JP5618154B2 - connector - Google Patents

Description

  The present invention relates to a connector.

  Conventionally, the thing of patent document 1 is known as a pair of connector which can be mutually fitted. In this connector, a plurality of terminals are arranged side by side in one connector. In one connector, a bolt insertion hole through which a bolt is inserted is formed at a position separated from the terminal in a direction intersecting the arrangement direction of the plurality of terminals. On the other hand, the other connector has a mating terminal accommodated at a position corresponding to a plurality of terminals, and a screw hole into which a bolt is screwed at a position corresponding to the bolt insertion hole of one connector. Yes.

  In the connector according to the prior art, one connector and another connector are fitted by inserting a bolt into the bolt insertion hole and screwing it into the screw hole. Thereby, a some terminal and a some other party terminal are electrically connected.

JP 2006-92776 A

  In the above configuration, when the bolt is screwed into the screw hole, the force in the direction in which the one connector and the other connector are pressed against each other acts on both the one connector and the other connector from the shaft portion of the bolt. . This force acts strongly in the region in the vicinity of the bolt, and attenuates as the distance from the bolt increases.

  According to said structure, as FIG. 6 of patent document 1 shows, the bolt penetration hole and the screw hole are formed in the position away from the terminal about the direction which cross | intersects the arrangement direction of a some terminal. For this reason, the force for pressing one connector and the other connector against each other is weaker than the force acting on the portion in the vicinity of the bolt with respect to the terminal and the counterpart terminal arranged at a position away from the bolt. turn into. For this reason, a force larger than the force necessary for fitting the terminal and the mating terminal is required when tightening the bolt. As a result, there has been a problem that the efficiency of the work of fitting the connector is reduced.

  This invention is completed based on the above situations, Comprising: It aims at providing the connector with which the force which tightens a volt | bolt was reduced.

The present invention is a pair of connectors that can be fitted to each other, and one connector includes three waterproof cylindrical portions that project toward the other connector and that have terminals accommodated therein. Bolt insertion holes through which bolts are inserted are formed at positions between the three waterproof cylinder portions, and the other connectors are three fitting cylinders that can be individually fitted with the three waterproof cylinder portions. A seal ring that is in close contact with the other is attached to one of the waterproof cylinder part and the fitting cylinder part, and a mating terminal connected to the terminal is accommodated in the fitting cylinder part. And the other connector has the same number of three mating terminals as the terminals, and the other connector has a screw hole into which the bolt is screwed at a position corresponding to the bolt insertion hole. Formed and the bolt inserted into the bolt insertion hole. Formed but the is the by being screwed into the screw holes one connector and the other connector is fitted, the one connector, the position of the three said waterproof tubular portion corresponding to each vertex of the triangle The bolt insertion hole is formed at the position of the center of gravity of the triangle .

  According to the present invention, when a bolt is inserted into the bolt insertion hole and screwed into the screw hole, a force pressing against each other acts on one connector and the other connector via the bolt. Since the bolt insertion hole is formed between the plurality of waterproof cylinder parts, the force applied to one connector and the other connector via the bolt acts on each waterproof cylinder part without being greatly attenuated. . Thereby, when fitting one connector and another connector, it can suppress that the force which tightens a volt | bolt becomes large, Therefore The efficiency of a fitting operation | work can be improved.

  Since the waterproof cylinder part and the fitting cylinder part are sealed by the seal ring, a relatively large fitting force is required. According to the present invention, by screwing the bolt into the screw hole, the force acting on one connector and the other connector can be acted on the waterproof cylinder part and the fitting cylinder part without greatly attenuating. The force for tightening can be reduced.

In addition, since the terminals are individually accommodated in the waterproof cylinder portion, the above force acts on each terminal. Thereby, even when the contact pressure between the terminal and the counterpart terminal is relatively large, the terminal and the counterpart terminal can be connected by tightening the bolt with a relatively small force.
Moreover, the force which acts on one connector and another connector when tightening a bolt can be made to act on each waterproofing cylinder part, without greatly attenuating. Thereby, it can suppress further that the clamping force of a volt | bolt becomes large.
Moreover, the force which acts on one connector and another connector when tightening a volt | bolt can be made to act equally on each waterproofing cylinder part. Thereby, the connection reliability of one connector and another connector can be improved.

As embodiments of the present invention, the following embodiments are preferable.
The waterproof cylinder part is preferably formed by molding the terminal with a synthetic resin.

  According to said aspect, the waterproofness of a waterproof cylinder part can be improved.

  The other connector includes a metal case that surrounds the mating terminal, and the one connector is a metal shield shell that surrounds the terminal with the case in a state of being fitted to the other connector. One of the case and the shield shell is formed with an abutting portion extending toward the other, and the tip of the abutting portion is properly connected to the one connector and the other connector. In the fitted state, it is preferable to contact the other of the case and the shield shell.

  In the above aspect, the shield shell and the case can be electrically connected to each other through the abutting portion by tightening the bolts and properly fitting one connector with another connector. As a result, both the fitting work of one connector and another connector and the electrical connection work between the shield shell and the case can be executed by tightening the bolts. Can be improved.

  The fitting tube portion is preferably formed on the case.

  According to the above aspect, waterproofing between one connector and another connector and electromagnetic shielding can be performed simultaneously.

  It is preferable that the contact portion is formed in a cylindrical shape extending from the shield shell toward the case and penetrating the bolt insertion hole.

  According to the above aspect, since the contact portion is formed in a cylindrical shape through which the bolt insertion hole is penetrated, one connector generated by screwing the bolt into the screw hole and the other connector are connected to each other. The pressing force is efficiently transmitted to the contact portion located in the vicinity of the bolt. As a result, the electrical connection between the shield shell and the case can be ensured.

  ADVANTAGE OF THE INVENTION According to this invention, when fastening a connector with a volt | bolt, the force which tightens a volt | bolt can be reduced.

Sectional drawing which shows the connector which concerns on one Embodiment of this invention Sectional view showing male connector and female connector Exploded perspective view showing male connector Perspective view showing male connector Front view showing male connector Rear view showing male connector Side view showing a state in which a male terminal is connected to an end of an electric wire Sectional drawing which shows the state in which the mold part was formed

<Embodiment>
An embodiment of the present invention will be described with reference to FIGS. The connector 10 according to the present embodiment includes a male connector 11 (corresponding to one connector) and a female connector 12 (corresponding to another connector) that can be fitted to each other. In the following description, the front in the fitting direction of the connectors 11 and 12 is the front and the rear is the rear. For this reason, in the male connector 11 and the female connector 12, the front-back direction is opposite. Further, the upper side in FIG. 1 is the upper side, and the lower side is the lower side.

(Female connector 12)
The female connector 12 includes a terminal block 13 made of an insulating synthetic resin, a metal bus bar 15 fixed to the terminal block 13 with a bolt 14, and a metal block connected to the terminal block 13 via a conductive member 16. Female terminals 17 (corresponding to counterpart terminals) and a synthetic resin housing 18 in which the female terminals 17 are accommodated.

  The bus bar 15 is formed by pressing a metal plate into a predetermined shape. The bus bar 15 can be made of any metal such as copper, copper alloy, aluminum, aluminum alloy, stainless steel or the like as required. On the surface of the bus bar 15, a plating layer made of an arbitrary metal such as tin or nickel may be formed as necessary.

  A housing 18 is attached to the terminal block 13 by attachment means (not shown). As the attachment means, any configuration may be adopted as necessary, such as screwing, a lock structure in which the lock protrusion and the lock receiving portion are elastically engaged. The housing 18 is formed with a cavity 19 in which the conductive member 16 and the female terminal 17 are accommodated.

  The conductive member 16 is connected to the bus bar 15 by an arbitrary method such as soldering, brazing, laser welding, ultrasonic welding, resistance welding, or the like. The conductive member 16 is bent at a substantially right angle when viewed from the side to form a shape. The conductive member 16 and the female terminal 17 are connected by an arbitrary method as necessary, such as soldering, brazing, welding, caulking, or the like. The conductive member 16 is made of any metal such as copper, copper alloy, aluminum, aluminum alloy or the like as necessary. In addition, the conductive member 16 may have a plate shape, or may be configured by a flexible braided wire made of a fine metal wire.

  The female terminal 17 is formed by pressing a metal plate material into a predetermined shape. As a metal which forms the female terminal 17, arbitrary metals, such as copper and a copper alloy, can be used as needed. A plating layer made of an arbitrary metal such as tin or nickel may be formed on the surface of the metal plate material as necessary. The rear end portion (the right end portion in FIG. 1) of the female terminal 17 is connected to the conductive member 16 by any method as necessary, such as soldering, brazing, laser welding, ultrasonic welding, resistance welding, caulking, or the like. Yes. A connecting tube portion 20 into which a male terminal 25 (corresponding to a terminal) is inserted is formed at the front end portion (left end portion in FIG. 1) of the female terminal 17. The female connector 12 is provided with the same number of female terminals 17 as the male terminals 25.

  The terminal block 13, the bus bar 15, the housing 18, the conductive member 16, and the male terminal 25 are surrounded by a metal case 21. The case 21 can be formed of any metal such as aluminum, aluminum alloy, copper, copper alloy, iron, stainless steel, etc. as necessary. In the present embodiment, the case 21 is made of aluminum.

  The case 21 is formed with a fitting cylinder portion 22 into which a waterproof cylinder portion 28 of the male connector 11 described later is fitted so as to protrude forward (leftward in FIG. 2). The fitting cylinder part 22 has a substantially cylindrical shape. A housing 18 is disposed inside the fitting tube portion 22, and a connecting tube portion 20 of the female terminal 17 is accommodated in a cavity 19 of the housing 18.

(Male connector 11)
The male connector 11 includes a male terminal 25 connected to the core wire 24 exposed from the end of the electric wire 23. In the present embodiment, a male terminal 25 is connected to each of the three electric wires 23. The male terminal 25 has a shape bent at a substantially right angle when viewed from the side. The rear end portion (left end portion in FIG. 2) of the male terminal 25 is connected to the core wire 24 by an arbitrary method as required, such as soldering, brazing, laser welding, ultrasonic welding, resistance welding, caulking, or the like. . The front end portion (the right end portion in FIG. 2) of the male terminal 25 is a pin portion 26 that has a substantially cylindrical shape and protrudes forward (to the right in FIG. 2). In the present embodiment, the pin portion 26 has a substantially cylindrical shape. The outer diameter dimension of the pin portion 26 is set to be the same as or slightly smaller than the inner diameter dimension of the connecting cylinder portion 20 described above. Thereby, the male terminal 25 and the female terminal 17 are brought into close contact with the outer surface of the pin portion 26 while the pin portion 26 is accommodated in the connection tube portion 20. It is designed to be electrically connected.

  The electric wire 23, the core wire 24, and the male terminal 25 include a molded portion 27 that is molded by a synthetic resin. The mold part 27 is formed with a waterproof cylinder part 28 extending forward (rightward in FIG. 2). The waterproof cylinder portion 28 has a substantially cylindrical shape. A pin portion 26 of the male terminal 25 is accommodated inside the waterproof cylinder portion 28.

  A rubber seal ring 29 is fitted on the outer surface of the waterproof cylinder portion 28. When the waterproof cylinder portion 28 is fitted into the connection cylinder portion 20 described above, the outer surface of the seal ring 29 is in close contact with the inner wall surface of the connection cylinder portion 20. As a result, the space between the waterproof cylinder portion 28 and the connection cylinder portion 20 is sealed.

  The electric wire 23 and the mold part 27 are inserted through a spacer 30 made of synthetic resin. The spacer 30 has a flat shape, and the same number of through holes 31 as the electric wires 23 are formed side by side at intervals. By inserting the electric wire 23 and the mold portion 27 into the through hole 31, the three electric wires 23 are arranged at regular positions in the male connector 11. A step projecting inward is formed at a position near the lower end portion of the through hole 31, and the mold portion 27 abuts on the step from above, thereby preventing the electric wire 23 and the mold portion 27 from coming out downward. It has been.

(Shield shell 32)
The electric wire 23, the molded part 27, the male terminal 25, and the spacer 30 are surrounded by a metal shield shell 32. The shield shell 32 is made of an arbitrary metal such as aluminum, aluminum alloy, copper, copper alloy or the like as required. In a state in which the male connector 11 and the female connector 12 are fitted, the male terminal 25 is surrounded by the case 21 of the female connector 12 and the shield shell 32 of the male connector 11.

  The shield shell 32 includes a rear shell 33 located on the rear side (left side in FIG. 2) and a front shell 34 located on the front side (right side in FIG. 2). As shown in FIG. 3, the rear shell 33 and the front shell 34 are fixed by screws 35.

  The front shell 34 includes a front plate 36 and a ring portion 37 having a ring shape extending below the front plate 36. The ring portion 37 is opened in the vertical direction. The front plate 36 is substantially U-shaped when viewed from the front-rear direction, with a substantially central portion notched downward in the direction in which the electric wires 23 are arranged. Three waterproof cylinders 28 are respectively arranged from above on the upper edge of the front plate 36 and the part cut out downward. By the front plate 36, the front side of the male connector 11 is electromagnetically shielded.

  The ring portion 37 has an oval cross-sectional shape. A spacer 30 is fitted in the ring portion 37.

  The rear shell 33 has a shallow dish shape with an opening at the front (right side in FIG. 2) and a shape with an opening at the bottom. As shown in FIG. 3, a screw hole 38 for screwing the front shell 34 with a screw 35 is formed in the wall portion of the rear shell 33 so as to open forward. The rear shell 33 electromagnetically shields the rear side of the male connector 11.

  Inside the rear shell 33, a plurality of ribs 39 are formed to rise forward, and hold the waterproof cylinder portion 28 at a predetermined position. Specifically, each waterproof cylinder portion 28 is sandwiched between the lower surface of the rib 39 and the upper edge portion and the lower notched portion of the front shell 34 described above.

  As shown in FIG. 2, a bolt insertion hole 40 through which the shaft portion 44 of the bolt 52 is inserted is formed in the rear wall of the rear shell 33 so as to penetrate in the front-rear direction (left-right direction in FIG. 2). A contact portion 41 having a cylindrical shape is formed from the rear wall of the rear shell 33 toward the front, and the above-described bolt insertion hole 40 is formed in the contact portion 41.

  The shaft portion 44 of the bolt 52 is screwed into a screw hole 43 formed in a cap nut 42 embedded in the housing 18 of the male connector 11. The cap nut 42 may be configured to be molded in the housing 18 or may be embedded by press-fitting or the like.

  A rubber bolt seal ring 45 is fitted on the shaft portion 44 of the bolt 52 at a position near the approximate center in the length direction. The outer surface of the bolt seal ring 45 is brought into close contact with the inner wall surface of the case side bolt insertion hole 46 formed in the case 21 so that the bolt 52 and the case 21 are sealed.

  A flange 47 is formed on the head of the bolt 52 so as to protrude outward in the radial direction of the bolt 52. On the rear surface of the rear wall of the rear shell 33, a recess 48 for accommodating the flange 47 is formed. A receiving plate portion 49 is attached to the rear wall of the rear shell 33 from the rear of the recess 48 with screws 50. A jig insertion hole 51 into which a jig for fastening the head of the bolt 52 can be inserted is formed at the center position of the receiving plate portion 49. The inner diameter dimension of the jig insertion hole 51 is set smaller than the outer diameter dimension of the flange 47. Accordingly, when the bolt 52 is loosened and the bolt 52 is moved rearward, the flange 47 comes into contact with the receiving plate portion 49 from the front and presses the rear shell 33 rearward.

  As shown in FIG. 5, the front surface of the male connector 11 is arranged so that the central axis of the three waterproof cylinders 28 is located at the apex of the triangle. Two waterproof cylinders 28 are located on the upper side and one on the lower side.

  As shown in FIGS. 4 and 5, the position surrounded by the three waterproof cylinders 28 arranged at the apex position of the triangle has a contact part 41 and a bolt inserted in the contact part 41. A bolt 52 inserted through the hole 40 is disposed. Specifically, the bolt insertion hole 40 formed in the shaft portion 44 is arranged at the center of gravity of a triangle formed by the central axis of each waterproof cylinder portion 28. Note that the center of gravity of the triangle is the intersection of three line segments connecting the vertex and the midpoint of the opposite side.

(Assembly process)
Then, an example of the assembly | attachment process of the connector 10 which concerns on this embodiment is demonstrated. The assembly process of the connector 10 is not limited to the following description.

  First, the rear end portion of the female terminal 17 and the conductive member 16 are connected. Next, the conductive member 16 and the bus bar 15 are connected. The order in which the female terminal 17 and the bus bar 15 are connected to the conductive member 16 may be opposite to the above, and the female terminal 17 and the bus bar 15 may be connected to the conductive member 16 in the same process.

  Next, the bus bar 15 is fixed to the terminal block 13 with bolts 14. Subsequently, the housing 18 is assembled to the terminal block 13. At this time, the female terminal 17 is accommodated in the cavity 19 of the housing 18. Subsequently, the case 21 is assembled so as to cover the housing 18. Thereby, the female connector 12 is completed.

  Next, the insulating coating surrounding the outer periphery of the core wire 24 is peeled off at the end of the electric wire 23. Thereby, the core wire 24 is exposed. The rear end portion of the male terminal 25 is connected to the exposed core wire 24 (see FIG. 7).

  Subsequently, the mold part 27 is formed by molding with synthetic resin. The pin portion 26 of the male terminal 25 is positioned inside the waterproof cylinder portion 28 of the mold portion 27 (see FIG. 8). Next, the seal ring 29 is fitted on the outer periphery of the waterproof terminal.

  Subsequently, the electric wire 23 and the mold part 27 are inserted into the through hole 31 of the spacer 30 from above. Next, the spacer 30 is inserted into the ring portion 37 of the front shell 34 from above. Thereafter, the front shell 34 is screwed to the rear shell 33 with screws 35. Thereby, the waterproof cylinder part 28 is held at a predetermined position of the male connector 11. Specifically, the three waterproof cylinders 28 are arranged so that the central axes thereof are located at the apexes of the triangle.

  Next, the bolt 52 is inserted into the recess 48 of the rear shell 33 from the rear. Further, the shaft portion 44 of the bolt 52 is inserted into the bolt insertion hole 40. Next, after the head portion of the bolt 52 is accommodated in the recess 48, the receiving plate portion 49 is screwed to the rear shell 33 with screws 50. Thereby, the male connector 11 is completed.

  Next, a fitting operation between the male connector 11 and the female connector 12 will be described. As shown in FIG. 2, the front surface of the male connector 11 and the front surface of the female connector 12 are arranged to face each other. In this arrangement, the waterproof cylinder portion 28 of the male connector 11 protrudes toward the female connector 12, and the fitting cylinder portion 20 of the female connector 12 protrudes toward the male connector 11. Next, the male connector 11 is brought closer to the female connector 12 from the direction indicated by the arrow A in FIG. 2, and the shaft portion 44 of the bolt 52 protruding forward of the male connector 11 is inserted into the bolt insertion hole 40 of the female connector 12. insert. Further, the male connector 11 is brought close to the female connector 12 so that the tip of the shaft portion 44 of the bolt 52 is engaged with the screw hole 43 of the cap nut 42.

  Next, a jig (not shown) is inserted into the jig insertion hole 51 of the receiving plate portion 49, and the head of the bolt 52 is inserted so that the shaft portion 44 of the bolt 52 is screwed into the screw hole 43 of the cap nut 42. Rotate. Then, when the bolt 52 is screwed into the screw hole 43, a force that the male connector 11 and the female connector 12 press against each other acts. Thereby, the male connector 11 and the female connector 12 approach each other.

  When the bolt 52 is further screwed in, the seal ring 29 that is externally fitted to the waterproof cylinder portion 28 comes into close contact with the inner wall surface of the fitting cylinder portion 22. Thereby, the waterproof cylinder part 28 and the fitting cylinder part 22 are sealed.

  When the bolt 52 is further screwed in, the pin portion 26 of the male terminal 25 enters the inside of the connecting tube portion 20 of the female terminal 17. Thereby, the inner wall surface of the connection cylinder part 20 contacts the outer peripheral surface of the pin part 26. Thereby, the male terminal 25 and the female terminal 17 are electrically connected.

  When the bolt 52 is further screwed in, the tip of the contact portion 41 of the rear shell 33 comes into contact with the case 21. Thereby, the shield shell 32 and the case 21 are electrically connected. Thereby, fitting with the male connector 11 and the female connector 12 is completed.

  Next, the detachment operation between the male connector 11 and the female connector 12 will be described. A jig is inserted into the jig insertion hole 51 of the receiving plate portion 49, and the bolt 52 is loosened. Then, the flange 47 formed on the head of the bolt 52 contacts the receiving plate 49 from the front side in the fitting direction of the male connector 11. Then, since the receiving plate portion 49 is pressed backward, the rear shell 33 to which the receiving plate portion 49 is screwed is also pressed backward. As a result, when the bolt 52 is loosened, the male connector 11 is pressed backward.

  When the bolt 52 is further loosened, the male connector 11 is pushed rearward, so that the male connector 11 moves rearward and is detached from the female connector 12.

(Operation and effect of the embodiment)
Then, the effect | action and effect of this embodiment are demonstrated. According to the present embodiment, the male connector 11 is formed with the bolt insertion hole 40 through which the bolt 52 is inserted at a position surrounded by the plurality of waterproof cylinder portions 28, and the female connector 12 is inserted with the bolt insertion hole. A screw hole 43 into which the bolt 52 is screwed is formed at a position corresponding to the hole 40. As a result, when the bolt 52 is inserted into the bolt insertion hole 40 and screwed into the screw hole 43, a force that presses against the male connector 11 and the female connector 12 acts via the bolt 52. Since the bolt insertion hole 40 is formed between the plurality of waterproof cylinder portions 28, the force applied to the male connector 11 and the female connector 12 via the bolts 52 is greatly attenuated with respect to each waterproof cylinder portion 28. It works without. Thereby, when fitting the male connector 11 and the female connector 12, it can suppress that the force which tightens the volt | bolt 52 becomes large, Therefore The efficiency of a fitting operation | work can be improved.

  Since the waterproof cylinder part 28 and the fitting cylinder part 22 are sealed by the seal ring 29, a relatively large fitting force is required. According to the present embodiment, the force acting on the male connector 11 and the female connector 12 is acted on the waterproof cylinder portion 28 and the fitting cylinder portion 22 without being greatly attenuated by screwing the bolt 52 into the screw hole 43. Therefore, the force for tightening the bolt 52 can be reduced.

  Further, since the male terminals 25 are individually accommodated in the waterproof cylinder portion 28, the above force acts on each male terminal 25. Thereby, even when the contact pressure between the male terminal 25 and the female terminal 17 is relatively large, the male terminal 25 and the female terminal 17 can be connected by tightening the bolt 52 with a relatively small force. .

  In the present embodiment, the male terminal 25 and the female terminal 17 are individually sealed by the waterproof cylinder part 28 and the fitting cylinder part 22. This prevents the bolt 52 from penetrating through the area to be waterproofed. Thereby, the waterproofness of the connector 10 can be improved.

  Further, according to the present embodiment, the waterproof cylinder portion 28 is formed by molding the male terminal 25 with a synthetic resin. Thereby, the waterproofness of the waterproof cylinder part 28 can be improved.

  Further, according to the present embodiment, the female connector 12 includes a metal case 21 surrounding the female terminal 17, and the male connector 11 is connected to the female connector 12 with the male terminal 25 between the case 21 and the case 21. A surrounding metal shield shell 32 is provided. A contact portion 41 extending toward the case 21 is formed on the shield shell 32, and the tips of the contact portions 41 are connected to the male connector 11 and the female connector. In the state in which 12 is normally fitted, it comes into contact with the case 21. Thus, the shield shell 32 and the case 21 can be electrically connected via the contact portion 41 by tightening the bolt 52 and properly fitting the male connector 11 and the female connector 12 together. Thereby, both the fitting operation of the male connector 11 and the female connector 12 and the electrical connection operation of the shield shell 32 and the case 21 can be executed by tightening the bolts 52. The efficiency of connection work can be improved.

  Further, according to the present embodiment, the fitting cylinder portion 22 is formed in the case 21. Thereby, waterproofing between the male connector 11 and the female connector 12 and electromagnetic shielding can be performed simultaneously.

  Moreover, according to this embodiment, the contact part 41 is formed in the cylinder shape extended from the shield shell 32 toward the case 21, and the bolt penetration hole 40 was penetrated. Thereby, since the contact part 41 is formed in the cylinder shape by which the bolt insertion hole 40 was penetrated, the male connector 11 and the female connector 12 which generate | occur | produce by screwing the bolt 52 in the screw hole 43 are mutually connected. The pressing force is efficiently transmitted to the contact portion 41 located in the vicinity of the bolt 52. As a result, the electrical connection between the shield shell 32 and the case 21 can be ensured.

  Further, according to the present embodiment, the male connector 11 has the three waterproof cylindrical portions 28 formed at positions corresponding to the vertices of the triangle, and the bolt insertion holes 40 are formed in the inner region of the triangle. It is arranged. Thereby, the force which acts on the male connector 11 and the female connector 12 when tightening the bolt 52 can be made to act on each waterproofing cylinder part 28, without being attenuate | damped largely. Thereby, it can suppress further that the fastening force of the volt | bolt 52 becomes large.

  Further, according to the present embodiment, the bolt insertion hole 40 is formed at the position of the center of gravity of the triangle formed by the three waterproof cylinder portions 28. Thereby, the force which acts on the male connector 11 and the female connector 12 when tightening the bolt 52 can be made to act equally on each waterproofing cylinder part 28. Thereby, it can suppress that the male connector 11 inclines with respect to the female connector 12. FIG. As a result, the connection reliability between the male connector 11 and the female connector 12 can be improved.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) The shield shell 32 and the case 21 may be omitted.
(2) As a reference example, the waterproof cylinder part 28 and the fitting cylinder part 22 may be two, or four or more.
(3) As a reference example, the bolt insertion hole 40 may not be formed at the position of the center of gravity of the polygon formed by the waterproof cylindrical portion 28.
(4) In the present embodiment, the seal ring 29 is externally fitted to the waterproof cylinder part 28 and is in close contact with the inner surface of the fitting cylinder part 22. However, the present invention is not limited to this. It is good also as a structure fitted in the cylinder part 22, and closely_contact | adhering to the outer surface of the waterproof cylinder part 28. FIG.
(5) In this embodiment, the male connector 11 is one connector and the female connector 12 is another connector. However, the present invention is not limited to this, and the female connector 12 in which the female terminals 17 are accommodated is one connector. The male connector 11 in which the male terminal 25 is accommodated may be another connector.
(6) In the present embodiment, the male terminal 25 is configured to have the pin portion 26, but is not limited thereto, and the male terminal 25 may be configured to have a tab portion having a flat plate shape, and an arbitrary configuration as necessary. It can be.
(7) In this embodiment, the contact portion 41 extends from the rear shell 33 toward the case 21. However, the present invention is not limited to this, and the contact portion 41 may extend from the case 21 toward the rear shell 33. .
(8) In the present embodiment, the abutting portion 41 is formed with the bolt insertion hole 40 through which the bolt 52 is inserted. However, the bolt insertion hole 40 is formed in a portion different from the abutting portion 41. Also good.
(9) In the present embodiment, the screw hole 43 formed in the female connector 12 is formed in the cap nut 42 molded in the housing 18. However, the present invention is not limited to this, and the screw hole 43 is formed. The screw hole 43 may be provided in the female connector 12 by fixing the nut so as not to rotate to the housing 18.

10 ... Connector 11 ... Male connector (one connector)
12 ... Female connector (other connector)
17 ... Female terminal (mating terminal)
21 ... Case 22 ... Fitting cylinder part 25 ... Male terminal (terminal)
28 ... Waterproof cylinder 29 ... Seal ring 32 ... Shield shell 33 ... Rear shell 34 ... Front shell 38 ... Screw hole 40 ... Bolt insertion hole 41 ... Abutting part 52 ... Bolt

Claims (5)

A pair of connectors that can be fitted together,
One connector has three waterproof cylinders that protrude toward the other connector and accommodates terminals therein, and a bolt is inserted through the one connector at a position between the three waterproof cylinders. Bolt insertion holes are formed,
The other connector has three fitting tube portions that can be individually fitted to the three waterproof tube portions, and one of the waterproof tube portion and the fitting tube portion is fitted with a seal ring that is in close contact with the other. The mating cylinder portion accommodates a mating terminal connected to the terminal, and the other connector is provided with the same number of three mating terminals as the terminal, The other connector has a screw hole into which the bolt is screwed at a position corresponding to the bolt insertion hole,
The one connector and the other connector are fitted by screwing the bolt inserted into the bolt insertion hole into the screw hole ,
In the one connector, the three waterproof cylindrical portions are formed at positions corresponding to the respective apexes of the triangle, and the bolt insertion hole is formed at the position of the center of gravity of the triangle .   The connector according to claim 1, wherein the waterproof cylindrical portion is formed by molding the terminal with a synthetic resin. The other connector includes a metal case that surrounds the mating terminal, and the one connector is a metal shield shell that surrounds the terminal with the case in a state of being fitted to the other connector. With
A contact portion extending toward the other is formed on one of the case and the shield shell,
3. The connector according to claim 1, wherein a tip of the contact portion contacts the other of the case and the shield shell in a state where the one connector and the other connector are properly fitted.   The connector according to claim 3, wherein the fitting tube portion is formed in the case.   The connector according to claim 3 or 4, wherein the contact portion is formed in a cylindrical shape extending from the shield shell toward the case and penetrating the bolt insertion hole.

Images