JP6258420B1 - Movable connector - Google Patents

Abstract

Provided is a movable connector capable of suppressing excessive elongation of a movable piece of a terminal during assembly of the connector. A fixed side wall 8 is formed in a fixed housing 2 of a movable connector 1, and a jig insertion hole 8e for inserting a movable housing holding jig T1 for holding the movable housing 3 is formed in the reinforcing side wall 8. Has been. When assembling the connector, the movable housing holding jig T2 is inserted from the outside of the fixed housing 2 into the jig insertion hole 8e. Then, since the movable housing holding jig T2 is in contact with the back surface 10d of the top wall 10 of the fixed housing 2 and the movable housing 3, the movable housing 3 is not displaced when the terminal 4 is press-fitted and fixed. Therefore, it is possible to assemble the connector while suppressing the extension of the movable piece 4c. [Selection] Figure 21

Description

  The present invention relates to a movable connector.

  A movable connector is known as a connector for electrically connecting a connection object (for example, a connector) and another connection object (for example, a substrate). The movable connector has a fixed housing, a movable housing, one end side fixed to the fixed housing, the other end side fixed to the movable housing, and a plurality of movable pieces that elastically support the movable housing so that the movable housing can be displaced relative to the fixed housing. Terminal. As an example of such a movable connector, there is known one in which a fixed housing has a cylindrical peripheral wall and a bowl-shaped top wall protruding inward from the upper end of the peripheral wall (see Patent Document 1).

No. 7-33408, FIG.

  In the movable connector, when the connector is assembled, the movable housing is housed in the fixed housing. In this state, one end of the terminal is press-fitted into the terminal fixing portion of the fixed housing, and the other end of the terminal is inserted into the movable housing. By press-fitting into the terminal fixing portion, the two housings and the plurality of terminals are integrated. However, in the accommodating portion formed inside the fixed housing, there are movable gaps for allowing displacement of the movable housing in the width direction (X direction), the front-rear direction (Y direction), and the height direction (Z direction) of the fixed housing. ). For this reason, when the terminal is press-fitted into the terminal fixing portion of the movable housing, the movable housing moves along the Z direction along the press-fitting direction of the terminal until it comes into contact with the rear surface of the bowl-shaped top wall of the fixed housing. The terminal is press-fitted in a state where it is in contact with the back surface of the face wall, and when the press-fitting is completed, the movable piece of the terminal is pulled in the Z direction and greatly expanded. Since the elongation of the movable piece needs to be suppressed to such an extent that plastic deformation does not occur, there is a restriction that the movable gap must be set within a range not exceeding the elastic limit of the movable piece.

  The present invention has been made against the background of the conventional movable connector as described above. An object of the present invention is to provide a movable connector capable of suppressing excessive elongation of the movable piece during connector assembly.

  In order to achieve the above object, the present invention is configured as a movable connector having the following features.

  The present invention provides a movable connector comprising a fixed housing having a housing portion, a movable housing housed in the housing portion, and a plurality of terminals having movable pieces that elastically support the movable housing inside the housing portion so as to be displaceable. The fixed housing includes a pair of short side walls provided at both ends in the arrangement direction of the terminals, a top wall connecting between the upper ends of the pair of short side walls, and a regulation for restricting displacement of the movable housing. It has a jig insertion hole for inserting a tool from the outside, and a reinforcing side wall provided on a longitudinal side surface along the arrangement direction of the terminals and extending from the bottom side of the fixed housing to the top wall.

  According to the present invention, since the jig insertion hole for inserting the jig for regulating the displacement of the movable housing from the outside is formed in the fixed housing, the displacement of the movable housing can be achieved by inserting the jig from the jig insertion hole. Can be regulated. For this reason, when the terminal is press-fitted into the movable housing, the movable housing is not displaced inside the receiving portion of the fixed housing along the press-fitting direction of the terminal, and it is possible to prevent the movable piece of the terminal from being excessively extended. it can. Therefore, unlike the movable connector of the prior art, it is not necessary to set the accommodating portion to be small and the movable gap to be set small due to assembly restrictions. With the present invention, the displacement amount of the movable housing can be set without such restrictions.

  By the way, in the conventional movable connector, the movable housing receives an insertion force for press-fitting the terminal when the connector is assembled, and the insertion force acting on the movable housing is received by the top wall of the fixed housing that contacts the movable housing. Therefore, it is preferable that the fixed housing is provided with a peripheral wall serving as a load-bearing wall that receives insertion force over the entire circumference, that is, a pair of short side walls and a pair of long side walls so that the top wall is not distorted in the Z direction. . However, if the peripheral wall is provided over the entire circumference of the fixed housing, the fixed housing is increased in size. That is, as the wall thickness of the short side wall and the long side wall is provided, the fixed housing bulges outward, and the occupied area on the board and the occupied space above it increase, contrary to the demand for downsizing of electronic devices. There is a problem that it ends up. Therefore, from the standpoint of downsizing the movable connector, it is preferable that the peripheral wall of the fixed housing is partially omitted and the opening is provided while the peripheral wall portion serving as the load bearing wall can be provided. The present invention can meet such a demand.

  That is, the present invention has a reinforcing side wall provided on a longitudinal side surface along the arrangement direction (X direction) of the terminals and extending from the bottom surface side of the fixed housing to the top wall. By providing such a reinforcing side wall from the bottom surface side to the top wall, a part of the peripheral wall of the fixed housing can be omitted. Specifically, as described above, a jig insertion hole is formed in the fixed housing. However, since the reinforcing side wall functions as a load-bearing wall, there is a problem that can occur by providing such a jig insertion hole. For example, when the terminal is press-fitted and fixed to the fixed housing, the deformation that warps the vicinity of the center of the lower hole edge of the jig insertion hole located on the terminal insertion side to protrude in the insertion direction is prevented. Can do. Thus, in the present invention, the jig insertion hole of the fixed housing can be provided in the reinforcing side wall.

  According to the present invention, the reinforcing side wall is provided on one long side surface of the fixed housing, while the other long side surface is provided with a side opening that opens between the pair of short side walls without the side wall. You can also According to this, since there is no wall thickness of the side wall on the other longitudinal side surface of the fixed housing, the fixed housing can be reduced in size and weight. In addition, it is possible to optimize the balance of the center of gravity of the entire movable connector and to effectively dissipate heat inside the movable connector according to the aspect of the side opening.

  About the said side surface opening part, it can be set as the shape which the displaced movable housing can enter. According to this, since the side opening of the fixed housing can be used as a displacement space of the movable housing, it is possible to contribute to downsizing of the fixed housing.

  The reinforcing side wall of the present invention is disposed along the arrangement direction of the terminals, and has a plurality of plate-like vertical walls whose plate surface is along the short direction of the fixed housing.

  According to this, since the reinforcing side wall is arranged along the arrangement direction of the terminals and the plate surface has a plurality of plate-like vertical walls along the short direction of the fixed housing, the plate-like vertical walls are fixed housings. It functions as a bearing wall that is discretely arranged in the X direction. Therefore, when the terminal is press-fitted and fixed to the fixed housing, it is possible to prevent deformation that warps the vicinity of the center of the lower hole edge of the jig insertion hole located on the terminal insertion side so as to protrude in the insertion direction. it can.

  The reinforcing side wall of the present invention has a plate-like lateral wall provided between the plate-like vertical walls.

  By providing the plate-like lateral wall, the weight of the reinforcing side wall can be increased. As a result, the center of gravity of the movable connector can be biased toward the reinforcing side wall with respect to the center in the Y direction, and the movable connector arranged on the substrate before mounting can be made difficult to fall.

  On the inner surface of the reinforcing side wall facing the accommodating portion of the present invention, there is an in-wall accommodating portion that enters the wall thickness of the reinforcing side wall and arranges the movable piece of the terminal.

  According to this, since the inner wall of the reinforcing side wall has the in-wall housing portion that enters the wall thickness of the reinforcing side wall, the housing portion is made smaller than when the movable piece of the terminal is disposed only inside the housing portion of the fixed housing. The entire connector can be reduced in size. The movable piece may be arranged so as to straddle both the accommodating portion and the in-wall accommodating portion, or may be arranged only in the in-wall accommodating portion. In the latter case, the accommodating portion is further reduced. Contributes to miniaturization of the entire connector.

  The inner wall accommodating portion of the present invention has a terminal fixing portion for fixing an end portion of the terminal on the fixed housing side.

  According to this, since there is a terminal fixing portion in the in-wall accommodating portion where the movable piece is arranged, there is no waste in arrangement, and the entire connector can be downsized compared to the case where the terminal fixing portion is provided in addition to the in-wall accommodating portion. Can be planned.

  The reinforcing side wall of the present invention has a plate-like lateral wall provided between the plate-like vertical walls.

  By providing the plate-like lateral wall, the weight of the reinforcing side wall can be increased. As a result, the center of gravity of the movable connector can be biased toward the reinforcing side wall with respect to the center in the Y direction, and the movable connector arranged on the substrate before mounting can be made difficult to fall.

  According to the movable connector of the present invention, the terminal can be press-fitted by inserting a jig for suppressing the displacement of the movable housing through the jig insertion hole of the fixed housing. It is possible to prevent deformation such that the edge of the jig insertion hole that receives pressure input is warped so as to protrude in the terminal insertion direction. As a result, the movable piece of the terminal does not extend excessively in the Z direction along the press-fitting direction of the terminal when assembling the connector, so it is possible to set an appropriate movable gap inside the fixed housing without considering such restrictions It is.

The perspective view containing the front of the movable connector by one Embodiment, a right side, and a plane. The perspective view containing the back surface, right side surface, and plane of the movable connector of FIG. The front view of the movable connector of FIG. The rear view of the movable connector of FIG. The right view of the movable connector of FIG. The top view of the movable connector of FIG. The bottom view of the movable connector of FIG. AA line expanded sectional view of FIG. The BB line expanded sectional view of FIG. FIG. 2 is a perspective view including a front surface, a right side surface, and a flat surface of the fixed housing of FIG. 1. The front view of the fixed housing of FIG. The rear view of the fixed housing of FIG. FIG. 2 is a perspective view including a front surface, a right side surface, and a plane of the movable housing of FIG. 1. The front view of the movable housing of FIG. FIG. 2 is a perspective view including a back surface, a right side surface, and a plane of the movable housing in FIG. 1. The top view of the movable housing of FIG. The bottom view of the movable housing of FIG. The perspective view containing the front of the terminal of FIG. 1, a right side, and a plane. The front view of the terminal of FIG. FIG. 3 is an operation explanatory diagram of the terminal of FIG. 1. Explanatory drawing which shows the assembly method of the movable connector of FIG. The front view which shows the fitting state of the movable connector of FIG. FIG. 23 is an enlarged sectional view taken along line CC in FIG. 22. The operation | movement explanatory drawing of the movable connector shown in FIG. The other operation | movement explanatory drawing of the movable connector shown in FIG.

  Hereinafter, an embodiment of a connector of the present invention will be described with reference to the drawings.

  In the present specification, claims, and drawings, the width direction or the left-right direction of the movable connector 1 shown in FIG. 1 is the X direction, the front-rear direction is the Y direction, and the height direction is the Z direction. Also, the right side in the X direction is “right”, the left side is “left”, the front in the Y direction is “front”, the back is “rear”, the plane in the Z direction is “up”, and the bottom Is described as “below”. However, such specification of left, right, front, back, and top and bottom does not limit the mounting direction and usage direction of the movable connector 1 of the present invention.

Overview of the movable connector 1 The movable connector 1 is composed of a fixed housing 2, a movable housing 3, a plurality of terminals 4 arranged in a row, and a fixing bracket 5. In the fixed housing 2, the movable housing 3 is elastically supported by a plurality of terminals 4 so as to be displaceable. The fixed housing 2 and the movable housing 3 are formed of a resin molded body, and the terminals 4 and the fixed metal fitting 5 are formed of a metal press-molded body, and are subjected to surface processing including plating as necessary. .

  The “connection object” of the movable connector 1 in this embodiment is the pin header P2 (see FIGS. 22 to 24), and the terminal 4 is in conductive contact with the pin-like terminal P3, so that the circuit of the substrate P1 is connected to the pin header P2. Make a conductive connection.

Fixed housing 2
The fixed housing 2 is hollow and is formed in a vertically long box shape in the Z direction, and has a front wall 7 on one longitudinal side surface along the X direction of the peripheral wall 6 and a reinforcement on the other longitudinal side surface. It has a side wall 8. A pair of short side walls 9 is formed on the short side surface along the Y direction of the peripheral wall 6. Reference numeral 10 denotes a top wall, which is formed at the upper end of the peripheral wall 6. A bottom wall 11 is formed at the lower end of the peripheral wall 6. Further, flange portions 12 projecting in the X direction and the Y direction are formed at both ends in the X direction on the lower end side of the peripheral wall 6.

  The front wall 7 is formed as one longitudinal side surface of the fixed housing 2, and a large square frame-shaped side surface opening 7 a is formed. The side opening 7a is formed by lacking a resin wall on the front side that exists if the fixed housing 2 has a closed cross-sectional shape over the entire circumference. Accordingly, the fixed housing 2 is reduced in size by the absence of the wall thickness of the resin wall protruding to the front side, and the occupied area of the substrate P1 is reduced. Furthermore, since the front wall 7 is formed as a flat surface having no protruding portions in the Z direction and the X direction, the occupied space on the substrate P1 is also reduced. Further, the large side opening 7 a has a weight reduction of the entire fixed housing 2 and the movable connector 1 and also has a heat dissipation function inside the fixed housing 2.

  The reinforcing side wall 8 is formed as the other longitudinal side surface of the fixed housing 2, and the vertical wall 8 a as a “plate-shaped vertical wall” that is spaced apart in the arrangement direction of the terminals 4, and the adjacent vertical walls 8 a. And a horizontal wall 8b as a “plate-shaped horizontal wall”. The vertical wall 8a and the horizontal wall 8b are arranged inside the outer frame wall 8c. Thereby, the reinforcement side wall 8 is exhibiting the external appearance as a grid | lattice-like wall. The vertical wall 8a and the horizontal wall 8b are formed in a thin plate shape whose plate surfaces extend in the Y direction, and a total of 15 openings are formed in 3 rows and 5 columns by the combination thereof.

  Of the 15 openings, the inside of the upper opening 8d is hollow. If the inside of the upper opening 8d is solid, the fixed housing 2 is vertically long, so that the high position on the top wall 10 side becomes heavy, and it is also possible that the plurality of terminals 4 are arranged in a row. Thus, the self-supporting posture tends to become unstable when placed on the substrate P1 before mounting. For this reason, the self-standing posture is stabilized by making the inside of the upper opening 8d hollow to reduce the weight. A partition wall 8d1 is formed in the interior of the upper opening 8d (see FIG. 8), and an insertion hole 10a for the pin-like terminal P3 of the pin header P2 that is a “connection object” is formed on the front side of the partition wall 8d1. ing.

  A jig insertion hole 8e for inserting a movable housing holding jig T1 used when the movable connector 1 is assembled is formed under the upper opening 8d (see FIG. 21).

  A lower opening 8f for adjusting the balance of the center of gravity of the fixed housing 2 is formed at the lowest stage below the jig insertion hole 8e. A lower end wall 8g is formed below the lower opening 8f. The lower end wall 8g functions as a terminal fixing wall as will be described later. Although the outer surface side of the lower end wall 8g has a lattice shape, an inner wall accommodating portion 8g1 is formed on the inner surface side (inner side of the fixed housing 2) as shown in FIGS. Specifically, the inner wall accommodating portion 8g1 is formed with a terminal fixing groove 8g2 for press-fitting and fixing a fixing piece 4b of the terminal 4 described later, and an accommodation groove 8g3 for the movable piece 4c of the terminal 4. As shown in FIG. 8, the in-wall accommodating portion 8 g 1 is formed so as to be within the length range in the Y direction of the vertical wall 8 a and the horizontal wall 8 b that form the reinforcing side wall 8. Thus, the fixed housing 2 can be reduced in size in the Y direction by accommodating the in-wall housing portion 8g1 within the wall thickness in the Y direction of the vertical wall 8a and the horizontal wall 8b.

  The short side wall 9 is formed as a short side surface of the fixed housing 2, and is formed as a wall extending along the Y direction at both ends of the front wall 7 and the reinforcing side wall 8. The side is blocked.

  The top wall 10 is formed as the upper surface of the fixed housing 2, and the insertion holes 10a for the pin-like terminals P3 of the pin header P2 are formed in a row. The insertion hole 10a is formed as a long hole having a depth in the Z direction as shown in FIG. When the pin-shaped terminal P3 is inserted into the insertion hole 10a obliquely, if the depth of the insertion hole 10a in the Z direction is shallow, the pin-shaped terminal P3 can be largely inclined inside the insertion hole 10a. However, by forming the insertion hole 10a as a long hole, it is possible to restrict the pin-shaped terminal P3 from coming into contact with the insertion-side end portion and the back-side end portion of the insertion hole 10a and tilting greatly. Therefore, the inclination at the time of the fitting of the pin header P2 and the displacement after the fitting can be corrected.

  A thinned portion 10b is formed next to the insertion holes 10a at both ends, and the top wall 10 is reduced in weight as a whole.

  A flat surface 10c is formed on the back side of the insertion hole 10a, and this functions as a suction space when the movable connector 1 is vacuum-sucked during automatic mounting. The flat portion 10c is formed over the array length of the insertion holes 10a in the X direction, and has a width approximately the same as the wall thickness along the Y direction of the reinforcing side wall 8 (vertical wall 8a, horizontal wall 8b) in the Y direction. Since it is formed as a rectangular plane, it is easy to select a suction location, and strict control of the suction position is unnecessary.

  The bottom wall 11 is formed as a bottom surface of the fixed housing 2, and an insertion port 11 a of the movable housing 3 is formed. When assembling the movable connector 1, the movable housing 3 is inserted from the insertion port 11 a and disposed in the accommodating portion 2 a inside the fixed housing 2.

  The flange portion 12 is formed with a mounting groove 12a of the fixing bracket 5 and a protruding portion 12b toward the back side.

  The mounting groove 12a is disposed in the central portion of the short side wall 9 in the Y direction. Considering that the fixed housing 2 is structurally divided into a portion where the accommodating portion 2a is formed and a portion where the reinforcing side wall 8 is formed, the mounting groove 12a is a pin inserted into the movable housing 3 disposed in the accommodating portion 2a in the Y direction. It arrange | positions in the position on the extension line | wire of the insertion direction of the shaped terminal P3. Here, for example, if the mounting groove 12a is displaced in the Y direction with respect to the position on the extension line, the soldering portion of the fixing bracket 5 to the substrate P1 is not positioned in a straight line with respect to the insertion direction of the pin-shaped terminal P3. For this reason, the insertion force from the oblique direction by the pin-like terminal P3 may act on the soldering portion, thereby causing a crack or the like. Such a problem is likely to occur particularly when the terminals 4 are arranged in a line as in the movable connector 1 of the present embodiment. However, according to the present embodiment, since the soldered portion of the fixing bracket 5 is located on the extended line in the insertion direction of the pin-like terminal P3 in the Y direction, the occurrence of such a problem can be suppressed.

  The protrusion 12b protrudes outward on the back side from the reinforcing side wall 8, and a positioning protrusion 12c for the substrate P1 is formed on the back surface. And the board | substrate connection part 4a of the terminal 4 protrudes from the lower end of the reinforcement side wall 8 between a pair of protrusion parts 12b. However, the board connecting portion 4a does not protrude outward beyond the protruding portion 12b, and is disposed inside the recess 13 formed by a continuous wall of the pair of protruding portions 12b and the lower end of the reinforcing side wall 8, The area occupied by P1 is reduced, and the board connecting portion 4a of the terminal 4 is protected from external force.

Movable housing 3
A body portion 14 and a guide portion 15 are formed in the movable housing 3.

  Inside the main body 14, a contact portion 4d of the terminal 4 is accommodated, and a fitting chamber 14a is formed in which the contact portion 4d is in conductive contact with the pin-like terminal P3 that is a “connection object”. In the present embodiment, five fitting chambers 14a are formed similarly to the insertion hole 10a of the fixed housing 2 described above (see FIG. 8). On the insertion side of the pin-like terminal P3 in each fitting chamber 14a, a guide portion 14b made of an inclined surface narrowed in the insertion direction is formed. Here, when comparing the opening area of the upper end opening edge 14b1 of the guiding portion 14b with the opening area of the lower end opening edge 10a1 of the insertion hole 10a of the fixed housing 2, the former guiding portion 14b is formed larger. As a result, the pin-like terminal P3 inserted into the insertion hole 10a can be reliably guided inside the guiding portion 14b. The lower end opening edge 14b2 of the guiding portion 14b has a size slightly larger than the outer shape of the pin-shaped terminal P3, and can hold the outer periphery of the pin-shaped terminal P3 in the X direction and the Y direction. A terminal fixing groove 14c of the fixing base 4e of the terminal 4 is formed inside the fitting chamber 14a (see FIG. 17).

  The guide portion 15 is formed in a column shape at both end portions of the main body portion 14. The guide portion 15 is formed with a protrusion 15 a that protrudes upward in the Z direction from the main body portion 14. The upper end surface of the protrusion 15a functions as a stopper that stops the upward displacement of the movable housing 3 by contacting the rear surface 10d of the top wall 10 of the fixed housing 2 when the movable housing 3 is displaced upward in the Z direction. To do. Further, the guide portion 15 is formed with a leg portion 15 b that protrudes downward in the Z direction from the main body portion 14. The lower end surface of the leg portion 15b functions as a stopper that stops the downward displacement of the movable housing 3 by contacting the substrate P1 when the movable housing 3 is displaced downward in the Z direction. The side surface 15c of the guide portion 15 along the Z direction abuts against the inner surface 9a of the short side wall 9 of the fixed housing 2 when the movable housing 3 is displaced in the X direction, thereby causing the displacement of the movable housing 3 in the X direction. It functions as a stopper to stop (see FIG. 9). When the movable housing 3 is displaced in the Y direction, the long side wall 14d of the main body 14 is brought into contact with the inner surface 7b of the front wall 7 and the inner surface 8h of the reinforcing side wall 8 of the fixed housing 2, thereby It functions as a stopper that stops displacement in the Y direction.

Terminal 4
The terminal 4 is formed with a substrate connecting portion 4a, a fixed piece 4b, a movable piece 4c, a contact portion 4d, and a fixed base portion 4e.

  The board connecting portion 4a is formed in a flat plate shape, and is soldered to the circuit contacts of the board P1 to be conductively connected. Each board connecting portion 4a is formed with a length that can be disposed inside the concave portion 13 of the fixed housing 2 as described above. Therefore, since it does not protrude outside the flange portion 12, the area occupied by the substrate P1 can be reduced.

  The fixed piece 4b is fixed to the fixed housing 2 by press-fitting the press-fitting protrusion 4b1 into the terminal fixing groove 8g2 of the fixed housing 2. Therefore, the fixed piece 4 b becomes a fixed portion for the fixed housing 2 on one end side of the terminal 4.

  The movable piece 4c includes a first longitudinally extending portion 4c1 extending upward in the Z direction, a folded portion 4c2, a second vertically extending portion 4c3 extending downward in the Z direction, and a laterally extending portion extending in the Y direction. 4c4 and a third longitudinal extension 4c5 extending from the end of the lateral extension 4c4 to the fixed base 4e. An inverted U-shaped spring piece is formed by the first vertical extension part 4c1, the folded part 4c2, and the second vertical extension part 4c3, and an L-shaped spring piece is formed by the horizontal extension part 4c4 and the third vertical extension part 4c5. As a result, the softness and fatigue durability of the spring necessary for the elastic displacement of the movable housing 3 in the three-dimensional direction are realized. In particular, the folded portion 4c2 and the lateral extension portion 4c4 are formed wider than the three vertical extension portions 4c1, 4c3, 4c5, thereby suppressing stress concentration in shape and improving fatigue durability. Yes.

  Further, the movable piece 4c is such that the entire first longitudinally extending portion 4c1 and half of the folded portion 4c2 are positioned in the accommodation groove 8g3 of the reinforcing side wall 8 (see FIG. 8), and the second portion extends from the top of the folded portion 4c2. The side of the vertically extending portion 4 c 3 is located in the accommodating portion 2 a of the fixed housing 2. If the inverted U-shaped spring piece as a whole is arranged in the accommodating portion 2a of the fixed housing 2, the fixed housing 2 is enlarged as a whole in the Y direction. The fixed housing 2 can be reduced in size in the Y direction by being positioned inside (by providing the accommodation groove 8g3). As described above, while the inverted U-shaped spring piece is disposed in a compact manner, the laterally extending portion 4c4 extends to the back surface side of the front wall 7 with respect to the L-shaped spring piece described above. It is made to connect with the fixed base part 4e through the vertical expansion | extension part 4c5. That is, by effectively utilizing the lower space of the accommodating portion 2a below the fixed base portion 4e of the terminal 4, a long spring length in the Y direction and the Z direction is ensured to realize flexibility and fatigue durability. ing. As a result, the accommodating portion 2a itself can be formed compactly.

  The fixed base portion 4 e serves as a fixed portion for the movable housing 3 on the other end side of the terminal 4. The fixed base 4e is formed with a pair of facing fixed pieces 4e1, 4e2 and a connecting piece 4e3 that connects the fixed pieces 4e1, 4e2. The fixed pieces 4 e 1 and 4 e 2 are formed with press-fitting protrusions 4 e 4, and the fixed base 4 e is fixed to the movable housing 3 by being press-fitted into the terminal fixing grooves 14 c of the movable housing 3.

  The contact portion 4d is formed of a contact piece 4d1 extending from the fixed piece 4e1 on the front side of the fixed base 4e and a contact piece 4d2 extending from the fixed piece 4e2 on the back side. Each contact piece 4d1, 4d2 includes a spring piece 4d3 extending from the fixed pieces 4e1, 4e2, a constricted bent part 4d4, a contact part 4d5 made of a roll surface that is in conductive contact with the pin-like terminal P3 to be “connected”, a pin A tip portion 4d6 for guiding insertion of the terminal P3 is formed.

  The constricted bent portion 4d4 has a shape that can be constricted in the direction opposite to the contact direction with the pin-shaped terminal P3 by the contact portion 4d5 continuously with the bent shape of the contact portion 4d5. When the contact portion 4d5 and the constricted bent portion 4d4 are combined, a slender S-shape is exhibited as a whole. The constricted bent portion 4d4 avoids surface contact with the contact pieces 4d1 and 4d2 and maintains line contact along the plate width direction at the contact portion 4d5 even when the insertion posture of the pin-like terminal P3 is inclined. Function. This function is an important function for the movable connector 1 in which the terminals 4 are arranged in a line as in the present embodiment.

  FIG. 20A shows a contact piece A of a comparative example that differs only in that there is no constricted bent portion 4d4. In the movable connector 1 in which the terminals 4 are arranged in a row, when the movable housing 3 is displaced, the contact piece A and the pin-like terminal P3 rotate relatively to assume an oblique posture. At this time, the pin-like terminal P3 comes into surface contact with the contact piece A, so that the contact pressure is reduced, the holding force of the pin-like terminal P3 is lowered, and stable conduction contact cannot be obtained.

  On the other hand, as shown in FIG. 20B, in the contact pieces 4d1 and 4d2 of this embodiment having the constricted bent portion 4d4, the pin-shaped terminal P3 and Since the gap d1 is formed by the constricted bent portion 4d4 between the spring piece 4d3, the pin-like terminal P3 does not come into surface contact with the spring piece 4d3, and the line contact by the contact portion 4d5 can be maintained. Therefore, even if the terminals 4 are the movable connectors 1 arranged in a row, a decrease in contact pressure at the contact portion 4d5 when the movable housing 3 is displaced can be suppressed, and reliable conductive contact with the pin-shaped terminal P3. Can be maintained.

Explanation of assembly method (Fig. 21)
As shown in FIG. 21, the movable housing holding jig T1 is inserted from the jig insertion hole 8e of the fixed housing 2, and the tip end side is projected from the side opening 7a. A fixed housing holding jig T <b> 2 is disposed on the top wall 10 of the fixed housing 2. In this state, the movable housing 3 is inserted from the insertion port 11a of the bottom wall 11 of the fixed housing 2 and is positioned in the accommodating portion 2a.

  Next, the five terminals 4 are press-fitted and fixed to the fixed housing 2 and the movable housing 3 using a terminal holding jig (not shown). That is, the terminal 4 is inserted from the insertion port 11a of the bottom wall 11 of the fixed housing 2, the press-fitting protrusion 4b1 of the fixed piece 4b is press-fitted into the terminal fixing groove 8g2 of the fixed housing 2, and the fixed pieces 4e1, 4e2 of the fixed base 4e. The press-fitting protrusion 4e4 is press-fitted into the terminal fixing groove 14c of the movable housing 3. As a result, the terminal 4 is fixed to the fixed housing 2 and the movable housing 3.

  As described above, when the fixing piece 4 b of the terminal 4 is press-fitted into the terminal fixing groove 8 g 2 of the fixed housing 2, an insertion force along the press-fitting direction of the terminal 4 is applied to the fixed housing 2. This insertion force is applied not only to the short side wall 9 of the fixed housing 2 but also to the top surface wall 10 by using a plurality of vertical walls 8a of the reinforcing side wall 8 formed from the bottom wall 11 side to the top wall 10 as load bearing walls. Communicated. If there is no vertical wall 8a, the insertion force of the terminal 4 is received by the horizontal wall 8b that forms the upper surface of the lower end wall 8g that is the lower edge of the lower opening 8f. There is a risk of deformation to protrude and warp in the direction. However, in this movable connector 1, the vertical wall 8 a functions as a “post” between the horizontal wall 8 b and the top wall 10, so that the fixed housing 2 is not deformed to be warped or damaged. The fixing pieces 4b of the plurality of terminals 4 can be reliably pressed and fixed simultaneously into the terminal fixing grooves 8g2 of the fixing housing 2. Further, since the fixed housing 2 has such a load-bearing wall, a side opening 7a lacking a resin wall can be formed on the front wall 7 for downsizing and the like.

  Further, when the fixed pieces 4 e 1 and 4 e 2 of the terminal 4 are press-fitted into the terminal fixing grooves 14 c of the movable housing 3, the above-described insertion force is also applied to the movable housing 3. However, the insertion force of the movable housing 3 is in contact with the movable housing holding jig T1 inserted into the fixed housing 2, and the movable housing holding jig T1 is further against the back surface 10d of the top wall 10 of the fixed housing 2. Due to the contact, the movable housing 3 can receive the top surface wall 10. Thus, since the displacement of the movable housing 3 is regulated by the movable housing holding jig T1, the fixed pieces 4e1, 4e2 of the terminal 4 are pressed into the terminal fixing grooves 14c without excessively deforming the movable piece 4c. Can be fixed. Therefore, unlike the conventional movable connector, it is not necessary to set the movable gap d2 of the accommodating portion 2a small due to assembly restrictions, so that the displacement amount of the movable housing 3 can be set without taking assembly restrictions into consideration. Is possible.

  In addition to the above, the movable connector 1 can be assembled by press-fitting the fixing bracket 5 into the mounting groove 12 a of the flange portion 12.

Description of usage [FIGS. 22-24]
The movable connector 1 is mounted on the substrate P1. That is, the movable connector 1 is transported to a predetermined position on the substrate P1, with the flat portion 10c of the top wall 10 of the fixed housing 2 being sucked and held by the vacuum suction nozzle of the automatic mounting machine. Then, the positioning protrusion 12c of the flange portion 12 is inserted into the positioning hole of the substrate P1 and positioned, and the substrate connecting portion 4a of the terminal 4 and the fixing bracket 5 are soldered.

  By the way, since the movable connector 1 has terminals 4 arranged in a row and has a tall housing shape in the Z direction, the movable connector 1 tends to fall down. In particular, the front wall 7 side lacks a structural element that stabilizes the posture, such as the protruding portion 12b of the flange portion 12, and the board connecting portion 4a of the terminal 4 does not exist on the front wall 7 side. There is concern about the wall 7 falling over. However, the movable connector 1 of this embodiment can maintain a stable standing posture even when placed on the board P1 by the automatic mounting machine as described above. That is, the lateral wall 8b is formed on the reinforcing side wall 8, and the reinforcing side wall 8 is heavier as a whole due to the weight of the lateral wall 8b. As a result, the center of gravity of the movable connector 1 in the Y direction is located between the positioning projection 12 c and the fixing bracket 5. As described above, the horizontal wall 8b is used as the center of gravity adjustment wall, and the position of the center of gravity of the movable connector 1 is shifted from the center position in the Y direction toward the reinforcing side wall 8 so as to be biased. The fall of 1 is prevented.

  As shown in FIGS. 22 and 23, the pin header P2 that is a “connection object” is fitted and connected to the movable connector 1 mounted on the board P1 as described above. That is, the pin-shaped terminal P3 is inserted from the insertion hole 10a of the top wall 10 of the fixed housing 2, and is further inserted into the guiding portion 14b having a large opening area under the movable housing 3. The pin-like terminal P3 is guided by the inclined surface of the guide portion 14b and inserted into the fitting chamber 14a, and the contact pieces 4d1 and 4d2 are expanded while being guided by the tip portion 4d6 to be in conductive contact with the contact portion 4d5. Thus, the pin header P2 is fitted and connected to the movable connector 1.

  In the movable connector 1, for example, as shown in FIG. 24, the movable housing 3 is elastically displaced by the movable piece 4c of the terminal 4 within the range of the movable gap d2 inside the accommodating portion 2a. Further, as shown in FIG. 25, the movable housing 3 can be elastically displaced so as to enter the side opening 7a. In this way, the displacement of the fitting position of the pin-like terminal P3 inserted obliquely at the time of fitting is absorbed, and the deviation of the fitting position between the pin header P2 and the movable connector 1 in the initial fitting is absorbed. Vibrations and the like in a later use state can be absorbed by the elastic displacement of the movable housing 3. Further, since the side opening 7 a of the fixed housing 2 can be used as a displacement space of the movable housing 3, it is possible to contribute to downsizing of the fixed housing 2.

Description of Modified Example In the above- described embodiment, the example in which the number of the terminals 4 is five is shown, but the number may be smaller or larger. In the embodiment, the example in which the lateral wall 8b is provided on the reinforcing side wall 8 to adjust the balance of the center of gravity has been described. However, from the viewpoint of reinforcement, the vertical wall 8a may be provided, and therefore the lateral wall 8b may be omitted. In the said embodiment, although the structure which accommodates the 1st vertical expansion | extension part 4c1 and the folding | returning part 4c2 half of the movable piece 4c of the terminal 4 in the in-wall accommodating part 8g1, the 1st vertical expansion | extension part 4c1 and the folding | returning part 4c2 were illustrated. The second longitudinally extending portion 4c3 may be configured to be housed in the in-wall housing portion 8g1.

DESCRIPTION OF SYMBOLS 1 Movable connector 2 Fixed housing 2a Housing | casing part 3 Movable housing 4 Terminal 4a Board | substrate connection part 4b Fixed piece 4b1 Press-fit protrusion 4c Movable piece 4c1 1st vertical extension part 4c2 Folding part 4c3 2nd vertical extension part 4c4 Horizontal extension part 4c5 1st 3d longitudinally extending portion 4d contact portion 4d1 contact piece 4d2 contact piece 4d3 spring piece 4d4 constricted bent portion 4d5 contact portion 4d6 tip portion 4e fixing base portion 4e1, 4e2 fixing piece 4e3 connecting piece 4e4 press-fitting protrusion 5 fixing bracket 6 peripheral wall 7 front wall 7a Side opening 7b Inner surface 8 Reinforcing sidewall 8a Vertical wall (plate-shaped vertical wall)
8b Horizontal wall (plate-shaped horizontal wall)
8c Outer frame wall 8d Upper opening 8d1 Bulkhead 8e Jig insertion hole 8f Lower opening 8g Lower end wall 8g1 In-wall housing portion 8g2 Terminal fixing groove (terminal fixing portion)
8g3 Housing groove 8h Inner surface 9 Short side wall 9a Inner surface 10 Top surface wall 10a Insertion hole 10a1 Lower end opening edge 10b Thickening portion 10c Flat surface portion 10d Back surface 11 Bottom wall 11a Insertion port 12 Flange portion 12a Mounting groove 12b Projection portion 12c Positioning projection 13 Concave portion 14 Main body portion 14a Fitting chamber 14b Lead-in portion 14b1 Upper end opening edge 14b2 Lower end opening edge 14c Terminal fixing groove 14d Long side wall 15 Guide portion 15a Protrusion 15b Leg portion 15c Side surface P1 Substrate P2 Pin header (object to be connected)
P3 pin terminal (object to be connected)
T1 movable housing holding jig T2 fixed housing holding jig d1 gap d2 movable gap

Claims (5)

A fixed housing having a receiving portion;
A movable housing accommodated in the accommodating portion;
In a movable connector comprising a plurality of terminals having movable pieces that elastically support the movable housing so as to be displaceable inside the housing portion,
The fixed housing is
A pair of short side walls provided at both ends in the arrangement direction of the terminals;
A top wall connecting between the upper ends of the pair of short side walls;
A jig insertion hole for inserting a jig for regulating the displacement of the movable housing from the outside;
Provided on the longitudinal side surface along the arrangement direction of the terminals, and having a reinforcing side wall from the bottom surface side of the fixed housing to the top wall,
The jig insertion hole is provided in the reinforcing side wall,
The movable connector is characterized in that an upper surface of the movable housing is positioned within a height range of the jig insertion hole and can contact the jig inserted into the jig insertion hole.
The reinforcing side wall is disposed along the arrangement direction of the terminals, and between the plate-like vertical walls and a plurality of thin plate-like vertical walls whose plate surfaces extend along the short direction of the fixed housing. The movable connector according to claim 1, wherein the movable connector has a plate-like lateral wall provided in the grid.
The reinforcing side wall is provided on one longitudinal side surface of the fixed housing along the arrangement direction of the terminals,
3. The movable connector according to claim 1, wherein the other long side surface of the fixed housing has a side surface opening portion that is open between the pair of short side walls without a side wall.
The movable connector according to claim 3, wherein the side opening is formed in a shape into which the displaced movable housing is inserted.
The top wall has an insertion hole for a connection object to be inserted into the movable housing,
The said insertion hole controls the displacement which the said connection target object contact | abuts when the said movable housing which inserted the said connection target object inclines, and the said movable housing inclines. Movable connector.

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