JP6011936B2 - Terminal block peripheral structure - Google Patents

Description

  The present invention relates to a peripheral structure of a terminal block in which a terminal block connected to a stator of a vehicle motor via a stator wiring is arranged around the stator.

  In recent years, environmentally friendly vehicles such as fuel-efficient vehicles, hybrid vehicles, and electric vehicles have become widespread in vehicles such as automobiles. In hybrid vehicles, electric vehicles, and the like, drive motors that drive the traveling wheels during traveling are used. In fuel-efficient vehicles, hybrid vehicles, electric vehicles, and the like, the rotational resistance of the traveling wheels during braking is converted into electric power. A regenerative motor is used. Conventional motors such as a drive motor and a regenerative motor include, for example, a rotor that rotates around a motor rotation axis, a stator that is disposed around the rotor, and a motor that houses the rotor and the stator, as disclosed in Patent Document 1. The stator of the motor is connected to an external device such as an inverter and a cooler outside the motor via a connecting conductor (bus bar) extending linearly. In many cases, the motor is provided with a terminal block that supports the connection conductor, and the connection conductor is fixed to the terminal block by bolt fastening.

JP 2012-170177 A

  However, in the conventional motor, when a sufficient electrical path is secured by the straight connection conductor, the space occupied by the connection conductor is increased, and the motor is increased in size. Since the motor is disposed in the engine room of the vehicle body which is a limited space, it is required to make the motor compact.

  Since the oil is scattered by the rotation of the rotor inside the motor, such oil may adhere to the terminal block. Adhered oil can short circuit adjacent connecting conductors, which is a problem.

  When a sufficient electrical path is to be secured in the straight connection conductor, the length of the connection conductor is increased. As a result, since the rigidity of the connection conductor is reduced, the vibration of the connection conductor and the vibration of the peripheral structure of the terminal block may be increased. In addition, such a vibration may cause the bolts fastened to the terminal block to loosen, and if the tightened bolts loosen and come off, the bolts may fall into the motor, which is a problem. .

  The present invention has been made in view of such a situation, and its purpose is to be compact, to prevent the fastening member from falling into the motor, to prevent oil from adhering to the terminal block, and to be adjacent to each other. An object of the present invention is to provide a peripheral structure of a terminal block that can prevent a short circuit of a connection conductor and can increase rigidity.

  In order to solve the problems, a peripheral structure of a terminal block according to an aspect of the present invention includes a rotor that rotates about a motor rotation axis, a vehicle motor having a stator disposed around the rotor, and the stator. A plurality of stator wires extending in a direction from the connector toward the outer periphery of the motor, a connector connected to a plurality of external wires corresponding to the plurality of stator wires, and a plurality of the plurality of stator wires protruding in the connector connection direction from the connector toward the stator A plurality of connector terminals corresponding to the stator wiring and the plurality of external wirings, and a plurality of connecting conductors connecting the plurality of stator wirings and the plurality of connector terminals corresponding to the plurality of stator wirings, respectively. And a terminal block peripheral structure comprising a terminal block disposed around the stator, wherein the plurality of connector ends And a plurality of connector-side connection portions that connect the plurality of connection conductors corresponding to the plurality of connector terminals are arranged side by side in the rotation axis direction along the stator rotation axis, and the plurality of stator wires; A plurality of motor side connection portions that connect the plurality of connection conductors corresponding to the plurality of stator wires are arranged at intervals in the connector connection direction, and the connection conductors are formed in an L shape, In the stator side connection portion, the stator wiring and the connection conductor are fastened together with the terminal block by a stator side fastening member having an axis line arranged along the rotation axis direction.

  In the peripheral structure of the terminal block according to one aspect of the present invention, in the connector-side connection portion, the connection conductor, the connector terminal, and the connector terminal are connected by a connector-side fastening member having an axis line disposed along the outer circumferential tangent direction of the stator. Is fastened together with the terminal block, and the terminal block includes a partition wall disposed between the plurality of connector side connection portions and the plurality of stator side connection portions, and the partition wall is provided on the plurality of connector side portions. It is formed in a substantially U shape so as to surround the connecting portion and open toward the connector.

  In the peripheral structure of the terminal block according to an aspect of the present invention, the terminal block includes a rib formed in an L shape between the adjacent connection conductors, and a stator side end of the rib is formed on the stator side. It protrudes in the rotation axis direction from the head of the fastening member.

  According to the present invention, the following effects can be obtained. A peripheral structure of a terminal block according to an aspect of the present invention is a vehicle motor having a rotor that rotates around a motor rotation axis, and a stator that is disposed around the rotor, and from the stator toward the outer periphery of the motor. A plurality of stator wires extending in a direction, a connector connected to a plurality of external wires corresponding to the plurality of stator wires, a connector connecting direction from the connector toward the stator, and the plurality of stator wires and the plurality of stator wires A plurality of connector terminals corresponding to external wiring, a plurality of connection conductors connecting the plurality of stator wirings and the plurality of connector terminals corresponding to each of the plurality of stator wirings, and around the stator A peripheral structure of a terminal block comprising a terminal block to be disposed, wherein the plurality of connector terminals and the plurality of connectors A plurality of connector-side connection portions that connect the plurality of connection conductors corresponding to the child are arranged in the direction of the rotation axis along the stator rotation axis, and the plurality of stator wires and the plurality of stator wires A plurality of motor side connection portions that connect the corresponding plurality of connection conductors are arranged at intervals in the connector connection direction, and the connection conductors are formed in an L shape. The stator wiring and the connection conductor are fastened together with the terminal block by a stator side fastening member having an axis line arranged along the rotation axis direction. Therefore, since the connection conductor of the terminal block is formed in an L shape, it is possible to make the terminal block compact while reliably forming an electrical path made of the connection conductor, and further increase the rigidity of the terminal block. be able to.

  In the peripheral structure of the terminal block according to one aspect of the present invention, in the connector-side connection portion, the connection conductor, the connector terminal, and the connector terminal are connected by a connector-side fastening member having an axis line disposed along the outer circumferential tangent direction of the stator. Is fastened together with the terminal block, and the terminal block includes a partition wall disposed between the plurality of connector side connection portions and the plurality of stator side connection portions, and the partition wall is provided on the plurality of connector side portions. It is formed in a substantially U shape so as to surround the connecting portion and open toward the connector. Therefore, the rigidity of the terminal block can be increased by the partition wall. In addition to such an effect, it is possible to prevent oil scattered from the rotating rotor from being blocked by the partition wall and to adhere to the connector side connection portion. In addition, the partition wall can prevent the connector side fastening member from falling into the motor.

  In the peripheral structure of the terminal block according to an aspect of the present invention, the terminal block includes a rib formed in an L shape between the adjacent connection conductors, and a stator side end of the rib is formed on the stator side. It protrudes in the rotation axis direction from the head of the fastening member. Therefore, the rigidity of the terminal block can be increased by the L-shaped rib. In addition to such an effect, oil adhesion between adjacent connection conductors can be prevented by the ribs, and furthermore, oil adhesion at adjacent stator side connection portions can be prevented by the stator side end portions of the ribs. Short circuit can be prevented.

It is a perspective view showing roughly the regenerative motor which has the peripheral structure of the terminal block concerning the embodiment of the present invention. It is a perspective view which shows roughly the periphery structure of the terminal block which concerns on embodiment of this invention. It is the A section enlarged view of FIG. It is a perspective view which shows schematically the peripheral structure of the terminal block which concerns on embodiment of this invention in the state cut | disconnected along BB of FIG. It is a perspective view which shows schematically the peripheral structure of the terminal block which concerns on embodiment of this invention in the state cut | disconnected along CC of FIG. It is a side view which shows roughly the peripheral structure of the terminal block which concerns on embodiment of this invention in the state cut | disconnected along DD of FIG.

  A regenerative motor having a peripheral structure of a terminal block according to an embodiment of the present invention will be described. As shown in FIG. 1, the regenerative motor 1 includes a rotor 2 that rotates about a motor rotation axis 1 a and a stator 3 that is disposed around the rotor 2. In the present embodiment, the regenerative motor 1 will be described as a three-phase motor. The regenerative motor 1 further includes a motor case 4 that houses the rotor 2 and the stator 3. The motor case 4 has an accommodating portion 4a formed in a substantially cylindrical shape so as to extend in a direction along the motor rotation axis 1a (hereinafter referred to as “rotation axis direction”). The rotor 2 and the stator 3 are accommodated in the accommodating portion 4a. Such a regenerative motor 1 is configured to convert the rotational resistance of a running wheel (not shown) during braking into electric power by electromagnetic induction between the rotor 2 and the stator 3. As shown in FIG. 2, the stator 3 has a first stator wiring 3a, a second stator wiring 3b, and a third stator wiring 3c. The first stator wiring 3 a, the second stator wiring 3 b, and the third stator wiring 3 c extend from the outer peripheral surface 3 d of the stator 3. The respective leading end portions of the first stator wiring 3 a, the second stator wiring 3 b, and the third stator wiring 3 c are attached to a terminal block 5 disposed around the stator 3. A connector 6 is connected to such a terminal block 5.

  As shown in FIG. 1 again, the connector 6 is disposed on the upper oblique side of the motor case 4 when viewed from the rotational axis direction, and is attached to the outer peripheral surface 4b of the accommodating portion 4a of the motor case 4. The connector 6 is connected to a distal end portion 7a of an external wiring 7 extending from an external device (not shown) such as an inverter. As shown in FIGS. 2 and 3, the connector 6 includes a first connector terminal 6a, a second connector terminal 6b, and a first connector terminal corresponding to the first stator wiring 3a, the second stator wiring 3b, and the third stator wiring 3c, respectively. 3 connector terminals 6c are provided. The first connector terminal 6a, the second connector terminal 6b, and the third connector terminal 6c extend in a direction from the connector 6 toward the stator 3 (hereinafter referred to as “connector connection direction”). The connector connection direction is preferably arranged along the radial direction of the stator 3.

  Details of the stator 3 will be described. As shown in FIG. 1, an end face (hereinafter referred to as “outer end face”) 3 e on one side (hereinafter referred to as “outer end face”) in the rotational axis direction of the stator 3 is disposed so as to be exposed to the outside of the motor case 4. Although not shown in particular, the other end surface (hereinafter referred to as “center side end”) 3 f of the stator 3 in the rotation axis direction (hereinafter referred to as “center side end surface”) 3 f is disposed inside the motor case 4. Yes. As shown in FIG. 2, the stator 3 is formed in a substantially ring shape so as to have a width w (hereinafter referred to as “stator width”) along the rotation axis direction.

  As shown in FIGS. 2 and 3, the first stator wiring 3a is formed in an L shape. The second stator wiring 3b is formed in a dogleg shape (shape with a bent angle) at a position near the center side end face 3f of the stator 3 in the rotation axis direction, and then extends outward in the rotation axis direction. The third stator wiring 3c extends linearly at a position near the center side end face 3f of the stator 3 in the rotation axis direction, and then extends outward in the rotation axis direction. The tip portions of the first stator wiring 3a, the second stator wiring 3b, and the third stator wiring 3c are arranged along an inclined line 1b in which the center side of the motor rotation axis 1a of the regenerative motor 1 is inclined toward the connector 6 side. Has been. Furthermore, the respective leading end portions of the first stator wiring 3a, the second stator wiring 3b, and the third stator wiring 3c are arranged side by side in the connector connecting direction when viewed from the rotational axis direction. On the other hand, the base end portions of the first stator wiring 3a, the second stator wiring 3b, and the third stator wiring 3c are arranged at the center side end portion of the outer peripheral surface 3d of the stator 3 side by side in the circumferential direction of the stator 3. Has been.

  Details of the terminal block 5 will be described. As shown in FIG. 3, the terminal block 5 is disposed between the stator 3 and the connector 6 along the connector connection direction. The terminal block 5 includes a first connection conductor 5a, a second connection conductor 5b, and a third connection conductor 5c each formed in an L shape. The first connection conductor 5a, the second connection conductor 5b, and the third connection conductor 5c correspond to the first stator wiring 3a, the second stator wiring 3b, and the third stator wiring 3c, respectively, and are each the first connector terminal 6a. , Corresponding to the second connector terminal 6b and the third connector terminal 6c. The second connection conductor 5b is disposed on the outer side in the rotation axis direction with respect to the first connection conductor 5a, and the third connection conductor 5c is disposed on the outer side in the rotation axis direction with respect to the second connection conductor 5b.

  As shown in FIG. 3, at one end of the first connection conductor 5a (hereinafter referred to as “stator side end”), the tip of the first stator wiring 3a is disposed so as to overlap in the rotation axis direction. The leading end portion of the first stator wiring 3a and the stator side end portion of the first connecting conductor 5a are fastened together by a first stator side bolt 8a having an axis line arranged along the rotation axis direction, so that the first stator A side connection portion 9a is formed. At the end of the second connection conductor 5b on the stator side, the tip of the second stator wiring 3b is disposed so as to overlap in the rotation axis direction. The tip end portion of the second stator wiring 3b and the stator side end portion of the second connection conductor 5b are fastened together by a second stator side bolt 8b having an axis line arranged along the rotation axis direction, and the second stator. A side connection portion 9b is formed. At the end of the third connection conductor 5c on the stator side, the tip of the third stator wiring 3c is disposed so as to overlap in the rotation axis direction. The tip end portion of the third stator wiring 3c and the stator side end portion of the third connection conductor 5c are fastened together by a third stator side bolt 8c having an axis line arranged along the rotation axis direction, and the third stator. A side connection portion 9c is formed. The first stator side connection portion 9a, the second stator side connection portion 9b, and the third stator side connection portion 9c are respectively the heads of the first stator side bolt 8a, the second stator side bolt 8b, and the third stator side bolt 8c. The center of the seating surface is the reference position. The 1st stator side connection part 9a, the 2nd stator side connection part 9b, and the 3rd stator side connection part 9c are arrange | positioned along with the direction along the inclined line 1b. Specifically, the first stator side connection portion 9a, the second stator side connection portion 9b, and the third stator side connection portion 9c are arranged at intervals in the connector connection direction.

  As shown in FIG. 3, each of the other end portions (hereinafter referred to as “connector side end portions”) of the first connection conductor 5a, the second connection conductor 5b, and the third connection conductor 5c is along the rotation axis direction. They are arranged side by side. At the connector-side end portion of the first connection conductor 5 a, the tip end portion of the first connector wiring 6 a is disposed so as to overlap with a tangential direction “hereinafter referred to as“ outer peripheral tangential direction ”” with respect to the outer periphery of the stator 3. The first connector wiring 6a and the connector-side end of the first connecting conductor 5a are fastened together by a first connector-side bolt 10a having an axis arranged along the rotation axis direction, so that the first connector A side connection portion 11a is formed. At the connector-side end of the second connection conductor 5b, the tip of the second connector wiring 6b is disposed so as to overlap in the outer peripheral tangential direction. The tip end portion of the second connector wiring 6b and the connector side end portion of the second connection conductor 5b are fastened together by a second connector side bolt 10b having an axis line arranged along the rotation axis direction, and the second connector A side connection portion 11b is formed. At the connector-side end of the third connection conductor 5c, the tip of the third connector wiring 6c is disposed so as to overlap in the outer peripheral tangential direction. The tip end portion of the third connector wiring 6c and the connector side end portion of the third connection conductor 5c are fastened together by a third connector side bolt 10c having an axis arranged along the rotation axis direction, and the third connector A side connection portion 11c is formed. The first connector side connecting portion 11a, the second connector side connecting portion 11b, and the third connector side connecting portion 11c are respectively the heads of the first connector side bolt 10a, the second connector side bolt 10b, and the third connector side bolt 10c. The center of the seating surface is the reference position. The 1st connector side connection part 11a, the 2nd connector side connection part 11b, and the 3rd connector side connection part 11c are arrange | positioned along with the rotating shaft direction.

  Although not shown in particular, the corners of the L-shaped first connection conductor 5a, second connection conductor 5b, and third connection conductor 5c are the first connection conductor 5a, second connection conductor 5b, and third connection, respectively. It arrange | positions in the position higher than the stator side edge part of the conductor 5c. Further, the length of the electrical path composed of the first stator side wiring 3a and the first connection conductor 5a, the length of the electrical path composed of the second stator side wiring 3b and the second connection conductor 5b, and the third stator side wiring 3c. And the length of the electrical path which consists of the 3rd connection conductor 5c is equal.

  As shown in FIGS. 2 to 6, the terminal block 5 is formed between the first stator side connection portion 9 a to the third stator side connection portion 9 c and the first connector side connection portion 11 a to the third connector side connection portion 11 c. 5d is provided. As shown in FIGS. 3 and 6, the partition wall 5 d is formed in a U shape so as to surround the first connector side connection portion 11 a to the third connector side connection portion 11 c when viewed from the rotation axis direction. The character-shaped partition 5 d opens toward the connector 6. As shown in FIGS. 4 and 5, the connector-side end 5 d 1 of the partition wall 5 d and the outer end 5 d 2 in the rotation axis direction are arranged with a predetermined space between the inner wall surface 4 c of the motor case 4. . In addition, it is good for this predetermined space | interval to be smaller than the thickness of the head of the 1st connector side volt | bolt 10a-the 3rd connector side volt | bolt 10c. By such an interval, it is possible to prevent the first connector side bolt 10a to the third connector side bolt 10c from falling into the regenerative motor 1.

  As shown in FIGS. 3 and 6, the terminal block 5 includes a first rib 5e formed in a straight line, a second rib 5f, a third rib 5g, and a fourth rib 5h formed in an L shape. have. A first connecting conductor 5a is disposed between the first rib 5e and the second rib 5f, a second connecting conductor 5b is disposed between the second rib 5f and the third rib 5g, and the third rib 5g. The third connecting conductor 5c is disposed between the first rib 5h and the fourth rib 5h. The stator-side end portion 5f1 of the second rib 5f protrudes toward the center side in the rotation axis direction from the head of the second connector-side bolt 10b. The stator-side end 5g1 of the second rib 5g protrudes toward the center in the rotational axis direction from the head of the second connector-side bolt 10b. The stator-side end portion 5h1 of the third rib 5h protrudes toward the center in the rotational axis direction from the head of the third connector-side bolt 10c. As shown in FIGS. 3, 5, and 6, the terminal block 5 is formed with a mounting portion 5 i that protrudes in the outer peripheral tangential direction. The terminal block 5 is attached to the motor case 4 by inserting a terminal block mounting bolt 12 having an axis disposed along the rotation axis direction into the mounting portion 5 i.

  Details of the connector 6 will be described. As shown in FIGS. 2 and 3, the connector 6 has a connector body 6d. The distal end portion of the connector main body 6d is formed in an elongated shape in the rotation axis direction. The base end portion of the connector main body 6 d is formed so as to protrude on both sides in the rotation axis direction, and the base end portion of the connector main body 6 d is attached to the housing portion 4 a of the motor case 4.

  As described above, according to the present embodiment, since the first connection conductor 5a to the third connection conductor 5c of the terminal block 5 are formed in an L shape, the first connection conductor 5a to the third connection conductor 5c are included. The terminal block 5 can be made compact while the electrical path is reliably formed, and the rigidity of the terminal block 5 can be increased.

  According to the present embodiment, the rigidity of the terminal block 5 can be increased by the partition walls 5d. In addition to such an effect, it is possible to prevent oil scattered from the rotating rotor 2 from being blocked by the partition wall 5d, and the oil from adhering to the first connector side connection portion 11a to the third connector side connection portion 11c. Further, the partition wall 5 d can prevent the first connector side bolt 10 a to the third connector side bolt 10 c from falling into the regenerative motor 1.

  According to the present embodiment, the rigidity of the terminal block 5 can be increased by the L-shaped second rib 5f to the fourth rib 5h. In addition to such an effect, the adhesion of oil between adjacent connection conductors can be prevented by the second rib 5f and the third rib 5g, and further, the adhesion of oil at adjacent stator side connection portions can be prevented from occurring by the second rib 5f and the third rib. Since it can prevent by 5g stator side edge part 5f1, 5g1, the short circuit of an adjacent connection conductor can be prevented.

  According to this embodiment, the corners of the L-shaped first connection conductor 5a to third connection conductor 5c are arranged at positions higher than the stator side end portions of the first connection conductor 5a to third connection conductor 5c, respectively. Has been. Therefore, in addition to the effect of increasing the rigidity of the peripheral structure of the terminal block 5 by the L-shaped second rib 5f to the fourth rib 5h, the oil accumulated at the corners of the L-shaped second rib 5f to the fourth rib 5h To the stator side end of the L-shaped first connecting conductor 5a to third connecting conductor 5c, such oil can be removed reliably. Therefore, oil adhesion to the terminal block 5 can be prevented.

  Although the embodiments of the present invention have been described so far, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made based on the technical idea of the present invention.

  For example, as a first modification of the present invention, the peripheral structure of the terminal block 5 according to the present embodiment may be used for a vehicle drive motor instead of the vehicle regenerative motor 1.

  As a second modification of the present invention, the number of stator wires, stator side bolts, stator side connection parts, terminal block connection conductors, connector side bolts, connector side connection parts, and connector terminals is two or four or more. There may be. The number of ribs on the terminal block is preferably one more than the number of connecting conductors on the terminal block.

  As a third modification of the present invention, the terminal block 5 and the connector 6 may be provided above the side of the motor case 4 as viewed from the rotation axis direction, on the side, and the like.

  As a fourth modification of the present invention, instead of at least one of the first stator side bolt 8a to the third stator side bolt 8c, the first connector side bolt 10a to the third connector side bolt 10c, and the terminal block mounting bolt 12, A screw, a rivet, or the like may be used as the fastening member.

1 regenerative motor 1a motor rotation axis 2 rotor 3 stator 3a first stator wiring 3b second stator wiring 3c third stator wiring 4 motor case 5 terminal block 5a first connection conductor 5b second connection conductor 5c third connection conductor 5d partition wall 5f Second rib 5g Third rib 6 Connector 6a First connector terminal 6b Second connector terminal 6c Third connector terminal 7 External wiring 8a First stator side bolt 8b Second stator side bolt 8c Third stator side bolt 9a First stator side Connection portion 9b Second stator side connection portion 9c Third stator side connection portion 10a First connector side bolt 10b Second connector side bolt 10c Third connector side bolt 11a First connector side connection portion 11b Second connector side connection portion 11c 3Connector side connection w width (stator width)
d interval

Claims (3)

A vehicle motor having a rotor rotating around a motor rotation axis, and a stator disposed around the rotor;
A plurality of stator wires extending in a direction from the stator toward the outer periphery of the motor;
A connector connected to a plurality of external wires corresponding to the plurality of stator wires;
A plurality of connector terminals projecting in a connector connection direction from the connector toward the stator, and corresponding to the plurality of stator wires and the plurality of external wires;
A terminal having a plurality of connection conductors connecting the plurality of stator wires and the plurality of connector terminals corresponding to each of the plurality of stator wires, and a terminal block disposed around the stator. The peripheral structure of the table,
A plurality of connector-side connection portions that connect the plurality of connector terminals and the plurality of connection conductors corresponding to the plurality of connector terminals are arranged side by side in a rotation axis direction along the stator rotation axis;
A plurality of motor-side connection portions that connect the plurality of stator wires and the plurality of connection conductors corresponding to the plurality of stator wires are arranged at intervals in the connector connection direction,
The connection conductor is formed in an L shape,
In the stator side connection portion, the peripheral structure of the terminal block, wherein the stator wiring and the connection conductor are fastened together with the terminal block by a stator side fastening member having an axis line arranged along the rotation axis direction. . In the connector side connection portion, the connection conductor and the connector terminal are fastened together with the terminal block by a connector side fastening member having an axis line arranged along the outer circumferential tangent direction of the stator,
The terminal block has a partition wall disposed between the plurality of connector side connection portions and the plurality of stator side connection portions,
The peripheral structure of the terminal block according to claim 1, wherein the partition wall is formed in a substantially U shape so as to surround the plurality of connector side connection portions and to open toward the connector. The terminal block has a rib formed in an L shape between the adjacent connecting conductors,
The peripheral structure of the terminal block according to claim 1 or 2, wherein a stator side end portion of the rib protrudes in a direction of the rotation axis from a head of the stator side fastening member.

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