WO2022244465A1 - 端子台ユニット - Google Patents
端子台ユニット Download PDFInfo
- Publication number
- WO2022244465A1 WO2022244465A1 PCT/JP2022/013964 JP2022013964W WO2022244465A1 WO 2022244465 A1 WO2022244465 A1 WO 2022244465A1 JP 2022013964 W JP2022013964 W JP 2022013964W WO 2022244465 A1 WO2022244465 A1 WO 2022244465A1
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- WO
- WIPO (PCT)
- Prior art keywords
- terminal
- case
- terminal block
- connector
- block unit
- Prior art date
Links
- 230000013011 mating Effects 0.000 claims description 55
- 238000006073 displacement reaction Methods 0.000 claims description 24
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 description 16
- 230000004308 accommodation Effects 0.000 description 13
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 229920003002 synthetic resin Polymers 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
- H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/44—Means for preventing access to live contacts
- H01R13/447—Shutter or cover plate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/22—Bases, e.g. strip, block, panel
- H01R9/24—Terminal blocks
- H01R9/2491—Terminal blocks structurally associated with plugs or sockets
Definitions
- the present disclosure relates to a terminal block unit.
- Patent Document 1 discloses a terminal block unit including a case and a terminal block.
- the terminal block has a composite connector.
- a composite connector is configured by integrating a power connector and a signal connector.
- the power connector is connected to the power cable.
- the signal connector is connected to the signal cable. Power cables and signal cables are housed inside the case.
- the terminal block unit is also disclosed in Patent Document 2 and Patent Document 3.
- the signal connector has a hood protruding on the side opposite to the side connected to the signal cable.
- a mating connector paired with the signal connector is fitted to the hood. If the case has a structure that also covers the hood, providing a space for accommodating the mating connector inside the case causes the problem of increasing the size of the case.
- an object of the present disclosure is to provide a terminal block unit capable of suppressing an increase in size of the case.
- a terminal block unit of the present disclosure includes a terminal block and a case for arranging the terminal block inside, wherein the terminal block includes a bus bar and connection terminals separate from the bus bar. , and a main body that holds the busbar and the connection terminal, the case has an access hole that allows access to the busbar, and further includes a cover that closes the access hole, the cover comprising: A connector is arranged inside the cover, and the connector has a conductive member electrically connected to the connection terminal.
- FIG. 1 is a schematic cross-sectional view of a terminal block unit according to Example 1 of the present embodiment, viewed from the front.
- FIG. 2 is a schematic cross-sectional view of the terminal block unit viewed from the side.
- FIG. 3 is an enlarged cross-sectional view showing a state in which the connector is placed inside the cover and the cover closes the access hole.
- FIG. 4 is an enlarged cross-sectional view showing a state in which the terminal block is supported by the mounting wall of the first case, and the connection terminals and the conductive member are electrically connected through the relay connector portion.
- FIG. 5 is an enlarged cross-sectional view showing a state in which the connection terminal and the conductive member are directly electrically connected in the terminal block unit according to Example 2 of the present embodiment.
- the terminal block unit of the present disclosure is (1) A terminal block unit including a terminal block and a case for arranging the terminal block inside, wherein the terminal block includes a bus bar, connection terminals separate from the bus bar, the bus bar and the a main body holding connection terminals, the case having an access hole that allows access to the bus bar, and a cover that closes the access hole, the cover being provided inside the cover. It has a connector disposed thereon, said connector having conductive members electrically connected to said connection terminals. According to the above configuration, since the connector is arranged inside the cover, it is not necessary to secure a space for accommodating the entire connector inside the case.
- the case has a first case that supports the main body and a second case that is formed with the access hole, and the second case covers the main body and is fixed to the first case. preferably. According to the above configuration, after the main body is supported by the first case, the second case can be fixed to the first case, thereby improving the ease of assembly.
- the first case has an opening in a mounting wall for fixing the second case, the main body is arranged to pass through the opening, and the connection terminals are arranged in the first case. It may have a first end connected to the housed wiring and a second end electrically connected to the conductive member.
- the connection terminal has a shape extending from the first end to the second end in a direction penetrating the opening of the mounting wall, so that the total length of the connection terminal can be shortened.
- connection terminal is L-shaped and extends through the main body, and the second end is exposed from the main body and arranged to face the access hole. According to the above configuration, the second ends of the connection terminals can be connected to the conductive member at the same time that the connector is inserted through the access hole.
- connection terminal is L-shaped, for example, the wiring connected to the first end of the connection terminal can be arranged in a direction along the wall surface of the mounting wall, and the space in the first case can be effectively used. can be used for
- the second case has an outer shape smaller than that of the first case.
- the first case is larger than the second case. If the insertion hole for the connector were to be formed in the large first case, the opening diameter of the insertion hole would be large because the first case would be designed in consideration of the occurrence of blowholes.
- an access hole that can be an insertion hole for the connector is formed in the second case, which is small in size, it is not necessary to form an insertion hole with a large opening diameter in the first case. As a result, there is no need to attach a large-sized connector or sealing member to the first case.
- connection portion on the connection terminal side may be the connection terminal itself that is directly connected to the conductive member, or may be a relay connection portion such as a mating terminal interposed between the connection terminal and the conductive member. .
- an elastic member that is elastically deformable in a direction crossing the front-rear direction is arranged between the inner periphery of the access hole and the connector in the case. According to the above configuration, elastic deformation of the elastic member allows the conductive member to be displaced in a direction intersecting the front-rear direction and reach a position where it can be electrically connected to the connection portion.
- the elastic member can also have the function of sealing between the case and the connector.
- the connector is provided between a terminal holding portion that holds the conductive member, a housing that arranges the terminal holding portion inside, and the terminal holding portion and the housing, and the terminal holding portion is provided with the terminal holding portion. and a displacement permitting portion that permits displacement in a direction intersecting the front-rear direction.
- connection portion on the connection terminal side is accommodated in a mating housing that is a mating partner of the connector, and the main body includes a retainer that holds the mating housing displaceably in a direction intersecting the front-rear direction. It is good if it is installed. According to the above configuration, since the connection portion on the side of the connection terminal can be displaced along with the mating housing in the direction intersecting the front-rear direction, the manner of displacement of the connection portion on the side of the connection terminal can be determined between the retainer and the main body. can be done.
- the connecting portion on the connecting terminal side is a mating terminal housed in the mating housing, and the mating terminal is connected to the connecting terminal via a flexible electric wire. According to the above configuration, when the mating terminal is displaced in the direction intersecting the front-rear direction, the flexible electric wire can be deformed, thereby suppressing the stress caused by the displacement of the mating terminal from reaching the connection terminal. can be done.
- connection portion on the side of the connecting terminal with respect to the conductive member is arranged so as to face the access hole. According to the above configuration, the connection portion on the connection terminal side and the conductive member can be connected to each other at the same time that the connector is inserted into the access hole. As a result, the work of inserting the connector into the access hole and the work of connecting the connection portion of the connection terminal side and the conductive member need not be performed separately, and the ease of assembly can be improved.
- Example 1 of the present embodiment exemplifies the terminal block unit 10 mounted on a vehicle such as an electric vehicle or a hybrid vehicle.
- the terminal block unit 10 includes cases 20 and 21, a terminal block 60 arranged in the cases 20 and 21, a cover 50 attached to the cases 20 and 21, and a terminal block inside the cover 50. and a connector 30 arranged thereon.
- the cases 20 and 21 have a first case 20 as a motor case that accommodates the motor M, and a second case 21 as an inverter case that accommodates an inverter (not shown). Hydraulic fluid such as ATF (Automatic Transmission Fluid) oil is stored in the first case 20 .
- the terminal block 60 connects the motor M and the inverter, and as shown in FIG. there is As the connection terminal 62, a temperature detection thermistor terminal for detecting the coil temperature of the motor M can be exemplified.
- the vertical direction is based on the vertical direction in each drawing.
- the upper side is the side on which the second case 21 is arranged with respect to the first case 20 .
- the left-right direction is based on the left-right direction in FIG.
- the left-right direction corresponds to the direction in which the busbars 61 and the connection terminals 62 are arranged on the terminal block 60 .
- the front-rear direction is based on the left-right direction in FIG.
- the front-rear direction corresponds to the direction in which the cases 20 and 21 and the cover 50 are connected.
- the front side is the side where the cover 50 is positioned with respect to the second case 21 .
- the X direction indicates the front-back direction
- the Y direction indicates the left-right direction
- the Z direction indicates the up-down direction.
- the first case 20 is made of metal such as an aluminum alloy, and is formed in a cylindrical or box shape with both left and right ends closed. As shown in FIGS. 1 and 2, the first case 20 is provided with a first accommodation space 22 that accommodates the motor M and wiring 75 extending from the motor M. As shown in FIGS. The first case 20 has a mounting wall 23 on its top. An opening 24 is provided in the mounting wall 23 . The opening 24 extends in the vertical direction, which is the thickness direction of the mounting wall 23 , communicates at its upper end with a second housing space 26 of the second case 21 , and at its lower end with the first housing space 22 of the first case 20 . are in communication.
- the terminal block 60 has a synthetic resin main body 63 that holds the bus bar 61 and the connection terminals 62 .
- the main body 63 is attached to and supported by the attachment wall 23 while penetrating through the opening 24 .
- the main body 63 has a collar portion 64 fixed to the upper surface of the mounting wall 23 .
- an annular groove 65 is provided on the lower surface of the flange portion 64 .
- a seal ring 66 is mounted in the annular groove 65 . The seal ring 66 seals between the flange portion 64 of the main body 63 and the mounting wall 23 .
- the main body 63 holds three bus bars 61 side by side in the left-right direction.
- the bus bar 61 is a plate-shaped conductor extending in the vertical direction, and is insert-molded in the main body 63 with the plate surface facing in the front-rear direction.
- An upper portion of the busbar 61 protrudes from the main body 63 into the second accommodation space 26 .
- a lower portion of the bus bar 61 protrudes from the main body 63 into the first accommodation space 22 .
- Fixing holes 67 are provided in upper and lower portions of bus bar 61 .
- the fixing hole 67 is also provided in a mating bus bar provided in an inverter (not shown).
- the upper portion of the busbar 61 and the mating busbar are overlapped in the plate thickness direction, and bolts are inserted through the fixing holes 67 on both sides and fastened to the nuts, thereby electrically connecting the busbar 61 and the mating busbar.
- the busbar 61 and a conductor (not shown) on the motor M side are also fastened and electrically connected via a bolt inserted through a fixing hole 67 in the lower portion of the busbar 61 .
- the main body 63 holds two connection terminals 62 side by side in the left-right direction at positions adjacent to the busbars 61 .
- the connection terminal 62 is a pin-shaped or plate-shaped conductor elongated as a whole, and is insert-molded in the main body 63 .
- two connection terminals 62 are projected vertically from the terminal block 60 in FIG.
- the two connection terminals 62 are arranged inside the terminal block 60, as will be described later.
- connection terminal 62 has an L-shape when viewed from the side, and has a portion extending vertically through the opening 24 and a portion extending longitudinally on the first case 20 side.
- An upper end portion of the connection terminal 62 is configured as a second end portion 68 projecting from the main body 63 into the second housing space 26 .
- the second end portion 68 is electrically connected to a conductive member 40 to be described later via a relay connector portion 70 .
- a lower front end portion of the connection terminal 62 is configured as a first end portion 69 projecting from the main body 63 into the first housing space 22 of the first case 20 .
- the main body 63 has a primary molded portion 71 that covers the portion of the connection terminal 62 near the first end 69 and a secondary molded portion 72 that covers the portion of the connection terminal 62 near the second end 68 . is doing.
- the primary molded portion 71 is formed by primary insert molding using the connection terminal 62 as a core.
- the secondary mold portion 72 is formed by secondary insert molding using the primary mold portion 71 as a core.
- the primary mold part 71 has a first fitting part 73 that opens forward in the first housing space 22 .
- a first end portion 69 of the connection terminal 62 is arranged inside the first fitting portion 73 .
- the first ends 69 of the two connection terminals 62 are vertically displaced.
- the first fitting portions 73 correspond to the vertically displaced first end portions 69 and are provided in pairs in the vertical direction in the primary mold portion 71 .
- a first housing 74 is fitted into the first fitting portion 73 .
- a first terminal 76 connected to the end of the wiring 75 is accommodated in the first housing 74 .
- the secondary mold part 72 has a second fitting part 77 that opens upward in the second accommodation space 26 .
- a second end portion 68 of the connection terminal 62 is arranged inside the second fitting portion 77 .
- a second housing 78 is fitted into the second fitting portion 77 .
- a second terminal 80 connected to the lower end of the flexible wire 79 is accommodated in the second housing 78 .
- the secondary mold portion 72 has a wall portion 81 that rises upward from a position forward of the second fitting portion 77 .
- a stepped housing holding portion 82 is provided on the upper surface of the wall portion 81 .
- a retainer 83 that is separate from the main body 63 is attached to the wall portion 81 .
- the retainer 83 is arranged at a position facing the housing holding portion 82 .
- a lower surface of the retainer 83 is formed in a stepped shape corresponding to the housing holding portion 82 .
- a mating housing 84 is arranged between the retainer 83 and the housing holding portion 82 .
- the mating housing 84 is engaged with the stepped portions of the housing holding portion 82 and the retainer 83, and is held between the housing holding portion 82 and the retainer 83 so as to be prevented from coming off in the front-rear direction.
- a displacement allowance space 85 is formed between the housing holding portion 82 and the retainer 83 to allow the mating housing 84 to be displaced in a direction crossing the front-rear direction.
- the mating housing 84 can be displaced in the displacement permissible space 85 and can take a posture inclined with respect to the front-rear direction.
- a mating terminal 86 connected to the upper front end of the flexible electric wire 79 is accommodated in the mating housing 84 .
- Flexible wire 79 , second terminal 80 , second housing 78 , mating terminal 86 and mating housing 84 constitute relay connector section 70 .
- the relay connector portion 70 is held by the main body 63 in the second accommodation space 26 .
- the mating housing 84 and the second housing 78 are connected to both ends of the flexible wire 79 respectively.
- the flexible electric wire 79 is bent in an L shape in a side view behind the mating housing 84 and above the second housing 78 . When the mating housing 84 is displaced in the displacement-allowing space 85 , the flexible wire 79 is deformed, thereby changing the relative position with the second housing 78 .
- the mating terminal 86 constitutes a connection portion on the side of the connection terminal 62 with respect to the conductive member 40 .
- the second case 21 is made of metal such as an aluminum alloy, and has a box shape with an open bottom surface.
- the second case 21 has an outer shape smaller than that of the first case 20 .
- the physique of the second case 21 is made smaller than the physique of the first case 20 .
- the second case 21 is provided with a second accommodation space 26 that accommodates the relay connector portion 70, the electronic device 25, and the mating bus bar.
- the second case 21 is placed on the mounting wall 23 of the first case 20 and fastened to the first case 20 via fastening members (not shown).
- the upper part of the terminal block 60 is covered with the second case 21 .
- the electronic device 25 is attached to the top wall of the second case 21 .
- the front wall of the second case 21 is provided with an opening access hole 27 .
- the second housing space 26 can communicate with the outside through the access hole 27 .
- the access hole 27 is a hole for a worker to access the busbar 61 and the mating busbar arranged in the second accommodation space 26 when performing the fastening work of the busbar 61 and the mating busbar.
- the access hole 27 is formed on the inner peripheral side of the brim-shaped flange portion 28 .
- wall 81 and retainer 83 are positioned behind access hole 27 and adjacent access hole 27 .
- the mating housing 84 protrudes toward the access hole 27 and waits for a rear fitting portion 33, which will be described later.
- the cover 50 is made of a metal such as an aluminum alloy and has a plate shape, and is fixed across the first case 20 and the second case 21 while closing the access hole 27 .
- the cover 50 has a cover main body 51 arranged along the vertical direction and the horizontal direction, and an overhanging portion 52 projecting rearward from the outer periphery of the cover main body 51 .
- a through hole 53 is provided in the center of the cover body 51 .
- the connector 30 is arranged to pass through the through hole 53 of the cover 50 in the front-rear direction.
- the connector 30 has a synthetic resin housing 31 and a metal conductive member 40 held by the housing 31 .
- the housing 31 includes a tubular front fitting portion 32 that opens forward, a tubular rear fitting portion 33 that opens rearward, and surrounds the rear fitting portion 33 . and a peripheral surface portion 34 that The front fitting portion 32 is arranged to protrude forward from the through hole 53 of the cover 50 .
- the rear fitting portion 33 and the peripheral surface portion 34 are arranged inside the cover 50 .
- the peripheral surface portion 34 is arranged in the access hole 27 so as to face the flange portion 28 of the second case 21 .
- a groove portion 35 is recessed in the outer peripheral surface of the peripheral surface portion 34 .
- An annular elastic member 36 made of rubber is fitted into the groove 35 .
- the elastic member 36 is sandwiched and held between the peripheral surface portion 34 and the flange portion 28 .
- Elastic member 36 seals between connector 30 and cases 20 and 21 .
- An end housing 37 is fitted to the front fitting part 32 from the front.
- a locking member 38 is attached to the end housing 37 .
- Both the end housing 37 and the locking member 38 are made of synthetic resin.
- the end terminal 90 is accommodated in the end housing 37 .
- the end terminal 90 is electrically connected to an electric wire 91 of external wiring.
- a rubber plug 92 is attached to the electric wire 91 .
- a rubber plug 92 seals between the wire 91 and the end housing 37 .
- the locking member 38 locks the end terminal 90 and prevents the end terminal 90 from coming off.
- a mating housing 84 is fitted to the rear fitting portion 33 from behind.
- An inner circumferential surface of the rear fitting portion 33 is provided with a guiding portion 39 that widens rearward.
- the mating housing 84 is guided into the rear fitting portion 33 along the guiding portion 39 .
- the conductive member 40 is a pin-shaped or plate-shaped terminal extending linearly in the front-rear direction. An intermediate portion in the front-rear direction of the conductive member 40 is insert-molded or press-fitted into the housing 31 . A front end portion of the conductive member 40 is arranged inside the front fitting portion 32 . A rear end portion of the conductive member 40 is arranged inside the rear fitting portion 33 .
- the first housing 74 is fitted into the first fitting portion 73 and the first ends 69 of the connection terminals 62 are connected to the first terminals 76 .
- a conductor on the motor M side is connected to the lower portion of the bus bar 61 .
- the second housing 78 is fitted into the second fitting portion 77 , and the second ends 68 of the connection terminals 62 are connected to the second terminals 80 .
- a mating housing 84 accommodating a mating terminal 86 is held between the retainer 83 and the housing holding portion 82 .
- a main body 63 of the terminal block 60 is attached to the attachment wall 23 while passing through the opening 24 .
- the second case 21 is placed on the mounting wall 23 of the first case 20. From this state, an operator performs the bolt and nut fastening operation through the access hole 27 , and the mating bus bar is connected to the upper portion of the bus bar 61 .
- the connector 30 is inserted through the access hole 27, and the elastic member 36 attached to the peripheral surface portion 34 is arranged in close contact with the inner peripheral surface of the flange portion 28.
- the cover 50 is fixed to the cases 20 and 21 and the housing 31 is covered with the cover 50 except for the front fitting portion 32 .
- the end housing 37 is fitted to the front fitting portion 32 at an appropriate timing, and the front end of the conductive member 40 is connected to the end terminal 90 .
- the rear fitting portion 33 is fitted into the mating housing 84, and the rear end portion of the conductive member 40 is inserted into the mating terminal 86 in the longitudinal direction for connection. be done.
- the mating housing 84 can be displaced in the direction intersecting the front-rear direction while the mating housing 84 slides on the guiding portion 39 .
- the elastic member 36 is elastically deformed, and the housing 31 including the rear fitting portion 33 can also be displaced in the direction crossing the front-rear direction.
- the relative positional relationship between the rear fitting portion 33 of the housing 31 and the mating housing 84 is optimized, and the rear end portion of the conductive member 40 can reach a position where it is connected to the mating terminal 86 .
- the conductive member 40 and the connection terminal 62 are electrically connectable via the relay connector portion 70 .
- the connector 30 is arranged inside the cover 50, there is no need to secure a space for accommodating the entire connector 30 inside the second case 21. As a result, the space of the second case 21 can be saved, and the second case 21 can be prevented from becoming large.
- the connector 30 is inserted through the access hole 27 that allows access to the bus bar 61, there is no need to provide a dedicated hole for inserting the connector 30 in the cases 20, 21. can be prevented from becoming complicated. Furthermore, since the connector 30 can be inserted into the access hole 27 and the conductive member 40 and the mating terminal 86 can be connected at the same time, the ease of assembly can be improved.
- the access hole 27 of the second case 21 is used as an insertion hole for the connector 30, so there is no need to provide an insertion hole with a large opening diameter in the large first case 20.
- the relative positional relationship between the rear fitting portion 33 of the housing 31 and the mating housing 84 is optimized by the displacement allowance space 85, the guiding portion 39 and the elastic member 36. Therefore, the conductive member 40 and the connection terminal 62 can reach a position where they can be electrically connected.
- each structure of a connector 30A including a main body 63A of a terminal block 60A, connection terminals 62A, and a conductive member 40A is different from that of Example 1. . Otherwise, the structure is the same as that of the first embodiment.
- structures identical or corresponding to those of the first embodiment are denoted by the same reference numerals, and overlapping descriptions are omitted.
- a main body 63A of the terminal block 60A has a second fitting portion 77A opening forward in the second housing space 26 of the second case 21 .
- An inner circumferential surface of the second fitting portion 77A is provided with a guide portion 39A that expands forward.
- the connection terminal 62A is L-shaped in a side view and has a portion extending in the front-rear direction.
- a front end portion of the connection terminal 62A is configured as a second end portion 68A.
- the second end portion 68A is arranged inside the second fitting portion 77A.
- the second fitting portion 77A opens toward the access hole 27 and waits for a terminal holding portion 311, which will be described later.
- the connector 30A includes a conductive member 40A, a terminal holding portion 311 holding the conductive member 40A, a housing 31A in which the terminal holding portion 311 is arranged, and a displacement allowance portion interposed between the terminal holding portion 311 and the housing 31A. 312 and .
- the terminal holding portion 311, the housing 31A and the displacement allowing portion 312 are all made of synthetic resin.
- the conductive member 40A is a terminal made of a conductive metal, and has a connection main body portion 41 at its rear portion. The front portion of the conductive member 40A is crimped and electrically connected to the electric wire 91A of the external wiring.
- the terminal holding portion 311 has a terminal accommodating chamber 313 extending in the front-rear direction.
- the conductive member 40A is inserted and accommodated in the terminal accommodating chamber 313 from the front.
- the housing 31A has a cylindrical accommodation recess 314 that opens rearward, a peripheral surface portion 34A that surrounds the outer periphery, and a cylindrical portion 315 that projects forward.
- a through hole 316 is provided in the center of the housing 31A. The rear end of the through hole 316 opens to the front surface on the far side of the housing recess 314 .
- a front portion of the through-hole 316 penetrates the inside of the tubular portion 315, and a front end thereof opens to the front surface of the housing 31A.
- the front portion of the terminal holding portion 311 is accommodated inside the accommodation recess 314 .
- An electric wire 91A connected to the conductive member 40A is drawn forward of the housing 31A through the through hole 316.
- the through hole 316 accommodates the rubber plug 92A and the holder 320 .
- the rubber plug 92A seals between the wire 91A and the housing 31A.
- the holder 320 is engaged with the tubular portion 315 to prevent the rubber plug 92A from coming off.
- An elastic member 36A is attached to the peripheral surface portion 34A, as in the first embodiment.
- the displacement allowance part 312 has a cap shape and is housed inside the housing recess 314 .
- the displacement permitting portion 312 is locked to the housing recess 314 via the locking portion 317 .
- the displacement-allowing portion 312 is arranged so as to be able to come into contact with the step portion of the terminal holding portion 311, and restricts the terminal holding portion 311 from coming out rearward.
- a space portion 330 is formed between the outer peripheral surface of the terminal holding portion 311 including the step portion and the inner peripheral surface of the displacement allowance portion 312 .
- the terminal holding portion 311 can be displaced into the space portion 330 to take a posture inclined with respect to the front-rear direction.
- the rear portion of the terminal holding portion 311 is arranged to protrude rearward from the housing recess 314 of the housing 31A.
- the rear portion of the accommodation recess 314 is arranged in the second accommodation space 26 of the second case 21 in a state where the connector 30A is inserted through the access hole 27 .
- the elastic member 36A attached to the peripheral surface portion 34A is in close contact with the inner peripheral surface of the flange portion 28 as in the first embodiment.
- a front portion of the cylindrical portion 315 is arranged to protrude forward from the through hole 53 of the cover 50 .
- the rear portion of the terminal holding portion 311 is fitted inside the second fitting portion 77A, and the second end portion 68A of the connection terminal 62A is connected to the connection body of the conductive member 40A. It is inserted in the front-rear direction into the portion 41 and electrically connected.
- the rear portion of the terminal holding portion 311 slides on the guiding portion 39A of the second fitting portion 77A, and the displacement within the range of the space portion 330 formed between the displacement allowance portion 312 and the displacement permitting portion 312. , the terminal holding portion 311 can be displaced in a direction crossing the front-rear direction.
- the elastic deformation of the elastic member 36A allows the housing 31A to be displaced in a direction crossing the front-rear direction.
- the terminal holding portion 311 and the second fitting portion 77A are appropriately fitted in the front-rear direction, and the second end portion 68A of the connection terminal 62A can reach a position where it is connected to the conductive member 40A.
- the connection terminal 62A and the conductive member 40A are directly electrically connected. Connected. Therefore, it is possible to connect the conductive member 40 and the connection terminal 62A at the same time that the connector 30A is inserted into the access hole 27, thereby improving the ease of assembly.
- the manner in which the terminal holding portion 311 is displaced into the space portion 330 can be determined according to the displacement permitting portion 312, and thus the manner in which the conductive member 40A is displaced can be determined.
- busbars and the connection terminals are provided in one main body.
- bus bars and connection terminals may be provided on a plurality of main bodies.
- the cover was separate from the connector. However, the cover may have a structure that holds the connector together.
- no member was provided between the cover and the connector to seal them.
- a member may be provided between the cover and the connector to seal both.
- the connection terminals are exemplified by the thermistor terminals extending like pins or plates.
- connection terminals are not limited to thermistor terminals, and may be other sensor terminals or signal terminals.
- the connection terminal may be a crimp terminal having a barrel or a bus bar shape.
- the cases are exemplified by the first case as the motor case and the second case as the inverter case.
- the case may be a case that accommodates devices such as other electronic devices.
- the case may be an integral type in which the first case and the second case cannot be separated.
- the displacement permitting portion was provided between the terminal holding portion and the housing.
- a mere space may be formed between the terminal holding portion and the housing.
- the technology related to the displacement-allowing portion in Example 2 of the above embodiment can also be applied to the connector in Example 1.
- FIG. 1 The technology related to the displacement-allowing portion in Example 2 of the above embodiment can also be applied to the connector in Example 1.
- Collar part 65 Annular groove 66... Seal ring 67... Fixing hole 68 , 68A... Second end 69... First end 70... Relay connector part 71... Primary molded part 72... Secondary molded part 73... First fitting part 74... First housing 75... Wiring 77, 77A... Second 2 Fitting portion 78 Second housing 79 Flexible wire 81 Wall portion 82 Housing holding portion 83 Retainer 84 Mating housing 85 Displacement allowance space 86 Mating terminal (connecting portion on the side of the connecting terminal in the first embodiment ) 90... End terminal 91, 91A... Electric wire 92, 92A... Rubber plug 311... Terminal holding part 312... Displacement allowance part 313... Terminal accommodating chamber 314... Receiving recess 315... Cylindrical part 316... Through hole 317... Locking part 320... Holder 330... Spatial part M... Motor
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
Abstract
Description
最初に本開示の実施態様を列記して説明する。
本開示の端子台ユニットは、
(1)端子台と、前記端子台を内側に配置するケースと、を備える端子台ユニットであって、前記端子台は、バスバーと、前記バスバーとは別体の接続端子と、前記バスバーおよび前記接続端子を保持する本体と、を有し、前記ケースは、前記バスバーへのアクセスを可能にするアクセス孔を有し、前記アクセス孔を塞ぐカバーをさらに備え、前記カバーは、当該カバーの内側に配置されるコネクタを有し、前記コネクタは、前記接続端子に電気的に接続される導電部材を有している。
上記構成によれば、コネクタがカバーの内側に配置されるため、ケースの内側にコネクタ全体を収容するスペースを確保する必要がない。その結果、ケースの省スペース化を図ることができ、ケースが大型化するのを抑制することができる。
また、コネクタがバスバーへのアクセスを可能にするアクセス孔に対応して配置されるため、ケースにコネクタに対応する専用の孔を設ける必要がなく、ケースの構造が複雑化するのを防止することができる。
上記構成によれば、本体を第1ケースに支持させた後、第2ケースを第1ケースに固定することができ、組み立て性の向上を図ることができる。
上記構成によれば、接続端子が第1端部から第2端部にかけて取付壁の開口部を貫通する方向に延びる形状になるため、接続端子の全長を短くすることができる。
上記構成によれば、コネクタがアクセス孔に挿通されると同時に、接続端子の第2端部が導電部材に接続可能となる。また、接続端子がL字形状であるため、例えば、接続端子の第1端部に接続される配線を、取付壁の壁面に沿う方向に配置させることができ、第1ケース内のスペースを有効に活用することができる。
上記構成によれば、第1ケースが第2ケースよりも大きくなる。仮に、大きな第1ケースにコネクタの挿通孔が形成されるとすると、鋳巣の発生を考慮して第1ケースが設計されるため、挿通孔の開口径が大きくなってしまう。
しかし、上記構成の場合、体格の小さい第2ケースに、コネクタの挿通孔になり得るアクセス孔が形成されているため、第1ケースに開口径の大きい挿通孔を形成する必要がない。結果として、第1ケースに体格の大きなコネクタやシール部材を取り付ける必要もなくなる。
コネクタがアクセス孔に挿通される際に、導電部材と接続部位の少なくとも一方が前後方向と交差する方向に変位して双方が電気的に接続可能な位置に容易に至ることができる。なお、接続端子側の接続部位は、導電部材に直接接続される接続端子そのものであっても良いし、接続端子と導電部材との間に介在する相手端子等の中継接続部位であっても良い。
上記構成によれば、導電部材が端子保持部とともに変位することができるので、変位許容部の許容範囲で、導電部材の変位態様を決めることができる。
上記構成によれば、接続端子側の接続部位が相手ハウジングとともに前後方向と交差する方向に変位することができるので、リテーナと本体との間において、接続端子側の接続部位の変位態様を決めることができる。
上記構成によれば、相手端子が前後方向と交差する方向に変位するときに、可撓電線が変形することができるので、相手端子の変位に起因する応力が接続端子に及ぶのを抑制することができる。
上記構成によれば、コネクタがアクセス孔に挿通されると同時に、接続端子側の接続部位と導電部材を接続可能な状態にすることができる。その結果、コネクタをアクセス孔に挿通させる作業と、接続端子側の接続部位と導通部材とを接続させる作業とを個別に行わずに済み、組み立て性の向上を図ることができる。
本開示の実施形態の具体例を、以下に図面を参照しつつ説明する。なお、本発明はこの例示に限定されるものではなく、請求の範囲によって示され、請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。
本実施形態の実施例1は、電気自動車やハイブリッド自動車等の車両に搭載される端子台ユニット10を例示する。図2に示すように、端子台ユニット10は、ケース20,21と、ケース20,21内に配置される端子台60と、ケース20,21に装着されるカバー50と、カバー50の内側に配置されるコネクタ30と、を備えている。ケース20,21は、モータMを収容するモータケースとしての第1ケース20と、図示しないインバータを収容するインバータケースとしての第2ケース21と、を有している。第1ケース20内には、ATF(Automatic Transmission Fluid)オイル等の作動油が貯留されている。端子台60は、モータMとインバータとの接続を行うものであって、図1に示すように、電力供給用のバスバー61と、バスバー61とは別体の接続端子62と、を有している。接続端子62としては、モータMのコイル温度を検出する温度検出用のサーミスタ端子を例示することができる。
第1ケース20は、アルミニウム合金等の金属製であって、左右両端を閉じた筒状または箱状に形成されている。図1および図2に示すように、第1ケース20には、モータMとモータMから延びる配線75とを収容する第1収容空間22が設けられている。第1ケース20は、上部に、取付壁23を有している。取付壁23には、開口部24が設けられている。開口部24は、取付壁23の厚さ方向である上下方向に延び、上端が第2ケース21の後述する第2収容空間26に連通し、下端が第1ケース20の第1収容空間22に連通している。
端子台60は、バスバー61と接続端子62を保持する合成樹脂製の本体63を有している。本体63は、開口部24を貫通した状態で、取付壁23に取り付けられて支持される。本体63は、取付壁23の上面に固定される鍔部64を有している。図4に示すように、鍔部64の下面には、環状溝65が設けられている。環状溝65には、シールリング66が装着される。シールリング66は、本体63の鍔部64と取付壁23との間をシールする。
第2ケース21は、アルミニウム合金等の金属製であって、下面が開口する箱状に形成されている。第2ケース21は、第1ケース20よりも小さな外形を有している。言い換えれば、第2ケース21の体格は、第1ケース20の体格よりも小さくされている。図1および図2に示すように、第2ケース21には、中継コネクタ部70、電子機器25および相手側バスバーを収容する第2収容空間26が設けられている。第2ケース21は、第1ケース20の取付壁23に載せられ、図示しない締結部材を介して第1ケース20に締結されて固定される。端子台60は、第2ケース21によって上部が覆われる。電子機器25は、第2ケース21の上壁に取り付けられている。
カバー50は、アルミニウム合金等の金属製であって板状をなし、アクセス孔27を塞いだ状態で、第1ケース20と第2ケース21にまたがって固定される。図3に示すように、カバー50は、上下方向および左右方向に沿って配置されるカバー本体51と、カバー本体51の外周から後方に突出する張出部52と、を有している。カバー本体51の中心には、通し孔53が設けられている。
コネクタ30は、カバー50の通し孔53に前後方向に貫通して配置される。コネクタ30は、合成樹脂製のハウジング31と、ハウジング31に保持される金属製の導電部材40と、有している。
端子台ユニット10の組み立てに際し、第1ハウジング74が第1嵌合部73に嵌合され、接続端子62の第1端部69が第1端子76に接続される。バスバー61の下部にはモータM側の導体が接続される。また、第2ハウジング78が第2嵌合部77に嵌合され、接続端子62の第2端部68が第2端子80に接続される。相手端子86を収容した相手ハウジング84はリテーナ83とハウジング保持部82との間に保持される。第2端子80と相手端子86は可撓電線79を介してつながっているので、上記工程により、モータM側から接続端子62を介して相手端子86に至る導電径路が形成される。端子台60の本体63は開口部24を貫通した状態で取付壁23に取り付けられる。
本実施形態の実施例2に係る端子台ユニット10Aは、図5に示すように、端子台60Aの本体63A、接続端子62A、導電部材40Aを含むコネクタ30Aの各構造が実施例1とは異なる。その他は、実施例1と同様の構造である。
実施例2において、実施例1と同一または相当する構造には同一符号を付し、重複する説明を省略する。
今回開示された上記実施形態はすべての点で例示であって制限的なものではないと考えるべきである。
上記実施形態の場合、バスバーと接続端子は一つの本体に設けられていた。しかし、バスバーと接続端子は複数の本体に設けられていても良い。
上記実施形態の場合、カバーは、コネクタから分離されていた。しかし、カバーは、コネクタを一体に保持する構造であっても良い。
上記実施形態の場合、カバーとコネクタとの間に双方をシールする部材が設けられていなかった。しかし、カバーとコネクタの間に双方をシールする部材が設けられていても良い。
上記実施形態の場合、接続端子は、ピン状または板状に延びるサーミスタ端子を例示していた。しかし、接続端子は、サーミスタ端子に限らず、他のセンサ端子、信号端子であっても良い。また、接続端子は、バレルを有する圧着端子やバスバー形状のものであっても良い。
上記実施形態の場合、ケースは、モータケースとしての第1ケースとインバータケースとしての第2ケースとを例示していた。しかし、ケースは、他の電子機器などの機器を収容するケースであっても良い。また、ケースは、第1ケースと第2ケースとに分離不能な一体型であっても良い。
上記実施形態の実施例2の場合、端子保持部とハウジングとの間に変位許容部が設けられていた。しかし、端子保持部とハウジングとの間には単なるスペースが形成されているだけでも良い。
上記実施形態の実施例2における変位許容部に関する技術は、実施例1のコネクタにも適用可能である。
20…第1ケース(ケース)
21…第2ケース(ケース)
22…第1収容空間
23…取付壁
24…開口部
25…電子機器
26…第2収容空間
27…アクセス孔
28…フランジ部
30,30A…コネクタ
31,31A…ハウジング
32…前側嵌合部
33…後側嵌合部
34,34A…周面部
35…溝部
36,36A…弾性部材
37…端部ハウジング
38…係止部材
39,39A…誘い込み部
40,40A…導電部材
41…接続本体部
50…カバー
51…カバー本体
52…張出部
53…通し孔
60,60A…端子台
61…バスバー
62,62A…接続端子
63,63A…本体
64…鍔部
65…環状溝
66…シールリング
67…固定孔
68,68A…第2端部
69…第1端部
70…中継コネクタ部
71…1次モールド部
72…2次モールド部
73…第1嵌合部
74…第1ハウジング
75…配線
77,77A…第2嵌合部
78…第2ハウジング
79…可撓電線
81…壁部
82…ハウジング保持部
83…リテーナ
84…相手ハウジング
85…変位許容空間
86…相手端子(実施例1における接続端子側の接続部位)
90…端部端子
91,91A…電線
92,92A…ゴム栓
311…端子保持部
312…変位許容部
313…端子収容室
314…収容凹部
315…筒部
316…貫通孔
317…ロック部
320…ホルダ
330…空間部
M…モータ
Claims (11)
- 端子台と、
前記端子台を内側に配置するケースと、を備える端子台ユニットであって、
前記端子台は、バスバーと、前記バスバーとは別体の接続端子と、前記バスバーおよび前記接続端子を保持する本体と、を有し、
前記ケースは、前記バスバーへのアクセスを可能にするアクセス孔を有し、
前記アクセス孔を塞ぐカバーをさらに備え、
前記カバーは、当該カバーの内側に配置されるコネクタを有し、
前記コネクタは、前記接続端子に電気的に接続される導電部材を有している端子台ユニット。 - 前記ケースは、前記本体を支持する第1ケースと、前記アクセス孔が形成された第2ケースと、を有し、
前記第2ケースは、前記本体を覆いつつ前記第1ケースに固定されている請求項1に記載の端子台ユニット。 - 前記第1ケースは、前記第2ケースを固定する取付壁に開口部を有し、
前記本体は、前記開口部を貫通して配置され、
前記接続端子は、前記第1ケース内に収容された配線に接続される第1端部と、前記導電部材に電気的に接続される第2端部と、を有している請求項2に記載の端子台ユニット。 - 前記接続端子は、前記本体を貫通するL字形状であり、
前記第2端部は、前記本体から露出しつつ前記アクセス孔に対向して配置されている請求項3に記載の端子台ユニット。 - 前記第2ケースは、前記第1ケースよりも小さな外形を有している請求項2から請求項4のいずれか一項に記載の端子台ユニット。
- 前記コネクタは、前記アクセス孔を前後方向に貫通して配置され、
前記導電部材は、前記接続端子側の接続部位に前記前後方向に沿って接続され、
前記導電部材と前記接続端子側の接続部位の少なくとも一方は、前記前後方向と交差する方向に変位可能に配置されている請求項1から請求項5のいずれか一項に記載の端子台ユニット。 - 前記ケースにおける前記アクセス孔の内周と前記コネクタとの間に、前記前後方向と交差する方向に弾性変形可能な弾性部材が配置されている請求項6に記載の端子台ユニット。
- 前記コネクタは、
前記導電部材を保持する端子保持部と、
前記端子保持部を内側に配置するハウジングと、
前記端子保持部と前記ハウジングとの間に設けられ、前記端子保持部が前記前後方向と交差する方向に変位するのを許容する変位許容部と、を有している請求項6または請求項7に記載の端子台ユニット。 - 前記接続端子側の接続部位は、前記コネクタの嵌合相手である相手ハウジングに収容され、
前記本体には、前記相手ハウジングを前記前後方向と交差する方向に変位可能に保持するリテーナが装着されている請求項6から請求項8のいずれか一項に記載の端子台ユニット。 - 前記接続端子側の接続部位は、前記相手ハウジングに収容される相手端子であり、
前記相手端子は、前記接続端子に対して可撓電線を介して接続されている請求項9に記載の端子台ユニット。 - 前記導電部材に対する前記接続端子側の接続部位は、前記アクセス孔に対向して配置されている請求項1から請求項10のいずれか一項に記載の端子台ユニット。
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US20240222887A1 (en) | 2024-07-04 |
JP2022176604A (ja) | 2022-11-30 |
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