JP2019146285A - Electrical member fastening structure and electrical connection box - Google Patents

Abstract

To appropriately perform fastening while suppressing the number of components.SOLUTION: There are provided a bolt 60 comprising a fixed part 30 for forming a screw hole 36, a shaft part 62 inserted into the screw hole 36 and engaged with the fixed part 30, and a head part 61 provided on one end side of the shaft part 62; and a connection terminal insertion hole 52 for inserting the shaft part 62 of bolt 60. There are provided a connection terminal 50 arranged between the head part 61 of the bolt 60 and the fixed part 30, a bus bar insertion hole 41 for inserting the shaft part 62 of the bolt 60 while constituting an electrical circuit, and an energizing part 42 provided to be elastically deformable to apply energizing force to the connection terminal 50. There is provided a bus bar 40 fastened to the connection terminal 50 by arranging the energizing part 42 between the head part 61 of the bolt 60 and the fixed part 30 side-by-side with connection terminal 50 in a direction allowing coming into contact with the connection terminal 50, and by being engaged with the fixed part 30 when the shaft part 62 of the bolt 60 inserts the connection terminal insertion hole 52 and the bus bar insertion hole 41.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an electrical member fastening structure and an electrical junction box.

  As a structure for joining the plate-like members that can be energized, the other member is sandwiched between the one member and the fastening member that can be screwed with one member, and the one member and the fastening member are A structure in which plate-like members are fastened together by screwing is used more than ever. For example, in Patent Document 1, the bus bar and the electric wire terminal are fastened by sandwiching the electric wire terminal between the fastening member formed with the end side protruding screw portion and the bus bar and screwing the fastening member into the bus bar. ing. Moreover, in patent document 1, the dispersion | variation in the fastening force of the electric wire terminal and bus bar by a fastening member is reduced by arrange | positioning a spring washer and a holding plate between the head of a fastening member and an electric wire terminal. .

JP 2013-105670 A

  However, when a spring washer and a holding plate are provided on the fastening member, the number of parts increases accordingly. Further, when the number of parts increases, the number of manufacturing processes is likely to increase, and thus manufacturing may be complicated. For this reason, in the fastening structure of the electric member which fastens the plate-shaped members which can be supplied with electricity, suppression of the number of parts to comprise was desired.

  The present invention has been made in view of the above, and an object thereof is to provide an electrical member fastening structure and an electrical junction box that can be properly fastened while suppressing the number of parts.

  In order to solve the above-described problems and achieve the object, the electric member fastening structure according to the present invention includes a fixing portion in which a locking hole is formed, and the locking hole is inserted into the locking hole and locked to the fixing portion. A fastening member having a shaft portion and a head portion provided on one end side of the shaft portion; a conductive member insertion hole through which the shaft portion of the fastening member is inserted; and the head portion and the fixed portion of the fastening member A conductive member disposed between the first and second portions, an electric circuit, a bus bar insertion hole through which the shaft portion of the fastening member is inserted, and an elastically deformable biasing force applied to the conductive member An urging portion for providing the urging portion, and the urging portion is disposed alongside the conductive member in a direction in which the urging portion can contact the conductive member between the head portion of the fastening member and the fixing portion, The shaft portion of the fastening member is inserted through the conductive member insertion hole and the bus bar insertion hole. By being engaged with the serial fixing portion, characterized in that it comprises a bus bar to be fastened to the conductive member.

  Moreover, the said electrical member fastening structure WHEREIN: It is preferable that the said urging | biasing part is comprised as a shape by which a part of said bus bar was bent.

  In the electric member fastening structure, it is preferable that the locking hole is formed by a screw hole, and the shaft portion of the fastening member is locked to the fixing portion by being screwed into the screw hole.

  In the electric member fastening structure, the bus bar is preferably disposed between the conductive member and the fixing portion.

  In order to solve the above-described problems and achieve the object, an electrical junction box according to the present invention includes a fixing portion in which a locking hole is formed and a locking portion inserted into the locking hole and locked in the fixing portion. A fastening member having a head portion provided on one end side of the shaft portion, a conductive member insertion hole through which the shaft portion of the fastening member is inserted, and the head portion of the fastening member and the head A conductive member disposed between the fixing portion, an electric circuit, a bus bar insertion hole through which the shaft portion of the fastening member is inserted, and an elastically deformable and attached to the conductive member. An urging portion for applying a force, and the urging portion is disposed between the head portion of the fastening member and the fixing portion so as to be in contact with the conductive member and in parallel with the conductive member. The shaft portion of the fastening member is inserted through the conductive member insertion hole and the bus bar insertion hole. A bus bar fastened to the conductive member by being locked to the fixing portion, an electronic component having a terminal portion that can be energized, and a block that holds the electronic component and is provided with the fixing portion. A terminal portion insertion hole through which the shaft portion of the fastening member can be inserted is formed in the terminal portion of the electronic component, and the terminal portion of the fastening member is aligned with the bus bar and the conductive member. The fastening member is disposed between the head and the fixing portion, and the fastening member is locked to the fixing portion by inserting the shaft portion into the terminal portion insertion hole together with the conductive member insertion hole and the bus bar insertion hole. Thus, the conductive member, the bus bar, and the terminal portion are fastened.

  The electrical member fastening structure and the electrical junction box according to the present invention are provided by providing a biasing portion on the bus bar, and arranging and fastening the bus bar and the conductive member side by side so that the biasing portion can contact the conductive member. Can be fastened in a state in which urging forces are applied to each other. Thereby, the electrical member fastening structure can secure the fastening force of the fastening member and fasten the bus bar and the conductive member without separately using components for securing the fastening force. As a result, there is an effect that the number of parts can be suppressed and fastening can be properly performed.

FIG. 1 is a perspective view of an electrical junction box according to the embodiment. FIG. 2 is an exploded perspective view of the electrical junction box shown in FIG. 3 is a perspective view of the housing shown in FIG. FIG. 4 is a perspective view of the fixing portion shown in FIG. 5 is a cross-sectional view taken along the line AA in FIG. 6 is a cross-sectional view taken along line BB in FIG. FIG. 7 is a perspective view of the bus bar shown in FIG. 8 is a cross-sectional view taken along the line CC of FIG. FIG. 9 is a detail view of a main part in a state before the bus bar and the connection terminal are fastened. FIG. 10 is a detail view of a main part in a state where the connection terminal is brought into contact with the bus bar. FIG. 11 is a detail view of a main part in a state where the bolt is tightened until the head comes into contact. FIG. 12 is a detail view of a main part in a state where the bus bar and the connection terminal are fastened. FIG. 13 is a main part perspective view showing a modification of the electrical junction box according to the embodiment. FIG. 14 is a perspective view of an essential part of the electrical junction box in a state where the clamp shown in FIG. 13 is locked. FIG. 15 is a schematic cross-sectional view of the relevant part showing a fastening state of the clamp shown in FIG.

  Hereinafter, embodiments of an electric member fastening structure and an electric junction box according to the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be replaced by those skilled in the art and can be easily conceived, or those that are substantially the same.

  In the following description, the three directions intersecting each other are referred to as “first direction X”, “second direction Y”, and “third direction Z” for convenience. Here, the first direction X, the second direction Y, and the third direction Z are orthogonal to each other. Typically, the first direction X is an extending direction in which a bus bar described later extends. The second direction Y is the thickness direction of the plates constituting the bus bar, and is the direction orthogonal to the extending direction of the bus bar. The third direction Z is a direction orthogonal to both the extending direction of the bus bar and the thickness direction.

[Embodiment]
FIG. 1 is a perspective view of an electrical junction box 1 according to the embodiment. FIG. 2 is an exploded perspective view of the electrical junction box 1 shown in FIG. The electrical junction box 1 shown in the embodiment is mounted on a vehicle such as an automobile and is incorporated in the wire harness WH. The wire harness WH is, for example, a bundle of a plurality of wiring materials W used for power supply and signal communication for connection between devices mounted on a vehicle, and a plurality of wirings with a connector or the like The material W is connected to each device. The wire harness WH includes a wiring material W having conductivity and an electrical connection box 1 that is electrically connected to the wiring material W. The routing material W is configured by, for example, a metal rod, an electric wire, an electric wire bundle, or the like. The metal rod is obtained by covering the outside of a conductive rod-shaped member with an insulating covering portion. The electric wire is obtained by covering the outside of a conductor portion (core wire) made of a plurality of conductive metal wires with an insulating covering portion. The electric wire bundle is a bundle of the electric wires. The wire harness WH bundles and aggregates a plurality of wiring materials W, and the electrical connection box 1 is electrically connected via a connector or the like provided at a terminal of the bundled wiring materials W. In addition to this, the wire harness WH may further include a grommet, a protector, a fixture, and the like.

  The electrical connection box 1 collects and accommodates electrical components such as connectors, fuses, relays, capacitors, branch parts, and electronic control units. The electrical junction box 1 is installed, for example, in an engine room or a vehicle compartment of the vehicle. The electrical junction box 1 is connected between a power source such as a battery and various electronic devices mounted in the vehicle via a routing member W or the like. The electrical junction box 1 distributes the electric power supplied from the power source to various electronic devices in the vehicle. The electrical junction box 1 may be called a junction box, a fuse box, a relay box, or the like. In the present embodiment, these are collectively called an electrical junction box.

  Specifically, the electrical junction box 1 includes a housing 10, various electronic components 20, and a bus bar 40. The housing 10 accommodates various electronic components 20 inside. The housing 10 has a block 10 </ b> A for holding the electronic component 20 inside. The block 10A is detachably assembled to the housing 10 via various types of locking mechanisms. In the block 10A, the bus bar 40 is provided and the electronic component 20 is assembled and held. The electronic component 20 is an element that exhibits various functions. The electronic component 20 includes a main body portion 21 in which an element that functions as the electronic component 20 is provided, and a terminal portion 25 that is formed to be energized and electrically connected to an external electric circuit. Yes. The main body portion 21 is formed in a substantially rectangular parallelepiped shape, and two terminal portions 25 are provided. The two terminal portions 25 are each formed in a substantially plate shape, extend from the main body portion 21 in the same direction, and are arranged side by side in the plate thickness direction. The electronic component 20 has two terminal portions 25. The two terminal portions 25 are each formed in a substantially plate shape, and are arranged side by side in the plate thickness direction. Terminal portions insertion holes 26 into which shaft portions 62 of bolts 60 provided as fastening members can be inserted are formed in the two terminal portions 25 of the electronic component 20. The bus bar 40 constitutes an electric circuit and is supported by the block 10A. A bus bar insertion hole 41 through which the shaft portion 62 of the bolt 60 is inserted is also formed in the bus bar 40. The bolt 60 provided as a fastening member has a shaft portion 62 in which a helical thread is formed, and a head portion 61 provided on one end side of the shaft portion 62.

  The electrical junction box 1 is accommodated in the housing 10 in a state where the electronic component 20 is held by the block 10 </ b> A, and the bus bar 40 and the routing material W are electrically connected to the electronic component 20. The wiring member W is provided with a connection terminal 50 which is a conductive member made of a metal material at an end portion. The connection terminal 50 includes a connection portion 51 formed in a plate shape and a routing material fixing portion 53 fixed to the routing material W, and the routing material fixing portion 53 is the routing material W. The connection terminal 50 is integrally provided with the wiring member W by being fixed to the wiring member W. Further, the connection portion 51 of the connection terminal 50 is formed with a connection terminal insertion hole 52 that is a conductive member insertion hole through which the shaft portion 62 of the bolt 60 can be inserted.

  The electronic component 20, the bus bar 40, and the routing material W are electrically connected to each other by fastening the terminal portion 25, the bus bar 40, and the connection terminal 50 of the electronic component 20 with the bolt 60 that is a fastening member. The Further, the bolt 60, a fixing portion 30 (see FIG. 3) to be described later, to which the bolt 60 is fixed, the bus bar 40, and the connection terminal 50 constitute an electric member fastening structure 100. 1 and 2, the electrical junction box 1 is illustrated as including one electronic component 20, but the number of the electronic components 20 included in the electrical junction box 1 is not limited to one. In FIG. 1 and FIG. 2, one bus bar 40 is attached to the electrical junction box 1, but a plurality of bus bars 40 may be attached to the electrical junction box 1.

  FIG. 3 is a perspective view of the block 10A shown in FIG. The block 10A is made of an insulating resin material and supports an electronic component holding unit 11 capable of holding the electronic component 20 (see FIG. 2) and a bus bar 40 (see FIG. 2) constituting an electric circuit. 20 and the electrical connection part 15 which electrically connects the bus bar 40 and the like. Of the electronic component holding unit 11 and the electrical connection unit 15, the electronic component holding unit 11 is located on one end side of the block 10 </ b> A in the third direction Z, and the electrical connection unit 15 is the other block 10 </ b> A in the third direction Z. Located on the end side. The electronic component holding part 11 has an opening 12 that opens toward the side opposite to the side where the electrical connection part 15 is located in the third direction Z, and the electronic part holding part 11 has an electronic component inside the electronic part holding part 11. The electronic component 20 can be held by inserting the component 20.

  The electrical connection part 15 is a part that can connect the connection terminal 50 (see FIG. 2) to the bus bar support slit 16 that supports the bus bar 40 and the bus bar 40 that is supported by the bus bar support slit 16. 17. Among these, the bus bar support slit 16 is formed in a slit-like shape extending in the third direction Z with the width direction of the slit being the second direction Y. The width of the bus bar support slit 16 in the second direction Y is approximately the same as the thickness of the bus bar 40 formed in a plate shape.

  The electrical connection portion 15 has bus bar support slits 16 formed on both sides of the block 10A in the first direction X, and the bus bar support slits 16 are a pair of bus bar support formed on both sides of the block 10A in the first direction X. One bus bar 40 can be supported by the slit 16. For this reason, the pair of bus bar support slits 16 that support one bus bar 40 are formed in substantially the same position in the second direction Y. A pair of bus bar support slits 16 are formed in the electrical connecting portion 15 on both sides of the block 10A in the second direction Y, that is, two pairs of bus bar support slits 16 are formed in the block 10A. For this reason, the electrical connection part 15 can support the two bus bars 40.

  The connection terminal connection portions 17 are formed on both sides of the block 10A in the second direction Y corresponding to the two pairs of bus bar support slits 16, respectively. Each connection terminal connection part 17 is directed toward the opposite side of the second direction Y where the other connection terminal connection part 17 is located and the opposite side of the third direction Z where the electronic component holding part 11 is located. , Each is open.

  The block 10 </ b> A is provided with a fixing portion 30 to which a bolt 60 (see FIG. 2) that is a fastening member used for fastening the bus bar 40 supported by the electrical connection portion 15 and the connection terminal 50 is fixed. The fixing part 30 is provided in the connection terminal connection part 17.

  4 is a perspective view of the fixing portion 30 shown in FIG. The fixed part 30 has a cylindrical part 31 formed in a cylindrical shape and a flange part 32 formed on one end side of the cylindrical part 31. The cylindrical portion 31 is formed in a substantially cylindrical shape, and a hole formed through the inside of the cylinder is a locking hole 35 that is a hole for locking and fixing the bolt 60 to the fixing portion 30. It has become. That is, the locking hole 35 is configured by a screw hole 36 that can be screwed with the shaft portion 62 of the bolt 60, and the shaft portion 62 of the bolt 60 is screwed with the screw hole 36 of the fixing portion 30. Thus, it is possible to be locked to the fixing portion 30. The flange portion 32 is formed in a substantially rectangular plate shape, and the cylindrical portion 31 in the extending direction of the central axis is such that the thickness direction is the extending direction of the central axis of the cylindrical portion 31. Is formed on one end side.

  5 is a cross-sectional view taken along the line AA in FIG. 6 is a cross-sectional view taken along line BB in FIG. The block 10A is also provided with two fixing portions 30 corresponding to the two pairs of bus bar support slits 16. The two fixing portions 30 are each held by a fixing portion holding groove 18 formed inside the electrical connection portion 15. The fixing portion holding groove 18 is formed in a groove shape that has a groove width direction in the second direction Y and opens inward of the electrical connection portion 15 in the first direction X. It extends in the three directions Z. The groove width in the second direction Y of the fixed portion holding groove 18 is approximately the same as the plate thickness of the flange portion 32 of the fixed portion 30.

  The electrical connection portion 15 has fixed portion holding grooves 18 formed on both sides of the block 10A in the first direction X, and the fixed portion holding grooves 18 are a pair of blocks formed on both sides of the block 10A in the first direction X. The fixed portion holding groove 18 makes it possible to hold one fixed portion 30. For this reason, the pair of fixing portion holding grooves 18 that hold one fixing portion 30 are formed at substantially the same positions in the second direction Y. Since the pair of fixing portion holding grooves 18 are provided corresponding to the pair of bus bar supporting slits 16, the two pairs of fixing portion holding grooves 18 are formed in the block 10 </ b> A in which the two pairs of bus bar supporting slits 16 are formed. Is formed. As a result, the electrical connection portion 15 can hold the two fixing portions 30. The two pairs of fixing portion holding grooves 18 are disposed between the two pairs of bus bar support slits 16 in the second direction Y.

  In the fixing portion 30, one fixing portion 30 is held by the pair of fixing portion holding grooves 18 by inserting the flange portion 32 into the fixing portion holding groove 18. At this time, the fixed portion 30 has the central axis of the cylindrical portion 31 extending in the second direction Y, and the cylindrical portion 31 is located on the opposite side of the side where the other fixed portion 30 is located with respect to the flange portion 32. Hold in the orientation.

  In addition, an electronic component housing portion 13 that is a space in which the electronic component 20 can be accommodated and the electronic component 20 can be retained is formed inside the electronic component retaining portion 11 in the block 10 </ b> A. The electronic component housing portion 13 is formed in a shape along the shape of the main body portion 21 of the electronic component 20, and can accommodate and hold the electronic component 20.

  On the side opposite to the side where the opening 12 is located in the third direction Z of the electronic component housing portion 13, that is, on the side where the electrical connection portion 15 is located, the terminal portion 25 of the electronic component 20 held by the electronic component housing portion 13. The terminal part insertion slit 14 which can enter is formed. The terminal part insertion slit 14 is formed in two places like the terminal part 25 which the electronic component 20 has. The terminal portion insertion slit 14 has a size that allows the terminal portion 25 of the electronic component 20 to pass therethrough, and is formed as a hole that penetrates between the electronic component housing portion 13 and the electrical connection portion 15. That is, the electronic component housing part 13 and the electrical connection part 15 are communicated with each other by the terminal part insertion slit 14.

  The two terminal portion insertion slits 14 are formed in a positional relationship in which the two terminal portions 25 of the electronic component 20 in the state of being accommodated in the electronic component accommodation portion 13 can pass through the terminal portion insertion slits 14 respectively. Yes. The two terminal portion insertion slits 14 are provided corresponding to the bus bar support slits 16 and the fixed portion holding grooves 18. That is, the two terminal portion insertion slits 14 are arranged in the second direction Y on the side where one pair of bus bar support slits 16 and the pair of fixing portion holding grooves 18 are located, and on the other pair of bus bar support slits 16 and the pair. Are formed on the side where the fixed portion holding groove 18 is located.

  FIG. 7 is a perspective view of the bus bar 40 shown in FIG. 8 is a cross-sectional view taken along the line CC of FIG. The bus bar 40 is formed in a plate shape, and includes a bus bar insertion hole 41 and an urging portion 42 that is provided so as to be elastically deformable and applies an urging force to the connection terminal 50. The bus bar insertion hole 41 is formed as a hole penetrating in the plate thickness direction of the bus bar 40. The urging portion 42 is configured as a shape in which a part of the bus bar 40 is bent. The urging portions 42 are formed on both sides of the bus bar insertion hole 41 in the third direction Z, and are formed so as to protrude in one direction in the plate thickness direction of the bus bar 40 from positions other than the urging portion 42 in the bus bar 40. .

  Specifically, the urging portion 42 has a portion in which both sides in the first direction X are defined by notches 43 formed in two places on both sides of the bus bar insertion hole 41 in the first direction X of the bus bar 40. It is formed by projecting in the plate thickness direction. The notch 43 defining the urging portion 42 penetrates the bus bar 40 in the plate thickness direction, and the length in the third direction Z is shorter than the width of the bus bar 40 in the third direction Z in the third direction. It extends to Z. The urging portion 42 is a portion where the portion between the two notches 43 in the bus bar 40 is between the end portions of both the notches 43 located in the same direction in the third direction Z. It is formed so as to protrude in the plate thickness direction by being bent in a plate thickness direction so as to be elastically deformable. The urging portions 42 are formed at two locations on both sides of the bus bar insertion hole 41 in the third direction Z, and the two urging portions 42 are in the plate pressure direction of the bus bar 40, that is, in the second direction Y. The protruding directions with respect to the portions other than the 40 urging portions 42 are the same direction, and the protruding amount is also the same.

  The electric member fastening structure 100 and the electric junction box 1 according to the present embodiment are configured as described above. Next, a method for fastening the bus bar 40 and the connection terminal 50 by the electric member fastening structure 100 will be described. FIG. 9 is a detail view of a main part in a state before the bus bar 40 and the connection terminal 50 are fastened. When assembling the electrical junction box 1, first, the flange portion 32 of the fixing portion 30 is inserted into the fixing portion holding groove 18 of the block 10 </ b> A, and the electronic component 20 is inserted into the electronic component housing portion 13 while holding the fixing portion 30. To accommodate. At that time, the terminal portion 25 of the electronic component 20 is inserted into the terminal portion insertion slit 14 of the block 10A and is positioned on the electrical connection portion 15 side. Accordingly, the terminal portion 25 of the electronic component 20 is positioned in the vicinity of the fixing portion 30 on the side opposite to the end portion on the side where the flange portion 32 of the fixing portion 30 is located in the second direction Y. The terminal portion insertion hole 26 (see FIG. 2) communicates with the screw hole 36 (see FIG. 4) of the fixing portion 30. Further, in a state where the fixing portion 30 is held by the fixing portion holding groove 18 and the terminal portion 25 of the electronic component 20 is inserted into the terminal portion insertion slit 14, the fixing portion 30 and the terminal portion 25 are in contact with each other or close to each other. The positional relationship is

  The bus bar 40 also enters the bus bar support slit 16 of the block 10 </ b> A so that the bus bar 40 is supported by the bus bar support slit 16. Since the bus bar support slit 16 supports one bus bar 40 by a pair of bus bar support slits 16 having the same position in the second direction Y, the bus bar support slit 16 has an extension direction of the bus bar 40 in the first direction X. The bus bar 40 is supported in such a direction. When the bus bar 40 is supported by the bus bar support slit 16, the bus bar 40 is located on the opposite side of the terminal portion 25 of the electronic component 20 from the side where the fixed portion 30 is located in the second direction Y. . When the bus bar 40 is supported by the bus bar support slit 16, the direction of the side where the urging portion 42 of the bus bar 40 protrudes is opposite to the side where the terminal portion 25 of the electronic component 20 is located in the second direction Y. Support in the protruding direction. As described above, when the terminal portion 25 of the electronic component 20 is inserted into the terminal portion insertion slit 14 and the bus bar 40 is supported by the bus bar support slit 16, the terminal portion 25 and the bus bar 40 are in contact with each other or close to each other. Positional relationship.

  FIG. 10 is a detail view of a main part in a state in which the connection terminal 50 is brought into contact with the bus bar 40. When the connection terminal 50 provided at the end of the routing material W is fastened to the bus bar 40, the connection terminal 50 is connected between the head portion 61 of the bolt 60 and the fixing portion 30, the connection portion 51 being a fastening member. Be arranged. For this reason, when the connection terminal 50 is fastened to the bus bar 40, the connection portion 51 is brought into contact with the biasing portion 42 from the surface side of the bus bar 40 on which the biasing portion 42 projects. At that time, the connection terminal 50 contacts in a positional relationship where the connection terminal insertion hole 52 (see FIG. 2) formed in the connection portion 51 communicates with the bus bar insertion hole 41 (see FIG. 7) formed in the bus bar 40. Let

  Thus, since the connection terminal 50 is brought into contact with the urging portion 42 of the bus bar 40, in other words, the urging portion 42 is connected between the head 61 of the bolt 60 and the fixing portion 30. 50 is arranged side by side with the connection terminal 50 so as to be in contact with the connection terminal 50. That is, the bus bar 40 is disposed between the connection terminal 50 and the fixed portion 30. In addition, the terminal portion 25 of the electronic component 20 located on the opposite side of the bus bar 40 on the side where the connection terminal 50 is disposed is aligned with the bus bar 40 and the connection terminal 50, and the head portion 61 of the bolt 60 and the fixing portion 30. Between the two.

  FIG. 11 is a detail view of a main part in a state in which the bolt 60 is tightened until the head 61 comes into contact. The bolt 60 which is a fastening member inserts the shaft portion 62 of the bolt 60 into the connection terminal insertion hole 52 of the connection terminal 50 from the side opposite to the side where the bus bar 40 is located in the connection terminal 50. The bolt 60 is inserted to the position of the fixing portion 30 through the shaft portion 62 through the bus bar insertion hole 41 of the bus bar 40 and the terminal portion insertion hole 26 of the terminal portion 25 of the electronic component 20. When the shaft portion 62 of the bolt 60 reaches the fixed portion 30, the shaft portion 62 enters the screw hole 36 of the fixed portion 30 while rotating the bolt 60. Thereby, the bolt 60 moves in a direction in which the head 61 approaches the connection terminal 50, and the head 61 contacts the connection terminal 50.

  FIG. 12 is a detail view of a main part in a state where the bus bar 40 and the connection terminal 50 are fastened. The connection terminal 50 has a surface on the side where the head 61 of the bolt 60 comes into contact with the urging portion 42 of the bus bar 40, but continues to rotate the bolt 60 as it is and the shaft portion 62 is screwed into the screw hole of the fixing portion 30. By making it enter 36, the connection terminal 50 approaches while applying a large force to the bus bar 40. That is, by continuing to rotate the bolt 60 in a state where the head 61 of the bolt 60 is in contact with the connection terminal 50, the head 61 of the bolt 60 applies a force in a direction approaching the bus bar 40 to the connection terminal 50. To do.

  As a result, the connection terminal 50 approaches while applying a large force to the bus bar 40, but the urging portion 42 of the bus bar 40 that is in contact with the connection terminal 50 is positioned by the bending of the bus bar 40. It protrudes to the side to be elastically deformable. For this reason, when the connection terminal 50 applies a force in the direction in which the connection terminal 50 approaches the bus bar 40 to the biasing portion 42, the biasing portion 42 is elastically deformed in a direction in which the protruding amount is reduced by the force from the connection terminal 50. .

  The connection terminal 50 approaches a portion of the bus bar 40 other than the urging portion 42 when the urging portion 42 is elastically deformed to reduce the protruding amount. In this way, the urging portion 42 is elastically deformed by continuing to rotate the bolt 60, and the connection terminal 50 is brought close to the portion other than the urging portion 42 in the bus bar 40, so that the connection terminal 50 is connected to the bus bar 40. It contacts a position other than the urging portion 42.

  Since the urging portion 42 of the bus bar 40 has a small protruding amount due to elastic deformation, the urging portion 42 is in a state where the connection terminal 50 is in contact with a position other than the urging portion 42 in the bus bar 40. In this state, an urging force is applied to the connection terminal 50. The force urged from the urging portion 42 of the bus bar 40 to the connection terminal 50 is in the second direction Y in the direction in which the head 61 moves away from the bus bar 40 with respect to the head 61 of the bolt 60 from the connection terminal 50. Acts as a force. For this reason, a force in the second direction Y acts between the screw threads 36 on the shaft portion 62 of the bolt 60 and the screw hole 36 of the fixed portion 30, and this force causes friction between the screw threads. When the force is increased and the bolt 60 is difficult to rotate, the bolt 60 is screwed into the screw hole 36 of the fixing portion 30.

  In this manner, the bolt 60 inserted through the connection terminal insertion hole 52 of the connection terminal 50 and the bus bar insertion hole 41 of the bus bar 40 does not move, so that the bus bar 40 and the connection terminal 50 are fixed in contact with each other. Is done. That is, the connection terminal 50 and the bus bar 40 are electrically connected by the shaft portion 62 of the bolt 60 passing through the connection terminal insertion hole 52 and the bus bar insertion hole 41 and being fixed to the screw hole 36. It is concluded with.

  Further, the terminal part 25 and the bus bar 40 of the electronic component 20 are also fixed to the screw hole 36 by inserting the shaft part 62 of the bolt 60 through the bus bar insertion hole 41 and the terminal part insertion hole 26 of the terminal part 25. Fastened in an electrically connected state. That is, the bolt 60 has the shaft portion 62 inserted into the terminal portion insertion hole 26 together with the connection terminal insertion hole 52 and the bus bar insertion hole 41 and fixed to the screw hole 36, whereby the connection terminal 50, the bus bar 40, and the electronic component 20. The terminal portion 25 is fastened.

  In the electric member fastening structure 100 according to the above embodiment, the urging portion 42 is provided on the bus bar 40, and the bus bar 40 and the connection terminal 50 are arranged side by side and fastened so that the urging portion 42 can contact the connection terminal 50. By doing so, it can fasten in the state which gives urging | biasing force mutually between both. Accordingly, the electric member fastening structure 100 can fasten the bus bar 40 and the connection terminal 50 by suppressing loosening of the bolt 60 and securing an appropriate fastening force without using a separate component for securing the fastening force. Can do. As a result, it is possible to perform proper fastening while suppressing the number of parts.

  That is, the bolt 60 is difficult to rotate due to the force that forces the head 61 away from the bus bar 40 due to the force biased from the biasing portion 42 of the bus bar 40 to the connection terminal 50. The bolt 60 that fastens the bus bar 40 and the connection terminal 50 is not easily loosened. As a result, loosening of the bolt 60 can be suppressed with a small number of parts.

  Moreover, since the urging | biasing part 42 is comprised as a shape where a part of bus bar 40 was bent, the urging | biasing part 42 can be integrally provided in the bus bar 40 with a simple structure. As a result, both suppression of the number of parts and proper fastening can be achieved more easily.

  In addition, the bus bar 40 and the connection terminal 50 are fastened in contact with each other with a large contact load by a force biased from the biasing portion 42 of the bus bar 40 to the connection terminal 50. Thereby, the fastened bus bar 40 and the connection terminal 50 are difficult to be separated from each other, and the electrical conductivity between the two can be ensured. As a result, the electrical conductivity can be more reliably ensured with a small number of parts.

  In addition, the bus bar 40 is arranged side by side with the connection terminal 50 in such a direction that the urging portion 42 can contact the connection terminal 50. And the connection terminal 50 can be fastened. Thereby, fastening force can be ensured, suppressing the fall of workability | operativity at the time of fastening. That is, in the structure in which the portion to which the biasing force is applied contacts the fastening member and directly applies the biasing force to the fastening member, the portion that contacts the fastening member and applies the biasing force when rotating the fastening member. However, there is a possibility that the fastening member may be prevented from rotating. For example, when the contact terminal is formed with an elastic contact piece or provided with a spring washer, and these are in contact with the fastening member with a large pressure, they are in contact with a large pressure. The frictional force between the elastic contact piece or the like and the fastening member at the portion becomes very large. For this reason, it is difficult to rotate the fastening member due to this large frictional force, and a large force is required during the fastening operation, which may make the fastening operation difficult.

  On the other hand, in the electric member fastening structure 100 according to the embodiment, the urging portion 42 of the bus bar 40 formed to generate the urging force is attached without directly contacting the head 61 of the bolt 60. The urging force of the urging portion 42 is transmitted to the head 61 of the bolt 60 through the connection terminal 50. Since the connection terminal 50 is in contact with the head 61 of the bolt 60 on a wide surface, the force that acts on the head 61 acts in a small area, so that the connection terminal 50 is partially contacted with a large pressure. The frictional force when rotating the bolt 60 can be prevented from becoming too large. Thereby, big force is needed at the time of fastening work, and it can control that fastening work becomes difficult. As a result, workability at the time of fastening work can be improved.

  In addition, the bolt 60 is used as a fastening member, and the bolt 60 is fixed to the screw hole 36 by screwing the shaft portion 62 of the bolt 60 into the screw hole 36 of the fixing portion 30, so that a special part is used for the fastening member. Without limitation, a commercially available bolt 60 can be used. Thereby, the process at the time of manufacture of the electric member fastening structure 100 can be decreased. As a result, the manufacturing cost can be reduced.

  Further, since the bus bar 40 is disposed between the connection terminal 50 and the fixing portion 30, the bus bar 40 on which the urging portion 42 is formed can be fastened without directly contacting the bolt 60. Can be ensured. That is, when the bus bar 40 is fastened in direct contact with the bolt 60, the head 61 of the bolt 60 is located on the opposite side of the bus bar 40 where the urging portion 42 is formed, on the side where the urging portion 42 protrudes. Will come into contact with the surface. For this reason, since the head 61 of the bolt 60 has a smaller area in contact with the plane of the bus bar 40, the force acting between the head 61 and the bus bar 40 by the biasing force generated by the biasing portion 42 of the bus bar 40. However, it may become unstable.

  On the other hand, in the electric member fastening structure 100 according to the embodiment, since the head portion 61 of the bolt 60 contacts the connection terminal 50, the head portion 61 and the connection terminal 50 are urged by the urging force generated by the urging portion 42 of the bus bar 40. The force acting between the two can act between wide planes. As a result, the head 61 of the bolt 60 and the connection terminal 50 can be brought into contact with each other without greatly changing the pressure acting between the two depending on the position of contact, and generated by the biasing portion 42 of the bus bar 40. The force generated by the force can be stably applied between the two. As a result, stability at the time of fastening can be ensured, and fastening can be performed more reliably and properly.

  Further, in the electrical junction box 1 according to the embodiment, the fixing portion 30 is provided in the block 10A that holds the electronic component 20, and the bus bar 40 having the biasing portion 42, the connection terminal 50, and the terminal portion 25 of the electronic component 20 are connected. Since it fastens with the volt | bolt 60, it can conclude in the state which gives urging | biasing force mutually. Accordingly, the bus bar 40, the connection terminal 50, and the terminal portion 25 of the electronic component 20 can be fastened by securing the fastening force of the bolt 60 without separately using a component for securing the fastening force. As a result, it is possible to perform proper fastening while suppressing the number of parts.

[Modification]
In the embodiment described above, the bolt 60 is used as the fastening member, but the fastening member may be other than the bolt 60. FIG. 13 is a perspective view of relevant parts showing a modification of the electrical junction box 1 according to the embodiment. FIG. 14 is a perspective view of a main part of the electrical junction box 1 in a state where the clamp 80 shown in FIG. 13 is locked. FIG. 15 is a schematic cross-sectional view of an essential part showing a fastening state of the clamp 80 shown in FIG. As shown in FIGS. 13 to 15, a clamp 80 may be used as a fastening member for fastening the bus bar 40 and the connection terminal 50. The clamp 80 is made of an elastic resin material and has a head portion 81, a shaft portion 82, and a pedestal 86. The pedestal 86 is formed in a substantially disk shape with a hole formed on the inner side, and the shaft portion 82 is passed through the inner hole. The shaft portion 82 is hollow in the radial direction, and a plurality of slits 84 extending in the extending direction of the shaft portion 82 are formed in the shaft portion 82. In other words, the shaft portion 82 has a plurality of portions extending in the extending direction of the shaft portion 82 arranged in a circumferential direction centering on the central axis of the shaft portion 82 while being spaced apart from each other. The part of the space | interval between several site | parts is the slit 84. FIG. In addition, the shaft portion 82 is formed with a locking portion 83 that protrudes outward in the radial direction of the shaft portion 82 at the end opposite to the side where the head portion 81 is located.

  Unlike the embodiment described above, the fixing portion 70 is formed as a part of the member formed inside the block 10 </ b> A as the fixing portion 70. Unlike the embodiment, the locking hole 71 formed in the fixing portion 70 is not formed with a thread but is a circular hole.

  When the bus bar 40 and the connection terminal 50 are fastened using the clamp 80, the terminal portion 25 of the electronic component 20 and the bus bar 40 are overlapped with the fixing portion 70, and the connection terminal 50 is overlapped with the bus bar 40. In this state, the clamp 80 passes the shaft portion 82 through each of the connection terminal insertion hole 52, the bus bar insertion hole 41, the terminal portion insertion hole 26, and the locking hole 71. Note that the bus bar 40 also has an urging portion 42 (see FIG. 7) in this modified example, and the urging portion 42 of the bus bar 40 contacts the connection terminal 50 when the bus bar 40 and the connection terminal 50 are fastened. Arrange them in the same direction.

  The shaft portion 82 of the clamp 80 passes through each hole from the end portion on the side where the locking portion 83 is formed. Since the shaft portion 82 is formed with a plurality of slits 84, the shaft portion 82 is engaged. When the stop portion 83 passes through each hole, the portion between the slits 84 passes while being bent inward in the radial direction of the shaft portion 82. As a result, the shaft portion 82 can also pass through the connection terminal insertion hole 52, the bus bar insertion hole 41, the terminal portion insertion hole 26, and the engagement hole 71, even with the engagement portion 83 protruding outward in the radial direction of the shaft portion 82. it can.

  The shaft portion 82 of the clamp 80 that passes through each hole while the vicinity of the end portion on the side where the locking portion 83 is located returns to its original shape when the locking portion 83 passes through the locking hole 71 of the fixing portion 70. For this reason, the diameter of the locking portion 83 in the radial direction centered on the central axis of the shaft portion 82 is larger than the diameter of the locking hole 71, and the locking portion 83 is connected to the terminal portion 25 or the fixing portion 70. The abutment surface 72 abuts on and engages with an engagement surface 72 that is located on the opposite side of the surface on which the bus bar 40 is disposed. As a result, the clamp 80 cannot move in the direction in which the head 81 is located. Further, in the clamp 80, the distance between the surface of the pedestal 86 on the side opposite to the side where the head 81 is located and the engaging portion 83 is such that the connection terminal 50, the bus bar 40, the terminal portion 25, and the fixing portion 70 are in the second direction. The thickness is about the same as the thickness in the second direction Y when arranged side by side in Y. For this reason, the clamp 80 is held in a state where an urging force is generated when the urging portion 42 of the bus bar 40 is elastically deformed and the connection terminal 50 contacts a portion other than the urging portion 42 in the bus bar 40. The bus bar 40 and the connection terminal 50 can be fastened.

  Even if the fastening member uses the clamp 80 in this manner, the shaft portion 82 can be locked to the fixed portion 70, and the bus bar 40 and the connection terminal 50 can be fastened. Further, by providing the urging portion 42 on the bus bar 40, it is possible to secure a fastening force when the bus bar 40 and the connection terminal 50 are fastened by the clamp 80. Thereby, the number of parts at the time of fastening bus bar 40 and connecting terminal 50 can be controlled, securing fastening power and fastening bus bar 40 and connecting terminal 50 appropriately.

  In the above-described embodiment, the fixing portion 30 is a separate member from the block 10A. However, the fixing portion 30 in which the screw hole 36 is formed is provided integrally with the block 10A as in the above modification. May be.

  In the embodiment described above, the connection member 50 provided at the end of the routing material W is used as the conductive member arranged side by side with the bus bar 40 having the biasing portion 42. Other than the terminal 50 may be used. The conductive member may be, for example, a bus bar different from the bus bar 40 having the urging portion 42. That is, the urging portion 42 may be provided on some of the bus bars 40 among a plurality of bus bars that are arranged side by side and fastened by a fastening member such as a bolt 60. Even in the portion where the bus bars are fastened together, by providing the urging portion 42 in a part of the bus bars 40, the number of parts can be suppressed while securing the fastening force at the time of fastening.

  In the above-described embodiment, the terminal portion 25 of the electronic component 20 is fastened by the bolt 60 in addition to the bus bar 40 and the connection terminal 50, but the configuration of the member fastened by the bolt 60 is other than this. There may be. A configuration of a member that is fastened by a fastening member such as a bolt 60 or a clamp 80 as long as it has at least a bus bar 40 having an urging portion 42 and a conductive member electrically connected to the bus bar 40. Does not matter.

  In the above-described embodiment, the block 10A accommodates and holds one electronic component 20, but a plurality of electronic components may be held by the block 10A. In the above-described embodiment, the block 10A supports one bus bar 40, but a plurality of bus bars 40 supported by the block 10A may be provided. In other words, one electrical junction box 1 may be provided with a plurality of electrical member fastening structures 100.

  Moreover, the electric member fastening structure and the electric junction box according to the above-described embodiment and modification of the present invention are not limited to the above-described embodiment and modification, and various modifications can be made within the scope described in the claims. Is possible. The electric member fastening structure and the electric junction box according to the present embodiment and the modified example may be configured by appropriately combining the constituent elements of the embodiments and the modified examples described above.

DESCRIPTION OF SYMBOLS 1 Electrical junction box 10 Housing | casing 11 Electronic component holding part 13 Electronic component accommodating part 15 Electrical connection part 16 Busbar support slit 18 Fixed part holding groove 20 Electronic part 21 Main body part 25 Terminal part 26 Terminal part insertion hole 30,70 Fixed part 31 Cylindrical portion 32 collar portion 35, 71 locking hole 36 screw hole 40 bus bar 41 bus bar insertion hole 42 biasing portion 50 connection terminal (conductive member)
51 connection part 52 connection terminal insertion hole (conductive member insertion hole)
53 Wiring material fixing part 60 Bolt (fastening member)
61, 81 Head 62, 82 Shaft 72 Locking surface 80 Clamp (fastening member)
83 Locking part 100 Electrical member fastening structure W Wiring material WH Wire harness

Claims (5)

A fixing part in which a locking hole is formed;
A fastening member having a shaft portion that is inserted through the locking hole and locked to the fixed portion, and a head portion provided on one end side of the shaft portion;
A conductive member having a conductive member insertion hole through which the shaft portion of the fastening member is inserted, and disposed between the head portion of the fastening member and the fixing portion;
The fastening device includes an electric circuit, a bus bar insertion hole through which the shaft portion of the fastening member is inserted, and a biasing portion which is provided so as to be elastically deformable and applies a biasing force to the conductive member. The biasing portion is disposed between the head portion of the member and the fixing portion so as to be in contact with the conductive member so as to be in contact with the conductive member, and the shaft portion of the fastening member is the conductive member insertion hole. And a bus bar that is fastened to the conductive member by being inserted into the bus bar insertion hole and locked to the fixing portion,
An electrical member fastening structure comprising:   The electric member fastening structure according to claim 1, wherein the urging portion is configured as a shape in which a part of the bus bar is bent. The locking hole is constituted by a screw hole,
The electric member fastening structure according to claim 1 or 2, wherein the shaft portion of the fastening member is locked to the fixing portion by being screwed into the screw hole.   The electric member fastening structure according to any one of claims 1 to 3, wherein the bus bar is disposed between the conductive member and the fixing portion. A fixing part in which a locking hole is formed;
A fastening member having a shaft portion that is inserted through the locking hole and locked to the fixed portion, and a head portion provided on one end side of the shaft portion;
A conductive member having a conductive member insertion hole through which the shaft portion of the fastening member is inserted, and disposed between the head portion of the fastening member and the fixing portion;
The fastening device includes an electric circuit, a bus bar insertion hole through which the shaft portion of the fastening member is inserted, and a biasing portion which is provided so as to be elastically deformable and applies a biasing force to the conductive member. The biasing portion is disposed between the head portion of the member and the fixing portion so as to be in contact with the conductive member so as to be in contact with the conductive member, and the shaft portion of the fastening member is the conductive member insertion hole. And a bus bar that is fastened to the conductive member by being inserted into the bus bar insertion hole and locked to the fixing portion,
An electronic component having a terminal portion that can be energized;
A block that holds the electronic component and is provided with the fixing portion;
With
A terminal part insertion hole through which the shaft part of the fastening member can be inserted is formed in the terminal part of the electronic component,
The terminal portion is disposed between the head portion of the fastening member and the fixing portion along with the bus bar and the conductive member,
In the fastening member, the shaft portion is inserted into the terminal portion insertion hole together with the conductive member insertion hole and the bus bar insertion hole and locked to the fixing portion, whereby the conductive member, the bus bar, and the terminal portion are An electrical junction box characterized by fastening.