JP2019024041A - On-vehicle equipment - Google Patents

Abstract

To perform highly reliable wiring connection between an electric component in one housing and an electric component in the other housing concerning on-vehicle equipment.SOLUTION: On-vehicle equipment includes: a first housing that stores a first electric component and has a first opening for communication between a storage space and an outer space; a second housing that stores a second electric component, has a second opening for communication between a storage space and an outer space, and is arranged to be adjacent to the first housing in a state where the second opening faces the first opening; a wiring part where one end is inserted to a storage space of the first housing through the first opening so as to be connected to the first electric component and the other end is inserted to a storage space of the second housing through the second opening so as to be connected to the second electric component; and a guide part that is constituted by a bended elastic member, surrounds an outer peripheral surface of the wiring part in a longitudinal direction, and regulates a shape of at least a part of the wiring part in the longitudinal direction to be a bended shape.SELECTED DRAWING: Figure 2

Description

  The present disclosure relates to an in-vehicle device.

  In recent years, there is an increasing demand for downsizing on-vehicle devices in electric vehicles and hybrid vehicles. From such a demand, a structure in which a drive motor, an inverter device, a charging device, a power storage device, and the like (hereinafter collectively referred to as an “in-vehicle module”) mounted on this type of vehicle are integrally studied (for example, , See Patent Document 1).

JP 2009-195080 A

  By the way, this type of vehicle-mounted module is usually housed in a separate housing from the viewpoint of waterproofness. Therefore, when an electrical component in one in-vehicle module and an electrical component in another in-vehicle module are electrically connected, it is necessary to draw out wiring from the own housing into the housing of the other in-vehicle module. .

  When performing such wiring connection, first, one end of the wiring is connected to the electrical component in one casing, and then the other end of the wiring is connected to the electrical component in the other casing. Then, with such wiring connection, these cases are combined together. Therefore, the wiring is usually provided to have an extra length corresponding to the work gap. However, if the wiring has an extra length, the surplus wiring is loosened between the casings when the casings are combined. As a result, surplus portions of the wiring may be sandwiched between the casings and may be damaged.

  In Patent Document 1, an electrical component in one in-vehicle module and another in-vehicle module are formed by embedding connectors in the wall portions of the housings of one in-vehicle module and the other in-vehicle module, and connecting the connectors together. It is described that an electrical component is electrically connected. In the prior art of Patent Document 1, this eliminates the need for a configuration for drawing the wiring out of the casing, and suppresses the risk of biting the wiring.

  However, the connection between the connectors as in the prior art of Patent Document 1 generally has low resistance to vibration, and a conduction failure easily occurs due to misalignment caused by the vibration. For this reason, it is difficult to say that it is suitable for in-vehicle devices arranged in a state where vibration is possible.

  The present disclosure has been made in view of the above problems, and enables more reliable wiring connection between an electrical component in one housing and an electrical component in another housing in an in-vehicle device. For the purpose.

The main present disclosure for solving the above-described problems is as follows.
A first housing that houses the first electrical component and has a first opening that communicates the housing space with the external space;
The second electrical component is housed and has a second opening that communicates the housing space with the external space, and the first opening in a state where the second opening faces the first opening. A second housing disposed adjacent to the housing of
One end is inserted into the storage space of the first housing through the first opening and connected to the first electrical component, and the other end is connected to the second opening through the second opening. A wiring portion that is inserted into a housing space of the housing and connected to the second electrical component;
A guide portion that is configured by a curved elastic member, surrounds the outer peripheral surface of the wiring portion along the longitudinal direction, and regulates at least a part of the shape of the wiring portion in the longitudinal direction to be curved;
It is an in-vehicle device provided with.

  According to the vehicle-mounted device according to the present disclosure, more reliable wiring connection is possible between an electrical component in one housing and an electrical component in another housing.

The side view which shows the whole structure of the vehicle equipment which concerns on one Embodiment The disassembled perspective view which shows the whole structure of the vehicle equipment which concerns on one Embodiment. The disassembled perspective view which shows the whole structure of the vehicle equipment which concerns on one Embodiment. The figure which shows an example of the connection state of the end of the wiring part of the vehicle equipment which concerns on one Embodiment

  Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the appended drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, the duplicate description is abbreviate | omitted by attaching | subjecting the same code | symbol.

[Configuration of in-vehicle equipment]
Hereinafter, an example of the configuration of the in-vehicle device 1 according to the present embodiment will be described with reference to FIGS.

  FIG. 1 is a side view showing the overall configuration of the in-vehicle device 1 according to the present embodiment.

  In the vehicle-mounted device 1 according to the present embodiment, for example, an inverter device 10 and a drive motor 20 that are mounted on an electric vehicle are integrally disposed. In the in-vehicle device 1 according to the present embodiment, the inverter device 10 and the drive motor 20 are disposed in order from the lower side (hereinafter also referred to as “state after assembly”).

  In the in-vehicle device 1 according to this embodiment, the inverter device 10 and the drive motor 20 are integrated to shorten the power line through which a large amount of power flows, thereby reducing power loss.

  Hereinafter, in particular, in the in-vehicle device 1, the circuit board 12 of the inverter device 10 (corresponding to the “first electrical component” of the present invention) and the sensor unit 23 of the drive motor 20 (the “second electrical component of the present invention”). The connection structure of the wiring portion 30 that connects to the “component”) will be described in detail.

  2 and 3 are exploded perspective views showing the overall configuration of the in-vehicle device 1 according to the present embodiment.

  FIG. 2 shows a state in which the wiring portion 30 is accommodated, and the wiring portion 30 is accommodated in a curved state in the longitudinal direction. FIG. 3 shows a state at the time of work for connecting the wiring part 30 to the sensor part 23 of the drive motor 20. The wiring part 30 is deformed from a curved state to a straight state, and wiring connection is performed. (Hereinafter, simply referred to as “drawn” state).

  FIG. 4 is a diagram illustrating an example of the inside of the casing of the inverter device 10 according to the present embodiment.

  2 to 4 show a state after one end of the wiring part 30 is connected to the connector 12 b and before the other end of the wiring part 30 is connected to the sensor part 23 of the drive motor 20. In addition, about the structure in the housing | casing of the drive motor 20, it shows with a dotted line in each figure.

  The inverter device 10 according to the present embodiment includes, for example, an inverter housing 11 and a circuit board 12 (see particularly FIG. 4).

  The circuit board 12 (corresponding to the “first electrical component” of the present invention) constitutes an inverter circuit by, for example, the switching element 12a. The inverter circuit of the circuit board 12 converts, for example, DC power received from the vehicle battery to three-phase AC power, and supplies power to the drive motor 20 via a power line (not shown).

  On the circuit board 12, in addition to the switching element 12a, a control device 12c and a connector 12b are mounted. One end of the wiring part 30 is connected to the connector 12b. Further, the connector 12b and the control device 12c are electrically connected via a wiring (not shown) formed on the circuit board 12.

  The control device 12c is, for example, a microcomputer that controls an inverter circuit or the like. The control device 12c receives a detection signal from the sensor unit 23 of the drive motor 20 via the wiring unit 30 and the connector 12b. The control device 12c controls the inverter circuit based on the detection signal from the sensor unit 23.

  The inverter housing 11 (corresponding to the “first housing” of the present invention) accommodates the circuit board 12 and the control device 12c in a substantially sealed state in order to protect them from surrounding moisture and the like. In addition, the inverter housing | casing 11 exhibits the rectangular parallelepiped external shape with a some wall part, for example.

  In the upper side wall portion 11a of the inverter housing 11, an opening portion 11c that communicates the storage space and the external space is formed. And the opening part 11c is formed so that the wiring part 30 can be pulled out from the storage space of the inverter housing | casing 11 through the said opening part 11c.

  Further, the upper side wall portion 11a of the inverter housing 11 is formed with a wiring storage portion 11b that forms a space for storing the excess wiring length of the wiring portion 30 so as to be separated from the storage space for storing the circuit board 12. ing. The wiring storage portion 11 b is formed at a position adjacent to the opening portion 11 c and facing the opening portion 21 c of the motor housing 21. The wiring storage portion 11b prevents an excess of the wiring length of the wiring portion 30 from entering the storage space after assembly and coming into contact with the circuit board 12 or the like. In addition, the wiring accommodating part 11b which concerns on this embodiment is integrally formed with the upper side wall part 11a as a part of upper side wall part 11a.

  In addition, a protruding wall portion 11ab that rises outward is formed on the upper side wall portion 11a of the inverter housing 11 so as to surround the wiring housing portion 11b. The protruding wall portion 11ab supports the motor housing 21 from below and also has a role of preventing moisture from entering the storage space from the external space in the supported state.

  Further, a cutout portion 11d is formed in the upper side wall portion 11a of the inverter housing 11 at a position adjacent to the opening portion 11c. The notch portion 11d is formed so that the engaging portion 31a of the guide portion 31 can be engaged (details will be described later).

  The drive motor 20 according to the present embodiment includes, for example, a motor housing 21, a motor unit 22, and a sensor unit 23.

  The motor unit 22 is, for example, a stator and a rotor that constitute a permanent magnet type synchronous motor or a squirrel-cage induction motor, and generates a driving force when the vehicle travels by three-phase AC power supplied from the inverter device 10. To do. The motor unit 22 transmits a driving force to the outside of the motor housing 21 via a bearing or the like provided in the motor housing 21.

  The sensor unit 23 (corresponding to the “second electrical component” of the present invention) is a thermistor that detects the temperature of the motor unit 22 or a resolver that detects the rotational position of the motor unit 22. The sensor unit 23 outputs the detection signal to the control device 12c of the inverter device 10 through the wiring unit 30.

  The motor housing 21 (corresponding to the “second housing” of the present invention) accommodates the motor unit 22 and the sensor unit 23 in a substantially sealed state. In addition, the motor housing | casing 21 exhibits the external shape of a rectangular parallelepiped shape by a some wall part, for example.

  An opening 21b that connects the storage space and the external space is formed in the lower side wall 21a of the motor housing 21. The motor housing 21 is disposed such that the opening 21 b of the lower side wall 21 a faces the opening 11 c of the upper side wall 11 a of the inverter housing 11. The other end of the wiring part 30 is drawn into the storage space of the motor housing 21 through the opening 21 b and connected to the sensor part 23.

  The motor housing 21 is supported so that the lower side wall portion 21a of the motor housing 21 is in contact with the upper end of the protruding wall portion 11ab of the inverter housing 11. Thereby, a space is formed between the motor housing 21 and the inverter housing 11, and heat transfer from the motor housing 21 to the inverter housing 11 is suppressed.

  The wiring unit 30 is a wiring that electrically connects an electrical component in one in-vehicle module and an electrical component in another in-vehicle module. The wiring unit 30 according to the present embodiment transmits a detection signal generated by the sensor unit 23 to the control device 12c. In other words, the wiring portion 30 has one end connected to the connector 12 b in the storage space of the inverter housing 11 and the other end connected to the sensor portion 23 in the storage space of the motor housing 21.

  As the connection method of the wiring part 30, for example, crimping is used at the one end side and the connector 12b. Further, for example, solder connection is used at the other end side and the sensor unit 23. In addition, although the connection method of the wiring part 30 is arbitrary, from a viewpoint of ensuring vibration tolerance, crimping | bonding with a connector, solder connection, or welding is desirable.

  The wiring length of the wiring part 30 has a surplus length so that one end is connected to the connector 12b in the storage space of the inverter housing 11 in the assembly process and is drawn out linearly. Specifically, the wiring length of the wiring part 30 is designed to be longer than the distance between the connection position to the connector 12b and the connection position to the sensor part 23 after assembly.

  As the wiring part 30, for example, a wire harness is used. Note that the wiring unit 30 may be a single wiring or a bundle of a plurality of wirings. Moreover, although the wiring part 30 is a signal line for transmitting a detection signal from the sensor part 23 in this embodiment, it may be constituted by a power line or a combination thereof.

  The shape of the wiring part 30 in the longitudinal direction is regulated by the guide part 31 as if it was memorized in a curved shape (see FIG. 2).

  The guide portion 31 is formed of a curved elastic member (for example, a rubber member such as an elastomer), surrounds the outer peripheral surface of the wiring portion 30 along the longitudinal direction, and the longitudinal direction of the wiring portion 30 along the shape. The shape of at least a part of is regulated to be curved. Here, the guide portion 31 surrounds a surplus length of the wiring length of the wiring portion 30 at a substantially central position of the wiring portion 30.

  When the wiring part 30 is pulled out (see FIG. 3), the guide part 31 applies a restoring force (elastic force) to the wiring part 30 so that the shape in the longitudinal direction of the wiring part 30 is deformed into a curved state. ). In other words, after the wiring portion 30 is pulled out, the guide portion 31 is arranged so that an excess of the wiring length of the wiring portion 30 is accommodated in the storage space of the inverter housing 11 (here, in the wiring storage portion 11b). The shape of the wiring part 30 is regulated.

  In addition, although the longitudinal direction area | region where the guide part 31 coat | covers the wiring part 30 is more preferably more than the excess of the wiring length of the wiring part 30, it may be less than the excess. Further, the circumferential region in which the guide portion 31 covers the wiring portion 30 is more preferably the entire circumference in the circumferential direction of the wiring portion 30, but may be a part in the circumferential direction.

  On one end side of the guide portion 31 (here, on the circuit board 12 side of the wiring portion 30), an engagement portion 31a that engages with a notch portion 11d formed in the inverter housing 11 is provided. The engaging part 31a functions so that the position on one end side of the guide part 31 is held at the position of the notch part 11d by being hooked and engaged with the notch part 11d when the wiring part 30 is pulled out. Thereby, the guide part 31 regulates the storage position of the excess wiring length of the wiring part 30 with higher accuracy.

  In the in-vehicle device 1 as described above, the assembling work may be performed either manually or by an automatic assembling machine.

  In the case of manual work, the worker first connects one end of the wiring part 30 to the connector 12b by crimping or the like. Then, with one end of the wiring part 30 connected to the connector 12b, the operator pulls out the other end side of the wiring part 30 from the storage space of the inverter housing 11 to the external space through the opening 11c.

  Next, the operator pulls the other end of the wiring part 30 into the housing space of the motor housing 21 through the opening 21b and connects it to the sensor part 23 by soldering or the like. Then, the worker finally fixes the inverter housing 11 and the motor housing 21 using fastening members such as bolts. Thereby, the assembly of the in-vehicle device 1 is completed.

  After the in-vehicle device 1 is assembled in this way, the wiring portion 30 returns to the curved shape again from the state of extending linearly in the longitudinal direction by the restoring force of the guide portion 31. As a result, the wiring part 30 is accommodated in the wiring accommodating part 11 b without being sandwiched between the inverter casing 11 and the motor casing 21.

  As described above, the in-vehicle device 1 according to the present embodiment includes the guide portion 31 that regulates the shape of the wiring portion 30 in the longitudinal direction in a curved shape. Therefore, according to the vehicle-mounted device 1 according to the present embodiment, the wiring portion 30 is pulled out, and the circuit board 12 (first electrical component in the first casing) in the inverter casing 11 and the motor casing 21 Even after the sensor unit 23 (second electrical component in the second housing) is connected, the wiring portion 30 is damaged due to the excess wiring length of the wiring portion 30 being sandwiched between the housings. Can be prevented. Thereby, more reliable wiring connection is possible between the circuit board 12 in the inverter housing 11 and the sensor unit 23 in the motor housing 21.

  In addition, the in-vehicle device 1 according to the present embodiment directly connects the circuit board 12 in the inverter housing 11 and the sensor unit 23 in the motor housing 21 using the wiring unit 30. Therefore, according to the vehicle-mounted apparatus 1 which concerns on this embodiment, compared with the aspect which connects connectors like the prior art of patent document 1, it has the tolerance with respect to a vibration, and has a stable electrical connection state. Can be maintained.

  Moreover, the vehicle equipment 1 which concerns on this embodiment has the structure where the guide part 31 surrounds the outer peripheral surface of the wiring part 30 along a longitudinal direction. Therefore, according to the in-vehicle device 1 according to the present embodiment, the mechanical strength of the wiring part 30 can be improved.

  In addition, the in-vehicle device 1 according to the present embodiment includes a notch portion 11d in which the inverter housing 11 is disposed at a position adjacent to the opening portion 11c, and an engaging portion in which the guide portion 31 engages with the notch portion 11d. 31a. Therefore, according to the in-vehicle device 1 according to the present embodiment, the surplus portion of the wiring length of the wiring portion 30 can be drawn into the inverter housing 11 even after the wiring portion 30 is pulled out. The storage position can be more accurately regulated.

  In the above-described embodiment, as an example of an object to be wire-connected between an electrical component in one housing and an electrical component in another housing, the circuit board 12 in the inverter housing 11 and the motor housing 21 The sensor unit 23 is shown. However, the above-described wiring connection structure can be applied when various objects are connected by wiring. The above-described wiring connection structure can also be applied to various combinations of on-vehicle modules. For example, you may apply when connecting the control apparatus in the housing | casing of a vehicle-mounted battery, and the control apparatus in the housing | casing of a charging device.

  As mentioned above, although the specific example of this invention was demonstrated in detail, these are only illustrations and do not limit a claim. The technology described in the claims includes various modifications and changes of the specific examples illustrated above.

  According to the vehicle-mounted device according to the present disclosure, more reliable wiring connection is possible between an electrical component in one housing and an electrical component in another housing.

DESCRIPTION OF SYMBOLS 1 In-vehicle apparatus 10 Inverter apparatus 11 Inverter housing 11a Upper side wall part 11ab Protruding wall part 11b Wiring accommodating part 11c Opening part 11d Notch part 12 Circuit board 12a Switching element 12b Connector 12c Control apparatus 20 Drive motor 21 Motor housing 21a Lower side wall part 21b Opening part 22 Motor part 23 Sensor part 30 Wiring part 31 Guide part 31a Engagement part

Claims (6)

A first housing that houses the first electrical component and has a first opening that communicates the housing space with the external space;
The second electrical component is housed and has a second opening that communicates the housing space with the external space, and the first opening in a state where the second opening faces the first opening. A second housing disposed adjacent to the housing of
One end is inserted into the storage space of the first housing through the first opening and connected to the first electrical component, and the other end is connected to the second opening through the second opening. A wiring portion that is inserted into a housing space of the housing and connected to the second electrical component;
A guide portion that is configured by a curved elastic member, surrounds the outer peripheral surface of the wiring portion along the longitudinal direction, and regulates at least a part of the shape of the wiring portion in the longitudinal direction to be curved;
In-vehicle equipment equipped with. The first housing has a notch at a position adjacent to the first opening,
The guide part has an engaging part that engages with the notch part,
The in-vehicle device according to claim 1. The first casing is adjacent to the first opening, and at a position facing the second casing, the first casing is separated from a storage space for storing the first electrical component. Having a wiring storage portion that forms a space for storing a surplus of the wiring length;
The in-vehicle device according to claim 1. The first housing has a protruding wall portion that rises in an outward direction so as to surround the wiring storage portion.
The in-vehicle device according to claim 3. The wiring part is a wire harness,
The in-vehicle device according to claim 1. Each of the first casing and the second casing is a casing of a drive motor or an inverter device.
The in-vehicle device according to claim 1.

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