JP2012160286A - Terminal block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal block capable of reliably holding a current sensor at a predetermined position.SOLUTION: A terminal block 1 comprises: a terminal mounting part 3 for mounting a bus bar terminal together with a terminal to be connected so that they are connected to each other; and a sensor fixing part 2 for fixing a current sensor which detects a current flowing through the bus bar terminal. The sensor fixing part 2 includes: a base 21; a pair of elastic engagement standing pieces 22 which are provided to stand in the same direction from the base 21 so as to face each other, and which are elastically deformed to engage with the current sensor arranged between them; and backup ribs 23 which are provided to stand in a standing direction X from the base 21 on both sides in a width direction Z of the elastic engagement standing pieces 22 and at a position overlapping the current sensor in an arrangement direction Y. The backup ribs 23 are formed at positions which do not interfere with the current sensor when the elastic engagement standing pieces 22 are engaged with the current sensor.

Description

  The present invention relates to a terminal block for mounting at least a pair of terminals to be connected to each other, and to a terminal block including a sensor fixing portion for fixing a current sensor.

  There is a terminal block for mounting and fixing these terminals, such as terminals of electronic parts and terminals of electric wiring, by connecting the terminals with fastening members such as bolts (Patent Document 1). The main body of the terminal block is made of an insulating member such as resin, and is formed in an appropriate shape according to the shape of the terminal.

JP 2009-266519 A

  In such a terminal block, it may be desired to attach a current sensor for detecting the current flowing through the terminal. In this case, it is conceivable to form a terminal block by integrating a terminal mounting portion for mounting at least a pair of terminals and connecting them together with a sensor fixing portion for fixing the current sensor. . And the sensor fixing | fixed part requires the structure with easy attachment, such as a snap fit.

  However, when the sensor fixing part is formed in a part of the terminal block made of the resin molded body, it is difficult to ensure the strength. As a result, if the current sensor is assembled in a state where there is a deviation in the insertion direction with respect to the sensor fixing part, the sensor fixing part may be greatly deformed and the sensor fixing part may be damaged. Even after the current sensor is assembled, it is conceivable that a load is applied to the sensor fixing portion due to vibration or the like, causing damage. In such a case, the current sensor falls off the sensor fixing part. In this case, for example, the current sensor may be damaged, such as disconnection, or may interfere with surrounding parts and cause a failure. Also, particularly when a large current flows through the terminal, the current sensor may be too close to the terminal, causing a problem due to the influence of the heat.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a terminal block that can reliably hold a current sensor at a predetermined position.

The present invention provides a terminal mounting portion for mounting a bus bar terminal together with a connected terminal and connecting the two, and a current sensor formed integrally with the terminal mounting portion and detecting a current flowing through the bus bar terminal. A terminal block having a sensor fixing part for fixing
The sensor fixing portion is erected in a state of facing the base portion and the base portion in the same direction from each other, and is elastically deformed and engaged with the current sensor disposed therebetween. And on both sides of the elastic engagement standing piece in the width direction, which is a direction orthogonal to the arrangement direction and the standing direction of the pair of elastic engagement standing pieces, at a position overlapping the current sensor in the arrangement direction. A backup rib standing in the standing direction from the base portion,
The backup rib is in the terminal block, which is formed at a position where it does not interfere with the current sensor when the elastic engagement standing piece is engaged with the current sensor.

  Since the terminal block includes the sensor fixing portion, the current sensor can be held. Thereby, the relative position of the current sensor with respect to the bus bar terminal can be accurately determined. Moreover, since it is not necessary to provide a member for fixing the current sensor separately, the number of parts can be reduced.

  Moreover, since the sensor fixing portion includes a pair of elastic engagement standing pieces, the current sensor can be easily fixed without using a separate fixing member or the like. The sensor fixing portion includes the backup rib. Thereby, when inserting a current sensor in a sensor fixing | fixed part, damage to the said elastic engagement standing piece can be prevented. That is, when an attempt is made to assemble the current sensor in a state where there is a deviation in the insertion direction with respect to the sensor fixing portion, the current sensor comes into contact with the backup rib before the elastic engagement standing piece is greatly deformed. Thereby, at the time of the assembly of the current sensor, it is possible to prevent the elastic engagement standing piece from being greatly deformed and to prevent the breakage thereof.

  Further, even after the current sensor is assembled, it is conceivable that the elastic engagement standing piece is loaded and damaged by vibration or the like. Even in such a case, the presence of the backup rib can prevent the current sensor from falling off the sensor fixing portion. That is, even if the elastic engagement standing piece is damaged, the backup ribs are formed on the both sides in the width direction so as to overlap the current sensors in the arrangement direction. It can be fastened to the sensor fixing part. Thus, it is possible to prevent the current sensor from being damaged or causing interference due to interference with surrounding components. Further, it is possible to prevent the current sensor from being too close to the bus bar terminal and causing a malfunction due to the influence of the heat.

  As described above, according to the present invention, it is possible to provide a terminal block that can reliably hold a current sensor at a predetermined position.

The perspective view of the terminal block in Example 1. FIG. The A view of FIG. The front view of the sensor fixing | fixed part in Example 1. FIG. B view of FIG. The C view of FIG. D view of FIG. FIG. 4 is a schematic cross-sectional view taken along line EE in FIG. 3. FIG. 3 is a perspective view of a current sensor according to the first embodiment. The perspective view of the terminal block which attached the current sensor in Example 1. FIG. The front view of the sensor fixing | fixed part which attached the current sensor in Example 1. FIG. The fragmentary sectional view of the terminal block which attached the current sensor in Example 1. FIG. The top view seen from the capacitor | condenser side of the power converter device provided with the terminal block in Example 1. FIG. F view of FIG. The front view of the sensor fixing | fixed part which attached the current sensor and the bus-bar terminal in Example 1. FIG. The top view of the terminal block which attached the current sensor and bus-bar terminal in Example 1. FIG.

  The terminal block is preferably such that a plurality of pairs of the bus bar terminals and the connected terminals are fixed, but a pair of terminals may be fixed. Moreover, it is preferable that the said terminal block consists of a resin molding. The backup rib preferably has higher rigidity than the elastic engagement standing piece.

  Further, the elastic engagement standing piece may or may not be elastically deformed in a state where the current sensor is assembled to the sensor fixing portion. That is, in the state where the current sensor is assembled to the sensor fixing portion, the elastic engagement standing piece may be elastically deformed and urged inward, or the urging force is not applied. It may be. At least when the current sensor is assembled to the sensor fixing portion, the elastic engagement standing piece is configured to be elastically deformed.

  Moreover, it is preferable that the said current sensor is provided with the protrusion piece protruded toward the said backup rib. In this case, when the current sensor is to be inserted obliquely with respect to the sensor fixing portion, before the current sensor contacts the elastic engagement standing piece, or the current sensor greatly increases the elastic engagement standing piece. Before pushing and bending, the current sensor can be brought into contact with the backup rib in the protruding piece. As a result, it becomes easy to prevent excessive deformation of the elastic engagement standing piece, and it is possible to more effectively prevent the elastic engagement standing piece from being damaged. In addition, even when the elastic engagement standing piece is damaged after the current sensor is assembled to the sensor fixing portion, the protruding piece is formed on the current sensor, so that the gap between the current sensor and the backup rib can be reduced. The clearance can be reduced. Therefore, the position shift of the current sensor when the elastic engagement standing piece is damaged can be further reduced.

  Moreover, it is preferable that the said backup rib protrudes in the said standing direction rather than the said elastic engagement standing piece (Claim 3). In this case, when the current sensor is to be inserted in a position shifted or oblique state with respect to the sensor fixing portion, before the current sensor comes into contact with the elastic engagement standing piece, or the current sensor is elastic. The current sensor can easily come into contact with the backup rib before the engagement standing piece is largely pushed and bent. As a result, it becomes easy to prevent excessive deformation of the elastic engagement standing piece, and it is possible to more effectively prevent the elastic engagement standing piece from being damaged.

  Further, it is preferable that at least one of the backup ribs has a substantially L-shaped cross section perpendicular to the protruding direction. In this case, the rigidity of the backup rib employing this shape can be increased. It is also possible to function as positioning in the width direction of the current sensor. Further, when the elastic engagement standing piece is damaged after the current sensor is assembled, the current sensor can be prevented from moving in the width direction.

  Moreover, it is preferable that the said backup rib has a front-end | tip taper part which goes outside as it goes to a front end side at the inner surface in the front-end | tip part of the said protrusion direction. In this case, when the current sensor is assembled to the sensor fixing portion, the tip taper portion of the backup rib serves as a guide, and the assembling work can be performed smoothly.

  Moreover, it is preferable that the said sensor fixing | fixed part is provided with the support rib arrange | positioned facing the said current sensor from the said width direction (Claim 6). In this case, the movement of the current sensor in the width direction can be prevented when the elastic engagement standing piece is damaged after the current sensor is assembled.

  Preferably, the current sensor includes a sensor through hole that allows the bus bar terminal to pass therethrough, and a clearance is formed between an inner wall surface of the sensor through hole and the bus bar terminal. Item 7). In this case, it is very important to securely hold the current sensor at a predetermined position, and the effect obtained by providing the backup rib is sufficiently exhibited. That is, if the current sensor falls off from the sensor fixing portion of the terminal block, the clearance between the inner wall surface of the sensor through hole and the bus bar terminal is reduced or eliminated. As a result, the current sensor is affected by heat due to the current flowing through the bus bar terminal, and the current sensor may be damaged. Therefore, in the above configuration, it is particularly effective to provide the backup rib to prevent the current sensor from falling off.

  Moreover, it is preferable that the said base | substrate part is equipped with the base | substrate through-hole which penetrates the said bus-bar terminal (Claim 8). In this case, the structure which arrange | positions the current sensor provided with the said sensor through-hole in the said sensor fixing | fixed part can be formed easily.

  The bus bar terminal is a bus bar terminal through which a controlled current controlled by the power conversion device flows, and the terminal block preferably constitutes a part of the power conversion device. In this case, it is possible to prevent damage to the current sensor and surrounding components in the power conversion device. Since the amount of heat generated by the current flowing through the bus bar terminal is large, it is particularly effective to provide the backup rib to prevent the current sensor from falling off.

Example 1
A terminal block according to an embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, FIG. 9, and FIG. 15, the terminal block 1 of this example includes a terminal mounting portion 3 for mounting a bus bar terminal 55 together with a connected terminal (not shown) and connecting the two. A sensor fixing portion 2 is formed integrally with the terminal mounting portion 3 and fixes a current sensor 4 that detects a current flowing through the bus bar terminal 55.

  As shown in FIGS. 1 to 7, the sensor fixing portion 2 includes a base portion 21 and a pair of elastic engagement standing pieces 22 erected in a state facing each other in the same direction from the base portion 21. As shown in FIGS. 9 to 11, the pair of elastic engagement standing pieces 22 are elastically deformed and engaged with the current sensor 4 disposed therebetween.

As shown in FIGS. 1 to 7, the sensor fixing portion 2 further includes a backup rib 23 erected from the base portion 21 in the erection direction X of the elastic engagement piece 22. The backup rib 23 is on both sides of the elastic engagement standing piece 22 in the width direction Z which is a direction orthogonal to the arrangement direction Y and the standing direction X of the pair of elastic engagement standing pieces 22, and is shown in FIG. As shown, it is formed at a position overlapping the current sensor 4 in the alignment direction Y.
The backup rib 23 is formed at a position where it does not interfere with the current sensor 4 when the elastic engagement standing piece 22 is engaged with the current sensor 4.

  As shown in FIG. 3, the sensor fixing portion 2 has a substantially rectangular shape when viewed from the insertion side (the standing direction X side) of the current sensor 4, and the backup ribs 23 are arranged at the four corners thereof. . Two of the four backup ribs 23 have a substantially L-shaped cross section perpendicular to the protruding direction X. The four backup ribs 23 including the two backup ribs 23 are all more rigid than the elastic engagement standing piece 22.

As shown in FIGS. 6 and 7, the backup rib 23 protrudes in the standing direction X from the elastic engagement standing piece 22. The protrusion amount of the backup rib 23 with respect to the elastic engagement standing piece 22 in the standing direction X is, for example, about 1.5 to 2.9 mm.
The backup rib 23 has a tip tapered portion 233 that goes outward as it goes to the tip side on the inner surface of the tip portion in the protruding direction X.

  As shown in FIGS. 1 to 5, the sensor fixing portion 2 includes a support rib 24 that is disposed to face the current sensor 4 from the width direction Z. The support rib 24 is formed so as to protrude in the protruding direction X from the vicinity of one end edge in the width direction Z of the base portion 21. Two support ribs 24 are formed in a substantially plate shape, and are formed on substantially the same plane. A support surface 402 that is one surface in the width direction Z of the current sensor 4 is opposed to the support rib 24. The supported surface 402 and the support rib 24 may be in contact with each other, or a slight gap may be provided therebetween. Further, a tip tapered portion 241 is formed at the tip of the support rib 24 so as to go outward as it goes to the tip.

As shown in FIGS. 8 and 10, the current sensor 4 includes a protruding piece 41 protruding toward the backup rib 23. In other words, the current sensor 4 has a substantially rectangular parallelepiped shape, and a pair of projecting pieces 41 project from the engaged side surfaces 401 opposed to the elastic engagement standing piece 22. The protruding piece 41 is formed in the vicinity of both ends in the width direction Z of the engaged side surface 401. The protruding piece 41 protrudes from the engaged side surface 401 by, for example, 3.4 to 4.4 mm.
An engaged portion 42 that engages with the claw portion 221 of the elastic engagement standing piece 22 is formed on the engaged side surface 401 between the pair of protruding pieces 41. In this example, the engaged portion 42 protrudes from the engaged side surface 401, but the engaged portion can also be formed by being recessed with respect to the engaged side surface 401.

  The current sensor 4 includes a sensor through hole 43 through which the bus bar terminal 55 passes. Then, the current sensor 4 and the bus bar terminal 55 are arranged on the terminal block 1 and a clearance is formed between the inner wall surface of the sensor through hole 43 and the bus bar terminal 55 as shown in FIG. Two sensor through holes 43 are formed in parallel with both the engaged surface 401 and the supported surface 402, that is, in parallel with the protruding direction X.

  As shown in FIGS. 1 to 3, the base portion 21 of the sensor fixing portion 2 is located at a position facing the openings of the two sensor through holes 43 when the current sensor 4 is attached to the sensor fixing portion 2. The base body through-hole 211 is provided to allow the bus bar terminal 55 to pass therethrough. Therefore, two base through holes 211 are also formed. The two base body through holes 211 are formed in the arrangement direction Y between the pair of elastic engagement protrusions 22. Further, the terminal block 1 is a central through-hole penetrating in the same direction as the base body through-hole 211 at a position adjacent to the arrangement direction Y across the one elastic engagement standing piece 22 with respect to the sensor fixing portion 2. 12 is provided. The two base body through holes 211 and the one central through hole 12 are arranged in a substantially straight line in the arrangement direction Y.

  The pair of elastic engagement standing pieces 22 is formed in a substantially plate shape, and the normal line direction thereof substantially coincides with the alignment direction Y. The elastic engagement standing piece 22 has moderate flexibility in the plate thickness direction and can be elastically deformed. As shown in FIG. 7, a claw portion 221 that engages with the engaged portion 42 of the current sensor 4 is formed at the distal end portion in the protruding direction X of the elastic engagement standing piece 22.

  As shown in FIG. 3, the backup rib 23 (23 a) arranged adjacent to the support rib 24 side in the width direction Z with respect to the elastic engagement standing piece 22 has a substantially cross-sectional shape orthogonal to the protruding direction X. It has a rectangular shape. The inner side surface 234 is formed outside the inner side surface 224 of the elastic engagement standing piece 22 at a position retracted, for example, by about 1.1 to 1.3 mm.

Further, the backup rib 23 (23b) disposed adjacent to the elastic engagement standing piece 22 on the side opposite to the support rib 24 side in the width direction Z has a substantially L-shaped cross section perpendicular to the protruding direction X. It has a letter shape. The L-shape is constituted by a first piece 231 extending in the width direction Z and a second piece 232 extending in the arrangement direction Y. The first piece 231 extends inward in the width direction Z from the intersection with the second piece 232, and the second piece 232 extends inward in the alignment direction Y from the intersection with the first piece 231.
The inner side surface of the first piece 231 is formed on substantially the same plane as the inner side surface 234 of the backup rib 23a having a substantially rectangular cross section. Further, the inner side surface of the second piece 232 is disposed to face the side surface of the elastic engagement standing piece 22 in the width direction Z, and is slightly inward from the inner side surface 224 of the elastic engagement standing piece 22 in the arrangement direction Y. It has been extended.

  A space between the pair of backup ribs 23b arranged on the side opposite to the support rib 24 side is open, and in a state where the current sensor 4 is fixed to the sensor fixing portion 2, the current sensor 4 is opposite to the supported surface 402. A substantially entire surface of the top surface 404 is exposed from the sensor fixing portion 2. One end of the harness 44 of the current sensor 4 is provided on the top surface 404. However, the second piece 232 of the pair of backup ribs 23 faces the top surface 404 of the current sensor 4 at the end edge thereof. A connector 441 is provided at the other end of the harness 44.

  Further, the terminal block 1 includes a connector support portion 11 extending in an oblique direction that is a combination of the width direction Z and the alignment direction Y from the side opposite to the support rib 24 side of the base portion 21 of the sensor fixing portion 2. The connector support 11 is configured to fix the connector 441 of the harness 44 of the current sensor 4.

  The terminal block 1 is formed by integrally molding the sensor fixing portion 2, the connector support portion 11, and the terminal placement portion 3 configured as described above with resin. The terminal mounting portion 3 includes a portion on the opposite side of the protruding direction X of the elastic engagement standing piece 22 with respect to the sensor fixing portion 2 and a portion adjacent to the arrangement direction Y from that portion. And the bus-bar terminal 55 is mounted in the surface which faces the side (lower side in FIG. 1, FIG. 5) in which the support rib 24 is formed in the sensor fixing | fixed part 2 among the width directions Z in the terminal mounting part 3. FIG. A mounting surface is formed.

As shown in FIGS. 12 and 15, the terminal mounting portion 3 is configured such that five bus bar terminals 55 are mounted and can be connected to each other by overlapping with connected terminals (not shown). That is, as shown in FIG. 5, the terminal mounting portion 3 includes five terminal fixing portions 31, and a nut 311 is embedded in each terminal fixing portion 31.
The bus bar terminal 55 is a bus bar terminal through which a controlled current controlled by the power conversion device 5 shown in FIGS. 12 and 13 flows, and the terminal block 1 of this example constitutes a part of the power conversion device 5. It is.

  The power conversion device 5 is an inverter, converter, or the like that is mounted on an electric vehicle, a hybrid vehicle, or the like and performs conversion from power supply power to drive power for driving a drive motor, or vice versa. The power conversion device 5 includes a plurality of semiconductor modules 51 incorporating switching elements, a capacitor 52, a control circuit board 53, and the like. The main electrode terminals 511 of the plurality of semiconductor modules 51 are appropriately connected to each other by a plurality of bus bars. Some main electrode terminals 511 are connected to the capacitor 52 by bus bars.

A part (three) of the bus bars (55U, 55V, 55W) of the bus bars are placed on the terminal block 1 as external terminals and connected to the three electrodes of the drive motor. Connected to terminal.
A pair of bus bars also extend from the pair of electrodes of the capacitor 52, and the bus bar terminals 55 (55P, 55N) are also connected to connected terminals connected to the electrodes of the DC power supply as external terminals.

As shown in FIG. 15, the bus bar terminals 55P and 55N to be connected to the DC power supply are placed on the terminal placement portion 3 formed in the terminal block 1 at a position away from the sensor fixing portion 2 in the alignment direction Y. The
14 and 15, two of the three bus bars 55U, 55V, 55W to be connected to the drive motor (in this example, the bus bars 55V, 55W) are sensors of the current sensor 4. It passes through the through-hole 43 and the substrate through-hole 211 of the sensor fixing portion 2 and is placed on the terminal placement portion 3 existing behind the sensor fixing portion 2 (opposite to the protruding direction X). The other one (in this example, the bus bar terminal 55U) does not pass through the current sensor 4, passes through the central through hole 12 in the terminal block 1, and is placed on the terminal placement portion 3.

  Each bus bar terminal 55 and each connected terminal are provided with bolt insertion holes at positions corresponding to the nuts 311 provided in each terminal fixing portion 31. Then, the bus bar terminal 55 and the connected terminal are connected by inserting the bolt into the bolt insertion hole of the bus bar terminal 55 and the connected terminal that are overlapped with each other in the terminal fixing portion 31 and screwing into the nut 311. (Not shown).

  The power conversion device 5 is assembled by directly or indirectly fixing the semiconductor module 51, the capacitor 52, the control circuit board 53, the bus bar 55, etc. to the frame 54 made of metal such as aluminum. Yes. The terminal block 1 is also fixed to the frame 54 by bolts 56 using the two bolt insertion holes 13 provided in the terminal block 1.

  As shown in FIGS. 9 to 11, when attaching the current sensor 4 to the sensor fixing portion 2 of the terminal block 1, the penetration direction of the sensor through hole 43 is matched with the protruding direction X of the elastic engagement standing piece 22. At the same time, the normal direction of the engaged side surface 401 is aligned with the alignment direction Y. In this state, the current sensor 4 is inserted from the protruding direction X side toward the base portion 21. However, in actual work, it is difficult to accurately match the penetrating direction of the sensor through-hole 43 with the protruding direction X of the elastic engagement standing piece 22, and the two directions are usually roughly matched. is there.

  When the current sensor 4 is pushed into the sensor fixing portion 2, the pair of engaged portions 41 of the current sensor 4 ride over the claws 221 of the pair of elastic engagement standing pieces 22. When the current sensor 4 is fully pushed in, the elastic engagement standing piece 22 is restored, and the claw portion 221 is engaged with the pair of engaged portions 42 of the current sensor 4. As a result, the current sensor 4 is fixed to the sensor fixing portion 2. During this time, when the current sensors 4 are displaced or inclined in the alignment direction Y, the protruding pieces 41 of the current sensors 4 come into contact with the backup ribs 23, so that the elastic engagement standing pieces 22 are excessively deformed. Be blocked.

Further, the connector 441 of the current sensor 4 is fixed to the connector support portion 11 of the terminal block 1.
Thus, the terminal block 1 (FIG. 9) which fixed the current sensor 4 is attached to the main-body part of the power converter device 5 as shown in FIG. 12, FIG. Here, the terminal block 1 is brought closer to the main body of the power conversion device 5 from the side where the five bus bars in the power conversion device 5 protrude, with the side where the current sensor 4 is attached. Then, the bus bar terminals 55 (55V and 55W) are inserted through the sensor through hole 43 of the current sensor 4 and the base body through hole 211 of the terminal block 1, respectively. At the same time, another bus bar terminal 55 (55U) is inserted into the central through hole 12 of the terminal block 1.

As a result, as shown in FIGS. 12 and 15, the five bus bar terminals 55 are respectively arranged on the terminal fixing portions 31 of the terminal mounting portion 3 in the terminal block 1.
Next, the bolt insertion hole 13 of the terminal block 1 is used to fix the bolt to the frame 54 of the power converter 5.
Then, after completing the power converter 5, after mounting this in a vehicle with DC power supply (battery) and a drive motor, with respect to each bus-bar terminal 55 mounted in the terminal mounting part 3, Two connected terminals connected to the DC power source and three connected terminals connected to the drive motor are overlapped. Next, the bolts are inserted into the bolt insertion holes provided in these terminals and screwed into the nuts 311 in the terminal fixing portion 31, whereby both are fastened and fixed.

Next, the function and effect of this example will be described.
Since the terminal block 1 includes the sensor fixing portion 2, the current sensor 4 can be held. Thereby, the relative position of the current sensor 4 with respect to the bus bar terminal 55 can be accurately determined. In addition, since it is not necessary to provide a member for fixing the current sensor 4, it is possible to reduce the number of parts.

  Moreover, since the sensor fixing | fixed part 2 is provided with a pair of elastic engagement standing piece 22, the current sensor 4 can be easily fixed without using a separate fixing member or the like. The sensor fixing unit 2 includes a backup rib 23. Thereby, when inserting the current sensor 4 in the sensor fixing | fixed part 2, damage to the elastic engagement standing piece 22 can be prevented. That is, when the current sensor 4 is assembled in a state where there is a deviation in the insertion direction with respect to the sensor fixing portion 2, the current sensor 4 contacts the backup rib 23 before the elastic engagement standing piece 22 is greatly deformed. It will be. Thereby, at the time of the assembly | attachment of the current sensor 4, it can prevent that the elastic engagement standing piece 22 deform | transforms largely, and can prevent the damage.

  Further, even after the current sensor 4 is assembled, it is conceivable that the elastic engagement standing piece 22 is loaded and damaged by vibration or the like. Even in such a case, the presence of the backup rib 23 can prevent the current sensor 4 from falling off from the sensor fixing portion 2. That is, even if the elastic engagement standing piece 22 is broken, the backup ribs 23 are formed on the both sides in the width direction Z and overlapping the current sensor 4 in the arrangement direction Y. The current sensor 4 can be held on the sensor fixing portion 2 by the rib 23. As a result, it is possible to prevent the current sensor 4 from being damaged or causing interference due to interference with surrounding components. Moreover, it can prevent that the current sensor 4 approaches the bus-bar terminal 55 too much, and causes the malfunction by the influence of the heat.

  Further, the current sensor 4 includes a protruding piece 41 protruding toward the backup rib 23. Thus, when the current sensor 4 is to be inserted obliquely with respect to the sensor fixing portion 2, before the current sensor 4 comes into contact with the elastic engagement standing piece 22, or the current sensor 4 is elastically engaged standing piece. The current sensor 4 can be brought into contact with the backup rib 23 in the protruding piece 41 before the 22 is largely pushed and bent. As a result, excessive deformation of the elastic engagement standing piece 22 can be easily prevented, and damage to the elastic engagement standing piece 22 can be more effectively prevented. Further, even when the elastic engagement standing piece 22 is damaged after the current sensor 4 is assembled to the sensor fixing portion 2, the current sensor 4 and the backup are formed by forming the protruding piece 41 on the current sensor 4. The clearance between the ribs 23 can be reduced. Therefore, the positional deviation of the current sensor 4 when the elastic engagement standing piece 22 is damaged can be further reduced.

  The backup rib 23 protrudes in the standing direction X from the elastic engagement standing piece 22. As a result, when the current sensor 4 is displaced with respect to the sensor fixing portion 2 or when the current sensor 4 is to be inserted obliquely, before the current sensor 4 comes into contact with the elastic engagement standing piece 22 or the current sensor 4 is elastic. The current sensor 4 is likely to come into contact with the backup rib 23 before the engagement standing piece 22 is greatly pushed and bent. As a result, excessive deformation of the elastic engagement standing piece 22 can be easily prevented, and damage to the elastic engagement standing piece 22 can be more effectively prevented.

  Further, the backup rib 23b has a substantially L-shaped cross section orthogonal to the protruding direction X. Thereby, the rigidity of the backup rib 23b can be increased. It is also possible to function as positioning of the current sensor 4 in the width direction Z. Further, when the elastic engagement standing piece 22 is damaged after the current sensor 4 is assembled, the current sensor 4 can be prevented from moving in the width direction Z.

  Further, the backup rib 23 has a tip tapered portion 233. Thereby, when the current sensor 4 is assembled to the sensor fixing portion 2, the tip tapered portion 233 of the backup rib 23 serves as a guide, and the assembling work can be performed smoothly.

  In addition, the sensor fixing portion 2 includes a support rib 24. Thereby, the movement of the current sensor 4 in the width direction Z can be prevented when the elastic engagement standing piece 22 is damaged after the current sensor 4 is assembled.

  Further, the current sensor 4 includes a sensor through hole 43, and as shown in FIG. 14, a clearance is formed between the inner wall surface of the sensor through hole 43 and the bus bar terminal 55. Accordingly, it is very important to securely hold the current sensor 4 at a predetermined position, and the effect of providing the backup rib 23 is sufficiently exhibited. That is, if the current sensor 4 falls off from the sensor fixing part 2 of the terminal block 1, the clearance between the inner wall surface of the sensor through hole 43 and the bus bar terminal 55 is reduced or eliminated. Then, the current sensor 4 is affected by the heat caused by the current flowing through the bus bar terminal 55, and the current sensor 4 may be damaged. Therefore, in the above configuration, it is particularly effective to provide the backup rib 23 to prevent the current sensor 4 from falling off.

  Further, since the base portion 21 of the sensor fixing portion 2 includes the base through hole 211, a configuration in which the current sensor 4 including the sensor through hole 43 is disposed in the sensor fixing portion 2 can be easily formed.

  The bus bar terminal 55 is a bus bar terminal through which a controlled current controlled by the power converter 5 flows, and the terminal block 1 constitutes a part of the power converter 5. Thereby, damage to the current sensor 4 and surrounding components in the power conversion device 5 can be prevented. Since the amount of heat generated by the current flowing through the bus bar terminal 55 is large, it is particularly effective to provide the backup rib 23 to prevent the current sensor 4 from falling off.

  As described above, according to this example, it is possible to provide a terminal block that can reliably hold the current sensor at a predetermined position.

  Note that the terminal block of the present invention is not limited to the one used in the power conversion device as in the above-described embodiment, and may be one of various devices as long as it has a current sensor such as a battery charge / discharge current detection device. It can be used as a part.

DESCRIPTION OF SYMBOLS 1 Terminal block 2 Sensor fixing | fixed part 21 Base part 22 Elastic engagement standing piece 23 Backup rib 3 Terminal mounting part 4 Current sensor 5 Power converter 55 Bus-bar terminal X Standing direction Y Alignment direction Z Width direction

Claims (9)

A terminal mounting portion for mounting the bus bar terminal together with the connected terminal and connecting the two, and a current sensor that is formed integrally with the terminal mounting portion and detects the current flowing through the bus bar terminal. A terminal block having a sensor fixing part of
The sensor fixing portion is erected in a state of facing the base portion and the base portion in the same direction from each other, and is elastically deformed and engaged with the current sensor disposed therebetween. And on both sides of the elastic engagement standing piece in the width direction, which is a direction orthogonal to the arrangement direction and the standing direction of the pair of elastic engagement standing pieces, at a position overlapping the current sensor in the arrangement direction. A backup rib standing in the standing direction from the base portion,
The terminal block, wherein the backup rib is formed at a position that does not interfere with the current sensor in a state where the elastic engagement standing piece is engaged with the current sensor.   The terminal block according to claim 1, wherein the current sensor includes a protruding piece protruding toward the backup rib.   3. The terminal block according to claim 1, wherein the backup rib protrudes in the standing direction from the elastic engagement standing piece.   The terminal block according to any one of claims 1 to 3, wherein at least one of the backup ribs has a substantially L-shaped cross section perpendicular to the protruding direction. Terminal block.   The terminal block according to any one of claims 1 to 4, wherein the backup rib has a tip tapered portion that goes outward as it goes to the tip side on an inner surface of the tip portion in the protruding direction. Terminal block.   6. The terminal block according to claim 1, wherein the sensor fixing portion includes a support rib disposed so as to face the current sensor from the width direction. 7.   7. The terminal block according to claim 1, wherein the current sensor includes a sensor through hole that allows the bus bar terminal to pass therethrough, and is provided between an inner wall surface of the sensor through hole and the bus bar terminal. A terminal block characterized in that a clearance is formed.   The terminal block according to claim 7, wherein the base portion includes a base through hole that allows the bus bar terminal to pass therethrough.   The terminal block according to any one of claims 1 to 8, wherein the bus bar terminal is a terminal of a bus bar through which a controlled current controlled by a power conversion device flows, and the terminal block is a terminal of the power conversion device. Terminal block characterized by constituting a part.

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