, the third terminal  114   c  is adjacent to the fourth terminal  114   d . Therefore, no other terminal is disposed between the fourth terminal  114   d  and the third terminal  114   c . The first row L 3  is positioned in the back of the second row L 4 . 
     Further, the first terminal  114   a  overlaps with the fourth terminal  114   d  when viewed in the front-back direction. In the present embodiment, the first terminal  114   a  is disposed in the back of the fourth terminal  114   d . The fourth terminal  114   d  does not protrude in the left-right direction from the first terminal  114   a  when viewed in the front-back direction. 
     The second terminal  114   b  overlaps with the third terminal  114   c  when viewed in the front-back direction. In the present embodiment, the second terminal  114   b  is disposed in the back of the third terminal  114   c . The second terminal  114   b  does not protrude in the left-right direction from the third terminal  114   c  when viewed in the front-back direction. 
     The first width W 1  of the first terminal  114   a  in the left-right direction is larger than the second width W 2  of the second terminal  114   b  in the left-right direction. Accordingly, a conductor loss of the first terminal  114   a  is smaller than a conductor loss of the second terminal  114   b . Further, the third width W 3  of the third terminal  114   c  in the left-right direction is larger than the fourth width W 4  of the fourth terminal  114   d  in the left-right direction. Accordingly, a conductor loss of the third terminal  114   c  is smaller than a conductor loss of the fourth terminal  114   d . In the present embodiment, the first width W 1  and the third width W 3  are equal to each other. The second width W 2  and the fourth width W 4  are equal to each other. The first width W 1  is the maximum value of the width of the first terminal  114   a  in the left-right direction. The second width W 2  is the maximum value of the width of the second terminal  114   b  in the left-right direction. The third width W 3  is the maximum value of the width of the third terminal  114   c  in the left-right direction. The fourth width W 4  is the maximum value of the width of the fourth terminal  114   d  in the left-right direction. Further, a distance between the right-end of the first terminal  114   a  and the left-end of the second terminal  114   b  is equal to a distance between the left-end of the third terminal  114   c  and the right-end of the fourth terminal  114   d.    
     The first terminal  114   a  and the third terminal  114   c  are the power supply terminals. Accordingly, the first terminal  114   a  and the third terminal  114   c  are terminals to be connected to power supply potential. The second terminal  114   b  and the fourth terminal  114   d  are the digital signal terminals. Accordingly, the second terminal  114   b  and the fourth terminal  114   d  are terminals to which digital signals (that is, radio frequency signals) are applied. The first terminal  114   a , the second terminal  114   b , the third terminal  114   c , and the fourth terminal  114   d  have the same structure except having different widths in the left-right direction. Hereinafter, the structures of the first terminal  114   a , the second terminal  114   b , the third terminal  114   c , and the fourth terminal  114   d  will be described by taking the first terminal  114   a  as an example. 
     The first terminal  114   a  includes a U-shaped portion  1140   a  and a lead-out portion  1140   b . The U-shaped portion  1140   a  has a U-shape when viewed in the left-right direction. Accordingly, the U-shaped portion  1140   a  has a shape protruding in the downward direction. An outer surface of the U-shaped portion  1140   a  is exposed through the insulation member  112  when viewed in the upward direction. The lead-out portion  1140   b  linearly extends in the backward direction from the back-end of the U-shaped portion  1140   a . The back-end portion of the lead-out portion  1140   b  is exposed on the insulation member  112 . The first terminal  114   a  described above is manufactured by bending a single metal plate. The first terminal  114   a  is made of a copper-based material such as phosphor bronze, for example. 
     The radio frequency terminal  116   a  is disposed in the left portion  112   c  of the insulation member  112  when viewed in the upward direction. The radio frequency terminal  116   b  is disposed in the right portion  112   d  of the insulation member  112  when viewed in the upward direction. The radio frequency terminals  116   a  and  116   b  are terminals to which radio frequency signals are applied. The radio frequency terminals  116   a  and  116   b  have the same structure. Hereinafter, the structure of the radio frequency terminals  116   a  and  116   b  will be described by taking the radio frequency terminal  116   a  as an example. 
     The radio frequency terminal  116   a  includes an inverted U-shaped portion  1160   a , a lead-out portion  1160   b , and a connection portion  1160   c . The inverted U-shaped portion  1160   a  has an upside-down U-shape when viewed in the left-right direction. Accordingly, the inverted U-shaped portion  1160   a  has a shape recessed in the upward direction. An inner surface of the inverted U-shaped portion  1160   a  is exposed through the insulation member  112  when viewed in the upward direction. The lead-out portion  1160   b  is positioned in front of the bottom portion of the inverted U-shaped portion  1160   a . The lead-out portion  1160   b  extends linearly in the front-back direction. The front-end portion of the lead-out portion  1160   b  is exposed through the insulation member  112 . The connection portion  1160   c  connects the front-end of the inverted U-shaped portion  1160   a  and the back-end of the lead-out portion  1160   b . The radio frequency terminal  116   a   4   a  described above is manufactured by bending a single metal plate. The radio frequency terminal  116   aa  is made of a copper-based material such as phosphor bronze, for example. 
     The second connector  110  configured as described above is mounted on a circuit substrate. Specifically, the multiple terminals  114 , the radio frequency terminals  116   a  and  116   b , and the external terminals  120   a  and  120   b  are connected to land electrodes provided on the circuit substrate by soldering. 
     The detail of the disposition of the multiple terminals  114  as described above is the same as the detail of the disposition of the multiple terminals  14  in  FIG. 4 . Accordingly, a detailed description of the disposition of the multiple terminals  114  is omitted. 
     [Connection between First Connector and Second Connector] 
     The first connector  10  and the second connector  110  configured as described above are coupled to each other. Specifically, the second connector  110  is disposed on the first connector  10 . Then, the second connector  110  is moved in the downward direction. The external terminal  120   a  is inserted into the left portion of a region surrounded by the external terminal  20 . At this time, the external terminal  20  and the contact terminals  18   a  to  18   c  come into contact with the external terminal  120   a . Further, the external terminal  120   b  is inserted into the right portion of the region surrounded by the external terminal  20 . At this time, the external terminal  20  and the contact terminals  18   d  to  18   f  are coupled to the external terminal  120   b.    
     Further, the radio frequency terminals  16   a  and  16   b  are respectively coupled to the radio frequency terminals  116   a  and  116   b . The first terminal  14   a , the second terminal  14   b , the third terminal  14   c , and the fourth terminal  14   d  are respectively coupled to the first terminal  114   a , the second terminal  114   b , the third terminal  114   c , and the fourth terminal  114   d.    
     [Effect] 
     With the use of the first connector  10  and the second connector  110  configured as described above, it is possible to increase the degree of freedom in the layout of the multiple terminals  14 . The description of the effect of the second connector  110  is the same as the description of the effect of the first connector  10 . Hereinafter, the effect of the first connector  10  will be described. 
     In more detail, the first width W 1  of the first terminal  14   a  in the left-right direction is larger than the second width W 2  of the second terminal  14   b  in the left-right direction. The third width W 3  of the third terminal  14   c  in the left-right direction is larger than the fourth width W 4  of the fourth terminal  14   d  in the left-right direction. Further, the first terminal  14   a  overlaps with the fourth terminal  14   d  when viewed in the front-back direction. The second terminal  14   b  overlaps with the third terminal  14   c  when viewed in the front-back direction. Thus, the two terminals having different sizes are arranged in the front-back direction. Consequently, with the use of the first connector  10 , it is possible to increase the degree of freedom in the layout of the multiple terminals  14 . 
     Further, with the use of the first connector  10 , it is possible to suppress an increase in the size of the first connector  10 . In more detail, in a case that two terminals having different sizes are arranged in the front-back direction, a disposition in such as the connector  210  in  FIG. 4  is adopted. Specifically, the center of the first terminal  14   a  in the left-right direction and the center of the fourth terminal  14   d  in the left-right direction coincide with each other. The center of the second terminal  14   b  in the left-right direction and the center of the third terminal  14   c  in the left-right direction coincide with each other. In the case above, a length of the multiple terminals  14  in the left-right direction is the sum of a distance from the right-end of the third terminal  14   c  to the left-end of the fourth terminal  14   d  and the first distance D 1 , or the sum of a distance from the left-end of the first terminal  14   a  to the right-end of the second terminal  14   b  and the second distance D 2 . Therefore, in the connector  210 , the length of the multiple terminals  14  in the left-right direction is increased. 
     Hence, the first terminal  14   a , the second terminal  14   b , the third terminal  14   c , and the fourth terminal  14   d  are disposed to satisfy the conditions (A) and (B), or to satisfy the conditions (C) and (D). 
     (A) (a1) The left-end of the first terminal  14   a  is positioned to the left of the left-end of the fourth terminal  14   d , and the distance d1 between the left-end of the first terminal  14   a  and the left-end of the fourth terminal  14   d  in the left-right direction is shorter than the first distance D 1 , or (a2) the left-end of the first terminal  14   a  coincides with the left-end of the fourth terminal  14   d  in the left-right direction. 
     (B) (b1) The right-end of the second terminal  14   b  is positioned to the left of the right-end of the third terminal  14   c , and the distance d2 between the right-end of the second terminal  14   b  and the right-end of the third terminal  14   c  in the left-right direction is shorter than the second distance D 2 , or (b2) the right-end of the second terminal  14   b  coincides with the right-end of the third terminal  14   c  in the left-right direction. 
     (C) (c1) The left-end of the fourth terminal  14   d  is positioned to the left of the left-end of the first terminal  14   a , and the distance d1 between the left-end of the first terminal  14   a  and the left-end of the fourth terminal  14   d  in the left-right direction is shorter than the second distance D 2 , or (c2) the left-end of the first terminal  14   a  coincides with the left-end of the fourth terminal  14   d  in the left-right direction. 
     (D) (d1) The right-end of the third terminal  14   c  is positioned to the left of the right-end of the second terminal  14   b , and the distance d2 between the right-end of the second terminal  14   b  and the right-end of the third terminal  14   c  in the left-right direction is shorter than the first distance D 1 , or (d2) the right-end of the second terminal  14   b  coincides with the right-end of the third terminal  14   c  in the left-right direction. 
     Hereinafter, the conditions to be satisfied in the disposition of the first terminal  14   a , the second terminal  14   b , the third terminal  14   c , and the fourth terminal  14   d  will be described using expressions different from the expressions above. First, the position of the left-end of the fourth terminal  14   d  relative to the position of the left-end of the first terminal  14   a  is defined as x. At the position of the left-end of the first terminal  14   a, x  is defined as 0. When the left-end of the fourth terminal  14   d  is positioned to the left of the left-end of the first terminal  14   a, x  takes a positive value. When the left-end of the fourth terminal  14   d  is positioned to the right of the left-end of the first terminal  14   a, x  takes a negative value. 
     Next, the position of the right-end of the third terminal  14   c  relative to the position of the right-end of the second terminal  14   b  is defined as y. At the position of the right-end of the second terminal  14   b, y  is defined as 0. When the right-end of the third terminal  14   c  is positioned to the left of the right-end of the second terminal  14   b, y  takes a negative value. When the right-end of the third terminal  14   c  is positioned to the right of the right-end of the second terminal  14   b, y  takes a positive value. 
     Meanwhile, the first terminal  14   a , the second terminal  14   b , the third terminal  14   c , and the fourth terminal  14   d  are disposed to satisfy inequality (1) and inequality (2), or to satisfy inequality (3) and inequality (4). 
       0≥ x&gt;−D 1  (1)
 
         D 2&gt; y≥ 0  (2)
 
         D 2&gt; x≥ 0  (3)
 
       0≥ y&gt;−D 1  (4)
 
     A case that the first terminal  14   a , the second terminal  14   b , the third terminal  14   c , and the fourth terminal  14   d  are disposed to satisfy the conditions (A) and (B) will be described. In the case above, the length of the multiple terminals  14  in the left-right direction is the sum of the distance from the right-end of the third terminal  14   c  to the left-end of the fourth terminal  14   d , and the distance d1. The distance d1 is shorter than the first distance D 1 . Therefore, the length of the multiple terminals  14  of the first connector  10  in the left-right direction is shorter than the length of the multiple terminals  14  of the connector  210  in the left-right direction. With this, an increase in the size of the first connector  10  is suppressed. 
     A case that the first terminal  14   a , the second terminal  14   b , the third terminal  14   c , and the fourth terminal  14   d  are disposed to satisfy the conditions (C) and (D) will be described. In the case above, the length of the multiple terminals  14  in the left-right direction is the sum of the distance from the right-end of the third terminal  14   c  to the left-end of the fourth terminal  14   d , and the distance d2. The distance d2 is shorter than the first distance D 1 . Therefore, the length of the multiple terminals  14  of the first connector  10  in the left-right direction is shorter than the length of the multiple terminals  14  of the connector  310  in the left-right direction. With this, an increase in the size of the first connector  10  is suppressed. 
     Further, with the use of the first connector  10 , it is possible to further suppress an increase in the size of the first connector  10 . In more detail, the left-end of the fourth terminal  14   d  is disposed closer to the left-end of the first terminal  14   a  than to the center of the first terminal  14   a  in the left-right direction. This shortens the distance d1. Further, the right-end of the second terminal  14   b  is disposed closer to the right-end of the third terminal  14   c  than to the center of the third terminal  14   c  in the left-right direction. This shortens the distance d2. Consequently, the length of the multiple terminals  14  of the first connector  10  in the left-right direction is shortened. With this, an increase in the size of the first connector  10  is further suppressed. 
     Further, with the use of the first connector  10 , it is possible to further suppress an increase in the size of the first connector  10 . In more detail, the left-end of the first terminal  14   a  coincides with the left-end of the fourth terminal  14   d  in the left-right direction. The right-end of the second terminal  14   b  coincides with the right-end of the third terminal  14   c  in the left-right direction. In the case above, the distances d1 and d2 are 0. Consequently, the length of the multiple terminals  14  of the first connector  10  in the left-right direction is the distance from the right-end of the third terminal  14   c  to the left-end of the fourth terminal  14   d . With this, the length of the multiple terminals  14  of the first connector  10  in the left-right direction is minimized. As described above, with the use of the first connector  10 , it is possible to further suppress an increase in the size of the first connector  10 . 
     OTHER EMBODIMENTS 
     Note that, the structures of the first connectors  10 ,  10   a , and  10   b  may be combined in any manner. Further, the structures of the first connectors  10 ,  10   a , and  10   b  may be used for the second connector  110 . 
     Note that, in the first connectors  10 ,  10   a , and  10   b , the first row L 1  may be positioned in front of the second row L 2 . Further, in the second connector  110 , the first row L 3  may be positioned in front of the second row L 4 . 
     Note that, in the first connectors  10 ,  10   a , and  10   b , the multiple terminals  14  may include multiple sets of the first terminal  14   a , the second terminal  14   b , the third terminal  14   c , and the fourth terminal  14   d . Accordingly, multiple sets of the first terminal  14   a , the second terminal  14   b , the third terminal  14   c , and the fourth terminal  14   d  may be arranged in the left-right direction. 
     Note that, in the second connector  110 , the multiple terminals  114  may include multiple sets of the first terminal  114   a , the second terminal  114   b , the third terminal  114   c , and the fourth terminal  114   d . Accordingly, multiple sets of the first terminal  114   a , the second terminal  114   b , the third terminal  114   c , and the fourth terminal  114   d  may be arranged in the left-right direction. 
     Note that, the first terminals  14   a  and  114   a , and the third terminals  14   c  and  114   c  may be the digital signal terminals. Further, the second terminals  14   b  and  114   b , and the fourth terminals  14   d  and  114   d  may be the power supply terminals. 
     Note that, it is allowed that the first width W 1  of the first terminal  14   a  in the left-right direction and the third width W 3  of the third terminal  14   c  in the left-right direction are not equal to each other. Similarly, it is allowed that the second width W 2  of the second terminal  14   b  in the left-right direction and the fourth width W 4  of the fourth terminal  14   d  in the left-right direction are not equal to each other. In the case above, the distance from the left-end of the first terminal  14   a  to the right-end of the second terminal  14   b  is preferably equal to the distance from the left-end of the fourth terminal  14   d  to the right-end of the third terminal  14   c.    
     Further, it is allowed that the first width W 1  of the first terminal  14   a  in the left-right direction and the third width W 3  of the third terminal  14   c  in the left-right direction are not equal to each other, and the second width W 2  of the second terminal  14   b  in the left-right direction and the fourth width W 4  of the fourth terminal  14   d  in the left-right direction are equal to each other. Furthermore, it is allowed that the first width W 1  of the first terminal  14   a  in the left-right direction and the third width W 3  of the third terminal  14   c  in the left-right direction are equal to each other, and the second width W 2  of the second terminal  14   b  in the left-right direction and the fourth width W 4  of the fourth terminal  14   d  in the left-right direction are not equal to each other. In the above cases as well, the distance from the left-end of the first terminal  14   a  to the right-end of the second terminal  14   b  is preferably equal to the distance from the left-end of the fourth terminal  14   d  to the right-end of the third terminal  14   c.    
     Note that, it is allowed that the first width W 1  of the first terminal  114   a  in the left-right direction and the third width W 3  of the third terminal  114   c  in the left-right direction are not equal to each other. Similarly, it is allowed that the second width W 2  of the second terminal  114   b  in the left-right direction and the fourth width W 4  of the fourth terminal  114   d  in the left-right direction are not equal to each other. In the case above, a distance from the left-end of the first terminal  114   a  to the right-end of the second terminal  114   b  is preferably equal to a distance from the left-end of the fourth terminal  114   d  to the right-end of the third terminal  114   c.    
     Further, it is allowed that the first width W 1  of the first terminal  114   a  in the left-right direction and the third width W 3  of the third terminal  114   c  in the left-right direction are not equal to each other, and the second width W 2  of the second terminal  114   b  in the left-right direction and the fourth width W 4  of the fourth terminal  114   d  in the left-right direction are equal to each other. Furthermore, it is allowed that the first width W 1  of the first terminal  114   a  in the left-right direction and the third width W 3  of the third terminal  114   c  in the left-right direction are equal to each other, and the second width W 2  of the second terminal  114   b  in the left-right direction and the fourth width W 4  of the fourth terminal  114   d  in the left-right direction are not equal to each other. In the above cases as well, the distance from the left-end of the first terminal  114   a  to the right-end of the second terminal  114   b  is preferably equal to the distance from the left-end of the fourth terminal  114   d  to the right-end of the third terminal  114   c.    
     Note that, it is allowed that the first terminal  14   a  and the second terminal  14   b  are not adjacent to each other. In the case above, the multiple terminals  14  may include multiple fifth terminals and multiple sixth terminals. The multiple fifth terminals are disposed in the first row L 1  extending in the left-right direction. The multiple fifth terminals are disposed to the right of the first terminal  14   a  and to the left of the second terminal  14   b . Fifth widths of the multiple fifth terminals in the left-right direction are uniform. The multiple sixth terminals are disposed in the second row L 2  extending in the left-right direction. The multiple sixth terminals are disposed to the right of the fourth terminal  14   d  and to the left of the third terminal  14   c . Sixth widths of the multiple sixth terminals in the left-right direction are uniform. As described above, the multiple fifth terminals may be provided between the first terminal  14   a  and the second terminal  14   b . The multiple sixth terminals may be provided between the third terminal  14   c  and the fourth terminal  14   d.    
     Note that, it is allowed that the first terminal  114   a  and the second terminal  114   b  are not adjacent to each other. In the case above, the multiple terminals  114  may include multiple fifth terminals and multiple sixth terminals. The multiple fifth terminals are disposed in the first row L 3  extending in the left-right direction. The multiple fifth terminals are disposed to the right of the first terminal  114   a  and to the left of the second terminal  114   b . The fifth widths of the multiple fifth terminals in the left-right direction are uniform. The multiple sixth terminals are disposed in the second row L 4  extending in the left-right direction. The multiple sixth terminals are disposed to the right of the fourth terminal  114   d  and to the left of the third terminal  114   c . The sixth widths of the multiple sixth terminals in the left-right direction are uniform. As described above, the multiple fifth terminals may be provided between the first terminal  114   a  and the second terminal  114   b . The multiple sixth terminals may be provided between the third terminal  114   c  and the fourth terminal  114   d.    
     Note that, the effect of suppressing an increase in the size of a connector is greater in the first connectors  10 ,  10   a ,  10   b , and the second connector  110  that do not include the multiple fifth terminals and the multiple sixth terminals than in a connector that includes the multiple fifth terminals and the multiple sixth terminals.