JP2009070656A - Relay connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a relay connector capable of carrying out efficiently an electrical connection work between two devices. <P>SOLUTION: The relay connector 10 includes a housing 15 arranged in a case 4, first contactors 16 which protrude from the housing toward an inverter side terminal 12 with a spring performance and second contactors 17 which are electrically connected to the first contactors 16 and protrude from the housing 15 toward a motor side terminal 13 with a spring performance. While an inverter 2, a motor 1, and the housing 15 are arranged in a regular position, the first contactors 16 contact the inverter side terminal 12 with the spring force, and the second contactors 17 contact the motor side terminal 13 with the spring force. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a relay connector.

Electric vehicles and hybrid vehicles are equipped with devices such as motors and inverters. Conventionally, as shown in FIG. 8, a configuration is known in which a motor 1 and an inverter 2 are integrated, and the motor 1 and the inverter 2 are electrically connected by a relay connector 3 (see Patent Document 1). . Thereby, the wire harness which connects between the motor 1 and the inverter 2 can be omitted. The motor 1 is accommodated in the case 4 and the relay connector 3 is disposed in the case 4.
JP 2004-215355 A

  According to the relay connector 3 described above, the inverter 2 and the motor 1 are electrically connected as follows. That is, first, the worker attaches the inverter 2, the motor 1, and the relay connector 3 to predetermined regular positions. Thereafter, the operator connects the connection terminal 5A of the inverter 2 and the inverter-side connection terminal 6A of the relay connector 3 by the bolt 7A on the inverter 2 side, and further the connection terminal 5B of the motor 1 on the motor 1 side, The motor side connection terminal 6B of the relay connector 3 is connected by a bolt 7B. Thus, according to said structure, there exists a problem that the operation | work which electrically connects the inverter 2 and the motor 1 becomes complicated.

  The present invention has been completed based on the above-described circumstances, and an object thereof is to provide a relay connector capable of efficiently performing an electrical connection work between two devices.

  The present invention provides a first device side terminal provided in the first device and a second device side provided in the second device, which are disposed in a partition wall that partitions the first device and the second device. A relay connector for electrically connecting a terminal, a housing disposed in the partition, a first contactor projecting from the housing toward the first device side terminal with a spring property; A second contact that is electrically connected to the first contact and protrudes from the housing toward the second device side terminal with a spring property; and the first device and the second device In the state where the housing is disposed at the normal position, the first contactor contacts the first device side terminal by the spring force, and the second contactor contacts the second device side terminal by the spring force. It is characterized by contacting with.

  According to the present invention, the first device side terminal and the first contactor are brought into contact with each other, and the second device side terminal and the second device are contacted only by arranging the first device, the second device, and the relay connector at regular positions. The contact can be brought into contact. Thereby, the electrical connection of a 1st apparatus side terminal and a 2nd apparatus side terminal can be performed efficiently.

The following configuration is preferable as an embodiment of the present invention.
The dimension between the first device side terminal and the housing in a state in which the first device and the housing are disposed at regular positions is set to be equal to or smaller than the projecting dimension of the first contactor from the housing in a free state. And the dimension between the second device side terminal and the housing in a state in which the second device and the housing are disposed at regular positions is determined from the housing of the second contactor in a free state. It is set below the protruding dimension.

  According to said structure, if a 1st apparatus and a housing are arrange | positioned in a regular position, the 1st contactor provided with the spring property will be pressed by the 1st apparatus side terminal, and the opposite direction to a 1st apparatus side terminal Shrink to. Then, a spring force is generated in the first contact. By this spring force, the first contact is reliably brought into contact with the first device side terminal. Similarly, when the second device and the housing are disposed at the regular positions, the second contactor having springiness is pressed by the second device side terminal and contracts in the opposite direction to the second device side terminal. Then, a spring force is generated in the second contact. By this spring force, the second contact is reliably brought into contact with the second device side terminal.

  The housing may have a cavity, and an elastic member for imparting spring property to the first contact and the second contact may be accommodated in the cavity.

  The housing has a cavity, and a first elastic member for imparting spring property to the first contact and a second for imparting spring property to the second contact in the cavity. An elastic member may be accommodated.

  According to said structure, a spring property can be provided to a 1st contactor and a 2nd contactor.

  The housing has a cavity, and a metal shaft is accommodated in the cavity. One end of the shaft is electrically connected to the first contact, and the other end of the shaft is the first. It is electrically connected to the two contacts.

  According to said structure, since a 1st contactor and a 2nd contactor can be electrically connected by a shaft, a large electric current can be sent through a relay connector.

  The first device is an inverter, the second device is a motor, an O-ring is fitted on the outer periphery of the second contact, and the outer periphery of the O-ring and the housing are in contact with each other. The space between the second contact and the housing is sealed.

  For example, in an electric vehicle or a hybrid vehicle, the motor is used in an environment where the ATF falls. According to this configuration, the O-ring can suppress the ATF from entering the housing. As a result, the ATF can be prevented from entering the inverter side from the inside of the housing.

  According to the present invention, the electrical connection work between the motor and the inverter can be performed efficiently.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. 1 to 4 and FIG. The relay connector 10 according to the present embodiment is disposed and used at a position corresponding to the relay connector 3 in FIG. 8 according to the prior art. The components common to those in FIG. 8 are denoted by the same reference numerals.

  The relay connector 10 is disposed on a vehicle body 11 such as an electric vehicle or a hybrid vehicle, and includes an inverter 2 (corresponding to a first device) disposed on the vehicle body 11 and a motor 1 (corresponding to a second device). Electrical connection is made (see FIG. 8).

  The inverter 2 is provided with an inverter side terminal 12 (corresponding to a first device side terminal) (see FIG. 4).

  The motor 1 is accommodated in a case 4 (corresponding to a partition wall). The case 4 partitions the inverter 2 and the motor 1. The motor 1 is used in a state where it can be exposed to a cooling liquid (for example, ATF) in the case 4. The motor 1 is provided with a motor side terminal 13 (corresponding to a second device side terminal) (see FIG. 4).

  As shown in FIG. 2, a through hole 14 for attaching the relay connector 10 is accommodated in the case 4 in an area where the inverter 2 is disposed (an area above the case 4 in FIG. 2) and the motor 1. 2 (through the lower side of the case 4 in FIG. 2). The relay connector 10 is disposed in the case 4 so as to penetrate the through hole 14.

  The relay connector 10 includes a synthetic resin housing 15, a metal first contact 16 projecting upward from the housing 15 in FIG. 2 (the direction in which the inverter 2 is disposed), and the housing 15 from FIG. 2. The metal 2nd contactor 17 which protrudes below in (the direction where the motor 1 is arrange | positioned) is provided.

  As shown in FIG. 4, in a state where the inverter 2 and the motor 1 are attached to the normal positions, the inverter side terminal 12 is positioned above the first contact 16, and the motor side terminal 13 is It is located below the two contacts 17.

  The housing 15 is formed by combining a first housing 26 located on the upper side (inverter 2 side) and a second housing 27 located on the lower side (motor 1 side) in FIG.

  The first housing 26 includes a plate-shaped first flange 18, and a plurality of (three in the present embodiment) first tube portions 19 that form a cylindrical shape projecting upward in FIG. 2 from the first flange 18. Is provided. The three first cylindrical portions 19 are provided side by side in the left-right direction in FIG. A first cavity 20 is formed in the first tube portion 19. The cross-sectional shape of the first cavity 20 is circular.

  The second housing 27 has a plate-like second flange 21, and a plurality (three in this embodiment) of second cylindrical portions 22 having a cylindrical shape protruding downward from the second flange 21 in FIG. Is provided. The three second cylindrical portions 22 are provided side by side in the left-right direction in FIG. A second cavity 23 is formed in the second cylindrical portion 22. The cross-sectional shape of the second cavity 23 is circular.

  In the state where the first housing 26 and the second housing 27 are combined from above and below in FIG. 2, the first cylindrical portion 19 and the second cylindrical portion 22 are formed at corresponding positions. In a state where the first housing 26 and the second housing 27 are combined, the first cavity 20 and the second cavity 23 communicate with each other.

  In the first flange 18 and the second flange 21, a first collar mounting hole 24 penetrating in the vertical direction in FIG. 2 and a corresponding position in a state where the first housing 26 and the second housing 27 are combined, respectively. A second collar attachment hole 25 is formed. As shown in FIG. 1, the first collar mounting holes 24 are arranged in the direction in which the first tube portions 19 are arranged, and two are formed at both left and right end portions of the first flange 18 in FIG. 1. Although not shown in detail, the second collar mounting holes 25 are also arranged in the direction in which the second cylindrical portions 22 are arranged, and two are formed at both left and right ends of the second flange 21. The first collar mounting hole 24 and the second collar mounting hole 25 communicate with each other in a state where the first housing 26 and the second housing 27 are combined. A metal collar 28 is attached to each of the first collar attachment hole 24 and the second collar attachment hole 25.

  In the case 4, two screw holes 29 are formed in the vertical direction in FIG. 2 at positions corresponding to the first collar mounting hole 24 and the second collar mounting hole 25.

  The bolts 31 are inserted into the collar 28 via the washers 30 and screwed into the screw holes 29, whereby the first housing 26 and the second housing 27 are combined to form the housing 15, and the housing 15 Is fixed to the case 4.

  A portion of the second flange 21 that faces the upper surface of the case 4 in FIG. Although not shown in detail, the groove 32 is formed in a loop shape surrounding the three second cylindrical portions 22. An O-ring 33 is fitted in the groove 32. With the housing 15 fixed to the case 4, the outer peripheral surface of the O-ring 33 is in close contact with the upper surface of the case 4 and the inner peripheral surface of the groove 32 in FIG. 2, thereby sealing between the case 4 and the housing 15. The

  A first insertion hole 35 that allows the first cavity 20 and the outside to communicate with each other is inserted in the upper wall 34 in FIG. As shown in FIG. 1, the cross-sectional shape of the first insertion hole 35 is circular.

  The first contact 16 protrudes upward from the first insertion hole 35 in FIG. A portion of the first contact 16 that protrudes upward from the housing 15 has a round bar shape and serves as a first pin 36. A portion of the first contactor 16 located in the first cavity 20 of the first housing 26 is a first fitting cylinder portion 38 that is fitted on the outer periphery of the upper end portion of the shaft 37 described later. The 1st fitting cylinder part 38 has comprised the substantially cylindrical shape. Although not shown in detail, the first fitting cylinder portion 38 is formed in a louver terminal shape.

  The outer diameter of the first pin 36 is set smaller than the inner diameter of the first insertion hole 35. The first pin 36 is inserted into the first insertion hole 35 and can be displaced in the vertical direction in FIG.

  The outer diameter of the first fitting cylinder portion 38 is set larger than the inner diameter of the first insertion hole 35. When the first fitting cylinder portion 38 contacts the upper wall 34 of the first cylinder portion 19 in FIG. 2 from below, the first contact 16 is restricted from being displaced upward. The outer diameter dimension of the first fitting cylinder portion 38 is set smaller than the inner diameter dimension of the first cavity 20. Thereby, the 1st fitting cylinder part 38 can be displaced in the up-down direction within the 1st cavity 20. As shown in FIG.

  A second insertion hole 40 that allows the second cavity 23 and the outside to communicate with each other is inserted in the lower wall 39 in FIG. 2 of the second cylindrical portion 22 in the vertical direction in FIG. Although not shown in detail, the cross-sectional shape of the second insertion hole 40 is circular.

  From the 2nd insertion hole 40, the 2nd contactor 17 protrudes toward the downward direction in FIG. A portion of the second contact 17 that protrudes upward from the housing 15 has a round bar shape and serves as a second pin 41. A portion of the second contactor 17 located in the second cavity 23 of the second housing 27 serves as a second fitting cylinder portion 42 that is fitted on the outer periphery of the lower end portion of the shaft 37 described later. The second fitting cylinder part 42 has a substantially cylindrical shape. Although not shown in detail, the second fitting cylinder portion 42 is formed in a louver terminal shape.

  The outer diameter of the second pin 41 is set smaller than the inner diameter of the second insertion hole 40. The second pin 41 is inserted into the second insertion hole 40 and can be displaced in the vertical direction in FIG.

  The outer diameter of the second fitting cylinder portion 42 is set larger than the inner diameter of the second insertion hole 40. The outer diameter dimension of the second fitting cylinder portion 42 is set smaller than the inner diameter dimension of the second cavity 23. Thereby, the 2nd fitting cylinder part 42 can be displaced in the up-down direction within the 2nd cavity 23. As shown in FIG.

  An O-ring 43 is fitted on the outer periphery of the second pin 41. The inner peripheral surface of the O-ring 43 is in close contact with the outer peripheral surface of the second pin 41. Further, the outer peripheral surface of the O-ring 43 is in close contact with the inner peripheral surface of the second cavity 23. Thereby, the space between the second pin 41 and the second housing 27 is sealed. Moreover, when the lower surface of the O-ring 43 in FIG. 2 contacts the lower wall 39 of the second cylindrical portion 22 from above, the second contact 17 is restricted from being displaced downward.

  Inside the first cavity 20 and the second cavity 23, a metal shaft 37 is accommodated with its axis line directed in the vertical direction in FIG. The cross-sectional shape of the shaft 37 is circular. A first fitting cylinder portion 38 is fitted on the outer periphery of the upper end portion of the shaft 37 in FIG. The outer diameter dimension of the shaft 37 is set to be the same as or slightly smaller than the inner diameter dimension of the first fitting cylinder portion 38. Thereby, the first contact 16 is slidable in the vertical direction in FIG.

  Moreover, the 2nd fitting cylinder part 42 is engage | inserted by the outer periphery of the lower end part of the shaft 37 in FIG. The outer diameter dimension of the shaft 37 is set to be the same as or slightly smaller than the inner diameter dimension of the second fitting cylinder portion 42. Thereby, the second contact 17 can slide in the vertical direction in FIG. 2 with respect to the shaft 37. The shaft 37 is displaced downward by its own weight, and the lower end portion of the shaft 37 is in contact with the inner wall of the second fitting cylinder portion 42 from above.

  As described above, the first fitting cylinder part 38 and the second fitting cylinder part 42 have a louver terminal shape. As a result, the first contact 16 and the shaft 37 are electrically connected via the first fitting cylinder 38, and the shaft 37 and the second contact 17 are connected via the second fitting cylinder 42. Are electrically connected.

  A coil spring 44 (corresponding to an elastic member) is fitted on the outer periphery of the shaft 37. The upper end portion of the coil spring 44 in FIG. 2 is in contact with the lower edge of the first fitting cylinder portion 38 from below. Thereby, the coil spring 44 urges the first contact 16 upward, and the first contact 16 is given springiness.

  Further, the lower end portion of the coil spring 44 in FIG. 2 is in contact with the upper edge of the second fitting cylinder portion 42 from above. Thereby, the coil spring 44 urges the second contact 17 downward, and the second contact 17 is provided with a spring property.

  As shown in FIG. 3, in a natural state where no load is applied to the first contactor 16, the protruding dimension of the first pin 36 from the upper surface of the upper wall 34 of the first housing 26 is L1. ing. On the other hand, in a state where the inverter 2 and the housing 15 are attached to the regular positions, the dimension between the lower surface of the inverter side terminal 12 and the upper surface of the upper wall 34 of the first housing 26 in FIG. In the present embodiment, L3 is set to L1 or less.

  Further, as shown in FIG. 3, in a natural state where no load is applied to the second contactor 17, the projecting dimension of the second pin 41 from the lower surface of the lower wall 39 of the second housing 27 is L2. It has become. On the other hand, in a state where the motor 1 and the housing 15 are attached to the regular positions, the dimension between the upper surface of the motor side terminal 13 and the lower surface of the lower wall 39 of the second housing 27 in FIG. In the present embodiment, L4 is set to L2 or less.

  As shown in FIG. 4, in a state where the inverter 2 and the housing 15 are disposed at regular positions, the first pin 36 protruding from the housing 15 abuts on the inverter side terminal 12 from below. In this state, the first pin 36 is pressed downward from the inverter-side terminal 12 and displaced downward. Then, the coil spring 44 contracts and deforms in the vertical direction. As a result, a spring force (elastic force) is generated in the coil spring 44, and the first pin 36 is urged upward. As a result, the first pin 36 is pressed against the inverter side terminal 12 from below.

  On the other hand, in a state where the motor 1 and the housing 15 are disposed at regular positions, the second pin 41 protruding from the housing 15 contacts the motor side terminal 13 from above. In this state, the second pin 41 is pressed upward from the inverter-side terminal 12 and displaced upward. Then, the coil spring 44 contracts and deforms in the vertical direction. As a result, a spring force (elastic force) is generated in the coil spring 44, and the second pin 41 is urged downward. As a result, the second pin 41 is pressed against the inverter side terminal 12 from above.

  Then, the effect | action and effect of this embodiment are demonstrated. First, the relay connector 10 is assembled as follows. An O-ring 43 is fitted on the outer periphery of the second pin 41. The second housing 27 is arranged in such a posture that the second cavity 23 opens upward. The second contact 17 is accommodated in the second cavity 23 from above with the second pin 41 facing downward. The second pin 41 is inserted through the second insertion hole 40 and protrudes downward from the second housing 27.

  The shaft 37 is inserted from above the second cavity 23, and the lower end portion of the shaft 37 is inserted into the second fitting cylinder portion 42 while sliding from above. Thereby, the second contact property and the shaft 37 are electrically connected. The coil spring 44 is fitted on the outer periphery of the shaft 37 from above. The first cylindrical fitting portion of the first contactor 16 is fitted into the outer periphery of the upper end portion of the shaft 37 while being in sliding contact. As a result, the second contact 17 and the first contact 16 are electrically connected via the shaft 37.

  An O-ring 33 is fitted into the groove 32 of the second flange 21. The O-ring 33 can be fitted into the groove 32 in an arbitrary process before the housing 15 is screwed to the case 4. The first housing 26 is assembled to the second housing 27 from above. At this time, the first pin 36 is inserted into the first insertion hole 35, and the first pin 36 protrudes upward from the first housing 26.

  While the second cylindrical portion 22 of the second housing 27 is accommodated in the through hole 14 of the case 4, the first collar mounting hole 24 insertion hole and the second collar mounting hole 25 are aligned with the screw hole 29 of the case 4. Let The bolt 31 is inserted into the collar 28 and the screw hole 29 and screwed into the screw hole 29. Accordingly, the first housing 26 and the second housing 27 are fixed to form the housing 15, and the housing 15 is fixed to the normal position of the case 4.

  In this state, the first housing 26 and the second housing 27 are pressed against each other in the vertical direction in FIG. Thereby, the outer peripheral surface of the O-ring 43 fitted to the second pin 41 is in close contact with the inner peripheral surface of the second cavity 23. As a result, the space between the second contact 17 and the housing 15 is sealed. Also, the lower surface in FIG. 3 of the O-ring 33 fitted in the groove 32 and the upper surface of the case 4 in FIG.

  Next, the motor 1 is assembled at the normal position of the vehicle body 11. Then, the motor side terminal 13 contacts the second pin 41 from below in FIG. Then, the second pin 41 is pressed upward in FIG. As a result, the coil spring 44 is elastically compressed and deformed. As a result, the second pin 41 comes into contact with the motor side terminal 13 while exerting a pressing force from above in FIG. Thereby, the motor side terminal 13 and the 2nd pin 41 are electrically connected.

  Subsequently, the inverter 2 is assembled at the normal position of the vehicle body 11. Then, the inverter-side terminal 12 contacts the first pin 36 from above in FIG. Then, the first pin 36 is pressed downward in FIG. As a result, the coil spring 44 is elastically compressed and deformed. As a result, due to the spring force (elastic force) of the coil spring 44, the first pin 36 contacts the inverter side terminal 12 while exerting a pressing force from below in FIG. Thereby, the inverter side terminal 12 and the 1st pin 36 are electrically connected.

  According to the present embodiment, the inverter-side terminal 12 and the first contact 16 are brought into contact with each other, and the motor-side terminal 13 and the second contact are merely provided by arranging the inverter 2, the motor 1 and the relay connector 10 at regular positions. The child 17 can be brought into contact. Thereby, the electrical connection of the inverter side terminal 12 and the motor side terminal 13 can be performed efficiently.

  Further, according to the present embodiment, when the inverter 2 and the housing 15 are disposed at regular positions, the first contactor 16 having springiness is pressed against the inverter side terminal 12 and is opposite to the inverter side terminal 12. Shrink in the direction. Then, a spring force is generated in the first contact 16. By this spring force, the first contact 16 is reliably in contact with the inverter side terminal 12. Similarly, when the motor 1 and the housing 15 are disposed at regular positions, the second contactor 17 having springiness is pressed by the motor side terminal 13 and contracts in the opposite direction to the motor side terminal 13. Then, a spring force is generated in the second contact 17. Due to this spring force, the second contact 17 is reliably in contact with the motor-side terminal 13.

  Further, according to the present embodiment, the coil spring 44 accommodated in the cavity of the housing 15 can impart spring properties to the first contact 16 and the second contact 17.

  Further, according to the present embodiment, since the first contact 16 and the second contact 17 are electrically connected by the shaft 37, a large current can be passed through the relay connector 10.

  For example, in an electric vehicle or a hybrid vehicle, the motor 1 is used in an environment where the ATF gets off. According to this configuration, the ATF can be prevented from entering the housing 15 by the O-ring 43 fitted in the groove 32 of the second flange 21. As a result, the ATF can be prevented from entering the inverter 2 from the inside of the housing 15.

<Embodiment 2>
Next, Embodiment 2 of the present invention will be described with reference to FIG. In the present embodiment, the second contactor 17 is integrally formed with a rod-shaped shaft portion 50 having a circular cross section. Since other configurations are the same as those in the first embodiment, the same members are denoted by the same reference numerals, and redundant description is omitted.

  According to this embodiment, since the 2nd contactor 17 and the shaft part 50 are integrally formed, the number of parts can be reduced. In addition, since only the first contact 16 is a member that is electrically connected while sliding with the shaft portion 50, the electrical connection reliability in the relay connector 10 is improved.

<Embodiment 3>
Next, Embodiment 3 of the present invention will be described with reference to FIG. In the present embodiment, a groove 60 is formed on the inner peripheral surface of the second insertion hole 40 formed in the second housing 27 by being retracted radially outward of the second insertion hole 40. An O-ring 61 is fitted in the groove 60. A second pin 41 penetrates through the O-ring 61 in the vertical direction in FIG.

  According to the present embodiment, the inner peripheral surface of the O-ring 61 is in close contact with the outer peripheral surface of the second pin 41. Further, the outer peripheral surface of the O-ring 61 is in close contact with the inner peripheral surface of the groove 32. Thereby, the space between the second contact 17 and the housing 15 is sealed.

  Moreover, in this embodiment, the lower surface of the 2nd fitting cylinder part 42 in FIG. 6 contacts the bottom wall in FIG. 6 of the 2nd cylinder part 22 from upper direction, and the 2nd contactor 17 is below. Displacement is restricted.

  Since the configuration other than the above configuration is substantially the same as that of the first embodiment, the same reference numerals are given to the same members, and duplicate descriptions are omitted.

  According to the present embodiment, since the O-ring 61 is fitted in the groove 32, the O-ring 61 is not displaced in the vertical direction in FIG. Thereby, the space between the second contact 17 and the housing 15 can be reliably sealed.

<Embodiment 4>
Next, a fourth embodiment of the present invention will be described with reference to FIG. The housing 70 made of synthetic resin passes through the inside of the through hole 14 of the case 4 below the third housing 71 and the third housing 71 located on the upper side (inverter 2 side) in FIG. The fourth housing 72 and the fifth housing 73 located on the lower side (motor 1 side) in FIG.

  The third housing 71 includes a plate-like third flange 74 and a third cylindrical portion 75 having a cylindrical shape protruding upward from the third flange 74 in FIG. A third cavity 76 is formed in the third cylindrical portion 75. The cross-sectional shape of the third cavity 76 is circular.

  The fourth housing 72 includes a plate-like fourth flange 77 and a fourth cylindrical portion 78 having a cylindrical shape protruding downward from the fourth flange 77 in FIG. The fourth cylinder 78 is formed with a fourth cavity 79 that is recessed downward at a position near the upper end in FIG. The cross-sectional shape of the fourth cavity 79 is circular.

  In the state in which the third housing 71 and the fourth housing 72 are combined from above and below in FIG. 2, the third cylindrical portion 75 and the fourth cylindrical portion 78 are respectively formed at corresponding positions. In a state where the third housing 71 and the fourth housing 72 are combined, the third cavity 76 and the fourth cavity 79 communicate with each other.

  A portion of the fourth flange 77 facing the upper surface of the case 4 in FIG. 7 is recessed upward to form a groove 80. Although not shown in detail, the groove 80 is formed in a loop shape that surrounds the periphery of the fourth cylindrical portion 78. An O-ring 81 is fitted in the groove 80. With the housing 70 fixed to the case 4, the outer peripheral surface of the O-ring 81 is in close contact with the upper surface of the case 4 and the inner peripheral surface of the groove 80 in FIG. 7, thereby sealing between the case 4 and the housing 70. The

  Although the third housing 71, the fourth housing 72, and the case 4 are not shown in detail, they can be assembled by screwing them with bolts, for example, as in the first embodiment.

  A fifth cavity 82 that sinks upward in FIG. 7 is formed at the lower end of the fourth cylindrical portion 78. The fifth cavity 82 has a circular cross-sectional shape.

  A fifth housing 73 is fitted to a portion of the fourth cylindrical portion 78 that protrudes downward from the lower surface of the case 4 in FIG. 7 so as to surround the outer periphery of the fourth cylindrical portion 78 from below. . The fourth housing 72 and the fifth housing 73 are assembled by a known method such as screwing.

  A third insertion hole 84 that allows the third cavity 76 and the outside to communicate with each other is inserted in the upper wall 83 in FIG. From the third insertion hole 84, the first contact 16 protrudes upward in FIG.

  A fourth insertion hole 86 that allows the fifth cavity 82 of the fourth housing 72 to communicate with the outside is inserted in the lower wall 85 of the fifth cavity 82 in FIG. 7 in the vertical direction in FIG. From the 4th insertion hole 86, the 2nd contactor 17 protrudes toward the downward direction in FIG.

  The fourth housing 72 is formed by insert molding a metal shaft 87. The fourth housing 72 is arranged in such a posture that the axis of the shaft 87 faces the vertical direction in FIG. As shown in FIG. 7, the upper end portion of the shaft 87 protrudes into the fourth cavity 79 and is accommodated in the fourth cavity 79 and the third cavity 76. Further, the lower end portion of the shaft 87 projects into the fifth cavity 82.

  The cross section of the shaft 87 has a circular shape. A small diameter portion 88 having a smaller diameter than other portions is formed in the shaft 87 at a substantially central position in the vertical direction in FIG. The small diameter portion 88 is embedded in the fourth housing 72. The synthetic resin that forms the fourth housing 72 enters the region where the small-diameter portion 88 is formed. Thereby, the vertical force in FIG. 7 applied to the shaft 87 can be received by the synthetic resin forming the fourth housing 72. As a result, the shaft 87 can be prevented from coming off from the fourth housing 72.

  Although not illustrated in detail, an adhesive is applied to the small diameter portion 88. As a result, the adhesion between the shaft 87 and the fourth housing 72 is further improved.

  A first fitting cylinder portion 38 is fitted on the outer periphery of the upper end portion of the shaft 87 in FIG. The outer diameter dimension of the shaft 87 is set to be the same as or slightly smaller than the inner diameter dimension of the first fitting cylinder portion 38. Thereby, the first contact 16 can slide in the vertical direction in FIG.

  Moreover, the 2nd fitting cylinder part 42 is engage | inserted by the outer periphery of the lower end part of the shaft 87 in FIG. The outer diameter of the shaft 87 is set to be the same as or slightly smaller than the inner diameter of the second fitting cylinder portion 42. Thereby, the second contact 17 can slide in the vertical direction in FIG.

  A first coil spring 89 (corresponding to a first elastic member) is fitted on the outer periphery of a portion of the shaft 87 accommodated in the third cavity 76 and the fourth cavity 79. The upper end portion of the first coil spring 89 in FIG. 7 is in contact with the lower edge of the first fitting tube portion 38 from below. Thereby, the first coil spring 89 biases the first contact 16 upward, and the first contact 16 is provided with a spring property. Although not illustrated in detail, the lower end portion of the first coil spring 89 in FIG. 7 is in contact with the bottom wall 90 of the fourth cavity 79 from above.

  A second coil spring 92 (corresponding to a second elastic member) is fitted on the outer periphery of a portion of the shaft 87 protruding into the fifth cavity 82. The lower end portion of the second coil spring 92 in FIG. 7 is in contact with the upper edge of the second fitting cylinder portion 42 from above. Thereby, the coil spring 44 urges the second contact 17 downward, and the second contact 17 is provided with a spring property. Although not illustrated in detail, the upper end portion of the second coil spring 92 in FIG. 7 is in contact with the bottom wall 91 of the fifth cavity 82 from below.

  Since the configuration other than the above is substantially the same as that of the first embodiment, the same members are denoted by the same reference numerals, and redundant description is omitted.

  According to this embodiment, the shaft 87 is insert-molded in the fourth housing 72. Thereby, the space between the shaft 87 and the housing 70 can be reliably sealed.

<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) In the first embodiment, the number of the first cylinder part 19 and the second cylinder part 22 is three. However, the number is not limited to this, and may be one, two, or four or more.
(2) In the present embodiment, the elastic member is a coil spring. However, the elastic member is not limited to this, and may be a bamboo shoot spring or a leaf spring. The first contactor 16 and the second contactor 17 have a spring property. Any elastic member can be used as long as it can be applied.

The top view of the relay connector which concerns on Embodiment 1 of this embodiment AA line sectional view in FIG. BB sectional view in FIG. Cross-sectional side view of the inverter-side terminal, motor-side terminal, and relay connector with the inverter, motor, and relay connector arranged at regular positions Side sectional view of the relay connector according to the second embodiment Side sectional view of relay connector according to Embodiment 3 Side sectional view of relay connector according to Embodiment 4 Partially cutaway sectional view showing a mounting structure of a relay connector according to the prior art

Explanation of symbols

1 ... Motor (second device)
2 ... Inverter (first device)
4 ... Case (partition)
DESCRIPTION OF SYMBOLS 10 ... Relay connector 16 ... 1st contact 17 ... 2nd contact 20 ... 1st cavity 23 ... 2nd cavity 37, 87 ... Shaft 43 ... O-ring 44 ... Coil spring (elastic member)
76 ... 3rd cavity 79 ... 4th cavity 82 ... 5th cavity 89 ... 1st coil spring (1st elastic member)
92 ... Second coil spring (second elastic member)

Claims (6)

The first device side terminal provided in the first device and the second device side terminal provided in the second device are electrically connected to a partition wall that partitions the first device and the second device. A relay connector to be connected
A housing disposed in the partition, a first contact projecting from the housing toward the first device side terminal with a spring property, and electrically connected to the first contact and the A second contactor projecting from the housing toward the second device side terminal with springiness, and in a state where the first device, the second device and the housing are disposed at regular positions, The relay connector, wherein the first contactor contacts the first device side terminal by the spring force, and the second contactor contacts the second device side terminal by the spring force. The dimension between the first device side terminal and the housing in a state in which the first device and the housing are disposed at regular positions is set to be equal to or smaller than the projecting dimension of the first contactor from the housing in a free state. And the dimension between the second device side terminal and the housing in a state in which the second device and the housing are disposed at regular positions is determined from the housing of the second contactor in a free state. The relay connector according to claim 1, wherein the relay connector is set to a projection size or less. The said housing has a cavity, The elastic member for providing spring property to the said 1st contactor and the said 2nd contactor is accommodated in the said cavity. Item 3. The relay connector according to Item 2. The housing has a cavity, and a first elastic member for imparting spring property to the first contact and a second elastic member for imparting spring property to the second contact in the cavity. The relay connector according to claim 1 or 2, wherein the relay connector is accommodated. The housing has a cavity, a metal shaft is accommodated in the cavity, one end of the shaft is electrically connected to the first contact, and the other end of the shaft is the first The relay connector according to claim 1, wherein the relay connector is electrically connected to the two contacts. The first device is an inverter, the second device is a motor, an O-ring is fitted on the outer periphery of the second contact, and the outer periphery of the O-ring and the housing are in contact with each other. The relay connector according to any one of claims 1 to 5, wherein a space between the second contact and the housing is sealed.

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