WO2019216374A1 - Current sensor, and method for attaching current sensor - Google Patents

Current sensor, and method for attaching current sensor Download PDF

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Publication number
WO2019216374A1
WO2019216374A1 PCT/JP2019/018550 JP2019018550W WO2019216374A1 WO 2019216374 A1 WO2019216374 A1 WO 2019216374A1 JP 2019018550 W JP2019018550 W JP 2019018550W WO 2019216374 A1 WO2019216374 A1 WO 2019216374A1
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WO
WIPO (PCT)
Prior art keywords
current sensor
sensor
fixing
bus bar
base
Prior art date
Application number
PCT/JP2019/018550
Other languages
French (fr)
Japanese (ja)
Inventor
純一 吉田
Original Assignee
三菱重工サーマルシステムズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 三菱重工サーマルシステムズ株式会社 filed Critical 三菱重工サーマルシステムズ株式会社
Publication of WO2019216374A1 publication Critical patent/WO2019216374A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
    • H02B1/04—Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing

Definitions

  • the present invention relates to a current sensor and a method for mounting the current sensor.
  • Patent Document 1 describes that when a copper bus bar is connected to an output terminal of a control module such as a general-purpose inverter or high power switching, a current flowing through the bus bar is monitored by a through-type current sensor. . Furthermore, the current sensor described in Patent Document 1 can be attached to the control module.
  • Patent Document 1 By the way, in Patent Document 1 described above, after the current sensor is attached to the control module, a conductor such as a bus bar is passed through the current sensor and connected to the terminal of the control module.
  • the current sensor of Patent Document 1 includes a fixing screw on the outside in the width direction of a conductor such as a bus bar.
  • a fixing screw is disposed at a position overlapping the conductor such as a bus bar. May be. Therefore, after installing the current sensor, it is necessary to pass a conductor such as a bus bar through the current sensor.
  • the bus bar described above often passes a large current, it is preferable to lay it at the shortest distance from the viewpoint of preventing electric shock and reducing electrical resistance.
  • the current sensor described in Patent Document 1 is an arrangement of current sensors. Since it is necessary to form a conductor such as a bus bar based on the above, the shape of the conductor may be complicated.
  • the present invention has been made in view of the above circumstances, and provides a current sensor and a method of attaching the current sensor that can improve the degree of freedom of arrangement of components in the periphery and can suppress the complexity of the shape of the conductor.
  • the current sensor is a current sensor that is mounted on the mounting surface of the mounting object, and has a through hole, and a sensor body that can detect a current passing through the through hole. And a base portion having a mounting surface to which the sensor main body portion can be mounted, and a first fixing portion that detachably fixes the base portion to the mounting surface in a direction intersecting the mounting surface. .
  • the base portion on which the sensor main body portion is mounted can be attached to and detached from the mounting surface in a direction intersecting the mounting surface by the first fixing portion.
  • a base part can be made to approach in the direction which crosses an attachment surface, and a base part can be fixed to an attachment surface. Therefore, it is not necessary to secure a space for allowing the conductor to penetrate the through hole. Therefore, it is possible to improve the degree of freedom of arrangement of peripheral parts.
  • the sensor main body is mounted on the base, the degree of freedom of arrangement of the sensor main body relative to the base can be improved. Therefore, it is not necessary to make the conductor a shape according to the arrangement of the sensor main body, and it is possible to prevent the conductor shape from becoming complicated.
  • the first fixing portion according to the first aspect may hold the base portion at a position away from the mounting surface.
  • a space can be formed between the base portion and the mounting surface. Therefore, the space formed between the base portion and the mounting surface can be effectively used as a space for arranging wiring, components, and the like, for example.
  • the current sensor according to the first or second aspect may include a second fixing portion that detachably fixes the sensor main body portion to the base portion.
  • a sensor main-body part can be attached or detached with respect to a base part with a 2nd fixing
  • the current sensor according to any one of the first to third aspects may include a positioning part that positions a conductor that penetrates the through hole of the sensor main body part. .
  • a positioning part that positions a conductor that penetrates the through hole of the sensor main body part.
  • the first fixing portion according to any one of the first to fourth aspects is configured so that the sensor is viewed from a direction intersecting the mounting surface with respect to the base portion. You may make it fix in the position which does not overlap with the conductor which penetrates the through-hole of a main-body part.
  • fixed part to a base part can be performed easily.
  • the use of the tool is not hindered by the conductor, so that the tool can be used smoothly.
  • the current sensor mounting method includes a step of mounting the sensor main body portion having a through hole on the mounting surface of the base portion, and a conductor is passed through the through hole of the sensor main body portion. And a step of attaching the base portion to the attachment surface of the attachment object from a direction intersecting the attachment surface.
  • the current sensor and the current sensor mounting method it is possible to improve the degree of freedom of arrangement of components in the periphery and to suppress the complexity of the shape of the conductor.
  • a current sensor and a method for attaching the current sensor in the embodiment of the present invention will be described with reference to the drawings.
  • a current sensor used for the inverter control unit of the air conditioner will be described as an example of the current sensor, but the current sensor is not limited to that used for the inverter control unit of the air conditioner.
  • FIG. 1 is a side view showing the arrangement of current sensors in the first embodiment of the present invention.
  • FIG. 2 is a plan view showing the arrangement of the current sensors in the first embodiment of the present invention.
  • the current sensor 100 according to the first embodiment detects a current flowing through a bus bar 103 that is a conductor connecting the power module 101 and the terminal block 102.
  • the power module 101 is fixed to the sheet metal part 30 of the housing 20 that houses the inverter control part 10.
  • the power module 101 in the first embodiment is formed in a square block shape in plan view.
  • the power module 101 according to the first embodiment includes a terminal portion 101t at a position closest to the terminal block 102 on the surface 101a opposite to the sheet metal portion 30.
  • the terminal portion 101t can fix the first end portion 103A of the bus bar 103 with a first fastener 104 such as a screw.
  • the case where the first fastener 104 is a screw is illustrated.
  • the first end portion 103A becomes the terminal portion 101t.
  • the terminal portion 101t and the bus bar 103 are electrically connected to each other.
  • the first fastener 104 in this embodiment can be screwed into the terminal portion 101t from the direction Dh (more specifically, the upper side in FIG. 1) intersecting the sheet metal portion 30 to which the power module 101 is fixed. It has become.
  • the first fastener 104 is a screw and the bus bar 103 is fixed to the terminal portion 101t by the screw action of the first fastener 104 has been described.
  • the first fastener 104 is not limited to this configuration.
  • the first fastener 104 may have any configuration as long as the first end portion 103A of the bus bar 103 can be sandwiched and fixed to the terminal portion 101t.
  • the terminal block 102 is mounted on the substrate unit 105.
  • the terminal block 102 includes a terminal portion 102 t at the end opposite to the substrate portion 105.
  • the terminal portion 102t can fix the second end portion 103B of the bus bar 103 located on the opposite side to the first end portion 103A described above by a second fastener 106 such as a screw.
  • a wiring (not shown) connected to a load such as a compressor is electrically connected to the terminal portion 102t of the terminal block 102, and the bus bar 103 and a load such as the compressor are connected via this wiring. Electrically connected.
  • the terminal portion 102t of the terminal block 102 is located farther from the sheet metal portion 30 than the terminal portion 101t of the power module 101 described above in the direction Dh intersecting the sheet metal portion 30 (in other words, the vertical direction in FIG. 1). Is provided. Similar to the first fastener 104, the second fastener 106 in the first embodiment is a screw. Therefore, the second end portion 103B is inserted into the female screw portion of the terminal portion 102t by passing the male screw portion of the second fastener 106 through the mounting hole 103Bh formed in the second end portion 103B. The terminal portion 102t and the bus bar 103 are electrically connected by being fixed to 102t. Note that, like the first fastener 104, the second fastener 106 can be screwed into the terminal portion 102t from the direction Dh intersecting the sheet metal portion 30 (more specifically, the upper portion in FIG. 1). ing.
  • the substrate unit 105 is supported by the sheet metal unit 30 via a plurality of support members 107.
  • the support member 107 exemplified in the first embodiment holds the substrate unit 105 at a position away from the sheet metal unit 30 so that the substrate unit 105 does not contact the sheet metal unit 30.
  • the substrate portion 105 in the first embodiment is formed in a rectangular flat plate shape in plan view, and is held by the support member 107 in a posture substantially parallel to the sheet metal portion 30.
  • the support member 107 in this first embodiment is detachably fixed to the substrate unit 105 in the vicinity of the four corners of the substrate unit 105. Further, the support member 107 in the first embodiment has a claw or the like that is locked by being inserted into a hole formed in the sheet metal part 30 and the substrate part 105 and can be released by being removed. It is formed in a column shape having a locking mechanism at both ends. That is, the support member 107 in the first embodiment can be attached to and detached from the sheet metal part 30 and the substrate part 105 without using a tool.
  • the bus bar 103 is a conductor that electrically connects the terminal portion 101t and the terminal portion 102t described above.
  • the bus bar 103 is formed in a strip shape made of a metal such as copper having high conductivity.
  • the bus bar 103 in the first embodiment includes the first end portion 103A and the second end portion 103B, and is formed so that the width dimension W1 thereof is substantially constant. Further, the bus bar 103 in the first embodiment includes a parallel portion 103C and a vertical portion 103D between the above-described first end portion 103A and second end portion 103B.
  • the parallel part 103C extends so that the second end part 103B extends to the power module 101 side in a state where the bus bar 103 is connected to the terminal part 101t and the terminal part 102t.
  • the parallel part 103 ⁇ / b> C extends substantially parallel to the substrate part 105 and the sheet metal part 30.
  • the parallel part 103C in this 1st embodiment has reached the position between the board
  • the vertical portion 103D connects the end portion of the parallel portion 103C closer to the power module 101 and the terminal portion 101t.
  • the vertical portion 103D extends from the end of the parallel portion 103C on the side close to the power module 101 in the direction Dh intersecting the sheet metal portion 30 (in other words, perpendicular to the parallel portion 103C) and reaches the first end portion 103A.
  • the angle formed by the vertical portion 103D and the first end portion 103A exemplified in the first embodiment is vertical.
  • the first end portion 103A described above extends from the end portion of the vertical portion 103D on the side close to the sheet metal portion 30 to the power module 101 side in parallel with the sheet metal portion 30.
  • the bus bar 103 in the first embodiment has a first end portion 103A, a vertical portion 103D, a parallel portion 103C, and a second end portion 103B, and is formed in a crank shape in a side view.
  • the current sensor 100 detects the current flowing through the bus bar 103 in the parallel portion 103C.
  • the current sensor 100 includes a sensor main body part 110, a base part 111, and a first fixing part 112.
  • the sensor body 110 includes a sensor part 110A and a second fixing part 110B.
  • the sensor unit 110A is formed of a current transformer or the like having a through hole 110h.
  • This sensor part 110A is formed indivisible in the circumferential direction of the through hole 110h.
  • 110 A of sensor parts are the attitude
  • the axis a of the through hole 110h extends substantially parallel to the above-described sheet metal part 30 and the substrate part 105.
  • the direction in which the axis a extends is simply referred to as the axis direction Da.
  • the second fixing part 110B fixes the sensor part 110A to the base part 111.
  • the second fixing portion 110 ⁇ / b> B in the first embodiment is disposed between the bus bar 103 and the base portion 111 in a state where the mounting operation of the current sensor 100 is completed.
  • the second fixing portion 110B includes a protruding portion 110BA that protrudes from the sensor portion 110A in the axial direction Da of the through hole 110h, in other words, in the direction in which the power module 101 is disposed, and the protruding portion 110BA with respect to the base portion 111. And a fastener 110BB to be fixed.
  • the fastener 110BB penetrates the protruding portion 110BA from the direction Dh intersecting the sheet metal portion 30, and is detachably fixed to the base portion 111 by a screw action.
  • Two fasteners 110BB in the first embodiment are provided at intervals in a direction (hereinafter simply referred to as the width direction Dw) that intersects the axis a of the through hole 110h and is parallel to the sheet metal part 30 and the substrate part 105. It has been.
  • One of these two fasteners 110BB illustrates the case where it is arranged at a position overlapping the bus bar 103 when viewed from the direction Dh intersecting the sheet metal part 30.
  • the tool cannot be inserted into the fastener 110BB in a state where the bus bar 103 is inserted into the through hole 110h. Therefore, in a state where the bus bar 103 is inserted into the through hole 10h, the second fixing portion 110B cannot be attached to and detached from the base portion 111.
  • the base 111 has a mounting surface 111a to which the sensor main body 110 can be mounted.
  • the base portion 111 exemplified in the first embodiment is formed in a rectangular shape larger than the sensor main body portion 110 in plan view, and is formed in a flat plate shape extending in the width direction Dw and the axial direction Da. Further, the base portion 111 exemplified in the first embodiment is formed so as to protrude from the sensor main body portion 110 in the width direction Dw, and the first fixing portion 112 can be fixed to the protruding portion.
  • the first fixing portion 112 is in a direction intersecting the surface 105a (in other words, a direction Dh intersecting the sheet metal portion 30) with respect to the surface 105a (attachment surface) of the substrate portion 105 which is an attachment target to which the current sensor 100 is attached.
  • the base portion 111 is detachably fixed.
  • two first fixing portions 112 are provided, and the first fixing portions 112 removably support both sides of the base portion 111 in the width direction Dw. That is, the first fixing portion 112 is disposed at a position that does not overlap the bus bar 103 when viewed from the direction Dh that intersects the sheet metal portion 30.
  • first fixing portions 112 are also detachable from the substrate portion 105.
  • first fixing portion 112 a columnar member having locking mechanisms similar to those of the support member 107 described above at both ends can be used.
  • the base portion 111 can be attached to and detached from the first fixing portion 112 or the substrate portion 105 without using a tool.
  • the two first fixing portions 112 in the first embodiment are formed with the same length, and the posture of the base portion 111 fixed by the first fixing portion 112 is substantially parallel to the substrate portion 105. It has become an attitude.
  • FIG. 3 is a flowchart of the current sensor mounting method according to the first embodiment of the present invention.
  • FIG. 4 is a side view showing a process of inserting a bus bar into the sensor main body according to the first embodiment of the present invention.
  • FIG. 5 is a side view showing a process of fixing the current sensor to the substrate in the first embodiment of the present invention.
  • the sensor body 110 is mounted on the mounting surface 111a of the base 111 (step S01). Specifically, the sensor body 110 is fixed to the mounting surface 111a of the base 111 by the second fixing part 110B.
  • the bus bar 103 is passed through the through hole 110h of the sensor main body 110 (step S02). More specifically, the bus bar 103 is inserted into the through hole 110h from the second end portion 103B so that the sensor main body 110 is disposed at the position of the parallel portion 103C.
  • the base 111 is mounted on the surface 105a of the substrate 105 from the direction intersecting the surface 105a (in other words, the direction Dh intersecting the sheet metal part 30) (step S03). . Specifically, the base portion 111 of the current sensor 100 in a state where the bus bar 103 is penetrated is disposed so as to face the substrate portion 105, and the base portion 111 is placed with respect to the substrate portion 105 in the direction Dh intersecting the sheet metal portion 30. Move closer. Then, the base unit 111 is fixed to the substrate unit 105 by the first fixing unit 112.
  • the first fixing portion 112 may fix the other end portion to the substrate portion 105 after fixing one end portion to the base portion 111.
  • first end portion 103A and the second end portion 103B of the bus bar 103 are fixed to the terminal portions 101t and 102t by the fasteners 104 and 106 (not shown in FIG. 5), respectively.
  • the base portion 111 on which the sensor main body portion 110 is mounted is made to the surface 105a of the substrate portion 105 in a direction intersecting the surface 105a of the substrate portion 105 by the first fixing portion 112. Can be attached and detached.
  • the base portion 111 is moved closer to the surface 105 a of the substrate portion 105 in the direction intersecting the surface 105 a, so that the base portion 111 is moved to the surface 105 a of the substrate portion 105.
  • the degree of freedom in arranging the sensor main body 110 with respect to the base 111 can be improved.
  • the first fixing portion 112 holds the base portion 111 at a position away from the surface 105 a of the substrate portion 105. Therefore, a space can be formed between the base portion 111 and the surface 105 a of the substrate portion 105. As a result, the space formed between the base portion 111 and the surface 105a of the substrate portion 105 can be effectively used as a space for arranging wiring, components, and the like, for example.
  • the sensor main body 110 can be attached to and detached from the base 111 by providing the second fixing portion 110B. Therefore, the sensor main body 110 can be easily replaced.
  • the first fixing portion 112 is fixed to the base portion 111 at a position that does not overlap the bus bar 103 when viewed from the direction Dh intersecting the sheet metal portion 30. Therefore, when the first fixing portion 112 is fixed to the base portion 111, the visual field is not blocked by the bus bar 103, so that the operation of fixing the first fixing portion 112 to the base portion 111 can be easily performed.
  • FIG. 6 is a side view corresponding to FIG. 1 in the second embodiment of the present invention.
  • FIG. 7 is a plan view corresponding to FIG. 2 in the second embodiment of the present invention.
  • the current sensor 200 in the second embodiment is similar to the current sensor 100 of the first embodiment in the bus bar 103 that is a conductor connecting the power module 101 and the terminal block 102.
  • the flowing current is detected.
  • the substrate unit 205 is supported by the sheet metal unit 30 via a plurality of support members 107 in the same manner as the substrate unit 105 of the first embodiment described above. These support members 107 hold the substrate portion 205 at a position away from the sheet metal portion 30 so that the substrate portion 205 does not contact the sheet metal portion 30.
  • the substrate unit 205 is formed in a rectangular flat plate shape in plan view, and is held by the support member 107 in a posture substantially parallel to the sheet metal unit 30. .
  • the substrate unit 205 does not include an attachment surface to which the current sensor 200 is attached, unlike the substrate unit 105 of the first embodiment. Therefore, the substrate part 205 is formed to have a smaller dimension in the axial direction Da than the substrate part 205 of the first embodiment. Further, the substrate unit 205 is disposed away from the power module 101 in the axial direction Da so that the current sensor 200 can be disposed between the substrate unit 205 and the power module 101 in the axial direction Da.
  • the terminal block 102 in the second embodiment is mounted on the substrate unit 205. And the terminal part 102t of this terminal block 102 is from the terminal part 101t of the power module 101 mentioned above in the direction Dh (in other words, the up-down direction of FIG. 6) which cross
  • the bus bar 103 has the same configuration as that of the first embodiment, and is formed in a band shape having a constant width dimension W1 made of metal such as copper having high conductivity.
  • the bus bar 103 includes a first end portion 103A, a second end portion 103B, a parallel portion 103C, and a vertical portion 103D.
  • the current sensor 200 includes a sensor main body part 110, a base part 111, and a first fixing part 212.
  • the same sensor body 110 as that of the first embodiment can be used.
  • the sensor body 110 includes a sensor part 110A and a second fixing part 110B.
  • 110 A of sensor parts are the attitude
  • the second fixing part 110B fixes the sensor part 110A to the base part 111.
  • the second fixing portion 110 ⁇ / b> B is disposed between the bus bar 103 and the base portion 111 in the direction Dh intersecting the sheet metal portion 30 in a state where the mounting operation of the current sensor 200 is completed.
  • fixed part 110B is provided with protrusion 110BA and fastener 110BB similarly to 1st embodiment.
  • the fastener 110BB penetrates the protruding portion 110BA from the direction Dh intersecting the sheet metal portion 30, and is detachably fixed to the base portion 111 by a screw action.
  • two fasteners 110BB in the second embodiment are also provided at intervals in the width direction Dw.
  • One of these two fasteners 110BB is disposed at a position overlapping the bus bar 103 when viewed from the direction Dh intersecting the sheet metal part 30. That is, in the state where the bus bar 103 is inserted into the through hole 110h, the tool cannot be inserted into the fastener 110BB. Therefore, in a state where the bus bar 103 is inserted into the through hole 110h, the second fixing portion 110B cannot be detached from the base portion 111.
  • the base 111 has a mounting surface 111a to which the sensor main body 110 can be mounted.
  • the base portion 111 is formed so as to protrude from the sensor body 110 in the width direction Dw, and the first fixing portion 212 can be fixed to the protruding portion.
  • the first fixing part 212 removably fixes the base part 111 in the direction Dh intersecting the sheet metal part 30 with respect to the inner surface 30a (attachment surface) of the sheet metal part 30 as an attachment object to which the current sensor 200 is attached.
  • two first fixing portions 212 are provided, and these first fixing portions 212 are detachable on both sides of the base portion 111 in the width direction Dw. I support it. That is, the first fixing portion 212 is disposed at a position that does not overlap the bus bar 103 when viewed from the direction Dh that intersects the sheet metal portion 30.
  • first fixing portions 212 can also be attached to and detached from the sheet metal portion 30.
  • fixed part 212 the columnar member which has the latching mechanism similar to the 1st fixing
  • the base part 111 can be attached to and detached from the first fixing part 212 or the sheet metal part 30 without using a tool.
  • the two first fixing portions 212 exemplified in the second embodiment are formed with the same length, and the posture of the base portion 111 fixed by the first fixing portion 212 is substantially the same as that of the sheet metal portion 30. The posture is parallel to.
  • FIG. 8 is a flowchart corresponding to FIG. 3 in the second embodiment of the present invention.
  • FIG. 9 is a side view showing the attachment procedure of the current sensor in the second embodiment of the present invention.
  • the mounting method of the current sensor 200 in the second embodiment is different from the mounting method of the current sensor 100 of the first embodiment only in the mounting object.
  • the sensor main body 110 is mounted on the mounting surface 111a of the base 111 (step S01). Further, the bus bar 103 is passed through the through hole 110h of the sensor body 110 (step S02).
  • the base part 111 is mounted from the direction Dh intersecting the sheet metal part 30 on the inner surface 30a of the sheet metal part 30 between the power module 101 and the substrate part 205 in the axial direction Da (step S13). Specifically, the base portion 111 of the current sensor 200 in a state where the bus bar 103 is penetrated is disposed so as to face the sheet metal portion 30, and the base portion 111 is placed on the sheet metal portion 30 in a direction Dh that intersects the sheet metal portion 30. Approach. Then, the base portion 111 is fixed to the sheet metal portion 30 by the first fixing portion 212.
  • the first fixing part 212 may fix the other end to the sheet metal part 30 after fixing one end to the base part 111.
  • first end portion 103A and the second end portion 103B of the bus bar 103 are fixed to the terminal portions 101t and 102t by the fasteners 104 and 106 (not shown in FIG. 9), respectively.
  • the substrate unit 205 is configured as shown in FIG.
  • the size can be reduced from the size indicated by the alternate long and short dash line to the size indicated by the solid line.
  • FIG. 10 is a plan view of a current sensor in a first modification of the first and second embodiments of the present invention.
  • a positioning unit 301 that positions the bus bar 103 that passes through the through hole 110 h of the sensor main body 110 may be provided.
  • the positioning part 301 exemplified in the first modification is formed so as to protrude from the base part 111 in the direction Dh intersecting the sheet metal part 30.
  • the positioning portions 301 are respectively arranged on both sides of the sensor main body 110 in the axial direction Da. These positioning portions 301 can stabilize the position of the bus bar 103 before being fixed to the terminal portion 101t and the terminal portion 102t. Therefore, when attaching the current sensor 300 to the board part 105 or the sheet metal part 30, it is not necessary to suppress the bus bar 103 from dropping off from the current sensor 300, and the burden on the operator can be reduced.
  • the two positioning portions 301 in this first modification have a case where the protruding portions 302 protrude in the direction Dh intersecting the sheet metal portion 30 so as to sandwich both side portions of the bus bar 103 in the width direction Dw.
  • any configuration is possible as long as the bus bar 103 can be positioned.
  • the present invention is not limited to the configuration of each of the embodiments described above, and the design can be changed without departing from the gist thereof.
  • the shape of the bus bar 103 is not limited to the shape of the bus bar 103 in the above-described embodiment.
  • the conductor which penetrates the current sensors 100, 200 and 300 is not limited to the bus bar.
  • the second fixing portion 110B may be omitted, and the sensor main body portion 110 may be fixed to the base portion 111 by adhesion or solder so that it cannot be easily attached or detached.
  • the sensor main body portion 110 may be configured to be detachable from the base portion 111.
  • the first fixing that can be attached and detached without using a tool.
  • a locking mechanism similar to that of the portion 112 may be used, or other fasteners such as a hook-and-loop fastener and a double-sided tape may be used.
  • the mechanism that can be attached and detached by the first fixing portion 112 is not limited to the above-described locking mechanism.
  • it may be detachable using screw fasteners such as screws or bolts, or may be detachable using a hook-and-loop fastener or double-sided tape.
  • the first fixing portion 112 when a screw fastener such as a screw or a bolt is used in the first fixing portion 112, the first fixing portion 112 intersects the surface 105a of the substrate portion 105 (in other words, the direction intersecting the sheet metal portion 30). Dh) may be fixed to the base portion 111 at a position that does not overlap with the bus bar 103.
  • Dh may be fixed to the base portion 111 at a position that does not overlap with the bus bar 103.
  • the first fixing portion 112 may detachably fix the base portion 111 to the surface 105a in a state where the base portion 111 and the substrate portion 105 are in contact with each other.
  • the first fixing portion 212 may detachably fix the base portion 111 to the inner surface 30a in a state where the base portion 111 and the sheet metal portion 30 are in contact with each other.
  • the board part 105 and the sheet metal part 30 of the housing 20 are exemplified as the attachment object.
  • the attachment object is limited to the board part 105 and the sheet metal part 30 of the housing 20. I can't.
  • the current sensor and the current sensor mounting method it is possible to improve the degree of freedom of arrangement of components in the periphery and to suppress the complexity of the shape of the conductor.

Abstract

A current sensor (100) is mounted on an attachment surface (105a) of an attachment target object (105). The current sensor (100) is provided with a sensor main body portion (110) which has a through hole (110h) and which is capable of detecting a current penetrating through the through hole (110h), a base portion (111) having a mounting surface (111a) on which the sensor main body portion (110) can be mounted, and a first fixing portion (112) which fixes the base portion (111) detachably to the attachment surface (105a) in a direction intersecting the attachment surface (105a).

Description

電流センサー及び電流センサーの取り付け方法Current sensor and current sensor mounting method
　この発明は、電流センサー及び電流センサーの取り付け方法に関する。
　本願は、２０１８年５月１１日に日本に出願された特願２０１８－０９２３２２号について優先権を主張し、その内容をここに援用する。 The present invention relates to a current sensor and a method for mounting the current sensor.
This application claims priority on Japanese Patent Application No. 2018-092322 filed in Japan on May 11, 2018, the contents of which are incorporated herein by reference.
　例えば、空気調和機用のインバーター等を制御する制御モジュールにおいては、貫通型電流センサーにっよってブスバー等に流れる電流を監視している場合がある。
　特許文献１には、汎用インバーターや大電力スイッチング等の制御モジュールの出力端子に銅製のブスバーが接続された場合に、このブスバーに流れる電流を貫通型の電流センサーによって監視することが記載されている。さらに、特許文献１に記載の電流センサーは、制御モジュールに取り付け可能となっている。 For example, in a control module that controls an inverter or the like for an air conditioner, the current flowing through a bus bar or the like may be monitored by a through-type current sensor.
Patent Document 1 describes that when a copper bus bar is connected to an output terminal of a control module such as a general-purpose inverter or high power switching, a current flowing through the bus bar is monitored by a through-type current sensor. . Furthermore, the current sensor described in Patent Document 1 can be attached to the control module.
日本国特許第３１７３２２３号公報Japanese Patent No. 3173223
　ところで、上述した特許文献１においては、電流センサーを制御モジュールに取り付けた後に、ブスバー等の導体を電流センサーに貫通させて、制御モジュールの端子に接続している。また、特許文献１の電流センサーは、ブスバー等の導体の幅方向外側に固定用のビスを備えているが、汎用の電流センサーの場合、ブスバー等の導体と重なる位置に固定用のビスが配置される場合がある。そのため、電流センサーを設置した後に、ブスバー等の導体を電流センサーに貫通させる必要がある。上記のように電流センサーを設置した後に、ブスバー等の導体を貫通させようとすると、電流センサーの貫通孔の軸線方向、すなわちブスバー等の導体の長手方向に作業用のスペースを設ける必要が有り、電流センサーの周辺における部品の配置自由度が低下してしまうという課題がある。 By the way, in Patent Document 1 described above, after the current sensor is attached to the control module, a conductor such as a bus bar is passed through the current sensor and connected to the terminal of the control module. The current sensor of Patent Document 1 includes a fixing screw on the outside in the width direction of a conductor such as a bus bar. In the case of a general-purpose current sensor, a fixing screw is disposed at a position overlapping the conductor such as a bus bar. May be. Therefore, after installing the current sensor, it is necessary to pass a conductor such as a bus bar through the current sensor. After installing the current sensor as described above, when trying to penetrate a conductor such as a bus bar, it is necessary to provide a working space in the axial direction of the through hole of the current sensor, that is, in the longitudinal direction of the conductor such as the bus bar, There exists a subject that the arrangement | positioning freedom degree of components in the periphery of an electric current sensor will fall.
　さらに、上述したブスバーは、大電流を流す場合が多いため、感電防止や電気抵抗低減の観点から最短距離で敷設することが好ましい、しかしながら、特許文献１に記載の電流センサーは、電流センサーの配置を基準にしてブスバー等の導体を形成する必要があるため、導体の形状が複雑化してしまう可能性がある。 Furthermore, since the bus bar described above often passes a large current, it is preferable to lay it at the shortest distance from the viewpoint of preventing electric shock and reducing electrical resistance. However, the current sensor described in Patent Document 1 is an arrangement of current sensors. Since it is necessary to form a conductor such as a bus bar based on the above, the shape of the conductor may be complicated.
　この発明は、上記事情に鑑みてなされたものであり、周辺における部品の配置自由度を向上できるとともに、導体の形状が複雑化することを抑制できる電流センサー及び電流センサーの取り付け方法を提供する。 The present invention has been made in view of the above circumstances, and provides a current sensor and a method of attaching the current sensor that can improve the degree of freedom of arrangement of components in the periphery and can suppress the complexity of the shape of the conductor.
　上記の課題を解決するために以下の構成を採用する。
　この発明の第一態様によれば、電流センサーは、取付対象物の取付面に装着される電流センサーであって、貫通孔を有し、前記貫通孔を貫通する電流を検出可能なセンサー本体部と、前記センサー本体部を装着可能な装着面を有するベース部と、前記ベース部を、前記取付面に対して前記取付面と交差する方向に着脱可能に固定する第一固定部と、を備える。
　この第一態様では、センサー本体部を装着したベース部を、第一固定部によって取付面と交差する方向で、取付面に対して着脱することができる。これにより、センサー本体部に導体を貫通させた後に、ベース部を取付面に対して交差する方向に接近させて、ベース部を取付面に固定することができる。そのため、導体を貫通孔に貫通させるためのスペースを確保する必要が無い。したがって、周辺部品の配置自由度を向上できる。また、センサー本体部をベース部に装着するため、ベース部に対してセンサー本体部の配置自由度を向上できる。したがって、導体をセンサー本体部の配置に応じた形状にする必要が無くなり、導体の形状が複雑化することを抑制できる。 In order to solve the above problems, the following configuration is adopted.
According to the first aspect of the present invention, the current sensor is a current sensor that is mounted on the mounting surface of the mounting object, and has a through hole, and a sensor body that can detect a current passing through the through hole. And a base portion having a mounting surface to which the sensor main body portion can be mounted, and a first fixing portion that detachably fixes the base portion to the mounting surface in a direction intersecting the mounting surface. .
In the first aspect, the base portion on which the sensor main body portion is mounted can be attached to and detached from the mounting surface in a direction intersecting the mounting surface by the first fixing portion. Thereby, after letting a conductor penetrate a sensor main-body part, a base part can be made to approach in the direction which crosses an attachment surface, and a base part can be fixed to an attachment surface. Therefore, it is not necessary to secure a space for allowing the conductor to penetrate the through hole. Therefore, it is possible to improve the degree of freedom of arrangement of peripheral parts. Moreover, since the sensor main body is mounted on the base, the degree of freedom of arrangement of the sensor main body relative to the base can be improved. Therefore, it is not necessary to make the conductor a shape according to the arrangement of the sensor main body, and it is possible to prevent the conductor shape from becoming complicated.
　この発明の第二態様によれば、第一態様に係る第一固定部は、前記ベース部を前記取付面から離れた位置に保持するようにしても良い。
　このように構成することで、ベース部と取付面との間に空間を形成することができる。したがって、ベース部と取付面との間に形成される空間を、例えば、配線や部品等を配置する空間として有効利用することができる。 According to the second aspect of the present invention, the first fixing portion according to the first aspect may hold the base portion at a position away from the mounting surface.
With this configuration, a space can be formed between the base portion and the mounting surface. Therefore, the space formed between the base portion and the mounting surface can be effectively used as a space for arranging wiring, components, and the like, for example.
　この発明の第三態様によれば、第一又は二態様に係る電流センサーにおいて、前記ベース部に対して前記センサー本体部を着脱可能に固定する第二固定部を備えるようにしても良い。
　このように構成することで、第二固定部によってセンサー本体部をベース部に対して着脱することができる。したがって、センサー本体部を容易に交換することができる。 According to the third aspect of the present invention, the current sensor according to the first or second aspect may include a second fixing portion that detachably fixes the sensor main body portion to the base portion.
By comprising in this way, a sensor main-body part can be attached or detached with respect to a base part with a 2nd fixing | fixed part. Therefore, the sensor body can be easily replaced.
　この発明の第四態様によれば、第一から第三態様の何れか一つの態様に係る電流センサーにおいて、前記センサー本体部の貫通孔を貫通する導体を位置決めする位置決め部を備えていてもよい。
　このように構成することで、センサー本体部の貫通孔に貫通させた導体が変位することを抑制できる。したがって、センサー本体部の貫通孔に導体を貫通させた後に、ベース部を第一固定部によって取付面に取り付ける際に導体が脱落等することを抑制できる。 According to the fourth aspect of the present invention, the current sensor according to any one of the first to third aspects may include a positioning part that positions a conductor that penetrates the through hole of the sensor main body part. .
By comprising in this way, it can suppress that the conductor penetrated to the through-hole of the sensor main-body part is displaced. Accordingly, it is possible to prevent the conductor from dropping off when the base portion is attached to the attachment surface by the first fixing portion after the conductor is passed through the through hole of the sensor main body portion.
　この発明の第五態様によれば、第一から第四態様の何れか一つの態様に係る第一固定部は、前記ベース部に対して、前記取付面と交差する方向から見て、前記センサー本体部の貫通孔を貫通する導体と重ならない位置で固定されるようにしてもよい。
　このように構成することで、第一固定部をベース部に固定する際に、導体によって視界が遮られないため、第一固定部をベース部に固定する作業を容易に行うことができる。また例えば、第一固定部によるベース部の着脱作業に工具が必要な場合などに、工具の使用が導体によって妨げられないので、円滑に工具を使用することが可能になる。 According to a fifth aspect of the present invention, the first fixing portion according to any one of the first to fourth aspects is configured so that the sensor is viewed from a direction intersecting the mounting surface with respect to the base portion. You may make it fix in the position which does not overlap with the conductor which penetrates the through-hole of a main-body part.
By comprising in this way, when fixing a 1st fixing | fixed part to a base part, since a visual field is not obstruct | occluded by a conductor, the operation | work which fixes a 1st fixing | fixed part to a base part can be performed easily. In addition, for example, when a tool is required for the attachment / detachment work of the base portion by the first fixing portion, the use of the tool is not hindered by the conductor, so that the tool can be used smoothly.
　この発明の第六態様によれば、電流センサーの取り付け方法は、貫通孔を有したセンサー本体部を、ベース部の装着面に実装する工程と、前記センサー本体部の前記貫通孔に導体を貫通させる工程と、前記ベース部を、取付対象物の取付面に対して、前記取付面と交差する方向から装着する工程と、を含む。
　このように構成することで、電流センサーを導体と共に、取付面と交差する方向から、取付面に装着することができる。したがって、周辺における部品の配置自由度を向上できるとともに、導体の形状が複雑化することを抑制できる。 According to the sixth aspect of the present invention, the current sensor mounting method includes a step of mounting the sensor main body portion having a through hole on the mounting surface of the base portion, and a conductor is passed through the through hole of the sensor main body portion. And a step of attaching the base portion to the attachment surface of the attachment object from a direction intersecting the attachment surface.
By comprising in this way, a current sensor can be mounted | worn to a mounting surface from the direction which cross | intersects a mounting surface with a conductor. Therefore, it is possible to improve the degree of freedom of arrangement of components in the periphery and to suppress the complicated shape of the conductor.
　上記電流センサー及び電流センサーの取り付け方法によれば、周辺における部品の配置自由度を向上できるとともに、導体の形状が複雑化することを抑制できる。 According to the current sensor and the current sensor mounting method, it is possible to improve the degree of freedom of arrangement of components in the periphery and to suppress the complexity of the shape of the conductor.
この発明の第一実施形態における電流センサーの配置を示す側面図である。It is a side view which shows arrangement | positioning of the current sensor in 1st embodiment of this invention. この発明の第一実施形態における電流センサーの配置を示す平面図である。It is a top view which shows arrangement | positioning of the current sensor in 1st embodiment of this invention. この発明の第一実施形態における電流センサーの取付方法のフローチャートである。It is a flowchart of the attachment method of the current sensor in 1st embodiment of this invention. この発明の第一実施形態におけるセンサー本体部にブスバーを挿入する工程を示す側面図である。It is a side view which shows the process of inserting a bus bar in the sensor main-body part in 1st embodiment of this invention. この発明の第一実施形態における電流センサーを基板に固定する工程を示す側面図である。It is a side view which shows the process of fixing the current sensor in 1st embodiment of this invention to a board | substrate. この発明の第二実施形態における図１に相当する側面図である。It is a side view equivalent to FIG. 1 in 2nd embodiment of this invention. この発明の第二実施形態における図２に相当する平面図である。It is a top view equivalent to FIG. 2 in 2nd embodiment of this invention. この発明の第二実施形態における図３に相当するフローチャートである。It is a flowchart equivalent to FIG. 3 in 2nd embodiment of this invention. この発明の第二実施形態における電流センサーの取り付け手順を示す側面図である。It is a side view which shows the attachment procedure of the current sensor in 2nd embodiment of this invention. この発明の第一、第二実施形態の第一変形例における電流センサーの平面図である。It is a top view of the current sensor in the first modification of the first and second embodiments of the present invention.
　次に、この発明の実施形態における電流センサー及び電流センサーの取り付け方法を図面に基づき説明する。この実施形態においては、電流センサーとして、空気調和機のインバーター制御部に用いる電流センサーを一例に説明するが、電流センサーは、空気調和機のインバーター制御部に用いるものに限られない。 Next, a current sensor and a method for attaching the current sensor in the embodiment of the present invention will be described with reference to the drawings. In this embodiment, a current sensor used for the inverter control unit of the air conditioner will be described as an example of the current sensor, but the current sensor is not limited to that used for the inverter control unit of the air conditioner.
（第一実施形態）
　図１は、この発明の第一実施形態における電流センサーの配置を示す側面図である。図２は、この発明の第一実施形態における電流センサーの配置を示す平面図である。
　図１、図２に示すように、この第一実施形態における電流センサー１００は、パワーモジュール１０１と、端子台１０２とを繋ぐ導体であるブスバー１０３に流れる電流を検出する。 (First embodiment)
FIG. 1 is a side view showing the arrangement of current sensors in the first embodiment of the present invention. FIG. 2 is a plan view showing the arrangement of the current sensors in the first embodiment of the present invention.
As shown in FIGS. 1 and 2, the current sensor 100 according to the first embodiment detects a current flowing through a bus bar 103 that is a conductor connecting the power module 101 and the terminal block 102.
　パワーモジュール１０１は、インバーター制御部１０を収容する筐体２０の板金部３０に固定されている。この第一実施形態におけるパワーモジュール１０１は、平面視で四角形のブロック状に形成されている。この第一実施形態におけるパワーモジュール１０１は、板金部３０とは反対側の面１０１ａの最も端子台１０２に近い位置に端子部１０１ｔを備えている。この端子部１０１ｔは、ブスバー１０３の第一端部１０３Ａをビス等の第一留め具１０４により固定可能となっている。 The power module 101 is fixed to the sheet metal part 30 of the housing 20 that houses the inverter control part 10. The power module 101 in the first embodiment is formed in a square block shape in plan view. The power module 101 according to the first embodiment includes a terminal portion 101t at a position closest to the terminal block 102 on the surface 101a opposite to the sheet metal portion 30. The terminal portion 101t can fix the first end portion 103A of the bus bar 103 with a first fastener 104 such as a screw.
　この第一実施形態においては、第一留め具１０４がビスである場合を例示している。この第一留め具１０４の雄ネジ部を、第一端部１０３Ａに形成された取付孔１０３Ａｈに貫通させて、端子部１０１ｔの雌ネジ部にねじ込むことで、第一端部１０３Ａが端子部１０１ｔに固定されて端子部１０１ｔとブスバー１０３とが電気的に接続される。この実施形態における第一留め具１０４は、パワーモジュール１０１が固定されている板金部３０と交差する方向Ｄｈ（より具体的には、図１における上方）から端子部１０１ｔにねじ込むことができるようになっている。 In the first embodiment, the case where the first fastener 104 is a screw is illustrated. By passing the male screw portion of the first fastener 104 through the mounting hole 103Ah formed in the first end portion 103A and screwing it into the female screw portion of the terminal portion 101t, the first end portion 103A becomes the terminal portion 101t. The terminal portion 101t and the bus bar 103 are electrically connected to each other. The first fastener 104 in this embodiment can be screwed into the terminal portion 101t from the direction Dh (more specifically, the upper side in FIG. 1) intersecting the sheet metal portion 30 to which the power module 101 is fixed. It has become.
　第一実施形態では、第一留め具１０４がビスであり、この第一留め具１０４のネジ作用によりブスバー１０３を端子部１０１ｔに固定する場合について説明した。しかし、第一留め具１０４は、この構成に限られない。第一留め具１０４は、端子部１０１ｔに対してブスバー１０３の第一端部１０３Ａを挟み込んで固定可能な構成であれば如何なる構成であっても良い。 In the first embodiment, the case where the first fastener 104 is a screw and the bus bar 103 is fixed to the terminal portion 101t by the screw action of the first fastener 104 has been described. However, the first fastener 104 is not limited to this configuration. The first fastener 104 may have any configuration as long as the first end portion 103A of the bus bar 103 can be sandwiched and fixed to the terminal portion 101t.
　端子台１０２は、基板部１０５上に装着されている。この端子台１０２は、基板部１０５とは反対側の端部に端子部１０２ｔを備えている。この端子部１０２ｔは、上述した第一端部１０３Ａとは反対側に位置するブスバー１０３の第二端部１０３Ｂをビス等の第二留め具１０６により固定可能になっている。なお、端子台１０２の端子部１０２ｔには、コンプレッサ等の負荷に接続される配線（図示せず）が電気的に接続されており、この配線を介して、ブスバー１０３とコンプレッサ等の負荷とが電気的に接続される。 The terminal block 102 is mounted on the substrate unit 105. The terminal block 102 includes a terminal portion 102 t at the end opposite to the substrate portion 105. The terminal portion 102t can fix the second end portion 103B of the bus bar 103 located on the opposite side to the first end portion 103A described above by a second fastener 106 such as a screw. Note that a wiring (not shown) connected to a load such as a compressor is electrically connected to the terminal portion 102t of the terminal block 102, and the bus bar 103 and a load such as the compressor are connected via this wiring. Electrically connected.
　この端子台１０２の端子部１０２ｔは、板金部３０と交差する方向Ｄｈ（言い換えれば、図１の上下方向）で、上述したパワーモジュール１０１の端子部１０１ｔよりも、板金部３０から離れた位置に設けられている。この第一実施形態における第二留め具１０６は、第一留め具１０４と同様に、ビスである。そのため、第二留め具１０６の雄ネジ部を、第二端部１０３Ｂに形成された取付孔１０３Ｂｈに貫通させて、端子部１０２ｔの雌ネジ部にねじ込むことで、第二端部１０３Ｂが端子部１０２ｔに固定されて端子部１０２ｔとブスバー１０３とが電気的に接続される。なお、第二留め具１０６は、第一留め具１０４と同様に、板金部３０と交差する方向Ｄｈ（より具体的には、図１における上方）から端子部１０２ｔにねじ込むことができるようになっている。 The terminal portion 102t of the terminal block 102 is located farther from the sheet metal portion 30 than the terminal portion 101t of the power module 101 described above in the direction Dh intersecting the sheet metal portion 30 (in other words, the vertical direction in FIG. 1). Is provided. Similar to the first fastener 104, the second fastener 106 in the first embodiment is a screw. Therefore, the second end portion 103B is inserted into the female screw portion of the terminal portion 102t by passing the male screw portion of the second fastener 106 through the mounting hole 103Bh formed in the second end portion 103B. The terminal portion 102t and the bus bar 103 are electrically connected by being fixed to 102t. Note that, like the first fastener 104, the second fastener 106 can be screwed into the terminal portion 102t from the direction Dh intersecting the sheet metal portion 30 (more specifically, the upper portion in FIG. 1). ing.
　基板部１０５は、複数の支持部材１０７を介して板金部３０に支持されている。この第一実施形態で例示する支持部材１０７は、基板部１０５が板金部３０と接触しないように、基板部１０５を板金部３０から離れた位置で保持している。この第一実施形態における基板部１０５は、平面視で四角形の平板状に形成され、板金部３０に対して実質的に平行な姿勢で支持部材１０７によって保持されている。 The substrate unit 105 is supported by the sheet metal unit 30 via a plurality of support members 107. The support member 107 exemplified in the first embodiment holds the substrate unit 105 at a position away from the sheet metal unit 30 so that the substrate unit 105 does not contact the sheet metal unit 30. The substrate portion 105 in the first embodiment is formed in a rectangular flat plate shape in plan view, and is held by the support member 107 in a posture substantially parallel to the sheet metal portion 30.
　この第一実施形態における支持部材１０７は、基板部１０５の四つの角部の近傍で基板部１０５に対して着脱可能に固定されている。また、この第一実施形態における支持部材１０７は、板金部３０及び基板部１０５に形成された孔に対して挿入することで係止され、抜去することで係止が解除可能な爪等を有する係止機構を両端部有した柱状に形成されている。つまり、この第一実施形態における支持部材１０７は、工具を用いることなしに、板金部３０および基板部１０５に対して着脱可能となっている。 The support member 107 in this first embodiment is detachably fixed to the substrate unit 105 in the vicinity of the four corners of the substrate unit 105. Further, the support member 107 in the first embodiment has a claw or the like that is locked by being inserted into a hole formed in the sheet metal part 30 and the substrate part 105 and can be released by being removed. It is formed in a column shape having a locking mechanism at both ends. That is, the support member 107 in the first embodiment can be attached to and detached from the sheet metal part 30 and the substrate part 105 without using a tool.
　ブスバー１０３は、上述した端子部１０１ｔと端子部１０２ｔとを電気的に接続する導体である。ブスバー１０３は、導電率の高い銅などの金属で形成された帯状に形成されている。この第一実施形態におけるブスバー１０３は、第一端部１０３Ａ及び第二端部１０３Ｂを含んで、その幅寸法Ｗ１が実質的に一定となるように形成されている。さらに、この第一実施形態におけるブスバー１０３は、上述した第一端部１０３Ａ及び第二端部１０３Ｂの間に、平行部１０３Ｃと、垂直部１０３Ｄと、を備えている。 The bus bar 103 is a conductor that electrically connects the terminal portion 101t and the terminal portion 102t described above. The bus bar 103 is formed in a strip shape made of a metal such as copper having high conductivity. The bus bar 103 in the first embodiment includes the first end portion 103A and the second end portion 103B, and is formed so that the width dimension W1 thereof is substantially constant. Further, the bus bar 103 in the first embodiment includes a parallel portion 103C and a vertical portion 103D between the above-described first end portion 103A and second end portion 103B.
　平行部１０３Ｃは、ブスバー１０３が端子部１０１ｔ及び端子部１０２ｔに接続された状態で、第二端部１０３Ｂを、パワーモジュール１０１側へ延長するように延びている。この平行部１０３Ｃは、基板部１０５及び板金部３０に対して実質的に平行に延びている。そして、この第一実施形態における平行部１０３Ｃは、軸線方向Ｄａで、基板部１０５とパワーモジュール１０１との間の位置に至っている。 The parallel part 103C extends so that the second end part 103B extends to the power module 101 side in a state where the bus bar 103 is connected to the terminal part 101t and the terminal part 102t. The parallel part 103 </ b> C extends substantially parallel to the substrate part 105 and the sheet metal part 30. And the parallel part 103C in this 1st embodiment has reached the position between the board | substrate part 105 and the power module 101 by the axial direction Da.
　垂直部１０３Ｄは、平行部１０３Ｃのパワーモジュール１０１に近い側の端部と、端子部１０１ｔとを繋いでいる。垂直部１０３Ｄは、パワーモジュール１０１に近い側の平行部１０３Ｃの端部から、板金部３０と交差する方向Ｄｈ（言い換えれば、平行部１０３Ｃと垂直）に延びて第一端部１０３Ａに至っている。この第一実施形態で例示する垂直部１０３Ｄと第一端部１０３Ａとのなす角度は、垂直になっている。そして、上述した第一端部１０３Ａは、垂直部１０３Ｄの板金部３０に近い側の端部から、板金部３０と平行にパワーモジュール１０１側に延びている。 The vertical portion 103D connects the end portion of the parallel portion 103C closer to the power module 101 and the terminal portion 101t. The vertical portion 103D extends from the end of the parallel portion 103C on the side close to the power module 101 in the direction Dh intersecting the sheet metal portion 30 (in other words, perpendicular to the parallel portion 103C) and reaches the first end portion 103A. The angle formed by the vertical portion 103D and the first end portion 103A exemplified in the first embodiment is vertical. The first end portion 103A described above extends from the end portion of the vertical portion 103D on the side close to the sheet metal portion 30 to the power module 101 side in parallel with the sheet metal portion 30.
　この第一実施形態におけるブスバー１０３は、第一端部１０３Ａ、垂直部１０３Ｄ、平行部１０３Ｃ、第二端部１０３Ｂを備えることで、側面視でクランク状に形成されている。そして、この第一実施形態においては、平行部１０３Ｃにおいてブスバー１０３に流れる電流が電流センサー１００によって検出される。 The bus bar 103 in the first embodiment has a first end portion 103A, a vertical portion 103D, a parallel portion 103C, and a second end portion 103B, and is formed in a crank shape in a side view. In the first embodiment, the current sensor 100 detects the current flowing through the bus bar 103 in the parallel portion 103C.
　電流センサー１００は、センサー本体部１１０と、ベース部１１１と、第一固定部１１２と、を備えている。
　センサー本体部１１０は、センサー部１１０Ａと第二固定部１１０Ｂとを備えている。センサー部１１０Ａは、貫通孔１１０ｈを有したカレントトランス等からなる。このセンサー部１１０Ａは、貫通孔１１０ｈの周方向で分割不能に形成されている。センサー部１１０Ａは、電流センサー１００の取り付け作業が完了した状態で、ブスバー１０３の平行部１０３Ｃの長手方向に貫通孔１１０ｈの軸線ａが延びる姿勢となっている。言い換えれば、貫通孔１１０ｈの軸線ａは、上述した板金部３０や基板部１０５と実質的に平行に延びている。なお、以下の説明においては、軸線ａの延びる方向を単に軸線方向Ｄａと称する。 The current sensor 100 includes a sensor main body part 110, a base part 111, and a first fixing part 112.
The sensor body 110 includes a sensor part 110A and a second fixing part 110B. The sensor unit 110A is formed of a current transformer or the like having a through hole 110h. This sensor part 110A is formed indivisible in the circumferential direction of the through hole 110h. 110 A of sensor parts are the attitude | positions where the axis line a of the through-hole 110h is extended in the longitudinal direction of the parallel part 103C of the bus bar 103 in the state which the attachment operation | work of the current sensor 100 was completed. In other words, the axis a of the through hole 110h extends substantially parallel to the above-described sheet metal part 30 and the substrate part 105. In the following description, the direction in which the axis a extends is simply referred to as the axis direction Da.
　第二固定部１１０Ｂは、センサー部１１０Ａをベース部１１１に対して固定する。この第一実施形態における第二固定部１１０Ｂは、電流センサー１００の取り付け作業が完了した状態で、ブスバー１０３とベース部１１１との間に配置されている。第二固定部１１０Ｂは、センサー部１１０Ａから貫通孔１１０ｈの軸線方向Ｄａ、言い換えれば、パワーモジュール１０１が配置される方向に向かって突出する突出部１１０ＢＡと、この突出部１１０ＢＡをベース部１１１に対して固定する留め具１１０ＢＢと、を備えている。 The second fixing part 110B fixes the sensor part 110A to the base part 111. The second fixing portion 110 </ b> B in the first embodiment is disposed between the bus bar 103 and the base portion 111 in a state where the mounting operation of the current sensor 100 is completed. The second fixing portion 110B includes a protruding portion 110BA that protrudes from the sensor portion 110A in the axial direction Da of the through hole 110h, in other words, in the direction in which the power module 101 is disposed, and the protruding portion 110BA with respect to the base portion 111. And a fastener 110BB to be fixed.
　留め具１１０ＢＢは、板金部３０と交差する方向Ｄｈから突出部１１０ＢＡを貫通して、ベース部１１１にネジ作用により着脱可能に固定される。この第一実施形態における留め具１１０ＢＢは、貫通孔１１０ｈの軸線ａと交差するとともに板金部３０及び基板部１０５に平行な方向（以下、単に幅方向Ｄｗと称する）に間隔をあけて二つ設けられている。これら二つの留め具１１０ＢＢのうちの一つは、板金部３０に交差する方向Ｄｈから見て、ブスバー１０３と重なる位置に配置されている場合を例示している。つまり、この場合、ブスバー１０３が貫通孔１１０ｈに挿入された状態では、留め具１１０ＢＢに工具を差し込むことができない。そのため、ブスバー１０３が貫通孔１０ｈに挿入された状態では、第二固定部１１０Ｂをベース部１１１に対して着脱させることができなくなる。 The fastener 110BB penetrates the protruding portion 110BA from the direction Dh intersecting the sheet metal portion 30, and is detachably fixed to the base portion 111 by a screw action. Two fasteners 110BB in the first embodiment are provided at intervals in a direction (hereinafter simply referred to as the width direction Dw) that intersects the axis a of the through hole 110h and is parallel to the sheet metal part 30 and the substrate part 105. It has been. One of these two fasteners 110BB illustrates the case where it is arranged at a position overlapping the bus bar 103 when viewed from the direction Dh intersecting the sheet metal part 30. That is, in this case, the tool cannot be inserted into the fastener 110BB in a state where the bus bar 103 is inserted into the through hole 110h. Therefore, in a state where the bus bar 103 is inserted into the through hole 10h, the second fixing portion 110B cannot be attached to and detached from the base portion 111.
　ベース部１１１は、センサー本体部１１０を装着可能な装着面１１１ａを有している。この第一実施形態で例示するベース部１１１は、平面視でセンサー本体部１１０よりも大きい四角形に形成されるとともに、幅方向Ｄｗ及び軸線方向Ｄａに広がる平板状に形成されている。また、この第一実施形態で例示するベース部１１１は、幅方向Ｄｗでセンサー本体部１１０よりも突出するように形成され、この突出した部分に第一固定部１１２が固定可能となっている。 The base 111 has a mounting surface 111a to which the sensor main body 110 can be mounted. The base portion 111 exemplified in the first embodiment is formed in a rectangular shape larger than the sensor main body portion 110 in plan view, and is formed in a flat plate shape extending in the width direction Dw and the axial direction Da. Further, the base portion 111 exemplified in the first embodiment is formed so as to protrude from the sensor main body portion 110 in the width direction Dw, and the first fixing portion 112 can be fixed to the protruding portion.
　第一固定部１１２は、電流センサー１００を取り付ける取付対象物である基板部１０５の表面１０５ａ（取付面）に対して表面１０５ａと交差する方向（言い換えれば、板金部３０と交差する方向Ｄｈ）に、ベース部１１１を着脱可能に固定する。この第一実施形態においては、二つの第一固定部１１２が設けられており、これら第一固定部１１２が、それぞれベース部１１１の幅方向Ｄｗの両側を着脱可能に支持している。つまり、第一固定部１１２は、板金部３０と交差する方向Ｄｈから見て、ブスバー１０３と重ならない位置に配置される。 The first fixing portion 112 is in a direction intersecting the surface 105a (in other words, a direction Dh intersecting the sheet metal portion 30) with respect to the surface 105a (attachment surface) of the substrate portion 105 which is an attachment target to which the current sensor 100 is attached. The base portion 111 is detachably fixed. In the first embodiment, two first fixing portions 112 are provided, and the first fixing portions 112 removably support both sides of the base portion 111 in the width direction Dw. That is, the first fixing portion 112 is disposed at a position that does not overlap the bus bar 103 when viewed from the direction Dh that intersects the sheet metal portion 30.
　また、これら第一固定部１１２は、基板部１０５に対しても着脱可能になっている。ここで、第一固定部１１２としては、上述した支持部材１０７と同様の係止機構を両端部に有した柱状の部材を用いることができる。この場合、工具を用いずに、ベース部１１１を、第一固定部１１２又は、基板部１０５に対して着脱することができる。
　この第一実施形態における二つの第一固定部１１２は、それぞれ同一の長さで形成されており、第一固定部１１２により固定されたベース部１１１の姿勢は、基板部１０５と実質的に平行な姿勢となっている。 In addition, these first fixing portions 112 are also detachable from the substrate portion 105. Here, as the first fixing portion 112, a columnar member having locking mechanisms similar to those of the support member 107 described above at both ends can be used. In this case, the base portion 111 can be attached to and detached from the first fixing portion 112 or the substrate portion 105 without using a tool.
The two first fixing portions 112 in the first embodiment are formed with the same length, and the posture of the base portion 111 fixed by the first fixing portion 112 is substantially parallel to the substrate portion 105. It has become an attitude.
　この第一実施形態における電流センサー１００は、上述した構成を備えている。次に、この電流センサー１００の取付方法について図面を参照しながら説明する。
　図３は、この発明の第一実施形態における電流センサーの取付方法のフローチャートである。図４は、この発明の第一実施形態におけるセンサー本体部にブスバーを挿入する工程を示す側面図である。図５は、この発明の第一実施形態における電流センサーを基板に固定する工程を示す側面図である。 The current sensor 100 in the first embodiment has the above-described configuration. Next, a method for attaching the current sensor 100 will be described with reference to the drawings.
FIG. 3 is a flowchart of the current sensor mounting method according to the first embodiment of the present invention. FIG. 4 is a side view showing a process of inserting a bus bar into the sensor main body according to the first embodiment of the present invention. FIG. 5 is a side view showing a process of fixing the current sensor to the substrate in the first embodiment of the present invention.
　図３、図４に示すように、まず、センサー本体部１１０をベース部１１１の装着面１１１ａに実装する（ステップＳ０１）。具体的には、第二固定部１１０Ｂによってセンサー本体部１１０をベース部１１１の装着面１１１ａに固定する。
　次に、センサー本体部１１０の貫通孔１１０ｈにブスバー１０３を貫通させる（ステップＳ０２）。より具体的には、ブスバー１０３を第二端部１０３Ｂから貫通孔１１０ｈに挿入し、センサー本体部１１０が平行部１０３Ｃの位置に配置されるようにする。 As shown in FIGS. 3 and 4, first, the sensor body 110 is mounted on the mounting surface 111a of the base 111 (step S01). Specifically, the sensor body 110 is fixed to the mounting surface 111a of the base 111 by the second fixing part 110B.
Next, the bus bar 103 is passed through the through hole 110h of the sensor main body 110 (step S02). More specifically, the bus bar 103 is inserted into the through hole 110h from the second end portion 103B so that the sensor main body 110 is disposed at the position of the parallel portion 103C.
　さらに、図５に示すように、ベース部１１１を、基板部１０５の表面１０５ａに対して、表面１０５ａと交差する方向（言い換えれば、板金部３０と交差する方向Ｄｈ）から装着する（ステップＳ０３）。具体的には、ブスバー１０３が貫通した状態の電流センサー１００のベース部１１１が基板部１０５と対向するように配置し、板金部３０と交差する方向Ｄｈにベース部１１１を基板部１０５に対して接近させる。そして、第一固定部１１２によって、基板部１０５に対してベース部１１１を固定する。ここで、図５においては、第一固定部１１２の一方の端部を基板部１０５に固定した後に、第一固定部１１２の他方の端部をベース部１１１に固定する場合を例示している。しかし、第一固定部１１２は、一方の端部をベース部１１１に固定した後に他方の端部を基板部１０５に固定するようにしても良い。 Further, as shown in FIG. 5, the base 111 is mounted on the surface 105a of the substrate 105 from the direction intersecting the surface 105a (in other words, the direction Dh intersecting the sheet metal part 30) (step S03). . Specifically, the base portion 111 of the current sensor 100 in a state where the bus bar 103 is penetrated is disposed so as to face the substrate portion 105, and the base portion 111 is placed with respect to the substrate portion 105 in the direction Dh intersecting the sheet metal portion 30. Move closer. Then, the base unit 111 is fixed to the substrate unit 105 by the first fixing unit 112. Here, FIG. 5 illustrates a case where the other end of the first fixing portion 112 is fixed to the base portion 111 after one end of the first fixing portion 112 is fixed to the substrate portion 105. . However, the first fixing portion 112 may fix the other end portion to the substrate portion 105 after fixing one end portion to the base portion 111.
　その後、留め具１０４，１０６（図５において図示せず）によってブスバー１０３の第一端部１０３Ａ、第二端部１０３Ｂをそれぞれ端子部１０１ｔ，１０２ｔに固定する。 Thereafter, the first end portion 103A and the second end portion 103B of the bus bar 103 are fixed to the terminal portions 101t and 102t by the fasteners 104 and 106 (not shown in FIG. 5), respectively.
　したがって、上述した第一実施形態によれば、センサー本体部１１０を装着したベース部１１１を、第一固定部１１２によって基板部１０５の表面１０５ａと交差する方向で、基板部１０５の表面１０５ａに対して着脱することができる。これにより、センサー本体部１１０にブスバー１０３を貫通させた後に、ベース部１１１を基板部１０５の表面１０５ａに対して表面１０５ａと交差する方向に接近させて、ベース部１１１を基板部１０５の表面１０５ａに固定することができる。そのため、図１、図２、図５に二点鎖線で例示するように、ブスバー１０３を貫通孔１１０ｈに貫通させるためのスペースを確保する必要が無い。その結果、電流センサー１００の周辺に配置される部品の配置自由度を向上できる。 Therefore, according to the first embodiment described above, the base portion 111 on which the sensor main body portion 110 is mounted is made to the surface 105a of the substrate portion 105 in a direction intersecting the surface 105a of the substrate portion 105 by the first fixing portion 112. Can be attached and detached. Thus, after passing the bus bar 103 through the sensor main body 110, the base portion 111 is moved closer to the surface 105 a of the substrate portion 105 in the direction intersecting the surface 105 a, so that the base portion 111 is moved to the surface 105 a of the substrate portion 105. Can be fixed to. Therefore, as illustrated by a two-dot chain line in FIGS. 1, 2, and 5, it is not necessary to secure a space for allowing the bus bar 103 to penetrate the through hole 110 h. As a result, it is possible to improve the degree of freedom of arrangement of components arranged around the current sensor 100.
　また、センサー本体部１１０をベース部１１１に装着するため、ベース部１１１に対するセンサー本体部１１０の配置自由度を向上できる。その結果、ブスバー１０３をセンサー本体部１１０の配置に応じた形状にする必要が無くなり、ブスバー１０３の形状が複雑化することを抑制できる。 In addition, since the sensor main body 110 is attached to the base 111, the degree of freedom in arranging the sensor main body 110 with respect to the base 111 can be improved. As a result, it is not necessary to make the bus bar 103 in a shape corresponding to the arrangement of the sensor main body 110, and the shape of the bus bar 103 can be prevented from becoming complicated.
　さらに、第一固定部１１２は、ベース部１１１を基板部１０５の表面１０５ａから離れた位置に保持している。そのため、ベース部１１１と基板部１０５の表面１０５ａとの間に空間を形成することができる。その結果、ベース部１１１と基板部１０５の表面１０５ａとの間に形成される空間を、例えば、配線や部品等を配置する空間として有効利用することができる。 Furthermore, the first fixing portion 112 holds the base portion 111 at a position away from the surface 105 a of the substrate portion 105. Therefore, a space can be formed between the base portion 111 and the surface 105 a of the substrate portion 105. As a result, the space formed between the base portion 111 and the surface 105a of the substrate portion 105 can be effectively used as a space for arranging wiring, components, and the like, for example.
　また、第二固定部１１０Ｂを備えることで、ベース部１１１に対してセンサー本体部１１０を着脱することができる。そのため、センサー本体部１１０を容易に交換することができる。
　さらに、第一固定部１１２が、ベース部１１１に対して、板金部３０と交差する方向Ｄｈから見てブスバー１０３と重ならない位置で固定される。そのため、第一固定部１１２をベース部１１１に固定する際に、ブスバー１０３によって視界が遮られないため、第一固定部１１２をベース部１１１に固定する作業を容易に行うことができる。 Moreover, the sensor main body 110 can be attached to and detached from the base 111 by providing the second fixing portion 110B. Therefore, the sensor main body 110 can be easily replaced.
Further, the first fixing portion 112 is fixed to the base portion 111 at a position that does not overlap the bus bar 103 when viewed from the direction Dh intersecting the sheet metal portion 30. Therefore, when the first fixing portion 112 is fixed to the base portion 111, the visual field is not blocked by the bus bar 103, so that the operation of fixing the first fixing portion 112 to the base portion 111 can be easily performed.
（第二実施形態）
　次に、この発明の第二実施形態における電流センサーを図面に基づき説明する。上述した第一実施形態の電流センサー１００は、基板部１０５に取り付けられていたが、この第二実施形態の電流センサーは、板金部３０に取り付けられている点でのみ相違する。そのため、上述した第一実施形態と同一部分に同一符号を付して説明するとともに、重複する説明を省略する。
　図６は、この発明の第二実施形態における図１に相当する側面図である。図７は、この発明の第二実施形態における図２に相当する平面図である。 (Second embodiment)
Next, a current sensor according to a second embodiment of the present invention will be described with reference to the drawings. The current sensor 100 according to the first embodiment described above is attached to the substrate unit 105, but the current sensor according to the second embodiment is different only in that it is attached to the sheet metal part 30. Therefore, the same portions as those in the first embodiment described above are described with the same reference numerals, and redundant descriptions are omitted.
FIG. 6 is a side view corresponding to FIG. 1 in the second embodiment of the present invention. FIG. 7 is a plan view corresponding to FIG. 2 in the second embodiment of the present invention.
　図６、図７に示すように、この第二実施形態における電流センサー２００は、第一実施形態の電流センサー１００と同様に、パワーモジュール１０１と、端子台１０２とを繋ぐ導体であるブスバー１０３に流れる電流を検出する。
　基板部２０５は、上述した第一実施形態の基板部１０５と同様に、複数の支持部材１０７を介して板金部３０に支持されている。これら支持部材１０７は、基板部２０５が板金部３０と接触しないように、基板部２０５を板金部３０から離れた位置で保持している。この基板部２０５は、第一実施形態の基板部１０５と同様に、平面視で四角形の平板状に形成され、板金部３０に対して実質的に平行な姿勢で支持部材１０７によって保持されている。 As shown in FIGS. 6 and 7, the current sensor 200 in the second embodiment is similar to the current sensor 100 of the first embodiment in the bus bar 103 that is a conductor connecting the power module 101 and the terminal block 102. The flowing current is detected.
The substrate unit 205 is supported by the sheet metal unit 30 via a plurality of support members 107 in the same manner as the substrate unit 105 of the first embodiment described above. These support members 107 hold the substrate portion 205 at a position away from the sheet metal portion 30 so that the substrate portion 205 does not contact the sheet metal portion 30. Similar to the substrate unit 105 of the first embodiment, the substrate unit 205 is formed in a rectangular flat plate shape in plan view, and is held by the support member 107 in a posture substantially parallel to the sheet metal unit 30. .
　この基板部２０５は、第一実施形態の基板部１０５と異なり、電流センサー２００を取り付ける取付面を備えていない。そのため、基板部２０５は、第一実施形態の基板部２０５よりも、軸線方向Ｄａの寸法が小さく形成されている。さらに、軸線方向Ｄａにおける基板部２０５とパワーモジュール１０１との間に電流センサー２００が配置できるように、基板部２０５は、軸線方向Ｄａでパワーモジュール１０１から離れて配置されている。 The substrate unit 205 does not include an attachment surface to which the current sensor 200 is attached, unlike the substrate unit 105 of the first embodiment. Therefore, the substrate part 205 is formed to have a smaller dimension in the axial direction Da than the substrate part 205 of the first embodiment. Further, the substrate unit 205 is disposed away from the power module 101 in the axial direction Da so that the current sensor 200 can be disposed between the substrate unit 205 and the power module 101 in the axial direction Da.
　この第二実施形態における端子台１０２は、基板部２０５上に装着されている。そして、この端子台１０２の端子部１０２ｔは、第一実施形態と同様に、板金部３０と交差する方向Ｄｈ（言い換えれば、図６の上下方向）で、上述したパワーモジュール１０１の端子部１０１ｔよりも、板金部３０から離れた位置に設けられている。 The terminal block 102 in the second embodiment is mounted on the substrate unit 205. And the terminal part 102t of this terminal block 102 is from the terminal part 101t of the power module 101 mentioned above in the direction Dh (in other words, the up-down direction of FIG. 6) which cross | intersects the sheet-metal part 30, like 1st embodiment. Is also provided at a position away from the sheet metal part 30.
　ブスバー１０３は、第一実施形態と同様の構成であり、導電率の高い銅などの金属で形成された幅寸法Ｗ１が一定な帯状に形成されている。このブスバー１０３は、第一端部１０３Ａ、第二端部１０３Ｂ、平行部１０３Ｃと、垂直部１０３Ｄと、をそれぞれ備えている。 The bus bar 103 has the same configuration as that of the first embodiment, and is formed in a band shape having a constant width dimension W1 made of metal such as copper having high conductivity. The bus bar 103 includes a first end portion 103A, a second end portion 103B, a parallel portion 103C, and a vertical portion 103D.
　電流センサー２００は、センサー本体部１１０と、ベース部１１１と、第一固定部２１２と、を備えている。このセンサー本体部１１０は、第一実施形態と同じものを使用することができる。センサー本体部１１０は、センサー部１１０Ａと第二固定部１１０Ｂとを備えている。センサー部１１０Ａは、電流センサー２００の取り付け作業が完了した状態で、ブスバー１０３の平行部１０３Ｃの長手方向に貫通孔１１０ｈの軸線ａが延びる姿勢となっている。 The current sensor 200 includes a sensor main body part 110, a base part 111, and a first fixing part 212. The same sensor body 110 as that of the first embodiment can be used. The sensor body 110 includes a sensor part 110A and a second fixing part 110B. 110 A of sensor parts are the attitude | positions where the axis line a of the through-hole 110h is extended in the longitudinal direction of the parallel part 103C of the bus bar 103 in the state which the attachment operation | work of the current sensor 200 was completed.
　第二固定部１１０Ｂは、センサー部１１０Ａをベース部１１１に対して固定する。この第二固定部１１０Ｂは、電流センサー２００の取り付け作業が完了した状態で、板金部３０と交差する方向Ｄｈにおけるブスバー１０３とベース部１１１との間に配置される。この第二固定部１１０Ｂは、第一実施形態と同様に、突出部１１０ＢＡと、留め具１１０ＢＢと、を備えている。 The second fixing part 110B fixes the sensor part 110A to the base part 111. The second fixing portion 110 </ b> B is disposed between the bus bar 103 and the base portion 111 in the direction Dh intersecting the sheet metal portion 30 in a state where the mounting operation of the current sensor 200 is completed. This 2nd fixing | fixed part 110B is provided with protrusion 110BA and fastener 110BB similarly to 1st embodiment.
　留め具１１０ＢＢは、板金部３０と交差する方向Ｄｈから突出部１１０ＢＡを貫通して、ベース部１１１にネジ作用により着脱可能に固定される。この第二実施形態における留め具１１０ＢＢも、第一実施形態と同様に、幅方向Ｄｗに間隔をあけて二つ設けられている。これら二つの留め具１１０ＢＢのうちの一つは、板金部３０に交差する方向Ｄｈから見て、ブスバー１０３と重なる位置に配置されている。つまり、ブスバー１０３が貫通孔１１０ｈに挿入された状態では、留め具１１０ＢＢに工具を差し込むことができない。そのため、ブスバー１０３が貫通孔１１０ｈに挿入された状態では、第二固定部１１０Ｂをベース部１１１から離脱させることができなくなる。 The fastener 110BB penetrates the protruding portion 110BA from the direction Dh intersecting the sheet metal portion 30, and is detachably fixed to the base portion 111 by a screw action. Similarly to the first embodiment, two fasteners 110BB in the second embodiment are also provided at intervals in the width direction Dw. One of these two fasteners 110BB is disposed at a position overlapping the bus bar 103 when viewed from the direction Dh intersecting the sheet metal part 30. That is, in the state where the bus bar 103 is inserted into the through hole 110h, the tool cannot be inserted into the fastener 110BB. Therefore, in a state where the bus bar 103 is inserted into the through hole 110h, the second fixing portion 110B cannot be detached from the base portion 111.
　ベース部１１１は、センサー本体部１１０を装着可能な装着面１１１ａを有している。このベース部１１１は、第一実施形態と同様に、幅方向Ｄｗでセンサー本体部１１０よりも突出するように形成され、この突出した部分に第一固定部２１２が固定可能となっている。 The base 111 has a mounting surface 111a to which the sensor main body 110 can be mounted. As in the first embodiment, the base portion 111 is formed so as to protrude from the sensor body 110 in the width direction Dw, and the first fixing portion 212 can be fixed to the protruding portion.
　第一固定部２１２は、電流センサー２００を取り付ける取付対象物である板金部３０の内面３０ａ（取付面）に対して、板金部３０と交差する方向Ｄｈにベース部１１１を着脱可能に固定する。この第二実施形態においては、第一実施形態と同様に、二つの第一固定部２１２が設けられており、これら第一固定部２１２が、それぞれベース部１１１の幅方向Ｄｗの両側を着脱可能に支持している。つまり、第一固定部２１２は、板金部３０と交差する方向Ｄｈから見て、ブスバー１０３と重ならない位置に配置される。 The first fixing part 212 removably fixes the base part 111 in the direction Dh intersecting the sheet metal part 30 with respect to the inner surface 30a (attachment surface) of the sheet metal part 30 as an attachment object to which the current sensor 200 is attached. In the second embodiment, as in the first embodiment, two first fixing portions 212 are provided, and these first fixing portions 212 are detachable on both sides of the base portion 111 in the width direction Dw. I support it. That is, the first fixing portion 212 is disposed at a position that does not overlap the bus bar 103 when viewed from the direction Dh that intersects the sheet metal portion 30.
　また、これら第一固定部２１２は、板金部３０に対しても着脱可能になっている。ここで、第一固定部２１２としては、上述した第一実施形態の第一固定部１１２と同様の係止機構を両端部に有した柱状の部材を用いることができる。この場合、工具を用いずに、ベース部１１１を、第一固定部２１２又は、板金部３０に対して着脱することができる。
　この第二実施形態で例示する二つの第一固定部２１２は、それぞれ同一の長さで形成されており、第一固定部２１２により固定されたベース部１１１の姿勢は、板金部３０と実質的に平行な姿勢となっている。 Further, these first fixing portions 212 can also be attached to and detached from the sheet metal portion 30. Here, as the 1st fixing | fixed part 212, the columnar member which has the latching mechanism similar to the 1st fixing | fixed part 112 of 1st embodiment mentioned above at both ends can be used. In this case, the base part 111 can be attached to and detached from the first fixing part 212 or the sheet metal part 30 without using a tool.
The two first fixing portions 212 exemplified in the second embodiment are formed with the same length, and the posture of the base portion 111 fixed by the first fixing portion 212 is substantially the same as that of the sheet metal portion 30. The posture is parallel to.
　この第二実施形態における電流センサー２００は、上述した構成を備えている。次に、この第二実施形態の電流センサー２００の取付方法について図面を参照しながら説明する。
　図８は、この発明の第二実施形態における図３に相当するフローチャートである。図９は、この発明の第二実施形態における電流センサーの取り付け手順を示す側面図である。
　図８、図９に示すように、この第二実施形態における電流センサー２００の取付方法は、第一実施形態の電流センサー１００の取付方法と、取付対象物が異なるだけである。
　まず、第一実施形態と同様に、センサー本体部１１０をベース部１１１の装着面１１１ａに実装する（ステップＳ０１）。
　さらに、センサー本体部１１０の貫通孔１１０ｈにブスバー１０３を貫通させる（ステップＳ０２）。 The current sensor 200 in the second embodiment has the above-described configuration. Next, a method for mounting the current sensor 200 according to the second embodiment will be described with reference to the drawings.
FIG. 8 is a flowchart corresponding to FIG. 3 in the second embodiment of the present invention. FIG. 9 is a side view showing the attachment procedure of the current sensor in the second embodiment of the present invention.
As shown in FIGS. 8 and 9, the mounting method of the current sensor 200 in the second embodiment is different from the mounting method of the current sensor 100 of the first embodiment only in the mounting object.
First, similarly to the first embodiment, the sensor main body 110 is mounted on the mounting surface 111a of the base 111 (step S01).
Further, the bus bar 103 is passed through the through hole 110h of the sensor body 110 (step S02).
　次いで、ベース部１１１を、軸線方向Ｄａでパワーモジュール１０１と基板部２０５との間の板金部３０の内面３０ａに対して、板金部３０と交差する方向Ｄｈから装着する（ステップＳ１３）。
　具体的には、ブスバー１０３が貫通した状態の電流センサー２００のベース部１１１を板金部３０と対向するように配置し、板金部３０と交差する方向Ｄｈで、このベース部１１１を板金部３０に対して接近させる。そして、第一固定部２１２によって、板金部３０に対してベース部１１１を固定する。ここで、図９においては、第一固定部２１２の一方の端部を板金部３０に固定した後に、第一固定部２１２の他方の端部をベース部１１１に固定する場合を例示している。しかし、第一固定部２１２は、一方の端部をベース部１１１に固定した後に他方の端部を板金部３０に固定するようにしても良い。 Next, the base part 111 is mounted from the direction Dh intersecting the sheet metal part 30 on the inner surface 30a of the sheet metal part 30 between the power module 101 and the substrate part 205 in the axial direction Da (step S13).
Specifically, the base portion 111 of the current sensor 200 in a state where the bus bar 103 is penetrated is disposed so as to face the sheet metal portion 30, and the base portion 111 is placed on the sheet metal portion 30 in a direction Dh that intersects the sheet metal portion 30. Approach. Then, the base portion 111 is fixed to the sheet metal portion 30 by the first fixing portion 212. Here, in FIG. 9, the case where the other end portion of the first fixing portion 212 is fixed to the base portion 111 after the one end portion of the first fixing portion 212 is fixed to the sheet metal portion 30 is illustrated. . However, the first fixing part 212 may fix the other end to the sheet metal part 30 after fixing one end to the base part 111.
　その後、留め具１０４，１０６（図９において図示せず）によってブスバー１０３の第一端部１０３Ａ、第二端部１０３Ｂをそれぞれ端子部１０１ｔ，１０２ｔに固定する。 Thereafter, the first end portion 103A and the second end portion 103B of the bus bar 103 are fixed to the terminal portions 101t and 102t by the fasteners 104 and 106 (not shown in FIG. 9), respectively.
　したがって、上述した第二実施形態によれば、第一実施形態の作用効果に加え、基板部２０５上に、電流センサー２００を設置するスペースを必要としないので、例えば、基板部２０５を、図７中に一点鎖線で示す大きさから実線で示す大きさへ小型化することができる。 Therefore, according to the second embodiment described above, since the space for installing the current sensor 200 is not required on the substrate unit 205 in addition to the function and effect of the first embodiment, for example, the substrate unit 205 is configured as shown in FIG. The size can be reduced from the size indicated by the alternate long and short dash line to the size indicated by the solid line.
（第一、第二実施形態の第一変形例）
　図１０は、この発明の第一、第二実施形態の第一変形例における電流センサーの平面図である。
　例えば、図１０に示す第一変形例の電流センサー３００のように、センサー本体部１１０の貫通孔１１０ｈを貫通するブスバー１０３を位置決めする位置決め部３０１を備えていてもよい。この第一変形例で例示する位置決め部３０１は、ベース部１１１から板金部３０と交差する方向Ｄｈに突出するように形成されている。 (First modification of the first and second embodiments)
FIG. 10 is a plan view of a current sensor in a first modification of the first and second embodiments of the present invention.
For example, like the current sensor 300 of the first modification shown in FIG. 10, a positioning unit 301 that positions the bus bar 103 that passes through the through hole 110 h of the sensor main body 110 may be provided. The positioning part 301 exemplified in the first modification is formed so as to protrude from the base part 111 in the direction Dh intersecting the sheet metal part 30.
　位置決め部３０１は、軸線方向Ｄａでセンサー本体部１１０を挟んだ両側にそれぞれ配置されている。これら位置決め部３０１によって、端子部１０１ｔ、端子部１０２ｔに固定される前のブスバー１０３の位置を安定させることができる。そのため、電流センサー３００を、基板部１０５や板金部３０に取り付ける際に、電流センサー３００からブスバー１０３が脱落しないように抑えたりする必要が無くなり作業者の負担を軽減できる。 The positioning portions 301 are respectively arranged on both sides of the sensor main body 110 in the axial direction Da. These positioning portions 301 can stabilize the position of the bus bar 103 before being fixed to the terminal portion 101t and the terminal portion 102t. Therefore, when attaching the current sensor 300 to the board part 105 or the sheet metal part 30, it is not necessary to suppress the bus bar 103 from dropping off from the current sensor 300, and the burden on the operator can be reduced.
　なお、この第一変形例における二つの位置決め部３０１は、幅方向Ｄｗでブスバー１０３の両側部を挟み込むように、板金部３０と交差する方向Ｄｈに突出する凸部３０２を有している場合を例示しているが、ブスバー１０３を位置決めできる構成であれば如何なる構成であっても良い。 The two positioning portions 301 in this first modification have a case where the protruding portions 302 protrude in the direction Dh intersecting the sheet metal portion 30 so as to sandwich both side portions of the bus bar 103 in the width direction Dw. Although illustrated, any configuration is possible as long as the bus bar 103 can be positioned.
（その他変形例）
　この発明は上述した各実施形態の構成に限られるものではなく、その要旨を逸脱しない範囲で設計変更可能である。
　例えば、ブスバー１０３の形状は、上述した実施形態におけるブスバー１０３の形状に限られない。また、電流センサー１００，２００，３００を貫通する導体はブスバーに限られない。 (Other variations)
The present invention is not limited to the configuration of each of the embodiments described above, and the design can be changed without departing from the gist thereof.
For example, the shape of the bus bar 103 is not limited to the shape of the bus bar 103 in the above-described embodiment. Moreover, the conductor which penetrates the current sensors 100, 200 and 300 is not limited to the bus bar.
　また、センサー本体部１１０が、第二固定部１１０Ｂによってベース部１１１に着脱可能に固定される場合について説明した。しかし、第二固定部１１０Ｂを省略して、接着や半田によってセンサー本体部１１０をベース部１１１に固定して、容易に着脱できないようにしても良い。 In addition, the case where the sensor main body 110 is detachably fixed to the base 111 by the second fixing portion 110B has been described. However, the second fixing portion 110B may be omitted, and the sensor main body portion 110 may be fixed to the base portion 111 by adhesion or solder so that it cannot be easily attached or detached.
　また、第二固定部１１０Ｂの留め具１１０ＢＢがビスの場合を例示したが、センサー本体部１１０をベース部１１１に着脱可能な構成であればよく、例えば、工具を用いずに着脱できる第一固定部１１２と同様の係止機構を用いたり、面ファスナーや、両面テープなど、他の留め具を用いたりしても良い。 Moreover, although the case where the fastener 110BB of the second fixing portion 110B is a screw is illustrated, the sensor main body portion 110 may be configured to be detachable from the base portion 111. For example, the first fixing that can be attached and detached without using a tool. A locking mechanism similar to that of the portion 112 may be used, or other fasteners such as a hook-and-loop fastener and a double-sided tape may be used.
　さらに、第一固定部１１２が、爪等を有する係止機構によって、基板部１０５やベース部１１１に対して着脱可能になっている場合を例示した。しかし、第一固定部１１２によって着脱可能にする機構は、上記の係止機構に限られない。例えば、ビスやボルト等のネジ留め具を用いて着脱可能にしたり、面ファスナーや両面テープを用いて着脱可能にしたりしても良い。 Furthermore, the case where the 1st fixing | fixed part 112 can be attached or detached with respect to the board | substrate part 105 or the base part 111 by the latching mechanism which has a nail | claw etc. was illustrated. However, the mechanism that can be attached and detached by the first fixing portion 112 is not limited to the above-described locking mechanism. For example, it may be detachable using screw fasteners such as screws or bolts, or may be detachable using a hook-and-loop fastener or double-sided tape.
　また例えば、第一固定部１１２において、ビスやボルト等のネジ留め具を用いる場合、第一固定部１１２が、基板部１０５の表面１０５ａと交差する方向（言い換えれば、板金部３０と交差する方向Ｄｈ）から見てブスバー１０３と重ならない位置でベース部１１１に対して固定するようにしても良い。このようにすることで、第一固定部１１２によるベース部１１１の着脱作業に用いるドライバー等の工具の使用がブスバー１０３によって妨げられないので、円滑に工具を使用することが可能になる。 Further, for example, when a screw fastener such as a screw or a bolt is used in the first fixing portion 112, the first fixing portion 112 intersects the surface 105a of the substrate portion 105 (in other words, the direction intersecting the sheet metal portion 30). Dh) may be fixed to the base portion 111 at a position that does not overlap with the bus bar 103. By doing in this way, since use of tools, such as a screwdriver used for attachment or detachment work of base part 111 by the 1st fixed part 112, is not prevented by bus bar 103, it becomes possible to use a tool smoothly.
　また、上述した各実施形態においては、第一固定部１１２，２１２によって、取付面である基板部１０５の表面１０５ａや、板金部３０の内面３０ａから離れた位置にベース部１１１を保持する場合について説明した。しかし、第一固定部１１２は、ベース部１１１と基板部１０５とが接触した状態で、ベース部１１１を表面１０５ａに対して着脱可能に固定してもよい。同様に、第一固定部２１２は、ベース部１１１と板金部３０が接触した状態で、ベース部１１１を内面３０ａに対して着脱可能に固定しても良い。 Moreover, in each embodiment mentioned above, about the case where the base part 111 is hold | maintained in the position away from the surface 105a of the board | substrate part 105 which is an attachment surface, or the inner surface 30a of the sheet-metal part 30 by the 1st fixing parts 112 and 212. explained. However, the first fixing portion 112 may detachably fix the base portion 111 to the surface 105a in a state where the base portion 111 and the substrate portion 105 are in contact with each other. Similarly, the first fixing portion 212 may detachably fix the base portion 111 to the inner surface 30a in a state where the base portion 111 and the sheet metal portion 30 are in contact with each other.
　さらに、上述した各実施形態においては、取付対象物として、基板部１０５や筐体２０の板金部３０を例示したが、取付対象物は、これら基板部１０５や筐体２０の板金部３０に限られない。 Further, in each of the embodiments described above, the board part 105 and the sheet metal part 30 of the housing 20 are exemplified as the attachment object. However, the attachment object is limited to the board part 105 and the sheet metal part 30 of the housing 20. I can't.
　上記電流センサー及び電流センサーの取り付け方法によれば、周辺における部品の配置自由度を向上できるとともに、導体の形状が複雑化することを抑制できる。 According to the current sensor and the current sensor mounting method, it is possible to improve the degree of freedom of arrangement of components in the periphery and to suppress the complexity of the shape of the conductor.
１０　インバーター制御部
１０ｈ　貫通孔
２０　筐体
３０　板金部（取付対象物）
３０ａ　内面（取付面）
１００，２００，３００　電流センサー
１０１　パワーモジュール
１０１ａ　面
１０１ｔ　端子部
１０２　端子台
１０２ｔ　端子部
１０３　ブスバー
１０３Ａ　第一端部
１０３Ａｈ　取付孔
１０３Ｂ　第二端部
１０３Ｂｈ　取付孔
１０３Ｃ　平行部
１０３Ｄ　垂直部
１０４　第一留め具
１０５　基板部（取付対象物）
１０５ａ　表面（取付面）
１０６　留め具
１０７　支持部材
１１０　センサー本体部
１１０Ａ　センサー部
１１０Ｂ　第二固定部
１１０ＢＡ　突出部
１１０ＢＢ　留め具
１１０ｈ　貫通孔
１１１　ベース部
１１１ａ　装着面
１１２，２１２　第一固定部
２０５　基板部
３０１　位置決め部
３０２　凸部 10 Inverter control part 10h Through-hole 20 Case 30 Sheet metal part (attachment object)
30a Inner surface (mounting surface)
100, 200, 300 Current sensor 101 Power module 101a Surface 101t Terminal portion 102 Terminal block 102t Terminal portion 103 Bus bar 103A First end portion 103Ah Mounting hole 103B Second end portion 103Bh Mounting hole 103C Parallel portion 103D Vertical portion 104 First fastener 105 Board part (object to be mounted)
105a Surface (mounting surface)
106 Fastener 107 Support member 110 Sensor body 110A Sensor 110B Second fixing part 110BA Protruding part 110BB Fastening 110h Through hole 111 Base part 111a Mounting surface 112, 212 First fixing part 205 Substrate part 301 Positioning part 302 Convex part

Claims (6)

  1. 　取付対象物の取付面に装着される電流センサーであって、
    　貫通孔を有し、前記貫通孔を貫通する電流を検出可能なセンサー本体部と、
    　前記センサー本体部を装着可能な装着面を有するベース部と、
    　前記ベース部を、前記取付面に対して前記取付面と交差する方向に着脱可能に固定する第一固定部と、
    を備える電流センサー。     A current sensor mounted on the mounting surface of the mounting object,
    A sensor body having a through hole and capable of detecting a current passing through the through hole;
    A base portion having a mounting surface to which the sensor body portion can be mounted;
    A first fixing portion that removably fixes the base portion to the mounting surface in a direction intersecting the mounting surface;
    With current sensor.
  2. 　前記第一固定部は、
    　前記ベース部を前記取付面から離れた位置に保持する請求項１に記載の電流センサー。     The first fixing part is
    The current sensor according to claim 1, wherein the base portion is held at a position away from the mounting surface.
  3. 　前記ベース部に対して前記センサー本体部を着脱可能に固定する第二固定部を備える請求項１又は２に記載の電流センサー。 The current sensor according to claim 1, further comprising a second fixing portion that detachably fixes the sensor main body portion with respect to the base portion.
  4. 　前記センサー本体部の貫通孔を貫通する導体を位置決めする位置決め部を備える請求項１から３の何れか一項に記載の電流センサー。 The current sensor according to any one of claims 1 to 3, further comprising a positioning portion that positions a conductor penetrating the through hole of the sensor main body portion.
  5. 　前記第一固定部は、
    　前記ベース部に対して、前記取付面と交差する方向から見て、前記センサー本体部の貫通孔を貫通する導体と重ならない位置で固定されている請求項１から４の何れか一項に記載の電流センサー。     The first fixing part is
    5. The fixing unit according to claim 1, wherein the base portion is fixed at a position that does not overlap a conductor penetrating the through hole of the sensor main body portion when viewed from a direction intersecting the mounting surface. Current sensor.
  6. 　貫通孔を有したセンサー本体部を、ベース部の装着面に実装する工程と、
    　前記センサー本体部の前記貫通孔に導体を貫通させる工程と、
    　前記ベース部を、取付対象物の取付面に対して、前記取付面と交差する方向から装着する工程と、
    を含む電流センサーの取り付け方法。     Mounting the sensor body portion having the through hole on the mounting surface of the base portion;
    Passing a conductor through the through hole of the sensor main body,
    Attaching the base portion to the attachment surface of the attachment object from a direction intersecting the attachment surface;
    How to install a current sensor including
PCT/JP2019/018550 2018-05-11 2019-05-09 Current sensor, and method for attaching current sensor WO2019216374A1 (en)

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JP2018092322A JP2019197024A (en) 2018-05-11 2018-05-11 Current sensor, and attachment method of the same
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06335118A (en) * 1993-05-24 1994-12-02 Toyota Autom Loom Works Ltd Power module
JP3173223B2 (en) * 1993-05-18 2001-06-04 株式会社豊田自動織機製作所 Sensor direct connection type module
JP2004020460A (en) * 2002-06-19 2004-01-22 Tdk Corp Overcurrent sensor
US20120001645A1 (en) * 2010-06-30 2012-01-05 Abb Technology Ag Combined electrical variable detection device
JP2016208611A (en) * 2015-04-20 2016-12-08 日東工業株式会社 Power distribution panel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3173223B2 (en) * 1993-05-18 2001-06-04 株式会社豊田自動織機製作所 Sensor direct connection type module
JPH06335118A (en) * 1993-05-24 1994-12-02 Toyota Autom Loom Works Ltd Power module
JP2004020460A (en) * 2002-06-19 2004-01-22 Tdk Corp Overcurrent sensor
US20120001645A1 (en) * 2010-06-30 2012-01-05 Abb Technology Ag Combined electrical variable detection device
JP2016208611A (en) * 2015-04-20 2016-12-08 日東工業株式会社 Power distribution panel

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