WO2021019621A1

WO2021019621A1 - On-board motor

Info

Publication number: WO2021019621A1
Application number: PCT/JP2019/029505
Authority: WO
Inventors: 慶輝菅野
Original assignee: 三菱電機株式会社
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2021-02-04

Abstract

Connector-side terminals (42) are accommodated inside accommodation sections (43) of a connector (4). Protrusions (44) shaped to protrude from bottom surfaces (43a) and engaging with bent parts (42c) of the connector-side terminals (42) are formed in the accommodation sections (43). Surfaces of the protrusions (44) located on the side close to wires (5) are inclined surfaces (44a) inclined such that the widths of the protrusions (44) decrease from the bottom surfaces (43a) toward the leading ends thereof.

Description

In-vehicle motor

The present invention relates to an in-vehicle motor.

Conventionally, the second connector portion provided at the tip of the cable extending from the engine control unit is plugged and connected to the first connector portion of the in-vehicle motor. As a result, the engine control unit and the in-vehicle motor are electrically connected (see, for example, Patent Document 1).

Japanese Patent No. 5700127

The second connector portion described in Patent Document 1 is provided with a tubular space, and the second joint terminal is housed in this tubular space. This second junction terminal is a terminal that holds the cable on one end side and serves as a contact point with the first junction terminal of the first connector portion on the other end side. The second connector portion is provided with a disconnection prevention mechanism so that the cable is not pulled and disconnected. The disconnection prevention mechanism includes a protrusion formed on the second joint terminal and a locking protrusion provided so as to protrude from the wall surface of the tubular space of the second connector portion and lock the protrusion. Since the locking protrusion protrudes from the wall surface of the tubular space, there is a problem that the locking protrusion and the protrusion are caught when the second joint terminal is inserted into the tubular space, making it difficult to insert.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an in-vehicle motor in which a terminal can be easily attached to a connector.

The in-vehicle motor according to the present invention is an in-vehicle motor including a wire for connecting the in-vehicle motor to an in-vehicle device and a connector for connecting a motor-side terminal of the in-vehicle motor, and the connector holds the wire and the wire. From the bottom of the connector side terminal, which is formed with a holding portion that is electrically connected to the motor, a joint that is electrically connected to the motor side terminal, and a bent portion that connects the holding portion and the joint portion. It has an accommodating portion for accommodating the connector-side terminal, which has a projecting shape and has a projecting portion that engages with the bent portion, and the surface of the projecting portion on the side close to the wire protrudes from the bottom surface toward the tip. It is an inclined surface that is inclined so that the width of the portion becomes narrow.

According to the present invention, the surface of the projecting portion protruding from the bottom surface of the accommodating portion accommodating the connector-side terminal on the side close to the wire is formed into an inclined surface in which the width of the projecting portion becomes narrower from the bottom surface toward the tip. Therefore, it is possible to provide an in-vehicle motor in which the connector-side terminal can be easily inserted into the accommodating portion and the connector-side terminal can be easily attached to the connector.

It is an overall view which shows the structural example of the vehicle-mounted motor which concerns on Embodiment 1. FIG. It is an exploded perspective view which shows the structural example of the connector of Embodiment 1. FIG. It is sectional drawing which shows the structural example of the connector of Embodiment 1. FIG. It is a perspective view which shows the structural example of the accommodating part in the connector of Embodiment 1. FIG. It is an external perspective view which shows the structural example of the connector of Embodiment 1. FIG. It is sectional drawing which shows the modification of the vehicle-mounted motor which concerns on Embodiment 1. FIG.

Hereinafter, in order to explain the present invention in more detail, a mode for carrying out the present invention will be described with reference to the accompanying drawings.
Embodiment 1.
FIG. 1 is an overall view showing a configuration example of the vehicle-mounted motor 1 according to the first embodiment. The in-vehicle motor 1 includes an output shaft 2, a resin cover 3, and a connector 4. The in-vehicle motor 1 drives an exhaust gas recirculation valve (not shown), a wastegate valve, a variable nozzle vane, and the like. The output shaft 2 is attached to an exhaust gas recirculation valve, a wastegate valve, a variable nozzle vane, or the like via an output transmission mechanism. A circuit board, a sensor, or the like is housed inside the resin cover 3. Outside the resin cover 3, a connector 4 for supplying electric power to the in-vehicle motor 1 or outputting a sensor detection value is provided. One end side of the wire 5 is connected to the connector 4. The other end of the wire 5 is connected to the connector 6. The connector 6 is connected to the connector 7 of the engine control unit (ECU) 8. Electric power is supplied from the ECU 8 to the vehicle-mounted motor 1 via the

connectors

7, 6, the wires 5, and the connector 4. Further, the detected value of the sensor is output from the in-vehicle motor 1 to the ECU 8 via the connector 4, the wire 5, and the

connectors

6 and 7. The ECU 8 is an example of an in-vehicle device.
As will be described later, it is assumed that the protective tube 51 (see FIG. 5) is attached to the wire 5.

FIG. 2 is an exploded perspective view showing a configuration example of the connector 4 of the first embodiment. FIG. 3 is a cross-sectional view showing a configuration example of the connector 4 of the first embodiment. In FIG. 3, the side surfaces of the motor side terminal 41, the connector side terminal 42, and the wire 5 are shown. FIG. 4 is a perspective view showing a configuration example of the accommodating portion 43 in the connector 4 of the first embodiment.

As shown in FIG. 3, the motor side terminal 41 is integrally molded with the resin cover 3 of the in-vehicle motor 1. The connector 4 is for electrically connecting the motor-side terminal 41 and the wire 5. The connector 4 and the connector holding portion 31 are integrally molded with the resin cover 3 on the outside of the resin cover 3, and the resin cover 3 and the connector 4 are connected to each other via the connector holding portion 31. The connector 4 includes a connector-side terminal 42, an accommodating portion 43, a protruding portion 44, a seal 45, a wire seal 46, and a cover 47. The motor-side terminal 41 and the connector-side terminal 42 are conductors.

The connector side terminal 42 has a holding portion 42a, a joining portion 42b, and a bent portion 42c. The holding portion 42a holds the wire 5 and electrically connects the wire 5. In the example of FIG. 3, the holding portion 42a has a configuration for holding each of the electric wire portion and the covering material portion of the wire 5. The holding portion 42a holds the wire 5 by being crimped while sandwiching the wire 5. The joint portion 42b is joined to the motor side terminal 41 and electrically connected. The joint portion 42b and one end of the motor side terminal 41 are joined by welding, soldering, brazing, or the like. A bent portion 42c having a U-shaped bend is formed between the holding portion 42a and the joint portion 42b. The bent portion 42c is elastically deformed to prevent the load applied to the wire 5 from being transmitted to the joint portion 42b. As a result, poor connection and damage between the motor-side terminal 41 and the connector-side terminal 42 are prevented.

The accommodating portion 43 is a recess for accommodating the connector side terminal 42. One connector-side terminal 42 is accommodated in one accommodating portion 43. The accommodating portion 43 has a protruding portion 44 having a shape protruding from the bottom surface 43a of the accommodating portion 43. The bent portion 42c of the connector-side terminal 42 engages with the protruding portion 44. The surface of the protrusion 44 on the side closer to the wire 5 is an inclined surface 44a that is inclined so that the width of the protrusion 44 becomes narrower from the bottom surface 43a toward the tip. On the other hand, the surface of the protruding portion 44 on the side far from the wire 5 is a vertical surface, and when the wire 5 receives a load in the direction of disconnecting from the connector 4, the surface of the protruding portion 44 is detached by abutting the bent portion 42c of the connector side terminal 42. It functions as a stopper 44b.

Note that, in the first embodiment, the upper four connector-side terminals 42 and the lower four connector-side terminals 42 are vertically symmetrically accommodated in one connector 4. Further, the connector 4 of the first embodiment has a configuration in which the upper four accommodating portions 43 and the lower four accommodating portions 43 are formed vertically symmetrically. As shown in FIG. 3, the bottom surface 43a of the upper accommodating portion 43 and the bottom surface 43a of the lower accommodating portion 43 are arranged so as to face each other, and the upper projecting portion 44 projects upward and the lower accommodating portion 43 The protruding portion 44 projects downward. The number of connector-side terminals 42 and accommodating portions 43 can be appropriately changed according to the number of wires 5.

FIG. 5 is an external perspective view showing a configuration example of the connector 4 of the first embodiment. The connector 4 is covered with a resin cover 47. The cover 47 is fixed to the connector 4 by being joined to the cover joining portion 32 provided on the outer peripheral surface of the connector holding portion 31. The cover 47 and the cover joint portion 32 are joined by heat welding, laser welding, or the like to block airflow. An opening 47a for passing the wire 5 and the protective tube 51 is provided on the side opposite to the joint portion of the cover 47. As shown in FIG. 3, the inner edge portion of the opening 47a is an R-chamfered chamfered portion 47b in order to facilitate the passage of the wire 5 and the protective tube 51. A groove in the circumferential direction is provided on the outer surface of the protective tube 51. The adapter 52 fits into the groove of the protective tube 51 and the recess 47c provided around the opening 47a of the cover 47 to fix the protective tube 51 and the cover 47 in a sandwiched state.

Next, a method of assembling the connector 4 will be described.
The operator passes the wire 5 through the hole of the wire seal 46 and attaches the seal 45 to the outer surface of the connector 4. Subsequently, the operator attaches the connector-side terminal 42 to the wire 5 and attaches the protective tube 51 to the wire 5. Subsequently, the operator passes the wire 5 and the protective tube 51 through the opening 47a of the cover 47, and inserts the connector-side terminal 42 attached to the wire 5 into the accommodating portion 43 from the seal receiving portion 48 side of the connector 4. At this time, since the joint portion 42b and the bent portion 42c of the connector side terminal 42 ride on the inclined surface 44a of the protruding portion 44 while elastically deforming, the connector side terminal 42 does not get caught in the protruding portion 44 and can be easily inserted.

Subsequently, the operator joins the joint portion 42b of the connector side terminal 42 and the motor side terminal 41, and attaches the wire seal 46 to the seal receiving portion 48. Then, the operator covers the connector 4 with the cover 47 and joins the cover 47 to the cover joint portion 32. Finally, the operator attaches the adapter 52 to the cover 47 and the protective tube 51 with one end of the protective tube 51 inserted into the opening 47a of the cover 47.

The tightness of the connector 4 is ensured by joining the cover 47 and the cover joining portion 32, bringing the seal 45 and the cover 47 into close contact with each other, and bringing the seal receiving portion 48, the wire seal 46, and the wire 5 into close contact with each other.
Further, the wire 5 is protected by covering the portion located inside the cover 47 with the cover 47 and covering the portion not located inside the cover 47 with the protective tube 51.

By the way, the second connector described in Patent Document 1 has a configuration in which one end of the protective tube cannot be inserted into the second connector because the seal member and the tail plate are attached to the opening for exposing the wire to the outside. is there. In such a conventional configuration, the total length of the protective tube is made shorter than the total length of the wire by the above space in order to secure a space for assembling the wire, the sealing member, and the tail plate to the second connector. There is a need. Therefore, after the wire or the like is assembled to the second connector, a part of the wire is exposed from the protective tube outside the second connector, and it is necessary to cover this exposed portion with an adapter to protect it. Therefore, in the conventional configuration in which the opening for passing the protective tube is not provided in the second connector, the size of the adapter becomes large. On the other hand, in the first embodiment, the wire 5, the wire seal 46, and the cover 47 can be assembled to the connector 4 with one end of the protective tube 51 inserted into the opening 47a of the cover 47. Therefore, it is not necessary to secure a space for assembling the wire 5 or the like to the connector 4, and the adapter 52 can be made smaller than the conventional one.

In addition, in FIGS. 1 to 5, since it is assumed that the wire 5 is arranged in the direction orthogonal to the output shaft 2 of the in-vehicle motor 1, the connector holding portion 31 is the connector 4 in the direction in which the wire 5 is arranged. The shape was such that the connector 4 was held in a state of facing. The shape of the connector holding portion 31 is not limited to the shapes shown in FIGS. 1 to 5, and the connector 4 may be held in a state where the connector 4 is directed in an arbitrary direction in which the wire 5 is arranged. It is possible.

FIG. 6 is a cross-sectional view showing a modified example of the vehicle-mounted motor 1 according to the first embodiment. In the modified example of FIG. 6, the connector holding portion 31A has a shape bent by 90 degrees, and the connector holding portion 31A holds the connector 4 in the same direction as the output shaft 2 (see FIG. 1). In this way, the orientation of the connector 4 can be changed according to the direction in which the wires 5 are arranged, the mounting posture of the product to which the vehicle-mounted motor 1 is applied, the mounting space, and the like. By changing the shapes of only the connector holding portion 31A and the motor-side terminal 41A arranged inside the connector holding portion 31A, the connector 4 can be directed in any direction without changing the shapes of other parts.

As described above, the vehicle-mounted motor 1 according to the first embodiment includes the connector 4. The connector 4 has a connector-side terminal 42 and an accommodating portion 43. The connector side terminal 42 has a holding portion 42a that holds the wire 5 and electrically connects to the wire 5, a joining portion 42b to which the motor side terminal 41 is joined and electrically connected, and a holding portion 42a and a joining portion 42b. A bent portion 42c having a bent shape is formed to connect the two. The accommodating portion 43 accommodating the connector-side terminal 42 is formed with a projecting portion 44 having a shape protruding from the bottom surface 43a and engaging with the bent portion 42c. In the vehicle-mounted motor 1 having this configuration, the surface of the protruding portion 44 on the side close to the wire 5 is an inclined surface 44a that is inclined so that the width of the protruding portion 44 becomes narrower from the bottom surface 43a toward the tip. It becomes easy to insert the connector side terminal 42 into 43. Therefore, it is possible to provide an in-vehicle motor 1 in which the connector-side terminal 42 can be easily attached to the connector 4.

Further, in the vehicle-mounted motor 1 according to the first embodiment, when the connector 4 has a plurality of connector-side terminals 42, the accommodating portions 43 provided in the same number as the connector-side terminals 42 in the connector 4 are stacked in two upper and lower stages. Moreover, the bottom surface 43a of the upper accommodating portion 43 and the bottom surface 43a of the lower accommodating portion 43 are arranged so as to face each other. With this configuration, a large number of wires 5 can be connected to the vehicle-mounted motor 1 with one connector 4 while maintaining the ease of attachment of the connector-side terminal 42. Further, since the accommodating portions 43 are stacked in two stages, the increase in size of the connector 4 is suppressed.

Further, the vehicle-mounted motor 1 according to the first embodiment includes

connector holding portions

31, 31A for holding the connector 4 in a state where the connector 4 is directed in the direction in which the wire 5 is arranged. As a result, the in-vehicle motor 1 can direct the connector 4 in a direction in which the wire 5 can be easily routed only by changing the shapes of the

connector holding portions

31, 31A and the

motor side terminals

41, 41A.

Further, the vehicle-mounted motor 1 according to the first embodiment includes a cover 47 and an adapter 52. The cover 47 has an opening 47a through which the wire 5 to which the protective tube 51 is mounted is penetrated, and covers the housing portion 43 in which the connector-side terminal 42 is housed. The adapter 52 sandwiches and fixes the periphery of the opening 47a in the cover 47 and the protective tube 51. The adapter 52 can be miniaturized by passing the protective tube 51 through the opening 47a of the cover 47.

Further, according to the first embodiment, since the inner edge portion of the opening 47a in the cover 47 is chamfered, the wire 5 to which the protective tube 51 is attached can be easily passed through the opening 47a.

It should be noted that, within the scope of the present invention, it is possible to modify any component of the embodiment or omit any component of the embodiment.

The in-vehicle motor according to the present invention is suitable for use in an in-vehicle motor that drives an exhaust gas recirculation valve, a wastegate valve, a variable nozzle vane, and the like.

1 in-vehicle motor, 2 output shaft, 3 resin cover, 4, 6, 7 connector, 5 wire, 8 ECU (in-vehicle device), 31, 31A connector holding part, 32 cover joint, 41, 41A motor side terminal, 42 connector Side terminal, 42a holding part, 42b joint part, 42c bent part, 43 accommodating part, 43a bottom surface, 44 protruding part, 44a inclined surface, 44b retaining part, 45 seal, 46 wire seal, 47 cover, 47a opening, 47b Chamfered part, 47c recess, 48 seal receiving part, 51 protective tube, 52 adapter.

Claims

An in-vehicle motor including a wire for connecting an in-vehicle motor to an in-vehicle device and a connector for connecting a motor-side terminal of the in-vehicle motor.
The connector is
A holding portion that holds the wire and is electrically connected to the wire, a joint portion to which the motor-side terminal is joined and electrically connected, and a bent portion having a bent shape that connects the holding portion and the joint portion. The terminal on the connector side where
It has an accommodating portion for accommodating the connector-side terminal, which has a shape protruding from the bottom surface and has a protruding portion formed to engage with the bent portion.
An in-vehicle motor characterized in that the surface of the protruding portion on the side close to the wire is an inclined surface that is inclined so that the width of the protruding portion becomes narrower from the bottom surface toward the tip end.
When the connector has a plurality of connector-side terminals,
The accommodating portions provided in the same number as the connector side terminals in the connector are stacked in two upper and lower stages, and are arranged so that the bottom surface of the upper accommodating portion and the bottom surface of the lower accommodating portion face each other. The vehicle-mounted motor according to claim 1.
The vehicle-mounted motor according to claim 1, further comprising a connector holding portion that holds the connector in a state where the connector is directed in the direction in which the wire is arranged.
A cover having an opening through which the wire to which the protective tube is mounted and covering the housing in which the connector-side terminal is housed,
The vehicle-mounted motor according to claim 1, further comprising an adapter that sandwiches and fixes the periphery of the opening in the cover and the protective tube.
The vehicle-mounted motor according to claim 4, wherein the inner edge portion of the opening is chamfered.