JP4782024B2 - Electronic junction box and its assembly method - Google Patents

Description

  The present invention relates to an electronic junction box and an assembling method thereof.

  Conventionally, in an electronic junction box in which a connector is attached to a side wall of a housing body that stores electronic devices such as control devices for various devices, in addition to a one-piece structure in which a housing and a connector are integrally formed, A two-piece structure has been proposed in which a housing and a connector configured separately are connected (see, for example, Patent Document 1).

  FIG. 14 is a diagram showing the structure of a conventional two-piece electronic junction box.

  In the figure, reference numeral 801 denotes a casing of an electronic connection box that houses an electronic device (not shown), and reference numeral 802 denotes a connector attached to the casing 801. The connector 802 includes a housing 803 made of an insulating material such as a synthetic resin and a plurality of terminals 804 made of a conductive material such as metal and attached to the housing 803.

The housing 801 includes an opening 805 formed on the side wall, and a connector 802 is attached from the inside of the housing 801 so as to close the opening 805. In this case, a cylindrical seal portion 806 is integrally formed in the opening 805, and a waterproof effect is exhibited when the seal portion 806 and the seal member 811 provided in the mating connector 810 are in close contact. A key groove (not shown) is formed on the inner wall of the opening 805, and a key part (not shown) formed on the outer wall of the housing 803 is fitted into the key groove, whereby a connector for the opening 805 is inserted. Positioning 802 is performed.
Japanese Patent Laid-Open No. 7-263069

  However, in the conventional electronic junction box, since the opening 805 including the seal portion 806 and the housing 803 to which the terminal 804 is attached are separate members, a seal that is in close contact with the seal member 811 of the mating connector 810. It is relatively difficult to maintain the positional relationship between the portion 806 and the terminal 804 connected to the mating terminal of the mating connector 810 with high accuracy. In order to maintain the positional relationship between the seal portion 806 and the terminal 804 with high accuracy, it is necessary to form each portion of the opening 805 and the connector 802 including the key groove and the key portion with high accuracy. Is difficult to manufacture, and the manufacturing cost is high.

  The present invention solves the problems of the conventional electronic junction box, and guide ribs for positioning pins connecting the first connector and the second connector, the inner surface of the concave portion in the first connector, and the electronic By forming the protrusions formed on the inner surface of the cylindrical portion of the connection box, the members can be manufactured and assembled easily and at low cost, and the pins can be positioned with high accuracy. An object of the present invention is to provide an electronic junction box that can be easily connected to a second connector and an assembly method thereof.

  For this purpose, the electronic junction box of the present invention is an electronic junction box that houses therein one or more electronic devices that can be connected to an external circuit, and electrically connects the electronic device and the external circuit. The first connector is a receptacle shape, and includes a concave portion as a fitting portion disposed in the cylindrical portion, A second connector provided with a convex portion as a fitting portion and a ridge formed on the inner surface of the concave portion and a ridge formed on the inner surface of the opening, which can be fitted together in the cylindrical portion. Are aligned with each other to form one strip, and serve as guide ribs for positioning the pins of the first connector and the second connector connected to each other.

  In another electronic junction box of the present invention, the ridge formed on the inner surface of the concave portion further includes a guide portion formed on a portion near the ridge formed on the inner surface of the opening.

  In still another electronic junction box of the present invention, the guide portion is formed by chamfering.

  In still another electronic junction box according to the present invention, the protrusions formed on the inner surface of the concave portion and the protrusions formed on the inner surface of the opening are each plural.

  In still another electronic junction box of the present invention, the ridge formed on the inner surface of the concave portion and the ridge formed on the inner surface of the opening are respectively located at opposing portions.

  In still another electronic junction box according to the present invention, the protrusion formed on the inner surface of the concave portion and the protrusion formed on the inner surface of the opening prevent erroneous insertion of the second connector.

  The electronic junction box assembly method of the present invention is an electronic junction box assembly method for storing therein one or more electronic devices that can be connected to an external circuit, and electrically connects the electronic device and the external circuit. A concave portion as a fitting portion of the first connector is disposed from the inside of the electronic connection box in the opening reaching the outside of the cylindrical portion of the electronic connection box, and is formed on the inner surface of the concave portion The protrusions and the protrusions formed on the inner surface of the opening are aligned to form a single stripe, and a jig is inserted into the opening and the concave portion from the outside of the electronic junction box to thereby adjust the alignment state of the protrusions. Position it.

  In another method for assembling an electronic junction box according to the present invention, an electronic junction box assembly method for housing at least one electronic device that can be connected to an external circuit, wherein the tubular portion of the electronic junction box is provided. Inserting a jig from the outside of the electronic junction box into the opening leading to the outside, and forming a concave portion as a fitting portion of a first connector for electrically connecting the electronic device and an external circuit in the opening. It arrange | positions from the inside of an electronic junction box, aligns and positions the protrusion formed in the inner surface of the said recessed part, and the protrusion formed in the inner surface of the said opening, and forms one strip.

  According to the present invention, the electronic junction box has guide ribs for positioning pins that connect the first connector and the second connector, the inner surface of the concave portion of the first connector, and the cylindrical portion of the electronic junction box. It is formed by aligning the protrusions formed on the inner surface. Thereby, manufacture and assembly of each member are easy, the cost is low, pin positioning can be performed with high accuracy, and the second connector can be easily connected.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  1 is a first perspective view of an electronic junction box according to an embodiment of the present invention, FIG. 2 is a second perspective view of an electronic junction box according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. FIG. 4 is a perspective view of a cylindrical portion before attaching the first connector in the embodiment of the present invention, and FIG. 5 is a perspective view of the first connector in the embodiment of the present invention. FIG. 6 is a side sectional view of the cylindrical portion to which the first connector according to the embodiment of the present invention is attached, and is a sectional view taken along line YY in FIG. 5, and FIG. 7 is the present invention. FIG. 8 is a side cross-sectional view of the cylindrical portion to which the first connector is attached in the embodiment, and is a cross-sectional view taken along the line ZZ in FIG. 5, and FIG. It is a perspective view which shows the state before the connector fitting. In FIGS. 3 and 4, (a) and (b) are views seen obliquely from above and obliquely below. 6 and 7, (a) is an overall view, and (b) is an enlarged view of portions A and B.

  In the figure, reference numeral 1 denotes an electronic junction box according to the present embodiment, which has an electronic device and a housing 10 that houses the electronic device. Here, the electronic device includes a substrate 91 on which a control element such as a CPU and MPU and a storage element such as a memory are mounted. For example, an automobile engine, an AT (automatic transmission), an ABS (anti-lock brake system), etc. Although it is ECU (Electronic Control Unit) for controlling A, it may be used for any use and may be of any kind. In the figure, only a part of the substrate 91 is shown. Moreover, the said electronic device can be connected with an external circuit, and may be single and plural.

  The casing 10 includes a bottomed concave body 11 having an opening on one side (upper side in FIGS. 1 and 2) and a lid (lid) (not shown) that seals the opening in a watertight manner. In the example shown in the figure, the main body 11 has a rectangular box shape integrally formed of an insulating material such as a synthetic resin or a metal material, and is formed upward from each side of the rectangular bottom plate 12 and the bottom plate 12. However, it may have any shape as long as it has a bottomed concave shape. The lid is a plate member that is integrally formed of the same material as the main body 11 and has substantially the same shape as the bottom plate 12, and has an opening at the upper end of the housing 10. It is attached so as to be sealed and watertight. In addition, in the figure, illustration of the said cover body is abbreviate | omitted for convenience of describing the inside of the housing | casing 10. FIG. Further, the lid body is formed of the same material as that of the main body 11 as long as it satisfies the required performance such as shielding performance of electromagnetic noise generated by internal electronic equipment, thermal conductivity, rigidity, and the like. Not necessarily.

  Further, in the present embodiment, the expressions indicating directions such as upper, lower, left, right, front, rear, etc. used for explaining the configuration and operation of each part of the electronic junction box 1 are absolute. Relative and appropriate, when each part of the electronic junction box 1 is in the posture shown in the figure, but when the posture changes, it is changed and interpreted according to the change in posture It should be.

  A receptacle-shaped first connector 40 that electrically connects the electronic device and an external circuit is connected to one end of the substrate 91. As shown in detail in FIG. 3, the first connector 40 includes a terminal support member 41 that is integrally formed of an insulating material such as a synthetic resin and supports the first connector terminal 61 as a pin. . The terminal support member 41 is a substantially rectangular plate-like member, and a plurality of terminal support holes (holes) are formed so as to penetrate in the thickness direction. A metal or the like is formed in each terminal support hole. Each of the first connector terminals 61 made of a conductive material is inserted and supported.

  Here, the first connector terminal 61 has a main body portion 66 that is partially inserted and attached to the terminal support member 41, and a leg portion 68 that extends at a predetermined angle with respect to the main body portion 66. . In the present embodiment, as shown in FIGS. 2, 3 and 6, the first connector terminal 61 has a substantially L-shape, the main body 66 extends in the horizontal direction, The portion 68 is bent at a right angle at the rear end (right end in FIG. 6) of the main body portion 66 and extends in the vertical direction. The main body portion 66 of the first connector terminal 61 has a connection portion 64 on the tip side (the end opposite to the leg portion 68) protruding from the terminal support member 41, and the second connector 101 as a mating connector. Is electrically connected to a second connector terminal as a pin included in the. Further, the leg portion 68 of the first connector terminal 61 protrudes downward, and the lower end portion 62 of the first connector terminal 61 is inserted into a through hole as a connection hole of the substrate 91 and soldered or press-fitted, whereby the substrate 91 It functions as a substrate connecting portion that is electrically connected to a conductive trace (not shown) formed on the substrate.

  In the example shown in FIG. 8, the second connector 101 is a cable connector connected to the end of a conductive cable 191 composed of a plurality of conductive wires, but is connected to the first connector terminal 61. A board connector connected to a board such as a circuit board may be used as long as it has a second connector terminal and is watertightly fitted to the cylindrical portion 21 of the electronic junction box 1. There may be. Here, the second connector 101 includes the opening 23 of the cylindrical portion 21 and the first connector 40 disposed in the opening 23 from the outside of the housing 10. The convex protrusion 112 as a fitting part inserted in the concave part 46 as a fitting part with which this fitting protrusion 43 is provided. Further, a positioning groove 114 and an inversion prevention groove 115 as guide grooves extending in the insertion / extraction direction are formed on the surface of the convex portion 112 facing the inner surfaces of the cylindrical portion 21 and the concave portion 46.

  In this case, the second connector 101 includes a housing 111 integrally formed of an insulating material such as synthetic resin, and the fitting end side of the housing 111 is a convex portion 112. A plurality of insertion ports 113 into which the connection portions 64 of the first connector terminals 61 are inserted are formed on the fitting end surface of the convex portion 112, and the connection of the first connector terminals 61 is inserted into the insertion ports 113. A second connector terminal connected to the portion 64 is provided. An engagement lever 121 having an engagement hole 121 a that engages with the engagement protrusion 22 is rotatably attached to the side surface of the housing 111. Further, an annular seal member 125 is attached to the base of the convex portion 112 so as to surround the outer periphery of the convex portion 112.

  In the present embodiment, the number of first connector terminals 61 is, for example, 48, but can be changed as appropriate. Further, the first connector terminals 61 are arranged in the width direction (lateral direction in FIG. 7) so as to form, for example, 12 rows, but the number of the rows is appropriately changed as necessary. can do. Further, the first connector terminal 61 can be divided into a plurality of types depending on the length, for example, consisting of four types of first connector terminals 61, which can be any number of types. Good. In the example shown in the figure, there are 12 rows of four types of first connector terminals 61. In addition, in the same row | line | column, the 1st connector terminal 61 of each kind is arrange | positioned so that the same plane extended in the front-back and an up-down direction (left-right and up-down direction in FIG. 6) may be comprised.

  As shown in FIG. 6, the longest first connector terminal 61 is attached so that the main body portion 66 is positioned highest and the leg portion 68 is positioned most rearward, and the second longest connector terminal 61 is the main body portion. 66 is positioned lower than the longest and leg 68 is positioned forward of the longest, and the third longest is the body 66 is positioned lower than the second longest. 68 is attached so that it is positioned forward of the second longest one, and the shortest one is attached such that the main body 66 is positioned lowest and the legs 68 are positioned forward.

  The terminal support member 41 includes an alignment plate support portion 41a that is integrally formed so as to protrude rearward from the rear surface. The alignment plate support portion 41a includes a leg of the first connector terminal 61. An alignment plate 47 is attached to hold the portion 68 in an aligned state. The alignment plate 47 is a rectangular plate member extending in the horizontal direction, and includes a plurality of guide holes that guide the leg portions 68 of the first connector terminals 61. The guide holes are formed in the same arrangement as the through holes of the substrate 91. The guide hole is formed to penetrate the alignment plate 43, and the leg portion 68 of the first connector terminal 61 is inserted therein.

  Further, as shown in FIG. 3, the terminal support member 41 includes a flange 42 that protrudes sideways and is integrally formed so as to surround the periphery thereof. The front surface of the flange 42 (the left side surface in FIG. 6) extends along the inner surface of the side wall 14 when the first connector 40 is attached to the housing 10 as shown in FIGS. In contact with the inner surface. The inner surface of the side wall 14 with which the front surface of the flange 42 abuts is the peripheral edge of the opening 23 of the tubular portion 21 formed in the side wall 14 so as to penetrate the side wall 14.

  Further, the terminal support member 41 includes a cylindrical fitting protrusion 43 that is integrally formed so as to protrude forward from the front surface (left side surface in FIG. 6). The fitting protrusion 43 includes a concave portion 46, and the connection portion 64 protruding from the terminal support member 41 is located in the concave portion 46. The opening 23 of the cylindrical portion 21 is provided with a step portion 26 in the middle, and a portion in front of the step portion 26 has a small cross section and a portion in the rear of the step portion 26 has a large cross section. Yes. The position of the step portion 26 corresponds to the position of the tip of the fitting protrusion 43 when the first connector 40 is attached to the housing 10 as shown in FIGS. In this state, the fitting protrusion 43 is inserted into a portion rearward of the step portion 26 having a large cross section in the opening 23, and has substantially the same size as the cross section of the portion in front of the step portion 26 in the opening 23. The concave portion 46 having a cross section is integrated with a portion of the opening 23 in front of the step portion 26 to form a concave portion having a size for accommodating the entire convex portion 112 of the second connector 101.

  Here, as shown in FIG. 4, the tubular portion 21 is formed integrally with the side wall 14 so as to extend outward, and has a substantially square tubular shape. Moreover, the opening 23 in the cylindrical part 21 is provided with a substantially rectangular cross-sectional shape. Then, on the upper and lower outer surfaces of the cylindrical portion 21, the engagement protrusions 22 that engage with the engagement holes 121a of the engagement lever 121 provided in the second connector 101 are formed so as to protrude outward. .

  Further, on the upper and lower inner surfaces of the opening 23, a positioning protrusion 24 and a reverse prevention protrusion 25 are integrally formed as protrusions. The positioning protrusion 24 is disposed at the center in the width direction of the opening 23, and the reverse prevention protrusion 25 is disposed on both sides of the positioning protrusion 24. The arrangement of the positioning groove 114 and the inversion prevention groove 115 formed in the convex portion 112 of the second connector 101 corresponds to the arrangement of the positioning protrusion 24 and the inversion prevention protrusion 25. Thereby, when inserting the said convex-shaped part 112 in the opening 23, the positioning groove | channel 114 and the inversion prevention groove | channel 115, the positioning protrusion 24, and the inversion prevention protrusion 25 can be engaged.

  It should be noted that the distance between the inversion prevention protrusions 25 and the positioning protrusions 24 on both sides is set to be non-uniform, and similarly, the interval between the inversion prevention grooves 115 and the positioning grooves 114 on both sides is also made non-uniform. Is set. Therefore, when the second connector 101 is turned upside down, that is, when the second connector 101 is inverted with respect to the normal posture, the positions of the anti-inversion groove 115 and the anti-inversion protrusion 25 do not correspond to each other. 112 cannot be inserted into the opening 23. Thereby, it can be reliably prevented that the second connector 101 is fitted to the electronic junction box 1 in an inverted state, that is, erroneous insertion.

  Further, the positioning ridge 24 and the inversion prevention ridge 25 are disposed only in a portion of the opening 23 in front of the step portion 26. And the position of the rear end of the positioning protrusion 24 and the reverse prevention protrusion 25 corresponds to the position of the step portion 26 as shown in FIG. In the example shown in the figure, the positioning protrusions 24 are arranged one by one in the center in the width direction on the upper and lower inner surfaces of the opening 23, and the inversion preventing protrusions 25 are positioned on the upper and lower inner surfaces of the opening 23. Although one each is provided on both sides of the ridge 24, the number and position of the reverse ridge 25 and the positioning ridge 24 can be changed as necessary. Further, the corners around the front ends of the inversion preventing protrusion 25 and the positioning protrusion 24 can be chamfered as necessary.

  On the other hand, as shown in FIG. 3, the fitting projection 43 has a substantially rectangular tube shape, and the concave portion 46 in the fitting projection 43 has a substantially rectangular cross-sectional shape. And since the outer surface of the fitting projection 43 has a shape corresponding to the shape of the inner surface of the portion of the opening 23 behind the step portion 26, the fitting projection 43 can be inserted into the portion of the opening 23 behind the step portion 26. ing.

  In addition, a positioning protrusion 44 and a reverse prevention protrusion 45 as protrusions are integrally formed on the upper and lower inner surfaces of the concave portion 46. And the position regarding the width direction of the positioning protrusion 44 and the reversal prevention protrusion 45 corresponds to the position of the positioning protrusion 24 and the reversal prevention protrusion 25 with respect to the width direction of the tubular portion 21. Therefore, as shown in FIGS. 6 and 7, in the state where the first connector 40 is attached to the housing 10, the positioning protrusion 44 and the inversion prevention protrusion 45, and the corresponding positioning protrusion 24 and the inversion prevention protrusion The strips 25 are aligned with each other to form one protrusion, that is, one strip. The one line functions as a guide rib for positioning the first connector terminal 61 of the first connector 40 and the second connector terminal of the second connector 101. Accordingly, when the convex portion 112 is inserted into the opening 23, the positioning groove 114 and the inversion prevention groove 115 become the positioning protrusion 24, the inversion prevention protrusion 25, the positioning protrusion 44, and the inversion prevention protrusion 45. Engage.

  The front ends of the positioning protrusion 44 and the inversion prevention protrusion 45 are located at the front end of the fitting protrusion 43. Therefore, in the state where the first connector 40 is attached to the housing 10, the gap (bending) generated between the positioning ridge 44 and the inversion prevention ridge 45 and the corresponding positioning ridge 24 and the inversion prevention ridge 25. ) Is very small.

  Further, guide portions formed by chamfering around the front ends of the positioning ridges 44 and the reversal prevention ridges 45, that is, the portions near the positioning ridges 24 and the reversal prevention ridges 25 of the tubular portion 21. 44a and 45a are formed. Accordingly, as shown in FIGS. 6 and 7, even if the positioning protrusion 44 and the reverse prevention protrusion 45 and the corresponding positioning protrusion 24 and the reverse prevention protrusion 25 are not perfectly aligned, By the guide portions 44a and 45a, the positioning groove 114 and the inversion prevention groove 115 of the convex portion 112 can be smoothly guided and guided. Therefore, since the leading end of the convex portion 112 collides with the joint between the positioning protrusion 44 and the reversal prevention protrusion 45 and the positioning protrusion 24 and the reversal prevention protrusion 25, so-called dough does not occur. The poor fitting between the connector 40 and the second connector 101 can be prevented.

  The guide portions 44a and 45a are formed sufficiently larger than the amount of deviation caused by the misalignment between the positioning ridge 44 and the reversal prevention ridge 45 and the positioning ridge 24 and the reversal prevention ridge 25. Further, the guide portions 44a and 45a are not necessarily inclined planes, and may be curved surfaces with a rounded shape, for example.

  In designing and manufacturing the housing 10, the positioning protrusion 24 formed on the inner surface of the opening 23 of the cylindrical portion 21 is used as a reference for positioning each portion of the cylindrical portion 21. That is, the accuracy of each part of the cylindrical portion 21, for example, the shape and size of the front end of the opening 23 and the shape and size of the inner surface of the opening 23 are determined based on the distance from the positioning protrusion 24. . Similarly, in designing and manufacturing the first connector 40, the positioning protrusion 44 formed on the inner surface of the concave portion 46 in the fitting protrusion 43 is a reference for positioning each part of the fitting protrusion 43. Used as. That is, the accuracy of each part of the fitting protrusion 43 and the first connector terminal 61 in the fitting protrusion 43, for example, the shape and size of the outer and inner surfaces of the recessed part 46, the position and protrusion of each connecting part 64 The accuracy of the amount or the like is determined based on the distance from the positioning protrusion 44.

  As described above, in the state where the first connector 40 is attached to the housing 10, the positioning protrusions 44 and the positioning protrusions 24 are aligned with each other to form a single line. The accuracy of each part of the fitting protrusion 43 and the first connector terminal 61 in the fitting protrusion 43 is the same as that determined based on the distance from the one strip. That is, the precision of each part of the cylindrical part 21, the fitting protrusion 43, and the 1st connector terminal 61 in this fitting protrusion 43 is the case where the 1st connector 40 and the housing | casing 10 are formed integrally. Like, it will be expensive.

  Thus, in a state where the first connector 40 is attached to the housing 10, the portion in front of the step portion 26 in the opening 23 of the cylindrical portion 21 and the concave portion 46 of the fitting projection 43 are integrated. The concave portion is formed, and the convex portion 112 of the second connector 101 is inserted into the concave portion from the outside of the housing 10. The positioning groove 114 and the inversion prevention groove 115 formed on the outer surface of the convex portion 112, that is, the surface facing the inner surface of the cylindrical portion 21 and the concave portion 46, form a single line. The strip 24 and the positioning projection 44 are engaged with the inversion prevention projection 25 and the inversion prevention projection 45, respectively. Thereby, the positioning of the second connector 101 with respect to the housing 10 in the lateral direction is performed.

  Further, when the engagement hole 121 a of the engagement lever 121 is engaged with the engagement protrusion 22, positioning with respect to the method for inserting and removing the second connector 101 from the housing 10 is performed. As a result, the seal member 125 attached so as to surround the outer periphery of the convex portion 112 is in close contact with the vicinity of the distal end portion of the opening 23 of the cylindrical portion 21, and the second connector 101 is fitted into the cylindrical portion 21 in a watertight manner. The second connector terminal is connected to the connection portion 64 of the first connector terminal 61.

  In addition, a connector holding portion 15 that protrudes inward from the peripheral edge of the opening 23 is integrally formed on the side wall 14 of the housing 10. In this case, the connector holding portion 15 is formed so as to protrude from both sides of the opening 23. Further, as shown in FIG. 7, holding grooves 15 a extending in the vertical direction are formed on opposing surfaces of the left and right connector holding portions 15, that is, on the opening 23 side.

  The holding groove portion 15a is fitted with a positioning member 31 for positioning the first connector terminal 61 of the first connector 40 with respect to the lead-out direction. When the first connector 40 is attached to the housing 10 and the flange 42 comes into contact with the periphery of the opening 23 on the inner surface of the side wall 14, the positioning member 31 is moved from above and is fitted into the holding groove 15a. Therefore, the flange 42 is sandwiched between the peripheral edge of the opening 23 on the inner surface of the side wall 14 and the positioning member 31 and cannot move in the direction in which the first connector terminal 61 is led out. That is, the positioning member 31 cooperates with the inner surface of the side wall 14 to sandwich the flange 42, whereby the first connector 40 is positioned in the connector fitting direction.

  Next, an assembly method for assembling the electronic junction box 1 by attaching the first connector 40 to the housing 10 will be described.

  FIG. 9 is a first diagram showing a process of attaching the first connector to the housing in the embodiment of the present invention, and FIG. 10 is a process of attaching the first connector to the housing in the embodiment of the present invention. FIG. 2 is a third view showing a process of attaching the first connector in the embodiment of the present invention to the housing, and FIG. 12 is a view of attaching the first connector in the embodiment of the present invention to the housing. FIG. 13 is a fourth diagram illustrating the process, and FIG. 13 is a fifth diagram illustrating the process of attaching the first connector to the housing in the embodiment of the present invention.

  First, a gauge member 201 as a jig as shown in FIG. 9 is prepared. The gauge member 201 is integrally formed of an insulating material such as synthetic resin or a metal material, has an outer shape similar to the convex portion 112 of the second connector 101, and is in the opening 23 of the cylindrical portion 21. Inserted. A first gauge groove 214 and a second gauge groove 215 extending in the insertion / extraction direction are formed on the surface of the gauge member 201 facing the inner surface of the cylindrical portion 21. The first gauge groove 214 and the second gauge groove 215 are formed to have the same arrangement and size as the positioning groove 114 and the inversion prevention groove 115 of the second connector 101, and are formed on the upper and lower inner surfaces of the opening 23. The positioning protrusion 24 and the reverse prevention protrusion 25 are engaged.

  A plurality of gauge ports 213 into which the connection portions 64 of the first connector terminals 61 are inserted are formed on the fitting end surface of the gauge member 201. The gauge port 213 is formed to have the same arrangement and size as the insertion port 113 of the second connector 101.

  Then, the gauge member 201 is held in such a posture that the fitting end face thereof faces the opening 23 of the cylindrical portion 21 of the housing 10, and is inserted into the opening 23 from the outside of the housing 10, and is shown in FIG. As shown, when the fitting end surface has entered a predetermined position in the opening 23, the insertion of the gauge member 201 is stopped. Accordingly, the first gauge groove 214 and the second gauge groove 215 are engaged with the positioning protrusion 24 and the inversion prevention protrusion 25 formed on the inner surface of the opening 23.

  Next, as shown in FIG. 11, the first connector 40 and the electronic device are lowered from above to approach the main body 11 of the housing 10, and enter the main body 11 through the opening of the main body 11. . In this case, the first connector 40 and the electronic device are caused to enter the main body 11 so that the first connector 40 faces the side wall 14 in which the opening 23 is formed.

  The first connector terminal 61 included in the first connector 40 is connected to the electronic device in advance, that is, the lower end portion 62 of the leg portion 68 of the first connector terminal 61 is previously a substrate of the electronic device. It is inserted into the through hole 91 and soldered. Thereby, the 1st connector 40 and an electronic device can be moved integrally, and can be attached to the housing | casing 10. FIG.

  Subsequently, when the fitting protrusion 43 is lowered to a position facing the opening 23, the lowering of the first connector 40 and the electronic device is stopped. Then, the first connector 40 and the electronic device are advanced, and the fitting protrusion 43 is inserted into the opening 23 as shown in FIG. At this time, the positioning protrusion 44 and the reverse prevention protrusion 45 formed on the inner surface of the concave portion 46 in the fitting protrusion 43 are engaged with the first gauge groove 214 and the second gauge groove 215 of the gauge member 201. . As described above, the positioning protrusion 44 and the reverse prevention protrusion 45 are provided with the first gauge groove 214 and the second gauge engaged with the positioning protrusion 24 and the reverse prevention protrusion 25 formed on the inner surface of the opening 23. By engaging with the groove 215, the positioning protrusion 24 and the inversion prevention protrusion 25 are aligned. In other words, the positioning protrusion 44 and the reverse prevention protrusion 45 and the positioning protrusion 24 and the reverse prevention protrusion 25 are positioned in alignment.

  And if the front-end | tip of the fitting protrusion 43 arrives at the position corresponding to the step part 26 of the opening 23, the advance of the 1st connector 40 and an electronic device will be stopped. Thereby, the positioning protrusion 44 and the reverse prevention protrusion 45 are aligned with the positioning protrusion 24 and the reverse prevention protrusion 25, and each forms a protrusion as one guide rib, that is, one line.

  Subsequently, the positioning member 31 is lowered from above and fitted into the holding groove portion 15 a of the connector holding portion 15. As shown in FIG. 12, the positioning member 31 has a substantially U-shaped shape, a horizontal beam portion 31 b extending in the horizontal direction, and a fitting extending downward from both ends of the horizontal beam portion 31 b. The joint part 31a and the eaves part 31c which protrudes back from the upper end of the said horizontal crosspiece part 31b are provided. In the fitting portions 31a on both sides, the portion near the outer end enters the holding groove portion 15a, and the side wall 14 side in the portion near the inner end abuts the surface opposite to the side wall 14 in the flange 42, that is, the rear surface. In addition, since the bulging part 42a is formed in the rear surface of the flange 42, the fitting part 31a is pressed back by this bulging part 42a. Thereby, since the force which clamps the flange 42 in cooperation with the inner surface of the side wall 14 becomes strong, the 1st connector 40 can be hold | maintained reliably. If necessary, the electronic device can be fixed to the main body 11 by fixing means such as screws or bolts.

  As described above, the first connector 40 is attached to the housing 10 as shown in FIG. Then, the gauge member 201 is removed, and a lid (not shown) is attached to the upper end of the housing 10 so as to close the opening and seal the watertight. Thereby, the assembly of the electronic junction box 1 is completed.

  In the present embodiment, the assembly method for inserting the fitting protrusion 43 of the first connector 40 into the opening 23 after inserting the gauge member 201 into the opening 23 of the cylindrical part 21 has been described. The gauge member 201 can be inserted into the opening 23 after the fitting protrusion 43 of the first connector 40 is inserted into the opening 23 of the cylindrical portion 21. In this case, by inserting the gauge member 201 into the opening 23, the positioning protrusion 24 and the reverse prevention protrusion 25, the positioning protrusion 44, and the reverse prevention protrusion 45 are aligned.

  As described above, in the present embodiment, the first connector 40 has a receptacle shape, includes the concave portion 46 disposed in the tubular portion 21, and includes the convex portion 112. Can be fitted to each other in the cylindrical portion 21, and the positioning ridge 44 and the inversion prevention ridge 45 formed on the inner surface of the concave portion 46 and the positioning ridge 24 and the inversion prevention formed on the inner surface of the opening 23. The protrusion 25 is a guide rib for positioning the first connector terminal 61 and the second connector terminal that are connected to each other to form a single line. As a result, the electronic junction box 1 is easy to manufacture and assemble each member and is low in cost, and can position the first connector terminal 61 and the second connector terminal with high accuracy. 101 can be easily connected.

  Further, the positioning ridge 44 and the inversion prevention ridge 45 formed on the inner surface of the concave portion 46 are the guide portions formed in the portion near the positioning ridge 24 and the inversion prevention ridge 25 formed on the inner surface of the opening 23. 44a and 45a. As a result, even if the positioning protrusion 44 and the inversion prevention protrusion 45 and the corresponding positioning protrusion 24 and the inversion prevention protrusion 25 are not completely aligned with each other, the guide portions 44 a and 45 a cause the convex portion 112. The positioning groove 114 and the inversion prevention groove 115 can be smoothly guided and guided.

  Furthermore, in the method for assembling the electronic junction box 1, the gauge member 201 is inserted into the opening 23. Therefore, the positioning of the alignment protrusion 44 and the reversal prevention protrusion 45 and the alignment protrusion 24 and the reversal prevention protrusion 25 in alignment can be easily and reliably performed with high accuracy.

  In addition, this invention is not limited to the said embodiment, It can change variously based on the meaning of this invention, and does not exclude them from the scope of the present invention.

It is a 1st perspective view of the electronic junction box in an embodiment of the invention. It is a 2nd perspective view of the electronic junction box in an embodiment of the invention. It is a perspective view of the 1st connector in an embodiment of the invention. It is a perspective view of the cylindrical part before attaching the 1st connector in embodiment of this invention. It is a perspective view of the cylindrical part which attached the 1st connector in embodiment of this invention. It is a sectional side view of the cylindrical part which attached the 1st connector in embodiment of this invention, Comprising: It is the YY arrow sectional drawing in FIG. It is a sectional side view of the cylindrical part which attached the 1st connector in embodiment of this invention, Comprising: It is ZZ arrow sectional drawing in FIG. It is a perspective view which shows the state before fitting of the electronic junction box and 2nd connector in embodiment of this invention. It is a 1st figure which shows the process of attaching the 1st connector in embodiment of this invention to a housing | casing. It is a 2nd figure which shows the process of attaching the 1st connector in embodiment of this invention to a housing | casing. It is a 3rd figure which shows the process of attaching the 1st connector in embodiment of this invention to a housing | casing. It is a 4th figure which shows the process of attaching the 1st connector in embodiment of this invention to a housing | casing. It is a 5th figure which shows the process of attaching the 1st connector in embodiment of this invention to a housing | casing. It is a figure which shows the structure of the electronic junction box of the conventional two piece structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electronic junction box 10,801 Housing | casing 11 Main body 12 Bottom plate 14 Side wall 15 Connector holding | maintenance part 15a Holding groove part 21 Cylindrical part 22 Engagement protrusion 23 Opening 24, 44 Positioning protrusion 25, 45 Inversion prevention protrusion 26 Step part 31 Positioning Member 31a Fitting portion 31b Horizontal rail portion 31c Gutter portion 40 First connector 41 Terminal support member 41a Alignment plate support portion 42 Flange 42a Swelling portion 43 Fitting protrusions 44a and 45a Guide portion 46 Concave portion 47 Alignment plate 61 First 1 connector terminal 62 lower end portion 64 connection portion 66 main body portion 68 leg portion 91 substrate 101 second connector 111, 803 housing 112 convex portion 113 insertion port 114 positioning groove 115 reverse rotation prevention groove 121 engagement lever 121a engagement hole 125 , 811 Seal member 191 Conductive cable 201 Gauge member 213 Gauge port 214 First gauge groove 21 The second gauge groove 802 connector 804 pin 805 opening 806 sealing portion 810 mating connector

Claims (8)

(A) an electronic junction box (1) that houses one or more electronic devices that can be connected to an external circuit;
(B) a first connector (40) for electrically connecting the electronic device and an external circuit;
(C) a cylindrical portion (21) having an opening (23) leading to the outside,
(D) The first connector (40) has a receptacle shape and includes a concave portion (46) as a fitting portion disposed in the cylindrical portion (21). The second connector (101) having a convex portion (112) and the tubular portion (21) can be fitted to each other,
(E) The ridges (44, 45) formed on the inner surface of the concave portion (46) and the ridges (24, 25) formed on the inner surface of the opening (23) are aligned with each other. An electronic junction box (1) characterized in that it forms guide ribs for positioning the pins (61) of the first connector (40) and the pins of the second connector (101) that are formed and connected to each other. The ridges (44, 45) formed on the inner surface of the concave portion (46) are guide portions (44a) formed on a portion near the ridge (24, 25) formed on the inner surface of the opening (23). 45a). Electronic junction box (1) according to claim 1, comprising: The electronic junction box (1) according to claim 2, wherein the guide portions (44a, 45a) are formed by chamfering. The ridges (44, 45) formed on the inner surface of the concave portion (46) and the ridges (24, 25) formed on the inner surface of the opening (23) are each plural. The electronic junction box (1) described. 5. The protrusions (44, 45) formed on the inner surface of the concave part (46) and the protrusions (24, 25) formed on the inner surface of the opening (23) are respectively located at opposing portions. The electronic junction box (1) described in 1. The ridges (44, 45) formed on the inner surface of the concave portion (46) and the ridges (24, 25) formed on the inner surface of the opening (23) are caused by an error of the second connector (101). Electronic junction box (1) according to claim 5, which prevents insertion. (A) An assembling method of an electronic junction box (1) that houses one or more electronic devices that can be connected to an external circuit,
(B) A cylindrical part (21) of the electronic junction box (1) having a concave part (46) as a fitting part of a first connector (40) for electrically connecting the electronic device and an external circuit. In the opening (23) leading to the outside of the electronic junction box (1) from the inside,
(C) The ridges (44, 45) formed on the inner surface of the concave portion (46) and the ridges (24, 25) formed on the inner surface of the opening (23) are aligned to form one strip. And
(D) The alignment state of the ridges (24, 25, 44, 45) by inserting a jig (201) into the opening (23) and the concave portion (46) from the outside of the electronic junction box (1). A method for assembling the electronic junction box (1), characterized in that: (A) A method of assembling an electronic junction box (1) that houses one or more electronic devices that can be connected to an external circuit.
(B) Insert a jig (201) from the outside of the electronic connection box (1) into the opening (23) leading to the outside of the cylindrical part (21) of the electronic connection box (1),
(C) A concave portion (46) as a fitting portion of a first connector (40) for electrically connecting the electronic device and an external circuit is formed in the electronic connection box (1) in the opening (23). Arranged from the inside of
(D) The ridges (44, 45) formed on the inner surface of the concave part (46) and the ridges (24, 25) formed on the inner surface of the opening (23) are aligned and positioned. A method of assembling the electronic junction box (1), characterized in that a strip is formed.

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