JP2024035466A - Electric component - Google Patents

Abstract

To provide an electric component, such as a terminal block, which can inhibit peeling of an inner sealing member.SOLUTION: An electric component 2 includes a partition member 10 which partitions spaces 4, 5 from each other. An arrangement member 20 penetrates through a through hole 11a penetrating through the partition member 10. An inner sealing member 30 is adhered to the arrangement member 20 and a hole wall of the through hole 11a to seal the through hole 11a. An outer sealing member 40 is attached to the partition member 10 or a case 3 so as to seal a border between the case 3 attached with the partition member 10 and the partition member 10. A positioning member 50 positions the arrangement member 20 relative to the case 3 or the partition member 10.SELECTED DRAWING: Figure 3

Description

TECHNICAL FIELD The present invention relates to electrical components, and for example, to a terminal block for a motor.

The motor has a case that covers a drive mechanism such as a rotor. Oil such as lubricating oil is stored inside the case. The stored oil is scraped up as the rotor or the like rotates and scatters inside the case in the form of mist or vaporization. This allows the inside of the case to be cooled. The opening of the case is closed by a partition member. The partition member is required to have the function of sealing oil leakage due to internal pressure and osmosis while also providing electrical connection. For example, as disclosed in Patent Document 1, a partition member (housing) covers the outer periphery of the opening from above. An outer sealing member (packing) is provided on the lower surface of the partition member and comes into contact with the upper surface around the opening of the case. This seals the case and the partition member. Three through holes into which the terminals are inserted are formed in the partition member. The through hole is sealed with an inner sealing member such as packing with the terminal passing through the through hole. The inner end of the terminal is connected to the drive mechanism, and the outer end is connected to an external power source. The housing is covered by a top cover, and both ends of the top cover are attached to the case.

Patent No. 5230488

When assembling the motor with an external power source, the routing member (bus bar) may be pulled due to variations in the arrangement of the rigid external cable. At that time, the arrangement member is displaced relative to the partition member (housing). The inner sealing member that fills the hole wall of the through-hole of the partition member and the routing member may be sealed and held using, for example, a potting material. In this case, there was a risk that the potting material would peel off. Therefore, there has been a need for electrical components such as terminal blocks that can suppress peeling of the inner sealing member.

In one feature of the present disclosure, the electrical component includes a partition member that partitions a space. The wiring member passes through a through hole that passes through the partition member. The inner sealing member is bonded to the wiring member and the hole wall of the through hole to seal the through hole. The outer sealing member is attached to the partition member or the case so as to seal the boundary between the case to which the partition member is attached and the partition member. The positioning member positions the wiring member with respect to the case or the partition member.

Therefore, even if the wiring member receives external force, peeling of the inner sealing member can be suppressed. For example, when assembling the outer end of the routing member with an external power source, the routing member may be pulled. Even in this case, the force applied to the wiring member is transmitted to the case or the partition member via the positioning member. Therefore, a displacement force that causes the wiring member to displace with respect to the partition member is not generated or is suppressed. This makes it difficult for force to be applied to the inner sealing member provided between the wiring member and the partition member, and it is possible to suppress the inner sealing member from peeling off from the wiring member or the partition member.

In another feature of the present disclosure, the positioning member includes an engaging claw that engages with the wiring member and a fixing portion that is fixed to the case. Therefore, when an external force is applied to the wiring member, the external force is reliably transmitted to the case via the positioning member.

In another feature of the present disclosure, the positioning member restricts movement of the wiring member in both directions of passing through the through hole. Therefore, the external force applied to the wiring member can be more reliably transmitted to the case or the partition member. For example, when assembling the outer end of the routing member with an external power source, the routing member may be pulled or pushed. In either case, the external force is transmitted to the case or partition member via the positioning member. This can prevent the inner sealing member from peeling off from the wiring member or the partition member.

In another feature of the present disclosure, the engaging claw of the positioning member is inserted into the wiring member in a direction substantially perpendicular to the direction in which the wiring member passes through the through hole. Therefore, the positioning member can be easily engaged with the wiring member.

FIG. 2 is a perspective view of the terminal block according to the first embodiment attached to the case. FIG. 2 is an exploded perspective view of FIG. 1; 2 is a sectional view taken along line III-III in FIG. 1. FIG. It is a perspective view of the state where the terminal block concerning a 2nd embodiment was attached to a case. FIG. 5 is an exploded perspective view of FIG. 4; 5 is a sectional view taken along the line VI-VI in FIG. 4. FIG. FIG. 6 is an exploded perspective view corresponding to FIG. 5 of the terminal block according to the third embodiment, showing only the main parts. It is a perspective view of the state where the terminal block concerning a 4th embodiment was attached to a case. FIG. 9 is an exploded perspective view of FIG. 8; 9 is a sectional view taken along line XX in FIG. 8. FIG.

(First embodiment)
A first embodiment will be described with reference to FIGS. 1 to 3. In the following description, up-down, front-back, and left-right directions refer to the up-down, front-back, and left-right directions indicated by arrows in each figure. This is the same in all embodiments.

As shown in FIGS. 1 to 3, a terminal block 2 of a motor 1 (for example, a three-phase motor) according to the first embodiment is attached to a case 3 (motor housing). As shown in FIG. 2, the terminal block 2 includes a partition member 10 that is a housing, three bus bars 20 that are wiring members, a potting material 30 that is an inner sealing member, and an O It includes a ring 40 and a positioning member 50.

As shown in FIG. 2, the partition member 10 includes a partition member main body 11 and three guide bodies 12 extending downward from the lower end of the partition member main body 11, and is integrally molded from a rigid resin member. The partition member main body 11 includes three through holes 11a lined up along the left-right direction. The through hole 11a is a hole that passes through the partition member main body 11 along the vertical direction, and allows insertion of a bus bar 20, which will be described later.

The upper part of the through hole 11a is provided with a step 11b that expands in diameter into a rectangular shape along the front-rear direction and the left-right direction. Therefore, the entrance of the through hole 11a is provided with a concave portion 11c having an enlarged diameter. The outer peripheral surface 11d of the partition member main body 11 is provided with a groove 11e along the circumferential direction. An O-ring 40, which will be described later, is fitted (installed) in the groove 11e.

The guide body 12 is formed into a substantially U-shape including a flat plate-shaped recess 12a and a pair of left and right guides 12b protruding forward from the left and right edges of the recess 12a. The recessed portion 12a includes a rib-shaped convex portion 12c that protrudes forward along the vertical direction. Therefore, the convex portion 12c of the guide body 12 and the pair of left and right guides 12b guide the rear surface and left and right edges of the bus bar 20 inserted into the through hole 11a. Therefore, the bus bar 20 inserted into the through hole 11a can be stabilized. Below the convex portion 12c in the approximately U-shaped internal space of the guide body 12 is provided with a nut accommodating portion 12d capable of accommodating a nut 80, which will be described later.

As shown in FIG. 2, the busbar 20 is a conductive plate-like member, and includes a busbar body 21 and a bent portion 22 formed by bending the upper end of the busbar body 21 toward the front side by approximately 90 degrees. There is. The lower end of the bus bar body 21 is provided with a through hole 21a that penetrates in the front-rear direction (thickness direction). The through hole 21a allows a second bolt 71, which will be described later, to pass through the through hole 21a. The left and right edges of the bus bar body 21 are provided with convex portions 21b that protrude in a direction that moves away from each other.

The front end of the bent portion 22 is provided with a through hole 22a that penetrates in the vertical direction (thickness direction). A third bolt 72, which will be described later, can pass through the through hole 22a. The lower surface of the bent portion 22 is provided with a nut 22b on the same axis as the through hole 22a. The third bolt 72 can be screwed into the nut 22b. As shown in FIG. 3, the bottom surface of the nut 22b (the surface opposite to the side into which the third bolt 72 is inserted) is closed with a space 22c. This can prevent chips (not shown) from falling when the third bolt 72 is screwed into the nut 22b. Further, chips can be received in the space 22c.

As shown in FIG. 2, the O-ring 40 is an elastically deformable sealing material formed in the annular shape of a long hole. As shown in FIG. 3, the surface of the O-ring 40 includes two protrusions 41 located in the vertical direction and a recess 42 located between the two protrusions 41 along the circumferential direction. The outer diameter of the convex portion 41 is slightly larger than the inner diameter of a mounting hole 3a of the case 3, which will be described later.

As shown in FIG. 2, the positioning member 50 has three clamping parts 51 lined up in the left-right direction and a fixing part 52 extending rearward from the lower ends of the three clamping parts 51, and has rigidity. It is integrally molded from a resin member. The clamping portion 51 includes a pair of left and right clamping pieces 51 a that clamp the left and right edges of the busbar body 21 of the busbar 20 . The pair of left and right holding pieces 51a includes recesses 51b into which the left and right protrusions 21b of the bus bar body 21, the left and right edges of which are held by the holding parts 51, can fit.

At the time of this fitting, the upper and lower surfaces of the convex portion 21b of the bus bar body 21 and the upper and lower inner surfaces of the recessed portion 51b of the clamping piece 51a come into contact with each other. A pair of left and right clamping pieces 51a of the central clamping part 51 among the three clamping parts 51 arranged along the left-right direction are provided with engagement claws 51c. The fixing part 52 is a member that attaches (fixes) the positioning member 50 to the case 3 of the motor 1, and includes a pair of left and right collar members 52b that penetrate in the vertical direction (thickness direction). The collar member 52b is capable of passing through a first bolt 70, which will be described later. The axes of the pair of left and right collar members 52b coincide with the axes of a pair of left and right threaded holes 3c of the case 3, which will be described later. The collar member 52b is a cylindrical member made of metal, for example, which is harder than the positioning member body and is capable of abutting against the flange surface of the first bolt 70 and the periphery of the threaded hole 3c so as to withstand the tightening force of the first bolt 70. It is a collar and is incorporated into the positioning member 50 by insert molding. The positioning member 50 with respect to the collar member 52b is preferably formed of an insulating material so as not to conduct electricity to the case 3. However, for example, if the bus bar 20 is insulated with a film, the entire positioning member 50 may be made of a non-insulating material. It may be made of any material.

Next, an example of a procedure for assembling the terminal block 2 of the motor 1 will be described with reference to FIGS. 2 and 3. First, the O-ring 40 is fitted (attached) into the groove 11e of the partition member 10. Next, the nuts 80 are accommodated in the three nut accommodating portions 12d of the partition member 10, respectively. Next, the bus bar 20 is inserted into each of the three through holes 11a of the partition member 10 to pass through them.

At this time, the axis of the nut 80 accommodated in the partition member 10 and the axis of the through hole 21a of the bus bar 20 to be penetrated are aligned. Next, the potting material 30 is filled into the through hole 11a from the recess 11c of the partition member 10 and hardened. As a result, the potting material 30 is adhered to the bus bar 20 and the hole wall of the through hole 11a of the partition member 10, thereby sealing the recess 11c together with the through hole 11a.

Next, the three holding parts 51 of the positioning member 50 grip the left and right edges of the bus bar 20 from the rear to the front of the bus bar 20 (in a direction substantially perpendicular to the direction in which the bus bar 20 passes through the through hole 11a). Perform the work of pinching. Then, each of the engaging claws 51c of the pair of left and right clamping pieces 51a of the central clamping part 51 of the three clamping parts 51 lined up in the left-right direction engages the left and right of the central busbar 20 of the three busbars 20. Engage (sandwich) the edges. That is, the pair of left and right engaging claws 51c of the central holding portion 51 are inserted along the edge of the central bus bar 20 from the rear to the front of the central bus bar 20. At this time, each convex part 21b of the three bus bars 20 is fitted into each concave part 51b of the three holding parts 51 of the positioning member 50. As a result, the positioning member 50 is in a state where it holds the three bus bars 20.

In this held state, as described above, the upper and lower surfaces of the protrusions 21b of the busbar bodies 21 of the three busbars 20 and the upper and lower inner surfaces of the recesses 51b of the clamping pieces 51a are in contact with each other. Therefore, the positioning member 50 restricts the relative movement of the partition member 10 and the three bus bars 20 in the vertical direction. That is, the positioning member 50 positions the three bus bars 20 with respect to the partition member 10 in the vertical direction. In this way, the terminal block 2 of the motor 1 is assembled.

Finally, an example of the procedure for attaching the terminal block 2 of the motor 1 to the case 3 will be explained with reference to FIGS. 1 to 3. In this explanation, case 3 will be explained first. As shown in FIG. 2, the case 3 has a mounting hole 3a corresponding to the partition member main body 11 of the terminal block 2, and a pair of left and right screw holes corresponding to the left and right pair of collar members 52b of the positioning member 50 of the terminal block 2. 3c is formed. The case 3 is made of a metal member.

Further, the case 3 is a box-shaped member that covers a drive mechanism (not shown) such as a rotor of the motor 1, and oil such as lubricating oil is stored inside the case 3. This stored oil is scraped up as the rotor or the like rotates and scatters inside the case 3 in the form of mist or vaporization. Thereby, the inside of the case 3 can be cooled. As shown in Figure 3, the inside of case 3 is an oil layer 4 (a layer in which oil is stored and scattered in the form of mist or vaporization as described above), and the outside of case 3 is an air layer. 5 (atmospheric layer).

Next, an example of a procedure for attaching the terminal block 2 to the case 3 will be explained. First, the partition member main body 11 is inserted from the three guide bodies 12 of the partition member 10 of the terminal block 2 into the mounting hole 3a of the case 3. Then, as already explained, since the outer diameter of the convex part 41 of the O-ring 40 is formed slightly larger than the inner diameter of the mounting hole 3a of the case 3, the convex part 41 of the O-ring 40 fits into the mounting hole 3a. It is pressed against the inner circumferential surface 3b and crushed (see FIG. 3). Therefore, the O-ring 40 seals the boundary between the case 3 and the partition member 10.

Next, the first bolts 70 are inserted into the pair of left and right collar members 52b of the positioning member 50, and the inserted first bolts 70 are screwed into the pair of left and right threaded holes 3c of the case 3. In this way, the terminal block 2 can be attached to the case 3. Thereafter, the second bolts 71 are inserted into each of the crimp terminals 61 of the three inner cables 60 and the through holes 21a of the three bus bars 20 in this order, and the inserted second bolts 71 are screwed into the respective nuts 80. Do the work. The inner cable 60 is a cable connected to the drive mechanism. Thereby, the three inner cables 60 and the three bus bars 20 are electrically connected.

Similarly, insert the third bolts 72 into the crimp terminals 63 of the three outer cables 62 and the through holes 22a of the three bus bars 20 in this order, and screw the inserted third bolts 72 into the respective nuts 22b. Do the work that you want to do. The outer cable 62 is a cable connected to a power source (not shown) such as an inverter. Thereby, the three outer cables 62 and the three bus bars 20 are electrically connected. As a result, the partition member 10 can airtightly or watertightly partition the space (separating two different layers (oil layer 4, air layer 5)) and electrically conduct electricity between the partitioned spaces (two different layers). .

The terminal block 2 according to the first embodiment is configured as described above. According to this configuration, the terminal block 2 includes a partition member 10, three bus bars 20, a potting material 30, an O-ring 40, and a positioning member 50. In the terminal block 2, the positioning member 50 holds the three bus bars 20, and the relative movement of the partition member 10 and the three bus bars 20 in the vertical direction is restricted. That is, the positioning member 50 positions the three bus bars 20 with respect to the partition member 10 in the vertical direction (both directions in which the bus bars 20 penetrate the through holes 11a). Therefore, even if the bus bar 20 receives external force, the potting material 30 can be prevented from peeling off. For example, when assembling the bent portion 22 of the bus bar 20 with an external power source, the bent portion 22 may be pulled. Even in this case, the force applied to the bus bar 20 is transmitted to the case 3 via the positioning member 50. Therefore, the displacement force that causes the bus bar 20 to displace with respect to the partition member 10 is not generated or is suppressed. This makes it difficult for force to be applied to the potting material 30 provided between the bus bar 20 and the partition member 10, and it is possible to suppress the potting material 30 from peeling off from the bus bar 20 or the partition member 10.

Further, according to this configuration, the positioning member 50 includes three clamping parts 51 lined up along the left-right direction, and a fixing part 52 extending rearward from the lower ends of the three clamping parts 51. . The fixing portion 52 attaches (fixes) the positioning member 50 to the case 3 of the motor 1 . Therefore, when an external force is applied to the three bus bars 20, the external force is reliably transmitted to the case 3 via the positioning member 50.

Further, according to this configuration, the positioning member 50 restricts the relative movement of the partition member 10 and the three bus bars 20 in the vertical direction. Therefore, the external force applied to the three bus bars 20 can be transmitted to the case 3 more reliably. For example, when assembling the bent portions 22 of the three bus bars 20 with an external power source, the bent portions 22 may be pulled or pushed. In either case, the external force is transmitted to the case 3 via the positioning member 50. This can prevent the potting material 30 from peeling off from the three bus bars 20 or the positioning member 50.

Further, according to this configuration, the pair of left and right engaging claws 51c of the central holding portion 51 are inserted along the edge of the central bus bar 20 from the rear to the front of the central bus bar 20. Therefore, the positioning member 50 can be easily engaged with the central bus bar 20.

(Second embodiment)
The second embodiment will be described with reference to FIGS. 4 to 6. In the following description, members having the same or equivalent configuration as those described in the first embodiment are designated by the same reference numerals in the drawings, and redundant description will be omitted. This also applies to the third to fourth embodiments described later. Note that in the first embodiment and the fourth embodiment, positioning members corresponding to a plurality of routing members are shown, and in the second and third embodiments, for example, three positioning members corresponding to a single routing member are arranged. Another example is shown below. In other words, the key point is that the positioning member can be made to correspond to one or more arrangement members as appropriate, and also discloses another method for the positioning member to restrict relative movement between the partition member and the arrangement member. It is.

As shown in FIGS. 4 to 6, the terminal block 102 of the second embodiment is also attached to the case 3. As shown in FIG. 5, the terminal block 102 includes three partition members 110 which are housings, three bus bars 20 which are wiring members, a potting material 30 which is an inner sealing member, and an outer sealing member. It includes three O-rings 40 and three wedges 150 that are positioning members.

As shown in FIGS. 5 and 6, the partition member 110 includes a partition member main body 11 and a guide body 12 extending downward from the lower end of the partition member main body 11. As shown in FIGS. The upper part of the partition member main body 11 is provided with a nut accommodating portion 111g that can accommodate the nut 22b. Thereby, the bottom surface of the accommodated nut 22b (the surface opposite to the side into which the third bolt 72 is inserted) can be closed with the space 22c formed in the nut accommodating portion 111g. Therefore, it is possible to prevent chips from falling when the third bolt 72 is screwed into the nut 22b. Further, chips can be received in the space 22c. The partition member main body 11 is provided with a through hole 111f penetrating in the thickness direction (back and forth direction) orthogonally to the through hole 11a at the front and rear of the substantially central portion. A substantially central portion of the busbar body 21 of the busbar 20 is provided with a through hole 123 that penetrates in the front-rear direction (thickness direction). The through hole 111f of the partition member main body 11 and the through hole 123 of the bus bar 20 are capable of inserting a shaft portion 151 of a wedge 150, which will be described later.

The wedge 150 includes a round shaft portion 151 and a head portion 152 in which the base end of the shaft portion 151 protrudes in the radial direction. The outer diameter of the shaft portion 151 is set to be the same as or slightly smaller than the inner diameter of the through hole 111f of the partition member main body 11 and the through hole 123 of the bus bar 20. Therefore, when the shaft portion 151 of the wedge 150 is inserted into the through hole 111f of the partition member main body 11 and the through hole 123 of the bus bar 20 with the bus bar 20 inserted into the through hole 11a of the partition member 110, the partition member main body 11 penetrates. Each inner circumferential surface of the hole 111f, the inner circumferential surface of the through hole 123 of the bus bar 20, and the outer circumferential surface of the shaft portion 151 of the wedge 150 abut each other. Note that if a part of the wedge 150 in FIG. 6 is made of insulating material between the bus bar 20 and the mounting hole 3a of the case 3, even if the wedge 150 and the inner circumferential surface of the mounting hole 3a come close to each other, , it is possible to prevent electricity from being passed from the bus bar 20 to the case 3 via the wedge 150. However, if the creepage distance and spatial distance between the wedge 150 and the case 3 can be sufficiently secured (not shown), the wedge 150 may be made of a non-insulating material.

Next, an example of a procedure for assembling the terminal block 102 of the motor 1 will be described with reference to FIGS. 5 and 6. First, the O-rings 40 are fitted (attached) into the grooves 11e of the three partition members 110, respectively. Next, the nut 80 is accommodated in each of the nut accommodating portions 12d of the three partition members 110. Next, the nut 22b is accommodated in each of the nut accommodating portions 111g of the three partition members 110. Next, the bus bar 20 is inserted into each of the through holes 11a of the three partition members 110 to pass through them.

Next, the shaft portion 151 is inserted into the front through holes 111f of the three partition members 110, the through holes 123 of the three bus bars 20, and the rear through holes 111f in this order until the head 152 of the wedge 150 reaches the shaft portion 151. Insert and penetrate each. In this penetrating state, as described above, the inner circumferential surface of each through hole 111f of the partition member main body 11, the inner circumferential surface of the through hole 123 of the bus bar 20, and the outer circumferential surface of the shaft portion 151 of the wedge 150 are in contact with each other. are in contact with each other. Therefore, the wedge 150 restricts the relative movement of the partition member 110 and the bus bar 20 in the vertical direction. That is, the wedge 150 positions the bus bar 20 with respect to the partition member 110 in the vertical direction.

Note that when the shaft portion 151 of the wedge 150 is penetrated as described above, the axis of the nut 80 housed in the partition member 110 and the axis of the through hole 21a of the bus bar 20 penetrated therein coincide with each other. Next, the potting material 30 is filled into the through holes 11a from the respective recesses 11c of the three partition members 110 and hardened. As a result, the potting material 30 is adhered to the bus bar 20 and the hole wall of the through hole 11a of the partition member 110, thereby sealing the recess 11c together with the through hole 11a. In this way, the terminal block 102 of the motor 1 is assembled.

The terminal block 102 of the motor 1 assembled in this manner can also be attached to the case 3 in the same manner as the terminal block 2 already described. In the second embodiment, the case 3 has three threaded holes 3d formed side by side in the left-right direction instead of the threaded holes 3c formed in a pair on the left and right. The first bolt 70 can also be screwed into this threaded hole 3d similarly to the threaded hole 3c.

The terminal block 102 according to the second embodiment is configured as described above. According to this configuration, the terminal block 102 includes three partition members 110, three bus bars 20, a potting material 30, three O-rings 40, and three wedges 150. In the terminal block 102, the partition member 110 holds the bus bar 20 by the wedge 150, and relative movement of the partition member 110 and the bus bar 20 in the vertical direction is restricted. That is, the wedge 150 positions the bus bar 20 with respect to the partition member 110 in the vertical direction. Therefore, this terminal block 102 can also provide the same effects as the terminal block 2. Therefore, even if the bus bar 20 receives external force, the potting material 30 can be prevented from peeling off. For example, when assembling the bent portion 22 of the bus bar 20 with an external power source, the bent portion 22 may be pulled. Even in this case, the force applied to the bus bar 20 is transmitted to each partition member 110 via each wedge 150. Therefore, the displacement force that causes the bus bar 20 to displace with respect to each partition member 110 is not generated or is suppressed. This makes it difficult for force to be applied to the potting material 30 provided between the bus bar 20 and each partition member 110, and it is possible to suppress peeling of the potting material 30 from the bus bar 20 or each partition member 110.

(Third embodiment)
A third embodiment will be described with reference to FIG. The terminal block 202 of the third embodiment is in a form that prevents the inserted positioning member from coming off, compared to the terminal block 102 of the second embodiment already described. Therefore, FIG. 7 shows only the main parts. As shown in FIG. 7, the terminal block 202 includes three partition members 210 that are housings, three bus bars 20 that are wiring members, and potting material 30 (not shown) that is an inner sealing member. It includes three O-rings 40 (not shown) that are outer sealing members and three clips 250 that are positioning members.

As shown in FIG. 7, the partition member main body 11 of the partition member 210 includes a pair of left and right through holes 211f instead of the through hole 111f. The left and right edges of the bus bar main body 21 of the bus bar 20 are provided with notched grooves 224 that are recessed in a direction in which they approach each other instead of the through holes 123. The clip 250 includes a pair of left and right shafts 251 that are elastically deformable, and a head 252 that bridges the base ends of both shafts 251 . The outer diameter of both shaft portions 251 is set to be the same as or slightly smaller than the inner diameter of the through hole 211f of the partition member main body 11 and the notch dimension formed by each inner wall of the notch groove 224 of the bus bar 20. The tip of the shaft portion 251 is provided with an engaging claw 251a. The engagement claw 251a is capable of engaging the edge of the through hole 211f on the rear side of the partition member main body 11 of the partition member 210. Note that, similarly to the second embodiment, it is preferable that the clip 250 is partially made of an insulating material, but if a sufficient creepage distance and spatial distance can be secured (not shown), a non-insulating material may be used. good.

Therefore, when the shaft portion 251 of the clip 250 is inserted into the through hole 211f of the partition member main body 11 and the notch groove 224 of the bus bar 20 with the bus bar 20 inserted into the through hole 11a (not shown) of the partition member 210, the partition member Each inner surface of the through hole 211f of the main body 11, the inner surface of the notch groove 224 of the bus bar 20, and the outer surface of both shaft portions 251 of the clip 250 abut each other. Furthermore, the clip 250 is prevented from falling off due to the engagement between the engaging claw 251a and the through hole 211f.

Next, an example of a procedure for assembling the terminal block 202 of the motor 1 will be described with reference to FIG. First, the O-rings 40 (not shown) are fitted (attached) into the grooves 11e of the three partition members 210, respectively. Next, the nut 80 (not shown) is accommodated in each of the nut accommodating portions 12d of the three partition members 210. Next, the nut 22b (not shown) is accommodated in each of the nut accommodating portions 111g of the three partition members 210. Next, the bus bar 20 is inserted into each of the through holes 11a of the three partition members 210 to pass through them.

Next, the head 252 of the clip 250 is inserted into the front left and right through holes 211f of the three partition members 210, the left and right notch grooves 224 of the three bus bars 20, and the rear left and right through holes 211f in this order. The work of inserting and penetrating both shaft portions 251 is performed until the end is reached. In this penetrating state, as described above, the inner surface of each through hole 211f of the partition member main body 11, the inner surface of the notch groove 224 of the bus bar 20, and the outer surface of both shaft portions 251 of the clip 250 are in contact with each other.

Therefore, the clip 250 restricts the relative movement of the partition member 210 and the bus bar 20 in the vertical direction. That is, the clip 250 positions the bus bar 20 with respect to the partition member 210 in the vertical direction. Further, in this penetrated state, the engaging claw 251a engages the hole edge of the through hole 211f on the rear side of the partition member main body 11 of the partition member 210. Therefore, the inserted clip 250 is prevented from coming off.

Note that when both shaft portions 251 of the clip 250 are penetrated as described above, the axis of the nut 80 accommodated in the nut accommodating portion 12d of the partition member 210 coincides with the axis of the through hole 21a of the bus bar 20 passed through. do. Next, the potting material 30 is filled into the through holes 11a from the respective recesses 11c of the three partition members 210 and hardened. As a result, the potting material 30 is adhered to the bus bar 20 and the hole wall of the through hole 11a of the partition member 210, thereby sealing the recess 11c together with the through hole 11a. In this way, the terminal block 202 of the motor 1 is assembled.

The terminal block 202 of the motor 1 assembled in this way can also be attached to the case 3 in the same manner as the terminal block 2 already described.

The terminal block 202 according to the third embodiment is configured as described above. According to this configuration, the terminal block 202 includes three partition members 210, three bus bars 20, a potting material 30, three O-rings 40, and three clips 250. In the terminal block 202, the partition member 210 holds the bus bar 20 by the clip 250, and relative movement of the partition member 210 and the bus bar 20 in the vertical direction is restricted. That is, the clip 250 positions the bus bar 20 with respect to the partition member 210 in the vertical direction. Therefore, this terminal block 202 can also provide the same effects as the terminal block 102. Therefore, even if the bus bar 20 receives external force, the potting material 30 can be prevented from peeling off. For example, when assembling the bent portion 22 of the bus bar 20 with an external power source, the bent portion 22 may be pulled. Even in this case, the force applied to the bus bar 20 is transmitted to each partition member 210 via each clip 250. Therefore, the displacement force that causes the bus bar 20 to displace with respect to each partition member 210 is not generated or is suppressed. This makes it difficult for force to be applied to the potting material 30 provided between the bus bar 20 and each partition member 210, and it is possible to suppress peeling of the potting material 30 from the bus bar 20 or each partition member 210.

(Fourth example)
The fourth embodiment will be described with reference to FIGS. 8 to 10. As shown in FIGS. 8 to 10, the terminal block 302 of the fourth embodiment is also attached to the case 3. As shown in FIG. 9, the terminal block 302 includes a partition member 310 as a housing, six bus bars 20 as a wiring member, a potting material 30 as an inner sealing member, and a surface as an outer sealing member. It includes a seal 340 and a cover 350 that is a positioning member.

As shown in FIGS. 9 and 10, the partition member 310 includes a partition member main body 11 and six guide bodies 12 extending downward from the lower end of the partition member main body 11. The partition member main body 11 is formed by integrally molding, for example, a metal plate 360 extending in the outer circumferential direction and having a through hole 52a and a main portion including the guide body 12. The partition member main body 11 includes six through holes 11a arranged in the left-right direction. The left and right ends of the partition member main body 11 are provided with engaging portions 311h in pairs on the left and right. The engaging portion 311h includes an engaging hole 311i that can engage an engaging claw 351a of a cover 350, which will be described later.

As shown in FIG. 9, the cover 350 includes a holding part 352 extending in the left-right direction and leg parts 351 extending downward from both ends of the holding part 352. The lower end of the leg portion 351 is provided with an engaging claw 351a. The inner surface (lower surface) of the holding portion 352 includes six protrusions 352a corresponding to the six bus bars 20. For example, the protrusion 352a of the cover 350 may be partially formed of an insulating material, or the entire cover 350 may be formed of an insulating material.For example, when the bus bar 20 is insulated with a film, may be entirely formed of a non-insulating material.

Next, an example of a procedure for assembling the terminal block 302 of the motor 1 will be described with reference to FIGS. 9 and 10. First, the surface seal 340 is attached to the lower surface of the partition member 310. Next, the nut 80 is accommodated in each of the six nut accommodating portions 12d of the partition member 310. Next, the six nut accommodating portions 111g of the partition member 310 accommodate the nuts 22b, respectively. Next, the bus bar 20 is inserted into each of the six through holes 11a of the partition member 310 to penetrate therethrough.

At this time, the axis of the nut 80 accommodated in the partition member 310 and the axis of the through hole 21a of the bus bar 20 to be penetrated are aligned. Next, the potting material 30 is filled into the through hole 11a from the recess 11c of the partition member 310 and hardened. As a result, the potting material 30 is adhered to the bus bar 20 and the hole wall of the through hole 11a of the partition member 10, thereby sealing the recess 11c together with the through hole 11a.

Next, the engaging claws 351a of the cover 350 are engaged with the engaging holes 311i of the engaging portions 311h of the partition member 310 from above to below the bus bar 20. Thereby, the cover 350 can be assembled to the partition member 310. In this assembled state, the six protrusions 352a of the holding portion 352 of the cover 350 and the respective bent portions 22 of the six bus bars 20 are in contact with each other. Therefore, the cover 350 restricts the relative movement of the partition member 310 and the six bus bars 20 in the upward direction. That is, the cover 350 positions the six bus bars 20 upward with respect to the partition member 310. In this way, the terminal block 302 of the motor 1 is assembled.

Finally, an example of the procedure for attaching the terminal block 302 of the motor 1 to the case 3 will be described with reference to FIGS. 8 to 10. First, the partition member body 11 is inserted into the mounting hole 3a of the case 3 from the six guide bodies 12 of the partition member 310 of the terminal block 302. Then, the face seal 340 seals the case 3 and the partition member 310.

Next, the first bolts 70 are inserted into each through hole 52a of the partition member 310, and the inserted first bolts 70 are screwed into each threaded hole 3c of the case 3. In this way, the terminal block 302 can be attached to the case 3. Thereafter, the second bolts 71 are inserted into each of the crimp terminals 61 of the six inner cables 60 and the through holes 21a of the six bus bars 20 in this order, and the inserted second bolts 71 are screwed into the respective nuts 80. do the work. Thereby, the six inner cables 60 and the six bus bars 20 are electrically connected.

Similarly, insert the third bolts 72 into each of the crimp terminals 63 of the six outer cables 62 and the through holes 22a of the six bus bars 20 in this order, and screw the inserted third bolts 72 into the respective nuts 22b. Do the work that you want to do. Thereby, the six outer cables 62 and the six bus bars 20 are electrically connected.

The terminal block 302 according to the fourth embodiment is configured as described above. According to this configuration, the terminal block 302 includes a partition member 310, six bus bars 20, a potting material 30, a surface seal 340, and a cover 350. In the terminal block 302, a cover 350 restricts relative movement of the partition member 310 and the bus bar 20 in a direction in which they move away from each other. That is, the cover 350 positions the bus bar 20 upward with respect to the partition member 310. Therefore, this terminal block 302 can also provide the same effects as the terminal block 2. Therefore, even if the six bus bars 20 are subjected to external force, peeling of the potting material 30 can be suppressed. For example, when electrically connecting the bent portions 22 of the six bus bars 20 to an external power source, the bent portions 22 may be pulled. Even in this case, the force applied to the six bus bars 20 is transmitted to the partition member 310 via the cover 350. Therefore, the displacement force that causes the six bus bars 20 to displace with respect to the partition member 310 is not generated or is suppressed. This makes it difficult to apply force to the potting material 30 provided between the six bus bars 20 and the partition member 310, and it is possible to suppress the potting material 30 from peeling off from the six bus bars 20 or the partition member 310.

Although the first to fourth embodiments have been described with reference to the above structure, it is clear to those skilled in the art that many substitutions, improvements, and changes can be made without departing from the purpose of the present invention. . Accordingly, the first to second embodiments may include all alterations, improvements, and modifications that do not depart from the spirit and purpose of the appended claims. For example, the first to fourth embodiments are not limited to any particular structure, and can be modified as described below.

As mentioned above, the terminal blocks 2, 102, 202, and 302 of the motor 1 have been described as electrical components. The electrical component is not limited to this, and may be any terminal block of a component used in a vehicle (automobile component). As described above, two different layers (oil layer 4, air layer 5) have been described as spaces airtightly or watertightly partitioned by the partition member. The present invention is not limited to this, and the two different layers may be any two of the oil layer 4, the water layer, the gas layer 5, etc.

As mentioned above, the bus bar 20 has been described as a wiring member. The wiring member is not limited to this, and may be any electrically conductive member such as a wire harness or a braided wire. Furthermore, three or six bus bars 20 have been described. The present invention is not limited to this, and the number of bus bars 20 may be any number (single or plural). As mentioned above, the potting material 30 has been described as the inner sealing member. The present invention is not limited to this, and the inner sealing member may be made of any type of adhesive.

As mentioned above, the O-ring 40 has been described as the outer sealing member. The present invention is not limited to this, and the outer sealing member may be any type of sealing material. As described above, the positioning member 50 has been described as having three clamping parts 51 arranged along the left-right direction (first embodiment). However, the present invention is not limited to this, and the positioning member 50 may include one holding portion 51. In that case, three positioning members 50 are provided.

As described above, the terminal block 102 has been described as having three partition members 110 (second embodiment). The present invention is not limited to this, and the terminal block 102 may include one partition member 110. In that case, as in the first embodiment, the terminal block 102 includes one partition member body 11 and three guide bodies 12 extending downward from the lower end of the partition member body 11. This also applies to the third embodiment. As mentioned above, case 3 described the motor housing. The case 3 is not limited to this, and the case 3 may be a lid member.

As described above, the means for regulating the relative movement of the bus bar 20 in the insertion direction by the positioning member 50, the wedge 150, the clip 250, and the cover 350 has been described. On the other hand, for example, when there is a large dimensional difference between the through hole 11a and the bus bar 20, by positioning the dimensions related to movement restriction in consideration not only in the vertical direction but also in the front and back directions, it is possible to It is also possible to restrict relative movement against the force of . For example, in the first embodiment, when applying the aspect of the engaging claw 51c to the gripping piece 51a to engage the left and right edges of the bus bar 20, by adjusting the clearance not only in the left and right direction but also in the front and back direction, Needless to say, relative movement can be suppressed. By this means, it is possible to suppress the potting material 30 from being peeled off not only in the vertical direction but also in the front-back direction. Note that in the first embodiment, the convex portions 21b projecting in the direction away from each other are shown, but instead of this, notch grooves 224 are provided in the direction toward each other, and the shape of the positioning member side corresponding to the notch grooves is adopted. It is also possible to restrict movement.

As described above, an example has been described in which the O-ring 40 is fitted into the groove 11e of the partition member 10 and the O-ring 40 seals the case 3 and the partition member 10. On the contrary, the O-ring 40 may be attached to the case 3 and the O-ring 40 may seal the case 3 and the partition member 10.

As described above, the partition member 10 and the positioning member 50 are made of rigid resin members. That is, the partitioning member 10 and the positioning member 50 have been described as being made of insulating members. However, the present invention is not limited to this, and the partition member 10 and the positioning member 50 may be made of a rigid metal member. In that case, it is necessary to provide an insulating member or form to a portion that contacts or is close to the adjacent member so that there is no electrical conduction between the adjacent members.

2 Terminal block (electrical parts)
3 Case 4 Oil layer (space)
5 Air layer (space)
10 Partition member 11a Through hole 20 Bus bar (routing member)
30 Potting material (inner sealing member)
40 O-ring (outer sealing member)
50 Positioning member

Claims (4)

An electrical component,
A partition member that partitions the space,
a wiring member that passes through a through hole that passes through the partition member;
an inner sealing member that is adhered to the wiring member and the hole wall of the through hole to seal the through hole;
an outer sealing member attached to the partition member or the case so as to seal a boundary between the case to which the partition member is attached and the partition member;
An electrical component including a positioning member that positions the wiring member with respect to the case or the partition member. The electrical component according to claim 1,
The positioning member is an electrical component including an engaging claw that engages with the wiring member and a fixing portion that is fixed to the case. The electrical component according to claim 1 or 2,
The positioning member is an electrical component that restricts movement of the wiring member in both directions of passing through the through hole. The electrical component according to claim 2,
The engaging claw of the positioning member is an electrical component that is inserted into the wiring member in a direction substantially perpendicular to the direction in which the wiring member passes through the through hole.

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